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Revert accidental check-in.
[deliverable/binutils-gdb.git] / bfd / elf32-m68k.c
CommitLineData
252b5132 1/* Motorola 68k series support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
1d7e9d18 3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
7686d77d 4 Free Software Foundation, Inc.
252b5132 5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
28#include "elf/m68k.h"
266abb8f 29#include "opcode/m68k.h"
252b5132
RH		 30
31static reloc_howto_type *reloc_type_lookup
32 PARAMS ((bfd *, bfd_reloc_code_real_type));
33static void rtype_to_howto
947216bf 34 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
252b5132
RH		 35static struct bfd_hash_entry *elf_m68k_link_hash_newfunc
36 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
37static struct bfd_link_hash_table *elf_m68k_link_hash_table_create
38 PARAMS ((bfd *));
b34976b6 39static bfd_boolean elf_m68k_check_relocs
252b5132
RH		 40 PARAMS ((bfd *, struct bfd_link_info *, asection *,
41 const Elf_Internal_Rela *));
b34976b6 42static bfd_boolean elf_m68k_adjust_dynamic_symbol
252b5132 43 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
b34976b6 44static bfd_boolean elf_m68k_size_dynamic_sections
252b5132 45 PARAMS ((bfd *, struct bfd_link_info *));
0cca5f05
AS		 46static bfd_boolean elf_m68k_discard_copies
47 PARAMS ((struct elf_link_hash_entry *, PTR));
b34976b6 48static bfd_boolean elf_m68k_relocate_section
252b5132
RH		 49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
b34976b6 51static bfd_boolean elf_m68k_finish_dynamic_symbol
252b5132
RH		 52 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
53 Elf_Internal_Sym *));
b34976b6 54static bfd_boolean elf_m68k_finish_dynamic_sections
252b5132
RH		 55 PARAMS ((bfd *, struct bfd_link_info *));
56
b34976b6 57static bfd_boolean elf32_m68k_set_private_flags
9e1281c7 58 PARAMS ((bfd *, flagword));
b34976b6 59static bfd_boolean elf32_m68k_merge_private_bfd_data
9e1281c7 60 PARAMS ((bfd *, bfd *));
b34976b6 61static bfd_boolean elf32_m68k_print_private_bfd_data
9e1281c7 62 PARAMS ((bfd *, PTR));
aa91b392 63static enum elf_reloc_type_class elf32_m68k_reloc_type_class
f51e552e 64 PARAMS ((const Elf_Internal_Rela *));
9e1281c7 65
252b5132 66static reloc_howto_type howto_table[] = {
b34976b6
AM		 67 HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE),
68 HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE),
69 HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE),
70 HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE),
71 HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE),
72 HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE),
73 HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE),
74 HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE),
75 HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE),
76 HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE),
77 HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE),
78 HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE),
79 HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE),
80 HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE),
81 HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE),
82 HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE),
83 HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE),
84 HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE),
85 HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE),
86 HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE),
87 HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE),
88 HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE),
89 HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE),
ae9a127f 90 /* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 91 HOWTO (R_68K_GNU_VTINHERIT, /* type */
92 0, /* rightshift */
93 2, /* size (0 = byte, 1 = short, 2 = long) */
94 0, /* bitsize */
b34976b6 95 FALSE, /* pc_relative */
252b5132
RH		 96 0, /* bitpos */
97 complain_overflow_dont, /* complain_on_overflow */
98 NULL, /* special_function */
99 "R_68K_GNU_VTINHERIT", /* name */
b34976b6 100 FALSE, /* partial_inplace */
252b5132
RH		 101 0, /* src_mask */
102 0, /* dst_mask */
b34976b6 103 FALSE),
ae9a127f 104 /* GNU extension to record C++ vtable member usage. */
252b5132
RH		 105 HOWTO (R_68K_GNU_VTENTRY, /* type */
106 0, /* rightshift */
107 2, /* size (0 = byte, 1 = short, 2 = long) */
108 0, /* bitsize */
b34976b6 109 FALSE, /* pc_relative */
252b5132
RH		 110 0, /* bitpos */
111 complain_overflow_dont, /* complain_on_overflow */
112 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
113 "R_68K_GNU_VTENTRY", /* name */
b34976b6 114 FALSE, /* partial_inplace */
252b5132
RH		 115 0, /* src_mask */
116 0, /* dst_mask */
b34976b6 117 FALSE),
cf869cce
NC		 118
119 /* TLS general dynamic variable reference. */
120 HOWTO (R_68K_TLS_GD32, /* type */
121 0, /* rightshift */
122 2, /* size (0 = byte, 1 = short, 2 = long) */
123 32, /* bitsize */
124 FALSE, /* pc_relative */
125 0, /* bitpos */
126 complain_overflow_bitfield, /* complain_on_overflow */
127 bfd_elf_generic_reloc, /* special_function */
128 "R_68K_TLS_GD32", /* name */
129 FALSE, /* partial_inplace */
130 0, /* src_mask */
131 0xffffffff, /* dst_mask */
132 FALSE), /* pcrel_offset */
133
134 HOWTO (R_68K_TLS_GD16, /* type */
135 0, /* rightshift */
136 1, /* size (0 = byte, 1 = short, 2 = long) */
137 16, /* bitsize */
138 FALSE, /* pc_relative */
139 0, /* bitpos */
140 complain_overflow_signed, /* complain_on_overflow */
141 bfd_elf_generic_reloc, /* special_function */
142 "R_68K_TLS_GD16", /* name */
143 FALSE, /* partial_inplace */
144 0, /* src_mask */
145 0x0000ffff, /* dst_mask */
146 FALSE), /* pcrel_offset */
147
148 HOWTO (R_68K_TLS_GD8, /* type */
149 0, /* rightshift */
150 0, /* size (0 = byte, 1 = short, 2 = long) */
151 8, /* bitsize */
152 FALSE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_signed, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_68K_TLS_GD8", /* name */
157 FALSE, /* partial_inplace */
158 0, /* src_mask */
159 0x000000ff, /* dst_mask */
160 FALSE), /* pcrel_offset */
161
162 /* TLS local dynamic variable reference. */
163 HOWTO (R_68K_TLS_LDM32, /* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 FALSE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_bitfield, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_68K_TLS_LDM32", /* name */
172 FALSE, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 FALSE), /* pcrel_offset */
176
177 HOWTO (R_68K_TLS_LDM16, /* type */
178 0, /* rightshift */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
180 16, /* bitsize */
181 FALSE, /* pc_relative */
182 0, /* bitpos */
183 complain_overflow_signed, /* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_68K_TLS_LDM16", /* name */
186 FALSE, /* partial_inplace */
187 0, /* src_mask */
188 0x0000ffff, /* dst_mask */
189 FALSE), /* pcrel_offset */
190
191 HOWTO (R_68K_TLS_LDM8, /* type */
192 0, /* rightshift */
193 0, /* size (0 = byte, 1 = short, 2 = long) */
194 8, /* bitsize */
195 FALSE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_signed, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_68K_TLS_LDM8", /* name */
200 FALSE, /* partial_inplace */
201 0, /* src_mask */
202 0x000000ff, /* dst_mask */
203 FALSE), /* pcrel_offset */
204
205 HOWTO (R_68K_TLS_LDO32, /* type */
206 0, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 32, /* bitsize */
209 FALSE, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_bitfield, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_68K_TLS_LDO32", /* name */
214 FALSE, /* partial_inplace */
215 0, /* src_mask */
216 0xffffffff, /* dst_mask */
217 FALSE), /* pcrel_offset */
218
219 HOWTO (R_68K_TLS_LDO16, /* type */
220 0, /* rightshift */
221 1, /* size (0 = byte, 1 = short, 2 = long) */
222 16, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_68K_TLS_LDO16", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x0000ffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 HOWTO (R_68K_TLS_LDO8, /* type */
234 0, /* rightshift */
235 0, /* size (0 = byte, 1 = short, 2 = long) */
236 8, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_signed, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_68K_TLS_LDO8", /* name */
242 FALSE, /* partial_inplace */
243 0, /* src_mask */
244 0x000000ff, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 /* TLS initial execution variable reference. */
248 HOWTO (R_68K_TLS_IE32, /* type */
249 0, /* rightshift */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
251 32, /* bitsize */
252 FALSE, /* pc_relative */
253 0, /* bitpos */
254 complain_overflow_bitfield, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_68K_TLS_IE32", /* name */
257 FALSE, /* partial_inplace */
258 0, /* src_mask */
259 0xffffffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
261
262 HOWTO (R_68K_TLS_IE16, /* type */
263 0, /* rightshift */
264 1, /* size (0 = byte, 1 = short, 2 = long) */
265 16, /* bitsize */
266 FALSE, /* pc_relative */
267 0, /* bitpos */
268 complain_overflow_signed, /* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_68K_TLS_IE16", /* name */
271 FALSE, /* partial_inplace */
272 0, /* src_mask */
273 0x0000ffff, /* dst_mask */
274 FALSE), /* pcrel_offset */
275
276 HOWTO (R_68K_TLS_IE8, /* type */
277 0, /* rightshift */
278 0, /* size (0 = byte, 1 = short, 2 = long) */
279 8, /* bitsize */
280 FALSE, /* pc_relative */
281 0, /* bitpos */
282 complain_overflow_signed, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_68K_TLS_IE8", /* name */
285 FALSE, /* partial_inplace */
286 0, /* src_mask */
287 0x000000ff, /* dst_mask */
288 FALSE), /* pcrel_offset */
289
290 /* TLS local execution variable reference. */
291 HOWTO (R_68K_TLS_LE32, /* type */
292 0, /* rightshift */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
294 32, /* bitsize */
295 FALSE, /* pc_relative */
296 0, /* bitpos */
297 complain_overflow_bitfield, /* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_68K_TLS_LE32", /* name */
300 FALSE, /* partial_inplace */
301 0, /* src_mask */
302 0xffffffff, /* dst_mask */
303 FALSE), /* pcrel_offset */
304
305 HOWTO (R_68K_TLS_LE16, /* type */
306 0, /* rightshift */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
309 FALSE, /* pc_relative */
310 0, /* bitpos */
311 complain_overflow_signed, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_68K_TLS_LE16", /* name */
314 FALSE, /* partial_inplace */
315 0, /* src_mask */
316 0x0000ffff, /* dst_mask */
317 FALSE), /* pcrel_offset */
318
319 HOWTO (R_68K_TLS_LE8, /* type */
320 0, /* rightshift */
321 0, /* size (0 = byte, 1 = short, 2 = long) */
322 8, /* bitsize */
323 FALSE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_signed, /* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_68K_TLS_LE8", /* name */
328 FALSE, /* partial_inplace */
329 0, /* src_mask */
330 0x000000ff, /* dst_mask */
331 FALSE), /* pcrel_offset */
332
333 /* TLS GD/LD dynamic relocations. */
334 HOWTO (R_68K_TLS_DTPMOD32, /* type */
335 0, /* rightshift */
336 2, /* size (0 = byte, 1 = short, 2 = long) */
337 32, /* bitsize */
338 FALSE, /* pc_relative */
339 0, /* bitpos */
340 complain_overflow_dont, /* complain_on_overflow */
341 bfd_elf_generic_reloc, /* special_function */
342 "R_68K_TLS_DTPMOD32", /* name */
343 FALSE, /* partial_inplace */
344 0, /* src_mask */
345 0xffffffff, /* dst_mask */
346 FALSE), /* pcrel_offset */
347
348 HOWTO (R_68K_TLS_DTPREL32, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 32, /* bitsize */
352 FALSE, /* pc_relative */
353 0, /* bitpos */
354 complain_overflow_dont, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_68K_TLS_DTPREL32", /* name */
357 FALSE, /* partial_inplace */
358 0, /* src_mask */
359 0xffffffff, /* dst_mask */
360 FALSE), /* pcrel_offset */
361
362 HOWTO (R_68K_TLS_TPREL32, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 32, /* bitsize */
366 FALSE, /* pc_relative */
367 0, /* bitpos */
368 complain_overflow_dont, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_68K_TLS_TPREL32", /* name */
371 FALSE, /* partial_inplace */
372 0, /* src_mask */
373 0xffffffff, /* dst_mask */
374 FALSE), /* pcrel_offset */
252b5132
RH		 375};
376
377static void
c86ad514 378rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
252b5132 379{
c86ad514
AS		 380 unsigned int indx = ELF32_R_TYPE (dst->r_info);
381
382 if (indx >= (unsigned int) R_68K_max)
383 {
384 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
385 abfd, (int) indx);
386 indx = R_68K_NONE;
387 }
388 cache_ptr->howto = &howto_table[indx];
252b5132
RH		 389}
390
391#define elf_info_to_howto rtype_to_howto
392
393static const struct
394{
395 bfd_reloc_code_real_type bfd_val;
396 int elf_val;
cf869cce
NC		 397}
398 reloc_map[] =
399{
252b5132
RH		 400 { BFD_RELOC_NONE, R_68K_NONE },
401 { BFD_RELOC_32, R_68K_32 },
402 { BFD_RELOC_16, R_68K_16 },
403 { BFD_RELOC_8, R_68K_8 },
404 { BFD_RELOC_32_PCREL, R_68K_PC32 },
405 { BFD_RELOC_16_PCREL, R_68K_PC16 },
406 { BFD_RELOC_8_PCREL, R_68K_PC8 },
407 { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
408 { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
409 { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
410 { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
411 { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
412 { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
413 { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
414 { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
415 { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
416 { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
417 { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
418 { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
419 { BFD_RELOC_NONE, R_68K_COPY },
420 { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
421 { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
422 { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
423 { BFD_RELOC_CTOR, R_68K_32 },
424 { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT },
425 { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY },
cf869cce
NC		 426 { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 },
427 { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 },
428 { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 },
429 { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 },
430 { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 },
431 { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 },
432 { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 },
433 { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 },
434 { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 },
435 { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 },
436 { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 },
437 { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 },
438 { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 },
439 { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 },
440 { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 },
252b5132
RH		 441};
442
443static reloc_howto_type *
444reloc_type_lookup (abfd, code)
121089cb 445 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 446 bfd_reloc_code_real_type code;
447{
448 unsigned int i;
449 for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
450 {
451 if (reloc_map[i].bfd_val == code)
452 return &howto_table[reloc_map[i].elf_val];
453 }
454 return 0;
455}
456
157090f7
AM		 457static reloc_howto_type *
458reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
459{
460 unsigned int i;
461
462 for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
463 if (howto_table[i].name != NULL
464 && strcasecmp (howto_table[i].name, r_name) == 0)
465 return &howto_table[i];
466
467 return NULL;
468}
469
252b5132 470#define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
157090f7 471#define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
252b5132 472#define ELF_ARCH bfd_arch_m68k
ae95ffa6 473#define ELF_TARGET_ID M68K_ELF_DATA
252b5132
RH		 474\f
475/* Functions for the m68k ELF linker. */
476
477/* The name of the dynamic interpreter. This is put in the .interp
478 section. */
479
480#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
481
cc3e26be
RS		 482/* Describes one of the various PLT styles. */
483
484struct elf_m68k_plt_info
485{
486 /* The size of each PLT entry. */
487 bfd_vma size;
488
489 /* The template for the first PLT entry. */
490 const bfd_byte *plt0_entry;
491
492 /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
493 The comments by each member indicate the value that the relocation
494 is against. */
495 struct {
496 unsigned int got4; /* .got + 4 */
497 unsigned int got8; /* .got + 8 */
498 } plt0_relocs;
499
500 /* The template for a symbol's PLT entry. */
501 const bfd_byte *symbol_entry;
502
503 /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
504 The comments by each member indicate the value that the relocation
505 is against. */
506 struct {
507 unsigned int got; /* the symbol's .got.plt entry */
508 unsigned int plt; /* .plt */
509 } symbol_relocs;
510
511 /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
512 The stub starts with "move.l #relocoffset,%d0". */
513 bfd_vma symbol_resolve_entry;
514};
515
252b5132
RH		 516/* The size in bytes of an entry in the procedure linkage table. */
517
518#define PLT_ENTRY_SIZE 20
519
520/* The first entry in a procedure linkage table looks like this. See
521 the SVR4 ABI m68k supplement to see how this works. */
522
523static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
524{
525 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
cc3e26be 526 0, 0, 0, 2, /* + (.got + 4) - . */
252b5132 527 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
cc3e26be 528 0, 0, 0, 2, /* + (.got + 8) - . */
252b5132
RH		 529 0, 0, 0, 0 /* pad out to 20 bytes. */
530};
531
532/* Subsequent entries in a procedure linkage table look like this. */
533
534static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
535{
536 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
cc3e26be 537 0, 0, 0, 2, /* + (.got.plt entry) - . */
252b5132 538 0x2f, 0x3c, /* move.l #offset,-(%sp) */
cc3e26be 539 0, 0, 0, 0, /* + reloc index */
252b5132 540 0x60, 0xff, /* bra.l .plt */
cc3e26be 541 0, 0, 0, 0 /* + .plt - . */
252b5132
RH		 542};
543
cc3e26be
RS		 544static const struct elf_m68k_plt_info elf_m68k_plt_info = {
545 PLT_ENTRY_SIZE,
546 elf_m68k_plt0_entry, { 4, 12 },
547 elf_m68k_plt_entry, { 4, 16 }, 8
548};
238d258f 549
7fb9f789 550#define ISAB_PLT_ENTRY_SIZE 24
238d258f 551
cc3e26be 552static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] =
238d258f 553{
cc3e26be
RS		 554 0x20, 0x3c, /* move.l #offset,%d0 */
555 0, 0, 0, 0, /* + (.got + 4) - . */
556 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
557 0x20, 0x3c, /* move.l #offset,%d0 */
558 0, 0, 0, 0, /* + (.got + 8) - . */
559 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
238d258f
NC		 560 0x4e, 0xd0, /* jmp (%a0) */
561 0x4e, 0x71 /* nop */
562};
563
564/* Subsequent entries in a procedure linkage table look like this. */
565
cc3e26be 566static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] =
238d258f 567{
cc3e26be
RS		 568 0x20, 0x3c, /* move.l #offset,%d0 */
569 0, 0, 0, 0, /* + (.got.plt entry) - . */
570 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
238d258f
NC		 571 0x4e, 0xd0, /* jmp (%a0) */
572 0x2f, 0x3c, /* move.l #offset,-(%sp) */
cc3e26be 573 0, 0, 0, 0, /* + reloc index */
238d258f 574 0x60, 0xff, /* bra.l .plt */
cc3e26be 575 0, 0, 0, 0 /* + .plt - . */
238d258f
NC		 576};
577
cc3e26be
RS		 578static const struct elf_m68k_plt_info elf_isab_plt_info = {
579 ISAB_PLT_ENTRY_SIZE,
580 elf_isab_plt0_entry, { 2, 12 },
581 elf_isab_plt_entry, { 2, 20 }, 12
582};
9e1281c7 583
7fb9f789 584#define ISAC_PLT_ENTRY_SIZE 24
9a2e615a
NS		 585
586static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] =
587{
588 0x20, 0x3c, /* move.l #offset,%d0 */
589 0, 0, 0, 0, /* replaced with .got + 4 - . */
590 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
591 0x20, 0x3c, /* move.l #offset,%d0 */
592 0, 0, 0, 0, /* replaced with .got + 8 - . */
593 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
594 0x4e, 0xd0, /* jmp (%a0) */
595 0x4e, 0x71 /* nop */
596};
597
598/* Subsequent entries in a procedure linkage table look like this. */
599
600static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] =
601{
602 0x20, 0x3c, /* move.l #offset,%d0 */
603 0, 0, 0, 0, /* replaced with (.got entry) - . */
604 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
605 0x4e, 0xd0, /* jmp (%a0) */
606 0x2f, 0x3c, /* move.l #offset,-(%sp) */
607 0, 0, 0, 0, /* replaced with offset into relocation table */
608 0x61, 0xff, /* bsr.l .plt */
609 0, 0, 0, 0 /* replaced with .plt - . */
610};
611
612static const struct elf_m68k_plt_info elf_isac_plt_info = {
613 ISAC_PLT_ENTRY_SIZE,
614 elf_isac_plt0_entry, { 2, 12},
615 elf_isac_plt_entry, { 2, 20 }, 12
616};
617
cc3e26be 618#define CPU32_PLT_ENTRY_SIZE 24
9e1281c7 619/* Procedure linkage table entries for the cpu32 */
cc3e26be 620static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] =
9e1281c7 621{
6091b433 622 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
cc3e26be 623 0, 0, 0, 2, /* + (.got + 4) - . */
6091b433 624 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
cc3e26be 625 0, 0, 0, 2, /* + (.got + 8) - . */
6091b433 626 0x4e, 0xd1, /* jmp %a1@ */
9e1281c7
CM		 627 0, 0, 0, 0, /* pad out to 24 bytes. */
628 0, 0
629};
630
cc3e26be 631static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] =
9e1281c7 632{
1ca42bad 633 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
cc3e26be 634 0, 0, 0, 2, /* + (.got.plt entry) - . */
1ca42bad 635 0x4e, 0xd1, /* jmp %a1@ */
9e1281c7 636 0x2f, 0x3c, /* move.l #offset,-(%sp) */
cc3e26be 637 0, 0, 0, 0, /* + reloc index */
9e1281c7 638 0x60, 0xff, /* bra.l .plt */
cc3e26be 639 0, 0, 0, 0, /* + .plt - . */
9e1281c7
CM		 640 0, 0
641};
642
cc3e26be
RS		 643static const struct elf_m68k_plt_info elf_cpu32_plt_info = {
644 CPU32_PLT_ENTRY_SIZE,
645 elf_cpu32_plt0_entry, { 4, 12 },
646 elf_cpu32_plt_entry, { 4, 18 }, 10
647};
648
252b5132
RH		 649/* The m68k linker needs to keep track of the number of relocs that it
650 decides to copy in check_relocs for each symbol. This is so that it
651 can discard PC relative relocs if it doesn't need them when linking
652 with -Bsymbolic. We store the information in a field extending the
653 regular ELF linker hash table. */
654
655/* This structure keeps track of the number of PC relative relocs we have
656 copied for a given symbol. */
657
658struct elf_m68k_pcrel_relocs_copied
659{
660 /* Next section. */
661 struct elf_m68k_pcrel_relocs_copied *next;
662 /* A section in dynobj. */
663 asection *section;
664 /* Number of relocs copied in this section. */
665 bfd_size_type count;
666};
667
7fb9f789
NC		 668/* Forward declaration. */
669struct elf_m68k_got_entry;
670
252b5132
RH		 671/* m68k ELF linker hash entry. */
672
673struct elf_m68k_link_hash_entry
674{
675 struct elf_link_hash_entry root;
676
677 /* Number of PC relative relocs copied for this symbol. */
678 struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
7fb9f789
NC		 679
680 /* Key to got_entries. */
681 unsigned long got_entry_key;
682
683 /* List of GOT entries for this symbol. This list is build during
684 offset finalization and is used within elf_m68k_finish_dynamic_symbol
685 to traverse all GOT entries for a particular symbol.
686
687 ??? We could've used root.got.glist field instead, but having
688 a separate field is cleaner. */
689 struct elf_m68k_got_entry *glist;
252b5132
RH		 690};
691
0cca5f05
AS		 692#define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
693
7fb9f789
NC		 694/* Key part of GOT entry in hashtable. */
695struct elf_m68k_got_entry_key
696{
697 /* BFD in which this symbol was defined. NULL for global symbols. */
698 const bfd *bfd;
699
700 /* Symbol index. Either local symbol index or h->got_entry_key. */
701 unsigned long symndx;
cf869cce
NC		 702
703 /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32},
704 R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}.
705
706 From perspective of hashtable key, only elf_m68k_got_reloc_type (type)
707 matters. That is, we distinguish between, say, R_68K_GOT16O
708 and R_68K_GOT32O when allocating offsets, but they are considered to be
709 the same when searching got->entries. */
710 enum elf_m68k_reloc_type type;
7fb9f789
NC		 711};
712
cf869cce
NC		 713/* Size of the GOT offset suitable for relocation. */
714enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST };
715
7fb9f789
NC		 716/* Entry of the GOT. */
717struct elf_m68k_got_entry
718{
719 /* GOT entries are put into a got->entries hashtable. This is the key. */
720 struct elf_m68k_got_entry_key key_;
721
722 /* GOT entry data. We need s1 before offset finalization and s2 after. */
723 union
724 {
725 struct
726 {
727 /* Number of times this entry is referenced. It is used to
728 filter out unnecessary GOT slots in elf_m68k_gc_sweep_hook. */
729 bfd_vma refcount;
7fb9f789
NC		 730 } s1;
731
732 struct
733 {
734 /* Offset from the start of .got section. To calculate offset relative
735 to GOT pointer one should substract got->offset from this value. */
736 bfd_vma offset;
737
738 /* Pointer to the next GOT entry for this global symbol.
739 Symbols have at most one entry in one GOT, but might
740 have entries in more than one GOT.
741 Root of this list is h->glist.
742 NULL for local symbols. */
743 struct elf_m68k_got_entry *next;
744 } s2;
745 } u;
746};
747
cf869cce
NC		 748/* Return representative type for relocation R_TYPE.
749 This is used to avoid enumerating many relocations in comparisons,
750 switches etc. */
751
752static enum elf_m68k_reloc_type
753elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type)
754{
755 switch (r_type)
756 {
757 /* In most cases R_68K_GOTx relocations require the very same
758 handling as R_68K_GOT32O relocation. In cases when we need
759 to distinguish between the two, we use explicitly compare against
760 r_type. */
761 case R_68K_GOT32:
762 case R_68K_GOT16:
763 case R_68K_GOT8:
764 case R_68K_GOT32O:
765 case R_68K_GOT16O:
766 case R_68K_GOT8O:
767 return R_68K_GOT32O;
768
769 case R_68K_TLS_GD32:
770 case R_68K_TLS_GD16:
771 case R_68K_TLS_GD8:
772 return R_68K_TLS_GD32;
773
774 case R_68K_TLS_LDM32:
775 case R_68K_TLS_LDM16:
776 case R_68K_TLS_LDM8:
777 return R_68K_TLS_LDM32;
778
779 case R_68K_TLS_IE32:
780 case R_68K_TLS_IE16:
781 case R_68K_TLS_IE8:
782 return R_68K_TLS_IE32;
783
784 default:
785 BFD_ASSERT (FALSE);
786 return 0;
787 }
788}
789
790/* Return size of the GOT entry offset for relocation R_TYPE. */
791
792static enum elf_m68k_got_offset_size
793elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type)
794{
795 switch (r_type)
796 {
797 case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8:
798 case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32:
799 case R_68K_TLS_IE32:
800 return R_32;
801
802 case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16:
803 case R_68K_TLS_IE16:
804 return R_16;
805
806 case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8:
807 case R_68K_TLS_IE8:
808 return R_8;
809
810 default:
811 BFD_ASSERT (FALSE);
812 return 0;
813 }
814}
815
816/* Return number of GOT entries we need to allocate in GOT for
817 relocation R_TYPE. */
818
819static bfd_vma
820elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type)
821{
822 switch (elf_m68k_reloc_got_type (r_type))
823 {
824 case R_68K_GOT32O:
825 case R_68K_TLS_IE32:
826 return 1;
827
828 case R_68K_TLS_GD32:
829 case R_68K_TLS_LDM32:
830 return 2;
831
832 default:
833 BFD_ASSERT (FALSE);
834 return 0;
835 }
836}
837
838/* Return TRUE if relocation R_TYPE is a TLS one. */
839
840static bfd_boolean
841elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type)
842{
843 switch (r_type)
844 {
845 case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8:
846 case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8:
847 case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8:
848 case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8:
849 case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8:
850 case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32:
851 return TRUE;
852
853 default:
854 return FALSE;
855 }
856}
857
7fb9f789
NC		 858/* Data structure representing a single GOT. */
859struct elf_m68k_got
860{
861 /* Hashtable of 'struct elf_m68k_got_entry's.
862 Starting size of this table is the maximum number of
863 R_68K_GOT8O entries. */
864 htab_t entries;
865
cf869cce
NC		 866 /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require
867 several GOT slots.
7fb9f789 868
cf869cce
NC		 869 n_slots[R_8] is the count of R_8 slots in this GOT.
870 n_slots[R_16] is the cumulative count of R_8 and R_16 slots
871 in this GOT.
872 n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots
873 in this GOT. This is the total number of slots. */
874 bfd_vma n_slots[R_LAST];
7fb9f789 875
cf869cce 876 /* Number of local (entry->key_.h == NULL) slots in this GOT.
7fb9f789
NC		 877 This is only used to properly calculate size of .rela.got section;
878 see elf_m68k_partition_multi_got. */
cf869cce 879 bfd_vma local_n_slots;
7fb9f789
NC		 880
881 /* Offset of this GOT relative to beginning of .got section. */
882 bfd_vma offset;
883};
884
885/* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
886struct elf_m68k_bfd2got_entry
887{
888 /* BFD. */
889 const bfd *bfd;
890
891 /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
892 GOT structure. After partitioning several BFD's might [and often do]
893 share a single GOT. */
894 struct elf_m68k_got *got;
895};
896
897/* The main data structure holding all the pieces. */
898struct elf_m68k_multi_got
899{
900 /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
901 here, then it doesn't need a GOT (this includes the case of a BFD
902 having an empty GOT).
903
904 ??? This hashtable can be replaced by an array indexed by bfd->id. */
905 htab_t bfd2got;
906
907 /* Next symndx to assign a global symbol.
908 h->got_entry_key is initialized from this counter. */
909 unsigned long global_symndx;
910};
911
252b5132
RH		 912/* m68k ELF linker hash table. */
913
914struct elf_m68k_link_hash_table
915{
916 struct elf_link_hash_table root;
b6152c34 917
87d72d41
AM		 918 /* Small local sym cache. */
919 struct sym_cache sym_cache;
cc3e26be
RS		 920
921 /* The PLT format used by this link, or NULL if the format has not
922 yet been chosen. */
923 const struct elf_m68k_plt_info *plt_info;
7fb9f789
NC		 924
925 /* True, if GP is loaded within each function which uses it.
926 Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
927 bfd_boolean local_gp_p;
928
929 /* Switch controlling use of negative offsets to double the size of GOTs. */
930 bfd_boolean use_neg_got_offsets_p;
931
932 /* Switch controlling generation of multiple GOTs. */
933 bfd_boolean allow_multigot_p;
934
935 /* Multi-GOT data structure. */
936 struct elf_m68k_multi_got multi_got_;
252b5132
RH		 937};
938
252b5132
RH		 939/* Get the m68k ELF linker hash table from a link_info structure. */
940
941#define elf_m68k_hash_table(p) \
4dfe6ac6
NC		 942 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
943 == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL)
252b5132 944
7fb9f789
NC		 945/* Shortcut to multi-GOT data. */
946#define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
947
252b5132
RH		 948/* Create an entry in an m68k ELF linker hash table. */
949
950static struct bfd_hash_entry *
4dfe6ac6
NC		 951elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry,
952 struct bfd_hash_table *table,
953 const char *string)
252b5132 954{
0cca5f05 955 struct bfd_hash_entry *ret = entry;
252b5132
RH		 956
957 /* Allocate the structure if it has not already been allocated by a
958 subclass. */
0cca5f05
AS		 959 if (ret == NULL)
960 ret = bfd_hash_allocate (table,
961 sizeof (struct elf_m68k_link_hash_entry));
962 if (ret == NULL)
963 return ret;
252b5132
RH		 964
965 /* Call the allocation method of the superclass. */
0cca5f05
AS		 966 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
967 if (ret != NULL)
7fb9f789
NC		 968 {
969 elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
970 elf_m68k_hash_entry (ret)->got_entry_key = 0;
971 elf_m68k_hash_entry (ret)->glist = NULL;
972 }
252b5132 973
0cca5f05 974 return ret;
252b5132
RH		 975}
976
977/* Create an m68k ELF linker hash table. */
978
979static struct bfd_link_hash_table *
4dfe6ac6 980elf_m68k_link_hash_table_create (bfd *abfd)
252b5132
RH		 981{
982 struct elf_m68k_link_hash_table *ret;
dc810e39 983 bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
252b5132 984
e2d34d7d 985 ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 986 if (ret == (struct elf_m68k_link_hash_table *) NULL)
987 return NULL;
988
66eb6687
AM		 989 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
990 elf_m68k_link_hash_newfunc,
4dfe6ac6
NC		 991 sizeof (struct elf_m68k_link_hash_entry),
992 M68K_ELF_DATA))
252b5132 993 {
e2d34d7d 994 free (ret);
252b5132
RH		 995 return NULL;
996 }
997
87d72d41 998 ret->sym_cache.abfd = NULL;
cc3e26be 999 ret->plt_info = NULL;
7fb9f789
NC		 1000 ret->local_gp_p = FALSE;
1001 ret->use_neg_got_offsets_p = FALSE;
1002 ret->allow_multigot_p = FALSE;
1003 ret->multi_got_.bfd2got = NULL;
1004 ret->multi_got_.global_symndx = 1;
b6152c34 1005
252b5132
RH		 1006 return &ret->root.root;
1007}
1008
7fb9f789
NC		 1009/* Destruct local data. */
1010
1011static void
1012elf_m68k_link_hash_table_free (struct bfd_link_hash_table *_htab)
1013{
1014 struct elf_m68k_link_hash_table *htab;
1015
1016 htab = (struct elf_m68k_link_hash_table *) _htab;
1017
1018 if (htab->multi_got_.bfd2got != NULL)
1019 {
1020 htab_delete (htab->multi_got_.bfd2got);
1021 htab->multi_got_.bfd2got = NULL;
1022 }
1023}
1024
266abb8f
NS		 1025/* Set the right machine number. */
1026
1027static bfd_boolean
1028elf32_m68k_object_p (bfd *abfd)
1029{
1030 unsigned int mach = 0;
1031 unsigned features = 0;
1032 flagword eflags = elf_elfheader (abfd)->e_flags;
1033
425c6cb0 1034 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
266abb8f 1035 features |= m68000;
425c6cb0 1036 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
3bdcfdf4
KH		 1037 features |= cpu32;
1038 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1039 features |= fido_a;
425c6cb0 1040 else
266abb8f 1041 {
c694fd50 1042 switch (eflags & EF_M68K_CF_ISA_MASK)
266abb8f 1043 {
c694fd50 1044 case EF_M68K_CF_ISA_A_NODIV:
266abb8f
NS		 1045 features |= mcfisa_a;
1046 break;
c694fd50 1047 case EF_M68K_CF_ISA_A:
0b2e31dc
NS		 1048 features |= mcfisa_a|mcfhwdiv;
1049 break;
c694fd50 1050 case EF_M68K_CF_ISA_A_PLUS:
0b2e31dc
NS		 1051 features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
1052 break;
c694fd50 1053 case EF_M68K_CF_ISA_B_NOUSP:
0b2e31dc
NS		 1054 features |= mcfisa_a|mcfisa_b|mcfhwdiv;
1055 break;
c694fd50 1056 case EF_M68K_CF_ISA_B:
0b2e31dc
NS		 1057 features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
1058 break;
9a2e615a
NS		 1059 case EF_M68K_CF_ISA_C:
1060 features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
1061 break;
8d100c32
KH		 1062 case EF_M68K_CF_ISA_C_NODIV:
1063 features |= mcfisa_a|mcfisa_c|mcfusp;
1064 break;
266abb8f 1065 }
c694fd50 1066 switch (eflags & EF_M68K_CF_MAC_MASK)
266abb8f 1067 {
c694fd50 1068 case EF_M68K_CF_MAC:
266abb8f
NS		 1069 features |= mcfmac;
1070 break;
c694fd50 1071 case EF_M68K_CF_EMAC:
266abb8f
NS		 1072 features |= mcfemac;
1073 break;
1074 }
c694fd50 1075 if (eflags & EF_M68K_CF_FLOAT)
266abb8f
NS		 1076 features |= cfloat;
1077 }
1078
1079 mach = bfd_m68k_features_to_mach (features);
1080 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
1081
1082 return TRUE;
1083}
1084
fc9f1df9
NC		 1085/* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag
1086 field based on the machine number. */
1087
1088static void
1089elf_m68k_final_write_processing (bfd *abfd,
1090 bfd_boolean linker ATTRIBUTE_UNUSED)
1091{
1092 int mach = bfd_get_mach (abfd);
1093 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
1094
1095 if (!e_flags)
1096 {
1097 unsigned int arch_mask;
1098
1099 arch_mask = bfd_m68k_mach_to_features (mach);
1100
1101 if (arch_mask & m68000)
1102 e_flags = EF_M68K_M68000;
1103 else if (arch_mask & cpu32)
1104 e_flags = EF_M68K_CPU32;
1105 else if (arch_mask & fido_a)
1106 e_flags = EF_M68K_FIDO;
1107 else
1108 {
1109 switch (arch_mask
1110 & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp))
1111 {
1112 case mcfisa_a:
1113 e_flags |= EF_M68K_CF_ISA_A_NODIV;
1114 break;
1115 case mcfisa_a | mcfhwdiv:
1116 e_flags |= EF_M68K_CF_ISA_A;
1117 break;
1118 case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp:
1119 e_flags |= EF_M68K_CF_ISA_A_PLUS;
1120 break;
1121 case mcfisa_a | mcfisa_b | mcfhwdiv:
1122 e_flags |= EF_M68K_CF_ISA_B_NOUSP;
1123 break;
1124 case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp:
1125 e_flags |= EF_M68K_CF_ISA_B;
1126 break;
1127 case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp:
1128 e_flags |= EF_M68K_CF_ISA_C;
1129 break;
1130 case mcfisa_a | mcfisa_c | mcfusp:
1131 e_flags |= EF_M68K_CF_ISA_C_NODIV;
1132 break;
1133 }
1134 if (arch_mask & mcfmac)
1135 e_flags |= EF_M68K_CF_MAC;
1136 else if (arch_mask & mcfemac)
1137 e_flags |= EF_M68K_CF_EMAC;
1138 if (arch_mask & cfloat)
1139 e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
1140 }
1141 elf_elfheader (abfd)->e_flags = e_flags;
1142 }
1143}
1144
ae9a127f 1145/* Keep m68k-specific flags in the ELF header. */
fc9f1df9 1146
b34976b6 1147static bfd_boolean
9e1281c7
CM		 1148elf32_m68k_set_private_flags (abfd, flags)
1149 bfd *abfd;
1150 flagword flags;
1151{
1152 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM		 1153 elf_flags_init (abfd) = TRUE;
1154 return TRUE;
9e1281c7
CM		 1155}
1156
9e1281c7
CM		 1157/* Merge backend specific data from an object file to the output
1158 object file when linking. */
b34976b6 1159static bfd_boolean
9e1281c7
CM		 1160elf32_m68k_merge_private_bfd_data (ibfd, obfd)
1161 bfd *ibfd;
1162 bfd *obfd;
1163{
1164 flagword out_flags;
1165 flagword in_flags;
a9d34880
RS		 1166 flagword out_isa;
1167 flagword in_isa;
1168 const bfd_arch_info_type *arch_info;
7fb9f789 1169
9e1281c7
CM		 1170 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1171 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
266abb8f
NS		 1172 return FALSE;
1173
a9d34880
RS		 1174 /* Get the merged machine. This checks for incompatibility between
1175 Coldfire & non-Coldfire flags, incompability between different
1176 Coldfire ISAs, and incompability between different MAC types. */
1177 arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
1178 if (!arch_info)
1179 return FALSE;
9e1281c7 1180
7fb9f789
NC		 1181 bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
1182
1183 in_flags = elf_elfheader (ibfd)->e_flags;
1184 if (!elf_flags_init (obfd))
1185 {
1186 elf_flags_init (obfd) = TRUE;
1187 out_flags = in_flags;
1188 }
1189 else
1190 {
1191 out_flags = elf_elfheader (obfd)->e_flags;
1192 unsigned int variant_mask;
1193
1194 if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1195 variant_mask = 0;
1196 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1197 variant_mask = 0;
1198 else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1199 variant_mask = 0;
1200 else
1201 variant_mask = EF_M68K_CF_ISA_MASK;
1202
1203 in_isa = (in_flags & variant_mask);
1204 out_isa = (out_flags & variant_mask);
1205 if (in_isa > out_isa)
1206 out_flags ^= in_isa ^ out_isa;
1207 if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
1208 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1209 || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
1210 && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
1211 out_flags = EF_M68K_FIDO;
1212 else
1213 out_flags |= in_flags ^ in_isa;
1214 }
1215 elf_elfheader (obfd)->e_flags = out_flags;
1216
1217 return TRUE;
1218}
1219
1220/* Display the flags field. */
1221
1222static bfd_boolean
1223elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr)
1224{
1225 FILE *file = (FILE *) ptr;
1226 flagword eflags = elf_elfheader (abfd)->e_flags;
1227
1228 BFD_ASSERT (abfd != NULL && ptr != NULL);
1229
1230 /* Print normal ELF private data. */
1231 _bfd_elf_print_private_bfd_data (abfd, ptr);
1232
1233 /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
1234
1235 /* xgettext:c-format */
1236 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
1237
1238 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1239 fprintf (file, " [m68000]");
1240 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1241 fprintf (file, " [cpu32]");
1242 else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1243 fprintf (file, " [fido]");
1244 else
1245 {
1246 if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
1247 fprintf (file, " [cfv4e]");
1248
1249 if (eflags & EF_M68K_CF_ISA_MASK)
1250 {
1251 char const *isa = _("unknown");
1252 char const *mac = _("unknown");
1253 char const *additional = "";
1254
1255 switch (eflags & EF_M68K_CF_ISA_MASK)
1256 {
1257 case EF_M68K_CF_ISA_A_NODIV:
1258 isa = "A";
1259 additional = " [nodiv]";
1260 break;
1261 case EF_M68K_CF_ISA_A:
1262 isa = "A";
1263 break;
1264 case EF_M68K_CF_ISA_A_PLUS:
1265 isa = "A+";
1266 break;
1267 case EF_M68K_CF_ISA_B_NOUSP:
1268 isa = "B";
1269 additional = " [nousp]";
1270 break;
1271 case EF_M68K_CF_ISA_B:
1272 isa = "B";
1273 break;
1274 case EF_M68K_CF_ISA_C:
1275 isa = "C";
1276 break;
1277 case EF_M68K_CF_ISA_C_NODIV:
1278 isa = "C";
1279 additional = " [nodiv]";
1280 break;
1281 }
1282 fprintf (file, " [isa %s]%s", isa, additional);
1283
1284 if (eflags & EF_M68K_CF_FLOAT)
1285 fprintf (file, " [float]");
1286
1287 switch (eflags & EF_M68K_CF_MAC_MASK)
1288 {
1289 case 0:
1290 mac = NULL;
1291 break;
1292 case EF_M68K_CF_MAC:
1293 mac = "mac";
1294 break;
1295 case EF_M68K_CF_EMAC:
1296 mac = "emac";
1297 break;
f608cd77
NS		 1298 case EF_M68K_CF_EMAC_B:
1299 mac = "emac_b";
1300 break;
7fb9f789
NC		 1301 }
1302 if (mac)
1303 fprintf (file, " [%s]", mac);
1304 }
1305 }
1306
1307 fputc ('\n', file);
1308
1309 return TRUE;
1310}
1311
1312/* Multi-GOT support implementation design:
1313
1314 Multi-GOT starts in check_relocs hook. There we scan all
1315 relocations of a BFD and build a local GOT (struct elf_m68k_got)
1316 for it. If a single BFD appears to require too many GOT slots with
1317 R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
1318 to user.
1319 After check_relocs has been invoked for each input BFD, we have
1320 constructed a GOT for each input BFD.
1321
1322 To minimize total number of GOTs required for a particular output BFD
1323 (as some environments support only 1 GOT per output object) we try
1324 to merge some of the GOTs to share an offset space. Ideally [and in most
1325 cases] we end up with a single GOT. In cases when there are too many
1326 restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
1327 several GOTs, assuming the environment can handle them.
1328
1329 Partitioning is done in elf_m68k_partition_multi_got. We start with
1330 an empty GOT and traverse bfd2got hashtable putting got_entries from
1331 local GOTs to the new 'big' one. We do that by constructing an
1332 intermediate GOT holding all the entries the local GOT has and the big
1333 GOT lacks. Then we check if there is room in the big GOT to accomodate
1334 all the entries from diff. On success we add those entries to the big
1335 GOT; on failure we start the new 'big' GOT and retry the adding of
1336 entries from the local GOT. Note that this retry will always succeed as
1337 each local GOT doesn't overflow the limits. After partitioning we
1338 end up with each bfd assigned one of the big GOTs. GOT entries in the
1339 big GOTs are initialized with GOT offsets. Note that big GOTs are
1340 positioned consequently in program space and represent a single huge GOT
1341 to the outside world.
1342
1343 After that we get to elf_m68k_relocate_section. There we
1344 adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
1345 relocations to refer to appropriate [assigned to current input_bfd]
1346 big GOT.
1347
1348 Notes:
1349
cf869cce
NC		 1350 GOT entry type: We have several types of GOT entries.
1351 * R_8 type is used in entries for symbols that have at least one
1352 R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40
7fb9f789 1353 such entries in one GOT.
cf869cce
NC		 1354 * R_16 type is used in entries for symbols that have at least one
1355 R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations.
7fb9f789 1356 We can have at most 0x4000 such entries in one GOT.
cf869cce
NC		 1357 * R_32 type is used in all other cases. We can have as many
1358 such entries in one GOT as we'd like.
7fb9f789
NC		 1359 When counting relocations we have to include the count of the smaller
1360 ranged relocations in the counts of the larger ranged ones in order
1361 to correctly detect overflow.
1362
1363 Sorting the GOT: In each GOT starting offsets are assigned to
cf869cce
NC		 1364 R_8 entries, which are followed by R_16 entries, and
1365 R_32 entries go at the end. See finalize_got_offsets for details.
7fb9f789
NC		 1366
1367 Negative GOT offsets: To double usable offset range of GOTs we use
1368 negative offsets. As we assign entries with GOT offsets relative to
1369 start of .got section, the offset values are positive. They become
1370 negative only in relocate_section where got->offset value is
1371 subtracted from them.
1372
1373 3 special GOT entries: There are 3 special GOT entries used internally
1374 by loader. These entries happen to be placed to .got.plt section,
1375 so we don't do anything about them in multi-GOT support.
1376
1377 Memory management: All data except for hashtables
1378 multi_got->bfd2got and got->entries are allocated on
1379 elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
1380 to most functions), so we don't need to care to free them. At the
1381 moment of allocation hashtables are being linked into main data
1382 structure (multi_got), all pieces of which are reachable from
1383 elf_m68k_multi_got (info). We deallocate them in
1384 elf_m68k_link_hash_table_free. */
1385
1386/* Initialize GOT. */
1387
1388static void
cf869cce
NC		 1389elf_m68k_init_got (struct elf_m68k_got *got)
1390{
1391 got->entries = NULL;
1392 got->n_slots[R_8] = 0;
1393 got->n_slots[R_16] = 0;
1394 got->n_slots[R_32] = 0;
1395 got->local_n_slots = 0;
1396 got->offset = (bfd_vma) -1;
7fb9f789
NC		 1397}
1398
1399/* Destruct GOT. */
1400
1401static void
1402elf_m68k_clear_got (struct elf_m68k_got *got)
1403{
1404 if (got->entries != NULL)
1405 {
1406 htab_delete (got->entries);
1407 got->entries = NULL;
1408 }
1409}
1410
1411/* Create and empty GOT structure. INFO is the context where memory
1412 should be allocated. */
1413
1414static struct elf_m68k_got *
1415elf_m68k_create_empty_got (struct bfd_link_info *info)
1416{
1417 struct elf_m68k_got *got;
1418
1419 got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got));
1420 if (got == NULL)
1421 return NULL;
1422
cf869cce 1423 elf_m68k_init_got (got);
7fb9f789
NC		 1424
1425 return got;
1426}
1427
1428/* Initialize KEY. */
1429
1430static void
1431elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key,
1432 struct elf_link_hash_entry *h,
cf869cce
NC		 1433 const bfd *abfd, unsigned long symndx,
1434 enum elf_m68k_reloc_type reloc_type)
7fb9f789 1435{
cf869cce
NC		 1436 if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32)
1437 /* All TLS_LDM relocations share a single GOT entry. */
1438 {
1439 key->bfd = NULL;
1440 key->symndx = 0;
1441 }
1442 else if (h != NULL)
1443 /* Global symbols are identified with their got_entry_key. */
7fb9f789
NC		 1444 {
1445 key->bfd = NULL;
1446 key->symndx = elf_m68k_hash_entry (h)->got_entry_key;
1447 BFD_ASSERT (key->symndx != 0);
1448 }
1449 else
cf869cce 1450 /* Local symbols are identified by BFD they appear in and symndx. */
7fb9f789
NC		 1451 {
1452 key->bfd = abfd;
1453 key->symndx = symndx;
1454 }
cf869cce
NC		 1455
1456 key->type = reloc_type;
7fb9f789
NC		 1457}
1458
1459/* Calculate hash of got_entry.
1460 ??? Is it good? */
1461
1462static hashval_t
1463elf_m68k_got_entry_hash (const void *_entry)
1464{
1465 const struct elf_m68k_got_entry_key *key;
1466
1467 key = &((const struct elf_m68k_got_entry *) _entry)->key_;
1468
cf869cce
NC		 1469 return (key->symndx
1470 + (key->bfd != NULL ? (int) key->bfd->id : -1)
1471 + elf_m68k_reloc_got_type (key->type));
7fb9f789
NC		 1472}
1473
1474/* Check if two got entries are equal. */
1475
1476static int
1477elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2)
1478{
1479 const struct elf_m68k_got_entry_key *key1;
1480 const struct elf_m68k_got_entry_key *key2;
1481
1482 key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_;
1483 key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_;
1484
1485 return (key1->bfd == key2->bfd
cf869cce
NC		 1486 && key1->symndx == key2->symndx
1487 && (elf_m68k_reloc_got_type (key1->type)
1488 == elf_m68k_reloc_got_type (key2->type)));
7fb9f789
NC		 1489}
1490
cf869cce
NC		 1491/* When using negative offsets, we allocate one extra R_8, one extra R_16
1492 and one extra R_32 slots to simplify handling of 2-slot entries during
1493 offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */
1494
1495/* Maximal number of R_8 slots in a single GOT. */
1496#define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \
7fb9f789 1497 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
cf869cce 1498 ? (0x40 - 1) \
7fb9f789
NC		 1499 : 0x20)
1500
cf869cce
NC		 1501/* Maximal number of R_8 and R_16 slots in a single GOT. */
1502#define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \
7fb9f789 1503 (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
cf869cce 1504 ? (0x4000 - 2) \
7fb9f789
NC		 1505 : 0x2000)
1506
1507/* SEARCH - simply search the hashtable, don't insert new entries or fail when
1508 the entry cannot be found.
1509 FIND_OR_CREATE - search for an existing entry, but create new if there's
1510 no such.
1511 MUST_FIND - search for an existing entry and assert that it exist.
1512 MUST_CREATE - assert that there's no such entry and create new one. */
1513enum elf_m68k_get_entry_howto
1514 {
1515 SEARCH,
1516 FIND_OR_CREATE,
1517 MUST_FIND,
1518 MUST_CREATE
1519 };
1520
1521/* Get or create (depending on HOWTO) entry with KEY in GOT.
1522 INFO is context in which memory should be allocated (can be NULL if
1523 HOWTO is SEARCH or MUST_FIND). */
1524
1525static struct elf_m68k_got_entry *
1526elf_m68k_get_got_entry (struct elf_m68k_got *got,
1527 const struct elf_m68k_got_entry_key *key,
1528 enum elf_m68k_get_entry_howto howto,
1529 struct bfd_link_info *info)
1530{
1531 struct elf_m68k_got_entry entry_;
1532 struct elf_m68k_got_entry *entry;
1533 void **ptr;
1534
1535 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1536
1537 if (got->entries == NULL)
1538 /* This is the first entry in ABFD. Initialize hashtable. */
1539 {
1540 if (howto == SEARCH)
1541 return NULL;
1542
cf869cce 1543 got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT
7fb9f789
NC		 1544 (info),
1545 elf_m68k_got_entry_hash,
1546 elf_m68k_got_entry_eq, NULL);
1547 if (got->entries == NULL)
1548 {
1549 bfd_set_error (bfd_error_no_memory);
1550 return NULL;
1551 }
1552 }
1553
1554 entry_.key_ = *key;
1555 ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH
1556 ? INSERT : NO_INSERT));
1557 if (ptr == NULL)
1558 {
1559 if (howto == SEARCH)
1560 /* Entry not found. */
1561 return NULL;
1562
1563 /* We're out of memory. */
1564 bfd_set_error (bfd_error_no_memory);
1565 return NULL;
1566 }
1567
1568 if (*ptr == NULL)
1569 /* We didn't find the entry and we're asked to create a new one. */
1570 {
1571 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1572
1573 entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry));
1574 if (entry == NULL)
1575 return NULL;
1576
1577 /* Initialize new entry. */
1578 entry->key_ = *key;
1579
1580 entry->u.s1.refcount = 0;
cf869cce
NC		 1581
1582 /* Mark the entry as not initialized. */
1583 entry->key_.type = R_68K_max;
7fb9f789
NC		 1584
1585 *ptr = entry;
1586 }
1587 else
1588 /* We found the entry. */
1589 {
1590 BFD_ASSERT (howto != MUST_CREATE);
1591
1592 entry = *ptr;
1593 }
1594
1595 return entry;
1596}
1597
1598/* Update GOT counters when merging entry of WAS type with entry of NEW type.
1599 Return the value to which ENTRY's type should be set. */
1600
cf869cce
NC		 1601static enum elf_m68k_reloc_type
1602elf_m68k_update_got_entry_type (struct elf_m68k_got *got,
1603 enum elf_m68k_reloc_type was,
d3ce72d0 1604 enum elf_m68k_reloc_type new_reloc)
7fb9f789 1605{
cf869cce
NC		 1606 enum elf_m68k_got_offset_size was_size;
1607 enum elf_m68k_got_offset_size new_size;
1608 bfd_vma n_slots;
1609
1610 if (was == R_68K_max)
1611 /* The type of the entry is not initialized yet. */
7fb9f789 1612 {
cf869cce
NC		 1613 /* Update all got->n_slots counters, including n_slots[R_32]. */
1614 was_size = R_LAST;
7fb9f789 1615
d3ce72d0 1616 was = new_reloc;
7fb9f789 1617 }
7fb9f789 1618 else
cf869cce
NC		 1619 {
1620 /* !!! We, probably, should emit an error rather then fail on assert
1621 in such a case. */
1622 BFD_ASSERT (elf_m68k_reloc_got_type (was)
d3ce72d0 1623 == elf_m68k_reloc_got_type (new_reloc));
cf869cce
NC		 1624
1625 was_size = elf_m68k_reloc_got_offset_size (was);
1626 }
1627
d3ce72d0
NC		 1628 new_size = elf_m68k_reloc_got_offset_size (new_reloc);
1629 n_slots = elf_m68k_reloc_got_n_slots (new_reloc);
cf869cce
NC		 1630
1631 while (was_size > new_size)
1632 {
1633 --was_size;
1634 got->n_slots[was_size] += n_slots;
1635 }
7fb9f789 1636
d3ce72d0 1637 if (new_reloc > was)
cf869cce
NC		 1638 /* Relocations are ordered from bigger got offset size to lesser,
1639 so choose the relocation type with lesser offset size. */
d3ce72d0 1640 was = new_reloc;
cf869cce
NC		 1641
1642 return was;
7fb9f789
NC		 1643}
1644
1645/* Update GOT counters when removing an entry of type TYPE. */
1646
1647static void
cf869cce
NC		 1648elf_m68k_remove_got_entry_type (struct elf_m68k_got *got,
1649 enum elf_m68k_reloc_type type)
7fb9f789 1650{
cf869cce
NC		 1651 enum elf_m68k_got_offset_size os;
1652 bfd_vma n_slots;
7fb9f789 1653
cf869cce 1654 n_slots = elf_m68k_reloc_got_n_slots (type);
7fb9f789 1655
cf869cce
NC		 1656 /* Decrese counter of slots with offset size corresponding to TYPE
1657 and all greater offset sizes. */
1658 for (os = elf_m68k_reloc_got_offset_size (type); os <= R_32; ++os)
1659 {
1660 BFD_ASSERT (got->n_slots[os] >= n_slots);
7fb9f789 1661
cf869cce 1662 got->n_slots[os] -= n_slots;
7fb9f789
NC		 1663 }
1664}
1665
1666/* Add new or update existing entry to GOT.
1667 H, ABFD, TYPE and SYMNDX is data for the entry.
1668 INFO is a context where memory should be allocated. */
1669
1670static struct elf_m68k_got_entry *
1671elf_m68k_add_entry_to_got (struct elf_m68k_got *got,
1672 struct elf_link_hash_entry *h,
1673 const bfd *abfd,
cf869cce
NC		 1674 enum elf_m68k_reloc_type reloc_type,
1675 unsigned long symndx,
7fb9f789
NC		 1676 struct bfd_link_info *info)
1677{
1678 struct elf_m68k_got_entry_key key_;
1679 struct elf_m68k_got_entry *entry;
1680
1681 if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0)
1682 elf_m68k_hash_entry (h)->got_entry_key
1683 = elf_m68k_multi_got (info)->global_symndx++;
1684
cf869cce 1685 elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type);
7fb9f789
NC		 1686
1687 entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info);
1688 if (entry == NULL)
1689 return NULL;
1690
cf869cce
NC		 1691 /* Determine entry's type and update got->n_slots counters. */
1692 entry->key_.type = elf_m68k_update_got_entry_type (got,
1693 entry->key_.type,
1694 reloc_type);
1695
7fb9f789
NC		 1696 /* Update refcount. */
1697 ++entry->u.s1.refcount;
1698
1699 if (entry->u.s1.refcount == 1)
1700 /* We see this entry for the first time. */
1701 {
1702 if (entry->key_.bfd != NULL)
cf869cce 1703 got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type);
7fb9f789
NC		 1704 }
1705
cf869cce 1706 BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots);
7fb9f789 1707
cf869cce
NC		 1708 if ((got->n_slots[R_8]
1709 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1710 || (got->n_slots[R_16]
1711 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
7fb9f789
NC		 1712 /* This BFD has too many relocation. */
1713 {
cf869cce 1714 if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
7fb9f789 1715 (*_bfd_error_handler) (_("%B: GOT overflow: "
cf869cce
NC		 1716 "Number of relocations with 8-bit "
1717 "offset > %d"),
7fb9f789 1718 abfd,
cf869cce 1719 ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info));
7fb9f789
NC		 1720 else
1721 (*_bfd_error_handler) (_("%B: GOT overflow: "
cf869cce
NC		 1722 "Number of relocations with 8- or 16-bit "
1723 "offset > %d"),
7fb9f789 1724 abfd,
cf869cce 1725 ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info));
7fb9f789
NC		 1726
1727 return NULL;
1728 }
1729
1730 return entry;
1731}
1732
1733/* Compute the hash value of the bfd in a bfd2got hash entry. */
1734
1735static hashval_t
1736elf_m68k_bfd2got_entry_hash (const void *entry)
1737{
1738 const struct elf_m68k_bfd2got_entry *e;
1739
1740 e = (const struct elf_m68k_bfd2got_entry *) entry;
1741
1742 return e->bfd->id;
1743}
1744
1745/* Check whether two hash entries have the same bfd. */
1746
1747static int
1748elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2)
1749{
1750 const struct elf_m68k_bfd2got_entry *e1;
1751 const struct elf_m68k_bfd2got_entry *e2;
1752
1753 e1 = (const struct elf_m68k_bfd2got_entry *) entry1;
1754 e2 = (const struct elf_m68k_bfd2got_entry *) entry2;
1755
1756 return e1->bfd == e2->bfd;
1757}
1758
1759/* Destruct a bfd2got entry. */
1760
1761static void
1762elf_m68k_bfd2got_entry_del (void *_entry)
1763{
1764 struct elf_m68k_bfd2got_entry *entry;
1765
1766 entry = (struct elf_m68k_bfd2got_entry *) _entry;
1767
1768 BFD_ASSERT (entry->got != NULL);
1769 elf_m68k_clear_got (entry->got);
1770}
1771
1772/* Find existing or create new (depending on HOWTO) bfd2got entry in
1773 MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1774 memory should be allocated. */
1775
1776static struct elf_m68k_bfd2got_entry *
1777elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got,
1778 const bfd *abfd,
1779 enum elf_m68k_get_entry_howto howto,
1780 struct bfd_link_info *info)
1781{
1782 struct elf_m68k_bfd2got_entry entry_;
1783 void **ptr;
1784 struct elf_m68k_bfd2got_entry *entry;
1785
1786 BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1787
1788 if (multi_got->bfd2got == NULL)
1789 /* This is the first GOT. Initialize bfd2got. */
1790 {
1791 if (howto == SEARCH)
1792 return NULL;
1793
1794 multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash,
1795 elf_m68k_bfd2got_entry_eq,
1796 elf_m68k_bfd2got_entry_del);
1797 if (multi_got->bfd2got == NULL)
1798 {
1799 bfd_set_error (bfd_error_no_memory);
1800 return NULL;
1801 }
1802 }
1803
1804 entry_.bfd = abfd;
1805 ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH
1806 ? INSERT : NO_INSERT));
1807 if (ptr == NULL)
1808 {
1809 if (howto == SEARCH)
1810 /* Entry not found. */
1811 return NULL;
1812
1813 /* We're out of memory. */
1814 bfd_set_error (bfd_error_no_memory);
1815 return NULL;
1816 }
1817
1818 if (*ptr == NULL)
1819 /* Entry was not found. Create new one. */
1820 {
1821 BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1822
1823 entry = ((struct elf_m68k_bfd2got_entry *)
1824 bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)));
1825 if (entry == NULL)
1826 return NULL;
1827
1828 entry->bfd = abfd;
1829
1830 entry->got = elf_m68k_create_empty_got (info);
1831 if (entry->got == NULL)
1832 return NULL;
1833
1834 *ptr = entry;
1835 }
1836 else
1837 {
1838 BFD_ASSERT (howto != MUST_CREATE);
1839
1840 /* Return existing entry. */
1841 entry = *ptr;
1842 }
1843
1844 return entry;
1845}
1846
1847struct elf_m68k_can_merge_gots_arg
1848{
1849 /* A current_got that we constructing a DIFF against. */
1850 struct elf_m68k_got *big;
1851
1852 /* GOT holding entries not present or that should be changed in
1853 BIG. */
1854 struct elf_m68k_got *diff;
1855
1856 /* Context where to allocate memory. */
1857 struct bfd_link_info *info;
1858
1859 /* Error flag. */
1860 bfd_boolean error_p;
1861};
1862
1863/* Process a single entry from the small GOT to see if it should be added
1864 or updated in the big GOT. */
1865
1866static int
1867elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg)
1868{
1869 const struct elf_m68k_got_entry *entry1;
1870 struct elf_m68k_can_merge_gots_arg *arg;
1871 const struct elf_m68k_got_entry *entry2;
cf869cce 1872 enum elf_m68k_reloc_type type;
7fb9f789
NC		 1873
1874 entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr;
1875 arg = (struct elf_m68k_can_merge_gots_arg *) _arg;
1876
1877 entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL);
1878
1879 if (entry2 != NULL)
cf869cce 1880 /* We found an existing entry. Check if we should update it. */
7fb9f789 1881 {
cf869cce
NC		 1882 type = elf_m68k_update_got_entry_type (arg->diff,
1883 entry2->key_.type,
1884 entry1->key_.type);
7fb9f789 1885
cf869cce 1886 if (type == entry2->key_.type)
7fb9f789
NC		 1887 /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1888 To skip creation of difference entry we use the type,
1889 which we won't see in GOT entries for sure. */
cf869cce 1890 type = R_68K_max;
7fb9f789
NC		 1891 }
1892 else
cf869cce 1893 /* We didn't find the entry. Add entry1 to DIFF. */
7fb9f789 1894 {
cf869cce 1895 BFD_ASSERT (entry1->key_.type != R_68K_max);
7fb9f789 1896
cf869cce
NC		 1897 type = elf_m68k_update_got_entry_type (arg->diff,
1898 R_68K_max, entry1->key_.type);
7fb9f789 1899
7fb9f789 1900 if (entry1->key_.bfd != NULL)
cf869cce 1901 arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type);
7fb9f789
NC		 1902 }
1903
cf869cce 1904 if (type != R_68K_max)
7fb9f789
NC		 1905 /* Create an entry in DIFF. */
1906 {
1907 struct elf_m68k_got_entry *entry;
1908
1909 entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE,
1910 arg->info);
1911 if (entry == NULL)
1912 {
1913 arg->error_p = TRUE;
1914 return 0;
1915 }
1916
cf869cce 1917 entry->key_.type = type;
7fb9f789
NC		 1918 }
1919
1920 return 1;
1921}
1922
1923/* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1924 Construct DIFF GOT holding the entries which should be added or updated
1925 in BIG GOT to accumulate information from SMALL.
1926 INFO is the context where memory should be allocated. */
1927
1928static bfd_boolean
1929elf_m68k_can_merge_gots (struct elf_m68k_got *big,
1930 const struct elf_m68k_got *small,
1931 struct bfd_link_info *info,
1932 struct elf_m68k_got *diff)
1933{
1934 struct elf_m68k_can_merge_gots_arg arg_;
1935
1936 BFD_ASSERT (small->offset == (bfd_vma) -1);
1937
1938 arg_.big = big;
1939 arg_.diff = diff;
1940 arg_.info = info;
1941 arg_.error_p = FALSE;
1942 htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_);
1943 if (arg_.error_p)
1944 {
1945 diff->offset = 0;
1946 return FALSE;
1947 }
1948
1949 /* Check for overflow. */
cf869cce
NC		 1950 if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8]
1951 > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1952 || (big->n_slots[R_16] + arg_.diff->n_slots[R_16]
1953 > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
7fb9f789
NC		 1954 return FALSE;
1955
1956 return TRUE;
1957}
1958
1959struct elf_m68k_merge_gots_arg
1960{
1961 /* The BIG got. */
1962 struct elf_m68k_got *big;
1963
1964 /* Context where memory should be allocated. */
1965 struct bfd_link_info *info;
1966
1967 /* Error flag. */
1968 bfd_boolean error_p;
1969};
1970
1971/* Process a single entry from DIFF got. Add or update corresponding
1972 entry in the BIG got. */
1973
1974static int
1975elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg)
1976{
1977 const struct elf_m68k_got_entry *from;
1978 struct elf_m68k_merge_gots_arg *arg;
1979 struct elf_m68k_got_entry *to;
1980
1981 from = (const struct elf_m68k_got_entry *) *entry_ptr;
1982 arg = (struct elf_m68k_merge_gots_arg *) _arg;
1983
1984 to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE,
1985 arg->info);
1986 if (to == NULL)
1987 {
1988 arg->error_p = TRUE;
1989 return 0;
1990 }
1991
1992 BFD_ASSERT (to->u.s1.refcount == 0);
1993 /* All we need to merge is TYPE. */
cf869cce 1994 to->key_.type = from->key_.type;
7fb9f789
NC		 1995
1996 return 1;
1997}
1998
1999/* Merge data from DIFF to BIG. INFO is context where memory should be
2000 allocated. */
2001
2002static bfd_boolean
2003elf_m68k_merge_gots (struct elf_m68k_got *big,
2004 struct elf_m68k_got *diff,
2005 struct bfd_link_info *info)
2006{
2007 if (diff->entries != NULL)
2008 /* DIFF is not empty. Merge it into BIG GOT. */
2009 {
2010 struct elf_m68k_merge_gots_arg arg_;
2011
2012 /* Merge entries. */
2013 arg_.big = big;
2014 arg_.info = info;
2015 arg_.error_p = FALSE;
2016 htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_);
2017 if (arg_.error_p)
2018 return FALSE;
2019
2020 /* Merge counters. */
cf869cce
NC		 2021 big->n_slots[R_8] += diff->n_slots[R_8];
2022 big->n_slots[R_16] += diff->n_slots[R_16];
2023 big->n_slots[R_32] += diff->n_slots[R_32];
2024 big->local_n_slots += diff->local_n_slots;
7fb9f789
NC		 2025 }
2026 else
2027 /* DIFF is empty. */
2028 {
cf869cce
NC		 2029 BFD_ASSERT (diff->n_slots[R_8] == 0);
2030 BFD_ASSERT (diff->n_slots[R_16] == 0);
2031 BFD_ASSERT (diff->n_slots[R_32] == 0);
2032 BFD_ASSERT (diff->local_n_slots == 0);
7fb9f789
NC		 2033 }
2034
2035 BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p
cf869cce
NC		 2036 || ((big->n_slots[R_8]
2037 <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
2038 && (big->n_slots[R_16]
2039 <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))));
7fb9f789
NC		 2040
2041 return TRUE;
2042}
2043
2044struct elf_m68k_finalize_got_offsets_arg
2045{
cf869cce
NC		 2046 /* Ranges of the offsets for GOT entries.
2047 R_x entries receive offsets between offset1[R_x] and offset2[R_x].
2048 R_x is R_8, R_16 and R_32. */
2049 bfd_vma *offset1;
2050 bfd_vma *offset2;
7fb9f789
NC		 2051
2052 /* Mapping from global symndx to global symbols.
2053 This is used to build lists of got entries for global symbols. */
2054 struct elf_m68k_link_hash_entry **symndx2h;
cf869cce
NC		 2055
2056 bfd_vma n_ldm_entries;
7fb9f789
NC		 2057};
2058
2059/* Assign ENTRY an offset. Build list of GOT entries for global symbols
2060 along the way. */
2061
2062static int
2063elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg)
2064{
2065 struct elf_m68k_got_entry *entry;
2066 struct elf_m68k_finalize_got_offsets_arg *arg;
2067
cf869cce
NC		 2068 enum elf_m68k_got_offset_size got_offset_size;
2069 bfd_vma entry_size;
2070
7fb9f789
NC		 2071 entry = (struct elf_m68k_got_entry *) *entry_ptr;
2072 arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg;
2073
2074 /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
2075 BFD_ASSERT (entry->u.s1.refcount == 0);
2076
cf869cce
NC		 2077 /* Get GOT offset size for the entry . */
2078 got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type);
7fb9f789 2079
cf869cce
NC		 2080 /* Calculate entry size in bytes. */
2081 entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type);
7fb9f789 2082
cf869cce
NC		 2083 /* Check if we should switch to negative range of the offsets. */
2084 if (arg->offset1[got_offset_size] + entry_size
2085 > arg->offset2[got_offset_size])
2086 {
2087 /* Verify that this is the only switch to negative range for
2088 got_offset_size. If this assertion fails, then we've miscalculated
2089 range for got_offset_size entries in
2090 elf_m68k_finalize_got_offsets. */
2091 BFD_ASSERT (arg->offset2[got_offset_size]
2092 != arg->offset2[-(int) got_offset_size - 1]);
2093
2094 /* Switch. */
2095 arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1];
2096 arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1];
2097
2098 /* Verify that now we have enough room for the entry. */
2099 BFD_ASSERT (arg->offset1[got_offset_size] + entry_size
2100 <= arg->offset2[got_offset_size]);
7fb9f789
NC		 2101 }
2102
cf869cce
NC		 2103 /* Assign offset to entry. */
2104 entry->u.s2.offset = arg->offset1[got_offset_size];
2105 arg->offset1[got_offset_size] += entry_size;
2106
7fb9f789
NC		 2107 if (entry->key_.bfd == NULL)
2108 /* Hook up this entry into the list of got_entries of H. */
2109 {
2110 struct elf_m68k_link_hash_entry *h;
2111
7fb9f789 2112 h = arg->symndx2h[entry->key_.symndx];
cf869cce
NC		 2113 if (h != NULL)
2114 {
2115 entry->u.s2.next = h->glist;
2116 h->glist = entry;
2117 }
2118 else
2119 /* This should be the entry for TLS_LDM relocation then. */
2120 {
2121 BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type)
2122 == R_68K_TLS_LDM32)
2123 && entry->key_.symndx == 0);
7fb9f789 2124
cf869cce
NC		 2125 ++arg->n_ldm_entries;
2126 }
7fb9f789
NC		 2127 }
2128 else
2129 /* This entry is for local symbol. */
2130 entry->u.s2.next = NULL;
2131
2132 return 1;
2133}
2134
2135/* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
2136 should use negative offsets.
2137 Build list of GOT entries for global symbols along the way.
2138 SYMNDX2H is mapping from global symbol indices to actual
cf869cce
NC		 2139 global symbols.
2140 Return offset at which next GOT should start. */
7fb9f789
NC		 2141
2142static void
2143elf_m68k_finalize_got_offsets (struct elf_m68k_got *got,
2144 bfd_boolean use_neg_got_offsets_p,
cf869cce
NC		 2145 struct elf_m68k_link_hash_entry **symndx2h,
2146 bfd_vma *final_offset, bfd_vma *n_ldm_entries)
7fb9f789
NC		 2147{
2148 struct elf_m68k_finalize_got_offsets_arg arg_;
cf869cce
NC		 2149 bfd_vma offset1_[2 * R_LAST];
2150 bfd_vma offset2_[2 * R_LAST];
2151 int i;
2152 bfd_vma start_offset;
7fb9f789
NC		 2153
2154 BFD_ASSERT (got->offset != (bfd_vma) -1);
2155
2156 /* We set entry offsets relative to the .got section (and not the
2157 start of a particular GOT), so that we can use them in
cf869cce 2158 finish_dynamic_symbol without needing to know the GOT which they come
7fb9f789
NC		 2159 from. */
2160
cf869cce
NC		 2161 /* Put offset1 in the middle of offset1_, same for offset2. */
2162 arg_.offset1 = offset1_ + R_LAST;
2163 arg_.offset2 = offset2_ + R_LAST;
2164
2165 start_offset = got->offset;
2166
7fb9f789 2167 if (use_neg_got_offsets_p)
cf869cce
NC		 2168 /* Setup both negative and positive ranges for R_8, R_16 and R_32. */
2169 i = -(int) R_32 - 1;
2170 else
2171 /* Setup positives ranges for R_8, R_16 and R_32. */
2172 i = (int) R_8;
2173
2174 for (; i <= (int) R_32; ++i)
7fb9f789 2175 {
cf869cce 2176 int j;
7fb9f789
NC		 2177 size_t n;
2178
cf869cce
NC		 2179 /* Set beginning of the range of offsets I. */
2180 arg_.offset1[i] = start_offset;
7fb9f789 2181
cf869cce
NC		 2182 /* Calculate number of slots that require I offsets. */
2183 j = (i >= 0) ? i : -i - 1;
2184 n = (j >= 1) ? got->n_slots[j - 1] : 0;
2185 n = got->n_slots[j] - n;
7fb9f789 2186
cf869cce
NC		 2187 if (use_neg_got_offsets_p && n != 0)
2188 {
2189 if (i < 0)
2190 /* We first fill the positive side of the range, so we might
2191 end up with one empty slot at that side when we can't fit
2192 whole 2-slot entry. Account for that at negative side of
2193 the interval with one additional entry. */
2194 n = n / 2 + 1;
2195 else
2196 /* When the number of slots is odd, make positive side of the
2197 range one entry bigger. */
2198 n = (n + 1) / 2;
2199 }
2200
2201 /* N is the number of slots that require I offsets.
2202 Calculate length of the range for I offsets. */
2203 n = 4 * n;
7fb9f789 2204
cf869cce
NC		 2205 /* Set end of the range. */
2206 arg_.offset2[i] = start_offset + n;
7fb9f789 2207
cf869cce 2208 start_offset = arg_.offset2[i];
7fb9f789
NC		 2209 }
2210
cf869cce
NC		 2211 if (!use_neg_got_offsets_p)
2212 /* Make sure that if we try to switch to negative offsets in
2213 elf_m68k_finalize_got_offsets_1, the assert therein will catch
2214 the bug. */
2215 for (i = R_8; i <= R_32; ++i)
2216 arg_.offset2[-i - 1] = arg_.offset2[i];
7fb9f789 2217
cf869cce
NC		 2218 /* Setup got->offset. offset1[R_8] is either in the middle or at the
2219 beginning of GOT depending on use_neg_got_offsets_p. */
2220 got->offset = arg_.offset1[R_8];
7fb9f789 2221
cf869cce
NC		 2222 arg_.symndx2h = symndx2h;
2223 arg_.n_ldm_entries = 0;
7fb9f789 2224
cf869cce
NC		 2225 /* Assign offsets. */
2226 htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_);
7fb9f789 2227
cf869cce
NC		 2228 /* Check offset ranges we have actually assigned. */
2229 for (i = (int) R_8; i <= (int) R_32; ++i)
2230 BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4);
7fb9f789 2231
cf869cce
NC		 2232 *final_offset = start_offset;
2233 *n_ldm_entries = arg_.n_ldm_entries;
7fb9f789
NC		 2234}
2235
2236struct elf_m68k_partition_multi_got_arg
2237{
2238 /* The GOT we are adding entries to. Aka big got. */
2239 struct elf_m68k_got *current_got;
2240
2241 /* Offset to assign the next CURRENT_GOT. */
2242 bfd_vma offset;
2243
2244 /* Context where memory should be allocated. */
2245 struct bfd_link_info *info;
2246
cf869cce 2247 /* Total number of slots in the .got section.
7fb9f789 2248 This is used to calculate size of the .got and .rela.got sections. */
cf869cce 2249 bfd_vma n_slots;
7fb9f789 2250
cf869cce
NC		 2251 /* Difference in numbers of allocated slots in the .got section
2252 and necessary relocations in the .rela.got section.
7fb9f789 2253 This is used to calculate size of the .rela.got section. */
cf869cce 2254 bfd_vma slots_relas_diff;
7fb9f789
NC		 2255
2256 /* Error flag. */
2257 bfd_boolean error_p;
2258
2259 /* Mapping from global symndx to global symbols.
2260 This is used to build lists of got entries for global symbols. */
2261 struct elf_m68k_link_hash_entry **symndx2h;
2262};
2263
cf869cce
NC		 2264static void
2265elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg)
2266{
2267 bfd_vma n_ldm_entries;
2268
2269 elf_m68k_finalize_got_offsets (arg->current_got,
2270 (elf_m68k_hash_table (arg->info)
2271 ->use_neg_got_offsets_p),
2272 arg->symndx2h,
2273 &arg->offset, &n_ldm_entries);
2274
2275 arg->n_slots += arg->current_got->n_slots[R_32];
2276
2277 if (!arg->info->shared)
2278 /* If we are generating a shared object, we need to
2279 output a R_68K_RELATIVE reloc so that the dynamic
2280 linker can adjust this GOT entry. Overwise we
2281 don't need space in .rela.got for local symbols. */
2282 arg->slots_relas_diff += arg->current_got->local_n_slots;
2283
2284 /* @LDM relocations require a 2-slot GOT entry, but only
2285 one relocation. Account for that. */
2286 arg->slots_relas_diff += n_ldm_entries;
2287
2288 BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots);
2289}
2290
2291
7fb9f789
NC		 2292/* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
2293 or start a new CURRENT_GOT. */
2294
2295static int
2296elf_m68k_partition_multi_got_1 (void **_entry, void *_arg)
2297{
2298 struct elf_m68k_bfd2got_entry *entry;
2299 struct elf_m68k_partition_multi_got_arg *arg;
2300 struct elf_m68k_got *got;
7fb9f789
NC		 2301 struct elf_m68k_got diff_;
2302 struct elf_m68k_got *diff;
2303
2304 entry = (struct elf_m68k_bfd2got_entry *) *_entry;
2305 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2306
2307 got = entry->got;
2308 BFD_ASSERT (got != NULL);
2309 BFD_ASSERT (got->offset == (bfd_vma) -1);
2310
2311 diff = NULL;
2312
2313 if (arg->current_got != NULL)
2314 /* Construct diff. */
2315 {
2316 diff = &diff_;
cf869cce 2317 elf_m68k_init_got (diff);
7fb9f789
NC		 2318
2319 if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff))
2320 {
2321 if (diff->offset == 0)
2322 /* Offset set to 0 in the diff_ indicates an error. */
2323 {
2324 arg->error_p = TRUE;
2325 goto final_return;
2326 }
2327
2328 if (elf_m68k_hash_table (arg->info)->allow_multigot_p)
2329 {
2330 elf_m68k_clear_got (diff);
cf869cce 2331 /* Schedule to finish up current_got and start new one. */
7fb9f789
NC		 2332 diff = NULL;
2333 }
2334 /* else
2335 Merge GOTs no matter what. If big GOT overflows,
2336 we'll fail in relocate_section due to truncated relocations.
2337
2338 ??? May be fail earlier? E.g., in can_merge_gots. */
2339 }
2340 }
2341 else
2342 /* Diff of got against empty current_got is got itself. */
2343 {
cf869cce 2344 /* Create empty current_got to put subsequent GOTs to. */
7fb9f789
NC		 2345 arg->current_got = elf_m68k_create_empty_got (arg->info);
2346 if (arg->current_got == NULL)
2347 {
2348 arg->error_p = TRUE;
2349 goto final_return;
2350 }
2351
2352 arg->current_got->offset = arg->offset;
2353
2354 diff = got;
2355 }
2356
7fb9f789
NC		 2357 if (diff != NULL)
2358 {
cf869cce 2359 if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info))
7fb9f789
NC		 2360 {
2361 arg->error_p = TRUE;
2362 goto final_return;
2363 }
2364
2365 /* Now we can free GOT. */
2366 elf_m68k_clear_got (got);
2367
cf869cce 2368 entry->got = arg->current_got;
7fb9f789
NC		 2369 }
2370 else
2371 {
7fb9f789 2372 /* Finish up current_got. */
cf869cce 2373 elf_m68k_partition_multi_got_2 (arg);
7fb9f789 2374
cf869cce
NC		 2375 /* Schedule to start a new current_got. */
2376 arg->current_got = NULL;
7fb9f789
NC		 2377
2378 /* Retry. */
2379 if (!elf_m68k_partition_multi_got_1 (_entry, _arg))
2380 {
2381 BFD_ASSERT (arg->error_p);
2382 goto final_return;
2383 }
2384 }
2385
2386 final_return:
2387 if (diff != NULL)
2388 elf_m68k_clear_got (diff);
2389
2390 return arg->error_p == FALSE ? 1 : 0;
2391}
2392
2393/* Helper function to build symndx2h mapping. */
2394
2395static bfd_boolean
2396elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h,
2397 void *_arg)
2398{
2399 struct elf_m68k_link_hash_entry *h;
2400
2401 h = elf_m68k_hash_entry (_h);
2402
2403 if (h->got_entry_key != 0)
2404 /* H has at least one entry in the GOT. */
2405 {
2406 struct elf_m68k_partition_multi_got_arg *arg;
2407
2408 arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2409
2410 BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL);
2411 arg->symndx2h[h->got_entry_key] = h;
2412 }
2413
2414 return TRUE;
2415}
2416
2417/* Merge GOTs of some BFDs, assign offsets to GOT entries and build
2418 lists of GOT entries for global symbols.
2419 Calculate sizes of .got and .rela.got sections. */
2420
2421static bfd_boolean
2422elf_m68k_partition_multi_got (struct bfd_link_info *info)
2423{
2424 struct elf_m68k_multi_got *multi_got;
2425 struct elf_m68k_partition_multi_got_arg arg_;
2426
2427 multi_got = elf_m68k_multi_got (info);
2428
2429 arg_.current_got = NULL;
2430 arg_.offset = 0;
2431 arg_.info = info;
cf869cce
NC		 2432 arg_.n_slots = 0;
2433 arg_.slots_relas_diff = 0;
7fb9f789
NC		 2434 arg_.error_p = FALSE;
2435
2436 if (multi_got->bfd2got != NULL)
2437 {
2438 /* Initialize symndx2h mapping. */
2439 {
2440 arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx
2441 * sizeof (*arg_.symndx2h));
2442 if (arg_.symndx2h == NULL)
2443 return FALSE;
2444
2445 elf_link_hash_traverse (elf_hash_table (info),
2446 elf_m68k_init_symndx2h_1, &arg_);
2447 }
2448
2449 /* Partition. */
2450 htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1,
2451 &arg_);
2452 if (arg_.error_p)
2453 {
2454 free (arg_.symndx2h);
2455 arg_.symndx2h = NULL;
2456
2457 return FALSE;
2458 }
2459
2460 /* Finish up last current_got. */
cf869cce 2461 elf_m68k_partition_multi_got_2 (&arg_);
7fb9f789
NC		 2462
2463 free (arg_.symndx2h);
266abb8f 2464 }
7fb9f789
NC		 2465
2466 if (elf_hash_table (info)->dynobj != NULL)
2467 /* Set sizes of .got and .rela.got sections. */
266abb8f 2468 {
7fb9f789 2469 asection *s;
425c6cb0 2470
7fb9f789
NC		 2471 s = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".got");
2472 if (s != NULL)
cf869cce 2473 s->size = arg_.offset;
425c6cb0 2474 else
cf869cce 2475 BFD_ASSERT (arg_.offset == 0);
425c6cb0 2476
cf869cce
NC		 2477 BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots);
2478 arg_.n_slots -= arg_.slots_relas_diff;
7fb9f789
NC		 2479
2480 s = bfd_get_section_by_name (elf_hash_table (info)->dynobj, ".rela.got");
2481 if (s != NULL)
cf869cce 2482 s->size = arg_.n_slots * sizeof (Elf32_External_Rela);
3bdcfdf4 2483 else
cf869cce 2484 BFD_ASSERT (arg_.n_slots == 0);
9e1281c7 2485 }
7fb9f789
NC		 2486 else
2487 BFD_ASSERT (multi_got->bfd2got == NULL);
9e1281c7 2488
b34976b6 2489 return TRUE;
9e1281c7
CM		 2490}
2491
7fb9f789
NC		 2492/* Specialized version of elf_m68k_get_got_entry that returns pointer
2493 to hashtable slot, thus allowing removal of entry via
2494 elf_m68k_remove_got_entry. */
2495
2496static struct elf_m68k_got_entry **
2497elf_m68k_find_got_entry_ptr (struct elf_m68k_got *got,
2498 struct elf_m68k_got_entry_key *key)
9e1281c7 2499{
7fb9f789
NC		 2500 void **ptr;
2501 struct elf_m68k_got_entry entry_;
2502 struct elf_m68k_got_entry **entry_ptr;
9e1281c7 2503
7fb9f789
NC		 2504 entry_.key_ = *key;
2505 ptr = htab_find_slot (got->entries, &entry_, NO_INSERT);
2506 BFD_ASSERT (ptr != NULL);
9e1281c7 2507
7fb9f789 2508 entry_ptr = (struct elf_m68k_got_entry **) ptr;
9e1281c7 2509
7fb9f789
NC		 2510 return entry_ptr;
2511}
9e1281c7 2512
7fb9f789 2513/* Remove entry pointed to by ENTRY_PTR from GOT. */
9e1281c7 2514
7fb9f789
NC		 2515static void
2516elf_m68k_remove_got_entry (struct elf_m68k_got *got,
2517 struct elf_m68k_got_entry **entry_ptr)
2518{
2519 struct elf_m68k_got_entry *entry;
2520
2521 entry = *entry_ptr;
2522
2523 /* Check that offsets have not been finalized yet. */
2524 BFD_ASSERT (got->offset == (bfd_vma) -1);
2525 /* Check that this entry is indeed unused. */
2526 BFD_ASSERT (entry->u.s1.refcount == 0);
2527
cf869cce 2528 elf_m68k_remove_got_entry_type (got, entry->key_.type);
7fb9f789
NC		 2529
2530 if (entry->key_.bfd != NULL)
cf869cce
NC		 2531 got->local_n_slots -= elf_m68k_reloc_got_n_slots (entry->key_.type);
2532
2533 BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots);
7fb9f789
NC		 2534
2535 htab_clear_slot (got->entries, (void **) entry_ptr);
2536}
2537
2538/* Copy any information related to dynamic linking from a pre-existing
2539 symbol to a newly created symbol. Also called to copy flags and
2540 other back-end info to a weakdef, in which case the symbol is not
2541 newly created and plt/got refcounts and dynamic indices should not
2542 be copied. */
2543
2544static void
2545elf_m68k_copy_indirect_symbol (struct bfd_link_info *info,
2546 struct elf_link_hash_entry *_dir,
2547 struct elf_link_hash_entry *_ind)
2548{
2549 struct elf_m68k_link_hash_entry *dir;
2550 struct elf_m68k_link_hash_entry *ind;
2551
2552 _bfd_elf_link_hash_copy_indirect (info, _dir, _ind);
2553
2554 if (_ind->root.type != bfd_link_hash_indirect)
2555 return;
2556
2557 dir = elf_m68k_hash_entry (_dir);
2558 ind = elf_m68k_hash_entry (_ind);
2559
e5f2b1de
NC		 2560 /* Any absolute non-dynamic relocations against an indirect or weak
2561 definition will be against the target symbol. */
2562 _dir->non_got_ref |= _ind->non_got_ref;
2563
7fb9f789
NC		 2564 /* We might have a direct symbol already having entries in the GOTs.
2565 Update its key only in case indirect symbol has GOT entries and
2566 assert that both indirect and direct symbols don't have GOT entries
2567 at the same time. */
2568 if (ind->got_entry_key != 0)
266abb8f 2569 {
7fb9f789
NC		 2570 BFD_ASSERT (dir->got_entry_key == 0);
2571 /* Assert that GOTs aren't partioned yet. */
2572 BFD_ASSERT (ind->glist == NULL);
425c6cb0 2573
7fb9f789
NC		 2574 dir->got_entry_key = ind->got_entry_key;
2575 ind->got_entry_key = 0;
266abb8f 2576 }
9e1281c7 2577}
7fb9f789 2578
252b5132
RH		 2579/* Look through the relocs for a section during the first phase, and
2580 allocate space in the global offset table or procedure linkage
2581 table. */
2582
b34976b6 2583static bfd_boolean
252b5132
RH		 2584elf_m68k_check_relocs (abfd, info, sec, relocs)
2585 bfd *abfd;
2586 struct bfd_link_info *info;
2587 asection *sec;
2588 const Elf_Internal_Rela *relocs;
2589{
2590 bfd *dynobj;
2591 Elf_Internal_Shdr *symtab_hdr;
2592 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 2593 const Elf_Internal_Rela *rel;
2594 const Elf_Internal_Rela *rel_end;
2595 asection *sgot;
2596 asection *srelgot;
2597 asection *sreloc;
7fb9f789 2598 struct elf_m68k_got *got;
252b5132 2599
1049f94e 2600 if (info->relocatable)
b34976b6 2601 return TRUE;
252b5132
RH		 2602
2603 dynobj = elf_hash_table (info)->dynobj;
2604 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2605 sym_hashes = elf_sym_hashes (abfd);
252b5132
RH		 2606
2607 sgot = NULL;
2608 srelgot = NULL;
2609 sreloc = NULL;
2610
7fb9f789
NC		 2611 got = NULL;
2612
252b5132
RH		 2613 rel_end = relocs + sec->reloc_count;
2614 for (rel = relocs; rel < rel_end; rel++)
2615 {
2616 unsigned long r_symndx;
2617 struct elf_link_hash_entry *h;
2618
2619 r_symndx = ELF32_R_SYM (rel->r_info);
2620
2621 if (r_symndx < symtab_hdr->sh_info)
2622 h = NULL;
2623 else
973a3492
L		 2624 {
2625 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2626 while (h->root.type == bfd_link_hash_indirect
2627 || h->root.type == bfd_link_hash_warning)
2628 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2629 }
252b5132
RH		 2630
2631 switch (ELF32_R_TYPE (rel->r_info))
2632 {
2633 case R_68K_GOT8:
2634 case R_68K_GOT16:
2635 case R_68K_GOT32:
2636 if (h != NULL
2637 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2638 break;
2639 /* Fall through. */
cf869cce
NC		 2640
2641 /* Relative GOT relocations. */
252b5132
RH		 2642 case R_68K_GOT8O:
2643 case R_68K_GOT16O:
2644 case R_68K_GOT32O:
cf869cce
NC		 2645 /* Fall through. */
2646
2647 /* TLS relocations. */
2648 case R_68K_TLS_GD8:
2649 case R_68K_TLS_GD16:
2650 case R_68K_TLS_GD32:
2651 case R_68K_TLS_LDM8:
2652 case R_68K_TLS_LDM16:
2653 case R_68K_TLS_LDM32:
2654 case R_68K_TLS_IE8:
2655 case R_68K_TLS_IE16:
2656 case R_68K_TLS_IE32:
2657
e5f2b1de
NC		 2658 case R_68K_TLS_TPREL32:
2659 case R_68K_TLS_DTPREL32:
2660
2661 if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32
2662 && info->shared)
2663 /* Do the special chorus for libraries with static TLS. */
2664 info->flags |= DF_STATIC_TLS;
2665
252b5132
RH		 2666 /* This symbol requires a global offset table entry. */
2667
2668 if (dynobj == NULL)
2669 {
2670 /* Create the .got section. */
2671 elf_hash_table (info)->dynobj = dynobj = abfd;
2672 if (!_bfd_elf_create_got_section (dynobj, info))
b34976b6 2673 return FALSE;
252b5132
RH		 2674 }
2675
2676 if (sgot == NULL)
2677 {
2678 sgot = bfd_get_section_by_name (dynobj, ".got");
2679 BFD_ASSERT (sgot != NULL);
2680 }
2681
2682 if (srelgot == NULL
2683 && (h != NULL || info->shared))
2684 {
2685 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2686 if (srelgot == NULL)
2687 {
3496cb2a
L		 2688 srelgot = bfd_make_section_with_flags (dynobj,
2689 ".rela.got",
2690 (SEC_ALLOC
2691 | SEC_LOAD
2692 | SEC_HAS_CONTENTS
2693 | SEC_IN_MEMORY
2694 | SEC_LINKER_CREATED
2695 | SEC_READONLY));
252b5132 2696 if (srelgot == NULL
252b5132 2697 || !bfd_set_section_alignment (dynobj, srelgot, 2))
b34976b6 2698 return FALSE;
252b5132
RH		 2699 }
2700 }
2701
7fb9f789 2702 if (got == NULL)
252b5132 2703 {
7fb9f789 2704 struct elf_m68k_bfd2got_entry *bfd2got_entry;
252b5132 2705
7fb9f789
NC		 2706 bfd2got_entry
2707 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2708 abfd, FIND_OR_CREATE, info);
2709 if (bfd2got_entry == NULL)
2710 return FALSE;
252b5132 2711
7fb9f789
NC		 2712 got = bfd2got_entry->got;
2713 BFD_ASSERT (got != NULL);
252b5132 2714 }
7fb9f789
NC		 2715
2716 {
2717 struct elf_m68k_got_entry *got_entry;
2718
2719 /* Add entry to got. */
2720 got_entry = elf_m68k_add_entry_to_got (got, h, abfd,
2721 ELF32_R_TYPE (rel->r_info),
2722 r_symndx, info);
2723 if (got_entry == NULL)
2724 return FALSE;
2725
2726 if (got_entry->u.s1.refcount == 1)
2727 {
2728 /* Make sure this symbol is output as a dynamic symbol. */
2729 if (h != NULL
2730 && h->dynindx == -1
2731 && !h->forced_local)
2732 {
2733 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2734 return FALSE;
2735 }
7fb9f789
NC		 2736 }
2737 }
2738
252b5132
RH		 2739 break;
2740
2741 case R_68K_PLT8:
2742 case R_68K_PLT16:
2743 case R_68K_PLT32:
2744 /* This symbol requires a procedure linkage table entry. We
2745 actually build the entry in adjust_dynamic_symbol,
2746 because this might be a case of linking PIC code which is
2747 never referenced by a dynamic object, in which case we
2748 don't need to generate a procedure linkage table entry
2749 after all. */
2750
2751 /* If this is a local symbol, we resolve it directly without
2752 creating a procedure linkage table entry. */
2753 if (h == NULL)
2754 continue;
2755
f5385ebf 2756 h->needs_plt = 1;
51b64d56 2757 h->plt.refcount++;
252b5132
RH		 2758 break;
2759
2760 case R_68K_PLT8O:
2761 case R_68K_PLT16O:
2762 case R_68K_PLT32O:
2763 /* This symbol requires a procedure linkage table entry. */
2764
2765 if (h == NULL)
2766 {
2767 /* It does not make sense to have this relocation for a
2768 local symbol. FIXME: does it? How to handle it if
2769 it does make sense? */
2770 bfd_set_error (bfd_error_bad_value);
b34976b6 2771 return FALSE;
252b5132
RH		 2772 }
2773
2774 /* Make sure this symbol is output as a dynamic symbol. */
b6152c34 2775 if (h->dynindx == -1
f5385ebf 2776 && !h->forced_local)
252b5132 2777 {
c152c796 2778 if (!bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2779 return FALSE;
252b5132
RH		 2780 }
2781
f5385ebf 2782 h->needs_plt = 1;
51b64d56 2783 h->plt.refcount++;
252b5132
RH		 2784 break;
2785
2786 case R_68K_PC8:
2787 case R_68K_PC16:
2788 case R_68K_PC32:
2789 /* If we are creating a shared library and this is not a local
2790 symbol, we need to copy the reloc into the shared library.
2791 However when linking with -Bsymbolic and this is a global
2792 symbol which is defined in an object we are including in the
2793 link (i.e., DEF_REGULAR is set), then we can resolve the
2794 reloc directly. At this point we have not seen all the input
2795 files, so it is possible that DEF_REGULAR is not set now but
2796 will be set later (it is never cleared). We account for that
2797 possibility below by storing information in the
2798 pcrel_relocs_copied field of the hash table entry. */
2799 if (!(info->shared
2800 && (sec->flags & SEC_ALLOC) != 0
2801 && h != NULL
2802 && (!info->symbolic
b6152c34 2803 || h->root.type == bfd_link_hash_defweak
f5385ebf 2804 || !h->def_regular)))
252b5132
RH		 2805 {
2806 if (h != NULL)
2807 {
2808 /* Make sure a plt entry is created for this symbol if
2809 it turns out to be a function defined by a dynamic
2810 object. */
51b64d56 2811 h->plt.refcount++;
252b5132
RH		 2812 }
2813 break;
2814 }
2815 /* Fall through. */
2816 case R_68K_8:
2817 case R_68K_16:
2818 case R_68K_32:
810e6986
NC		 2819 /* We don't need to handle relocs into sections not going into
2820 the "real" output. */
2821 if ((sec->flags & SEC_ALLOC) == 0)
2822 break;
2823
252b5132
RH		 2824 if (h != NULL)
2825 {
2826 /* Make sure a plt entry is created for this symbol if it
2827 turns out to be a function defined by a dynamic object. */
51b64d56 2828 h->plt.refcount++;
e5f2b1de
NC		 2829
2830 if (!info->shared)
2831 /* This symbol needs a non-GOT reference. */
2832 h->non_got_ref = 1;
252b5132
RH		 2833 }
2834
2835 /* If we are creating a shared library, we need to copy the
2836 reloc into the shared library. */
810e6986 2837 if (info->shared)
252b5132
RH		 2838 {
2839 /* When creating a shared object, we must copy these
2840 reloc types into the output file. We create a reloc
2841 section in dynobj and make room for this reloc. */
2842 if (sreloc == NULL)
2843 {
83bac4b0
NC		 2844 sreloc = _bfd_elf_make_dynamic_reloc_section
2845 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
252b5132 2846
252b5132 2847 if (sreloc == NULL)
83bac4b0 2848 return FALSE;
252b5132
RH		 2849 }
2850
3e829b4a
AS		 2851 if (sec->flags & SEC_READONLY
2852 /* Don't set DF_TEXTREL yet for PC relative
2853 relocations, they might be discarded later. */
2854 && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2855 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2856 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
2857 info->flags |= DF_TEXTREL;
2858
eea6121a 2859 sreloc->size += sizeof (Elf32_External_Rela);
252b5132 2860
b6152c34
AS		 2861 /* We count the number of PC relative relocations we have
2862 entered for this symbol, so that we can discard them
2863 again if, in the -Bsymbolic case, the symbol is later
2864 defined by a regular object, or, in the normal shared
2865 case, the symbol is forced to be local. Note that this
2866 function is only called if we are using an m68kelf linker
2867 hash table, which means that h is really a pointer to an
252b5132 2868 elf_m68k_link_hash_entry. */
b6152c34
AS		 2869 if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2870 || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2871 || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
252b5132 2872 {
252b5132 2873 struct elf_m68k_pcrel_relocs_copied *p;
b6152c34
AS		 2874 struct elf_m68k_pcrel_relocs_copied **head;
2875
2876 if (h != NULL)
2877 {
2878 struct elf_m68k_link_hash_entry *eh
0cca5f05 2879 = elf_m68k_hash_entry (h);
b6152c34
AS		 2880 head = &eh->pcrel_relocs_copied;
2881 }
2882 else
2883 {
2884 asection *s;
6edfbbad 2885 void *vpp;
87d72d41 2886 Elf_Internal_Sym *isym;
6edfbbad 2887
87d72d41
AM		 2888 isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache,
2889 abfd, r_symndx);
2890 if (isym == NULL)
b6152c34 2891 return FALSE;
252b5132 2892
87d72d41
AM		 2893 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2894 if (s == NULL)
2895 s = sec;
2896
6edfbbad
DJ		 2897 vpp = &elf_section_data (s)->local_dynrel;
2898 head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
b6152c34 2899 }
252b5132 2900
b6152c34 2901 for (p = *head; p != NULL; p = p->next)
252b5132
RH		 2902 if (p->section == sreloc)
2903 break;
2904
2905 if (p == NULL)
2906 {
2907 p = ((struct elf_m68k_pcrel_relocs_copied *)
dc810e39 2908 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
252b5132 2909 if (p == NULL)
b34976b6 2910 return FALSE;
b6152c34
AS		 2911 p->next = *head;
2912 *head = p;
252b5132
RH		 2913 p->section = sreloc;
2914 p->count = 0;
2915 }
2916
2917 ++p->count;
2918 }
2919 }
2920
2921 break;
2922
2923 /* This relocation describes the C++ object vtable hierarchy.
2924 Reconstruct it for later use during GC. */
2925 case R_68K_GNU_VTINHERIT:
c152c796 2926 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 2927 return FALSE;
252b5132
RH		 2928 break;
2929
2930 /* This relocation describes which C++ vtable entries are actually
2931 used. Record for later use during GC. */
2932 case R_68K_GNU_VTENTRY:
d17e0c6e
JB		 2933 BFD_ASSERT (h != NULL);
2934 if (h != NULL
2935 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 2936 return FALSE;
252b5132
RH		 2937 break;
2938
2939 default:
2940 break;
2941 }
2942 }
2943
b34976b6 2944 return TRUE;
252b5132
RH		 2945}
2946
2947/* Return the section that should be marked against GC for a given
2948 relocation. */
2949
2950static asection *
07adf181
AM		 2951elf_m68k_gc_mark_hook (asection *sec,
2952 struct bfd_link_info *info,
2953 Elf_Internal_Rela *rel,
2954 struct elf_link_hash_entry *h,
2955 Elf_Internal_Sym *sym)
252b5132
RH		 2956{
2957 if (h != NULL)
07adf181
AM		 2958 switch (ELF32_R_TYPE (rel->r_info))
2959 {
2960 case R_68K_GNU_VTINHERIT:
2961 case R_68K_GNU_VTENTRY:
2962 return NULL;
2963 }
2964
2965 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2966}
2967
2968/* Update the got entry reference counts for the section being removed. */
2969
b34976b6 2970static bfd_boolean
07adf181
AM		 2971elf_m68k_gc_sweep_hook (bfd *abfd,
2972 struct bfd_link_info *info,
2973 asection *sec,
2974 const Elf_Internal_Rela *relocs)
252b5132
RH		 2975{
2976 Elf_Internal_Shdr *symtab_hdr;
2977 struct elf_link_hash_entry **sym_hashes;
252b5132 2978 const Elf_Internal_Rela *rel, *relend;
252b5132 2979 bfd *dynobj;
7fb9f789 2980 struct elf_m68k_got *got;
252b5132 2981
7dda2462
TG		 2982 if (info->relocatable)
2983 return TRUE;
2984
252b5132 2985 dynobj = elf_hash_table (info)->dynobj;
dd5724d5 2986 if (dynobj == NULL)
b34976b6 2987 return TRUE;
dd5724d5 2988
4f075348
KH		 2989 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2990 sym_hashes = elf_sym_hashes (abfd);
7fb9f789 2991 got = NULL;
252b5132
RH		 2992
2993 relend = relocs + sec->reloc_count;
2994 for (rel = relocs; rel < relend; rel++)
2995 {
4f075348 2996 unsigned long r_symndx;
3eb128b2
AM		 2997 struct elf_link_hash_entry *h = NULL;
2998
2999 r_symndx = ELF32_R_SYM (rel->r_info);
3000 if (r_symndx >= symtab_hdr->sh_info)
3001 {
3002 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3003 while (h->root.type == bfd_link_hash_indirect
3004 || h->root.type == bfd_link_hash_warning)
3005 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3006 }
4f075348 3007
252b5132
RH		 3008 switch (ELF32_R_TYPE (rel->r_info))
3009 {
3010 case R_68K_GOT8:
3011 case R_68K_GOT16:
3012 case R_68K_GOT32:
7fb9f789
NC		 3013 if (h != NULL
3014 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3015 break;
3016
3017 /* FALLTHRU */
252b5132
RH		 3018 case R_68K_GOT8O:
3019 case R_68K_GOT16O:
3020 case R_68K_GOT32O:
cf869cce
NC		 3021 /* Fall through. */
3022
3023 /* TLS relocations. */
3024 case R_68K_TLS_GD8:
3025 case R_68K_TLS_GD16:
3026 case R_68K_TLS_GD32:
3027 case R_68K_TLS_LDM8:
3028 case R_68K_TLS_LDM16:
3029 case R_68K_TLS_LDM32:
3030 case R_68K_TLS_IE8:
3031 case R_68K_TLS_IE16:
3032 case R_68K_TLS_IE32:
3033
e5f2b1de
NC		 3034 case R_68K_TLS_TPREL32:
3035 case R_68K_TLS_DTPREL32:
3036
7fb9f789 3037 if (got == NULL)
252b5132 3038 {
7fb9f789
NC		 3039 got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3040 abfd, MUST_FIND, NULL)->got;
3041 BFD_ASSERT (got != NULL);
252b5132 3042 }
7fb9f789
NC		 3043
3044 {
3045 struct elf_m68k_got_entry_key key_;
3046 struct elf_m68k_got_entry **got_entry_ptr;
3047 struct elf_m68k_got_entry *got_entry;
3048
cf869cce
NC		 3049 elf_m68k_init_got_entry_key (&key_, h, abfd, r_symndx,
3050 ELF32_R_TYPE (rel->r_info));
7fb9f789
NC		 3051 got_entry_ptr = elf_m68k_find_got_entry_ptr (got, &key_);
3052
3053 got_entry = *got_entry_ptr;
3054
3055 if (got_entry->u.s1.refcount > 0)
3056 {
3057 --got_entry->u.s1.refcount;
3058
3059 if (got_entry->u.s1.refcount == 0)
3060 /* We don't need the .got entry any more. */
3061 elf_m68k_remove_got_entry (got, got_entry_ptr);
3062 }
3063 }
252b5132
RH		 3064 break;
3065
3066 case R_68K_PLT8:
3067 case R_68K_PLT16:
3068 case R_68K_PLT32:
3069 case R_68K_PLT8O:
3070 case R_68K_PLT16O:
3071 case R_68K_PLT32O:
3072 case R_68K_PC8:
3073 case R_68K_PC16:
3074 case R_68K_PC32:
3075 case R_68K_8:
3076 case R_68K_16:
3077 case R_68K_32:
3eb128b2 3078 if (h != NULL)
252b5132 3079 {
252b5132
RH		 3080 if (h->plt.refcount > 0)
3081 --h->plt.refcount;
3082 }
3083 break;
3084
3085 default:
3086 break;
3087 }
3088 }
3089
b34976b6 3090 return TRUE;
252b5132 3091}
cc3e26be
RS		 3092\f
3093/* Return the type of PLT associated with OUTPUT_BFD. */
3094
3095static const struct elf_m68k_plt_info *
3096elf_m68k_get_plt_info (bfd *output_bfd)
3097{
3098 unsigned int features;
3099
3100 features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
3101 if (features & cpu32)
3102 return &elf_cpu32_plt_info;
3103 if (features & mcfisa_b)
3104 return &elf_isab_plt_info;
9a2e615a
NS		 3105 if (features & mcfisa_c)
3106 return &elf_isac_plt_info;
cc3e26be
RS		 3107 return &elf_m68k_plt_info;
3108}
3109
3110/* This function is called after all the input files have been read,
3111 and the input sections have been assigned to output sections.
3112 It's a convenient place to determine the PLT style. */
3113
3114static bfd_boolean
3115elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
3116{
7fb9f789
NC		 3117 /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
3118 sections. */
3119 if (!elf_m68k_partition_multi_got (info))
3120 return FALSE;
3121
cc3e26be
RS		 3122 elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
3123 return TRUE;
3124}
252b5132 3125
252b5132
RH		 3126/* Adjust a symbol defined by a dynamic object and referenced by a
3127 regular object. The current definition is in some section of the
3128 dynamic object, but we're not including those sections. We have to
3129 change the definition to something the rest of the link can
3130 understand. */
3131
b34976b6 3132static bfd_boolean
252b5132
RH		 3133elf_m68k_adjust_dynamic_symbol (info, h)
3134 struct bfd_link_info *info;
3135 struct elf_link_hash_entry *h;
3136{
cc3e26be 3137 struct elf_m68k_link_hash_table *htab;
252b5132
RH		 3138 bfd *dynobj;
3139 asection *s;
252b5132 3140
cc3e26be 3141 htab = elf_m68k_hash_table (info);
252b5132
RH		 3142 dynobj = elf_hash_table (info)->dynobj;
3143
3144 /* Make sure we know what is going on here. */
3145 BFD_ASSERT (dynobj != NULL
f5385ebf 3146 && (h->needs_plt
f6e332e6 3147 || h->u.weakdef != NULL
f5385ebf
AM		 3148 || (h->def_dynamic
3149 && h->ref_regular
3150 && !h->def_regular)));
252b5132
RH		 3151
3152 /* If this is a function, put it in the procedure linkage table. We
3153 will fill in the contents of the procedure linkage table later,
3154 when we know the address of the .got section. */
3155 if (h->type == STT_FUNC
f5385ebf 3156 || h->needs_plt)
252b5132 3157 {
9dfe8738
AS		 3158 if ((h->plt.refcount <= 0
3159 || SYMBOL_CALLS_LOCAL (info, h)
3160 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3161 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3162 /* We must always create the plt entry if it was referenced
3163 by a PLTxxO relocation. In this case we already recorded
3164 it as a dynamic symbol. */
3165 && h->dynindx == -1)
3166 {
3167 /* This case can occur if we saw a PLTxx reloc in an input
3168 file, but the symbol was never referred to by a dynamic
9dfe8738
AS		 3169 object, or if all references were garbage collected. In
3170 such a case, we don't actually need to build a procedure
3171 linkage table, and we can just do a PCxx reloc instead. */
252b5132 3172 h->plt.offset = (bfd_vma) -1;
f5385ebf 3173 h->needs_plt = 0;
b34976b6 3174 return TRUE;
252b5132
RH		 3175 }
3176
3177 /* Make sure this symbol is output as a dynamic symbol. */
b6152c34 3178 if (h->dynindx == -1
f5385ebf 3179 && !h->forced_local)
252b5132 3180 {
c152c796 3181 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3182 return FALSE;
252b5132
RH		 3183 }
3184
3185 s = bfd_get_section_by_name (dynobj, ".plt");
3186 BFD_ASSERT (s != NULL);
3187
3188 /* If this is the first .plt entry, make room for the special
3189 first entry. */
eea6121a 3190 if (s->size == 0)
cc3e26be 3191 s->size = htab->plt_info->size;
252b5132
RH		 3192
3193 /* If this symbol is not defined in a regular file, and we are
3194 not generating a shared library, then set the symbol to this
3195 location in the .plt. This is required to make function
3196 pointers compare as equal between the normal executable and
3197 the shared library. */
3198 if (!info->shared
f5385ebf 3199 && !h->def_regular)
252b5132
RH		 3200 {
3201 h->root.u.def.section = s;
eea6121a 3202 h->root.u.def.value = s->size;
252b5132
RH		 3203 }
3204
eea6121a 3205 h->plt.offset = s->size;
252b5132
RH		 3206
3207 /* Make room for this entry. */
cc3e26be 3208 s->size += htab->plt_info->size;
252b5132
RH		 3209
3210 /* We also need to make an entry in the .got.plt section, which
3211 will be placed in the .got section by the linker script. */
252b5132
RH		 3212 s = bfd_get_section_by_name (dynobj, ".got.plt");
3213 BFD_ASSERT (s != NULL);
eea6121a 3214 s->size += 4;
252b5132
RH		 3215
3216 /* We also need to make an entry in the .rela.plt section. */
252b5132
RH		 3217 s = bfd_get_section_by_name (dynobj, ".rela.plt");
3218 BFD_ASSERT (s != NULL);
eea6121a 3219 s->size += sizeof (Elf32_External_Rela);
252b5132 3220
b34976b6 3221 return TRUE;
252b5132
RH		 3222 }
3223
3224 /* Reinitialize the plt offset now that it is not used as a reference
3225 count any more. */
3226 h->plt.offset = (bfd_vma) -1;
3227
3228 /* If this is a weak symbol, and there is a real definition, the
3229 processor independent code will have arranged for us to see the
3230 real definition first, and we can just use the same value. */
f6e332e6 3231 if (h->u.weakdef != NULL)
252b5132 3232 {
f6e332e6
AM		 3233 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3234 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3235 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3236 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 3237 return TRUE;
252b5132
RH		 3238 }
3239
3240 /* This is a reference to a symbol defined by a dynamic object which
3241 is not a function. */
3242
3243 /* If we are creating a shared library, we must presume that the
3244 only references to the symbol are via the global offset table.
3245 For such cases we need not do anything here; the relocations will
3246 be handled correctly by relocate_section. */
3247 if (info->shared)
b34976b6 3248 return TRUE;
252b5132 3249
e5f2b1de
NC		 3250 /* If there are no references to this symbol that do not use the
3251 GOT, we don't need to generate a copy reloc. */
3252 if (!h->non_got_ref)
3253 return TRUE;
3254
252b5132
RH		 3255 /* We must allocate the symbol in our .dynbss section, which will
3256 become part of the .bss section of the executable. There will be
3257 an entry for this symbol in the .dynsym section. The dynamic
3258 object will contain position independent code, so all references
3259 from the dynamic object to this symbol will go through the global
3260 offset table. The dynamic linker will use the .dynsym entry to
3261 determine the address it must put in the global offset table, so
3262 both the dynamic object and the regular object will refer to the
3263 same memory location for the variable. */
3264
3265 s = bfd_get_section_by_name (dynobj, ".dynbss");
3266 BFD_ASSERT (s != NULL);
3267
3268 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
3269 copy the initial value out of the dynamic object and into the
3270 runtime process image. We need to remember the offset into the
3271 .rela.bss section we are going to use. */
1d7e9d18 3272 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132
RH		 3273 {
3274 asection *srel;
3275
3276 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3277 BFD_ASSERT (srel != NULL);
eea6121a 3278 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 3279 h->needs_copy = 1;
252b5132
RH		 3280 }
3281
027297b7 3282 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 3283}
3284
3285/* Set the sizes of the dynamic sections. */
3286
b34976b6 3287static bfd_boolean
252b5132 3288elf_m68k_size_dynamic_sections (output_bfd, info)
aa91b392 3289 bfd *output_bfd ATTRIBUTE_UNUSED;
252b5132
RH		 3290 struct bfd_link_info *info;
3291{
3292 bfd *dynobj;
3293 asection *s;
b34976b6
AM		 3294 bfd_boolean plt;
3295 bfd_boolean relocs;
252b5132
RH		 3296
3297 dynobj = elf_hash_table (info)->dynobj;
3298 BFD_ASSERT (dynobj != NULL);
3299
3300 if (elf_hash_table (info)->dynamic_sections_created)
3301 {
3302 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 3303 if (info->executable)
252b5132
RH		 3304 {
3305 s = bfd_get_section_by_name (dynobj, ".interp");
3306 BFD_ASSERT (s != NULL);
eea6121a 3307 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 3308 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3309 }
3310 }
3311 else
3312 {
3313 /* We may have created entries in the .rela.got section.
3314 However, if we are not creating the dynamic sections, we will
3315 not actually use these entries. Reset the size of .rela.got,
3316 which will cause it to get stripped from the output file
3317 below. */
3318 s = bfd_get_section_by_name (dynobj, ".rela.got");
3319 if (s != NULL)
eea6121a 3320 s->size = 0;
252b5132
RH		 3321 }
3322
b6152c34
AS		 3323 /* If this is a -Bsymbolic shared link, then we need to discard all
3324 PC relative relocs against symbols defined in a regular object.
3325 For the normal shared case we discard the PC relative relocs
3326 against symbols that have become local due to visibility changes.
3327 We allocated space for them in the check_relocs routine, but we
3328 will not fill them in in the relocate_section routine. */
3329 if (info->shared)
0cca5f05
AS		 3330 elf_link_hash_traverse (elf_hash_table (info),
3331 elf_m68k_discard_copies,
3332 (PTR) info);
252b5132
RH		 3333
3334 /* The check_relocs and adjust_dynamic_symbol entry points have
3335 determined the sizes of the various dynamic sections. Allocate
3336 memory for them. */
b34976b6
AM		 3337 plt = FALSE;
3338 relocs = FALSE;
252b5132
RH		 3339 for (s = dynobj->sections; s != NULL; s = s->next)
3340 {
3341 const char *name;
252b5132
RH		 3342
3343 if ((s->flags & SEC_LINKER_CREATED) == 0)
3344 continue;
3345
3346 /* It's OK to base decisions on the section name, because none
3347 of the dynobj section names depend upon the input files. */
3348 name = bfd_get_section_name (dynobj, s);
3349
252b5132
RH		 3350 if (strcmp (name, ".plt") == 0)
3351 {
c456f082
AM		 3352 /* Remember whether there is a PLT. */
3353 plt = s->size != 0;
252b5132 3354 }
0112cd26 3355 else if (CONST_STRNEQ (name, ".rela"))
252b5132 3356 {
c456f082 3357 if (s->size != 0)
252b5132 3358 {
b34976b6 3359 relocs = TRUE;
252b5132
RH		 3360
3361 /* We use the reloc_count field as a counter if we need
3362 to copy relocs into the output file. */
3363 s->reloc_count = 0;
3364 }
3365 }
0112cd26 3366 else if (! CONST_STRNEQ (name, ".got")
c456f082 3367 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 3368 {
3369 /* It's not one of our sections, so don't allocate space. */
3370 continue;
3371 }
3372
c456f082 3373 if (s->size == 0)
252b5132 3374 {
c456f082
AM		 3375 /* If we don't need this section, strip it from the
3376 output file. This is mostly to handle .rela.bss and
3377 .rela.plt. We must create both sections in
3378 create_dynamic_sections, because they must be created
3379 before the linker maps input sections to output
3380 sections. The linker does that before
3381 adjust_dynamic_symbol is called, and it is that
3382 function which decides whether anything needs to go
3383 into these sections. */
8423293d 3384 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3385 continue;
3386 }
3387
c456f082
AM		 3388 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3389 continue;
3390
252b5132 3391 /* Allocate memory for the section contents. */
7a9af8c4
NC		 3392 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3393 Unused entries should be reclaimed before the section's contents
3394 are written out, but at the moment this does not happen. Thus in
3395 order to prevent writing out garbage, we initialise the section's
3396 contents to zero. */
eea6121a 3397 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 3398 if (s->contents == NULL)
b34976b6 3399 return FALSE;
252b5132
RH		 3400 }
3401
3402 if (elf_hash_table (info)->dynamic_sections_created)
3403 {
3404 /* Add some entries to the .dynamic section. We fill in the
3405 values later, in elf_m68k_finish_dynamic_sections, but we
3406 must add the entries now so that we get the correct size for
3407 the .dynamic section. The DT_DEBUG entry is filled in by the
3408 dynamic linker and used by the debugger. */
dc810e39 3409#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3410 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3411
252b5132
RH		 3412 if (!info->shared)
3413 {
dc810e39 3414 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3415 return FALSE;
252b5132
RH		 3416 }
3417
3418 if (plt)
3419 {
dc810e39
AM		 3420 if (!add_dynamic_entry (DT_PLTGOT, 0)
3421 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3422 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3423 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3424 return FALSE;
252b5132
RH		 3425 }
3426
3427 if (relocs)
3428 {
dc810e39
AM		 3429 if (!add_dynamic_entry (DT_RELA, 0)
3430 || !add_dynamic_entry (DT_RELASZ, 0)
3431 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
b34976b6 3432 return FALSE;
252b5132
RH		 3433 }
3434
aa91b392 3435 if ((info->flags & DF_TEXTREL) != 0)
252b5132 3436 {
dc810e39 3437 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3438 return FALSE;
252b5132
RH		 3439 }
3440 }
dc810e39 3441#undef add_dynamic_entry
252b5132 3442
b34976b6 3443 return TRUE;
252b5132
RH		 3444}
3445
0cca5f05 3446/* This function is called via elf_link_hash_traverse if we are
b6152c34
AS		 3447 creating a shared object. In the -Bsymbolic case it discards the
3448 space allocated to copy PC relative relocs against symbols which
3e829b4a 3449 are defined in regular objects. For the normal shared case, it
b6152c34
AS		 3450 discards space for pc-relative relocs that have become local due to
3451 symbol visibility changes. We allocated space for them in the
3452 check_relocs routine, but we won't fill them in in the
3e829b4a
AS		 3453 relocate_section routine.
3454
3455 We also check whether any of the remaining relocations apply
3456 against a readonly section, and set the DF_TEXTREL flag in this
3457 case. */
252b5132 3458
b34976b6 3459static bfd_boolean
b6152c34 3460elf_m68k_discard_copies (h, inf)
0cca5f05 3461 struct elf_link_hash_entry *h;
b6152c34 3462 PTR inf;
252b5132 3463{
b6152c34 3464 struct bfd_link_info *info = (struct bfd_link_info *) inf;
252b5132
RH		 3465 struct elf_m68k_pcrel_relocs_copied *s;
3466
2516a1ee 3467 if (!SYMBOL_CALLS_LOCAL (info, h))
3e829b4a
AS		 3468 {
3469 if ((info->flags & DF_TEXTREL) == 0)
3470 {
3471 /* Look for relocations against read-only sections. */
0cca5f05
AS		 3472 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3473 s != NULL;
3474 s = s->next)
3e829b4a
AS		 3475 if ((s->section->flags & SEC_READONLY) != 0)
3476 {
3477 info->flags |= DF_TEXTREL;
3478 break;
3479 }
3480 }
0cca5f05 3481
3e829b4a
AS		 3482 return TRUE;
3483 }
252b5132 3484
0cca5f05
AS		 3485 for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3486 s != NULL;
3487 s = s->next)
eea6121a 3488 s->section->size -= s->count * sizeof (Elf32_External_Rela);
252b5132 3489
b34976b6 3490 return TRUE;
252b5132
RH		 3491}
3492
cf869cce
NC		 3493
3494/* Install relocation RELA. */
3495
3496static void
3497elf_m68k_install_rela (bfd *output_bfd,
3498 asection *srela,
3499 Elf_Internal_Rela *rela)
3500{
3501 bfd_byte *loc;
3502
3503 loc = srela->contents;
3504 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3505 bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
3506}
3507
325e58c7
NC		 3508/* Find the base offsets for thread-local storage in this object,
3509 for GD/LD and IE/LE respectively. */
3510
3511#define DTP_OFFSET 0x8000
3512#define TP_OFFSET 0x7000
cf869cce
NC		 3513
3514static bfd_vma
3515dtpoff_base (struct bfd_link_info *info)
3516{
3517 /* If tls_sec is NULL, we should have signalled an error already. */
3518 if (elf_hash_table (info)->tls_sec == NULL)
3519 return 0;
325e58c7 3520 return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET;
cf869cce
NC		 3521}
3522
cf869cce 3523static bfd_vma
325e58c7 3524tpoff_base (struct bfd_link_info *info)
cf869cce 3525{
cf869cce 3526 /* If tls_sec is NULL, we should have signalled an error already. */
325e58c7 3527 if (elf_hash_table (info)->tls_sec == NULL)
cf869cce 3528 return 0;
325e58c7
NC		 3529 return elf_hash_table (info)->tls_sec->vma + TP_OFFSET;
3530}
3531
3532/* Output necessary relocation to handle a symbol during static link.
3533 This function is called from elf_m68k_relocate_section. */
3534
3535static void
3536elf_m68k_init_got_entry_static (struct bfd_link_info *info,
3537 bfd *output_bfd,
3538 enum elf_m68k_reloc_type r_type,
3539 asection *sgot,
3540 bfd_vma got_entry_offset,
3541 bfd_vma relocation)
3542{
3543 switch (elf_m68k_reloc_got_type (r_type))
3544 {
3545 case R_68K_GOT32O:
3546 bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset);
3547 break;
3548
3549 case R_68K_TLS_GD32:
3550 /* We know the offset within the module,
3551 put it into the second GOT slot. */
3552 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3553 sgot->contents + got_entry_offset + 4);
3554 /* FALLTHRU */
3555
3556 case R_68K_TLS_LDM32:
3557 /* Mark it as belonging to module 1, the executable. */
3558 bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset);
3559 break;
3560
3561 case R_68K_TLS_IE32:
3562 bfd_put_32 (output_bfd, relocation - tpoff_base (info),
3563 sgot->contents + got_entry_offset);
3564 break;
3565
3566 default:
3567 BFD_ASSERT (FALSE);
3568 }
3569}
3570
3571/* Output necessary relocation to handle a local symbol
3572 during dynamic link.
3573 This function is called either from elf_m68k_relocate_section
3574 or from elf_m68k_finish_dynamic_symbol. */
3575
3576static void
3577elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info,
3578 bfd *output_bfd,
3579 enum elf_m68k_reloc_type r_type,
3580 asection *sgot,
3581 bfd_vma got_entry_offset,
3582 bfd_vma relocation,
3583 asection *srela)
3584{
3585 Elf_Internal_Rela outrel;
3586
3587 switch (elf_m68k_reloc_got_type (r_type))
3588 {
3589 case R_68K_GOT32O:
3590 /* Emit RELATIVE relocation to initialize GOT slot
3591 at run-time. */
3592 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3593 outrel.r_addend = relocation;
3594 break;
3595
3596 case R_68K_TLS_GD32:
3597 /* We know the offset within the module,
3598 put it into the second GOT slot. */
3599 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3600 sgot->contents + got_entry_offset + 4);
3601 /* FALLTHRU */
3602
3603 case R_68K_TLS_LDM32:
3604 /* We don't know the module number,
3605 create a relocation for it. */
3606 outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32);
3607 outrel.r_addend = 0;
3608 break;
3609
3610 case R_68K_TLS_IE32:
3611 /* Emit TPREL relocation to initialize GOT slot
3612 at run-time. */
3613 outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32);
3614 outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma;
3615 break;
3616
3617 default:
3618 BFD_ASSERT (FALSE);
3619 }
3620
3621 /* Offset of the GOT entry. */
3622 outrel.r_offset = (sgot->output_section->vma
3623 + sgot->output_offset
3624 + got_entry_offset);
3625
3626 /* Install one of the above relocations. */
3627 elf_m68k_install_rela (output_bfd, srela, &outrel);
3628
3629 bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset);
cf869cce
NC		 3630}
3631
252b5132
RH		 3632/* Relocate an M68K ELF section. */
3633
b34976b6 3634static bfd_boolean
252b5132
RH		 3635elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
3636 contents, relocs, local_syms, local_sections)
3637 bfd *output_bfd;
3638 struct bfd_link_info *info;
3639 bfd *input_bfd;
3640 asection *input_section;
3641 bfd_byte *contents;
3642 Elf_Internal_Rela *relocs;
3643 Elf_Internal_Sym *local_syms;
3644 asection **local_sections;
3645{
3646 bfd *dynobj;
3647 Elf_Internal_Shdr *symtab_hdr;
3648 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 3649 asection *sgot;
3650 asection *splt;
3651 asection *sreloc;
325e58c7 3652 asection *srela;
7fb9f789 3653 struct elf_m68k_got *got;
252b5132
RH		 3654 Elf_Internal_Rela *rel;
3655 Elf_Internal_Rela *relend;
3656
3657 dynobj = elf_hash_table (info)->dynobj;
3658 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3659 sym_hashes = elf_sym_hashes (input_bfd);
252b5132
RH		 3660
3661 sgot = NULL;
3662 splt = NULL;
3663 sreloc = NULL;
325e58c7 3664 srela = NULL;
252b5132 3665
7fb9f789
NC		 3666 got = NULL;
3667
252b5132
RH		 3668 rel = relocs;
3669 relend = relocs + input_section->reloc_count;
3670 for (; rel < relend; rel++)
3671 {
3672 int r_type;
3673 reloc_howto_type *howto;
3674 unsigned long r_symndx;
3675 struct elf_link_hash_entry *h;
3676 Elf_Internal_Sym *sym;
3677 asection *sec;
3678 bfd_vma relocation;
44f745a6 3679 bfd_boolean unresolved_reloc;
252b5132
RH		 3680 bfd_reloc_status_type r;
3681
3682 r_type = ELF32_R_TYPE (rel->r_info);
3683 if (r_type < 0 || r_type >= (int) R_68K_max)
3684 {
3685 bfd_set_error (bfd_error_bad_value);
b34976b6 3686 return FALSE;
252b5132
RH		 3687 }
3688 howto = howto_table + r_type;
3689
3690 r_symndx = ELF32_R_SYM (rel->r_info);
3691
252b5132
RH		 3692 h = NULL;
3693 sym = NULL;
3694 sec = NULL;
44f745a6 3695 unresolved_reloc = FALSE;
560e09e9 3696
252b5132
RH		 3697 if (r_symndx < symtab_hdr->sh_info)
3698 {
3699 sym = local_syms + r_symndx;
3700 sec = local_sections[r_symndx];
8517fae7 3701 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 3702 }
3703 else
3704 {
560e09e9
NC		 3705 bfd_boolean warned;
3706
b2a8e766
AM		 3707 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3708 r_symndx, symtab_hdr, sym_hashes,
3709 h, sec, relocation,
3710 unresolved_reloc, warned);
252b5132
RH		 3711 }
3712
dbaa2011 3713 if (sec != NULL && discarded_section (sec))
e4067dbb
DJ		 3714 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3715 rel, relend, howto, contents);
ab96bf03
AM		 3716
3717 if (info->relocatable)
3718 continue;
3719
252b5132
RH		 3720 switch (r_type)
3721 {
3722 case R_68K_GOT8:
3723 case R_68K_GOT16:
3724 case R_68K_GOT32:
3725 /* Relocation is to the address of the entry for this symbol
3726 in the global offset table. */
3727 if (h != NULL
3728 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7fb9f789 3729 {
7fb9f789
NC		 3730 if (elf_m68k_hash_table (info)->local_gp_p)
3731 {
3732 bfd_vma sgot_output_offset;
3733 bfd_vma got_offset;
3734
3735 if (sgot == NULL)
3736 {
3737 sgot = bfd_get_section_by_name (dynobj, ".got");
3738
3739 if (sgot != NULL)
3740 sgot_output_offset = sgot->output_offset;
3741 else
3742 /* In this case we have a reference to
3743 _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3744 empty.
3745 ??? Issue a warning? */
3746 sgot_output_offset = 0;
3747 }
3748 else
3749 sgot_output_offset = sgot->output_offset;
3750
3751 if (got == NULL)
3752 {
3753 struct elf_m68k_bfd2got_entry *bfd2got_entry;
3754
3755 bfd2got_entry
3756 = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3757 input_bfd, SEARCH, NULL);
3758
3759 if (bfd2got_entry != NULL)
3760 {
3761 got = bfd2got_entry->got;
3762 BFD_ASSERT (got != NULL);
3763
3764 got_offset = got->offset;
3765 }
3766 else
3767 /* In this case we have a reference to
3768 _GLOBAL_OFFSET_TABLE_, but no other references
3769 accessing any GOT entries.
3770 ??? Issue a warning? */
3771 got_offset = 0;
3772 }
3773 else
3774 got_offset = got->offset;
3775
3776 /* Adjust GOT pointer to point to the GOT
3777 assigned to input_bfd. */
f57718b4 3778 rel->r_addend += sgot_output_offset + got_offset;
7fb9f789
NC		 3779 }
3780 else
3781 BFD_ASSERT (got == NULL || got->offset == 0);
3782
3783 break;
3784 }
252b5132
RH		 3785 /* Fall through. */
3786 case R_68K_GOT8O:
3787 case R_68K_GOT16O:
3788 case R_68K_GOT32O:
cf869cce
NC		 3789
3790 case R_68K_TLS_LDM32:
3791 case R_68K_TLS_LDM16:
3792 case R_68K_TLS_LDM8:
3793
3794 case R_68K_TLS_GD8:
3795 case R_68K_TLS_GD16:
3796 case R_68K_TLS_GD32:
3797
3798 case R_68K_TLS_IE8:
3799 case R_68K_TLS_IE16:
3800 case R_68K_TLS_IE32:
3801
252b5132
RH		 3802 /* Relocation is the offset of the entry for this symbol in
3803 the global offset table. */
3804
3805 {
7fb9f789
NC		 3806 struct elf_m68k_got_entry_key key_;
3807 bfd_vma *off_ptr;
252b5132
RH		 3808 bfd_vma off;
3809
3810 if (sgot == NULL)
3811 {
3812 sgot = bfd_get_section_by_name (dynobj, ".got");
3813 BFD_ASSERT (sgot != NULL);
3814 }
3815
7fb9f789
NC		 3816 if (got == NULL)
3817 {
3818 got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3819 input_bfd, MUST_FIND,
3820 NULL)->got;
3821 BFD_ASSERT (got != NULL);
3822 }
3823
3824 /* Get GOT offset for this symbol. */
cf869cce
NC		 3825 elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx,
3826 r_type);
7fb9f789
NC		 3827 off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND,
3828 NULL)->u.s2.offset;
3829 off = *off_ptr;
3830
cf869cce
NC		 3831 /* The offset must always be a multiple of 4. We use
3832 the least significant bit to record whether we have
3833 already generated the necessary reloc. */
3834 if ((off & 1) != 0)
3835 off &= ~1;
3836 else
252b5132 3837 {
cf869cce
NC		 3838 if (h != NULL
3839 /* @TLSLDM relocations are bounded to the module, in
3840 which the symbol is defined -- not to the symbol
3841 itself. */
3842 && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32)
252b5132 3843 {
cf869cce
NC		 3844 bfd_boolean dyn;
3845
3846 dyn = elf_hash_table (info)->dynamic_sections_created;
3847 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3848 || (info->shared
3849 && SYMBOL_REFERENCES_LOCAL (info, h))
3850 || (ELF_ST_VISIBILITY (h->other)
3851 && h->root.type == bfd_link_hash_undefweak))
252b5132 3852 {
cf869cce
NC		 3853 /* This is actually a static link, or it is a
3854 -Bsymbolic link and the symbol is defined
3855 locally, or the symbol was forced to be local
325e58c7 3856 because of a version file. We must initialize
cf869cce
NC		 3857 this entry in the global offset table. Since
3858 the offset must always be a multiple of 4, we
3859 use the least significant bit to record whether
3860 we have initialized it already.
3861
3862 When doing a dynamic link, we create a .rela.got
3863 relocation entry to initialize the value. This
3864 is done in the finish_dynamic_symbol routine. */
3865
325e58c7
NC		 3866 elf_m68k_init_got_entry_static (info,
3867 output_bfd,
3868 r_type,
3869 sgot,
3870 off,
3871 relocation);
cf869cce 3872
7fb9f789 3873 *off_ptr |= 1;
252b5132 3874 }
cf869cce
NC		 3875 else
3876 unresolved_reloc = FALSE;
252b5132 3877 }
cf869cce 3878 else if (info->shared) /* && h == NULL */
325e58c7 3879 /* Process local symbol during dynamic link. */
252b5132 3880 {
325e58c7 3881 if (srela == NULL)
252b5132 3882 {
325e58c7
NC		 3883 srela = bfd_get_section_by_name (dynobj, ".rela.got");
3884 BFD_ASSERT (srela != NULL);
cf869cce 3885 }
cf869cce 3886
325e58c7
NC		 3887 elf_m68k_init_got_entry_local_shared (info,
3888 output_bfd,
3889 r_type,
3890 sgot,
3891 off,
3892 relocation,
3893 srela);
cf869cce
NC		 3894
3895 *off_ptr |= 1;
3896 }
3897 else /* h == NULL && !info->shared */
3898 {
325e58c7
NC		 3899 elf_m68k_init_got_entry_static (info,
3900 output_bfd,
3901 r_type,
3902 sgot,
3903 off,
3904 relocation);
252b5132 3905
7fb9f789 3906 *off_ptr |= 1;
252b5132
RH		 3907 }
3908 }
3909
cf869cce
NC		 3910 /* We don't use elf_m68k_reloc_got_type in the condition below
3911 because this is the only place where difference between
3912 R_68K_GOTx and R_68K_GOTxO relocations matters. */
3913 if (r_type == R_68K_GOT32O
252b5132 3914 || r_type == R_68K_GOT16O
cf869cce
NC		 3915 || r_type == R_68K_GOT8O
3916 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32
3917 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32
3918 || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32)
252b5132 3919 {
7fb9f789
NC		 3920 /* GOT pointer is adjusted to point to the start/middle
3921 of local GOT. Adjust the offset accordingly. */
3922 BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p
3923 || off >= got->offset);
3924
3925 if (elf_m68k_hash_table (info)->local_gp_p)
3926 relocation = off - got->offset;
3927 else
3928 {
3929 BFD_ASSERT (got->offset == 0);
3930 relocation = sgot->output_offset + off;
3931 }
3932
252b5132
RH		 3933 /* This relocation does not use the addend. */
3934 rel->r_addend = 0;
3935 }
3936 else
7fb9f789
NC		 3937 relocation = (sgot->output_section->vma + sgot->output_offset
3938 + off);
252b5132
RH		 3939 }
3940 break;
3941
cf869cce
NC		 3942 case R_68K_TLS_LDO32:
3943 case R_68K_TLS_LDO16:
3944 case R_68K_TLS_LDO8:
3945 relocation -= dtpoff_base (info);
3946 break;
3947
3948 case R_68K_TLS_LE32:
3949 case R_68K_TLS_LE16:
3950 case R_68K_TLS_LE8:
3a4ae681 3951 if (info->shared && !info->pie)
cf869cce
NC		 3952 {
3953 (*_bfd_error_handler)
3954 (_("%B(%A+0x%lx): R_68K_TLS_LE32 relocation not permitted "
3955 "in shared object"),
3956 input_bfd, input_section, (long) rel->r_offset, howto->name);
3957
3958 return FALSE;
3959 }
3960 else
325e58c7 3961 relocation -= tpoff_base (info);
cf869cce
NC		 3962
3963 break;
3964
252b5132
RH		 3965 case R_68K_PLT8:
3966 case R_68K_PLT16:
3967 case R_68K_PLT32:
3968 /* Relocation is to the entry for this symbol in the
3969 procedure linkage table. */
3970
3971 /* Resolve a PLTxx reloc against a local symbol directly,
3972 without using the procedure linkage table. */
3973 if (h == NULL)
3974 break;
3975
3976 if (h->plt.offset == (bfd_vma) -1
3977 || !elf_hash_table (info)->dynamic_sections_created)
3978 {
3979 /* We didn't make a PLT entry for this symbol. This
3980 happens when statically linking PIC code, or when
3981 using -Bsymbolic. */
3982 break;
3983 }
3984
3985 if (splt == NULL)
3986 {
3987 splt = bfd_get_section_by_name (dynobj, ".plt");
3988 BFD_ASSERT (splt != NULL);
3989 }
3990
3991 relocation = (splt->output_section->vma
3992 + splt->output_offset
3993 + h->plt.offset);
44f745a6 3994 unresolved_reloc = FALSE;
252b5132
RH		 3995 break;
3996
3997 case R_68K_PLT8O:
3998 case R_68K_PLT16O:
3999 case R_68K_PLT32O:
4000 /* Relocation is the offset of the entry for this symbol in
4001 the procedure linkage table. */
4002 BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
4003
4004 if (splt == NULL)
4005 {
4006 splt = bfd_get_section_by_name (dynobj, ".plt");
4007 BFD_ASSERT (splt != NULL);
4008 }
4009
4010 relocation = h->plt.offset;
44f745a6 4011 unresolved_reloc = FALSE;
252b5132
RH		 4012
4013 /* This relocation does not use the addend. */
4014 rel->r_addend = 0;
4015
4016 break;
4017
252b5132
RH		 4018 case R_68K_8:
4019 case R_68K_16:
4020 case R_68K_32:
2516a1ee
AS		 4021 case R_68K_PC8:
4022 case R_68K_PC16:
4023 case R_68K_PC32:
252b5132 4024 if (info->shared
cf35638d 4025 && r_symndx != STN_UNDEF
252b5132 4026 && (input_section->flags & SEC_ALLOC) != 0
d2ff124f
AS		 4027 && (h == NULL
4028 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4029 || h->root.type != bfd_link_hash_undefweak)
252b5132
RH		 4030 && ((r_type != R_68K_PC8
4031 && r_type != R_68K_PC16
4032 && r_type != R_68K_PC32)
2516a1ee 4033 || !SYMBOL_CALLS_LOCAL (info, h)))
252b5132
RH		 4034 {
4035 Elf_Internal_Rela outrel;
947216bf 4036 bfd_byte *loc;
b34976b6 4037 bfd_boolean skip, relocate;
252b5132
RH		 4038
4039 /* When generating a shared object, these relocations
4040 are copied into the output file to be resolved at run
4041 time. */
4042
b34976b6
AM		 4043 skip = FALSE;
4044 relocate = FALSE;
252b5132 4045
c629eae0
JJ		 4046 outrel.r_offset =
4047 _bfd_elf_section_offset (output_bfd, info, input_section,
4048 rel->r_offset);
4049 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4050 skip = TRUE;
0bb2d96a 4051 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4052 skip = TRUE, relocate = TRUE;
252b5132
RH		 4053 outrel.r_offset += (input_section->output_section->vma
4054 + input_section->output_offset);
4055
4056 if (skip)
0bb2d96a 4057 memset (&outrel, 0, sizeof outrel);
252b5132 4058 else if (h != NULL
d2ff124f
AS		 4059 && h->dynindx != -1
4060 && (r_type == R_68K_PC8
4061 || r_type == R_68K_PC16
4062 || r_type == R_68K_PC32
4063 || !info->shared
4064 || !info->symbolic
f5385ebf 4065 || !h->def_regular))
252b5132 4066 {
252b5132 4067 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
d2ff124f 4068 outrel.r_addend = rel->r_addend;
252b5132
RH		 4069 }
4070 else
4071 {
d2ff124f 4072 /* This symbol is local, or marked to become local. */
74541ad4
AM		 4073 outrel.r_addend = relocation + rel->r_addend;
4074
252b5132
RH		 4075 if (r_type == R_68K_32)
4076 {
b34976b6 4077 relocate = TRUE;
252b5132 4078 outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
252b5132
RH		 4079 }
4080 else
4081 {
4082 long indx;
4083
8517fae7 4084 if (bfd_is_abs_section (sec))
252b5132
RH		 4085 indx = 0;
4086 else if (sec == NULL || sec->owner == NULL)
4087 {
4088 bfd_set_error (bfd_error_bad_value);
b34976b6 4089 return FALSE;
252b5132
RH		 4090 }
4091 else
4092 {
4093 asection *osec;
4094
74541ad4
AM		 4095 /* We are turning this relocation into one
4096 against a section symbol. It would be
4097 proper to subtract the symbol's value,
4098 osec->vma, from the emitted reloc addend,
4099 but ld.so expects buggy relocs. */
252b5132
RH		 4100 osec = sec->output_section;
4101 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 4102 if (indx == 0)
4103 {
4104 struct elf_link_hash_table *htab;
4105 htab = elf_hash_table (info);
4106 osec = htab->text_index_section;
4107 indx = elf_section_data (osec)->dynindx;
4108 }
4109 BFD_ASSERT (indx != 0);
252b5132
RH		 4110 }
4111
252b5132 4112 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 4113 }
4114 }
4115
d2ff124f
AS		 4116 sreloc = elf_section_data (input_section)->sreloc;
4117 if (sreloc == NULL)
4118 abort ();
4119
947216bf
AM		 4120 loc = sreloc->contents;
4121 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4122 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132
RH		 4123
4124 /* This reloc will be computed at runtime, so there's no
4125 need to do anything now, except for R_68K_32
4126 relocations that have been turned into
4127 R_68K_RELATIVE. */
4128 if (!relocate)
4129 continue;
4130 }
4131
4132 break;
4133
4134 case R_68K_GNU_VTINHERIT:
4135 case R_68K_GNU_VTENTRY:
4136 /* These are no-ops in the end. */
4137 continue;
4138
4139 default:
4140 break;
4141 }
4142
44f745a6
AS		 4143 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4144 because such sections are not SEC_ALLOC and thus ld.so will
4145 not process them. */
4146 if (unresolved_reloc
4147 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4148 && h->def_dynamic)
4149 && _bfd_elf_section_offset (output_bfd, info, input_section,
4150 rel->r_offset) != (bfd_vma) -1)
44f745a6
AS		 4151 {
4152 (*_bfd_error_handler)
843fe662 4153 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4154 input_bfd,
4155 input_section,
44f745a6 4156 (long) rel->r_offset,
843fe662 4157 howto->name,
44f745a6
AS		 4158 h->root.root.string);
4159 return FALSE;
4160 }
4161
cf35638d 4162 if (r_symndx != STN_UNDEF
cf869cce
NC		 4163 && r_type != R_68K_NONE
4164 && (h == NULL
4165 || h->root.type == bfd_link_hash_defined
4166 || h->root.type == bfd_link_hash_defweak))
4167 {
4168 char sym_type;
4169
4170 sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type;
4171
4172 if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS))
4173 {
4174 const char *name;
4175
4176 if (h != NULL)
4177 name = h->root.root.string;
4178 else
4179 {
4180 name = (bfd_elf_string_from_elf_section
4181 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4182 if (name == NULL || *name == '\0')
4183 name = bfd_section_name (input_bfd, sec);
4184 }
4185
4186 (*_bfd_error_handler)
4187 ((sym_type == STT_TLS
4188 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
4189 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
4190 input_bfd,
4191 input_section,
4192 (long) rel->r_offset,
4193 howto->name,
4194 name);
4195 }
4196 }
4197
252b5132
RH		 4198 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4199 contents, rel->r_offset,
4200 relocation, rel->r_addend);
4201
4202 if (r != bfd_reloc_ok)
4203 {
44f745a6
AS		 4204 const char *name;
4205
4206 if (h != NULL)
4207 name = h->root.root.string;
4208 else
252b5132 4209 {
44f745a6
AS		 4210 name = bfd_elf_string_from_elf_section (input_bfd,
4211 symtab_hdr->sh_link,
4212 sym->st_name);
4213 if (name == NULL)
4214 return FALSE;
4215 if (*name == '\0')
4216 name = bfd_section_name (input_bfd, sec);
4217 }
252b5132 4218
44f745a6
AS		 4219 if (r == bfd_reloc_overflow)
4220 {
4221 if (!(info->callbacks->reloc_overflow
dfeffb9f
L		 4222 (info, (h ? &h->root : NULL), name, howto->name,
4223 (bfd_vma) 0, input_bfd, input_section,
4224 rel->r_offset)))
44f745a6
AS		 4225 return FALSE;
4226 }
4227 else
4228 {
4229 (*_bfd_error_handler)
d003868e
AM		 4230 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4231 input_bfd, input_section,
44f745a6
AS		 4232 (long) rel->r_offset, name, (int) r);
4233 return FALSE;
252b5132
RH		 4234 }
4235 }
4236 }
4237
b34976b6 4238 return TRUE;
252b5132
RH		 4239}
4240
cc3e26be
RS		 4241/* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
4242 into section SEC. */
4243
4244static void
4245elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
4246{
4247 /* Make VALUE PC-relative. */
4248 value -= sec->output_section->vma + offset;
4249
4250 /* Apply any in-place addend. */
4251 value += bfd_get_32 (sec->owner, sec->contents + offset);
4252
4253 bfd_put_32 (sec->owner, value, sec->contents + offset);
4254}
4255
252b5132
RH		 4256/* Finish up dynamic symbol handling. We set the contents of various
4257 dynamic sections here. */
4258
b34976b6 4259static bfd_boolean
252b5132
RH		 4260elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym)
4261 bfd *output_bfd;
4262 struct bfd_link_info *info;
4263 struct elf_link_hash_entry *h;
4264 Elf_Internal_Sym *sym;
4265{
4266 bfd *dynobj;
4267
4268 dynobj = elf_hash_table (info)->dynobj;
4269
4270 if (h->plt.offset != (bfd_vma) -1)
4271 {
cc3e26be 4272 const struct elf_m68k_plt_info *plt_info;
252b5132
RH		 4273 asection *splt;
4274 asection *sgot;
4275 asection *srela;
4276 bfd_vma plt_index;
4277 bfd_vma got_offset;
4278 Elf_Internal_Rela rela;
947216bf 4279 bfd_byte *loc;
252b5132
RH		 4280
4281 /* This symbol has an entry in the procedure linkage table. Set
4282 it up. */
4283
4284 BFD_ASSERT (h->dynindx != -1);
4285
cc3e26be 4286 plt_info = elf_m68k_hash_table (info)->plt_info;
252b5132
RH		 4287 splt = bfd_get_section_by_name (dynobj, ".plt");
4288 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4289 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
4290 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
4291
4292 /* Get the index in the procedure linkage table which
4293 corresponds to this symbol. This is the index of this symbol
4294 in all the symbols for which we are making plt entries. The
4295 first entry in the procedure linkage table is reserved. */
cc3e26be 4296 plt_index = (h->plt.offset / plt_info->size) - 1;
252b5132
RH		 4297
4298 /* Get the offset into the .got table of the entry that
4299 corresponds to this function. Each .got entry is 4 bytes.
4300 The first three are reserved. */
4301 got_offset = (plt_index + 3) * 4;
4302
cc3e26be
RS		 4303 memcpy (splt->contents + h->plt.offset,
4304 plt_info->symbol_entry,
4305 plt_info->size);
4306
4307 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
4308 (sgot->output_section->vma
4309 + sgot->output_offset
4310 + got_offset));
252b5132
RH		 4311
4312 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
cc3e26be
RS		 4313 splt->contents
4314 + h->plt.offset
4315 + plt_info->symbol_resolve_entry + 2);
4316
4317 elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
4318 splt->output_section->vma);
252b5132
RH		 4319
4320 /* Fill in the entry in the global offset table. */
4321 bfd_put_32 (output_bfd,
4322 (splt->output_section->vma
4323 + splt->output_offset
4324 + h->plt.offset
cc3e26be 4325 + plt_info->symbol_resolve_entry),
252b5132
RH		 4326 sgot->contents + got_offset);
4327
4328 /* Fill in the entry in the .rela.plt section. */
4329 rela.r_offset = (sgot->output_section->vma
4330 + sgot->output_offset
4331 + got_offset);
4332 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
4333 rela.r_addend = 0;
947216bf
AM		 4334 loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
4335 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
252b5132 4336
f5385ebf 4337 if (!h->def_regular)
252b5132
RH		 4338 {
4339 /* Mark the symbol as undefined, rather than as defined in
4340 the .plt section. Leave the value alone. */
4341 sym->st_shndx = SHN_UNDEF;
4342 }
4343 }
4344
7fb9f789 4345 if (elf_m68k_hash_entry (h)->glist != NULL)
252b5132
RH		 4346 {
4347 asection *sgot;
4348 asection *srela;
7fb9f789 4349 struct elf_m68k_got_entry *got_entry;
252b5132
RH		 4350
4351 /* This symbol has an entry in the global offset table. Set it
4352 up. */
4353
4354 sgot = bfd_get_section_by_name (dynobj, ".got");
4355 srela = bfd_get_section_by_name (dynobj, ".rela.got");
4356 BFD_ASSERT (sgot != NULL && srela != NULL);
4357
7fb9f789
NC		 4358 got_entry = elf_m68k_hash_entry (h)->glist;
4359
4360 while (got_entry != NULL)
252b5132 4361 {
325e58c7 4362 enum elf_m68k_reloc_type r_type;
cf869cce
NC		 4363 bfd_vma got_entry_offset;
4364
325e58c7 4365 r_type = got_entry->key_.type;
cf869cce 4366 got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1;
7fb9f789 4367
7fb9f789
NC		 4368 /* If this is a -Bsymbolic link, and the symbol is defined
4369 locally, we just want to emit a RELATIVE reloc. Likewise if
4370 the symbol was forced to be local because of a version file.
cf869cce 4371 The entry in the global offset table already have been
7fb9f789
NC		 4372 initialized in the relocate_section function. */
4373 if (info->shared
2516a1ee 4374 && SYMBOL_REFERENCES_LOCAL (info, h))
7fb9f789 4375 {
325e58c7 4376 bfd_vma relocation;
cf869cce 4377
325e58c7
NC		 4378 relocation = bfd_get_signed_32 (output_bfd,
4379 (sgot->contents
4380 + got_entry_offset));
4381
4382 /* Undo TP bias. */
4383 switch (elf_m68k_reloc_got_type (r_type))
cf869cce
NC		 4384 {
4385 case R_68K_GOT32O:
325e58c7 4386 case R_68K_TLS_LDM32:
cf869cce
NC		 4387 break;
4388
4389 case R_68K_TLS_GD32:
93b3ac75
AS		 4390 /* The value for this relocation is actually put in
4391 the second GOT slot. */
4392 relocation = bfd_get_signed_32 (output_bfd,
4393 (sgot->contents
4394 + got_entry_offset + 4));
325e58c7 4395 relocation += dtpoff_base (info);
cf869cce
NC		 4396 break;
4397
4398 case R_68K_TLS_IE32:
325e58c7 4399 relocation += tpoff_base (info);
cf869cce
NC		 4400 break;
4401
4402 default:
4403 BFD_ASSERT (FALSE);
cf869cce
NC		 4404 }
4405
325e58c7
NC		 4406 elf_m68k_init_got_entry_local_shared (info,
4407 output_bfd,
4408 r_type,
4409 sgot,
4410 got_entry_offset,
4411 relocation,
4412 srela);
7fb9f789
NC		 4413 }
4414 else
4415 {
325e58c7
NC		 4416 Elf_Internal_Rela rela;
4417
cf869cce
NC		 4418 /* Put zeros to GOT slots that will be initialized
4419 at run-time. */
4420 {
4421 bfd_vma n_slots;
4422
4423 n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type);
4424 while (n_slots--)
4425 bfd_put_32 (output_bfd, (bfd_vma) 0,
4426 (sgot->contents + got_entry_offset
4427 + 4 * n_slots));
4428 }
4429
7fb9f789 4430 rela.r_addend = 0;
325e58c7
NC		 4431 rela.r_offset = (sgot->output_section->vma
4432 + sgot->output_offset
4433 + got_entry_offset);
252b5132 4434
325e58c7 4435 switch (elf_m68k_reloc_got_type (r_type))
cf869cce
NC		 4436 {
4437 case R_68K_GOT32O:
4438 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
4439 elf_m68k_install_rela (output_bfd, srela, &rela);
4440 break;
4441
4442 case R_68K_TLS_GD32:
4443 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32);
4444 elf_m68k_install_rela (output_bfd, srela, &rela);
4445
4446 rela.r_offset += 4;
4447 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32);
4448 elf_m68k_install_rela (output_bfd, srela, &rela);
4449 break;
4450
4451 case R_68K_TLS_IE32:
4452 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32);
4453 elf_m68k_install_rela (output_bfd, srela, &rela);
4454 break;
4455
4456 default:
4457 BFD_ASSERT (FALSE);
4458 break;
4459 }
4460 }
7fb9f789
NC		 4461
4462 got_entry = got_entry->u.s2.next;
4463 }
252b5132
RH		 4464 }
4465
f5385ebf 4466 if (h->needs_copy)
252b5132
RH		 4467 {
4468 asection *s;
4469 Elf_Internal_Rela rela;
947216bf 4470 bfd_byte *loc;
252b5132
RH		 4471
4472 /* This symbol needs a copy reloc. Set it up. */
4473
4474 BFD_ASSERT (h->dynindx != -1
4475 && (h->root.type == bfd_link_hash_defined
4476 || h->root.type == bfd_link_hash_defweak));
4477
4478 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4479 ".rela.bss");
4480 BFD_ASSERT (s != NULL);
4481
4482 rela.r_offset = (h->root.u.def.value
4483 + h->root.u.def.section->output_section->vma
4484 + h->root.u.def.section->output_offset);
4485 rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
4486 rela.r_addend = 0;
947216bf
AM		 4487 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4488 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
252b5132
RH		 4489 }
4490
4491 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4492 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 4493 || h == elf_hash_table (info)->hgot)
252b5132
RH		 4494 sym->st_shndx = SHN_ABS;
4495
b34976b6 4496 return TRUE;
252b5132
RH		 4497}
4498
4499/* Finish up the dynamic sections. */
4500
b34976b6 4501static bfd_boolean
252b5132
RH		 4502elf_m68k_finish_dynamic_sections (output_bfd, info)
4503 bfd *output_bfd;
4504 struct bfd_link_info *info;
4505{
4506 bfd *dynobj;
4507 asection *sgot;
4508 asection *sdyn;
4509
4510 dynobj = elf_hash_table (info)->dynobj;
4511
4512 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4513 BFD_ASSERT (sgot != NULL);
4514 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4515
4516 if (elf_hash_table (info)->dynamic_sections_created)
4517 {
4518 asection *splt;
4519 Elf32_External_Dyn *dyncon, *dynconend;
4520
4521 splt = bfd_get_section_by_name (dynobj, ".plt");
4522 BFD_ASSERT (splt != NULL && sdyn != NULL);
4523
4524 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4525 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4526 for (; dyncon < dynconend; dyncon++)
4527 {
4528 Elf_Internal_Dyn dyn;
4529 const char *name;
4530 asection *s;
4531
4532 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4533
4534 switch (dyn.d_tag)
4535 {
4536 default:
4537 break;
4538
4539 case DT_PLTGOT:
4540 name = ".got";
4541 goto get_vma;
4542 case DT_JMPREL:
4543 name = ".rela.plt";
4544 get_vma:
4545 s = bfd_get_section_by_name (output_bfd, name);
4546 BFD_ASSERT (s != NULL);
4547 dyn.d_un.d_ptr = s->vma;
4548 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4549 break;
4550
4551 case DT_PLTRELSZ:
4552 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4553 BFD_ASSERT (s != NULL);
eea6121a 4554 dyn.d_un.d_val = s->size;
252b5132
RH		 4555 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4556 break;
4557
4558 case DT_RELASZ:
4559 /* The procedure linkage table relocs (DT_JMPREL) should
4560 not be included in the overall relocs (DT_RELA).
4561 Therefore, we override the DT_RELASZ entry here to
4562 make it not include the JMPREL relocs. Since the
4563 linker script arranges for .rela.plt to follow all
4564 other relocation sections, we don't have to worry
4565 about changing the DT_RELA entry. */
4566 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4567 if (s != NULL)
eea6121a 4568 dyn.d_un.d_val -= s->size;
252b5132
RH		 4569 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4570 break;
4571 }
4572 }
4573
4574 /* Fill in the first entry in the procedure linkage table. */
eea6121a 4575 if (splt->size > 0)
252b5132 4576 {
cc3e26be
RS		 4577 const struct elf_m68k_plt_info *plt_info;
4578
4579 plt_info = elf_m68k_hash_table (info)->plt_info;
4580 memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
4581
4582 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
4583 (sgot->output_section->vma
4584 + sgot->output_offset
4585 + 4));
4586
4587 elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
4588 (sgot->output_section->vma
4589 + sgot->output_offset
4590 + 8));
4591
4592 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4593 = plt_info->size;
252b5132 4594 }
252b5132
RH		 4595 }
4596
4597 /* Fill in the first three entries in the global offset table. */
eea6121a 4598 if (sgot->size > 0)
252b5132
RH		 4599 {
4600 if (sdyn == NULL)
4601 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4602 else
4603 bfd_put_32 (output_bfd,
4604 sdyn->output_section->vma + sdyn->output_offset,
4605 sgot->contents);
4606 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4607 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4608 }
4609
4610 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4611
b34976b6 4612 return TRUE;
252b5132
RH		 4613}
4614
0752970e
NC		 4615/* Given a .data section and a .emreloc in-memory section, store
4616 relocation information into the .emreloc section which can be
4617 used at runtime to relocate the section. This is called by the
4618 linker when the --embedded-relocs switch is used. This is called
4619 after the add_symbols entry point has been called for all the
4620 objects, and before the final_link entry point is called. */
4621
b34976b6 4622bfd_boolean
0752970e
NC		 4623bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
4624 bfd *abfd;
4625 struct bfd_link_info *info;
4626 asection *datasec;
4627 asection *relsec;
4628 char **errmsg;
4629{
4630 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc
AM		 4631 Elf_Internal_Sym *isymbuf = NULL;
4632 Elf_Internal_Rela *internal_relocs = NULL;
0752970e
NC		 4633 Elf_Internal_Rela *irel, *irelend;
4634 bfd_byte *p;
dc810e39 4635 bfd_size_type amt;
0752970e 4636
1049f94e 4637 BFD_ASSERT (! info->relocatable);
0752970e
NC		 4638
4639 *errmsg = NULL;
4640
4641 if (datasec->reloc_count == 0)
b34976b6 4642 return TRUE;
0752970e
NC		 4643
4644 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
9ad5cbcf 4645
0752970e 4646 /* Get a copy of the native relocations. */
45d6a902 4647 internal_relocs = (_bfd_elf_link_read_relocs
0752970e
NC		 4648 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
4649 info->keep_memory));
4650 if (internal_relocs == NULL)
4651 goto error_return;
0752970e 4652
dc810e39
AM		 4653 amt = (bfd_size_type) datasec->reloc_count * 12;
4654 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
0752970e
NC		 4655 if (relsec->contents == NULL)
4656 goto error_return;
4657
4658 p = relsec->contents;
4659
4660 irelend = internal_relocs + datasec->reloc_count;
4661 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
4662 {
4663 asection *targetsec;
4664
4665 /* We are going to write a four byte longword into the runtime
4666 reloc section. The longword will be the address in the data
4667 section which must be relocated. It is followed by the name
4668 of the target section NUL-padded or truncated to 8
4669 characters. */
4670
4671 /* We can only relocate absolute longword relocs at run time. */
4672 if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
4673 {
4674 *errmsg = _("unsupported reloc type");
4675 bfd_set_error (bfd_error_bad_value);
4676 goto error_return;
4677 }
4678
4679 /* Get the target section referred to by the reloc. */
4680 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4681 {
0752970e 4682 /* A local symbol. */
6cdc0ccc
AM		 4683 Elf_Internal_Sym *isym;
4684
4685 /* Read this BFD's local symbols if we haven't done so already. */
4686 if (isymbuf == NULL)
4687 {
4688 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4689 if (isymbuf == NULL)
4690 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4691 symtab_hdr->sh_info, 0,
4692 NULL, NULL, NULL);
4693 if (isymbuf == NULL)
4694 goto error_return;
4695 }
0752970e 4696
6cdc0ccc
AM		 4697 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4698 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
0752970e
NC		 4699 }
4700 else
4701 {
4702 unsigned long indx;
4703 struct elf_link_hash_entry *h;
4704
4705 /* An external symbol. */
4706 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4707 h = elf_sym_hashes (abfd)[indx];
4708 BFD_ASSERT (h != NULL);
4709 if (h->root.type == bfd_link_hash_defined
4710 || h->root.type == bfd_link_hash_defweak)
4711 targetsec = h->root.u.def.section;
4712 else
4713 targetsec = NULL;
4714 }
4715
4716 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
4717 memset (p + 4, 0, 8);
4718 if (targetsec != NULL)
f075ee0c 4719 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
0752970e 4720 }
c3668558 4721
6cdc0ccc
AM		 4722 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4723 free (isymbuf);
4724 if (internal_relocs != NULL
4725 && elf_section_data (datasec)->relocs != internal_relocs)
4726 free (internal_relocs);
b34976b6 4727 return TRUE;
0752970e
NC		 4728
4729error_return:
6cdc0ccc
AM		 4730 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4731 free (isymbuf);
4732 if (internal_relocs != NULL
4733 && elf_section_data (datasec)->relocs != internal_relocs)
4734 free (internal_relocs);
b34976b6 4735 return FALSE;
0752970e
NC		 4736}
4737
7fb9f789
NC		 4738/* Set target options. */
4739
4740void
4741bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling)
4742{
4743 struct elf_m68k_link_hash_table *htab;
b1345da3
MR		 4744 bfd_boolean use_neg_got_offsets_p;
4745 bfd_boolean allow_multigot_p;
4746 bfd_boolean local_gp_p;
7fb9f789
NC		 4747
4748 switch (got_handling)
4749 {
4750 case 0:
4751 /* --got=single. */
b1345da3
MR		 4752 local_gp_p = FALSE;
4753 use_neg_got_offsets_p = FALSE;
4754 allow_multigot_p = FALSE;
7fb9f789
NC		 4755 break;
4756
4757 case 1:
4758 /* --got=negative. */
b1345da3
MR		 4759 local_gp_p = TRUE;
4760 use_neg_got_offsets_p = TRUE;
4761 allow_multigot_p = FALSE;
7fb9f789
NC		 4762 break;
4763
4764 case 2:
4765 /* --got=multigot. */
b1345da3
MR		 4766 local_gp_p = TRUE;
4767 use_neg_got_offsets_p = TRUE;
4768 allow_multigot_p = TRUE;
7fb9f789
NC		 4769 break;
4770
4771 default:
4772 BFD_ASSERT (FALSE);
b1345da3
MR		 4773 return;
4774 }
4775
4776 htab = elf_m68k_hash_table (info);
4777 if (htab != NULL)
4778 {
4779 htab->local_gp_p = local_gp_p;
4780 htab->use_neg_got_offsets_p = use_neg_got_offsets_p;
4781 htab->allow_multigot_p = allow_multigot_p;
7fb9f789
NC		 4782 }
4783}
4784
aa91b392 4785static enum elf_reloc_type_class
f51e552e
AM		 4786elf32_m68k_reloc_type_class (rela)
4787 const Elf_Internal_Rela *rela;
aa91b392 4788{
f51e552e 4789 switch ((int) ELF32_R_TYPE (rela->r_info))
aa91b392
AS		 4790 {
4791 case R_68K_RELATIVE:
4792 return reloc_class_relative;
4793 case R_68K_JMP_SLOT:
4794 return reloc_class_plt;
4795 case R_68K_COPY:
4796 return reloc_class_copy;
4797 default:
4798 return reloc_class_normal;
4799 }
4800}
4801
1715e0e3
AS		 4802/* Return address for Ith PLT stub in section PLT, for relocation REL
4803 or (bfd_vma) -1 if it should not be included. */
4804
4805static bfd_vma
4806elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
4807 const arelent *rel ATTRIBUTE_UNUSED)
4808{
cc3e26be 4809 return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
1715e0e3
AS		 4810}
4811
252b5132
RH		 4812#define TARGET_BIG_SYM bfd_elf32_m68k_vec
4813#define TARGET_BIG_NAME "elf32-m68k"
4814#define ELF_MACHINE_CODE EM_68K
4815#define ELF_MAXPAGESIZE 0x2000
4816#define elf_backend_create_dynamic_sections \
4817 _bfd_elf_create_dynamic_sections
4818#define bfd_elf32_bfd_link_hash_table_create \
4819 elf_m68k_link_hash_table_create
7fb9f789
NC		 4820/* ??? Should it be this macro or bfd_elfNN_bfd_link_hash_table_create? */
4821#define bfd_elf32_bfd_link_hash_table_free \
4822 elf_m68k_link_hash_table_free
4823#define bfd_elf32_bfd_final_link bfd_elf_final_link
252b5132
RH		 4824
4825#define elf_backend_check_relocs elf_m68k_check_relocs
cc3e26be
RS		 4826#define elf_backend_always_size_sections \
4827 elf_m68k_always_size_sections
252b5132
RH		 4828#define elf_backend_adjust_dynamic_symbol \
4829 elf_m68k_adjust_dynamic_symbol
4830#define elf_backend_size_dynamic_sections \
4831 elf_m68k_size_dynamic_sections
fc9f1df9 4832#define elf_backend_final_write_processing elf_m68k_final_write_processing
74541ad4 4833#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH		 4834#define elf_backend_relocate_section elf_m68k_relocate_section
4835#define elf_backend_finish_dynamic_symbol \
4836 elf_m68k_finish_dynamic_symbol
4837#define elf_backend_finish_dynamic_sections \
4838 elf_m68k_finish_dynamic_sections
4839#define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
4840#define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook
7fb9f789 4841#define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
9e1281c7
CM		 4842#define bfd_elf32_bfd_merge_private_bfd_data \
4843 elf32_m68k_merge_private_bfd_data
4844#define bfd_elf32_bfd_set_private_flags \
4845 elf32_m68k_set_private_flags
4846#define bfd_elf32_bfd_print_private_bfd_data \
4847 elf32_m68k_print_private_bfd_data
aa91b392 4848#define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
1715e0e3 4849#define elf_backend_plt_sym_val elf_m68k_plt_sym_val
266abb8f 4850#define elf_backend_object_p elf32_m68k_object_p
9e1281c7 4851
252b5132 4852#define elf_backend_can_gc_sections 1
51b64d56 4853#define elf_backend_can_refcount 1
252b5132
RH		 4854#define elf_backend_want_got_plt 1
4855#define elf_backend_plt_readonly 1
4856#define elf_backend_want_plt_sym 0
4857#define elf_backend_got_header_size 12
b491616a 4858#define elf_backend_rela_normal 1
252b5132
RH		 4859
4860#include "elf32-target.h"
GDB Binutils - Deliverables
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