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[binutils.git] / bfd / elf32-m68k.c
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252b5132 1/* Motorola 68k series support for 32-bit ELF
219d1afa 2 Copyright (C) 1993-2018 Free Software Foundation, Inc.
252b5132 3
ae9a127f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
ae9a127f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
ae9a127f 9 (at your option) any later version.
252b5132 10
ae9a127f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
ae9a127f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
26#include "elf/m68k.h"
266abb8f 27#include "opcode/m68k.h"
252b5132 28
2c3fc389
NC		 29static bfd_boolean
30elf_m68k_discard_copies (struct elf_link_hash_entry *, void *);
31
32static reloc_howto_type howto_table[] =
33{
07d6d2b8
AM		 34 HOWTO(R_68K_NONE, 0, 3, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE),
35 HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE),
36 HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE),
37 HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE),
38 HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE),
39 HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE),
40 HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE),
41 HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE),
42 HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE),
43 HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE),
44 HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE),
45 HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE),
46 HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE),
47 HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE),
48 HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE),
49 HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE),
50 HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE),
51 HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE),
52 HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE),
53 HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE),
54 HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE),
55 HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE),
56 HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE),
ae9a127f 57 /* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 58 HOWTO (R_68K_GNU_VTINHERIT, /* type */
59 0, /* rightshift */
60 2, /* size (0 = byte, 1 = short, 2 = long) */
61 0, /* bitsize */
b34976b6 62 FALSE, /* pc_relative */
252b5132
RH		 63 0, /* bitpos */
64 complain_overflow_dont, /* complain_on_overflow */
65 NULL, /* special_function */
66 "R_68K_GNU_VTINHERIT", /* name */
b34976b6 67 FALSE, /* partial_inplace */
252b5132
RH		 68 0, /* src_mask */
69 0, /* dst_mask */
b34976b6 70 FALSE),
ae9a127f 71 /* GNU extension to record C++ vtable member usage. */
252b5132
RH		 72 HOWTO (R_68K_GNU_VTENTRY, /* type */
73 0, /* rightshift */
74 2, /* size (0 = byte, 1 = short, 2 = long) */
75 0, /* bitsize */
b34976b6 76 FALSE, /* pc_relative */
252b5132
RH		 77 0, /* bitpos */
78 complain_overflow_dont, /* complain_on_overflow */
79 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
80 "R_68K_GNU_VTENTRY", /* name */
b34976b6 81 FALSE, /* partial_inplace */
252b5132
RH		 82 0, /* src_mask */
83 0, /* dst_mask */
b34976b6 84 FALSE),
cf869cce
NC		 85
86 /* TLS general dynamic variable reference. */
87 HOWTO (R_68K_TLS_GD32, /* type */
88 0, /* rightshift */
89 2, /* size (0 = byte, 1 = short, 2 = long) */
90 32, /* bitsize */
91 FALSE, /* pc_relative */
92 0, /* bitpos */
93 complain_overflow_bitfield, /* complain_on_overflow */
94 bfd_elf_generic_reloc, /* special_function */
95 "R_68K_TLS_GD32", /* name */
96 FALSE, /* partial_inplace */
97 0, /* src_mask */
98 0xffffffff, /* dst_mask */
99 FALSE), /* pcrel_offset */
100
101 HOWTO (R_68K_TLS_GD16, /* type */
102 0, /* rightshift */
103 1, /* size (0 = byte, 1 = short, 2 = long) */
104 16, /* bitsize */
105 FALSE, /* pc_relative */
106 0, /* bitpos */
107 complain_overflow_signed, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_68K_TLS_GD16", /* name */
110 FALSE, /* partial_inplace */
111 0, /* src_mask */
112 0x0000ffff, /* dst_mask */
113 FALSE), /* pcrel_offset */
114
115 HOWTO (R_68K_TLS_GD8, /* type */
116 0, /* rightshift */
117 0, /* size (0 = byte, 1 = short, 2 = long) */
118 8, /* bitsize */
119 FALSE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_signed, /* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_68K_TLS_GD8", /* name */
124 FALSE, /* partial_inplace */
125 0, /* src_mask */
126 0x000000ff, /* dst_mask */
127 FALSE), /* pcrel_offset */
128
129 /* TLS local dynamic variable reference. */
130 HOWTO (R_68K_TLS_LDM32, /* type */
131 0, /* rightshift */
132 2, /* size (0 = byte, 1 = short, 2 = long) */
133 32, /* bitsize */
134 FALSE, /* pc_relative */
135 0, /* bitpos */
136 complain_overflow_bitfield, /* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_68K_TLS_LDM32", /* name */
139 FALSE, /* partial_inplace */
140 0, /* src_mask */
141 0xffffffff, /* dst_mask */
142 FALSE), /* pcrel_offset */
143
144 HOWTO (R_68K_TLS_LDM16, /* type */
145 0, /* rightshift */
146 1, /* size (0 = byte, 1 = short, 2 = long) */
147 16, /* bitsize */
148 FALSE, /* pc_relative */
149 0, /* bitpos */
150 complain_overflow_signed, /* complain_on_overflow */
151 bfd_elf_generic_reloc, /* special_function */
152 "R_68K_TLS_LDM16", /* name */
153 FALSE, /* partial_inplace */
154 0, /* src_mask */
155 0x0000ffff, /* dst_mask */
156 FALSE), /* pcrel_offset */
157
158 HOWTO (R_68K_TLS_LDM8, /* type */
159 0, /* rightshift */
160 0, /* size (0 = byte, 1 = short, 2 = long) */
161 8, /* bitsize */
162 FALSE, /* pc_relative */
163 0, /* bitpos */
164 complain_overflow_signed, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_68K_TLS_LDM8", /* name */
167 FALSE, /* partial_inplace */
168 0, /* src_mask */
169 0x000000ff, /* dst_mask */
170 FALSE), /* pcrel_offset */
171
172 HOWTO (R_68K_TLS_LDO32, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 32, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_bitfield, /* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_68K_TLS_LDO32", /* name */
181 FALSE, /* partial_inplace */
182 0, /* src_mask */
183 0xffffffff, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 HOWTO (R_68K_TLS_LDO16, /* type */
187 0, /* rightshift */
188 1, /* size (0 = byte, 1 = short, 2 = long) */
189 16, /* bitsize */
190 FALSE, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_signed, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_68K_TLS_LDO16", /* name */
195 FALSE, /* partial_inplace */
196 0, /* src_mask */
197 0x0000ffff, /* dst_mask */
198 FALSE), /* pcrel_offset */
199
200 HOWTO (R_68K_TLS_LDO8, /* type */
201 0, /* rightshift */
202 0, /* size (0 = byte, 1 = short, 2 = long) */
203 8, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_signed, /* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_68K_TLS_LDO8", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0x000000ff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* TLS initial execution variable reference. */
215 HOWTO (R_68K_TLS_IE32, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 32, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_bitfield, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_68K_TLS_IE32", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0xffffffff, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 HOWTO (R_68K_TLS_IE16, /* type */
230 0, /* rightshift */
231 1, /* size (0 = byte, 1 = short, 2 = long) */
232 16, /* bitsize */
233 FALSE, /* pc_relative */
234 0, /* bitpos */
235 complain_overflow_signed, /* complain_on_overflow */
236 bfd_elf_generic_reloc, /* special_function */
237 "R_68K_TLS_IE16", /* name */
238 FALSE, /* partial_inplace */
239 0, /* src_mask */
240 0x0000ffff, /* dst_mask */
241 FALSE), /* pcrel_offset */
242
243 HOWTO (R_68K_TLS_IE8, /* type */
244 0, /* rightshift */
245 0, /* size (0 = byte, 1 = short, 2 = long) */
246 8, /* bitsize */
247 FALSE, /* pc_relative */
248 0, /* bitpos */
249 complain_overflow_signed, /* complain_on_overflow */
250 bfd_elf_generic_reloc, /* special_function */
251 "R_68K_TLS_IE8", /* name */
252 FALSE, /* partial_inplace */
253 0, /* src_mask */
254 0x000000ff, /* dst_mask */
255 FALSE), /* pcrel_offset */
256
257 /* TLS local execution variable reference. */
258 HOWTO (R_68K_TLS_LE32, /* type */
259 0, /* rightshift */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
261 32, /* bitsize */
262 FALSE, /* pc_relative */
263 0, /* bitpos */
264 complain_overflow_bitfield, /* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_68K_TLS_LE32", /* name */
267 FALSE, /* partial_inplace */
268 0, /* src_mask */
269 0xffffffff, /* dst_mask */
270 FALSE), /* pcrel_offset */
271
272 HOWTO (R_68K_TLS_LE16, /* type */
273 0, /* rightshift */
274 1, /* size (0 = byte, 1 = short, 2 = long) */
275 16, /* bitsize */
276 FALSE, /* pc_relative */
277 0, /* bitpos */
278 complain_overflow_signed, /* complain_on_overflow */
279 bfd_elf_generic_reloc, /* special_function */
280 "R_68K_TLS_LE16", /* name */
281 FALSE, /* partial_inplace */
282 0, /* src_mask */
283 0x0000ffff, /* dst_mask */
284 FALSE), /* pcrel_offset */
285
286 HOWTO (R_68K_TLS_LE8, /* type */
287 0, /* rightshift */
288 0, /* size (0 = byte, 1 = short, 2 = long) */
289 8, /* bitsize */
290 FALSE, /* pc_relative */
291 0, /* bitpos */
292 complain_overflow_signed, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_68K_TLS_LE8", /* name */
295 FALSE, /* partial_inplace */
296 0, /* src_mask */
297 0x000000ff, /* dst_mask */
298 FALSE), /* pcrel_offset */
299
300 /* TLS GD/LD dynamic relocations. */
301 HOWTO (R_68K_TLS_DTPMOD32, /* type */
302 0, /* rightshift */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
304 32, /* bitsize */
305 FALSE, /* pc_relative */
306 0, /* bitpos */
307 complain_overflow_dont, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_68K_TLS_DTPMOD32", /* name */
310 FALSE, /* partial_inplace */
311 0, /* src_mask */
312 0xffffffff, /* dst_mask */
313 FALSE), /* pcrel_offset */
314
315 HOWTO (R_68K_TLS_DTPREL32, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 32, /* bitsize */
319 FALSE, /* pc_relative */
320 0, /* bitpos */
321 complain_overflow_dont, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_68K_TLS_DTPREL32", /* name */
324 FALSE, /* partial_inplace */
325 0, /* src_mask */
326 0xffffffff, /* dst_mask */
327 FALSE), /* pcrel_offset */
328
329 HOWTO (R_68K_TLS_TPREL32, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 32, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_dont, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_68K_TLS_TPREL32", /* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0xffffffff, /* dst_mask */
341 FALSE), /* pcrel_offset */
252b5132
RH		 342};
343
344static void
c86ad514 345rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
252b5132 346{
c86ad514
AS		 347 unsigned int indx = ELF32_R_TYPE (dst->r_info);
348
349 if (indx >= (unsigned int) R_68K_max)
350 {
695344c0 351 /* xgettext:c-format */
0aa13fee
AM		 352 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
353 abfd, indx);
c86ad514
AS		 354 indx = R_68K_NONE;
355 }
356 cache_ptr->howto = &howto_table[indx];
252b5132
RH		 357}
358
359#define elf_info_to_howto rtype_to_howto
360
361static const struct
362{
363 bfd_reloc_code_real_type bfd_val;
364 int elf_val;
cf869cce
NC		 365}
366 reloc_map[] =
367{
252b5132
RH		 368 { BFD_RELOC_NONE, R_68K_NONE },
369 { BFD_RELOC_32, R_68K_32 },
370 { BFD_RELOC_16, R_68K_16 },
371 { BFD_RELOC_8, R_68K_8 },
372 { BFD_RELOC_32_PCREL, R_68K_PC32 },
373 { BFD_RELOC_16_PCREL, R_68K_PC16 },
374 { BFD_RELOC_8_PCREL, R_68K_PC8 },
375 { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
376 { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
377 { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
378 { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
379 { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
380 { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
381 { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
382 { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
383 { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
384 { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
385 { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
386 { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
387 { BFD_RELOC_NONE, R_68K_COPY },
388 { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
389 { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
390 { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
391 { BFD_RELOC_CTOR, R_68K_32 },
392 { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT },
393 { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY },
cf869cce
NC		 394 { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 },
395 { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 },
396 { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 },
397 { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 },
398 { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 },
399 { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 },
400 { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 },
401 { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 },
402 { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 },
403 { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 },
404 { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 },
405 { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 },
406 { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 },
407 { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 },
408 { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 },
252b5132
RH		 409};
410
411static reloc_howto_type *
2c3fc389
NC		 412reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
413 bfd_reloc_code_real_type code)
252b5132
RH		 414{
415 unsigned int i;
416 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
417 {
418 if (reloc_map[i].bfd_val == code)
419 return &howto_table[reloc_map[i].elf_val];
420 }
421 return 0;
422}
423
157090f7
AM		 424static reloc_howto_type *
425reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
426{
427 unsigned int i;
428
429 for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
430 if (howto_table[i].name != NULL
431 && strcasecmp (howto_table[i].name, r_name) == 0)
432 return &howto_table[i];
433
434 return NULL;
435}
436
252b5132 437#define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
157090f7 438#define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
252b5132 439#define ELF_ARCH bfd_arch_m68k
ae95ffa6 440#define ELF_TARGET_ID M68K_ELF_DATA
252b5132
RH		 441\f
442/* Functions for the m68k ELF linker. */
443
444/* The name of the dynamic interpreter. This is put in the .interp
445 section. */
446
447#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
448
cc3e26be
RS		 449/* Describes one of the various PLT styles. */
450
451struct elf_m68k_plt_info
452{
453 /* The size of each PLT entry. */
454 bfd_vma size;
455
456 /* The template for the first PLT entry. */
457 const bfd_byte *plt0_entry;
458
459 /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
460 The comments by each member indicate the value that the relocation
461 is against. */
462 struct {
463 unsigned int got4; /* .got + 4 */
464 unsigned int got8; /* .got + 8 */
465 } plt0_relocs;
466
467 /* The template for a symbol's PLT entry. */
468 const bfd_byte *symbol_entry;
469
470 /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
471 The comments by each member indicate the value that the relocation
472 is against. */
473 struct {
474 unsigned int got; /* the symbol's .got.plt entry */
475 unsigned int plt; /* .plt */
476 } symbol_relocs;
477
478 /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
479 The stub starts with "move.l #relocoffset,%d0". */
480 bfd_vma symbol_resolve_entry;
481};
482
252b5132
RH		 483/* The size in bytes of an entry in the procedure linkage table. */
484
485#define PLT_ENTRY_SIZE 20
486
487/* The first entry in a procedure linkage table looks like this. See
488 the SVR4 ABI m68k supplement to see how this works. */
489
490static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
491{
492 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
cc3e26be 493 0, 0, 0, 2, /* + (.got + 4) - . */
252b5132 494 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
cc3e26be 495 0, 0, 0, 2, /* + (.got + 8) - . */
252b5132
RH		 496 0, 0, 0, 0 /* pad out to 20 bytes. */
497};
498
499/* Subsequent entries in a procedure linkage table look like this. */
500
501static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
502{
503 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
cc3e26be 504 0, 0, 0, 2, /* + (.got.plt entry) - . */
252b5132 505 0x2f, 0x3c, /* move.l #offset,-(%sp) */
cc3e26be 506 0, 0, 0, 0, /* + reloc index */
252b5132 507 0x60, 0xff, /* bra.l .plt */
cc3e26be 508 0, 0, 0, 0 /* + .plt - . */
252b5132
RH		 509};
510
695344c0
NC		 511static const struct elf_m68k_plt_info elf_m68k_plt_info =
512{
cc3e26be
RS		 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 520static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] =
238d258f 521{
07d6d2b8
AM		 522 0x20, 0x3c, /* move.l #offset,%d0 */
523 0, 0, 0, 0, /* + (.got + 4) - . */
cc3e26be 524 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
07d6d2b8
AM		 525 0x20, 0x3c, /* move.l #offset,%d0 */
526 0, 0, 0, 0, /* + (.got + 8) - . */
cc3e26be 527 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
07d6d2b8 528 0x4e, 0xd0, /* jmp (%a0) */
238d258f
NC		 529 0x4e, 0x71 /* nop */
530};
531
532/* Subsequent entries in a procedure linkage table look like this. */
533
cc3e26be 534static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] =
238d258f 535{
07d6d2b8
AM		 536 0x20, 0x3c, /* move.l #offset,%d0 */
537 0, 0, 0, 0, /* + (.got.plt entry) - . */
cc3e26be 538 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
07d6d2b8
AM		 539 0x4e, 0xd0, /* jmp (%a0) */
540 0x2f, 0x3c, /* move.l #offset,-(%sp) */
541 0, 0, 0, 0, /* + reloc index */
542 0x60, 0xff, /* bra.l .plt */
543 0, 0, 0, 0 /* + .plt - . */
238d258f
NC		 544};
545
695344c0
NC		 546static const struct elf_m68k_plt_info elf_isab_plt_info =
547{
cc3e26be
RS		 548 ISAB_PLT_ENTRY_SIZE,
549 elf_isab_plt0_entry, { 2, 12 },
550 elf_isab_plt_entry, { 2, 20 }, 12
551};
9e1281c7 552
7fb9f789 553#define ISAC_PLT_ENTRY_SIZE 24
9a2e615a
NS		 554
555static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] =
556{
557 0x20, 0x3c, /* move.l #offset,%d0 */
558 0, 0, 0, 0, /* replaced with .got + 4 - . */
559 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
560 0x20, 0x3c, /* move.l #offset,%d0 */
561 0, 0, 0, 0, /* replaced with .got + 8 - . */
562 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
563 0x4e, 0xd0, /* jmp (%a0) */
564 0x4e, 0x71 /* nop */
565};
566
567/* Subsequent entries in a procedure linkage table look like this. */
568
569static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] =
570{
571 0x20, 0x3c, /* move.l #offset,%d0 */
572 0, 0, 0, 0, /* replaced with (.got entry) - . */
573 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
574 0x4e, 0xd0, /* jmp (%a0) */
575 0x2f, 0x3c, /* move.l #offset,-(%sp) */
576 0, 0, 0, 0, /* replaced with offset into relocation table */
577 0x61, 0xff, /* bsr.l .plt */
07d6d2b8 578 0, 0, 0, 0 /* replaced with .plt - . */
9a2e615a
NS		 579};
580
695344c0
NC		 581static const struct elf_m68k_plt_info elf_isac_plt_info =
582{
9a2e615a
NS		 583 ISAC_PLT_ENTRY_SIZE,
584 elf_isac_plt0_entry, { 2, 12},
585 elf_isac_plt_entry, { 2, 20 }, 12
586};
587
cc3e26be 588#define CPU32_PLT_ENTRY_SIZE 24
9e1281c7 589/* Procedure linkage table entries for the cpu32 */
cc3e26be 590static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] =
9e1281c7 591{
6091b433 592 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
07d6d2b8 593 0, 0, 0, 2, /* + (.got + 4) - . */
6091b433 594 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
07d6d2b8
AM		 595 0, 0, 0, 2, /* + (.got + 8) - . */
596 0x4e, 0xd1, /* jmp %a1@ */
597 0, 0, 0, 0, /* pad out to 24 bytes. */
9e1281c7
CM		 598 0, 0
599};
600
cc3e26be 601static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] =
9e1281c7 602{
1ca42bad 603 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
07d6d2b8
AM		 604 0, 0, 0, 2, /* + (.got.plt entry) - . */
605 0x4e, 0xd1, /* jmp %a1@ */
606 0x2f, 0x3c, /* move.l #offset,-(%sp) */
607 0, 0, 0, 0, /* + reloc index */
608 0x60, 0xff, /* bra.l .plt */
609 0, 0, 0, 0, /* + .plt - . */
9e1281c7
CM		 610 0, 0
611};
612
695344c0
NC		 613static const struct elf_m68k_plt_info elf_cpu32_plt_info =
614{
cc3e26be
RS		 615 CPU32_PLT_ENTRY_SIZE,
616 elf_cpu32_plt0_entry, { 4, 12 },
617 elf_cpu32_plt_entry, { 4, 18 }, 10
618};
619
252b5132
RH		 620/* The m68k linker needs to keep track of the number of relocs that it
621 decides to copy in check_relocs for each symbol. This is so that it
622 can discard PC relative relocs if it doesn't need them when linking
623 with -Bsymbolic. We store the information in a field extending the
624 regular ELF linker hash table. */
625
626/* This structure keeps track of the number of PC relative relocs we have
627 copied for a given symbol. */
628
629struct elf_m68k_pcrel_relocs_copied
630{
631 /* Next section. */
632 struct elf_m68k_pcrel_relocs_copied *next;
633 /* A section in dynobj. */
634 asection *section;
635 /* Number of relocs copied in this section. */
636 bfd_size_type count;
637};
638
7fb9f789
NC		 639/* Forward declaration. */
640struct elf_m68k_got_entry;
641
252b5132
RH		 642/* m68k ELF linker hash entry. */
643
644struct elf_m68k_link_hash_entry
645{
646 struct elf_link_hash_entry root;
647
648 /* Number of PC relative relocs copied for this symbol. */
649 struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
7fb9f789
NC		 650
651 /* Key to got_entries. */
652 unsigned long got_entry_key;
653
654 /* List of GOT entries for this symbol. This list is build during
655 offset finalization and is used within elf_m68k_finish_dynamic_symbol
656 to traverse all GOT entries for a particular symbol.
657
658 ??? We could've used root.got.glist field instead, but having
659 a separate field is cleaner. */
660 struct elf_m68k_got_entry *glist;
252b5132
RH		 661};
662
0cca5f05
AS		 663#define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
664
7fb9f789
NC		 665/* Key part of GOT entry in hashtable. */
666struct elf_m68k_got_entry_key
667{
668 /* BFD in which this symbol was defined. NULL for global symbols. */
669 const bfd *bfd;
670
671 /* Symbol index. Either local symbol index or h->got_entry_key. */
672 unsigned long symndx;
cf869cce
NC		 673
674 /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32},
675 R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}.
676
677 From perspective of hashtable key, only elf_m68k_got_reloc_type (type)
678 matters. That is, we distinguish between, say, R_68K_GOT16O
679 and R_68K_GOT32O when allocating offsets, but they are considered to be
680 the same when searching got->entries. */
681 enum elf_m68k_reloc_type type;
7fb9f789
NC		 682};
683
cf869cce
NC		 684/* Size of the GOT offset suitable for relocation. */
685enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST };
686
7fb9f789
NC		 687/* Entry of the GOT. */
688struct elf_m68k_got_entry
689{
690 /* GOT entries are put into a got->entries hashtable. This is the key. */
691 struct elf_m68k_got_entry_key key_;
692
693 /* GOT entry data. We need s1 before offset finalization and s2 after. */
694 union
695 {
696 struct
697 {
5c3261b0 698 /* Number of times this entry is referenced. */
7fb9f789 699 bfd_vma refcount;
7fb9f789
NC		 700 } s1;
701
702 struct
703 {
704 /* Offset from the start of .got section. To calculate offset relative
de194d85 705 to GOT pointer one should subtract got->offset from this value. */
7fb9f789
NC		 706 bfd_vma offset;
707
708 /* Pointer to the next GOT entry for this global symbol.
709 Symbols have at most one entry in one GOT, but might
710 have entries in more than one GOT.
711 Root of this list is h->glist.
712 NULL for local symbols. */
713 struct elf_m68k_got_entry *next;
714 } s2;
715 } u;
716};
717
cf869cce
NC		 718/* Return representative type for relocation R_TYPE.
719 This is used to avoid enumerating many relocations in comparisons,
720 switches etc. */
721
722static enum elf_m68k_reloc_type
723elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type)
724{
725 switch (r_type)
726 {
727 /* In most cases R_68K_GOTx relocations require the very same
728 handling as R_68K_GOT32O relocation. In cases when we need
729 to distinguish between the two, we use explicitly compare against
730 r_type. */
731 case R_68K_GOT32:
732 case R_68K_GOT16:
733 case R_68K_GOT8:
734 case R_68K_GOT32O:
735 case R_68K_GOT16O:
736 case R_68K_GOT8O:
737 return R_68K_GOT32O;
738
739 case R_68K_TLS_GD32:
740 case R_68K_TLS_GD16:
741 case R_68K_TLS_GD8:
742 return R_68K_TLS_GD32;
743
744 case R_68K_TLS_LDM32:
745 case R_68K_TLS_LDM16:
746 case R_68K_TLS_LDM8:
747 return R_68K_TLS_LDM32;
748
749 case R_68K_TLS_IE32:
750 case R_68K_TLS_IE16:
751 case R_68K_TLS_IE8:
752 return R_68K_TLS_IE32;
753
754 default:
755 BFD_ASSERT (FALSE);
756 return 0;
757 }
758}
759
760/* Return size of the GOT entry offset for relocation R_TYPE. */
761
762static enum elf_m68k_got_offset_size
763elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type)
764{
765 switch (r_type)
766 {
767 case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8:
768 case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32:
769 case R_68K_TLS_IE32:
770 return R_32;
771
772 case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16:
773 case R_68K_TLS_IE16:
774 return R_16;
775
776 case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8:
777 case R_68K_TLS_IE8:
778 return R_8;
779
780 default:
781 BFD_ASSERT (FALSE);
782 return 0;
783 }
784}
785
786/* Return number of GOT entries we need to allocate in GOT for
787 relocation R_TYPE. */
788
789static bfd_vma
790elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type)
791{
792 switch (elf_m68k_reloc_got_type (r_type))
793 {
794 case R_68K_GOT32O:
795 case R_68K_TLS_IE32:
796 return 1;
797
798 case R_68K_TLS_GD32:
799 case R_68K_TLS_LDM32:
800 return 2;
801
802 default:
803 BFD_ASSERT (FALSE);
804 return 0;
805 }
806}
807
808/* Return TRUE if relocation R_TYPE is a TLS one. */
809
810static bfd_boolean
811elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type)
812{
813 switch (r_type)
814 {
815 case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8:
816 case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8:
817 case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8:
818 case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8:
819 case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8:
820 case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32:
821 return TRUE;
822
823 default:
824 return FALSE;
825 }
826}
827
7fb9f789
NC		 828/* Data structure representing a single GOT. */
829struct elf_m68k_got
830{
831 /* Hashtable of 'struct elf_m68k_got_entry's.
832 Starting size of this table is the maximum number of
833 R_68K_GOT8O entries. */
834 htab_t entries;
835
cf869cce
NC		 836 /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require
837 several GOT slots.
7fb9f789 838
cf869cce
NC		 839 n_slots[R_8] is the count of R_8 slots in this GOT.
840 n_slots[R_16] is the cumulative count of R_8 and R_16 slots
841 in this GOT.
842 n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots
843 in this GOT. This is the total number of slots. */
844 bfd_vma n_slots[R_LAST];
7fb9f789 845
cf869cce 846 /* Number of local (entry->key_.h == NULL) slots in this GOT.
7fb9f789
NC		 847 This is only used to properly calculate size of .rela.got section;
848 see elf_m68k_partition_multi_got. */
cf869cce 849 bfd_vma local_n_slots;
7fb9f789
NC		 850
851 /* Offset of this GOT relative to beginning of .got section. */
852 bfd_vma offset;
853};
854
855/* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
856struct elf_m68k_bfd2got_entry
857{
858 /* BFD. */
859 const bfd *bfd;
860
861 /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
862 GOT structure. After partitioning several BFD's might [and often do]
863 share a single GOT. */
864 struct elf_m68k_got *got;
865};
866
867/* The main data structure holding all the pieces. */
868struct elf_m68k_multi_got
869{
870 /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
871 here, then it doesn't need a GOT (this includes the case of a BFD
872 having an empty GOT).
873
874 ??? This hashtable can be replaced by an array indexed by bfd->id. */
875 htab_t bfd2got;
876
877 /* Next symndx to assign a global symbol.
878 h->got_entry_key is initialized from this counter. */
879 unsigned long global_symndx;
880};
881
252b5132
RH		 882/* m68k ELF linker hash table. */
883
884struct elf_m68k_link_hash_table
885{
886 struct elf_link_hash_table root;
b6152c34 887
87d72d41
AM		 888 /* Small local sym cache. */
889 struct sym_cache sym_cache;
cc3e26be
RS		 890
891 /* The PLT format used by this link, or NULL if the format has not
892 yet been chosen. */
893 const struct elf_m68k_plt_info *plt_info;
7fb9f789
NC		 894
895 /* True, if GP is loaded within each function which uses it.
896 Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
897 bfd_boolean local_gp_p;
898
899 /* Switch controlling use of negative offsets to double the size of GOTs. */
900 bfd_boolean use_neg_got_offsets_p;
901
902 /* Switch controlling generation of multiple GOTs. */
903 bfd_boolean allow_multigot_p;
904
905 /* Multi-GOT data structure. */
906 struct elf_m68k_multi_got multi_got_;
252b5132
RH		 907};
908
252b5132
RH		 909/* Get the m68k ELF linker hash table from a link_info structure. */
910
911#define elf_m68k_hash_table(p) \
4dfe6ac6
NC		 912 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
913 == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL)
252b5132 914
7fb9f789
NC		 915/* Shortcut to multi-GOT data. */
916#define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
917
252b5132
RH		 918/* Create an entry in an m68k ELF linker hash table. */
919
920static struct bfd_hash_entry *
4dfe6ac6
NC		 921elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry,
922 struct bfd_hash_table *table,
923 const char *string)
252b5132 924{
0cca5f05 925 struct bfd_hash_entry *ret = entry;
252b5132
RH		 926
927 /* Allocate the structure if it has not already been allocated by a
928 subclass. */
0cca5f05
AS		 929 if (ret == NULL)
930 ret = bfd_hash_allocate (table,
931 sizeof (struct elf_m68k_link_hash_entry));
932 if (ret == NULL)
933 return ret;
252b5132
RH		 934
935 /* Call the allocation method of the superclass. */
0cca5f05
AS		 936 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
937 if (ret != NULL)
7fb9f789
NC		 938 {
939 elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
940 elf_m68k_hash_entry (ret)->got_entry_key = 0;
941 elf_m68k_hash_entry (ret)->glist = NULL;
942 }
252b5132 943
0cca5f05 944 return ret;
252b5132
RH		 945}
946
68faa637
AM		 947/* Destroy an m68k ELF linker hash table. */
948
949static void
d495ab0d 950elf_m68k_link_hash_table_free (bfd *obfd)
68faa637
AM		 951{
952 struct elf_m68k_link_hash_table *htab;
953
d495ab0d 954 htab = (struct elf_m68k_link_hash_table *) obfd->link.hash;
68faa637
AM		 955
956 if (htab->multi_got_.bfd2got != NULL)
957 {
958 htab_delete (htab->multi_got_.bfd2got);
959 htab->multi_got_.bfd2got = NULL;
960 }
d495ab0d 961 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 962}
963
252b5132
RH		 964/* Create an m68k ELF linker hash table. */
965
966static struct bfd_link_hash_table *
4dfe6ac6 967elf_m68k_link_hash_table_create (bfd *abfd)
252b5132
RH		 968{
969 struct elf_m68k_link_hash_table *ret;
dc810e39 970 bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
252b5132 971
7bf52ea2 972 ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt);
252b5132
RH		 973 if (ret == (struct elf_m68k_link_hash_table *) NULL)
974 return NULL;
975
66eb6687
AM		 976 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
977 elf_m68k_link_hash_newfunc,
4dfe6ac6
NC		 978 sizeof (struct elf_m68k_link_hash_entry),
979 M68K_ELF_DATA))
252b5132 980 {
e2d34d7d 981 free (ret);
252b5132
RH		 982 return NULL;
983 }
d495ab0d 984 ret->root.root.hash_table_free = elf_m68k_link_hash_table_free;
252b5132 985
7fb9f789 986 ret->multi_got_.global_symndx = 1;
b6152c34 987
252b5132
RH		 988 return &ret->root.root;
989}
990
266abb8f
NS		 991/* Set the right machine number. */
992
993static bfd_boolean
994elf32_m68k_object_p (bfd *abfd)
995{
996 unsigned int mach = 0;
997 unsigned features = 0;
998 flagword eflags = elf_elfheader (abfd)->e_flags;
999
425c6cb0 1000 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
266abb8f 1001 features |= m68000;
425c6cb0 1002 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
3bdcfdf4
KH		 1003 features |= cpu32;
1004 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1005 features |= fido_a;
425c6cb0 1006 else
266abb8f 1007 {
c694fd50 1008 switch (eflags & EF_M68K_CF_ISA_MASK)
266abb8f 1009 {
c694fd50 1010 case EF_M68K_CF_ISA_A_NODIV:
266abb8f
NS		 1011 features |= mcfisa_a;
1012 break;
c694fd50 1013 case EF_M68K_CF_ISA_A:
0b2e31dc
NS		 1014 features |= mcfisa_a|mcfhwdiv;
1015 break;
c694fd50 1016 case EF_M68K_CF_ISA_A_PLUS:
0b2e31dc
NS		 1017 features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
1018 break;
c694fd50 1019 case EF_M68K_CF_ISA_B_NOUSP:
0b2e31dc
NS		 1020 features |= mcfisa_a|mcfisa_b|mcfhwdiv;
1021 break;
c694fd50 1022 case EF_M68K_CF_ISA_B:
0b2e31dc
NS		 1023 features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
1024 break;
9a2e615a
NS		 1025 case EF_M68K_CF_ISA_C:
1026 features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
1027 break;
8d100c32
KH		 1028 case EF_M68K_CF_ISA_C_NODIV:
1029 features |= mcfisa_a|mcfisa_c|mcfusp;
1030 break;
266abb8f 1031 }
c694fd50 1032 switch (eflags & EF_M68K_CF_MAC_MASK)
266abb8f 1033 {
c694fd50 1034 case EF_M68K_CF_MAC:
266abb8f
NS		 1035 features |= mcfmac;
1036 break;
c694fd50 1037 case EF_M68K_CF_EMAC:
266abb8f
NS		 1038 features |= mcfemac;
1039 break;
1040 }
c694fd50 1041 if (eflags & EF_M68K_CF_FLOAT)
266abb8f
NS		 1042 features |= cfloat;
1043 }
1044
1045 mach = bfd_m68k_features_to_mach (features);
1046 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
1047
1048 return TRUE;
1049}
1050
fc9f1df9
NC		 1051/* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag
1052 field based on the machine number. */
1053
1054static void
1055elf_m68k_final_write_processing (bfd *abfd,
1056 bfd_boolean linker ATTRIBUTE_UNUSED)
1057{
1058 int mach = bfd_get_mach (abfd);
1059 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
1060
1061 if (!e_flags)
1062 {
1063 unsigned int arch_mask;
1064
1065 arch_mask = bfd_m68k_mach_to_features (mach);
1066
1067 if (arch_mask & m68000)
1068 e_flags = EF_M68K_M68000;
1069 else if (arch_mask & cpu32)
1070 e_flags = EF_M68K_CPU32;
1071 else if (arch_mask & fido_a)
1072 e_flags = EF_M68K_FIDO;
1073 else
1074 {
1075 switch (arch_mask
1076 & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp))
1077 {
1078 case mcfisa_a:
1079 e_flags |= EF_M68K_CF_ISA_A_NODIV;
1080 break;
1081 case mcfisa_a | mcfhwdiv:
1082 e_flags |= EF_M68K_CF_ISA_A;
1083 break;
1084 case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp:
1085 e_flags |= EF_M68K_CF_ISA_A_PLUS;
1086 break;
1087 case mcfisa_a | mcfisa_b | mcfhwdiv:
1088 e_flags |= EF_M68K_CF_ISA_B_NOUSP;
1089 break;
1090 case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp:
1091 e_flags |= EF_M68K_CF_ISA_B;
1092 break;
1093 case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp:
1094 e_flags |= EF_M68K_CF_ISA_C;
1095 break;
1096 case mcfisa_a | mcfisa_c | mcfusp:
1097 e_flags |= EF_M68K_CF_ISA_C_NODIV;
1098 break;
1099 }
1100 if (arch_mask & mcfmac)
1101 e_flags |= EF_M68K_CF_MAC;
1102 else if (arch_mask & mcfemac)
1103 e_flags |= EF_M68K_CF_EMAC;
1104 if (arch_mask & cfloat)
1105 e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
1106 }
1107 elf_elfheader (abfd)->e_flags = e_flags;
1108 }
1109}
1110
ae9a127f 1111/* Keep m68k-specific flags in the ELF header. */
fc9f1df9 1112
b34976b6 1113static bfd_boolean
2c3fc389 1114elf32_m68k_set_private_flags (bfd *abfd, flagword flags)
9e1281c7
CM		 1115{
1116 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM		 1117 elf_flags_init (abfd) = TRUE;
1118 return TRUE;
9e1281c7
CM		 1119}
1120
9e1281c7
CM		 1121/* Merge backend specific data from an object file to the output
1122 object file when linking. */
b34976b6 1123static bfd_boolean
50e03d47 1124elf32_m68k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
9e1281c7 1125{
50e03d47 1126 bfd *obfd = info->output_bfd;
9e1281c7
CM		 1127 flagword out_flags;
1128 flagword in_flags;
a9d34880
RS		 1129 flagword out_isa;
1130 flagword in_isa;
1131 const bfd_arch_info_type *arch_info;
7fb9f789 1132
9e1281c7
CM		 1133 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1134 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
266abb8f
NS		 1135 return FALSE;
1136
a9d34880
RS		 1137 /* Get the merged machine. This checks for incompatibility between
1138 Coldfire & non-Coldfire flags, incompability between different
1139 Coldfire ISAs, and incompability between different MAC types. */
1140 arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
1141 if (!arch_info)
1142 return FALSE;
9e1281c7 1143
7fb9f789
NC		 1144 bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
1145
1146 in_flags = elf_elfheader (ibfd)->e_flags;
1147 if (!elf_flags_init (obfd))
1148 {
1149 elf_flags_init (obfd) = TRUE;
1150 out_flags = in_flags;
1151 }
1152 else
1153 {
1154 out_flags = elf_elfheader (obfd)->e_flags;
1155 unsigned int variant_mask;
1156
1157 if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1158 variant_mask = 0;
1159 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1160 variant_mask = 0;
1161 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1162 variant_mask = 0;
1163 else
1164 variant_mask = EF_M68K_CF_ISA_MASK;
1165
1166 in_isa = (in_flags & variant_mask);
1167 out_isa = (out_flags & variant_mask);
1168 if (in_isa > out_isa)
1169 out_flags ^= in_isa ^ out_isa;
1170 if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
1171 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1172 || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
1173 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
1174 out_flags = EF_M68K_FIDO;
1175 else
1176 out_flags |= in_flags ^ in_isa;
1177 }
1178 elf_elfheader (obfd)->e_flags = out_flags;
1179
1180 return TRUE;
1181}
1182
1183/* Display the flags field. */
1184
1185static bfd_boolean
1186elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr)
1187{
1188 FILE *file = (FILE *) ptr;
1189 flagword eflags = elf_elfheader (abfd)->e_flags;
1190
1191 BFD_ASSERT (abfd != NULL && ptr != NULL);
1192
1193 /* Print normal ELF private data. */
1194 _bfd_elf_print_private_bfd_data (abfd, ptr);
1195
1196 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
1197
1198 /* xgettext:c-format */
1199 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
1200
1201 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1202 fprintf (file, " [m68000]");
1203 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1204 fprintf (file, " [cpu32]");
1205 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1206 fprintf (file, " [fido]");
1207 else
1208 {
1209 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
1210 fprintf (file, " [cfv4e]");
1211
1212 if (eflags & EF_M68K_CF_ISA_MASK)
1213 {
1214 char const *isa = _("unknown");
1215 char const *mac = _("unknown");
1216 char const *additional = "";
1217
1218 switch (eflags & EF_M68K_CF_ISA_MASK)
1219 {
1220 case EF_M68K_CF_ISA_A_NODIV:
1221 isa = "A";
1222 additional = " [nodiv]";
1223 break;
1224 case EF_M68K_CF_ISA_A:
1225 isa = "A";
1226 break;
1227 case EF_M68K_CF_ISA_A_PLUS:
1228 isa = "A+";
1229 break;
1230 case EF_M68K_CF_ISA_B_NOUSP:
1231 isa = "B";
1232 additional = " [nousp]";
1233 break;
1234 case EF_M68K_CF_ISA_B:
1235 isa = "B";
1236 break;
1237 case EF_M68K_CF_ISA_C:
1238 isa = "C";
1239 break;
1240 case EF_M68K_CF_ISA_C_NODIV:
1241 isa = "C";
1242 additional = " [nodiv]";
1243 break;
1244 }
1245 fprintf (file, " [isa %s]%s", isa, additional);
1246
1247 if (eflags & EF_M68K_CF_FLOAT)
1248 fprintf (file, " [float]");
1249
1250 switch (eflags & EF_M68K_CF_MAC_MASK)
1251 {
1252 case 0:
1253 mac = NULL;
1254 break;
1255 case EF_M68K_CF_MAC:
1256 mac = "mac";
1257 break;
1258 case EF_M68K_CF_EMAC:
1259 mac = "emac";
1260 break;
f608cd77
NS		 1261 case EF_M68K_CF_EMAC_B:
1262 mac = "emac_b";
1263 break;
7fb9f789
NC		 1264 }
1265 if (mac)
1266 fprintf (file, " [%s]", mac);
1267 }
1268 }
1269
1270 fputc ('\n', file);
1271
1272 return TRUE;
1273}
1274
1275/* Multi-GOT support implementation design:
1276
1277 Multi-GOT starts in check_relocs hook. There we scan all
1278 relocations of a BFD and build a local GOT (struct elf_m68k_got)
1279 for it. If a single BFD appears to require too many GOT slots with
1280 R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
1281 to user.
1282 After check_relocs has been invoked for each input BFD, we have
1283 constructed a GOT for each input BFD.
1284
1285 To minimize total number of GOTs required for a particular output BFD
1286 (as some environments support only 1 GOT per output object) we try
1287 to merge some of the GOTs to share an offset space. Ideally [and in most
1288 cases] we end up with a single GOT. In cases when there are too many
1289 restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
1290 several GOTs, assuming the environment can handle them.
1291
1292 Partitioning is done in elf_m68k_partition_multi_got. We start with
1293 an empty GOT and traverse bfd2got hashtable putting got_entries from
1294 local GOTs to the new 'big' one. We do that by constructing an
1295 intermediate GOT holding all the entries the local GOT has and the big
1296 GOT lacks. Then we check if there is room in the big GOT to accomodate
1297 all the entries from diff. On success we add those entries to the big
1298 GOT; on failure we start the new 'big' GOT and retry the adding of
1299 entries from the local GOT. Note that this retry will always succeed as
1300 each local GOT doesn't overflow the limits. After partitioning we
1301 end up with each bfd assigned one of the big GOTs. GOT entries in the
1302 big GOTs are initialized with GOT offsets. Note that big GOTs are
1303 positioned consequently in program space and represent a single huge GOT
1304 to the outside world.
1305
1306 After that we get to elf_m68k_relocate_section. There we
1307 adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
1308 relocations to refer to appropriate [assigned to current input_bfd]
1309 big GOT.
1310
1311 Notes:
1312
cf869cce
NC		 1313 GOT entry type: We have several types of GOT entries.
1314 * R_8 type is used in entries for symbols that have at least one
1315 R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40
7fb9f789 1316 such entries in one GOT.
cf869cce
NC		 1317 * R_16 type is used in entries for symbols that have at least one
1318 R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations.
7fb9f789 1319 We can have at most 0x4000 such entries in one GOT.
cf869cce
NC		 1320 * R_32 type is used in all other cases. We can have as many
1321 such entries in one GOT as we'd like.
7fb9f789
NC		 1322 When counting relocations we have to include the count of the smaller
1323 ranged relocations in the counts of the larger ranged ones in order
1324 to correctly detect overflow.
1325
1326 Sorting the GOT: In each GOT starting offsets are assigned to
cf869cce
NC		 1327 R_8 entries, which are followed by R_16 entries, and
1328 R_32 entries go at the end. See finalize_got_offsets for details.
7fb9f789
NC		 1329
1330 Negative GOT offsets: To double usable offset range of GOTs we use
1331 negative offsets. As we assign entries with GOT offsets relative to
1332 start of .got section, the offset values are positive. They become
1333 negative only in relocate_section where got->offset value is
1334 subtracted from them.
1335
1336 3 special GOT entries: There are 3 special GOT entries used internally
1337 by loader. These entries happen to be placed to .got.plt section,
1338 so we don't do anything about them in multi-GOT support.
1339
1340 Memory management: All data except for hashtables
1341 multi_got->bfd2got and got->entries are allocated on
1342 elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
1343 to most functions), so we don't need to care to free them. At the
1344 moment of allocation hashtables are being linked into main data
1345 structure (multi_got), all pieces of which are reachable from
1346 elf_m68k_multi_got (info). We deallocate them in
1347 elf_m68k_link_hash_table_free. */
1348
1349/* Initialize GOT. */
1350
1351static void
cf869cce
NC		 1352elf_m68k_init_got (struct elf_m68k_got *got)
1353{
1354 got->entries = NULL;
1355 got->n_slots[R_8] = 0;
1356 got->n_slots[R_16] = 0;
1357 got->n_slots[R_32] = 0;
1358 got->local_n_slots = 0;
1359 got->offset = (bfd_vma) -1;
7fb9f789
NC		 1360}
1361
1362/* Destruct GOT. */
1363
1364static void
1365elf_m68k_clear_got (struct elf_m68k_got *got)
1366{
1367 if (got->entries != NULL)
1368 {
1369 htab_delete (got->entries);
1370 got->entries = NULL;
1371 }
1372}
1373
1374/* Create and empty GOT structure. INFO is the context where memory
1375 should be allocated. */
1376
1377static struct elf_m68k_got *
1378elf_m68k_create_empty_got (struct bfd_link_info *info)
1379{
1380 struct elf_m68k_got *got;
1381
1382 got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got));
1383 if (got == NULL)
1384 return NULL;
1385
cf869cce 1386 elf_m68k_init_got (got);
7fb9f789
NC		 1387
1388 return got;
1389}
1390
1391/* Initialize KEY. */
1392
1393static void
1394elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key,
1395 struct elf_link_hash_entry *h,
cf869cce
NC		 1396 const bfd *abfd, unsigned long symndx,
1397 enum elf_m68k_reloc_type reloc_type)
7fb9f789 1398{
cf869cce
NC		 1399 if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32)
1400 /* All TLS_LDM relocations share a single GOT entry. */
1401 {
1402 key->bfd = NULL;
1403 key->symndx = 0;
1404 }
1405 else if (h != NULL)
1406 /* Global symbols are identified with their got_entry_key. */
7fb9f789
NC		 1407 {
1408 key->bfd = NULL;
1409 key->symndx = elf_m68k_hash_entry (h)->got_entry_key;
1410 BFD_ASSERT (key->symndx != 0);
1411 }
1412 else
cf869cce 1413 /* Local symbols are identified by BFD they appear in and symndx. */
7fb9f789
NC		 1414 {
1415 key->bfd = abfd;
1416 key->symndx = symndx;
1417 }
cf869cce
NC		 1418
1419 key->type = reloc_type;
7fb9f789
NC		 1420}
1421
1422/* Calculate hash of got_entry.
1423 ??? Is it good? */
1424
1425static hashval_t
1426elf_m68k_got_entry_hash (const void *_entry)
1427{
1428 const struct elf_m68k_got_entry_key *key;
1429
1430 key = &((const struct elf_m68k_got_entry *) _entry)->key_;
1431
cf869cce
NC		 1432 return (key->symndx
1433 + (key->bfd != NULL ? (int) key->bfd->id : -1)
1434 + elf_m68k_reloc_got_type (key->type));
7fb9f789
NC		 1435}
1436
1437/* Check if two got entries are equal. */
1438
1439static int
1440elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2)
1441{
1442 const struct elf_m68k_got_entry_key *key1;
1443 const struct elf_m68k_got_entry_key *key2;
1444
1445 key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_;
1446 key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_;
1447
1448 return (key1->bfd == key2->bfd
cf869cce
NC		 1449 && key1->symndx == key2->symndx
1450 && (elf_m68k_reloc_got_type (key1->type)
1451 == elf_m68k_reloc_got_type (key2->type)));
7fb9f789
NC		 1452}
1453
cf869cce
NC		 1454/* When using negative offsets, we allocate one extra R_8, one extra R_16
1455 and one extra R_32 slots to simplify handling of 2-slot entries during
1456 offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */
1457
1458/* Maximal number of R_8 slots in a single GOT. */
1459#define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \
7fb9f789 1460 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
cf869cce 1461 ? (0x40 - 1) \
7fb9f789
NC		 1462 : 0x20)
1463
cf869cce
NC		 1464/* Maximal number of R_8 and R_16 slots in a single GOT. */
1465#define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \
7fb9f789 1466 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
cf869cce 1467 ? (0x4000 - 2) \
7fb9f789
NC		 1468 : 0x2000)
1469
1470/* SEARCH - simply search the hashtable, don't insert new entries or fail when
1471 the entry cannot be found.
1472 FIND_OR_CREATE - search for an existing entry, but create new if there's
1473 no such.
1474 MUST_FIND - search for an existing entry and assert that it exist.
1475 MUST_CREATE - assert that there's no such entry and create new one. */
1476enum elf_m68k_get_entry_howto
1477 {
1478 SEARCH,
1479 FIND_OR_CREATE,
1480 MUST_FIND,
1481 MUST_CREATE
1482 };
1483
1484/* Get or create (depending on HOWTO) entry with KEY in GOT.
1485 INFO is context in which memory should be allocated (can be NULL if
1486 HOWTO is SEARCH or MUST_FIND). */
1487
1488static struct elf_m68k_got_entry *
1489elf_m68k_get_got_entry (struct elf_m68k_got *got,
1490 const struct elf_m68k_got_entry_key *key,
1491 enum elf_m68k_get_entry_howto howto,
1492 struct bfd_link_info *info)
1493{
1494 struct elf_m68k_got_entry entry_;
1495 struct elf_m68k_got_entry *entry;
1496 void **ptr;
1497
1498 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1499
1500 if (got->entries == NULL)
1501 /* This is the first entry in ABFD. Initialize hashtable. */
1502 {
1503 if (howto == SEARCH)
1504 return NULL;
1505
cf869cce 1506 got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT
7fb9f789
NC		 1507 (info),
1508 elf_m68k_got_entry_hash,
1509 elf_m68k_got_entry_eq, NULL);
1510 if (got->entries == NULL)
1511 {
1512 bfd_set_error (bfd_error_no_memory);
1513 return NULL;
1514 }
1515 }
1516
1517 entry_.key_ = *key;
1518 ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH
1519 ? INSERT : NO_INSERT));
1520 if (ptr == NULL)
1521 {
1522 if (howto == SEARCH)
1523 /* Entry not found. */
1524 return NULL;
1525
1526 /* We're out of memory. */
1527 bfd_set_error (bfd_error_no_memory);
1528 return NULL;
1529 }
1530
1531 if (*ptr == NULL)
1532 /* We didn't find the entry and we're asked to create a new one. */
1533 {
1534 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1535
1536 entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry));
1537 if (entry == NULL)
1538 return NULL;
1539
1540 /* Initialize new entry. */
1541 entry->key_ = *key;
1542
1543 entry->u.s1.refcount = 0;
cf869cce
NC		 1544
1545 /* Mark the entry as not initialized. */
1546 entry->key_.type = R_68K_max;
7fb9f789
NC		 1547
1548 *ptr = entry;
1549 }
1550 else
1551 /* We found the entry. */
1552 {
1553 BFD_ASSERT (howto != MUST_CREATE);
1554
1555 entry = *ptr;
1556 }
1557
1558 return entry;
1559}
1560
1561/* Update GOT counters when merging entry of WAS type with entry of NEW type.
1562 Return the value to which ENTRY's type should be set. */
1563
cf869cce
NC		 1564static enum elf_m68k_reloc_type
1565elf_m68k_update_got_entry_type (struct elf_m68k_got *got,
1566 enum elf_m68k_reloc_type was,
d3ce72d0 1567 enum elf_m68k_reloc_type new_reloc)
7fb9f789 1568{
cf869cce
NC		 1569 enum elf_m68k_got_offset_size was_size;
1570 enum elf_m68k_got_offset_size new_size;
1571 bfd_vma n_slots;
1572
1573 if (was == R_68K_max)
1574 /* The type of the entry is not initialized yet. */
7fb9f789 1575 {
cf869cce
NC		 1576 /* Update all got->n_slots counters, including n_slots[R_32]. */
1577 was_size = R_LAST;
7fb9f789 1578
d3ce72d0 1579 was = new_reloc;
7fb9f789 1580 }
7fb9f789 1581 else
cf869cce
NC		 1582 {
1583 /* !!! We, probably, should emit an error rather then fail on assert
1584 in such a case. */
1585 BFD_ASSERT (elf_m68k_reloc_got_type (was)
d3ce72d0 1586 == elf_m68k_reloc_got_type (new_reloc));
cf869cce
NC		 1587
1588 was_size = elf_m68k_reloc_got_offset_size (was);
1589 }
1590
d3ce72d0
NC		 1591 new_size = elf_m68k_reloc_got_offset_size (new_reloc);
1592 n_slots = elf_m68k_reloc_got_n_slots (new_reloc);
cf869cce
NC		 1593
1594 while (was_size > new_size)
1595 {
1596 --was_size;
1597 got->n_slots[was_size] += n_slots;
1598 }
7fb9f789 1599
d3ce72d0 1600 if (new_reloc > was)
cf869cce
NC		 1601 /* Relocations are ordered from bigger got offset size to lesser,
1602 so choose the relocation type with lesser offset size. */
d3ce72d0 1603 was = new_reloc;
cf869cce
NC		 1604
1605 return was;
7fb9f789
NC		 1606}
1607
7fb9f789
NC		 1608/* Add new or update existing entry to GOT.
1609 H, ABFD, TYPE and SYMNDX is data for the entry.
1610 INFO is a context where memory should be allocated. */
1611
1612static struct elf_m68k_got_entry *
1613elf_m68k_add_entry_to_got (struct elf_m68k_got *got,
1614 struct elf_link_hash_entry *h,
1615 const bfd *abfd,
cf869cce
NC		 1616 enum elf_m68k_reloc_type reloc_type,
1617 unsigned long symndx,
7fb9f789
NC		 1618 struct bfd_link_info *info)
1619{
1620 struct elf_m68k_got_entry_key key_;
1621 struct elf_m68k_got_entry *entry;
1622
1623 if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0)
1624 elf_m68k_hash_entry (h)->got_entry_key
1625 = elf_m68k_multi_got (info)->global_symndx++;
1626
cf869cce 1627 elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type);
7fb9f789
NC		 1628
1629 entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info);
1630 if (entry == NULL)
1631 return NULL;
1632
cf869cce
NC		 1633 /* Determine entry's type and update got->n_slots counters. */
1634 entry->key_.type = elf_m68k_update_got_entry_type (got,
1635 entry->key_.type,
1636 reloc_type);
1637
7fb9f789
NC		 1638 /* Update refcount. */
1639 ++entry->u.s1.refcount;
1640
1641 if (entry->u.s1.refcount == 1)
1642 /* We see this entry for the first time. */
1643 {
1644 if (entry->key_.bfd != NULL)
cf869cce 1645 got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type);
7fb9f789
NC		 1646 }
1647
cf869cce 1648 BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots);
7fb9f789 1649
cf869cce
NC		 1650 if ((got->n_slots[R_8]
1651 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1652 || (got->n_slots[R_16]
1653 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
7fb9f789
NC		 1654 /* This BFD has too many relocation. */
1655 {
cf869cce 1656 if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
695344c0 1657 /* xgettext:c-format */
871b3ab2 1658 _bfd_error_handler (_("%pB: GOT overflow: "
38f14ab8 1659 "number of relocations with 8-bit "
4eca0228
AM		 1660 "offset > %d"),
1661 abfd,
1662 ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info));
7fb9f789 1663 else
695344c0 1664 /* xgettext:c-format */
871b3ab2 1665 _bfd_error_handler (_("%pB: GOT overflow: "
38f14ab8 1666 "number of relocations with 8- or 16-bit "
4eca0228
AM		 1667 "offset > %d"),
1668 abfd,
1669 ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info));
7fb9f789
NC		 1670
1671 return NULL;
1672 }
1673
1674 return entry;
1675}
1676
1677/* Compute the hash value of the bfd in a bfd2got hash entry. */
1678
1679static hashval_t
1680elf_m68k_bfd2got_entry_hash (const void *entry)
1681{
1682 const struct elf_m68k_bfd2got_entry *e;
1683
1684 e = (const struct elf_m68k_bfd2got_entry *) entry;
1685
1686 return e->bfd->id;
1687}
1688
1689/* Check whether two hash entries have the same bfd. */
1690
1691static int
1692elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2)
1693{
1694 const struct elf_m68k_bfd2got_entry *e1;
1695 const struct elf_m68k_bfd2got_entry *e2;
1696
1697 e1 = (const struct elf_m68k_bfd2got_entry *) entry1;
1698 e2 = (const struct elf_m68k_bfd2got_entry *) entry2;
1699
1700 return e1->bfd == e2->bfd;
1701}
1702
1703/* Destruct a bfd2got entry. */
1704
1705static void
1706elf_m68k_bfd2got_entry_del (void *_entry)
1707{
1708 struct elf_m68k_bfd2got_entry *entry;
1709
1710 entry = (struct elf_m68k_bfd2got_entry *) _entry;
1711
1712 BFD_ASSERT (entry->got != NULL);
1713 elf_m68k_clear_got (entry->got);
1714}
1715
1716/* Find existing or create new (depending on HOWTO) bfd2got entry in
1717 MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1718 memory should be allocated. */
1719
1720static struct elf_m68k_bfd2got_entry *
1721elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got,
1722 const bfd *abfd,
1723 enum elf_m68k_get_entry_howto howto,
1724 struct bfd_link_info *info)
1725{
1726 struct elf_m68k_bfd2got_entry entry_;
1727 void **ptr;
1728 struct elf_m68k_bfd2got_entry *entry;
1729
1730 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1731
1732 if (multi_got->bfd2got == NULL)
1733 /* This is the first GOT. Initialize bfd2got. */
1734 {
1735 if (howto == SEARCH)
1736 return NULL;
1737
1738 multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash,
1739 elf_m68k_bfd2got_entry_eq,
1740 elf_m68k_bfd2got_entry_del);
1741 if (multi_got->bfd2got == NULL)
1742 {
1743 bfd_set_error (bfd_error_no_memory);
1744 return NULL;
1745 }
1746 }
1747
1748 entry_.bfd = abfd;
1749 ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH
1750 ? INSERT : NO_INSERT));
1751 if (ptr == NULL)
1752 {
1753 if (howto == SEARCH)
1754 /* Entry not found. */
1755 return NULL;
1756
1757 /* We're out of memory. */
1758 bfd_set_error (bfd_error_no_memory);
1759 return NULL;
1760 }
1761
1762 if (*ptr == NULL)
1763 /* Entry was not found. Create new one. */
1764 {
1765 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1766
1767 entry = ((struct elf_m68k_bfd2got_entry *)
1768 bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)));
1769 if (entry == NULL)
1770 return NULL;
1771
1772 entry->bfd = abfd;
1773
1774 entry->got = elf_m68k_create_empty_got (info);
1775 if (entry->got == NULL)
1776 return NULL;
1777
1778 *ptr = entry;
1779 }
1780 else
1781 {
1782 BFD_ASSERT (howto != MUST_CREATE);
1783
1784 /* Return existing entry. */
1785 entry = *ptr;
1786 }
1787
1788 return entry;
1789}
1790
1791struct elf_m68k_can_merge_gots_arg
1792{
1793 /* A current_got that we constructing a DIFF against. */
1794 struct elf_m68k_got *big;
1795
1796 /* GOT holding entries not present or that should be changed in
1797 BIG. */
1798 struct elf_m68k_got *diff;
1799
1800 /* Context where to allocate memory. */
1801 struct bfd_link_info *info;
1802
1803 /* Error flag. */
1804 bfd_boolean error_p;
1805};
1806
1807/* Process a single entry from the small GOT to see if it should be added
1808 or updated in the big GOT. */
1809
1810static int
1811elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg)
1812{
1813 const struct elf_m68k_got_entry *entry1;
1814 struct elf_m68k_can_merge_gots_arg *arg;
1815 const struct elf_m68k_got_entry *entry2;
cf869cce 1816 enum elf_m68k_reloc_type type;
7fb9f789
NC		 1817
1818 entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr;
1819 arg = (struct elf_m68k_can_merge_gots_arg *) _arg;
1820
1821 entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL);
1822
1823 if (entry2 != NULL)
cf869cce 1824 /* We found an existing entry. Check if we should update it. */
7fb9f789 1825 {
cf869cce
NC		 1826 type = elf_m68k_update_got_entry_type (arg->diff,
1827 entry2->key_.type,
1828 entry1->key_.type);
7fb9f789 1829
cf869cce 1830 if (type == entry2->key_.type)
7fb9f789
NC		 1831 /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1832 To skip creation of difference entry we use the type,
1833 which we won't see in GOT entries for sure. */
cf869cce 1834 type = R_68K_max;
7fb9f789
NC		 1835 }
1836 else
cf869cce 1837 /* We didn't find the entry. Add entry1 to DIFF. */
7fb9f789 1838 {
cf869cce 1839 BFD_ASSERT (entry1->key_.type != R_68K_max);
7fb9f789 1840
cf869cce
NC		 1841 type = elf_m68k_update_got_entry_type (arg->diff,
1842 R_68K_max, entry1->key_.type);
7fb9f789 1843
7fb9f789 1844 if (entry1->key_.bfd != NULL)
cf869cce 1845 arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type);
7fb9f789
NC		 1846 }
1847
cf869cce 1848 if (type != R_68K_max)
7fb9f789
NC		 1849 /* Create an entry in DIFF. */
1850 {
1851 struct elf_m68k_got_entry *entry;
1852
1853 entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE,
1854 arg->info);
1855 if (entry == NULL)
1856 {
1857 arg->error_p = TRUE;
1858 return 0;
1859 }
1860
cf869cce 1861 entry->key_.type = type;
7fb9f789
NC		 1862 }
1863
1864 return 1;
1865}
1866
1867/* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1868 Construct DIFF GOT holding the entries which should be added or updated
1869 in BIG GOT to accumulate information from SMALL.
1870 INFO is the context where memory should be allocated. */
1871
1872static bfd_boolean
1873elf_m68k_can_merge_gots (struct elf_m68k_got *big,
1874 const struct elf_m68k_got *small,
1875 struct bfd_link_info *info,
1876 struct elf_m68k_got *diff)
1877{
1878 struct elf_m68k_can_merge_gots_arg arg_;
1879
1880 BFD_ASSERT (small->offset == (bfd_vma) -1);
1881
1882 arg_.big = big;
1883 arg_.diff = diff;
1884 arg_.info = info;
1885 arg_.error_p = FALSE;
1886 htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_);
1887 if (arg_.error_p)
1888 {
1889 diff->offset = 0;
1890 return FALSE;
1891 }
1892
1893 /* Check for overflow. */
cf869cce
NC		 1894 if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8]
1895 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1896 || (big->n_slots[R_16] + arg_.diff->n_slots[R_16]
1897 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
7fb9f789
NC		 1898 return FALSE;
1899
1900 return TRUE;
1901}
1902
1903struct elf_m68k_merge_gots_arg
1904{
1905 /* The BIG got. */
1906 struct elf_m68k_got *big;
1907
1908 /* Context where memory should be allocated. */
1909 struct bfd_link_info *info;
1910
1911 /* Error flag. */
1912 bfd_boolean error_p;
1913};
1914
1915/* Process a single entry from DIFF got. Add or update corresponding
1916 entry in the BIG got. */
1917
1918static int
1919elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg)
1920{
1921 const struct elf_m68k_got_entry *from;
1922 struct elf_m68k_merge_gots_arg *arg;
1923 struct elf_m68k_got_entry *to;
1924
1925 from = (const struct elf_m68k_got_entry *) *entry_ptr;
1926 arg = (struct elf_m68k_merge_gots_arg *) _arg;
1927
1928 to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE,
1929 arg->info);
1930 if (to == NULL)
1931 {
1932 arg->error_p = TRUE;
1933 return 0;
1934 }
1935
1936 BFD_ASSERT (to->u.s1.refcount == 0);
1937 /* All we need to merge is TYPE. */
cf869cce 1938 to->key_.type = from->key_.type;
7fb9f789
NC		 1939
1940 return 1;
1941}
1942
1943/* Merge data from DIFF to BIG. INFO is context where memory should be
1944 allocated. */
1945
1946static bfd_boolean
1947elf_m68k_merge_gots (struct elf_m68k_got *big,
1948 struct elf_m68k_got *diff,
1949 struct bfd_link_info *info)
1950{
1951 if (diff->entries != NULL)
1952 /* DIFF is not empty. Merge it into BIG GOT. */
1953 {
1954 struct elf_m68k_merge_gots_arg arg_;
1955
1956 /* Merge entries. */
1957 arg_.big = big;
1958 arg_.info = info;
1959 arg_.error_p = FALSE;
1960 htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_);
1961 if (arg_.error_p)
1962 return FALSE;
1963
1964 /* Merge counters. */
cf869cce
NC		 1965 big->n_slots[R_8] += diff->n_slots[R_8];
1966 big->n_slots[R_16] += diff->n_slots[R_16];
1967 big->n_slots[R_32] += diff->n_slots[R_32];
1968 big->local_n_slots += diff->local_n_slots;
7fb9f789
NC		 1969 }
1970 else
1971 /* DIFF is empty. */
1972 {
cf869cce
NC		 1973 BFD_ASSERT (diff->n_slots[R_8] == 0);
1974 BFD_ASSERT (diff->n_slots[R_16] == 0);
1975 BFD_ASSERT (diff->n_slots[R_32] == 0);
1976 BFD_ASSERT (diff->local_n_slots == 0);
7fb9f789
NC		 1977 }
1978
1979 BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p
cf869cce
NC		 1980 || ((big->n_slots[R_8]
1981 <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1982 && (big->n_slots[R_16]
1983 <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))));
7fb9f789
NC		 1984
1985 return TRUE;
1986}
1987
1988struct elf_m68k_finalize_got_offsets_arg
1989{
cf869cce
NC		 1990 /* Ranges of the offsets for GOT entries.
1991 R_x entries receive offsets between offset1[R_x] and offset2[R_x].
1992 R_x is R_8, R_16 and R_32. */
1993 bfd_vma *offset1;
1994 bfd_vma *offset2;
7fb9f789
NC		 1995
1996 /* Mapping from global symndx to global symbols.
1997 This is used to build lists of got entries for global symbols. */
1998 struct elf_m68k_link_hash_entry **symndx2h;
cf869cce
NC		 1999
2000 bfd_vma n_ldm_entries;
7fb9f789
NC		 2001};
2002
2003/* Assign ENTRY an offset. Build list of GOT entries for global symbols
2004 along the way. */
2005
2006static int
2007elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg)
2008{
2009 struct elf_m68k_got_entry *entry;
2010 struct elf_m68k_finalize_got_offsets_arg *arg;
2011
cf869cce
NC		 2012 enum elf_m68k_got_offset_size got_offset_size;
2013 bfd_vma entry_size;
2014
7fb9f789
NC		 2015 entry = (struct elf_m68k_got_entry *) *entry_ptr;
2016 arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg;
2017
2018 /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
2019 BFD_ASSERT (entry->u.s1.refcount == 0);
2020
cf869cce
NC		 2021 /* Get GOT offset size for the entry . */
2022 got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type);
7fb9f789 2023
cf869cce
NC		 2024 /* Calculate entry size in bytes. */
2025 entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type);
7fb9f789 2026
cf869cce
NC		 2027 /* Check if we should switch to negative range of the offsets. */
2028 if (arg->offset1[got_offset_size] + entry_size
2029 > arg->offset2[got_offset_size])
2030 {
2031 /* Verify that this is the only switch to negative range for
2032 got_offset_size. If this assertion fails, then we've miscalculated
2033 range for got_offset_size entries in
2034 elf_m68k_finalize_got_offsets. */
2035 BFD_ASSERT (arg->offset2[got_offset_size]
2036 != arg->offset2[-(int) got_offset_size - 1]);
2037
2038 /* Switch. */
2039 arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1];
2040 arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1];
2041
2042 /* Verify that now we have enough room for the entry. */
2043 BFD_ASSERT (arg->offset1[got_offset_size] + entry_size
2044 <= arg->offset2[got_offset_size]);
7fb9f789
NC		 2045 }
2046
cf869cce
NC		 2047 /* Assign offset to entry. */
2048 entry->u.s2.offset = arg->offset1[got_offset_size];
2049 arg->offset1[got_offset_size] += entry_size;
2050
7fb9f789
NC		 2051 if (entry->key_.bfd == NULL)
2052 /* Hook up this entry into the list of got_entries of H. */
2053 {
2054 struct elf_m68k_link_hash_entry *h;
2055
7fb9f789 2056 h = arg->symndx2h[entry->key_.symndx];
cf869cce
NC		 2057 if (h != NULL)
2058 {
2059 entry->u.s2.next = h->glist;
2060 h->glist = entry;
2061 }
2062 else
2063 /* This should be the entry for TLS_LDM relocation then. */
2064 {
2065 BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type)
2066 == R_68K_TLS_LDM32)
2067 && entry->key_.symndx == 0);
7fb9f789 2068
cf869cce
NC		 2069 ++arg->n_ldm_entries;
2070 }
7fb9f789
NC		 2071 }
2072 else
2073 /* This entry is for local symbol. */
2074 entry->u.s2.next = NULL;
2075
2076 return 1;
2077}
2078
2079/* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
2080 should use negative offsets.
2081 Build list of GOT entries for global symbols along the way.
2082 SYMNDX2H is mapping from global symbol indices to actual
cf869cce
NC		 2083 global symbols.
2084 Return offset at which next GOT should start. */
7fb9f789
NC		 2085
2086static void
2087elf_m68k_finalize_got_offsets (struct elf_m68k_got *got,
2088 bfd_boolean use_neg_got_offsets_p,
cf869cce
NC		 2089 struct elf_m68k_link_hash_entry **symndx2h,
2090 bfd_vma *final_offset, bfd_vma *n_ldm_entries)
7fb9f789
NC		 2091{
2092 struct elf_m68k_finalize_got_offsets_arg arg_;
cf869cce
NC		 2093 bfd_vma offset1_[2 * R_LAST];
2094 bfd_vma offset2_[2 * R_LAST];
2095 int i;
2096 bfd_vma start_offset;
7fb9f789
NC		 2097
2098 BFD_ASSERT (got->offset != (bfd_vma) -1);
2099
2100 /* We set entry offsets relative to the .got section (and not the
2101 start of a particular GOT), so that we can use them in
cf869cce 2102 finish_dynamic_symbol without needing to know the GOT which they come
7fb9f789
NC		 2103 from. */
2104
cf869cce
NC		 2105 /* Put offset1 in the middle of offset1_, same for offset2. */
2106 arg_.offset1 = offset1_ + R_LAST;
2107 arg_.offset2 = offset2_ + R_LAST;
2108
2109 start_offset = got->offset;
2110
7fb9f789 2111 if (use_neg_got_offsets_p)
cf869cce
NC		 2112 /* Setup both negative and positive ranges for R_8, R_16 and R_32. */
2113 i = -(int) R_32 - 1;
2114 else
2115 /* Setup positives ranges for R_8, R_16 and R_32. */
2116 i = (int) R_8;
2117
2118 for (; i <= (int) R_32; ++i)
7fb9f789 2119 {
cf869cce 2120 int j;
7fb9f789
NC		 2121 size_t n;
2122
cf869cce
NC		 2123 /* Set beginning of the range of offsets I. */
2124 arg_.offset1[i] = start_offset;
7fb9f789 2125
cf869cce
NC		 2126 /* Calculate number of slots that require I offsets. */
2127 j = (i >= 0) ? i : -i - 1;
2128 n = (j >= 1) ? got->n_slots[j - 1] : 0;
2129 n = got->n_slots[j] - n;
7fb9f789 2130
cf869cce
NC		 2131 if (use_neg_got_offsets_p && n != 0)
2132 {
2133 if (i < 0)
2134 /* We first fill the positive side of the range, so we might
2135 end up with one empty slot at that side when we can't fit
2136 whole 2-slot entry. Account for that at negative side of
2137 the interval with one additional entry. */
2138 n = n / 2 + 1;
2139 else
2140 /* When the number of slots is odd, make positive side of the
2141 range one entry bigger. */
2142 n = (n + 1) / 2;
2143 }
2144
2145 /* N is the number of slots that require I offsets.
2146 Calculate length of the range for I offsets. */
2147 n = 4 * n;
7fb9f789 2148
cf869cce
NC		 2149 /* Set end of the range. */
2150 arg_.offset2[i] = start_offset + n;
7fb9f789 2151
cf869cce 2152 start_offset = arg_.offset2[i];
7fb9f789
NC		 2153 }
2154
cf869cce
NC		 2155 if (!use_neg_got_offsets_p)
2156 /* Make sure that if we try to switch to negative offsets in
2157 elf_m68k_finalize_got_offsets_1, the assert therein will catch
2158 the bug. */
2159 for (i = R_8; i <= R_32; ++i)
2160 arg_.offset2[-i - 1] = arg_.offset2[i];
7fb9f789 2161
cf869cce
NC		 2162 /* Setup got->offset. offset1[R_8] is either in the middle or at the
2163 beginning of GOT depending on use_neg_got_offsets_p. */
2164 got->offset = arg_.offset1[R_8];
7fb9f789 2165
cf869cce
NC		 2166 arg_.symndx2h = symndx2h;
2167 arg_.n_ldm_entries = 0;
7fb9f789 2168
cf869cce
NC		 2169 /* Assign offsets. */
2170 htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_);
7fb9f789 2171
cf869cce
NC		 2172 /* Check offset ranges we have actually assigned. */
2173 for (i = (int) R_8; i <= (int) R_32; ++i)
2174 BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4);
7fb9f789 2175
cf869cce
NC		 2176 *final_offset = start_offset;
2177 *n_ldm_entries = arg_.n_ldm_entries;
7fb9f789
NC		 2178}
2179
2180struct elf_m68k_partition_multi_got_arg
2181{
2182 /* The GOT we are adding entries to. Aka big got. */
2183 struct elf_m68k_got *current_got;
2184
2185 /* Offset to assign the next CURRENT_GOT. */
2186 bfd_vma offset;
2187
2188 /* Context where memory should be allocated. */
2189 struct bfd_link_info *info;
2190
cf869cce 2191 /* Total number of slots in the .got section.
7fb9f789 2192 This is used to calculate size of the .got and .rela.got sections. */
cf869cce 2193 bfd_vma n_slots;
7fb9f789 2194
cf869cce
NC		 2195 /* Difference in numbers of allocated slots in the .got section
2196 and necessary relocations in the .rela.got section.
7fb9f789 2197 This is used to calculate size of the .rela.got section. */
cf869cce 2198 bfd_vma slots_relas_diff;
7fb9f789
NC		 2199
2200 /* Error flag. */
2201 bfd_boolean error_p;
2202
2203 /* Mapping from global symndx to global symbols.
2204 This is used to build lists of got entries for global symbols. */
2205 struct elf_m68k_link_hash_entry **symndx2h;
2206};
2207
cf869cce
NC		 2208static void
2209elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg)
2210{
2211 bfd_vma n_ldm_entries;
2212
2213 elf_m68k_finalize_got_offsets (arg->current_got,
2214 (elf_m68k_hash_table (arg->info)
2215 ->use_neg_got_offsets_p),
2216 arg->symndx2h,
2217 &arg->offset, &n_ldm_entries);
2218
2219 arg->n_slots += arg->current_got->n_slots[R_32];
2220
0e1862bb 2221 if (!bfd_link_pic (arg->info))
cf869cce
NC		 2222 /* If we are generating a shared object, we need to
2223 output a R_68K_RELATIVE reloc so that the dynamic
2224 linker can adjust this GOT entry. Overwise we
2225 don't need space in .rela.got for local symbols. */
2226 arg->slots_relas_diff += arg->current_got->local_n_slots;
2227
2228 /* @LDM relocations require a 2-slot GOT entry, but only
2229 one relocation. Account for that. */
2230 arg->slots_relas_diff += n_ldm_entries;
2231
2232 BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots);
2233}
2234
2235
7fb9f789
NC		 2236/* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
2237 or start a new CURRENT_GOT. */
2238
2239static int
2240elf_m68k_partition_multi_got_1 (void **_entry, void *_arg)
2241{
2242 struct elf_m68k_bfd2got_entry *entry;
2243 struct elf_m68k_partition_multi_got_arg *arg;
2244 struct elf_m68k_got *got;
7fb9f789
NC		 2245 struct elf_m68k_got diff_;
2246 struct elf_m68k_got *diff;
2247
2248 entry = (struct elf_m68k_bfd2got_entry *) *_entry;
2249 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2250
2251 got = entry->got;
2252 BFD_ASSERT (got != NULL);
2253 BFD_ASSERT (got->offset == (bfd_vma) -1);
2254
2255 diff = NULL;
2256
2257 if (arg->current_got != NULL)
2258 /* Construct diff. */
2259 {
2260 diff = &diff_;
cf869cce 2261 elf_m68k_init_got (diff);
7fb9f789
NC		 2262
2263 if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff))
2264 {
2265 if (diff->offset == 0)
2266 /* Offset set to 0 in the diff_ indicates an error. */
2267 {
2268 arg->error_p = TRUE;
2269 goto final_return;
2270 }
2271
2272 if (elf_m68k_hash_table (arg->info)->allow_multigot_p)
2273 {
2274 elf_m68k_clear_got (diff);
cf869cce 2275 /* Schedule to finish up current_got and start new one. */
7fb9f789
NC		 2276 diff = NULL;
2277 }
2278 /* else
2279 Merge GOTs no matter what. If big GOT overflows,
2280 we'll fail in relocate_section due to truncated relocations.
2281
2282 ??? May be fail earlier? E.g., in can_merge_gots. */
2283 }
2284 }
2285 else
2286 /* Diff of got against empty current_got is got itself. */
2287 {
cf869cce 2288 /* Create empty current_got to put subsequent GOTs to. */
7fb9f789
NC		 2289 arg->current_got = elf_m68k_create_empty_got (arg->info);
2290 if (arg->current_got == NULL)
2291 {
2292 arg->error_p = TRUE;
2293 goto final_return;
2294 }
2295
2296 arg->current_got->offset = arg->offset;
2297
2298 diff = got;
2299 }
2300
7fb9f789
NC		 2301 if (diff != NULL)
2302 {
cf869cce 2303 if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info))
7fb9f789
NC		 2304 {
2305 arg->error_p = TRUE;
2306 goto final_return;
2307 }
2308
2309 /* Now we can free GOT. */
2310 elf_m68k_clear_got (got);
2311
cf869cce 2312 entry->got = arg->current_got;
7fb9f789
NC		 2313 }
2314 else
2315 {
7fb9f789 2316 /* Finish up current_got. */
cf869cce 2317 elf_m68k_partition_multi_got_2 (arg);
7fb9f789 2318
cf869cce
NC		 2319 /* Schedule to start a new current_got. */
2320 arg->current_got = NULL;
7fb9f789
NC		 2321
2322 /* Retry. */
2323 if (!elf_m68k_partition_multi_got_1 (_entry, _arg))
2324 {
2325 BFD_ASSERT (arg->error_p);
2326 goto final_return;
2327 }
2328 }
2329
2330 final_return:
2331 if (diff != NULL)
2332 elf_m68k_clear_got (diff);
2333
535b785f 2334 return !arg->error_p;
7fb9f789
NC		 2335}
2336
2337/* Helper function to build symndx2h mapping. */
2338
2339static bfd_boolean
2340elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h,
2341 void *_arg)
2342{
2343 struct elf_m68k_link_hash_entry *h;
2344
2345 h = elf_m68k_hash_entry (_h);
2346
2347 if (h->got_entry_key != 0)
2348 /* H has at least one entry in the GOT. */
2349 {
2350 struct elf_m68k_partition_multi_got_arg *arg;
2351
2352 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2353
2354 BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL);
2355 arg->symndx2h[h->got_entry_key] = h;
2356 }
2357
2358 return TRUE;
2359}
2360
2361/* Merge GOTs of some BFDs, assign offsets to GOT entries and build
2362 lists of GOT entries for global symbols.
2363 Calculate sizes of .got and .rela.got sections. */
2364
2365static bfd_boolean
2366elf_m68k_partition_multi_got (struct bfd_link_info *info)
2367{
2368 struct elf_m68k_multi_got *multi_got;
2369 struct elf_m68k_partition_multi_got_arg arg_;
2370
2371 multi_got = elf_m68k_multi_got (info);
2372
2373 arg_.current_got = NULL;
2374 arg_.offset = 0;
2375 arg_.info = info;
cf869cce
NC		 2376 arg_.n_slots = 0;
2377 arg_.slots_relas_diff = 0;
7fb9f789
NC		 2378 arg_.error_p = FALSE;
2379
2380 if (multi_got->bfd2got != NULL)
2381 {
2382 /* Initialize symndx2h mapping. */
2383 {
2384 arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx
2385 * sizeof (*arg_.symndx2h));
2386 if (arg_.symndx2h == NULL)
2387 return FALSE;
2388
2389 elf_link_hash_traverse (elf_hash_table (info),
2390 elf_m68k_init_symndx2h_1, &arg_);
2391 }
2392
2393 /* Partition. */
2394 htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1,
2395 &arg_);
2396 if (arg_.error_p)
2397 {
2398 free (arg_.symndx2h);
2399 arg_.symndx2h = NULL;
2400
2401 return FALSE;
2402 }
2403
2404 /* Finish up last current_got. */
cf869cce 2405 elf_m68k_partition_multi_got_2 (&arg_);
7fb9f789
NC		 2406
2407 free (arg_.symndx2h);
266abb8f 2408 }
7fb9f789
NC		 2409
2410 if (elf_hash_table (info)->dynobj != NULL)
2411 /* Set sizes of .got and .rela.got sections. */
266abb8f 2412 {
7fb9f789 2413 asection *s;
425c6cb0 2414
ce558b89 2415 s = elf_hash_table (info)->sgot;
7fb9f789 2416 if (s != NULL)
cf869cce 2417 s->size = arg_.offset;
425c6cb0 2418 else
cf869cce 2419 BFD_ASSERT (arg_.offset == 0);
425c6cb0 2420
cf869cce
NC		 2421 BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots);
2422 arg_.n_slots -= arg_.slots_relas_diff;
7fb9f789 2423
ce558b89 2424 s = elf_hash_table (info)->srelgot;
7fb9f789 2425 if (s != NULL)
cf869cce 2426 s->size = arg_.n_slots * sizeof (Elf32_External_Rela);
3bdcfdf4 2427 else
cf869cce 2428 BFD_ASSERT (arg_.n_slots == 0);
9e1281c7 2429 }
7fb9f789
NC		 2430 else
2431 BFD_ASSERT (multi_got->bfd2got == NULL);
9e1281c7 2432
b34976b6 2433 return TRUE;
9e1281c7
CM		 2434}
2435
7fb9f789
NC		 2436/* Copy any information related to dynamic linking from a pre-existing
2437 symbol to a newly created symbol. Also called to copy flags and
2438 other back-end info to a weakdef, in which case the symbol is not
2439 newly created and plt/got refcounts and dynamic indices should not
2440 be copied. */
2441
2442static void
2443elf_m68k_copy_indirect_symbol (struct bfd_link_info *info,
2444 struct elf_link_hash_entry *_dir,
2445 struct elf_link_hash_entry *_ind)
2446{
2447 struct elf_m68k_link_hash_entry *dir;
2448 struct elf_m68k_link_hash_entry *ind;
2449
2450 _bfd_elf_link_hash_copy_indirect (info, _dir, _ind);
2451
2452 if (_ind->root.type != bfd_link_hash_indirect)
2453 return;
2454
2455 dir = elf_m68k_hash_entry (_dir);
2456 ind = elf_m68k_hash_entry (_ind);
2457
e5f2b1de
NC		 2458 /* Any absolute non-dynamic relocations against an indirect or weak
2459 definition will be against the target symbol. */
2460 _dir->non_got_ref |= _ind->non_got_ref;
2461
7fb9f789
NC		 2462 /* We might have a direct symbol already having entries in the GOTs.
2463 Update its key only in case indirect symbol has GOT entries and
2464 assert that both indirect and direct symbols don't have GOT entries
2465 at the same time. */
2466 if (ind->got_entry_key != 0)
266abb8f 2467 {
7fb9f789
NC		 2468 BFD_ASSERT (dir->got_entry_key == 0);
2469 /* Assert that GOTs aren't partioned yet. */
2470 BFD_ASSERT (ind->glist == NULL);
425c6cb0 2471
7fb9f789
NC		 2472 dir->got_entry_key = ind->got_entry_key;
2473 ind->got_entry_key = 0;
266abb8f 2474 }
9e1281c7 2475}
7fb9f789 2476
252b5132
RH		 2477/* Look through the relocs for a section during the first phase, and
2478 allocate space in the global offset table or procedure linkage
2479 table. */
2480
b34976b6 2481static bfd_boolean
2c3fc389
NC		 2482elf_m68k_check_relocs (bfd *abfd,
2483 struct bfd_link_info *info,
2484 asection *sec,
2485 const Elf_Internal_Rela *relocs)
252b5132
RH		 2486{
2487 bfd *dynobj;
2488 Elf_Internal_Shdr *symtab_hdr;
2489 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 2490 const Elf_Internal_Rela *rel;
2491 const Elf_Internal_Rela *rel_end;
252b5132 2492 asection *sreloc;
7fb9f789 2493 struct elf_m68k_got *got;
252b5132 2494
0e1862bb 2495 if (bfd_link_relocatable (info))
b34976b6 2496 return TRUE;
252b5132
RH		 2497
2498 dynobj = elf_hash_table (info)->dynobj;
2499 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2500 sym_hashes = elf_sym_hashes (abfd);
252b5132 2501
252b5132
RH		 2502 sreloc = NULL;
2503
7fb9f789
NC		 2504 got = NULL;
2505
252b5132
RH		 2506 rel_end = relocs + sec->reloc_count;
2507 for (rel = relocs; rel < rel_end; rel++)
2508 {
2509 unsigned long r_symndx;
2510 struct elf_link_hash_entry *h;
2511
2512 r_symndx = ELF32_R_SYM (rel->r_info);
2513
2514 if (r_symndx < symtab_hdr->sh_info)
2515 h = NULL;
2516 else
973a3492
L		 2517 {
2518 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2519 while (h->root.type == bfd_link_hash_indirect
2520 || h->root.type == bfd_link_hash_warning)
2521 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2522 }
252b5132
RH		 2523
2524 switch (ELF32_R_TYPE (rel->r_info))
2525 {
2526 case R_68K_GOT8:
2527 case R_68K_GOT16:
2528 case R_68K_GOT32:
2529 if (h != NULL
2530 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2531 break;
2532 /* Fall through. */
cf869cce
NC		 2533
2534 /* Relative GOT relocations. */
252b5132
RH		 2535 case R_68K_GOT8O:
2536 case R_68K_GOT16O:
2537 case R_68K_GOT32O:
cf869cce
NC		 2538 /* Fall through. */
2539
2540 /* TLS relocations. */
2541 case R_68K_TLS_GD8:
2542 case R_68K_TLS_GD16:
2543 case R_68K_TLS_GD32:
2544 case R_68K_TLS_LDM8:
2545 case R_68K_TLS_LDM16:
2546 case R_68K_TLS_LDM32:
2547 case R_68K_TLS_IE8:
2548 case R_68K_TLS_IE16:
2549 case R_68K_TLS_IE32:
2550
e5f2b1de
NC		 2551 case R_68K_TLS_TPREL32:
2552 case R_68K_TLS_DTPREL32:
2553
2554 if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32
0e1862bb 2555 && bfd_link_pic (info))
e5f2b1de
NC		 2556 /* Do the special chorus for libraries with static TLS. */
2557 info->flags |= DF_STATIC_TLS;
2558
252b5132
RH		 2559 /* This symbol requires a global offset table entry. */
2560
2561 if (dynobj == NULL)
2562 {
2563 /* Create the .got section. */
2564 elf_hash_table (info)->dynobj = dynobj = abfd;
2565 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 2566 return FALSE;
252b5132
RH		 2567 }
2568
7fb9f789 2569 if (got == NULL)
252b5132 2570 {
7fb9f789 2571 struct elf_m68k_bfd2got_entry *bfd2got_entry;
252b5132 2572
7fb9f789
NC		 2573 bfd2got_entry
2574 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2575 abfd, FIND_OR_CREATE, info);
2576 if (bfd2got_entry == NULL)
2577 return FALSE;
252b5132 2578
7fb9f789
NC		 2579 got = bfd2got_entry->got;
2580 BFD_ASSERT (got != NULL);
252b5132 2581 }
7fb9f789
NC		 2582
2583 {
2584 struct elf_m68k_got_entry *got_entry;
2585
2586 /* Add entry to got. */
2587 got_entry = elf_m68k_add_entry_to_got (got, h, abfd,
2588 ELF32_R_TYPE (rel->r_info),
2589 r_symndx, info);
2590 if (got_entry == NULL)
2591 return FALSE;
2592
2593 if (got_entry->u.s1.refcount == 1)
2594 {
2595 /* Make sure this symbol is output as a dynamic symbol. */
2596 if (h != NULL
2597 && h->dynindx == -1
2598 && !h->forced_local)
2599 {
2600 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2601 return FALSE;
2602 }
7fb9f789
NC		 2603 }
2604 }
2605
252b5132
RH		 2606 break;
2607
2608 case R_68K_PLT8:
2609 case R_68K_PLT16:
2610 case R_68K_PLT32:
2611 /* This symbol requires a procedure linkage table entry. We
2612 actually build the entry in adjust_dynamic_symbol,
07d6d2b8
AM		 2613 because this might be a case of linking PIC code which is
2614 never referenced by a dynamic object, in which case we
2615 don't need to generate a procedure linkage table entry
2616 after all. */
252b5132
RH		 2617
2618 /* If this is a local symbol, we resolve it directly without
2619 creating a procedure linkage table entry. */
2620 if (h == NULL)
2621 continue;
2622
f5385ebf 2623 h->needs_plt = 1;
51b64d56 2624 h->plt.refcount++;
252b5132
RH		 2625 break;
2626
2627 case R_68K_PLT8O:
2628 case R_68K_PLT16O:
2629 case R_68K_PLT32O:
2630 /* This symbol requires a procedure linkage table entry. */
2631
2632 if (h == NULL)
2633 {
2634 /* It does not make sense to have this relocation for a
2635 local symbol. FIXME: does it? How to handle it if
2636 it does make sense? */
2637 bfd_set_error (bfd_error_bad_value);
b34976b6 2638 return FALSE;
252b5132
RH		 2639 }
2640
2641 /* Make sure this symbol is output as a dynamic symbol. */
b6152c34 2642 if (h->dynindx == -1
f5385ebf 2643 && !h->forced_local)
252b5132 2644 {
c152c796 2645 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2646 return FALSE;
252b5132
RH		 2647 }
2648
f5385ebf 2649 h->needs_plt = 1;
51b64d56 2650 h->plt.refcount++;
252b5132
RH		 2651 break;
2652
2653 case R_68K_PC8:
2654 case R_68K_PC16:
2655 case R_68K_PC32:
2656 /* If we are creating a shared library and this is not a local
2657 symbol, we need to copy the reloc into the shared library.
2658 However when linking with -Bsymbolic and this is a global
2659 symbol which is defined in an object we are including in the
2660 link (i.e., DEF_REGULAR is set), then we can resolve the
2661 reloc directly. At this point we have not seen all the input
2662 files, so it is possible that DEF_REGULAR is not set now but
2663 will be set later (it is never cleared). We account for that
2664 possibility below by storing information in the
2665 pcrel_relocs_copied field of the hash table entry. */
0e1862bb 2666 if (!(bfd_link_pic (info)
252b5132
RH		 2667 && (sec->flags & SEC_ALLOC) != 0
2668 && h != NULL
a496fbc8 2669 && (!SYMBOLIC_BIND (info, h)
b6152c34 2670 || h->root.type == bfd_link_hash_defweak
f5385ebf 2671 || !h->def_regular)))
252b5132
RH		 2672 {
2673 if (h != NULL)
2674 {
2675 /* Make sure a plt entry is created for this symbol if
2676 it turns out to be a function defined by a dynamic
2677 object. */
51b64d56 2678 h->plt.refcount++;
252b5132
RH		 2679 }
2680 break;
2681 }
2682 /* Fall through. */
2683 case R_68K_8:
2684 case R_68K_16:
2685 case R_68K_32:
810e6986
NC		 2686 /* We don't need to handle relocs into sections not going into
2687 the "real" output. */
2688 if ((sec->flags & SEC_ALLOC) == 0)
2689 break;
2690
252b5132
RH		 2691 if (h != NULL)
2692 {
2693 /* Make sure a plt entry is created for this symbol if it
2694 turns out to be a function defined by a dynamic object. */
51b64d56 2695 h->plt.refcount++;
e5f2b1de 2696
0e1862bb 2697 if (bfd_link_executable (info))
e5f2b1de
NC		 2698 /* This symbol needs a non-GOT reference. */
2699 h->non_got_ref = 1;
252b5132
RH		 2700 }
2701
2702 /* If we are creating a shared library, we need to copy the
2703 reloc into the shared library. */
5056ba1d
L		 2704 if (bfd_link_pic (info)
2705 && (h == NULL
2706 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
252b5132
RH		 2707 {
2708 /* When creating a shared object, we must copy these
2709 reloc types into the output file. We create a reloc
2710 section in dynobj and make room for this reloc. */
2711 if (sreloc == NULL)
2712 {
83bac4b0
NC		 2713 sreloc = _bfd_elf_make_dynamic_reloc_section
2714 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
252b5132 2715
252b5132 2716 if (sreloc == NULL)
83bac4b0 2717 return FALSE;
252b5132
RH		 2718 }
2719
3e829b4a
AS		 2720 if (sec->flags & SEC_READONLY
2721 /* Don't set DF_TEXTREL yet for PC relative
2722 relocations, they might be discarded later. */
2723 && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2724 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2725 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
2726 info->flags |= DF_TEXTREL;
2727
eea6121a 2728 sreloc->size += sizeof (Elf32_External_Rela);
252b5132 2729
b6152c34
AS		 2730 /* We count the number of PC relative relocations we have
2731 entered for this symbol, so that we can discard them
2732 again if, in the -Bsymbolic case, the symbol is later
2733 defined by a regular object, or, in the normal shared
2734 case, the symbol is forced to be local. Note that this
2735 function is only called if we are using an m68kelf linker
2736 hash table, which means that h is really a pointer to an
252b5132 2737 elf_m68k_link_hash_entry. */
b6152c34
AS		 2738 if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2739 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2740 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
252b5132 2741 {
252b5132 2742 struct elf_m68k_pcrel_relocs_copied *p;
b6152c34
AS		 2743 struct elf_m68k_pcrel_relocs_copied **head;
2744
2745 if (h != NULL)
2746 {
2747 struct elf_m68k_link_hash_entry *eh
0cca5f05 2748 = elf_m68k_hash_entry (h);
b6152c34
AS		 2749 head = &eh->pcrel_relocs_copied;
2750 }
2751 else
2752 {
2753 asection *s;
6edfbbad 2754 void *vpp;
87d72d41 2755 Elf_Internal_Sym *isym;
6edfbbad 2756
87d72d41
AM		 2757 isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache,
2758 abfd, r_symndx);
2759 if (isym == NULL)
b6152c34 2760 return FALSE;
252b5132 2761
87d72d41
AM		 2762 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2763 if (s == NULL)
2764 s = sec;
2765
6edfbbad
DJ		 2766 vpp = &elf_section_data (s)->local_dynrel;
2767 head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
b6152c34 2768 }
252b5132 2769
b6152c34 2770 for (p = *head; p != NULL; p = p->next)
252b5132
RH		 2771 if (p->section == sreloc)
2772 break;
2773
2774 if (p == NULL)
2775 {
2776 p = ((struct elf_m68k_pcrel_relocs_copied *)
dc810e39 2777 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
252b5132 2778 if (p == NULL)
b34976b6 2779 return FALSE;
b6152c34
AS		 2780 p->next = *head;
2781 *head = p;
252b5132
RH		 2782 p->section = sreloc;
2783 p->count = 0;
2784 }
2785
2786 ++p->count;
2787 }
2788 }
2789
2790 break;
2791
2792 /* This relocation describes the C++ object vtable hierarchy.
2793 Reconstruct it for later use during GC. */
2794 case R_68K_GNU_VTINHERIT:
c152c796 2795 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 2796 return FALSE;
252b5132
RH		 2797 break;
2798
2799 /* This relocation describes which C++ vtable entries are actually
2800 used. Record for later use during GC. */
2801 case R_68K_GNU_VTENTRY:
d17e0c6e
JB		 2802 BFD_ASSERT (h != NULL);
2803 if (h != NULL
2804 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 2805 return FALSE;
252b5132
RH		 2806 break;
2807
2808 default:
2809 break;
2810 }
2811 }
2812
b34976b6 2813 return TRUE;
252b5132
RH		 2814}
2815
2816/* Return the section that should be marked against GC for a given
2817 relocation. */
2818
2819static asection *
07adf181
AM		 2820elf_m68k_gc_mark_hook (asection *sec,
2821 struct bfd_link_info *info,
2822 Elf_Internal_Rela *rel,
2823 struct elf_link_hash_entry *h,
2824 Elf_Internal_Sym *sym)
252b5132
RH		 2825{
2826 if (h != NULL)
07adf181
AM		 2827 switch (ELF32_R_TYPE (rel->r_info))
2828 {
2829 case R_68K_GNU_VTINHERIT:
2830 case R_68K_GNU_VTENTRY:
2831 return NULL;
2832 }
2833
2834 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132 2835}
cc3e26be
RS		 2836\f
2837/* Return the type of PLT associated with OUTPUT_BFD. */
2838
2839static const struct elf_m68k_plt_info *
2840elf_m68k_get_plt_info (bfd *output_bfd)
2841{
2842 unsigned int features;
2843
2844 features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
2845 if (features & cpu32)
2846 return &elf_cpu32_plt_info;
2847 if (features & mcfisa_b)
2848 return &elf_isab_plt_info;
9a2e615a
NS		 2849 if (features & mcfisa_c)
2850 return &elf_isac_plt_info;
cc3e26be
RS		 2851 return &elf_m68k_plt_info;
2852}
2853
2854/* This function is called after all the input files have been read,
2855 and the input sections have been assigned to output sections.
2856 It's a convenient place to determine the PLT style. */
2857
2858static bfd_boolean
2859elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2860{
7fb9f789
NC		 2861 /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
2862 sections. */
2863 if (!elf_m68k_partition_multi_got (info))
2864 return FALSE;
2865
cc3e26be
RS		 2866 elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
2867 return TRUE;
2868}
252b5132 2869
252b5132
RH		 2870/* Adjust a symbol defined by a dynamic object and referenced by a
2871 regular object. The current definition is in some section of the
2872 dynamic object, but we're not including those sections. We have to
2873 change the definition to something the rest of the link can
2874 understand. */
2875
b34976b6 2876static bfd_boolean
2c3fc389
NC		 2877elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info,
2878 struct elf_link_hash_entry *h)
252b5132 2879{
cc3e26be 2880 struct elf_m68k_link_hash_table *htab;
252b5132
RH		 2881 bfd *dynobj;
2882 asection *s;
252b5132 2883
cc3e26be 2884 htab = elf_m68k_hash_table (info);
ce558b89 2885 dynobj = htab->root.dynobj;
252b5132
RH		 2886
2887 /* Make sure we know what is going on here. */
2888 BFD_ASSERT (dynobj != NULL
f5385ebf 2889 && (h->needs_plt
60d67dc8 2890 || h->is_weakalias
f5385ebf
AM		 2891 || (h->def_dynamic
2892 && h->ref_regular
2893 && !h->def_regular)));
252b5132
RH		 2894
2895 /* If this is a function, put it in the procedure linkage table. We
2896 will fill in the contents of the procedure linkage table later,
2897 when we know the address of the .got section. */
2898 if (h->type == STT_FUNC
f5385ebf 2899 || h->needs_plt)
252b5132 2900 {
9dfe8738 2901 if ((h->plt.refcount <= 0
07d6d2b8 2902 || SYMBOL_CALLS_LOCAL (info, h)
5056ba1d
L		 2903 || ((ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2904 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9dfe8738 2905 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2906 /* We must always create the plt entry if it was referenced
2907 by a PLTxxO relocation. In this case we already recorded
2908 it as a dynamic symbol. */
2909 && h->dynindx == -1)
2910 {
2911 /* This case can occur if we saw a PLTxx reloc in an input
2912 file, but the symbol was never referred to by a dynamic
9dfe8738
AS		 2913 object, or if all references were garbage collected. In
2914 such a case, we don't actually need to build a procedure
2915 linkage table, and we can just do a PCxx reloc instead. */
252b5132 2916 h->plt.offset = (bfd_vma) -1;
f5385ebf 2917 h->needs_plt = 0;
b34976b6 2918 return TRUE;
252b5132
RH		 2919 }
2920
2921 /* Make sure this symbol is output as a dynamic symbol. */
b6152c34 2922 if (h->dynindx == -1
f5385ebf 2923 && !h->forced_local)
252b5132 2924 {
c152c796 2925 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2926 return FALSE;
252b5132
RH		 2927 }
2928
ce558b89 2929 s = htab->root.splt;
252b5132
RH		 2930 BFD_ASSERT (s != NULL);
2931
2932 /* If this is the first .plt entry, make room for the special
2933 first entry. */
eea6121a 2934 if (s->size == 0)
cc3e26be 2935 s->size = htab->plt_info->size;
252b5132
RH		 2936
2937 /* If this symbol is not defined in a regular file, and we are
2938 not generating a shared library, then set the symbol to this
2939 location in the .plt. This is required to make function
2940 pointers compare as equal between the normal executable and
2941 the shared library. */
0e1862bb 2942 if (!bfd_link_pic (info)
f5385ebf 2943 && !h->def_regular)
252b5132
RH		 2944 {
2945 h->root.u.def.section = s;
eea6121a 2946 h->root.u.def.value = s->size;
252b5132
RH		 2947 }
2948
eea6121a 2949 h->plt.offset = s->size;
252b5132
RH		 2950
2951 /* Make room for this entry. */
cc3e26be 2952 s->size += htab->plt_info->size;
252b5132
RH		 2953
2954 /* We also need to make an entry in the .got.plt section, which
2955 will be placed in the .got section by the linker script. */
ce558b89 2956 s = htab->root.sgotplt;
252b5132 2957 BFD_ASSERT (s != NULL);
eea6121a 2958 s->size += 4;
252b5132
RH		 2959
2960 /* We also need to make an entry in the .rela.plt section. */
ce558b89 2961 s = htab->root.srelplt;
252b5132 2962 BFD_ASSERT (s != NULL);
eea6121a 2963 s->size += sizeof (Elf32_External_Rela);
252b5132 2964
b34976b6 2965 return TRUE;
252b5132
RH		 2966 }
2967
2968 /* Reinitialize the plt offset now that it is not used as a reference
2969 count any more. */
2970 h->plt.offset = (bfd_vma) -1;
2971
2972 /* If this is a weak symbol, and there is a real definition, the
2973 processor independent code will have arranged for us to see the
2974 real definition first, and we can just use the same value. */
60d67dc8 2975 if (h->is_weakalias)
252b5132 2976 {
60d67dc8
AM		 2977 struct elf_link_hash_entry *def = weakdef (h);
2978 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2979 h->root.u.def.section = def->root.u.def.section;
2980 h->root.u.def.value = def->root.u.def.value;
b34976b6 2981 return TRUE;
252b5132
RH		 2982 }
2983
2984 /* This is a reference to a symbol defined by a dynamic object which
2985 is not a function. */
2986
2987 /* If we are creating a shared library, we must presume that the
2988 only references to the symbol are via the global offset table.
2989 For such cases we need not do anything here; the relocations will
2990 be handled correctly by relocate_section. */
0e1862bb 2991 if (bfd_link_pic (info))
b34976b6 2992 return TRUE;
252b5132 2993
e5f2b1de
NC		 2994 /* If there are no references to this symbol that do not use the
2995 GOT, we don't need to generate a copy reloc. */
2996 if (!h->non_got_ref)
2997 return TRUE;
2998
252b5132
RH		 2999 /* We must allocate the symbol in our .dynbss section, which will
3000 become part of the .bss section of the executable. There will be
3001 an entry for this symbol in the .dynsym section. The dynamic
3002 object will contain position independent code, so all references
3003 from the dynamic object to this symbol will go through the global
3004 offset table. The dynamic linker will use the .dynsym entry to
3005 determine the address it must put in the global offset table, so
3006 both the dynamic object and the regular object will refer to the
3007 same memory location for the variable. */
3008
3d4d4302 3009 s = bfd_get_linker_section (dynobj, ".dynbss");
252b5132
RH		 3010 BFD_ASSERT (s != NULL);
3011
3012 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
3013 copy the initial value out of the dynamic object and into the
3014 runtime process image. We need to remember the offset into the
3015 .rela.bss section we are going to use. */
1d7e9d18 3016 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132
RH		 3017 {
3018 asection *srel;
3019
3d4d4302 3020 srel = bfd_get_linker_section (dynobj, ".rela.bss");
252b5132 3021 BFD_ASSERT (srel != NULL);
eea6121a 3022 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3023 h->needs_copy = 1;
252b5132
RH		 3024 }
3025
6cabe1ea 3026 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 3027}
3028
3029/* Set the sizes of the dynamic sections. */
3030
b34976b6 3031static bfd_boolean
2c3fc389
NC		 3032elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3033 struct bfd_link_info *info)
252b5132
RH		 3034{
3035 bfd *dynobj;
3036 asection *s;
b34976b6
AM		 3037 bfd_boolean plt;
3038 bfd_boolean relocs;
252b5132
RH		 3039
3040 dynobj = elf_hash_table (info)->dynobj;
3041 BFD_ASSERT (dynobj != NULL);
3042
3043 if (elf_hash_table (info)->dynamic_sections_created)
3044 {
3045 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 3046 if (bfd_link_executable (info) && !info->nointerp)
252b5132 3047 {
3d4d4302 3048 s = bfd_get_linker_section (dynobj, ".interp");
252b5132 3049 BFD_ASSERT (s != NULL);
eea6121a 3050 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 3051 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3052 }
3053 }
3054 else
3055 {
3056 /* We may have created entries in the .rela.got section.
3057 However, if we are not creating the dynamic sections, we will
3058 not actually use these entries. Reset the size of .rela.got,
3059 which will cause it to get stripped from the output file
3060 below. */
ce558b89 3061 s = elf_hash_table (info)->srelgot;
252b5132 3062 if (s != NULL)
eea6121a 3063 s->size = 0;
252b5132
RH		 3064 }
3065
b6152c34
AS		 3066 /* If this is a -Bsymbolic shared link, then we need to discard all
3067 PC relative relocs against symbols defined in a regular object.
3068 For the normal shared case we discard the PC relative relocs
3069 against symbols that have become local due to visibility changes.
3070 We allocated space for them in the check_relocs routine, but we
3071 will not fill them in in the relocate_section routine. */
0e1862bb 3072 if (bfd_link_pic (info))
0cca5f05
AS		 3073 elf_link_hash_traverse (elf_hash_table (info),
3074 elf_m68k_discard_copies,
2c3fc389 3075 info);
252b5132
RH		 3076
3077 /* The check_relocs and adjust_dynamic_symbol entry points have
3078 determined the sizes of the various dynamic sections. Allocate
3079 memory for them. */
b34976b6
AM		 3080 plt = FALSE;
3081 relocs = FALSE;
252b5132
RH		 3082 for (s = dynobj->sections; s != NULL; s = s->next)
3083 {
3084 const char *name;
252b5132
RH		 3085
3086 if ((s->flags & SEC_LINKER_CREATED) == 0)
3087 continue;
3088
3089 /* It's OK to base decisions on the section name, because none
3090 of the dynobj section names depend upon the input files. */
3091 name = bfd_get_section_name (dynobj, s);
3092
252b5132
RH		 3093 if (strcmp (name, ".plt") == 0)
3094 {
c456f082
AM		 3095 /* Remember whether there is a PLT. */
3096 plt = s->size != 0;
252b5132 3097 }
0112cd26 3098 else if (CONST_STRNEQ (name, ".rela"))
252b5132 3099 {
c456f082 3100 if (s->size != 0)
252b5132 3101 {
b34976b6 3102 relocs = TRUE;
252b5132
RH		 3103
3104 /* We use the reloc_count field as a counter if we need
3105 to copy relocs into the output file. */
3106 s->reloc_count = 0;
3107 }
3108 }
0112cd26 3109 else if (! CONST_STRNEQ (name, ".got")
c456f082 3110 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 3111 {
3112 /* It's not one of our sections, so don't allocate space. */
3113 continue;
3114 }
3115
c456f082 3116 if (s->size == 0)
252b5132 3117 {
c456f082
AM		 3118 /* If we don't need this section, strip it from the
3119 output file. This is mostly to handle .rela.bss and
3120 .rela.plt. We must create both sections in
3121 create_dynamic_sections, because they must be created
3122 before the linker maps input sections to output
3123 sections. The linker does that before
3124 adjust_dynamic_symbol is called, and it is that
3125 function which decides whether anything needs to go
3126 into these sections. */
8423293d 3127 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3128 continue;
3129 }
3130
c456f082
AM		 3131 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3132 continue;
3133
252b5132 3134 /* Allocate memory for the section contents. */
7a9af8c4
NC		 3135 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3136 Unused entries should be reclaimed before the section's contents
3137 are written out, but at the moment this does not happen. Thus in
3138 order to prevent writing out garbage, we initialise the section's
3139 contents to zero. */
eea6121a 3140 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3141 if (s->contents == NULL)
b34976b6 3142 return FALSE;
252b5132
RH		 3143 }
3144
3145 if (elf_hash_table (info)->dynamic_sections_created)
3146 {
3147 /* Add some entries to the .dynamic section. We fill in the
3148 values later, in elf_m68k_finish_dynamic_sections, but we
3149 must add the entries now so that we get the correct size for
3150 the .dynamic section. The DT_DEBUG entry is filled in by the
3151 dynamic linker and used by the debugger. */
dc810e39 3152#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3153 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3154
0e1862bb 3155 if (bfd_link_executable (info))
252b5132 3156 {
dc810e39 3157 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3158 return FALSE;
252b5132
RH		 3159 }
3160
3161 if (plt)
3162 {
dc810e39
AM		 3163 if (!add_dynamic_entry (DT_PLTGOT, 0)
3164 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3165 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3166 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3167 return FALSE;
252b5132
RH		 3168 }
3169
3170 if (relocs)
3171 {
dc810e39
AM		 3172 if (!add_dynamic_entry (DT_RELA, 0)
3173 || !add_dynamic_entry (DT_RELASZ, 0)
3174 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3175 return FALSE;
252b5132
RH		 3176 }
3177
aa91b392 3178 if ((info->flags & DF_TEXTREL) != 0)
252b5132 3179 {
dc810e39 3180 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3181 return FALSE;
252b5132
RH		 3182 }
3183 }
dc810e39 3184#undef add_dynamic_entry
252b5132 3185
b34976b6 3186 return TRUE;
252b5132
RH		 3187}
3188
0cca5f05 3189/* This function is called via elf_link_hash_traverse if we are
b6152c34
AS		 3190 creating a shared object. In the -Bsymbolic case it discards the
3191 space allocated to copy PC relative relocs against symbols which
3e829b4a 3192 are defined in regular objects. For the normal shared case, it
b6152c34
AS		 3193 discards space for pc-relative relocs that have become local due to
3194 symbol visibility changes. We allocated space for them in the
3195 check_relocs routine, but we won't fill them in in the
3e829b4a
AS		 3196 relocate_section routine.
3197
3198 We also check whether any of the remaining relocations apply
3199 against a readonly section, and set the DF_TEXTREL flag in this
3200 case. */
252b5132 3201
b34976b6 3202static bfd_boolean
2c3fc389
NC		 3203elf_m68k_discard_copies (struct elf_link_hash_entry *h,
3204 void * inf)
252b5132 3205{
b6152c34 3206 struct bfd_link_info *info = (struct bfd_link_info *) inf;
252b5132
RH		 3207 struct elf_m68k_pcrel_relocs_copied *s;
3208
2516a1ee 3209 if (!SYMBOL_CALLS_LOCAL (info, h))
3e829b4a
AS		 3210 {
3211 if ((info->flags & DF_TEXTREL) == 0)
3212 {
3213 /* Look for relocations against read-only sections. */
0cca5f05
AS		 3214 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3215 s != NULL;
3216 s = s->next)
3e829b4a
AS		 3217 if ((s->section->flags & SEC_READONLY) != 0)
3218 {
3219 info->flags |= DF_TEXTREL;
3220 break;
3221 }
3222 }
0cca5f05 3223
cab0ad83
AS		 3224 /* Make sure undefined weak symbols are output as a dynamic symbol
3225 in PIEs. */
3226 if (h->non_got_ref
3227 && h->root.type == bfd_link_hash_undefweak
3228 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3229 && h->dynindx == -1
3230 && !h->forced_local)
3231 {
3232 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3233 return FALSE;
3234 }
3235
3e829b4a
AS		 3236 return TRUE;
3237 }
252b5132 3238
0cca5f05
AS		 3239 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3240 s != NULL;
3241 s = s->next)
eea6121a 3242 s->section->size -= s->count * sizeof (Elf32_External_Rela);
252b5132 3243
b34976b6 3244 return TRUE;
252b5132
RH		 3245}
3246
cf869cce
NC		 3247
3248/* Install relocation RELA. */
3249
3250static void
3251elf_m68k_install_rela (bfd *output_bfd,
3252 asection *srela,
3253 Elf_Internal_Rela *rela)
3254{
3255 bfd_byte *loc;
3256
3257 loc = srela->contents;
3258 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3259 bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
3260}
3261
325e58c7
NC		 3262/* Find the base offsets for thread-local storage in this object,
3263 for GD/LD and IE/LE respectively. */
3264
3265#define DTP_OFFSET 0x8000
3266#define TP_OFFSET 0x7000
cf869cce
NC		 3267
3268static bfd_vma
3269dtpoff_base (struct bfd_link_info *info)
3270{
3271 /* If tls_sec is NULL, we should have signalled an error already. */
3272 if (elf_hash_table (info)->tls_sec == NULL)
3273 return 0;
325e58c7 3274 return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET;
cf869cce
NC		 3275}
3276
cf869cce 3277static bfd_vma
325e58c7 3278tpoff_base (struct bfd_link_info *info)
cf869cce 3279{
cf869cce 3280 /* If tls_sec is NULL, we should have signalled an error already. */
325e58c7 3281 if (elf_hash_table (info)->tls_sec == NULL)
cf869cce 3282 return 0;
325e58c7
NC		 3283 return elf_hash_table (info)->tls_sec->vma + TP_OFFSET;
3284}
3285
3286/* Output necessary relocation to handle a symbol during static link.
3287 This function is called from elf_m68k_relocate_section. */
3288
3289static void
3290elf_m68k_init_got_entry_static (struct bfd_link_info *info,
3291 bfd *output_bfd,
3292 enum elf_m68k_reloc_type r_type,
3293 asection *sgot,
3294 bfd_vma got_entry_offset,
3295 bfd_vma relocation)
3296{
3297 switch (elf_m68k_reloc_got_type (r_type))
3298 {
3299 case R_68K_GOT32O:
3300 bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset);
3301 break;
3302
3303 case R_68K_TLS_GD32:
3304 /* We know the offset within the module,
3305 put it into the second GOT slot. */
3306 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3307 sgot->contents + got_entry_offset + 4);
3308 /* FALLTHRU */
3309
3310 case R_68K_TLS_LDM32:
3311 /* Mark it as belonging to module 1, the executable. */
3312 bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset);
3313 break;
3314
3315 case R_68K_TLS_IE32:
3316 bfd_put_32 (output_bfd, relocation - tpoff_base (info),
3317 sgot->contents + got_entry_offset);
3318 break;
3319
3320 default:
3321 BFD_ASSERT (FALSE);
3322 }
3323}
3324
3325/* Output necessary relocation to handle a local symbol
3326 during dynamic link.
3327 This function is called either from elf_m68k_relocate_section
3328 or from elf_m68k_finish_dynamic_symbol. */
3329
3330static void
3331elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info,
3332 bfd *output_bfd,
3333 enum elf_m68k_reloc_type r_type,
3334 asection *sgot,
3335 bfd_vma got_entry_offset,
3336 bfd_vma relocation,
3337 asection *srela)
3338{
3339 Elf_Internal_Rela outrel;
3340
3341 switch (elf_m68k_reloc_got_type (r_type))
3342 {
3343 case R_68K_GOT32O:
3344 /* Emit RELATIVE relocation to initialize GOT slot
3345 at run-time. */
3346 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3347 outrel.r_addend = relocation;
3348 break;
3349
3350 case R_68K_TLS_GD32:
3351 /* We know the offset within the module,
3352 put it into the second GOT slot. */
3353 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3354 sgot->contents + got_entry_offset + 4);
3355 /* FALLTHRU */
3356
3357 case R_68K_TLS_LDM32:
3358 /* We don't know the module number,
3359 create a relocation for it. */
3360 outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32);
3361 outrel.r_addend = 0;
3362 break;
3363
3364 case R_68K_TLS_IE32:
3365 /* Emit TPREL relocation to initialize GOT slot
3366 at run-time. */
3367 outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32);
3368 outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma;
3369 break;
3370
3371 default:
3372 BFD_ASSERT (FALSE);
3373 }
3374
3375 /* Offset of the GOT entry. */
3376 outrel.r_offset = (sgot->output_section->vma
3377 + sgot->output_offset
3378 + got_entry_offset);
3379
3380 /* Install one of the above relocations. */
3381 elf_m68k_install_rela (output_bfd, srela, &outrel);
3382
3383 bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset);
cf869cce
NC		 3384}
3385
252b5132
RH		 3386/* Relocate an M68K ELF section. */
3387
b34976b6 3388static bfd_boolean
2c3fc389
NC		 3389elf_m68k_relocate_section (bfd *output_bfd,
3390 struct bfd_link_info *info,
3391 bfd *input_bfd,
3392 asection *input_section,
3393 bfd_byte *contents,
3394 Elf_Internal_Rela *relocs,
3395 Elf_Internal_Sym *local_syms,
3396 asection **local_sections)
252b5132 3397{
252b5132
RH		 3398 Elf_Internal_Shdr *symtab_hdr;
3399 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 3400 asection *sgot;
3401 asection *splt;
3402 asection *sreloc;
325e58c7 3403 asection *srela;
7fb9f789 3404 struct elf_m68k_got *got;
252b5132
RH		 3405 Elf_Internal_Rela *rel;
3406 Elf_Internal_Rela *relend;
3407
252b5132
RH		 3408 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3409 sym_hashes = elf_sym_hashes (input_bfd);
252b5132
RH		 3410
3411 sgot = NULL;
3412 splt = NULL;
3413 sreloc = NULL;
325e58c7 3414 srela = NULL;
252b5132 3415
7fb9f789
NC		 3416 got = NULL;
3417
252b5132
RH		 3418 rel = relocs;
3419 relend = relocs + input_section->reloc_count;
3420 for (; rel < relend; rel++)
3421 {
3422 int r_type;
3423 reloc_howto_type *howto;
3424 unsigned long r_symndx;
3425 struct elf_link_hash_entry *h;
3426 Elf_Internal_Sym *sym;
3427 asection *sec;
3428 bfd_vma relocation;
44f745a6 3429 bfd_boolean unresolved_reloc;
252b5132 3430 bfd_reloc_status_type r;
5056ba1d 3431 bfd_boolean resolved_to_zero;
252b5132
RH		 3432
3433 r_type = ELF32_R_TYPE (rel->r_info);
3434 if (r_type < 0 || r_type >= (int) R_68K_max)
3435 {
3436 bfd_set_error (bfd_error_bad_value);
b34976b6 3437 return FALSE;
252b5132
RH		 3438 }
3439 howto = howto_table + r_type;
3440
3441 r_symndx = ELF32_R_SYM (rel->r_info);
3442
252b5132
RH		 3443 h = NULL;
3444 sym = NULL;
3445 sec = NULL;
44f745a6 3446 unresolved_reloc = FALSE;
560e09e9 3447
252b5132
RH		 3448 if (r_symndx < symtab_hdr->sh_info)
3449 {
3450 sym = local_syms + r_symndx;
3451 sec = local_sections[r_symndx];
8517fae7 3452 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 3453 }
3454 else
3455 {
62d887d4 3456 bfd_boolean warned, ignored;
560e09e9 3457
b2a8e766
AM		 3458 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3459 r_symndx, symtab_hdr, sym_hashes,
3460 h, sec, relocation,
62d887d4 3461 unresolved_reloc, warned, ignored);
252b5132
RH		 3462 }
3463
dbaa2011 3464 if (sec != NULL && discarded_section (sec))
e4067dbb 3465 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3466 rel, 1, relend, howto, 0, contents);
ab96bf03 3467
0e1862bb 3468 if (bfd_link_relocatable (info))
ab96bf03
AM		 3469 continue;
3470
5056ba1d
L		 3471 resolved_to_zero = (h != NULL
3472 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3473
252b5132
RH		 3474 switch (r_type)
3475 {
3476 case R_68K_GOT8:
3477 case R_68K_GOT16:
3478 case R_68K_GOT32:
3479 /* Relocation is to the address of the entry for this symbol
3480 in the global offset table. */
3481 if (h != NULL
3482 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7fb9f789 3483 {
7fb9f789
NC		 3484 if (elf_m68k_hash_table (info)->local_gp_p)
3485 {
3486 bfd_vma sgot_output_offset;
3487 bfd_vma got_offset;
3488
ce558b89 3489 sgot = elf_hash_table (info)->sgot;
7fb9f789 3490
ce558b89 3491 if (sgot != NULL)
7fb9f789 3492 sgot_output_offset = sgot->output_offset;
ce558b89
AM		 3493 else
3494 /* In this case we have a reference to
3495 _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3496 empty.
3497 ??? Issue a warning? */
3498 sgot_output_offset = 0;
7fb9f789
NC		 3499
3500 if (got == NULL)
3501 {
3502 struct elf_m68k_bfd2got_entry *bfd2got_entry;
3503
3504 bfd2got_entry
3505 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3506 input_bfd, SEARCH, NULL);
3507
3508 if (bfd2got_entry != NULL)
3509 {
3510 got = bfd2got_entry->got;
3511 BFD_ASSERT (got != NULL);
3512
3513 got_offset = got->offset;
3514 }
3515 else
3516 /* In this case we have a reference to
3517 _GLOBAL_OFFSET_TABLE_, but no other references
3518 accessing any GOT entries.
3519 ??? Issue a warning? */
3520 got_offset = 0;
3521 }
3522 else
3523 got_offset = got->offset;
3524
3525 /* Adjust GOT pointer to point to the GOT
3526 assigned to input_bfd. */
f57718b4 3527 rel->r_addend += sgot_output_offset + got_offset;
7fb9f789
NC		 3528 }
3529 else
3530 BFD_ASSERT (got == NULL || got->offset == 0);
3531
3532 break;
3533 }
252b5132
RH		 3534 /* Fall through. */
3535 case R_68K_GOT8O:
3536 case R_68K_GOT16O:
3537 case R_68K_GOT32O:
cf869cce
NC		 3538
3539 case R_68K_TLS_LDM32:
3540 case R_68K_TLS_LDM16:
3541 case R_68K_TLS_LDM8:
3542
3543 case R_68K_TLS_GD8:
3544 case R_68K_TLS_GD16:
3545 case R_68K_TLS_GD32:
3546
3547 case R_68K_TLS_IE8:
3548 case R_68K_TLS_IE16:
3549 case R_68K_TLS_IE32:
3550
252b5132
RH		 3551 /* Relocation is the offset of the entry for this symbol in
3552 the global offset table. */
3553
3554 {
7fb9f789
NC		 3555 struct elf_m68k_got_entry_key key_;
3556 bfd_vma *off_ptr;
252b5132
RH		 3557 bfd_vma off;
3558
ce558b89
AM		 3559 sgot = elf_hash_table (info)->sgot;
3560 BFD_ASSERT (sgot != NULL);
252b5132 3561
7fb9f789
NC		 3562 if (got == NULL)
3563 {
3564 got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3565 input_bfd, MUST_FIND,
3566 NULL)->got;
3567 BFD_ASSERT (got != NULL);
3568 }
3569
3570 /* Get GOT offset for this symbol. */
cf869cce
NC		 3571 elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx,
3572 r_type);
7fb9f789
NC		 3573 off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND,
3574 NULL)->u.s2.offset;
3575 off = *off_ptr;
3576
cf869cce
NC		 3577 /* The offset must always be a multiple of 4. We use
3578 the least significant bit to record whether we have
3579 already generated the necessary reloc. */
3580 if ((off & 1) != 0)
3581 off &= ~1;
3582 else
252b5132 3583 {
cf869cce
NC		 3584 if (h != NULL
3585 /* @TLSLDM relocations are bounded to the module, in
3586 which the symbol is defined -- not to the symbol
3587 itself. */
3588 && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32)
252b5132 3589 {
cf869cce
NC		 3590 bfd_boolean dyn;
3591
3592 dyn = elf_hash_table (info)->dynamic_sections_created;
0e1862bb
L		 3593 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3594 bfd_link_pic (info),
3595 h)
3596 || (bfd_link_pic (info)
cf869cce 3597 && SYMBOL_REFERENCES_LOCAL (info, h))
5056ba1d
L		 3598 || ((ELF_ST_VISIBILITY (h->other)
3599 || resolved_to_zero)
cf869cce 3600 && h->root.type == bfd_link_hash_undefweak))
252b5132 3601 {
cf869cce
NC		 3602 /* This is actually a static link, or it is a
3603 -Bsymbolic link and the symbol is defined
3604 locally, or the symbol was forced to be local
325e58c7 3605 because of a version file. We must initialize
cf869cce
NC		 3606 this entry in the global offset table. Since
3607 the offset must always be a multiple of 4, we
3608 use the least significant bit to record whether
3609 we have initialized it already.
3610
3611 When doing a dynamic link, we create a .rela.got
3612 relocation entry to initialize the value. This
3613 is done in the finish_dynamic_symbol routine. */
3614
325e58c7
NC		 3615 elf_m68k_init_got_entry_static (info,
3616 output_bfd,
3617 r_type,
3618 sgot,
3619 off,
3620 relocation);
cf869cce 3621
7fb9f789 3622 *off_ptr |= 1;
252b5132 3623 }
cf869cce
NC		 3624 else
3625 unresolved_reloc = FALSE;
252b5132 3626 }
0e1862bb 3627 else if (bfd_link_pic (info)) /* && h == NULL */
325e58c7 3628 /* Process local symbol during dynamic link. */
252b5132 3629 {
ce558b89
AM		 3630 srela = elf_hash_table (info)->srelgot;
3631 BFD_ASSERT (srela != NULL);
cf869cce 3632
325e58c7
NC		 3633 elf_m68k_init_got_entry_local_shared (info,
3634 output_bfd,
3635 r_type,
3636 sgot,
3637 off,
3638 relocation,
3639 srela);
cf869cce
NC		 3640
3641 *off_ptr |= 1;
3642 }
0e1862bb 3643 else /* h == NULL && !bfd_link_pic (info) */
cf869cce 3644 {
325e58c7
NC		 3645 elf_m68k_init_got_entry_static (info,
3646 output_bfd,
3647 r_type,
3648 sgot,
3649 off,
3650 relocation);
252b5132 3651
7fb9f789 3652 *off_ptr |= 1;
252b5132
RH		 3653 }
3654 }
3655
cf869cce
NC		 3656 /* We don't use elf_m68k_reloc_got_type in the condition below
3657 because this is the only place where difference between
3658 R_68K_GOTx and R_68K_GOTxO relocations matters. */
3659 if (r_type == R_68K_GOT32O
252b5132 3660 || r_type == R_68K_GOT16O
cf869cce
NC		 3661 || r_type == R_68K_GOT8O
3662 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32
3663 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32
3664 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32)
252b5132 3665 {
7fb9f789
NC		 3666 /* GOT pointer is adjusted to point to the start/middle
3667 of local GOT. Adjust the offset accordingly. */
3668 BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p
3669 || off >= got->offset);
3670
3671 if (elf_m68k_hash_table (info)->local_gp_p)
3672 relocation = off - got->offset;
3673 else
3674 {
3675 BFD_ASSERT (got->offset == 0);
3676 relocation = sgot->output_offset + off;
3677 }
3678
252b5132
RH		 3679 /* This relocation does not use the addend. */
3680 rel->r_addend = 0;
3681 }
3682 else
7fb9f789
NC		 3683 relocation = (sgot->output_section->vma + sgot->output_offset
3684 + off);
252b5132
RH		 3685 }
3686 break;
3687
cf869cce
NC		 3688 case R_68K_TLS_LDO32:
3689 case R_68K_TLS_LDO16:
3690 case R_68K_TLS_LDO8:
3691 relocation -= dtpoff_base (info);
3692 break;
3693
3694 case R_68K_TLS_LE32:
3695 case R_68K_TLS_LE16:
3696 case R_68K_TLS_LE8:
3cbc1e5e 3697 if (bfd_link_dll (info))
cf869cce 3698 {
4eca0228 3699 _bfd_error_handler
695344c0 3700 /* xgettext:c-format */
2dcf00ce
AM		 3701 (_("%pB(%pA+%#" PRIx64 "): "
3702 "%s relocation not permitted in shared object"),
3703 input_bfd, input_section, (uint64_t) rel->r_offset,
3704 howto->name);
cf869cce
NC		 3705
3706 return FALSE;
3707 }
3708 else
325e58c7 3709 relocation -= tpoff_base (info);
cf869cce
NC		 3710
3711 break;
3712
252b5132
RH		 3713 case R_68K_PLT8:
3714 case R_68K_PLT16:
3715 case R_68K_PLT32:
3716 /* Relocation is to the entry for this symbol in the
3717 procedure linkage table. */
3718
3719 /* Resolve a PLTxx reloc against a local symbol directly,
3720 without using the procedure linkage table. */
3721 if (h == NULL)
3722 break;
3723
3724 if (h->plt.offset == (bfd_vma) -1
3725 || !elf_hash_table (info)->dynamic_sections_created)
3726 {
3727 /* We didn't make a PLT entry for this symbol. This
3728 happens when statically linking PIC code, or when
3729 using -Bsymbolic. */
3730 break;
3731 }
3732
ce558b89
AM		 3733 splt = elf_hash_table (info)->splt;
3734 BFD_ASSERT (splt != NULL);
252b5132
RH		 3735
3736 relocation = (splt->output_section->vma
3737 + splt->output_offset
3738 + h->plt.offset);
44f745a6 3739 unresolved_reloc = FALSE;
252b5132
RH		 3740 break;
3741
3742 case R_68K_PLT8O:
3743 case R_68K_PLT16O:
3744 case R_68K_PLT32O:
3745 /* Relocation is the offset of the entry for this symbol in
3746 the procedure linkage table. */
3747 BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
3748
ce558b89
AM		 3749 splt = elf_hash_table (info)->splt;
3750 BFD_ASSERT (splt != NULL);
252b5132
RH		 3751
3752 relocation = h->plt.offset;
44f745a6 3753 unresolved_reloc = FALSE;
252b5132
RH		 3754
3755 /* This relocation does not use the addend. */
3756 rel->r_addend = 0;
3757
3758 break;
3759
252b5132
RH		 3760 case R_68K_8:
3761 case R_68K_16:
3762 case R_68K_32:
2516a1ee
AS		 3763 case R_68K_PC8:
3764 case R_68K_PC16:
3765 case R_68K_PC32:
0e1862bb 3766 if (bfd_link_pic (info)
cf35638d 3767 && r_symndx != STN_UNDEF
252b5132 3768 && (input_section->flags & SEC_ALLOC) != 0
d2ff124f 3769 && (h == NULL
5056ba1d
L		 3770 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3771 && !resolved_to_zero)
d2ff124f 3772 || h->root.type != bfd_link_hash_undefweak)
252b5132
RH		 3773 && ((r_type != R_68K_PC8
3774 && r_type != R_68K_PC16
3775 && r_type != R_68K_PC32)
2516a1ee 3776 || !SYMBOL_CALLS_LOCAL (info, h)))
252b5132
RH		 3777 {
3778 Elf_Internal_Rela outrel;
947216bf 3779 bfd_byte *loc;
b34976b6 3780 bfd_boolean skip, relocate;
252b5132
RH		 3781
3782 /* When generating a shared object, these relocations
3783 are copied into the output file to be resolved at run
3784 time. */
3785
b34976b6
AM		 3786 skip = FALSE;
3787 relocate = FALSE;
252b5132 3788
c629eae0
JJ		 3789 outrel.r_offset =
3790 _bfd_elf_section_offset (output_bfd, info, input_section,
3791 rel->r_offset);
3792 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3793 skip = TRUE;
0bb2d96a 3794 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3795 skip = TRUE, relocate = TRUE;
252b5132
RH		 3796 outrel.r_offset += (input_section->output_section->vma
3797 + input_section->output_offset);
3798
3799 if (skip)
0bb2d96a 3800 memset (&outrel, 0, sizeof outrel);
252b5132 3801 else if (h != NULL
d2ff124f
AS		 3802 && h->dynindx != -1
3803 && (r_type == R_68K_PC8
3804 || r_type == R_68K_PC16
3805 || r_type == R_68K_PC32
0e1862bb 3806 || !bfd_link_pic (info)
a496fbc8 3807 || !SYMBOLIC_BIND (info, h)
f5385ebf 3808 || !h->def_regular))
252b5132 3809 {
252b5132 3810 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
d2ff124f 3811 outrel.r_addend = rel->r_addend;
252b5132
RH		 3812 }
3813 else
3814 {
d2ff124f 3815 /* This symbol is local, or marked to become local. */
74541ad4
AM		 3816 outrel.r_addend = relocation + rel->r_addend;
3817
252b5132
RH		 3818 if (r_type == R_68K_32)
3819 {
b34976b6 3820 relocate = TRUE;
252b5132 3821 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
252b5132
RH		 3822 }
3823 else
3824 {
3825 long indx;
3826
8517fae7 3827 if (bfd_is_abs_section (sec))
252b5132
RH		 3828 indx = 0;
3829 else if (sec == NULL || sec->owner == NULL)
3830 {
3831 bfd_set_error (bfd_error_bad_value);
b34976b6 3832 return FALSE;
252b5132
RH		 3833 }
3834 else
3835 {
3836 asection *osec;
3837
74541ad4
AM		 3838 /* We are turning this relocation into one
3839 against a section symbol. It would be
3840 proper to subtract the symbol's value,
3841 osec->vma, from the emitted reloc addend,
3842 but ld.so expects buggy relocs. */
252b5132
RH		 3843 osec = sec->output_section;
3844 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3845 if (indx == 0)
3846 {
3847 struct elf_link_hash_table *htab;
3848 htab = elf_hash_table (info);
3849 osec = htab->text_index_section;
3850 indx = elf_section_data (osec)->dynindx;
3851 }
3852 BFD_ASSERT (indx != 0);
252b5132
RH		 3853 }
3854
252b5132 3855 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 3856 }
3857 }
3858
d2ff124f
AS		 3859 sreloc = elf_section_data (input_section)->sreloc;
3860 if (sreloc == NULL)
3861 abort ();
3862
947216bf
AM		 3863 loc = sreloc->contents;
3864 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3865 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132
RH		 3866
3867 /* This reloc will be computed at runtime, so there's no
07d6d2b8
AM		 3868 need to do anything now, except for R_68K_32
3869 relocations that have been turned into
3870 R_68K_RELATIVE. */
252b5132
RH		 3871 if (!relocate)
3872 continue;
3873 }
3874
3875 break;
3876
3877 case R_68K_GNU_VTINHERIT:
3878 case R_68K_GNU_VTENTRY:
3879 /* These are no-ops in the end. */
3880 continue;
3881
3882 default:
3883 break;
3884 }
3885
44f745a6
AS		 3886 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3887 because such sections are not SEC_ALLOC and thus ld.so will
3888 not process them. */
3889 if (unresolved_reloc
3890 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3891 && h->def_dynamic)
3892 && _bfd_elf_section_offset (output_bfd, info, input_section,
3893 rel->r_offset) != (bfd_vma) -1)
44f745a6 3894 {
4eca0228 3895 _bfd_error_handler
695344c0 3896 /* xgettext:c-format */
2dcf00ce
AM		 3897 (_("%pB(%pA+%#" PRIx64 "): "
3898 "unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3899 input_bfd,
3900 input_section,
2dcf00ce 3901 (uint64_t) rel->r_offset,
843fe662 3902 howto->name,
44f745a6
AS		 3903 h->root.root.string);
3904 return FALSE;
3905 }
3906
cf35638d 3907 if (r_symndx != STN_UNDEF
cf869cce
NC		 3908 && r_type != R_68K_NONE
3909 && (h == NULL
3910 || h->root.type == bfd_link_hash_defined
3911 || h->root.type == bfd_link_hash_defweak))
3912 {
3913 char sym_type;
3914
3915 sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type;
3916
3917 if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS))
3918 {
3919 const char *name;
3920
3921 if (h != NULL)
3922 name = h->root.root.string;
3923 else
3924 {
3925 name = (bfd_elf_string_from_elf_section
3926 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3927 if (name == NULL || *name == '\0')
3928 name = bfd_section_name (input_bfd, sec);
3929 }
3930
4eca0228 3931 _bfd_error_handler
cf869cce 3932 ((sym_type == STT_TLS
695344c0 3933 /* xgettext:c-format */
2dcf00ce 3934 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 3935 /* xgettext:c-format */
2dcf00ce 3936 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
cf869cce
NC		 3937 input_bfd,
3938 input_section,
2dcf00ce 3939 (uint64_t) rel->r_offset,
cf869cce
NC		 3940 howto->name,
3941 name);
3942 }
3943 }
3944
252b5132
RH		 3945 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3946 contents, rel->r_offset,
3947 relocation, rel->r_addend);
3948
3949 if (r != bfd_reloc_ok)
3950 {
44f745a6
AS		 3951 const char *name;
3952
3953 if (h != NULL)
3954 name = h->root.root.string;
3955 else
252b5132 3956 {
44f745a6
AS		 3957 name = bfd_elf_string_from_elf_section (input_bfd,
3958 symtab_hdr->sh_link,
3959 sym->st_name);
3960 if (name == NULL)
3961 return FALSE;
3962 if (*name == '\0')
3963 name = bfd_section_name (input_bfd, sec);
3964 }
252b5132 3965
44f745a6 3966 if (r == bfd_reloc_overflow)
1a72702b
AM		 3967 (*info->callbacks->reloc_overflow)
3968 (info, (h ? &h->root : NULL), name, howto->name,
3969 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
44f745a6
AS		 3970 else
3971 {
4eca0228 3972 _bfd_error_handler
695344c0 3973 /* xgettext:c-format */
2dcf00ce 3974 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3975 input_bfd, input_section,
2dcf00ce 3976 (uint64_t) rel->r_offset, name, (int) r);
44f745a6 3977 return FALSE;
252b5132
RH		 3978 }
3979 }
3980 }
3981
b34976b6 3982 return TRUE;
252b5132
RH		 3983}
3984
cc3e26be
RS		 3985/* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
3986 into section SEC. */
3987
3988static void
3989elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
3990{
3991 /* Make VALUE PC-relative. */
3992 value -= sec->output_section->vma + offset;
3993
3994 /* Apply any in-place addend. */
3995 value += bfd_get_32 (sec->owner, sec->contents + offset);
3996
3997 bfd_put_32 (sec->owner, value, sec->contents + offset);
3998}
3999
252b5132
RH		 4000/* Finish up dynamic symbol handling. We set the contents of various
4001 dynamic sections here. */
4002
b34976b6 4003static bfd_boolean
2c3fc389
NC		 4004elf_m68k_finish_dynamic_symbol (bfd *output_bfd,
4005 struct bfd_link_info *info,
4006 struct elf_link_hash_entry *h,
4007 Elf_Internal_Sym *sym)
252b5132
RH		 4008{
4009 bfd *dynobj;
4010
4011 dynobj = elf_hash_table (info)->dynobj;
4012
4013 if (h->plt.offset != (bfd_vma) -1)
4014 {
cc3e26be 4015 const struct elf_m68k_plt_info *plt_info;
252b5132
RH		 4016 asection *splt;
4017 asection *sgot;
4018 asection *srela;
4019 bfd_vma plt_index;
4020 bfd_vma got_offset;
4021 Elf_Internal_Rela rela;
947216bf 4022 bfd_byte *loc;
252b5132
RH		 4023
4024 /* This symbol has an entry in the procedure linkage table. Set
4025 it up. */
4026
4027 BFD_ASSERT (h->dynindx != -1);
4028
cc3e26be 4029 plt_info = elf_m68k_hash_table (info)->plt_info;
ce558b89
AM		 4030 splt = elf_hash_table (info)->splt;
4031 sgot = elf_hash_table (info)->sgotplt;
4032 srela = elf_hash_table (info)->srelplt;
252b5132
RH		 4033 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
4034
4035 /* Get the index in the procedure linkage table which
4036 corresponds to this symbol. This is the index of this symbol
4037 in all the symbols for which we are making plt entries. The
4038 first entry in the procedure linkage table is reserved. */
cc3e26be 4039 plt_index = (h->plt.offset / plt_info->size) - 1;
252b5132
RH		 4040
4041 /* Get the offset into the .got table of the entry that
4042 corresponds to this function. Each .got entry is 4 bytes.
4043 The first three are reserved. */
4044 got_offset = (plt_index + 3) * 4;
4045
cc3e26be
RS		 4046 memcpy (splt->contents + h->plt.offset,
4047 plt_info->symbol_entry,
4048 plt_info->size);
4049
4050 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
4051 (sgot->output_section->vma
4052 + sgot->output_offset
4053 + got_offset));
252b5132
RH		 4054
4055 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
cc3e26be
RS		 4056 splt->contents
4057 + h->plt.offset
4058 + plt_info->symbol_resolve_entry + 2);
4059
4060 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
4061 splt->output_section->vma);
252b5132
RH		 4062
4063 /* Fill in the entry in the global offset table. */
4064 bfd_put_32 (output_bfd,
4065 (splt->output_section->vma
4066 + splt->output_offset
4067 + h->plt.offset
cc3e26be 4068 + plt_info->symbol_resolve_entry),
252b5132
RH		 4069 sgot->contents + got_offset);
4070
4071 /* Fill in the entry in the .rela.plt section. */
4072 rela.r_offset = (sgot->output_section->vma
4073 + sgot->output_offset
4074 + got_offset);
4075 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
4076 rela.r_addend = 0;
947216bf
AM		 4077 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
4078 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
252b5132 4079
f5385ebf 4080 if (!h->def_regular)
252b5132
RH		 4081 {
4082 /* Mark the symbol as undefined, rather than as defined in
4083 the .plt section. Leave the value alone. */
4084 sym->st_shndx = SHN_UNDEF;
4085 }
4086 }
4087
7fb9f789 4088 if (elf_m68k_hash_entry (h)->glist != NULL)
252b5132
RH		 4089 {
4090 asection *sgot;
4091 asection *srela;
7fb9f789 4092 struct elf_m68k_got_entry *got_entry;
252b5132
RH		 4093
4094 /* This symbol has an entry in the global offset table. Set it
4095 up. */
4096
ce558b89
AM		 4097 sgot = elf_hash_table (info)->sgot;
4098 srela = elf_hash_table (info)->srelgot;
252b5132
RH		 4099 BFD_ASSERT (sgot != NULL && srela != NULL);
4100
7fb9f789
NC		 4101 got_entry = elf_m68k_hash_entry (h)->glist;
4102
4103 while (got_entry != NULL)
252b5132 4104 {
325e58c7 4105 enum elf_m68k_reloc_type r_type;
cf869cce
NC		 4106 bfd_vma got_entry_offset;
4107
325e58c7 4108 r_type = got_entry->key_.type;
cf869cce 4109 got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1;
7fb9f789 4110
7fb9f789
NC		 4111 /* If this is a -Bsymbolic link, and the symbol is defined
4112 locally, we just want to emit a RELATIVE reloc. Likewise if
4113 the symbol was forced to be local because of a version file.
cf869cce 4114 The entry in the global offset table already have been
7fb9f789 4115 initialized in the relocate_section function. */
0e1862bb 4116 if (bfd_link_pic (info)
2516a1ee 4117 && SYMBOL_REFERENCES_LOCAL (info, h))
7fb9f789 4118 {
325e58c7 4119 bfd_vma relocation;
cf869cce 4120
325e58c7
NC		 4121 relocation = bfd_get_signed_32 (output_bfd,
4122 (sgot->contents
4123 + got_entry_offset));
4124
4125 /* Undo TP bias. */
4126 switch (elf_m68k_reloc_got_type (r_type))
cf869cce
NC		 4127 {
4128 case R_68K_GOT32O:
325e58c7 4129 case R_68K_TLS_LDM32:
cf869cce
NC		 4130 break;
4131
4132 case R_68K_TLS_GD32:
93b3ac75
AS		 4133 /* The value for this relocation is actually put in
4134 the second GOT slot. */
4135 relocation = bfd_get_signed_32 (output_bfd,
4136 (sgot->contents
4137 + got_entry_offset + 4));
325e58c7 4138 relocation += dtpoff_base (info);
cf869cce
NC		 4139 break;
4140
4141 case R_68K_TLS_IE32:
325e58c7 4142 relocation += tpoff_base (info);
cf869cce
NC		 4143 break;
4144
4145 default:
4146 BFD_ASSERT (FALSE);
cf869cce
NC		 4147 }
4148
325e58c7
NC		 4149 elf_m68k_init_got_entry_local_shared (info,
4150 output_bfd,
4151 r_type,
4152 sgot,
4153 got_entry_offset,
4154 relocation,
4155 srela);
7fb9f789
NC		 4156 }
4157 else
4158 {
325e58c7
NC		 4159 Elf_Internal_Rela rela;
4160
cf869cce
NC		 4161 /* Put zeros to GOT slots that will be initialized
4162 at run-time. */
4163 {
4164 bfd_vma n_slots;
4165
4166 n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type);
4167 while (n_slots--)
4168 bfd_put_32 (output_bfd, (bfd_vma) 0,
4169 (sgot->contents + got_entry_offset
4170 + 4 * n_slots));
4171 }
4172
7fb9f789 4173 rela.r_addend = 0;
325e58c7
NC		 4174 rela.r_offset = (sgot->output_section->vma
4175 + sgot->output_offset
4176 + got_entry_offset);
252b5132 4177
325e58c7 4178 switch (elf_m68k_reloc_got_type (r_type))
cf869cce
NC		 4179 {
4180 case R_68K_GOT32O:
4181 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
4182 elf_m68k_install_rela (output_bfd, srela, &rela);
4183 break;
4184
4185 case R_68K_TLS_GD32:
4186 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32);
4187 elf_m68k_install_rela (output_bfd, srela, &rela);
4188
4189 rela.r_offset += 4;
4190 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32);
4191 elf_m68k_install_rela (output_bfd, srela, &rela);
4192 break;
4193
4194 case R_68K_TLS_IE32:
4195 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32);
4196 elf_m68k_install_rela (output_bfd, srela, &rela);
4197 break;
4198
4199 default:
4200 BFD_ASSERT (FALSE);
4201 break;
4202 }
4203 }
7fb9f789
NC		 4204
4205 got_entry = got_entry->u.s2.next;
4206 }
252b5132
RH		 4207 }
4208
f5385ebf 4209 if (h->needs_copy)
252b5132
RH		 4210 {
4211 asection *s;
4212 Elf_Internal_Rela rela;
947216bf 4213 bfd_byte *loc;
252b5132
RH		 4214
4215 /* This symbol needs a copy reloc. Set it up. */
4216
4217 BFD_ASSERT (h->dynindx != -1
4218 && (h->root.type == bfd_link_hash_defined
4219 || h->root.type == bfd_link_hash_defweak));
4220
3d4d4302 4221 s = bfd_get_linker_section (dynobj, ".rela.bss");
252b5132
RH		 4222 BFD_ASSERT (s != NULL);
4223
4224 rela.r_offset = (h->root.u.def.value
4225 + h->root.u.def.section->output_section->vma
4226 + h->root.u.def.section->output_offset);
4227 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
4228 rela.r_addend = 0;
947216bf
AM		 4229 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4230 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
252b5132
RH		 4231 }
4232
b34976b6 4233 return TRUE;
252b5132
RH		 4234}
4235
4236/* Finish up the dynamic sections. */
4237
b34976b6 4238static bfd_boolean
2c3fc389 4239elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132
RH		 4240{
4241 bfd *dynobj;
4242 asection *sgot;
4243 asection *sdyn;
4244
4245 dynobj = elf_hash_table (info)->dynobj;
4246
ce558b89 4247 sgot = elf_hash_table (info)->sgotplt;
252b5132 4248 BFD_ASSERT (sgot != NULL);
3d4d4302 4249 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
252b5132
RH		 4250
4251 if (elf_hash_table (info)->dynamic_sections_created)
4252 {
4253 asection *splt;
4254 Elf32_External_Dyn *dyncon, *dynconend;
4255
ce558b89 4256 splt = elf_hash_table (info)->splt;
252b5132
RH		 4257 BFD_ASSERT (splt != NULL && sdyn != NULL);
4258
4259 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4260 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4261 for (; dyncon < dynconend; dyncon++)
4262 {
4263 Elf_Internal_Dyn dyn;
252b5132
RH		 4264 asection *s;
4265
4266 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4267
4268 switch (dyn.d_tag)
4269 {
4270 default:
4271 break;
4272
4273 case DT_PLTGOT:
ce558b89 4274 s = elf_hash_table (info)->sgotplt;
252b5132
RH		 4275 goto get_vma;
4276 case DT_JMPREL:
ce558b89 4277 s = elf_hash_table (info)->srelplt;
252b5132 4278 get_vma:
4ade44b7 4279 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4280 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4281 break;
4282
4283 case DT_PLTRELSZ:
ce558b89 4284 s = elf_hash_table (info)->srelplt;
eea6121a 4285 dyn.d_un.d_val = s->size;
252b5132
RH		 4286 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4287 break;
252b5132
RH		 4288 }
4289 }
4290
4291 /* Fill in the first entry in the procedure linkage table. */
eea6121a 4292 if (splt->size > 0)
252b5132 4293 {
cc3e26be
RS		 4294 const struct elf_m68k_plt_info *plt_info;
4295
4296 plt_info = elf_m68k_hash_table (info)->plt_info;
4297 memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
4298
4299 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
4300 (sgot->output_section->vma
4301 + sgot->output_offset
4302 + 4));
4303
4304 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
4305 (sgot->output_section->vma
4306 + sgot->output_offset
4307 + 8));
4308
4309 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4310 = plt_info->size;
252b5132 4311 }
252b5132
RH		 4312 }
4313
4314 /* Fill in the first three entries in the global offset table. */
eea6121a 4315 if (sgot->size > 0)
252b5132
RH		 4316 {
4317 if (sdyn == NULL)
4318 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4319 else
4320 bfd_put_32 (output_bfd,
4321 sdyn->output_section->vma + sdyn->output_offset,
4322 sgot->contents);
4323 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4324 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4325 }
4326
4327 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4328
b34976b6 4329 return TRUE;
252b5132
RH		 4330}
4331
0752970e
NC		 4332/* Given a .data section and a .emreloc in-memory section, store
4333 relocation information into the .emreloc section which can be
4334 used at runtime to relocate the section. This is called by the
4335 linker when the --embedded-relocs switch is used. This is called
4336 after the add_symbols entry point has been called for all the
4337 objects, and before the final_link entry point is called. */
4338
b34976b6 4339bfd_boolean
e6c7cdec
TS		 4340bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info,
4341 asection *datasec, asection *relsec,
4342 char **errmsg)
0752970e
NC		 4343{
4344 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc
AM		 4345 Elf_Internal_Sym *isymbuf = NULL;
4346 Elf_Internal_Rela *internal_relocs = NULL;
0752970e
NC		 4347 Elf_Internal_Rela *irel, *irelend;
4348 bfd_byte *p;
dc810e39 4349 bfd_size_type amt;
0752970e 4350
0e1862bb 4351 BFD_ASSERT (! bfd_link_relocatable (info));
0752970e
NC		 4352
4353 *errmsg = NULL;
4354
4355 if (datasec->reloc_count == 0)
b34976b6 4356 return TRUE;
0752970e
NC		 4357
4358 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9ad5cbcf 4359
0752970e 4360 /* Get a copy of the native relocations. */
45d6a902 4361 internal_relocs = (_bfd_elf_link_read_relocs
2c3fc389 4362 (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL,
0752970e
NC		 4363 info->keep_memory));
4364 if (internal_relocs == NULL)
4365 goto error_return;
0752970e 4366
dc810e39
AM		 4367 amt = (bfd_size_type) datasec->reloc_count * 12;
4368 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
0752970e
NC		 4369 if (relsec->contents == NULL)
4370 goto error_return;
4371
4372 p = relsec->contents;
4373
4374 irelend = internal_relocs + datasec->reloc_count;
4375 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
4376 {
4377 asection *targetsec;
4378
4379 /* We are going to write a four byte longword into the runtime
4380 reloc section. The longword will be the address in the data
4381 section which must be relocated. It is followed by the name
4382 of the target section NUL-padded or truncated to 8
4383 characters. */
4384
4385 /* We can only relocate absolute longword relocs at run time. */
4386 if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
4387 {
0aa13fee 4388 *errmsg = _("unsupported relocation type");
0752970e
NC		 4389 bfd_set_error (bfd_error_bad_value);
4390 goto error_return;
4391 }
4392
4393 /* Get the target section referred to by the reloc. */
4394 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4395 {
0752970e 4396 /* A local symbol. */
6cdc0ccc
AM		 4397 Elf_Internal_Sym *isym;
4398
4399 /* Read this BFD's local symbols if we haven't done so already. */
4400 if (isymbuf == NULL)
4401 {
4402 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4403 if (isymbuf == NULL)
4404 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4405 symtab_hdr->sh_info, 0,
4406 NULL, NULL, NULL);
4407 if (isymbuf == NULL)
4408 goto error_return;
4409 }
0752970e 4410
6cdc0ccc
AM		 4411 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4412 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
0752970e
NC		 4413 }
4414 else
4415 {
4416 unsigned long indx;
4417 struct elf_link_hash_entry *h;
4418
4419 /* An external symbol. */
4420 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4421 h = elf_sym_hashes (abfd)[indx];
4422 BFD_ASSERT (h != NULL);
4423 if (h->root.type == bfd_link_hash_defined
4424 || h->root.type == bfd_link_hash_defweak)
4425 targetsec = h->root.u.def.section;
4426 else
4427 targetsec = NULL;
4428 }
4429
4430 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
4431 memset (p + 4, 0, 8);
4432 if (targetsec != NULL)
f075ee0c 4433 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
0752970e 4434 }
c3668558 4435
6cdc0ccc
AM		 4436 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4437 free (isymbuf);
4438 if (internal_relocs != NULL
4439 && elf_section_data (datasec)->relocs != internal_relocs)
4440 free (internal_relocs);
b34976b6 4441 return TRUE;
0752970e
NC		 4442
4443error_return:
6cdc0ccc
AM		 4444 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4445 free (isymbuf);
4446 if (internal_relocs != NULL
4447 && elf_section_data (datasec)->relocs != internal_relocs)
4448 free (internal_relocs);
b34976b6 4449 return FALSE;
0752970e
NC		 4450}
4451
7fb9f789
NC		 4452/* Set target options. */
4453
4454void
4455bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling)
4456{
4457 struct elf_m68k_link_hash_table *htab;
b1345da3
MR		 4458 bfd_boolean use_neg_got_offsets_p;
4459 bfd_boolean allow_multigot_p;
4460 bfd_boolean local_gp_p;
7fb9f789
NC		 4461
4462 switch (got_handling)
4463 {
4464 case 0:
4465 /* --got=single. */
b1345da3
MR		 4466 local_gp_p = FALSE;
4467 use_neg_got_offsets_p = FALSE;
4468 allow_multigot_p = FALSE;
7fb9f789
NC		 4469 break;
4470
4471 case 1:
4472 /* --got=negative. */
b1345da3
MR		 4473 local_gp_p = TRUE;
4474 use_neg_got_offsets_p = TRUE;
4475 allow_multigot_p = FALSE;
7fb9f789
NC		 4476 break;
4477
4478 case 2:
4479 /* --got=multigot. */
b1345da3
MR		 4480 local_gp_p = TRUE;
4481 use_neg_got_offsets_p = TRUE;
4482 allow_multigot_p = TRUE;
7fb9f789
NC		 4483 break;
4484
4485 default:
4486 BFD_ASSERT (FALSE);
b1345da3
MR		 4487 return;
4488 }
4489
4490 htab = elf_m68k_hash_table (info);
4491 if (htab != NULL)
4492 {
4493 htab->local_gp_p = local_gp_p;
4494 htab->use_neg_got_offsets_p = use_neg_got_offsets_p;
4495 htab->allow_multigot_p = allow_multigot_p;
7fb9f789
NC		 4496 }
4497}
4498
aa91b392 4499static enum elf_reloc_type_class
7e612e98
AM		 4500elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4501 const asection *rel_sec ATTRIBUTE_UNUSED,
4502 const Elf_Internal_Rela *rela)
aa91b392 4503{
f51e552e 4504 switch ((int) ELF32_R_TYPE (rela->r_info))
aa91b392
AS		 4505 {
4506 case R_68K_RELATIVE:
4507 return reloc_class_relative;
4508 case R_68K_JMP_SLOT:
4509 return reloc_class_plt;
4510 case R_68K_COPY:
4511 return reloc_class_copy;
4512 default:
4513 return reloc_class_normal;
4514 }
4515}
4516
1715e0e3
AS		 4517/* Return address for Ith PLT stub in section PLT, for relocation REL
4518 or (bfd_vma) -1 if it should not be included. */
4519
4520static bfd_vma
4521elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
4522 const arelent *rel ATTRIBUTE_UNUSED)
4523{
cc3e26be 4524 return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
1715e0e3
AS		 4525}
4526
8bbeae90
AS		 4527/* Support for core dump NOTE sections. */
4528
4529static bfd_boolean
4530elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
4531{
4532 int offset;
4533 size_t size;
4534
4535 switch (note->descsz)
4536 {
4537 default:
4538 return FALSE;
4539
4540 case 154: /* Linux/m68k */
4541 /* pr_cursig */
228e534f 4542 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
8bbeae90
AS		 4543
4544 /* pr_pid */
228e534f 4545 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
8bbeae90
AS		 4546
4547 /* pr_reg */
4548 offset = 70;
4549 size = 80;
4550
4551 break;
4552 }
4553
4554 /* Make a ".reg/999" section. */
4555 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4556 size, note->descpos + offset);
4557}
4558
4559static bfd_boolean
4560elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4561{
4562 switch (note->descsz)
4563 {
4564 default:
4565 return FALSE;
4566
4567 case 124: /* Linux/m68k elf_prpsinfo. */
228e534f 4568 elf_tdata (abfd)->core->pid
8bbeae90 4569 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 4570 elf_tdata (abfd)->core->program
8bbeae90 4571 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 4572 elf_tdata (abfd)->core->command
8bbeae90
AS		 4573 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4574 }
4575
4576 /* Note that for some reason, a spurious space is tacked
4577 onto the end of the args in some (at least one anyway)
4578 implementations, so strip it off if it exists. */
4579 {
228e534f 4580 char *command = elf_tdata (abfd)->core->command;
8bbeae90
AS		 4581 int n = strlen (command);
4582
4583 if (n > 0 && command[n - 1] == ' ')
4584 command[n - 1] = '\0';
4585 }
4586
4587 return TRUE;
4588}
4589
f6ec89e7
AS		 4590/* Hook called by the linker routine which adds symbols from an object
4591 file. */
4592
4593static bfd_boolean
4594elf_m68k_add_symbol_hook (bfd *abfd,
4595 struct bfd_link_info *info,
4596 Elf_Internal_Sym *sym,
4597 const char **namep ATTRIBUTE_UNUSED,
4598 flagword *flagsp ATTRIBUTE_UNUSED,
4599 asection **secp ATTRIBUTE_UNUSED,
4600 bfd_vma *valp ATTRIBUTE_UNUSED)
4601{
a43942db 4602 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM		 4603 && (abfd->flags & DYNAMIC) == 0
4604 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 4605 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
f6ec89e7
AS		 4606
4607 return TRUE;
4608}
4609
6d00b590 4610#define TARGET_BIG_SYM m68k_elf32_vec
252b5132
RH		 4611#define TARGET_BIG_NAME "elf32-m68k"
4612#define ELF_MACHINE_CODE EM_68K
4613#define ELF_MAXPAGESIZE 0x2000
4614#define elf_backend_create_dynamic_sections \
4615 _bfd_elf_create_dynamic_sections
4616#define bfd_elf32_bfd_link_hash_table_create \
4617 elf_m68k_link_hash_table_create
7fb9f789 4618#define bfd_elf32_bfd_final_link bfd_elf_final_link
252b5132
RH		 4619
4620#define elf_backend_check_relocs elf_m68k_check_relocs
cc3e26be
RS		 4621#define elf_backend_always_size_sections \
4622 elf_m68k_always_size_sections
252b5132
RH		 4623#define elf_backend_adjust_dynamic_symbol \
4624 elf_m68k_adjust_dynamic_symbol
4625#define elf_backend_size_dynamic_sections \
4626 elf_m68k_size_dynamic_sections
fc9f1df9 4627#define elf_backend_final_write_processing elf_m68k_final_write_processing
74541ad4 4628#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH		 4629#define elf_backend_relocate_section elf_m68k_relocate_section
4630#define elf_backend_finish_dynamic_symbol \
4631 elf_m68k_finish_dynamic_symbol
4632#define elf_backend_finish_dynamic_sections \
4633 elf_m68k_finish_dynamic_sections
4634#define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
7fb9f789 4635#define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
9e1281c7 4636#define bfd_elf32_bfd_merge_private_bfd_data \
07d6d2b8 4637 elf32_m68k_merge_private_bfd_data
9e1281c7 4638#define bfd_elf32_bfd_set_private_flags \
07d6d2b8 4639 elf32_m68k_set_private_flags
9e1281c7 4640#define bfd_elf32_bfd_print_private_bfd_data \
07d6d2b8 4641 elf32_m68k_print_private_bfd_data
aa91b392 4642#define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
1715e0e3 4643#define elf_backend_plt_sym_val elf_m68k_plt_sym_val
266abb8f 4644#define elf_backend_object_p elf32_m68k_object_p
8bbeae90
AS		 4645#define elf_backend_grok_prstatus elf_m68k_grok_prstatus
4646#define elf_backend_grok_psinfo elf_m68k_grok_psinfo
f6ec89e7 4647#define elf_backend_add_symbol_hook elf_m68k_add_symbol_hook
9e1281c7 4648
252b5132 4649#define elf_backend_can_gc_sections 1
51b64d56 4650#define elf_backend_can_refcount 1
252b5132
RH		 4651#define elf_backend_want_got_plt 1
4652#define elf_backend_plt_readonly 1
4653#define elf_backend_want_plt_sym 0
4654#define elf_backend_got_header_size 12
b491616a 4655#define elf_backend_rela_normal 1
64f52338 4656#define elf_backend_dtrel_excludes_plt 1
252b5132 4657
a2f63b2e
MR		 4658#define elf_backend_linux_prpsinfo32_ugid16 TRUE
4659
252b5132 4660#include "elf32-target.h"
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