elf32-m68k.c revision 1.1.1.8 1 1.1 christos /* Motorola 68k series support for 32-bit ELF
2 1.1.1.8 christos Copyright (C) 1993-2019 Free Software Foundation, Inc.
3 1.1 christos
4 1.1 christos This file is part of BFD, the Binary File Descriptor library.
5 1.1 christos
6 1.1 christos This program is free software; you can redistribute it and/or modify
7 1.1 christos it under the terms of the GNU General Public License as published by
8 1.1 christos the Free Software Foundation; either version 3 of the License, or
9 1.1 christos (at your option) any later version.
10 1.1 christos
11 1.1 christos This program is distributed in the hope that it will be useful,
12 1.1 christos but WITHOUT ANY WARRANTY; without even the implied warranty of
13 1.1 christos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 1.1 christos GNU General Public License for more details.
15 1.1 christos
16 1.1 christos You should have received a copy of the GNU General Public License
17 1.1 christos along with this program; if not, write to the Free Software
18 1.1 christos Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 1.1 christos MA 02110-1301, USA. */
20 1.1 christos
21 1.1 christos #include "sysdep.h"
22 1.1 christos #include "bfd.h"
23 1.1 christos #include "bfdlink.h"
24 1.1 christos #include "libbfd.h"
25 1.1 christos #include "elf-bfd.h"
26 1.1 christos #include "elf/m68k.h"
27 1.1 christos #include "opcode/m68k.h"
28 1.1 christos
29 1.1.1.2 christos static bfd_boolean
30 1.1.1.2 christos elf_m68k_discard_copies (struct elf_link_hash_entry *, void *);
31 1.1 christos
32 1.1.1.2 christos static reloc_howto_type howto_table[] =
33 1.1.1.2 christos {
34 1.1.1.8 christos HOWTO(R_68K_NONE, 0, 3, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE),
35 1.1.1.8 christos HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE),
36 1.1.1.8 christos HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE),
37 1.1.1.8 christos HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE),
38 1.1.1.8 christos HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE),
39 1.1.1.8 christos HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE),
40 1.1.1.8 christos HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE),
41 1.1.1.8 christos HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE),
42 1.1.1.8 christos HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE),
43 1.1.1.8 christos HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE),
44 1.1.1.8 christos HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE),
45 1.1.1.8 christos HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE),
46 1.1.1.8 christos HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE),
47 1.1.1.8 christos HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE),
48 1.1.1.8 christos HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE),
49 1.1.1.8 christos HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE),
50 1.1.1.8 christos HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE),
51 1.1.1.8 christos HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE),
52 1.1.1.8 christos HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE),
53 1.1.1.8 christos HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE),
54 1.1.1.8 christos HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE),
55 1.1.1.8 christos HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE),
56 1.1.1.8 christos HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE),
57 1.1 christos /* GNU extension to record C++ vtable hierarchy. */
58 1.1 christos HOWTO (R_68K_GNU_VTINHERIT, /* type */
59 1.1 christos 0, /* rightshift */
60 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
61 1.1 christos 0, /* bitsize */
62 1.1 christos FALSE, /* pc_relative */
63 1.1 christos 0, /* bitpos */
64 1.1 christos complain_overflow_dont, /* complain_on_overflow */
65 1.1 christos NULL, /* special_function */
66 1.1 christos "R_68K_GNU_VTINHERIT", /* name */
67 1.1 christos FALSE, /* partial_inplace */
68 1.1 christos 0, /* src_mask */
69 1.1 christos 0, /* dst_mask */
70 1.1 christos FALSE),
71 1.1 christos /* GNU extension to record C++ vtable member usage. */
72 1.1 christos HOWTO (R_68K_GNU_VTENTRY, /* type */
73 1.1 christos 0, /* rightshift */
74 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
75 1.1 christos 0, /* bitsize */
76 1.1 christos FALSE, /* pc_relative */
77 1.1 christos 0, /* bitpos */
78 1.1 christos complain_overflow_dont, /* complain_on_overflow */
79 1.1 christos _bfd_elf_rel_vtable_reloc_fn, /* special_function */
80 1.1 christos "R_68K_GNU_VTENTRY", /* name */
81 1.1 christos FALSE, /* partial_inplace */
82 1.1 christos 0, /* src_mask */
83 1.1 christos 0, /* dst_mask */
84 1.1 christos FALSE),
85 1.1 christos
86 1.1 christos /* TLS general dynamic variable reference. */
87 1.1 christos HOWTO (R_68K_TLS_GD32, /* type */
88 1.1 christos 0, /* rightshift */
89 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
90 1.1 christos 32, /* bitsize */
91 1.1 christos FALSE, /* pc_relative */
92 1.1 christos 0, /* bitpos */
93 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
94 1.1 christos bfd_elf_generic_reloc, /* special_function */
95 1.1 christos "R_68K_TLS_GD32", /* name */
96 1.1 christos FALSE, /* partial_inplace */
97 1.1 christos 0, /* src_mask */
98 1.1 christos 0xffffffff, /* dst_mask */
99 1.1 christos FALSE), /* pcrel_offset */
100 1.1 christos
101 1.1 christos HOWTO (R_68K_TLS_GD16, /* type */
102 1.1 christos 0, /* rightshift */
103 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
104 1.1 christos 16, /* bitsize */
105 1.1 christos FALSE, /* pc_relative */
106 1.1 christos 0, /* bitpos */
107 1.1 christos complain_overflow_signed, /* complain_on_overflow */
108 1.1 christos bfd_elf_generic_reloc, /* special_function */
109 1.1 christos "R_68K_TLS_GD16", /* name */
110 1.1 christos FALSE, /* partial_inplace */
111 1.1 christos 0, /* src_mask */
112 1.1 christos 0x0000ffff, /* dst_mask */
113 1.1 christos FALSE), /* pcrel_offset */
114 1.1 christos
115 1.1 christos HOWTO (R_68K_TLS_GD8, /* type */
116 1.1 christos 0, /* rightshift */
117 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
118 1.1 christos 8, /* bitsize */
119 1.1 christos FALSE, /* pc_relative */
120 1.1 christos 0, /* bitpos */
121 1.1 christos complain_overflow_signed, /* complain_on_overflow */
122 1.1 christos bfd_elf_generic_reloc, /* special_function */
123 1.1 christos "R_68K_TLS_GD8", /* name */
124 1.1 christos FALSE, /* partial_inplace */
125 1.1 christos 0, /* src_mask */
126 1.1 christos 0x000000ff, /* dst_mask */
127 1.1 christos FALSE), /* pcrel_offset */
128 1.1 christos
129 1.1 christos /* TLS local dynamic variable reference. */
130 1.1 christos HOWTO (R_68K_TLS_LDM32, /* type */
131 1.1 christos 0, /* rightshift */
132 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
133 1.1 christos 32, /* bitsize */
134 1.1 christos FALSE, /* pc_relative */
135 1.1 christos 0, /* bitpos */
136 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
137 1.1 christos bfd_elf_generic_reloc, /* special_function */
138 1.1 christos "R_68K_TLS_LDM32", /* name */
139 1.1 christos FALSE, /* partial_inplace */
140 1.1 christos 0, /* src_mask */
141 1.1 christos 0xffffffff, /* dst_mask */
142 1.1 christos FALSE), /* pcrel_offset */
143 1.1 christos
144 1.1 christos HOWTO (R_68K_TLS_LDM16, /* type */
145 1.1 christos 0, /* rightshift */
146 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
147 1.1 christos 16, /* bitsize */
148 1.1 christos FALSE, /* pc_relative */
149 1.1 christos 0, /* bitpos */
150 1.1 christos complain_overflow_signed, /* complain_on_overflow */
151 1.1 christos bfd_elf_generic_reloc, /* special_function */
152 1.1 christos "R_68K_TLS_LDM16", /* name */
153 1.1 christos FALSE, /* partial_inplace */
154 1.1 christos 0, /* src_mask */
155 1.1 christos 0x0000ffff, /* dst_mask */
156 1.1 christos FALSE), /* pcrel_offset */
157 1.1 christos
158 1.1 christos HOWTO (R_68K_TLS_LDM8, /* type */
159 1.1 christos 0, /* rightshift */
160 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
161 1.1 christos 8, /* bitsize */
162 1.1 christos FALSE, /* pc_relative */
163 1.1 christos 0, /* bitpos */
164 1.1 christos complain_overflow_signed, /* complain_on_overflow */
165 1.1 christos bfd_elf_generic_reloc, /* special_function */
166 1.1 christos "R_68K_TLS_LDM8", /* name */
167 1.1 christos FALSE, /* partial_inplace */
168 1.1 christos 0, /* src_mask */
169 1.1 christos 0x000000ff, /* dst_mask */
170 1.1 christos FALSE), /* pcrel_offset */
171 1.1 christos
172 1.1 christos HOWTO (R_68K_TLS_LDO32, /* type */
173 1.1 christos 0, /* rightshift */
174 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
175 1.1 christos 32, /* bitsize */
176 1.1 christos FALSE, /* pc_relative */
177 1.1 christos 0, /* bitpos */
178 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
179 1.1 christos bfd_elf_generic_reloc, /* special_function */
180 1.1 christos "R_68K_TLS_LDO32", /* name */
181 1.1 christos FALSE, /* partial_inplace */
182 1.1 christos 0, /* src_mask */
183 1.1 christos 0xffffffff, /* dst_mask */
184 1.1 christos FALSE), /* pcrel_offset */
185 1.1 christos
186 1.1 christos HOWTO (R_68K_TLS_LDO16, /* type */
187 1.1 christos 0, /* rightshift */
188 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
189 1.1 christos 16, /* bitsize */
190 1.1 christos FALSE, /* pc_relative */
191 1.1 christos 0, /* bitpos */
192 1.1 christos complain_overflow_signed, /* complain_on_overflow */
193 1.1 christos bfd_elf_generic_reloc, /* special_function */
194 1.1 christos "R_68K_TLS_LDO16", /* name */
195 1.1 christos FALSE, /* partial_inplace */
196 1.1 christos 0, /* src_mask */
197 1.1 christos 0x0000ffff, /* dst_mask */
198 1.1 christos FALSE), /* pcrel_offset */
199 1.1 christos
200 1.1 christos HOWTO (R_68K_TLS_LDO8, /* type */
201 1.1 christos 0, /* rightshift */
202 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
203 1.1 christos 8, /* bitsize */
204 1.1 christos FALSE, /* pc_relative */
205 1.1 christos 0, /* bitpos */
206 1.1 christos complain_overflow_signed, /* complain_on_overflow */
207 1.1 christos bfd_elf_generic_reloc, /* special_function */
208 1.1 christos "R_68K_TLS_LDO8", /* name */
209 1.1 christos FALSE, /* partial_inplace */
210 1.1 christos 0, /* src_mask */
211 1.1 christos 0x000000ff, /* dst_mask */
212 1.1 christos FALSE), /* pcrel_offset */
213 1.1 christos
214 1.1 christos /* TLS initial execution variable reference. */
215 1.1 christos HOWTO (R_68K_TLS_IE32, /* type */
216 1.1 christos 0, /* rightshift */
217 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
218 1.1 christos 32, /* bitsize */
219 1.1 christos FALSE, /* pc_relative */
220 1.1 christos 0, /* bitpos */
221 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
222 1.1 christos bfd_elf_generic_reloc, /* special_function */
223 1.1 christos "R_68K_TLS_IE32", /* name */
224 1.1 christos FALSE, /* partial_inplace */
225 1.1 christos 0, /* src_mask */
226 1.1 christos 0xffffffff, /* dst_mask */
227 1.1 christos FALSE), /* pcrel_offset */
228 1.1 christos
229 1.1 christos HOWTO (R_68K_TLS_IE16, /* type */
230 1.1 christos 0, /* rightshift */
231 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
232 1.1 christos 16, /* bitsize */
233 1.1 christos FALSE, /* pc_relative */
234 1.1 christos 0, /* bitpos */
235 1.1 christos complain_overflow_signed, /* complain_on_overflow */
236 1.1 christos bfd_elf_generic_reloc, /* special_function */
237 1.1 christos "R_68K_TLS_IE16", /* name */
238 1.1 christos FALSE, /* partial_inplace */
239 1.1 christos 0, /* src_mask */
240 1.1 christos 0x0000ffff, /* dst_mask */
241 1.1 christos FALSE), /* pcrel_offset */
242 1.1 christos
243 1.1 christos HOWTO (R_68K_TLS_IE8, /* type */
244 1.1 christos 0, /* rightshift */
245 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
246 1.1 christos 8, /* bitsize */
247 1.1 christos FALSE, /* pc_relative */
248 1.1 christos 0, /* bitpos */
249 1.1 christos complain_overflow_signed, /* complain_on_overflow */
250 1.1 christos bfd_elf_generic_reloc, /* special_function */
251 1.1 christos "R_68K_TLS_IE8", /* name */
252 1.1 christos FALSE, /* partial_inplace */
253 1.1 christos 0, /* src_mask */
254 1.1 christos 0x000000ff, /* dst_mask */
255 1.1 christos FALSE), /* pcrel_offset */
256 1.1 christos
257 1.1 christos /* TLS local execution variable reference. */
258 1.1 christos HOWTO (R_68K_TLS_LE32, /* type */
259 1.1 christos 0, /* rightshift */
260 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
261 1.1 christos 32, /* bitsize */
262 1.1 christos FALSE, /* pc_relative */
263 1.1 christos 0, /* bitpos */
264 1.1 christos complain_overflow_bitfield, /* complain_on_overflow */
265 1.1 christos bfd_elf_generic_reloc, /* special_function */
266 1.1 christos "R_68K_TLS_LE32", /* name */
267 1.1 christos FALSE, /* partial_inplace */
268 1.1 christos 0, /* src_mask */
269 1.1 christos 0xffffffff, /* dst_mask */
270 1.1 christos FALSE), /* pcrel_offset */
271 1.1 christos
272 1.1 christos HOWTO (R_68K_TLS_LE16, /* type */
273 1.1 christos 0, /* rightshift */
274 1.1 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
275 1.1 christos 16, /* bitsize */
276 1.1 christos FALSE, /* pc_relative */
277 1.1 christos 0, /* bitpos */
278 1.1 christos complain_overflow_signed, /* complain_on_overflow */
279 1.1 christos bfd_elf_generic_reloc, /* special_function */
280 1.1 christos "R_68K_TLS_LE16", /* name */
281 1.1 christos FALSE, /* partial_inplace */
282 1.1 christos 0, /* src_mask */
283 1.1 christos 0x0000ffff, /* dst_mask */
284 1.1 christos FALSE), /* pcrel_offset */
285 1.1 christos
286 1.1 christos HOWTO (R_68K_TLS_LE8, /* type */
287 1.1 christos 0, /* rightshift */
288 1.1 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
289 1.1 christos 8, /* bitsize */
290 1.1 christos FALSE, /* pc_relative */
291 1.1 christos 0, /* bitpos */
292 1.1 christos complain_overflow_signed, /* complain_on_overflow */
293 1.1 christos bfd_elf_generic_reloc, /* special_function */
294 1.1 christos "R_68K_TLS_LE8", /* name */
295 1.1 christos FALSE, /* partial_inplace */
296 1.1 christos 0, /* src_mask */
297 1.1 christos 0x000000ff, /* dst_mask */
298 1.1 christos FALSE), /* pcrel_offset */
299 1.1 christos
300 1.1 christos /* TLS GD/LD dynamic relocations. */
301 1.1 christos HOWTO (R_68K_TLS_DTPMOD32, /* type */
302 1.1 christos 0, /* rightshift */
303 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
304 1.1 christos 32, /* bitsize */
305 1.1 christos FALSE, /* pc_relative */
306 1.1 christos 0, /* bitpos */
307 1.1 christos complain_overflow_dont, /* complain_on_overflow */
308 1.1 christos bfd_elf_generic_reloc, /* special_function */
309 1.1 christos "R_68K_TLS_DTPMOD32", /* name */
310 1.1 christos FALSE, /* partial_inplace */
311 1.1 christos 0, /* src_mask */
312 1.1 christos 0xffffffff, /* dst_mask */
313 1.1 christos FALSE), /* pcrel_offset */
314 1.1 christos
315 1.1 christos HOWTO (R_68K_TLS_DTPREL32, /* type */
316 1.1 christos 0, /* rightshift */
317 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
318 1.1 christos 32, /* bitsize */
319 1.1 christos FALSE, /* pc_relative */
320 1.1 christos 0, /* bitpos */
321 1.1 christos complain_overflow_dont, /* complain_on_overflow */
322 1.1 christos bfd_elf_generic_reloc, /* special_function */
323 1.1 christos "R_68K_TLS_DTPREL32", /* name */
324 1.1 christos FALSE, /* partial_inplace */
325 1.1 christos 0, /* src_mask */
326 1.1 christos 0xffffffff, /* dst_mask */
327 1.1 christos FALSE), /* pcrel_offset */
328 1.1 christos
329 1.1 christos HOWTO (R_68K_TLS_TPREL32, /* type */
330 1.1 christos 0, /* rightshift */
331 1.1 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
332 1.1 christos 32, /* bitsize */
333 1.1 christos FALSE, /* pc_relative */
334 1.1 christos 0, /* bitpos */
335 1.1 christos complain_overflow_dont, /* complain_on_overflow */
336 1.1 christos bfd_elf_generic_reloc, /* special_function */
337 1.1 christos "R_68K_TLS_TPREL32", /* name */
338 1.1 christos FALSE, /* partial_inplace */
339 1.1 christos 0, /* src_mask */
340 1.1 christos 0xffffffff, /* dst_mask */
341 1.1 christos FALSE), /* pcrel_offset */
342 1.1 christos };
343 1.1 christos
344 1.1.1.8 christos static bfd_boolean
345 1.1 christos rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
346 1.1 christos {
347 1.1 christos unsigned int indx = ELF32_R_TYPE (dst->r_info);
348 1.1 christos
349 1.1 christos if (indx >= (unsigned int) R_68K_max)
350 1.1 christos {
351 1.1.1.7 christos /* xgettext:c-format */
352 1.1.1.8 christos _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
353 1.1.1.8 christos abfd, indx);
354 1.1.1.8 christos bfd_set_error (bfd_error_bad_value);
355 1.1.1.8 christos return FALSE;
356 1.1 christos }
357 1.1 christos cache_ptr->howto = &howto_table[indx];
358 1.1.1.8 christos return TRUE;
359 1.1 christos }
360 1.1 christos
361 1.1 christos #define elf_info_to_howto rtype_to_howto
362 1.1 christos
363 1.1 christos static const struct
364 1.1 christos {
365 1.1 christos bfd_reloc_code_real_type bfd_val;
366 1.1 christos int elf_val;
367 1.1 christos }
368 1.1 christos reloc_map[] =
369 1.1 christos {
370 1.1 christos { BFD_RELOC_NONE, R_68K_NONE },
371 1.1 christos { BFD_RELOC_32, R_68K_32 },
372 1.1 christos { BFD_RELOC_16, R_68K_16 },
373 1.1 christos { BFD_RELOC_8, R_68K_8 },
374 1.1 christos { BFD_RELOC_32_PCREL, R_68K_PC32 },
375 1.1 christos { BFD_RELOC_16_PCREL, R_68K_PC16 },
376 1.1 christos { BFD_RELOC_8_PCREL, R_68K_PC8 },
377 1.1 christos { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
378 1.1 christos { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
379 1.1 christos { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
380 1.1 christos { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
381 1.1 christos { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
382 1.1 christos { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
383 1.1 christos { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
384 1.1 christos { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
385 1.1 christos { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
386 1.1 christos { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
387 1.1 christos { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
388 1.1 christos { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
389 1.1 christos { BFD_RELOC_NONE, R_68K_COPY },
390 1.1 christos { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
391 1.1 christos { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
392 1.1 christos { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
393 1.1 christos { BFD_RELOC_CTOR, R_68K_32 },
394 1.1 christos { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT },
395 1.1 christos { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY },
396 1.1 christos { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 },
397 1.1 christos { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 },
398 1.1 christos { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 },
399 1.1 christos { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 },
400 1.1 christos { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 },
401 1.1 christos { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 },
402 1.1 christos { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 },
403 1.1 christos { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 },
404 1.1 christos { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 },
405 1.1 christos { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 },
406 1.1 christos { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 },
407 1.1 christos { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 },
408 1.1 christos { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 },
409 1.1 christos { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 },
410 1.1 christos { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 },
411 1.1 christos };
412 1.1 christos
413 1.1 christos static reloc_howto_type *
414 1.1.1.2 christos reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
415 1.1.1.2 christos bfd_reloc_code_real_type code)
416 1.1 christos {
417 1.1 christos unsigned int i;
418 1.1 christos for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
419 1.1 christos {
420 1.1 christos if (reloc_map[i].bfd_val == code)
421 1.1 christos return &howto_table[reloc_map[i].elf_val];
422 1.1 christos }
423 1.1 christos return 0;
424 1.1 christos }
425 1.1 christos
426 1.1 christos static reloc_howto_type *
427 1.1 christos reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
428 1.1 christos {
429 1.1 christos unsigned int i;
430 1.1 christos
431 1.1 christos for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
432 1.1 christos if (howto_table[i].name != NULL
433 1.1 christos && strcasecmp (howto_table[i].name, r_name) == 0)
434 1.1 christos return &howto_table[i];
435 1.1 christos
436 1.1 christos return NULL;
437 1.1 christos }
438 1.1 christos
439 1.1 christos #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
440 1.1 christos #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
441 1.1 christos #define ELF_ARCH bfd_arch_m68k
442 1.1 christos #define ELF_TARGET_ID M68K_ELF_DATA
443 1.1 christos
444 1.1 christos /* Functions for the m68k ELF linker. */
446 1.1 christos
447 1.1 christos /* The name of the dynamic interpreter. This is put in the .interp
448 1.1 christos section. */
449 1.1 christos
450 1.1 christos #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
451 1.1 christos
452 1.1 christos /* Describes one of the various PLT styles. */
453 1.1 christos
454 1.1 christos struct elf_m68k_plt_info
455 1.1 christos {
456 1.1 christos /* The size of each PLT entry. */
457 1.1 christos bfd_vma size;
458 1.1 christos
459 1.1 christos /* The template for the first PLT entry. */
460 1.1 christos const bfd_byte *plt0_entry;
461 1.1 christos
462 1.1 christos /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
463 1.1 christos The comments by each member indicate the value that the relocation
464 1.1 christos is against. */
465 1.1 christos struct {
466 1.1 christos unsigned int got4; /* .got + 4 */
467 1.1 christos unsigned int got8; /* .got + 8 */
468 1.1 christos } plt0_relocs;
469 1.1 christos
470 1.1 christos /* The template for a symbol's PLT entry. */
471 1.1 christos const bfd_byte *symbol_entry;
472 1.1 christos
473 1.1 christos /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
474 1.1 christos The comments by each member indicate the value that the relocation
475 1.1 christos is against. */
476 1.1 christos struct {
477 1.1 christos unsigned int got; /* the symbol's .got.plt entry */
478 1.1 christos unsigned int plt; /* .plt */
479 1.1 christos } symbol_relocs;
480 1.1 christos
481 1.1 christos /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
482 1.1 christos The stub starts with "move.l #relocoffset,%d0". */
483 1.1 christos bfd_vma symbol_resolve_entry;
484 1.1 christos };
485 1.1 christos
486 1.1 christos /* The size in bytes of an entry in the procedure linkage table. */
487 1.1 christos
488 1.1 christos #define PLT_ENTRY_SIZE 20
489 1.1 christos
490 1.1 christos /* The first entry in a procedure linkage table looks like this. See
491 1.1 christos the SVR4 ABI m68k supplement to see how this works. */
492 1.1 christos
493 1.1 christos static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
494 1.1 christos {
495 1.1 christos 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
496 1.1 christos 0, 0, 0, 2, /* + (.got + 4) - . */
497 1.1 christos 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
498 1.1 christos 0, 0, 0, 2, /* + (.got + 8) - . */
499 1.1 christos 0, 0, 0, 0 /* pad out to 20 bytes. */
500 1.1 christos };
501 1.1 christos
502 1.1 christos /* Subsequent entries in a procedure linkage table look like this. */
503 1.1 christos
504 1.1 christos static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
505 1.1 christos {
506 1.1 christos 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
507 1.1 christos 0, 0, 0, 2, /* + (.got.plt entry) - . */
508 1.1 christos 0x2f, 0x3c, /* move.l #offset,-(%sp) */
509 1.1 christos 0, 0, 0, 0, /* + reloc index */
510 1.1 christos 0x60, 0xff, /* bra.l .plt */
511 1.1 christos 0, 0, 0, 0 /* + .plt - . */
512 1.1 christos };
513 1.1.1.7 christos
514 1.1.1.7 christos static const struct elf_m68k_plt_info elf_m68k_plt_info =
515 1.1 christos {
516 1.1 christos PLT_ENTRY_SIZE,
517 1.1 christos elf_m68k_plt0_entry, { 4, 12 },
518 1.1 christos elf_m68k_plt_entry, { 4, 16 }, 8
519 1.1 christos };
520 1.1 christos
521 1.1 christos #define ISAB_PLT_ENTRY_SIZE 24
522 1.1 christos
523 1.1 christos static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] =
524 1.1.1.8 christos {
525 1.1.1.8 christos 0x20, 0x3c, /* move.l #offset,%d0 */
526 1.1 christos 0, 0, 0, 0, /* + (.got + 4) - . */
527 1.1.1.8 christos 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
528 1.1.1.8 christos 0x20, 0x3c, /* move.l #offset,%d0 */
529 1.1 christos 0, 0, 0, 0, /* + (.got + 8) - . */
530 1.1.1.8 christos 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
531 1.1 christos 0x4e, 0xd0, /* jmp (%a0) */
532 1.1 christos 0x4e, 0x71 /* nop */
533 1.1 christos };
534 1.1 christos
535 1.1 christos /* Subsequent entries in a procedure linkage table look like this. */
536 1.1 christos
537 1.1 christos static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] =
538 1.1.1.8 christos {
539 1.1.1.8 christos 0x20, 0x3c, /* move.l #offset,%d0 */
540 1.1 christos 0, 0, 0, 0, /* + (.got.plt entry) - . */
541 1.1.1.8 christos 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
542 1.1.1.8 christos 0x4e, 0xd0, /* jmp (%a0) */
543 1.1.1.8 christos 0x2f, 0x3c, /* move.l #offset,-(%sp) */
544 1.1.1.8 christos 0, 0, 0, 0, /* + reloc index */
545 1.1.1.8 christos 0x60, 0xff, /* bra.l .plt */
546 1.1 christos 0, 0, 0, 0 /* + .plt - . */
547 1.1 christos };
548 1.1.1.7 christos
549 1.1.1.7 christos static const struct elf_m68k_plt_info elf_isab_plt_info =
550 1.1 christos {
551 1.1 christos ISAB_PLT_ENTRY_SIZE,
552 1.1 christos elf_isab_plt0_entry, { 2, 12 },
553 1.1 christos elf_isab_plt_entry, { 2, 20 }, 12
554 1.1 christos };
555 1.1 christos
556 1.1 christos #define ISAC_PLT_ENTRY_SIZE 24
557 1.1 christos
558 1.1 christos static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] =
559 1.1 christos {
560 1.1 christos 0x20, 0x3c, /* move.l #offset,%d0 */
561 1.1 christos 0, 0, 0, 0, /* replaced with .got + 4 - . */
562 1.1 christos 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
563 1.1 christos 0x20, 0x3c, /* move.l #offset,%d0 */
564 1.1 christos 0, 0, 0, 0, /* replaced with .got + 8 - . */
565 1.1 christos 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
566 1.1 christos 0x4e, 0xd0, /* jmp (%a0) */
567 1.1 christos 0x4e, 0x71 /* nop */
568 1.1 christos };
569 1.1 christos
570 1.1 christos /* Subsequent entries in a procedure linkage table look like this. */
571 1.1 christos
572 1.1 christos static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] =
573 1.1 christos {
574 1.1 christos 0x20, 0x3c, /* move.l #offset,%d0 */
575 1.1 christos 0, 0, 0, 0, /* replaced with (.got entry) - . */
576 1.1 christos 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
577 1.1 christos 0x4e, 0xd0, /* jmp (%a0) */
578 1.1 christos 0x2f, 0x3c, /* move.l #offset,-(%sp) */
579 1.1 christos 0, 0, 0, 0, /* replaced with offset into relocation table */
580 1.1.1.8 christos 0x61, 0xff, /* bsr.l .plt */
581 1.1 christos 0, 0, 0, 0 /* replaced with .plt - . */
582 1.1 christos };
583 1.1.1.7 christos
584 1.1.1.7 christos static const struct elf_m68k_plt_info elf_isac_plt_info =
585 1.1 christos {
586 1.1 christos ISAC_PLT_ENTRY_SIZE,
587 1.1 christos elf_isac_plt0_entry, { 2, 12},
588 1.1 christos elf_isac_plt_entry, { 2, 20 }, 12
589 1.1 christos };
590 1.1 christos
591 1.1 christos #define CPU32_PLT_ENTRY_SIZE 24
592 1.1 christos /* Procedure linkage table entries for the cpu32 */
593 1.1 christos static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] =
594 1.1 christos {
595 1.1.1.8 christos 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
596 1.1 christos 0, 0, 0, 2, /* + (.got + 4) - . */
597 1.1.1.8 christos 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
598 1.1.1.8 christos 0, 0, 0, 2, /* + (.got + 8) - . */
599 1.1.1.8 christos 0x4e, 0xd1, /* jmp %a1@ */
600 1.1 christos 0, 0, 0, 0, /* pad out to 24 bytes. */
601 1.1 christos 0, 0
602 1.1 christos };
603 1.1 christos
604 1.1 christos static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] =
605 1.1 christos {
606 1.1.1.8 christos 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
607 1.1.1.8 christos 0, 0, 0, 2, /* + (.got.plt entry) - . */
608 1.1.1.8 christos 0x4e, 0xd1, /* jmp %a1@ */
609 1.1.1.8 christos 0x2f, 0x3c, /* move.l #offset,-(%sp) */
610 1.1.1.8 christos 0, 0, 0, 0, /* + reloc index */
611 1.1.1.8 christos 0x60, 0xff, /* bra.l .plt */
612 1.1 christos 0, 0, 0, 0, /* + .plt - . */
613 1.1 christos 0, 0
614 1.1 christos };
615 1.1.1.7 christos
616 1.1.1.7 christos static const struct elf_m68k_plt_info elf_cpu32_plt_info =
617 1.1 christos {
618 1.1 christos CPU32_PLT_ENTRY_SIZE,
619 1.1 christos elf_cpu32_plt0_entry, { 4, 12 },
620 1.1 christos elf_cpu32_plt_entry, { 4, 18 }, 10
621 1.1 christos };
622 1.1 christos
623 1.1 christos /* The m68k linker needs to keep track of the number of relocs that it
624 1.1 christos decides to copy in check_relocs for each symbol. This is so that it
625 1.1 christos can discard PC relative relocs if it doesn't need them when linking
626 1.1 christos with -Bsymbolic. We store the information in a field extending the
627 1.1 christos regular ELF linker hash table. */
628 1.1 christos
629 1.1 christos /* This structure keeps track of the number of PC relative relocs we have
630 1.1 christos copied for a given symbol. */
631 1.1 christos
632 1.1 christos struct elf_m68k_pcrel_relocs_copied
633 1.1 christos {
634 1.1 christos /* Next section. */
635 1.1 christos struct elf_m68k_pcrel_relocs_copied *next;
636 1.1 christos /* A section in dynobj. */
637 1.1 christos asection *section;
638 1.1 christos /* Number of relocs copied in this section. */
639 1.1 christos bfd_size_type count;
640 1.1 christos };
641 1.1 christos
642 1.1 christos /* Forward declaration. */
643 1.1 christos struct elf_m68k_got_entry;
644 1.1 christos
645 1.1 christos /* m68k ELF linker hash entry. */
646 1.1 christos
647 1.1 christos struct elf_m68k_link_hash_entry
648 1.1 christos {
649 1.1 christos struct elf_link_hash_entry root;
650 1.1 christos
651 1.1 christos /* Number of PC relative relocs copied for this symbol. */
652 1.1 christos struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
653 1.1 christos
654 1.1 christos /* Key to got_entries. */
655 1.1 christos unsigned long got_entry_key;
656 1.1 christos
657 1.1 christos /* List of GOT entries for this symbol. This list is build during
658 1.1 christos offset finalization and is used within elf_m68k_finish_dynamic_symbol
659 1.1 christos to traverse all GOT entries for a particular symbol.
660 1.1 christos
661 1.1 christos ??? We could've used root.got.glist field instead, but having
662 1.1 christos a separate field is cleaner. */
663 1.1 christos struct elf_m68k_got_entry *glist;
664 1.1 christos };
665 1.1 christos
666 1.1 christos #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
667 1.1 christos
668 1.1 christos /* Key part of GOT entry in hashtable. */
669 1.1 christos struct elf_m68k_got_entry_key
670 1.1 christos {
671 1.1 christos /* BFD in which this symbol was defined. NULL for global symbols. */
672 1.1 christos const bfd *bfd;
673 1.1 christos
674 1.1 christos /* Symbol index. Either local symbol index or h->got_entry_key. */
675 1.1 christos unsigned long symndx;
676 1.1 christos
677 1.1 christos /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32},
678 1.1 christos R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}.
679 1.1 christos
680 1.1 christos From perspective of hashtable key, only elf_m68k_got_reloc_type (type)
681 1.1 christos matters. That is, we distinguish between, say, R_68K_GOT16O
682 1.1 christos and R_68K_GOT32O when allocating offsets, but they are considered to be
683 1.1 christos the same when searching got->entries. */
684 1.1 christos enum elf_m68k_reloc_type type;
685 1.1 christos };
686 1.1 christos
687 1.1 christos /* Size of the GOT offset suitable for relocation. */
688 1.1 christos enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST };
689 1.1 christos
690 1.1 christos /* Entry of the GOT. */
691 1.1 christos struct elf_m68k_got_entry
692 1.1 christos {
693 1.1 christos /* GOT entries are put into a got->entries hashtable. This is the key. */
694 1.1 christos struct elf_m68k_got_entry_key key_;
695 1.1 christos
696 1.1 christos /* GOT entry data. We need s1 before offset finalization and s2 after. */
697 1.1 christos union
698 1.1 christos {
699 1.1 christos struct
700 1.1.1.8 christos {
701 1.1 christos /* Number of times this entry is referenced. */
702 1.1 christos bfd_vma refcount;
703 1.1 christos } s1;
704 1.1 christos
705 1.1 christos struct
706 1.1 christos {
707 1.1.1.8 christos /* Offset from the start of .got section. To calculate offset relative
708 1.1 christos to GOT pointer one should subtract got->offset from this value. */
709 1.1 christos bfd_vma offset;
710 1.1 christos
711 1.1 christos /* Pointer to the next GOT entry for this global symbol.
712 1.1 christos Symbols have at most one entry in one GOT, but might
713 1.1 christos have entries in more than one GOT.
714 1.1 christos Root of this list is h->glist.
715 1.1 christos NULL for local symbols. */
716 1.1 christos struct elf_m68k_got_entry *next;
717 1.1 christos } s2;
718 1.1 christos } u;
719 1.1 christos };
720 1.1 christos
721 1.1 christos /* Return representative type for relocation R_TYPE.
722 1.1 christos This is used to avoid enumerating many relocations in comparisons,
723 1.1 christos switches etc. */
724 1.1 christos
725 1.1 christos static enum elf_m68k_reloc_type
726 1.1 christos elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type)
727 1.1 christos {
728 1.1 christos switch (r_type)
729 1.1 christos {
730 1.1 christos /* In most cases R_68K_GOTx relocations require the very same
731 1.1 christos handling as R_68K_GOT32O relocation. In cases when we need
732 1.1 christos to distinguish between the two, we use explicitly compare against
733 1.1 christos r_type. */
734 1.1 christos case R_68K_GOT32:
735 1.1 christos case R_68K_GOT16:
736 1.1 christos case R_68K_GOT8:
737 1.1 christos case R_68K_GOT32O:
738 1.1 christos case R_68K_GOT16O:
739 1.1 christos case R_68K_GOT8O:
740 1.1 christos return R_68K_GOT32O;
741 1.1 christos
742 1.1 christos case R_68K_TLS_GD32:
743 1.1 christos case R_68K_TLS_GD16:
744 1.1 christos case R_68K_TLS_GD8:
745 1.1 christos return R_68K_TLS_GD32;
746 1.1 christos
747 1.1 christos case R_68K_TLS_LDM32:
748 1.1 christos case R_68K_TLS_LDM16:
749 1.1 christos case R_68K_TLS_LDM8:
750 1.1 christos return R_68K_TLS_LDM32;
751 1.1 christos
752 1.1 christos case R_68K_TLS_IE32:
753 1.1 christos case R_68K_TLS_IE16:
754 1.1 christos case R_68K_TLS_IE8:
755 1.1 christos return R_68K_TLS_IE32;
756 1.1 christos
757 1.1 christos default:
758 1.1 christos BFD_ASSERT (FALSE);
759 1.1 christos return 0;
760 1.1 christos }
761 1.1 christos }
762 1.1 christos
763 1.1 christos /* Return size of the GOT entry offset for relocation R_TYPE. */
764 1.1 christos
765 1.1 christos static enum elf_m68k_got_offset_size
766 1.1 christos elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type)
767 1.1 christos {
768 1.1 christos switch (r_type)
769 1.1 christos {
770 1.1 christos case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8:
771 1.1 christos case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32:
772 1.1 christos case R_68K_TLS_IE32:
773 1.1 christos return R_32;
774 1.1 christos
775 1.1 christos case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16:
776 1.1 christos case R_68K_TLS_IE16:
777 1.1 christos return R_16;
778 1.1 christos
779 1.1 christos case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8:
780 1.1 christos case R_68K_TLS_IE8:
781 1.1 christos return R_8;
782 1.1 christos
783 1.1 christos default:
784 1.1 christos BFD_ASSERT (FALSE);
785 1.1 christos return 0;
786 1.1 christos }
787 1.1 christos }
788 1.1 christos
789 1.1 christos /* Return number of GOT entries we need to allocate in GOT for
790 1.1 christos relocation R_TYPE. */
791 1.1 christos
792 1.1 christos static bfd_vma
793 1.1 christos elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type)
794 1.1 christos {
795 1.1 christos switch (elf_m68k_reloc_got_type (r_type))
796 1.1 christos {
797 1.1 christos case R_68K_GOT32O:
798 1.1 christos case R_68K_TLS_IE32:
799 1.1 christos return 1;
800 1.1 christos
801 1.1 christos case R_68K_TLS_GD32:
802 1.1 christos case R_68K_TLS_LDM32:
803 1.1 christos return 2;
804 1.1 christos
805 1.1 christos default:
806 1.1 christos BFD_ASSERT (FALSE);
807 1.1 christos return 0;
808 1.1 christos }
809 1.1 christos }
810 1.1 christos
811 1.1 christos /* Return TRUE if relocation R_TYPE is a TLS one. */
812 1.1 christos
813 1.1 christos static bfd_boolean
814 1.1 christos elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type)
815 1.1 christos {
816 1.1 christos switch (r_type)
817 1.1 christos {
818 1.1 christos case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8:
819 1.1 christos case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8:
820 1.1 christos case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8:
821 1.1 christos case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8:
822 1.1 christos case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8:
823 1.1 christos case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32:
824 1.1 christos return TRUE;
825 1.1 christos
826 1.1 christos default:
827 1.1 christos return FALSE;
828 1.1 christos }
829 1.1 christos }
830 1.1 christos
831 1.1 christos /* Data structure representing a single GOT. */
832 1.1 christos struct elf_m68k_got
833 1.1 christos {
834 1.1 christos /* Hashtable of 'struct elf_m68k_got_entry's.
835 1.1 christos Starting size of this table is the maximum number of
836 1.1 christos R_68K_GOT8O entries. */
837 1.1 christos htab_t entries;
838 1.1 christos
839 1.1 christos /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require
840 1.1 christos several GOT slots.
841 1.1 christos
842 1.1 christos n_slots[R_8] is the count of R_8 slots in this GOT.
843 1.1 christos n_slots[R_16] is the cumulative count of R_8 and R_16 slots
844 1.1 christos in this GOT.
845 1.1 christos n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots
846 1.1 christos in this GOT. This is the total number of slots. */
847 1.1 christos bfd_vma n_slots[R_LAST];
848 1.1 christos
849 1.1 christos /* Number of local (entry->key_.h == NULL) slots in this GOT.
850 1.1 christos This is only used to properly calculate size of .rela.got section;
851 1.1 christos see elf_m68k_partition_multi_got. */
852 1.1 christos bfd_vma local_n_slots;
853 1.1 christos
854 1.1 christos /* Offset of this GOT relative to beginning of .got section. */
855 1.1 christos bfd_vma offset;
856 1.1 christos };
857 1.1 christos
858 1.1 christos /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
859 1.1 christos struct elf_m68k_bfd2got_entry
860 1.1 christos {
861 1.1 christos /* BFD. */
862 1.1 christos const bfd *bfd;
863 1.1 christos
864 1.1 christos /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
865 1.1 christos GOT structure. After partitioning several BFD's might [and often do]
866 1.1 christos share a single GOT. */
867 1.1 christos struct elf_m68k_got *got;
868 1.1 christos };
869 1.1 christos
870 1.1 christos /* The main data structure holding all the pieces. */
871 1.1 christos struct elf_m68k_multi_got
872 1.1 christos {
873 1.1 christos /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
874 1.1 christos here, then it doesn't need a GOT (this includes the case of a BFD
875 1.1 christos having an empty GOT).
876 1.1 christos
877 1.1 christos ??? This hashtable can be replaced by an array indexed by bfd->id. */
878 1.1 christos htab_t bfd2got;
879 1.1 christos
880 1.1 christos /* Next symndx to assign a global symbol.
881 1.1 christos h->got_entry_key is initialized from this counter. */
882 1.1 christos unsigned long global_symndx;
883 1.1 christos };
884 1.1 christos
885 1.1 christos /* m68k ELF linker hash table. */
886 1.1 christos
887 1.1 christos struct elf_m68k_link_hash_table
888 1.1 christos {
889 1.1 christos struct elf_link_hash_table root;
890 1.1 christos
891 1.1 christos /* Small local sym cache. */
892 1.1 christos struct sym_cache sym_cache;
893 1.1 christos
894 1.1 christos /* The PLT format used by this link, or NULL if the format has not
895 1.1 christos yet been chosen. */
896 1.1 christos const struct elf_m68k_plt_info *plt_info;
897 1.1 christos
898 1.1 christos /* True, if GP is loaded within each function which uses it.
899 1.1 christos Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
900 1.1 christos bfd_boolean local_gp_p;
901 1.1 christos
902 1.1 christos /* Switch controlling use of negative offsets to double the size of GOTs. */
903 1.1 christos bfd_boolean use_neg_got_offsets_p;
904 1.1 christos
905 1.1 christos /* Switch controlling generation of multiple GOTs. */
906 1.1 christos bfd_boolean allow_multigot_p;
907 1.1 christos
908 1.1 christos /* Multi-GOT data structure. */
909 1.1 christos struct elf_m68k_multi_got multi_got_;
910 1.1 christos };
911 1.1 christos
912 1.1 christos /* Get the m68k ELF linker hash table from a link_info structure. */
913 1.1 christos
914 1.1 christos #define elf_m68k_hash_table(p) \
915 1.1 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
916 1.1 christos == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL)
917 1.1 christos
918 1.1 christos /* Shortcut to multi-GOT data. */
919 1.1 christos #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
920 1.1 christos
921 1.1 christos /* Create an entry in an m68k ELF linker hash table. */
922 1.1 christos
923 1.1 christos static struct bfd_hash_entry *
924 1.1 christos elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry,
925 1.1 christos struct bfd_hash_table *table,
926 1.1 christos const char *string)
927 1.1 christos {
928 1.1 christos struct bfd_hash_entry *ret = entry;
929 1.1 christos
930 1.1 christos /* Allocate the structure if it has not already been allocated by a
931 1.1 christos subclass. */
932 1.1 christos if (ret == NULL)
933 1.1 christos ret = bfd_hash_allocate (table,
934 1.1 christos sizeof (struct elf_m68k_link_hash_entry));
935 1.1 christos if (ret == NULL)
936 1.1 christos return ret;
937 1.1 christos
938 1.1 christos /* Call the allocation method of the superclass. */
939 1.1 christos ret = _bfd_elf_link_hash_newfunc (ret, table, string);
940 1.1 christos if (ret != NULL)
941 1.1 christos {
942 1.1 christos elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
943 1.1 christos elf_m68k_hash_entry (ret)->got_entry_key = 0;
944 1.1 christos elf_m68k_hash_entry (ret)->glist = NULL;
945 1.1 christos }
946 1.1 christos
947 1.1 christos return ret;
948 1.1 christos }
949 1.1.1.4 christos
950 1.1.1.4 christos /* Destroy an m68k ELF linker hash table. */
951 1.1.1.4 christos
952 1.1.1.4 christos static void
953 1.1.1.4 christos elf_m68k_link_hash_table_free (bfd *obfd)
954 1.1.1.4 christos {
955 1.1.1.4 christos struct elf_m68k_link_hash_table *htab;
956 1.1.1.4 christos
957 1.1.1.4 christos htab = (struct elf_m68k_link_hash_table *) obfd->link.hash;
958 1.1.1.4 christos
959 1.1.1.4 christos if (htab->multi_got_.bfd2got != NULL)
960 1.1.1.4 christos {
961 1.1.1.4 christos htab_delete (htab->multi_got_.bfd2got);
962 1.1.1.4 christos htab->multi_got_.bfd2got = NULL;
963 1.1.1.4 christos }
964 1.1.1.4 christos _bfd_elf_link_hash_table_free (obfd);
965 1.1.1.4 christos }
966 1.1 christos
967 1.1 christos /* Create an m68k ELF linker hash table. */
968 1.1 christos
969 1.1 christos static struct bfd_link_hash_table *
970 1.1 christos elf_m68k_link_hash_table_create (bfd *abfd)
971 1.1 christos {
972 1.1 christos struct elf_m68k_link_hash_table *ret;
973 1.1 christos bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
974 1.1.1.2 christos
975 1.1 christos ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt);
976 1.1 christos if (ret == (struct elf_m68k_link_hash_table *) NULL)
977 1.1 christos return NULL;
978 1.1 christos
979 1.1 christos if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
980 1.1 christos elf_m68k_link_hash_newfunc,
981 1.1 christos sizeof (struct elf_m68k_link_hash_entry),
982 1.1 christos M68K_ELF_DATA))
983 1.1 christos {
984 1.1 christos free (ret);
985 1.1 christos return NULL;
986 1.1.1.4 christos }
987 1.1 christos ret->root.root.hash_table_free = elf_m68k_link_hash_table_free;
988 1.1 christos
989 1.1 christos ret->multi_got_.global_symndx = 1;
990 1.1 christos
991 1.1 christos return &ret->root.root;
992 1.1 christos }
993 1.1 christos
994 1.1 christos /* Set the right machine number. */
995 1.1 christos
996 1.1 christos static bfd_boolean
997 1.1 christos elf32_m68k_object_p (bfd *abfd)
998 1.1 christos {
999 1.1 christos unsigned int mach = 0;
1000 1.1 christos unsigned features = 0;
1001 1.1 christos flagword eflags = elf_elfheader (abfd)->e_flags;
1002 1.1 christos
1003 1.1 christos if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1004 1.1 christos features |= m68000;
1005 1.1 christos else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1006 1.1 christos features |= cpu32;
1007 1.1 christos else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1008 1.1 christos features |= fido_a;
1009 1.1 christos else
1010 1.1 christos {
1011 1.1 christos switch (eflags & EF_M68K_CF_ISA_MASK)
1012 1.1 christos {
1013 1.1 christos case EF_M68K_CF_ISA_A_NODIV:
1014 1.1 christos features |= mcfisa_a;
1015 1.1 christos break;
1016 1.1 christos case EF_M68K_CF_ISA_A:
1017 1.1 christos features |= mcfisa_a|mcfhwdiv;
1018 1.1 christos break;
1019 1.1 christos case EF_M68K_CF_ISA_A_PLUS:
1020 1.1 christos features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
1021 1.1 christos break;
1022 1.1 christos case EF_M68K_CF_ISA_B_NOUSP:
1023 1.1 christos features |= mcfisa_a|mcfisa_b|mcfhwdiv;
1024 1.1 christos break;
1025 1.1 christos case EF_M68K_CF_ISA_B:
1026 1.1 christos features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
1027 1.1 christos break;
1028 1.1 christos case EF_M68K_CF_ISA_C:
1029 1.1 christos features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
1030 1.1 christos break;
1031 1.1 christos case EF_M68K_CF_ISA_C_NODIV:
1032 1.1 christos features |= mcfisa_a|mcfisa_c|mcfusp;
1033 1.1 christos break;
1034 1.1 christos }
1035 1.1 christos switch (eflags & EF_M68K_CF_MAC_MASK)
1036 1.1 christos {
1037 1.1 christos case EF_M68K_CF_MAC:
1038 1.1 christos features |= mcfmac;
1039 1.1 christos break;
1040 1.1 christos case EF_M68K_CF_EMAC:
1041 1.1 christos features |= mcfemac;
1042 1.1 christos break;
1043 1.1 christos }
1044 1.1 christos if (eflags & EF_M68K_CF_FLOAT)
1045 1.1 christos features |= cfloat;
1046 1.1 christos }
1047 1.1 christos
1048 1.1 christos mach = bfd_m68k_features_to_mach (features);
1049 1.1 christos bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
1050 1.1 christos
1051 1.1 christos return TRUE;
1052 1.1 christos }
1053 1.1 christos
1054 1.1 christos /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag
1055 1.1 christos field based on the machine number. */
1056 1.1 christos
1057 1.1 christos static void
1058 1.1 christos elf_m68k_final_write_processing (bfd *abfd,
1059 1.1 christos bfd_boolean linker ATTRIBUTE_UNUSED)
1060 1.1 christos {
1061 1.1 christos int mach = bfd_get_mach (abfd);
1062 1.1 christos unsigned long e_flags = elf_elfheader (abfd)->e_flags;
1063 1.1 christos
1064 1.1 christos if (!e_flags)
1065 1.1 christos {
1066 1.1 christos unsigned int arch_mask;
1067 1.1 christos
1068 1.1 christos arch_mask = bfd_m68k_mach_to_features (mach);
1069 1.1 christos
1070 1.1 christos if (arch_mask & m68000)
1071 1.1 christos e_flags = EF_M68K_M68000;
1072 1.1 christos else if (arch_mask & cpu32)
1073 1.1 christos e_flags = EF_M68K_CPU32;
1074 1.1 christos else if (arch_mask & fido_a)
1075 1.1 christos e_flags = EF_M68K_FIDO;
1076 1.1 christos else
1077 1.1 christos {
1078 1.1 christos switch (arch_mask
1079 1.1 christos & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp))
1080 1.1 christos {
1081 1.1 christos case mcfisa_a:
1082 1.1 christos e_flags |= EF_M68K_CF_ISA_A_NODIV;
1083 1.1 christos break;
1084 1.1 christos case mcfisa_a | mcfhwdiv:
1085 1.1 christos e_flags |= EF_M68K_CF_ISA_A;
1086 1.1 christos break;
1087 1.1 christos case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp:
1088 1.1 christos e_flags |= EF_M68K_CF_ISA_A_PLUS;
1089 1.1 christos break;
1090 1.1 christos case mcfisa_a | mcfisa_b | mcfhwdiv:
1091 1.1 christos e_flags |= EF_M68K_CF_ISA_B_NOUSP;
1092 1.1 christos break;
1093 1.1 christos case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp:
1094 1.1 christos e_flags |= EF_M68K_CF_ISA_B;
1095 1.1 christos break;
1096 1.1 christos case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp:
1097 1.1 christos e_flags |= EF_M68K_CF_ISA_C;
1098 1.1 christos break;
1099 1.1 christos case mcfisa_a | mcfisa_c | mcfusp:
1100 1.1 christos e_flags |= EF_M68K_CF_ISA_C_NODIV;
1101 1.1 christos break;
1102 1.1 christos }
1103 1.1 christos if (arch_mask & mcfmac)
1104 1.1 christos e_flags |= EF_M68K_CF_MAC;
1105 1.1 christos else if (arch_mask & mcfemac)
1106 1.1 christos e_flags |= EF_M68K_CF_EMAC;
1107 1.1 christos if (arch_mask & cfloat)
1108 1.1 christos e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
1109 1.1 christos }
1110 1.1 christos elf_elfheader (abfd)->e_flags = e_flags;
1111 1.1 christos }
1112 1.1 christos }
1113 1.1 christos
1114 1.1 christos /* Keep m68k-specific flags in the ELF header. */
1115 1.1 christos
1116 1.1.1.2 christos static bfd_boolean
1117 1.1 christos elf32_m68k_set_private_flags (bfd *abfd, flagword flags)
1118 1.1 christos {
1119 1.1 christos elf_elfheader (abfd)->e_flags = flags;
1120 1.1 christos elf_flags_init (abfd) = TRUE;
1121 1.1 christos return TRUE;
1122 1.1 christos }
1123 1.1 christos
1124 1.1 christos /* Merge backend specific data from an object file to the output
1125 1.1 christos object file when linking. */
1126 1.1.1.7 christos static bfd_boolean
1127 1.1 christos elf32_m68k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
1128 1.1.1.7 christos {
1129 1.1 christos bfd *obfd = info->output_bfd;
1130 1.1 christos flagword out_flags;
1131 1.1 christos flagword in_flags;
1132 1.1 christos flagword out_isa;
1133 1.1 christos flagword in_isa;
1134 1.1 christos const bfd_arch_info_type *arch_info;
1135 1.1 christos
1136 1.1 christos if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1137 1.1 christos || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1138 1.1 christos return FALSE;
1139 1.1 christos
1140 1.1 christos /* Get the merged machine. This checks for incompatibility between
1141 1.1 christos Coldfire & non-Coldfire flags, incompability between different
1142 1.1 christos Coldfire ISAs, and incompability between different MAC types. */
1143 1.1 christos arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
1144 1.1 christos if (!arch_info)
1145 1.1 christos return FALSE;
1146 1.1 christos
1147 1.1 christos bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
1148 1.1 christos
1149 1.1 christos in_flags = elf_elfheader (ibfd)->e_flags;
1150 1.1 christos if (!elf_flags_init (obfd))
1151 1.1 christos {
1152 1.1 christos elf_flags_init (obfd) = TRUE;
1153 1.1 christos out_flags = in_flags;
1154 1.1 christos }
1155 1.1 christos else
1156 1.1 christos {
1157 1.1 christos out_flags = elf_elfheader (obfd)->e_flags;
1158 1.1 christos unsigned int variant_mask;
1159 1.1 christos
1160 1.1 christos if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1161 1.1 christos variant_mask = 0;
1162 1.1 christos else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1163 1.1 christos variant_mask = 0;
1164 1.1 christos else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1165 1.1 christos variant_mask = 0;
1166 1.1 christos else
1167 1.1 christos variant_mask = EF_M68K_CF_ISA_MASK;
1168 1.1 christos
1169 1.1 christos in_isa = (in_flags & variant_mask);
1170 1.1 christos out_isa = (out_flags & variant_mask);
1171 1.1 christos if (in_isa > out_isa)
1172 1.1 christos out_flags ^= in_isa ^ out_isa;
1173 1.1 christos if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
1174 1.1 christos && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1175 1.1 christos || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
1176 1.1 christos && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
1177 1.1 christos out_flags = EF_M68K_FIDO;
1178 1.1 christos else
1179 1.1 christos out_flags |= in_flags ^ in_isa;
1180 1.1 christos }
1181 1.1 christos elf_elfheader (obfd)->e_flags = out_flags;
1182 1.1 christos
1183 1.1 christos return TRUE;
1184 1.1 christos }
1185 1.1 christos
1186 1.1 christos /* Display the flags field. */
1187 1.1 christos
1188 1.1 christos static bfd_boolean
1189 1.1 christos elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr)
1190 1.1 christos {
1191 1.1 christos FILE *file = (FILE *) ptr;
1192 1.1 christos flagword eflags = elf_elfheader (abfd)->e_flags;
1193 1.1 christos
1194 1.1 christos BFD_ASSERT (abfd != NULL && ptr != NULL);
1195 1.1 christos
1196 1.1 christos /* Print normal ELF private data. */
1197 1.1 christos _bfd_elf_print_private_bfd_data (abfd, ptr);
1198 1.1 christos
1199 1.1 christos /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
1200 1.1 christos
1201 1.1 christos /* xgettext:c-format */
1202 1.1 christos fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
1203 1.1 christos
1204 1.1 christos if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1205 1.1 christos fprintf (file, " [m68000]");
1206 1.1 christos else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1207 1.1 christos fprintf (file, " [cpu32]");
1208 1.1 christos else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1209 1.1 christos fprintf (file, " [fido]");
1210 1.1 christos else
1211 1.1 christos {
1212 1.1 christos if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
1213 1.1 christos fprintf (file, " [cfv4e]");
1214 1.1 christos
1215 1.1 christos if (eflags & EF_M68K_CF_ISA_MASK)
1216 1.1 christos {
1217 1.1 christos char const *isa = _("unknown");
1218 1.1 christos char const *mac = _("unknown");
1219 1.1 christos char const *additional = "";
1220 1.1 christos
1221 1.1 christos switch (eflags & EF_M68K_CF_ISA_MASK)
1222 1.1 christos {
1223 1.1 christos case EF_M68K_CF_ISA_A_NODIV:
1224 1.1 christos isa = "A";
1225 1.1 christos additional = " [nodiv]";
1226 1.1 christos break;
1227 1.1 christos case EF_M68K_CF_ISA_A:
1228 1.1 christos isa = "A";
1229 1.1 christos break;
1230 1.1 christos case EF_M68K_CF_ISA_A_PLUS:
1231 1.1 christos isa = "A+";
1232 1.1 christos break;
1233 1.1 christos case EF_M68K_CF_ISA_B_NOUSP:
1234 1.1 christos isa = "B";
1235 1.1 christos additional = " [nousp]";
1236 1.1 christos break;
1237 1.1 christos case EF_M68K_CF_ISA_B:
1238 1.1 christos isa = "B";
1239 1.1 christos break;
1240 1.1 christos case EF_M68K_CF_ISA_C:
1241 1.1 christos isa = "C";
1242 1.1 christos break;
1243 1.1 christos case EF_M68K_CF_ISA_C_NODIV:
1244 1.1 christos isa = "C";
1245 1.1 christos additional = " [nodiv]";
1246 1.1 christos break;
1247 1.1 christos }
1248 1.1 christos fprintf (file, " [isa %s]%s", isa, additional);
1249 1.1 christos
1250 1.1 christos if (eflags & EF_M68K_CF_FLOAT)
1251 1.1 christos fprintf (file, " [float]");
1252 1.1 christos
1253 1.1 christos switch (eflags & EF_M68K_CF_MAC_MASK)
1254 1.1 christos {
1255 1.1 christos case 0:
1256 1.1 christos mac = NULL;
1257 1.1 christos break;
1258 1.1 christos case EF_M68K_CF_MAC:
1259 1.1 christos mac = "mac";
1260 1.1 christos break;
1261 1.1 christos case EF_M68K_CF_EMAC:
1262 1.1 christos mac = "emac";
1263 1.1 christos break;
1264 1.1 christos case EF_M68K_CF_EMAC_B:
1265 1.1 christos mac = "emac_b";
1266 1.1 christos break;
1267 1.1 christos }
1268 1.1 christos if (mac)
1269 1.1 christos fprintf (file, " [%s]", mac);
1270 1.1 christos }
1271 1.1 christos }
1272 1.1 christos
1273 1.1 christos fputc ('\n', file);
1274 1.1 christos
1275 1.1 christos return TRUE;
1276 1.1 christos }
1277 1.1 christos
1278 1.1 christos /* Multi-GOT support implementation design:
1279 1.1 christos
1280 1.1 christos Multi-GOT starts in check_relocs hook. There we scan all
1281 1.1 christos relocations of a BFD and build a local GOT (struct elf_m68k_got)
1282 1.1 christos for it. If a single BFD appears to require too many GOT slots with
1283 1.1 christos R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
1284 1.1 christos to user.
1285 1.1 christos After check_relocs has been invoked for each input BFD, we have
1286 1.1 christos constructed a GOT for each input BFD.
1287 1.1 christos
1288 1.1 christos To minimize total number of GOTs required for a particular output BFD
1289 1.1 christos (as some environments support only 1 GOT per output object) we try
1290 1.1 christos to merge some of the GOTs to share an offset space. Ideally [and in most
1291 1.1 christos cases] we end up with a single GOT. In cases when there are too many
1292 1.1 christos restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
1293 1.1 christos several GOTs, assuming the environment can handle them.
1294 1.1 christos
1295 1.1 christos Partitioning is done in elf_m68k_partition_multi_got. We start with
1296 1.1 christos an empty GOT and traverse bfd2got hashtable putting got_entries from
1297 1.1 christos local GOTs to the new 'big' one. We do that by constructing an
1298 1.1 christos intermediate GOT holding all the entries the local GOT has and the big
1299 1.1 christos GOT lacks. Then we check if there is room in the big GOT to accomodate
1300 1.1 christos all the entries from diff. On success we add those entries to the big
1301 1.1 christos GOT; on failure we start the new 'big' GOT and retry the adding of
1302 1.1 christos entries from the local GOT. Note that this retry will always succeed as
1303 1.1 christos each local GOT doesn't overflow the limits. After partitioning we
1304 1.1 christos end up with each bfd assigned one of the big GOTs. GOT entries in the
1305 1.1 christos big GOTs are initialized with GOT offsets. Note that big GOTs are
1306 1.1 christos positioned consequently in program space and represent a single huge GOT
1307 1.1 christos to the outside world.
1308 1.1 christos
1309 1.1 christos After that we get to elf_m68k_relocate_section. There we
1310 1.1 christos adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
1311 1.1 christos relocations to refer to appropriate [assigned to current input_bfd]
1312 1.1 christos big GOT.
1313 1.1 christos
1314 1.1 christos Notes:
1315 1.1 christos
1316 1.1 christos GOT entry type: We have several types of GOT entries.
1317 1.1 christos * R_8 type is used in entries for symbols that have at least one
1318 1.1 christos R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40
1319 1.1 christos such entries in one GOT.
1320 1.1 christos * R_16 type is used in entries for symbols that have at least one
1321 1.1 christos R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations.
1322 1.1 christos We can have at most 0x4000 such entries in one GOT.
1323 1.1 christos * R_32 type is used in all other cases. We can have as many
1324 1.1 christos such entries in one GOT as we'd like.
1325 1.1 christos When counting relocations we have to include the count of the smaller
1326 1.1 christos ranged relocations in the counts of the larger ranged ones in order
1327 1.1 christos to correctly detect overflow.
1328 1.1 christos
1329 1.1 christos Sorting the GOT: In each GOT starting offsets are assigned to
1330 1.1 christos R_8 entries, which are followed by R_16 entries, and
1331 1.1 christos R_32 entries go at the end. See finalize_got_offsets for details.
1332 1.1 christos
1333 1.1 christos Negative GOT offsets: To double usable offset range of GOTs we use
1334 1.1 christos negative offsets. As we assign entries with GOT offsets relative to
1335 1.1 christos start of .got section, the offset values are positive. They become
1336 1.1 christos negative only in relocate_section where got->offset value is
1337 1.1 christos subtracted from them.
1338 1.1 christos
1339 1.1 christos 3 special GOT entries: There are 3 special GOT entries used internally
1340 1.1 christos by loader. These entries happen to be placed to .got.plt section,
1341 1.1 christos so we don't do anything about them in multi-GOT support.
1342 1.1 christos
1343 1.1 christos Memory management: All data except for hashtables
1344 1.1 christos multi_got->bfd2got and got->entries are allocated on
1345 1.1 christos elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
1346 1.1 christos to most functions), so we don't need to care to free them. At the
1347 1.1 christos moment of allocation hashtables are being linked into main data
1348 1.1 christos structure (multi_got), all pieces of which are reachable from
1349 1.1 christos elf_m68k_multi_got (info). We deallocate them in
1350 1.1 christos elf_m68k_link_hash_table_free. */
1351 1.1 christos
1352 1.1 christos /* Initialize GOT. */
1353 1.1 christos
1354 1.1 christos static void
1355 1.1 christos elf_m68k_init_got (struct elf_m68k_got *got)
1356 1.1 christos {
1357 1.1 christos got->entries = NULL;
1358 1.1 christos got->n_slots[R_8] = 0;
1359 1.1 christos got->n_slots[R_16] = 0;
1360 1.1 christos got->n_slots[R_32] = 0;
1361 1.1 christos got->local_n_slots = 0;
1362 1.1 christos got->offset = (bfd_vma) -1;
1363 1.1 christos }
1364 1.1 christos
1365 1.1 christos /* Destruct GOT. */
1366 1.1 christos
1367 1.1 christos static void
1368 1.1 christos elf_m68k_clear_got (struct elf_m68k_got *got)
1369 1.1 christos {
1370 1.1 christos if (got->entries != NULL)
1371 1.1 christos {
1372 1.1 christos htab_delete (got->entries);
1373 1.1 christos got->entries = NULL;
1374 1.1 christos }
1375 1.1 christos }
1376 1.1 christos
1377 1.1 christos /* Create and empty GOT structure. INFO is the context where memory
1378 1.1 christos should be allocated. */
1379 1.1 christos
1380 1.1 christos static struct elf_m68k_got *
1381 1.1 christos elf_m68k_create_empty_got (struct bfd_link_info *info)
1382 1.1 christos {
1383 1.1 christos struct elf_m68k_got *got;
1384 1.1 christos
1385 1.1 christos got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got));
1386 1.1 christos if (got == NULL)
1387 1.1 christos return NULL;
1388 1.1 christos
1389 1.1 christos elf_m68k_init_got (got);
1390 1.1 christos
1391 1.1 christos return got;
1392 1.1 christos }
1393 1.1 christos
1394 1.1 christos /* Initialize KEY. */
1395 1.1 christos
1396 1.1 christos static void
1397 1.1 christos elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key,
1398 1.1 christos struct elf_link_hash_entry *h,
1399 1.1 christos const bfd *abfd, unsigned long symndx,
1400 1.1 christos enum elf_m68k_reloc_type reloc_type)
1401 1.1 christos {
1402 1.1 christos if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32)
1403 1.1 christos /* All TLS_LDM relocations share a single GOT entry. */
1404 1.1 christos {
1405 1.1 christos key->bfd = NULL;
1406 1.1 christos key->symndx = 0;
1407 1.1 christos }
1408 1.1 christos else if (h != NULL)
1409 1.1 christos /* Global symbols are identified with their got_entry_key. */
1410 1.1 christos {
1411 1.1 christos key->bfd = NULL;
1412 1.1 christos key->symndx = elf_m68k_hash_entry (h)->got_entry_key;
1413 1.1 christos BFD_ASSERT (key->symndx != 0);
1414 1.1 christos }
1415 1.1 christos else
1416 1.1 christos /* Local symbols are identified by BFD they appear in and symndx. */
1417 1.1 christos {
1418 1.1 christos key->bfd = abfd;
1419 1.1 christos key->symndx = symndx;
1420 1.1 christos }
1421 1.1 christos
1422 1.1 christos key->type = reloc_type;
1423 1.1 christos }
1424 1.1 christos
1425 1.1 christos /* Calculate hash of got_entry.
1426 1.1 christos ??? Is it good? */
1427 1.1 christos
1428 1.1 christos static hashval_t
1429 1.1 christos elf_m68k_got_entry_hash (const void *_entry)
1430 1.1 christos {
1431 1.1 christos const struct elf_m68k_got_entry_key *key;
1432 1.1 christos
1433 1.1 christos key = &((const struct elf_m68k_got_entry *) _entry)->key_;
1434 1.1 christos
1435 1.1 christos return (key->symndx
1436 1.1 christos + (key->bfd != NULL ? (int) key->bfd->id : -1)
1437 1.1 christos + elf_m68k_reloc_got_type (key->type));
1438 1.1 christos }
1439 1.1 christos
1440 1.1 christos /* Check if two got entries are equal. */
1441 1.1 christos
1442 1.1 christos static int
1443 1.1 christos elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2)
1444 1.1 christos {
1445 1.1 christos const struct elf_m68k_got_entry_key *key1;
1446 1.1 christos const struct elf_m68k_got_entry_key *key2;
1447 1.1 christos
1448 1.1 christos key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_;
1449 1.1 christos key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_;
1450 1.1 christos
1451 1.1 christos return (key1->bfd == key2->bfd
1452 1.1 christos && key1->symndx == key2->symndx
1453 1.1 christos && (elf_m68k_reloc_got_type (key1->type)
1454 1.1 christos == elf_m68k_reloc_got_type (key2->type)));
1455 1.1 christos }
1456 1.1 christos
1457 1.1 christos /* When using negative offsets, we allocate one extra R_8, one extra R_16
1458 1.1 christos and one extra R_32 slots to simplify handling of 2-slot entries during
1459 1.1 christos offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */
1460 1.1 christos
1461 1.1 christos /* Maximal number of R_8 slots in a single GOT. */
1462 1.1 christos #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \
1463 1.1 christos (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1464 1.1 christos ? (0x40 - 1) \
1465 1.1 christos : 0x20)
1466 1.1 christos
1467 1.1 christos /* Maximal number of R_8 and R_16 slots in a single GOT. */
1468 1.1 christos #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \
1469 1.1 christos (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1470 1.1 christos ? (0x4000 - 2) \
1471 1.1 christos : 0x2000)
1472 1.1 christos
1473 1.1 christos /* SEARCH - simply search the hashtable, don't insert new entries or fail when
1474 1.1 christos the entry cannot be found.
1475 1.1 christos FIND_OR_CREATE - search for an existing entry, but create new if there's
1476 1.1 christos no such.
1477 1.1 christos MUST_FIND - search for an existing entry and assert that it exist.
1478 1.1 christos MUST_CREATE - assert that there's no such entry and create new one. */
1479 1.1 christos enum elf_m68k_get_entry_howto
1480 1.1 christos {
1481 1.1 christos SEARCH,
1482 1.1 christos FIND_OR_CREATE,
1483 1.1 christos MUST_FIND,
1484 1.1 christos MUST_CREATE
1485 1.1 christos };
1486 1.1 christos
1487 1.1 christos /* Get or create (depending on HOWTO) entry with KEY in GOT.
1488 1.1 christos INFO is context in which memory should be allocated (can be NULL if
1489 1.1 christos HOWTO is SEARCH or MUST_FIND). */
1490 1.1 christos
1491 1.1 christos static struct elf_m68k_got_entry *
1492 1.1 christos elf_m68k_get_got_entry (struct elf_m68k_got *got,
1493 1.1 christos const struct elf_m68k_got_entry_key *key,
1494 1.1 christos enum elf_m68k_get_entry_howto howto,
1495 1.1 christos struct bfd_link_info *info)
1496 1.1 christos {
1497 1.1 christos struct elf_m68k_got_entry entry_;
1498 1.1 christos struct elf_m68k_got_entry *entry;
1499 1.1 christos void **ptr;
1500 1.1 christos
1501 1.1 christos BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1502 1.1 christos
1503 1.1 christos if (got->entries == NULL)
1504 1.1 christos /* This is the first entry in ABFD. Initialize hashtable. */
1505 1.1 christos {
1506 1.1 christos if (howto == SEARCH)
1507 1.1 christos return NULL;
1508 1.1 christos
1509 1.1 christos got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT
1510 1.1 christos (info),
1511 1.1 christos elf_m68k_got_entry_hash,
1512 1.1 christos elf_m68k_got_entry_eq, NULL);
1513 1.1 christos if (got->entries == NULL)
1514 1.1 christos {
1515 1.1 christos bfd_set_error (bfd_error_no_memory);
1516 1.1 christos return NULL;
1517 1.1 christos }
1518 1.1 christos }
1519 1.1 christos
1520 1.1 christos entry_.key_ = *key;
1521 1.1 christos ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH
1522 1.1 christos ? INSERT : NO_INSERT));
1523 1.1 christos if (ptr == NULL)
1524 1.1 christos {
1525 1.1 christos if (howto == SEARCH)
1526 1.1 christos /* Entry not found. */
1527 1.1 christos return NULL;
1528 1.1 christos
1529 1.1 christos /* We're out of memory. */
1530 1.1 christos bfd_set_error (bfd_error_no_memory);
1531 1.1 christos return NULL;
1532 1.1 christos }
1533 1.1 christos
1534 1.1 christos if (*ptr == NULL)
1535 1.1 christos /* We didn't find the entry and we're asked to create a new one. */
1536 1.1 christos {
1537 1.1 christos BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1538 1.1 christos
1539 1.1 christos entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry));
1540 1.1 christos if (entry == NULL)
1541 1.1 christos return NULL;
1542 1.1 christos
1543 1.1 christos /* Initialize new entry. */
1544 1.1 christos entry->key_ = *key;
1545 1.1 christos
1546 1.1 christos entry->u.s1.refcount = 0;
1547 1.1 christos
1548 1.1 christos /* Mark the entry as not initialized. */
1549 1.1 christos entry->key_.type = R_68K_max;
1550 1.1 christos
1551 1.1 christos *ptr = entry;
1552 1.1 christos }
1553 1.1 christos else
1554 1.1 christos /* We found the entry. */
1555 1.1 christos {
1556 1.1 christos BFD_ASSERT (howto != MUST_CREATE);
1557 1.1 christos
1558 1.1 christos entry = *ptr;
1559 1.1 christos }
1560 1.1 christos
1561 1.1 christos return entry;
1562 1.1 christos }
1563 1.1 christos
1564 1.1 christos /* Update GOT counters when merging entry of WAS type with entry of NEW type.
1565 1.1 christos Return the value to which ENTRY's type should be set. */
1566 1.1 christos
1567 1.1 christos static enum elf_m68k_reloc_type
1568 1.1 christos elf_m68k_update_got_entry_type (struct elf_m68k_got *got,
1569 1.1 christos enum elf_m68k_reloc_type was,
1570 1.1 christos enum elf_m68k_reloc_type new_reloc)
1571 1.1 christos {
1572 1.1 christos enum elf_m68k_got_offset_size was_size;
1573 1.1 christos enum elf_m68k_got_offset_size new_size;
1574 1.1 christos bfd_vma n_slots;
1575 1.1 christos
1576 1.1 christos if (was == R_68K_max)
1577 1.1 christos /* The type of the entry is not initialized yet. */
1578 1.1 christos {
1579 1.1 christos /* Update all got->n_slots counters, including n_slots[R_32]. */
1580 1.1 christos was_size = R_LAST;
1581 1.1 christos
1582 1.1 christos was = new_reloc;
1583 1.1 christos }
1584 1.1 christos else
1585 1.1 christos {
1586 1.1 christos /* !!! We, probably, should emit an error rather then fail on assert
1587 1.1 christos in such a case. */
1588 1.1 christos BFD_ASSERT (elf_m68k_reloc_got_type (was)
1589 1.1 christos == elf_m68k_reloc_got_type (new_reloc));
1590 1.1 christos
1591 1.1 christos was_size = elf_m68k_reloc_got_offset_size (was);
1592 1.1 christos }
1593 1.1 christos
1594 1.1 christos new_size = elf_m68k_reloc_got_offset_size (new_reloc);
1595 1.1 christos n_slots = elf_m68k_reloc_got_n_slots (new_reloc);
1596 1.1 christos
1597 1.1 christos while (was_size > new_size)
1598 1.1 christos {
1599 1.1 christos --was_size;
1600 1.1 christos got->n_slots[was_size] += n_slots;
1601 1.1 christos }
1602 1.1 christos
1603 1.1 christos if (new_reloc > was)
1604 1.1 christos /* Relocations are ordered from bigger got offset size to lesser,
1605 1.1 christos so choose the relocation type with lesser offset size. */
1606 1.1 christos was = new_reloc;
1607 1.1 christos
1608 1.1 christos return was;
1609 1.1 christos }
1610 1.1 christos
1611 1.1 christos /* Add new or update existing entry to GOT.
1612 1.1 christos H, ABFD, TYPE and SYMNDX is data for the entry.
1613 1.1 christos INFO is a context where memory should be allocated. */
1614 1.1 christos
1615 1.1 christos static struct elf_m68k_got_entry *
1616 1.1 christos elf_m68k_add_entry_to_got (struct elf_m68k_got *got,
1617 1.1 christos struct elf_link_hash_entry *h,
1618 1.1 christos const bfd *abfd,
1619 1.1 christos enum elf_m68k_reloc_type reloc_type,
1620 1.1 christos unsigned long symndx,
1621 1.1 christos struct bfd_link_info *info)
1622 1.1 christos {
1623 1.1 christos struct elf_m68k_got_entry_key key_;
1624 1.1 christos struct elf_m68k_got_entry *entry;
1625 1.1 christos
1626 1.1 christos if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0)
1627 1.1 christos elf_m68k_hash_entry (h)->got_entry_key
1628 1.1 christos = elf_m68k_multi_got (info)->global_symndx++;
1629 1.1 christos
1630 1.1 christos elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type);
1631 1.1 christos
1632 1.1 christos entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info);
1633 1.1 christos if (entry == NULL)
1634 1.1 christos return NULL;
1635 1.1 christos
1636 1.1 christos /* Determine entry's type and update got->n_slots counters. */
1637 1.1 christos entry->key_.type = elf_m68k_update_got_entry_type (got,
1638 1.1 christos entry->key_.type,
1639 1.1 christos reloc_type);
1640 1.1 christos
1641 1.1 christos /* Update refcount. */
1642 1.1 christos ++entry->u.s1.refcount;
1643 1.1 christos
1644 1.1 christos if (entry->u.s1.refcount == 1)
1645 1.1 christos /* We see this entry for the first time. */
1646 1.1 christos {
1647 1.1 christos if (entry->key_.bfd != NULL)
1648 1.1 christos got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type);
1649 1.1 christos }
1650 1.1 christos
1651 1.1 christos BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots);
1652 1.1 christos
1653 1.1 christos if ((got->n_slots[R_8]
1654 1.1 christos > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1655 1.1 christos || (got->n_slots[R_16]
1656 1.1 christos > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
1657 1.1 christos /* This BFD has too many relocation. */
1658 1.1 christos {
1659 1.1.1.7 christos if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1660 1.1.1.8 christos /* xgettext:c-format */
1661 1.1.1.8 christos _bfd_error_handler (_("%pB: GOT overflow: "
1662 1.1.1.7 christos "number of relocations with 8-bit "
1663 1.1.1.7 christos "offset > %d"),
1664 1.1.1.7 christos abfd,
1665 1.1 christos ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info));
1666 1.1.1.7 christos else
1667 1.1.1.8 christos /* xgettext:c-format */
1668 1.1.1.8 christos _bfd_error_handler (_("%pB: GOT overflow: "
1669 1.1.1.7 christos "number of relocations with 8- or 16-bit "
1670 1.1.1.7 christos "offset > %d"),
1671 1.1.1.7 christos abfd,
1672 1.1 christos ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info));
1673 1.1 christos
1674 1.1 christos return NULL;
1675 1.1 christos }
1676 1.1 christos
1677 1.1 christos return entry;
1678 1.1 christos }
1679 1.1 christos
1680 1.1 christos /* Compute the hash value of the bfd in a bfd2got hash entry. */
1681 1.1 christos
1682 1.1 christos static hashval_t
1683 1.1 christos elf_m68k_bfd2got_entry_hash (const void *entry)
1684 1.1 christos {
1685 1.1 christos const struct elf_m68k_bfd2got_entry *e;
1686 1.1 christos
1687 1.1 christos e = (const struct elf_m68k_bfd2got_entry *) entry;
1688 1.1 christos
1689 1.1 christos return e->bfd->id;
1690 1.1 christos }
1691 1.1 christos
1692 1.1 christos /* Check whether two hash entries have the same bfd. */
1693 1.1 christos
1694 1.1 christos static int
1695 1.1 christos elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2)
1696 1.1 christos {
1697 1.1 christos const struct elf_m68k_bfd2got_entry *e1;
1698 1.1 christos const struct elf_m68k_bfd2got_entry *e2;
1699 1.1 christos
1700 1.1 christos e1 = (const struct elf_m68k_bfd2got_entry *) entry1;
1701 1.1 christos e2 = (const struct elf_m68k_bfd2got_entry *) entry2;
1702 1.1 christos
1703 1.1 christos return e1->bfd == e2->bfd;
1704 1.1 christos }
1705 1.1 christos
1706 1.1 christos /* Destruct a bfd2got entry. */
1707 1.1 christos
1708 1.1 christos static void
1709 1.1 christos elf_m68k_bfd2got_entry_del (void *_entry)
1710 1.1 christos {
1711 1.1 christos struct elf_m68k_bfd2got_entry *entry;
1712 1.1 christos
1713 1.1 christos entry = (struct elf_m68k_bfd2got_entry *) _entry;
1714 1.1 christos
1715 1.1 christos BFD_ASSERT (entry->got != NULL);
1716 1.1 christos elf_m68k_clear_got (entry->got);
1717 1.1 christos }
1718 1.1 christos
1719 1.1 christos /* Find existing or create new (depending on HOWTO) bfd2got entry in
1720 1.1 christos MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1721 1.1 christos memory should be allocated. */
1722 1.1 christos
1723 1.1 christos static struct elf_m68k_bfd2got_entry *
1724 1.1 christos elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got,
1725 1.1 christos const bfd *abfd,
1726 1.1 christos enum elf_m68k_get_entry_howto howto,
1727 1.1 christos struct bfd_link_info *info)
1728 1.1 christos {
1729 1.1 christos struct elf_m68k_bfd2got_entry entry_;
1730 1.1 christos void **ptr;
1731 1.1 christos struct elf_m68k_bfd2got_entry *entry;
1732 1.1 christos
1733 1.1 christos BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1734 1.1 christos
1735 1.1 christos if (multi_got->bfd2got == NULL)
1736 1.1 christos /* This is the first GOT. Initialize bfd2got. */
1737 1.1 christos {
1738 1.1 christos if (howto == SEARCH)
1739 1.1 christos return NULL;
1740 1.1 christos
1741 1.1 christos multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash,
1742 1.1 christos elf_m68k_bfd2got_entry_eq,
1743 1.1 christos elf_m68k_bfd2got_entry_del);
1744 1.1 christos if (multi_got->bfd2got == NULL)
1745 1.1 christos {
1746 1.1 christos bfd_set_error (bfd_error_no_memory);
1747 1.1 christos return NULL;
1748 1.1 christos }
1749 1.1 christos }
1750 1.1 christos
1751 1.1 christos entry_.bfd = abfd;
1752 1.1 christos ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH
1753 1.1 christos ? INSERT : NO_INSERT));
1754 1.1 christos if (ptr == NULL)
1755 1.1 christos {
1756 1.1 christos if (howto == SEARCH)
1757 1.1 christos /* Entry not found. */
1758 1.1 christos return NULL;
1759 1.1 christos
1760 1.1 christos /* We're out of memory. */
1761 1.1 christos bfd_set_error (bfd_error_no_memory);
1762 1.1 christos return NULL;
1763 1.1 christos }
1764 1.1 christos
1765 1.1 christos if (*ptr == NULL)
1766 1.1 christos /* Entry was not found. Create new one. */
1767 1.1 christos {
1768 1.1 christos BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1769 1.1 christos
1770 1.1 christos entry = ((struct elf_m68k_bfd2got_entry *)
1771 1.1 christos bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)));
1772 1.1 christos if (entry == NULL)
1773 1.1 christos return NULL;
1774 1.1 christos
1775 1.1 christos entry->bfd = abfd;
1776 1.1 christos
1777 1.1 christos entry->got = elf_m68k_create_empty_got (info);
1778 1.1 christos if (entry->got == NULL)
1779 1.1 christos return NULL;
1780 1.1 christos
1781 1.1 christos *ptr = entry;
1782 1.1 christos }
1783 1.1 christos else
1784 1.1 christos {
1785 1.1 christos BFD_ASSERT (howto != MUST_CREATE);
1786 1.1 christos
1787 1.1 christos /* Return existing entry. */
1788 1.1 christos entry = *ptr;
1789 1.1 christos }
1790 1.1 christos
1791 1.1 christos return entry;
1792 1.1 christos }
1793 1.1 christos
1794 1.1 christos struct elf_m68k_can_merge_gots_arg
1795 1.1 christos {
1796 1.1 christos /* A current_got that we constructing a DIFF against. */
1797 1.1 christos struct elf_m68k_got *big;
1798 1.1 christos
1799 1.1 christos /* GOT holding entries not present or that should be changed in
1800 1.1 christos BIG. */
1801 1.1 christos struct elf_m68k_got *diff;
1802 1.1 christos
1803 1.1 christos /* Context where to allocate memory. */
1804 1.1 christos struct bfd_link_info *info;
1805 1.1 christos
1806 1.1 christos /* Error flag. */
1807 1.1 christos bfd_boolean error_p;
1808 1.1 christos };
1809 1.1 christos
1810 1.1 christos /* Process a single entry from the small GOT to see if it should be added
1811 1.1 christos or updated in the big GOT. */
1812 1.1 christos
1813 1.1 christos static int
1814 1.1 christos elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg)
1815 1.1 christos {
1816 1.1 christos const struct elf_m68k_got_entry *entry1;
1817 1.1 christos struct elf_m68k_can_merge_gots_arg *arg;
1818 1.1 christos const struct elf_m68k_got_entry *entry2;
1819 1.1 christos enum elf_m68k_reloc_type type;
1820 1.1 christos
1821 1.1 christos entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr;
1822 1.1 christos arg = (struct elf_m68k_can_merge_gots_arg *) _arg;
1823 1.1 christos
1824 1.1 christos entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL);
1825 1.1 christos
1826 1.1 christos if (entry2 != NULL)
1827 1.1 christos /* We found an existing entry. Check if we should update it. */
1828 1.1 christos {
1829 1.1 christos type = elf_m68k_update_got_entry_type (arg->diff,
1830 1.1 christos entry2->key_.type,
1831 1.1 christos entry1->key_.type);
1832 1.1 christos
1833 1.1 christos if (type == entry2->key_.type)
1834 1.1 christos /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1835 1.1 christos To skip creation of difference entry we use the type,
1836 1.1 christos which we won't see in GOT entries for sure. */
1837 1.1 christos type = R_68K_max;
1838 1.1 christos }
1839 1.1 christos else
1840 1.1 christos /* We didn't find the entry. Add entry1 to DIFF. */
1841 1.1 christos {
1842 1.1 christos BFD_ASSERT (entry1->key_.type != R_68K_max);
1843 1.1 christos
1844 1.1 christos type = elf_m68k_update_got_entry_type (arg->diff,
1845 1.1 christos R_68K_max, entry1->key_.type);
1846 1.1 christos
1847 1.1 christos if (entry1->key_.bfd != NULL)
1848 1.1 christos arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type);
1849 1.1 christos }
1850 1.1 christos
1851 1.1 christos if (type != R_68K_max)
1852 1.1 christos /* Create an entry in DIFF. */
1853 1.1 christos {
1854 1.1 christos struct elf_m68k_got_entry *entry;
1855 1.1 christos
1856 1.1 christos entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE,
1857 1.1 christos arg->info);
1858 1.1 christos if (entry == NULL)
1859 1.1 christos {
1860 1.1 christos arg->error_p = TRUE;
1861 1.1 christos return 0;
1862 1.1 christos }
1863 1.1 christos
1864 1.1 christos entry->key_.type = type;
1865 1.1 christos }
1866 1.1 christos
1867 1.1 christos return 1;
1868 1.1 christos }
1869 1.1 christos
1870 1.1 christos /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1871 1.1 christos Construct DIFF GOT holding the entries which should be added or updated
1872 1.1 christos in BIG GOT to accumulate information from SMALL.
1873 1.1 christos INFO is the context where memory should be allocated. */
1874 1.1 christos
1875 1.1 christos static bfd_boolean
1876 1.1 christos elf_m68k_can_merge_gots (struct elf_m68k_got *big,
1877 1.1 christos const struct elf_m68k_got *small,
1878 1.1 christos struct bfd_link_info *info,
1879 1.1 christos struct elf_m68k_got *diff)
1880 1.1 christos {
1881 1.1 christos struct elf_m68k_can_merge_gots_arg arg_;
1882 1.1 christos
1883 1.1 christos BFD_ASSERT (small->offset == (bfd_vma) -1);
1884 1.1 christos
1885 1.1 christos arg_.big = big;
1886 1.1 christos arg_.diff = diff;
1887 1.1 christos arg_.info = info;
1888 1.1 christos arg_.error_p = FALSE;
1889 1.1 christos htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_);
1890 1.1 christos if (arg_.error_p)
1891 1.1 christos {
1892 1.1 christos diff->offset = 0;
1893 1.1 christos return FALSE;
1894 1.1 christos }
1895 1.1 christos
1896 1.1 christos /* Check for overflow. */
1897 1.1 christos if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8]
1898 1.1 christos > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1899 1.1 christos || (big->n_slots[R_16] + arg_.diff->n_slots[R_16]
1900 1.1 christos > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
1901 1.1 christos return FALSE;
1902 1.1 christos
1903 1.1 christos return TRUE;
1904 1.1 christos }
1905 1.1 christos
1906 1.1 christos struct elf_m68k_merge_gots_arg
1907 1.1 christos {
1908 1.1 christos /* The BIG got. */
1909 1.1 christos struct elf_m68k_got *big;
1910 1.1 christos
1911 1.1 christos /* Context where memory should be allocated. */
1912 1.1 christos struct bfd_link_info *info;
1913 1.1 christos
1914 1.1 christos /* Error flag. */
1915 1.1 christos bfd_boolean error_p;
1916 1.1 christos };
1917 1.1 christos
1918 1.1 christos /* Process a single entry from DIFF got. Add or update corresponding
1919 1.1 christos entry in the BIG got. */
1920 1.1 christos
1921 1.1 christos static int
1922 1.1 christos elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg)
1923 1.1 christos {
1924 1.1 christos const struct elf_m68k_got_entry *from;
1925 1.1 christos struct elf_m68k_merge_gots_arg *arg;
1926 1.1 christos struct elf_m68k_got_entry *to;
1927 1.1 christos
1928 1.1 christos from = (const struct elf_m68k_got_entry *) *entry_ptr;
1929 1.1 christos arg = (struct elf_m68k_merge_gots_arg *) _arg;
1930 1.1 christos
1931 1.1 christos to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE,
1932 1.1 christos arg->info);
1933 1.1 christos if (to == NULL)
1934 1.1 christos {
1935 1.1 christos arg->error_p = TRUE;
1936 1.1 christos return 0;
1937 1.1 christos }
1938 1.1 christos
1939 1.1 christos BFD_ASSERT (to->u.s1.refcount == 0);
1940 1.1 christos /* All we need to merge is TYPE. */
1941 1.1 christos to->key_.type = from->key_.type;
1942 1.1 christos
1943 1.1 christos return 1;
1944 1.1 christos }
1945 1.1 christos
1946 1.1 christos /* Merge data from DIFF to BIG. INFO is context where memory should be
1947 1.1 christos allocated. */
1948 1.1 christos
1949 1.1 christos static bfd_boolean
1950 1.1 christos elf_m68k_merge_gots (struct elf_m68k_got *big,
1951 1.1 christos struct elf_m68k_got *diff,
1952 1.1 christos struct bfd_link_info *info)
1953 1.1 christos {
1954 1.1 christos if (diff->entries != NULL)
1955 1.1 christos /* DIFF is not empty. Merge it into BIG GOT. */
1956 1.1 christos {
1957 1.1 christos struct elf_m68k_merge_gots_arg arg_;
1958 1.1 christos
1959 1.1 christos /* Merge entries. */
1960 1.1 christos arg_.big = big;
1961 1.1 christos arg_.info = info;
1962 1.1 christos arg_.error_p = FALSE;
1963 1.1 christos htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_);
1964 1.1 christos if (arg_.error_p)
1965 1.1 christos return FALSE;
1966 1.1 christos
1967 1.1 christos /* Merge counters. */
1968 1.1 christos big->n_slots[R_8] += diff->n_slots[R_8];
1969 1.1 christos big->n_slots[R_16] += diff->n_slots[R_16];
1970 1.1 christos big->n_slots[R_32] += diff->n_slots[R_32];
1971 1.1 christos big->local_n_slots += diff->local_n_slots;
1972 1.1 christos }
1973 1.1 christos else
1974 1.1 christos /* DIFF is empty. */
1975 1.1 christos {
1976 1.1 christos BFD_ASSERT (diff->n_slots[R_8] == 0);
1977 1.1 christos BFD_ASSERT (diff->n_slots[R_16] == 0);
1978 1.1 christos BFD_ASSERT (diff->n_slots[R_32] == 0);
1979 1.1 christos BFD_ASSERT (diff->local_n_slots == 0);
1980 1.1 christos }
1981 1.1 christos
1982 1.1 christos BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p
1983 1.1 christos || ((big->n_slots[R_8]
1984 1.1 christos <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1985 1.1 christos && (big->n_slots[R_16]
1986 1.1 christos <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))));
1987 1.1 christos
1988 1.1 christos return TRUE;
1989 1.1 christos }
1990 1.1 christos
1991 1.1 christos struct elf_m68k_finalize_got_offsets_arg
1992 1.1 christos {
1993 1.1 christos /* Ranges of the offsets for GOT entries.
1994 1.1 christos R_x entries receive offsets between offset1[R_x] and offset2[R_x].
1995 1.1 christos R_x is R_8, R_16 and R_32. */
1996 1.1 christos bfd_vma *offset1;
1997 1.1 christos bfd_vma *offset2;
1998 1.1 christos
1999 1.1 christos /* Mapping from global symndx to global symbols.
2000 1.1 christos This is used to build lists of got entries for global symbols. */
2001 1.1 christos struct elf_m68k_link_hash_entry **symndx2h;
2002 1.1 christos
2003 1.1 christos bfd_vma n_ldm_entries;
2004 1.1 christos };
2005 1.1 christos
2006 1.1 christos /* Assign ENTRY an offset. Build list of GOT entries for global symbols
2007 1.1 christos along the way. */
2008 1.1 christos
2009 1.1 christos static int
2010 1.1 christos elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg)
2011 1.1 christos {
2012 1.1 christos struct elf_m68k_got_entry *entry;
2013 1.1 christos struct elf_m68k_finalize_got_offsets_arg *arg;
2014 1.1 christos
2015 1.1 christos enum elf_m68k_got_offset_size got_offset_size;
2016 1.1 christos bfd_vma entry_size;
2017 1.1 christos
2018 1.1 christos entry = (struct elf_m68k_got_entry *) *entry_ptr;
2019 1.1 christos arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg;
2020 1.1 christos
2021 1.1 christos /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
2022 1.1 christos BFD_ASSERT (entry->u.s1.refcount == 0);
2023 1.1 christos
2024 1.1 christos /* Get GOT offset size for the entry . */
2025 1.1 christos got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type);
2026 1.1 christos
2027 1.1 christos /* Calculate entry size in bytes. */
2028 1.1 christos entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type);
2029 1.1 christos
2030 1.1 christos /* Check if we should switch to negative range of the offsets. */
2031 1.1 christos if (arg->offset1[got_offset_size] + entry_size
2032 1.1 christos > arg->offset2[got_offset_size])
2033 1.1 christos {
2034 1.1 christos /* Verify that this is the only switch to negative range for
2035 1.1 christos got_offset_size. If this assertion fails, then we've miscalculated
2036 1.1 christos range for got_offset_size entries in
2037 1.1 christos elf_m68k_finalize_got_offsets. */
2038 1.1 christos BFD_ASSERT (arg->offset2[got_offset_size]
2039 1.1 christos != arg->offset2[-(int) got_offset_size - 1]);
2040 1.1 christos
2041 1.1 christos /* Switch. */
2042 1.1 christos arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1];
2043 1.1 christos arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1];
2044 1.1 christos
2045 1.1 christos /* Verify that now we have enough room for the entry. */
2046 1.1 christos BFD_ASSERT (arg->offset1[got_offset_size] + entry_size
2047 1.1 christos <= arg->offset2[got_offset_size]);
2048 1.1 christos }
2049 1.1 christos
2050 1.1 christos /* Assign offset to entry. */
2051 1.1 christos entry->u.s2.offset = arg->offset1[got_offset_size];
2052 1.1 christos arg->offset1[got_offset_size] += entry_size;
2053 1.1 christos
2054 1.1 christos if (entry->key_.bfd == NULL)
2055 1.1 christos /* Hook up this entry into the list of got_entries of H. */
2056 1.1 christos {
2057 1.1 christos struct elf_m68k_link_hash_entry *h;
2058 1.1 christos
2059 1.1 christos h = arg->symndx2h[entry->key_.symndx];
2060 1.1 christos if (h != NULL)
2061 1.1 christos {
2062 1.1 christos entry->u.s2.next = h->glist;
2063 1.1 christos h->glist = entry;
2064 1.1 christos }
2065 1.1 christos else
2066 1.1 christos /* This should be the entry for TLS_LDM relocation then. */
2067 1.1 christos {
2068 1.1 christos BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type)
2069 1.1 christos == R_68K_TLS_LDM32)
2070 1.1 christos && entry->key_.symndx == 0);
2071 1.1 christos
2072 1.1 christos ++arg->n_ldm_entries;
2073 1.1 christos }
2074 1.1 christos }
2075 1.1 christos else
2076 1.1 christos /* This entry is for local symbol. */
2077 1.1 christos entry->u.s2.next = NULL;
2078 1.1 christos
2079 1.1 christos return 1;
2080 1.1 christos }
2081 1.1 christos
2082 1.1 christos /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
2083 1.1 christos should use negative offsets.
2084 1.1 christos Build list of GOT entries for global symbols along the way.
2085 1.1 christos SYMNDX2H is mapping from global symbol indices to actual
2086 1.1 christos global symbols.
2087 1.1 christos Return offset at which next GOT should start. */
2088 1.1 christos
2089 1.1 christos static void
2090 1.1 christos elf_m68k_finalize_got_offsets (struct elf_m68k_got *got,
2091 1.1 christos bfd_boolean use_neg_got_offsets_p,
2092 1.1 christos struct elf_m68k_link_hash_entry **symndx2h,
2093 1.1 christos bfd_vma *final_offset, bfd_vma *n_ldm_entries)
2094 1.1 christos {
2095 1.1 christos struct elf_m68k_finalize_got_offsets_arg arg_;
2096 1.1 christos bfd_vma offset1_[2 * R_LAST];
2097 1.1 christos bfd_vma offset2_[2 * R_LAST];
2098 1.1 christos int i;
2099 1.1 christos bfd_vma start_offset;
2100 1.1 christos
2101 1.1 christos BFD_ASSERT (got->offset != (bfd_vma) -1);
2102 1.1 christos
2103 1.1 christos /* We set entry offsets relative to the .got section (and not the
2104 1.1 christos start of a particular GOT), so that we can use them in
2105 1.1 christos finish_dynamic_symbol without needing to know the GOT which they come
2106 1.1 christos from. */
2107 1.1 christos
2108 1.1 christos /* Put offset1 in the middle of offset1_, same for offset2. */
2109 1.1 christos arg_.offset1 = offset1_ + R_LAST;
2110 1.1 christos arg_.offset2 = offset2_ + R_LAST;
2111 1.1 christos
2112 1.1 christos start_offset = got->offset;
2113 1.1 christos
2114 1.1 christos if (use_neg_got_offsets_p)
2115 1.1 christos /* Setup both negative and positive ranges for R_8, R_16 and R_32. */
2116 1.1 christos i = -(int) R_32 - 1;
2117 1.1 christos else
2118 1.1 christos /* Setup positives ranges for R_8, R_16 and R_32. */
2119 1.1 christos i = (int) R_8;
2120 1.1 christos
2121 1.1 christos for (; i <= (int) R_32; ++i)
2122 1.1 christos {
2123 1.1 christos int j;
2124 1.1 christos size_t n;
2125 1.1 christos
2126 1.1 christos /* Set beginning of the range of offsets I. */
2127 1.1 christos arg_.offset1[i] = start_offset;
2128 1.1 christos
2129 1.1 christos /* Calculate number of slots that require I offsets. */
2130 1.1 christos j = (i >= 0) ? i : -i - 1;
2131 1.1 christos n = (j >= 1) ? got->n_slots[j - 1] : 0;
2132 1.1 christos n = got->n_slots[j] - n;
2133 1.1 christos
2134 1.1 christos if (use_neg_got_offsets_p && n != 0)
2135 1.1 christos {
2136 1.1 christos if (i < 0)
2137 1.1 christos /* We first fill the positive side of the range, so we might
2138 1.1 christos end up with one empty slot at that side when we can't fit
2139 1.1 christos whole 2-slot entry. Account for that at negative side of
2140 1.1 christos the interval with one additional entry. */
2141 1.1 christos n = n / 2 + 1;
2142 1.1 christos else
2143 1.1 christos /* When the number of slots is odd, make positive side of the
2144 1.1 christos range one entry bigger. */
2145 1.1 christos n = (n + 1) / 2;
2146 1.1 christos }
2147 1.1 christos
2148 1.1 christos /* N is the number of slots that require I offsets.
2149 1.1 christos Calculate length of the range for I offsets. */
2150 1.1 christos n = 4 * n;
2151 1.1 christos
2152 1.1 christos /* Set end of the range. */
2153 1.1 christos arg_.offset2[i] = start_offset + n;
2154 1.1 christos
2155 1.1 christos start_offset = arg_.offset2[i];
2156 1.1 christos }
2157 1.1 christos
2158 1.1 christos if (!use_neg_got_offsets_p)
2159 1.1 christos /* Make sure that if we try to switch to negative offsets in
2160 1.1 christos elf_m68k_finalize_got_offsets_1, the assert therein will catch
2161 1.1 christos the bug. */
2162 1.1 christos for (i = R_8; i <= R_32; ++i)
2163 1.1 christos arg_.offset2[-i - 1] = arg_.offset2[i];
2164 1.1 christos
2165 1.1 christos /* Setup got->offset. offset1[R_8] is either in the middle or at the
2166 1.1 christos beginning of GOT depending on use_neg_got_offsets_p. */
2167 1.1 christos got->offset = arg_.offset1[R_8];
2168 1.1 christos
2169 1.1 christos arg_.symndx2h = symndx2h;
2170 1.1 christos arg_.n_ldm_entries = 0;
2171 1.1 christos
2172 1.1 christos /* Assign offsets. */
2173 1.1 christos htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_);
2174 1.1 christos
2175 1.1 christos /* Check offset ranges we have actually assigned. */
2176 1.1 christos for (i = (int) R_8; i <= (int) R_32; ++i)
2177 1.1 christos BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4);
2178 1.1 christos
2179 1.1 christos *final_offset = start_offset;
2180 1.1 christos *n_ldm_entries = arg_.n_ldm_entries;
2181 1.1 christos }
2182 1.1 christos
2183 1.1 christos struct elf_m68k_partition_multi_got_arg
2184 1.1 christos {
2185 1.1 christos /* The GOT we are adding entries to. Aka big got. */
2186 1.1 christos struct elf_m68k_got *current_got;
2187 1.1 christos
2188 1.1 christos /* Offset to assign the next CURRENT_GOT. */
2189 1.1 christos bfd_vma offset;
2190 1.1 christos
2191 1.1 christos /* Context where memory should be allocated. */
2192 1.1 christos struct bfd_link_info *info;
2193 1.1 christos
2194 1.1 christos /* Total number of slots in the .got section.
2195 1.1 christos This is used to calculate size of the .got and .rela.got sections. */
2196 1.1 christos bfd_vma n_slots;
2197 1.1 christos
2198 1.1 christos /* Difference in numbers of allocated slots in the .got section
2199 1.1 christos and necessary relocations in the .rela.got section.
2200 1.1 christos This is used to calculate size of the .rela.got section. */
2201 1.1 christos bfd_vma slots_relas_diff;
2202 1.1 christos
2203 1.1 christos /* Error flag. */
2204 1.1 christos bfd_boolean error_p;
2205 1.1 christos
2206 1.1 christos /* Mapping from global symndx to global symbols.
2207 1.1 christos This is used to build lists of got entries for global symbols. */
2208 1.1 christos struct elf_m68k_link_hash_entry **symndx2h;
2209 1.1 christos };
2210 1.1 christos
2211 1.1 christos static void
2212 1.1 christos elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg)
2213 1.1 christos {
2214 1.1 christos bfd_vma n_ldm_entries;
2215 1.1 christos
2216 1.1 christos elf_m68k_finalize_got_offsets (arg->current_got,
2217 1.1 christos (elf_m68k_hash_table (arg->info)
2218 1.1 christos ->use_neg_got_offsets_p),
2219 1.1 christos arg->symndx2h,
2220 1.1 christos &arg->offset, &n_ldm_entries);
2221 1.1 christos
2222 1.1 christos arg->n_slots += arg->current_got->n_slots[R_32];
2223 1.1.1.6 christos
2224 1.1 christos if (!bfd_link_pic (arg->info))
2225 1.1 christos /* If we are generating a shared object, we need to
2226 1.1 christos output a R_68K_RELATIVE reloc so that the dynamic
2227 1.1 christos linker can adjust this GOT entry. Overwise we
2228 1.1 christos don't need space in .rela.got for local symbols. */
2229 1.1 christos arg->slots_relas_diff += arg->current_got->local_n_slots;
2230 1.1 christos
2231 1.1 christos /* @LDM relocations require a 2-slot GOT entry, but only
2232 1.1 christos one relocation. Account for that. */
2233 1.1 christos arg->slots_relas_diff += n_ldm_entries;
2234 1.1 christos
2235 1.1 christos BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots);
2236 1.1 christos }
2237 1.1 christos
2238 1.1 christos
2239 1.1 christos /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
2240 1.1 christos or start a new CURRENT_GOT. */
2241 1.1 christos
2242 1.1 christos static int
2243 1.1 christos elf_m68k_partition_multi_got_1 (void **_entry, void *_arg)
2244 1.1 christos {
2245 1.1 christos struct elf_m68k_bfd2got_entry *entry;
2246 1.1 christos struct elf_m68k_partition_multi_got_arg *arg;
2247 1.1 christos struct elf_m68k_got *got;
2248 1.1 christos struct elf_m68k_got diff_;
2249 1.1 christos struct elf_m68k_got *diff;
2250 1.1 christos
2251 1.1 christos entry = (struct elf_m68k_bfd2got_entry *) *_entry;
2252 1.1 christos arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2253 1.1 christos
2254 1.1 christos got = entry->got;
2255 1.1 christos BFD_ASSERT (got != NULL);
2256 1.1 christos BFD_ASSERT (got->offset == (bfd_vma) -1);
2257 1.1 christos
2258 1.1 christos diff = NULL;
2259 1.1 christos
2260 1.1 christos if (arg->current_got != NULL)
2261 1.1 christos /* Construct diff. */
2262 1.1 christos {
2263 1.1 christos diff = &diff_;
2264 1.1 christos elf_m68k_init_got (diff);
2265 1.1 christos
2266 1.1 christos if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff))
2267 1.1 christos {
2268 1.1 christos if (diff->offset == 0)
2269 1.1 christos /* Offset set to 0 in the diff_ indicates an error. */
2270 1.1 christos {
2271 1.1 christos arg->error_p = TRUE;
2272 1.1 christos goto final_return;
2273 1.1 christos }
2274 1.1 christos
2275 1.1 christos if (elf_m68k_hash_table (arg->info)->allow_multigot_p)
2276 1.1 christos {
2277 1.1 christos elf_m68k_clear_got (diff);
2278 1.1 christos /* Schedule to finish up current_got and start new one. */
2279 1.1 christos diff = NULL;
2280 1.1 christos }
2281 1.1 christos /* else
2282 1.1 christos Merge GOTs no matter what. If big GOT overflows,
2283 1.1 christos we'll fail in relocate_section due to truncated relocations.
2284 1.1 christos
2285 1.1 christos ??? May be fail earlier? E.g., in can_merge_gots. */
2286 1.1 christos }
2287 1.1 christos }
2288 1.1 christos else
2289 1.1 christos /* Diff of got against empty current_got is got itself. */
2290 1.1 christos {
2291 1.1 christos /* Create empty current_got to put subsequent GOTs to. */
2292 1.1 christos arg->current_got = elf_m68k_create_empty_got (arg->info);
2293 1.1 christos if (arg->current_got == NULL)
2294 1.1 christos {
2295 1.1 christos arg->error_p = TRUE;
2296 1.1 christos goto final_return;
2297 1.1 christos }
2298 1.1 christos
2299 1.1 christos arg->current_got->offset = arg->offset;
2300 1.1 christos
2301 1.1 christos diff = got;
2302 1.1 christos }
2303 1.1 christos
2304 1.1 christos if (diff != NULL)
2305 1.1 christos {
2306 1.1 christos if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info))
2307 1.1 christos {
2308 1.1 christos arg->error_p = TRUE;
2309 1.1 christos goto final_return;
2310 1.1 christos }
2311 1.1 christos
2312 1.1 christos /* Now we can free GOT. */
2313 1.1 christos elf_m68k_clear_got (got);
2314 1.1 christos
2315 1.1 christos entry->got = arg->current_got;
2316 1.1 christos }
2317 1.1 christos else
2318 1.1 christos {
2319 1.1 christos /* Finish up current_got. */
2320 1.1 christos elf_m68k_partition_multi_got_2 (arg);
2321 1.1 christos
2322 1.1 christos /* Schedule to start a new current_got. */
2323 1.1 christos arg->current_got = NULL;
2324 1.1 christos
2325 1.1 christos /* Retry. */
2326 1.1 christos if (!elf_m68k_partition_multi_got_1 (_entry, _arg))
2327 1.1 christos {
2328 1.1 christos BFD_ASSERT (arg->error_p);
2329 1.1 christos goto final_return;
2330 1.1 christos }
2331 1.1 christos }
2332 1.1 christos
2333 1.1 christos final_return:
2334 1.1 christos if (diff != NULL)
2335 1.1 christos elf_m68k_clear_got (diff);
2336 1.1.1.8 christos
2337 1.1 christos return !arg->error_p;
2338 1.1 christos }
2339 1.1 christos
2340 1.1 christos /* Helper function to build symndx2h mapping. */
2341 1.1 christos
2342 1.1 christos static bfd_boolean
2343 1.1 christos elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h,
2344 1.1 christos void *_arg)
2345 1.1 christos {
2346 1.1 christos struct elf_m68k_link_hash_entry *h;
2347 1.1 christos
2348 1.1 christos h = elf_m68k_hash_entry (_h);
2349 1.1 christos
2350 1.1 christos if (h->got_entry_key != 0)
2351 1.1 christos /* H has at least one entry in the GOT. */
2352 1.1 christos {
2353 1.1 christos struct elf_m68k_partition_multi_got_arg *arg;
2354 1.1 christos
2355 1.1 christos arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2356 1.1 christos
2357 1.1 christos BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL);
2358 1.1 christos arg->symndx2h[h->got_entry_key] = h;
2359 1.1 christos }
2360 1.1 christos
2361 1.1 christos return TRUE;
2362 1.1 christos }
2363 1.1 christos
2364 1.1 christos /* Merge GOTs of some BFDs, assign offsets to GOT entries and build
2365 1.1 christos lists of GOT entries for global symbols.
2366 1.1 christos Calculate sizes of .got and .rela.got sections. */
2367 1.1 christos
2368 1.1 christos static bfd_boolean
2369 1.1 christos elf_m68k_partition_multi_got (struct bfd_link_info *info)
2370 1.1 christos {
2371 1.1 christos struct elf_m68k_multi_got *multi_got;
2372 1.1 christos struct elf_m68k_partition_multi_got_arg arg_;
2373 1.1 christos
2374 1.1 christos multi_got = elf_m68k_multi_got (info);
2375 1.1 christos
2376 1.1 christos arg_.current_got = NULL;
2377 1.1 christos arg_.offset = 0;
2378 1.1 christos arg_.info = info;
2379 1.1 christos arg_.n_slots = 0;
2380 1.1 christos arg_.slots_relas_diff = 0;
2381 1.1 christos arg_.error_p = FALSE;
2382 1.1 christos
2383 1.1 christos if (multi_got->bfd2got != NULL)
2384 1.1 christos {
2385 1.1 christos /* Initialize symndx2h mapping. */
2386 1.1 christos {
2387 1.1 christos arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx
2388 1.1 christos * sizeof (*arg_.symndx2h));
2389 1.1 christos if (arg_.symndx2h == NULL)
2390 1.1 christos return FALSE;
2391 1.1 christos
2392 1.1 christos elf_link_hash_traverse (elf_hash_table (info),
2393 1.1 christos elf_m68k_init_symndx2h_1, &arg_);
2394 1.1 christos }
2395 1.1 christos
2396 1.1 christos /* Partition. */
2397 1.1 christos htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1,
2398 1.1 christos &arg_);
2399 1.1 christos if (arg_.error_p)
2400 1.1 christos {
2401 1.1 christos free (arg_.symndx2h);
2402 1.1 christos arg_.symndx2h = NULL;
2403 1.1 christos
2404 1.1 christos return FALSE;
2405 1.1 christos }
2406 1.1 christos
2407 1.1 christos /* Finish up last current_got. */
2408 1.1 christos elf_m68k_partition_multi_got_2 (&arg_);
2409 1.1 christos
2410 1.1 christos free (arg_.symndx2h);
2411 1.1 christos }
2412 1.1 christos
2413 1.1 christos if (elf_hash_table (info)->dynobj != NULL)
2414 1.1 christos /* Set sizes of .got and .rela.got sections. */
2415 1.1 christos {
2416 1.1 christos asection *s;
2417 1.1.1.7 christos
2418 1.1 christos s = elf_hash_table (info)->sgot;
2419 1.1 christos if (s != NULL)
2420 1.1 christos s->size = arg_.offset;
2421 1.1 christos else
2422 1.1 christos BFD_ASSERT (arg_.offset == 0);
2423 1.1 christos
2424 1.1 christos BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots);
2425 1.1 christos arg_.n_slots -= arg_.slots_relas_diff;
2426 1.1.1.7 christos
2427 1.1 christos s = elf_hash_table (info)->srelgot;
2428 1.1 christos if (s != NULL)
2429 1.1 christos s->size = arg_.n_slots * sizeof (Elf32_External_Rela);
2430 1.1 christos else
2431 1.1 christos BFD_ASSERT (arg_.n_slots == 0);
2432 1.1 christos }
2433 1.1 christos else
2434 1.1 christos BFD_ASSERT (multi_got->bfd2got == NULL);
2435 1.1 christos
2436 1.1 christos return TRUE;
2437 1.1 christos }
2438 1.1 christos
2439 1.1 christos /* Copy any information related to dynamic linking from a pre-existing
2440 1.1 christos symbol to a newly created symbol. Also called to copy flags and
2441 1.1 christos other back-end info to a weakdef, in which case the symbol is not
2442 1.1 christos newly created and plt/got refcounts and dynamic indices should not
2443 1.1 christos be copied. */
2444 1.1 christos
2445 1.1 christos static void
2446 1.1 christos elf_m68k_copy_indirect_symbol (struct bfd_link_info *info,
2447 1.1 christos struct elf_link_hash_entry *_dir,
2448 1.1 christos struct elf_link_hash_entry *_ind)
2449 1.1 christos {
2450 1.1 christos struct elf_m68k_link_hash_entry *dir;
2451 1.1 christos struct elf_m68k_link_hash_entry *ind;
2452 1.1 christos
2453 1.1 christos _bfd_elf_link_hash_copy_indirect (info, _dir, _ind);
2454 1.1 christos
2455 1.1 christos if (_ind->root.type != bfd_link_hash_indirect)
2456 1.1 christos return;
2457 1.1 christos
2458 1.1 christos dir = elf_m68k_hash_entry (_dir);
2459 1.1 christos ind = elf_m68k_hash_entry (_ind);
2460 1.1 christos
2461 1.1 christos /* Any absolute non-dynamic relocations against an indirect or weak
2462 1.1 christos definition will be against the target symbol. */
2463 1.1 christos _dir->non_got_ref |= _ind->non_got_ref;
2464 1.1 christos
2465 1.1 christos /* We might have a direct symbol already having entries in the GOTs.
2466 1.1 christos Update its key only in case indirect symbol has GOT entries and
2467 1.1 christos assert that both indirect and direct symbols don't have GOT entries
2468 1.1 christos at the same time. */
2469 1.1 christos if (ind->got_entry_key != 0)
2470 1.1 christos {
2471 1.1 christos BFD_ASSERT (dir->got_entry_key == 0);
2472 1.1 christos /* Assert that GOTs aren't partioned yet. */
2473 1.1 christos BFD_ASSERT (ind->glist == NULL);
2474 1.1 christos
2475 1.1 christos dir->got_entry_key = ind->got_entry_key;
2476 1.1 christos ind->got_entry_key = 0;
2477 1.1 christos }
2478 1.1 christos }
2479 1.1 christos
2480 1.1 christos /* Look through the relocs for a section during the first phase, and
2481 1.1 christos allocate space in the global offset table or procedure linkage
2482 1.1 christos table. */
2483 1.1 christos
2484 1.1.1.2 christos static bfd_boolean
2485 1.1.1.2 christos elf_m68k_check_relocs (bfd *abfd,
2486 1.1.1.2 christos struct bfd_link_info *info,
2487 1.1.1.2 christos asection *sec,
2488 1.1 christos const Elf_Internal_Rela *relocs)
2489 1.1 christos {
2490 1.1 christos bfd *dynobj;
2491 1.1 christos Elf_Internal_Shdr *symtab_hdr;
2492 1.1 christos struct elf_link_hash_entry **sym_hashes;
2493 1.1 christos const Elf_Internal_Rela *rel;
2494 1.1 christos const Elf_Internal_Rela *rel_end;
2495 1.1 christos asection *sreloc;
2496 1.1 christos struct elf_m68k_got *got;
2497 1.1.1.6 christos
2498 1.1 christos if (bfd_link_relocatable (info))
2499 1.1 christos return TRUE;
2500 1.1 christos
2501 1.1 christos dynobj = elf_hash_table (info)->dynobj;
2502 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2503 1.1 christos sym_hashes = elf_sym_hashes (abfd);
2504 1.1 christos
2505 1.1 christos sreloc = NULL;
2506 1.1 christos
2507 1.1 christos got = NULL;
2508 1.1 christos
2509 1.1 christos rel_end = relocs + sec->reloc_count;
2510 1.1 christos for (rel = relocs; rel < rel_end; rel++)
2511 1.1 christos {
2512 1.1 christos unsigned long r_symndx;
2513 1.1 christos struct elf_link_hash_entry *h;
2514 1.1 christos
2515 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
2516 1.1 christos
2517 1.1 christos if (r_symndx < symtab_hdr->sh_info)
2518 1.1 christos h = NULL;
2519 1.1 christos else
2520 1.1 christos {
2521 1.1 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2522 1.1 christos while (h->root.type == bfd_link_hash_indirect
2523 1.1 christos || h->root.type == bfd_link_hash_warning)
2524 1.1 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2525 1.1 christos }
2526 1.1 christos
2527 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
2528 1.1 christos {
2529 1.1 christos case R_68K_GOT8:
2530 1.1 christos case R_68K_GOT16:
2531 1.1 christos case R_68K_GOT32:
2532 1.1 christos if (h != NULL
2533 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2534 1.1 christos break;
2535 1.1 christos /* Fall through. */
2536 1.1 christos
2537 1.1 christos /* Relative GOT relocations. */
2538 1.1 christos case R_68K_GOT8O:
2539 1.1 christos case R_68K_GOT16O:
2540 1.1 christos case R_68K_GOT32O:
2541 1.1 christos /* Fall through. */
2542 1.1 christos
2543 1.1 christos /* TLS relocations. */
2544 1.1 christos case R_68K_TLS_GD8:
2545 1.1 christos case R_68K_TLS_GD16:
2546 1.1 christos case R_68K_TLS_GD32:
2547 1.1 christos case R_68K_TLS_LDM8:
2548 1.1 christos case R_68K_TLS_LDM16:
2549 1.1 christos case R_68K_TLS_LDM32:
2550 1.1 christos case R_68K_TLS_IE8:
2551 1.1 christos case R_68K_TLS_IE16:
2552 1.1 christos case R_68K_TLS_IE32:
2553 1.1 christos
2554 1.1 christos case R_68K_TLS_TPREL32:
2555 1.1 christos case R_68K_TLS_DTPREL32:
2556 1.1 christos
2557 1.1.1.6 christos if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32
2558 1.1 christos && bfd_link_pic (info))
2559 1.1 christos /* Do the special chorus for libraries with static TLS. */
2560 1.1 christos info->flags |= DF_STATIC_TLS;
2561 1.1 christos
2562 1.1 christos /* This symbol requires a global offset table entry. */
2563 1.1 christos
2564 1.1 christos if (dynobj == NULL)
2565 1.1 christos {
2566 1.1 christos /* Create the .got section. */
2567 1.1 christos elf_hash_table (info)->dynobj = dynobj = abfd;
2568 1.1 christos if (!_bfd_elf_create_got_section (dynobj, info))
2569 1.1 christos return FALSE;
2570 1.1 christos }
2571 1.1 christos
2572 1.1 christos if (got == NULL)
2573 1.1 christos {
2574 1.1 christos struct elf_m68k_bfd2got_entry *bfd2got_entry;
2575 1.1 christos
2576 1.1 christos bfd2got_entry
2577 1.1 christos = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2578 1.1 christos abfd, FIND_OR_CREATE, info);
2579 1.1 christos if (bfd2got_entry == NULL)
2580 1.1 christos return FALSE;
2581 1.1 christos
2582 1.1 christos got = bfd2got_entry->got;
2583 1.1 christos BFD_ASSERT (got != NULL);
2584 1.1 christos }
2585 1.1 christos
2586 1.1 christos {
2587 1.1 christos struct elf_m68k_got_entry *got_entry;
2588 1.1 christos
2589 1.1 christos /* Add entry to got. */
2590 1.1 christos got_entry = elf_m68k_add_entry_to_got (got, h, abfd,
2591 1.1 christos ELF32_R_TYPE (rel->r_info),
2592 1.1 christos r_symndx, info);
2593 1.1 christos if (got_entry == NULL)
2594 1.1 christos return FALSE;
2595 1.1 christos
2596 1.1 christos if (got_entry->u.s1.refcount == 1)
2597 1.1 christos {
2598 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
2599 1.1 christos if (h != NULL
2600 1.1 christos && h->dynindx == -1
2601 1.1 christos && !h->forced_local)
2602 1.1 christos {
2603 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, h))
2604 1.1 christos return FALSE;
2605 1.1 christos }
2606 1.1 christos }
2607 1.1 christos }
2608 1.1 christos
2609 1.1 christos break;
2610 1.1 christos
2611 1.1 christos case R_68K_PLT8:
2612 1.1 christos case R_68K_PLT16:
2613 1.1 christos case R_68K_PLT32:
2614 1.1 christos /* This symbol requires a procedure linkage table entry. We
2615 1.1.1.8 christos actually build the entry in adjust_dynamic_symbol,
2616 1.1.1.8 christos because this might be a case of linking PIC code which is
2617 1.1.1.8 christos never referenced by a dynamic object, in which case we
2618 1.1.1.8 christos don't need to generate a procedure linkage table entry
2619 1.1 christos after all. */
2620 1.1 christos
2621 1.1 christos /* If this is a local symbol, we resolve it directly without
2622 1.1 christos creating a procedure linkage table entry. */
2623 1.1 christos if (h == NULL)
2624 1.1 christos continue;
2625 1.1 christos
2626 1.1 christos h->needs_plt = 1;
2627 1.1 christos h->plt.refcount++;
2628 1.1 christos break;
2629 1.1 christos
2630 1.1 christos case R_68K_PLT8O:
2631 1.1 christos case R_68K_PLT16O:
2632 1.1 christos case R_68K_PLT32O:
2633 1.1 christos /* This symbol requires a procedure linkage table entry. */
2634 1.1 christos
2635 1.1 christos if (h == NULL)
2636 1.1 christos {
2637 1.1 christos /* It does not make sense to have this relocation for a
2638 1.1 christos local symbol. FIXME: does it? How to handle it if
2639 1.1 christos it does make sense? */
2640 1.1 christos bfd_set_error (bfd_error_bad_value);
2641 1.1 christos return FALSE;
2642 1.1 christos }
2643 1.1 christos
2644 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
2645 1.1 christos if (h->dynindx == -1
2646 1.1 christos && !h->forced_local)
2647 1.1 christos {
2648 1.1 christos if (!bfd_elf_link_record_dynamic_symbol (info, h))
2649 1.1 christos return FALSE;
2650 1.1 christos }
2651 1.1 christos
2652 1.1 christos h->needs_plt = 1;
2653 1.1 christos h->plt.refcount++;
2654 1.1 christos break;
2655 1.1 christos
2656 1.1 christos case R_68K_PC8:
2657 1.1 christos case R_68K_PC16:
2658 1.1 christos case R_68K_PC32:
2659 1.1 christos /* If we are creating a shared library and this is not a local
2660 1.1 christos symbol, we need to copy the reloc into the shared library.
2661 1.1 christos However when linking with -Bsymbolic and this is a global
2662 1.1 christos symbol which is defined in an object we are including in the
2663 1.1 christos link (i.e., DEF_REGULAR is set), then we can resolve the
2664 1.1 christos reloc directly. At this point we have not seen all the input
2665 1.1 christos files, so it is possible that DEF_REGULAR is not set now but
2666 1.1 christos will be set later (it is never cleared). We account for that
2667 1.1 christos possibility below by storing information in the
2668 1.1.1.6 christos pcrel_relocs_copied field of the hash table entry. */
2669 1.1 christos if (!(bfd_link_pic (info)
2670 1.1 christos && (sec->flags & SEC_ALLOC) != 0
2671 1.1.1.6 christos && h != NULL
2672 1.1 christos && (!SYMBOLIC_BIND (info, h)
2673 1.1 christos || h->root.type == bfd_link_hash_defweak
2674 1.1 christos || !h->def_regular)))
2675 1.1 christos {
2676 1.1 christos if (h != NULL)
2677 1.1 christos {
2678 1.1 christos /* Make sure a plt entry is created for this symbol if
2679 1.1 christos it turns out to be a function defined by a dynamic
2680 1.1 christos object. */
2681 1.1 christos h->plt.refcount++;
2682 1.1 christos }
2683 1.1 christos break;
2684 1.1 christos }
2685 1.1 christos /* Fall through. */
2686 1.1 christos case R_68K_8:
2687 1.1 christos case R_68K_16:
2688 1.1.1.2 christos case R_68K_32:
2689 1.1.1.2 christos /* We don't need to handle relocs into sections not going into
2690 1.1.1.2 christos the "real" output. */
2691 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
2692 1.1.1.2 christos break;
2693 1.1 christos
2694 1.1 christos if (h != NULL)
2695 1.1 christos {
2696 1.1 christos /* Make sure a plt entry is created for this symbol if it
2697 1.1 christos turns out to be a function defined by a dynamic object. */
2698 1.1 christos h->plt.refcount++;
2699 1.1.1.6 christos
2700 1.1 christos if (bfd_link_executable (info))
2701 1.1 christos /* This symbol needs a non-GOT reference. */
2702 1.1 christos h->non_got_ref = 1;
2703 1.1 christos }
2704 1.1 christos
2705 1.1 christos /* If we are creating a shared library, we need to copy the
2706 1.1.1.8 christos reloc into the shared library. */
2707 1.1.1.8 christos if (bfd_link_pic (info)
2708 1.1.1.8 christos && (h == NULL
2709 1.1 christos || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
2710 1.1 christos {
2711 1.1 christos /* When creating a shared object, we must copy these
2712 1.1 christos reloc types into the output file. We create a reloc
2713 1.1 christos section in dynobj and make room for this reloc. */
2714 1.1 christos if (sreloc == NULL)
2715 1.1 christos {
2716 1.1 christos sreloc = _bfd_elf_make_dynamic_reloc_section
2717 1.1 christos (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
2718 1.1 christos
2719 1.1 christos if (sreloc == NULL)
2720 1.1 christos return FALSE;
2721 1.1 christos }
2722 1.1 christos
2723 1.1 christos if (sec->flags & SEC_READONLY
2724 1.1 christos /* Don't set DF_TEXTREL yet for PC relative
2725 1.1 christos relocations, they might be discarded later. */
2726 1.1 christos && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2727 1.1 christos || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2728 1.1 christos || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
2729 1.1 christos info->flags |= DF_TEXTREL;
2730 1.1 christos
2731 1.1 christos sreloc->size += sizeof (Elf32_External_Rela);
2732 1.1 christos
2733 1.1 christos /* We count the number of PC relative relocations we have
2734 1.1 christos entered for this symbol, so that we can discard them
2735 1.1 christos again if, in the -Bsymbolic case, the symbol is later
2736 1.1 christos defined by a regular object, or, in the normal shared
2737 1.1 christos case, the symbol is forced to be local. Note that this
2738 1.1 christos function is only called if we are using an m68kelf linker
2739 1.1 christos hash table, which means that h is really a pointer to an
2740 1.1 christos elf_m68k_link_hash_entry. */
2741 1.1 christos if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2742 1.1 christos || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2743 1.1 christos || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
2744 1.1 christos {
2745 1.1 christos struct elf_m68k_pcrel_relocs_copied *p;
2746 1.1 christos struct elf_m68k_pcrel_relocs_copied **head;
2747 1.1 christos
2748 1.1 christos if (h != NULL)
2749 1.1 christos {
2750 1.1 christos struct elf_m68k_link_hash_entry *eh
2751 1.1 christos = elf_m68k_hash_entry (h);
2752 1.1 christos head = &eh->pcrel_relocs_copied;
2753 1.1 christos }
2754 1.1 christos else
2755 1.1 christos {
2756 1.1 christos asection *s;
2757 1.1 christos void *vpp;
2758 1.1 christos Elf_Internal_Sym *isym;
2759 1.1 christos
2760 1.1 christos isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache,
2761 1.1 christos abfd, r_symndx);
2762 1.1 christos if (isym == NULL)
2763 1.1 christos return FALSE;
2764 1.1 christos
2765 1.1 christos s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2766 1.1 christos if (s == NULL)
2767 1.1 christos s = sec;
2768 1.1 christos
2769 1.1 christos vpp = &elf_section_data (s)->local_dynrel;
2770 1.1 christos head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
2771 1.1 christos }
2772 1.1 christos
2773 1.1 christos for (p = *head; p != NULL; p = p->next)
2774 1.1 christos if (p->section == sreloc)
2775 1.1 christos break;
2776 1.1 christos
2777 1.1 christos if (p == NULL)
2778 1.1 christos {
2779 1.1 christos p = ((struct elf_m68k_pcrel_relocs_copied *)
2780 1.1 christos bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
2781 1.1 christos if (p == NULL)
2782 1.1 christos return FALSE;
2783 1.1 christos p->next = *head;
2784 1.1 christos *head = p;
2785 1.1 christos p->section = sreloc;
2786 1.1 christos p->count = 0;
2787 1.1 christos }
2788 1.1 christos
2789 1.1 christos ++p->count;
2790 1.1 christos }
2791 1.1 christos }
2792 1.1 christos
2793 1.1 christos break;
2794 1.1 christos
2795 1.1 christos /* This relocation describes the C++ object vtable hierarchy.
2796 1.1 christos Reconstruct it for later use during GC. */
2797 1.1 christos case R_68K_GNU_VTINHERIT:
2798 1.1 christos if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2799 1.1 christos return FALSE;
2800 1.1 christos break;
2801 1.1 christos
2802 1.1 christos /* This relocation describes which C++ vtable entries are actually
2803 1.1 christos used. Record for later use during GC. */
2804 1.1 christos case R_68K_GNU_VTENTRY:
2805 1.1 christos BFD_ASSERT (h != NULL);
2806 1.1 christos if (h != NULL
2807 1.1 christos && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2808 1.1 christos return FALSE;
2809 1.1 christos break;
2810 1.1 christos
2811 1.1 christos default:
2812 1.1 christos break;
2813 1.1 christos }
2814 1.1 christos }
2815 1.1 christos
2816 1.1 christos return TRUE;
2817 1.1 christos }
2818 1.1 christos
2819 1.1 christos /* Return the section that should be marked against GC for a given
2820 1.1 christos relocation. */
2821 1.1 christos
2822 1.1 christos static asection *
2823 1.1 christos elf_m68k_gc_mark_hook (asection *sec,
2824 1.1 christos struct bfd_link_info *info,
2825 1.1 christos Elf_Internal_Rela *rel,
2826 1.1 christos struct elf_link_hash_entry *h,
2827 1.1 christos Elf_Internal_Sym *sym)
2828 1.1 christos {
2829 1.1 christos if (h != NULL)
2830 1.1 christos switch (ELF32_R_TYPE (rel->r_info))
2831 1.1 christos {
2832 1.1 christos case R_68K_GNU_VTINHERIT:
2833 1.1 christos case R_68K_GNU_VTENTRY:
2834 1.1 christos return NULL;
2835 1.1 christos }
2836 1.1 christos
2837 1.1 christos return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2838 1.1 christos }
2839 1.1 christos
2840 1.1 christos /* Return the type of PLT associated with OUTPUT_BFD. */
2842 1.1 christos
2843 1.1 christos static const struct elf_m68k_plt_info *
2844 1.1 christos elf_m68k_get_plt_info (bfd *output_bfd)
2845 1.1 christos {
2846 1.1 christos unsigned int features;
2847 1.1 christos
2848 1.1 christos features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
2849 1.1 christos if (features & cpu32)
2850 1.1 christos return &elf_cpu32_plt_info;
2851 1.1 christos if (features & mcfisa_b)
2852 1.1 christos return &elf_isab_plt_info;
2853 1.1 christos if (features & mcfisa_c)
2854 1.1 christos return &elf_isac_plt_info;
2855 1.1 christos return &elf_m68k_plt_info;
2856 1.1 christos }
2857 1.1 christos
2858 1.1 christos /* This function is called after all the input files have been read,
2859 1.1 christos and the input sections have been assigned to output sections.
2860 1.1 christos It's a convenient place to determine the PLT style. */
2861 1.1 christos
2862 1.1 christos static bfd_boolean
2863 1.1 christos elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2864 1.1 christos {
2865 1.1 christos /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
2866 1.1 christos sections. */
2867 1.1 christos if (!elf_m68k_partition_multi_got (info))
2868 1.1 christos return FALSE;
2869 1.1 christos
2870 1.1 christos elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
2871 1.1 christos return TRUE;
2872 1.1 christos }
2873 1.1 christos
2874 1.1 christos /* Adjust a symbol defined by a dynamic object and referenced by a
2875 1.1 christos regular object. The current definition is in some section of the
2876 1.1 christos dynamic object, but we're not including those sections. We have to
2877 1.1 christos change the definition to something the rest of the link can
2878 1.1 christos understand. */
2879 1.1.1.2 christos
2880 1.1.1.2 christos static bfd_boolean
2881 1.1 christos elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info,
2882 1.1 christos struct elf_link_hash_entry *h)
2883 1.1 christos {
2884 1.1 christos struct elf_m68k_link_hash_table *htab;
2885 1.1 christos bfd *dynobj;
2886 1.1 christos asection *s;
2887 1.1.1.7 christos
2888 1.1 christos htab = elf_m68k_hash_table (info);
2889 1.1 christos dynobj = htab->root.dynobj;
2890 1.1 christos
2891 1.1 christos /* Make sure we know what is going on here. */
2892 1.1.1.8 christos BFD_ASSERT (dynobj != NULL
2893 1.1 christos && (h->needs_plt
2894 1.1 christos || h->is_weakalias
2895 1.1 christos || (h->def_dynamic
2896 1.1 christos && h->ref_regular
2897 1.1 christos && !h->def_regular)));
2898 1.1 christos
2899 1.1 christos /* If this is a function, put it in the procedure linkage table. We
2900 1.1 christos will fill in the contents of the procedure linkage table later,
2901 1.1 christos when we know the address of the .got section. */
2902 1.1 christos if (h->type == STT_FUNC
2903 1.1 christos || h->needs_plt)
2904 1.1.1.8 christos {
2905 1.1.1.8 christos if ((h->plt.refcount <= 0
2906 1.1.1.8 christos || SYMBOL_CALLS_LOCAL (info, h)
2907 1.1 christos || ((ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2908 1.1 christos || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2909 1.1 christos && h->root.type == bfd_link_hash_undefweak))
2910 1.1 christos /* We must always create the plt entry if it was referenced
2911 1.1 christos by a PLTxxO relocation. In this case we already recorded
2912 1.1 christos it as a dynamic symbol. */
2913 1.1 christos && h->dynindx == -1)
2914 1.1 christos {
2915 1.1 christos /* This case can occur if we saw a PLTxx reloc in an input
2916 1.1 christos file, but the symbol was never referred to by a dynamic
2917 1.1 christos object, or if all references were garbage collected. In
2918 1.1 christos such a case, we don't actually need to build a procedure
2919 1.1 christos linkage table, and we can just do a PCxx reloc instead. */
2920 1.1 christos h->plt.offset = (bfd_vma) -1;
2921 1.1 christos h->needs_plt = 0;
2922 1.1 christos return TRUE;
2923 1.1 christos }
2924 1.1 christos
2925 1.1 christos /* Make sure this symbol is output as a dynamic symbol. */
2926 1.1 christos if (h->dynindx == -1
2927 1.1 christos && !h->forced_local)
2928 1.1 christos {
2929 1.1 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
2930 1.1 christos return FALSE;
2931 1.1.1.7 christos }
2932 1.1 christos
2933 1.1 christos s = htab->root.splt;
2934 1.1 christos BFD_ASSERT (s != NULL);
2935 1.1 christos
2936 1.1 christos /* If this is the first .plt entry, make room for the special
2937 1.1 christos first entry. */
2938 1.1 christos if (s->size == 0)
2939 1.1 christos s->size = htab->plt_info->size;
2940 1.1 christos
2941 1.1 christos /* If this symbol is not defined in a regular file, and we are
2942 1.1 christos not generating a shared library, then set the symbol to this
2943 1.1 christos location in the .plt. This is required to make function
2944 1.1.1.6 christos pointers compare as equal between the normal executable and
2945 1.1 christos the shared library. */
2946 1.1 christos if (!bfd_link_pic (info)
2947 1.1 christos && !h->def_regular)
2948 1.1 christos {
2949 1.1 christos h->root.u.def.section = s;
2950 1.1 christos h->root.u.def.value = s->size;
2951 1.1 christos }
2952 1.1 christos
2953 1.1 christos h->plt.offset = s->size;
2954 1.1 christos
2955 1.1 christos /* Make room for this entry. */
2956 1.1 christos s->size += htab->plt_info->size;
2957 1.1 christos
2958 1.1.1.7 christos /* We also need to make an entry in the .got.plt section, which
2959 1.1 christos will be placed in the .got section by the linker script. */
2960 1.1 christos s = htab->root.sgotplt;
2961 1.1 christos BFD_ASSERT (s != NULL);
2962 1.1 christos s->size += 4;
2963 1.1.1.7 christos
2964 1.1 christos /* We also need to make an entry in the .rela.plt section. */
2965 1.1 christos s = htab->root.srelplt;
2966 1.1 christos BFD_ASSERT (s != NULL);
2967 1.1 christos s->size += sizeof (Elf32_External_Rela);
2968 1.1 christos
2969 1.1 christos return TRUE;
2970 1.1 christos }
2971 1.1 christos
2972 1.1 christos /* Reinitialize the plt offset now that it is not used as a reference
2973 1.1 christos count any more. */
2974 1.1 christos h->plt.offset = (bfd_vma) -1;
2975 1.1 christos
2976 1.1 christos /* If this is a weak symbol, and there is a real definition, the
2977 1.1.1.8 christos processor independent code will have arranged for us to see the
2978 1.1 christos real definition first, and we can just use the same value. */
2979 1.1.1.8 christos if (h->is_weakalias)
2980 1.1.1.8 christos {
2981 1.1.1.8 christos struct elf_link_hash_entry *def = weakdef (h);
2982 1.1.1.8 christos BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2983 1.1 christos h->root.u.def.section = def->root.u.def.section;
2984 1.1 christos h->root.u.def.value = def->root.u.def.value;
2985 1.1 christos return TRUE;
2986 1.1 christos }
2987 1.1 christos
2988 1.1 christos /* This is a reference to a symbol defined by a dynamic object which
2989 1.1 christos is not a function. */
2990 1.1 christos
2991 1.1 christos /* If we are creating a shared library, we must presume that the
2992 1.1 christos only references to the symbol are via the global offset table.
2993 1.1.1.6 christos For such cases we need not do anything here; the relocations will
2994 1.1 christos be handled correctly by relocate_section. */
2995 1.1 christos if (bfd_link_pic (info))
2996 1.1 christos return TRUE;
2997 1.1 christos
2998 1.1 christos /* If there are no references to this symbol that do not use the
2999 1.1 christos GOT, we don't need to generate a copy reloc. */
3000 1.1 christos if (!h->non_got_ref)
3001 1.1 christos return TRUE;
3002 1.1 christos
3003 1.1 christos /* We must allocate the symbol in our .dynbss section, which will
3004 1.1 christos become part of the .bss section of the executable. There will be
3005 1.1 christos an entry for this symbol in the .dynsym section. The dynamic
3006 1.1 christos object will contain position independent code, so all references
3007 1.1 christos from the dynamic object to this symbol will go through the global
3008 1.1 christos offset table. The dynamic linker will use the .dynsym entry to
3009 1.1 christos determine the address it must put in the global offset table, so
3010 1.1 christos both the dynamic object and the regular object will refer to the
3011 1.1.1.2 christos same memory location for the variable. */
3012 1.1 christos
3013 1.1 christos s = bfd_get_linker_section (dynobj, ".dynbss");
3014 1.1 christos BFD_ASSERT (s != NULL);
3015 1.1 christos
3016 1.1 christos /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
3017 1.1 christos copy the initial value out of the dynamic object and into the
3018 1.1.1.2 christos runtime process image. We need to remember the offset into the
3019 1.1 christos .rela.bss section we are going to use. */
3020 1.1 christos if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3021 1.1 christos {
3022 1.1.1.2 christos asection *srel;
3023 1.1 christos
3024 1.1 christos srel = bfd_get_linker_section (dynobj, ".rela.bss");
3025 1.1 christos BFD_ASSERT (srel != NULL);
3026 1.1 christos srel->size += sizeof (Elf32_External_Rela);
3027 1.1 christos h->needs_copy = 1;
3028 1.1.1.4 christos }
3029 1.1 christos
3030 1.1 christos return _bfd_elf_adjust_dynamic_copy (info, h, s);
3031 1.1 christos }
3032 1.1 christos
3033 1.1 christos /* Set the sizes of the dynamic sections. */
3034 1.1.1.2 christos
3035 1.1.1.2 christos static bfd_boolean
3036 1.1 christos elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3037 1.1 christos struct bfd_link_info *info)
3038 1.1 christos {
3039 1.1 christos bfd *dynobj;
3040 1.1 christos asection *s;
3041 1.1 christos bfd_boolean plt;
3042 1.1 christos bfd_boolean relocs;
3043 1.1 christos
3044 1.1 christos dynobj = elf_hash_table (info)->dynobj;
3045 1.1 christos BFD_ASSERT (dynobj != NULL);
3046 1.1 christos
3047 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
3048 1.1.1.6 christos {
3049 1.1 christos /* Set the contents of the .interp section to the interpreter. */
3050 1.1.1.2 christos if (bfd_link_executable (info) && !info->nointerp)
3051 1.1 christos {
3052 1.1 christos s = bfd_get_linker_section (dynobj, ".interp");
3053 1.1 christos BFD_ASSERT (s != NULL);
3054 1.1 christos s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3055 1.1 christos s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3056 1.1 christos }
3057 1.1 christos }
3058 1.1 christos else
3059 1.1 christos {
3060 1.1 christos /* We may have created entries in the .rela.got section.
3061 1.1 christos However, if we are not creating the dynamic sections, we will
3062 1.1 christos not actually use these entries. Reset the size of .rela.got,
3063 1.1.1.7 christos which will cause it to get stripped from the output file
3064 1.1 christos below. */
3065 1.1 christos s = elf_hash_table (info)->srelgot;
3066 1.1 christos if (s != NULL)
3067 1.1 christos s->size = 0;
3068 1.1 christos }
3069 1.1 christos
3070 1.1 christos /* If this is a -Bsymbolic shared link, then we need to discard all
3071 1.1 christos PC relative relocs against symbols defined in a regular object.
3072 1.1 christos For the normal shared case we discard the PC relative relocs
3073 1.1 christos against symbols that have become local due to visibility changes.
3074 1.1.1.6 christos We allocated space for them in the check_relocs routine, but we
3075 1.1 christos will not fill them in in the relocate_section routine. */
3076 1.1 christos if (bfd_link_pic (info))
3077 1.1.1.2 christos elf_link_hash_traverse (elf_hash_table (info),
3078 1.1 christos elf_m68k_discard_copies,
3079 1.1 christos info);
3080 1.1 christos
3081 1.1 christos /* The check_relocs and adjust_dynamic_symbol entry points have
3082 1.1 christos determined the sizes of the various dynamic sections. Allocate
3083 1.1 christos memory for them. */
3084 1.1 christos plt = FALSE;
3085 1.1 christos relocs = FALSE;
3086 1.1 christos for (s = dynobj->sections; s != NULL; s = s->next)
3087 1.1 christos {
3088 1.1 christos const char *name;
3089 1.1 christos
3090 1.1 christos if ((s->flags & SEC_LINKER_CREATED) == 0)
3091 1.1 christos continue;
3092 1.1 christos
3093 1.1 christos /* It's OK to base decisions on the section name, because none
3094 1.1 christos of the dynobj section names depend upon the input files. */
3095 1.1 christos name = bfd_get_section_name (dynobj, s);
3096 1.1 christos
3097 1.1 christos if (strcmp (name, ".plt") == 0)
3098 1.1 christos {
3099 1.1 christos /* Remember whether there is a PLT. */
3100 1.1 christos plt = s->size != 0;
3101 1.1 christos }
3102 1.1 christos else if (CONST_STRNEQ (name, ".rela"))
3103 1.1 christos {
3104 1.1 christos if (s->size != 0)
3105 1.1 christos {
3106 1.1 christos relocs = TRUE;
3107 1.1 christos
3108 1.1 christos /* We use the reloc_count field as a counter if we need
3109 1.1 christos to copy relocs into the output file. */
3110 1.1 christos s->reloc_count = 0;
3111 1.1 christos }
3112 1.1 christos }
3113 1.1 christos else if (! CONST_STRNEQ (name, ".got")
3114 1.1 christos && strcmp (name, ".dynbss") != 0)
3115 1.1 christos {
3116 1.1 christos /* It's not one of our sections, so don't allocate space. */
3117 1.1 christos continue;
3118 1.1 christos }
3119 1.1 christos
3120 1.1 christos if (s->size == 0)
3121 1.1 christos {
3122 1.1 christos /* If we don't need this section, strip it from the
3123 1.1 christos output file. This is mostly to handle .rela.bss and
3124 1.1 christos .rela.plt. We must create both sections in
3125 1.1 christos create_dynamic_sections, because they must be created
3126 1.1 christos before the linker maps input sections to output
3127 1.1 christos sections. The linker does that before
3128 1.1 christos adjust_dynamic_symbol is called, and it is that
3129 1.1 christos function which decides whether anything needs to go
3130 1.1 christos into these sections. */
3131 1.1 christos s->flags |= SEC_EXCLUDE;
3132 1.1 christos continue;
3133 1.1 christos }
3134 1.1 christos
3135 1.1 christos if ((s->flags & SEC_HAS_CONTENTS) == 0)
3136 1.1 christos continue;
3137 1.1 christos
3138 1.1 christos /* Allocate memory for the section contents. */
3139 1.1 christos /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3140 1.1 christos Unused entries should be reclaimed before the section's contents
3141 1.1 christos are written out, but at the moment this does not happen. Thus in
3142 1.1 christos order to prevent writing out garbage, we initialise the section's
3143 1.1 christos contents to zero. */
3144 1.1 christos s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3145 1.1 christos if (s->contents == NULL)
3146 1.1 christos return FALSE;
3147 1.1 christos }
3148 1.1 christos
3149 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
3150 1.1 christos {
3151 1.1 christos /* Add some entries to the .dynamic section. We fill in the
3152 1.1 christos values later, in elf_m68k_finish_dynamic_sections, but we
3153 1.1 christos must add the entries now so that we get the correct size for
3154 1.1 christos the .dynamic section. The DT_DEBUG entry is filled in by the
3155 1.1 christos dynamic linker and used by the debugger. */
3156 1.1 christos #define add_dynamic_entry(TAG, VAL) \
3157 1.1.1.6 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3158 1.1 christos
3159 1.1 christos if (bfd_link_executable (info))
3160 1.1 christos {
3161 1.1 christos if (!add_dynamic_entry (DT_DEBUG, 0))
3162 1.1 christos return FALSE;
3163 1.1 christos }
3164 1.1 christos
3165 1.1 christos if (plt)
3166 1.1 christos {
3167 1.1 christos if (!add_dynamic_entry (DT_PLTGOT, 0)
3168 1.1 christos || !add_dynamic_entry (DT_PLTRELSZ, 0)
3169 1.1 christos || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3170 1.1 christos || !add_dynamic_entry (DT_JMPREL, 0))
3171 1.1 christos return FALSE;
3172 1.1 christos }
3173 1.1 christos
3174 1.1 christos if (relocs)
3175 1.1 christos {
3176 1.1 christos if (!add_dynamic_entry (DT_RELA, 0)
3177 1.1 christos || !add_dynamic_entry (DT_RELASZ, 0)
3178 1.1 christos || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3179 1.1 christos return FALSE;
3180 1.1 christos }
3181 1.1 christos
3182 1.1 christos if ((info->flags & DF_TEXTREL) != 0)
3183 1.1 christos {
3184 1.1 christos if (!add_dynamic_entry (DT_TEXTREL, 0))
3185 1.1 christos return FALSE;
3186 1.1 christos }
3187 1.1 christos }
3188 1.1 christos #undef add_dynamic_entry
3189 1.1 christos
3190 1.1 christos return TRUE;
3191 1.1 christos }
3192 1.1 christos
3193 1.1 christos /* This function is called via elf_link_hash_traverse if we are
3194 1.1 christos creating a shared object. In the -Bsymbolic case it discards the
3195 1.1 christos space allocated to copy PC relative relocs against symbols which
3196 1.1 christos are defined in regular objects. For the normal shared case, it
3197 1.1 christos discards space for pc-relative relocs that have become local due to
3198 1.1 christos symbol visibility changes. We allocated space for them in the
3199 1.1 christos check_relocs routine, but we won't fill them in in the
3200 1.1 christos relocate_section routine.
3201 1.1 christos
3202 1.1 christos We also check whether any of the remaining relocations apply
3203 1.1 christos against a readonly section, and set the DF_TEXTREL flag in this
3204 1.1 christos case. */
3205 1.1.1.2 christos
3206 1.1.1.2 christos static bfd_boolean
3207 1.1 christos elf_m68k_discard_copies (struct elf_link_hash_entry *h,
3208 1.1 christos void * inf)
3209 1.1 christos {
3210 1.1 christos struct bfd_link_info *info = (struct bfd_link_info *) inf;
3211 1.1 christos struct elf_m68k_pcrel_relocs_copied *s;
3212 1.1 christos
3213 1.1 christos if (!SYMBOL_CALLS_LOCAL (info, h))
3214 1.1 christos {
3215 1.1 christos if ((info->flags & DF_TEXTREL) == 0)
3216 1.1 christos {
3217 1.1 christos /* Look for relocations against read-only sections. */
3218 1.1 christos for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3219 1.1 christos s != NULL;
3220 1.1 christos s = s->next)
3221 1.1 christos if ((s->section->flags & SEC_READONLY) != 0)
3222 1.1 christos {
3223 1.1 christos info->flags |= DF_TEXTREL;
3224 1.1 christos break;
3225 1.1 christos }
3226 1.1.1.2 christos }
3227 1.1.1.2 christos
3228 1.1.1.2 christos /* Make sure undefined weak symbols are output as a dynamic symbol
3229 1.1.1.2 christos in PIEs. */
3230 1.1.1.2 christos if (h->non_got_ref
3231 1.1.1.2 christos && h->root.type == bfd_link_hash_undefweak
3232 1.1.1.2 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3233 1.1.1.2 christos && h->dynindx == -1
3234 1.1.1.2 christos && !h->forced_local)
3235 1.1.1.2 christos {
3236 1.1.1.2 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
3237 1.1.1.2 christos return FALSE;
3238 1.1 christos }
3239 1.1 christos
3240 1.1 christos return TRUE;
3241 1.1 christos }
3242 1.1 christos
3243 1.1 christos for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3244 1.1 christos s != NULL;
3245 1.1 christos s = s->next)
3246 1.1 christos s->section->size -= s->count * sizeof (Elf32_External_Rela);
3247 1.1 christos
3248 1.1 christos return TRUE;
3249 1.1 christos }
3250 1.1 christos
3251 1.1 christos
3252 1.1 christos /* Install relocation RELA. */
3253 1.1 christos
3254 1.1 christos static void
3255 1.1 christos elf_m68k_install_rela (bfd *output_bfd,
3256 1.1 christos asection *srela,
3257 1.1 christos Elf_Internal_Rela *rela)
3258 1.1 christos {
3259 1.1 christos bfd_byte *loc;
3260 1.1 christos
3261 1.1 christos loc = srela->contents;
3262 1.1 christos loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3263 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
3264 1.1 christos }
3265 1.1 christos
3266 1.1 christos /* Find the base offsets for thread-local storage in this object,
3267 1.1 christos for GD/LD and IE/LE respectively. */
3268 1.1 christos
3269 1.1 christos #define DTP_OFFSET 0x8000
3270 1.1 christos #define TP_OFFSET 0x7000
3271 1.1 christos
3272 1.1 christos static bfd_vma
3273 1.1 christos dtpoff_base (struct bfd_link_info *info)
3274 1.1 christos {
3275 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3276 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
3277 1.1 christos return 0;
3278 1.1 christos return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET;
3279 1.1 christos }
3280 1.1 christos
3281 1.1 christos static bfd_vma
3282 1.1 christos tpoff_base (struct bfd_link_info *info)
3283 1.1 christos {
3284 1.1 christos /* If tls_sec is NULL, we should have signalled an error already. */
3285 1.1 christos if (elf_hash_table (info)->tls_sec == NULL)
3286 1.1 christos return 0;
3287 1.1 christos return elf_hash_table (info)->tls_sec->vma + TP_OFFSET;
3288 1.1 christos }
3289 1.1 christos
3290 1.1 christos /* Output necessary relocation to handle a symbol during static link.
3291 1.1 christos This function is called from elf_m68k_relocate_section. */
3292 1.1 christos
3293 1.1 christos static void
3294 1.1 christos elf_m68k_init_got_entry_static (struct bfd_link_info *info,
3295 1.1 christos bfd *output_bfd,
3296 1.1 christos enum elf_m68k_reloc_type r_type,
3297 1.1 christos asection *sgot,
3298 1.1 christos bfd_vma got_entry_offset,
3299 1.1 christos bfd_vma relocation)
3300 1.1 christos {
3301 1.1 christos switch (elf_m68k_reloc_got_type (r_type))
3302 1.1 christos {
3303 1.1 christos case R_68K_GOT32O:
3304 1.1 christos bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset);
3305 1.1 christos break;
3306 1.1 christos
3307 1.1 christos case R_68K_TLS_GD32:
3308 1.1 christos /* We know the offset within the module,
3309 1.1 christos put it into the second GOT slot. */
3310 1.1 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3311 1.1 christos sgot->contents + got_entry_offset + 4);
3312 1.1 christos /* FALLTHRU */
3313 1.1 christos
3314 1.1 christos case R_68K_TLS_LDM32:
3315 1.1 christos /* Mark it as belonging to module 1, the executable. */
3316 1.1 christos bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset);
3317 1.1 christos break;
3318 1.1 christos
3319 1.1 christos case R_68K_TLS_IE32:
3320 1.1 christos bfd_put_32 (output_bfd, relocation - tpoff_base (info),
3321 1.1 christos sgot->contents + got_entry_offset);
3322 1.1 christos break;
3323 1.1 christos
3324 1.1 christos default:
3325 1.1 christos BFD_ASSERT (FALSE);
3326 1.1 christos }
3327 1.1 christos }
3328 1.1 christos
3329 1.1 christos /* Output necessary relocation to handle a local symbol
3330 1.1 christos during dynamic link.
3331 1.1 christos This function is called either from elf_m68k_relocate_section
3332 1.1 christos or from elf_m68k_finish_dynamic_symbol. */
3333 1.1 christos
3334 1.1 christos static void
3335 1.1 christos elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info,
3336 1.1 christos bfd *output_bfd,
3337 1.1 christos enum elf_m68k_reloc_type r_type,
3338 1.1 christos asection *sgot,
3339 1.1 christos bfd_vma got_entry_offset,
3340 1.1 christos bfd_vma relocation,
3341 1.1 christos asection *srela)
3342 1.1 christos {
3343 1.1 christos Elf_Internal_Rela outrel;
3344 1.1 christos
3345 1.1 christos switch (elf_m68k_reloc_got_type (r_type))
3346 1.1 christos {
3347 1.1 christos case R_68K_GOT32O:
3348 1.1 christos /* Emit RELATIVE relocation to initialize GOT slot
3349 1.1 christos at run-time. */
3350 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3351 1.1 christos outrel.r_addend = relocation;
3352 1.1 christos break;
3353 1.1 christos
3354 1.1 christos case R_68K_TLS_GD32:
3355 1.1 christos /* We know the offset within the module,
3356 1.1 christos put it into the second GOT slot. */
3357 1.1 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3358 1.1 christos sgot->contents + got_entry_offset + 4);
3359 1.1 christos /* FALLTHRU */
3360 1.1 christos
3361 1.1 christos case R_68K_TLS_LDM32:
3362 1.1 christos /* We don't know the module number,
3363 1.1 christos create a relocation for it. */
3364 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32);
3365 1.1 christos outrel.r_addend = 0;
3366 1.1 christos break;
3367 1.1 christos
3368 1.1 christos case R_68K_TLS_IE32:
3369 1.1 christos /* Emit TPREL relocation to initialize GOT slot
3370 1.1 christos at run-time. */
3371 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32);
3372 1.1 christos outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma;
3373 1.1 christos break;
3374 1.1 christos
3375 1.1 christos default:
3376 1.1 christos BFD_ASSERT (FALSE);
3377 1.1 christos }
3378 1.1 christos
3379 1.1 christos /* Offset of the GOT entry. */
3380 1.1 christos outrel.r_offset = (sgot->output_section->vma
3381 1.1 christos + sgot->output_offset
3382 1.1 christos + got_entry_offset);
3383 1.1 christos
3384 1.1 christos /* Install one of the above relocations. */
3385 1.1 christos elf_m68k_install_rela (output_bfd, srela, &outrel);
3386 1.1 christos
3387 1.1 christos bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset);
3388 1.1 christos }
3389 1.1 christos
3390 1.1 christos /* Relocate an M68K ELF section. */
3391 1.1.1.2 christos
3392 1.1.1.2 christos static bfd_boolean
3393 1.1.1.2 christos elf_m68k_relocate_section (bfd *output_bfd,
3394 1.1.1.2 christos struct bfd_link_info *info,
3395 1.1.1.2 christos bfd *input_bfd,
3396 1.1.1.2 christos asection *input_section,
3397 1.1.1.2 christos bfd_byte *contents,
3398 1.1.1.2 christos Elf_Internal_Rela *relocs,
3399 1.1 christos Elf_Internal_Sym *local_syms,
3400 1.1 christos asection **local_sections)
3401 1.1 christos {
3402 1.1 christos Elf_Internal_Shdr *symtab_hdr;
3403 1.1 christos struct elf_link_hash_entry **sym_hashes;
3404 1.1 christos asection *sgot;
3405 1.1 christos asection *splt;
3406 1.1 christos asection *sreloc;
3407 1.1 christos asection *srela;
3408 1.1 christos struct elf_m68k_got *got;
3409 1.1 christos Elf_Internal_Rela *rel;
3410 1.1 christos Elf_Internal_Rela *relend;
3411 1.1 christos
3412 1.1 christos symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3413 1.1 christos sym_hashes = elf_sym_hashes (input_bfd);
3414 1.1 christos
3415 1.1 christos sgot = NULL;
3416 1.1 christos splt = NULL;
3417 1.1 christos sreloc = NULL;
3418 1.1 christos srela = NULL;
3419 1.1 christos
3420 1.1 christos got = NULL;
3421 1.1 christos
3422 1.1 christos rel = relocs;
3423 1.1 christos relend = relocs + input_section->reloc_count;
3424 1.1 christos for (; rel < relend; rel++)
3425 1.1 christos {
3426 1.1 christos int r_type;
3427 1.1 christos reloc_howto_type *howto;
3428 1.1 christos unsigned long r_symndx;
3429 1.1 christos struct elf_link_hash_entry *h;
3430 1.1 christos Elf_Internal_Sym *sym;
3431 1.1 christos asection *sec;
3432 1.1 christos bfd_vma relocation;
3433 1.1.1.8 christos bfd_boolean unresolved_reloc;
3434 1.1 christos bfd_reloc_status_type r;
3435 1.1 christos bfd_boolean resolved_to_zero;
3436 1.1 christos
3437 1.1 christos r_type = ELF32_R_TYPE (rel->r_info);
3438 1.1 christos if (r_type < 0 || r_type >= (int) R_68K_max)
3439 1.1 christos {
3440 1.1 christos bfd_set_error (bfd_error_bad_value);
3441 1.1 christos return FALSE;
3442 1.1 christos }
3443 1.1 christos howto = howto_table + r_type;
3444 1.1 christos
3445 1.1 christos r_symndx = ELF32_R_SYM (rel->r_info);
3446 1.1 christos
3447 1.1 christos h = NULL;
3448 1.1 christos sym = NULL;
3449 1.1 christos sec = NULL;
3450 1.1 christos unresolved_reloc = FALSE;
3451 1.1 christos
3452 1.1 christos if (r_symndx < symtab_hdr->sh_info)
3453 1.1 christos {
3454 1.1 christos sym = local_syms + r_symndx;
3455 1.1 christos sec = local_sections[r_symndx];
3456 1.1 christos relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3457 1.1 christos }
3458 1.1.1.3 christos else
3459 1.1 christos {
3460 1.1 christos bfd_boolean warned, ignored;
3461 1.1 christos
3462 1.1 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3463 1.1.1.3 christos r_symndx, symtab_hdr, sym_hashes,
3464 1.1 christos h, sec, relocation,
3465 1.1 christos unresolved_reloc, warned, ignored);
3466 1.1.1.2 christos }
3467 1.1 christos
3468 1.1.1.2 christos if (sec != NULL && discarded_section (sec))
3469 1.1 christos RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3470 1.1.1.6 christos rel, 1, relend, howto, 0, contents);
3471 1.1 christos
3472 1.1 christos if (bfd_link_relocatable (info))
3473 1.1.1.8 christos continue;
3474 1.1.1.8 christos
3475 1.1.1.8 christos resolved_to_zero = (h != NULL
3476 1.1 christos && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3477 1.1 christos
3478 1.1 christos switch (r_type)
3479 1.1 christos {
3480 1.1 christos case R_68K_GOT8:
3481 1.1 christos case R_68K_GOT16:
3482 1.1 christos case R_68K_GOT32:
3483 1.1 christos /* Relocation is to the address of the entry for this symbol
3484 1.1 christos in the global offset table. */
3485 1.1 christos if (h != NULL
3486 1.1 christos && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3487 1.1 christos {
3488 1.1 christos if (elf_m68k_hash_table (info)->local_gp_p)
3489 1.1 christos {
3490 1.1 christos bfd_vma sgot_output_offset;
3491 1.1.1.7 christos bfd_vma got_offset;
3492 1.1 christos
3493 1.1.1.7 christos sgot = elf_hash_table (info)->sgot;
3494 1.1 christos
3495 1.1.1.7 christos if (sgot != NULL)
3496 1.1.1.7 christos sgot_output_offset = sgot->output_offset;
3497 1.1.1.7 christos else
3498 1.1.1.7 christos /* In this case we have a reference to
3499 1.1.1.7 christos _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3500 1.1.1.7 christos empty.
3501 1.1 christos ??? Issue a warning? */
3502 1.1 christos sgot_output_offset = 0;
3503 1.1 christos
3504 1.1 christos if (got == NULL)
3505 1.1 christos {
3506 1.1 christos struct elf_m68k_bfd2got_entry *bfd2got_entry;
3507 1.1 christos
3508 1.1 christos bfd2got_entry
3509 1.1 christos = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3510 1.1 christos input_bfd, SEARCH, NULL);
3511 1.1 christos
3512 1.1 christos if (bfd2got_entry != NULL)
3513 1.1 christos {
3514 1.1 christos got = bfd2got_entry->got;
3515 1.1 christos BFD_ASSERT (got != NULL);
3516 1.1 christos
3517 1.1 christos got_offset = got->offset;
3518 1.1 christos }
3519 1.1 christos else
3520 1.1 christos /* In this case we have a reference to
3521 1.1 christos _GLOBAL_OFFSET_TABLE_, but no other references
3522 1.1 christos accessing any GOT entries.
3523 1.1 christos ??? Issue a warning? */
3524 1.1 christos got_offset = 0;
3525 1.1 christos }
3526 1.1 christos else
3527 1.1 christos got_offset = got->offset;
3528 1.1 christos
3529 1.1 christos /* Adjust GOT pointer to point to the GOT
3530 1.1 christos assigned to input_bfd. */
3531 1.1 christos rel->r_addend += sgot_output_offset + got_offset;
3532 1.1 christos }
3533 1.1 christos else
3534 1.1 christos BFD_ASSERT (got == NULL || got->offset == 0);
3535 1.1 christos
3536 1.1 christos break;
3537 1.1 christos }
3538 1.1 christos /* Fall through. */
3539 1.1 christos case R_68K_GOT8O:
3540 1.1 christos case R_68K_GOT16O:
3541 1.1 christos case R_68K_GOT32O:
3542 1.1 christos
3543 1.1 christos case R_68K_TLS_LDM32:
3544 1.1 christos case R_68K_TLS_LDM16:
3545 1.1 christos case R_68K_TLS_LDM8:
3546 1.1 christos
3547 1.1 christos case R_68K_TLS_GD8:
3548 1.1 christos case R_68K_TLS_GD16:
3549 1.1 christos case R_68K_TLS_GD32:
3550 1.1 christos
3551 1.1 christos case R_68K_TLS_IE8:
3552 1.1 christos case R_68K_TLS_IE16:
3553 1.1 christos case R_68K_TLS_IE32:
3554 1.1 christos
3555 1.1 christos /* Relocation is the offset of the entry for this symbol in
3556 1.1 christos the global offset table. */
3557 1.1 christos
3558 1.1 christos {
3559 1.1 christos struct elf_m68k_got_entry_key key_;
3560 1.1 christos bfd_vma *off_ptr;
3561 1.1.1.7 christos bfd_vma off;
3562 1.1.1.7 christos
3563 1.1 christos sgot = elf_hash_table (info)->sgot;
3564 1.1 christos BFD_ASSERT (sgot != NULL);
3565 1.1 christos
3566 1.1 christos if (got == NULL)
3567 1.1 christos {
3568 1.1 christos got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3569 1.1 christos input_bfd, MUST_FIND,
3570 1.1 christos NULL)->got;
3571 1.1 christos BFD_ASSERT (got != NULL);
3572 1.1 christos }
3573 1.1 christos
3574 1.1 christos /* Get GOT offset for this symbol. */
3575 1.1 christos elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx,
3576 1.1 christos r_type);
3577 1.1 christos off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND,
3578 1.1 christos NULL)->u.s2.offset;
3579 1.1 christos off = *off_ptr;
3580 1.1 christos
3581 1.1 christos /* The offset must always be a multiple of 4. We use
3582 1.1 christos the least significant bit to record whether we have
3583 1.1 christos already generated the necessary reloc. */
3584 1.1 christos if ((off & 1) != 0)
3585 1.1 christos off &= ~1;
3586 1.1 christos else
3587 1.1 christos {
3588 1.1 christos if (h != NULL
3589 1.1 christos /* @TLSLDM relocations are bounded to the module, in
3590 1.1 christos which the symbol is defined -- not to the symbol
3591 1.1 christos itself. */
3592 1.1 christos && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32)
3593 1.1 christos {
3594 1.1 christos bfd_boolean dyn;
3595 1.1.1.6 christos
3596 1.1.1.6 christos dyn = elf_hash_table (info)->dynamic_sections_created;
3597 1.1.1.6 christos if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3598 1.1.1.6 christos bfd_link_pic (info),
3599 1.1 christos h)
3600 1.1.1.8 christos || (bfd_link_pic (info)
3601 1.1.1.8 christos && SYMBOL_REFERENCES_LOCAL (info, h))
3602 1.1 christos || ((ELF_ST_VISIBILITY (h->other)
3603 1.1 christos || resolved_to_zero)
3604 1.1 christos && h->root.type == bfd_link_hash_undefweak))
3605 1.1 christos {
3606 1.1 christos /* This is actually a static link, or it is a
3607 1.1 christos -Bsymbolic link and the symbol is defined
3608 1.1 christos locally, or the symbol was forced to be local
3609 1.1 christos because of a version file. We must initialize
3610 1.1 christos this entry in the global offset table. Since
3611 1.1 christos the offset must always be a multiple of 4, we
3612 1.1 christos use the least significant bit to record whether
3613 1.1 christos we have initialized it already.
3614 1.1 christos
3615 1.1 christos When doing a dynamic link, we create a .rela.got
3616 1.1 christos relocation entry to initialize the value. This
3617 1.1 christos is done in the finish_dynamic_symbol routine. */
3618 1.1 christos
3619 1.1 christos elf_m68k_init_got_entry_static (info,
3620 1.1 christos output_bfd,
3621 1.1 christos r_type,
3622 1.1 christos sgot,
3623 1.1 christos off,
3624 1.1 christos relocation);
3625 1.1 christos
3626 1.1 christos *off_ptr |= 1;
3627 1.1 christos }
3628 1.1 christos else
3629 1.1.1.6 christos unresolved_reloc = FALSE;
3630 1.1 christos }
3631 1.1 christos else if (bfd_link_pic (info)) /* && h == NULL */
3632 1.1.1.7 christos /* Process local symbol during dynamic link. */
3633 1.1.1.7 christos {
3634 1.1 christos srela = elf_hash_table (info)->srelgot;
3635 1.1 christos BFD_ASSERT (srela != NULL);
3636 1.1 christos
3637 1.1 christos elf_m68k_init_got_entry_local_shared (info,
3638 1.1 christos output_bfd,
3639 1.1 christos r_type,
3640 1.1 christos sgot,
3641 1.1 christos off,
3642 1.1 christos relocation,
3643 1.1 christos srela);
3644 1.1 christos
3645 1.1.1.6 christos *off_ptr |= 1;
3646 1.1 christos }
3647 1.1 christos else /* h == NULL && !bfd_link_pic (info) */
3648 1.1 christos {
3649 1.1 christos elf_m68k_init_got_entry_static (info,
3650 1.1 christos output_bfd,
3651 1.1 christos r_type,
3652 1.1 christos sgot,
3653 1.1 christos off,
3654 1.1 christos relocation);
3655 1.1 christos
3656 1.1 christos *off_ptr |= 1;
3657 1.1 christos }
3658 1.1 christos }
3659 1.1 christos
3660 1.1 christos /* We don't use elf_m68k_reloc_got_type in the condition below
3661 1.1 christos because this is the only place where difference between
3662 1.1 christos R_68K_GOTx and R_68K_GOTxO relocations matters. */
3663 1.1 christos if (r_type == R_68K_GOT32O
3664 1.1 christos || r_type == R_68K_GOT16O
3665 1.1 christos || r_type == R_68K_GOT8O
3666 1.1 christos || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32
3667 1.1 christos || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32
3668 1.1 christos || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32)
3669 1.1 christos {
3670 1.1 christos /* GOT pointer is adjusted to point to the start/middle
3671 1.1 christos of local GOT. Adjust the offset accordingly. */
3672 1.1 christos BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p
3673 1.1 christos || off >= got->offset);
3674 1.1 christos
3675 1.1 christos if (elf_m68k_hash_table (info)->local_gp_p)
3676 1.1 christos relocation = off - got->offset;
3677 1.1 christos else
3678 1.1 christos {
3679 1.1 christos BFD_ASSERT (got->offset == 0);
3680 1.1 christos relocation = sgot->output_offset + off;
3681 1.1 christos }
3682 1.1 christos
3683 1.1 christos /* This relocation does not use the addend. */
3684 1.1 christos rel->r_addend = 0;
3685 1.1 christos }
3686 1.1 christos else
3687 1.1 christos relocation = (sgot->output_section->vma + sgot->output_offset
3688 1.1 christos + off);
3689 1.1 christos }
3690 1.1 christos break;
3691 1.1 christos
3692 1.1 christos case R_68K_TLS_LDO32:
3693 1.1 christos case R_68K_TLS_LDO16:
3694 1.1 christos case R_68K_TLS_LDO8:
3695 1.1 christos relocation -= dtpoff_base (info);
3696 1.1 christos break;
3697 1.1 christos
3698 1.1 christos case R_68K_TLS_LE32:
3699 1.1.1.6 christos case R_68K_TLS_LE16:
3700 1.1 christos case R_68K_TLS_LE8:
3701 1.1.1.7 christos if (bfd_link_dll (info))
3702 1.1.1.7 christos {
3703 1.1.1.8 christos _bfd_error_handler
3704 1.1.1.8 christos /* xgettext:c-format */
3705 1.1.1.8 christos (_("%pB(%pA+%#" PRIx64 "): "
3706 1.1.1.8 christos "%s relocation not permitted in shared object"),
3707 1.1 christos input_bfd, input_section, (uint64_t) rel->r_offset,
3708 1.1 christos howto->name);
3709 1.1 christos
3710 1.1 christos return FALSE;
3711 1.1 christos }
3712 1.1 christos else
3713 1.1 christos relocation -= tpoff_base (info);
3714 1.1 christos
3715 1.1 christos break;
3716 1.1 christos
3717 1.1 christos case R_68K_PLT8:
3718 1.1 christos case R_68K_PLT16:
3719 1.1 christos case R_68K_PLT32:
3720 1.1 christos /* Relocation is to the entry for this symbol in the
3721 1.1 christos procedure linkage table. */
3722 1.1 christos
3723 1.1 christos /* Resolve a PLTxx reloc against a local symbol directly,
3724 1.1 christos without using the procedure linkage table. */
3725 1.1 christos if (h == NULL)
3726 1.1 christos break;
3727 1.1 christos
3728 1.1 christos if (h->plt.offset == (bfd_vma) -1
3729 1.1 christos || !elf_hash_table (info)->dynamic_sections_created)
3730 1.1 christos {
3731 1.1 christos /* We didn't make a PLT entry for this symbol. This
3732 1.1 christos happens when statically linking PIC code, or when
3733 1.1 christos using -Bsymbolic. */
3734 1.1 christos break;
3735 1.1.1.7 christos }
3736 1.1.1.7 christos
3737 1.1 christos splt = elf_hash_table (info)->splt;
3738 1.1 christos BFD_ASSERT (splt != NULL);
3739 1.1 christos
3740 1.1 christos relocation = (splt->output_section->vma
3741 1.1 christos + splt->output_offset
3742 1.1 christos + h->plt.offset);
3743 1.1 christos unresolved_reloc = FALSE;
3744 1.1 christos break;
3745 1.1 christos
3746 1.1 christos case R_68K_PLT8O:
3747 1.1 christos case R_68K_PLT16O:
3748 1.1 christos case R_68K_PLT32O:
3749 1.1 christos /* Relocation is the offset of the entry for this symbol in
3750 1.1 christos the procedure linkage table. */
3751 1.1.1.7 christos BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
3752 1.1.1.7 christos
3753 1.1 christos splt = elf_hash_table (info)->splt;
3754 1.1 christos BFD_ASSERT (splt != NULL);
3755 1.1 christos
3756 1.1 christos relocation = h->plt.offset;
3757 1.1 christos unresolved_reloc = FALSE;
3758 1.1 christos
3759 1.1 christos /* This relocation does not use the addend. */
3760 1.1 christos rel->r_addend = 0;
3761 1.1 christos
3762 1.1 christos break;
3763 1.1 christos
3764 1.1 christos case R_68K_8:
3765 1.1 christos case R_68K_16:
3766 1.1 christos case R_68K_32:
3767 1.1 christos case R_68K_PC8:
3768 1.1.1.6 christos case R_68K_PC16:
3769 1.1 christos case R_68K_PC32:
3770 1.1 christos if (bfd_link_pic (info)
3771 1.1 christos && r_symndx != STN_UNDEF
3772 1.1.1.8 christos && (input_section->flags & SEC_ALLOC) != 0
3773 1.1.1.8 christos && (h == NULL
3774 1.1 christos || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3775 1.1 christos && !resolved_to_zero)
3776 1.1 christos || h->root.type != bfd_link_hash_undefweak)
3777 1.1 christos && ((r_type != R_68K_PC8
3778 1.1 christos && r_type != R_68K_PC16
3779 1.1 christos && r_type != R_68K_PC32)
3780 1.1 christos || !SYMBOL_CALLS_LOCAL (info, h)))
3781 1.1 christos {
3782 1.1 christos Elf_Internal_Rela outrel;
3783 1.1 christos bfd_byte *loc;
3784 1.1 christos bfd_boolean skip, relocate;
3785 1.1 christos
3786 1.1 christos /* When generating a shared object, these relocations
3787 1.1 christos are copied into the output file to be resolved at run
3788 1.1 christos time. */
3789 1.1 christos
3790 1.1 christos skip = FALSE;
3791 1.1 christos relocate = FALSE;
3792 1.1 christos
3793 1.1 christos outrel.r_offset =
3794 1.1 christos _bfd_elf_section_offset (output_bfd, info, input_section,
3795 1.1 christos rel->r_offset);
3796 1.1 christos if (outrel.r_offset == (bfd_vma) -1)
3797 1.1 christos skip = TRUE;
3798 1.1 christos else if (outrel.r_offset == (bfd_vma) -2)
3799 1.1 christos skip = TRUE, relocate = TRUE;
3800 1.1 christos outrel.r_offset += (input_section->output_section->vma
3801 1.1 christos + input_section->output_offset);
3802 1.1 christos
3803 1.1 christos if (skip)
3804 1.1 christos memset (&outrel, 0, sizeof outrel);
3805 1.1 christos else if (h != NULL
3806 1.1 christos && h->dynindx != -1
3807 1.1 christos && (r_type == R_68K_PC8
3808 1.1.1.6 christos || r_type == R_68K_PC16
3809 1.1.1.6 christos || r_type == R_68K_PC32
3810 1.1 christos || !bfd_link_pic (info)
3811 1.1 christos || !SYMBOLIC_BIND (info, h)
3812 1.1 christos || !h->def_regular))
3813 1.1 christos {
3814 1.1 christos outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3815 1.1 christos outrel.r_addend = rel->r_addend;
3816 1.1 christos }
3817 1.1 christos else
3818 1.1 christos {
3819 1.1 christos /* This symbol is local, or marked to become local. */
3820 1.1 christos outrel.r_addend = relocation + rel->r_addend;
3821 1.1 christos
3822 1.1 christos if (r_type == R_68K_32)
3823 1.1 christos {
3824 1.1 christos relocate = TRUE;
3825 1.1 christos outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3826 1.1 christos }
3827 1.1 christos else
3828 1.1 christos {
3829 1.1 christos long indx;
3830 1.1 christos
3831 1.1 christos if (bfd_is_abs_section (sec))
3832 1.1 christos indx = 0;
3833 1.1 christos else if (sec == NULL || sec->owner == NULL)
3834 1.1 christos {
3835 1.1 christos bfd_set_error (bfd_error_bad_value);
3836 1.1 christos return FALSE;
3837 1.1 christos }
3838 1.1 christos else
3839 1.1 christos {
3840 1.1 christos asection *osec;
3841 1.1 christos
3842 1.1 christos /* We are turning this relocation into one
3843 1.1 christos against a section symbol. It would be
3844 1.1 christos proper to subtract the symbol's value,
3845 1.1 christos osec->vma, from the emitted reloc addend,
3846 1.1 christos but ld.so expects buggy relocs. */
3847 1.1 christos osec = sec->output_section;
3848 1.1 christos indx = elf_section_data (osec)->dynindx;
3849 1.1 christos if (indx == 0)
3850 1.1 christos {
3851 1.1 christos struct elf_link_hash_table *htab;
3852 1.1 christos htab = elf_hash_table (info);
3853 1.1 christos osec = htab->text_index_section;
3854 1.1 christos indx = elf_section_data (osec)->dynindx;
3855 1.1 christos }
3856 1.1 christos BFD_ASSERT (indx != 0);
3857 1.1 christos }
3858 1.1 christos
3859 1.1 christos outrel.r_info = ELF32_R_INFO (indx, r_type);
3860 1.1 christos }
3861 1.1 christos }
3862 1.1 christos
3863 1.1 christos sreloc = elf_section_data (input_section)->sreloc;
3864 1.1 christos if (sreloc == NULL)
3865 1.1 christos abort ();
3866 1.1 christos
3867 1.1 christos loc = sreloc->contents;
3868 1.1 christos loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3869 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3870 1.1.1.8 christos
3871 1.1.1.8 christos /* This reloc will be computed at runtime, so there's no
3872 1.1.1.8 christos need to do anything now, except for R_68K_32
3873 1.1 christos relocations that have been turned into
3874 1.1 christos R_68K_RELATIVE. */
3875 1.1 christos if (!relocate)
3876 1.1 christos continue;
3877 1.1 christos }
3878 1.1 christos
3879 1.1 christos break;
3880 1.1 christos
3881 1.1 christos case R_68K_GNU_VTINHERIT:
3882 1.1 christos case R_68K_GNU_VTENTRY:
3883 1.1 christos /* These are no-ops in the end. */
3884 1.1 christos continue;
3885 1.1 christos
3886 1.1 christos default:
3887 1.1 christos break;
3888 1.1 christos }
3889 1.1 christos
3890 1.1 christos /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3891 1.1 christos because such sections are not SEC_ALLOC and thus ld.so will
3892 1.1 christos not process them. */
3893 1.1.1.2 christos if (unresolved_reloc
3894 1.1.1.2 christos && !((input_section->flags & SEC_DEBUGGING) != 0
3895 1.1.1.2 christos && h->def_dynamic)
3896 1.1 christos && _bfd_elf_section_offset (output_bfd, info, input_section,
3897 1.1.1.7 christos rel->r_offset) != (bfd_vma) -1)
3898 1.1.1.7 christos {
3899 1.1.1.8 christos _bfd_error_handler
3900 1.1.1.8 christos /* xgettext:c-format */
3901 1.1 christos (_("%pB(%pA+%#" PRIx64 "): "
3902 1.1 christos "unresolvable %s relocation against symbol `%s'"),
3903 1.1.1.8 christos input_bfd,
3904 1.1 christos input_section,
3905 1.1 christos (uint64_t) rel->r_offset,
3906 1.1 christos howto->name,
3907 1.1 christos h->root.root.string);
3908 1.1 christos return FALSE;
3909 1.1 christos }
3910 1.1 christos
3911 1.1 christos if (r_symndx != STN_UNDEF
3912 1.1 christos && r_type != R_68K_NONE
3913 1.1 christos && (h == NULL
3914 1.1 christos || h->root.type == bfd_link_hash_defined
3915 1.1 christos || h->root.type == bfd_link_hash_defweak))
3916 1.1 christos {
3917 1.1 christos char sym_type;
3918 1.1 christos
3919 1.1 christos sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type;
3920 1.1 christos
3921 1.1 christos if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS))
3922 1.1 christos {
3923 1.1 christos const char *name;
3924 1.1 christos
3925 1.1 christos if (h != NULL)
3926 1.1 christos name = h->root.root.string;
3927 1.1 christos else
3928 1.1 christos {
3929 1.1 christos name = (bfd_elf_string_from_elf_section
3930 1.1 christos (input_bfd, symtab_hdr->sh_link, sym->st_name));
3931 1.1 christos if (name == NULL || *name == '\0')
3932 1.1 christos name = bfd_section_name (input_bfd, sec);
3933 1.1.1.7 christos }
3934 1.1 christos
3935 1.1.1.7 christos _bfd_error_handler
3936 1.1.1.8 christos ((sym_type == STT_TLS
3937 1.1.1.7 christos /* xgettext:c-format */
3938 1.1.1.8 christos ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
3939 1.1 christos /* xgettext:c-format */
3940 1.1 christos : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
3941 1.1.1.8 christos input_bfd,
3942 1.1 christos input_section,
3943 1.1 christos (uint64_t) rel->r_offset,
3944 1.1 christos howto->name,
3945 1.1 christos name);
3946 1.1 christos }
3947 1.1 christos }
3948 1.1 christos
3949 1.1 christos r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3950 1.1 christos contents, rel->r_offset,
3951 1.1 christos relocation, rel->r_addend);
3952 1.1 christos
3953 1.1 christos if (r != bfd_reloc_ok)
3954 1.1 christos {
3955 1.1 christos const char *name;
3956 1.1 christos
3957 1.1 christos if (h != NULL)
3958 1.1 christos name = h->root.root.string;
3959 1.1 christos else
3960 1.1 christos {
3961 1.1 christos name = bfd_elf_string_from_elf_section (input_bfd,
3962 1.1 christos symtab_hdr->sh_link,
3963 1.1 christos sym->st_name);
3964 1.1 christos if (name == NULL)
3965 1.1 christos return FALSE;
3966 1.1 christos if (*name == '\0')
3967 1.1 christos name = bfd_section_name (input_bfd, sec);
3968 1.1 christos }
3969 1.1.1.6 christos
3970 1.1.1.6 christos if (r == bfd_reloc_overflow)
3971 1.1.1.6 christos (*info->callbacks->reloc_overflow)
3972 1.1 christos (info, (h ? &h->root : NULL), name, howto->name,
3973 1.1 christos (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3974 1.1.1.7 christos else
3975 1.1.1.7 christos {
3976 1.1.1.8 christos _bfd_error_handler
3977 1.1 christos /* xgettext:c-format */
3978 1.1.1.8 christos (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
3979 1.1 christos input_bfd, input_section,
3980 1.1 christos (uint64_t) rel->r_offset, name, (int) r);
3981 1.1 christos return FALSE;
3982 1.1 christos }
3983 1.1 christos }
3984 1.1 christos }
3985 1.1 christos
3986 1.1 christos return TRUE;
3987 1.1 christos }
3988 1.1 christos
3989 1.1 christos /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
3990 1.1 christos into section SEC. */
3991 1.1 christos
3992 1.1 christos static void
3993 1.1 christos elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
3994 1.1 christos {
3995 1.1 christos /* Make VALUE PC-relative. */
3996 1.1 christos value -= sec->output_section->vma + offset;
3997 1.1 christos
3998 1.1 christos /* Apply any in-place addend. */
3999 1.1 christos value += bfd_get_32 (sec->owner, sec->contents + offset);
4000 1.1 christos
4001 1.1 christos bfd_put_32 (sec->owner, value, sec->contents + offset);
4002 1.1 christos }
4003 1.1 christos
4004 1.1 christos /* Finish up dynamic symbol handling. We set the contents of various
4005 1.1 christos dynamic sections here. */
4006 1.1.1.2 christos
4007 1.1.1.2 christos static bfd_boolean
4008 1.1.1.2 christos elf_m68k_finish_dynamic_symbol (bfd *output_bfd,
4009 1.1.1.2 christos struct bfd_link_info *info,
4010 1.1 christos struct elf_link_hash_entry *h,
4011 1.1 christos Elf_Internal_Sym *sym)
4012 1.1 christos {
4013 1.1 christos bfd *dynobj;
4014 1.1 christos
4015 1.1 christos dynobj = elf_hash_table (info)->dynobj;
4016 1.1 christos
4017 1.1 christos if (h->plt.offset != (bfd_vma) -1)
4018 1.1 christos {
4019 1.1 christos const struct elf_m68k_plt_info *plt_info;
4020 1.1 christos asection *splt;
4021 1.1 christos asection *sgot;
4022 1.1 christos asection *srela;
4023 1.1 christos bfd_vma plt_index;
4024 1.1 christos bfd_vma got_offset;
4025 1.1 christos Elf_Internal_Rela rela;
4026 1.1 christos bfd_byte *loc;
4027 1.1 christos
4028 1.1 christos /* This symbol has an entry in the procedure linkage table. Set
4029 1.1 christos it up. */
4030 1.1 christos
4031 1.1 christos BFD_ASSERT (h->dynindx != -1);
4032 1.1.1.7 christos
4033 1.1.1.7 christos plt_info = elf_m68k_hash_table (info)->plt_info;
4034 1.1.1.7 christos splt = elf_hash_table (info)->splt;
4035 1.1 christos sgot = elf_hash_table (info)->sgotplt;
4036 1.1 christos srela = elf_hash_table (info)->srelplt;
4037 1.1 christos BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
4038 1.1 christos
4039 1.1 christos /* Get the index in the procedure linkage table which
4040 1.1 christos corresponds to this symbol. This is the index of this symbol
4041 1.1 christos in all the symbols for which we are making plt entries. The
4042 1.1 christos first entry in the procedure linkage table is reserved. */
4043 1.1 christos plt_index = (h->plt.offset / plt_info->size) - 1;
4044 1.1 christos
4045 1.1 christos /* Get the offset into the .got table of the entry that
4046 1.1 christos corresponds to this function. Each .got entry is 4 bytes.
4047 1.1 christos The first three are reserved. */
4048 1.1 christos got_offset = (plt_index + 3) * 4;
4049 1.1 christos
4050 1.1 christos memcpy (splt->contents + h->plt.offset,
4051 1.1 christos plt_info->symbol_entry,
4052 1.1 christos plt_info->size);
4053 1.1 christos
4054 1.1 christos elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
4055 1.1 christos (sgot->output_section->vma
4056 1.1 christos + sgot->output_offset
4057 1.1 christos + got_offset));
4058 1.1 christos
4059 1.1 christos bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4060 1.1 christos splt->contents
4061 1.1 christos + h->plt.offset
4062 1.1 christos + plt_info->symbol_resolve_entry + 2);
4063 1.1 christos
4064 1.1 christos elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
4065 1.1 christos splt->output_section->vma);
4066 1.1 christos
4067 1.1 christos /* Fill in the entry in the global offset table. */
4068 1.1 christos bfd_put_32 (output_bfd,
4069 1.1 christos (splt->output_section->vma
4070 1.1 christos + splt->output_offset
4071 1.1 christos + h->plt.offset
4072 1.1 christos + plt_info->symbol_resolve_entry),
4073 1.1 christos sgot->contents + got_offset);
4074 1.1 christos
4075 1.1 christos /* Fill in the entry in the .rela.plt section. */
4076 1.1 christos rela.r_offset = (sgot->output_section->vma
4077 1.1 christos + sgot->output_offset
4078 1.1 christos + got_offset);
4079 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
4080 1.1 christos rela.r_addend = 0;
4081 1.1 christos loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
4082 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4083 1.1 christos
4084 1.1 christos if (!h->def_regular)
4085 1.1 christos {
4086 1.1 christos /* Mark the symbol as undefined, rather than as defined in
4087 1.1 christos the .plt section. Leave the value alone. */
4088 1.1 christos sym->st_shndx = SHN_UNDEF;
4089 1.1 christos }
4090 1.1 christos }
4091 1.1 christos
4092 1.1 christos if (elf_m68k_hash_entry (h)->glist != NULL)
4093 1.1 christos {
4094 1.1 christos asection *sgot;
4095 1.1 christos asection *srela;
4096 1.1 christos struct elf_m68k_got_entry *got_entry;
4097 1.1 christos
4098 1.1 christos /* This symbol has an entry in the global offset table. Set it
4099 1.1.1.7 christos up. */
4100 1.1.1.7 christos
4101 1.1 christos sgot = elf_hash_table (info)->sgot;
4102 1.1 christos srela = elf_hash_table (info)->srelgot;
4103 1.1 christos BFD_ASSERT (sgot != NULL && srela != NULL);
4104 1.1 christos
4105 1.1 christos got_entry = elf_m68k_hash_entry (h)->glist;
4106 1.1 christos
4107 1.1 christos while (got_entry != NULL)
4108 1.1 christos {
4109 1.1 christos enum elf_m68k_reloc_type r_type;
4110 1.1 christos bfd_vma got_entry_offset;
4111 1.1 christos
4112 1.1 christos r_type = got_entry->key_.type;
4113 1.1 christos got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1;
4114 1.1 christos
4115 1.1 christos /* If this is a -Bsymbolic link, and the symbol is defined
4116 1.1 christos locally, we just want to emit a RELATIVE reloc. Likewise if
4117 1.1 christos the symbol was forced to be local because of a version file.
4118 1.1.1.6 christos The entry in the global offset table already have been
4119 1.1 christos initialized in the relocate_section function. */
4120 1.1 christos if (bfd_link_pic (info)
4121 1.1 christos && SYMBOL_REFERENCES_LOCAL (info, h))
4122 1.1 christos {
4123 1.1 christos bfd_vma relocation;
4124 1.1 christos
4125 1.1 christos relocation = bfd_get_signed_32 (output_bfd,
4126 1.1 christos (sgot->contents
4127 1.1 christos + got_entry_offset));
4128 1.1 christos
4129 1.1 christos /* Undo TP bias. */
4130 1.1 christos switch (elf_m68k_reloc_got_type (r_type))
4131 1.1 christos {
4132 1.1 christos case R_68K_GOT32O:
4133 1.1 christos case R_68K_TLS_LDM32:
4134 1.1 christos break;
4135 1.1 christos
4136 1.1 christos case R_68K_TLS_GD32:
4137 1.1 christos /* The value for this relocation is actually put in
4138 1.1 christos the second GOT slot. */
4139 1.1 christos relocation = bfd_get_signed_32 (output_bfd,
4140 1.1 christos (sgot->contents
4141 1.1 christos + got_entry_offset + 4));
4142 1.1 christos relocation += dtpoff_base (info);
4143 1.1 christos break;
4144 1.1 christos
4145 1.1 christos case R_68K_TLS_IE32:
4146 1.1 christos relocation += tpoff_base (info);
4147 1.1 christos break;
4148 1.1 christos
4149 1.1 christos default:
4150 1.1 christos BFD_ASSERT (FALSE);
4151 1.1 christos }
4152 1.1 christos
4153 1.1 christos elf_m68k_init_got_entry_local_shared (info,
4154 1.1 christos output_bfd,
4155 1.1 christos r_type,
4156 1.1 christos sgot,
4157 1.1 christos got_entry_offset,
4158 1.1 christos relocation,
4159 1.1 christos srela);
4160 1.1 christos }
4161 1.1 christos else
4162 1.1 christos {
4163 1.1 christos Elf_Internal_Rela rela;
4164 1.1 christos
4165 1.1 christos /* Put zeros to GOT slots that will be initialized
4166 1.1 christos at run-time. */
4167 1.1 christos {
4168 1.1 christos bfd_vma n_slots;
4169 1.1 christos
4170 1.1 christos n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type);
4171 1.1 christos while (n_slots--)
4172 1.1 christos bfd_put_32 (output_bfd, (bfd_vma) 0,
4173 1.1 christos (sgot->contents + got_entry_offset
4174 1.1 christos + 4 * n_slots));
4175 1.1 christos }
4176 1.1 christos
4177 1.1 christos rela.r_addend = 0;
4178 1.1 christos rela.r_offset = (sgot->output_section->vma
4179 1.1 christos + sgot->output_offset
4180 1.1 christos + got_entry_offset);
4181 1.1 christos
4182 1.1 christos switch (elf_m68k_reloc_got_type (r_type))
4183 1.1 christos {
4184 1.1 christos case R_68K_GOT32O:
4185 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
4186 1.1 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4187 1.1 christos break;
4188 1.1 christos
4189 1.1 christos case R_68K_TLS_GD32:
4190 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32);
4191 1.1 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4192 1.1 christos
4193 1.1 christos rela.r_offset += 4;
4194 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32);
4195 1.1 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4196 1.1 christos break;
4197 1.1 christos
4198 1.1 christos case R_68K_TLS_IE32:
4199 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32);
4200 1.1 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4201 1.1 christos break;
4202 1.1 christos
4203 1.1 christos default:
4204 1.1 christos BFD_ASSERT (FALSE);
4205 1.1 christos break;
4206 1.1 christos }
4207 1.1 christos }
4208 1.1 christos
4209 1.1 christos got_entry = got_entry->u.s2.next;
4210 1.1 christos }
4211 1.1 christos }
4212 1.1 christos
4213 1.1 christos if (h->needs_copy)
4214 1.1 christos {
4215 1.1 christos asection *s;
4216 1.1 christos Elf_Internal_Rela rela;
4217 1.1 christos bfd_byte *loc;
4218 1.1 christos
4219 1.1 christos /* This symbol needs a copy reloc. Set it up. */
4220 1.1 christos
4221 1.1 christos BFD_ASSERT (h->dynindx != -1
4222 1.1 christos && (h->root.type == bfd_link_hash_defined
4223 1.1.1.2 christos || h->root.type == bfd_link_hash_defweak));
4224 1.1 christos
4225 1.1 christos s = bfd_get_linker_section (dynobj, ".rela.bss");
4226 1.1 christos BFD_ASSERT (s != NULL);
4227 1.1 christos
4228 1.1 christos rela.r_offset = (h->root.u.def.value
4229 1.1 christos + h->root.u.def.section->output_section->vma
4230 1.1 christos + h->root.u.def.section->output_offset);
4231 1.1 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
4232 1.1 christos rela.r_addend = 0;
4233 1.1 christos loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4234 1.1 christos bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4235 1.1 christos }
4236 1.1 christos
4237 1.1 christos return TRUE;
4238 1.1 christos }
4239 1.1 christos
4240 1.1 christos /* Finish up the dynamic sections. */
4241 1.1.1.2 christos
4242 1.1 christos static bfd_boolean
4243 1.1 christos elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4244 1.1 christos {
4245 1.1 christos bfd *dynobj;
4246 1.1 christos asection *sgot;
4247 1.1 christos asection *sdyn;
4248 1.1 christos
4249 1.1.1.7 christos dynobj = elf_hash_table (info)->dynobj;
4250 1.1 christos
4251 1.1.1.2 christos sgot = elf_hash_table (info)->sgotplt;
4252 1.1 christos BFD_ASSERT (sgot != NULL);
4253 1.1 christos sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4254 1.1 christos
4255 1.1 christos if (elf_hash_table (info)->dynamic_sections_created)
4256 1.1 christos {
4257 1.1 christos asection *splt;
4258 1.1.1.7 christos Elf32_External_Dyn *dyncon, *dynconend;
4259 1.1 christos
4260 1.1 christos splt = elf_hash_table (info)->splt;
4261 1.1 christos BFD_ASSERT (splt != NULL && sdyn != NULL);
4262 1.1 christos
4263 1.1 christos dyncon = (Elf32_External_Dyn *) sdyn->contents;
4264 1.1 christos dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4265 1.1 christos for (; dyncon < dynconend; dyncon++)
4266 1.1 christos {
4267 1.1 christos Elf_Internal_Dyn dyn;
4268 1.1 christos asection *s;
4269 1.1 christos
4270 1.1 christos bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4271 1.1 christos
4272 1.1 christos switch (dyn.d_tag)
4273 1.1 christos {
4274 1.1 christos default:
4275 1.1 christos break;
4276 1.1.1.7 christos
4277 1.1 christos case DT_PLTGOT:
4278 1.1 christos s = elf_hash_table (info)->sgotplt;
4279 1.1.1.7 christos goto get_vma;
4280 1.1 christos case DT_JMPREL:
4281 1.1.1.6 christos s = elf_hash_table (info)->srelplt;
4282 1.1 christos get_vma:
4283 1.1 christos dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4284 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4285 1.1 christos break;
4286 1.1.1.7 christos
4287 1.1 christos case DT_PLTRELSZ:
4288 1.1 christos s = elf_hash_table (info)->srelplt;
4289 1.1 christos dyn.d_un.d_val = s->size;
4290 1.1 christos bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4291 1.1 christos break;
4292 1.1 christos }
4293 1.1 christos }
4294 1.1 christos
4295 1.1 christos /* Fill in the first entry in the procedure linkage table. */
4296 1.1 christos if (splt->size > 0)
4297 1.1 christos {
4298 1.1 christos const struct elf_m68k_plt_info *plt_info;
4299 1.1 christos
4300 1.1 christos plt_info = elf_m68k_hash_table (info)->plt_info;
4301 1.1 christos memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
4302 1.1 christos
4303 1.1 christos elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
4304 1.1 christos (sgot->output_section->vma
4305 1.1 christos + sgot->output_offset
4306 1.1 christos + 4));
4307 1.1 christos
4308 1.1 christos elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
4309 1.1 christos (sgot->output_section->vma
4310 1.1 christos + sgot->output_offset
4311 1.1 christos + 8));
4312 1.1 christos
4313 1.1 christos elf_section_data (splt->output_section)->this_hdr.sh_entsize
4314 1.1 christos = plt_info->size;
4315 1.1 christos }
4316 1.1 christos }
4317 1.1 christos
4318 1.1 christos /* Fill in the first three entries in the global offset table. */
4319 1.1 christos if (sgot->size > 0)
4320 1.1 christos {
4321 1.1 christos if (sdyn == NULL)
4322 1.1 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4323 1.1 christos else
4324 1.1 christos bfd_put_32 (output_bfd,
4325 1.1 christos sdyn->output_section->vma + sdyn->output_offset,
4326 1.1 christos sgot->contents);
4327 1.1 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4328 1.1 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4329 1.1 christos }
4330 1.1 christos
4331 1.1 christos elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4332 1.1 christos
4333 1.1 christos return TRUE;
4334 1.1 christos }
4335 1.1 christos
4336 1.1 christos /* Given a .data section and a .emreloc in-memory section, store
4337 1.1 christos relocation information into the .emreloc section which can be
4338 1.1 christos used at runtime to relocate the section. This is called by the
4339 1.1 christos linker when the --embedded-relocs switch is used. This is called
4340 1.1 christos after the add_symbols entry point has been called for all the
4341 1.1 christos objects, and before the final_link entry point is called. */
4342 1.1.1.6 christos
4343 1.1.1.6 christos bfd_boolean
4344 1.1.1.6 christos bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info,
4345 1.1 christos asection *datasec, asection *relsec,
4346 1.1 christos char **errmsg)
4347 1.1 christos {
4348 1.1 christos Elf_Internal_Shdr *symtab_hdr;
4349 1.1 christos Elf_Internal_Sym *isymbuf = NULL;
4350 1.1 christos Elf_Internal_Rela *internal_relocs = NULL;
4351 1.1 christos Elf_Internal_Rela *irel, *irelend;
4352 1.1 christos bfd_byte *p;
4353 1.1.1.6 christos bfd_size_type amt;
4354 1.1 christos
4355 1.1 christos BFD_ASSERT (! bfd_link_relocatable (info));
4356 1.1 christos
4357 1.1 christos *errmsg = NULL;
4358 1.1 christos
4359 1.1 christos if (datasec->reloc_count == 0)
4360 1.1 christos return TRUE;
4361 1.1 christos
4362 1.1 christos symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4363 1.1 christos
4364 1.1.1.2 christos /* Get a copy of the native relocations. */
4365 1.1 christos internal_relocs = (_bfd_elf_link_read_relocs
4366 1.1 christos (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL,
4367 1.1 christos info->keep_memory));
4368 1.1 christos if (internal_relocs == NULL)
4369 1.1 christos goto error_return;
4370 1.1 christos
4371 1.1 christos amt = (bfd_size_type) datasec->reloc_count * 12;
4372 1.1 christos relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
4373 1.1 christos if (relsec->contents == NULL)
4374 1.1 christos goto error_return;
4375 1.1 christos
4376 1.1 christos p = relsec->contents;
4377 1.1 christos
4378 1.1 christos irelend = internal_relocs + datasec->reloc_count;
4379 1.1 christos for (irel = internal_relocs; irel < irelend; irel++, p += 12)
4380 1.1 christos {
4381 1.1 christos asection *targetsec;
4382 1.1 christos
4383 1.1 christos /* We are going to write a four byte longword into the runtime
4384 1.1 christos reloc section. The longword will be the address in the data
4385 1.1 christos section which must be relocated. It is followed by the name
4386 1.1 christos of the target section NUL-padded or truncated to 8
4387 1.1 christos characters. */
4388 1.1 christos
4389 1.1 christos /* We can only relocate absolute longword relocs at run time. */
4390 1.1.1.8 christos if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
4391 1.1 christos {
4392 1.1 christos *errmsg = _("unsupported relocation type");
4393 1.1 christos bfd_set_error (bfd_error_bad_value);
4394 1.1 christos goto error_return;
4395 1.1 christos }
4396 1.1 christos
4397 1.1 christos /* Get the target section referred to by the reloc. */
4398 1.1 christos if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4399 1.1 christos {
4400 1.1 christos /* A local symbol. */
4401 1.1 christos Elf_Internal_Sym *isym;
4402 1.1 christos
4403 1.1 christos /* Read this BFD's local symbols if we haven't done so already. */
4404 1.1 christos if (isymbuf == NULL)
4405 1.1 christos {
4406 1.1 christos isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4407 1.1 christos if (isymbuf == NULL)
4408 1.1 christos isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4409 1.1 christos symtab_hdr->sh_info, 0,
4410 1.1 christos NULL, NULL, NULL);
4411 1.1 christos if (isymbuf == NULL)
4412 1.1 christos goto error_return;
4413 1.1 christos }
4414 1.1 christos
4415 1.1 christos isym = isymbuf + ELF32_R_SYM (irel->r_info);
4416 1.1 christos targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4417 1.1 christos }
4418 1.1 christos else
4419 1.1 christos {
4420 1.1 christos unsigned long indx;
4421 1.1 christos struct elf_link_hash_entry *h;
4422 1.1 christos
4423 1.1 christos /* An external symbol. */
4424 1.1 christos indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4425 1.1 christos h = elf_sym_hashes (abfd)[indx];
4426 1.1 christos BFD_ASSERT (h != NULL);
4427 1.1 christos if (h->root.type == bfd_link_hash_defined
4428 1.1 christos || h->root.type == bfd_link_hash_defweak)
4429 1.1 christos targetsec = h->root.u.def.section;
4430 1.1 christos else
4431 1.1 christos targetsec = NULL;
4432 1.1 christos }
4433 1.1 christos
4434 1.1 christos bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
4435 1.1 christos memset (p + 4, 0, 8);
4436 1.1 christos if (targetsec != NULL)
4437 1.1 christos strncpy ((char *) p + 4, targetsec->output_section->name, 8);
4438 1.1 christos }
4439 1.1 christos
4440 1.1 christos if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4441 1.1 christos free (isymbuf);
4442 1.1 christos if (internal_relocs != NULL
4443 1.1 christos && elf_section_data (datasec)->relocs != internal_relocs)
4444 1.1 christos free (internal_relocs);
4445 1.1 christos return TRUE;
4446 1.1 christos
4447 1.1 christos error_return:
4448 1.1 christos if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4449 1.1 christos free (isymbuf);
4450 1.1 christos if (internal_relocs != NULL
4451 1.1 christos && elf_section_data (datasec)->relocs != internal_relocs)
4452 1.1 christos free (internal_relocs);
4453 1.1 christos return FALSE;
4454 1.1 christos }
4455 1.1 christos
4456 1.1 christos /* Set target options. */
4457 1.1 christos
4458 1.1 christos void
4459 1.1 christos bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling)
4460 1.1 christos {
4461 1.1 christos struct elf_m68k_link_hash_table *htab;
4462 1.1 christos bfd_boolean use_neg_got_offsets_p;
4463 1.1 christos bfd_boolean allow_multigot_p;
4464 1.1 christos bfd_boolean local_gp_p;
4465 1.1 christos
4466 1.1 christos switch (got_handling)
4467 1.1 christos {
4468 1.1 christos case 0:
4469 1.1 christos /* --got=single. */
4470 1.1 christos local_gp_p = FALSE;
4471 1.1 christos use_neg_got_offsets_p = FALSE;
4472 1.1 christos allow_multigot_p = FALSE;
4473 1.1 christos break;
4474 1.1 christos
4475 1.1 christos case 1:
4476 1.1 christos /* --got=negative. */
4477 1.1 christos local_gp_p = TRUE;
4478 1.1 christos use_neg_got_offsets_p = TRUE;
4479 1.1 christos allow_multigot_p = FALSE;
4480 1.1 christos break;
4481 1.1 christos
4482 1.1 christos case 2:
4483 1.1 christos /* --got=multigot. */
4484 1.1 christos local_gp_p = TRUE;
4485 1.1 christos use_neg_got_offsets_p = TRUE;
4486 1.1 christos allow_multigot_p = TRUE;
4487 1.1 christos break;
4488 1.1 christos
4489 1.1 christos default:
4490 1.1 christos BFD_ASSERT (FALSE);
4491 1.1 christos return;
4492 1.1 christos }
4493 1.1 christos
4494 1.1 christos htab = elf_m68k_hash_table (info);
4495 1.1 christos if (htab != NULL)
4496 1.1 christos {
4497 1.1 christos htab->local_gp_p = local_gp_p;
4498 1.1 christos htab->use_neg_got_offsets_p = use_neg_got_offsets_p;
4499 1.1 christos htab->allow_multigot_p = allow_multigot_p;
4500 1.1 christos }
4501 1.1 christos }
4502 1.1.1.3 christos
4503 1.1.1.3 christos static enum elf_reloc_type_class
4504 1.1.1.3 christos elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4505 1.1 christos const asection *rel_sec ATTRIBUTE_UNUSED,
4506 1.1 christos const Elf_Internal_Rela *rela)
4507 1.1 christos {
4508 1.1 christos switch ((int) ELF32_R_TYPE (rela->r_info))
4509 1.1 christos {
4510 1.1 christos case R_68K_RELATIVE:
4511 1.1 christos return reloc_class_relative;
4512 1.1 christos case R_68K_JMP_SLOT:
4513 1.1 christos return reloc_class_plt;
4514 1.1 christos case R_68K_COPY:
4515 1.1 christos return reloc_class_copy;
4516 1.1 christos default:
4517 1.1 christos return reloc_class_normal;
4518 1.1 christos }
4519 1.1 christos }
4520 1.1 christos
4521 1.1 christos /* Return address for Ith PLT stub in section PLT, for relocation REL
4522 1.1 christos or (bfd_vma) -1 if it should not be included. */
4523 1.1 christos
4524 1.1 christos static bfd_vma
4525 1.1 christos elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
4526 1.1 christos const arelent *rel ATTRIBUTE_UNUSED)
4527 1.1 christos {
4528 1.1 christos return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
4529 1.1.1.2 christos }
4530 1.1.1.2 christos
4531 1.1.1.2 christos /* Support for core dump NOTE sections. */
4532 1.1.1.2 christos
4533 1.1.1.2 christos static bfd_boolean
4534 1.1.1.2 christos elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
4535 1.1.1.2 christos {
4536 1.1.1.2 christos int offset;
4537 1.1.1.2 christos size_t size;
4538 1.1.1.2 christos
4539 1.1.1.2 christos switch (note->descsz)
4540 1.1.1.2 christos {
4541 1.1.1.2 christos default:
4542 1.1.1.2 christos return FALSE;
4543 1.1.1.2 christos
4544 1.1.1.2 christos case 154: /* Linux/m68k */
4545 1.1.1.2 christos /* pr_cursig */
4546 1.1.1.2 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4547 1.1.1.2 christos
4548 1.1.1.2 christos /* pr_pid */
4549 1.1.1.2 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
4550 1.1.1.2 christos
4551 1.1.1.2 christos /* pr_reg */
4552 1.1.1.2 christos offset = 70;
4553 1.1.1.2 christos size = 80;
4554 1.1.1.2 christos
4555 1.1.1.2 christos break;
4556 1.1.1.2 christos }
4557 1.1.1.2 christos
4558 1.1.1.2 christos /* Make a ".reg/999" section. */
4559 1.1.1.2 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4560 1.1.1.2 christos size, note->descpos + offset);
4561 1.1.1.2 christos }
4562 1.1.1.2 christos
4563 1.1.1.2 christos static bfd_boolean
4564 1.1.1.2 christos elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4565 1.1.1.2 christos {
4566 1.1.1.2 christos switch (note->descsz)
4567 1.1.1.2 christos {
4568 1.1.1.2 christos default:
4569 1.1.1.2 christos return FALSE;
4570 1.1.1.2 christos
4571 1.1.1.2 christos case 124: /* Linux/m68k elf_prpsinfo. */
4572 1.1.1.2 christos elf_tdata (abfd)->core->pid
4573 1.1.1.2 christos = bfd_get_32 (abfd, note->descdata + 12);
4574 1.1.1.2 christos elf_tdata (abfd)->core->program
4575 1.1.1.2 christos = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4576 1.1.1.2 christos elf_tdata (abfd)->core->command
4577 1.1.1.2 christos = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4578 1.1.1.2 christos }
4579 1.1.1.2 christos
4580 1.1.1.2 christos /* Note that for some reason, a spurious space is tacked
4581 1.1.1.2 christos onto the end of the args in some (at least one anyway)
4582 1.1.1.2 christos implementations, so strip it off if it exists. */
4583 1.1.1.2 christos {
4584 1.1.1.2 christos char *command = elf_tdata (abfd)->core->command;
4585 1.1.1.2 christos int n = strlen (command);
4586 1.1.1.2 christos
4587 1.1.1.2 christos if (n > 0 && command[n - 1] == ' ')
4588 1.1.1.2 christos command[n - 1] = '\0';
4589 1.1.1.2 christos }
4590 1.1.1.2 christos
4591 1.1.1.2 christos return TRUE;
4592 1.1.1.4 christos }
4593 1.1 christos
4594 1.1 christos #define TARGET_BIG_SYM m68k_elf32_vec
4595 1.1 christos #define TARGET_BIG_NAME "elf32-m68k"
4596 1.1 christos #define ELF_MACHINE_CODE EM_68K
4597 1.1 christos #define ELF_MAXPAGESIZE 0x2000
4598 1.1 christos #define elf_backend_create_dynamic_sections \
4599 1.1 christos _bfd_elf_create_dynamic_sections
4600 1.1 christos #define bfd_elf32_bfd_link_hash_table_create \
4601 1.1 christos elf_m68k_link_hash_table_create
4602 1.1 christos #define bfd_elf32_bfd_final_link bfd_elf_final_link
4603 1.1 christos
4604 1.1 christos #define elf_backend_check_relocs elf_m68k_check_relocs
4605 1.1 christos #define elf_backend_always_size_sections \
4606 1.1 christos elf_m68k_always_size_sections
4607 1.1 christos #define elf_backend_adjust_dynamic_symbol \
4608 1.1 christos elf_m68k_adjust_dynamic_symbol
4609 1.1 christos #define elf_backend_size_dynamic_sections \
4610 1.1 christos elf_m68k_size_dynamic_sections
4611 1.1 christos #define elf_backend_final_write_processing elf_m68k_final_write_processing
4612 1.1 christos #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4613 1.1 christos #define elf_backend_relocate_section elf_m68k_relocate_section
4614 1.1 christos #define elf_backend_finish_dynamic_symbol \
4615 1.1 christos elf_m68k_finish_dynamic_symbol
4616 1.1 christos #define elf_backend_finish_dynamic_sections \
4617 1.1 christos elf_m68k_finish_dynamic_sections
4618 1.1 christos #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
4619 1.1.1.8 christos #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
4620 1.1 christos #define bfd_elf32_bfd_merge_private_bfd_data \
4621 1.1.1.8 christos elf32_m68k_merge_private_bfd_data
4622 1.1 christos #define bfd_elf32_bfd_set_private_flags \
4623 1.1.1.8 christos elf32_m68k_set_private_flags
4624 1.1 christos #define bfd_elf32_bfd_print_private_bfd_data \
4625 1.1 christos elf32_m68k_print_private_bfd_data
4626 1.1 christos #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
4627 1.1.1.2 christos #define elf_backend_plt_sym_val elf_m68k_plt_sym_val
4628 1.1.1.2 christos #define elf_backend_object_p elf32_m68k_object_p
4629 1.1 christos #define elf_backend_grok_prstatus elf_m68k_grok_prstatus
4630 1.1 christos #define elf_backend_grok_psinfo elf_m68k_grok_psinfo
4631 1.1 christos
4632 1.1 christos #define elf_backend_can_gc_sections 1
4633 1.1 christos #define elf_backend_can_refcount 1
4634 1.1 christos #define elf_backend_want_got_plt 1
4635 1.1 christos #define elf_backend_plt_readonly 1
4636 1.1 christos #define elf_backend_want_plt_sym 0
4637 1.1.1.7 christos #define elf_backend_got_header_size 12
4638 1.1 christos #define elf_backend_rela_normal 1
4639 1.1.1.8 christos #define elf_backend_dtrel_excludes_plt 1
4640 1.1.1.8 christos
4641 1.1 christos #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4642
4643 #include "elf32-target.h"
4644