Commit | Line | Data |
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252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
5bb7df2e | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
7686d77d | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 11 | (at your option) any later version. |
252b5132 | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf/m68k.h" | |
266abb8f | 29 | #include "opcode/m68k.h" |
252b5132 | 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 | { | |
b34976b6 AM |
36 | HOWTO(R_68K_NONE, 0, 0, 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 | ||
346 | static void | |
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 | { | |
353 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
354 | abfd, (int) indx); | |
355 | indx = R_68K_NONE; | |
356 | } | |
357 | cache_ptr->howto = &howto_table[indx]; | |
252b5132 RH |
358 | } |
359 | ||
360 | #define elf_info_to_howto rtype_to_howto | |
361 | ||
362 | static const struct | |
363 | { | |
364 | bfd_reloc_code_real_type bfd_val; | |
365 | int elf_val; | |
cf869cce NC |
366 | } |
367 | reloc_map[] = | |
368 | { | |
252b5132 RH |
369 | { BFD_RELOC_NONE, R_68K_NONE }, |
370 | { BFD_RELOC_32, R_68K_32 }, | |
371 | { BFD_RELOC_16, R_68K_16 }, | |
372 | { BFD_RELOC_8, R_68K_8 }, | |
373 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
374 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
375 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
376 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
377 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
378 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
379 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
380 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
381 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
382 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
383 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
384 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
385 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
386 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
387 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
388 | { BFD_RELOC_NONE, R_68K_COPY }, | |
389 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
390 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
391 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
392 | { BFD_RELOC_CTOR, R_68K_32 }, | |
393 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
394 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
cf869cce NC |
395 | { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 }, |
396 | { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 }, | |
397 | { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 }, | |
398 | { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 }, | |
399 | { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 }, | |
400 | { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 }, | |
401 | { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 }, | |
402 | { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 }, | |
403 | { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 }, | |
404 | { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 }, | |
405 | { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 }, | |
406 | { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 }, | |
407 | { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 }, | |
408 | { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 }, | |
409 | { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 }, | |
252b5132 RH |
410 | }; |
411 | ||
412 | static reloc_howto_type * | |
2c3fc389 NC |
413 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
414 | bfd_reloc_code_real_type code) | |
252b5132 RH |
415 | { |
416 | unsigned int i; | |
417 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
418 | { | |
419 | if (reloc_map[i].bfd_val == code) | |
420 | return &howto_table[reloc_map[i].elf_val]; | |
421 | } | |
422 | return 0; | |
423 | } | |
424 | ||
157090f7 AM |
425 | static reloc_howto_type * |
426 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
427 | { | |
428 | unsigned int i; | |
429 | ||
430 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
431 | if (howto_table[i].name != NULL | |
432 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
433 | return &howto_table[i]; | |
434 | ||
435 | return NULL; | |
436 | } | |
437 | ||
252b5132 | 438 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 439 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
252b5132 | 440 | #define ELF_ARCH bfd_arch_m68k |
ae95ffa6 | 441 | #define ELF_TARGET_ID M68K_ELF_DATA |
252b5132 RH |
442 | \f |
443 | /* Functions for the m68k ELF linker. */ | |
444 | ||
445 | /* The name of the dynamic interpreter. This is put in the .interp | |
446 | section. */ | |
447 | ||
448 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
449 | ||
cc3e26be RS |
450 | /* Describes one of the various PLT styles. */ |
451 | ||
452 | struct elf_m68k_plt_info | |
453 | { | |
454 | /* The size of each PLT entry. */ | |
455 | bfd_vma size; | |
456 | ||
457 | /* The template for the first PLT entry. */ | |
458 | const bfd_byte *plt0_entry; | |
459 | ||
460 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
461 | The comments by each member indicate the value that the relocation | |
462 | is against. */ | |
463 | struct { | |
464 | unsigned int got4; /* .got + 4 */ | |
465 | unsigned int got8; /* .got + 8 */ | |
466 | } plt0_relocs; | |
467 | ||
468 | /* The template for a symbol's PLT entry. */ | |
469 | const bfd_byte *symbol_entry; | |
470 | ||
471 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
472 | The comments by each member indicate the value that the relocation | |
473 | is against. */ | |
474 | struct { | |
475 | unsigned int got; /* the symbol's .got.plt entry */ | |
476 | unsigned int plt; /* .plt */ | |
477 | } symbol_relocs; | |
478 | ||
479 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
480 | The stub starts with "move.l #relocoffset,%d0". */ | |
481 | bfd_vma symbol_resolve_entry; | |
482 | }; | |
483 | ||
252b5132 RH |
484 | /* The size in bytes of an entry in the procedure linkage table. */ |
485 | ||
486 | #define PLT_ENTRY_SIZE 20 | |
487 | ||
488 | /* The first entry in a procedure linkage table looks like this. See | |
489 | the SVR4 ABI m68k supplement to see how this works. */ | |
490 | ||
491 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
492 | { | |
493 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 494 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 495 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 496 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
497 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
498 | }; | |
499 | ||
500 | /* Subsequent entries in a procedure linkage table look like this. */ | |
501 | ||
502 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
503 | { | |
504 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 505 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 506 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 507 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 508 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 509 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
510 | }; |
511 | ||
cc3e26be RS |
512 | static const struct elf_m68k_plt_info elf_m68k_plt_info = { |
513 | PLT_ENTRY_SIZE, | |
514 | elf_m68k_plt0_entry, { 4, 12 }, | |
515 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
516 | }; | |
238d258f | 517 | |
7fb9f789 | 518 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 519 | |
cc3e26be | 520 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 521 | { |
cc3e26be RS |
522 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
523 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
524 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ | |
525 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
526 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
527 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
528 | 0x4e, 0xd0, /* jmp (%a0) */ |
529 | 0x4e, 0x71 /* nop */ | |
530 | }; | |
531 | ||
532 | /* Subsequent entries in a procedure linkage table look like this. */ | |
533 | ||
cc3e26be | 534 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 535 | { |
cc3e26be RS |
536 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
537 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
538 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
539 | 0x4e, 0xd0, /* jmp (%a0) */ |
540 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
cc3e26be | 541 | 0, 0, 0, 0, /* + reloc index */ |
238d258f | 542 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 543 | 0, 0, 0, 0 /* + .plt - . */ |
238d258f NC |
544 | }; |
545 | ||
cc3e26be RS |
546 | static const struct elf_m68k_plt_info elf_isab_plt_info = { |
547 | ISAB_PLT_ENTRY_SIZE, | |
548 | elf_isab_plt0_entry, { 2, 12 }, | |
549 | elf_isab_plt_entry, { 2, 20 }, 12 | |
550 | }; | |
9e1281c7 | 551 | |
7fb9f789 | 552 | #define ISAC_PLT_ENTRY_SIZE 24 |
9a2e615a NS |
553 | |
554 | static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] = | |
555 | { | |
556 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
557 | 0, 0, 0, 0, /* replaced with .got + 4 - . */ | |
558 | 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */ | |
559 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
560 | 0, 0, 0, 0, /* replaced with .got + 8 - . */ | |
561 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
562 | 0x4e, 0xd0, /* jmp (%a0) */ | |
563 | 0x4e, 0x71 /* nop */ | |
564 | }; | |
565 | ||
566 | /* Subsequent entries in a procedure linkage table look like this. */ | |
567 | ||
568 | static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] = | |
569 | { | |
570 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
571 | 0, 0, 0, 0, /* replaced with (.got entry) - . */ | |
572 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
573 | 0x4e, 0xd0, /* jmp (%a0) */ | |
574 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
575 | 0, 0, 0, 0, /* replaced with offset into relocation table */ | |
576 | 0x61, 0xff, /* bsr.l .plt */ | |
577 | 0, 0, 0, 0 /* replaced with .plt - . */ | |
578 | }; | |
579 | ||
580 | static const struct elf_m68k_plt_info elf_isac_plt_info = { | |
581 | ISAC_PLT_ENTRY_SIZE, | |
582 | elf_isac_plt0_entry, { 2, 12}, | |
583 | elf_isac_plt_entry, { 2, 20 }, 12 | |
584 | }; | |
585 | ||
cc3e26be | 586 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 587 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 588 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 589 | { |
6091b433 | 590 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
cc3e26be | 591 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 592 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 593 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
6091b433 | 594 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
595 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
596 | 0, 0 | |
597 | }; | |
598 | ||
cc3e26be | 599 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 600 | { |
1ca42bad | 601 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 602 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
1ca42bad | 603 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 | 604 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 605 | 0, 0, 0, 0, /* + reloc index */ |
9e1281c7 | 606 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 607 | 0, 0, 0, 0, /* + .plt - . */ |
9e1281c7 CM |
608 | 0, 0 |
609 | }; | |
610 | ||
cc3e26be RS |
611 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = { |
612 | CPU32_PLT_ENTRY_SIZE, | |
613 | elf_cpu32_plt0_entry, { 4, 12 }, | |
614 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
615 | }; | |
616 | ||
252b5132 RH |
617 | /* The m68k linker needs to keep track of the number of relocs that it |
618 | decides to copy in check_relocs for each symbol. This is so that it | |
619 | can discard PC relative relocs if it doesn't need them when linking | |
620 | with -Bsymbolic. We store the information in a field extending the | |
621 | regular ELF linker hash table. */ | |
622 | ||
623 | /* This structure keeps track of the number of PC relative relocs we have | |
624 | copied for a given symbol. */ | |
625 | ||
626 | struct elf_m68k_pcrel_relocs_copied | |
627 | { | |
628 | /* Next section. */ | |
629 | struct elf_m68k_pcrel_relocs_copied *next; | |
630 | /* A section in dynobj. */ | |
631 | asection *section; | |
632 | /* Number of relocs copied in this section. */ | |
633 | bfd_size_type count; | |
634 | }; | |
635 | ||
7fb9f789 NC |
636 | /* Forward declaration. */ |
637 | struct elf_m68k_got_entry; | |
638 | ||
252b5132 RH |
639 | /* m68k ELF linker hash entry. */ |
640 | ||
641 | struct elf_m68k_link_hash_entry | |
642 | { | |
643 | struct elf_link_hash_entry root; | |
644 | ||
645 | /* Number of PC relative relocs copied for this symbol. */ | |
646 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
7fb9f789 NC |
647 | |
648 | /* Key to got_entries. */ | |
649 | unsigned long got_entry_key; | |
650 | ||
651 | /* List of GOT entries for this symbol. This list is build during | |
652 | offset finalization and is used within elf_m68k_finish_dynamic_symbol | |
653 | to traverse all GOT entries for a particular symbol. | |
654 | ||
655 | ??? We could've used root.got.glist field instead, but having | |
656 | a separate field is cleaner. */ | |
657 | struct elf_m68k_got_entry *glist; | |
252b5132 RH |
658 | }; |
659 | ||
0cca5f05 AS |
660 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
661 | ||
7fb9f789 NC |
662 | /* Key part of GOT entry in hashtable. */ |
663 | struct elf_m68k_got_entry_key | |
664 | { | |
665 | /* BFD in which this symbol was defined. NULL for global symbols. */ | |
666 | const bfd *bfd; | |
667 | ||
668 | /* Symbol index. Either local symbol index or h->got_entry_key. */ | |
669 | unsigned long symndx; | |
cf869cce NC |
670 | |
671 | /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32}, | |
672 | R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}. | |
673 | ||
674 | From perspective of hashtable key, only elf_m68k_got_reloc_type (type) | |
675 | matters. That is, we distinguish between, say, R_68K_GOT16O | |
676 | and R_68K_GOT32O when allocating offsets, but they are considered to be | |
677 | the same when searching got->entries. */ | |
678 | enum elf_m68k_reloc_type type; | |
7fb9f789 NC |
679 | }; |
680 | ||
cf869cce NC |
681 | /* Size of the GOT offset suitable for relocation. */ |
682 | enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST }; | |
683 | ||
7fb9f789 NC |
684 | /* Entry of the GOT. */ |
685 | struct elf_m68k_got_entry | |
686 | { | |
687 | /* GOT entries are put into a got->entries hashtable. This is the key. */ | |
688 | struct elf_m68k_got_entry_key key_; | |
689 | ||
690 | /* GOT entry data. We need s1 before offset finalization and s2 after. */ | |
691 | union | |
692 | { | |
693 | struct | |
694 | { | |
695 | /* Number of times this entry is referenced. It is used to | |
696 | filter out unnecessary GOT slots in elf_m68k_gc_sweep_hook. */ | |
697 | bfd_vma refcount; | |
7fb9f789 NC |
698 | } s1; |
699 | ||
700 | struct | |
701 | { | |
702 | /* Offset from the start of .got section. To calculate offset relative | |
703 | to GOT pointer one should substract got->offset from this value. */ | |
704 | bfd_vma offset; | |
705 | ||
706 | /* Pointer to the next GOT entry for this global symbol. | |
707 | Symbols have at most one entry in one GOT, but might | |
708 | have entries in more than one GOT. | |
709 | Root of this list is h->glist. | |
710 | NULL for local symbols. */ | |
711 | struct elf_m68k_got_entry *next; | |
712 | } s2; | |
713 | } u; | |
714 | }; | |
715 | ||
cf869cce NC |
716 | /* Return representative type for relocation R_TYPE. |
717 | This is used to avoid enumerating many relocations in comparisons, | |
718 | switches etc. */ | |
719 | ||
720 | static enum elf_m68k_reloc_type | |
721 | elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type) | |
722 | { | |
723 | switch (r_type) | |
724 | { | |
725 | /* In most cases R_68K_GOTx relocations require the very same | |
726 | handling as R_68K_GOT32O relocation. In cases when we need | |
727 | to distinguish between the two, we use explicitly compare against | |
728 | r_type. */ | |
729 | case R_68K_GOT32: | |
730 | case R_68K_GOT16: | |
731 | case R_68K_GOT8: | |
732 | case R_68K_GOT32O: | |
733 | case R_68K_GOT16O: | |
734 | case R_68K_GOT8O: | |
735 | return R_68K_GOT32O; | |
736 | ||
737 | case R_68K_TLS_GD32: | |
738 | case R_68K_TLS_GD16: | |
739 | case R_68K_TLS_GD8: | |
740 | return R_68K_TLS_GD32; | |
741 | ||
742 | case R_68K_TLS_LDM32: | |
743 | case R_68K_TLS_LDM16: | |
744 | case R_68K_TLS_LDM8: | |
745 | return R_68K_TLS_LDM32; | |
746 | ||
747 | case R_68K_TLS_IE32: | |
748 | case R_68K_TLS_IE16: | |
749 | case R_68K_TLS_IE8: | |
750 | return R_68K_TLS_IE32; | |
751 | ||
752 | default: | |
753 | BFD_ASSERT (FALSE); | |
754 | return 0; | |
755 | } | |
756 | } | |
757 | ||
758 | /* Return size of the GOT entry offset for relocation R_TYPE. */ | |
759 | ||
760 | static enum elf_m68k_got_offset_size | |
761 | elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type) | |
762 | { | |
763 | switch (r_type) | |
764 | { | |
765 | case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8: | |
766 | case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32: | |
767 | case R_68K_TLS_IE32: | |
768 | return R_32; | |
769 | ||
770 | case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16: | |
771 | case R_68K_TLS_IE16: | |
772 | return R_16; | |
773 | ||
774 | case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8: | |
775 | case R_68K_TLS_IE8: | |
776 | return R_8; | |
777 | ||
778 | default: | |
779 | BFD_ASSERT (FALSE); | |
780 | return 0; | |
781 | } | |
782 | } | |
783 | ||
784 | /* Return number of GOT entries we need to allocate in GOT for | |
785 | relocation R_TYPE. */ | |
786 | ||
787 | static bfd_vma | |
788 | elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type) | |
789 | { | |
790 | switch (elf_m68k_reloc_got_type (r_type)) | |
791 | { | |
792 | case R_68K_GOT32O: | |
793 | case R_68K_TLS_IE32: | |
794 | return 1; | |
795 | ||
796 | case R_68K_TLS_GD32: | |
797 | case R_68K_TLS_LDM32: | |
798 | return 2; | |
799 | ||
800 | default: | |
801 | BFD_ASSERT (FALSE); | |
802 | return 0; | |
803 | } | |
804 | } | |
805 | ||
806 | /* Return TRUE if relocation R_TYPE is a TLS one. */ | |
807 | ||
808 | static bfd_boolean | |
809 | elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type) | |
810 | { | |
811 | switch (r_type) | |
812 | { | |
813 | case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8: | |
814 | case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8: | |
815 | case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8: | |
816 | case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8: | |
817 | case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8: | |
818 | case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32: | |
819 | return TRUE; | |
820 | ||
821 | default: | |
822 | return FALSE; | |
823 | } | |
824 | } | |
825 | ||
7fb9f789 NC |
826 | /* Data structure representing a single GOT. */ |
827 | struct elf_m68k_got | |
828 | { | |
829 | /* Hashtable of 'struct elf_m68k_got_entry's. | |
830 | Starting size of this table is the maximum number of | |
831 | R_68K_GOT8O entries. */ | |
832 | htab_t entries; | |
833 | ||
cf869cce NC |
834 | /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require |
835 | several GOT slots. | |
7fb9f789 | 836 | |
cf869cce NC |
837 | n_slots[R_8] is the count of R_8 slots in this GOT. |
838 | n_slots[R_16] is the cumulative count of R_8 and R_16 slots | |
839 | in this GOT. | |
840 | n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots | |
841 | in this GOT. This is the total number of slots. */ | |
842 | bfd_vma n_slots[R_LAST]; | |
7fb9f789 | 843 | |
cf869cce | 844 | /* Number of local (entry->key_.h == NULL) slots in this GOT. |
7fb9f789 NC |
845 | This is only used to properly calculate size of .rela.got section; |
846 | see elf_m68k_partition_multi_got. */ | |
cf869cce | 847 | bfd_vma local_n_slots; |
7fb9f789 NC |
848 | |
849 | /* Offset of this GOT relative to beginning of .got section. */ | |
850 | bfd_vma offset; | |
851 | }; | |
852 | ||
853 | /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */ | |
854 | struct elf_m68k_bfd2got_entry | |
855 | { | |
856 | /* BFD. */ | |
857 | const bfd *bfd; | |
858 | ||
859 | /* Assigned GOT. Before partitioning multi-GOT each BFD has its own | |
860 | GOT structure. After partitioning several BFD's might [and often do] | |
861 | share a single GOT. */ | |
862 | struct elf_m68k_got *got; | |
863 | }; | |
864 | ||
865 | /* The main data structure holding all the pieces. */ | |
866 | struct elf_m68k_multi_got | |
867 | { | |
868 | /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry | |
869 | here, then it doesn't need a GOT (this includes the case of a BFD | |
870 | having an empty GOT). | |
871 | ||
872 | ??? This hashtable can be replaced by an array indexed by bfd->id. */ | |
873 | htab_t bfd2got; | |
874 | ||
875 | /* Next symndx to assign a global symbol. | |
876 | h->got_entry_key is initialized from this counter. */ | |
877 | unsigned long global_symndx; | |
878 | }; | |
879 | ||
252b5132 RH |
880 | /* m68k ELF linker hash table. */ |
881 | ||
882 | struct elf_m68k_link_hash_table | |
883 | { | |
884 | struct elf_link_hash_table root; | |
b6152c34 | 885 | |
87d72d41 AM |
886 | /* Small local sym cache. */ |
887 | struct sym_cache sym_cache; | |
cc3e26be RS |
888 | |
889 | /* The PLT format used by this link, or NULL if the format has not | |
890 | yet been chosen. */ | |
891 | const struct elf_m68k_plt_info *plt_info; | |
7fb9f789 NC |
892 | |
893 | /* True, if GP is loaded within each function which uses it. | |
894 | Set to TRUE when GOT negative offsets or multi-GOT is enabled. */ | |
895 | bfd_boolean local_gp_p; | |
896 | ||
897 | /* Switch controlling use of negative offsets to double the size of GOTs. */ | |
898 | bfd_boolean use_neg_got_offsets_p; | |
899 | ||
900 | /* Switch controlling generation of multiple GOTs. */ | |
901 | bfd_boolean allow_multigot_p; | |
902 | ||
903 | /* Multi-GOT data structure. */ | |
904 | struct elf_m68k_multi_got multi_got_; | |
252b5132 RH |
905 | }; |
906 | ||
252b5132 RH |
907 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
908 | ||
909 | #define elf_m68k_hash_table(p) \ | |
4dfe6ac6 NC |
910 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
911 | == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 912 | |
7fb9f789 NC |
913 | /* Shortcut to multi-GOT data. */ |
914 | #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_) | |
915 | ||
252b5132 RH |
916 | /* Create an entry in an m68k ELF linker hash table. */ |
917 | ||
918 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
919 | elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry, |
920 | struct bfd_hash_table *table, | |
921 | const char *string) | |
252b5132 | 922 | { |
0cca5f05 | 923 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
924 | |
925 | /* Allocate the structure if it has not already been allocated by a | |
926 | subclass. */ | |
0cca5f05 AS |
927 | if (ret == NULL) |
928 | ret = bfd_hash_allocate (table, | |
929 | sizeof (struct elf_m68k_link_hash_entry)); | |
930 | if (ret == NULL) | |
931 | return ret; | |
252b5132 RH |
932 | |
933 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
934 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
935 | if (ret != NULL) | |
7fb9f789 NC |
936 | { |
937 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
938 | elf_m68k_hash_entry (ret)->got_entry_key = 0; | |
939 | elf_m68k_hash_entry (ret)->glist = NULL; | |
940 | } | |
252b5132 | 941 | |
0cca5f05 | 942 | return ret; |
252b5132 RH |
943 | } |
944 | ||
945 | /* Create an m68k ELF linker hash table. */ | |
946 | ||
947 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 948 | elf_m68k_link_hash_table_create (bfd *abfd) |
252b5132 RH |
949 | { |
950 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 951 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 952 | |
7bf52ea2 | 953 | ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
954 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
955 | return NULL; | |
956 | ||
66eb6687 AM |
957 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
958 | elf_m68k_link_hash_newfunc, | |
4dfe6ac6 NC |
959 | sizeof (struct elf_m68k_link_hash_entry), |
960 | M68K_ELF_DATA)) | |
252b5132 | 961 | { |
e2d34d7d | 962 | free (ret); |
252b5132 RH |
963 | return NULL; |
964 | } | |
965 | ||
7fb9f789 | 966 | ret->multi_got_.global_symndx = 1; |
b6152c34 | 967 | |
252b5132 RH |
968 | return &ret->root.root; |
969 | } | |
970 | ||
7fb9f789 NC |
971 | /* Destruct local data. */ |
972 | ||
973 | static void | |
974 | elf_m68k_link_hash_table_free (struct bfd_link_hash_table *_htab) | |
975 | { | |
976 | struct elf_m68k_link_hash_table *htab; | |
977 | ||
978 | htab = (struct elf_m68k_link_hash_table *) _htab; | |
979 | ||
980 | if (htab->multi_got_.bfd2got != NULL) | |
981 | { | |
982 | htab_delete (htab->multi_got_.bfd2got); | |
983 | htab->multi_got_.bfd2got = NULL; | |
984 | } | |
9f7c3e5e | 985 | _bfd_elf_link_hash_table_free (_htab); |
7fb9f789 NC |
986 | } |
987 | ||
266abb8f NS |
988 | /* Set the right machine number. */ |
989 | ||
990 | static bfd_boolean | |
991 | elf32_m68k_object_p (bfd *abfd) | |
992 | { | |
993 | unsigned int mach = 0; | |
994 | unsigned features = 0; | |
995 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
996 | ||
425c6cb0 | 997 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 998 | features |= m68000; |
425c6cb0 | 999 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
1000 | features |= cpu32; |
1001 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1002 | features |= fido_a; | |
425c6cb0 | 1003 | else |
266abb8f | 1004 | { |
c694fd50 | 1005 | switch (eflags & EF_M68K_CF_ISA_MASK) |
266abb8f | 1006 | { |
c694fd50 | 1007 | case EF_M68K_CF_ISA_A_NODIV: |
266abb8f NS |
1008 | features |= mcfisa_a; |
1009 | break; | |
c694fd50 | 1010 | case EF_M68K_CF_ISA_A: |
0b2e31dc NS |
1011 | features |= mcfisa_a|mcfhwdiv; |
1012 | break; | |
c694fd50 | 1013 | case EF_M68K_CF_ISA_A_PLUS: |
0b2e31dc NS |
1014 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; |
1015 | break; | |
c694fd50 | 1016 | case EF_M68K_CF_ISA_B_NOUSP: |
0b2e31dc NS |
1017 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; |
1018 | break; | |
c694fd50 | 1019 | case EF_M68K_CF_ISA_B: |
0b2e31dc NS |
1020 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; |
1021 | break; | |
9a2e615a NS |
1022 | case EF_M68K_CF_ISA_C: |
1023 | features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp; | |
1024 | break; | |
8d100c32 KH |
1025 | case EF_M68K_CF_ISA_C_NODIV: |
1026 | features |= mcfisa_a|mcfisa_c|mcfusp; | |
1027 | break; | |
266abb8f | 1028 | } |
c694fd50 | 1029 | switch (eflags & EF_M68K_CF_MAC_MASK) |
266abb8f | 1030 | { |
c694fd50 | 1031 | case EF_M68K_CF_MAC: |
266abb8f NS |
1032 | features |= mcfmac; |
1033 | break; | |
c694fd50 | 1034 | case EF_M68K_CF_EMAC: |
266abb8f NS |
1035 | features |= mcfemac; |
1036 | break; | |
1037 | } | |
c694fd50 | 1038 | if (eflags & EF_M68K_CF_FLOAT) |
266abb8f NS |
1039 | features |= cfloat; |
1040 | } | |
1041 | ||
1042 | mach = bfd_m68k_features_to_mach (features); | |
1043 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
1044 | ||
1045 | return TRUE; | |
1046 | } | |
1047 | ||
fc9f1df9 NC |
1048 | /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag |
1049 | field based on the machine number. */ | |
1050 | ||
1051 | static void | |
1052 | elf_m68k_final_write_processing (bfd *abfd, | |
1053 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1054 | { | |
1055 | int mach = bfd_get_mach (abfd); | |
1056 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; | |
1057 | ||
1058 | if (!e_flags) | |
1059 | { | |
1060 | unsigned int arch_mask; | |
1061 | ||
1062 | arch_mask = bfd_m68k_mach_to_features (mach); | |
1063 | ||
1064 | if (arch_mask & m68000) | |
1065 | e_flags = EF_M68K_M68000; | |
1066 | else if (arch_mask & cpu32) | |
1067 | e_flags = EF_M68K_CPU32; | |
1068 | else if (arch_mask & fido_a) | |
1069 | e_flags = EF_M68K_FIDO; | |
1070 | else | |
1071 | { | |
1072 | switch (arch_mask | |
1073 | & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp)) | |
1074 | { | |
1075 | case mcfisa_a: | |
1076 | e_flags |= EF_M68K_CF_ISA_A_NODIV; | |
1077 | break; | |
1078 | case mcfisa_a | mcfhwdiv: | |
1079 | e_flags |= EF_M68K_CF_ISA_A; | |
1080 | break; | |
1081 | case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp: | |
1082 | e_flags |= EF_M68K_CF_ISA_A_PLUS; | |
1083 | break; | |
1084 | case mcfisa_a | mcfisa_b | mcfhwdiv: | |
1085 | e_flags |= EF_M68K_CF_ISA_B_NOUSP; | |
1086 | break; | |
1087 | case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp: | |
1088 | e_flags |= EF_M68K_CF_ISA_B; | |
1089 | break; | |
1090 | case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp: | |
1091 | e_flags |= EF_M68K_CF_ISA_C; | |
1092 | break; | |
1093 | case mcfisa_a | mcfisa_c | mcfusp: | |
1094 | e_flags |= EF_M68K_CF_ISA_C_NODIV; | |
1095 | break; | |
1096 | } | |
1097 | if (arch_mask & mcfmac) | |
1098 | e_flags |= EF_M68K_CF_MAC; | |
1099 | else if (arch_mask & mcfemac) | |
1100 | e_flags |= EF_M68K_CF_EMAC; | |
1101 | if (arch_mask & cfloat) | |
1102 | e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E; | |
1103 | } | |
1104 | elf_elfheader (abfd)->e_flags = e_flags; | |
1105 | } | |
1106 | } | |
1107 | ||
ae9a127f | 1108 | /* Keep m68k-specific flags in the ELF header. */ |
fc9f1df9 | 1109 | |
b34976b6 | 1110 | static bfd_boolean |
2c3fc389 | 1111 | elf32_m68k_set_private_flags (bfd *abfd, flagword flags) |
9e1281c7 CM |
1112 | { |
1113 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1114 | elf_flags_init (abfd) = TRUE; |
1115 | return TRUE; | |
9e1281c7 CM |
1116 | } |
1117 | ||
9e1281c7 CM |
1118 | /* Merge backend specific data from an object file to the output |
1119 | object file when linking. */ | |
b34976b6 | 1120 | static bfd_boolean |
2c3fc389 | 1121 | elf32_m68k_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
9e1281c7 CM |
1122 | { |
1123 | flagword out_flags; | |
1124 | flagword in_flags; | |
a9d34880 RS |
1125 | flagword out_isa; |
1126 | flagword in_isa; | |
1127 | const bfd_arch_info_type *arch_info; | |
7fb9f789 | 1128 | |
9e1281c7 CM |
1129 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1130 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
1131 | return FALSE; |
1132 | ||
a9d34880 RS |
1133 | /* Get the merged machine. This checks for incompatibility between |
1134 | Coldfire & non-Coldfire flags, incompability between different | |
1135 | Coldfire ISAs, and incompability between different MAC types. */ | |
1136 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
1137 | if (!arch_info) | |
1138 | return FALSE; | |
9e1281c7 | 1139 | |
7fb9f789 NC |
1140 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
1141 | ||
1142 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1143 | if (!elf_flags_init (obfd)) | |
1144 | { | |
1145 | elf_flags_init (obfd) = TRUE; | |
1146 | out_flags = in_flags; | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | out_flags = elf_elfheader (obfd)->e_flags; | |
1151 | unsigned int variant_mask; | |
1152 | ||
1153 | if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1154 | variant_mask = 0; | |
1155 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1156 | variant_mask = 0; | |
1157 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1158 | variant_mask = 0; | |
1159 | else | |
1160 | variant_mask = EF_M68K_CF_ISA_MASK; | |
1161 | ||
1162 | in_isa = (in_flags & variant_mask); | |
1163 | out_isa = (out_flags & variant_mask); | |
1164 | if (in_isa > out_isa) | |
1165 | out_flags ^= in_isa ^ out_isa; | |
1166 | if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32 | |
1167 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1168 | || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO | |
1169 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)) | |
1170 | out_flags = EF_M68K_FIDO; | |
1171 | else | |
1172 | out_flags |= in_flags ^ in_isa; | |
1173 | } | |
1174 | elf_elfheader (obfd)->e_flags = out_flags; | |
1175 | ||
1176 | return TRUE; | |
1177 | } | |
1178 | ||
1179 | /* Display the flags field. */ | |
1180 | ||
1181 | static bfd_boolean | |
1182 | elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr) | |
1183 | { | |
1184 | FILE *file = (FILE *) ptr; | |
1185 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1186 | ||
1187 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1188 | ||
1189 | /* Print normal ELF private data. */ | |
1190 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1191 | ||
1192 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
1193 | ||
1194 | /* xgettext:c-format */ | |
1195 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1196 | ||
1197 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1198 | fprintf (file, " [m68000]"); | |
1199 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1200 | fprintf (file, " [cpu32]"); | |
1201 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1202 | fprintf (file, " [fido]"); | |
1203 | else | |
1204 | { | |
1205 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E) | |
1206 | fprintf (file, " [cfv4e]"); | |
1207 | ||
1208 | if (eflags & EF_M68K_CF_ISA_MASK) | |
1209 | { | |
1210 | char const *isa = _("unknown"); | |
1211 | char const *mac = _("unknown"); | |
1212 | char const *additional = ""; | |
1213 | ||
1214 | switch (eflags & EF_M68K_CF_ISA_MASK) | |
1215 | { | |
1216 | case EF_M68K_CF_ISA_A_NODIV: | |
1217 | isa = "A"; | |
1218 | additional = " [nodiv]"; | |
1219 | break; | |
1220 | case EF_M68K_CF_ISA_A: | |
1221 | isa = "A"; | |
1222 | break; | |
1223 | case EF_M68K_CF_ISA_A_PLUS: | |
1224 | isa = "A+"; | |
1225 | break; | |
1226 | case EF_M68K_CF_ISA_B_NOUSP: | |
1227 | isa = "B"; | |
1228 | additional = " [nousp]"; | |
1229 | break; | |
1230 | case EF_M68K_CF_ISA_B: | |
1231 | isa = "B"; | |
1232 | break; | |
1233 | case EF_M68K_CF_ISA_C: | |
1234 | isa = "C"; | |
1235 | break; | |
1236 | case EF_M68K_CF_ISA_C_NODIV: | |
1237 | isa = "C"; | |
1238 | additional = " [nodiv]"; | |
1239 | break; | |
1240 | } | |
1241 | fprintf (file, " [isa %s]%s", isa, additional); | |
1242 | ||
1243 | if (eflags & EF_M68K_CF_FLOAT) | |
1244 | fprintf (file, " [float]"); | |
1245 | ||
1246 | switch (eflags & EF_M68K_CF_MAC_MASK) | |
1247 | { | |
1248 | case 0: | |
1249 | mac = NULL; | |
1250 | break; | |
1251 | case EF_M68K_CF_MAC: | |
1252 | mac = "mac"; | |
1253 | break; | |
1254 | case EF_M68K_CF_EMAC: | |
1255 | mac = "emac"; | |
1256 | break; | |
f608cd77 NS |
1257 | case EF_M68K_CF_EMAC_B: |
1258 | mac = "emac_b"; | |
1259 | break; | |
7fb9f789 NC |
1260 | } |
1261 | if (mac) | |
1262 | fprintf (file, " [%s]", mac); | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | fputc ('\n', file); | |
1267 | ||
1268 | return TRUE; | |
1269 | } | |
1270 | ||
1271 | /* Multi-GOT support implementation design: | |
1272 | ||
1273 | Multi-GOT starts in check_relocs hook. There we scan all | |
1274 | relocations of a BFD and build a local GOT (struct elf_m68k_got) | |
1275 | for it. If a single BFD appears to require too many GOT slots with | |
1276 | R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification | |
1277 | to user. | |
1278 | After check_relocs has been invoked for each input BFD, we have | |
1279 | constructed a GOT for each input BFD. | |
1280 | ||
1281 | To minimize total number of GOTs required for a particular output BFD | |
1282 | (as some environments support only 1 GOT per output object) we try | |
1283 | to merge some of the GOTs to share an offset space. Ideally [and in most | |
1284 | cases] we end up with a single GOT. In cases when there are too many | |
1285 | restricted relocations (e.g., R_68K_GOT16O relocations) we end up with | |
1286 | several GOTs, assuming the environment can handle them. | |
1287 | ||
1288 | Partitioning is done in elf_m68k_partition_multi_got. We start with | |
1289 | an empty GOT and traverse bfd2got hashtable putting got_entries from | |
1290 | local GOTs to the new 'big' one. We do that by constructing an | |
1291 | intermediate GOT holding all the entries the local GOT has and the big | |
1292 | GOT lacks. Then we check if there is room in the big GOT to accomodate | |
1293 | all the entries from diff. On success we add those entries to the big | |
1294 | GOT; on failure we start the new 'big' GOT and retry the adding of | |
1295 | entries from the local GOT. Note that this retry will always succeed as | |
1296 | each local GOT doesn't overflow the limits. After partitioning we | |
1297 | end up with each bfd assigned one of the big GOTs. GOT entries in the | |
1298 | big GOTs are initialized with GOT offsets. Note that big GOTs are | |
1299 | positioned consequently in program space and represent a single huge GOT | |
1300 | to the outside world. | |
1301 | ||
1302 | After that we get to elf_m68k_relocate_section. There we | |
1303 | adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol | |
1304 | relocations to refer to appropriate [assigned to current input_bfd] | |
1305 | big GOT. | |
1306 | ||
1307 | Notes: | |
1308 | ||
cf869cce NC |
1309 | GOT entry type: We have several types of GOT entries. |
1310 | * R_8 type is used in entries for symbols that have at least one | |
1311 | R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40 | |
7fb9f789 | 1312 | such entries in one GOT. |
cf869cce NC |
1313 | * R_16 type is used in entries for symbols that have at least one |
1314 | R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations. | |
7fb9f789 | 1315 | We can have at most 0x4000 such entries in one GOT. |
cf869cce NC |
1316 | * R_32 type is used in all other cases. We can have as many |
1317 | such entries in one GOT as we'd like. | |
7fb9f789 NC |
1318 | When counting relocations we have to include the count of the smaller |
1319 | ranged relocations in the counts of the larger ranged ones in order | |
1320 | to correctly detect overflow. | |
1321 | ||
1322 | Sorting the GOT: In each GOT starting offsets are assigned to | |
cf869cce NC |
1323 | R_8 entries, which are followed by R_16 entries, and |
1324 | R_32 entries go at the end. See finalize_got_offsets for details. | |
7fb9f789 NC |
1325 | |
1326 | Negative GOT offsets: To double usable offset range of GOTs we use | |
1327 | negative offsets. As we assign entries with GOT offsets relative to | |
1328 | start of .got section, the offset values are positive. They become | |
1329 | negative only in relocate_section where got->offset value is | |
1330 | subtracted from them. | |
1331 | ||
1332 | 3 special GOT entries: There are 3 special GOT entries used internally | |
1333 | by loader. These entries happen to be placed to .got.plt section, | |
1334 | so we don't do anything about them in multi-GOT support. | |
1335 | ||
1336 | Memory management: All data except for hashtables | |
1337 | multi_got->bfd2got and got->entries are allocated on | |
1338 | elf_hash_table (info)->dynobj bfd (for this reason we pass 'info' | |
1339 | to most functions), so we don't need to care to free them. At the | |
1340 | moment of allocation hashtables are being linked into main data | |
1341 | structure (multi_got), all pieces of which are reachable from | |
1342 | elf_m68k_multi_got (info). We deallocate them in | |
1343 | elf_m68k_link_hash_table_free. */ | |
1344 | ||
1345 | /* Initialize GOT. */ | |
1346 | ||
1347 | static void | |
cf869cce NC |
1348 | elf_m68k_init_got (struct elf_m68k_got *got) |
1349 | { | |
1350 | got->entries = NULL; | |
1351 | got->n_slots[R_8] = 0; | |
1352 | got->n_slots[R_16] = 0; | |
1353 | got->n_slots[R_32] = 0; | |
1354 | got->local_n_slots = 0; | |
1355 | got->offset = (bfd_vma) -1; | |
7fb9f789 NC |
1356 | } |
1357 | ||
1358 | /* Destruct GOT. */ | |
1359 | ||
1360 | static void | |
1361 | elf_m68k_clear_got (struct elf_m68k_got *got) | |
1362 | { | |
1363 | if (got->entries != NULL) | |
1364 | { | |
1365 | htab_delete (got->entries); | |
1366 | got->entries = NULL; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | /* Create and empty GOT structure. INFO is the context where memory | |
1371 | should be allocated. */ | |
1372 | ||
1373 | static struct elf_m68k_got * | |
1374 | elf_m68k_create_empty_got (struct bfd_link_info *info) | |
1375 | { | |
1376 | struct elf_m68k_got *got; | |
1377 | ||
1378 | got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got)); | |
1379 | if (got == NULL) | |
1380 | return NULL; | |
1381 | ||
cf869cce | 1382 | elf_m68k_init_got (got); |
7fb9f789 NC |
1383 | |
1384 | return got; | |
1385 | } | |
1386 | ||
1387 | /* Initialize KEY. */ | |
1388 | ||
1389 | static void | |
1390 | elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key, | |
1391 | struct elf_link_hash_entry *h, | |
cf869cce NC |
1392 | const bfd *abfd, unsigned long symndx, |
1393 | enum elf_m68k_reloc_type reloc_type) | |
7fb9f789 | 1394 | { |
cf869cce NC |
1395 | if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32) |
1396 | /* All TLS_LDM relocations share a single GOT entry. */ | |
1397 | { | |
1398 | key->bfd = NULL; | |
1399 | key->symndx = 0; | |
1400 | } | |
1401 | else if (h != NULL) | |
1402 | /* Global symbols are identified with their got_entry_key. */ | |
7fb9f789 NC |
1403 | { |
1404 | key->bfd = NULL; | |
1405 | key->symndx = elf_m68k_hash_entry (h)->got_entry_key; | |
1406 | BFD_ASSERT (key->symndx != 0); | |
1407 | } | |
1408 | else | |
cf869cce | 1409 | /* Local symbols are identified by BFD they appear in and symndx. */ |
7fb9f789 NC |
1410 | { |
1411 | key->bfd = abfd; | |
1412 | key->symndx = symndx; | |
1413 | } | |
cf869cce NC |
1414 | |
1415 | key->type = reloc_type; | |
7fb9f789 NC |
1416 | } |
1417 | ||
1418 | /* Calculate hash of got_entry. | |
1419 | ??? Is it good? */ | |
1420 | ||
1421 | static hashval_t | |
1422 | elf_m68k_got_entry_hash (const void *_entry) | |
1423 | { | |
1424 | const struct elf_m68k_got_entry_key *key; | |
1425 | ||
1426 | key = &((const struct elf_m68k_got_entry *) _entry)->key_; | |
1427 | ||
cf869cce NC |
1428 | return (key->symndx |
1429 | + (key->bfd != NULL ? (int) key->bfd->id : -1) | |
1430 | + elf_m68k_reloc_got_type (key->type)); | |
7fb9f789 NC |
1431 | } |
1432 | ||
1433 | /* Check if two got entries are equal. */ | |
1434 | ||
1435 | static int | |
1436 | elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2) | |
1437 | { | |
1438 | const struct elf_m68k_got_entry_key *key1; | |
1439 | const struct elf_m68k_got_entry_key *key2; | |
1440 | ||
1441 | key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_; | |
1442 | key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_; | |
1443 | ||
1444 | return (key1->bfd == key2->bfd | |
cf869cce NC |
1445 | && key1->symndx == key2->symndx |
1446 | && (elf_m68k_reloc_got_type (key1->type) | |
1447 | == elf_m68k_reloc_got_type (key2->type))); | |
7fb9f789 NC |
1448 | } |
1449 | ||
cf869cce NC |
1450 | /* When using negative offsets, we allocate one extra R_8, one extra R_16 |
1451 | and one extra R_32 slots to simplify handling of 2-slot entries during | |
1452 | offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */ | |
1453 | ||
1454 | /* Maximal number of R_8 slots in a single GOT. */ | |
1455 | #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1456 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1457 | ? (0x40 - 1) \ |
7fb9f789 NC |
1458 | : 0x20) |
1459 | ||
cf869cce NC |
1460 | /* Maximal number of R_8 and R_16 slots in a single GOT. */ |
1461 | #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1462 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1463 | ? (0x4000 - 2) \ |
7fb9f789 NC |
1464 | : 0x2000) |
1465 | ||
1466 | /* SEARCH - simply search the hashtable, don't insert new entries or fail when | |
1467 | the entry cannot be found. | |
1468 | FIND_OR_CREATE - search for an existing entry, but create new if there's | |
1469 | no such. | |
1470 | MUST_FIND - search for an existing entry and assert that it exist. | |
1471 | MUST_CREATE - assert that there's no such entry and create new one. */ | |
1472 | enum elf_m68k_get_entry_howto | |
1473 | { | |
1474 | SEARCH, | |
1475 | FIND_OR_CREATE, | |
1476 | MUST_FIND, | |
1477 | MUST_CREATE | |
1478 | }; | |
1479 | ||
1480 | /* Get or create (depending on HOWTO) entry with KEY in GOT. | |
1481 | INFO is context in which memory should be allocated (can be NULL if | |
1482 | HOWTO is SEARCH or MUST_FIND). */ | |
1483 | ||
1484 | static struct elf_m68k_got_entry * | |
1485 | elf_m68k_get_got_entry (struct elf_m68k_got *got, | |
1486 | const struct elf_m68k_got_entry_key *key, | |
1487 | enum elf_m68k_get_entry_howto howto, | |
1488 | struct bfd_link_info *info) | |
1489 | { | |
1490 | struct elf_m68k_got_entry entry_; | |
1491 | struct elf_m68k_got_entry *entry; | |
1492 | void **ptr; | |
1493 | ||
1494 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1495 | ||
1496 | if (got->entries == NULL) | |
1497 | /* This is the first entry in ABFD. Initialize hashtable. */ | |
1498 | { | |
1499 | if (howto == SEARCH) | |
1500 | return NULL; | |
1501 | ||
cf869cce | 1502 | got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT |
7fb9f789 NC |
1503 | (info), |
1504 | elf_m68k_got_entry_hash, | |
1505 | elf_m68k_got_entry_eq, NULL); | |
1506 | if (got->entries == NULL) | |
1507 | { | |
1508 | bfd_set_error (bfd_error_no_memory); | |
1509 | return NULL; | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | entry_.key_ = *key; | |
1514 | ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH | |
1515 | ? INSERT : NO_INSERT)); | |
1516 | if (ptr == NULL) | |
1517 | { | |
1518 | if (howto == SEARCH) | |
1519 | /* Entry not found. */ | |
1520 | return NULL; | |
1521 | ||
1522 | /* We're out of memory. */ | |
1523 | bfd_set_error (bfd_error_no_memory); | |
1524 | return NULL; | |
1525 | } | |
1526 | ||
1527 | if (*ptr == NULL) | |
1528 | /* We didn't find the entry and we're asked to create a new one. */ | |
1529 | { | |
1530 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1531 | ||
1532 | entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)); | |
1533 | if (entry == NULL) | |
1534 | return NULL; | |
1535 | ||
1536 | /* Initialize new entry. */ | |
1537 | entry->key_ = *key; | |
1538 | ||
1539 | entry->u.s1.refcount = 0; | |
cf869cce NC |
1540 | |
1541 | /* Mark the entry as not initialized. */ | |
1542 | entry->key_.type = R_68K_max; | |
7fb9f789 NC |
1543 | |
1544 | *ptr = entry; | |
1545 | } | |
1546 | else | |
1547 | /* We found the entry. */ | |
1548 | { | |
1549 | BFD_ASSERT (howto != MUST_CREATE); | |
1550 | ||
1551 | entry = *ptr; | |
1552 | } | |
1553 | ||
1554 | return entry; | |
1555 | } | |
1556 | ||
1557 | /* Update GOT counters when merging entry of WAS type with entry of NEW type. | |
1558 | Return the value to which ENTRY's type should be set. */ | |
1559 | ||
cf869cce NC |
1560 | static enum elf_m68k_reloc_type |
1561 | elf_m68k_update_got_entry_type (struct elf_m68k_got *got, | |
1562 | enum elf_m68k_reloc_type was, | |
d3ce72d0 | 1563 | enum elf_m68k_reloc_type new_reloc) |
7fb9f789 | 1564 | { |
cf869cce NC |
1565 | enum elf_m68k_got_offset_size was_size; |
1566 | enum elf_m68k_got_offset_size new_size; | |
1567 | bfd_vma n_slots; | |
1568 | ||
1569 | if (was == R_68K_max) | |
1570 | /* The type of the entry is not initialized yet. */ | |
7fb9f789 | 1571 | { |
cf869cce NC |
1572 | /* Update all got->n_slots counters, including n_slots[R_32]. */ |
1573 | was_size = R_LAST; | |
7fb9f789 | 1574 | |
d3ce72d0 | 1575 | was = new_reloc; |
7fb9f789 | 1576 | } |
7fb9f789 | 1577 | else |
cf869cce NC |
1578 | { |
1579 | /* !!! We, probably, should emit an error rather then fail on assert | |
1580 | in such a case. */ | |
1581 | BFD_ASSERT (elf_m68k_reloc_got_type (was) | |
d3ce72d0 | 1582 | == elf_m68k_reloc_got_type (new_reloc)); |
cf869cce NC |
1583 | |
1584 | was_size = elf_m68k_reloc_got_offset_size (was); | |
1585 | } | |
1586 | ||
d3ce72d0 NC |
1587 | new_size = elf_m68k_reloc_got_offset_size (new_reloc); |
1588 | n_slots = elf_m68k_reloc_got_n_slots (new_reloc); | |
cf869cce NC |
1589 | |
1590 | while (was_size > new_size) | |
1591 | { | |
1592 | --was_size; | |
1593 | got->n_slots[was_size] += n_slots; | |
1594 | } | |
7fb9f789 | 1595 | |
d3ce72d0 | 1596 | if (new_reloc > was) |
cf869cce NC |
1597 | /* Relocations are ordered from bigger got offset size to lesser, |
1598 | so choose the relocation type with lesser offset size. */ | |
d3ce72d0 | 1599 | was = new_reloc; |
cf869cce NC |
1600 | |
1601 | return was; | |
7fb9f789 NC |
1602 | } |
1603 | ||
1604 | /* Update GOT counters when removing an entry of type TYPE. */ | |
1605 | ||
1606 | static void | |
cf869cce NC |
1607 | elf_m68k_remove_got_entry_type (struct elf_m68k_got *got, |
1608 | enum elf_m68k_reloc_type type) | |
7fb9f789 | 1609 | { |
cf869cce NC |
1610 | enum elf_m68k_got_offset_size os; |
1611 | bfd_vma n_slots; | |
7fb9f789 | 1612 | |
cf869cce | 1613 | n_slots = elf_m68k_reloc_got_n_slots (type); |
7fb9f789 | 1614 | |
cf869cce NC |
1615 | /* Decrese counter of slots with offset size corresponding to TYPE |
1616 | and all greater offset sizes. */ | |
1617 | for (os = elf_m68k_reloc_got_offset_size (type); os <= R_32; ++os) | |
1618 | { | |
1619 | BFD_ASSERT (got->n_slots[os] >= n_slots); | |
7fb9f789 | 1620 | |
cf869cce | 1621 | got->n_slots[os] -= n_slots; |
7fb9f789 NC |
1622 | } |
1623 | } | |
1624 | ||
1625 | /* Add new or update existing entry to GOT. | |
1626 | H, ABFD, TYPE and SYMNDX is data for the entry. | |
1627 | INFO is a context where memory should be allocated. */ | |
1628 | ||
1629 | static struct elf_m68k_got_entry * | |
1630 | elf_m68k_add_entry_to_got (struct elf_m68k_got *got, | |
1631 | struct elf_link_hash_entry *h, | |
1632 | const bfd *abfd, | |
cf869cce NC |
1633 | enum elf_m68k_reloc_type reloc_type, |
1634 | unsigned long symndx, | |
7fb9f789 NC |
1635 | struct bfd_link_info *info) |
1636 | { | |
1637 | struct elf_m68k_got_entry_key key_; | |
1638 | struct elf_m68k_got_entry *entry; | |
1639 | ||
1640 | if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0) | |
1641 | elf_m68k_hash_entry (h)->got_entry_key | |
1642 | = elf_m68k_multi_got (info)->global_symndx++; | |
1643 | ||
cf869cce | 1644 | elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type); |
7fb9f789 NC |
1645 | |
1646 | entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info); | |
1647 | if (entry == NULL) | |
1648 | return NULL; | |
1649 | ||
cf869cce NC |
1650 | /* Determine entry's type and update got->n_slots counters. */ |
1651 | entry->key_.type = elf_m68k_update_got_entry_type (got, | |
1652 | entry->key_.type, | |
1653 | reloc_type); | |
1654 | ||
7fb9f789 NC |
1655 | /* Update refcount. */ |
1656 | ++entry->u.s1.refcount; | |
1657 | ||
1658 | if (entry->u.s1.refcount == 1) | |
1659 | /* We see this entry for the first time. */ | |
1660 | { | |
1661 | if (entry->key_.bfd != NULL) | |
cf869cce | 1662 | got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type); |
7fb9f789 NC |
1663 | } |
1664 | ||
cf869cce | 1665 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); |
7fb9f789 | 1666 | |
cf869cce NC |
1667 | if ((got->n_slots[R_8] |
1668 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1669 | || (got->n_slots[R_16] | |
1670 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1671 | /* This BFD has too many relocation. */ |
1672 | { | |
cf869cce | 1673 | if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) |
7fb9f789 | 1674 | (*_bfd_error_handler) (_("%B: GOT overflow: " |
cf869cce NC |
1675 | "Number of relocations with 8-bit " |
1676 | "offset > %d"), | |
7fb9f789 | 1677 | abfd, |
cf869cce | 1678 | ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)); |
7fb9f789 NC |
1679 | else |
1680 | (*_bfd_error_handler) (_("%B: GOT overflow: " | |
cf869cce NC |
1681 | "Number of relocations with 8- or 16-bit " |
1682 | "offset > %d"), | |
7fb9f789 | 1683 | abfd, |
cf869cce | 1684 | ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)); |
7fb9f789 NC |
1685 | |
1686 | return NULL; | |
1687 | } | |
1688 | ||
1689 | return entry; | |
1690 | } | |
1691 | ||
1692 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
1693 | ||
1694 | static hashval_t | |
1695 | elf_m68k_bfd2got_entry_hash (const void *entry) | |
1696 | { | |
1697 | const struct elf_m68k_bfd2got_entry *e; | |
1698 | ||
1699 | e = (const struct elf_m68k_bfd2got_entry *) entry; | |
1700 | ||
1701 | return e->bfd->id; | |
1702 | } | |
1703 | ||
1704 | /* Check whether two hash entries have the same bfd. */ | |
1705 | ||
1706 | static int | |
1707 | elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2) | |
1708 | { | |
1709 | const struct elf_m68k_bfd2got_entry *e1; | |
1710 | const struct elf_m68k_bfd2got_entry *e2; | |
1711 | ||
1712 | e1 = (const struct elf_m68k_bfd2got_entry *) entry1; | |
1713 | e2 = (const struct elf_m68k_bfd2got_entry *) entry2; | |
1714 | ||
1715 | return e1->bfd == e2->bfd; | |
1716 | } | |
1717 | ||
1718 | /* Destruct a bfd2got entry. */ | |
1719 | ||
1720 | static void | |
1721 | elf_m68k_bfd2got_entry_del (void *_entry) | |
1722 | { | |
1723 | struct elf_m68k_bfd2got_entry *entry; | |
1724 | ||
1725 | entry = (struct elf_m68k_bfd2got_entry *) _entry; | |
1726 | ||
1727 | BFD_ASSERT (entry->got != NULL); | |
1728 | elf_m68k_clear_got (entry->got); | |
1729 | } | |
1730 | ||
1731 | /* Find existing or create new (depending on HOWTO) bfd2got entry in | |
1732 | MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where | |
1733 | memory should be allocated. */ | |
1734 | ||
1735 | static struct elf_m68k_bfd2got_entry * | |
1736 | elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got, | |
1737 | const bfd *abfd, | |
1738 | enum elf_m68k_get_entry_howto howto, | |
1739 | struct bfd_link_info *info) | |
1740 | { | |
1741 | struct elf_m68k_bfd2got_entry entry_; | |
1742 | void **ptr; | |
1743 | struct elf_m68k_bfd2got_entry *entry; | |
1744 | ||
1745 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1746 | ||
1747 | if (multi_got->bfd2got == NULL) | |
1748 | /* This is the first GOT. Initialize bfd2got. */ | |
1749 | { | |
1750 | if (howto == SEARCH) | |
1751 | return NULL; | |
1752 | ||
1753 | multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash, | |
1754 | elf_m68k_bfd2got_entry_eq, | |
1755 | elf_m68k_bfd2got_entry_del); | |
1756 | if (multi_got->bfd2got == NULL) | |
1757 | { | |
1758 | bfd_set_error (bfd_error_no_memory); | |
1759 | return NULL; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | entry_.bfd = abfd; | |
1764 | ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH | |
1765 | ? INSERT : NO_INSERT)); | |
1766 | if (ptr == NULL) | |
1767 | { | |
1768 | if (howto == SEARCH) | |
1769 | /* Entry not found. */ | |
1770 | return NULL; | |
1771 | ||
1772 | /* We're out of memory. */ | |
1773 | bfd_set_error (bfd_error_no_memory); | |
1774 | return NULL; | |
1775 | } | |
1776 | ||
1777 | if (*ptr == NULL) | |
1778 | /* Entry was not found. Create new one. */ | |
1779 | { | |
1780 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1781 | ||
1782 | entry = ((struct elf_m68k_bfd2got_entry *) | |
1783 | bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry))); | |
1784 | if (entry == NULL) | |
1785 | return NULL; | |
1786 | ||
1787 | entry->bfd = abfd; | |
1788 | ||
1789 | entry->got = elf_m68k_create_empty_got (info); | |
1790 | if (entry->got == NULL) | |
1791 | return NULL; | |
1792 | ||
1793 | *ptr = entry; | |
1794 | } | |
1795 | else | |
1796 | { | |
1797 | BFD_ASSERT (howto != MUST_CREATE); | |
1798 | ||
1799 | /* Return existing entry. */ | |
1800 | entry = *ptr; | |
1801 | } | |
1802 | ||
1803 | return entry; | |
1804 | } | |
1805 | ||
1806 | struct elf_m68k_can_merge_gots_arg | |
1807 | { | |
1808 | /* A current_got that we constructing a DIFF against. */ | |
1809 | struct elf_m68k_got *big; | |
1810 | ||
1811 | /* GOT holding entries not present or that should be changed in | |
1812 | BIG. */ | |
1813 | struct elf_m68k_got *diff; | |
1814 | ||
1815 | /* Context where to allocate memory. */ | |
1816 | struct bfd_link_info *info; | |
1817 | ||
1818 | /* Error flag. */ | |
1819 | bfd_boolean error_p; | |
1820 | }; | |
1821 | ||
1822 | /* Process a single entry from the small GOT to see if it should be added | |
1823 | or updated in the big GOT. */ | |
1824 | ||
1825 | static int | |
1826 | elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg) | |
1827 | { | |
1828 | const struct elf_m68k_got_entry *entry1; | |
1829 | struct elf_m68k_can_merge_gots_arg *arg; | |
1830 | const struct elf_m68k_got_entry *entry2; | |
cf869cce | 1831 | enum elf_m68k_reloc_type type; |
7fb9f789 NC |
1832 | |
1833 | entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr; | |
1834 | arg = (struct elf_m68k_can_merge_gots_arg *) _arg; | |
1835 | ||
1836 | entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL); | |
1837 | ||
1838 | if (entry2 != NULL) | |
cf869cce | 1839 | /* We found an existing entry. Check if we should update it. */ |
7fb9f789 | 1840 | { |
cf869cce NC |
1841 | type = elf_m68k_update_got_entry_type (arg->diff, |
1842 | entry2->key_.type, | |
1843 | entry1->key_.type); | |
7fb9f789 | 1844 | |
cf869cce | 1845 | if (type == entry2->key_.type) |
7fb9f789 NC |
1846 | /* ENTRY1 doesn't update data in ENTRY2. Skip it. |
1847 | To skip creation of difference entry we use the type, | |
1848 | which we won't see in GOT entries for sure. */ | |
cf869cce | 1849 | type = R_68K_max; |
7fb9f789 NC |
1850 | } |
1851 | else | |
cf869cce | 1852 | /* We didn't find the entry. Add entry1 to DIFF. */ |
7fb9f789 | 1853 | { |
cf869cce | 1854 | BFD_ASSERT (entry1->key_.type != R_68K_max); |
7fb9f789 | 1855 | |
cf869cce NC |
1856 | type = elf_m68k_update_got_entry_type (arg->diff, |
1857 | R_68K_max, entry1->key_.type); | |
7fb9f789 | 1858 | |
7fb9f789 | 1859 | if (entry1->key_.bfd != NULL) |
cf869cce | 1860 | arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type); |
7fb9f789 NC |
1861 | } |
1862 | ||
cf869cce | 1863 | if (type != R_68K_max) |
7fb9f789 NC |
1864 | /* Create an entry in DIFF. */ |
1865 | { | |
1866 | struct elf_m68k_got_entry *entry; | |
1867 | ||
1868 | entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE, | |
1869 | arg->info); | |
1870 | if (entry == NULL) | |
1871 | { | |
1872 | arg->error_p = TRUE; | |
1873 | return 0; | |
1874 | } | |
1875 | ||
cf869cce | 1876 | entry->key_.type = type; |
7fb9f789 NC |
1877 | } |
1878 | ||
1879 | return 1; | |
1880 | } | |
1881 | ||
1882 | /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it. | |
1883 | Construct DIFF GOT holding the entries which should be added or updated | |
1884 | in BIG GOT to accumulate information from SMALL. | |
1885 | INFO is the context where memory should be allocated. */ | |
1886 | ||
1887 | static bfd_boolean | |
1888 | elf_m68k_can_merge_gots (struct elf_m68k_got *big, | |
1889 | const struct elf_m68k_got *small, | |
1890 | struct bfd_link_info *info, | |
1891 | struct elf_m68k_got *diff) | |
1892 | { | |
1893 | struct elf_m68k_can_merge_gots_arg arg_; | |
1894 | ||
1895 | BFD_ASSERT (small->offset == (bfd_vma) -1); | |
1896 | ||
1897 | arg_.big = big; | |
1898 | arg_.diff = diff; | |
1899 | arg_.info = info; | |
1900 | arg_.error_p = FALSE; | |
1901 | htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_); | |
1902 | if (arg_.error_p) | |
1903 | { | |
1904 | diff->offset = 0; | |
1905 | return FALSE; | |
1906 | } | |
1907 | ||
1908 | /* Check for overflow. */ | |
cf869cce NC |
1909 | if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8] |
1910 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1911 | || (big->n_slots[R_16] + arg_.diff->n_slots[R_16] | |
1912 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1913 | return FALSE; |
1914 | ||
1915 | return TRUE; | |
1916 | } | |
1917 | ||
1918 | struct elf_m68k_merge_gots_arg | |
1919 | { | |
1920 | /* The BIG got. */ | |
1921 | struct elf_m68k_got *big; | |
1922 | ||
1923 | /* Context where memory should be allocated. */ | |
1924 | struct bfd_link_info *info; | |
1925 | ||
1926 | /* Error flag. */ | |
1927 | bfd_boolean error_p; | |
1928 | }; | |
1929 | ||
1930 | /* Process a single entry from DIFF got. Add or update corresponding | |
1931 | entry in the BIG got. */ | |
1932 | ||
1933 | static int | |
1934 | elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg) | |
1935 | { | |
1936 | const struct elf_m68k_got_entry *from; | |
1937 | struct elf_m68k_merge_gots_arg *arg; | |
1938 | struct elf_m68k_got_entry *to; | |
1939 | ||
1940 | from = (const struct elf_m68k_got_entry *) *entry_ptr; | |
1941 | arg = (struct elf_m68k_merge_gots_arg *) _arg; | |
1942 | ||
1943 | to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE, | |
1944 | arg->info); | |
1945 | if (to == NULL) | |
1946 | { | |
1947 | arg->error_p = TRUE; | |
1948 | return 0; | |
1949 | } | |
1950 | ||
1951 | BFD_ASSERT (to->u.s1.refcount == 0); | |
1952 | /* All we need to merge is TYPE. */ | |
cf869cce | 1953 | to->key_.type = from->key_.type; |
7fb9f789 NC |
1954 | |
1955 | return 1; | |
1956 | } | |
1957 | ||
1958 | /* Merge data from DIFF to BIG. INFO is context where memory should be | |
1959 | allocated. */ | |
1960 | ||
1961 | static bfd_boolean | |
1962 | elf_m68k_merge_gots (struct elf_m68k_got *big, | |
1963 | struct elf_m68k_got *diff, | |
1964 | struct bfd_link_info *info) | |
1965 | { | |
1966 | if (diff->entries != NULL) | |
1967 | /* DIFF is not empty. Merge it into BIG GOT. */ | |
1968 | { | |
1969 | struct elf_m68k_merge_gots_arg arg_; | |
1970 | ||
1971 | /* Merge entries. */ | |
1972 | arg_.big = big; | |
1973 | arg_.info = info; | |
1974 | arg_.error_p = FALSE; | |
1975 | htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_); | |
1976 | if (arg_.error_p) | |
1977 | return FALSE; | |
1978 | ||
1979 | /* Merge counters. */ | |
cf869cce NC |
1980 | big->n_slots[R_8] += diff->n_slots[R_8]; |
1981 | big->n_slots[R_16] += diff->n_slots[R_16]; | |
1982 | big->n_slots[R_32] += diff->n_slots[R_32]; | |
1983 | big->local_n_slots += diff->local_n_slots; | |
7fb9f789 NC |
1984 | } |
1985 | else | |
1986 | /* DIFF is empty. */ | |
1987 | { | |
cf869cce NC |
1988 | BFD_ASSERT (diff->n_slots[R_8] == 0); |
1989 | BFD_ASSERT (diff->n_slots[R_16] == 0); | |
1990 | BFD_ASSERT (diff->n_slots[R_32] == 0); | |
1991 | BFD_ASSERT (diff->local_n_slots == 0); | |
7fb9f789 NC |
1992 | } |
1993 | ||
1994 | BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p | |
cf869cce NC |
1995 | || ((big->n_slots[R_8] |
1996 | <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1997 | && (big->n_slots[R_16] | |
1998 | <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))); | |
7fb9f789 NC |
1999 | |
2000 | return TRUE; | |
2001 | } | |
2002 | ||
2003 | struct elf_m68k_finalize_got_offsets_arg | |
2004 | { | |
cf869cce NC |
2005 | /* Ranges of the offsets for GOT entries. |
2006 | R_x entries receive offsets between offset1[R_x] and offset2[R_x]. | |
2007 | R_x is R_8, R_16 and R_32. */ | |
2008 | bfd_vma *offset1; | |
2009 | bfd_vma *offset2; | |
7fb9f789 NC |
2010 | |
2011 | /* Mapping from global symndx to global symbols. | |
2012 | This is used to build lists of got entries for global symbols. */ | |
2013 | struct elf_m68k_link_hash_entry **symndx2h; | |
cf869cce NC |
2014 | |
2015 | bfd_vma n_ldm_entries; | |
7fb9f789 NC |
2016 | }; |
2017 | ||
2018 | /* Assign ENTRY an offset. Build list of GOT entries for global symbols | |
2019 | along the way. */ | |
2020 | ||
2021 | static int | |
2022 | elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg) | |
2023 | { | |
2024 | struct elf_m68k_got_entry *entry; | |
2025 | struct elf_m68k_finalize_got_offsets_arg *arg; | |
2026 | ||
cf869cce NC |
2027 | enum elf_m68k_got_offset_size got_offset_size; |
2028 | bfd_vma entry_size; | |
2029 | ||
7fb9f789 NC |
2030 | entry = (struct elf_m68k_got_entry *) *entry_ptr; |
2031 | arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg; | |
2032 | ||
2033 | /* This should be a fresh entry created in elf_m68k_can_merge_gots. */ | |
2034 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2035 | ||
cf869cce NC |
2036 | /* Get GOT offset size for the entry . */ |
2037 | got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type); | |
7fb9f789 | 2038 | |
cf869cce NC |
2039 | /* Calculate entry size in bytes. */ |
2040 | entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type); | |
7fb9f789 | 2041 | |
cf869cce NC |
2042 | /* Check if we should switch to negative range of the offsets. */ |
2043 | if (arg->offset1[got_offset_size] + entry_size | |
2044 | > arg->offset2[got_offset_size]) | |
2045 | { | |
2046 | /* Verify that this is the only switch to negative range for | |
2047 | got_offset_size. If this assertion fails, then we've miscalculated | |
2048 | range for got_offset_size entries in | |
2049 | elf_m68k_finalize_got_offsets. */ | |
2050 | BFD_ASSERT (arg->offset2[got_offset_size] | |
2051 | != arg->offset2[-(int) got_offset_size - 1]); | |
2052 | ||
2053 | /* Switch. */ | |
2054 | arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1]; | |
2055 | arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1]; | |
2056 | ||
2057 | /* Verify that now we have enough room for the entry. */ | |
2058 | BFD_ASSERT (arg->offset1[got_offset_size] + entry_size | |
2059 | <= arg->offset2[got_offset_size]); | |
7fb9f789 NC |
2060 | } |
2061 | ||
cf869cce NC |
2062 | /* Assign offset to entry. */ |
2063 | entry->u.s2.offset = arg->offset1[got_offset_size]; | |
2064 | arg->offset1[got_offset_size] += entry_size; | |
2065 | ||
7fb9f789 NC |
2066 | if (entry->key_.bfd == NULL) |
2067 | /* Hook up this entry into the list of got_entries of H. */ | |
2068 | { | |
2069 | struct elf_m68k_link_hash_entry *h; | |
2070 | ||
7fb9f789 | 2071 | h = arg->symndx2h[entry->key_.symndx]; |
cf869cce NC |
2072 | if (h != NULL) |
2073 | { | |
2074 | entry->u.s2.next = h->glist; | |
2075 | h->glist = entry; | |
2076 | } | |
2077 | else | |
2078 | /* This should be the entry for TLS_LDM relocation then. */ | |
2079 | { | |
2080 | BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type) | |
2081 | == R_68K_TLS_LDM32) | |
2082 | && entry->key_.symndx == 0); | |
7fb9f789 | 2083 | |
cf869cce NC |
2084 | ++arg->n_ldm_entries; |
2085 | } | |
7fb9f789 NC |
2086 | } |
2087 | else | |
2088 | /* This entry is for local symbol. */ | |
2089 | entry->u.s2.next = NULL; | |
2090 | ||
2091 | return 1; | |
2092 | } | |
2093 | ||
2094 | /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we | |
2095 | should use negative offsets. | |
2096 | Build list of GOT entries for global symbols along the way. | |
2097 | SYMNDX2H is mapping from global symbol indices to actual | |
cf869cce NC |
2098 | global symbols. |
2099 | Return offset at which next GOT should start. */ | |
7fb9f789 NC |
2100 | |
2101 | static void | |
2102 | elf_m68k_finalize_got_offsets (struct elf_m68k_got *got, | |
2103 | bfd_boolean use_neg_got_offsets_p, | |
cf869cce NC |
2104 | struct elf_m68k_link_hash_entry **symndx2h, |
2105 | bfd_vma *final_offset, bfd_vma *n_ldm_entries) | |
7fb9f789 NC |
2106 | { |
2107 | struct elf_m68k_finalize_got_offsets_arg arg_; | |
cf869cce NC |
2108 | bfd_vma offset1_[2 * R_LAST]; |
2109 | bfd_vma offset2_[2 * R_LAST]; | |
2110 | int i; | |
2111 | bfd_vma start_offset; | |
7fb9f789 NC |
2112 | |
2113 | BFD_ASSERT (got->offset != (bfd_vma) -1); | |
2114 | ||
2115 | /* We set entry offsets relative to the .got section (and not the | |
2116 | start of a particular GOT), so that we can use them in | |
cf869cce | 2117 | finish_dynamic_symbol without needing to know the GOT which they come |
7fb9f789 NC |
2118 | from. */ |
2119 | ||
cf869cce NC |
2120 | /* Put offset1 in the middle of offset1_, same for offset2. */ |
2121 | arg_.offset1 = offset1_ + R_LAST; | |
2122 | arg_.offset2 = offset2_ + R_LAST; | |
2123 | ||
2124 | start_offset = got->offset; | |
2125 | ||
7fb9f789 | 2126 | if (use_neg_got_offsets_p) |
cf869cce NC |
2127 | /* Setup both negative and positive ranges for R_8, R_16 and R_32. */ |
2128 | i = -(int) R_32 - 1; | |
2129 | else | |
2130 | /* Setup positives ranges for R_8, R_16 and R_32. */ | |
2131 | i = (int) R_8; | |
2132 | ||
2133 | for (; i <= (int) R_32; ++i) | |
7fb9f789 | 2134 | { |
cf869cce | 2135 | int j; |
7fb9f789 NC |
2136 | size_t n; |
2137 | ||
cf869cce NC |
2138 | /* Set beginning of the range of offsets I. */ |
2139 | arg_.offset1[i] = start_offset; | |
7fb9f789 | 2140 | |
cf869cce NC |
2141 | /* Calculate number of slots that require I offsets. */ |
2142 | j = (i >= 0) ? i : -i - 1; | |
2143 | n = (j >= 1) ? got->n_slots[j - 1] : 0; | |
2144 | n = got->n_slots[j] - n; | |
7fb9f789 | 2145 | |
cf869cce NC |
2146 | if (use_neg_got_offsets_p && n != 0) |
2147 | { | |
2148 | if (i < 0) | |
2149 | /* We first fill the positive side of the range, so we might | |
2150 | end up with one empty slot at that side when we can't fit | |
2151 | whole 2-slot entry. Account for that at negative side of | |
2152 | the interval with one additional entry. */ | |
2153 | n = n / 2 + 1; | |
2154 | else | |
2155 | /* When the number of slots is odd, make positive side of the | |
2156 | range one entry bigger. */ | |
2157 | n = (n + 1) / 2; | |
2158 | } | |
2159 | ||
2160 | /* N is the number of slots that require I offsets. | |
2161 | Calculate length of the range for I offsets. */ | |
2162 | n = 4 * n; | |
7fb9f789 | 2163 | |
cf869cce NC |
2164 | /* Set end of the range. */ |
2165 | arg_.offset2[i] = start_offset + n; | |
7fb9f789 | 2166 | |
cf869cce | 2167 | start_offset = arg_.offset2[i]; |
7fb9f789 NC |
2168 | } |
2169 | ||
cf869cce NC |
2170 | if (!use_neg_got_offsets_p) |
2171 | /* Make sure that if we try to switch to negative offsets in | |
2172 | elf_m68k_finalize_got_offsets_1, the assert therein will catch | |
2173 | the bug. */ | |
2174 | for (i = R_8; i <= R_32; ++i) | |
2175 | arg_.offset2[-i - 1] = arg_.offset2[i]; | |
7fb9f789 | 2176 | |
cf869cce NC |
2177 | /* Setup got->offset. offset1[R_8] is either in the middle or at the |
2178 | beginning of GOT depending on use_neg_got_offsets_p. */ | |
2179 | got->offset = arg_.offset1[R_8]; | |
7fb9f789 | 2180 | |
cf869cce NC |
2181 | arg_.symndx2h = symndx2h; |
2182 | arg_.n_ldm_entries = 0; | |
7fb9f789 | 2183 | |
cf869cce NC |
2184 | /* Assign offsets. */ |
2185 | htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_); | |
7fb9f789 | 2186 | |
cf869cce NC |
2187 | /* Check offset ranges we have actually assigned. */ |
2188 | for (i = (int) R_8; i <= (int) R_32; ++i) | |
2189 | BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4); | |
7fb9f789 | 2190 | |
cf869cce NC |
2191 | *final_offset = start_offset; |
2192 | *n_ldm_entries = arg_.n_ldm_entries; | |
7fb9f789 NC |
2193 | } |
2194 | ||
2195 | struct elf_m68k_partition_multi_got_arg | |
2196 | { | |
2197 | /* The GOT we are adding entries to. Aka big got. */ | |
2198 | struct elf_m68k_got *current_got; | |
2199 | ||
2200 | /* Offset to assign the next CURRENT_GOT. */ | |
2201 | bfd_vma offset; | |
2202 | ||
2203 | /* Context where memory should be allocated. */ | |
2204 | struct bfd_link_info *info; | |
2205 | ||
cf869cce | 2206 | /* Total number of slots in the .got section. |
7fb9f789 | 2207 | This is used to calculate size of the .got and .rela.got sections. */ |
cf869cce | 2208 | bfd_vma n_slots; |
7fb9f789 | 2209 | |
cf869cce NC |
2210 | /* Difference in numbers of allocated slots in the .got section |
2211 | and necessary relocations in the .rela.got section. | |
7fb9f789 | 2212 | This is used to calculate size of the .rela.got section. */ |
cf869cce | 2213 | bfd_vma slots_relas_diff; |
7fb9f789 NC |
2214 | |
2215 | /* Error flag. */ | |
2216 | bfd_boolean error_p; | |
2217 | ||
2218 | /* Mapping from global symndx to global symbols. | |
2219 | This is used to build lists of got entries for global symbols. */ | |
2220 | struct elf_m68k_link_hash_entry **symndx2h; | |
2221 | }; | |
2222 | ||
cf869cce NC |
2223 | static void |
2224 | elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg) | |
2225 | { | |
2226 | bfd_vma n_ldm_entries; | |
2227 | ||
2228 | elf_m68k_finalize_got_offsets (arg->current_got, | |
2229 | (elf_m68k_hash_table (arg->info) | |
2230 | ->use_neg_got_offsets_p), | |
2231 | arg->symndx2h, | |
2232 | &arg->offset, &n_ldm_entries); | |
2233 | ||
2234 | arg->n_slots += arg->current_got->n_slots[R_32]; | |
2235 | ||
2236 | if (!arg->info->shared) | |
2237 | /* If we are generating a shared object, we need to | |
2238 | output a R_68K_RELATIVE reloc so that the dynamic | |
2239 | linker can adjust this GOT entry. Overwise we | |
2240 | don't need space in .rela.got for local symbols. */ | |
2241 | arg->slots_relas_diff += arg->current_got->local_n_slots; | |
2242 | ||
2243 | /* @LDM relocations require a 2-slot GOT entry, but only | |
2244 | one relocation. Account for that. */ | |
2245 | arg->slots_relas_diff += n_ldm_entries; | |
2246 | ||
2247 | BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots); | |
2248 | } | |
2249 | ||
2250 | ||
7fb9f789 NC |
2251 | /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT |
2252 | or start a new CURRENT_GOT. */ | |
2253 | ||
2254 | static int | |
2255 | elf_m68k_partition_multi_got_1 (void **_entry, void *_arg) | |
2256 | { | |
2257 | struct elf_m68k_bfd2got_entry *entry; | |
2258 | struct elf_m68k_partition_multi_got_arg *arg; | |
2259 | struct elf_m68k_got *got; | |
7fb9f789 NC |
2260 | struct elf_m68k_got diff_; |
2261 | struct elf_m68k_got *diff; | |
2262 | ||
2263 | entry = (struct elf_m68k_bfd2got_entry *) *_entry; | |
2264 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2265 | ||
2266 | got = entry->got; | |
2267 | BFD_ASSERT (got != NULL); | |
2268 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2269 | ||
2270 | diff = NULL; | |
2271 | ||
2272 | if (arg->current_got != NULL) | |
2273 | /* Construct diff. */ | |
2274 | { | |
2275 | diff = &diff_; | |
cf869cce | 2276 | elf_m68k_init_got (diff); |
7fb9f789 NC |
2277 | |
2278 | if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff)) | |
2279 | { | |
2280 | if (diff->offset == 0) | |
2281 | /* Offset set to 0 in the diff_ indicates an error. */ | |
2282 | { | |
2283 | arg->error_p = TRUE; | |
2284 | goto final_return; | |
2285 | } | |
2286 | ||
2287 | if (elf_m68k_hash_table (arg->info)->allow_multigot_p) | |
2288 | { | |
2289 | elf_m68k_clear_got (diff); | |
cf869cce | 2290 | /* Schedule to finish up current_got and start new one. */ |
7fb9f789 NC |
2291 | diff = NULL; |
2292 | } | |
2293 | /* else | |
2294 | Merge GOTs no matter what. If big GOT overflows, | |
2295 | we'll fail in relocate_section due to truncated relocations. | |
2296 | ||
2297 | ??? May be fail earlier? E.g., in can_merge_gots. */ | |
2298 | } | |
2299 | } | |
2300 | else | |
2301 | /* Diff of got against empty current_got is got itself. */ | |
2302 | { | |
cf869cce | 2303 | /* Create empty current_got to put subsequent GOTs to. */ |
7fb9f789 NC |
2304 | arg->current_got = elf_m68k_create_empty_got (arg->info); |
2305 | if (arg->current_got == NULL) | |
2306 | { | |
2307 | arg->error_p = TRUE; | |
2308 | goto final_return; | |
2309 | } | |
2310 | ||
2311 | arg->current_got->offset = arg->offset; | |
2312 | ||
2313 | diff = got; | |
2314 | } | |
2315 | ||
7fb9f789 NC |
2316 | if (diff != NULL) |
2317 | { | |
cf869cce | 2318 | if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info)) |
7fb9f789 NC |
2319 | { |
2320 | arg->error_p = TRUE; | |
2321 | goto final_return; | |
2322 | } | |
2323 | ||
2324 | /* Now we can free GOT. */ | |
2325 | elf_m68k_clear_got (got); | |
2326 | ||
cf869cce | 2327 | entry->got = arg->current_got; |
7fb9f789 NC |
2328 | } |
2329 | else | |
2330 | { | |
7fb9f789 | 2331 | /* Finish up current_got. */ |
cf869cce | 2332 | elf_m68k_partition_multi_got_2 (arg); |
7fb9f789 | 2333 | |
cf869cce NC |
2334 | /* Schedule to start a new current_got. */ |
2335 | arg->current_got = NULL; | |
7fb9f789 NC |
2336 | |
2337 | /* Retry. */ | |
2338 | if (!elf_m68k_partition_multi_got_1 (_entry, _arg)) | |
2339 | { | |
2340 | BFD_ASSERT (arg->error_p); | |
2341 | goto final_return; | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | final_return: | |
2346 | if (diff != NULL) | |
2347 | elf_m68k_clear_got (diff); | |
2348 | ||
2349 | return arg->error_p == FALSE ? 1 : 0; | |
2350 | } | |
2351 | ||
2352 | /* Helper function to build symndx2h mapping. */ | |
2353 | ||
2354 | static bfd_boolean | |
2355 | elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h, | |
2356 | void *_arg) | |
2357 | { | |
2358 | struct elf_m68k_link_hash_entry *h; | |
2359 | ||
2360 | h = elf_m68k_hash_entry (_h); | |
2361 | ||
2362 | if (h->got_entry_key != 0) | |
2363 | /* H has at least one entry in the GOT. */ | |
2364 | { | |
2365 | struct elf_m68k_partition_multi_got_arg *arg; | |
2366 | ||
2367 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2368 | ||
2369 | BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL); | |
2370 | arg->symndx2h[h->got_entry_key] = h; | |
2371 | } | |
2372 | ||
2373 | return TRUE; | |
2374 | } | |
2375 | ||
2376 | /* Merge GOTs of some BFDs, assign offsets to GOT entries and build | |
2377 | lists of GOT entries for global symbols. | |
2378 | Calculate sizes of .got and .rela.got sections. */ | |
2379 | ||
2380 | static bfd_boolean | |
2381 | elf_m68k_partition_multi_got (struct bfd_link_info *info) | |
2382 | { | |
2383 | struct elf_m68k_multi_got *multi_got; | |
2384 | struct elf_m68k_partition_multi_got_arg arg_; | |
2385 | ||
2386 | multi_got = elf_m68k_multi_got (info); | |
2387 | ||
2388 | arg_.current_got = NULL; | |
2389 | arg_.offset = 0; | |
2390 | arg_.info = info; | |
cf869cce NC |
2391 | arg_.n_slots = 0; |
2392 | arg_.slots_relas_diff = 0; | |
7fb9f789 NC |
2393 | arg_.error_p = FALSE; |
2394 | ||
2395 | if (multi_got->bfd2got != NULL) | |
2396 | { | |
2397 | /* Initialize symndx2h mapping. */ | |
2398 | { | |
2399 | arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx | |
2400 | * sizeof (*arg_.symndx2h)); | |
2401 | if (arg_.symndx2h == NULL) | |
2402 | return FALSE; | |
2403 | ||
2404 | elf_link_hash_traverse (elf_hash_table (info), | |
2405 | elf_m68k_init_symndx2h_1, &arg_); | |
2406 | } | |
2407 | ||
2408 | /* Partition. */ | |
2409 | htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1, | |
2410 | &arg_); | |
2411 | if (arg_.error_p) | |
2412 | { | |
2413 | free (arg_.symndx2h); | |
2414 | arg_.symndx2h = NULL; | |
2415 | ||
2416 | return FALSE; | |
2417 | } | |
2418 | ||
2419 | /* Finish up last current_got. */ | |
cf869cce | 2420 | elf_m68k_partition_multi_got_2 (&arg_); |
7fb9f789 NC |
2421 | |
2422 | free (arg_.symndx2h); | |
266abb8f | 2423 | } |
7fb9f789 NC |
2424 | |
2425 | if (elf_hash_table (info)->dynobj != NULL) | |
2426 | /* Set sizes of .got and .rela.got sections. */ | |
266abb8f | 2427 | { |
7fb9f789 | 2428 | asection *s; |
425c6cb0 | 2429 | |
3d4d4302 | 2430 | s = bfd_get_linker_section (elf_hash_table (info)->dynobj, ".got"); |
7fb9f789 | 2431 | if (s != NULL) |
cf869cce | 2432 | s->size = arg_.offset; |
425c6cb0 | 2433 | else |
cf869cce | 2434 | BFD_ASSERT (arg_.offset == 0); |
425c6cb0 | 2435 | |
cf869cce NC |
2436 | BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots); |
2437 | arg_.n_slots -= arg_.slots_relas_diff; | |
7fb9f789 | 2438 | |
3d4d4302 | 2439 | s = bfd_get_linker_section (elf_hash_table (info)->dynobj, ".rela.got"); |
7fb9f789 | 2440 | if (s != NULL) |
cf869cce | 2441 | s->size = arg_.n_slots * sizeof (Elf32_External_Rela); |
3bdcfdf4 | 2442 | else |
cf869cce | 2443 | BFD_ASSERT (arg_.n_slots == 0); |
9e1281c7 | 2444 | } |
7fb9f789 NC |
2445 | else |
2446 | BFD_ASSERT (multi_got->bfd2got == NULL); | |
9e1281c7 | 2447 | |
b34976b6 | 2448 | return TRUE; |
9e1281c7 CM |
2449 | } |
2450 | ||
7fb9f789 NC |
2451 | /* Specialized version of elf_m68k_get_got_entry that returns pointer |
2452 | to hashtable slot, thus allowing removal of entry via | |
2453 | elf_m68k_remove_got_entry. */ | |
2454 | ||
2455 | static struct elf_m68k_got_entry ** | |
2456 | elf_m68k_find_got_entry_ptr (struct elf_m68k_got *got, | |
2457 | struct elf_m68k_got_entry_key *key) | |
9e1281c7 | 2458 | { |
7fb9f789 NC |
2459 | void **ptr; |
2460 | struct elf_m68k_got_entry entry_; | |
2461 | struct elf_m68k_got_entry **entry_ptr; | |
9e1281c7 | 2462 | |
7fb9f789 NC |
2463 | entry_.key_ = *key; |
2464 | ptr = htab_find_slot (got->entries, &entry_, NO_INSERT); | |
2465 | BFD_ASSERT (ptr != NULL); | |
9e1281c7 | 2466 | |
7fb9f789 | 2467 | entry_ptr = (struct elf_m68k_got_entry **) ptr; |
9e1281c7 | 2468 | |
7fb9f789 NC |
2469 | return entry_ptr; |
2470 | } | |
9e1281c7 | 2471 | |
7fb9f789 | 2472 | /* Remove entry pointed to by ENTRY_PTR from GOT. */ |
9e1281c7 | 2473 | |
7fb9f789 NC |
2474 | static void |
2475 | elf_m68k_remove_got_entry (struct elf_m68k_got *got, | |
2476 | struct elf_m68k_got_entry **entry_ptr) | |
2477 | { | |
2478 | struct elf_m68k_got_entry *entry; | |
2479 | ||
2480 | entry = *entry_ptr; | |
2481 | ||
2482 | /* Check that offsets have not been finalized yet. */ | |
2483 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2484 | /* Check that this entry is indeed unused. */ | |
2485 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2486 | ||
cf869cce | 2487 | elf_m68k_remove_got_entry_type (got, entry->key_.type); |
7fb9f789 NC |
2488 | |
2489 | if (entry->key_.bfd != NULL) | |
cf869cce NC |
2490 | got->local_n_slots -= elf_m68k_reloc_got_n_slots (entry->key_.type); |
2491 | ||
2492 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); | |
7fb9f789 NC |
2493 | |
2494 | htab_clear_slot (got->entries, (void **) entry_ptr); | |
2495 | } | |
2496 | ||
2497 | /* Copy any information related to dynamic linking from a pre-existing | |
2498 | symbol to a newly created symbol. Also called to copy flags and | |
2499 | other back-end info to a weakdef, in which case the symbol is not | |
2500 | newly created and plt/got refcounts and dynamic indices should not | |
2501 | be copied. */ | |
2502 | ||
2503 | static void | |
2504 | elf_m68k_copy_indirect_symbol (struct bfd_link_info *info, | |
2505 | struct elf_link_hash_entry *_dir, | |
2506 | struct elf_link_hash_entry *_ind) | |
2507 | { | |
2508 | struct elf_m68k_link_hash_entry *dir; | |
2509 | struct elf_m68k_link_hash_entry *ind; | |
2510 | ||
2511 | _bfd_elf_link_hash_copy_indirect (info, _dir, _ind); | |
2512 | ||
2513 | if (_ind->root.type != bfd_link_hash_indirect) | |
2514 | return; | |
2515 | ||
2516 | dir = elf_m68k_hash_entry (_dir); | |
2517 | ind = elf_m68k_hash_entry (_ind); | |
2518 | ||
e5f2b1de NC |
2519 | /* Any absolute non-dynamic relocations against an indirect or weak |
2520 | definition will be against the target symbol. */ | |
2521 | _dir->non_got_ref |= _ind->non_got_ref; | |
2522 | ||
7fb9f789 NC |
2523 | /* We might have a direct symbol already having entries in the GOTs. |
2524 | Update its key only in case indirect symbol has GOT entries and | |
2525 | assert that both indirect and direct symbols don't have GOT entries | |
2526 | at the same time. */ | |
2527 | if (ind->got_entry_key != 0) | |
266abb8f | 2528 | { |
7fb9f789 NC |
2529 | BFD_ASSERT (dir->got_entry_key == 0); |
2530 | /* Assert that GOTs aren't partioned yet. */ | |
2531 | BFD_ASSERT (ind->glist == NULL); | |
425c6cb0 | 2532 | |
7fb9f789 NC |
2533 | dir->got_entry_key = ind->got_entry_key; |
2534 | ind->got_entry_key = 0; | |
266abb8f | 2535 | } |
9e1281c7 | 2536 | } |
7fb9f789 | 2537 | |
252b5132 RH |
2538 | /* Look through the relocs for a section during the first phase, and |
2539 | allocate space in the global offset table or procedure linkage | |
2540 | table. */ | |
2541 | ||
b34976b6 | 2542 | static bfd_boolean |
2c3fc389 NC |
2543 | elf_m68k_check_relocs (bfd *abfd, |
2544 | struct bfd_link_info *info, | |
2545 | asection *sec, | |
2546 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
2547 | { |
2548 | bfd *dynobj; | |
2549 | Elf_Internal_Shdr *symtab_hdr; | |
2550 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
2551 | const Elf_Internal_Rela *rel; |
2552 | const Elf_Internal_Rela *rel_end; | |
2553 | asection *sgot; | |
2554 | asection *srelgot; | |
2555 | asection *sreloc; | |
7fb9f789 | 2556 | struct elf_m68k_got *got; |
252b5132 | 2557 | |
1049f94e | 2558 | if (info->relocatable) |
b34976b6 | 2559 | return TRUE; |
252b5132 RH |
2560 | |
2561 | dynobj = elf_hash_table (info)->dynobj; | |
2562 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2563 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 RH |
2564 | |
2565 | sgot = NULL; | |
2566 | srelgot = NULL; | |
2567 | sreloc = NULL; | |
2568 | ||
7fb9f789 NC |
2569 | got = NULL; |
2570 | ||
252b5132 RH |
2571 | rel_end = relocs + sec->reloc_count; |
2572 | for (rel = relocs; rel < rel_end; rel++) | |
2573 | { | |
2574 | unsigned long r_symndx; | |
2575 | struct elf_link_hash_entry *h; | |
2576 | ||
2577 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2578 | ||
2579 | if (r_symndx < symtab_hdr->sh_info) | |
2580 | h = NULL; | |
2581 | else | |
973a3492 L |
2582 | { |
2583 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2584 | while (h->root.type == bfd_link_hash_indirect | |
2585 | || h->root.type == bfd_link_hash_warning) | |
2586 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
2587 | |
2588 | /* PR15323, ref flags aren't set for references in the same | |
2589 | object. */ | |
2590 | h->root.non_ir_ref = 1; | |
973a3492 | 2591 | } |
252b5132 RH |
2592 | |
2593 | switch (ELF32_R_TYPE (rel->r_info)) | |
2594 | { | |
2595 | case R_68K_GOT8: | |
2596 | case R_68K_GOT16: | |
2597 | case R_68K_GOT32: | |
2598 | if (h != NULL | |
2599 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2600 | break; | |
2601 | /* Fall through. */ | |
cf869cce NC |
2602 | |
2603 | /* Relative GOT relocations. */ | |
252b5132 RH |
2604 | case R_68K_GOT8O: |
2605 | case R_68K_GOT16O: | |
2606 | case R_68K_GOT32O: | |
cf869cce NC |
2607 | /* Fall through. */ |
2608 | ||
2609 | /* TLS relocations. */ | |
2610 | case R_68K_TLS_GD8: | |
2611 | case R_68K_TLS_GD16: | |
2612 | case R_68K_TLS_GD32: | |
2613 | case R_68K_TLS_LDM8: | |
2614 | case R_68K_TLS_LDM16: | |
2615 | case R_68K_TLS_LDM32: | |
2616 | case R_68K_TLS_IE8: | |
2617 | case R_68K_TLS_IE16: | |
2618 | case R_68K_TLS_IE32: | |
2619 | ||
e5f2b1de NC |
2620 | case R_68K_TLS_TPREL32: |
2621 | case R_68K_TLS_DTPREL32: | |
2622 | ||
2623 | if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32 | |
2624 | && info->shared) | |
2625 | /* Do the special chorus for libraries with static TLS. */ | |
2626 | info->flags |= DF_STATIC_TLS; | |
2627 | ||
252b5132 RH |
2628 | /* This symbol requires a global offset table entry. */ |
2629 | ||
2630 | if (dynobj == NULL) | |
2631 | { | |
2632 | /* Create the .got section. */ | |
2633 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2634 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2635 | return FALSE; |
252b5132 RH |
2636 | } |
2637 | ||
2638 | if (sgot == NULL) | |
2639 | { | |
3d4d4302 | 2640 | sgot = bfd_get_linker_section (dynobj, ".got"); |
252b5132 RH |
2641 | BFD_ASSERT (sgot != NULL); |
2642 | } | |
2643 | ||
2644 | if (srelgot == NULL | |
2645 | && (h != NULL || info->shared)) | |
2646 | { | |
3d4d4302 | 2647 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
252b5132 RH |
2648 | if (srelgot == NULL) |
2649 | { | |
3d4d4302 AM |
2650 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
2651 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2652 | | SEC_READONLY); | |
2653 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
2654 | ".rela.got", | |
2655 | flags); | |
252b5132 | 2656 | if (srelgot == NULL |
252b5132 | 2657 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 2658 | return FALSE; |
252b5132 RH |
2659 | } |
2660 | } | |
2661 | ||
7fb9f789 | 2662 | if (got == NULL) |
252b5132 | 2663 | { |
7fb9f789 | 2664 | struct elf_m68k_bfd2got_entry *bfd2got_entry; |
252b5132 | 2665 | |
7fb9f789 NC |
2666 | bfd2got_entry |
2667 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
2668 | abfd, FIND_OR_CREATE, info); | |
2669 | if (bfd2got_entry == NULL) | |
2670 | return FALSE; | |
252b5132 | 2671 | |
7fb9f789 NC |
2672 | got = bfd2got_entry->got; |
2673 | BFD_ASSERT (got != NULL); | |
252b5132 | 2674 | } |
7fb9f789 NC |
2675 | |
2676 | { | |
2677 | struct elf_m68k_got_entry *got_entry; | |
2678 | ||
2679 | /* Add entry to got. */ | |
2680 | got_entry = elf_m68k_add_entry_to_got (got, h, abfd, | |
2681 | ELF32_R_TYPE (rel->r_info), | |
2682 | r_symndx, info); | |
2683 | if (got_entry == NULL) | |
2684 | return FALSE; | |
2685 | ||
2686 | if (got_entry->u.s1.refcount == 1) | |
2687 | { | |
2688 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2689 | if (h != NULL | |
2690 | && h->dynindx == -1 | |
2691 | && !h->forced_local) | |
2692 | { | |
2693 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
2694 | return FALSE; | |
2695 | } | |
7fb9f789 NC |
2696 | } |
2697 | } | |
2698 | ||
252b5132 RH |
2699 | break; |
2700 | ||
2701 | case R_68K_PLT8: | |
2702 | case R_68K_PLT16: | |
2703 | case R_68K_PLT32: | |
2704 | /* This symbol requires a procedure linkage table entry. We | |
2705 | actually build the entry in adjust_dynamic_symbol, | |
2706 | because this might be a case of linking PIC code which is | |
2707 | never referenced by a dynamic object, in which case we | |
2708 | don't need to generate a procedure linkage table entry | |
2709 | after all. */ | |
2710 | ||
2711 | /* If this is a local symbol, we resolve it directly without | |
2712 | creating a procedure linkage table entry. */ | |
2713 | if (h == NULL) | |
2714 | continue; | |
2715 | ||
f5385ebf | 2716 | h->needs_plt = 1; |
51b64d56 | 2717 | h->plt.refcount++; |
252b5132 RH |
2718 | break; |
2719 | ||
2720 | case R_68K_PLT8O: | |
2721 | case R_68K_PLT16O: | |
2722 | case R_68K_PLT32O: | |
2723 | /* This symbol requires a procedure linkage table entry. */ | |
2724 | ||
2725 | if (h == NULL) | |
2726 | { | |
2727 | /* It does not make sense to have this relocation for a | |
2728 | local symbol. FIXME: does it? How to handle it if | |
2729 | it does make sense? */ | |
2730 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2731 | return FALSE; |
252b5132 RH |
2732 | } |
2733 | ||
2734 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 2735 | if (h->dynindx == -1 |
f5385ebf | 2736 | && !h->forced_local) |
252b5132 | 2737 | { |
c152c796 | 2738 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2739 | return FALSE; |
252b5132 RH |
2740 | } |
2741 | ||
f5385ebf | 2742 | h->needs_plt = 1; |
51b64d56 | 2743 | h->plt.refcount++; |
252b5132 RH |
2744 | break; |
2745 | ||
2746 | case R_68K_PC8: | |
2747 | case R_68K_PC16: | |
2748 | case R_68K_PC32: | |
2749 | /* If we are creating a shared library and this is not a local | |
2750 | symbol, we need to copy the reloc into the shared library. | |
2751 | However when linking with -Bsymbolic and this is a global | |
2752 | symbol which is defined in an object we are including in the | |
2753 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2754 | reloc directly. At this point we have not seen all the input | |
2755 | files, so it is possible that DEF_REGULAR is not set now but | |
2756 | will be set later (it is never cleared). We account for that | |
2757 | possibility below by storing information in the | |
2758 | pcrel_relocs_copied field of the hash table entry. */ | |
2759 | if (!(info->shared | |
2760 | && (sec->flags & SEC_ALLOC) != 0 | |
2761 | && h != NULL | |
2762 | && (!info->symbolic | |
b6152c34 | 2763 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 2764 | || !h->def_regular))) |
252b5132 RH |
2765 | { |
2766 | if (h != NULL) | |
2767 | { | |
2768 | /* Make sure a plt entry is created for this symbol if | |
2769 | it turns out to be a function defined by a dynamic | |
2770 | object. */ | |
51b64d56 | 2771 | h->plt.refcount++; |
252b5132 RH |
2772 | } |
2773 | break; | |
2774 | } | |
2775 | /* Fall through. */ | |
2776 | case R_68K_8: | |
2777 | case R_68K_16: | |
2778 | case R_68K_32: | |
810e6986 NC |
2779 | /* We don't need to handle relocs into sections not going into |
2780 | the "real" output. */ | |
2781 | if ((sec->flags & SEC_ALLOC) == 0) | |
2782 | break; | |
2783 | ||
252b5132 RH |
2784 | if (h != NULL) |
2785 | { | |
2786 | /* Make sure a plt entry is created for this symbol if it | |
2787 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 2788 | h->plt.refcount++; |
e5f2b1de | 2789 | |
cab0ad83 | 2790 | if (info->executable) |
e5f2b1de NC |
2791 | /* This symbol needs a non-GOT reference. */ |
2792 | h->non_got_ref = 1; | |
252b5132 RH |
2793 | } |
2794 | ||
2795 | /* If we are creating a shared library, we need to copy the | |
2796 | reloc into the shared library. */ | |
810e6986 | 2797 | if (info->shared) |
252b5132 RH |
2798 | { |
2799 | /* When creating a shared object, we must copy these | |
2800 | reloc types into the output file. We create a reloc | |
2801 | section in dynobj and make room for this reloc. */ | |
2802 | if (sreloc == NULL) | |
2803 | { | |
83bac4b0 NC |
2804 | sreloc = _bfd_elf_make_dynamic_reloc_section |
2805 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
252b5132 | 2806 | |
252b5132 | 2807 | if (sreloc == NULL) |
83bac4b0 | 2808 | return FALSE; |
252b5132 RH |
2809 | } |
2810 | ||
3e829b4a AS |
2811 | if (sec->flags & SEC_READONLY |
2812 | /* Don't set DF_TEXTREL yet for PC relative | |
2813 | relocations, they might be discarded later. */ | |
2814 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
2815 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2816 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
2817 | info->flags |= DF_TEXTREL; | |
2818 | ||
eea6121a | 2819 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 2820 | |
b6152c34 AS |
2821 | /* We count the number of PC relative relocations we have |
2822 | entered for this symbol, so that we can discard them | |
2823 | again if, in the -Bsymbolic case, the symbol is later | |
2824 | defined by a regular object, or, in the normal shared | |
2825 | case, the symbol is forced to be local. Note that this | |
2826 | function is only called if we are using an m68kelf linker | |
2827 | hash table, which means that h is really a pointer to an | |
252b5132 | 2828 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
2829 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
2830 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2831 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 2832 | { |
252b5132 | 2833 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
2834 | struct elf_m68k_pcrel_relocs_copied **head; |
2835 | ||
2836 | if (h != NULL) | |
2837 | { | |
2838 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 2839 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
2840 | head = &eh->pcrel_relocs_copied; |
2841 | } | |
2842 | else | |
2843 | { | |
2844 | asection *s; | |
6edfbbad | 2845 | void *vpp; |
87d72d41 | 2846 | Elf_Internal_Sym *isym; |
6edfbbad | 2847 | |
87d72d41 AM |
2848 | isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache, |
2849 | abfd, r_symndx); | |
2850 | if (isym == NULL) | |
b6152c34 | 2851 | return FALSE; |
252b5132 | 2852 | |
87d72d41 AM |
2853 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2854 | if (s == NULL) | |
2855 | s = sec; | |
2856 | ||
6edfbbad DJ |
2857 | vpp = &elf_section_data (s)->local_dynrel; |
2858 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 2859 | } |
252b5132 | 2860 | |
b6152c34 | 2861 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
2862 | if (p->section == sreloc) |
2863 | break; | |
2864 | ||
2865 | if (p == NULL) | |
2866 | { | |
2867 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 2868 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 2869 | if (p == NULL) |
b34976b6 | 2870 | return FALSE; |
b6152c34 AS |
2871 | p->next = *head; |
2872 | *head = p; | |
252b5132 RH |
2873 | p->section = sreloc; |
2874 | p->count = 0; | |
2875 | } | |
2876 | ||
2877 | ++p->count; | |
2878 | } | |
2879 | } | |
2880 | ||
2881 | break; | |
2882 | ||
2883 | /* This relocation describes the C++ object vtable hierarchy. | |
2884 | Reconstruct it for later use during GC. */ | |
2885 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 2886 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2887 | return FALSE; |
252b5132 RH |
2888 | break; |
2889 | ||
2890 | /* This relocation describes which C++ vtable entries are actually | |
2891 | used. Record for later use during GC. */ | |
2892 | case R_68K_GNU_VTENTRY: | |
d17e0c6e JB |
2893 | BFD_ASSERT (h != NULL); |
2894 | if (h != NULL | |
2895 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 2896 | return FALSE; |
252b5132 RH |
2897 | break; |
2898 | ||
2899 | default: | |
2900 | break; | |
2901 | } | |
2902 | } | |
2903 | ||
b34976b6 | 2904 | return TRUE; |
252b5132 RH |
2905 | } |
2906 | ||
2907 | /* Return the section that should be marked against GC for a given | |
2908 | relocation. */ | |
2909 | ||
2910 | static asection * | |
07adf181 AM |
2911 | elf_m68k_gc_mark_hook (asection *sec, |
2912 | struct bfd_link_info *info, | |
2913 | Elf_Internal_Rela *rel, | |
2914 | struct elf_link_hash_entry *h, | |
2915 | Elf_Internal_Sym *sym) | |
252b5132 RH |
2916 | { |
2917 | if (h != NULL) | |
07adf181 AM |
2918 | switch (ELF32_R_TYPE (rel->r_info)) |
2919 | { | |
2920 | case R_68K_GNU_VTINHERIT: | |
2921 | case R_68K_GNU_VTENTRY: | |
2922 | return NULL; | |
2923 | } | |
2924 | ||
2925 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
2926 | } |
2927 | ||
2928 | /* Update the got entry reference counts for the section being removed. */ | |
2929 | ||
b34976b6 | 2930 | static bfd_boolean |
07adf181 AM |
2931 | elf_m68k_gc_sweep_hook (bfd *abfd, |
2932 | struct bfd_link_info *info, | |
2933 | asection *sec, | |
2934 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
2935 | { |
2936 | Elf_Internal_Shdr *symtab_hdr; | |
2937 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 | 2938 | const Elf_Internal_Rela *rel, *relend; |
252b5132 | 2939 | bfd *dynobj; |
7fb9f789 | 2940 | struct elf_m68k_got *got; |
252b5132 | 2941 | |
7dda2462 TG |
2942 | if (info->relocatable) |
2943 | return TRUE; | |
2944 | ||
252b5132 | 2945 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 2946 | if (dynobj == NULL) |
b34976b6 | 2947 | return TRUE; |
dd5724d5 | 2948 | |
4f075348 KH |
2949 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2950 | sym_hashes = elf_sym_hashes (abfd); | |
7fb9f789 | 2951 | got = NULL; |
252b5132 RH |
2952 | |
2953 | relend = relocs + sec->reloc_count; | |
2954 | for (rel = relocs; rel < relend; rel++) | |
2955 | { | |
4f075348 | 2956 | unsigned long r_symndx; |
3eb128b2 AM |
2957 | struct elf_link_hash_entry *h = NULL; |
2958 | ||
2959 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2960 | if (r_symndx >= symtab_hdr->sh_info) | |
2961 | { | |
2962 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2963 | while (h->root.type == bfd_link_hash_indirect | |
2964 | || h->root.type == bfd_link_hash_warning) | |
2965 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2966 | } | |
4f075348 | 2967 | |
252b5132 RH |
2968 | switch (ELF32_R_TYPE (rel->r_info)) |
2969 | { | |
2970 | case R_68K_GOT8: | |
2971 | case R_68K_GOT16: | |
2972 | case R_68K_GOT32: | |
7fb9f789 NC |
2973 | if (h != NULL |
2974 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2975 | break; | |
2976 | ||
2977 | /* FALLTHRU */ | |
252b5132 RH |
2978 | case R_68K_GOT8O: |
2979 | case R_68K_GOT16O: | |
2980 | case R_68K_GOT32O: | |
cf869cce NC |
2981 | /* Fall through. */ |
2982 | ||
2983 | /* TLS relocations. */ | |
2984 | case R_68K_TLS_GD8: | |
2985 | case R_68K_TLS_GD16: | |
2986 | case R_68K_TLS_GD32: | |
2987 | case R_68K_TLS_LDM8: | |
2988 | case R_68K_TLS_LDM16: | |
2989 | case R_68K_TLS_LDM32: | |
2990 | case R_68K_TLS_IE8: | |
2991 | case R_68K_TLS_IE16: | |
2992 | case R_68K_TLS_IE32: | |
2993 | ||
e5f2b1de NC |
2994 | case R_68K_TLS_TPREL32: |
2995 | case R_68K_TLS_DTPREL32: | |
2996 | ||
7fb9f789 | 2997 | if (got == NULL) |
252b5132 | 2998 | { |
7fb9f789 NC |
2999 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), |
3000 | abfd, MUST_FIND, NULL)->got; | |
3001 | BFD_ASSERT (got != NULL); | |
252b5132 | 3002 | } |
7fb9f789 NC |
3003 | |
3004 | { | |
3005 | struct elf_m68k_got_entry_key key_; | |
3006 | struct elf_m68k_got_entry **got_entry_ptr; | |
3007 | struct elf_m68k_got_entry *got_entry; | |
3008 | ||
cf869cce NC |
3009 | elf_m68k_init_got_entry_key (&key_, h, abfd, r_symndx, |
3010 | ELF32_R_TYPE (rel->r_info)); | |
7fb9f789 NC |
3011 | got_entry_ptr = elf_m68k_find_got_entry_ptr (got, &key_); |
3012 | ||
3013 | got_entry = *got_entry_ptr; | |
3014 | ||
3015 | if (got_entry->u.s1.refcount > 0) | |
3016 | { | |
3017 | --got_entry->u.s1.refcount; | |
3018 | ||
3019 | if (got_entry->u.s1.refcount == 0) | |
3020 | /* We don't need the .got entry any more. */ | |
3021 | elf_m68k_remove_got_entry (got, got_entry_ptr); | |
3022 | } | |
3023 | } | |
252b5132 RH |
3024 | break; |
3025 | ||
3026 | case R_68K_PLT8: | |
3027 | case R_68K_PLT16: | |
3028 | case R_68K_PLT32: | |
3029 | case R_68K_PLT8O: | |
3030 | case R_68K_PLT16O: | |
3031 | case R_68K_PLT32O: | |
3032 | case R_68K_PC8: | |
3033 | case R_68K_PC16: | |
3034 | case R_68K_PC32: | |
3035 | case R_68K_8: | |
3036 | case R_68K_16: | |
3037 | case R_68K_32: | |
3eb128b2 | 3038 | if (h != NULL) |
252b5132 | 3039 | { |
252b5132 RH |
3040 | if (h->plt.refcount > 0) |
3041 | --h->plt.refcount; | |
3042 | } | |
3043 | break; | |
3044 | ||
3045 | default: | |
3046 | break; | |
3047 | } | |
3048 | } | |
3049 | ||
b34976b6 | 3050 | return TRUE; |
252b5132 | 3051 | } |
cc3e26be RS |
3052 | \f |
3053 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
3054 | ||
3055 | static const struct elf_m68k_plt_info * | |
3056 | elf_m68k_get_plt_info (bfd *output_bfd) | |
3057 | { | |
3058 | unsigned int features; | |
3059 | ||
3060 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
3061 | if (features & cpu32) | |
3062 | return &elf_cpu32_plt_info; | |
3063 | if (features & mcfisa_b) | |
3064 | return &elf_isab_plt_info; | |
9a2e615a NS |
3065 | if (features & mcfisa_c) |
3066 | return &elf_isac_plt_info; | |
cc3e26be RS |
3067 | return &elf_m68k_plt_info; |
3068 | } | |
3069 | ||
3070 | /* This function is called after all the input files have been read, | |
3071 | and the input sections have been assigned to output sections. | |
3072 | It's a convenient place to determine the PLT style. */ | |
3073 | ||
3074 | static bfd_boolean | |
3075 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
3076 | { | |
7fb9f789 NC |
3077 | /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got |
3078 | sections. */ | |
3079 | if (!elf_m68k_partition_multi_got (info)) | |
3080 | return FALSE; | |
3081 | ||
cc3e26be RS |
3082 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); |
3083 | return TRUE; | |
3084 | } | |
252b5132 | 3085 | |
252b5132 RH |
3086 | /* Adjust a symbol defined by a dynamic object and referenced by a |
3087 | regular object. The current definition is in some section of the | |
3088 | dynamic object, but we're not including those sections. We have to | |
3089 | change the definition to something the rest of the link can | |
3090 | understand. */ | |
3091 | ||
b34976b6 | 3092 | static bfd_boolean |
2c3fc389 NC |
3093 | elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info, |
3094 | struct elf_link_hash_entry *h) | |
252b5132 | 3095 | { |
cc3e26be | 3096 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
3097 | bfd *dynobj; |
3098 | asection *s; | |
252b5132 | 3099 | |
cc3e26be | 3100 | htab = elf_m68k_hash_table (info); |
252b5132 RH |
3101 | dynobj = elf_hash_table (info)->dynobj; |
3102 | ||
3103 | /* Make sure we know what is going on here. */ | |
3104 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 3105 | && (h->needs_plt |
f6e332e6 | 3106 | || h->u.weakdef != NULL |
f5385ebf AM |
3107 | || (h->def_dynamic |
3108 | && h->ref_regular | |
3109 | && !h->def_regular))); | |
252b5132 RH |
3110 | |
3111 | /* If this is a function, put it in the procedure linkage table. We | |
3112 | will fill in the contents of the procedure linkage table later, | |
3113 | when we know the address of the .got section. */ | |
3114 | if (h->type == STT_FUNC | |
f5385ebf | 3115 | || h->needs_plt) |
252b5132 | 3116 | { |
9dfe8738 AS |
3117 | if ((h->plt.refcount <= 0 |
3118 | || SYMBOL_CALLS_LOCAL (info, h) | |
3119 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3120 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3121 | /* We must always create the plt entry if it was referenced |
3122 | by a PLTxxO relocation. In this case we already recorded | |
3123 | it as a dynamic symbol. */ | |
3124 | && h->dynindx == -1) | |
3125 | { | |
3126 | /* This case can occur if we saw a PLTxx reloc in an input | |
3127 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
3128 | object, or if all references were garbage collected. In |
3129 | such a case, we don't actually need to build a procedure | |
3130 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 3131 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 3132 | h->needs_plt = 0; |
b34976b6 | 3133 | return TRUE; |
252b5132 RH |
3134 | } |
3135 | ||
3136 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 3137 | if (h->dynindx == -1 |
f5385ebf | 3138 | && !h->forced_local) |
252b5132 | 3139 | { |
c152c796 | 3140 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3141 | return FALSE; |
252b5132 RH |
3142 | } |
3143 | ||
3d4d4302 | 3144 | s = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
3145 | BFD_ASSERT (s != NULL); |
3146 | ||
3147 | /* If this is the first .plt entry, make room for the special | |
3148 | first entry. */ | |
eea6121a | 3149 | if (s->size == 0) |
cc3e26be | 3150 | s->size = htab->plt_info->size; |
252b5132 RH |
3151 | |
3152 | /* If this symbol is not defined in a regular file, and we are | |
3153 | not generating a shared library, then set the symbol to this | |
3154 | location in the .plt. This is required to make function | |
3155 | pointers compare as equal between the normal executable and | |
3156 | the shared library. */ | |
3157 | if (!info->shared | |
f5385ebf | 3158 | && !h->def_regular) |
252b5132 RH |
3159 | { |
3160 | h->root.u.def.section = s; | |
eea6121a | 3161 | h->root.u.def.value = s->size; |
252b5132 RH |
3162 | } |
3163 | ||
eea6121a | 3164 | h->plt.offset = s->size; |
252b5132 RH |
3165 | |
3166 | /* Make room for this entry. */ | |
cc3e26be | 3167 | s->size += htab->plt_info->size; |
252b5132 RH |
3168 | |
3169 | /* We also need to make an entry in the .got.plt section, which | |
3170 | will be placed in the .got section by the linker script. */ | |
3d4d4302 | 3171 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
252b5132 | 3172 | BFD_ASSERT (s != NULL); |
eea6121a | 3173 | s->size += 4; |
252b5132 RH |
3174 | |
3175 | /* We also need to make an entry in the .rela.plt section. */ | |
3d4d4302 | 3176 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
252b5132 | 3177 | BFD_ASSERT (s != NULL); |
eea6121a | 3178 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 3179 | |
b34976b6 | 3180 | return TRUE; |
252b5132 RH |
3181 | } |
3182 | ||
3183 | /* Reinitialize the plt offset now that it is not used as a reference | |
3184 | count any more. */ | |
3185 | h->plt.offset = (bfd_vma) -1; | |
3186 | ||
3187 | /* If this is a weak symbol, and there is a real definition, the | |
3188 | processor independent code will have arranged for us to see the | |
3189 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 3190 | if (h->u.weakdef != NULL) |
252b5132 | 3191 | { |
f6e332e6 AM |
3192 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3193 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3194 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3195 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 3196 | return TRUE; |
252b5132 RH |
3197 | } |
3198 | ||
3199 | /* This is a reference to a symbol defined by a dynamic object which | |
3200 | is not a function. */ | |
3201 | ||
3202 | /* If we are creating a shared library, we must presume that the | |
3203 | only references to the symbol are via the global offset table. | |
3204 | For such cases we need not do anything here; the relocations will | |
3205 | be handled correctly by relocate_section. */ | |
3206 | if (info->shared) | |
b34976b6 | 3207 | return TRUE; |
252b5132 | 3208 | |
e5f2b1de NC |
3209 | /* If there are no references to this symbol that do not use the |
3210 | GOT, we don't need to generate a copy reloc. */ | |
3211 | if (!h->non_got_ref) | |
3212 | return TRUE; | |
3213 | ||
252b5132 RH |
3214 | /* We must allocate the symbol in our .dynbss section, which will |
3215 | become part of the .bss section of the executable. There will be | |
3216 | an entry for this symbol in the .dynsym section. The dynamic | |
3217 | object will contain position independent code, so all references | |
3218 | from the dynamic object to this symbol will go through the global | |
3219 | offset table. The dynamic linker will use the .dynsym entry to | |
3220 | determine the address it must put in the global offset table, so | |
3221 | both the dynamic object and the regular object will refer to the | |
3222 | same memory location for the variable. */ | |
3223 | ||
3d4d4302 | 3224 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
252b5132 RH |
3225 | BFD_ASSERT (s != NULL); |
3226 | ||
3227 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
3228 | copy the initial value out of the dynamic object and into the | |
3229 | runtime process image. We need to remember the offset into the | |
3230 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 3231 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 RH |
3232 | { |
3233 | asection *srel; | |
3234 | ||
3d4d4302 | 3235 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 | 3236 | BFD_ASSERT (srel != NULL); |
eea6121a | 3237 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3238 | h->needs_copy = 1; |
252b5132 RH |
3239 | } |
3240 | ||
027297b7 | 3241 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
3242 | } |
3243 | ||
3244 | /* Set the sizes of the dynamic sections. */ | |
3245 | ||
b34976b6 | 3246 | static bfd_boolean |
2c3fc389 NC |
3247 | elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3248 | struct bfd_link_info *info) | |
252b5132 RH |
3249 | { |
3250 | bfd *dynobj; | |
3251 | asection *s; | |
b34976b6 AM |
3252 | bfd_boolean plt; |
3253 | bfd_boolean relocs; | |
252b5132 RH |
3254 | |
3255 | dynobj = elf_hash_table (info)->dynobj; | |
3256 | BFD_ASSERT (dynobj != NULL); | |
3257 | ||
3258 | if (elf_hash_table (info)->dynamic_sections_created) | |
3259 | { | |
3260 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 3261 | if (info->executable) |
252b5132 | 3262 | { |
3d4d4302 | 3263 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 3264 | BFD_ASSERT (s != NULL); |
eea6121a | 3265 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
3266 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3267 | } | |
3268 | } | |
3269 | else | |
3270 | { | |
3271 | /* We may have created entries in the .rela.got section. | |
3272 | However, if we are not creating the dynamic sections, we will | |
3273 | not actually use these entries. Reset the size of .rela.got, | |
3274 | which will cause it to get stripped from the output file | |
3275 | below. */ | |
3d4d4302 | 3276 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
252b5132 | 3277 | if (s != NULL) |
eea6121a | 3278 | s->size = 0; |
252b5132 RH |
3279 | } |
3280 | ||
b6152c34 AS |
3281 | /* If this is a -Bsymbolic shared link, then we need to discard all |
3282 | PC relative relocs against symbols defined in a regular object. | |
3283 | For the normal shared case we discard the PC relative relocs | |
3284 | against symbols that have become local due to visibility changes. | |
3285 | We allocated space for them in the check_relocs routine, but we | |
3286 | will not fill them in in the relocate_section routine. */ | |
3287 | if (info->shared) | |
0cca5f05 AS |
3288 | elf_link_hash_traverse (elf_hash_table (info), |
3289 | elf_m68k_discard_copies, | |
2c3fc389 | 3290 | info); |
252b5132 RH |
3291 | |
3292 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3293 | determined the sizes of the various dynamic sections. Allocate | |
3294 | memory for them. */ | |
b34976b6 AM |
3295 | plt = FALSE; |
3296 | relocs = FALSE; | |
252b5132 RH |
3297 | for (s = dynobj->sections; s != NULL; s = s->next) |
3298 | { | |
3299 | const char *name; | |
252b5132 RH |
3300 | |
3301 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3302 | continue; | |
3303 | ||
3304 | /* It's OK to base decisions on the section name, because none | |
3305 | of the dynobj section names depend upon the input files. */ | |
3306 | name = bfd_get_section_name (dynobj, s); | |
3307 | ||
252b5132 RH |
3308 | if (strcmp (name, ".plt") == 0) |
3309 | { | |
c456f082 AM |
3310 | /* Remember whether there is a PLT. */ |
3311 | plt = s->size != 0; | |
252b5132 | 3312 | } |
0112cd26 | 3313 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 3314 | { |
c456f082 | 3315 | if (s->size != 0) |
252b5132 | 3316 | { |
b34976b6 | 3317 | relocs = TRUE; |
252b5132 RH |
3318 | |
3319 | /* We use the reloc_count field as a counter if we need | |
3320 | to copy relocs into the output file. */ | |
3321 | s->reloc_count = 0; | |
3322 | } | |
3323 | } | |
0112cd26 | 3324 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3325 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
3326 | { |
3327 | /* It's not one of our sections, so don't allocate space. */ | |
3328 | continue; | |
3329 | } | |
3330 | ||
c456f082 | 3331 | if (s->size == 0) |
252b5132 | 3332 | { |
c456f082 AM |
3333 | /* If we don't need this section, strip it from the |
3334 | output file. This is mostly to handle .rela.bss and | |
3335 | .rela.plt. We must create both sections in | |
3336 | create_dynamic_sections, because they must be created | |
3337 | before the linker maps input sections to output | |
3338 | sections. The linker does that before | |
3339 | adjust_dynamic_symbol is called, and it is that | |
3340 | function which decides whether anything needs to go | |
3341 | into these sections. */ | |
8423293d | 3342 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
3343 | continue; |
3344 | } | |
3345 | ||
c456f082 AM |
3346 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3347 | continue; | |
3348 | ||
252b5132 | 3349 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
3350 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
3351 | Unused entries should be reclaimed before the section's contents | |
3352 | are written out, but at the moment this does not happen. Thus in | |
3353 | order to prevent writing out garbage, we initialise the section's | |
3354 | contents to zero. */ | |
eea6121a | 3355 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3356 | if (s->contents == NULL) |
b34976b6 | 3357 | return FALSE; |
252b5132 RH |
3358 | } |
3359 | ||
3360 | if (elf_hash_table (info)->dynamic_sections_created) | |
3361 | { | |
3362 | /* Add some entries to the .dynamic section. We fill in the | |
3363 | values later, in elf_m68k_finish_dynamic_sections, but we | |
3364 | must add the entries now so that we get the correct size for | |
3365 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3366 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3367 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3368 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3369 | |
5bb7df2e | 3370 | if (info->executable) |
252b5132 | 3371 | { |
dc810e39 | 3372 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3373 | return FALSE; |
252b5132 RH |
3374 | } |
3375 | ||
3376 | if (plt) | |
3377 | { | |
dc810e39 AM |
3378 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3379 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3380 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3381 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3382 | return FALSE; |
252b5132 RH |
3383 | } |
3384 | ||
3385 | if (relocs) | |
3386 | { | |
dc810e39 AM |
3387 | if (!add_dynamic_entry (DT_RELA, 0) |
3388 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3389 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3390 | return FALSE; |
252b5132 RH |
3391 | } |
3392 | ||
aa91b392 | 3393 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 3394 | { |
dc810e39 | 3395 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3396 | return FALSE; |
252b5132 RH |
3397 | } |
3398 | } | |
dc810e39 | 3399 | #undef add_dynamic_entry |
252b5132 | 3400 | |
b34976b6 | 3401 | return TRUE; |
252b5132 RH |
3402 | } |
3403 | ||
0cca5f05 | 3404 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
3405 | creating a shared object. In the -Bsymbolic case it discards the |
3406 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 3407 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
3408 | discards space for pc-relative relocs that have become local due to |
3409 | symbol visibility changes. We allocated space for them in the | |
3410 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
3411 | relocate_section routine. |
3412 | ||
3413 | We also check whether any of the remaining relocations apply | |
3414 | against a readonly section, and set the DF_TEXTREL flag in this | |
3415 | case. */ | |
252b5132 | 3416 | |
b34976b6 | 3417 | static bfd_boolean |
2c3fc389 NC |
3418 | elf_m68k_discard_copies (struct elf_link_hash_entry *h, |
3419 | void * inf) | |
252b5132 | 3420 | { |
b6152c34 | 3421 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
3422 | struct elf_m68k_pcrel_relocs_copied *s; |
3423 | ||
2516a1ee | 3424 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
3e829b4a AS |
3425 | { |
3426 | if ((info->flags & DF_TEXTREL) == 0) | |
3427 | { | |
3428 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
3429 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3430 | s != NULL; | |
3431 | s = s->next) | |
3e829b4a AS |
3432 | if ((s->section->flags & SEC_READONLY) != 0) |
3433 | { | |
3434 | info->flags |= DF_TEXTREL; | |
3435 | break; | |
3436 | } | |
3437 | } | |
0cca5f05 | 3438 | |
cab0ad83 AS |
3439 | /* Make sure undefined weak symbols are output as a dynamic symbol |
3440 | in PIEs. */ | |
3441 | if (h->non_got_ref | |
3442 | && h->root.type == bfd_link_hash_undefweak | |
3443 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3444 | && h->dynindx == -1 | |
3445 | && !h->forced_local) | |
3446 | { | |
3447 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3448 | return FALSE; | |
3449 | } | |
3450 | ||
3e829b4a AS |
3451 | return TRUE; |
3452 | } | |
252b5132 | 3453 | |
0cca5f05 AS |
3454 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3455 | s != NULL; | |
3456 | s = s->next) | |
eea6121a | 3457 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 3458 | |
b34976b6 | 3459 | return TRUE; |
252b5132 RH |
3460 | } |
3461 | ||
cf869cce NC |
3462 | |
3463 | /* Install relocation RELA. */ | |
3464 | ||
3465 | static void | |
3466 | elf_m68k_install_rela (bfd *output_bfd, | |
3467 | asection *srela, | |
3468 | Elf_Internal_Rela *rela) | |
3469 | { | |
3470 | bfd_byte *loc; | |
3471 | ||
3472 | loc = srela->contents; | |
3473 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
3474 | bfd_elf32_swap_reloca_out (output_bfd, rela, loc); | |
3475 | } | |
3476 | ||
325e58c7 NC |
3477 | /* Find the base offsets for thread-local storage in this object, |
3478 | for GD/LD and IE/LE respectively. */ | |
3479 | ||
3480 | #define DTP_OFFSET 0x8000 | |
3481 | #define TP_OFFSET 0x7000 | |
cf869cce NC |
3482 | |
3483 | static bfd_vma | |
3484 | dtpoff_base (struct bfd_link_info *info) | |
3485 | { | |
3486 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3487 | if (elf_hash_table (info)->tls_sec == NULL) | |
3488 | return 0; | |
325e58c7 | 3489 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; |
cf869cce NC |
3490 | } |
3491 | ||
cf869cce | 3492 | static bfd_vma |
325e58c7 | 3493 | tpoff_base (struct bfd_link_info *info) |
cf869cce | 3494 | { |
cf869cce | 3495 | /* If tls_sec is NULL, we should have signalled an error already. */ |
325e58c7 | 3496 | if (elf_hash_table (info)->tls_sec == NULL) |
cf869cce | 3497 | return 0; |
325e58c7 NC |
3498 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; |
3499 | } | |
3500 | ||
3501 | /* Output necessary relocation to handle a symbol during static link. | |
3502 | This function is called from elf_m68k_relocate_section. */ | |
3503 | ||
3504 | static void | |
3505 | elf_m68k_init_got_entry_static (struct bfd_link_info *info, | |
3506 | bfd *output_bfd, | |
3507 | enum elf_m68k_reloc_type r_type, | |
3508 | asection *sgot, | |
3509 | bfd_vma got_entry_offset, | |
3510 | bfd_vma relocation) | |
3511 | { | |
3512 | switch (elf_m68k_reloc_got_type (r_type)) | |
3513 | { | |
3514 | case R_68K_GOT32O: | |
3515 | bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset); | |
3516 | break; | |
3517 | ||
3518 | case R_68K_TLS_GD32: | |
3519 | /* We know the offset within the module, | |
3520 | put it into the second GOT slot. */ | |
3521 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3522 | sgot->contents + got_entry_offset + 4); | |
3523 | /* FALLTHRU */ | |
3524 | ||
3525 | case R_68K_TLS_LDM32: | |
3526 | /* Mark it as belonging to module 1, the executable. */ | |
3527 | bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset); | |
3528 | break; | |
3529 | ||
3530 | case R_68K_TLS_IE32: | |
3531 | bfd_put_32 (output_bfd, relocation - tpoff_base (info), | |
3532 | sgot->contents + got_entry_offset); | |
3533 | break; | |
3534 | ||
3535 | default: | |
3536 | BFD_ASSERT (FALSE); | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | /* Output necessary relocation to handle a local symbol | |
3541 | during dynamic link. | |
3542 | This function is called either from elf_m68k_relocate_section | |
3543 | or from elf_m68k_finish_dynamic_symbol. */ | |
3544 | ||
3545 | static void | |
3546 | elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info, | |
3547 | bfd *output_bfd, | |
3548 | enum elf_m68k_reloc_type r_type, | |
3549 | asection *sgot, | |
3550 | bfd_vma got_entry_offset, | |
3551 | bfd_vma relocation, | |
3552 | asection *srela) | |
3553 | { | |
3554 | Elf_Internal_Rela outrel; | |
3555 | ||
3556 | switch (elf_m68k_reloc_got_type (r_type)) | |
3557 | { | |
3558 | case R_68K_GOT32O: | |
3559 | /* Emit RELATIVE relocation to initialize GOT slot | |
3560 | at run-time. */ | |
3561 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
3562 | outrel.r_addend = relocation; | |
3563 | break; | |
3564 | ||
3565 | case R_68K_TLS_GD32: | |
3566 | /* We know the offset within the module, | |
3567 | put it into the second GOT slot. */ | |
3568 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3569 | sgot->contents + got_entry_offset + 4); | |
3570 | /* FALLTHRU */ | |
3571 | ||
3572 | case R_68K_TLS_LDM32: | |
3573 | /* We don't know the module number, | |
3574 | create a relocation for it. */ | |
3575 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32); | |
3576 | outrel.r_addend = 0; | |
3577 | break; | |
3578 | ||
3579 | case R_68K_TLS_IE32: | |
3580 | /* Emit TPREL relocation to initialize GOT slot | |
3581 | at run-time. */ | |
3582 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32); | |
3583 | outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma; | |
3584 | break; | |
3585 | ||
3586 | default: | |
3587 | BFD_ASSERT (FALSE); | |
3588 | } | |
3589 | ||
3590 | /* Offset of the GOT entry. */ | |
3591 | outrel.r_offset = (sgot->output_section->vma | |
3592 | + sgot->output_offset | |
3593 | + got_entry_offset); | |
3594 | ||
3595 | /* Install one of the above relocations. */ | |
3596 | elf_m68k_install_rela (output_bfd, srela, &outrel); | |
3597 | ||
3598 | bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset); | |
cf869cce NC |
3599 | } |
3600 | ||
252b5132 RH |
3601 | /* Relocate an M68K ELF section. */ |
3602 | ||
b34976b6 | 3603 | static bfd_boolean |
2c3fc389 NC |
3604 | elf_m68k_relocate_section (bfd *output_bfd, |
3605 | struct bfd_link_info *info, | |
3606 | bfd *input_bfd, | |
3607 | asection *input_section, | |
3608 | bfd_byte *contents, | |
3609 | Elf_Internal_Rela *relocs, | |
3610 | Elf_Internal_Sym *local_syms, | |
3611 | asection **local_sections) | |
252b5132 RH |
3612 | { |
3613 | bfd *dynobj; | |
3614 | Elf_Internal_Shdr *symtab_hdr; | |
3615 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
3616 | asection *sgot; |
3617 | asection *splt; | |
3618 | asection *sreloc; | |
325e58c7 | 3619 | asection *srela; |
7fb9f789 | 3620 | struct elf_m68k_got *got; |
252b5132 RH |
3621 | Elf_Internal_Rela *rel; |
3622 | Elf_Internal_Rela *relend; | |
3623 | ||
3624 | dynobj = elf_hash_table (info)->dynobj; | |
3625 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3626 | sym_hashes = elf_sym_hashes (input_bfd); | |
252b5132 RH |
3627 | |
3628 | sgot = NULL; | |
3629 | splt = NULL; | |
3630 | sreloc = NULL; | |
325e58c7 | 3631 | srela = NULL; |
252b5132 | 3632 | |
7fb9f789 NC |
3633 | got = NULL; |
3634 | ||
252b5132 RH |
3635 | rel = relocs; |
3636 | relend = relocs + input_section->reloc_count; | |
3637 | for (; rel < relend; rel++) | |
3638 | { | |
3639 | int r_type; | |
3640 | reloc_howto_type *howto; | |
3641 | unsigned long r_symndx; | |
3642 | struct elf_link_hash_entry *h; | |
3643 | Elf_Internal_Sym *sym; | |
3644 | asection *sec; | |
3645 | bfd_vma relocation; | |
44f745a6 | 3646 | bfd_boolean unresolved_reloc; |
252b5132 RH |
3647 | bfd_reloc_status_type r; |
3648 | ||
3649 | r_type = ELF32_R_TYPE (rel->r_info); | |
3650 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
3651 | { | |
3652 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3653 | return FALSE; |
252b5132 RH |
3654 | } |
3655 | howto = howto_table + r_type; | |
3656 | ||
3657 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3658 | ||
252b5132 RH |
3659 | h = NULL; |
3660 | sym = NULL; | |
3661 | sec = NULL; | |
44f745a6 | 3662 | unresolved_reloc = FALSE; |
560e09e9 | 3663 | |
252b5132 RH |
3664 | if (r_symndx < symtab_hdr->sh_info) |
3665 | { | |
3666 | sym = local_syms + r_symndx; | |
3667 | sec = local_sections[r_symndx]; | |
8517fae7 | 3668 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
3669 | } |
3670 | else | |
3671 | { | |
62d887d4 | 3672 | bfd_boolean warned, ignored; |
560e09e9 | 3673 | |
b2a8e766 AM |
3674 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3675 | r_symndx, symtab_hdr, sym_hashes, | |
3676 | h, sec, relocation, | |
62d887d4 | 3677 | unresolved_reloc, warned, ignored); |
252b5132 RH |
3678 | } |
3679 | ||
dbaa2011 | 3680 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 3681 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3682 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
3683 | |
3684 | if (info->relocatable) | |
3685 | continue; | |
3686 | ||
252b5132 RH |
3687 | switch (r_type) |
3688 | { | |
3689 | case R_68K_GOT8: | |
3690 | case R_68K_GOT16: | |
3691 | case R_68K_GOT32: | |
3692 | /* Relocation is to the address of the entry for this symbol | |
3693 | in the global offset table. */ | |
3694 | if (h != NULL | |
3695 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7fb9f789 | 3696 | { |
7fb9f789 NC |
3697 | if (elf_m68k_hash_table (info)->local_gp_p) |
3698 | { | |
3699 | bfd_vma sgot_output_offset; | |
3700 | bfd_vma got_offset; | |
3701 | ||
3702 | if (sgot == NULL) | |
3703 | { | |
3d4d4302 | 3704 | sgot = bfd_get_linker_section (dynobj, ".got"); |
7fb9f789 NC |
3705 | |
3706 | if (sgot != NULL) | |
3707 | sgot_output_offset = sgot->output_offset; | |
3708 | else | |
3709 | /* In this case we have a reference to | |
3710 | _GLOBAL_OFFSET_TABLE_, but the GOT itself is | |
3711 | empty. | |
3712 | ??? Issue a warning? */ | |
3713 | sgot_output_offset = 0; | |
3714 | } | |
3715 | else | |
3716 | sgot_output_offset = sgot->output_offset; | |
3717 | ||
3718 | if (got == NULL) | |
3719 | { | |
3720 | struct elf_m68k_bfd2got_entry *bfd2got_entry; | |
3721 | ||
3722 | bfd2got_entry | |
3723 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3724 | input_bfd, SEARCH, NULL); | |
3725 | ||
3726 | if (bfd2got_entry != NULL) | |
3727 | { | |
3728 | got = bfd2got_entry->got; | |
3729 | BFD_ASSERT (got != NULL); | |
3730 | ||
3731 | got_offset = got->offset; | |
3732 | } | |
3733 | else | |
3734 | /* In this case we have a reference to | |
3735 | _GLOBAL_OFFSET_TABLE_, but no other references | |
3736 | accessing any GOT entries. | |
3737 | ??? Issue a warning? */ | |
3738 | got_offset = 0; | |
3739 | } | |
3740 | else | |
3741 | got_offset = got->offset; | |
3742 | ||
3743 | /* Adjust GOT pointer to point to the GOT | |
3744 | assigned to input_bfd. */ | |
f57718b4 | 3745 | rel->r_addend += sgot_output_offset + got_offset; |
7fb9f789 NC |
3746 | } |
3747 | else | |
3748 | BFD_ASSERT (got == NULL || got->offset == 0); | |
3749 | ||
3750 | break; | |
3751 | } | |
252b5132 RH |
3752 | /* Fall through. */ |
3753 | case R_68K_GOT8O: | |
3754 | case R_68K_GOT16O: | |
3755 | case R_68K_GOT32O: | |
cf869cce NC |
3756 | |
3757 | case R_68K_TLS_LDM32: | |
3758 | case R_68K_TLS_LDM16: | |
3759 | case R_68K_TLS_LDM8: | |
3760 | ||
3761 | case R_68K_TLS_GD8: | |
3762 | case R_68K_TLS_GD16: | |
3763 | case R_68K_TLS_GD32: | |
3764 | ||
3765 | case R_68K_TLS_IE8: | |
3766 | case R_68K_TLS_IE16: | |
3767 | case R_68K_TLS_IE32: | |
3768 | ||
252b5132 RH |
3769 | /* Relocation is the offset of the entry for this symbol in |
3770 | the global offset table. */ | |
3771 | ||
3772 | { | |
7fb9f789 NC |
3773 | struct elf_m68k_got_entry_key key_; |
3774 | bfd_vma *off_ptr; | |
252b5132 RH |
3775 | bfd_vma off; |
3776 | ||
3777 | if (sgot == NULL) | |
3778 | { | |
3d4d4302 | 3779 | sgot = bfd_get_linker_section (dynobj, ".got"); |
252b5132 RH |
3780 | BFD_ASSERT (sgot != NULL); |
3781 | } | |
3782 | ||
7fb9f789 NC |
3783 | if (got == NULL) |
3784 | { | |
3785 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3786 | input_bfd, MUST_FIND, | |
3787 | NULL)->got; | |
3788 | BFD_ASSERT (got != NULL); | |
3789 | } | |
3790 | ||
3791 | /* Get GOT offset for this symbol. */ | |
cf869cce NC |
3792 | elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx, |
3793 | r_type); | |
7fb9f789 NC |
3794 | off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND, |
3795 | NULL)->u.s2.offset; | |
3796 | off = *off_ptr; | |
3797 | ||
cf869cce NC |
3798 | /* The offset must always be a multiple of 4. We use |
3799 | the least significant bit to record whether we have | |
3800 | already generated the necessary reloc. */ | |
3801 | if ((off & 1) != 0) | |
3802 | off &= ~1; | |
3803 | else | |
252b5132 | 3804 | { |
cf869cce NC |
3805 | if (h != NULL |
3806 | /* @TLSLDM relocations are bounded to the module, in | |
3807 | which the symbol is defined -- not to the symbol | |
3808 | itself. */ | |
3809 | && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32) | |
252b5132 | 3810 | { |
cf869cce NC |
3811 | bfd_boolean dyn; |
3812 | ||
3813 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
3814 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3815 | || (info->shared | |
3816 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3817 | || (ELF_ST_VISIBILITY (h->other) | |
3818 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 3819 | { |
cf869cce NC |
3820 | /* This is actually a static link, or it is a |
3821 | -Bsymbolic link and the symbol is defined | |
3822 | locally, or the symbol was forced to be local | |
325e58c7 | 3823 | because of a version file. We must initialize |
cf869cce NC |
3824 | this entry in the global offset table. Since |
3825 | the offset must always be a multiple of 4, we | |
3826 | use the least significant bit to record whether | |
3827 | we have initialized it already. | |
3828 | ||
3829 | When doing a dynamic link, we create a .rela.got | |
3830 | relocation entry to initialize the value. This | |
3831 | is done in the finish_dynamic_symbol routine. */ | |
3832 | ||
325e58c7 NC |
3833 | elf_m68k_init_got_entry_static (info, |
3834 | output_bfd, | |
3835 | r_type, | |
3836 | sgot, | |
3837 | off, | |
3838 | relocation); | |
cf869cce | 3839 | |
7fb9f789 | 3840 | *off_ptr |= 1; |
252b5132 | 3841 | } |
cf869cce NC |
3842 | else |
3843 | unresolved_reloc = FALSE; | |
252b5132 | 3844 | } |
cf869cce | 3845 | else if (info->shared) /* && h == NULL */ |
325e58c7 | 3846 | /* Process local symbol during dynamic link. */ |
252b5132 | 3847 | { |
325e58c7 | 3848 | if (srela == NULL) |
252b5132 | 3849 | { |
3d4d4302 | 3850 | srela = bfd_get_linker_section (dynobj, ".rela.got"); |
325e58c7 | 3851 | BFD_ASSERT (srela != NULL); |
cf869cce | 3852 | } |
cf869cce | 3853 | |
325e58c7 NC |
3854 | elf_m68k_init_got_entry_local_shared (info, |
3855 | output_bfd, | |
3856 | r_type, | |
3857 | sgot, | |
3858 | off, | |
3859 | relocation, | |
3860 | srela); | |
cf869cce NC |
3861 | |
3862 | *off_ptr |= 1; | |
3863 | } | |
3864 | else /* h == NULL && !info->shared */ | |
3865 | { | |
325e58c7 NC |
3866 | elf_m68k_init_got_entry_static (info, |
3867 | output_bfd, | |
3868 | r_type, | |
3869 | sgot, | |
3870 | off, | |
3871 | relocation); | |
252b5132 | 3872 | |
7fb9f789 | 3873 | *off_ptr |= 1; |
252b5132 RH |
3874 | } |
3875 | } | |
3876 | ||
cf869cce NC |
3877 | /* We don't use elf_m68k_reloc_got_type in the condition below |
3878 | because this is the only place where difference between | |
3879 | R_68K_GOTx and R_68K_GOTxO relocations matters. */ | |
3880 | if (r_type == R_68K_GOT32O | |
252b5132 | 3881 | || r_type == R_68K_GOT16O |
cf869cce NC |
3882 | || r_type == R_68K_GOT8O |
3883 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32 | |
3884 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32 | |
3885 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32) | |
252b5132 | 3886 | { |
7fb9f789 NC |
3887 | /* GOT pointer is adjusted to point to the start/middle |
3888 | of local GOT. Adjust the offset accordingly. */ | |
3889 | BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p | |
3890 | || off >= got->offset); | |
3891 | ||
3892 | if (elf_m68k_hash_table (info)->local_gp_p) | |
3893 | relocation = off - got->offset; | |
3894 | else | |
3895 | { | |
3896 | BFD_ASSERT (got->offset == 0); | |
3897 | relocation = sgot->output_offset + off; | |
3898 | } | |
3899 | ||
252b5132 RH |
3900 | /* This relocation does not use the addend. */ |
3901 | rel->r_addend = 0; | |
3902 | } | |
3903 | else | |
7fb9f789 NC |
3904 | relocation = (sgot->output_section->vma + sgot->output_offset |
3905 | + off); | |
252b5132 RH |
3906 | } |
3907 | break; | |
3908 | ||
cf869cce NC |
3909 | case R_68K_TLS_LDO32: |
3910 | case R_68K_TLS_LDO16: | |
3911 | case R_68K_TLS_LDO8: | |
3912 | relocation -= dtpoff_base (info); | |
3913 | break; | |
3914 | ||
3915 | case R_68K_TLS_LE32: | |
3916 | case R_68K_TLS_LE16: | |
3917 | case R_68K_TLS_LE8: | |
3a4ae681 | 3918 | if (info->shared && !info->pie) |
cf869cce NC |
3919 | { |
3920 | (*_bfd_error_handler) | |
3921 | (_("%B(%A+0x%lx): R_68K_TLS_LE32 relocation not permitted " | |
3922 | "in shared object"), | |
3923 | input_bfd, input_section, (long) rel->r_offset, howto->name); | |
3924 | ||
3925 | return FALSE; | |
3926 | } | |
3927 | else | |
325e58c7 | 3928 | relocation -= tpoff_base (info); |
cf869cce NC |
3929 | |
3930 | break; | |
3931 | ||
252b5132 RH |
3932 | case R_68K_PLT8: |
3933 | case R_68K_PLT16: | |
3934 | case R_68K_PLT32: | |
3935 | /* Relocation is to the entry for this symbol in the | |
3936 | procedure linkage table. */ | |
3937 | ||
3938 | /* Resolve a PLTxx reloc against a local symbol directly, | |
3939 | without using the procedure linkage table. */ | |
3940 | if (h == NULL) | |
3941 | break; | |
3942 | ||
3943 | if (h->plt.offset == (bfd_vma) -1 | |
3944 | || !elf_hash_table (info)->dynamic_sections_created) | |
3945 | { | |
3946 | /* We didn't make a PLT entry for this symbol. This | |
3947 | happens when statically linking PIC code, or when | |
3948 | using -Bsymbolic. */ | |
3949 | break; | |
3950 | } | |
3951 | ||
3952 | if (splt == NULL) | |
3953 | { | |
3d4d4302 | 3954 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
3955 | BFD_ASSERT (splt != NULL); |
3956 | } | |
3957 | ||
3958 | relocation = (splt->output_section->vma | |
3959 | + splt->output_offset | |
3960 | + h->plt.offset); | |
44f745a6 | 3961 | unresolved_reloc = FALSE; |
252b5132 RH |
3962 | break; |
3963 | ||
3964 | case R_68K_PLT8O: | |
3965 | case R_68K_PLT16O: | |
3966 | case R_68K_PLT32O: | |
3967 | /* Relocation is the offset of the entry for this symbol in | |
3968 | the procedure linkage table. */ | |
3969 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
3970 | ||
3971 | if (splt == NULL) | |
3972 | { | |
3d4d4302 | 3973 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
3974 | BFD_ASSERT (splt != NULL); |
3975 | } | |
3976 | ||
3977 | relocation = h->plt.offset; | |
44f745a6 | 3978 | unresolved_reloc = FALSE; |
252b5132 RH |
3979 | |
3980 | /* This relocation does not use the addend. */ | |
3981 | rel->r_addend = 0; | |
3982 | ||
3983 | break; | |
3984 | ||
252b5132 RH |
3985 | case R_68K_8: |
3986 | case R_68K_16: | |
3987 | case R_68K_32: | |
2516a1ee AS |
3988 | case R_68K_PC8: |
3989 | case R_68K_PC16: | |
3990 | case R_68K_PC32: | |
252b5132 | 3991 | if (info->shared |
cf35638d | 3992 | && r_symndx != STN_UNDEF |
252b5132 | 3993 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
3994 | && (h == NULL |
3995 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3996 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
3997 | && ((r_type != R_68K_PC8 |
3998 | && r_type != R_68K_PC16 | |
3999 | && r_type != R_68K_PC32) | |
2516a1ee | 4000 | || !SYMBOL_CALLS_LOCAL (info, h))) |
252b5132 RH |
4001 | { |
4002 | Elf_Internal_Rela outrel; | |
947216bf | 4003 | bfd_byte *loc; |
b34976b6 | 4004 | bfd_boolean skip, relocate; |
252b5132 RH |
4005 | |
4006 | /* When generating a shared object, these relocations | |
4007 | are copied into the output file to be resolved at run | |
4008 | time. */ | |
4009 | ||
b34976b6 AM |
4010 | skip = FALSE; |
4011 | relocate = FALSE; | |
252b5132 | 4012 | |
c629eae0 JJ |
4013 | outrel.r_offset = |
4014 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4015 | rel->r_offset); | |
4016 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 4017 | skip = TRUE; |
0bb2d96a | 4018 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 4019 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
4020 | outrel.r_offset += (input_section->output_section->vma |
4021 | + input_section->output_offset); | |
4022 | ||
4023 | if (skip) | |
0bb2d96a | 4024 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 4025 | else if (h != NULL |
d2ff124f AS |
4026 | && h->dynindx != -1 |
4027 | && (r_type == R_68K_PC8 | |
4028 | || r_type == R_68K_PC16 | |
4029 | || r_type == R_68K_PC32 | |
4030 | || !info->shared | |
4031 | || !info->symbolic | |
f5385ebf | 4032 | || !h->def_regular)) |
252b5132 | 4033 | { |
252b5132 | 4034 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 4035 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
4036 | } |
4037 | else | |
4038 | { | |
d2ff124f | 4039 | /* This symbol is local, or marked to become local. */ |
74541ad4 AM |
4040 | outrel.r_addend = relocation + rel->r_addend; |
4041 | ||
252b5132 RH |
4042 | if (r_type == R_68K_32) |
4043 | { | |
b34976b6 | 4044 | relocate = TRUE; |
252b5132 | 4045 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
252b5132 RH |
4046 | } |
4047 | else | |
4048 | { | |
4049 | long indx; | |
4050 | ||
8517fae7 | 4051 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
4052 | indx = 0; |
4053 | else if (sec == NULL || sec->owner == NULL) | |
4054 | { | |
4055 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4056 | return FALSE; |
252b5132 RH |
4057 | } |
4058 | else | |
4059 | { | |
4060 | asection *osec; | |
4061 | ||
74541ad4 AM |
4062 | /* We are turning this relocation into one |
4063 | against a section symbol. It would be | |
4064 | proper to subtract the symbol's value, | |
4065 | osec->vma, from the emitted reloc addend, | |
4066 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
4067 | osec = sec->output_section; |
4068 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
4069 | if (indx == 0) |
4070 | { | |
4071 | struct elf_link_hash_table *htab; | |
4072 | htab = elf_hash_table (info); | |
4073 | osec = htab->text_index_section; | |
4074 | indx = elf_section_data (osec)->dynindx; | |
4075 | } | |
4076 | BFD_ASSERT (indx != 0); | |
252b5132 RH |
4077 | } |
4078 | ||
252b5132 | 4079 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
4080 | } |
4081 | } | |
4082 | ||
d2ff124f AS |
4083 | sreloc = elf_section_data (input_section)->sreloc; |
4084 | if (sreloc == NULL) | |
4085 | abort (); | |
4086 | ||
947216bf AM |
4087 | loc = sreloc->contents; |
4088 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
4089 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
4090 | |
4091 | /* This reloc will be computed at runtime, so there's no | |
4092 | need to do anything now, except for R_68K_32 | |
4093 | relocations that have been turned into | |
4094 | R_68K_RELATIVE. */ | |
4095 | if (!relocate) | |
4096 | continue; | |
4097 | } | |
4098 | ||
4099 | break; | |
4100 | ||
4101 | case R_68K_GNU_VTINHERIT: | |
4102 | case R_68K_GNU_VTENTRY: | |
4103 | /* These are no-ops in the end. */ | |
4104 | continue; | |
4105 | ||
4106 | default: | |
4107 | break; | |
4108 | } | |
4109 | ||
44f745a6 AS |
4110 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4111 | because such sections are not SEC_ALLOC and thus ld.so will | |
4112 | not process them. */ | |
4113 | if (unresolved_reloc | |
4114 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
4115 | && h->def_dynamic) |
4116 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4117 | rel->r_offset) != (bfd_vma) -1) | |
44f745a6 AS |
4118 | { |
4119 | (*_bfd_error_handler) | |
843fe662 | 4120 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4121 | input_bfd, |
4122 | input_section, | |
44f745a6 | 4123 | (long) rel->r_offset, |
843fe662 | 4124 | howto->name, |
44f745a6 AS |
4125 | h->root.root.string); |
4126 | return FALSE; | |
4127 | } | |
4128 | ||
cf35638d | 4129 | if (r_symndx != STN_UNDEF |
cf869cce NC |
4130 | && r_type != R_68K_NONE |
4131 | && (h == NULL | |
4132 | || h->root.type == bfd_link_hash_defined | |
4133 | || h->root.type == bfd_link_hash_defweak)) | |
4134 | { | |
4135 | char sym_type; | |
4136 | ||
4137 | sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type; | |
4138 | ||
4139 | if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS)) | |
4140 | { | |
4141 | const char *name; | |
4142 | ||
4143 | if (h != NULL) | |
4144 | name = h->root.root.string; | |
4145 | else | |
4146 | { | |
4147 | name = (bfd_elf_string_from_elf_section | |
4148 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4149 | if (name == NULL || *name == '\0') | |
4150 | name = bfd_section_name (input_bfd, sec); | |
4151 | } | |
4152 | ||
4153 | (*_bfd_error_handler) | |
4154 | ((sym_type == STT_TLS | |
4155 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
4156 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
4157 | input_bfd, | |
4158 | input_section, | |
4159 | (long) rel->r_offset, | |
4160 | howto->name, | |
4161 | name); | |
4162 | } | |
4163 | } | |
4164 | ||
252b5132 RH |
4165 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4166 | contents, rel->r_offset, | |
4167 | relocation, rel->r_addend); | |
4168 | ||
4169 | if (r != bfd_reloc_ok) | |
4170 | { | |
44f745a6 AS |
4171 | const char *name; |
4172 | ||
4173 | if (h != NULL) | |
4174 | name = h->root.root.string; | |
4175 | else | |
252b5132 | 4176 | { |
44f745a6 AS |
4177 | name = bfd_elf_string_from_elf_section (input_bfd, |
4178 | symtab_hdr->sh_link, | |
4179 | sym->st_name); | |
4180 | if (name == NULL) | |
4181 | return FALSE; | |
4182 | if (*name == '\0') | |
4183 | name = bfd_section_name (input_bfd, sec); | |
4184 | } | |
252b5132 | 4185 | |
44f745a6 AS |
4186 | if (r == bfd_reloc_overflow) |
4187 | { | |
4188 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
4189 | (info, (h ? &h->root : NULL), name, howto->name, |
4190 | (bfd_vma) 0, input_bfd, input_section, | |
4191 | rel->r_offset))) | |
44f745a6 AS |
4192 | return FALSE; |
4193 | } | |
4194 | else | |
4195 | { | |
4196 | (*_bfd_error_handler) | |
d003868e AM |
4197 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4198 | input_bfd, input_section, | |
44f745a6 AS |
4199 | (long) rel->r_offset, name, (int) r); |
4200 | return FALSE; | |
252b5132 RH |
4201 | } |
4202 | } | |
4203 | } | |
4204 | ||
b34976b6 | 4205 | return TRUE; |
252b5132 RH |
4206 | } |
4207 | ||
cc3e26be RS |
4208 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
4209 | into section SEC. */ | |
4210 | ||
4211 | static void | |
4212 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
4213 | { | |
4214 | /* Make VALUE PC-relative. */ | |
4215 | value -= sec->output_section->vma + offset; | |
4216 | ||
4217 | /* Apply any in-place addend. */ | |
4218 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
4219 | ||
4220 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
4221 | } | |
4222 | ||
252b5132 RH |
4223 | /* Finish up dynamic symbol handling. We set the contents of various |
4224 | dynamic sections here. */ | |
4225 | ||
b34976b6 | 4226 | static bfd_boolean |
2c3fc389 NC |
4227 | elf_m68k_finish_dynamic_symbol (bfd *output_bfd, |
4228 | struct bfd_link_info *info, | |
4229 | struct elf_link_hash_entry *h, | |
4230 | Elf_Internal_Sym *sym) | |
252b5132 RH |
4231 | { |
4232 | bfd *dynobj; | |
4233 | ||
4234 | dynobj = elf_hash_table (info)->dynobj; | |
4235 | ||
4236 | if (h->plt.offset != (bfd_vma) -1) | |
4237 | { | |
cc3e26be | 4238 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
4239 | asection *splt; |
4240 | asection *sgot; | |
4241 | asection *srela; | |
4242 | bfd_vma plt_index; | |
4243 | bfd_vma got_offset; | |
4244 | Elf_Internal_Rela rela; | |
947216bf | 4245 | bfd_byte *loc; |
252b5132 RH |
4246 | |
4247 | /* This symbol has an entry in the procedure linkage table. Set | |
4248 | it up. */ | |
4249 | ||
4250 | BFD_ASSERT (h->dynindx != -1); | |
4251 | ||
cc3e26be | 4252 | plt_info = elf_m68k_hash_table (info)->plt_info; |
3d4d4302 AM |
4253 | splt = bfd_get_linker_section (dynobj, ".plt"); |
4254 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); | |
4255 | srela = bfd_get_linker_section (dynobj, ".rela.plt"); | |
252b5132 RH |
4256 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
4257 | ||
4258 | /* Get the index in the procedure linkage table which | |
4259 | corresponds to this symbol. This is the index of this symbol | |
4260 | in all the symbols for which we are making plt entries. The | |
4261 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 4262 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
4263 | |
4264 | /* Get the offset into the .got table of the entry that | |
4265 | corresponds to this function. Each .got entry is 4 bytes. | |
4266 | The first three are reserved. */ | |
4267 | got_offset = (plt_index + 3) * 4; | |
4268 | ||
cc3e26be RS |
4269 | memcpy (splt->contents + h->plt.offset, |
4270 | plt_info->symbol_entry, | |
4271 | plt_info->size); | |
4272 | ||
4273 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
4274 | (sgot->output_section->vma | |
4275 | + sgot->output_offset | |
4276 | + got_offset)); | |
252b5132 RH |
4277 | |
4278 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
4279 | splt->contents |
4280 | + h->plt.offset | |
4281 | + plt_info->symbol_resolve_entry + 2); | |
4282 | ||
4283 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
4284 | splt->output_section->vma); | |
252b5132 RH |
4285 | |
4286 | /* Fill in the entry in the global offset table. */ | |
4287 | bfd_put_32 (output_bfd, | |
4288 | (splt->output_section->vma | |
4289 | + splt->output_offset | |
4290 | + h->plt.offset | |
cc3e26be | 4291 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
4292 | sgot->contents + got_offset); |
4293 | ||
4294 | /* Fill in the entry in the .rela.plt section. */ | |
4295 | rela.r_offset = (sgot->output_section->vma | |
4296 | + sgot->output_offset | |
4297 | + got_offset); | |
4298 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
4299 | rela.r_addend = 0; | |
947216bf AM |
4300 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
4301 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 4302 | |
f5385ebf | 4303 | if (!h->def_regular) |
252b5132 RH |
4304 | { |
4305 | /* Mark the symbol as undefined, rather than as defined in | |
4306 | the .plt section. Leave the value alone. */ | |
4307 | sym->st_shndx = SHN_UNDEF; | |
4308 | } | |
4309 | } | |
4310 | ||
7fb9f789 | 4311 | if (elf_m68k_hash_entry (h)->glist != NULL) |
252b5132 RH |
4312 | { |
4313 | asection *sgot; | |
4314 | asection *srela; | |
7fb9f789 | 4315 | struct elf_m68k_got_entry *got_entry; |
252b5132 RH |
4316 | |
4317 | /* This symbol has an entry in the global offset table. Set it | |
4318 | up. */ | |
4319 | ||
3d4d4302 AM |
4320 | sgot = bfd_get_linker_section (dynobj, ".got"); |
4321 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
252b5132 RH |
4322 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4323 | ||
7fb9f789 NC |
4324 | got_entry = elf_m68k_hash_entry (h)->glist; |
4325 | ||
4326 | while (got_entry != NULL) | |
252b5132 | 4327 | { |
325e58c7 | 4328 | enum elf_m68k_reloc_type r_type; |
cf869cce NC |
4329 | bfd_vma got_entry_offset; |
4330 | ||
325e58c7 | 4331 | r_type = got_entry->key_.type; |
cf869cce | 4332 | got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1; |
7fb9f789 | 4333 | |
7fb9f789 NC |
4334 | /* If this is a -Bsymbolic link, and the symbol is defined |
4335 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4336 | the symbol was forced to be local because of a version file. | |
cf869cce | 4337 | The entry in the global offset table already have been |
7fb9f789 NC |
4338 | initialized in the relocate_section function. */ |
4339 | if (info->shared | |
2516a1ee | 4340 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7fb9f789 | 4341 | { |
325e58c7 | 4342 | bfd_vma relocation; |
cf869cce | 4343 | |
325e58c7 NC |
4344 | relocation = bfd_get_signed_32 (output_bfd, |
4345 | (sgot->contents | |
4346 | + got_entry_offset)); | |
4347 | ||
4348 | /* Undo TP bias. */ | |
4349 | switch (elf_m68k_reloc_got_type (r_type)) | |
cf869cce NC |
4350 | { |
4351 | case R_68K_GOT32O: | |
325e58c7 | 4352 | case R_68K_TLS_LDM32: |
cf869cce NC |
4353 | break; |
4354 | ||
4355 | case R_68K_TLS_GD32: | |
93b3ac75 AS |
4356 | /* The value for this relocation is actually put in |
4357 | the second GOT slot. */ | |
4358 | relocation = bfd_get_signed_32 (output_bfd, | |
4359 | (sgot->contents | |
4360 | + got_entry_offset + 4)); | |
325e58c7 | 4361 | relocation += dtpoff_base (info); |
cf869cce NC |
4362 | break; |
4363 | ||
4364 | case R_68K_TLS_IE32: | |
325e58c7 | 4365 | relocation += tpoff_base (info); |
cf869cce NC |
4366 | break; |
4367 | ||
4368 | default: | |
4369 | BFD_ASSERT (FALSE); | |
cf869cce NC |
4370 | } |
4371 | ||
325e58c7 NC |
4372 | elf_m68k_init_got_entry_local_shared (info, |
4373 | output_bfd, | |
4374 | r_type, | |
4375 | sgot, | |
4376 | got_entry_offset, | |
4377 | relocation, | |
4378 | srela); | |
7fb9f789 NC |
4379 | } |
4380 | else | |
4381 | { | |
325e58c7 NC |
4382 | Elf_Internal_Rela rela; |
4383 | ||
cf869cce NC |
4384 | /* Put zeros to GOT slots that will be initialized |
4385 | at run-time. */ | |
4386 | { | |
4387 | bfd_vma n_slots; | |
4388 | ||
4389 | n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type); | |
4390 | while (n_slots--) | |
4391 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4392 | (sgot->contents + got_entry_offset | |
4393 | + 4 * n_slots)); | |
4394 | } | |
4395 | ||
7fb9f789 | 4396 | rela.r_addend = 0; |
325e58c7 NC |
4397 | rela.r_offset = (sgot->output_section->vma |
4398 | + sgot->output_offset | |
4399 | + got_entry_offset); | |
252b5132 | 4400 | |
325e58c7 | 4401 | switch (elf_m68k_reloc_got_type (r_type)) |
cf869cce NC |
4402 | { |
4403 | case R_68K_GOT32O: | |
4404 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); | |
4405 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4406 | break; | |
4407 | ||
4408 | case R_68K_TLS_GD32: | |
4409 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32); | |
4410 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4411 | ||
4412 | rela.r_offset += 4; | |
4413 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32); | |
4414 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4415 | break; | |
4416 | ||
4417 | case R_68K_TLS_IE32: | |
4418 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32); | |
4419 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4420 | break; | |
4421 | ||
4422 | default: | |
4423 | BFD_ASSERT (FALSE); | |
4424 | break; | |
4425 | } | |
4426 | } | |
7fb9f789 NC |
4427 | |
4428 | got_entry = got_entry->u.s2.next; | |
4429 | } | |
252b5132 RH |
4430 | } |
4431 | ||
f5385ebf | 4432 | if (h->needs_copy) |
252b5132 RH |
4433 | { |
4434 | asection *s; | |
4435 | Elf_Internal_Rela rela; | |
947216bf | 4436 | bfd_byte *loc; |
252b5132 RH |
4437 | |
4438 | /* This symbol needs a copy reloc. Set it up. */ | |
4439 | ||
4440 | BFD_ASSERT (h->dynindx != -1 | |
4441 | && (h->root.type == bfd_link_hash_defined | |
4442 | || h->root.type == bfd_link_hash_defweak)); | |
4443 | ||
3d4d4302 | 4444 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 RH |
4445 | BFD_ASSERT (s != NULL); |
4446 | ||
4447 | rela.r_offset = (h->root.u.def.value | |
4448 | + h->root.u.def.section->output_section->vma | |
4449 | + h->root.u.def.section->output_offset); | |
4450 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
4451 | rela.r_addend = 0; | |
947216bf AM |
4452 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4453 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4454 | } |
4455 | ||
b34976b6 | 4456 | return TRUE; |
252b5132 RH |
4457 | } |
4458 | ||
4459 | /* Finish up the dynamic sections. */ | |
4460 | ||
b34976b6 | 4461 | static bfd_boolean |
2c3fc389 | 4462 | elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
252b5132 RH |
4463 | { |
4464 | bfd *dynobj; | |
4465 | asection *sgot; | |
4466 | asection *sdyn; | |
4467 | ||
4468 | dynobj = elf_hash_table (info)->dynobj; | |
4469 | ||
3d4d4302 | 4470 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); |
252b5132 | 4471 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 4472 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4473 | |
4474 | if (elf_hash_table (info)->dynamic_sections_created) | |
4475 | { | |
4476 | asection *splt; | |
4477 | Elf32_External_Dyn *dyncon, *dynconend; | |
4478 | ||
3d4d4302 | 4479 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
4480 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4481 | ||
4482 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4483 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4484 | for (; dyncon < dynconend; dyncon++) |
4485 | { | |
4486 | Elf_Internal_Dyn dyn; | |
4487 | const char *name; | |
4488 | asection *s; | |
4489 | ||
4490 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4491 | ||
4492 | switch (dyn.d_tag) | |
4493 | { | |
4494 | default: | |
4495 | break; | |
4496 | ||
4497 | case DT_PLTGOT: | |
4498 | name = ".got"; | |
4499 | goto get_vma; | |
4500 | case DT_JMPREL: | |
4501 | name = ".rela.plt"; | |
4502 | get_vma: | |
4503 | s = bfd_get_section_by_name (output_bfd, name); | |
4504 | BFD_ASSERT (s != NULL); | |
4505 | dyn.d_un.d_ptr = s->vma; | |
4506 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4507 | break; | |
4508 | ||
4509 | case DT_PLTRELSZ: | |
4510 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4511 | BFD_ASSERT (s != NULL); | |
eea6121a | 4512 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4513 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4514 | break; | |
4515 | ||
4516 | case DT_RELASZ: | |
4517 | /* The procedure linkage table relocs (DT_JMPREL) should | |
4518 | not be included in the overall relocs (DT_RELA). | |
4519 | Therefore, we override the DT_RELASZ entry here to | |
4520 | make it not include the JMPREL relocs. Since the | |
4521 | linker script arranges for .rela.plt to follow all | |
4522 | other relocation sections, we don't have to worry | |
4523 | about changing the DT_RELA entry. */ | |
4524 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4525 | if (s != NULL) | |
eea6121a | 4526 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
4527 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4528 | break; | |
4529 | } | |
4530 | } | |
4531 | ||
4532 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 4533 | if (splt->size > 0) |
252b5132 | 4534 | { |
cc3e26be RS |
4535 | const struct elf_m68k_plt_info *plt_info; |
4536 | ||
4537 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
4538 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
4539 | ||
4540 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
4541 | (sgot->output_section->vma | |
4542 | + sgot->output_offset | |
4543 | + 4)); | |
4544 | ||
4545 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
4546 | (sgot->output_section->vma | |
4547 | + sgot->output_offset | |
4548 | + 8)); | |
4549 | ||
4550 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
4551 | = plt_info->size; | |
252b5132 | 4552 | } |
252b5132 RH |
4553 | } |
4554 | ||
4555 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4556 | if (sgot->size > 0) |
252b5132 RH |
4557 | { |
4558 | if (sdyn == NULL) | |
4559 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4560 | else | |
4561 | bfd_put_32 (output_bfd, | |
4562 | sdyn->output_section->vma + sdyn->output_offset, | |
4563 | sgot->contents); | |
4564 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4565 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4566 | } | |
4567 | ||
4568 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4569 | ||
b34976b6 | 4570 | return TRUE; |
252b5132 RH |
4571 | } |
4572 | ||
0752970e NC |
4573 | /* Given a .data section and a .emreloc in-memory section, store |
4574 | relocation information into the .emreloc section which can be | |
4575 | used at runtime to relocate the section. This is called by the | |
4576 | linker when the --embedded-relocs switch is used. This is called | |
4577 | after the add_symbols entry point has been called for all the | |
4578 | objects, and before the final_link entry point is called. */ | |
4579 | ||
b34976b6 | 4580 | bfd_boolean |
0752970e NC |
4581 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
4582 | bfd *abfd; | |
4583 | struct bfd_link_info *info; | |
4584 | asection *datasec; | |
4585 | asection *relsec; | |
4586 | char **errmsg; | |
4587 | { | |
4588 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
4589 | Elf_Internal_Sym *isymbuf = NULL; |
4590 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
4591 | Elf_Internal_Rela *irel, *irelend; |
4592 | bfd_byte *p; | |
dc810e39 | 4593 | bfd_size_type amt; |
0752970e | 4594 | |
1049f94e | 4595 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
4596 | |
4597 | *errmsg = NULL; | |
4598 | ||
4599 | if (datasec->reloc_count == 0) | |
b34976b6 | 4600 | return TRUE; |
0752970e NC |
4601 | |
4602 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 4603 | |
0752970e | 4604 | /* Get a copy of the native relocations. */ |
45d6a902 | 4605 | internal_relocs = (_bfd_elf_link_read_relocs |
2c3fc389 | 4606 | (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL, |
0752970e NC |
4607 | info->keep_memory)); |
4608 | if (internal_relocs == NULL) | |
4609 | goto error_return; | |
0752970e | 4610 | |
dc810e39 AM |
4611 | amt = (bfd_size_type) datasec->reloc_count * 12; |
4612 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
4613 | if (relsec->contents == NULL) |
4614 | goto error_return; | |
4615 | ||
4616 | p = relsec->contents; | |
4617 | ||
4618 | irelend = internal_relocs + datasec->reloc_count; | |
4619 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
4620 | { | |
4621 | asection *targetsec; | |
4622 | ||
4623 | /* We are going to write a four byte longword into the runtime | |
4624 | reloc section. The longword will be the address in the data | |
4625 | section which must be relocated. It is followed by the name | |
4626 | of the target section NUL-padded or truncated to 8 | |
4627 | characters. */ | |
4628 | ||
4629 | /* We can only relocate absolute longword relocs at run time. */ | |
4630 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
4631 | { | |
4632 | *errmsg = _("unsupported reloc type"); | |
4633 | bfd_set_error (bfd_error_bad_value); | |
4634 | goto error_return; | |
4635 | } | |
4636 | ||
4637 | /* Get the target section referred to by the reloc. */ | |
4638 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
4639 | { | |
0752970e | 4640 | /* A local symbol. */ |
6cdc0ccc AM |
4641 | Elf_Internal_Sym *isym; |
4642 | ||
4643 | /* Read this BFD's local symbols if we haven't done so already. */ | |
4644 | if (isymbuf == NULL) | |
4645 | { | |
4646 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4647 | if (isymbuf == NULL) | |
4648 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
4649 | symtab_hdr->sh_info, 0, | |
4650 | NULL, NULL, NULL); | |
4651 | if (isymbuf == NULL) | |
4652 | goto error_return; | |
4653 | } | |
0752970e | 4654 | |
6cdc0ccc AM |
4655 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
4656 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
4657 | } |
4658 | else | |
4659 | { | |
4660 | unsigned long indx; | |
4661 | struct elf_link_hash_entry *h; | |
4662 | ||
4663 | /* An external symbol. */ | |
4664 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
4665 | h = elf_sym_hashes (abfd)[indx]; | |
4666 | BFD_ASSERT (h != NULL); | |
4667 | if (h->root.type == bfd_link_hash_defined | |
4668 | || h->root.type == bfd_link_hash_defweak) | |
4669 | targetsec = h->root.u.def.section; | |
4670 | else | |
4671 | targetsec = NULL; | |
4672 | } | |
4673 | ||
4674 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
4675 | memset (p + 4, 0, 8); | |
4676 | if (targetsec != NULL) | |
f075ee0c | 4677 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 4678 | } |
c3668558 | 4679 | |
6cdc0ccc AM |
4680 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4681 | free (isymbuf); | |
4682 | if (internal_relocs != NULL | |
4683 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4684 | free (internal_relocs); | |
b34976b6 | 4685 | return TRUE; |
0752970e NC |
4686 | |
4687 | error_return: | |
6cdc0ccc AM |
4688 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4689 | free (isymbuf); | |
4690 | if (internal_relocs != NULL | |
4691 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4692 | free (internal_relocs); | |
b34976b6 | 4693 | return FALSE; |
0752970e NC |
4694 | } |
4695 | ||
7fb9f789 NC |
4696 | /* Set target options. */ |
4697 | ||
4698 | void | |
4699 | bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling) | |
4700 | { | |
4701 | struct elf_m68k_link_hash_table *htab; | |
b1345da3 MR |
4702 | bfd_boolean use_neg_got_offsets_p; |
4703 | bfd_boolean allow_multigot_p; | |
4704 | bfd_boolean local_gp_p; | |
7fb9f789 NC |
4705 | |
4706 | switch (got_handling) | |
4707 | { | |
4708 | case 0: | |
4709 | /* --got=single. */ | |
b1345da3 MR |
4710 | local_gp_p = FALSE; |
4711 | use_neg_got_offsets_p = FALSE; | |
4712 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4713 | break; |
4714 | ||
4715 | case 1: | |
4716 | /* --got=negative. */ | |
b1345da3 MR |
4717 | local_gp_p = TRUE; |
4718 | use_neg_got_offsets_p = TRUE; | |
4719 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4720 | break; |
4721 | ||
4722 | case 2: | |
4723 | /* --got=multigot. */ | |
b1345da3 MR |
4724 | local_gp_p = TRUE; |
4725 | use_neg_got_offsets_p = TRUE; | |
4726 | allow_multigot_p = TRUE; | |
7fb9f789 NC |
4727 | break; |
4728 | ||
4729 | default: | |
4730 | BFD_ASSERT (FALSE); | |
b1345da3 MR |
4731 | return; |
4732 | } | |
4733 | ||
4734 | htab = elf_m68k_hash_table (info); | |
4735 | if (htab != NULL) | |
4736 | { | |
4737 | htab->local_gp_p = local_gp_p; | |
4738 | htab->use_neg_got_offsets_p = use_neg_got_offsets_p; | |
4739 | htab->allow_multigot_p = allow_multigot_p; | |
7fb9f789 NC |
4740 | } |
4741 | } | |
4742 | ||
aa91b392 | 4743 | static enum elf_reloc_type_class |
7e612e98 AM |
4744 | elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4745 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4746 | const Elf_Internal_Rela *rela) | |
aa91b392 | 4747 | { |
f51e552e | 4748 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
4749 | { |
4750 | case R_68K_RELATIVE: | |
4751 | return reloc_class_relative; | |
4752 | case R_68K_JMP_SLOT: | |
4753 | return reloc_class_plt; | |
4754 | case R_68K_COPY: | |
4755 | return reloc_class_copy; | |
4756 | default: | |
4757 | return reloc_class_normal; | |
4758 | } | |
4759 | } | |
4760 | ||
1715e0e3 AS |
4761 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4762 | or (bfd_vma) -1 if it should not be included. */ | |
4763 | ||
4764 | static bfd_vma | |
4765 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
4766 | const arelent *rel ATTRIBUTE_UNUSED) | |
4767 | { | |
cc3e26be | 4768 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
4769 | } |
4770 | ||
8bbeae90 AS |
4771 | /* Support for core dump NOTE sections. */ |
4772 | ||
4773 | static bfd_boolean | |
4774 | elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
4775 | { | |
4776 | int offset; | |
4777 | size_t size; | |
4778 | ||
4779 | switch (note->descsz) | |
4780 | { | |
4781 | default: | |
4782 | return FALSE; | |
4783 | ||
4784 | case 154: /* Linux/m68k */ | |
4785 | /* pr_cursig */ | |
228e534f | 4786 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
8bbeae90 AS |
4787 | |
4788 | /* pr_pid */ | |
228e534f | 4789 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
8bbeae90 AS |
4790 | |
4791 | /* pr_reg */ | |
4792 | offset = 70; | |
4793 | size = 80; | |
4794 | ||
4795 | break; | |
4796 | } | |
4797 | ||
4798 | /* Make a ".reg/999" section. */ | |
4799 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
4800 | size, note->descpos + offset); | |
4801 | } | |
4802 | ||
4803 | static bfd_boolean | |
4804 | elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4805 | { | |
4806 | switch (note->descsz) | |
4807 | { | |
4808 | default: | |
4809 | return FALSE; | |
4810 | ||
4811 | case 124: /* Linux/m68k elf_prpsinfo. */ | |
228e534f | 4812 | elf_tdata (abfd)->core->pid |
8bbeae90 | 4813 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 4814 | elf_tdata (abfd)->core->program |
8bbeae90 | 4815 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 4816 | elf_tdata (abfd)->core->command |
8bbeae90 AS |
4817 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
4818 | } | |
4819 | ||
4820 | /* Note that for some reason, a spurious space is tacked | |
4821 | onto the end of the args in some (at least one anyway) | |
4822 | implementations, so strip it off if it exists. */ | |
4823 | { | |
228e534f | 4824 | char *command = elf_tdata (abfd)->core->command; |
8bbeae90 AS |
4825 | int n = strlen (command); |
4826 | ||
4827 | if (n > 0 && command[n - 1] == ' ') | |
4828 | command[n - 1] = '\0'; | |
4829 | } | |
4830 | ||
4831 | return TRUE; | |
4832 | } | |
4833 | ||
f6ec89e7 AS |
4834 | /* Hook called by the linker routine which adds symbols from an object |
4835 | file. */ | |
4836 | ||
4837 | static bfd_boolean | |
4838 | elf_m68k_add_symbol_hook (bfd *abfd, | |
4839 | struct bfd_link_info *info, | |
4840 | Elf_Internal_Sym *sym, | |
4841 | const char **namep ATTRIBUTE_UNUSED, | |
4842 | flagword *flagsp ATTRIBUTE_UNUSED, | |
4843 | asection **secp ATTRIBUTE_UNUSED, | |
4844 | bfd_vma *valp ATTRIBUTE_UNUSED) | |
4845 | { | |
4846 | if ((abfd->flags & DYNAMIC) == 0 | |
4847 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC | |
4848 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
4849 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4850 | ||
4851 | return TRUE; | |
4852 | } | |
4853 | ||
252b5132 RH |
4854 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
4855 | #define TARGET_BIG_NAME "elf32-m68k" | |
4856 | #define ELF_MACHINE_CODE EM_68K | |
4857 | #define ELF_MAXPAGESIZE 0x2000 | |
4858 | #define elf_backend_create_dynamic_sections \ | |
4859 | _bfd_elf_create_dynamic_sections | |
4860 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4861 | elf_m68k_link_hash_table_create | |
7fb9f789 NC |
4862 | /* ??? Should it be this macro or bfd_elfNN_bfd_link_hash_table_create? */ |
4863 | #define bfd_elf32_bfd_link_hash_table_free \ | |
4864 | elf_m68k_link_hash_table_free | |
4865 | #define bfd_elf32_bfd_final_link bfd_elf_final_link | |
252b5132 RH |
4866 | |
4867 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
4868 | #define elf_backend_always_size_sections \ |
4869 | elf_m68k_always_size_sections | |
252b5132 RH |
4870 | #define elf_backend_adjust_dynamic_symbol \ |
4871 | elf_m68k_adjust_dynamic_symbol | |
4872 | #define elf_backend_size_dynamic_sections \ | |
4873 | elf_m68k_size_dynamic_sections | |
fc9f1df9 | 4874 | #define elf_backend_final_write_processing elf_m68k_final_write_processing |
74541ad4 | 4875 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
4876 | #define elf_backend_relocate_section elf_m68k_relocate_section |
4877 | #define elf_backend_finish_dynamic_symbol \ | |
4878 | elf_m68k_finish_dynamic_symbol | |
4879 | #define elf_backend_finish_dynamic_sections \ | |
4880 | elf_m68k_finish_dynamic_sections | |
4881 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
4882 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
7fb9f789 | 4883 | #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol |
9e1281c7 CM |
4884 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
4885 | elf32_m68k_merge_private_bfd_data | |
4886 | #define bfd_elf32_bfd_set_private_flags \ | |
4887 | elf32_m68k_set_private_flags | |
4888 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
4889 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 4890 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 4891 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 4892 | #define elf_backend_object_p elf32_m68k_object_p |
8bbeae90 AS |
4893 | #define elf_backend_grok_prstatus elf_m68k_grok_prstatus |
4894 | #define elf_backend_grok_psinfo elf_m68k_grok_psinfo | |
f6ec89e7 | 4895 | #define elf_backend_add_symbol_hook elf_m68k_add_symbol_hook |
9e1281c7 | 4896 | |
252b5132 | 4897 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 4898 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4899 | #define elf_backend_want_got_plt 1 |
4900 | #define elf_backend_plt_readonly 1 | |
4901 | #define elf_backend_want_plt_sym 0 | |
4902 | #define elf_backend_got_header_size 12 | |
b491616a | 4903 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4904 | |
4905 | #include "elf32-target.h" |