elf32-m68k.c revision 1.10.12.1 1 1.1 skrll /* Motorola 68k series support for 32-bit ELF
2 1.10.12.1 pgoyette Copyright (C) 1993-2018 Free Software Foundation, Inc.
3 1.1 skrll
4 1.1 skrll This file is part of BFD, the Binary File Descriptor library.
5 1.1 skrll
6 1.1 skrll This program is free software; you can redistribute it and/or modify
7 1.1 skrll it under the terms of the GNU General Public License as published by
8 1.1 skrll the Free Software Foundation; either version 3 of the License, or
9 1.1 skrll (at your option) any later version.
10 1.1 skrll
11 1.1 skrll This program is distributed in the hope that it will be useful,
12 1.1 skrll but WITHOUT ANY WARRANTY; without even the implied warranty of
13 1.1 skrll MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 1.1 skrll GNU General Public License for more details.
15 1.1 skrll
16 1.1 skrll You should have received a copy of the GNU General Public License
17 1.1 skrll along with this program; if not, write to the Free Software
18 1.1 skrll Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 1.1 skrll MA 02110-1301, USA. */
20 1.1 skrll
21 1.1 skrll #include "sysdep.h"
22 1.1 skrll #include "bfd.h"
23 1.1 skrll #include "bfdlink.h"
24 1.1 skrll #include "libbfd.h"
25 1.1 skrll #include "elf-bfd.h"
26 1.1 skrll #include "elf/m68k.h"
27 1.1 skrll #include "opcode/m68k.h"
28 1.1 skrll
29 1.4 christos static bfd_boolean
30 1.4 christos elf_m68k_discard_copies (struct elf_link_hash_entry *, void *);
31 1.1 skrll
32 1.4 christos static reloc_howto_type howto_table[] =
33 1.4 christos {
34 1.10.12.1 pgoyette HOWTO(R_68K_NONE, 0, 3, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE),
35 1.10.12.1 pgoyette HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE),
36 1.10.12.1 pgoyette HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE),
37 1.10.12.1 pgoyette HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE),
38 1.10.12.1 pgoyette HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE),
39 1.10.12.1 pgoyette HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE),
40 1.10.12.1 pgoyette HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE),
41 1.10.12.1 pgoyette HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE),
42 1.10.12.1 pgoyette HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE),
43 1.10.12.1 pgoyette HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE),
44 1.10.12.1 pgoyette HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE),
45 1.10.12.1 pgoyette HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE),
46 1.10.12.1 pgoyette HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE),
47 1.10.12.1 pgoyette HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE),
48 1.10.12.1 pgoyette HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE),
49 1.10.12.1 pgoyette HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE),
50 1.10.12.1 pgoyette HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE),
51 1.10.12.1 pgoyette HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE),
52 1.10.12.1 pgoyette HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE),
53 1.10.12.1 pgoyette HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE),
54 1.10.12.1 pgoyette 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 1.10.12.1 pgoyette 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 1.10.12.1 pgoyette 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 skrll /* GNU extension to record C++ vtable hierarchy. */
58 1.1 skrll HOWTO (R_68K_GNU_VTINHERIT, /* type */
59 1.1 skrll 0, /* rightshift */
60 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
61 1.1 skrll 0, /* bitsize */
62 1.1 skrll FALSE, /* pc_relative */
63 1.1 skrll 0, /* bitpos */
64 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
65 1.1 skrll NULL, /* special_function */
66 1.1 skrll "R_68K_GNU_VTINHERIT", /* name */
67 1.1 skrll FALSE, /* partial_inplace */
68 1.1 skrll 0, /* src_mask */
69 1.1 skrll 0, /* dst_mask */
70 1.1 skrll FALSE),
71 1.1 skrll /* GNU extension to record C++ vtable member usage. */
72 1.1 skrll HOWTO (R_68K_GNU_VTENTRY, /* type */
73 1.1 skrll 0, /* rightshift */
74 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
75 1.1 skrll 0, /* bitsize */
76 1.1 skrll FALSE, /* pc_relative */
77 1.1 skrll 0, /* bitpos */
78 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
79 1.1 skrll _bfd_elf_rel_vtable_reloc_fn, /* special_function */
80 1.1 skrll "R_68K_GNU_VTENTRY", /* name */
81 1.1 skrll FALSE, /* partial_inplace */
82 1.1 skrll 0, /* src_mask */
83 1.1 skrll 0, /* dst_mask */
84 1.1 skrll FALSE),
85 1.3 christos
86 1.3 christos /* TLS general dynamic variable reference. */
87 1.3 christos HOWTO (R_68K_TLS_GD32, /* type */
88 1.3 christos 0, /* rightshift */
89 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
90 1.3 christos 32, /* bitsize */
91 1.3 christos FALSE, /* pc_relative */
92 1.3 christos 0, /* bitpos */
93 1.3 christos complain_overflow_bitfield, /* complain_on_overflow */
94 1.3 christos bfd_elf_generic_reloc, /* special_function */
95 1.3 christos "R_68K_TLS_GD32", /* name */
96 1.3 christos FALSE, /* partial_inplace */
97 1.3 christos 0, /* src_mask */
98 1.3 christos 0xffffffff, /* dst_mask */
99 1.3 christos FALSE), /* pcrel_offset */
100 1.3 christos
101 1.3 christos HOWTO (R_68K_TLS_GD16, /* type */
102 1.3 christos 0, /* rightshift */
103 1.3 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
104 1.3 christos 16, /* bitsize */
105 1.3 christos FALSE, /* pc_relative */
106 1.3 christos 0, /* bitpos */
107 1.3 christos complain_overflow_signed, /* complain_on_overflow */
108 1.3 christos bfd_elf_generic_reloc, /* special_function */
109 1.3 christos "R_68K_TLS_GD16", /* name */
110 1.3 christos FALSE, /* partial_inplace */
111 1.3 christos 0, /* src_mask */
112 1.3 christos 0x0000ffff, /* dst_mask */
113 1.3 christos FALSE), /* pcrel_offset */
114 1.3 christos
115 1.3 christos HOWTO (R_68K_TLS_GD8, /* type */
116 1.3 christos 0, /* rightshift */
117 1.3 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
118 1.3 christos 8, /* bitsize */
119 1.3 christos FALSE, /* pc_relative */
120 1.3 christos 0, /* bitpos */
121 1.3 christos complain_overflow_signed, /* complain_on_overflow */
122 1.3 christos bfd_elf_generic_reloc, /* special_function */
123 1.3 christos "R_68K_TLS_GD8", /* name */
124 1.3 christos FALSE, /* partial_inplace */
125 1.3 christos 0, /* src_mask */
126 1.3 christos 0x000000ff, /* dst_mask */
127 1.3 christos FALSE), /* pcrel_offset */
128 1.3 christos
129 1.3 christos /* TLS local dynamic variable reference. */
130 1.3 christos HOWTO (R_68K_TLS_LDM32, /* type */
131 1.3 christos 0, /* rightshift */
132 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
133 1.3 christos 32, /* bitsize */
134 1.3 christos FALSE, /* pc_relative */
135 1.3 christos 0, /* bitpos */
136 1.3 christos complain_overflow_bitfield, /* complain_on_overflow */
137 1.3 christos bfd_elf_generic_reloc, /* special_function */
138 1.3 christos "R_68K_TLS_LDM32", /* name */
139 1.3 christos FALSE, /* partial_inplace */
140 1.3 christos 0, /* src_mask */
141 1.3 christos 0xffffffff, /* dst_mask */
142 1.3 christos FALSE), /* pcrel_offset */
143 1.3 christos
144 1.3 christos HOWTO (R_68K_TLS_LDM16, /* type */
145 1.3 christos 0, /* rightshift */
146 1.3 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
147 1.3 christos 16, /* bitsize */
148 1.3 christos FALSE, /* pc_relative */
149 1.3 christos 0, /* bitpos */
150 1.3 christos complain_overflow_signed, /* complain_on_overflow */
151 1.3 christos bfd_elf_generic_reloc, /* special_function */
152 1.3 christos "R_68K_TLS_LDM16", /* name */
153 1.3 christos FALSE, /* partial_inplace */
154 1.3 christos 0, /* src_mask */
155 1.3 christos 0x0000ffff, /* dst_mask */
156 1.3 christos FALSE), /* pcrel_offset */
157 1.3 christos
158 1.3 christos HOWTO (R_68K_TLS_LDM8, /* type */
159 1.3 christos 0, /* rightshift */
160 1.3 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
161 1.3 christos 8, /* bitsize */
162 1.3 christos FALSE, /* pc_relative */
163 1.3 christos 0, /* bitpos */
164 1.3 christos complain_overflow_signed, /* complain_on_overflow */
165 1.3 christos bfd_elf_generic_reloc, /* special_function */
166 1.3 christos "R_68K_TLS_LDM8", /* name */
167 1.3 christos FALSE, /* partial_inplace */
168 1.3 christos 0, /* src_mask */
169 1.3 christos 0x000000ff, /* dst_mask */
170 1.3 christos FALSE), /* pcrel_offset */
171 1.3 christos
172 1.3 christos HOWTO (R_68K_TLS_LDO32, /* type */
173 1.3 christos 0, /* rightshift */
174 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
175 1.3 christos 32, /* bitsize */
176 1.3 christos FALSE, /* pc_relative */
177 1.3 christos 0, /* bitpos */
178 1.3 christos complain_overflow_bitfield, /* complain_on_overflow */
179 1.3 christos bfd_elf_generic_reloc, /* special_function */
180 1.3 christos "R_68K_TLS_LDO32", /* name */
181 1.3 christos FALSE, /* partial_inplace */
182 1.3 christos 0, /* src_mask */
183 1.3 christos 0xffffffff, /* dst_mask */
184 1.3 christos FALSE), /* pcrel_offset */
185 1.3 christos
186 1.3 christos HOWTO (R_68K_TLS_LDO16, /* type */
187 1.3 christos 0, /* rightshift */
188 1.3 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
189 1.3 christos 16, /* bitsize */
190 1.3 christos FALSE, /* pc_relative */
191 1.3 christos 0, /* bitpos */
192 1.3 christos complain_overflow_signed, /* complain_on_overflow */
193 1.3 christos bfd_elf_generic_reloc, /* special_function */
194 1.3 christos "R_68K_TLS_LDO16", /* name */
195 1.3 christos FALSE, /* partial_inplace */
196 1.3 christos 0, /* src_mask */
197 1.3 christos 0x0000ffff, /* dst_mask */
198 1.3 christos FALSE), /* pcrel_offset */
199 1.3 christos
200 1.3 christos HOWTO (R_68K_TLS_LDO8, /* type */
201 1.3 christos 0, /* rightshift */
202 1.3 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
203 1.3 christos 8, /* bitsize */
204 1.3 christos FALSE, /* pc_relative */
205 1.3 christos 0, /* bitpos */
206 1.3 christos complain_overflow_signed, /* complain_on_overflow */
207 1.3 christos bfd_elf_generic_reloc, /* special_function */
208 1.3 christos "R_68K_TLS_LDO8", /* name */
209 1.3 christos FALSE, /* partial_inplace */
210 1.3 christos 0, /* src_mask */
211 1.3 christos 0x000000ff, /* dst_mask */
212 1.3 christos FALSE), /* pcrel_offset */
213 1.3 christos
214 1.3 christos /* TLS initial execution variable reference. */
215 1.3 christos HOWTO (R_68K_TLS_IE32, /* type */
216 1.3 christos 0, /* rightshift */
217 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
218 1.3 christos 32, /* bitsize */
219 1.3 christos FALSE, /* pc_relative */
220 1.3 christos 0, /* bitpos */
221 1.3 christos complain_overflow_bitfield, /* complain_on_overflow */
222 1.3 christos bfd_elf_generic_reloc, /* special_function */
223 1.3 christos "R_68K_TLS_IE32", /* name */
224 1.3 christos FALSE, /* partial_inplace */
225 1.3 christos 0, /* src_mask */
226 1.3 christos 0xffffffff, /* dst_mask */
227 1.3 christos FALSE), /* pcrel_offset */
228 1.3 christos
229 1.3 christos HOWTO (R_68K_TLS_IE16, /* type */
230 1.3 christos 0, /* rightshift */
231 1.3 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
232 1.3 christos 16, /* bitsize */
233 1.3 christos FALSE, /* pc_relative */
234 1.3 christos 0, /* bitpos */
235 1.3 christos complain_overflow_signed, /* complain_on_overflow */
236 1.3 christos bfd_elf_generic_reloc, /* special_function */
237 1.3 christos "R_68K_TLS_IE16", /* name */
238 1.3 christos FALSE, /* partial_inplace */
239 1.3 christos 0, /* src_mask */
240 1.3 christos 0x0000ffff, /* dst_mask */
241 1.3 christos FALSE), /* pcrel_offset */
242 1.3 christos
243 1.3 christos HOWTO (R_68K_TLS_IE8, /* type */
244 1.3 christos 0, /* rightshift */
245 1.3 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
246 1.3 christos 8, /* bitsize */
247 1.3 christos FALSE, /* pc_relative */
248 1.3 christos 0, /* bitpos */
249 1.3 christos complain_overflow_signed, /* complain_on_overflow */
250 1.3 christos bfd_elf_generic_reloc, /* special_function */
251 1.3 christos "R_68K_TLS_IE8", /* name */
252 1.3 christos FALSE, /* partial_inplace */
253 1.3 christos 0, /* src_mask */
254 1.3 christos 0x000000ff, /* dst_mask */
255 1.3 christos FALSE), /* pcrel_offset */
256 1.3 christos
257 1.3 christos /* TLS local execution variable reference. */
258 1.3 christos HOWTO (R_68K_TLS_LE32, /* type */
259 1.3 christos 0, /* rightshift */
260 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
261 1.3 christos 32, /* bitsize */
262 1.3 christos FALSE, /* pc_relative */
263 1.3 christos 0, /* bitpos */
264 1.3 christos complain_overflow_bitfield, /* complain_on_overflow */
265 1.3 christos bfd_elf_generic_reloc, /* special_function */
266 1.3 christos "R_68K_TLS_LE32", /* name */
267 1.3 christos FALSE, /* partial_inplace */
268 1.3 christos 0, /* src_mask */
269 1.3 christos 0xffffffff, /* dst_mask */
270 1.3 christos FALSE), /* pcrel_offset */
271 1.3 christos
272 1.3 christos HOWTO (R_68K_TLS_LE16, /* type */
273 1.3 christos 0, /* rightshift */
274 1.3 christos 1, /* size (0 = byte, 1 = short, 2 = long) */
275 1.3 christos 16, /* bitsize */
276 1.3 christos FALSE, /* pc_relative */
277 1.3 christos 0, /* bitpos */
278 1.3 christos complain_overflow_signed, /* complain_on_overflow */
279 1.3 christos bfd_elf_generic_reloc, /* special_function */
280 1.3 christos "R_68K_TLS_LE16", /* name */
281 1.3 christos FALSE, /* partial_inplace */
282 1.3 christos 0, /* src_mask */
283 1.3 christos 0x0000ffff, /* dst_mask */
284 1.3 christos FALSE), /* pcrel_offset */
285 1.3 christos
286 1.3 christos HOWTO (R_68K_TLS_LE8, /* type */
287 1.3 christos 0, /* rightshift */
288 1.3 christos 0, /* size (0 = byte, 1 = short, 2 = long) */
289 1.3 christos 8, /* bitsize */
290 1.3 christos FALSE, /* pc_relative */
291 1.3 christos 0, /* bitpos */
292 1.3 christos complain_overflow_signed, /* complain_on_overflow */
293 1.3 christos bfd_elf_generic_reloc, /* special_function */
294 1.3 christos "R_68K_TLS_LE8", /* name */
295 1.3 christos FALSE, /* partial_inplace */
296 1.3 christos 0, /* src_mask */
297 1.3 christos 0x000000ff, /* dst_mask */
298 1.3 christos FALSE), /* pcrel_offset */
299 1.3 christos
300 1.3 christos /* TLS GD/LD dynamic relocations. */
301 1.3 christos HOWTO (R_68K_TLS_DTPMOD32, /* type */
302 1.3 christos 0, /* rightshift */
303 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
304 1.3 christos 32, /* bitsize */
305 1.3 christos FALSE, /* pc_relative */
306 1.3 christos 0, /* bitpos */
307 1.3 christos complain_overflow_dont, /* complain_on_overflow */
308 1.3 christos bfd_elf_generic_reloc, /* special_function */
309 1.3 christos "R_68K_TLS_DTPMOD32", /* name */
310 1.3 christos FALSE, /* partial_inplace */
311 1.3 christos 0, /* src_mask */
312 1.3 christos 0xffffffff, /* dst_mask */
313 1.3 christos FALSE), /* pcrel_offset */
314 1.3 christos
315 1.3 christos HOWTO (R_68K_TLS_DTPREL32, /* type */
316 1.3 christos 0, /* rightshift */
317 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
318 1.3 christos 32, /* bitsize */
319 1.3 christos FALSE, /* pc_relative */
320 1.3 christos 0, /* bitpos */
321 1.3 christos complain_overflow_dont, /* complain_on_overflow */
322 1.3 christos bfd_elf_generic_reloc, /* special_function */
323 1.3 christos "R_68K_TLS_DTPREL32", /* name */
324 1.3 christos FALSE, /* partial_inplace */
325 1.3 christos 0, /* src_mask */
326 1.3 christos 0xffffffff, /* dst_mask */
327 1.3 christos FALSE), /* pcrel_offset */
328 1.3 christos
329 1.3 christos HOWTO (R_68K_TLS_TPREL32, /* type */
330 1.3 christos 0, /* rightshift */
331 1.3 christos 2, /* size (0 = byte, 1 = short, 2 = long) */
332 1.3 christos 32, /* bitsize */
333 1.3 christos FALSE, /* pc_relative */
334 1.3 christos 0, /* bitpos */
335 1.3 christos complain_overflow_dont, /* complain_on_overflow */
336 1.3 christos bfd_elf_generic_reloc, /* special_function */
337 1.3 christos "R_68K_TLS_TPREL32", /* name */
338 1.3 christos FALSE, /* partial_inplace */
339 1.3 christos 0, /* src_mask */
340 1.3 christos 0xffffffff, /* dst_mask */
341 1.3 christos FALSE), /* pcrel_offset */
342 1.1 skrll };
343 1.1 skrll
344 1.1 skrll static void
345 1.3 christos rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
346 1.1 skrll {
347 1.3 christos unsigned int indx = ELF32_R_TYPE (dst->r_info);
348 1.3 christos
349 1.3 christos if (indx >= (unsigned int) R_68K_max)
350 1.3 christos {
351 1.10.12.1 pgoyette /* xgettext:c-format */
352 1.10.12.1 pgoyette _bfd_error_handler (_("%B: invalid relocation type %d"),
353 1.10.12.1 pgoyette abfd, (int) indx);
354 1.3 christos indx = R_68K_NONE;
355 1.3 christos }
356 1.3 christos cache_ptr->howto = &howto_table[indx];
357 1.1 skrll }
358 1.1 skrll
359 1.1 skrll #define elf_info_to_howto rtype_to_howto
360 1.1 skrll
361 1.1 skrll static const struct
362 1.1 skrll {
363 1.1 skrll bfd_reloc_code_real_type bfd_val;
364 1.1 skrll int elf_val;
365 1.3 christos }
366 1.3 christos reloc_map[] =
367 1.3 christos {
368 1.1 skrll { BFD_RELOC_NONE, R_68K_NONE },
369 1.1 skrll { BFD_RELOC_32, R_68K_32 },
370 1.1 skrll { BFD_RELOC_16, R_68K_16 },
371 1.1 skrll { BFD_RELOC_8, R_68K_8 },
372 1.1 skrll { BFD_RELOC_32_PCREL, R_68K_PC32 },
373 1.1 skrll { BFD_RELOC_16_PCREL, R_68K_PC16 },
374 1.1 skrll { BFD_RELOC_8_PCREL, R_68K_PC8 },
375 1.1 skrll { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
376 1.1 skrll { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
377 1.1 skrll { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
378 1.1 skrll { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
379 1.1 skrll { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
380 1.1 skrll { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
381 1.1 skrll { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
382 1.1 skrll { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
383 1.1 skrll { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
384 1.1 skrll { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
385 1.1 skrll { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
386 1.1 skrll { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
387 1.1 skrll { BFD_RELOC_NONE, R_68K_COPY },
388 1.1 skrll { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
389 1.1 skrll { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
390 1.1 skrll { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
391 1.1 skrll { BFD_RELOC_CTOR, R_68K_32 },
392 1.1 skrll { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT },
393 1.1 skrll { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY },
394 1.3 christos { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 },
395 1.3 christos { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 },
396 1.3 christos { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 },
397 1.3 christos { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 },
398 1.3 christos { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 },
399 1.3 christos { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 },
400 1.3 christos { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 },
401 1.3 christos { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 },
402 1.3 christos { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 },
403 1.3 christos { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 },
404 1.3 christos { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 },
405 1.3 christos { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 },
406 1.3 christos { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 },
407 1.3 christos { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 },
408 1.3 christos { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 },
409 1.1 skrll };
410 1.1 skrll
411 1.1 skrll static reloc_howto_type *
412 1.4 christos reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
413 1.4 christos bfd_reloc_code_real_type code)
414 1.1 skrll {
415 1.1 skrll unsigned int i;
416 1.1 skrll for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
417 1.1 skrll {
418 1.1 skrll if (reloc_map[i].bfd_val == code)
419 1.1 skrll return &howto_table[reloc_map[i].elf_val];
420 1.1 skrll }
421 1.1 skrll return 0;
422 1.1 skrll }
423 1.1 skrll
424 1.1 skrll static reloc_howto_type *
425 1.1 skrll reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
426 1.1 skrll {
427 1.1 skrll unsigned int i;
428 1.1 skrll
429 1.1 skrll for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++)
430 1.1 skrll if (howto_table[i].name != NULL
431 1.1 skrll && strcasecmp (howto_table[i].name, r_name) == 0)
432 1.1 skrll return &howto_table[i];
433 1.1 skrll
434 1.1 skrll return NULL;
435 1.1 skrll }
436 1.1 skrll
437 1.1 skrll #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
438 1.1 skrll #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup
439 1.1 skrll #define ELF_ARCH bfd_arch_m68k
440 1.3 christos #define ELF_TARGET_ID M68K_ELF_DATA
441 1.1 skrll
442 1.1 skrll /* Functions for the m68k ELF linker. */
444 1.1 skrll
445 1.1 skrll /* The name of the dynamic interpreter. This is put in the .interp
446 1.1 skrll section. */
447 1.1 skrll
448 1.1 skrll #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
449 1.1 skrll
450 1.1 skrll /* Describes one of the various PLT styles. */
451 1.1 skrll
452 1.1 skrll struct elf_m68k_plt_info
453 1.1 skrll {
454 1.1 skrll /* The size of each PLT entry. */
455 1.1 skrll bfd_vma size;
456 1.1 skrll
457 1.1 skrll /* The template for the first PLT entry. */
458 1.1 skrll const bfd_byte *plt0_entry;
459 1.1 skrll
460 1.1 skrll /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations.
461 1.1 skrll The comments by each member indicate the value that the relocation
462 1.1 skrll is against. */
463 1.1 skrll struct {
464 1.1 skrll unsigned int got4; /* .got + 4 */
465 1.1 skrll unsigned int got8; /* .got + 8 */
466 1.1 skrll } plt0_relocs;
467 1.1 skrll
468 1.1 skrll /* The template for a symbol's PLT entry. */
469 1.1 skrll const bfd_byte *symbol_entry;
470 1.1 skrll
471 1.1 skrll /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations.
472 1.1 skrll The comments by each member indicate the value that the relocation
473 1.1 skrll is against. */
474 1.1 skrll struct {
475 1.1 skrll unsigned int got; /* the symbol's .got.plt entry */
476 1.1 skrll unsigned int plt; /* .plt */
477 1.1 skrll } symbol_relocs;
478 1.1 skrll
479 1.1 skrll /* The offset of the resolver stub from the start of SYMBOL_ENTRY.
480 1.1 skrll The stub starts with "move.l #relocoffset,%d0". */
481 1.1 skrll bfd_vma symbol_resolve_entry;
482 1.1 skrll };
483 1.1 skrll
484 1.1 skrll /* The size in bytes of an entry in the procedure linkage table. */
485 1.1 skrll
486 1.1 skrll #define PLT_ENTRY_SIZE 20
487 1.1 skrll
488 1.1 skrll /* The first entry in a procedure linkage table looks like this. See
489 1.1 skrll the SVR4 ABI m68k supplement to see how this works. */
490 1.1 skrll
491 1.1 skrll static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
492 1.1 skrll {
493 1.1 skrll 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
494 1.1 skrll 0, 0, 0, 2, /* + (.got + 4) - . */
495 1.1 skrll 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
496 1.1 skrll 0, 0, 0, 2, /* + (.got + 8) - . */
497 1.1 skrll 0, 0, 0, 0 /* pad out to 20 bytes. */
498 1.1 skrll };
499 1.1 skrll
500 1.1 skrll /* Subsequent entries in a procedure linkage table look like this. */
501 1.1 skrll
502 1.1 skrll static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
503 1.1 skrll {
504 1.1 skrll 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */
505 1.1 skrll 0, 0, 0, 2, /* + (.got.plt entry) - . */
506 1.1 skrll 0x2f, 0x3c, /* move.l #offset,-(%sp) */
507 1.1 skrll 0, 0, 0, 0, /* + reloc index */
508 1.1 skrll 0x60, 0xff, /* bra.l .plt */
509 1.1 skrll 0, 0, 0, 0 /* + .plt - . */
510 1.1 skrll };
511 1.10.12.1 pgoyette
512 1.10.12.1 pgoyette static const struct elf_m68k_plt_info elf_m68k_plt_info =
513 1.1 skrll {
514 1.1 skrll PLT_ENTRY_SIZE,
515 1.1 skrll elf_m68k_plt0_entry, { 4, 12 },
516 1.1 skrll elf_m68k_plt_entry, { 4, 16 }, 8
517 1.1 skrll };
518 1.1 skrll
519 1.1 skrll #define ISAB_PLT_ENTRY_SIZE 24
520 1.1 skrll
521 1.1 skrll static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] =
522 1.10.12.1 pgoyette {
523 1.10.12.1 pgoyette 0x20, 0x3c, /* move.l #offset,%d0 */
524 1.1 skrll 0, 0, 0, 0, /* + (.got + 4) - . */
525 1.10.12.1 pgoyette 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */
526 1.10.12.1 pgoyette 0x20, 0x3c, /* move.l #offset,%d0 */
527 1.1 skrll 0, 0, 0, 0, /* + (.got + 8) - . */
528 1.10.12.1 pgoyette 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
529 1.1 skrll 0x4e, 0xd0, /* jmp (%a0) */
530 1.1 skrll 0x4e, 0x71 /* nop */
531 1.1 skrll };
532 1.1 skrll
533 1.1 skrll /* Subsequent entries in a procedure linkage table look like this. */
534 1.1 skrll
535 1.1 skrll static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] =
536 1.10.12.1 pgoyette {
537 1.10.12.1 pgoyette 0x20, 0x3c, /* move.l #offset,%d0 */
538 1.1 skrll 0, 0, 0, 0, /* + (.got.plt entry) - . */
539 1.10.12.1 pgoyette 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
540 1.10.12.1 pgoyette 0x4e, 0xd0, /* jmp (%a0) */
541 1.10.12.1 pgoyette 0x2f, 0x3c, /* move.l #offset,-(%sp) */
542 1.10.12.1 pgoyette 0, 0, 0, 0, /* + reloc index */
543 1.10.12.1 pgoyette 0x60, 0xff, /* bra.l .plt */
544 1.1 skrll 0, 0, 0, 0 /* + .plt - . */
545 1.1 skrll };
546 1.10.12.1 pgoyette
547 1.10.12.1 pgoyette static const struct elf_m68k_plt_info elf_isab_plt_info =
548 1.1 skrll {
549 1.1 skrll ISAB_PLT_ENTRY_SIZE,
550 1.1 skrll elf_isab_plt0_entry, { 2, 12 },
551 1.1 skrll elf_isab_plt_entry, { 2, 20 }, 12
552 1.1 skrll };
553 1.1 skrll
554 1.1 skrll #define ISAC_PLT_ENTRY_SIZE 24
555 1.1 skrll
556 1.1 skrll static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] =
557 1.1 skrll {
558 1.1 skrll 0x20, 0x3c, /* move.l #offset,%d0 */
559 1.1 skrll 0, 0, 0, 0, /* replaced with .got + 4 - . */
560 1.1 skrll 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */
561 1.1 skrll 0x20, 0x3c, /* move.l #offset,%d0 */
562 1.1 skrll 0, 0, 0, 0, /* replaced with .got + 8 - . */
563 1.1 skrll 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
564 1.1 skrll 0x4e, 0xd0, /* jmp (%a0) */
565 1.1 skrll 0x4e, 0x71 /* nop */
566 1.1 skrll };
567 1.1 skrll
568 1.1 skrll /* Subsequent entries in a procedure linkage table look like this. */
569 1.1 skrll
570 1.1 skrll static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] =
571 1.1 skrll {
572 1.1 skrll 0x20, 0x3c, /* move.l #offset,%d0 */
573 1.1 skrll 0, 0, 0, 0, /* replaced with (.got entry) - . */
574 1.1 skrll 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */
575 1.1 skrll 0x4e, 0xd0, /* jmp (%a0) */
576 1.1 skrll 0x2f, 0x3c, /* move.l #offset,-(%sp) */
577 1.1 skrll 0, 0, 0, 0, /* replaced with offset into relocation table */
578 1.10.12.1 pgoyette 0x61, 0xff, /* bsr.l .plt */
579 1.1 skrll 0, 0, 0, 0 /* replaced with .plt - . */
580 1.1 skrll };
581 1.10.12.1 pgoyette
582 1.10.12.1 pgoyette static const struct elf_m68k_plt_info elf_isac_plt_info =
583 1.1 skrll {
584 1.1 skrll ISAC_PLT_ENTRY_SIZE,
585 1.1 skrll elf_isac_plt0_entry, { 2, 12},
586 1.1 skrll elf_isac_plt_entry, { 2, 20 }, 12
587 1.1 skrll };
588 1.1 skrll
589 1.1 skrll #define CPU32_PLT_ENTRY_SIZE 24
590 1.1 skrll /* Procedure linkage table entries for the cpu32 */
591 1.1 skrll static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] =
592 1.1 skrll {
593 1.10.12.1 pgoyette 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
594 1.1 skrll 0, 0, 0, 2, /* + (.got + 4) - . */
595 1.10.12.1 pgoyette 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
596 1.10.12.1 pgoyette 0, 0, 0, 2, /* + (.got + 8) - . */
597 1.10.12.1 pgoyette 0x4e, 0xd1, /* jmp %a1@ */
598 1.1 skrll 0, 0, 0, 0, /* pad out to 24 bytes. */
599 1.1 skrll 0, 0
600 1.1 skrll };
601 1.1 skrll
602 1.1 skrll static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] =
603 1.1 skrll {
604 1.10.12.1 pgoyette 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */
605 1.10.12.1 pgoyette 0, 0, 0, 2, /* + (.got.plt entry) - . */
606 1.10.12.1 pgoyette 0x4e, 0xd1, /* jmp %a1@ */
607 1.10.12.1 pgoyette 0x2f, 0x3c, /* move.l #offset,-(%sp) */
608 1.10.12.1 pgoyette 0, 0, 0, 0, /* + reloc index */
609 1.10.12.1 pgoyette 0x60, 0xff, /* bra.l .plt */
610 1.1 skrll 0, 0, 0, 0, /* + .plt - . */
611 1.1 skrll 0, 0
612 1.1 skrll };
613 1.10.12.1 pgoyette
614 1.10.12.1 pgoyette static const struct elf_m68k_plt_info elf_cpu32_plt_info =
615 1.1 skrll {
616 1.1 skrll CPU32_PLT_ENTRY_SIZE,
617 1.1 skrll elf_cpu32_plt0_entry, { 4, 12 },
618 1.1 skrll elf_cpu32_plt_entry, { 4, 18 }, 10
619 1.1 skrll };
620 1.1 skrll
621 1.1 skrll /* The m68k linker needs to keep track of the number of relocs that it
622 1.1 skrll decides to copy in check_relocs for each symbol. This is so that it
623 1.1 skrll can discard PC relative relocs if it doesn't need them when linking
624 1.1 skrll with -Bsymbolic. We store the information in a field extending the
625 1.1 skrll regular ELF linker hash table. */
626 1.1 skrll
627 1.1 skrll /* This structure keeps track of the number of PC relative relocs we have
628 1.1 skrll copied for a given symbol. */
629 1.1 skrll
630 1.1 skrll struct elf_m68k_pcrel_relocs_copied
631 1.1 skrll {
632 1.1 skrll /* Next section. */
633 1.1 skrll struct elf_m68k_pcrel_relocs_copied *next;
634 1.1 skrll /* A section in dynobj. */
635 1.1 skrll asection *section;
636 1.1 skrll /* Number of relocs copied in this section. */
637 1.1 skrll bfd_size_type count;
638 1.1 skrll };
639 1.1 skrll
640 1.1 skrll /* Forward declaration. */
641 1.1 skrll struct elf_m68k_got_entry;
642 1.1 skrll
643 1.1 skrll /* m68k ELF linker hash entry. */
644 1.1 skrll
645 1.1 skrll struct elf_m68k_link_hash_entry
646 1.1 skrll {
647 1.1 skrll struct elf_link_hash_entry root;
648 1.1 skrll
649 1.1 skrll /* Number of PC relative relocs copied for this symbol. */
650 1.1 skrll struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied;
651 1.1 skrll
652 1.1 skrll /* Key to got_entries. */
653 1.1 skrll unsigned long got_entry_key;
654 1.1 skrll
655 1.1 skrll /* List of GOT entries for this symbol. This list is build during
656 1.1 skrll offset finalization and is used within elf_m68k_finish_dynamic_symbol
657 1.1 skrll to traverse all GOT entries for a particular symbol.
658 1.1 skrll
659 1.1 skrll ??? We could've used root.got.glist field instead, but having
660 1.1 skrll a separate field is cleaner. */
661 1.1 skrll struct elf_m68k_got_entry *glist;
662 1.1 skrll };
663 1.1 skrll
664 1.1 skrll #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent))
665 1.1 skrll
666 1.1 skrll /* Key part of GOT entry in hashtable. */
667 1.1 skrll struct elf_m68k_got_entry_key
668 1.1 skrll {
669 1.1 skrll /* BFD in which this symbol was defined. NULL for global symbols. */
670 1.1 skrll const bfd *bfd;
671 1.1 skrll
672 1.1 skrll /* Symbol index. Either local symbol index or h->got_entry_key. */
673 1.3 christos unsigned long symndx;
674 1.3 christos
675 1.3 christos /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32},
676 1.3 christos R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}.
677 1.3 christos
678 1.3 christos From perspective of hashtable key, only elf_m68k_got_reloc_type (type)
679 1.3 christos matters. That is, we distinguish between, say, R_68K_GOT16O
680 1.3 christos and R_68K_GOT32O when allocating offsets, but they are considered to be
681 1.3 christos the same when searching got->entries. */
682 1.1 skrll enum elf_m68k_reloc_type type;
683 1.1 skrll };
684 1.3 christos
685 1.3 christos /* Size of the GOT offset suitable for relocation. */
686 1.3 christos enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST };
687 1.1 skrll
688 1.1 skrll /* Entry of the GOT. */
689 1.1 skrll struct elf_m68k_got_entry
690 1.1 skrll {
691 1.1 skrll /* GOT entries are put into a got->entries hashtable. This is the key. */
692 1.1 skrll struct elf_m68k_got_entry_key key_;
693 1.1 skrll
694 1.1 skrll /* GOT entry data. We need s1 before offset finalization and s2 after. */
695 1.1 skrll union
696 1.1 skrll {
697 1.1 skrll struct
698 1.10.12.1 pgoyette {
699 1.1 skrll /* Number of times this entry is referenced. */
700 1.1 skrll bfd_vma refcount;
701 1.1 skrll } s1;
702 1.1 skrll
703 1.1 skrll struct
704 1.1 skrll {
705 1.10.12.1 pgoyette /* Offset from the start of .got section. To calculate offset relative
706 1.1 skrll to GOT pointer one should subtract got->offset from this value. */
707 1.1 skrll bfd_vma offset;
708 1.1 skrll
709 1.1 skrll /* Pointer to the next GOT entry for this global symbol.
710 1.1 skrll Symbols have at most one entry in one GOT, but might
711 1.1 skrll have entries in more than one GOT.
712 1.1 skrll Root of this list is h->glist.
713 1.1 skrll NULL for local symbols. */
714 1.1 skrll struct elf_m68k_got_entry *next;
715 1.1 skrll } s2;
716 1.1 skrll } u;
717 1.1 skrll };
718 1.3 christos
719 1.3 christos /* Return representative type for relocation R_TYPE.
720 1.3 christos This is used to avoid enumerating many relocations in comparisons,
721 1.3 christos switches etc. */
722 1.3 christos
723 1.3 christos static enum elf_m68k_reloc_type
724 1.3 christos elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type)
725 1.3 christos {
726 1.3 christos switch (r_type)
727 1.3 christos {
728 1.3 christos /* In most cases R_68K_GOTx relocations require the very same
729 1.3 christos handling as R_68K_GOT32O relocation. In cases when we need
730 1.3 christos to distinguish between the two, we use explicitly compare against
731 1.3 christos r_type. */
732 1.3 christos case R_68K_GOT32:
733 1.3 christos case R_68K_GOT16:
734 1.3 christos case R_68K_GOT8:
735 1.3 christos case R_68K_GOT32O:
736 1.3 christos case R_68K_GOT16O:
737 1.3 christos case R_68K_GOT8O:
738 1.3 christos return R_68K_GOT32O;
739 1.3 christos
740 1.3 christos case R_68K_TLS_GD32:
741 1.3 christos case R_68K_TLS_GD16:
742 1.3 christos case R_68K_TLS_GD8:
743 1.3 christos return R_68K_TLS_GD32;
744 1.3 christos
745 1.3 christos case R_68K_TLS_LDM32:
746 1.3 christos case R_68K_TLS_LDM16:
747 1.3 christos case R_68K_TLS_LDM8:
748 1.3 christos return R_68K_TLS_LDM32;
749 1.3 christos
750 1.3 christos case R_68K_TLS_IE32:
751 1.3 christos case R_68K_TLS_IE16:
752 1.3 christos case R_68K_TLS_IE8:
753 1.3 christos return R_68K_TLS_IE32;
754 1.3 christos
755 1.3 christos default:
756 1.3 christos BFD_ASSERT (FALSE);
757 1.3 christos return 0;
758 1.3 christos }
759 1.3 christos }
760 1.3 christos
761 1.3 christos /* Return size of the GOT entry offset for relocation R_TYPE. */
762 1.3 christos
763 1.3 christos static enum elf_m68k_got_offset_size
764 1.3 christos elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type)
765 1.3 christos {
766 1.3 christos switch (r_type)
767 1.3 christos {
768 1.3 christos case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8:
769 1.3 christos case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32:
770 1.3 christos case R_68K_TLS_IE32:
771 1.3 christos return R_32;
772 1.3 christos
773 1.3 christos case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16:
774 1.3 christos case R_68K_TLS_IE16:
775 1.3 christos return R_16;
776 1.3 christos
777 1.3 christos case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8:
778 1.3 christos case R_68K_TLS_IE8:
779 1.3 christos return R_8;
780 1.3 christos
781 1.3 christos default:
782 1.3 christos BFD_ASSERT (FALSE);
783 1.3 christos return 0;
784 1.3 christos }
785 1.3 christos }
786 1.3 christos
787 1.3 christos /* Return number of GOT entries we need to allocate in GOT for
788 1.3 christos relocation R_TYPE. */
789 1.3 christos
790 1.3 christos static bfd_vma
791 1.3 christos elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type)
792 1.3 christos {
793 1.3 christos switch (elf_m68k_reloc_got_type (r_type))
794 1.3 christos {
795 1.3 christos case R_68K_GOT32O:
796 1.3 christos case R_68K_TLS_IE32:
797 1.3 christos return 1;
798 1.3 christos
799 1.3 christos case R_68K_TLS_GD32:
800 1.3 christos case R_68K_TLS_LDM32:
801 1.3 christos return 2;
802 1.3 christos
803 1.3 christos default:
804 1.3 christos BFD_ASSERT (FALSE);
805 1.3 christos return 0;
806 1.3 christos }
807 1.3 christos }
808 1.3 christos
809 1.3 christos /* Return TRUE if relocation R_TYPE is a TLS one. */
810 1.3 christos
811 1.3 christos static bfd_boolean
812 1.3 christos elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type)
813 1.3 christos {
814 1.3 christos switch (r_type)
815 1.3 christos {
816 1.3 christos case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8:
817 1.3 christos case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8:
818 1.3 christos case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8:
819 1.3 christos case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8:
820 1.3 christos case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8:
821 1.3 christos case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32:
822 1.3 christos return TRUE;
823 1.3 christos
824 1.3 christos default:
825 1.3 christos return FALSE;
826 1.3 christos }
827 1.3 christos }
828 1.1 skrll
829 1.1 skrll /* Data structure representing a single GOT. */
830 1.1 skrll struct elf_m68k_got
831 1.1 skrll {
832 1.1 skrll /* Hashtable of 'struct elf_m68k_got_entry's.
833 1.1 skrll Starting size of this table is the maximum number of
834 1.1 skrll R_68K_GOT8O entries. */
835 1.1 skrll htab_t entries;
836 1.3 christos
837 1.3 christos /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require
838 1.1 skrll several GOT slots.
839 1.3 christos
840 1.3 christos n_slots[R_8] is the count of R_8 slots in this GOT.
841 1.3 christos n_slots[R_16] is the cumulative count of R_8 and R_16 slots
842 1.3 christos in this GOT.
843 1.3 christos n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots
844 1.3 christos in this GOT. This is the total number of slots. */
845 1.3 christos bfd_vma n_slots[R_LAST];
846 1.3 christos
847 1.1 skrll /* Number of local (entry->key_.h == NULL) slots in this GOT.
848 1.1 skrll This is only used to properly calculate size of .rela.got section;
849 1.3 christos see elf_m68k_partition_multi_got. */
850 1.1 skrll bfd_vma local_n_slots;
851 1.1 skrll
852 1.1 skrll /* Offset of this GOT relative to beginning of .got section. */
853 1.1 skrll bfd_vma offset;
854 1.1 skrll };
855 1.1 skrll
856 1.1 skrll /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */
857 1.1 skrll struct elf_m68k_bfd2got_entry
858 1.1 skrll {
859 1.1 skrll /* BFD. */
860 1.1 skrll const bfd *bfd;
861 1.1 skrll
862 1.1 skrll /* Assigned GOT. Before partitioning multi-GOT each BFD has its own
863 1.1 skrll GOT structure. After partitioning several BFD's might [and often do]
864 1.1 skrll share a single GOT. */
865 1.1 skrll struct elf_m68k_got *got;
866 1.1 skrll };
867 1.1 skrll
868 1.1 skrll /* The main data structure holding all the pieces. */
869 1.1 skrll struct elf_m68k_multi_got
870 1.1 skrll {
871 1.1 skrll /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry
872 1.1 skrll here, then it doesn't need a GOT (this includes the case of a BFD
873 1.1 skrll having an empty GOT).
874 1.1 skrll
875 1.1 skrll ??? This hashtable can be replaced by an array indexed by bfd->id. */
876 1.1 skrll htab_t bfd2got;
877 1.1 skrll
878 1.1 skrll /* Next symndx to assign a global symbol.
879 1.1 skrll h->got_entry_key is initialized from this counter. */
880 1.1 skrll unsigned long global_symndx;
881 1.1 skrll };
882 1.1 skrll
883 1.1 skrll /* m68k ELF linker hash table. */
884 1.1 skrll
885 1.1 skrll struct elf_m68k_link_hash_table
886 1.1 skrll {
887 1.1 skrll struct elf_link_hash_table root;
888 1.3 christos
889 1.3 christos /* Small local sym cache. */
890 1.1 skrll struct sym_cache sym_cache;
891 1.1 skrll
892 1.1 skrll /* The PLT format used by this link, or NULL if the format has not
893 1.1 skrll yet been chosen. */
894 1.1 skrll const struct elf_m68k_plt_info *plt_info;
895 1.1 skrll
896 1.1 skrll /* True, if GP is loaded within each function which uses it.
897 1.1 skrll Set to TRUE when GOT negative offsets or multi-GOT is enabled. */
898 1.1 skrll bfd_boolean local_gp_p;
899 1.1 skrll
900 1.1 skrll /* Switch controlling use of negative offsets to double the size of GOTs. */
901 1.1 skrll bfd_boolean use_neg_got_offsets_p;
902 1.1 skrll
903 1.1 skrll /* Switch controlling generation of multiple GOTs. */
904 1.1 skrll bfd_boolean allow_multigot_p;
905 1.1 skrll
906 1.1 skrll /* Multi-GOT data structure. */
907 1.1 skrll struct elf_m68k_multi_got multi_got_;
908 1.1 skrll };
909 1.1 skrll
910 1.1 skrll /* Get the m68k ELF linker hash table from a link_info structure. */
911 1.1 skrll
912 1.3 christos #define elf_m68k_hash_table(p) \
913 1.3 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
914 1.1 skrll == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL)
915 1.1 skrll
916 1.1 skrll /* Shortcut to multi-GOT data. */
917 1.1 skrll #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_)
918 1.1 skrll
919 1.1 skrll /* Create an entry in an m68k ELF linker hash table. */
920 1.1 skrll
921 1.3 christos static struct bfd_hash_entry *
922 1.3 christos elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry,
923 1.3 christos struct bfd_hash_table *table,
924 1.1 skrll const char *string)
925 1.1 skrll {
926 1.1 skrll struct bfd_hash_entry *ret = entry;
927 1.1 skrll
928 1.1 skrll /* Allocate the structure if it has not already been allocated by a
929 1.1 skrll subclass. */
930 1.1 skrll if (ret == NULL)
931 1.1 skrll ret = bfd_hash_allocate (table,
932 1.1 skrll sizeof (struct elf_m68k_link_hash_entry));
933 1.1 skrll if (ret == NULL)
934 1.1 skrll return ret;
935 1.1 skrll
936 1.1 skrll /* Call the allocation method of the superclass. */
937 1.1 skrll ret = _bfd_elf_link_hash_newfunc (ret, table, string);
938 1.1 skrll if (ret != NULL)
939 1.1 skrll {
940 1.1 skrll elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL;
941 1.1 skrll elf_m68k_hash_entry (ret)->got_entry_key = 0;
942 1.1 skrll elf_m68k_hash_entry (ret)->glist = NULL;
943 1.1 skrll }
944 1.1 skrll
945 1.1 skrll return ret;
946 1.1 skrll }
947 1.6 christos
948 1.6 christos /* Destroy an m68k ELF linker hash table. */
949 1.6 christos
950 1.6 christos static void
951 1.6 christos elf_m68k_link_hash_table_free (bfd *obfd)
952 1.6 christos {
953 1.6 christos struct elf_m68k_link_hash_table *htab;
954 1.6 christos
955 1.6 christos htab = (struct elf_m68k_link_hash_table *) obfd->link.hash;
956 1.6 christos
957 1.6 christos if (htab->multi_got_.bfd2got != NULL)
958 1.6 christos {
959 1.6 christos htab_delete (htab->multi_got_.bfd2got);
960 1.6 christos htab->multi_got_.bfd2got = NULL;
961 1.6 christos }
962 1.6 christos _bfd_elf_link_hash_table_free (obfd);
963 1.6 christos }
964 1.1 skrll
965 1.1 skrll /* Create an m68k ELF linker hash table. */
966 1.1 skrll
967 1.3 christos static struct bfd_link_hash_table *
968 1.1 skrll elf_m68k_link_hash_table_create (bfd *abfd)
969 1.1 skrll {
970 1.1 skrll struct elf_m68k_link_hash_table *ret;
971 1.1 skrll bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table);
972 1.6 christos
973 1.1 skrll ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt);
974 1.1 skrll if (ret == (struct elf_m68k_link_hash_table *) NULL)
975 1.1 skrll return NULL;
976 1.1 skrll
977 1.1 skrll if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
978 1.3 christos elf_m68k_link_hash_newfunc,
979 1.3 christos sizeof (struct elf_m68k_link_hash_entry),
980 1.1 skrll M68K_ELF_DATA))
981 1.1 skrll {
982 1.1 skrll free (ret);
983 1.1 skrll return NULL;
984 1.6 christos }
985 1.1 skrll ret->root.root.hash_table_free = elf_m68k_link_hash_table_free;
986 1.1 skrll
987 1.1 skrll ret->multi_got_.global_symndx = 1;
988 1.1 skrll
989 1.1 skrll return &ret->root.root;
990 1.1 skrll }
991 1.1 skrll
992 1.1 skrll /* Set the right machine number. */
993 1.1 skrll
994 1.1 skrll static bfd_boolean
995 1.1 skrll elf32_m68k_object_p (bfd *abfd)
996 1.1 skrll {
997 1.1 skrll unsigned int mach = 0;
998 1.1 skrll unsigned features = 0;
999 1.1 skrll flagword eflags = elf_elfheader (abfd)->e_flags;
1000 1.1 skrll
1001 1.1 skrll if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1002 1.1 skrll features |= m68000;
1003 1.1 skrll else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1004 1.1 skrll features |= cpu32;
1005 1.1 skrll else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1006 1.1 skrll features |= fido_a;
1007 1.1 skrll else
1008 1.1 skrll {
1009 1.1 skrll switch (eflags & EF_M68K_CF_ISA_MASK)
1010 1.1 skrll {
1011 1.1 skrll case EF_M68K_CF_ISA_A_NODIV:
1012 1.1 skrll features |= mcfisa_a;
1013 1.1 skrll break;
1014 1.1 skrll case EF_M68K_CF_ISA_A:
1015 1.1 skrll features |= mcfisa_a|mcfhwdiv;
1016 1.1 skrll break;
1017 1.1 skrll case EF_M68K_CF_ISA_A_PLUS:
1018 1.1 skrll features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp;
1019 1.1 skrll break;
1020 1.1 skrll case EF_M68K_CF_ISA_B_NOUSP:
1021 1.1 skrll features |= mcfisa_a|mcfisa_b|mcfhwdiv;
1022 1.1 skrll break;
1023 1.1 skrll case EF_M68K_CF_ISA_B:
1024 1.1 skrll features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp;
1025 1.1 skrll break;
1026 1.1 skrll case EF_M68K_CF_ISA_C:
1027 1.1 skrll features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp;
1028 1.1 skrll break;
1029 1.1 skrll case EF_M68K_CF_ISA_C_NODIV:
1030 1.1 skrll features |= mcfisa_a|mcfisa_c|mcfusp;
1031 1.1 skrll break;
1032 1.1 skrll }
1033 1.1 skrll switch (eflags & EF_M68K_CF_MAC_MASK)
1034 1.1 skrll {
1035 1.1 skrll case EF_M68K_CF_MAC:
1036 1.1 skrll features |= mcfmac;
1037 1.1 skrll break;
1038 1.1 skrll case EF_M68K_CF_EMAC:
1039 1.1 skrll features |= mcfemac;
1040 1.1 skrll break;
1041 1.1 skrll }
1042 1.1 skrll if (eflags & EF_M68K_CF_FLOAT)
1043 1.1 skrll features |= cfloat;
1044 1.1 skrll }
1045 1.1 skrll
1046 1.1 skrll mach = bfd_m68k_features_to_mach (features);
1047 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach);
1048 1.1 skrll
1049 1.1 skrll return TRUE;
1050 1.1 skrll }
1051 1.3 christos
1052 1.3 christos /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag
1053 1.3 christos field based on the machine number. */
1054 1.3 christos
1055 1.3 christos static void
1056 1.3 christos elf_m68k_final_write_processing (bfd *abfd,
1057 1.3 christos bfd_boolean linker ATTRIBUTE_UNUSED)
1058 1.3 christos {
1059 1.3 christos int mach = bfd_get_mach (abfd);
1060 1.3 christos unsigned long e_flags = elf_elfheader (abfd)->e_flags;
1061 1.3 christos
1062 1.3 christos if (!e_flags)
1063 1.3 christos {
1064 1.3 christos unsigned int arch_mask;
1065 1.3 christos
1066 1.3 christos arch_mask = bfd_m68k_mach_to_features (mach);
1067 1.3 christos
1068 1.3 christos if (arch_mask & m68000)
1069 1.3 christos e_flags = EF_M68K_M68000;
1070 1.3 christos else if (arch_mask & cpu32)
1071 1.3 christos e_flags = EF_M68K_CPU32;
1072 1.3 christos else if (arch_mask & fido_a)
1073 1.3 christos e_flags = EF_M68K_FIDO;
1074 1.3 christos else
1075 1.3 christos {
1076 1.3 christos switch (arch_mask
1077 1.3 christos & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp))
1078 1.3 christos {
1079 1.3 christos case mcfisa_a:
1080 1.3 christos e_flags |= EF_M68K_CF_ISA_A_NODIV;
1081 1.3 christos break;
1082 1.3 christos case mcfisa_a | mcfhwdiv:
1083 1.3 christos e_flags |= EF_M68K_CF_ISA_A;
1084 1.3 christos break;
1085 1.3 christos case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp:
1086 1.3 christos e_flags |= EF_M68K_CF_ISA_A_PLUS;
1087 1.3 christos break;
1088 1.3 christos case mcfisa_a | mcfisa_b | mcfhwdiv:
1089 1.3 christos e_flags |= EF_M68K_CF_ISA_B_NOUSP;
1090 1.3 christos break;
1091 1.3 christos case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp:
1092 1.3 christos e_flags |= EF_M68K_CF_ISA_B;
1093 1.3 christos break;
1094 1.3 christos case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp:
1095 1.3 christos e_flags |= EF_M68K_CF_ISA_C;
1096 1.3 christos break;
1097 1.3 christos case mcfisa_a | mcfisa_c | mcfusp:
1098 1.3 christos e_flags |= EF_M68K_CF_ISA_C_NODIV;
1099 1.3 christos break;
1100 1.3 christos }
1101 1.3 christos if (arch_mask & mcfmac)
1102 1.3 christos e_flags |= EF_M68K_CF_MAC;
1103 1.3 christos else if (arch_mask & mcfemac)
1104 1.3 christos e_flags |= EF_M68K_CF_EMAC;
1105 1.3 christos if (arch_mask & cfloat)
1106 1.3 christos e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
1107 1.3 christos }
1108 1.3 christos elf_elfheader (abfd)->e_flags = e_flags;
1109 1.3 christos }
1110 1.3 christos }
1111 1.1 skrll
1112 1.3 christos /* Keep m68k-specific flags in the ELF header. */
1113 1.1 skrll
1114 1.4 christos static bfd_boolean
1115 1.1 skrll elf32_m68k_set_private_flags (bfd *abfd, flagword flags)
1116 1.1 skrll {
1117 1.1 skrll elf_elfheader (abfd)->e_flags = flags;
1118 1.1 skrll elf_flags_init (abfd) = TRUE;
1119 1.1 skrll return TRUE;
1120 1.1 skrll }
1121 1.1 skrll
1122 1.1 skrll /* Merge backend specific data from an object file to the output
1123 1.1 skrll object file when linking. */
1124 1.10.12.1 pgoyette static bfd_boolean
1125 1.1 skrll elf32_m68k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
1126 1.10.12.1 pgoyette {
1127 1.1 skrll bfd *obfd = info->output_bfd;
1128 1.1 skrll flagword out_flags;
1129 1.1 skrll flagword in_flags;
1130 1.1 skrll flagword out_isa;
1131 1.1 skrll flagword in_isa;
1132 1.1 skrll const bfd_arch_info_type *arch_info;
1133 1.1 skrll
1134 1.1 skrll if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1135 1.1 skrll || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1136 1.1 skrll return FALSE;
1137 1.1 skrll
1138 1.1 skrll /* Get the merged machine. This checks for incompatibility between
1139 1.1 skrll Coldfire & non-Coldfire flags, incompability between different
1140 1.1 skrll Coldfire ISAs, and incompability between different MAC types. */
1141 1.1 skrll arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE);
1142 1.1 skrll if (!arch_info)
1143 1.1 skrll return FALSE;
1144 1.1 skrll
1145 1.1 skrll bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach);
1146 1.1 skrll
1147 1.1 skrll in_flags = elf_elfheader (ibfd)->e_flags;
1148 1.1 skrll if (!elf_flags_init (obfd))
1149 1.1 skrll {
1150 1.1 skrll elf_flags_init (obfd) = TRUE;
1151 1.1 skrll out_flags = in_flags;
1152 1.1 skrll }
1153 1.1 skrll else
1154 1.1 skrll {
1155 1.1 skrll out_flags = elf_elfheader (obfd)->e_flags;
1156 1.1 skrll unsigned int variant_mask;
1157 1.1 skrll
1158 1.1 skrll if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1159 1.1 skrll variant_mask = 0;
1160 1.1 skrll else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1161 1.1 skrll variant_mask = 0;
1162 1.1 skrll else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1163 1.1 skrll variant_mask = 0;
1164 1.1 skrll else
1165 1.1 skrll variant_mask = EF_M68K_CF_ISA_MASK;
1166 1.1 skrll
1167 1.1 skrll in_isa = (in_flags & variant_mask);
1168 1.1 skrll out_isa = (out_flags & variant_mask);
1169 1.1 skrll if (in_isa > out_isa)
1170 1.1 skrll out_flags ^= in_isa ^ out_isa;
1171 1.1 skrll if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32
1172 1.1 skrll && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1173 1.1 skrll || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO
1174 1.1 skrll && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32))
1175 1.1 skrll out_flags = EF_M68K_FIDO;
1176 1.1 skrll else
1177 1.1 skrll out_flags |= in_flags ^ in_isa;
1178 1.1 skrll }
1179 1.1 skrll elf_elfheader (obfd)->e_flags = out_flags;
1180 1.1 skrll
1181 1.1 skrll return TRUE;
1182 1.1 skrll }
1183 1.1 skrll
1184 1.1 skrll /* Display the flags field. */
1185 1.1 skrll
1186 1.1 skrll static bfd_boolean
1187 1.1 skrll elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr)
1188 1.1 skrll {
1189 1.1 skrll FILE *file = (FILE *) ptr;
1190 1.1 skrll flagword eflags = elf_elfheader (abfd)->e_flags;
1191 1.1 skrll
1192 1.1 skrll BFD_ASSERT (abfd != NULL && ptr != NULL);
1193 1.1 skrll
1194 1.1 skrll /* Print normal ELF private data. */
1195 1.1 skrll _bfd_elf_print_private_bfd_data (abfd, ptr);
1196 1.1 skrll
1197 1.1 skrll /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
1198 1.1 skrll
1199 1.1 skrll /* xgettext:c-format */
1200 1.1 skrll fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
1201 1.1 skrll
1202 1.1 skrll if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000)
1203 1.1 skrll fprintf (file, " [m68000]");
1204 1.1 skrll else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)
1205 1.1 skrll fprintf (file, " [cpu32]");
1206 1.1 skrll else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO)
1207 1.1 skrll fprintf (file, " [fido]");
1208 1.1 skrll else
1209 1.1 skrll {
1210 1.1 skrll if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E)
1211 1.1 skrll fprintf (file, " [cfv4e]");
1212 1.1 skrll
1213 1.1 skrll if (eflags & EF_M68K_CF_ISA_MASK)
1214 1.1 skrll {
1215 1.1 skrll char const *isa = _("unknown");
1216 1.1 skrll char const *mac = _("unknown");
1217 1.1 skrll char const *additional = "";
1218 1.1 skrll
1219 1.1 skrll switch (eflags & EF_M68K_CF_ISA_MASK)
1220 1.1 skrll {
1221 1.1 skrll case EF_M68K_CF_ISA_A_NODIV:
1222 1.1 skrll isa = "A";
1223 1.1 skrll additional = " [nodiv]";
1224 1.1 skrll break;
1225 1.1 skrll case EF_M68K_CF_ISA_A:
1226 1.1 skrll isa = "A";
1227 1.1 skrll break;
1228 1.1 skrll case EF_M68K_CF_ISA_A_PLUS:
1229 1.1 skrll isa = "A+";
1230 1.1 skrll break;
1231 1.1 skrll case EF_M68K_CF_ISA_B_NOUSP:
1232 1.1 skrll isa = "B";
1233 1.1 skrll additional = " [nousp]";
1234 1.1 skrll break;
1235 1.1 skrll case EF_M68K_CF_ISA_B:
1236 1.1 skrll isa = "B";
1237 1.1 skrll break;
1238 1.1 skrll case EF_M68K_CF_ISA_C:
1239 1.1 skrll isa = "C";
1240 1.1 skrll break;
1241 1.1 skrll case EF_M68K_CF_ISA_C_NODIV:
1242 1.1 skrll isa = "C";
1243 1.1 skrll additional = " [nodiv]";
1244 1.1 skrll break;
1245 1.1 skrll }
1246 1.1 skrll fprintf (file, " [isa %s]%s", isa, additional);
1247 1.1 skrll
1248 1.1 skrll if (eflags & EF_M68K_CF_FLOAT)
1249 1.1 skrll fprintf (file, " [float]");
1250 1.1 skrll
1251 1.1 skrll switch (eflags & EF_M68K_CF_MAC_MASK)
1252 1.1 skrll {
1253 1.1 skrll case 0:
1254 1.1 skrll mac = NULL;
1255 1.1 skrll break;
1256 1.1 skrll case EF_M68K_CF_MAC:
1257 1.1 skrll mac = "mac";
1258 1.1 skrll break;
1259 1.1 skrll case EF_M68K_CF_EMAC:
1260 1.1 skrll mac = "emac";
1261 1.3 christos break;
1262 1.3 christos case EF_M68K_CF_EMAC_B:
1263 1.3 christos mac = "emac_b";
1264 1.1 skrll break;
1265 1.1 skrll }
1266 1.1 skrll if (mac)
1267 1.1 skrll fprintf (file, " [%s]", mac);
1268 1.1 skrll }
1269 1.1 skrll }
1270 1.1 skrll
1271 1.1 skrll fputc ('\n', file);
1272 1.1 skrll
1273 1.1 skrll return TRUE;
1274 1.1 skrll }
1275 1.1 skrll
1276 1.1 skrll /* Multi-GOT support implementation design:
1277 1.1 skrll
1278 1.1 skrll Multi-GOT starts in check_relocs hook. There we scan all
1279 1.1 skrll relocations of a BFD and build a local GOT (struct elf_m68k_got)
1280 1.1 skrll for it. If a single BFD appears to require too many GOT slots with
1281 1.1 skrll R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification
1282 1.1 skrll to user.
1283 1.1 skrll After check_relocs has been invoked for each input BFD, we have
1284 1.1 skrll constructed a GOT for each input BFD.
1285 1.1 skrll
1286 1.1 skrll To minimize total number of GOTs required for a particular output BFD
1287 1.1 skrll (as some environments support only 1 GOT per output object) we try
1288 1.1 skrll to merge some of the GOTs to share an offset space. Ideally [and in most
1289 1.1 skrll cases] we end up with a single GOT. In cases when there are too many
1290 1.1 skrll restricted relocations (e.g., R_68K_GOT16O relocations) we end up with
1291 1.1 skrll several GOTs, assuming the environment can handle them.
1292 1.1 skrll
1293 1.1 skrll Partitioning is done in elf_m68k_partition_multi_got. We start with
1294 1.1 skrll an empty GOT and traverse bfd2got hashtable putting got_entries from
1295 1.1 skrll local GOTs to the new 'big' one. We do that by constructing an
1296 1.1 skrll intermediate GOT holding all the entries the local GOT has and the big
1297 1.1 skrll GOT lacks. Then we check if there is room in the big GOT to accomodate
1298 1.1 skrll all the entries from diff. On success we add those entries to the big
1299 1.1 skrll GOT; on failure we start the new 'big' GOT and retry the adding of
1300 1.1 skrll entries from the local GOT. Note that this retry will always succeed as
1301 1.1 skrll each local GOT doesn't overflow the limits. After partitioning we
1302 1.1 skrll end up with each bfd assigned one of the big GOTs. GOT entries in the
1303 1.1 skrll big GOTs are initialized with GOT offsets. Note that big GOTs are
1304 1.1 skrll positioned consequently in program space and represent a single huge GOT
1305 1.1 skrll to the outside world.
1306 1.1 skrll
1307 1.1 skrll After that we get to elf_m68k_relocate_section. There we
1308 1.1 skrll adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol
1309 1.1 skrll relocations to refer to appropriate [assigned to current input_bfd]
1310 1.1 skrll big GOT.
1311 1.1 skrll
1312 1.1 skrll Notes:
1313 1.3 christos
1314 1.3 christos GOT entry type: We have several types of GOT entries.
1315 1.3 christos * R_8 type is used in entries for symbols that have at least one
1316 1.1 skrll R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40
1317 1.3 christos such entries in one GOT.
1318 1.3 christos * R_16 type is used in entries for symbols that have at least one
1319 1.1 skrll R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations.
1320 1.3 christos We can have at most 0x4000 such entries in one GOT.
1321 1.3 christos * R_32 type is used in all other cases. We can have as many
1322 1.1 skrll such entries in one GOT as we'd like.
1323 1.1 skrll When counting relocations we have to include the count of the smaller
1324 1.1 skrll ranged relocations in the counts of the larger ranged ones in order
1325 1.1 skrll to correctly detect overflow.
1326 1.1 skrll
1327 1.3 christos Sorting the GOT: In each GOT starting offsets are assigned to
1328 1.3 christos R_8 entries, which are followed by R_16 entries, and
1329 1.1 skrll R_32 entries go at the end. See finalize_got_offsets for details.
1330 1.1 skrll
1331 1.1 skrll Negative GOT offsets: To double usable offset range of GOTs we use
1332 1.1 skrll negative offsets. As we assign entries with GOT offsets relative to
1333 1.1 skrll start of .got section, the offset values are positive. They become
1334 1.1 skrll negative only in relocate_section where got->offset value is
1335 1.1 skrll subtracted from them.
1336 1.1 skrll
1337 1.1 skrll 3 special GOT entries: There are 3 special GOT entries used internally
1338 1.1 skrll by loader. These entries happen to be placed to .got.plt section,
1339 1.1 skrll so we don't do anything about them in multi-GOT support.
1340 1.1 skrll
1341 1.1 skrll Memory management: All data except for hashtables
1342 1.1 skrll multi_got->bfd2got and got->entries are allocated on
1343 1.1 skrll elf_hash_table (info)->dynobj bfd (for this reason we pass 'info'
1344 1.1 skrll to most functions), so we don't need to care to free them. At the
1345 1.1 skrll moment of allocation hashtables are being linked into main data
1346 1.1 skrll structure (multi_got), all pieces of which are reachable from
1347 1.1 skrll elf_m68k_multi_got (info). We deallocate them in
1348 1.1 skrll elf_m68k_link_hash_table_free. */
1349 1.1 skrll
1350 1.1 skrll /* Initialize GOT. */
1351 1.1 skrll
1352 1.3 christos static void
1353 1.3 christos elf_m68k_init_got (struct elf_m68k_got *got)
1354 1.3 christos {
1355 1.3 christos got->entries = NULL;
1356 1.3 christos got->n_slots[R_8] = 0;
1357 1.3 christos got->n_slots[R_16] = 0;
1358 1.3 christos got->n_slots[R_32] = 0;
1359 1.3 christos got->local_n_slots = 0;
1360 1.1 skrll got->offset = (bfd_vma) -1;
1361 1.1 skrll }
1362 1.1 skrll
1363 1.1 skrll /* Destruct GOT. */
1364 1.1 skrll
1365 1.1 skrll static void
1366 1.1 skrll elf_m68k_clear_got (struct elf_m68k_got *got)
1367 1.1 skrll {
1368 1.1 skrll if (got->entries != NULL)
1369 1.1 skrll {
1370 1.1 skrll htab_delete (got->entries);
1371 1.1 skrll got->entries = NULL;
1372 1.1 skrll }
1373 1.1 skrll }
1374 1.1 skrll
1375 1.1 skrll /* Create and empty GOT structure. INFO is the context where memory
1376 1.1 skrll should be allocated. */
1377 1.1 skrll
1378 1.1 skrll static struct elf_m68k_got *
1379 1.1 skrll elf_m68k_create_empty_got (struct bfd_link_info *info)
1380 1.1 skrll {
1381 1.1 skrll struct elf_m68k_got *got;
1382 1.1 skrll
1383 1.1 skrll got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got));
1384 1.1 skrll if (got == NULL)
1385 1.1 skrll return NULL;
1386 1.3 christos
1387 1.1 skrll elf_m68k_init_got (got);
1388 1.1 skrll
1389 1.1 skrll return got;
1390 1.1 skrll }
1391 1.1 skrll
1392 1.1 skrll /* Initialize KEY. */
1393 1.1 skrll
1394 1.1 skrll static void
1395 1.1 skrll elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key,
1396 1.3 christos struct elf_link_hash_entry *h,
1397 1.3 christos const bfd *abfd, unsigned long symndx,
1398 1.1 skrll enum elf_m68k_reloc_type reloc_type)
1399 1.3 christos {
1400 1.3 christos if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32)
1401 1.3 christos /* All TLS_LDM relocations share a single GOT entry. */
1402 1.3 christos {
1403 1.3 christos key->bfd = NULL;
1404 1.3 christos key->symndx = 0;
1405 1.3 christos }
1406 1.3 christos else if (h != NULL)
1407 1.1 skrll /* Global symbols are identified with their got_entry_key. */
1408 1.1 skrll {
1409 1.1 skrll key->bfd = NULL;
1410 1.1 skrll key->symndx = elf_m68k_hash_entry (h)->got_entry_key;
1411 1.1 skrll BFD_ASSERT (key->symndx != 0);
1412 1.1 skrll }
1413 1.3 christos else
1414 1.1 skrll /* Local symbols are identified by BFD they appear in and symndx. */
1415 1.1 skrll {
1416 1.1 skrll key->bfd = abfd;
1417 1.1 skrll key->symndx = symndx;
1418 1.3 christos }
1419 1.3 christos
1420 1.1 skrll key->type = reloc_type;
1421 1.1 skrll }
1422 1.1 skrll
1423 1.1 skrll /* Calculate hash of got_entry.
1424 1.1 skrll ??? Is it good? */
1425 1.1 skrll
1426 1.1 skrll static hashval_t
1427 1.1 skrll elf_m68k_got_entry_hash (const void *_entry)
1428 1.1 skrll {
1429 1.1 skrll const struct elf_m68k_got_entry_key *key;
1430 1.1 skrll
1431 1.1 skrll key = &((const struct elf_m68k_got_entry *) _entry)->key_;
1432 1.3 christos
1433 1.3 christos return (key->symndx
1434 1.3 christos + (key->bfd != NULL ? (int) key->bfd->id : -1)
1435 1.1 skrll + elf_m68k_reloc_got_type (key->type));
1436 1.1 skrll }
1437 1.1 skrll
1438 1.1 skrll /* Check if two got entries are equal. */
1439 1.1 skrll
1440 1.1 skrll static int
1441 1.1 skrll elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2)
1442 1.1 skrll {
1443 1.1 skrll const struct elf_m68k_got_entry_key *key1;
1444 1.1 skrll const struct elf_m68k_got_entry_key *key2;
1445 1.1 skrll
1446 1.1 skrll key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_;
1447 1.1 skrll key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_;
1448 1.1 skrll
1449 1.3 christos return (key1->bfd == key2->bfd
1450 1.3 christos && key1->symndx == key2->symndx
1451 1.3 christos && (elf_m68k_reloc_got_type (key1->type)
1452 1.1 skrll == elf_m68k_reloc_got_type (key2->type)));
1453 1.1 skrll }
1454 1.3 christos
1455 1.3 christos /* When using negative offsets, we allocate one extra R_8, one extra R_16
1456 1.3 christos and one extra R_32 slots to simplify handling of 2-slot entries during
1457 1.3 christos offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */
1458 1.3 christos
1459 1.3 christos /* Maximal number of R_8 slots in a single GOT. */
1460 1.1 skrll #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \
1461 1.3 christos (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1462 1.1 skrll ? (0x40 - 1) \
1463 1.1 skrll : 0x20)
1464 1.3 christos
1465 1.3 christos /* Maximal number of R_8 and R_16 slots in a single GOT. */
1466 1.1 skrll #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \
1467 1.3 christos (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \
1468 1.1 skrll ? (0x4000 - 2) \
1469 1.1 skrll : 0x2000)
1470 1.1 skrll
1471 1.1 skrll /* SEARCH - simply search the hashtable, don't insert new entries or fail when
1472 1.1 skrll the entry cannot be found.
1473 1.1 skrll FIND_OR_CREATE - search for an existing entry, but create new if there's
1474 1.1 skrll no such.
1475 1.1 skrll MUST_FIND - search for an existing entry and assert that it exist.
1476 1.1 skrll MUST_CREATE - assert that there's no such entry and create new one. */
1477 1.1 skrll enum elf_m68k_get_entry_howto
1478 1.1 skrll {
1479 1.1 skrll SEARCH,
1480 1.1 skrll FIND_OR_CREATE,
1481 1.1 skrll MUST_FIND,
1482 1.1 skrll MUST_CREATE
1483 1.1 skrll };
1484 1.1 skrll
1485 1.1 skrll /* Get or create (depending on HOWTO) entry with KEY in GOT.
1486 1.1 skrll INFO is context in which memory should be allocated (can be NULL if
1487 1.1 skrll HOWTO is SEARCH or MUST_FIND). */
1488 1.1 skrll
1489 1.1 skrll static struct elf_m68k_got_entry *
1490 1.1 skrll elf_m68k_get_got_entry (struct elf_m68k_got *got,
1491 1.1 skrll const struct elf_m68k_got_entry_key *key,
1492 1.1 skrll enum elf_m68k_get_entry_howto howto,
1493 1.1 skrll struct bfd_link_info *info)
1494 1.1 skrll {
1495 1.1 skrll struct elf_m68k_got_entry entry_;
1496 1.1 skrll struct elf_m68k_got_entry *entry;
1497 1.1 skrll void **ptr;
1498 1.1 skrll
1499 1.1 skrll BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1500 1.1 skrll
1501 1.1 skrll if (got->entries == NULL)
1502 1.1 skrll /* This is the first entry in ABFD. Initialize hashtable. */
1503 1.1 skrll {
1504 1.1 skrll if (howto == SEARCH)
1505 1.1 skrll return NULL;
1506 1.3 christos
1507 1.1 skrll got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT
1508 1.1 skrll (info),
1509 1.1 skrll elf_m68k_got_entry_hash,
1510 1.1 skrll elf_m68k_got_entry_eq, NULL);
1511 1.1 skrll if (got->entries == NULL)
1512 1.1 skrll {
1513 1.1 skrll bfd_set_error (bfd_error_no_memory);
1514 1.1 skrll return NULL;
1515 1.1 skrll }
1516 1.1 skrll }
1517 1.1 skrll
1518 1.1 skrll entry_.key_ = *key;
1519 1.1 skrll ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH
1520 1.1 skrll ? INSERT : NO_INSERT));
1521 1.1 skrll if (ptr == NULL)
1522 1.1 skrll {
1523 1.1 skrll if (howto == SEARCH)
1524 1.1 skrll /* Entry not found. */
1525 1.1 skrll return NULL;
1526 1.1 skrll
1527 1.1 skrll /* We're out of memory. */
1528 1.1 skrll bfd_set_error (bfd_error_no_memory);
1529 1.1 skrll return NULL;
1530 1.1 skrll }
1531 1.1 skrll
1532 1.1 skrll if (*ptr == NULL)
1533 1.1 skrll /* We didn't find the entry and we're asked to create a new one. */
1534 1.1 skrll {
1535 1.1 skrll BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1536 1.1 skrll
1537 1.1 skrll entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry));
1538 1.1 skrll if (entry == NULL)
1539 1.1 skrll return NULL;
1540 1.1 skrll
1541 1.1 skrll /* Initialize new entry. */
1542 1.1 skrll entry->key_ = *key;
1543 1.1 skrll
1544 1.3 christos entry->u.s1.refcount = 0;
1545 1.3 christos
1546 1.3 christos /* Mark the entry as not initialized. */
1547 1.1 skrll entry->key_.type = R_68K_max;
1548 1.1 skrll
1549 1.1 skrll *ptr = entry;
1550 1.1 skrll }
1551 1.1 skrll else
1552 1.1 skrll /* We found the entry. */
1553 1.1 skrll {
1554 1.1 skrll BFD_ASSERT (howto != MUST_CREATE);
1555 1.1 skrll
1556 1.1 skrll entry = *ptr;
1557 1.1 skrll }
1558 1.1 skrll
1559 1.1 skrll return entry;
1560 1.1 skrll }
1561 1.1 skrll
1562 1.1 skrll /* Update GOT counters when merging entry of WAS type with entry of NEW type.
1563 1.1 skrll Return the value to which ENTRY's type should be set. */
1564 1.3 christos
1565 1.3 christos static enum elf_m68k_reloc_type
1566 1.3 christos elf_m68k_update_got_entry_type (struct elf_m68k_got *got,
1567 1.3 christos enum elf_m68k_reloc_type was,
1568 1.3 christos enum elf_m68k_reloc_type new_reloc)
1569 1.3 christos {
1570 1.3 christos enum elf_m68k_got_offset_size was_size;
1571 1.3 christos enum elf_m68k_got_offset_size new_size;
1572 1.3 christos bfd_vma n_slots;
1573 1.3 christos
1574 1.3 christos if (was == R_68K_max)
1575 1.1 skrll /* The type of the entry is not initialized yet. */
1576 1.3 christos {
1577 1.3 christos /* Update all got->n_slots counters, including n_slots[R_32]. */
1578 1.1 skrll was_size = R_LAST;
1579 1.3 christos
1580 1.1 skrll was = new_reloc;
1581 1.1 skrll }
1582 1.3 christos else
1583 1.3 christos {
1584 1.3 christos /* !!! We, probably, should emit an error rather then fail on assert
1585 1.3 christos in such a case. */
1586 1.3 christos BFD_ASSERT (elf_m68k_reloc_got_type (was)
1587 1.3 christos == elf_m68k_reloc_got_type (new_reloc));
1588 1.3 christos
1589 1.3 christos was_size = elf_m68k_reloc_got_offset_size (was);
1590 1.1 skrll }
1591 1.3 christos
1592 1.3 christos new_size = elf_m68k_reloc_got_offset_size (new_reloc);
1593 1.3 christos n_slots = elf_m68k_reloc_got_n_slots (new_reloc);
1594 1.3 christos
1595 1.3 christos while (was_size > new_size)
1596 1.3 christos {
1597 1.3 christos --was_size;
1598 1.3 christos got->n_slots[was_size] += n_slots;
1599 1.3 christos }
1600 1.3 christos
1601 1.3 christos if (new_reloc > was)
1602 1.3 christos /* Relocations are ordered from bigger got offset size to lesser,
1603 1.3 christos so choose the relocation type with lesser offset size. */
1604 1.3 christos was = new_reloc;
1605 1.3 christos
1606 1.1 skrll return was;
1607 1.1 skrll }
1608 1.1 skrll
1609 1.1 skrll /* Add new or update existing entry to GOT.
1610 1.1 skrll H, ABFD, TYPE and SYMNDX is data for the entry.
1611 1.1 skrll INFO is a context where memory should be allocated. */
1612 1.1 skrll
1613 1.1 skrll static struct elf_m68k_got_entry *
1614 1.1 skrll elf_m68k_add_entry_to_got (struct elf_m68k_got *got,
1615 1.1 skrll struct elf_link_hash_entry *h,
1616 1.3 christos const bfd *abfd,
1617 1.3 christos enum elf_m68k_reloc_type reloc_type,
1618 1.1 skrll unsigned long symndx,
1619 1.1 skrll struct bfd_link_info *info)
1620 1.1 skrll {
1621 1.1 skrll struct elf_m68k_got_entry_key key_;
1622 1.1 skrll struct elf_m68k_got_entry *entry;
1623 1.1 skrll
1624 1.1 skrll if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0)
1625 1.1 skrll elf_m68k_hash_entry (h)->got_entry_key
1626 1.1 skrll = elf_m68k_multi_got (info)->global_symndx++;
1627 1.3 christos
1628 1.1 skrll elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type);
1629 1.1 skrll
1630 1.1 skrll entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info);
1631 1.1 skrll if (entry == NULL)
1632 1.1 skrll return NULL;
1633 1.3 christos
1634 1.3 christos /* Determine entry's type and update got->n_slots counters. */
1635 1.3 christos entry->key_.type = elf_m68k_update_got_entry_type (got,
1636 1.3 christos entry->key_.type,
1637 1.3 christos reloc_type);
1638 1.1 skrll
1639 1.1 skrll /* Update refcount. */
1640 1.1 skrll ++entry->u.s1.refcount;
1641 1.1 skrll
1642 1.1 skrll if (entry->u.s1.refcount == 1)
1643 1.1 skrll /* We see this entry for the first time. */
1644 1.1 skrll {
1645 1.3 christos if (entry->key_.bfd != NULL)
1646 1.1 skrll got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type);
1647 1.1 skrll }
1648 1.3 christos
1649 1.1 skrll BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots);
1650 1.3 christos
1651 1.3 christos if ((got->n_slots[R_8]
1652 1.3 christos > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1653 1.3 christos || (got->n_slots[R_16]
1654 1.1 skrll > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
1655 1.1 skrll /* This BFD has too many relocation. */
1656 1.3 christos {
1657 1.10.12.1 pgoyette if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1658 1.10.12.1 pgoyette /* xgettext:c-format */
1659 1.10.12.1 pgoyette _bfd_error_handler (_("%B: GOT overflow: "
1660 1.10.12.1 pgoyette "Number of relocations with 8-bit "
1661 1.10.12.1 pgoyette "offset > %d"),
1662 1.10.12.1 pgoyette abfd,
1663 1.1 skrll ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info));
1664 1.10.12.1 pgoyette else
1665 1.10.12.1 pgoyette /* xgettext:c-format */
1666 1.10.12.1 pgoyette _bfd_error_handler (_("%B: GOT overflow: "
1667 1.10.12.1 pgoyette "Number of relocations with 8- or 16-bit "
1668 1.10.12.1 pgoyette "offset > %d"),
1669 1.10.12.1 pgoyette abfd,
1670 1.1 skrll ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info));
1671 1.1 skrll
1672 1.1 skrll return NULL;
1673 1.1 skrll }
1674 1.1 skrll
1675 1.1 skrll return entry;
1676 1.1 skrll }
1677 1.1 skrll
1678 1.1 skrll /* Compute the hash value of the bfd in a bfd2got hash entry. */
1679 1.1 skrll
1680 1.1 skrll static hashval_t
1681 1.1 skrll elf_m68k_bfd2got_entry_hash (const void *entry)
1682 1.1 skrll {
1683 1.1 skrll const struct elf_m68k_bfd2got_entry *e;
1684 1.1 skrll
1685 1.1 skrll e = (const struct elf_m68k_bfd2got_entry *) entry;
1686 1.1 skrll
1687 1.1 skrll return e->bfd->id;
1688 1.1 skrll }
1689 1.1 skrll
1690 1.1 skrll /* Check whether two hash entries have the same bfd. */
1691 1.1 skrll
1692 1.1 skrll static int
1693 1.1 skrll elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2)
1694 1.1 skrll {
1695 1.1 skrll const struct elf_m68k_bfd2got_entry *e1;
1696 1.1 skrll const struct elf_m68k_bfd2got_entry *e2;
1697 1.1 skrll
1698 1.1 skrll e1 = (const struct elf_m68k_bfd2got_entry *) entry1;
1699 1.1 skrll e2 = (const struct elf_m68k_bfd2got_entry *) entry2;
1700 1.1 skrll
1701 1.1 skrll return e1->bfd == e2->bfd;
1702 1.1 skrll }
1703 1.1 skrll
1704 1.1 skrll /* Destruct a bfd2got entry. */
1705 1.1 skrll
1706 1.1 skrll static void
1707 1.1 skrll elf_m68k_bfd2got_entry_del (void *_entry)
1708 1.1 skrll {
1709 1.1 skrll struct elf_m68k_bfd2got_entry *entry;
1710 1.1 skrll
1711 1.1 skrll entry = (struct elf_m68k_bfd2got_entry *) _entry;
1712 1.1 skrll
1713 1.1 skrll BFD_ASSERT (entry->got != NULL);
1714 1.1 skrll elf_m68k_clear_got (entry->got);
1715 1.1 skrll }
1716 1.1 skrll
1717 1.1 skrll /* Find existing or create new (depending on HOWTO) bfd2got entry in
1718 1.1 skrll MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where
1719 1.1 skrll memory should be allocated. */
1720 1.1 skrll
1721 1.1 skrll static struct elf_m68k_bfd2got_entry *
1722 1.1 skrll elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got,
1723 1.1 skrll const bfd *abfd,
1724 1.1 skrll enum elf_m68k_get_entry_howto howto,
1725 1.1 skrll struct bfd_link_info *info)
1726 1.1 skrll {
1727 1.1 skrll struct elf_m68k_bfd2got_entry entry_;
1728 1.1 skrll void **ptr;
1729 1.1 skrll struct elf_m68k_bfd2got_entry *entry;
1730 1.1 skrll
1731 1.1 skrll BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND));
1732 1.1 skrll
1733 1.1 skrll if (multi_got->bfd2got == NULL)
1734 1.1 skrll /* This is the first GOT. Initialize bfd2got. */
1735 1.1 skrll {
1736 1.1 skrll if (howto == SEARCH)
1737 1.1 skrll return NULL;
1738 1.1 skrll
1739 1.1 skrll multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash,
1740 1.1 skrll elf_m68k_bfd2got_entry_eq,
1741 1.1 skrll elf_m68k_bfd2got_entry_del);
1742 1.1 skrll if (multi_got->bfd2got == NULL)
1743 1.1 skrll {
1744 1.1 skrll bfd_set_error (bfd_error_no_memory);
1745 1.1 skrll return NULL;
1746 1.1 skrll }
1747 1.1 skrll }
1748 1.1 skrll
1749 1.1 skrll entry_.bfd = abfd;
1750 1.1 skrll ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH
1751 1.1 skrll ? INSERT : NO_INSERT));
1752 1.1 skrll if (ptr == NULL)
1753 1.1 skrll {
1754 1.1 skrll if (howto == SEARCH)
1755 1.1 skrll /* Entry not found. */
1756 1.1 skrll return NULL;
1757 1.1 skrll
1758 1.1 skrll /* We're out of memory. */
1759 1.1 skrll bfd_set_error (bfd_error_no_memory);
1760 1.1 skrll return NULL;
1761 1.1 skrll }
1762 1.1 skrll
1763 1.1 skrll if (*ptr == NULL)
1764 1.1 skrll /* Entry was not found. Create new one. */
1765 1.1 skrll {
1766 1.1 skrll BFD_ASSERT (howto != MUST_FIND && howto != SEARCH);
1767 1.1 skrll
1768 1.1 skrll entry = ((struct elf_m68k_bfd2got_entry *)
1769 1.1 skrll bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)));
1770 1.1 skrll if (entry == NULL)
1771 1.1 skrll return NULL;
1772 1.1 skrll
1773 1.1 skrll entry->bfd = abfd;
1774 1.1 skrll
1775 1.1 skrll entry->got = elf_m68k_create_empty_got (info);
1776 1.1 skrll if (entry->got == NULL)
1777 1.1 skrll return NULL;
1778 1.1 skrll
1779 1.1 skrll *ptr = entry;
1780 1.1 skrll }
1781 1.1 skrll else
1782 1.1 skrll {
1783 1.1 skrll BFD_ASSERT (howto != MUST_CREATE);
1784 1.1 skrll
1785 1.1 skrll /* Return existing entry. */
1786 1.1 skrll entry = *ptr;
1787 1.1 skrll }
1788 1.1 skrll
1789 1.1 skrll return entry;
1790 1.1 skrll }
1791 1.1 skrll
1792 1.1 skrll struct elf_m68k_can_merge_gots_arg
1793 1.1 skrll {
1794 1.1 skrll /* A current_got that we constructing a DIFF against. */
1795 1.1 skrll struct elf_m68k_got *big;
1796 1.1 skrll
1797 1.1 skrll /* GOT holding entries not present or that should be changed in
1798 1.1 skrll BIG. */
1799 1.1 skrll struct elf_m68k_got *diff;
1800 1.1 skrll
1801 1.1 skrll /* Context where to allocate memory. */
1802 1.1 skrll struct bfd_link_info *info;
1803 1.1 skrll
1804 1.1 skrll /* Error flag. */
1805 1.1 skrll bfd_boolean error_p;
1806 1.1 skrll };
1807 1.1 skrll
1808 1.1 skrll /* Process a single entry from the small GOT to see if it should be added
1809 1.1 skrll or updated in the big GOT. */
1810 1.1 skrll
1811 1.1 skrll static int
1812 1.1 skrll elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg)
1813 1.1 skrll {
1814 1.1 skrll const struct elf_m68k_got_entry *entry1;
1815 1.1 skrll struct elf_m68k_can_merge_gots_arg *arg;
1816 1.3 christos const struct elf_m68k_got_entry *entry2;
1817 1.1 skrll enum elf_m68k_reloc_type type;
1818 1.1 skrll
1819 1.1 skrll entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr;
1820 1.1 skrll arg = (struct elf_m68k_can_merge_gots_arg *) _arg;
1821 1.1 skrll
1822 1.1 skrll entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL);
1823 1.1 skrll
1824 1.3 christos if (entry2 != NULL)
1825 1.1 skrll /* We found an existing entry. Check if we should update it. */
1826 1.3 christos {
1827 1.3 christos type = elf_m68k_update_got_entry_type (arg->diff,
1828 1.3 christos entry2->key_.type,
1829 1.1 skrll entry1->key_.type);
1830 1.3 christos
1831 1.1 skrll if (type == entry2->key_.type)
1832 1.1 skrll /* ENTRY1 doesn't update data in ENTRY2. Skip it.
1833 1.1 skrll To skip creation of difference entry we use the type,
1834 1.3 christos which we won't see in GOT entries for sure. */
1835 1.1 skrll type = R_68K_max;
1836 1.1 skrll }
1837 1.3 christos else
1838 1.1 skrll /* We didn't find the entry. Add entry1 to DIFF. */
1839 1.3 christos {
1840 1.1 skrll BFD_ASSERT (entry1->key_.type != R_68K_max);
1841 1.3 christos
1842 1.3 christos type = elf_m68k_update_got_entry_type (arg->diff,
1843 1.1 skrll R_68K_max, entry1->key_.type);
1844 1.1 skrll
1845 1.3 christos if (entry1->key_.bfd != NULL)
1846 1.1 skrll arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type);
1847 1.1 skrll }
1848 1.3 christos
1849 1.1 skrll if (type != R_68K_max)
1850 1.1 skrll /* Create an entry in DIFF. */
1851 1.1 skrll {
1852 1.1 skrll struct elf_m68k_got_entry *entry;
1853 1.1 skrll
1854 1.1 skrll entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE,
1855 1.1 skrll arg->info);
1856 1.1 skrll if (entry == NULL)
1857 1.1 skrll {
1858 1.1 skrll arg->error_p = TRUE;
1859 1.1 skrll return 0;
1860 1.1 skrll }
1861 1.3 christos
1862 1.1 skrll entry->key_.type = type;
1863 1.1 skrll }
1864 1.1 skrll
1865 1.1 skrll return 1;
1866 1.1 skrll }
1867 1.1 skrll
1868 1.1 skrll /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it.
1869 1.1 skrll Construct DIFF GOT holding the entries which should be added or updated
1870 1.1 skrll in BIG GOT to accumulate information from SMALL.
1871 1.1 skrll INFO is the context where memory should be allocated. */
1872 1.1 skrll
1873 1.1 skrll static bfd_boolean
1874 1.1 skrll elf_m68k_can_merge_gots (struct elf_m68k_got *big,
1875 1.1 skrll const struct elf_m68k_got *small,
1876 1.1 skrll struct bfd_link_info *info,
1877 1.1 skrll struct elf_m68k_got *diff)
1878 1.1 skrll {
1879 1.1 skrll struct elf_m68k_can_merge_gots_arg arg_;
1880 1.1 skrll
1881 1.1 skrll BFD_ASSERT (small->offset == (bfd_vma) -1);
1882 1.1 skrll
1883 1.1 skrll arg_.big = big;
1884 1.1 skrll arg_.diff = diff;
1885 1.1 skrll arg_.info = info;
1886 1.1 skrll arg_.error_p = FALSE;
1887 1.1 skrll htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_);
1888 1.1 skrll if (arg_.error_p)
1889 1.1 skrll {
1890 1.1 skrll diff->offset = 0;
1891 1.1 skrll return FALSE;
1892 1.1 skrll }
1893 1.1 skrll
1894 1.3 christos /* Check for overflow. */
1895 1.3 christos if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8]
1896 1.3 christos > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1897 1.3 christos || (big->n_slots[R_16] + arg_.diff->n_slots[R_16]
1898 1.1 skrll > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))
1899 1.1 skrll return FALSE;
1900 1.1 skrll
1901 1.1 skrll return TRUE;
1902 1.1 skrll }
1903 1.1 skrll
1904 1.1 skrll struct elf_m68k_merge_gots_arg
1905 1.1 skrll {
1906 1.1 skrll /* The BIG got. */
1907 1.1 skrll struct elf_m68k_got *big;
1908 1.1 skrll
1909 1.1 skrll /* Context where memory should be allocated. */
1910 1.1 skrll struct bfd_link_info *info;
1911 1.1 skrll
1912 1.1 skrll /* Error flag. */
1913 1.1 skrll bfd_boolean error_p;
1914 1.1 skrll };
1915 1.1 skrll
1916 1.1 skrll /* Process a single entry from DIFF got. Add or update corresponding
1917 1.1 skrll entry in the BIG got. */
1918 1.1 skrll
1919 1.1 skrll static int
1920 1.1 skrll elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg)
1921 1.1 skrll {
1922 1.1 skrll const struct elf_m68k_got_entry *from;
1923 1.1 skrll struct elf_m68k_merge_gots_arg *arg;
1924 1.1 skrll struct elf_m68k_got_entry *to;
1925 1.1 skrll
1926 1.1 skrll from = (const struct elf_m68k_got_entry *) *entry_ptr;
1927 1.1 skrll arg = (struct elf_m68k_merge_gots_arg *) _arg;
1928 1.1 skrll
1929 1.1 skrll to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE,
1930 1.1 skrll arg->info);
1931 1.1 skrll if (to == NULL)
1932 1.1 skrll {
1933 1.1 skrll arg->error_p = TRUE;
1934 1.1 skrll return 0;
1935 1.1 skrll }
1936 1.1 skrll
1937 1.1 skrll BFD_ASSERT (to->u.s1.refcount == 0);
1938 1.3 christos /* All we need to merge is TYPE. */
1939 1.1 skrll to->key_.type = from->key_.type;
1940 1.1 skrll
1941 1.1 skrll return 1;
1942 1.1 skrll }
1943 1.1 skrll
1944 1.1 skrll /* Merge data from DIFF to BIG. INFO is context where memory should be
1945 1.1 skrll allocated. */
1946 1.1 skrll
1947 1.1 skrll static bfd_boolean
1948 1.1 skrll elf_m68k_merge_gots (struct elf_m68k_got *big,
1949 1.1 skrll struct elf_m68k_got *diff,
1950 1.1 skrll struct bfd_link_info *info)
1951 1.1 skrll {
1952 1.1 skrll if (diff->entries != NULL)
1953 1.1 skrll /* DIFF is not empty. Merge it into BIG GOT. */
1954 1.1 skrll {
1955 1.1 skrll struct elf_m68k_merge_gots_arg arg_;
1956 1.1 skrll
1957 1.1 skrll /* Merge entries. */
1958 1.1 skrll arg_.big = big;
1959 1.1 skrll arg_.info = info;
1960 1.1 skrll arg_.error_p = FALSE;
1961 1.1 skrll htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_);
1962 1.1 skrll if (arg_.error_p)
1963 1.1 skrll return FALSE;
1964 1.1 skrll
1965 1.3 christos /* Merge counters. */
1966 1.3 christos big->n_slots[R_8] += diff->n_slots[R_8];
1967 1.3 christos big->n_slots[R_16] += diff->n_slots[R_16];
1968 1.3 christos big->n_slots[R_32] += diff->n_slots[R_32];
1969 1.1 skrll big->local_n_slots += diff->local_n_slots;
1970 1.1 skrll }
1971 1.1 skrll else
1972 1.1 skrll /* DIFF is empty. */
1973 1.3 christos {
1974 1.3 christos BFD_ASSERT (diff->n_slots[R_8] == 0);
1975 1.3 christos BFD_ASSERT (diff->n_slots[R_16] == 0);
1976 1.3 christos BFD_ASSERT (diff->n_slots[R_32] == 0);
1977 1.1 skrll BFD_ASSERT (diff->local_n_slots == 0);
1978 1.1 skrll }
1979 1.1 skrll
1980 1.3 christos BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p
1981 1.3 christos || ((big->n_slots[R_8]
1982 1.3 christos <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info))
1983 1.3 christos && (big->n_slots[R_16]
1984 1.1 skrll <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))));
1985 1.1 skrll
1986 1.1 skrll return TRUE;
1987 1.1 skrll }
1988 1.1 skrll
1989 1.1 skrll struct elf_m68k_finalize_got_offsets_arg
1990 1.3 christos {
1991 1.3 christos /* Ranges of the offsets for GOT entries.
1992 1.3 christos R_x entries receive offsets between offset1[R_x] and offset2[R_x].
1993 1.3 christos R_x is R_8, R_16 and R_32. */
1994 1.3 christos bfd_vma *offset1;
1995 1.1 skrll bfd_vma *offset2;
1996 1.1 skrll
1997 1.1 skrll /* Mapping from global symndx to global symbols.
1998 1.1 skrll This is used to build lists of got entries for global symbols. */
1999 1.3 christos struct elf_m68k_link_hash_entry **symndx2h;
2000 1.3 christos
2001 1.1 skrll bfd_vma n_ldm_entries;
2002 1.1 skrll };
2003 1.1 skrll
2004 1.1 skrll /* Assign ENTRY an offset. Build list of GOT entries for global symbols
2005 1.1 skrll along the way. */
2006 1.1 skrll
2007 1.1 skrll static int
2008 1.1 skrll elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg)
2009 1.1 skrll {
2010 1.1 skrll struct elf_m68k_got_entry *entry;
2011 1.1 skrll struct elf_m68k_finalize_got_offsets_arg *arg;
2012 1.3 christos
2013 1.3 christos enum elf_m68k_got_offset_size got_offset_size;
2014 1.3 christos bfd_vma entry_size;
2015 1.1 skrll
2016 1.1 skrll entry = (struct elf_m68k_got_entry *) *entry_ptr;
2017 1.1 skrll arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg;
2018 1.1 skrll
2019 1.1 skrll /* This should be a fresh entry created in elf_m68k_can_merge_gots. */
2020 1.1 skrll BFD_ASSERT (entry->u.s1.refcount == 0);
2021 1.3 christos
2022 1.3 christos /* Get GOT offset size for the entry . */
2023 1.1 skrll got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type);
2024 1.3 christos
2025 1.3 christos /* Calculate entry size in bytes. */
2026 1.1 skrll entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type);
2027 1.3 christos
2028 1.3 christos /* Check if we should switch to negative range of the offsets. */
2029 1.3 christos if (arg->offset1[got_offset_size] + entry_size
2030 1.3 christos > arg->offset2[got_offset_size])
2031 1.3 christos {
2032 1.3 christos /* Verify that this is the only switch to negative range for
2033 1.3 christos got_offset_size. If this assertion fails, then we've miscalculated
2034 1.3 christos range for got_offset_size entries in
2035 1.3 christos elf_m68k_finalize_got_offsets. */
2036 1.3 christos BFD_ASSERT (arg->offset2[got_offset_size]
2037 1.3 christos != arg->offset2[-(int) got_offset_size - 1]);
2038 1.3 christos
2039 1.3 christos /* Switch. */
2040 1.3 christos arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1];
2041 1.3 christos arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1];
2042 1.3 christos
2043 1.3 christos /* Verify that now we have enough room for the entry. */
2044 1.3 christos BFD_ASSERT (arg->offset1[got_offset_size] + entry_size
2045 1.3 christos <= arg->offset2[got_offset_size]);
2046 1.3 christos }
2047 1.3 christos
2048 1.3 christos /* Assign offset to entry. */
2049 1.3 christos entry->u.s2.offset = arg->offset1[got_offset_size];
2050 1.1 skrll arg->offset1[got_offset_size] += entry_size;
2051 1.1 skrll
2052 1.1 skrll if (entry->key_.bfd == NULL)
2053 1.1 skrll /* Hook up this entry into the list of got_entries of H. */
2054 1.1 skrll {
2055 1.1 skrll struct elf_m68k_link_hash_entry *h;
2056 1.1 skrll
2057 1.3 christos h = arg->symndx2h[entry->key_.symndx];
2058 1.3 christos if (h != NULL)
2059 1.3 christos {
2060 1.3 christos entry->u.s2.next = h->glist;
2061 1.3 christos h->glist = entry;
2062 1.3 christos }
2063 1.3 christos else
2064 1.3 christos /* This should be the entry for TLS_LDM relocation then. */
2065 1.3 christos {
2066 1.3 christos BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type)
2067 1.3 christos == R_68K_TLS_LDM32)
2068 1.1 skrll && entry->key_.symndx == 0);
2069 1.3 christos
2070 1.3 christos ++arg->n_ldm_entries;
2071 1.1 skrll }
2072 1.1 skrll }
2073 1.1 skrll else
2074 1.1 skrll /* This entry is for local symbol. */
2075 1.1 skrll entry->u.s2.next = NULL;
2076 1.1 skrll
2077 1.1 skrll return 1;
2078 1.1 skrll }
2079 1.1 skrll
2080 1.1 skrll /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we
2081 1.1 skrll should use negative offsets.
2082 1.1 skrll Build list of GOT entries for global symbols along the way.
2083 1.3 christos SYMNDX2H is mapping from global symbol indices to actual
2084 1.3 christos global symbols.
2085 1.1 skrll Return offset at which next GOT should start. */
2086 1.1 skrll
2087 1.1 skrll static void
2088 1.1 skrll elf_m68k_finalize_got_offsets (struct elf_m68k_got *got,
2089 1.3 christos bfd_boolean use_neg_got_offsets_p,
2090 1.3 christos struct elf_m68k_link_hash_entry **symndx2h,
2091 1.1 skrll bfd_vma *final_offset, bfd_vma *n_ldm_entries)
2092 1.1 skrll {
2093 1.3 christos struct elf_m68k_finalize_got_offsets_arg arg_;
2094 1.3 christos bfd_vma offset1_[2 * R_LAST];
2095 1.3 christos bfd_vma offset2_[2 * R_LAST];
2096 1.3 christos int i;
2097 1.1 skrll bfd_vma start_offset;
2098 1.1 skrll
2099 1.1 skrll BFD_ASSERT (got->offset != (bfd_vma) -1);
2100 1.1 skrll
2101 1.1 skrll /* We set entry offsets relative to the .got section (and not the
2102 1.3 christos start of a particular GOT), so that we can use them in
2103 1.1 skrll finish_dynamic_symbol without needing to know the GOT which they come
2104 1.1 skrll from. */
2105 1.3 christos
2106 1.3 christos /* Put offset1 in the middle of offset1_, same for offset2. */
2107 1.3 christos arg_.offset1 = offset1_ + R_LAST;
2108 1.3 christos arg_.offset2 = offset2_ + R_LAST;
2109 1.3 christos
2110 1.3 christos start_offset = got->offset;
2111 1.1 skrll
2112 1.3 christos if (use_neg_got_offsets_p)
2113 1.3 christos /* Setup both negative and positive ranges for R_8, R_16 and R_32. */
2114 1.3 christos i = -(int) R_32 - 1;
2115 1.3 christos else
2116 1.3 christos /* Setup positives ranges for R_8, R_16 and R_32. */
2117 1.3 christos i = (int) R_8;
2118 1.3 christos
2119 1.1 skrll for (; i <= (int) R_32; ++i)
2120 1.3 christos {
2121 1.1 skrll int j;
2122 1.1 skrll size_t n;
2123 1.3 christos
2124 1.3 christos /* Set beginning of the range of offsets I. */
2125 1.1 skrll arg_.offset1[i] = start_offset;
2126 1.3 christos
2127 1.3 christos /* Calculate number of slots that require I offsets. */
2128 1.3 christos j = (i >= 0) ? i : -i - 1;
2129 1.3 christos n = (j >= 1) ? got->n_slots[j - 1] : 0;
2130 1.3 christos n = got->n_slots[j] - n;
2131 1.3 christos
2132 1.3 christos if (use_neg_got_offsets_p && n != 0)
2133 1.3 christos {
2134 1.3 christos if (i < 0)
2135 1.3 christos /* We first fill the positive side of the range, so we might
2136 1.3 christos end up with one empty slot at that side when we can't fit
2137 1.3 christos whole 2-slot entry. Account for that at negative side of
2138 1.3 christos the interval with one additional entry. */
2139 1.3 christos n = n / 2 + 1;
2140 1.3 christos else
2141 1.3 christos /* When the number of slots is odd, make positive side of the
2142 1.3 christos range one entry bigger. */
2143 1.3 christos n = (n + 1) / 2;
2144 1.1 skrll }
2145 1.3 christos
2146 1.3 christos /* N is the number of slots that require I offsets.
2147 1.3 christos Calculate length of the range for I offsets. */
2148 1.1 skrll n = 4 * n;
2149 1.3 christos
2150 1.3 christos /* Set end of the range. */
2151 1.1 skrll arg_.offset2[i] = start_offset + n;
2152 1.3 christos
2153 1.1 skrll start_offset = arg_.offset2[i];
2154 1.1 skrll }
2155 1.3 christos
2156 1.3 christos if (!use_neg_got_offsets_p)
2157 1.3 christos /* Make sure that if we try to switch to negative offsets in
2158 1.3 christos elf_m68k_finalize_got_offsets_1, the assert therein will catch
2159 1.3 christos the bug. */
2160 1.3 christos for (i = R_8; i <= R_32; ++i)
2161 1.1 skrll arg_.offset2[-i - 1] = arg_.offset2[i];
2162 1.3 christos
2163 1.3 christos /* Setup got->offset. offset1[R_8] is either in the middle or at the
2164 1.3 christos beginning of GOT depending on use_neg_got_offsets_p. */
2165 1.1 skrll got->offset = arg_.offset1[R_8];
2166 1.1 skrll
2167 1.3 christos arg_.symndx2h = symndx2h;
2168 1.1 skrll arg_.n_ldm_entries = 0;
2169 1.3 christos
2170 1.1 skrll /* Assign offsets. */
2171 1.1 skrll htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_);
2172 1.3 christos
2173 1.3 christos /* Check offset ranges we have actually assigned. */
2174 1.3 christos for (i = (int) R_8; i <= (int) R_32; ++i)
2175 1.1 skrll BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4);
2176 1.3 christos
2177 1.3 christos *final_offset = start_offset;
2178 1.1 skrll *n_ldm_entries = arg_.n_ldm_entries;
2179 1.1 skrll }
2180 1.1 skrll
2181 1.1 skrll struct elf_m68k_partition_multi_got_arg
2182 1.1 skrll {
2183 1.1 skrll /* The GOT we are adding entries to. Aka big got. */
2184 1.1 skrll struct elf_m68k_got *current_got;
2185 1.1 skrll
2186 1.1 skrll /* Offset to assign the next CURRENT_GOT. */
2187 1.1 skrll bfd_vma offset;
2188 1.1 skrll
2189 1.1 skrll /* Context where memory should be allocated. */
2190 1.1 skrll struct bfd_link_info *info;
2191 1.3 christos
2192 1.1 skrll /* Total number of slots in the .got section.
2193 1.3 christos This is used to calculate size of the .got and .rela.got sections. */
2194 1.1 skrll bfd_vma n_slots;
2195 1.3 christos
2196 1.3 christos /* Difference in numbers of allocated slots in the .got section
2197 1.1 skrll and necessary relocations in the .rela.got section.
2198 1.3 christos This is used to calculate size of the .rela.got section. */
2199 1.1 skrll bfd_vma slots_relas_diff;
2200 1.1 skrll
2201 1.1 skrll /* Error flag. */
2202 1.1 skrll bfd_boolean error_p;
2203 1.1 skrll
2204 1.1 skrll /* Mapping from global symndx to global symbols.
2205 1.1 skrll This is used to build lists of got entries for global symbols. */
2206 1.1 skrll struct elf_m68k_link_hash_entry **symndx2h;
2207 1.1 skrll };
2208 1.3 christos
2209 1.3 christos static void
2210 1.3 christos elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg)
2211 1.3 christos {
2212 1.3 christos bfd_vma n_ldm_entries;
2213 1.3 christos
2214 1.3 christos elf_m68k_finalize_got_offsets (arg->current_got,
2215 1.3 christos (elf_m68k_hash_table (arg->info)
2216 1.3 christos ->use_neg_got_offsets_p),
2217 1.3 christos arg->symndx2h,
2218 1.3 christos &arg->offset, &n_ldm_entries);
2219 1.3 christos
2220 1.3 christos arg->n_slots += arg->current_got->n_slots[R_32];
2221 1.6 christos
2222 1.3 christos if (!bfd_link_pic (arg->info))
2223 1.3 christos /* If we are generating a shared object, we need to
2224 1.3 christos output a R_68K_RELATIVE reloc so that the dynamic
2225 1.3 christos linker can adjust this GOT entry. Overwise we
2226 1.3 christos don't need space in .rela.got for local symbols. */
2227 1.3 christos arg->slots_relas_diff += arg->current_got->local_n_slots;
2228 1.3 christos
2229 1.3 christos /* @LDM relocations require a 2-slot GOT entry, but only
2230 1.3 christos one relocation. Account for that. */
2231 1.3 christos arg->slots_relas_diff += n_ldm_entries;
2232 1.3 christos
2233 1.3 christos BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots);
2234 1.3 christos }
2235 1.3 christos
2236 1.1 skrll
2237 1.1 skrll /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT
2238 1.1 skrll or start a new CURRENT_GOT. */
2239 1.1 skrll
2240 1.1 skrll static int
2241 1.1 skrll elf_m68k_partition_multi_got_1 (void **_entry, void *_arg)
2242 1.1 skrll {
2243 1.1 skrll struct elf_m68k_bfd2got_entry *entry;
2244 1.1 skrll struct elf_m68k_partition_multi_got_arg *arg;
2245 1.1 skrll struct elf_m68k_got *got;
2246 1.1 skrll struct elf_m68k_got diff_;
2247 1.1 skrll struct elf_m68k_got *diff;
2248 1.1 skrll
2249 1.1 skrll entry = (struct elf_m68k_bfd2got_entry *) *_entry;
2250 1.1 skrll arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2251 1.1 skrll
2252 1.1 skrll got = entry->got;
2253 1.1 skrll BFD_ASSERT (got != NULL);
2254 1.1 skrll BFD_ASSERT (got->offset == (bfd_vma) -1);
2255 1.1 skrll
2256 1.1 skrll diff = NULL;
2257 1.1 skrll
2258 1.1 skrll if (arg->current_got != NULL)
2259 1.1 skrll /* Construct diff. */
2260 1.1 skrll {
2261 1.3 christos diff = &diff_;
2262 1.1 skrll elf_m68k_init_got (diff);
2263 1.1 skrll
2264 1.1 skrll if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff))
2265 1.1 skrll {
2266 1.1 skrll if (diff->offset == 0)
2267 1.1 skrll /* Offset set to 0 in the diff_ indicates an error. */
2268 1.1 skrll {
2269 1.1 skrll arg->error_p = TRUE;
2270 1.1 skrll goto final_return;
2271 1.1 skrll }
2272 1.1 skrll
2273 1.1 skrll if (elf_m68k_hash_table (arg->info)->allow_multigot_p)
2274 1.1 skrll {
2275 1.3 christos elf_m68k_clear_got (diff);
2276 1.1 skrll /* Schedule to finish up current_got and start new one. */
2277 1.1 skrll diff = NULL;
2278 1.1 skrll }
2279 1.1 skrll /* else
2280 1.1 skrll Merge GOTs no matter what. If big GOT overflows,
2281 1.1 skrll we'll fail in relocate_section due to truncated relocations.
2282 1.1 skrll
2283 1.1 skrll ??? May be fail earlier? E.g., in can_merge_gots. */
2284 1.1 skrll }
2285 1.1 skrll }
2286 1.1 skrll else
2287 1.1 skrll /* Diff of got against empty current_got is got itself. */
2288 1.3 christos {
2289 1.1 skrll /* Create empty current_got to put subsequent GOTs to. */
2290 1.1 skrll arg->current_got = elf_m68k_create_empty_got (arg->info);
2291 1.1 skrll if (arg->current_got == NULL)
2292 1.1 skrll {
2293 1.1 skrll arg->error_p = TRUE;
2294 1.1 skrll goto final_return;
2295 1.1 skrll }
2296 1.1 skrll
2297 1.1 skrll arg->current_got->offset = arg->offset;
2298 1.1 skrll
2299 1.1 skrll diff = got;
2300 1.1 skrll }
2301 1.1 skrll
2302 1.1 skrll if (diff != NULL)
2303 1.3 christos {
2304 1.1 skrll if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info))
2305 1.1 skrll {
2306 1.1 skrll arg->error_p = TRUE;
2307 1.1 skrll goto final_return;
2308 1.1 skrll }
2309 1.1 skrll
2310 1.1 skrll /* Now we can free GOT. */
2311 1.1 skrll elf_m68k_clear_got (got);
2312 1.3 christos
2313 1.1 skrll entry->got = arg->current_got;
2314 1.1 skrll }
2315 1.1 skrll else
2316 1.3 christos {
2317 1.3 christos /* Finish up current_got. */
2318 1.3 christos elf_m68k_partition_multi_got_2 (arg);
2319 1.1 skrll
2320 1.1 skrll /* Schedule to start a new current_got. */
2321 1.1 skrll arg->current_got = NULL;
2322 1.1 skrll
2323 1.1 skrll /* Retry. */
2324 1.1 skrll if (!elf_m68k_partition_multi_got_1 (_entry, _arg))
2325 1.1 skrll {
2326 1.1 skrll BFD_ASSERT (arg->error_p);
2327 1.1 skrll goto final_return;
2328 1.1 skrll }
2329 1.1 skrll }
2330 1.1 skrll
2331 1.1 skrll final_return:
2332 1.1 skrll if (diff != NULL)
2333 1.1 skrll elf_m68k_clear_got (diff);
2334 1.10.12.1 pgoyette
2335 1.1 skrll return !arg->error_p;
2336 1.1 skrll }
2337 1.1 skrll
2338 1.1 skrll /* Helper function to build symndx2h mapping. */
2339 1.1 skrll
2340 1.1 skrll static bfd_boolean
2341 1.1 skrll elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h,
2342 1.1 skrll void *_arg)
2343 1.1 skrll {
2344 1.1 skrll struct elf_m68k_link_hash_entry *h;
2345 1.1 skrll
2346 1.1 skrll h = elf_m68k_hash_entry (_h);
2347 1.1 skrll
2348 1.1 skrll if (h->got_entry_key != 0)
2349 1.1 skrll /* H has at least one entry in the GOT. */
2350 1.1 skrll {
2351 1.1 skrll struct elf_m68k_partition_multi_got_arg *arg;
2352 1.1 skrll
2353 1.1 skrll arg = (struct elf_m68k_partition_multi_got_arg *) _arg;
2354 1.1 skrll
2355 1.1 skrll BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL);
2356 1.1 skrll arg->symndx2h[h->got_entry_key] = h;
2357 1.1 skrll }
2358 1.1 skrll
2359 1.1 skrll return TRUE;
2360 1.1 skrll }
2361 1.1 skrll
2362 1.1 skrll /* Merge GOTs of some BFDs, assign offsets to GOT entries and build
2363 1.1 skrll lists of GOT entries for global symbols.
2364 1.1 skrll Calculate sizes of .got and .rela.got sections. */
2365 1.1 skrll
2366 1.1 skrll static bfd_boolean
2367 1.1 skrll elf_m68k_partition_multi_got (struct bfd_link_info *info)
2368 1.1 skrll {
2369 1.1 skrll struct elf_m68k_multi_got *multi_got;
2370 1.1 skrll struct elf_m68k_partition_multi_got_arg arg_;
2371 1.1 skrll
2372 1.1 skrll multi_got = elf_m68k_multi_got (info);
2373 1.1 skrll
2374 1.1 skrll arg_.current_got = NULL;
2375 1.1 skrll arg_.offset = 0;
2376 1.3 christos arg_.info = info;
2377 1.3 christos arg_.n_slots = 0;
2378 1.1 skrll arg_.slots_relas_diff = 0;
2379 1.1 skrll arg_.error_p = FALSE;
2380 1.1 skrll
2381 1.1 skrll if (multi_got->bfd2got != NULL)
2382 1.1 skrll {
2383 1.1 skrll /* Initialize symndx2h mapping. */
2384 1.1 skrll {
2385 1.1 skrll arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx
2386 1.1 skrll * sizeof (*arg_.symndx2h));
2387 1.1 skrll if (arg_.symndx2h == NULL)
2388 1.1 skrll return FALSE;
2389 1.1 skrll
2390 1.1 skrll elf_link_hash_traverse (elf_hash_table (info),
2391 1.1 skrll elf_m68k_init_symndx2h_1, &arg_);
2392 1.1 skrll }
2393 1.1 skrll
2394 1.1 skrll /* Partition. */
2395 1.1 skrll htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1,
2396 1.1 skrll &arg_);
2397 1.1 skrll if (arg_.error_p)
2398 1.1 skrll {
2399 1.1 skrll free (arg_.symndx2h);
2400 1.1 skrll arg_.symndx2h = NULL;
2401 1.1 skrll
2402 1.1 skrll return FALSE;
2403 1.1 skrll }
2404 1.1 skrll
2405 1.3 christos /* Finish up last current_got. */
2406 1.1 skrll elf_m68k_partition_multi_got_2 (&arg_);
2407 1.1 skrll
2408 1.1 skrll free (arg_.symndx2h);
2409 1.1 skrll }
2410 1.1 skrll
2411 1.1 skrll if (elf_hash_table (info)->dynobj != NULL)
2412 1.1 skrll /* Set sizes of .got and .rela.got sections. */
2413 1.1 skrll {
2414 1.1 skrll asection *s;
2415 1.10.12.1 pgoyette
2416 1.1 skrll s = elf_hash_table (info)->sgot;
2417 1.3 christos if (s != NULL)
2418 1.1 skrll s->size = arg_.offset;
2419 1.3 christos else
2420 1.1 skrll BFD_ASSERT (arg_.offset == 0);
2421 1.3 christos
2422 1.3 christos BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots);
2423 1.1 skrll arg_.n_slots -= arg_.slots_relas_diff;
2424 1.10.12.1 pgoyette
2425 1.1 skrll s = elf_hash_table (info)->srelgot;
2426 1.3 christos if (s != NULL)
2427 1.1 skrll s->size = arg_.n_slots * sizeof (Elf32_External_Rela);
2428 1.3 christos else
2429 1.1 skrll BFD_ASSERT (arg_.n_slots == 0);
2430 1.1 skrll }
2431 1.1 skrll else
2432 1.1 skrll BFD_ASSERT (multi_got->bfd2got == NULL);
2433 1.1 skrll
2434 1.1 skrll return TRUE;
2435 1.1 skrll }
2436 1.1 skrll
2437 1.1 skrll /* Copy any information related to dynamic linking from a pre-existing
2438 1.1 skrll symbol to a newly created symbol. Also called to copy flags and
2439 1.1 skrll other back-end info to a weakdef, in which case the symbol is not
2440 1.1 skrll newly created and plt/got refcounts and dynamic indices should not
2441 1.1 skrll be copied. */
2442 1.1 skrll
2443 1.1 skrll static void
2444 1.1 skrll elf_m68k_copy_indirect_symbol (struct bfd_link_info *info,
2445 1.1 skrll struct elf_link_hash_entry *_dir,
2446 1.1 skrll struct elf_link_hash_entry *_ind)
2447 1.1 skrll {
2448 1.1 skrll struct elf_m68k_link_hash_entry *dir;
2449 1.1 skrll struct elf_m68k_link_hash_entry *ind;
2450 1.1 skrll
2451 1.1 skrll _bfd_elf_link_hash_copy_indirect (info, _dir, _ind);
2452 1.1 skrll
2453 1.1 skrll if (_ind->root.type != bfd_link_hash_indirect)
2454 1.1 skrll return;
2455 1.1 skrll
2456 1.1 skrll dir = elf_m68k_hash_entry (_dir);
2457 1.1 skrll ind = elf_m68k_hash_entry (_ind);
2458 1.3 christos
2459 1.3 christos /* Any absolute non-dynamic relocations against an indirect or weak
2460 1.3 christos definition will be against the target symbol. */
2461 1.3 christos _dir->non_got_ref |= _ind->non_got_ref;
2462 1.1 skrll
2463 1.1 skrll /* We might have a direct symbol already having entries in the GOTs.
2464 1.1 skrll Update its key only in case indirect symbol has GOT entries and
2465 1.1 skrll assert that both indirect and direct symbols don't have GOT entries
2466 1.1 skrll at the same time. */
2467 1.1 skrll if (ind->got_entry_key != 0)
2468 1.1 skrll {
2469 1.2 mbalmer BFD_ASSERT (dir->got_entry_key == 0);
2470 1.1 skrll /* Assert that GOTs aren't partitioned yet. */
2471 1.1 skrll BFD_ASSERT (ind->glist == NULL);
2472 1.1 skrll
2473 1.1 skrll dir->got_entry_key = ind->got_entry_key;
2474 1.1 skrll ind->got_entry_key = 0;
2475 1.1 skrll }
2476 1.1 skrll }
2477 1.1 skrll
2478 1.1 skrll /* Look through the relocs for a section during the first phase, and
2479 1.1 skrll allocate space in the global offset table or procedure linkage
2480 1.1 skrll table. */
2481 1.1 skrll
2482 1.4 christos static bfd_boolean
2483 1.4 christos elf_m68k_check_relocs (bfd *abfd,
2484 1.4 christos struct bfd_link_info *info,
2485 1.4 christos asection *sec,
2486 1.1 skrll const Elf_Internal_Rela *relocs)
2487 1.1 skrll {
2488 1.1 skrll bfd *dynobj;
2489 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
2490 1.1 skrll struct elf_link_hash_entry **sym_hashes;
2491 1.1 skrll const Elf_Internal_Rela *rel;
2492 1.1 skrll const Elf_Internal_Rela *rel_end;
2493 1.1 skrll asection *sreloc;
2494 1.1 skrll struct elf_m68k_got *got;
2495 1.6 christos
2496 1.1 skrll if (bfd_link_relocatable (info))
2497 1.1 skrll return TRUE;
2498 1.1 skrll
2499 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2500 1.1 skrll symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2501 1.1 skrll sym_hashes = elf_sym_hashes (abfd);
2502 1.1 skrll
2503 1.1 skrll sreloc = NULL;
2504 1.1 skrll
2505 1.1 skrll got = NULL;
2506 1.1 skrll
2507 1.1 skrll rel_end = relocs + sec->reloc_count;
2508 1.1 skrll for (rel = relocs; rel < rel_end; rel++)
2509 1.1 skrll {
2510 1.1 skrll unsigned long r_symndx;
2511 1.1 skrll struct elf_link_hash_entry *h;
2512 1.1 skrll
2513 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
2514 1.1 skrll
2515 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
2516 1.1 skrll h = NULL;
2517 1.1 skrll else
2518 1.1 skrll {
2519 1.1 skrll h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2520 1.1 skrll while (h->root.type == bfd_link_hash_indirect
2521 1.1 skrll || h->root.type == bfd_link_hash_warning)
2522 1.1 skrll h = (struct elf_link_hash_entry *) h->root.u.i.link;
2523 1.1 skrll }
2524 1.1 skrll
2525 1.1 skrll switch (ELF32_R_TYPE (rel->r_info))
2526 1.1 skrll {
2527 1.1 skrll case R_68K_GOT8:
2528 1.1 skrll case R_68K_GOT16:
2529 1.1 skrll case R_68K_GOT32:
2530 1.1 skrll if (h != NULL
2531 1.1 skrll && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2532 1.1 skrll break;
2533 1.3 christos /* Fall through. */
2534 1.3 christos
2535 1.1 skrll /* Relative GOT relocations. */
2536 1.1 skrll case R_68K_GOT8O:
2537 1.1 skrll case R_68K_GOT16O:
2538 1.3 christos case R_68K_GOT32O:
2539 1.3 christos /* Fall through. */
2540 1.3 christos
2541 1.3 christos /* TLS relocations. */
2542 1.3 christos case R_68K_TLS_GD8:
2543 1.3 christos case R_68K_TLS_GD16:
2544 1.3 christos case R_68K_TLS_GD32:
2545 1.3 christos case R_68K_TLS_LDM8:
2546 1.3 christos case R_68K_TLS_LDM16:
2547 1.3 christos case R_68K_TLS_LDM32:
2548 1.3 christos case R_68K_TLS_IE8:
2549 1.3 christos case R_68K_TLS_IE16:
2550 1.3 christos case R_68K_TLS_IE32:
2551 1.3 christos
2552 1.3 christos case R_68K_TLS_TPREL32:
2553 1.3 christos case R_68K_TLS_DTPREL32:
2554 1.3 christos
2555 1.6 christos if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32
2556 1.3 christos && bfd_link_pic (info))
2557 1.3 christos /* Do the special chorus for libraries with static TLS. */
2558 1.3 christos info->flags |= DF_STATIC_TLS;
2559 1.1 skrll
2560 1.1 skrll /* This symbol requires a global offset table entry. */
2561 1.1 skrll
2562 1.1 skrll if (dynobj == NULL)
2563 1.1 skrll {
2564 1.1 skrll /* Create the .got section. */
2565 1.1 skrll elf_hash_table (info)->dynobj = dynobj = abfd;
2566 1.1 skrll if (!_bfd_elf_create_got_section (dynobj, info))
2567 1.1 skrll return FALSE;
2568 1.1 skrll }
2569 1.1 skrll
2570 1.1 skrll if (got == NULL)
2571 1.1 skrll {
2572 1.1 skrll struct elf_m68k_bfd2got_entry *bfd2got_entry;
2573 1.1 skrll
2574 1.1 skrll bfd2got_entry
2575 1.1 skrll = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
2576 1.1 skrll abfd, FIND_OR_CREATE, info);
2577 1.1 skrll if (bfd2got_entry == NULL)
2578 1.1 skrll return FALSE;
2579 1.1 skrll
2580 1.1 skrll got = bfd2got_entry->got;
2581 1.1 skrll BFD_ASSERT (got != NULL);
2582 1.1 skrll }
2583 1.1 skrll
2584 1.1 skrll {
2585 1.1 skrll struct elf_m68k_got_entry *got_entry;
2586 1.1 skrll
2587 1.1 skrll /* Add entry to got. */
2588 1.1 skrll got_entry = elf_m68k_add_entry_to_got (got, h, abfd,
2589 1.1 skrll ELF32_R_TYPE (rel->r_info),
2590 1.1 skrll r_symndx, info);
2591 1.1 skrll if (got_entry == NULL)
2592 1.1 skrll return FALSE;
2593 1.1 skrll
2594 1.1 skrll if (got_entry->u.s1.refcount == 1)
2595 1.1 skrll {
2596 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
2597 1.1 skrll if (h != NULL
2598 1.1 skrll && h->dynindx == -1
2599 1.1 skrll && !h->forced_local)
2600 1.1 skrll {
2601 1.1 skrll if (!bfd_elf_link_record_dynamic_symbol (info, h))
2602 1.1 skrll return FALSE;
2603 1.1 skrll }
2604 1.1 skrll }
2605 1.1 skrll }
2606 1.1 skrll
2607 1.1 skrll break;
2608 1.1 skrll
2609 1.1 skrll case R_68K_PLT8:
2610 1.1 skrll case R_68K_PLT16:
2611 1.1 skrll case R_68K_PLT32:
2612 1.1 skrll /* This symbol requires a procedure linkage table entry. We
2613 1.10.12.1 pgoyette actually build the entry in adjust_dynamic_symbol,
2614 1.10.12.1 pgoyette because this might be a case of linking PIC code which is
2615 1.10.12.1 pgoyette never referenced by a dynamic object, in which case we
2616 1.10.12.1 pgoyette don't need to generate a procedure linkage table entry
2617 1.1 skrll after all. */
2618 1.1 skrll
2619 1.1 skrll /* If this is a local symbol, we resolve it directly without
2620 1.1 skrll creating a procedure linkage table entry. */
2621 1.1 skrll if (h == NULL)
2622 1.1 skrll continue;
2623 1.1 skrll
2624 1.1 skrll h->needs_plt = 1;
2625 1.1 skrll h->plt.refcount++;
2626 1.1 skrll break;
2627 1.1 skrll
2628 1.1 skrll case R_68K_PLT8O:
2629 1.1 skrll case R_68K_PLT16O:
2630 1.1 skrll case R_68K_PLT32O:
2631 1.1 skrll /* This symbol requires a procedure linkage table entry. */
2632 1.1 skrll
2633 1.1 skrll if (h == NULL)
2634 1.1 skrll {
2635 1.1 skrll /* It does not make sense to have this relocation for a
2636 1.1 skrll local symbol. FIXME: does it? How to handle it if
2637 1.1 skrll it does make sense? */
2638 1.1 skrll bfd_set_error (bfd_error_bad_value);
2639 1.1 skrll return FALSE;
2640 1.1 skrll }
2641 1.1 skrll
2642 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
2643 1.1 skrll if (h->dynindx == -1
2644 1.1 skrll && !h->forced_local)
2645 1.1 skrll {
2646 1.1 skrll if (!bfd_elf_link_record_dynamic_symbol (info, h))
2647 1.1 skrll return FALSE;
2648 1.1 skrll }
2649 1.1 skrll
2650 1.1 skrll h->needs_plt = 1;
2651 1.1 skrll h->plt.refcount++;
2652 1.1 skrll break;
2653 1.1 skrll
2654 1.1 skrll case R_68K_PC8:
2655 1.1 skrll case R_68K_PC16:
2656 1.1 skrll case R_68K_PC32:
2657 1.1 skrll /* If we are creating a shared library and this is not a local
2658 1.1 skrll symbol, we need to copy the reloc into the shared library.
2659 1.1 skrll However when linking with -Bsymbolic and this is a global
2660 1.1 skrll symbol which is defined in an object we are including in the
2661 1.1 skrll link (i.e., DEF_REGULAR is set), then we can resolve the
2662 1.1 skrll reloc directly. At this point we have not seen all the input
2663 1.1 skrll files, so it is possible that DEF_REGULAR is not set now but
2664 1.1 skrll will be set later (it is never cleared). We account for that
2665 1.1 skrll possibility below by storing information in the
2666 1.6 christos pcrel_relocs_copied field of the hash table entry. */
2667 1.1 skrll if (!(bfd_link_pic (info)
2668 1.1 skrll && (sec->flags & SEC_ALLOC) != 0
2669 1.6 christos && h != NULL
2670 1.1 skrll && (!SYMBOLIC_BIND (info, h)
2671 1.1 skrll || h->root.type == bfd_link_hash_defweak
2672 1.1 skrll || !h->def_regular)))
2673 1.1 skrll {
2674 1.1 skrll if (h != NULL)
2675 1.1 skrll {
2676 1.1 skrll /* Make sure a plt entry is created for this symbol if
2677 1.1 skrll it turns out to be a function defined by a dynamic
2678 1.1 skrll object. */
2679 1.1 skrll h->plt.refcount++;
2680 1.1 skrll }
2681 1.1 skrll break;
2682 1.1 skrll }
2683 1.1 skrll /* Fall through. */
2684 1.1 skrll case R_68K_8:
2685 1.1 skrll case R_68K_16:
2686 1.4 christos case R_68K_32:
2687 1.4 christos /* We don't need to handle relocs into sections not going into
2688 1.4 christos the "real" output. */
2689 1.4 christos if ((sec->flags & SEC_ALLOC) == 0)
2690 1.4 christos break;
2691 1.1 skrll
2692 1.1 skrll if (h != NULL)
2693 1.1 skrll {
2694 1.1 skrll /* Make sure a plt entry is created for this symbol if it
2695 1.1 skrll turns out to be a function defined by a dynamic object. */
2696 1.3 christos h->plt.refcount++;
2697 1.6 christos
2698 1.3 christos if (bfd_link_executable (info))
2699 1.3 christos /* This symbol needs a non-GOT reference. */
2700 1.1 skrll h->non_got_ref = 1;
2701 1.1 skrll }
2702 1.1 skrll
2703 1.1 skrll /* If we are creating a shared library, we need to copy the
2704 1.10.12.1 pgoyette reloc into the shared library. */
2705 1.10.12.1 pgoyette if (bfd_link_pic (info)
2706 1.10.12.1 pgoyette && (h == NULL
2707 1.1 skrll || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
2708 1.1 skrll {
2709 1.1 skrll /* When creating a shared object, we must copy these
2710 1.1 skrll reloc types into the output file. We create a reloc
2711 1.1 skrll section in dynobj and make room for this reloc. */
2712 1.1 skrll if (sreloc == NULL)
2713 1.3 christos {
2714 1.3 christos sreloc = _bfd_elf_make_dynamic_reloc_section
2715 1.1 skrll (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
2716 1.3 christos
2717 1.1 skrll if (sreloc == NULL)
2718 1.1 skrll return FALSE;
2719 1.1 skrll }
2720 1.1 skrll
2721 1.1 skrll if (sec->flags & SEC_READONLY
2722 1.1 skrll /* Don't set DF_TEXTREL yet for PC relative
2723 1.1 skrll relocations, they might be discarded later. */
2724 1.1 skrll && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2725 1.1 skrll || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2726 1.7 christos || ELF32_R_TYPE (rel->r_info) == R_68K_PC32))
2727 1.7 christos {
2728 1.7 christos if (info->warn_shared_textrel)
2729 1.8 christos (*_bfd_error_handler)
2730 1.8 christos (_("warning: dynamic relocation to `%s' in readonly section `%s'"),
2731 1.7 christos h->root.root.string, sec->name);
2732 1.7 christos info->flags |= DF_TEXTREL;
2733 1.1 skrll }
2734 1.1 skrll
2735 1.1 skrll sreloc->size += sizeof (Elf32_External_Rela);
2736 1.1 skrll
2737 1.1 skrll /* We count the number of PC relative relocations we have
2738 1.1 skrll entered for this symbol, so that we can discard them
2739 1.1 skrll again if, in the -Bsymbolic case, the symbol is later
2740 1.1 skrll defined by a regular object, or, in the normal shared
2741 1.1 skrll case, the symbol is forced to be local. Note that this
2742 1.1 skrll function is only called if we are using an m68kelf linker
2743 1.1 skrll hash table, which means that h is really a pointer to an
2744 1.1 skrll elf_m68k_link_hash_entry. */
2745 1.1 skrll if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8
2746 1.1 skrll || ELF32_R_TYPE (rel->r_info) == R_68K_PC16
2747 1.1 skrll || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)
2748 1.1 skrll {
2749 1.1 skrll struct elf_m68k_pcrel_relocs_copied *p;
2750 1.1 skrll struct elf_m68k_pcrel_relocs_copied **head;
2751 1.1 skrll
2752 1.1 skrll if (h != NULL)
2753 1.1 skrll {
2754 1.1 skrll struct elf_m68k_link_hash_entry *eh
2755 1.1 skrll = elf_m68k_hash_entry (h);
2756 1.1 skrll head = &eh->pcrel_relocs_copied;
2757 1.1 skrll }
2758 1.1 skrll else
2759 1.1 skrll {
2760 1.1 skrll asection *s;
2761 1.3 christos void *vpp;
2762 1.3 christos Elf_Internal_Sym *isym;
2763 1.3 christos
2764 1.3 christos isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache,
2765 1.3 christos abfd, r_symndx);
2766 1.3 christos if (isym == NULL)
2767 1.1 skrll return FALSE;
2768 1.3 christos
2769 1.1 skrll s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2770 1.3 christos if (s == NULL)
2771 1.1 skrll s = sec;
2772 1.1 skrll
2773 1.1 skrll vpp = &elf_section_data (s)->local_dynrel;
2774 1.1 skrll head = (struct elf_m68k_pcrel_relocs_copied **) vpp;
2775 1.1 skrll }
2776 1.1 skrll
2777 1.1 skrll for (p = *head; p != NULL; p = p->next)
2778 1.1 skrll if (p->section == sreloc)
2779 1.1 skrll break;
2780 1.1 skrll
2781 1.1 skrll if (p == NULL)
2782 1.1 skrll {
2783 1.1 skrll p = ((struct elf_m68k_pcrel_relocs_copied *)
2784 1.1 skrll bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
2785 1.1 skrll if (p == NULL)
2786 1.1 skrll return FALSE;
2787 1.1 skrll p->next = *head;
2788 1.1 skrll *head = p;
2789 1.1 skrll p->section = sreloc;
2790 1.1 skrll p->count = 0;
2791 1.1 skrll }
2792 1.1 skrll
2793 1.1 skrll ++p->count;
2794 1.1 skrll }
2795 1.1 skrll }
2796 1.1 skrll
2797 1.1 skrll break;
2798 1.1 skrll
2799 1.1 skrll /* This relocation describes the C++ object vtable hierarchy.
2800 1.1 skrll Reconstruct it for later use during GC. */
2801 1.1 skrll case R_68K_GNU_VTINHERIT:
2802 1.1 skrll if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2803 1.1 skrll return FALSE;
2804 1.1 skrll break;
2805 1.1 skrll
2806 1.1 skrll /* This relocation describes which C++ vtable entries are actually
2807 1.1 skrll used. Record for later use during GC. */
2808 1.1 skrll case R_68K_GNU_VTENTRY:
2809 1.1 skrll BFD_ASSERT (h != NULL);
2810 1.1 skrll if (h != NULL
2811 1.1 skrll && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2812 1.1 skrll return FALSE;
2813 1.1 skrll break;
2814 1.1 skrll
2815 1.1 skrll default:
2816 1.1 skrll break;
2817 1.1 skrll }
2818 1.1 skrll }
2819 1.1 skrll
2820 1.1 skrll return TRUE;
2821 1.1 skrll }
2822 1.1 skrll
2823 1.1 skrll /* Return the section that should be marked against GC for a given
2824 1.1 skrll relocation. */
2825 1.1 skrll
2826 1.1 skrll static asection *
2827 1.1 skrll elf_m68k_gc_mark_hook (asection *sec,
2828 1.1 skrll struct bfd_link_info *info,
2829 1.1 skrll Elf_Internal_Rela *rel,
2830 1.1 skrll struct elf_link_hash_entry *h,
2831 1.1 skrll Elf_Internal_Sym *sym)
2832 1.1 skrll {
2833 1.1 skrll if (h != NULL)
2834 1.1 skrll switch (ELF32_R_TYPE (rel->r_info))
2835 1.1 skrll {
2836 1.1 skrll case R_68K_GNU_VTINHERIT:
2837 1.1 skrll case R_68K_GNU_VTENTRY:
2838 1.1 skrll return NULL;
2839 1.1 skrll }
2840 1.1 skrll
2841 1.1 skrll return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2842 1.1 skrll }
2843 1.1 skrll
2844 1.1 skrll /* Return the type of PLT associated with OUTPUT_BFD. */
2846 1.1 skrll
2847 1.1 skrll static const struct elf_m68k_plt_info *
2848 1.1 skrll elf_m68k_get_plt_info (bfd *output_bfd)
2849 1.1 skrll {
2850 1.1 skrll unsigned int features;
2851 1.1 skrll
2852 1.1 skrll features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd));
2853 1.1 skrll if (features & cpu32)
2854 1.1 skrll return &elf_cpu32_plt_info;
2855 1.1 skrll if (features & mcfisa_b)
2856 1.1 skrll return &elf_isab_plt_info;
2857 1.1 skrll if (features & mcfisa_c)
2858 1.1 skrll return &elf_isac_plt_info;
2859 1.1 skrll return &elf_m68k_plt_info;
2860 1.1 skrll }
2861 1.1 skrll
2862 1.1 skrll /* This function is called after all the input files have been read,
2863 1.1 skrll and the input sections have been assigned to output sections.
2864 1.1 skrll It's a convenient place to determine the PLT style. */
2865 1.1 skrll
2866 1.1 skrll static bfd_boolean
2867 1.1 skrll elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2868 1.1 skrll {
2869 1.1 skrll /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got
2870 1.1 skrll sections. */
2871 1.1 skrll if (!elf_m68k_partition_multi_got (info))
2872 1.1 skrll return FALSE;
2873 1.1 skrll
2874 1.1 skrll elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd);
2875 1.1 skrll return TRUE;
2876 1.1 skrll }
2877 1.1 skrll
2878 1.1 skrll /* Adjust a symbol defined by a dynamic object and referenced by a
2879 1.1 skrll regular object. The current definition is in some section of the
2880 1.1 skrll dynamic object, but we're not including those sections. We have to
2881 1.1 skrll change the definition to something the rest of the link can
2882 1.1 skrll understand. */
2883 1.4 christos
2884 1.4 christos static bfd_boolean
2885 1.1 skrll elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info,
2886 1.1 skrll struct elf_link_hash_entry *h)
2887 1.1 skrll {
2888 1.1 skrll struct elf_m68k_link_hash_table *htab;
2889 1.1 skrll bfd *dynobj;
2890 1.1 skrll asection *s;
2891 1.10.12.1 pgoyette
2892 1.1 skrll htab = elf_m68k_hash_table (info);
2893 1.1 skrll dynobj = htab->root.dynobj;
2894 1.1 skrll
2895 1.1 skrll /* Make sure we know what is going on here. */
2896 1.5 matt BFD_ASSERT (dynobj != NULL
2897 1.10.12.1 pgoyette && (h->needs_plt
2898 1.1 skrll || h->type == STT_GNU_IFUNC
2899 1.1 skrll || h->is_weakalias
2900 1.1 skrll || (h->def_dynamic
2901 1.1 skrll && h->ref_regular
2902 1.1 skrll && !h->def_regular)));
2903 1.1 skrll
2904 1.1 skrll /* If this is a function, put it in the procedure linkage table. We
2905 1.5 matt will fill in the contents of the procedure linkage table later,
2906 1.1 skrll when we know the address of the .got section. */
2907 1.1 skrll if ((h->type == STT_FUNC || h->type == STT_GNU_IFUNC)
2908 1.1 skrll || h->needs_plt)
2909 1.10.12.1 pgoyette {
2910 1.10.12.1 pgoyette if ((h->plt.refcount <= 0
2911 1.10.12.1 pgoyette || SYMBOL_CALLS_LOCAL (info, h)
2912 1.1 skrll || ((ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2913 1.1 skrll || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2914 1.1 skrll && h->root.type == bfd_link_hash_undefweak))
2915 1.1 skrll /* We must always create the plt entry if it was referenced
2916 1.1 skrll by a PLTxxO relocation. In this case we already recorded
2917 1.1 skrll it as a dynamic symbol. */
2918 1.1 skrll && h->dynindx == -1)
2919 1.1 skrll {
2920 1.1 skrll /* This case can occur if we saw a PLTxx reloc in an input
2921 1.1 skrll file, but the symbol was never referred to by a dynamic
2922 1.1 skrll object, or if all references were garbage collected. In
2923 1.1 skrll such a case, we don't actually need to build a procedure
2924 1.1 skrll linkage table, and we can just do a PCxx reloc instead. */
2925 1.1 skrll h->plt.offset = (bfd_vma) -1;
2926 1.1 skrll h->needs_plt = 0;
2927 1.1 skrll return TRUE;
2928 1.1 skrll }
2929 1.1 skrll
2930 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
2931 1.1 skrll if (h->dynindx == -1
2932 1.1 skrll && !h->forced_local)
2933 1.1 skrll {
2934 1.1 skrll if (! bfd_elf_link_record_dynamic_symbol (info, h))
2935 1.1 skrll return FALSE;
2936 1.10.12.1 pgoyette }
2937 1.1 skrll
2938 1.1 skrll s = htab->root.splt;
2939 1.1 skrll BFD_ASSERT (s != NULL);
2940 1.1 skrll
2941 1.1 skrll /* If this is the first .plt entry, make room for the special
2942 1.1 skrll first entry. */
2943 1.1 skrll if (s->size == 0)
2944 1.1 skrll s->size = htab->plt_info->size;
2945 1.1 skrll
2946 1.1 skrll /* If this symbol is not defined in a regular file, and we are
2947 1.1 skrll not generating a shared library, then set the symbol to this
2948 1.1 skrll location in the .plt. This is required to make function
2949 1.6 christos pointers compare as equal between the normal executable and
2950 1.1 skrll the shared library. */
2951 1.1 skrll if (!bfd_link_pic (info)
2952 1.1 skrll && !h->def_regular)
2953 1.1 skrll {
2954 1.1 skrll h->root.u.def.section = s;
2955 1.1 skrll h->root.u.def.value = s->size;
2956 1.1 skrll }
2957 1.1 skrll
2958 1.1 skrll h->plt.offset = s->size;
2959 1.1 skrll
2960 1.1 skrll /* Make room for this entry. */
2961 1.1 skrll s->size += htab->plt_info->size;
2962 1.1 skrll
2963 1.10.12.1 pgoyette /* We also need to make an entry in the .got.plt section, which
2964 1.1 skrll will be placed in the .got section by the linker script. */
2965 1.1 skrll s = htab->root.sgotplt;
2966 1.1 skrll BFD_ASSERT (s != NULL);
2967 1.1 skrll s->size += 4;
2968 1.10.12.1 pgoyette
2969 1.1 skrll /* We also need to make an entry in the .rela.plt section. */
2970 1.1 skrll s = htab->root.srelplt;
2971 1.1 skrll BFD_ASSERT (s != NULL);
2972 1.1 skrll s->size += sizeof (Elf32_External_Rela);
2973 1.1 skrll
2974 1.1 skrll return TRUE;
2975 1.1 skrll }
2976 1.1 skrll
2977 1.1 skrll /* Reinitialize the plt offset now that it is not used as a reference
2978 1.1 skrll count any more. */
2979 1.1 skrll h->plt.offset = (bfd_vma) -1;
2980 1.1 skrll
2981 1.1 skrll /* If this is a weak symbol, and there is a real definition, the
2982 1.10.12.1 pgoyette processor independent code will have arranged for us to see the
2983 1.1 skrll real definition first, and we can just use the same value. */
2984 1.10.12.1 pgoyette if (h->is_weakalias)
2985 1.10.12.1 pgoyette {
2986 1.10.12.1 pgoyette struct elf_link_hash_entry *def = weakdef (h);
2987 1.10.12.1 pgoyette BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2988 1.1 skrll h->root.u.def.section = def->root.u.def.section;
2989 1.1 skrll h->root.u.def.value = def->root.u.def.value;
2990 1.1 skrll return TRUE;
2991 1.1 skrll }
2992 1.1 skrll
2993 1.1 skrll /* This is a reference to a symbol defined by a dynamic object which
2994 1.1 skrll is not a function. */
2995 1.1 skrll
2996 1.1 skrll /* If we are creating a shared library, we must presume that the
2997 1.1 skrll only references to the symbol are via the global offset table.
2998 1.6 christos For such cases we need not do anything here; the relocations will
2999 1.1 skrll be handled correctly by relocate_section. */
3000 1.1 skrll if (bfd_link_pic (info))
3001 1.3 christos return TRUE;
3002 1.3 christos
3003 1.3 christos /* If there are no references to this symbol that do not use the
3004 1.3 christos GOT, we don't need to generate a copy reloc. */
3005 1.3 christos if (!h->non_got_ref)
3006 1.1 skrll return TRUE;
3007 1.1 skrll
3008 1.1 skrll /* We must allocate the symbol in our .dynbss section, which will
3009 1.1 skrll become part of the .bss section of the executable. There will be
3010 1.1 skrll an entry for this symbol in the .dynsym section. The dynamic
3011 1.1 skrll object will contain position independent code, so all references
3012 1.1 skrll from the dynamic object to this symbol will go through the global
3013 1.1 skrll offset table. The dynamic linker will use the .dynsym entry to
3014 1.1 skrll determine the address it must put in the global offset table, so
3015 1.1 skrll both the dynamic object and the regular object will refer to the
3016 1.4 christos same memory location for the variable. */
3017 1.1 skrll
3018 1.1 skrll s = bfd_get_linker_section (dynobj, ".dynbss");
3019 1.1 skrll BFD_ASSERT (s != NULL);
3020 1.1 skrll
3021 1.1 skrll /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
3022 1.1 skrll copy the initial value out of the dynamic object and into the
3023 1.4 christos runtime process image. We need to remember the offset into the
3024 1.1 skrll .rela.bss section we are going to use. */
3025 1.1 skrll if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
3026 1.1 skrll {
3027 1.4 christos asection *srel;
3028 1.1 skrll
3029 1.1 skrll srel = bfd_get_linker_section (dynobj, ".rela.bss");
3030 1.1 skrll BFD_ASSERT (srel != NULL);
3031 1.1 skrll srel->size += sizeof (Elf32_External_Rela);
3032 1.1 skrll h->needs_copy = 1;
3033 1.6 christos }
3034 1.1 skrll
3035 1.1 skrll return _bfd_elf_adjust_dynamic_copy (info, h, s);
3036 1.1 skrll }
3037 1.1 skrll
3038 1.1 skrll /* Set the sizes of the dynamic sections. */
3039 1.4 christos
3040 1.4 christos static bfd_boolean
3041 1.1 skrll elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3042 1.1 skrll struct bfd_link_info *info)
3043 1.1 skrll {
3044 1.1 skrll bfd *dynobj;
3045 1.1 skrll asection *s;
3046 1.1 skrll bfd_boolean plt;
3047 1.1 skrll bfd_boolean relocs;
3048 1.1 skrll
3049 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
3050 1.1 skrll BFD_ASSERT (dynobj != NULL);
3051 1.1 skrll
3052 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
3053 1.6 christos {
3054 1.1 skrll /* Set the contents of the .interp section to the interpreter. */
3055 1.4 christos if (bfd_link_executable (info) && !info->nointerp)
3056 1.1 skrll {
3057 1.1 skrll s = bfd_get_linker_section (dynobj, ".interp");
3058 1.1 skrll BFD_ASSERT (s != NULL);
3059 1.1 skrll s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3060 1.1 skrll s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3061 1.1 skrll }
3062 1.1 skrll }
3063 1.1 skrll else
3064 1.1 skrll {
3065 1.1 skrll /* We may have created entries in the .rela.got section.
3066 1.1 skrll However, if we are not creating the dynamic sections, we will
3067 1.1 skrll not actually use these entries. Reset the size of .rela.got,
3068 1.10.12.1 pgoyette which will cause it to get stripped from the output file
3069 1.1 skrll below. */
3070 1.1 skrll s = elf_hash_table (info)->srelgot;
3071 1.1 skrll if (s != NULL)
3072 1.1 skrll s->size = 0;
3073 1.1 skrll }
3074 1.1 skrll
3075 1.1 skrll /* If this is a -Bsymbolic shared link, then we need to discard all
3076 1.1 skrll PC relative relocs against symbols defined in a regular object.
3077 1.1 skrll For the normal shared case we discard the PC relative relocs
3078 1.1 skrll against symbols that have become local due to visibility changes.
3079 1.6 christos We allocated space for them in the check_relocs routine, but we
3080 1.1 skrll will not fill them in in the relocate_section routine. */
3081 1.1 skrll if (bfd_link_pic (info))
3082 1.4 christos elf_link_hash_traverse (elf_hash_table (info),
3083 1.1 skrll elf_m68k_discard_copies,
3084 1.1 skrll info);
3085 1.1 skrll
3086 1.1 skrll /* The check_relocs and adjust_dynamic_symbol entry points have
3087 1.1 skrll determined the sizes of the various dynamic sections. Allocate
3088 1.1 skrll memory for them. */
3089 1.1 skrll plt = FALSE;
3090 1.1 skrll relocs = FALSE;
3091 1.1 skrll for (s = dynobj->sections; s != NULL; s = s->next)
3092 1.1 skrll {
3093 1.1 skrll const char *name;
3094 1.1 skrll
3095 1.1 skrll if ((s->flags & SEC_LINKER_CREATED) == 0)
3096 1.1 skrll continue;
3097 1.1 skrll
3098 1.1 skrll /* It's OK to base decisions on the section name, because none
3099 1.1 skrll of the dynobj section names depend upon the input files. */
3100 1.1 skrll name = bfd_get_section_name (dynobj, s);
3101 1.1 skrll
3102 1.1 skrll if (strcmp (name, ".plt") == 0)
3103 1.1 skrll {
3104 1.1 skrll /* Remember whether there is a PLT. */
3105 1.1 skrll plt = s->size != 0;
3106 1.1 skrll }
3107 1.1 skrll else if (CONST_STRNEQ (name, ".rela"))
3108 1.1 skrll {
3109 1.1 skrll if (s->size != 0)
3110 1.1 skrll {
3111 1.1 skrll relocs = TRUE;
3112 1.1 skrll
3113 1.1 skrll /* We use the reloc_count field as a counter if we need
3114 1.1 skrll to copy relocs into the output file. */
3115 1.1 skrll s->reloc_count = 0;
3116 1.1 skrll }
3117 1.1 skrll }
3118 1.1 skrll else if (! CONST_STRNEQ (name, ".got")
3119 1.1 skrll && strcmp (name, ".dynbss") != 0)
3120 1.1 skrll {
3121 1.1 skrll /* It's not one of our sections, so don't allocate space. */
3122 1.1 skrll continue;
3123 1.1 skrll }
3124 1.1 skrll
3125 1.1 skrll if (s->size == 0)
3126 1.1 skrll {
3127 1.1 skrll /* If we don't need this section, strip it from the
3128 1.1 skrll output file. This is mostly to handle .rela.bss and
3129 1.1 skrll .rela.plt. We must create both sections in
3130 1.1 skrll create_dynamic_sections, because they must be created
3131 1.1 skrll before the linker maps input sections to output
3132 1.1 skrll sections. The linker does that before
3133 1.1 skrll adjust_dynamic_symbol is called, and it is that
3134 1.1 skrll function which decides whether anything needs to go
3135 1.1 skrll into these sections. */
3136 1.1 skrll s->flags |= SEC_EXCLUDE;
3137 1.1 skrll continue;
3138 1.1 skrll }
3139 1.1 skrll
3140 1.1 skrll if ((s->flags & SEC_HAS_CONTENTS) == 0)
3141 1.1 skrll continue;
3142 1.1 skrll
3143 1.1 skrll /* Allocate memory for the section contents. */
3144 1.1 skrll /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
3145 1.1 skrll Unused entries should be reclaimed before the section's contents
3146 1.1 skrll are written out, but at the moment this does not happen. Thus in
3147 1.1 skrll order to prevent writing out garbage, we initialise the section's
3148 1.1 skrll contents to zero. */
3149 1.1 skrll s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3150 1.1 skrll if (s->contents == NULL)
3151 1.1 skrll return FALSE;
3152 1.1 skrll }
3153 1.1 skrll
3154 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
3155 1.1 skrll {
3156 1.1 skrll /* Add some entries to the .dynamic section. We fill in the
3157 1.1 skrll values later, in elf_m68k_finish_dynamic_sections, but we
3158 1.1 skrll must add the entries now so that we get the correct size for
3159 1.1 skrll the .dynamic section. The DT_DEBUG entry is filled in by the
3160 1.1 skrll dynamic linker and used by the debugger. */
3161 1.1 skrll #define add_dynamic_entry(TAG, VAL) \
3162 1.6 christos _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3163 1.1 skrll
3164 1.1 skrll if (bfd_link_executable (info))
3165 1.1 skrll {
3166 1.1 skrll if (!add_dynamic_entry (DT_DEBUG, 0))
3167 1.1 skrll return FALSE;
3168 1.1 skrll }
3169 1.1 skrll
3170 1.1 skrll if (plt)
3171 1.1 skrll {
3172 1.1 skrll if (!add_dynamic_entry (DT_PLTGOT, 0)
3173 1.1 skrll || !add_dynamic_entry (DT_PLTRELSZ, 0)
3174 1.1 skrll || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3175 1.1 skrll || !add_dynamic_entry (DT_JMPREL, 0))
3176 1.1 skrll return FALSE;
3177 1.1 skrll }
3178 1.1 skrll
3179 1.1 skrll if (relocs)
3180 1.1 skrll {
3181 1.1 skrll if (!add_dynamic_entry (DT_RELA, 0)
3182 1.1 skrll || !add_dynamic_entry (DT_RELASZ, 0)
3183 1.1 skrll || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3184 1.1 skrll return FALSE;
3185 1.1 skrll }
3186 1.1 skrll
3187 1.1 skrll if ((info->flags & DF_TEXTREL) != 0)
3188 1.1 skrll {
3189 1.1 skrll if (!add_dynamic_entry (DT_TEXTREL, 0))
3190 1.1 skrll return FALSE;
3191 1.1 skrll }
3192 1.1 skrll }
3193 1.1 skrll #undef add_dynamic_entry
3194 1.1 skrll
3195 1.1 skrll return TRUE;
3196 1.1 skrll }
3197 1.1 skrll
3198 1.1 skrll /* This function is called via elf_link_hash_traverse if we are
3199 1.1 skrll creating a shared object. In the -Bsymbolic case it discards the
3200 1.1 skrll space allocated to copy PC relative relocs against symbols which
3201 1.1 skrll are defined in regular objects. For the normal shared case, it
3202 1.1 skrll discards space for pc-relative relocs that have become local due to
3203 1.1 skrll symbol visibility changes. We allocated space for them in the
3204 1.1 skrll check_relocs routine, but we won't fill them in in the
3205 1.1 skrll relocate_section routine.
3206 1.1 skrll
3207 1.1 skrll We also check whether any of the remaining relocations apply
3208 1.1 skrll against a readonly section, and set the DF_TEXTREL flag in this
3209 1.1 skrll case. */
3210 1.4 christos
3211 1.4 christos static bfd_boolean
3212 1.1 skrll elf_m68k_discard_copies (struct elf_link_hash_entry *h,
3213 1.1 skrll void * inf)
3214 1.1 skrll {
3215 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) inf;
3216 1.3 christos struct elf_m68k_pcrel_relocs_copied *s;
3217 1.1 skrll
3218 1.1 skrll if (!SYMBOL_CALLS_LOCAL (info, h))
3219 1.1 skrll {
3220 1.1 skrll if ((info->flags & DF_TEXTREL) == 0)
3221 1.1 skrll {
3222 1.1 skrll /* Look for relocations against read-only sections. */
3223 1.1 skrll for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3224 1.1 skrll s != NULL;
3225 1.1 skrll s = s->next)
3226 1.7 christos if ((s->section->flags & SEC_READONLY) != 0)
3227 1.7 christos {
3228 1.8 christos if (info->warn_shared_textrel)
3229 1.9 mlelstv (*_bfd_error_handler)
3230 1.1 skrll (_("warning: dynamic relocation to `%s' in readonly section `%s'"),
3231 1.1 skrll h->root.root.string, s->section->name);
3232 1.1 skrll info->flags |= DF_TEXTREL;
3233 1.1 skrll break;
3234 1.1 skrll }
3235 1.4 christos }
3236 1.4 christos
3237 1.4 christos /* Make sure undefined weak symbols are output as a dynamic symbol
3238 1.4 christos in PIEs. */
3239 1.4 christos if (h->non_got_ref
3240 1.4 christos && h->root.type == bfd_link_hash_undefweak
3241 1.4 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3242 1.4 christos && h->dynindx == -1
3243 1.4 christos && !h->forced_local)
3244 1.4 christos {
3245 1.4 christos if (! bfd_elf_link_record_dynamic_symbol (info, h))
3246 1.4 christos return FALSE;
3247 1.1 skrll }
3248 1.1 skrll
3249 1.1 skrll return TRUE;
3250 1.1 skrll }
3251 1.1 skrll
3252 1.1 skrll for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied;
3253 1.1 skrll s != NULL;
3254 1.1 skrll s = s->next)
3255 1.1 skrll s->section->size -= s->count * sizeof (Elf32_External_Rela);
3256 1.1 skrll
3257 1.1 skrll return TRUE;
3258 1.3 christos }
3259 1.3 christos
3260 1.3 christos
3261 1.3 christos /* Install relocation RELA. */
3262 1.3 christos
3263 1.3 christos static void
3264 1.3 christos elf_m68k_install_rela (bfd *output_bfd,
3265 1.3 christos asection *srela,
3266 1.3 christos Elf_Internal_Rela *rela)
3267 1.3 christos {
3268 1.3 christos bfd_byte *loc;
3269 1.3 christos
3270 1.3 christos loc = srela->contents;
3271 1.3 christos loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
3272 1.3 christos bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
3273 1.3 christos }
3274 1.3 christos
3275 1.3 christos /* Find the base offsets for thread-local storage in this object,
3276 1.3 christos for GD/LD and IE/LE respectively. */
3277 1.3 christos
3278 1.3 christos #define DTP_OFFSET 0x8000
3279 1.3 christos #define TP_OFFSET 0x7000
3280 1.3 christos
3281 1.3 christos static bfd_vma
3282 1.3 christos dtpoff_base (struct bfd_link_info *info)
3283 1.3 christos {
3284 1.3 christos /* If tls_sec is NULL, we should have signalled an error already. */
3285 1.3 christos if (elf_hash_table (info)->tls_sec == NULL)
3286 1.3 christos return 0;
3287 1.3 christos return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET;
3288 1.3 christos }
3289 1.3 christos
3290 1.3 christos static bfd_vma
3291 1.3 christos tpoff_base (struct bfd_link_info *info)
3292 1.3 christos {
3293 1.3 christos /* If tls_sec is NULL, we should have signalled an error already. */
3294 1.3 christos if (elf_hash_table (info)->tls_sec == NULL)
3295 1.3 christos return 0;
3296 1.3 christos return elf_hash_table (info)->tls_sec->vma + TP_OFFSET;
3297 1.3 christos }
3298 1.3 christos
3299 1.3 christos /* Output necessary relocation to handle a symbol during static link.
3300 1.3 christos This function is called from elf_m68k_relocate_section. */
3301 1.3 christos
3302 1.3 christos static void
3303 1.3 christos elf_m68k_init_got_entry_static (struct bfd_link_info *info,
3304 1.3 christos bfd *output_bfd,
3305 1.3 christos enum elf_m68k_reloc_type r_type,
3306 1.3 christos asection *sgot,
3307 1.3 christos bfd_vma got_entry_offset,
3308 1.3 christos bfd_vma relocation)
3309 1.3 christos {
3310 1.3 christos switch (elf_m68k_reloc_got_type (r_type))
3311 1.3 christos {
3312 1.3 christos case R_68K_GOT32O:
3313 1.3 christos bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset);
3314 1.3 christos break;
3315 1.3 christos
3316 1.3 christos case R_68K_TLS_GD32:
3317 1.3 christos /* We know the offset within the module,
3318 1.3 christos put it into the second GOT slot. */
3319 1.3 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3320 1.3 christos sgot->contents + got_entry_offset + 4);
3321 1.3 christos /* FALLTHRU */
3322 1.3 christos
3323 1.3 christos case R_68K_TLS_LDM32:
3324 1.3 christos /* Mark it as belonging to module 1, the executable. */
3325 1.3 christos bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset);
3326 1.3 christos break;
3327 1.3 christos
3328 1.3 christos case R_68K_TLS_IE32:
3329 1.3 christos bfd_put_32 (output_bfd, relocation - tpoff_base (info),
3330 1.3 christos sgot->contents + got_entry_offset);
3331 1.3 christos break;
3332 1.3 christos
3333 1.3 christos default:
3334 1.3 christos BFD_ASSERT (FALSE);
3335 1.3 christos }
3336 1.3 christos }
3337 1.3 christos
3338 1.3 christos /* Output necessary relocation to handle a local symbol
3339 1.3 christos during dynamic link.
3340 1.3 christos This function is called either from elf_m68k_relocate_section
3341 1.3 christos or from elf_m68k_finish_dynamic_symbol. */
3342 1.3 christos
3343 1.3 christos static void
3344 1.3 christos elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info,
3345 1.3 christos bfd *output_bfd,
3346 1.3 christos enum elf_m68k_reloc_type r_type,
3347 1.3 christos asection *sgot,
3348 1.3 christos bfd_vma got_entry_offset,
3349 1.3 christos bfd_vma relocation,
3350 1.3 christos asection *srela)
3351 1.3 christos {
3352 1.3 christos Elf_Internal_Rela outrel;
3353 1.3 christos
3354 1.3 christos switch (elf_m68k_reloc_got_type (r_type))
3355 1.3 christos {
3356 1.3 christos case R_68K_GOT32O:
3357 1.3 christos /* Emit RELATIVE relocation to initialize GOT slot
3358 1.3 christos at run-time. */
3359 1.3 christos outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3360 1.3 christos outrel.r_addend = relocation;
3361 1.3 christos break;
3362 1.3 christos
3363 1.3 christos case R_68K_TLS_GD32:
3364 1.3 christos /* We know the offset within the module,
3365 1.3 christos put it into the second GOT slot. */
3366 1.3 christos bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3367 1.3 christos sgot->contents + got_entry_offset + 4);
3368 1.3 christos /* FALLTHRU */
3369 1.3 christos
3370 1.3 christos case R_68K_TLS_LDM32:
3371 1.3 christos /* We don't know the module number,
3372 1.3 christos create a relocation for it. */
3373 1.3 christos outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32);
3374 1.3 christos outrel.r_addend = 0;
3375 1.3 christos break;
3376 1.3 christos
3377 1.3 christos case R_68K_TLS_IE32:
3378 1.3 christos /* Emit TPREL relocation to initialize GOT slot
3379 1.3 christos at run-time. */
3380 1.3 christos outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32);
3381 1.3 christos outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma;
3382 1.3 christos break;
3383 1.3 christos
3384 1.3 christos default:
3385 1.3 christos BFD_ASSERT (FALSE);
3386 1.3 christos }
3387 1.3 christos
3388 1.3 christos /* Offset of the GOT entry. */
3389 1.3 christos outrel.r_offset = (sgot->output_section->vma
3390 1.3 christos + sgot->output_offset
3391 1.3 christos + got_entry_offset);
3392 1.3 christos
3393 1.3 christos /* Install one of the above relocations. */
3394 1.3 christos elf_m68k_install_rela (output_bfd, srela, &outrel);
3395 1.3 christos
3396 1.3 christos bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset);
3397 1.1 skrll }
3398 1.1 skrll
3399 1.1 skrll /* Relocate an M68K ELF section. */
3400 1.4 christos
3401 1.4 christos static bfd_boolean
3402 1.4 christos elf_m68k_relocate_section (bfd *output_bfd,
3403 1.4 christos struct bfd_link_info *info,
3404 1.4 christos bfd *input_bfd,
3405 1.4 christos asection *input_section,
3406 1.4 christos bfd_byte *contents,
3407 1.4 christos Elf_Internal_Rela *relocs,
3408 1.1 skrll Elf_Internal_Sym *local_syms,
3409 1.1 skrll asection **local_sections)
3410 1.1 skrll {
3411 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
3412 1.1 skrll struct elf_link_hash_entry **sym_hashes;
3413 1.1 skrll asection *sgot;
3414 1.3 christos asection *splt;
3415 1.1 skrll asection *sreloc;
3416 1.1 skrll asection *srela;
3417 1.1 skrll struct elf_m68k_got *got;
3418 1.1 skrll Elf_Internal_Rela *rel;
3419 1.1 skrll Elf_Internal_Rela *relend;
3420 1.1 skrll
3421 1.1 skrll symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3422 1.1 skrll sym_hashes = elf_sym_hashes (input_bfd);
3423 1.1 skrll
3424 1.1 skrll sgot = NULL;
3425 1.3 christos splt = NULL;
3426 1.1 skrll sreloc = NULL;
3427 1.1 skrll srela = NULL;
3428 1.1 skrll
3429 1.1 skrll got = NULL;
3430 1.1 skrll
3431 1.1 skrll rel = relocs;
3432 1.1 skrll relend = relocs + input_section->reloc_count;
3433 1.1 skrll for (; rel < relend; rel++)
3434 1.1 skrll {
3435 1.1 skrll int r_type;
3436 1.1 skrll reloc_howto_type *howto;
3437 1.1 skrll unsigned long r_symndx;
3438 1.1 skrll struct elf_link_hash_entry *h;
3439 1.1 skrll Elf_Internal_Sym *sym;
3440 1.1 skrll asection *sec;
3441 1.1 skrll bfd_vma relocation;
3442 1.10.12.1 pgoyette bfd_boolean unresolved_reloc;
3443 1.1 skrll bfd_reloc_status_type r;
3444 1.1 skrll bfd_boolean resolved_to_zero;
3445 1.1 skrll
3446 1.1 skrll r_type = ELF32_R_TYPE (rel->r_info);
3447 1.1 skrll if (r_type < 0 || r_type >= (int) R_68K_max)
3448 1.1 skrll {
3449 1.1 skrll bfd_set_error (bfd_error_bad_value);
3450 1.1 skrll return FALSE;
3451 1.1 skrll }
3452 1.1 skrll howto = howto_table + r_type;
3453 1.1 skrll
3454 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
3455 1.1 skrll
3456 1.1 skrll h = NULL;
3457 1.1 skrll sym = NULL;
3458 1.1 skrll sec = NULL;
3459 1.1 skrll unresolved_reloc = FALSE;
3460 1.1 skrll
3461 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
3462 1.1 skrll {
3463 1.1 skrll sym = local_syms + r_symndx;
3464 1.1 skrll sec = local_sections[r_symndx];
3465 1.1 skrll relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3466 1.1 skrll }
3467 1.6 christos else
3468 1.1 skrll {
3469 1.1 skrll bfd_boolean warned, ignored;
3470 1.1 skrll
3471 1.1 skrll RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3472 1.6 christos r_symndx, symtab_hdr, sym_hashes,
3473 1.1 skrll h, sec, relocation,
3474 1.1 skrll unresolved_reloc, warned, ignored);
3475 1.4 christos }
3476 1.3 christos
3477 1.4 christos if (sec != NULL && discarded_section (sec))
3478 1.1 skrll RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3479 1.6 christos rel, 1, relend, howto, 0, contents);
3480 1.1 skrll
3481 1.1 skrll if (bfd_link_relocatable (info))
3482 1.10.12.1 pgoyette continue;
3483 1.10.12.1 pgoyette
3484 1.10.12.1 pgoyette resolved_to_zero = (h != NULL
3485 1.1 skrll && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3486 1.1 skrll
3487 1.1 skrll switch (r_type)
3488 1.1 skrll {
3489 1.1 skrll case R_68K_GOT8:
3490 1.1 skrll case R_68K_GOT16:
3491 1.1 skrll case R_68K_GOT32:
3492 1.1 skrll /* Relocation is to the address of the entry for this symbol
3493 1.1 skrll in the global offset table. */
3494 1.1 skrll if (h != NULL
3495 1.1 skrll && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3496 1.1 skrll {
3497 1.1 skrll if (elf_m68k_hash_table (info)->local_gp_p)
3498 1.1 skrll {
3499 1.1 skrll bfd_vma sgot_output_offset;
3500 1.10.12.1 pgoyette bfd_vma got_offset;
3501 1.1 skrll
3502 1.10.12.1 pgoyette sgot = elf_hash_table (info)->sgot;
3503 1.1 skrll
3504 1.10.12.1 pgoyette if (sgot != NULL)
3505 1.10.12.1 pgoyette sgot_output_offset = sgot->output_offset;
3506 1.10.12.1 pgoyette else
3507 1.10.12.1 pgoyette /* In this case we have a reference to
3508 1.10.12.1 pgoyette _GLOBAL_OFFSET_TABLE_, but the GOT itself is
3509 1.10.12.1 pgoyette empty.
3510 1.1 skrll ??? Issue a warning? */
3511 1.1 skrll sgot_output_offset = 0;
3512 1.1 skrll
3513 1.1 skrll if (got == NULL)
3514 1.1 skrll {
3515 1.1 skrll struct elf_m68k_bfd2got_entry *bfd2got_entry;
3516 1.1 skrll
3517 1.1 skrll bfd2got_entry
3518 1.1 skrll = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3519 1.1 skrll input_bfd, SEARCH, NULL);
3520 1.1 skrll
3521 1.1 skrll if (bfd2got_entry != NULL)
3522 1.1 skrll {
3523 1.1 skrll got = bfd2got_entry->got;
3524 1.1 skrll BFD_ASSERT (got != NULL);
3525 1.1 skrll
3526 1.1 skrll got_offset = got->offset;
3527 1.1 skrll }
3528 1.1 skrll else
3529 1.1 skrll /* In this case we have a reference to
3530 1.1 skrll _GLOBAL_OFFSET_TABLE_, but no other references
3531 1.1 skrll accessing any GOT entries.
3532 1.1 skrll ??? Issue a warning? */
3533 1.1 skrll got_offset = 0;
3534 1.1 skrll }
3535 1.1 skrll else
3536 1.1 skrll got_offset = got->offset;
3537 1.1 skrll
3538 1.1 skrll /* Adjust GOT pointer to point to the GOT
3539 1.1 skrll assigned to input_bfd. */
3540 1.1 skrll rel->r_addend += sgot_output_offset + got_offset;
3541 1.1 skrll }
3542 1.1 skrll else
3543 1.1 skrll BFD_ASSERT (got == NULL || got->offset == 0);
3544 1.1 skrll
3545 1.1 skrll break;
3546 1.1 skrll }
3547 1.1 skrll /* Fall through. */
3548 1.1 skrll case R_68K_GOT8O:
3549 1.3 christos case R_68K_GOT16O:
3550 1.3 christos case R_68K_GOT32O:
3551 1.3 christos
3552 1.3 christos case R_68K_TLS_LDM32:
3553 1.3 christos case R_68K_TLS_LDM16:
3554 1.3 christos case R_68K_TLS_LDM8:
3555 1.3 christos
3556 1.3 christos case R_68K_TLS_GD8:
3557 1.3 christos case R_68K_TLS_GD16:
3558 1.3 christos case R_68K_TLS_GD32:
3559 1.3 christos
3560 1.3 christos case R_68K_TLS_IE8:
3561 1.3 christos case R_68K_TLS_IE16:
3562 1.1 skrll case R_68K_TLS_IE32:
3563 1.1 skrll
3564 1.1 skrll /* Relocation is the offset of the entry for this symbol in
3565 1.1 skrll the global offset table. */
3566 1.1 skrll
3567 1.1 skrll {
3568 1.1 skrll struct elf_m68k_got_entry_key key_;
3569 1.1 skrll bfd_vma *off_ptr;
3570 1.10.12.1 pgoyette bfd_vma off;
3571 1.10.12.1 pgoyette
3572 1.1 skrll sgot = elf_hash_table (info)->sgot;
3573 1.1 skrll BFD_ASSERT (sgot != NULL);
3574 1.1 skrll
3575 1.1 skrll if (got == NULL)
3576 1.1 skrll {
3577 1.1 skrll got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info),
3578 1.1 skrll input_bfd, MUST_FIND,
3579 1.1 skrll NULL)->got;
3580 1.1 skrll BFD_ASSERT (got != NULL);
3581 1.1 skrll }
3582 1.3 christos
3583 1.3 christos /* Get GOT offset for this symbol. */
3584 1.1 skrll elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx,
3585 1.1 skrll r_type);
3586 1.1 skrll off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND,
3587 1.1 skrll NULL)->u.s2.offset;
3588 1.3 christos off = *off_ptr;
3589 1.3 christos
3590 1.3 christos /* The offset must always be a multiple of 4. We use
3591 1.3 christos the least significant bit to record whether we have
3592 1.3 christos already generated the necessary reloc. */
3593 1.3 christos if ((off & 1) != 0)
3594 1.1 skrll off &= ~1;
3595 1.3 christos else
3596 1.3 christos {
3597 1.3 christos if (h != NULL
3598 1.3 christos /* @TLSLDM relocations are bounded to the module, in
3599 1.3 christos which the symbol is defined -- not to the symbol
3600 1.3 christos itself. */
3601 1.3 christos && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32)
3602 1.1 skrll {
3603 1.3 christos bfd_boolean dyn;
3604 1.6 christos
3605 1.6 christos dyn = elf_hash_table (info)->dynamic_sections_created;
3606 1.6 christos if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3607 1.6 christos bfd_link_pic (info),
3608 1.3 christos h)
3609 1.10.12.1 pgoyette || (bfd_link_pic (info)
3610 1.10.12.1 pgoyette && SYMBOL_REFERENCES_LOCAL (info, h))
3611 1.3 christos || ((ELF_ST_VISIBILITY (h->other)
3612 1.1 skrll || resolved_to_zero)
3613 1.3 christos && h->root.type == bfd_link_hash_undefweak))
3614 1.3 christos {
3615 1.3 christos /* This is actually a static link, or it is a
3616 1.3 christos -Bsymbolic link and the symbol is defined
3617 1.3 christos locally, or the symbol was forced to be local
3618 1.3 christos because of a version file. We must initialize
3619 1.3 christos this entry in the global offset table. Since
3620 1.3 christos the offset must always be a multiple of 4, we
3621 1.3 christos use the least significant bit to record whether
3622 1.3 christos we have initialized it already.
3623 1.3 christos
3624 1.3 christos When doing a dynamic link, we create a .rela.got
3625 1.3 christos relocation entry to initialize the value. This
3626 1.3 christos is done in the finish_dynamic_symbol routine. */
3627 1.3 christos
3628 1.3 christos elf_m68k_init_got_entry_static (info,
3629 1.3 christos output_bfd,
3630 1.3 christos r_type,
3631 1.3 christos sgot,
3632 1.3 christos off,
3633 1.1 skrll relocation);
3634 1.1 skrll
3635 1.3 christos *off_ptr |= 1;
3636 1.3 christos }
3637 1.1 skrll else
3638 1.6 christos unresolved_reloc = FALSE;
3639 1.3 christos }
3640 1.1 skrll else if (bfd_link_pic (info)) /* && h == NULL */
3641 1.10.12.1 pgoyette /* Process local symbol during dynamic link. */
3642 1.10.12.1 pgoyette {
3643 1.1 skrll srela = elf_hash_table (info)->srelgot;
3644 1.3 christos BFD_ASSERT (srela != NULL);
3645 1.3 christos
3646 1.3 christos elf_m68k_init_got_entry_local_shared (info,
3647 1.3 christos output_bfd,
3648 1.3 christos r_type,
3649 1.3 christos sgot,
3650 1.3 christos off,
3651 1.3 christos relocation,
3652 1.3 christos srela);
3653 1.3 christos
3654 1.6 christos *off_ptr |= 1;
3655 1.3 christos }
3656 1.3 christos else /* h == NULL && !bfd_link_pic (info) */
3657 1.3 christos {
3658 1.3 christos elf_m68k_init_got_entry_static (info,
3659 1.3 christos output_bfd,
3660 1.3 christos r_type,
3661 1.3 christos sgot,
3662 1.3 christos off,
3663 1.1 skrll relocation);
3664 1.1 skrll
3665 1.1 skrll *off_ptr |= 1;
3666 1.1 skrll }
3667 1.3 christos }
3668 1.3 christos
3669 1.3 christos /* We don't use elf_m68k_reloc_got_type in the condition below
3670 1.3 christos because this is the only place where difference between
3671 1.1 skrll R_68K_GOTx and R_68K_GOTxO relocations matters. */
3672 1.3 christos if (r_type == R_68K_GOT32O
3673 1.3 christos || r_type == R_68K_GOT16O
3674 1.3 christos || r_type == R_68K_GOT8O
3675 1.3 christos || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32
3676 1.1 skrll || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32
3677 1.1 skrll || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32)
3678 1.1 skrll {
3679 1.1 skrll /* GOT pointer is adjusted to point to the start/middle
3680 1.1 skrll of local GOT. Adjust the offset accordingly. */
3681 1.1 skrll BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p
3682 1.1 skrll || off >= got->offset);
3683 1.1 skrll
3684 1.1 skrll if (elf_m68k_hash_table (info)->local_gp_p)
3685 1.1 skrll relocation = off - got->offset;
3686 1.1 skrll else
3687 1.1 skrll {
3688 1.1 skrll BFD_ASSERT (got->offset == 0);
3689 1.1 skrll relocation = sgot->output_offset + off;
3690 1.1 skrll }
3691 1.1 skrll
3692 1.1 skrll /* This relocation does not use the addend. */
3693 1.1 skrll rel->r_addend = 0;
3694 1.1 skrll }
3695 1.1 skrll else
3696 1.1 skrll relocation = (sgot->output_section->vma + sgot->output_offset
3697 1.1 skrll + off);
3698 1.1 skrll }
3699 1.3 christos break;
3700 1.3 christos
3701 1.3 christos case R_68K_TLS_LDO32:
3702 1.3 christos case R_68K_TLS_LDO16:
3703 1.3 christos case R_68K_TLS_LDO8:
3704 1.3 christos relocation -= dtpoff_base (info);
3705 1.3 christos break;
3706 1.3 christos
3707 1.3 christos case R_68K_TLS_LE32:
3708 1.6 christos case R_68K_TLS_LE16:
3709 1.3 christos case R_68K_TLS_LE8:
3710 1.10.12.1 pgoyette if (bfd_link_dll (info))
3711 1.10.12.1 pgoyette {
3712 1.10.12.1 pgoyette _bfd_error_handler
3713 1.10.12.1 pgoyette /* xgettext:c-format */
3714 1.3 christos (_("%B(%A+%#Lx): %s relocation not permitted in shared object"),
3715 1.3 christos input_bfd, input_section, rel->r_offset, howto->name);
3716 1.3 christos
3717 1.3 christos return FALSE;
3718 1.3 christos }
3719 1.3 christos else
3720 1.3 christos relocation -= tpoff_base (info);
3721 1.3 christos
3722 1.1 skrll break;
3723 1.1 skrll
3724 1.1 skrll case R_68K_PLT8:
3725 1.1 skrll case R_68K_PLT16:
3726 1.1 skrll case R_68K_PLT32:
3727 1.1 skrll /* Relocation is to the entry for this symbol in the
3728 1.1 skrll procedure linkage table. */
3729 1.1 skrll
3730 1.1 skrll /* Resolve a PLTxx reloc against a local symbol directly,
3731 1.1 skrll without using the procedure linkage table. */
3732 1.1 skrll if (h == NULL)
3733 1.1 skrll break;
3734 1.1 skrll
3735 1.1 skrll if (h->plt.offset == (bfd_vma) -1
3736 1.1 skrll || !elf_hash_table (info)->dynamic_sections_created)
3737 1.1 skrll {
3738 1.1 skrll /* We didn't make a PLT entry for this symbol. This
3739 1.1 skrll happens when statically linking PIC code, or when
3740 1.1 skrll using -Bsymbolic. */
3741 1.1 skrll break;
3742 1.10.12.1 pgoyette }
3743 1.10.12.1 pgoyette
3744 1.1 skrll splt = elf_hash_table (info)->splt;
3745 1.1 skrll BFD_ASSERT (splt != NULL);
3746 1.1 skrll
3747 1.1 skrll relocation = (splt->output_section->vma
3748 1.1 skrll + splt->output_offset
3749 1.1 skrll + h->plt.offset);
3750 1.1 skrll unresolved_reloc = FALSE;
3751 1.1 skrll break;
3752 1.1 skrll
3753 1.1 skrll case R_68K_PLT8O:
3754 1.1 skrll case R_68K_PLT16O:
3755 1.1 skrll case R_68K_PLT32O:
3756 1.1 skrll /* Relocation is the offset of the entry for this symbol in
3757 1.1 skrll the procedure linkage table. */
3758 1.10.12.1 pgoyette BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1);
3759 1.10.12.1 pgoyette
3760 1.1 skrll splt = elf_hash_table (info)->splt;
3761 1.1 skrll BFD_ASSERT (splt != NULL);
3762 1.1 skrll
3763 1.1 skrll relocation = h->plt.offset;
3764 1.1 skrll unresolved_reloc = FALSE;
3765 1.1 skrll
3766 1.1 skrll /* This relocation does not use the addend. */
3767 1.1 skrll rel->r_addend = 0;
3768 1.1 skrll
3769 1.3 christos break;
3770 1.3 christos
3771 1.3 christos case R_68K_8:
3772 1.1 skrll case R_68K_16:
3773 1.1 skrll case R_68K_32:
3774 1.1 skrll case R_68K_PC8:
3775 1.6 christos case R_68K_PC16:
3776 1.3 christos case R_68K_PC32:
3777 1.1 skrll if (bfd_link_pic (info)
3778 1.1 skrll && r_symndx != STN_UNDEF
3779 1.10.12.1 pgoyette && (input_section->flags & SEC_ALLOC) != 0
3780 1.10.12.1 pgoyette && (h == NULL
3781 1.1 skrll || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3782 1.1 skrll && !resolved_to_zero)
3783 1.1 skrll || h->root.type != bfd_link_hash_undefweak)
3784 1.1 skrll && ((r_type != R_68K_PC8
3785 1.3 christos && r_type != R_68K_PC16
3786 1.1 skrll && r_type != R_68K_PC32)
3787 1.1 skrll || !SYMBOL_CALLS_LOCAL (info, h)))
3788 1.1 skrll {
3789 1.1 skrll Elf_Internal_Rela outrel;
3790 1.1 skrll bfd_byte *loc;
3791 1.1 skrll bfd_boolean skip, relocate;
3792 1.1 skrll
3793 1.1 skrll /* When generating a shared object, these relocations
3794 1.1 skrll are copied into the output file to be resolved at run
3795 1.1 skrll time. */
3796 1.1 skrll
3797 1.1 skrll skip = FALSE;
3798 1.1 skrll relocate = FALSE;
3799 1.1 skrll
3800 1.1 skrll outrel.r_offset =
3801 1.1 skrll _bfd_elf_section_offset (output_bfd, info, input_section,
3802 1.1 skrll rel->r_offset);
3803 1.1 skrll if (outrel.r_offset == (bfd_vma) -1)
3804 1.1 skrll skip = TRUE;
3805 1.1 skrll else if (outrel.r_offset == (bfd_vma) -2)
3806 1.1 skrll skip = TRUE, relocate = TRUE;
3807 1.1 skrll outrel.r_offset += (input_section->output_section->vma
3808 1.1 skrll + input_section->output_offset);
3809 1.1 skrll
3810 1.1 skrll if (skip)
3811 1.1 skrll memset (&outrel, 0, sizeof outrel);
3812 1.1 skrll else if (h != NULL
3813 1.1 skrll && h->dynindx != -1
3814 1.1 skrll && (r_type == R_68K_PC8
3815 1.6 christos || r_type == R_68K_PC16
3816 1.6 christos || r_type == R_68K_PC32
3817 1.1 skrll || !bfd_link_pic (info)
3818 1.1 skrll || !SYMBOLIC_BIND (info, h)
3819 1.1 skrll || !h->def_regular))
3820 1.1 skrll {
3821 1.1 skrll outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3822 1.1 skrll outrel.r_addend = rel->r_addend;
3823 1.1 skrll }
3824 1.1 skrll else
3825 1.1 skrll {
3826 1.1 skrll /* This symbol is local, or marked to become local. */
3827 1.1 skrll outrel.r_addend = relocation + rel->r_addend;
3828 1.1 skrll
3829 1.1 skrll if (r_type == R_68K_32)
3830 1.1 skrll {
3831 1.1 skrll relocate = TRUE;
3832 1.1 skrll outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
3833 1.1 skrll }
3834 1.1 skrll else
3835 1.1 skrll {
3836 1.1 skrll long indx;
3837 1.1 skrll
3838 1.1 skrll if (bfd_is_abs_section (sec))
3839 1.1 skrll indx = 0;
3840 1.1 skrll else if (sec == NULL || sec->owner == NULL)
3841 1.1 skrll {
3842 1.1 skrll bfd_set_error (bfd_error_bad_value);
3843 1.1 skrll return FALSE;
3844 1.1 skrll }
3845 1.1 skrll else
3846 1.1 skrll {
3847 1.1 skrll asection *osec;
3848 1.1 skrll
3849 1.1 skrll /* We are turning this relocation into one
3850 1.1 skrll against a section symbol. It would be
3851 1.1 skrll proper to subtract the symbol's value,
3852 1.1 skrll osec->vma, from the emitted reloc addend,
3853 1.1 skrll but ld.so expects buggy relocs. */
3854 1.1 skrll osec = sec->output_section;
3855 1.1 skrll indx = elf_section_data (osec)->dynindx;
3856 1.1 skrll if (indx == 0)
3857 1.1 skrll {
3858 1.1 skrll struct elf_link_hash_table *htab;
3859 1.1 skrll htab = elf_hash_table (info);
3860 1.1 skrll osec = htab->text_index_section;
3861 1.1 skrll indx = elf_section_data (osec)->dynindx;
3862 1.1 skrll }
3863 1.1 skrll BFD_ASSERT (indx != 0);
3864 1.1 skrll }
3865 1.1 skrll
3866 1.1 skrll outrel.r_info = ELF32_R_INFO (indx, r_type);
3867 1.1 skrll }
3868 1.1 skrll }
3869 1.1 skrll
3870 1.1 skrll sreloc = elf_section_data (input_section)->sreloc;
3871 1.1 skrll if (sreloc == NULL)
3872 1.1 skrll abort ();
3873 1.1 skrll
3874 1.1 skrll loc = sreloc->contents;
3875 1.1 skrll loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3876 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3877 1.10.12.1 pgoyette
3878 1.10.12.1 pgoyette /* This reloc will be computed at runtime, so there's no
3879 1.10.12.1 pgoyette need to do anything now, except for R_68K_32
3880 1.1 skrll relocations that have been turned into
3881 1.1 skrll R_68K_RELATIVE. */
3882 1.1 skrll if (!relocate)
3883 1.1 skrll continue;
3884 1.1 skrll }
3885 1.1 skrll
3886 1.1 skrll break;
3887 1.1 skrll
3888 1.1 skrll case R_68K_GNU_VTINHERIT:
3889 1.1 skrll case R_68K_GNU_VTENTRY:
3890 1.1 skrll /* These are no-ops in the end. */
3891 1.1 skrll continue;
3892 1.1 skrll
3893 1.1 skrll default:
3894 1.1 skrll break;
3895 1.1 skrll }
3896 1.1 skrll
3897 1.1 skrll /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3898 1.1 skrll because such sections are not SEC_ALLOC and thus ld.so will
3899 1.1 skrll not process them. */
3900 1.4 christos if (unresolved_reloc
3901 1.4 christos && !((input_section->flags & SEC_DEBUGGING) != 0
3902 1.4 christos && h->def_dynamic)
3903 1.1 skrll && _bfd_elf_section_offset (output_bfd, info, input_section,
3904 1.10.12.1 pgoyette rel->r_offset) != (bfd_vma) -1)
3905 1.10.12.1 pgoyette {
3906 1.10.12.1 pgoyette _bfd_error_handler
3907 1.1 skrll /* xgettext:c-format */
3908 1.1 skrll (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3909 1.10.12.1 pgoyette input_bfd,
3910 1.1 skrll input_section,
3911 1.1 skrll rel->r_offset,
3912 1.1 skrll howto->name,
3913 1.1 skrll h->root.root.string);
3914 1.1 skrll return FALSE;
3915 1.3 christos }
3916 1.3 christos
3917 1.3 christos if (r_symndx != STN_UNDEF
3918 1.3 christos && r_type != R_68K_NONE
3919 1.3 christos && (h == NULL
3920 1.3 christos || h->root.type == bfd_link_hash_defined
3921 1.3 christos || h->root.type == bfd_link_hash_defweak))
3922 1.3 christos {
3923 1.3 christos char sym_type;
3924 1.3 christos
3925 1.3 christos sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type;
3926 1.3 christos
3927 1.3 christos if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS))
3928 1.3 christos {
3929 1.3 christos const char *name;
3930 1.3 christos
3931 1.3 christos if (h != NULL)
3932 1.3 christos name = h->root.root.string;
3933 1.3 christos else
3934 1.3 christos {
3935 1.3 christos name = (bfd_elf_string_from_elf_section
3936 1.3 christos (input_bfd, symtab_hdr->sh_link, sym->st_name));
3937 1.3 christos if (name == NULL || *name == '\0')
3938 1.3 christos name = bfd_section_name (input_bfd, sec);
3939 1.10.12.1 pgoyette }
3940 1.3 christos
3941 1.10.12.1 pgoyette _bfd_error_handler
3942 1.10.12.1 pgoyette ((sym_type == STT_TLS
3943 1.10.12.1 pgoyette /* xgettext:c-format */
3944 1.10.12.1 pgoyette ? _("%B(%A+%#Lx): %s used with TLS symbol %s")
3945 1.3 christos /* xgettext:c-format */
3946 1.3 christos : _("%B(%A+%#Lx): %s used with non-TLS symbol %s")),
3947 1.10.12.1 pgoyette input_bfd,
3948 1.3 christos input_section,
3949 1.3 christos rel->r_offset,
3950 1.3 christos howto->name,
3951 1.3 christos name);
3952 1.3 christos }
3953 1.1 skrll }
3954 1.1 skrll
3955 1.1 skrll r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3956 1.1 skrll contents, rel->r_offset,
3957 1.1 skrll relocation, rel->r_addend);
3958 1.1 skrll
3959 1.1 skrll if (r != bfd_reloc_ok)
3960 1.1 skrll {
3961 1.1 skrll const char *name;
3962 1.1 skrll
3963 1.1 skrll if (h != NULL)
3964 1.1 skrll name = h->root.root.string;
3965 1.1 skrll else
3966 1.1 skrll {
3967 1.1 skrll name = bfd_elf_string_from_elf_section (input_bfd,
3968 1.1 skrll symtab_hdr->sh_link,
3969 1.1 skrll sym->st_name);
3970 1.1 skrll if (name == NULL)
3971 1.1 skrll return FALSE;
3972 1.1 skrll if (*name == '\0')
3973 1.1 skrll name = bfd_section_name (input_bfd, sec);
3974 1.1 skrll }
3975 1.10 christos
3976 1.10 christos if (r == bfd_reloc_overflow)
3977 1.10 christos (*info->callbacks->reloc_overflow)
3978 1.1 skrll (info, (h ? &h->root : NULL), name, howto->name,
3979 1.1 skrll (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3980 1.10.12.1 pgoyette else
3981 1.10.12.1 pgoyette {
3982 1.10.12.1 pgoyette _bfd_error_handler
3983 1.1 skrll /* xgettext:c-format */
3984 1.10.12.1 pgoyette (_("%B(%A+%#Lx): reloc against `%s': error %d"),
3985 1.1 skrll input_bfd, input_section,
3986 1.1 skrll rel->r_offset, name, (int) r);
3987 1.1 skrll return FALSE;
3988 1.1 skrll }
3989 1.1 skrll }
3990 1.1 skrll }
3991 1.1 skrll
3992 1.1 skrll return TRUE;
3993 1.1 skrll }
3994 1.1 skrll
3995 1.1 skrll /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET
3996 1.1 skrll into section SEC. */
3997 1.1 skrll
3998 1.1 skrll static void
3999 1.1 skrll elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value)
4000 1.1 skrll {
4001 1.1 skrll /* Make VALUE PC-relative. */
4002 1.1 skrll value -= sec->output_section->vma + offset;
4003 1.1 skrll
4004 1.1 skrll /* Apply any in-place addend. */
4005 1.1 skrll value += bfd_get_32 (sec->owner, sec->contents + offset);
4006 1.1 skrll
4007 1.1 skrll bfd_put_32 (sec->owner, value, sec->contents + offset);
4008 1.1 skrll }
4009 1.1 skrll
4010 1.1 skrll /* Finish up dynamic symbol handling. We set the contents of various
4011 1.1 skrll dynamic sections here. */
4012 1.4 christos
4013 1.4 christos static bfd_boolean
4014 1.4 christos elf_m68k_finish_dynamic_symbol (bfd *output_bfd,
4015 1.4 christos struct bfd_link_info *info,
4016 1.1 skrll struct elf_link_hash_entry *h,
4017 1.1 skrll Elf_Internal_Sym *sym)
4018 1.1 skrll {
4019 1.1 skrll bfd *dynobj;
4020 1.1 skrll
4021 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
4022 1.1 skrll
4023 1.1 skrll if (h->plt.offset != (bfd_vma) -1)
4024 1.1 skrll {
4025 1.1 skrll const struct elf_m68k_plt_info *plt_info;
4026 1.1 skrll asection *splt;
4027 1.1 skrll asection *sgot;
4028 1.1 skrll asection *srela;
4029 1.1 skrll bfd_vma plt_index;
4030 1.1 skrll bfd_vma got_offset;
4031 1.1 skrll Elf_Internal_Rela rela;
4032 1.1 skrll bfd_byte *loc;
4033 1.1 skrll
4034 1.1 skrll /* This symbol has an entry in the procedure linkage table. Set
4035 1.1 skrll it up. */
4036 1.1 skrll
4037 1.1 skrll BFD_ASSERT (h->dynindx != -1);
4038 1.10.12.1 pgoyette
4039 1.10.12.1 pgoyette plt_info = elf_m68k_hash_table (info)->plt_info;
4040 1.10.12.1 pgoyette splt = elf_hash_table (info)->splt;
4041 1.1 skrll sgot = elf_hash_table (info)->sgotplt;
4042 1.1 skrll srela = elf_hash_table (info)->srelplt;
4043 1.1 skrll BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
4044 1.1 skrll
4045 1.1 skrll /* Get the index in the procedure linkage table which
4046 1.1 skrll corresponds to this symbol. This is the index of this symbol
4047 1.1 skrll in all the symbols for which we are making plt entries. The
4048 1.1 skrll first entry in the procedure linkage table is reserved. */
4049 1.1 skrll plt_index = (h->plt.offset / plt_info->size) - 1;
4050 1.1 skrll
4051 1.1 skrll /* Get the offset into the .got table of the entry that
4052 1.1 skrll corresponds to this function. Each .got entry is 4 bytes.
4053 1.1 skrll The first three are reserved. */
4054 1.1 skrll got_offset = (plt_index + 3) * 4;
4055 1.1 skrll
4056 1.1 skrll memcpy (splt->contents + h->plt.offset,
4057 1.1 skrll plt_info->symbol_entry,
4058 1.1 skrll plt_info->size);
4059 1.1 skrll
4060 1.1 skrll elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got,
4061 1.1 skrll (sgot->output_section->vma
4062 1.1 skrll + sgot->output_offset
4063 1.1 skrll + got_offset));
4064 1.1 skrll
4065 1.1 skrll bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4066 1.1 skrll splt->contents
4067 1.1 skrll + h->plt.offset
4068 1.1 skrll + plt_info->symbol_resolve_entry + 2);
4069 1.1 skrll
4070 1.1 skrll elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt,
4071 1.1 skrll splt->output_section->vma);
4072 1.1 skrll
4073 1.1 skrll /* Fill in the entry in the global offset table. */
4074 1.1 skrll bfd_put_32 (output_bfd,
4075 1.1 skrll (splt->output_section->vma
4076 1.1 skrll + splt->output_offset
4077 1.1 skrll + h->plt.offset
4078 1.1 skrll + plt_info->symbol_resolve_entry),
4079 1.1 skrll sgot->contents + got_offset);
4080 1.1 skrll
4081 1.1 skrll /* Fill in the entry in the .rela.plt section. */
4082 1.1 skrll rela.r_offset = (sgot->output_section->vma
4083 1.1 skrll + sgot->output_offset
4084 1.1 skrll + got_offset);
4085 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
4086 1.1 skrll rela.r_addend = 0;
4087 1.1 skrll loc = srela->contents + plt_index * sizeof (Elf32_External_Rela);
4088 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4089 1.1 skrll
4090 1.1 skrll if (!h->def_regular)
4091 1.1 skrll {
4092 1.1 skrll /* Mark the symbol as undefined, rather than as defined in
4093 1.1 skrll the .plt section. Leave the value alone. */
4094 1.1 skrll sym->st_shndx = SHN_UNDEF;
4095 1.1 skrll }
4096 1.1 skrll }
4097 1.1 skrll
4098 1.1 skrll if (elf_m68k_hash_entry (h)->glist != NULL)
4099 1.1 skrll {
4100 1.1 skrll asection *sgot;
4101 1.1 skrll asection *srela;
4102 1.1 skrll struct elf_m68k_got_entry *got_entry;
4103 1.1 skrll
4104 1.1 skrll /* This symbol has an entry in the global offset table. Set it
4105 1.10.12.1 pgoyette up. */
4106 1.10.12.1 pgoyette
4107 1.1 skrll sgot = elf_hash_table (info)->sgot;
4108 1.1 skrll srela = elf_hash_table (info)->srelgot;
4109 1.1 skrll BFD_ASSERT (sgot != NULL && srela != NULL);
4110 1.1 skrll
4111 1.1 skrll got_entry = elf_m68k_hash_entry (h)->glist;
4112 1.1 skrll
4113 1.3 christos while (got_entry != NULL)
4114 1.3 christos {
4115 1.1 skrll enum elf_m68k_reloc_type r_type;
4116 1.3 christos bfd_vma got_entry_offset;
4117 1.3 christos
4118 1.1 skrll r_type = got_entry->key_.type;
4119 1.1 skrll got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1;
4120 1.1 skrll
4121 1.1 skrll /* If this is a -Bsymbolic link, and the symbol is defined
4122 1.3 christos locally, we just want to emit a RELATIVE reloc. Likewise if
4123 1.1 skrll the symbol was forced to be local because of a version file.
4124 1.6 christos The entry in the global offset table already have been
4125 1.3 christos initialized in the relocate_section function. */
4126 1.1 skrll if (bfd_link_pic (info)
4127 1.3 christos && SYMBOL_REFERENCES_LOCAL (info, h))
4128 1.3 christos {
4129 1.3 christos bfd_vma relocation;
4130 1.3 christos
4131 1.3 christos relocation = bfd_get_signed_32 (output_bfd,
4132 1.3 christos (sgot->contents
4133 1.3 christos + got_entry_offset));
4134 1.3 christos
4135 1.3 christos /* Undo TP bias. */
4136 1.3 christos switch (elf_m68k_reloc_got_type (r_type))
4137 1.3 christos {
4138 1.3 christos case R_68K_GOT32O:
4139 1.3 christos case R_68K_TLS_LDM32:
4140 1.3 christos break;
4141 1.4 christos
4142 1.4 christos case R_68K_TLS_GD32:
4143 1.4 christos /* The value for this relocation is actually put in
4144 1.4 christos the second GOT slot. */
4145 1.4 christos relocation = bfd_get_signed_32 (output_bfd,
4146 1.3 christos (sgot->contents
4147 1.3 christos + got_entry_offset + 4));
4148 1.3 christos relocation += dtpoff_base (info);
4149 1.3 christos break;
4150 1.3 christos
4151 1.3 christos case R_68K_TLS_IE32:
4152 1.3 christos relocation += tpoff_base (info);
4153 1.3 christos break;
4154 1.3 christos
4155 1.3 christos default:
4156 1.3 christos BFD_ASSERT (FALSE);
4157 1.3 christos }
4158 1.3 christos
4159 1.3 christos elf_m68k_init_got_entry_local_shared (info,
4160 1.3 christos output_bfd,
4161 1.3 christos r_type,
4162 1.3 christos sgot,
4163 1.3 christos got_entry_offset,
4164 1.1 skrll relocation,
4165 1.1 skrll srela);
4166 1.1 skrll }
4167 1.3 christos else
4168 1.3 christos {
4169 1.3 christos Elf_Internal_Rela rela;
4170 1.3 christos
4171 1.3 christos /* Put zeros to GOT slots that will be initialized
4172 1.3 christos at run-time. */
4173 1.3 christos {
4174 1.3 christos bfd_vma n_slots;
4175 1.3 christos
4176 1.3 christos n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type);
4177 1.3 christos while (n_slots--)
4178 1.3 christos bfd_put_32 (output_bfd, (bfd_vma) 0,
4179 1.3 christos (sgot->contents + got_entry_offset
4180 1.3 christos + 4 * n_slots));
4181 1.1 skrll }
4182 1.3 christos
4183 1.3 christos rela.r_addend = 0;
4184 1.3 christos rela.r_offset = (sgot->output_section->vma
4185 1.3 christos + sgot->output_offset
4186 1.3 christos + got_entry_offset);
4187 1.3 christos
4188 1.3 christos switch (elf_m68k_reloc_got_type (r_type))
4189 1.3 christos {
4190 1.3 christos case R_68K_GOT32O:
4191 1.3 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
4192 1.3 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4193 1.3 christos break;
4194 1.3 christos
4195 1.3 christos case R_68K_TLS_GD32:
4196 1.3 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32);
4197 1.3 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4198 1.3 christos
4199 1.3 christos rela.r_offset += 4;
4200 1.3 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32);
4201 1.3 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4202 1.3 christos break;
4203 1.3 christos
4204 1.3 christos case R_68K_TLS_IE32:
4205 1.3 christos rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32);
4206 1.3 christos elf_m68k_install_rela (output_bfd, srela, &rela);
4207 1.3 christos break;
4208 1.3 christos
4209 1.3 christos default:
4210 1.3 christos BFD_ASSERT (FALSE);
4211 1.1 skrll break;
4212 1.1 skrll }
4213 1.1 skrll }
4214 1.1 skrll
4215 1.1 skrll got_entry = got_entry->u.s2.next;
4216 1.1 skrll }
4217 1.1 skrll }
4218 1.1 skrll
4219 1.1 skrll if (h->needs_copy)
4220 1.1 skrll {
4221 1.1 skrll asection *s;
4222 1.1 skrll Elf_Internal_Rela rela;
4223 1.1 skrll bfd_byte *loc;
4224 1.1 skrll
4225 1.1 skrll /* This symbol needs a copy reloc. Set it up. */
4226 1.1 skrll
4227 1.1 skrll BFD_ASSERT (h->dynindx != -1
4228 1.1 skrll && (h->root.type == bfd_link_hash_defined
4229 1.4 christos || h->root.type == bfd_link_hash_defweak));
4230 1.1 skrll
4231 1.1 skrll s = bfd_get_linker_section (dynobj, ".rela.bss");
4232 1.1 skrll BFD_ASSERT (s != NULL);
4233 1.1 skrll
4234 1.1 skrll rela.r_offset = (h->root.u.def.value
4235 1.1 skrll + h->root.u.def.section->output_section->vma
4236 1.1 skrll + h->root.u.def.section->output_offset);
4237 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
4238 1.1 skrll rela.r_addend = 0;
4239 1.1 skrll loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
4240 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4241 1.1 skrll }
4242 1.1 skrll
4243 1.1 skrll return TRUE;
4244 1.1 skrll }
4245 1.1 skrll
4246 1.1 skrll /* Finish up the dynamic sections. */
4247 1.4 christos
4248 1.1 skrll static bfd_boolean
4249 1.1 skrll elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4250 1.1 skrll {
4251 1.1 skrll bfd *dynobj;
4252 1.1 skrll asection *sgot;
4253 1.1 skrll asection *sdyn;
4254 1.1 skrll
4255 1.10.12.1 pgoyette dynobj = elf_hash_table (info)->dynobj;
4256 1.1 skrll
4257 1.4 christos sgot = elf_hash_table (info)->sgotplt;
4258 1.1 skrll BFD_ASSERT (sgot != NULL);
4259 1.1 skrll sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4260 1.1 skrll
4261 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
4262 1.1 skrll {
4263 1.1 skrll asection *splt;
4264 1.10.12.1 pgoyette Elf32_External_Dyn *dyncon, *dynconend;
4265 1.1 skrll
4266 1.1 skrll splt = elf_hash_table (info)->splt;
4267 1.1 skrll BFD_ASSERT (splt != NULL && sdyn != NULL);
4268 1.1 skrll
4269 1.1 skrll dyncon = (Elf32_External_Dyn *) sdyn->contents;
4270 1.1 skrll dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4271 1.1 skrll for (; dyncon < dynconend; dyncon++)
4272 1.1 skrll {
4273 1.1 skrll Elf_Internal_Dyn dyn;
4274 1.1 skrll asection *s;
4275 1.1 skrll
4276 1.1 skrll bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4277 1.1 skrll
4278 1.1 skrll switch (dyn.d_tag)
4279 1.1 skrll {
4280 1.1 skrll default:
4281 1.1 skrll break;
4282 1.10.12.1 pgoyette
4283 1.1 skrll case DT_PLTGOT:
4284 1.1 skrll s = elf_hash_table (info)->sgotplt;
4285 1.10.12.1 pgoyette goto get_vma;
4286 1.1 skrll case DT_JMPREL:
4287 1.10 christos s = elf_hash_table (info)->srelplt;
4288 1.1 skrll get_vma:
4289 1.1 skrll dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4290 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4291 1.1 skrll break;
4292 1.10.12.1 pgoyette
4293 1.1 skrll case DT_PLTRELSZ:
4294 1.1 skrll s = elf_hash_table (info)->srelplt;
4295 1.1 skrll dyn.d_un.d_val = s->size;
4296 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4297 1.1 skrll break;
4298 1.1 skrll }
4299 1.1 skrll }
4300 1.1 skrll
4301 1.1 skrll /* Fill in the first entry in the procedure linkage table. */
4302 1.1 skrll if (splt->size > 0)
4303 1.1 skrll {
4304 1.1 skrll const struct elf_m68k_plt_info *plt_info;
4305 1.1 skrll
4306 1.1 skrll plt_info = elf_m68k_hash_table (info)->plt_info;
4307 1.1 skrll memcpy (splt->contents, plt_info->plt0_entry, plt_info->size);
4308 1.1 skrll
4309 1.1 skrll elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4,
4310 1.1 skrll (sgot->output_section->vma
4311 1.1 skrll + sgot->output_offset
4312 1.1 skrll + 4));
4313 1.1 skrll
4314 1.1 skrll elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8,
4315 1.1 skrll (sgot->output_section->vma
4316 1.1 skrll + sgot->output_offset
4317 1.1 skrll + 8));
4318 1.1 skrll
4319 1.1 skrll elf_section_data (splt->output_section)->this_hdr.sh_entsize
4320 1.1 skrll = plt_info->size;
4321 1.1 skrll }
4322 1.1 skrll }
4323 1.1 skrll
4324 1.1 skrll /* Fill in the first three entries in the global offset table. */
4325 1.1 skrll if (sgot->size > 0)
4326 1.1 skrll {
4327 1.1 skrll if (sdyn == NULL)
4328 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4329 1.1 skrll else
4330 1.1 skrll bfd_put_32 (output_bfd,
4331 1.1 skrll sdyn->output_section->vma + sdyn->output_offset,
4332 1.1 skrll sgot->contents);
4333 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4334 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4335 1.1 skrll }
4336 1.1 skrll
4337 1.1 skrll elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4338 1.1 skrll
4339 1.1 skrll return TRUE;
4340 1.1 skrll }
4341 1.1 skrll
4342 1.1 skrll /* Given a .data section and a .emreloc in-memory section, store
4343 1.1 skrll relocation information into the .emreloc section which can be
4344 1.1 skrll used at runtime to relocate the section. This is called by the
4345 1.1 skrll linker when the --embedded-relocs switch is used. This is called
4346 1.1 skrll after the add_symbols entry point has been called for all the
4347 1.1 skrll objects, and before the final_link entry point is called. */
4348 1.10 christos
4349 1.10 christos bfd_boolean
4350 1.10 christos bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info,
4351 1.1 skrll asection *datasec, asection *relsec,
4352 1.1 skrll char **errmsg)
4353 1.1 skrll {
4354 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
4355 1.1 skrll Elf_Internal_Sym *isymbuf = NULL;
4356 1.1 skrll Elf_Internal_Rela *internal_relocs = NULL;
4357 1.1 skrll Elf_Internal_Rela *irel, *irelend;
4358 1.1 skrll bfd_byte *p;
4359 1.6 christos bfd_size_type amt;
4360 1.1 skrll
4361 1.1 skrll BFD_ASSERT (! bfd_link_relocatable (info));
4362 1.1 skrll
4363 1.1 skrll *errmsg = NULL;
4364 1.1 skrll
4365 1.1 skrll if (datasec->reloc_count == 0)
4366 1.1 skrll return TRUE;
4367 1.1 skrll
4368 1.1 skrll symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4369 1.1 skrll
4370 1.4 christos /* Get a copy of the native relocations. */
4371 1.1 skrll internal_relocs = (_bfd_elf_link_read_relocs
4372 1.1 skrll (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL,
4373 1.1 skrll info->keep_memory));
4374 1.1 skrll if (internal_relocs == NULL)
4375 1.1 skrll goto error_return;
4376 1.1 skrll
4377 1.1 skrll amt = (bfd_size_type) datasec->reloc_count * 12;
4378 1.1 skrll relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
4379 1.1 skrll if (relsec->contents == NULL)
4380 1.1 skrll goto error_return;
4381 1.1 skrll
4382 1.1 skrll p = relsec->contents;
4383 1.1 skrll
4384 1.1 skrll irelend = internal_relocs + datasec->reloc_count;
4385 1.1 skrll for (irel = internal_relocs; irel < irelend; irel++, p += 12)
4386 1.1 skrll {
4387 1.1 skrll asection *targetsec;
4388 1.1 skrll
4389 1.1 skrll /* We are going to write a four byte longword into the runtime
4390 1.1 skrll reloc section. The longword will be the address in the data
4391 1.1 skrll section which must be relocated. It is followed by the name
4392 1.1 skrll of the target section NUL-padded or truncated to 8
4393 1.1 skrll characters. */
4394 1.1 skrll
4395 1.1 skrll /* We can only relocate absolute longword relocs at run time. */
4396 1.1 skrll if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32)
4397 1.1 skrll {
4398 1.1 skrll *errmsg = _("unsupported reloc type");
4399 1.1 skrll bfd_set_error (bfd_error_bad_value);
4400 1.1 skrll goto error_return;
4401 1.1 skrll }
4402 1.1 skrll
4403 1.1 skrll /* Get the target section referred to by the reloc. */
4404 1.1 skrll if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4405 1.1 skrll {
4406 1.1 skrll /* A local symbol. */
4407 1.1 skrll Elf_Internal_Sym *isym;
4408 1.1 skrll
4409 1.1 skrll /* Read this BFD's local symbols if we haven't done so already. */
4410 1.1 skrll if (isymbuf == NULL)
4411 1.1 skrll {
4412 1.1 skrll isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4413 1.1 skrll if (isymbuf == NULL)
4414 1.1 skrll isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4415 1.1 skrll symtab_hdr->sh_info, 0,
4416 1.1 skrll NULL, NULL, NULL);
4417 1.1 skrll if (isymbuf == NULL)
4418 1.1 skrll goto error_return;
4419 1.1 skrll }
4420 1.1 skrll
4421 1.1 skrll isym = isymbuf + ELF32_R_SYM (irel->r_info);
4422 1.1 skrll targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4423 1.1 skrll }
4424 1.1 skrll else
4425 1.1 skrll {
4426 1.1 skrll unsigned long indx;
4427 1.1 skrll struct elf_link_hash_entry *h;
4428 1.1 skrll
4429 1.1 skrll /* An external symbol. */
4430 1.1 skrll indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4431 1.1 skrll h = elf_sym_hashes (abfd)[indx];
4432 1.1 skrll BFD_ASSERT (h != NULL);
4433 1.1 skrll if (h->root.type == bfd_link_hash_defined
4434 1.1 skrll || h->root.type == bfd_link_hash_defweak)
4435 1.1 skrll targetsec = h->root.u.def.section;
4436 1.1 skrll else
4437 1.1 skrll targetsec = NULL;
4438 1.1 skrll }
4439 1.1 skrll
4440 1.1 skrll bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
4441 1.1 skrll memset (p + 4, 0, 8);
4442 1.1 skrll if (targetsec != NULL)
4443 1.1 skrll strncpy ((char *) p + 4, targetsec->output_section->name, 8);
4444 1.1 skrll }
4445 1.1 skrll
4446 1.1 skrll if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4447 1.1 skrll free (isymbuf);
4448 1.1 skrll if (internal_relocs != NULL
4449 1.1 skrll && elf_section_data (datasec)->relocs != internal_relocs)
4450 1.1 skrll free (internal_relocs);
4451 1.1 skrll return TRUE;
4452 1.1 skrll
4453 1.1 skrll error_return:
4454 1.1 skrll if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
4455 1.1 skrll free (isymbuf);
4456 1.1 skrll if (internal_relocs != NULL
4457 1.1 skrll && elf_section_data (datasec)->relocs != internal_relocs)
4458 1.1 skrll free (internal_relocs);
4459 1.1 skrll return FALSE;
4460 1.1 skrll }
4461 1.1 skrll
4462 1.1 skrll /* Set target options. */
4463 1.1 skrll
4464 1.1 skrll void
4465 1.1 skrll bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling)
4466 1.3 christos {
4467 1.3 christos struct elf_m68k_link_hash_table *htab;
4468 1.3 christos bfd_boolean use_neg_got_offsets_p;
4469 1.1 skrll bfd_boolean allow_multigot_p;
4470 1.1 skrll bfd_boolean local_gp_p;
4471 1.1 skrll
4472 1.1 skrll switch (got_handling)
4473 1.1 skrll {
4474 1.3 christos case 0:
4475 1.3 christos /* --got=single. */
4476 1.3 christos local_gp_p = FALSE;
4477 1.1 skrll use_neg_got_offsets_p = FALSE;
4478 1.1 skrll allow_multigot_p = FALSE;
4479 1.1 skrll break;
4480 1.1 skrll
4481 1.3 christos case 1:
4482 1.3 christos /* --got=negative. */
4483 1.3 christos local_gp_p = TRUE;
4484 1.1 skrll use_neg_got_offsets_p = TRUE;
4485 1.1 skrll allow_multigot_p = FALSE;
4486 1.1 skrll break;
4487 1.1 skrll
4488 1.3 christos case 2:
4489 1.3 christos /* --got=multigot. */
4490 1.3 christos local_gp_p = TRUE;
4491 1.1 skrll use_neg_got_offsets_p = TRUE;
4492 1.1 skrll allow_multigot_p = TRUE;
4493 1.1 skrll break;
4494 1.1 skrll
4495 1.3 christos default:
4496 1.3 christos BFD_ASSERT (FALSE);
4497 1.3 christos return;
4498 1.3 christos }
4499 1.3 christos
4500 1.3 christos htab = elf_m68k_hash_table (info);
4501 1.3 christos if (htab != NULL)
4502 1.3 christos {
4503 1.3 christos htab->local_gp_p = local_gp_p;
4504 1.1 skrll htab->use_neg_got_offsets_p = use_neg_got_offsets_p;
4505 1.1 skrll htab->allow_multigot_p = allow_multigot_p;
4506 1.1 skrll }
4507 1.1 skrll }
4508 1.6 christos
4509 1.6 christos static enum elf_reloc_type_class
4510 1.6 christos elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4511 1.1 skrll const asection *rel_sec ATTRIBUTE_UNUSED,
4512 1.1 skrll const Elf_Internal_Rela *rela)
4513 1.1 skrll {
4514 1.1 skrll switch ((int) ELF32_R_TYPE (rela->r_info))
4515 1.1 skrll {
4516 1.1 skrll case R_68K_RELATIVE:
4517 1.1 skrll return reloc_class_relative;
4518 1.1 skrll case R_68K_JMP_SLOT:
4519 1.1 skrll return reloc_class_plt;
4520 1.1 skrll case R_68K_COPY:
4521 1.1 skrll return reloc_class_copy;
4522 1.1 skrll default:
4523 1.1 skrll return reloc_class_normal;
4524 1.1 skrll }
4525 1.1 skrll }
4526 1.1 skrll
4527 1.1 skrll /* Return address for Ith PLT stub in section PLT, for relocation REL
4528 1.1 skrll or (bfd_vma) -1 if it should not be included. */
4529 1.1 skrll
4530 1.1 skrll static bfd_vma
4531 1.1 skrll elf_m68k_plt_sym_val (bfd_vma i, const asection *plt,
4532 1.1 skrll const arelent *rel ATTRIBUTE_UNUSED)
4533 1.1 skrll {
4534 1.1 skrll return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size;
4535 1.4 christos }
4536 1.4 christos
4537 1.4 christos /* Support for core dump NOTE sections. */
4538 1.4 christos
4539 1.4 christos static bfd_boolean
4540 1.4 christos elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
4541 1.4 christos {
4542 1.4 christos int offset;
4543 1.4 christos size_t size;
4544 1.4 christos
4545 1.4 christos switch (note->descsz)
4546 1.4 christos {
4547 1.4 christos default:
4548 1.4 christos return FALSE;
4549 1.4 christos
4550 1.6 christos case 154: /* Linux/m68k */
4551 1.4 christos /* pr_cursig */
4552 1.4 christos elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
4553 1.6 christos
4554 1.4 christos /* pr_pid */
4555 1.4 christos elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22);
4556 1.4 christos
4557 1.4 christos /* pr_reg */
4558 1.4 christos offset = 70;
4559 1.4 christos size = 80;
4560 1.4 christos
4561 1.4 christos break;
4562 1.4 christos }
4563 1.4 christos
4564 1.4 christos /* Make a ".reg/999" section. */
4565 1.4 christos return _bfd_elfcore_make_pseudosection (abfd, ".reg",
4566 1.4 christos size, note->descpos + offset);
4567 1.4 christos }
4568 1.4 christos
4569 1.4 christos static bfd_boolean
4570 1.4 christos elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
4571 1.4 christos {
4572 1.4 christos switch (note->descsz)
4573 1.4 christos {
4574 1.4 christos default:
4575 1.4 christos return FALSE;
4576 1.6 christos
4577 1.4 christos case 124: /* Linux/m68k elf_prpsinfo. */
4578 1.6 christos elf_tdata (abfd)->core->pid
4579 1.4 christos = bfd_get_32 (abfd, note->descdata + 12);
4580 1.6 christos elf_tdata (abfd)->core->program
4581 1.4 christos = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
4582 1.4 christos elf_tdata (abfd)->core->command
4583 1.4 christos = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
4584 1.4 christos }
4585 1.4 christos
4586 1.4 christos /* Note that for some reason, a spurious space is tacked
4587 1.4 christos onto the end of the args in some (at least one anyway)
4588 1.6 christos implementations, so strip it off if it exists. */
4589 1.4 christos {
4590 1.4 christos char *command = elf_tdata (abfd)->core->command;
4591 1.4 christos int n = strlen (command);
4592 1.4 christos
4593 1.4 christos if (n > 0 && command[n - 1] == ' ')
4594 1.4 christos command[n - 1] = '\0';
4595 1.4 christos }
4596 1.4 christos
4597 1.4 christos return TRUE;
4598 1.6 christos }
4599 1.6 christos
4600 1.6 christos /* Hook called by the linker routine which adds symbols from an object
4601 1.6 christos file. */
4602 1.6 christos
4603 1.6 christos static bfd_boolean
4604 1.6 christos elf_m68k_add_symbol_hook (bfd *abfd,
4605 1.6 christos struct bfd_link_info *info,
4606 1.6 christos Elf_Internal_Sym *sym,
4607 1.6 christos const char **namep ATTRIBUTE_UNUSED,
4608 1.6 christos flagword *flagsp ATTRIBUTE_UNUSED,
4609 1.6 christos asection **secp ATTRIBUTE_UNUSED,
4610 1.10 christos bfd_vma *valp ATTRIBUTE_UNUSED)
4611 1.6 christos {
4612 1.6 christos if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
4613 1.10 christos && (abfd->flags & DYNAMIC) == 0
4614 1.6 christos && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4615 1.6 christos elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4616 1.6 christos
4617 1.6 christos return TRUE;
4618 1.6 christos }
4619 1.1 skrll
4620 1.1 skrll #define TARGET_BIG_SYM m68k_elf32_vec
4621 1.1 skrll #define TARGET_BIG_NAME "elf32-m68k"
4622 1.1 skrll #define ELF_MACHINE_CODE EM_68K
4623 1.1 skrll #define ELF_MAXPAGESIZE 0x2000
4624 1.1 skrll #define elf_backend_create_dynamic_sections \
4625 1.1 skrll _bfd_elf_create_dynamic_sections
4626 1.1 skrll #define bfd_elf32_bfd_link_hash_table_create \
4627 1.1 skrll elf_m68k_link_hash_table_create
4628 1.1 skrll #define bfd_elf32_bfd_final_link bfd_elf_final_link
4629 1.1 skrll
4630 1.1 skrll #define elf_backend_check_relocs elf_m68k_check_relocs
4631 1.1 skrll #define elf_backend_always_size_sections \
4632 1.1 skrll elf_m68k_always_size_sections
4633 1.1 skrll #define elf_backend_adjust_dynamic_symbol \
4634 1.1 skrll elf_m68k_adjust_dynamic_symbol
4635 1.3 christos #define elf_backend_size_dynamic_sections \
4636 1.1 skrll elf_m68k_size_dynamic_sections
4637 1.1 skrll #define elf_backend_final_write_processing elf_m68k_final_write_processing
4638 1.1 skrll #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4639 1.1 skrll #define elf_backend_relocate_section elf_m68k_relocate_section
4640 1.1 skrll #define elf_backend_finish_dynamic_symbol \
4641 1.1 skrll elf_m68k_finish_dynamic_symbol
4642 1.1 skrll #define elf_backend_finish_dynamic_sections \
4643 1.1 skrll elf_m68k_finish_dynamic_sections
4644 1.1 skrll #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook
4645 1.10.12.1 pgoyette #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol
4646 1.1 skrll #define bfd_elf32_bfd_merge_private_bfd_data \
4647 1.10.12.1 pgoyette elf32_m68k_merge_private_bfd_data
4648 1.1 skrll #define bfd_elf32_bfd_set_private_flags \
4649 1.10.12.1 pgoyette elf32_m68k_set_private_flags
4650 1.1 skrll #define bfd_elf32_bfd_print_private_bfd_data \
4651 1.1 skrll elf32_m68k_print_private_bfd_data
4652 1.1 skrll #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class
4653 1.4 christos #define elf_backend_plt_sym_val elf_m68k_plt_sym_val
4654 1.4 christos #define elf_backend_object_p elf32_m68k_object_p
4655 1.6 christos #define elf_backend_grok_prstatus elf_m68k_grok_prstatus
4656 1.1 skrll #define elf_backend_grok_psinfo elf_m68k_grok_psinfo
4657 1.1 skrll #define elf_backend_add_symbol_hook elf_m68k_add_symbol_hook
4658 1.1 skrll
4659 1.1 skrll #define elf_backend_can_gc_sections 1
4660 1.1 skrll #define elf_backend_can_refcount 1
4661 1.1 skrll #define elf_backend_want_got_plt 1
4662 1.1 skrll #define elf_backend_plt_readonly 1
4663 1.1 skrll #define elf_backend_want_plt_sym 0
4664 1.10.12.1 pgoyette #define elf_backend_got_header_size 12
4665 1.10.12.1 pgoyette #define elf_backend_rela_normal 1
4666 1.10.12.1 pgoyette #define elf_backend_dtrel_excludes_plt 1
4667 1.1 skrll
4668 1.1 skrll #define elf_backend_linux_prpsinfo32_ugid16 TRUE
4669
4670 #include "elf32-target.h"
4671