Commit | Line | Data |
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7ba29e2a NC |
1 | /* Xilinx MicroBlaze-specific support for 32-bit ELF |
2 | ||
b3adc24a | 3 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
7ba29e2a NC |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the | |
19 | Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
20 | Boston, MA 02110-1301, USA. */ | |
21 | ||
22 | ||
23 | int dbg = 0; | |
24 | ||
7ba29e2a | 25 | #include "sysdep.h" |
691bf19c | 26 | #include "bfd.h" |
7ba29e2a NC |
27 | #include "bfdlink.h" |
28 | #include "libbfd.h" | |
29 | #include "elf-bfd.h" | |
30 | #include "elf/microblaze.h" | |
31 | #include <assert.h> | |
32 | ||
33 | #define USE_RELA /* Only USE_REL is actually significant, but this is | |
34 | here are a reminder... */ | |
35 | #define INST_WORD_SIZE 4 | |
36 | ||
37 | static int ro_small_data_pointer = 0; | |
38 | static int rw_small_data_pointer = 0; | |
39 | ||
40 | static reloc_howto_type * microblaze_elf_howto_table [(int) R_MICROBLAZE_max]; | |
41 | ||
42 | static reloc_howto_type microblaze_elf_howto_raw[] = | |
43 | { | |
44 | /* This reloc does nothing. */ | |
45 | HOWTO (R_MICROBLAZE_NONE, /* Type. */ | |
07d6d2b8 AM |
46 | 0, /* Rightshift. */ |
47 | 3, /* Size (0 = byte, 1 = short, 2 = long). */ | |
48 | 0, /* Bitsize. */ | |
49 | FALSE, /* PC_relative. */ | |
50 | 0, /* Bitpos. */ | |
51 | complain_overflow_dont, /* Complain on overflow. */ | |
52 | NULL, /* Special Function. */ | |
53 | "R_MICROBLAZE_NONE", /* Name. */ | |
54 | FALSE, /* Partial Inplace. */ | |
55 | 0, /* Source Mask. */ | |
56 | 0, /* Dest Mask. */ | |
57 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
58 | |
59 | /* A standard 32 bit relocation. */ | |
07d6d2b8 AM |
60 | HOWTO (R_MICROBLAZE_32, /* Type. */ |
61 | 0, /* Rightshift. */ | |
62 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
63 | 32, /* Bitsize. */ | |
64 | FALSE, /* PC_relative. */ | |
65 | 0, /* Bitpos. */ | |
66 | complain_overflow_bitfield, /* Complain on overflow. */ | |
67 | bfd_elf_generic_reloc,/* Special Function. */ | |
68 | "R_MICROBLAZE_32", /* Name. */ | |
69 | FALSE, /* Partial Inplace. */ | |
70 | 0, /* Source Mask. */ | |
71 | 0xffffffff, /* Dest Mask. */ | |
72 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
73 | |
74 | /* A standard PCREL 32 bit relocation. */ | |
75 | HOWTO (R_MICROBLAZE_32_PCREL,/* Type. */ | |
07d6d2b8 AM |
76 | 0, /* Rightshift. */ |
77 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
78 | 32, /* Bitsize. */ | |
79 | TRUE, /* PC_relative. */ | |
80 | 0, /* Bitpos. */ | |
81 | complain_overflow_bitfield, /* Complain on overflow. */ | |
82 | bfd_elf_generic_reloc,/* Special Function. */ | |
83 | "R_MICROBLAZE_32_PCREL", /* Name. */ | |
84 | TRUE, /* Partial Inplace. */ | |
85 | 0, /* Source Mask. */ | |
86 | 0xffffffff, /* Dest Mask. */ | |
87 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
88 | |
89 | /* A 64 bit PCREL relocation. Table-entry not really used. */ | |
90 | HOWTO (R_MICROBLAZE_64_PCREL,/* Type. */ | |
07d6d2b8 AM |
91 | 0, /* Rightshift. */ |
92 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
93 | 16, /* Bitsize. */ | |
94 | TRUE, /* PC_relative. */ | |
95 | 0, /* Bitpos. */ | |
96 | complain_overflow_dont, /* Complain on overflow. */ | |
97 | bfd_elf_generic_reloc,/* Special Function. */ | |
98 | "R_MICROBLAZE_64_PCREL", /* Name. */ | |
99 | FALSE, /* Partial Inplace. */ | |
100 | 0, /* Source Mask. */ | |
101 | 0x0000ffff, /* Dest Mask. */ | |
102 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
103 | |
104 | /* The low half of a PCREL 32 bit relocation. */ | |
07d6d2b8 AM |
105 | HOWTO (R_MICROBLAZE_32_PCREL_LO, /* Type. */ |
106 | 0, /* Rightshift. */ | |
107 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
108 | 16, /* Bitsize. */ | |
109 | TRUE, /* PC_relative. */ | |
110 | 0, /* Bitpos. */ | |
111 | complain_overflow_signed, /* Complain on overflow. */ | |
112 | bfd_elf_generic_reloc, /* Special Function. */ | |
113 | "R_MICROBLAZE_32_PCREL_LO", /* Name. */ | |
114 | FALSE, /* Partial Inplace. */ | |
115 | 0, /* Source Mask. */ | |
116 | 0x0000ffff, /* Dest Mask. */ | |
117 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
118 | |
119 | /* A 64 bit relocation. Table entry not really used. */ | |
07d6d2b8 AM |
120 | HOWTO (R_MICROBLAZE_64, /* Type. */ |
121 | 0, /* Rightshift. */ | |
122 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
123 | 16, /* Bitsize. */ | |
124 | FALSE, /* PC_relative. */ | |
125 | 0, /* Bitpos. */ | |
126 | complain_overflow_dont, /* Complain on overflow. */ | |
127 | bfd_elf_generic_reloc,/* Special Function. */ | |
128 | "R_MICROBLAZE_64", /* Name. */ | |
129 | FALSE, /* Partial Inplace. */ | |
130 | 0, /* Source Mask. */ | |
131 | 0x0000ffff, /* Dest Mask. */ | |
132 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
133 | |
134 | /* The low half of a 32 bit relocation. */ | |
07d6d2b8 AM |
135 | HOWTO (R_MICROBLAZE_32_LO, /* Type. */ |
136 | 0, /* Rightshift. */ | |
137 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
138 | 16, /* Bitsize. */ | |
139 | FALSE, /* PC_relative. */ | |
140 | 0, /* Bitpos. */ | |
141 | complain_overflow_signed, /* Complain on overflow. */ | |
142 | bfd_elf_generic_reloc,/* Special Function. */ | |
143 | "R_MICROBLAZE_32_LO", /* Name. */ | |
144 | FALSE, /* Partial Inplace. */ | |
145 | 0, /* Source Mask. */ | |
146 | 0x0000ffff, /* Dest Mask. */ | |
147 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
148 | |
149 | /* Read-only small data section relocation. */ | |
07d6d2b8 AM |
150 | HOWTO (R_MICROBLAZE_SRO32, /* Type. */ |
151 | 0, /* Rightshift. */ | |
152 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
153 | 16, /* Bitsize. */ | |
154 | FALSE, /* PC_relative. */ | |
155 | 0, /* Bitpos. */ | |
156 | complain_overflow_bitfield, /* Complain on overflow. */ | |
157 | bfd_elf_generic_reloc,/* Special Function. */ | |
158 | "R_MICROBLAZE_SRO32", /* Name. */ | |
159 | FALSE, /* Partial Inplace. */ | |
160 | 0, /* Source Mask. */ | |
161 | 0x0000ffff, /* Dest Mask. */ | |
162 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
163 | |
164 | /* Read-write small data area relocation. */ | |
07d6d2b8 AM |
165 | HOWTO (R_MICROBLAZE_SRW32, /* Type. */ |
166 | 0, /* Rightshift. */ | |
167 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
168 | 16, /* Bitsize. */ | |
169 | FALSE, /* PC_relative. */ | |
170 | 0, /* Bitpos. */ | |
171 | complain_overflow_bitfield, /* Complain on overflow. */ | |
172 | bfd_elf_generic_reloc,/* Special Function. */ | |
173 | "R_MICROBLAZE_SRW32", /* Name. */ | |
174 | FALSE, /* Partial Inplace. */ | |
175 | 0, /* Source Mask. */ | |
176 | 0x0000ffff, /* Dest Mask. */ | |
177 | FALSE), /* PC relative offset? */ | |
178 | ||
179 | /* This reloc does nothing. Used for relaxation. */ | |
7ba29e2a | 180 | HOWTO (R_MICROBLAZE_64_NONE, /* Type. */ |
07d6d2b8 AM |
181 | 0, /* Rightshift. */ |
182 | 3, /* Size (0 = byte, 1 = short, 2 = long). */ | |
183 | 0, /* Bitsize. */ | |
184 | TRUE, /* PC_relative. */ | |
185 | 0, /* Bitpos. */ | |
186 | complain_overflow_dont, /* Complain on overflow. */ | |
187 | NULL, /* Special Function. */ | |
188 | "R_MICROBLAZE_64_NONE",/* Name. */ | |
189 | FALSE, /* Partial Inplace. */ | |
190 | 0, /* Source Mask. */ | |
191 | 0, /* Dest Mask. */ | |
192 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
193 | |
194 | /* Symbol Op Symbol relocation. */ | |
07d6d2b8 AM |
195 | HOWTO (R_MICROBLAZE_32_SYM_OP_SYM, /* Type. */ |
196 | 0, /* Rightshift. */ | |
197 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
198 | 32, /* Bitsize. */ | |
199 | FALSE, /* PC_relative. */ | |
200 | 0, /* Bitpos. */ | |
201 | complain_overflow_bitfield, /* Complain on overflow. */ | |
202 | bfd_elf_generic_reloc,/* Special Function. */ | |
203 | "R_MICROBLAZE_32_SYM_OP_SYM", /* Name. */ | |
204 | FALSE, /* Partial Inplace. */ | |
205 | 0, /* Source Mask. */ | |
206 | 0xffffffff, /* Dest Mask. */ | |
207 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
208 | |
209 | /* GNU extension to record C++ vtable hierarchy. */ | |
210 | HOWTO (R_MICROBLAZE_GNU_VTINHERIT, /* Type. */ | |
07d6d2b8 AM |
211 | 0, /* Rightshift. */ |
212 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
213 | 0, /* Bitsize. */ | |
214 | FALSE, /* PC_relative. */ | |
215 | 0, /* Bitpos. */ | |
216 | complain_overflow_dont,/* Complain on overflow. */ | |
217 | NULL, /* Special Function. */ | |
218 | "R_MICROBLAZE_GNU_VTINHERIT", /* Name. */ | |
219 | FALSE, /* Partial Inplace. */ | |
220 | 0, /* Source Mask. */ | |
221 | 0, /* Dest Mask. */ | |
222 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
223 | |
224 | /* GNU extension to record C++ vtable member usage. */ | |
225 | HOWTO (R_MICROBLAZE_GNU_VTENTRY, /* Type. */ | |
07d6d2b8 AM |
226 | 0, /* Rightshift. */ |
227 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
228 | 0, /* Bitsize. */ | |
229 | FALSE, /* PC_relative. */ | |
230 | 0, /* Bitpos. */ | |
231 | complain_overflow_dont,/* Complain on overflow. */ | |
232 | _bfd_elf_rel_vtable_reloc_fn, /* Special Function. */ | |
233 | "R_MICROBLAZE_GNU_VTENTRY", /* Name. */ | |
234 | FALSE, /* Partial Inplace. */ | |
235 | 0, /* Source Mask. */ | |
236 | 0, /* Dest Mask. */ | |
237 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
238 | |
239 | /* A 64 bit GOTPC relocation. Table-entry not really used. */ | |
07d6d2b8 AM |
240 | HOWTO (R_MICROBLAZE_GOTPC_64, /* Type. */ |
241 | 0, /* Rightshift. */ | |
242 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
243 | 16, /* Bitsize. */ | |
244 | TRUE, /* PC_relative. */ | |
245 | 0, /* Bitpos. */ | |
246 | complain_overflow_dont, /* Complain on overflow. */ | |
247 | bfd_elf_generic_reloc, /* Special Function. */ | |
248 | "R_MICROBLAZE_GOTPC_64", /* Name. */ | |
249 | FALSE, /* Partial Inplace. */ | |
250 | 0, /* Source Mask. */ | |
251 | 0x0000ffff, /* Dest Mask. */ | |
252 | TRUE), /* PC relative offset? */ | |
7ba29e2a | 253 | |
3f0a5f17 | 254 | /* A 64 bit TEXTPCREL relocation. Table-entry not really used. */ |
4b24dd1a | 255 | HOWTO (R_MICROBLAZE_TEXTPCREL_64, /* Type. */ |
3f0a5f17 ME |
256 | 0, /* Rightshift. */ |
257 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
258 | 16, /* Bitsize. */ | |
259 | TRUE, /* PC_relative. */ | |
260 | 0, /* Bitpos. */ | |
261 | complain_overflow_dont, /* Complain on overflow. */ | |
262 | bfd_elf_generic_reloc, /* Special Function. */ | |
4b24dd1a | 263 | "R_MICROBLAZE_TEXTPCREL_64", /* Name. */ |
3f0a5f17 ME |
264 | FALSE, /* Partial Inplace. */ |
265 | 0, /* Source Mask. */ | |
266 | 0x0000ffff, /* Dest Mask. */ | |
4b24dd1a | 267 | TRUE), /* PC relative offset? */ |
3f0a5f17 | 268 | |
7ba29e2a NC |
269 | /* A 64 bit GOT relocation. Table-entry not really used. */ |
270 | HOWTO (R_MICROBLAZE_GOT_64, /* Type. */ | |
07d6d2b8 AM |
271 | 0, /* Rightshift. */ |
272 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
273 | 16, /* Bitsize. */ | |
274 | FALSE, /* PC_relative. */ | |
275 | 0, /* Bitpos. */ | |
276 | complain_overflow_dont, /* Complain on overflow. */ | |
277 | bfd_elf_generic_reloc,/* Special Function. */ | |
278 | "R_MICROBLAZE_GOT_64",/* Name. */ | |
279 | FALSE, /* Partial Inplace. */ | |
280 | 0, /* Source Mask. */ | |
281 | 0x0000ffff, /* Dest Mask. */ | |
282 | FALSE), /* PC relative offset? */ | |
7ba29e2a | 283 | |
3f0a5f17 ME |
284 | /* A 64 bit TEXTREL relocation. Table-entry not really used. */ |
285 | HOWTO (R_MICROBLAZE_TEXTREL_64, /* Type. */ | |
286 | 0, /* Rightshift. */ | |
287 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
288 | 16, /* Bitsize. */ | |
289 | FALSE, /* PC_relative. */ | |
290 | 0, /* Bitpos. */ | |
291 | complain_overflow_dont, /* Complain on overflow. */ | |
292 | bfd_elf_generic_reloc,/* Special Function. */ | |
293 | "R_MICROBLAZE_TEXTREL_64",/* Name. */ | |
294 | FALSE, /* Partial Inplace. */ | |
295 | 0, /* Source Mask. */ | |
296 | 0x0000ffff, /* Dest Mask. */ | |
4b24dd1a | 297 | FALSE), /* PC relative offset? */ |
3f0a5f17 | 298 | |
7ba29e2a NC |
299 | /* A 64 bit PLT relocation. Table-entry not really used. */ |
300 | HOWTO (R_MICROBLAZE_PLT_64, /* Type. */ | |
07d6d2b8 AM |
301 | 0, /* Rightshift. */ |
302 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
303 | 16, /* Bitsize. */ | |
304 | TRUE, /* PC_relative. */ | |
305 | 0, /* Bitpos. */ | |
306 | complain_overflow_dont, /* Complain on overflow. */ | |
307 | bfd_elf_generic_reloc,/* Special Function. */ | |
308 | "R_MICROBLAZE_PLT_64",/* Name. */ | |
309 | FALSE, /* Partial Inplace. */ | |
310 | 0, /* Source Mask. */ | |
311 | 0x0000ffff, /* Dest Mask. */ | |
312 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
313 | |
314 | /* Table-entry not really used. */ | |
07d6d2b8 AM |
315 | HOWTO (R_MICROBLAZE_REL, /* Type. */ |
316 | 0, /* Rightshift. */ | |
317 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
318 | 16, /* Bitsize. */ | |
319 | TRUE, /* PC_relative. */ | |
320 | 0, /* Bitpos. */ | |
321 | complain_overflow_dont, /* Complain on overflow. */ | |
322 | bfd_elf_generic_reloc,/* Special Function. */ | |
323 | "R_MICROBLAZE_REL", /* Name. */ | |
324 | FALSE, /* Partial Inplace. */ | |
325 | 0, /* Source Mask. */ | |
326 | 0x0000ffff, /* Dest Mask. */ | |
327 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
328 | |
329 | /* Table-entry not really used. */ | |
330 | HOWTO (R_MICROBLAZE_JUMP_SLOT,/* Type. */ | |
07d6d2b8 AM |
331 | 0, /* Rightshift. */ |
332 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
333 | 16, /* Bitsize. */ | |
334 | TRUE, /* PC_relative. */ | |
335 | 0, /* Bitpos. */ | |
336 | complain_overflow_dont, /* Complain on overflow. */ | |
337 | bfd_elf_generic_reloc,/* Special Function. */ | |
338 | "R_MICROBLAZE_JUMP_SLOT", /* Name. */ | |
339 | FALSE, /* Partial Inplace. */ | |
340 | 0, /* Source Mask. */ | |
341 | 0x0000ffff, /* Dest Mask. */ | |
342 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
343 | |
344 | /* Table-entry not really used. */ | |
345 | HOWTO (R_MICROBLAZE_GLOB_DAT,/* Type. */ | |
07d6d2b8 AM |
346 | 0, /* Rightshift. */ |
347 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
348 | 16, /* Bitsize. */ | |
349 | TRUE, /* PC_relative. */ | |
350 | 0, /* Bitpos. */ | |
351 | complain_overflow_dont, /* Complain on overflow. */ | |
352 | bfd_elf_generic_reloc,/* Special Function. */ | |
353 | "R_MICROBLAZE_GLOB_DAT", /* Name. */ | |
354 | FALSE, /* Partial Inplace. */ | |
355 | 0, /* Source Mask. */ | |
356 | 0x0000ffff, /* Dest Mask. */ | |
357 | TRUE), /* PC relative offset? */ | |
7ba29e2a NC |
358 | |
359 | /* A 64 bit GOT relative relocation. Table-entry not really used. */ | |
07d6d2b8 AM |
360 | HOWTO (R_MICROBLAZE_GOTOFF_64, /* Type. */ |
361 | 0, /* Rightshift. */ | |
362 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
363 | 16, /* Bitsize. */ | |
364 | FALSE, /* PC_relative. */ | |
365 | 0, /* Bitpos. */ | |
366 | complain_overflow_dont, /* Complain on overflow. */ | |
367 | bfd_elf_generic_reloc,/* Special Function. */ | |
368 | "R_MICROBLAZE_GOTOFF_64", /* Name. */ | |
369 | FALSE, /* Partial Inplace. */ | |
370 | 0, /* Source Mask. */ | |
371 | 0x0000ffff, /* Dest Mask. */ | |
372 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
373 | |
374 | /* A 32 bit GOT relative relocation. Table-entry not really used. */ | |
07d6d2b8 AM |
375 | HOWTO (R_MICROBLAZE_GOTOFF_32, /* Type. */ |
376 | 0, /* Rightshift. */ | |
377 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
378 | 16, /* Bitsize. */ | |
379 | FALSE, /* PC_relative. */ | |
380 | 0, /* Bitpos. */ | |
381 | complain_overflow_dont, /* Complain on overflow. */ | |
382 | bfd_elf_generic_reloc, /* Special Function. */ | |
383 | "R_MICROBLAZE_GOTOFF_32", /* Name. */ | |
384 | FALSE, /* Partial Inplace. */ | |
385 | 0, /* Source Mask. */ | |
386 | 0x0000ffff, /* Dest Mask. */ | |
387 | FALSE), /* PC relative offset? */ | |
7ba29e2a NC |
388 | |
389 | /* COPY relocation. Table-entry not really used. */ | |
07d6d2b8 AM |
390 | HOWTO (R_MICROBLAZE_COPY, /* Type. */ |
391 | 0, /* Rightshift. */ | |
392 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ | |
393 | 16, /* Bitsize. */ | |
394 | FALSE, /* PC_relative. */ | |
395 | 0, /* Bitpos. */ | |
396 | complain_overflow_dont, /* Complain on overflow. */ | |
397 | bfd_elf_generic_reloc,/* Special Function. */ | |
398 | "R_MICROBLAZE_COPY", /* Name. */ | |
399 | FALSE, /* Partial Inplace. */ | |
400 | 0, /* Source Mask. */ | |
401 | 0x0000ffff, /* Dest Mask. */ | |
402 | FALSE), /* PC relative offset? */ | |
69b06cc8 ME |
403 | |
404 | /* Marker relocs for TLS. */ | |
405 | HOWTO (R_MICROBLAZE_TLS, | |
406 | 0, /* rightshift */ | |
407 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
408 | 32, /* bitsize */ | |
409 | FALSE, /* pc_relative */ | |
410 | 0, /* bitpos */ | |
411 | complain_overflow_dont, /* complain_on_overflow */ | |
412 | bfd_elf_generic_reloc, /* special_function */ | |
413 | "R_MICROBLAZE_TLS", /* name */ | |
414 | FALSE, /* partial_inplace */ | |
415 | 0, /* src_mask */ | |
416 | 0x0000ffff, /* dst_mask */ | |
417 | FALSE), /* pcrel_offset */ | |
418 | ||
419 | HOWTO (R_MICROBLAZE_TLSGD, | |
420 | 0, /* rightshift */ | |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 32, /* bitsize */ | |
423 | FALSE, /* pc_relative */ | |
424 | 0, /* bitpos */ | |
425 | complain_overflow_dont, /* complain_on_overflow */ | |
426 | bfd_elf_generic_reloc, /* special_function */ | |
427 | "R_MICROBLAZE_TLSGD", /* name */ | |
428 | FALSE, /* partial_inplace */ | |
429 | 0, /* src_mask */ | |
430 | 0x0000ffff, /* dst_mask */ | |
431 | FALSE), /* pcrel_offset */ | |
432 | ||
433 | HOWTO (R_MICROBLAZE_TLSLD, | |
434 | 0, /* rightshift */ | |
435 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 32, /* bitsize */ | |
437 | FALSE, /* pc_relative */ | |
438 | 0, /* bitpos */ | |
439 | complain_overflow_dont, /* complain_on_overflow */ | |
440 | bfd_elf_generic_reloc, /* special_function */ | |
441 | "R_MICROBLAZE_TLSLD", /* name */ | |
442 | FALSE, /* partial_inplace */ | |
443 | 0, /* src_mask */ | |
444 | 0x0000ffff, /* dst_mask */ | |
445 | FALSE), /* pcrel_offset */ | |
446 | ||
447 | /* Computes the load module index of the load module that contains the | |
448 | definition of its TLS sym. */ | |
449 | HOWTO (R_MICROBLAZE_TLSDTPMOD32, | |
450 | 0, /* rightshift */ | |
451 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 32, /* bitsize */ | |
453 | FALSE, /* pc_relative */ | |
454 | 0, /* bitpos */ | |
455 | complain_overflow_dont, /* complain_on_overflow */ | |
456 | bfd_elf_generic_reloc, /* special_function */ | |
457 | "R_MICROBLAZE_TLSDTPMOD32", /* name */ | |
458 | FALSE, /* partial_inplace */ | |
459 | 0, /* src_mask */ | |
460 | 0x0000ffff, /* dst_mask */ | |
461 | FALSE), /* pcrel_offset */ | |
462 | ||
463 | /* Computes a dtv-relative displacement, the difference between the value | |
464 | of sym+add and the base address of the thread-local storage block that | |
465 | contains the definition of sym, minus 0x8000. Used for initializing GOT */ | |
466 | HOWTO (R_MICROBLAZE_TLSDTPREL32, | |
467 | 0, /* rightshift */ | |
468 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 32, /* bitsize */ | |
470 | FALSE, /* pc_relative */ | |
471 | 0, /* bitpos */ | |
472 | complain_overflow_dont, /* complain_on_overflow */ | |
473 | bfd_elf_generic_reloc, /* special_function */ | |
474 | "R_MICROBLAZE_TLSDTPREL32", /* name */ | |
475 | FALSE, /* partial_inplace */ | |
476 | 0, /* src_mask */ | |
477 | 0x0000ffff, /* dst_mask */ | |
478 | FALSE), /* pcrel_offset */ | |
479 | ||
480 | /* Computes a dtv-relative displacement, the difference between the value | |
481 | of sym+add and the base address of the thread-local storage block that | |
482 | contains the definition of sym, minus 0x8000. */ | |
483 | HOWTO (R_MICROBLAZE_TLSDTPREL64, | |
484 | 0, /* rightshift */ | |
485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 32, /* bitsize */ | |
487 | FALSE, /* pc_relative */ | |
488 | 0, /* bitpos */ | |
489 | complain_overflow_dont, /* complain_on_overflow */ | |
490 | bfd_elf_generic_reloc, /* special_function */ | |
491 | "R_MICROBLAZE_TLSDTPREL64", /* name */ | |
492 | FALSE, /* partial_inplace */ | |
493 | 0, /* src_mask */ | |
494 | 0x0000ffff, /* dst_mask */ | |
495 | FALSE), /* pcrel_offset */ | |
496 | ||
497 | /* Computes a tp-relative displacement, the difference between the value of | |
498 | sym+add and the value of the thread pointer (r13). */ | |
499 | HOWTO (R_MICROBLAZE_TLSGOTTPREL32, | |
500 | 0, /* rightshift */ | |
501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 32, /* bitsize */ | |
503 | FALSE, /* pc_relative */ | |
504 | 0, /* bitpos */ | |
505 | complain_overflow_dont, /* complain_on_overflow */ | |
506 | bfd_elf_generic_reloc, /* special_function */ | |
507 | "R_MICROBLAZE_TLSGOTTPREL32", /* name */ | |
508 | FALSE, /* partial_inplace */ | |
509 | 0, /* src_mask */ | |
510 | 0x0000ffff, /* dst_mask */ | |
511 | FALSE), /* pcrel_offset */ | |
512 | ||
513 | /* Computes a tp-relative displacement, the difference between the value of | |
514 | sym+add and the value of the thread pointer (r13). */ | |
515 | HOWTO (R_MICROBLAZE_TLSTPREL32, | |
516 | 0, /* rightshift */ | |
517 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
518 | 32, /* bitsize */ | |
519 | FALSE, /* pc_relative */ | |
520 | 0, /* bitpos */ | |
521 | complain_overflow_dont, /* complain_on_overflow */ | |
522 | bfd_elf_generic_reloc, /* special_function */ | |
523 | "R_MICROBLAZE_TLSTPREL32", /* name */ | |
524 | FALSE, /* partial_inplace */ | |
525 | 0, /* src_mask */ | |
526 | 0x0000ffff, /* dst_mask */ | |
527 | FALSE), /* pcrel_offset */ | |
528 | ||
7ba29e2a NC |
529 | }; |
530 | ||
531 | #ifndef NUM_ELEM | |
532 | #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0]) | |
533 | #endif | |
534 | \f | |
535 | /* Initialize the microblaze_elf_howto_table, so that linear accesses can be done. */ | |
536 | ||
537 | static void | |
538 | microblaze_elf_howto_init (void) | |
539 | { | |
540 | unsigned int i; | |
541 | ||
542 | for (i = NUM_ELEM (microblaze_elf_howto_raw); i--;) | |
543 | { | |
544 | unsigned int type; | |
545 | ||
546 | type = microblaze_elf_howto_raw[i].type; | |
547 | ||
548 | BFD_ASSERT (type < NUM_ELEM (microblaze_elf_howto_table)); | |
549 | ||
550 | microblaze_elf_howto_table [type] = & microblaze_elf_howto_raw [i]; | |
551 | } | |
552 | } | |
553 | \f | |
554 | static reloc_howto_type * | |
555 | microblaze_elf_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
556 | bfd_reloc_code_real_type code) | |
557 | { | |
558 | enum elf_microblaze_reloc_type microblaze_reloc = R_MICROBLAZE_NONE; | |
559 | ||
560 | switch (code) | |
561 | { | |
562 | case BFD_RELOC_NONE: | |
563 | microblaze_reloc = R_MICROBLAZE_NONE; | |
564 | break; | |
565 | case BFD_RELOC_MICROBLAZE_64_NONE: | |
566 | microblaze_reloc = R_MICROBLAZE_64_NONE; | |
567 | break; | |
568 | case BFD_RELOC_32: | |
569 | microblaze_reloc = R_MICROBLAZE_32; | |
570 | break; | |
571 | /* RVA is treated the same as 32 */ | |
572 | case BFD_RELOC_RVA: | |
573 | microblaze_reloc = R_MICROBLAZE_32; | |
574 | break; | |
575 | case BFD_RELOC_32_PCREL: | |
576 | microblaze_reloc = R_MICROBLAZE_32_PCREL; | |
577 | break; | |
578 | case BFD_RELOC_64_PCREL: | |
579 | microblaze_reloc = R_MICROBLAZE_64_PCREL; | |
580 | break; | |
581 | case BFD_RELOC_MICROBLAZE_32_LO_PCREL: | |
582 | microblaze_reloc = R_MICROBLAZE_32_PCREL_LO; | |
583 | break; | |
584 | case BFD_RELOC_64: | |
585 | microblaze_reloc = R_MICROBLAZE_64; | |
586 | break; | |
587 | case BFD_RELOC_MICROBLAZE_32_LO: | |
588 | microblaze_reloc = R_MICROBLAZE_32_LO; | |
589 | break; | |
590 | case BFD_RELOC_MICROBLAZE_32_ROSDA: | |
591 | microblaze_reloc = R_MICROBLAZE_SRO32; | |
592 | break; | |
593 | case BFD_RELOC_MICROBLAZE_32_RWSDA: | |
594 | microblaze_reloc = R_MICROBLAZE_SRW32; | |
595 | break; | |
596 | case BFD_RELOC_MICROBLAZE_32_SYM_OP_SYM: | |
597 | microblaze_reloc = R_MICROBLAZE_32_SYM_OP_SYM; | |
598 | break; | |
599 | case BFD_RELOC_VTABLE_INHERIT: | |
600 | microblaze_reloc = R_MICROBLAZE_GNU_VTINHERIT; | |
601 | break; | |
602 | case BFD_RELOC_VTABLE_ENTRY: | |
603 | microblaze_reloc = R_MICROBLAZE_GNU_VTENTRY; | |
604 | break; | |
605 | case BFD_RELOC_MICROBLAZE_64_GOTPC: | |
606 | microblaze_reloc = R_MICROBLAZE_GOTPC_64; | |
607 | break; | |
608 | case BFD_RELOC_MICROBLAZE_64_GOT: | |
609 | microblaze_reloc = R_MICROBLAZE_GOT_64; | |
610 | break; | |
3f0a5f17 ME |
611 | case BFD_RELOC_MICROBLAZE_64_TEXTPCREL: |
612 | microblaze_reloc = R_MICROBLAZE_TEXTPCREL_64; | |
613 | break; | |
614 | case BFD_RELOC_MICROBLAZE_64_TEXTREL: | |
615 | microblaze_reloc = R_MICROBLAZE_TEXTREL_64; | |
616 | break; | |
7ba29e2a NC |
617 | case BFD_RELOC_MICROBLAZE_64_PLT: |
618 | microblaze_reloc = R_MICROBLAZE_PLT_64; | |
619 | break; | |
620 | case BFD_RELOC_MICROBLAZE_64_GOTOFF: | |
621 | microblaze_reloc = R_MICROBLAZE_GOTOFF_64; | |
622 | break; | |
623 | case BFD_RELOC_MICROBLAZE_32_GOTOFF: | |
624 | microblaze_reloc = R_MICROBLAZE_GOTOFF_32; | |
625 | break; | |
69b06cc8 ME |
626 | case BFD_RELOC_MICROBLAZE_64_TLSGD: |
627 | microblaze_reloc = R_MICROBLAZE_TLSGD; | |
628 | break; | |
629 | case BFD_RELOC_MICROBLAZE_64_TLSLD: | |
630 | microblaze_reloc = R_MICROBLAZE_TLSLD; | |
631 | break; | |
632 | case BFD_RELOC_MICROBLAZE_32_TLSDTPREL: | |
633 | microblaze_reloc = R_MICROBLAZE_TLSDTPREL32; | |
634 | break; | |
635 | case BFD_RELOC_MICROBLAZE_64_TLSDTPREL: | |
636 | microblaze_reloc = R_MICROBLAZE_TLSDTPREL64; | |
637 | break; | |
638 | case BFD_RELOC_MICROBLAZE_32_TLSDTPMOD: | |
639 | microblaze_reloc = R_MICROBLAZE_TLSDTPMOD32; | |
640 | break; | |
641 | case BFD_RELOC_MICROBLAZE_64_TLSGOTTPREL: | |
642 | microblaze_reloc = R_MICROBLAZE_TLSGOTTPREL32; | |
643 | break; | |
644 | case BFD_RELOC_MICROBLAZE_64_TLSTPREL: | |
645 | microblaze_reloc = R_MICROBLAZE_TLSTPREL32; | |
646 | break; | |
7ba29e2a NC |
647 | case BFD_RELOC_MICROBLAZE_COPY: |
648 | microblaze_reloc = R_MICROBLAZE_COPY; | |
649 | break; | |
650 | default: | |
651 | return (reloc_howto_type *) NULL; | |
652 | } | |
653 | ||
654 | if (!microblaze_elf_howto_table [R_MICROBLAZE_32]) | |
655 | /* Initialize howto table if needed. */ | |
656 | microblaze_elf_howto_init (); | |
657 | ||
658 | return microblaze_elf_howto_table [(int) microblaze_reloc]; | |
659 | }; | |
660 | ||
661 | static reloc_howto_type * | |
662 | microblaze_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
663 | const char *r_name) | |
664 | { | |
665 | unsigned int i; | |
666 | ||
667 | for (i = 0; i < NUM_ELEM (microblaze_elf_howto_raw); i++) | |
668 | if (microblaze_elf_howto_raw[i].name != NULL | |
669 | && strcasecmp (microblaze_elf_howto_raw[i].name, r_name) == 0) | |
670 | return µblaze_elf_howto_raw[i]; | |
671 | ||
672 | return NULL; | |
673 | } | |
674 | ||
675 | /* Set the howto pointer for a RCE ELF reloc. */ | |
676 | ||
f3185997 | 677 | static bfd_boolean |
0aa13fee | 678 | microblaze_elf_info_to_howto (bfd * abfd, |
7ba29e2a NC |
679 | arelent * cache_ptr, |
680 | Elf_Internal_Rela * dst) | |
681 | { | |
cd21f5da NC |
682 | unsigned int r_type; |
683 | ||
7ba29e2a NC |
684 | if (!microblaze_elf_howto_table [R_MICROBLAZE_32]) |
685 | /* Initialize howto table if needed. */ | |
686 | microblaze_elf_howto_init (); | |
687 | ||
cd21f5da NC |
688 | r_type = ELF32_R_TYPE (dst->r_info); |
689 | if (r_type >= R_MICROBLAZE_max) | |
690 | { | |
695344c0 | 691 | /* xgettext:c-format */ |
0aa13fee | 692 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 693 | abfd, r_type); |
cd21f5da | 694 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 695 | return FALSE; |
cd21f5da | 696 | } |
7ba29e2a | 697 | |
cd21f5da | 698 | cache_ptr->howto = microblaze_elf_howto_table [r_type]; |
f3185997 | 699 | return TRUE; |
7ba29e2a NC |
700 | } |
701 | ||
702 | /* Microblaze ELF local labels start with 'L.' or '$L', not '.L'. */ | |
703 | ||
704 | static bfd_boolean | |
705 | microblaze_elf_is_local_label_name (bfd *abfd, const char *name) | |
706 | { | |
707 | if (name[0] == 'L' && name[1] == '.') | |
708 | return TRUE; | |
709 | ||
710 | if (name[0] == '$' && name[1] == 'L') | |
711 | return TRUE; | |
712 | ||
713 | /* With gcc, the labels go back to starting with '.', so we accept | |
714 | the generic ELF local label syntax as well. */ | |
715 | return _bfd_elf_is_local_label_name (abfd, name); | |
716 | } | |
717 | ||
7ba29e2a NC |
718 | /* ELF linker hash entry. */ |
719 | ||
720 | struct elf32_mb_link_hash_entry | |
721 | { | |
722 | struct elf_link_hash_entry elf; | |
723 | ||
69b06cc8 ME |
724 | /* TLS Reference Types for the symbol; Updated by check_relocs */ |
725 | #define TLS_GD 1 /* GD reloc. */ | |
726 | #define TLS_LD 2 /* LD reloc. */ | |
727 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
728 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
729 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
730 | unsigned char tls_mask; | |
731 | ||
7ba29e2a NC |
732 | }; |
733 | ||
69b06cc8 ME |
734 | #define IS_TLS_GD(x) (x == (TLS_TLS | TLS_GD)) |
735 | #define IS_TLS_LD(x) (x == (TLS_TLS | TLS_LD)) | |
736 | #define IS_TLS_DTPREL(x) (x == (TLS_TLS | TLS_DTPREL)) | |
737 | #define IS_TLS_NONE(x) (x == 0) | |
738 | ||
7ba29e2a NC |
739 | #define elf32_mb_hash_entry(ent) ((struct elf32_mb_link_hash_entry *)(ent)) |
740 | ||
741 | /* ELF linker hash table. */ | |
742 | ||
743 | struct elf32_mb_link_hash_table | |
744 | { | |
745 | struct elf_link_hash_table elf; | |
746 | ||
7ba29e2a NC |
747 | /* Small local sym to section mapping cache. */ |
748 | struct sym_cache sym_sec; | |
69b06cc8 ME |
749 | |
750 | /* TLS Local Dynamic GOT Entry */ | |
751 | union { | |
752 | bfd_signed_vma refcount; | |
753 | bfd_vma offset; | |
754 | } tlsld_got; | |
7ba29e2a NC |
755 | }; |
756 | ||
69b06cc8 ME |
757 | /* Nonzero if this section has TLS related relocations. */ |
758 | #define has_tls_reloc sec_flg0 | |
759 | ||
7ba29e2a NC |
760 | /* Get the ELF linker hash table from a link_info structure. */ |
761 | ||
762 | #define elf32_mb_hash_table(p) \ | |
4dfe6ac6 NC |
763 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
764 | == MICROBLAZE_ELF_DATA ? ((struct elf32_mb_link_hash_table *) ((p)->hash)) : NULL) | |
7ba29e2a NC |
765 | |
766 | /* Create an entry in a microblaze ELF linker hash table. */ | |
767 | ||
768 | static struct bfd_hash_entry * | |
769 | link_hash_newfunc (struct bfd_hash_entry *entry, | |
770 | struct bfd_hash_table *table, | |
771 | const char *string) | |
772 | { | |
773 | /* Allocate the structure if it has not already been allocated by a | |
774 | subclass. */ | |
775 | if (entry == NULL) | |
776 | { | |
777 | entry = bfd_hash_allocate (table, | |
778 | sizeof (struct elf32_mb_link_hash_entry)); | |
779 | if (entry == NULL) | |
780 | return entry; | |
781 | } | |
782 | ||
783 | /* Call the allocation method of the superclass. */ | |
784 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
785 | if (entry != NULL) | |
786 | { | |
787 | struct elf32_mb_link_hash_entry *eh; | |
788 | ||
789 | eh = (struct elf32_mb_link_hash_entry *) entry; | |
69b06cc8 | 790 | eh->tls_mask = 0; |
7ba29e2a NC |
791 | } |
792 | ||
793 | return entry; | |
794 | } | |
795 | ||
796 | /* Create a mb ELF linker hash table. */ | |
797 | ||
798 | static struct bfd_link_hash_table * | |
799 | microblaze_elf_link_hash_table_create (bfd *abfd) | |
800 | { | |
801 | struct elf32_mb_link_hash_table *ret; | |
986f0783 | 802 | size_t amt = sizeof (struct elf32_mb_link_hash_table); |
7ba29e2a NC |
803 | |
804 | ret = (struct elf32_mb_link_hash_table *) bfd_zmalloc (amt); | |
805 | if (ret == NULL) | |
806 | return NULL; | |
807 | ||
808 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, | |
4dfe6ac6 NC |
809 | sizeof (struct elf32_mb_link_hash_entry), |
810 | MICROBLAZE_ELF_DATA)) | |
7ba29e2a NC |
811 | { |
812 | free (ret); | |
813 | return NULL; | |
814 | } | |
815 | ||
816 | return &ret->elf.root; | |
817 | } | |
818 | \f | |
819 | /* Set the values of the small data pointers. */ | |
820 | ||
821 | static void | |
822 | microblaze_elf_final_sdp (struct bfd_link_info *info) | |
823 | { | |
824 | struct bfd_link_hash_entry *h; | |
825 | ||
826 | h = bfd_link_hash_lookup (info->hash, RO_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE); | |
827 | if (h != (struct bfd_link_hash_entry *) NULL | |
828 | && h->type == bfd_link_hash_defined) | |
829 | ro_small_data_pointer = (h->u.def.value | |
07d6d2b8 AM |
830 | + h->u.def.section->output_section->vma |
831 | + h->u.def.section->output_offset); | |
7ba29e2a NC |
832 | |
833 | h = bfd_link_hash_lookup (info->hash, RW_SDA_ANCHOR_NAME, FALSE, FALSE, TRUE); | |
834 | if (h != (struct bfd_link_hash_entry *) NULL | |
835 | && h->type == bfd_link_hash_defined) | |
836 | rw_small_data_pointer = (h->u.def.value | |
07d6d2b8 AM |
837 | + h->u.def.section->output_section->vma |
838 | + h->u.def.section->output_offset); | |
7ba29e2a NC |
839 | } |
840 | ||
69b06cc8 ME |
841 | static bfd_vma |
842 | dtprel_base (struct bfd_link_info *info) | |
843 | { | |
844 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
845 | if (elf_hash_table (info)->tls_sec == NULL) | |
846 | return 0; | |
847 | return elf_hash_table (info)->tls_sec->vma; | |
848 | } | |
849 | ||
850 | /* The size of the thread control block. */ | |
851 | #define TCB_SIZE 8 | |
852 | ||
853 | /* Output a simple dynamic relocation into SRELOC. */ | |
854 | ||
855 | static void | |
856 | microblaze_elf_output_dynamic_relocation (bfd *output_bfd, | |
857 | asection *sreloc, | |
858 | unsigned long reloc_index, | |
859 | unsigned long indx, | |
860 | int r_type, | |
861 | bfd_vma offset, | |
862 | bfd_vma addend) | |
863 | { | |
864 | ||
865 | Elf_Internal_Rela rel; | |
866 | ||
867 | rel.r_info = ELF32_R_INFO (indx, r_type); | |
868 | rel.r_offset = offset; | |
869 | rel.r_addend = addend; | |
870 | ||
871 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
07d6d2b8 | 872 | (sreloc->contents + reloc_index * sizeof (Elf32_External_Rela))); |
69b06cc8 ME |
873 | } |
874 | ||
7ba29e2a NC |
875 | /* This code is taken from elf32-m32r.c |
876 | There is some attempt to make this function usable for many architectures, | |
877 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
878 | if only to serve as a learning tool. | |
879 | ||
880 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
881 | to handle the relocations for a section. | |
882 | ||
883 | The relocs are always passed as Rela structures; if the section | |
884 | actually uses Rel structures, the r_addend field will always be | |
885 | zero. | |
886 | ||
887 | This function is responsible for adjust the section contents as | |
888 | necessary, and (if using Rela relocs and generating a | |
889 | relocatable output file) adjusting the reloc addend as | |
890 | necessary. | |
891 | ||
892 | This function does not have to worry about setting the reloc | |
893 | address or the reloc symbol index. | |
894 | ||
895 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
896 | ||
897 | LOCAL_SECTIONS is an array giving the section in the input file | |
898 | corresponding to the st_shndx field of each local symbol. | |
899 | ||
900 | The global hash table entry for the global symbols can be found | |
901 | via elf_sym_hashes (input_bfd). | |
902 | ||
903 | When generating relocatable output, this function must handle | |
904 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
905 | going to be the section symbol corresponding to the output | |
906 | section, which means that the addend must be adjusted | |
907 | accordingly. */ | |
908 | ||
909 | static bfd_boolean | |
910 | microblaze_elf_relocate_section (bfd *output_bfd, | |
07d6d2b8 AM |
911 | struct bfd_link_info *info, |
912 | bfd *input_bfd, | |
913 | asection *input_section, | |
914 | bfd_byte *contents, | |
915 | Elf_Internal_Rela *relocs, | |
916 | Elf_Internal_Sym *local_syms, | |
917 | asection **local_sections) | |
7ba29e2a NC |
918 | { |
919 | struct elf32_mb_link_hash_table *htab; | |
920 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
921 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
922 | Elf_Internal_Rela *rel, *relend; | |
f23200ad | 923 | int endian = (bfd_little_endian (output_bfd)) ? 0 : 2; |
7ba29e2a NC |
924 | /* Assume success. */ |
925 | bfd_boolean ret = TRUE; | |
926 | asection *sreloc; | |
927 | bfd_vma *local_got_offsets; | |
69b06cc8 | 928 | unsigned int tls_type; |
7ba29e2a NC |
929 | |
930 | if (!microblaze_elf_howto_table[R_MICROBLAZE_max-1]) | |
931 | microblaze_elf_howto_init (); | |
932 | ||
933 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
934 | if (htab == NULL) |
935 | return FALSE; | |
936 | ||
7ba29e2a NC |
937 | local_got_offsets = elf_local_got_offsets (input_bfd); |
938 | ||
939 | sreloc = elf_section_data (input_section)->sreloc; | |
940 | ||
941 | rel = relocs; | |
942 | relend = relocs + input_section->reloc_count; | |
943 | for (; rel < relend; rel++) | |
944 | { | |
945 | int r_type; | |
946 | reloc_howto_type *howto; | |
947 | unsigned long r_symndx; | |
948 | bfd_vma addend = rel->r_addend; | |
949 | bfd_vma offset = rel->r_offset; | |
950 | struct elf_link_hash_entry *h; | |
951 | Elf_Internal_Sym *sym; | |
952 | asection *sec; | |
953 | const char *sym_name; | |
954 | bfd_reloc_status_type r = bfd_reloc_ok; | |
955 | const char *errmsg = NULL; | |
956 | bfd_boolean unresolved_reloc = FALSE; | |
957 | ||
958 | h = NULL; | |
959 | r_type = ELF32_R_TYPE (rel->r_info); | |
69b06cc8 ME |
960 | tls_type = 0; |
961 | ||
7ba29e2a NC |
962 | if (r_type < 0 || r_type >= (int) R_MICROBLAZE_max) |
963 | { | |
695344c0 | 964 | /* xgettext:c-format */ |
0aa13fee | 965 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
dae82561 | 966 | input_bfd, (int) r_type); |
7ba29e2a NC |
967 | bfd_set_error (bfd_error_bad_value); |
968 | ret = FALSE; | |
969 | continue; | |
970 | } | |
971 | ||
972 | howto = microblaze_elf_howto_table[r_type]; | |
973 | r_symndx = ELF32_R_SYM (rel->r_info); | |
974 | ||
0e1862bb | 975 | if (bfd_link_relocatable (info)) |
7ba29e2a NC |
976 | { |
977 | /* This is a relocatable link. We don't have to change | |
978 | anything, unless the reloc is against a section symbol, | |
979 | in which case we have to adjust according to where the | |
980 | section symbol winds up in the output section. */ | |
981 | sec = NULL; | |
982 | if (r_symndx >= symtab_hdr->sh_info) | |
983 | /* External symbol. */ | |
984 | continue; | |
985 | ||
986 | /* Local symbol. */ | |
987 | sym = local_syms + r_symndx; | |
988 | sym_name = "<local symbol>"; | |
989 | /* STT_SECTION: symbol is associated with a section. */ | |
990 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
991 | /* Symbol isn't associated with a section. Nothing to do. */ | |
992 | continue; | |
993 | ||
994 | sec = local_sections[r_symndx]; | |
995 | addend += sec->output_offset + sym->st_value; | |
996 | #ifndef USE_REL | |
997 | /* This can't be done for USE_REL because it doesn't mean anything | |
998 | and elf_link_input_bfd asserts this stays zero. */ | |
999 | /* rel->r_addend = addend; */ | |
1000 | #endif | |
1001 | ||
1002 | #ifndef USE_REL | |
1003 | /* Addends are stored with relocs. We're done. */ | |
1004 | continue; | |
1005 | #else /* USE_REL */ | |
1006 | /* If partial_inplace, we need to store any additional addend | |
1007 | back in the section. */ | |
1008 | if (!howto->partial_inplace) | |
1009 | continue; | |
1010 | /* ??? Here is a nice place to call a special_function like handler. */ | |
1011 | r = _bfd_relocate_contents (howto, input_bfd, addend, | |
1012 | contents + offset); | |
1013 | #endif /* USE_REL */ | |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | bfd_vma relocation; | |
112fef40 | 1018 | bfd_boolean resolved_to_zero; |
7ba29e2a NC |
1019 | |
1020 | /* This is a final link. */ | |
1021 | sym = NULL; | |
1022 | sec = NULL; | |
1023 | unresolved_reloc = FALSE; | |
1024 | ||
1025 | if (r_symndx < symtab_hdr->sh_info) | |
1026 | { | |
1027 | /* Local symbol. */ | |
1028 | sym = local_syms + r_symndx; | |
1029 | sec = local_sections[r_symndx]; | |
1030 | if (sec == 0) | |
1031 | continue; | |
1032 | sym_name = "<local symbol>"; | |
1033 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1034 | /* r_addend may have changed if the reference section was | |
1035 | a merge section. */ | |
1036 | addend = rel->r_addend; | |
1037 | } | |
1038 | else | |
1039 | { | |
1040 | /* External symbol. */ | |
1041 | bfd_boolean warned ATTRIBUTE_UNUSED; | |
62d887d4 | 1042 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
7ba29e2a NC |
1043 | |
1044 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1045 | r_symndx, symtab_hdr, sym_hashes, | |
1046 | h, sec, relocation, | |
62d887d4 | 1047 | unresolved_reloc, warned, ignored); |
7ba29e2a NC |
1048 | sym_name = h->root.root.string; |
1049 | } | |
1050 | ||
1051 | /* Sanity check the address. */ | |
e57278ef | 1052 | if (offset > bfd_get_section_limit (input_bfd, input_section)) |
7ba29e2a NC |
1053 | { |
1054 | r = bfd_reloc_outofrange; | |
1055 | goto check_reloc; | |
1056 | } | |
1057 | ||
112fef40 L |
1058 | resolved_to_zero = (h != NULL |
1059 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
1060 | ||
7ba29e2a NC |
1061 | switch ((int) r_type) |
1062 | { | |
1063 | case (int) R_MICROBLAZE_SRO32 : | |
1064 | { | |
1065 | const char *name; | |
1066 | ||
1067 | /* Only relocate if the symbol is defined. */ | |
1068 | if (sec) | |
1069 | { | |
fd361982 | 1070 | name = bfd_section_name (sec); |
7ba29e2a NC |
1071 | |
1072 | if (strcmp (name, ".sdata2") == 0 | |
1073 | || strcmp (name, ".sbss2") == 0) | |
1074 | { | |
1075 | if (ro_small_data_pointer == 0) | |
1076 | microblaze_elf_final_sdp (info); | |
1077 | if (ro_small_data_pointer == 0) | |
1078 | { | |
1079 | ret = FALSE; | |
1080 | r = bfd_reloc_undefined; | |
1081 | goto check_reloc; | |
1082 | } | |
1083 | ||
1084 | /* At this point `relocation' contains the object's | |
1085 | address. */ | |
1086 | relocation -= ro_small_data_pointer; | |
1087 | /* Now it contains the offset from _SDA2_BASE_. */ | |
1088 | r = _bfd_final_link_relocate (howto, input_bfd, | |
1089 | input_section, | |
1090 | contents, offset, | |
1091 | relocation, addend); | |
1092 | } | |
1093 | else | |
1094 | { | |
4eca0228 | 1095 | _bfd_error_handler |
695344c0 | 1096 | /* xgettext:c-format */ |
38f14ab8 | 1097 | (_("%pB: the target (%s) of an %s relocation" |
871b3ab2 | 1098 | " is in the wrong section (%pA)"), |
dae82561 | 1099 | input_bfd, |
4eca0228 AM |
1100 | sym_name, |
1101 | microblaze_elf_howto_table[(int) r_type]->name, | |
dae82561 | 1102 | sec); |
7ba29e2a NC |
1103 | /*bfd_set_error (bfd_error_bad_value); ??? why? */ |
1104 | ret = FALSE; | |
1105 | continue; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | break; | |
1110 | ||
1111 | case (int) R_MICROBLAZE_SRW32 : | |
1112 | { | |
1113 | const char *name; | |
1114 | ||
1115 | /* Only relocate if the symbol is defined. */ | |
1116 | if (sec) | |
1117 | { | |
fd361982 | 1118 | name = bfd_section_name (sec); |
7ba29e2a NC |
1119 | |
1120 | if (strcmp (name, ".sdata") == 0 | |
1121 | || strcmp (name, ".sbss") == 0) | |
1122 | { | |
1123 | if (rw_small_data_pointer == 0) | |
1124 | microblaze_elf_final_sdp (info); | |
1125 | if (rw_small_data_pointer == 0) | |
1126 | { | |
1127 | ret = FALSE; | |
1128 | r = bfd_reloc_undefined; | |
1129 | goto check_reloc; | |
1130 | } | |
1131 | ||
1132 | /* At this point `relocation' contains the object's | |
1133 | address. */ | |
1134 | relocation -= rw_small_data_pointer; | |
1135 | /* Now it contains the offset from _SDA_BASE_. */ | |
1136 | r = _bfd_final_link_relocate (howto, input_bfd, | |
1137 | input_section, | |
1138 | contents, offset, | |
1139 | relocation, addend); | |
1140 | } | |
1141 | else | |
1142 | { | |
4eca0228 | 1143 | _bfd_error_handler |
695344c0 | 1144 | /* xgettext:c-format */ |
38f14ab8 | 1145 | (_("%pB: the target (%s) of an %s relocation" |
871b3ab2 | 1146 | " is in the wrong section (%pA)"), |
dae82561 | 1147 | input_bfd, |
4eca0228 AM |
1148 | sym_name, |
1149 | microblaze_elf_howto_table[(int) r_type]->name, | |
dae82561 | 1150 | sec); |
7ba29e2a NC |
1151 | /*bfd_set_error (bfd_error_bad_value); ??? why? */ |
1152 | ret = FALSE; | |
1153 | continue; | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | break; | |
1158 | ||
1159 | case (int) R_MICROBLAZE_32_SYM_OP_SYM: | |
1160 | break; /* Do nothing. */ | |
1161 | ||
1162 | case (int) R_MICROBLAZE_GOTPC_64: | |
ce558b89 AM |
1163 | relocation = (htab->elf.sgotplt->output_section->vma |
1164 | + htab->elf.sgotplt->output_offset); | |
7ba29e2a NC |
1165 | relocation -= (input_section->output_section->vma |
1166 | + input_section->output_offset | |
1167 | + offset + INST_WORD_SIZE); | |
1168 | relocation += addend; | |
1169 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, | |
07d6d2b8 | 1170 | contents + offset + endian); |
7ba29e2a | 1171 | bfd_put_16 (input_bfd, relocation & 0xffff, |
07d6d2b8 | 1172 | contents + offset + endian + INST_WORD_SIZE); |
7ba29e2a NC |
1173 | break; |
1174 | ||
3f0a5f17 ME |
1175 | case (int) R_MICROBLAZE_TEXTPCREL_64: |
1176 | relocation = input_section->output_section->vma; | |
1177 | relocation -= (input_section->output_section->vma | |
1178 | + input_section->output_offset | |
1179 | + offset + INST_WORD_SIZE); | |
1180 | relocation += addend; | |
1181 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, | |
1182 | contents + offset + endian); | |
1183 | bfd_put_16 (input_bfd, relocation & 0xffff, | |
1184 | contents + offset + endian + INST_WORD_SIZE); | |
1185 | break; | |
1186 | ||
7ba29e2a NC |
1187 | case (int) R_MICROBLAZE_PLT_64: |
1188 | { | |
1189 | bfd_vma immediate; | |
ce558b89 | 1190 | if (htab->elf.splt != NULL && h != NULL |
7ba29e2a NC |
1191 | && h->plt.offset != (bfd_vma) -1) |
1192 | { | |
ce558b89 AM |
1193 | relocation = (htab->elf.splt->output_section->vma |
1194 | + htab->elf.splt->output_offset | |
7ba29e2a NC |
1195 | + h->plt.offset); |
1196 | unresolved_reloc = FALSE; | |
1197 | immediate = relocation - (input_section->output_section->vma | |
1198 | + input_section->output_offset | |
1199 | + offset + INST_WORD_SIZE); | |
1200 | bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff, | |
07d6d2b8 | 1201 | contents + offset + endian); |
7ba29e2a | 1202 | bfd_put_16 (input_bfd, immediate & 0xffff, |
07d6d2b8 | 1203 | contents + offset + endian + INST_WORD_SIZE); |
7ba29e2a NC |
1204 | } |
1205 | else | |
1206 | { | |
1207 | relocation -= (input_section->output_section->vma | |
1208 | + input_section->output_offset | |
1209 | + offset + INST_WORD_SIZE); | |
1210 | immediate = relocation; | |
1211 | bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff, | |
07d6d2b8 | 1212 | contents + offset + endian); |
7ba29e2a | 1213 | bfd_put_16 (input_bfd, immediate & 0xffff, |
07d6d2b8 | 1214 | contents + offset + endian + INST_WORD_SIZE); |
7ba29e2a NC |
1215 | } |
1216 | break; | |
1217 | } | |
1218 | ||
69b06cc8 ME |
1219 | case (int) R_MICROBLAZE_TLSGD: |
1220 | tls_type = (TLS_TLS | TLS_GD); | |
1221 | goto dogot; | |
1222 | case (int) R_MICROBLAZE_TLSLD: | |
1223 | tls_type = (TLS_TLS | TLS_LD); | |
1a0670f3 | 1224 | /* Fall through. */ |
69b06cc8 | 1225 | dogot: |
7ba29e2a NC |
1226 | case (int) R_MICROBLAZE_GOT_64: |
1227 | { | |
69b06cc8 ME |
1228 | bfd_vma *offp; |
1229 | bfd_vma off, off2; | |
1230 | unsigned long indx; | |
1231 | bfd_vma static_value; | |
1232 | ||
1233 | bfd_boolean need_relocs = FALSE; | |
ce558b89 | 1234 | if (htab->elf.sgot == NULL) |
7ba29e2a | 1235 | abort (); |
69b06cc8 ME |
1236 | |
1237 | indx = 0; | |
1238 | offp = NULL; | |
1239 | ||
1240 | /* 1. Identify GOT Offset; | |
1241 | 2. Compute Static Values | |
1242 | 3. Process Module Id, Process Offset | |
1243 | 4. Fixup Relocation with GOT offset value. */ | |
1244 | ||
1245 | /* 1. Determine GOT Offset to use : TLS_LD, global, local */ | |
1246 | if (IS_TLS_LD (tls_type)) | |
1247 | offp = &htab->tlsld_got.offset; | |
1248 | else if (h != NULL) | |
1249 | { | |
ce558b89 AM |
1250 | if (htab->elf.sgotplt != NULL |
1251 | && h->got.offset != (bfd_vma) -1) | |
1252 | offp = &h->got.offset; | |
69b06cc8 | 1253 | else |
ce558b89 | 1254 | abort (); |
69b06cc8 ME |
1255 | } |
1256 | else | |
7ba29e2a | 1257 | { |
7ba29e2a NC |
1258 | if (local_got_offsets == NULL) |
1259 | abort (); | |
69b06cc8 ME |
1260 | offp = &local_got_offsets[r_symndx]; |
1261 | } | |
1262 | ||
1263 | if (!offp) | |
1264 | abort (); | |
1265 | ||
1266 | off = (*offp) & ~1; | |
1267 | off2 = off; | |
1268 | ||
1269 | if (IS_TLS_LD(tls_type) || IS_TLS_GD(tls_type)) | |
1270 | off2 = off + 4; | |
1271 | ||
1272 | /* Symbol index to use for relocs */ | |
1273 | if (h != NULL) | |
1274 | { | |
1275 | bfd_boolean dyn = | |
1276 | elf_hash_table (info)->dynamic_sections_created; | |
1277 | ||
0e1862bb L |
1278 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
1279 | bfd_link_pic (info), | |
1280 | h) | |
1281 | && (!bfd_link_pic (info) | |
1282 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
69b06cc8 ME |
1283 | indx = h->dynindx; |
1284 | } | |
7ba29e2a | 1285 | |
69b06cc8 | 1286 | /* Need to generate relocs ? */ |
0e1862bb | 1287 | if ((bfd_link_pic (info) || indx != 0) |
69b06cc8 | 1288 | && (h == NULL |
112fef40 L |
1289 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1290 | && !resolved_to_zero) | |
69b06cc8 ME |
1291 | || h->root.type != bfd_link_hash_undefweak)) |
1292 | need_relocs = TRUE; | |
1293 | ||
1294 | /* 2. Compute/Emit Static value of r-expression */ | |
1295 | static_value = relocation + addend; | |
1296 | ||
1297 | /* 3. Process module-id and offset */ | |
1298 | if (! ((*offp) & 1) ) | |
1299 | { | |
1300 | bfd_vma got_offset; | |
1301 | ||
ce558b89 AM |
1302 | got_offset = (htab->elf.sgot->output_section->vma |
1303 | + htab->elf.sgot->output_offset | |
69b06cc8 ME |
1304 | + off); |
1305 | ||
1306 | /* Process module-id */ | |
1307 | if (IS_TLS_LD(tls_type)) | |
1308 | { | |
0e1862bb | 1309 | if (! bfd_link_pic (info)) |
ce558b89 AM |
1310 | bfd_put_32 (output_bfd, 1, |
1311 | htab->elf.sgot->contents + off); | |
69b06cc8 | 1312 | else |
ce558b89 AM |
1313 | microblaze_elf_output_dynamic_relocation |
1314 | (output_bfd, | |
1315 | htab->elf.srelgot, | |
1316 | htab->elf.srelgot->reloc_count++, | |
1317 | /* symindex= */ 0, R_MICROBLAZE_TLSDTPMOD32, | |
1318 | got_offset, 0); | |
7ba29e2a | 1319 | } |
69b06cc8 ME |
1320 | else if (IS_TLS_GD(tls_type)) |
1321 | { | |
07d6d2b8 | 1322 | if (! need_relocs) |
ce558b89 AM |
1323 | bfd_put_32 (output_bfd, 1, |
1324 | htab->elf.sgot->contents + off); | |
07d6d2b8 | 1325 | else |
ce558b89 AM |
1326 | microblaze_elf_output_dynamic_relocation |
1327 | (output_bfd, | |
1328 | htab->elf.srelgot, | |
1329 | htab->elf.srelgot->reloc_count++, | |
1330 | /* symindex= */ indx, R_MICROBLAZE_TLSDTPMOD32, | |
1331 | got_offset, indx ? 0 : static_value); | |
69b06cc8 ME |
1332 | } |
1333 | ||
1334 | /* Process Offset */ | |
ce558b89 | 1335 | if (htab->elf.srelgot == NULL) |
69b06cc8 ME |
1336 | abort (); |
1337 | ||
ce558b89 AM |
1338 | got_offset = (htab->elf.sgot->output_section->vma |
1339 | + htab->elf.sgot->output_offset | |
69b06cc8 ME |
1340 | + off2); |
1341 | if (IS_TLS_LD(tls_type)) | |
1342 | { | |
07d6d2b8 AM |
1343 | /* For LD, offset should be 0 */ |
1344 | *offp |= 1; | |
1345 | bfd_put_32 (output_bfd, 0, | |
ce558b89 | 1346 | htab->elf.sgot->contents + off2); |
69b06cc8 ME |
1347 | } |
1348 | else if (IS_TLS_GD(tls_type)) | |
7ba29e2a | 1349 | { |
07d6d2b8 AM |
1350 | *offp |= 1; |
1351 | static_value -= dtprel_base(info); | |
1352 | if (need_relocs) | |
ce558b89 AM |
1353 | microblaze_elf_output_dynamic_relocation |
1354 | (output_bfd, | |
1355 | htab->elf.srelgot, | |
1356 | htab->elf.srelgot->reloc_count++, | |
1357 | /* symindex= */ indx, R_MICROBLAZE_TLSDTPREL32, | |
1358 | got_offset, indx ? 0 : static_value); | |
07d6d2b8 | 1359 | else |
ce558b89 AM |
1360 | bfd_put_32 (output_bfd, static_value, |
1361 | htab->elf.sgot->contents + off2); | |
7ba29e2a NC |
1362 | } |
1363 | else | |
69b06cc8 | 1364 | { |
ce558b89 AM |
1365 | bfd_put_32 (output_bfd, static_value, |
1366 | htab->elf.sgot->contents + off2); | |
69b06cc8 | 1367 | |
ce558b89 AM |
1368 | /* Relocs for dyn symbols generated by |
1369 | finish_dynamic_symbols */ | |
1370 | if (bfd_link_pic (info) && h == NULL) | |
1371 | { | |
1372 | *offp |= 1; | |
1373 | microblaze_elf_output_dynamic_relocation | |
1374 | (output_bfd, | |
1375 | htab->elf.srelgot, | |
1376 | htab->elf.srelgot->reloc_count++, | |
1377 | /* symindex= */ indx, R_MICROBLAZE_REL, | |
1378 | got_offset, static_value); | |
1379 | } | |
69b06cc8 | 1380 | } |
7ba29e2a | 1381 | } |
69b06cc8 ME |
1382 | |
1383 | /* 4. Fixup Relocation with GOT offset value | |
1384 | Compute relative address of GOT entry for applying | |
1385 | the current relocation */ | |
ce558b89 AM |
1386 | relocation = htab->elf.sgot->output_section->vma |
1387 | + htab->elf.sgot->output_offset | |
69b06cc8 | 1388 | + off |
ce558b89 AM |
1389 | - htab->elf.sgotplt->output_section->vma |
1390 | - htab->elf.sgotplt->output_offset; | |
69b06cc8 ME |
1391 | |
1392 | /* Apply Current Relocation */ | |
7ba29e2a | 1393 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, |
07d6d2b8 | 1394 | contents + offset + endian); |
7ba29e2a | 1395 | bfd_put_16 (input_bfd, relocation & 0xffff, |
07d6d2b8 | 1396 | contents + offset + endian + INST_WORD_SIZE); |
69b06cc8 ME |
1397 | |
1398 | unresolved_reloc = FALSE; | |
7ba29e2a NC |
1399 | break; |
1400 | } | |
1401 | ||
1402 | case (int) R_MICROBLAZE_GOTOFF_64: | |
1403 | { | |
1404 | bfd_vma immediate; | |
1405 | unsigned short lo, high; | |
1406 | relocation += addend; | |
ce558b89 AM |
1407 | relocation -= (htab->elf.sgotplt->output_section->vma |
1408 | + htab->elf.sgotplt->output_offset); | |
7ba29e2a NC |
1409 | /* Write this value into correct location. */ |
1410 | immediate = relocation; | |
1411 | lo = immediate & 0x0000ffff; | |
1412 | high = (immediate >> 16) & 0x0000ffff; | |
f23200ad | 1413 | bfd_put_16 (input_bfd, high, contents + offset + endian); |
ce558b89 AM |
1414 | bfd_put_16 (input_bfd, lo, |
1415 | contents + offset + INST_WORD_SIZE + endian); | |
7ba29e2a NC |
1416 | break; |
1417 | } | |
1418 | ||
1419 | case (int) R_MICROBLAZE_GOTOFF_32: | |
1420 | { | |
1421 | relocation += addend; | |
ce558b89 AM |
1422 | relocation -= (htab->elf.sgotplt->output_section->vma |
1423 | + htab->elf.sgotplt->output_offset); | |
7ba29e2a NC |
1424 | /* Write this value into correct location. */ |
1425 | bfd_put_32 (input_bfd, relocation, contents + offset); | |
1426 | break; | |
1427 | } | |
1428 | ||
69b06cc8 ME |
1429 | case (int) R_MICROBLAZE_TLSDTPREL64: |
1430 | relocation += addend; | |
1431 | relocation -= dtprel_base(info); | |
1432 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, | |
1433 | contents + offset + 2); | |
1434 | bfd_put_16 (input_bfd, relocation & 0xffff, | |
1435 | contents + offset + 2 + INST_WORD_SIZE); | |
1436 | break; | |
3f0a5f17 ME |
1437 | case (int) R_MICROBLAZE_TEXTREL_64: |
1438 | case (int) R_MICROBLAZE_TEXTREL_32_LO: | |
7ba29e2a NC |
1439 | case (int) R_MICROBLAZE_64_PCREL : |
1440 | case (int) R_MICROBLAZE_64: | |
1441 | case (int) R_MICROBLAZE_32: | |
1442 | { | |
cf35638d | 1443 | /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols |
7ba29e2a NC |
1444 | from removed linkonce sections, or sections discarded by |
1445 | a linker script. */ | |
cf35638d | 1446 | if (r_symndx == STN_UNDEF || (input_section->flags & SEC_ALLOC) == 0) |
7ba29e2a NC |
1447 | { |
1448 | relocation += addend; | |
1449 | if (r_type == R_MICROBLAZE_32) | |
1450 | bfd_put_32 (input_bfd, relocation, contents + offset); | |
1451 | else | |
1452 | { | |
1453 | if (r_type == R_MICROBLAZE_64_PCREL) | |
1454 | relocation -= (input_section->output_section->vma | |
1455 | + input_section->output_offset | |
1456 | + offset + INST_WORD_SIZE); | |
3f0a5f17 ME |
1457 | else if (r_type == R_MICROBLAZE_TEXTREL_64 |
1458 | || r_type == R_MICROBLAZE_TEXTREL_32_LO) | |
1459 | relocation -= input_section->output_section->vma; | |
1460 | ||
1461 | if (r_type == R_MICROBLAZE_TEXTREL_32_LO) | |
1462 | bfd_put_16 (input_bfd, relocation & 0xffff, | |
1463 | contents + offset + endian); | |
1464 | ||
1465 | else | |
1466 | { | |
1467 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, | |
07d6d2b8 | 1468 | contents + offset + endian); |
3f0a5f17 | 1469 | bfd_put_16 (input_bfd, relocation & 0xffff, |
07d6d2b8 | 1470 | contents + offset + endian + INST_WORD_SIZE); |
7ba29e2a | 1471 | } |
3f0a5f17 | 1472 | } |
7ba29e2a NC |
1473 | break; |
1474 | } | |
1475 | ||
0e1862bb | 1476 | if ((bfd_link_pic (info) |
7ba29e2a | 1477 | && (h == NULL |
112fef40 L |
1478 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1479 | && !resolved_to_zero) | |
7ba29e2a NC |
1480 | || h->root.type != bfd_link_hash_undefweak) |
1481 | && (!howto->pc_relative | |
1482 | || (h != NULL | |
1483 | && h->dynindx != -1 | |
1484 | && (!info->symbolic | |
1485 | || !h->def_regular)))) | |
0e1862bb | 1486 | || (!bfd_link_pic (info) |
7ba29e2a NC |
1487 | && h != NULL |
1488 | && h->dynindx != -1 | |
1489 | && !h->non_got_ref | |
1490 | && ((h->def_dynamic | |
1491 | && !h->def_regular) | |
1492 | || h->root.type == bfd_link_hash_undefweak | |
1493 | || h->root.type == bfd_link_hash_undefined))) | |
1494 | { | |
1495 | Elf_Internal_Rela outrel; | |
1496 | bfd_byte *loc; | |
c7e2358a | 1497 | bfd_boolean skip; |
7ba29e2a NC |
1498 | |
1499 | /* When generating a shared object, these relocations | |
1500 | are copied into the output file to be resolved at run | |
1501 | time. */ | |
1502 | ||
1503 | BFD_ASSERT (sreloc != NULL); | |
1504 | ||
1505 | skip = FALSE; | |
1506 | ||
1507 | outrel.r_offset = | |
1508 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1509 | rel->r_offset); | |
1510 | if (outrel.r_offset == (bfd_vma) -1) | |
1511 | skip = TRUE; | |
1512 | else if (outrel.r_offset == (bfd_vma) -2) | |
c7e2358a | 1513 | skip = TRUE; |
7ba29e2a NC |
1514 | outrel.r_offset += (input_section->output_section->vma |
1515 | + input_section->output_offset); | |
1516 | ||
1517 | if (skip) | |
1518 | memset (&outrel, 0, sizeof outrel); | |
1519 | /* h->dynindx may be -1 if the symbol was marked to | |
1520 | become local. */ | |
1521 | else if (h != NULL | |
1522 | && ((! info->symbolic && h->dynindx != -1) | |
1523 | || !h->def_regular)) | |
1524 | { | |
1525 | BFD_ASSERT (h->dynindx != -1); | |
1526 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
1527 | outrel.r_addend = addend; | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | if (r_type == R_MICROBLAZE_32) | |
1532 | { | |
1533 | outrel.r_info = ELF32_R_INFO (0, R_MICROBLAZE_REL); | |
1534 | outrel.r_addend = relocation + addend; | |
1535 | } | |
1536 | else | |
1537 | { | |
1538 | BFD_FAIL (); | |
4eca0228 | 1539 | _bfd_error_handler |
871b3ab2 | 1540 | (_("%pB: probably compiled without -fPIC?"), |
7ba29e2a NC |
1541 | input_bfd); |
1542 | bfd_set_error (bfd_error_bad_value); | |
1543 | return FALSE; | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | loc = sreloc->contents; | |
1548 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1549 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1550 | break; | |
1551 | } | |
1552 | else | |
1553 | { | |
1554 | relocation += addend; | |
1555 | if (r_type == R_MICROBLAZE_32) | |
1556 | bfd_put_32 (input_bfd, relocation, contents + offset); | |
1557 | else | |
1558 | { | |
1559 | if (r_type == R_MICROBLAZE_64_PCREL) | |
1560 | relocation -= (input_section->output_section->vma | |
1561 | + input_section->output_offset | |
1562 | + offset + INST_WORD_SIZE); | |
3f0a5f17 ME |
1563 | else if (r_type == R_MICROBLAZE_TEXTREL_64 |
1564 | || r_type == R_MICROBLAZE_TEXTREL_32_LO) | |
1565 | relocation -= input_section->output_section->vma; | |
1566 | ||
1567 | if (r_type == R_MICROBLAZE_TEXTREL_32_LO) | |
1568 | { | |
1569 | bfd_put_16 (input_bfd, relocation & 0xffff, | |
1570 | contents + offset + endian); | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, | |
1575 | contents + offset + endian); | |
1576 | bfd_put_16 (input_bfd, relocation & 0xffff, | |
1577 | contents + offset + endian | |
1578 | + INST_WORD_SIZE); | |
1579 | } | |
1580 | } | |
7ba29e2a NC |
1581 | break; |
1582 | } | |
1583 | } | |
1584 | ||
1585 | default : | |
1586 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1587 | contents, offset, | |
1588 | relocation, addend); | |
1589 | break; | |
1590 | } | |
1591 | } | |
1592 | ||
1593 | check_reloc: | |
1594 | ||
1595 | if (r != bfd_reloc_ok) | |
1596 | { | |
1597 | /* FIXME: This should be generic enough to go in a utility. */ | |
1598 | const char *name; | |
1599 | ||
1600 | if (h != NULL) | |
1601 | name = h->root.root.string; | |
1602 | else | |
1603 | { | |
1604 | name = (bfd_elf_string_from_elf_section | |
1605 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1606 | if (name == NULL || *name == '\0') | |
fd361982 | 1607 | name = bfd_section_name (sec); |
7ba29e2a NC |
1608 | } |
1609 | ||
1610 | if (errmsg != NULL) | |
1611 | goto common_error; | |
1612 | ||
1613 | switch (r) | |
1614 | { | |
1615 | case bfd_reloc_overflow: | |
1a72702b AM |
1616 | (*info->callbacks->reloc_overflow) |
1617 | (info, (h ? &h->root : NULL), name, howto->name, | |
1618 | (bfd_vma) 0, input_bfd, input_section, offset); | |
7ba29e2a NC |
1619 | break; |
1620 | ||
1621 | case bfd_reloc_undefined: | |
1a72702b AM |
1622 | (*info->callbacks->undefined_symbol) |
1623 | (info, name, input_bfd, input_section, offset, TRUE); | |
7ba29e2a NC |
1624 | break; |
1625 | ||
1626 | case bfd_reloc_outofrange: | |
1627 | errmsg = _("internal error: out of range error"); | |
1628 | goto common_error; | |
1629 | ||
1630 | case bfd_reloc_notsupported: | |
1631 | errmsg = _("internal error: unsupported relocation error"); | |
1632 | goto common_error; | |
1633 | ||
1634 | case bfd_reloc_dangerous: | |
1635 | errmsg = _("internal error: dangerous error"); | |
1636 | goto common_error; | |
1637 | ||
1638 | default: | |
1639 | errmsg = _("internal error: unknown error"); | |
1640 | /* Fall through. */ | |
1641 | common_error: | |
1a72702b AM |
1642 | (*info->callbacks->warning) (info, errmsg, name, input_bfd, |
1643 | input_section, offset); | |
7ba29e2a NC |
1644 | break; |
1645 | } | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | return ret; | |
1650 | } | |
1651 | \f | |
1652 | /* Calculate fixup value for reference. */ | |
1653 | ||
1654 | static int | |
886e427f | 1655 | calc_fixup (bfd_vma start, bfd_vma size, asection *sec) |
7ba29e2a | 1656 | { |
886e427f | 1657 | bfd_vma end = start + size; |
7ba29e2a NC |
1658 | int i, fixup = 0; |
1659 | ||
1660 | if (sec == NULL || sec->relax == NULL) | |
1661 | return 0; | |
1662 | ||
1663 | /* Look for addr in relax table, total fixup value. */ | |
1664 | for (i = 0; i < sec->relax_count; i++) | |
1665 | { | |
886e427f | 1666 | if (end <= sec->relax[i].addr) |
07d6d2b8 | 1667 | break; |
886e427f | 1668 | if ((end != start) && (start > sec->relax[i].addr)) |
07d6d2b8 | 1669 | continue; |
7ba29e2a NC |
1670 | fixup += sec->relax[i].size; |
1671 | } | |
7ba29e2a NC |
1672 | return fixup; |
1673 | } | |
1674 | ||
f23200ad ME |
1675 | /* Read-modify-write into the bfd, an immediate value into appropriate fields of |
1676 | a 32-bit instruction. */ | |
1677 | static void | |
1678 | microblaze_bfd_write_imm_value_32 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val) | |
1679 | { | |
1680 | unsigned long instr = bfd_get_32 (abfd, bfd_addr); | |
1681 | instr &= ~0x0000ffff; | |
1682 | instr |= (val & 0x0000ffff); | |
1683 | bfd_put_32 (abfd, instr, bfd_addr); | |
1684 | } | |
1685 | ||
1686 | /* Read-modify-write into the bfd, an immediate value into appropriate fields of | |
1687 | two consecutive 32-bit instructions. */ | |
1688 | static void | |
1689 | microblaze_bfd_write_imm_value_64 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val) | |
1690 | { | |
1691 | unsigned long instr_hi; | |
1692 | unsigned long instr_lo; | |
1693 | ||
1694 | instr_hi = bfd_get_32 (abfd, bfd_addr); | |
1695 | instr_hi &= ~0x0000ffff; | |
1696 | instr_hi |= ((val >> 16) & 0x0000ffff); | |
1697 | bfd_put_32 (abfd, instr_hi, bfd_addr); | |
1698 | ||
1699 | instr_lo = bfd_get_32 (abfd, bfd_addr + INST_WORD_SIZE); | |
1700 | instr_lo &= ~0x0000ffff; | |
1701 | instr_lo |= (val & 0x0000ffff); | |
1702 | bfd_put_32 (abfd, instr_lo, bfd_addr + INST_WORD_SIZE); | |
1703 | } | |
1704 | ||
7ba29e2a NC |
1705 | static bfd_boolean |
1706 | microblaze_elf_relax_section (bfd *abfd, | |
1707 | asection *sec, | |
1708 | struct bfd_link_info *link_info, | |
1709 | bfd_boolean *again) | |
1710 | { | |
1711 | Elf_Internal_Shdr *symtab_hdr; | |
1712 | Elf_Internal_Rela *internal_relocs; | |
1713 | Elf_Internal_Rela *free_relocs = NULL; | |
1714 | Elf_Internal_Rela *irel, *irelend; | |
1715 | bfd_byte *contents = NULL; | |
1716 | bfd_byte *free_contents = NULL; | |
1717 | int rel_count; | |
1718 | unsigned int shndx; | |
91d6fa6a | 1719 | int i, sym_index; |
7ba29e2a NC |
1720 | asection *o; |
1721 | struct elf_link_hash_entry *sym_hash; | |
1722 | Elf_Internal_Sym *isymbuf, *isymend; | |
1723 | Elf_Internal_Sym *isym; | |
1724 | int symcount; | |
1725 | int offset; | |
1726 | bfd_vma src, dest; | |
1727 | ||
1728 | /* We only do this once per section. We may be able to delete some code | |
1729 | by running multiple passes, but it is not worth it. */ | |
1730 | *again = FALSE; | |
1731 | ||
1732 | /* Only do this for a text section. */ | |
0e1862bb | 1733 | if (bfd_link_relocatable (link_info) |
7ba29e2a | 1734 | || (sec->flags & SEC_RELOC) == 0 |
f23200ad ME |
1735 | || (sec->reloc_count == 0) |
1736 | || (sec->flags & SEC_CODE) == 0) | |
7ba29e2a NC |
1737 | return TRUE; |
1738 | ||
1739 | BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0)); | |
1740 | ||
1741 | /* If this is the first time we have been called for this section, | |
1742 | initialize the cooked size. */ | |
1743 | if (sec->size == 0) | |
1744 | sec->size = sec->rawsize; | |
1745 | ||
1746 | /* Get symbols for this section. */ | |
1747 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1748 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1749 | symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
1750 | if (isymbuf == NULL) | |
1751 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, symcount, | |
07d6d2b8 | 1752 | 0, NULL, NULL, NULL); |
7ba29e2a NC |
1753 | BFD_ASSERT (isymbuf != NULL); |
1754 | ||
91d6fa6a | 1755 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory); |
7ba29e2a NC |
1756 | if (internal_relocs == NULL) |
1757 | goto error_return; | |
1758 | if (! link_info->keep_memory) | |
1759 | free_relocs = internal_relocs; | |
1760 | ||
1761 | sec->relax = (struct relax_table *) bfd_malloc ((sec->reloc_count + 1) | |
1762 | * sizeof (struct relax_table)); | |
1763 | if (sec->relax == NULL) | |
1764 | goto error_return; | |
1765 | sec->relax_count = 0; | |
1766 | ||
1767 | irelend = internal_relocs + sec->reloc_count; | |
1768 | rel_count = 0; | |
1769 | for (irel = internal_relocs; irel < irelend; irel++, rel_count++) | |
1770 | { | |
1771 | bfd_vma symval; | |
1772 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64_PCREL) | |
3f0a5f17 ME |
1773 | && (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_64) |
1774 | && (ELF32_R_TYPE (irel->r_info) != (int) R_MICROBLAZE_TEXTREL_64)) | |
7ba29e2a NC |
1775 | continue; /* Can't delete this reloc. */ |
1776 | ||
1777 | /* Get the section contents. */ | |
1778 | if (contents == NULL) | |
1779 | { | |
1780 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1781 | contents = elf_section_data (sec)->this_hdr.contents; | |
1782 | else | |
1783 | { | |
1784 | contents = (bfd_byte *) bfd_malloc (sec->size); | |
1785 | if (contents == NULL) | |
1786 | goto error_return; | |
1787 | free_contents = contents; | |
1788 | ||
1789 | if (!bfd_get_section_contents (abfd, sec, contents, | |
1790 | (file_ptr) 0, sec->size)) | |
1791 | goto error_return; | |
07d6d2b8 | 1792 | elf_section_data (sec)->this_hdr.contents = contents; |
7ba29e2a NC |
1793 | } |
1794 | } | |
1795 | ||
1796 | /* Get the value of the symbol referred to by the reloc. */ | |
1797 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
1798 | { | |
1799 | /* A local symbol. */ | |
7ba29e2a NC |
1800 | asection *sym_sec; |
1801 | ||
1802 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
07d6d2b8 | 1803 | if (isym->st_shndx == SHN_UNDEF) |
7ba29e2a NC |
1804 | sym_sec = bfd_und_section_ptr; |
1805 | else if (isym->st_shndx == SHN_ABS) | |
1806 | sym_sec = bfd_abs_section_ptr; | |
1807 | else if (isym->st_shndx == SHN_COMMON) | |
1808 | sym_sec = bfd_com_section_ptr; | |
1809 | else | |
1810 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
1811 | ||
1812 | symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel); | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | unsigned long indx; | |
1817 | struct elf_link_hash_entry *h; | |
1818 | ||
1819 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
1820 | h = elf_sym_hashes (abfd)[indx]; | |
1821 | BFD_ASSERT (h != NULL); | |
1822 | ||
07d6d2b8 | 1823 | if (h->root.type != bfd_link_hash_defined |
7ba29e2a NC |
1824 | && h->root.type != bfd_link_hash_defweak) |
1825 | /* This appears to be a reference to an undefined | |
1826 | symbol. Just ignore it--it will be caught by the | |
1827 | regular reloc processing. */ | |
1828 | continue; | |
1829 | ||
1830 | symval = (h->root.u.def.value | |
1831 | + h->root.u.def.section->output_section->vma | |
1832 | + h->root.u.def.section->output_offset); | |
1833 | } | |
1834 | ||
1835 | /* If this is a PC-relative reloc, subtract the instr offset from | |
07d6d2b8 | 1836 | the symbol value. */ |
7ba29e2a NC |
1837 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_64_PCREL) |
1838 | { | |
1839 | symval = symval + irel->r_addend | |
1840 | - (irel->r_offset | |
1841 | + sec->output_section->vma | |
1842 | + sec->output_offset); | |
07d6d2b8 | 1843 | } |
3f0a5f17 ME |
1844 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MICROBLAZE_TEXTREL_64) |
1845 | { | |
1846 | symval = symval + irel->r_addend - (sec->output_section->vma); | |
1847 | } | |
7ba29e2a NC |
1848 | else |
1849 | symval += irel->r_addend; | |
1850 | ||
1851 | if ((symval & 0xffff8000) == 0 | |
1852 | || (symval & 0xffff8000) == 0xffff8000) | |
1853 | { | |
07d6d2b8 | 1854 | /* We can delete this instruction. */ |
7ba29e2a NC |
1855 | sec->relax[sec->relax_count].addr = irel->r_offset; |
1856 | sec->relax[sec->relax_count].size = INST_WORD_SIZE; | |
1857 | sec->relax_count++; | |
1858 | ||
1859 | /* Rewrite relocation type. */ | |
07d6d2b8 | 1860 | switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info)) |
7ba29e2a NC |
1861 | { |
1862 | case R_MICROBLAZE_64_PCREL: | |
1863 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
07d6d2b8 | 1864 | (int) R_MICROBLAZE_32_PCREL_LO); |
7ba29e2a NC |
1865 | break; |
1866 | case R_MICROBLAZE_64: | |
07d6d2b8 AM |
1867 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
1868 | (int) R_MICROBLAZE_32_LO); | |
7ba29e2a | 1869 | break; |
3f0a5f17 ME |
1870 | case R_MICROBLAZE_TEXTREL_64: |
1871 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1872 | (int) R_MICROBLAZE_TEXTREL_32_LO); | |
1873 | break; | |
7ba29e2a NC |
1874 | default: |
1875 | /* Cannot happen. */ | |
1876 | BFD_ASSERT (FALSE); | |
07d6d2b8 AM |
1877 | } |
1878 | } | |
7ba29e2a NC |
1879 | } /* Loop through all relocations. */ |
1880 | ||
1881 | /* Loop through the relocs again, and see if anything needs to change. */ | |
1882 | if (sec->relax_count > 0) | |
1883 | { | |
1884 | shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1885 | rel_count = 0; | |
1886 | sec->relax[sec->relax_count].addr = sec->size; | |
1887 | ||
1888 | for (irel = internal_relocs; irel < irelend; irel++, rel_count++) | |
07d6d2b8 | 1889 | { |
7ba29e2a NC |
1890 | bfd_vma nraddr; |
1891 | ||
07d6d2b8 | 1892 | /* Get the new reloc address. */ |
886e427f | 1893 | nraddr = irel->r_offset - calc_fixup (irel->r_offset, 0, sec); |
07d6d2b8 | 1894 | switch ((enum elf_microblaze_reloc_type) ELF32_R_TYPE (irel->r_info)) |
7ba29e2a NC |
1895 | { |
1896 | default: | |
1897 | break; | |
1898 | case R_MICROBLAZE_64_PCREL: | |
1899 | break; | |
3f0a5f17 ME |
1900 | case R_MICROBLAZE_TEXTREL_64: |
1901 | case R_MICROBLAZE_TEXTREL_32_LO: | |
7ba29e2a NC |
1902 | case R_MICROBLAZE_64: |
1903 | case R_MICROBLAZE_32_LO: | |
1904 | /* If this reloc is against a symbol defined in this | |
07d6d2b8 AM |
1905 | section, we must check the addend to see it will put the value in |
1906 | range to be adjusted, and hence must be changed. */ | |
7ba29e2a | 1907 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
07d6d2b8 | 1908 | { |
7ba29e2a NC |
1909 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
1910 | /* Only handle relocs against .text. */ | |
1911 | if (isym->st_shndx == shndx | |
1912 | && ELF32_ST_TYPE (isym->st_info) == STT_SECTION) | |
886e427f | 1913 | irel->r_addend -= calc_fixup (irel->r_addend, 0, sec); |
07d6d2b8 | 1914 | } |
7ba29e2a NC |
1915 | break; |
1916 | case R_MICROBLAZE_NONE: | |
1917 | { | |
07d6d2b8 AM |
1918 | /* This was a PC-relative instruction that was |
1919 | completely resolved. */ | |
1920 | int sfix, efix; | |
1921 | bfd_vma target_address; | |
1922 | target_address = irel->r_addend + irel->r_offset; | |
1923 | sfix = calc_fixup (irel->r_offset, 0, sec); | |
1924 | efix = calc_fixup (target_address, 0, sec); | |
1925 | irel->r_addend -= (efix - sfix); | |
1926 | /* Should use HOWTO. */ | |
1927 | microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset, | |
1928 | irel->r_addend); | |
7ba29e2a NC |
1929 | } |
1930 | break; | |
1931 | case R_MICROBLAZE_64_NONE: | |
1932 | { | |
07d6d2b8 AM |
1933 | /* This was a PC-relative 64-bit instruction that was |
1934 | completely resolved. */ | |
1935 | int sfix, efix; | |
1936 | bfd_vma target_address; | |
7ba29e2a | 1937 | target_address = irel->r_addend + irel->r_offset + INST_WORD_SIZE; |
886e427f ME |
1938 | sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, 0, sec); |
1939 | efix = calc_fixup (target_address, 0, sec); | |
7ba29e2a | 1940 | irel->r_addend -= (efix - sfix); |
f23200ad | 1941 | microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset |
07d6d2b8 | 1942 | + INST_WORD_SIZE, irel->r_addend); |
7ba29e2a NC |
1943 | } |
1944 | break; | |
1945 | } | |
07d6d2b8 AM |
1946 | irel->r_offset = nraddr; |
1947 | } /* Change all relocs in this section. */ | |
7ba29e2a NC |
1948 | |
1949 | /* Look through all other sections. */ | |
1950 | for (o = abfd->sections; o != NULL; o = o->next) | |
07d6d2b8 AM |
1951 | { |
1952 | Elf_Internal_Rela *irelocs; | |
1953 | Elf_Internal_Rela *irelscan, *irelscanend; | |
1954 | bfd_byte *ocontents; | |
1955 | ||
1956 | if (o == sec | |
1957 | || (o->flags & SEC_RELOC) == 0 | |
1958 | || o->reloc_count == 0) | |
1959 | continue; | |
1960 | ||
1961 | /* We always cache the relocs. Perhaps, if info->keep_memory is | |
1962 | FALSE, we should free them, if we are permitted to. */ | |
1963 | ||
1964 | irelocs = _bfd_elf_link_read_relocs (abfd, o, NULL, NULL, TRUE); | |
1965 | if (irelocs == NULL) | |
1966 | goto error_return; | |
1967 | ||
1968 | ocontents = NULL; | |
1969 | irelscanend = irelocs + o->reloc_count; | |
1970 | for (irelscan = irelocs; irelscan < irelscanend; irelscan++) | |
1971 | { | |
1972 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32) | |
1973 | { | |
1974 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); | |
1975 | ||
1976 | /* Look at the reloc only if the value has been resolved. */ | |
1977 | if (isym->st_shndx == shndx | |
1978 | && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION)) | |
1979 | { | |
1980 | if (ocontents == NULL) | |
1981 | { | |
1982 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
1983 | ocontents = elf_section_data (o)->this_hdr.contents; | |
1984 | else | |
1985 | { | |
1986 | /* We always cache the section contents. | |
1987 | Perhaps, if info->keep_memory is FALSE, we | |
1988 | should free them, if we are permitted to. */ | |
1989 | if (o->rawsize == 0) | |
1990 | o->rawsize = o->size; | |
1991 | ocontents = (bfd_byte *) bfd_malloc (o->rawsize); | |
1992 | if (ocontents == NULL) | |
1993 | goto error_return; | |
1994 | if (!bfd_get_section_contents (abfd, o, ocontents, | |
1995 | (file_ptr) 0, | |
7ba29e2a | 1996 | o->rawsize)) |
07d6d2b8 AM |
1997 | goto error_return; |
1998 | elf_section_data (o)->this_hdr.contents = ocontents; | |
1999 | } | |
7ba29e2a | 2000 | |
07d6d2b8 | 2001 | } |
886e427f | 2002 | irelscan->r_addend -= calc_fixup (irelscan->r_addend, 0, sec); |
07d6d2b8 | 2003 | } |
7ba29e2a NC |
2004 | else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_SYM_OP_SYM) |
2005 | { | |
2006 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); | |
2007 | ||
2008 | /* Look at the reloc only if the value has been resolved. */ | |
2009 | if (ocontents == NULL) | |
2010 | { | |
2011 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
2012 | ocontents = elf_section_data (o)->this_hdr.contents; | |
2013 | else | |
2014 | { | |
2015 | /* We always cache the section contents. | |
2016 | Perhaps, if info->keep_memory is FALSE, we | |
2017 | should free them, if we are permitted to. */ | |
2018 | ||
2019 | if (o->rawsize == 0) | |
2020 | o->rawsize = o->size; | |
2021 | ocontents = (bfd_byte *) bfd_malloc (o->rawsize); | |
2022 | if (ocontents == NULL) | |
2023 | goto error_return; | |
2024 | if (!bfd_get_section_contents (abfd, o, ocontents, | |
2025 | (file_ptr) 0, | |
2026 | o->rawsize)) | |
2027 | goto error_return; | |
2028 | elf_section_data (o)->this_hdr.contents = ocontents; | |
2029 | } | |
2030 | } | |
2031 | irelscan->r_addend -= calc_fixup (irel->r_addend | |
2032 | + isym->st_value, | |
886e427f | 2033 | 0, |
7ba29e2a NC |
2034 | sec); |
2035 | } | |
2036 | } | |
2037 | else if ((ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_32_PCREL_LO) | |
3f0a5f17 ME |
2038 | || (ELF32_R_TYPE (irelscan->r_info) |
2039 | == (int) R_MICROBLAZE_32_LO) | |
2040 | || (ELF32_R_TYPE (irelscan->r_info) | |
2041 | == (int) R_MICROBLAZE_TEXTREL_32_LO)) | |
7ba29e2a NC |
2042 | { |
2043 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); | |
2044 | ||
2045 | /* Look at the reloc only if the value has been resolved. */ | |
2046 | if (isym->st_shndx == shndx | |
2047 | && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION)) | |
2048 | { | |
2049 | bfd_vma immediate; | |
2050 | bfd_vma target_address; | |
2051 | ||
2052 | if (ocontents == NULL) | |
2053 | { | |
2054 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
2055 | ocontents = elf_section_data (o)->this_hdr.contents; | |
2056 | else | |
2057 | { | |
2058 | /* We always cache the section contents. | |
2059 | Perhaps, if info->keep_memory is FALSE, we | |
2060 | should free them, if we are permitted to. */ | |
2061 | if (o->rawsize == 0) | |
2062 | o->rawsize = o->size; | |
2063 | ocontents = (bfd_byte *) bfd_malloc (o->rawsize); | |
2064 | if (ocontents == NULL) | |
2065 | goto error_return; | |
2066 | if (!bfd_get_section_contents (abfd, o, ocontents, | |
2067 | (file_ptr) 0, | |
2068 | o->rawsize)) | |
2069 | goto error_return; | |
2070 | elf_section_data (o)->this_hdr.contents = ocontents; | |
2071 | } | |
2072 | } | |
2073 | ||
f23200ad ME |
2074 | unsigned long instr = bfd_get_32 (abfd, ocontents + irelscan->r_offset); |
2075 | immediate = instr & 0x0000ffff; | |
7ba29e2a | 2076 | target_address = immediate; |
886e427f | 2077 | offset = calc_fixup (target_address, 0, sec); |
7ba29e2a NC |
2078 | immediate -= offset; |
2079 | irelscan->r_addend -= offset; | |
07d6d2b8 AM |
2080 | microblaze_bfd_write_imm_value_32 (abfd, ocontents + irelscan->r_offset, |
2081 | irelscan->r_addend); | |
7ba29e2a NC |
2082 | } |
2083 | } | |
2084 | ||
3f0a5f17 ME |
2085 | if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64 |
2086 | || (ELF32_R_TYPE (irelscan->r_info) | |
2087 | == (int) R_MICROBLAZE_TEXTREL_64)) | |
7ba29e2a NC |
2088 | { |
2089 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); | |
2090 | ||
2091 | /* Look at the reloc only if the value has been resolved. */ | |
2092 | if (isym->st_shndx == shndx | |
2093 | && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION)) | |
2094 | { | |
2095 | bfd_vma immediate; | |
2096 | ||
2097 | if (ocontents == NULL) | |
2098 | { | |
2099 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
2100 | ocontents = elf_section_data (o)->this_hdr.contents; | |
2101 | else | |
2102 | { | |
2103 | /* We always cache the section contents. | |
2104 | Perhaps, if info->keep_memory is FALSE, we | |
2105 | should free them, if we are permitted to. */ | |
2106 | ||
2107 | if (o->rawsize == 0) | |
2108 | o->rawsize = o->size; | |
2109 | ocontents = (bfd_byte *) bfd_malloc (o->rawsize); | |
2110 | if (ocontents == NULL) | |
2111 | goto error_return; | |
2112 | if (!bfd_get_section_contents (abfd, o, ocontents, | |
2113 | (file_ptr) 0, | |
2114 | o->rawsize)) | |
2115 | goto error_return; | |
2116 | elf_section_data (o)->this_hdr.contents = ocontents; | |
2117 | } | |
2118 | } | |
07d6d2b8 AM |
2119 | unsigned long instr_hi = bfd_get_32 (abfd, ocontents |
2120 | + irelscan->r_offset); | |
2121 | unsigned long instr_lo = bfd_get_32 (abfd, ocontents | |
2122 | + irelscan->r_offset | |
2123 | + INST_WORD_SIZE); | |
2124 | immediate = (instr_hi & 0x0000ffff) << 16; | |
2125 | immediate |= (instr_lo & 0x0000ffff); | |
886e427f | 2126 | offset = calc_fixup (irelscan->r_addend, 0, sec); |
7ba29e2a NC |
2127 | immediate -= offset; |
2128 | irelscan->r_addend -= offset; | |
2129 | } | |
2130 | } | |
2131 | else if (ELF32_R_TYPE (irelscan->r_info) == (int) R_MICROBLAZE_64_PCREL) | |
2132 | { | |
2133 | isym = isymbuf + ELF32_R_SYM (irelscan->r_info); | |
2134 | ||
2135 | /* Look at the reloc only if the value has been resolved. */ | |
2136 | if (isym->st_shndx == shndx | |
2137 | && (ELF32_ST_TYPE (isym->st_info) == STT_SECTION)) | |
2138 | { | |
2139 | bfd_vma immediate; | |
2140 | bfd_vma target_address; | |
2141 | ||
2142 | if (ocontents == NULL) | |
2143 | { | |
2144 | if (elf_section_data (o)->this_hdr.contents != NULL) | |
2145 | ocontents = elf_section_data (o)->this_hdr.contents; | |
2146 | else | |
2147 | { | |
2148 | /* We always cache the section contents. | |
2149 | Perhaps, if info->keep_memory is FALSE, we | |
2150 | should free them, if we are permitted to. */ | |
2151 | if (o->rawsize == 0) | |
2152 | o->rawsize = o->size; | |
2153 | ocontents = (bfd_byte *) bfd_malloc (o->rawsize); | |
2154 | if (ocontents == NULL) | |
2155 | goto error_return; | |
2156 | if (!bfd_get_section_contents (abfd, o, ocontents, | |
2157 | (file_ptr) 0, | |
2158 | o->rawsize)) | |
2159 | goto error_return; | |
2160 | elf_section_data (o)->this_hdr.contents = ocontents; | |
2161 | } | |
2162 | } | |
07d6d2b8 AM |
2163 | unsigned long instr_hi = bfd_get_32 (abfd, ocontents |
2164 | + irelscan->r_offset); | |
2165 | unsigned long instr_lo = bfd_get_32 (abfd, ocontents | |
2166 | + irelscan->r_offset | |
2167 | + INST_WORD_SIZE); | |
2168 | immediate = (instr_hi & 0x0000ffff) << 16; | |
2169 | immediate |= (instr_lo & 0x0000ffff); | |
7ba29e2a | 2170 | target_address = immediate; |
886e427f | 2171 | offset = calc_fixup (target_address, 0, sec); |
7ba29e2a NC |
2172 | immediate -= offset; |
2173 | irelscan->r_addend -= offset; | |
07d6d2b8 AM |
2174 | microblaze_bfd_write_imm_value_64 (abfd, ocontents |
2175 | + irelscan->r_offset, immediate); | |
7ba29e2a NC |
2176 | } |
2177 | } | |
07d6d2b8 AM |
2178 | } |
2179 | } | |
7ba29e2a NC |
2180 | |
2181 | /* Adjust the local symbols defined in this section. */ | |
2182 | isymend = isymbuf + symtab_hdr->sh_info; | |
2183 | for (isym = isymbuf; isym < isymend; isym++) | |
07d6d2b8 AM |
2184 | { |
2185 | if (isym->st_shndx == shndx) | |
2186 | { | |
2187 | isym->st_value -= calc_fixup (isym->st_value, 0, sec); | |
2188 | if (isym->st_size) | |
2189 | isym->st_size -= calc_fixup (isym->st_value, isym->st_size, sec); | |
2190 | } | |
2191 | } | |
7ba29e2a NC |
2192 | |
2193 | /* Now adjust the global symbols defined in this section. */ | |
2194 | isym = isymbuf + symtab_hdr->sh_info; | |
886e427f ME |
2195 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) - symtab_hdr->sh_info; |
2196 | for (sym_index = 0; sym_index < symcount; sym_index++) | |
07d6d2b8 AM |
2197 | { |
2198 | sym_hash = elf_sym_hashes (abfd)[sym_index]; | |
2199 | if ((sym_hash->root.type == bfd_link_hash_defined | |
2200 | || sym_hash->root.type == bfd_link_hash_defweak) | |
2201 | && sym_hash->root.u.def.section == sec) | |
2202 | { | |
2203 | sym_hash->root.u.def.value -= calc_fixup (sym_hash->root.u.def.value, | |
2204 | 0, sec); | |
2205 | if (sym_hash->size) | |
2206 | sym_hash->size -= calc_fixup (sym_hash->root.u.def.value, | |
2207 | sym_hash->size, sec); | |
2208 | } | |
2209 | } | |
7ba29e2a NC |
2210 | |
2211 | /* Physically move the code and change the cooked size. */ | |
2212 | dest = sec->relax[0].addr; | |
2213 | for (i = 0; i < sec->relax_count; i++) | |
07d6d2b8 AM |
2214 | { |
2215 | int len; | |
2216 | src = sec->relax[i].addr + sec->relax[i].size; | |
2217 | len = sec->relax[i+1].addr - sec->relax[i].addr - sec->relax[i].size; | |
7ba29e2a | 2218 | |
07d6d2b8 AM |
2219 | memmove (contents + dest, contents + src, len); |
2220 | sec->size -= sec->relax[i].size; | |
2221 | dest += len; | |
2222 | } | |
7ba29e2a NC |
2223 | |
2224 | elf_section_data (sec)->relocs = internal_relocs; | |
2225 | free_relocs = NULL; | |
2226 | ||
2227 | elf_section_data (sec)->this_hdr.contents = contents; | |
2228 | free_contents = NULL; | |
2229 | ||
2230 | symtab_hdr->contents = (bfd_byte *) isymbuf; | |
2231 | } | |
2232 | ||
c9594989 AM |
2233 | free (free_relocs); |
2234 | free_relocs = NULL; | |
7ba29e2a NC |
2235 | |
2236 | if (free_contents != NULL) | |
2237 | { | |
2238 | if (!link_info->keep_memory) | |
2239 | free (free_contents); | |
2240 | else | |
2241 | /* Cache the section contents for elf_link_input_bfd. */ | |
2242 | elf_section_data (sec)->this_hdr.contents = contents; | |
2243 | free_contents = NULL; | |
2244 | } | |
2245 | ||
2246 | if (sec->relax_count == 0) | |
2247 | { | |
f23200ad | 2248 | *again = FALSE; |
7ba29e2a NC |
2249 | free (sec->relax); |
2250 | sec->relax = NULL; | |
2251 | } | |
f23200ad ME |
2252 | else |
2253 | *again = TRUE; | |
7ba29e2a NC |
2254 | return TRUE; |
2255 | ||
2256 | error_return: | |
c9594989 AM |
2257 | free (free_relocs); |
2258 | free (free_contents); | |
2259 | free (sec->relax); | |
2260 | sec->relax = NULL; | |
2261 | sec->relax_count = 0; | |
7ba29e2a NC |
2262 | return FALSE; |
2263 | } | |
2264 | ||
2265 | /* Return the section that should be marked against GC for a given | |
2266 | relocation. */ | |
2267 | ||
2268 | static asection * | |
2269 | microblaze_elf_gc_mark_hook (asection *sec, | |
fb34365b | 2270 | struct bfd_link_info * info, |
07d6d2b8 AM |
2271 | Elf_Internal_Rela * rel, |
2272 | struct elf_link_hash_entry * h, | |
2273 | Elf_Internal_Sym * sym) | |
7ba29e2a NC |
2274 | { |
2275 | if (h != NULL) | |
fb34365b AM |
2276 | switch (ELF32_R_TYPE (rel->r_info)) |
2277 | { | |
2278 | case R_MICROBLAZE_GNU_VTINHERIT: | |
2279 | case R_MICROBLAZE_GNU_VTENTRY: | |
2280 | return NULL; | |
2281 | } | |
2282 | ||
2283 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
7ba29e2a NC |
2284 | } |
2285 | ||
7ba29e2a NC |
2286 | /* PIC support. */ |
2287 | ||
2288 | #define PLT_ENTRY_SIZE 16 | |
2289 | ||
07d6d2b8 AM |
2290 | #define PLT_ENTRY_WORD_0 0xb0000000 /* "imm 0". */ |
2291 | #define PLT_ENTRY_WORD_1 0xe9940000 /* "lwi r12,r20,0" - relocated to lwi r12,r20,func@GOT. */ | |
2292 | #define PLT_ENTRY_WORD_1_NOPIC 0xe9800000 /* "lwi r12,r0,0" - non-PIC object. */ | |
2293 | #define PLT_ENTRY_WORD_2 0x98186000 /* "brad r12". */ | |
2294 | #define PLT_ENTRY_WORD_3 0x80000000 /* "nop". */ | |
7ba29e2a | 2295 | |
69b06cc8 ME |
2296 | static bfd_boolean |
2297 | update_local_sym_info (bfd *abfd, | |
2298 | Elf_Internal_Shdr *symtab_hdr, | |
2299 | unsigned long r_symndx, | |
2300 | unsigned int tls_type) | |
2301 | { | |
2302 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd); | |
2303 | unsigned char *local_got_tls_masks; | |
2304 | ||
2305 | if (local_got_refcounts == NULL) | |
2306 | { | |
2307 | bfd_size_type size = symtab_hdr->sh_info; | |
2308 | ||
2309 | size *= (sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks)); | |
2310 | local_got_refcounts = bfd_zalloc (abfd, size); | |
2311 | if (local_got_refcounts == NULL) | |
07d6d2b8 | 2312 | return FALSE; |
69b06cc8 ME |
2313 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
2314 | } | |
2315 | ||
2316 | local_got_tls_masks = | |
07d6d2b8 | 2317 | (unsigned char *) (local_got_refcounts + symtab_hdr->sh_info); |
69b06cc8 ME |
2318 | local_got_tls_masks[r_symndx] |= tls_type; |
2319 | local_got_refcounts[r_symndx] += 1; | |
2320 | ||
2321 | return TRUE; | |
2322 | } | |
7ba29e2a NC |
2323 | /* Look through the relocs for a section during the first phase. */ |
2324 | ||
2325 | static bfd_boolean | |
2326 | microblaze_elf_check_relocs (bfd * abfd, | |
2327 | struct bfd_link_info * info, | |
07d6d2b8 | 2328 | asection * sec, |
7ba29e2a NC |
2329 | const Elf_Internal_Rela * relocs) |
2330 | { | |
07d6d2b8 | 2331 | Elf_Internal_Shdr * symtab_hdr; |
7ba29e2a NC |
2332 | struct elf_link_hash_entry ** sym_hashes; |
2333 | struct elf_link_hash_entry ** sym_hashes_end; | |
07d6d2b8 AM |
2334 | const Elf_Internal_Rela * rel; |
2335 | const Elf_Internal_Rela * rel_end; | |
7ba29e2a | 2336 | struct elf32_mb_link_hash_table *htab; |
7ba29e2a NC |
2337 | asection *sreloc = NULL; |
2338 | ||
0e1862bb | 2339 | if (bfd_link_relocatable (info)) |
7ba29e2a NC |
2340 | return TRUE; |
2341 | ||
2342 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
2343 | if (htab == NULL) |
2344 | return FALSE; | |
2345 | ||
7ba29e2a NC |
2346 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; |
2347 | sym_hashes = elf_sym_hashes (abfd); | |
2348 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
2349 | if (!elf_bad_symtab (abfd)) | |
2350 | sym_hashes_end -= symtab_hdr->sh_info; | |
2351 | ||
2352 | rel_end = relocs + sec->reloc_count; | |
2353 | ||
2354 | for (rel = relocs; rel < rel_end; rel++) | |
2355 | { | |
2356 | unsigned int r_type; | |
2357 | struct elf_link_hash_entry * h; | |
2358 | unsigned long r_symndx; | |
69b06cc8 | 2359 | unsigned char tls_type = 0; |
7ba29e2a NC |
2360 | |
2361 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2362 | r_type = ELF32_R_TYPE (rel->r_info); | |
2363 | ||
2364 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 | 2365 | h = NULL; |
7ba29e2a | 2366 | else |
81fbe831 AM |
2367 | { |
2368 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
b7213666 L |
2369 | while (h->root.type == bfd_link_hash_indirect |
2370 | || h->root.type == bfd_link_hash_warning) | |
2371 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 | 2372 | } |
7ba29e2a NC |
2373 | |
2374 | switch (r_type) | |
07d6d2b8 | 2375 | { |
7ba29e2a NC |
2376 | /* This relocation describes the C++ object vtable hierarchy. |
2377 | Reconstruct it for later use during GC. */ | |
07d6d2b8 AM |
2378 | case R_MICROBLAZE_GNU_VTINHERIT: |
2379 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
2380 | return FALSE; | |
2381 | break; | |
7ba29e2a NC |
2382 | |
2383 | /* This relocation describes which C++ vtable entries are actually | |
2384 | used. Record for later use during GC. */ | |
07d6d2b8 AM |
2385 | case R_MICROBLAZE_GNU_VTENTRY: |
2386 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
2387 | return FALSE; | |
2388 | break; | |
7ba29e2a NC |
2389 | |
2390 | /* This relocation requires .plt entry. */ | |
07d6d2b8 AM |
2391 | case R_MICROBLAZE_PLT_64: |
2392 | if (h != NULL) | |
7ba29e2a NC |
2393 | { |
2394 | h->needs_plt = 1; | |
2395 | h->plt.refcount += 1; | |
2396 | } | |
07d6d2b8 | 2397 | break; |
7ba29e2a NC |
2398 | |
2399 | /* This relocation requires .got entry. */ | |
07d6d2b8 AM |
2400 | case R_MICROBLAZE_TLSGD: |
2401 | tls_type |= (TLS_TLS | TLS_GD); | |
2402 | goto dogottls; | |
2403 | case R_MICROBLAZE_TLSLD: | |
2404 | tls_type |= (TLS_TLS | TLS_LD); | |
1a0670f3 | 2405 | /* Fall through. */ |
07d6d2b8 AM |
2406 | dogottls: |
2407 | sec->has_tls_reloc = 1; | |
1a0670f3 | 2408 | /* Fall through. */ |
07d6d2b8 AM |
2409 | case R_MICROBLAZE_GOT_64: |
2410 | if (htab->elf.sgot == NULL) | |
2411 | { | |
2412 | if (htab->elf.dynobj == NULL) | |
2413 | htab->elf.dynobj = abfd; | |
2414 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
2415 | return FALSE; | |
2416 | } | |
2417 | if (h != NULL) | |
7ba29e2a NC |
2418 | { |
2419 | h->got.refcount += 1; | |
69b06cc8 | 2420 | elf32_mb_hash_entry (h)->tls_mask |= tls_type; |
7ba29e2a | 2421 | } |
07d6d2b8 | 2422 | else |
7ba29e2a | 2423 | { |
69b06cc8 ME |
2424 | if (! update_local_sym_info(abfd, symtab_hdr, r_symndx, tls_type) ) |
2425 | return FALSE; | |
7ba29e2a | 2426 | } |
07d6d2b8 | 2427 | break; |
7ba29e2a | 2428 | |
206c9c79 AM |
2429 | case R_MICROBLAZE_GOTOFF_64: |
2430 | case R_MICROBLAZE_GOTOFF_32: | |
2431 | if (htab->elf.sgot == NULL) | |
2432 | { | |
2433 | if (htab->elf.dynobj == NULL) | |
2434 | htab->elf.dynobj = abfd; | |
2435 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
2436 | return FALSE; | |
2437 | } | |
2438 | break; | |
2439 | ||
07d6d2b8 AM |
2440 | case R_MICROBLAZE_64: |
2441 | case R_MICROBLAZE_64_PCREL: | |
2442 | case R_MICROBLAZE_32: | |
2443 | { | |
2444 | if (h != NULL && !bfd_link_pic (info)) | |
7ba29e2a NC |
2445 | { |
2446 | /* we may need a copy reloc. */ | |
2447 | h->non_got_ref = 1; | |
2448 | ||
2449 | /* we may also need a .plt entry. */ | |
2450 | h->plt.refcount += 1; | |
2451 | if (ELF32_R_TYPE (rel->r_info) != R_MICROBLAZE_64_PCREL) | |
2452 | h->pointer_equality_needed = 1; | |
2453 | } | |
2454 | ||
2455 | ||
2456 | /* If we are creating a shared library, and this is a reloc | |
2457 | against a global symbol, or a non PC relative reloc | |
2458 | against a local symbol, then we need to copy the reloc | |
2459 | into the shared library. However, if we are linking with | |
2460 | -Bsymbolic, we do not need to copy a reloc against a | |
2461 | global symbol which is defined in an object we are | |
2462 | including in the link (i.e., DEF_REGULAR is set). At | |
2463 | this point we have not seen all the input files, so it is | |
2464 | possible that DEF_REGULAR is not set now but will be set | |
2465 | later (it is never cleared). In case of a weak definition, | |
2466 | DEF_REGULAR may be cleared later by a strong definition in | |
2467 | a shared library. We account for that possibility below by | |
2468 | storing information in the relocs_copied field of the hash | |
2469 | table entry. A similar situation occurs when creating | |
2470 | shared libraries and symbol visibility changes render the | |
2471 | symbol local. | |
2472 | ||
2473 | If on the other hand, we are creating an executable, we | |
2474 | may need to keep relocations for symbols satisfied by a | |
2475 | dynamic library if we manage to avoid copy relocs for the | |
2476 | symbol. */ | |
2477 | ||
07d6d2b8 AM |
2478 | if ((bfd_link_pic (info) |
2479 | && (sec->flags & SEC_ALLOC) != 0 | |
2480 | && (r_type != R_MICROBLAZE_64_PCREL | |
2481 | || (h != NULL | |
7ba29e2a NC |
2482 | && (! info->symbolic |
2483 | || h->root.type == bfd_link_hash_defweak | |
2484 | || !h->def_regular)))) | |
07d6d2b8 AM |
2485 | || (!bfd_link_pic (info) |
2486 | && (sec->flags & SEC_ALLOC) != 0 | |
2487 | && h != NULL | |
2488 | && (h->root.type == bfd_link_hash_defweak | |
2489 | || !h->def_regular))) | |
2490 | { | |
2491 | struct elf_dyn_relocs *p; | |
2492 | struct elf_dyn_relocs **head; | |
2493 | ||
2494 | /* When creating a shared object, we must copy these | |
2495 | relocs into the output file. We create a reloc | |
2496 | section in dynobj and make room for the reloc. */ | |
7ba29e2a NC |
2497 | |
2498 | if (sreloc == NULL) | |
2499 | { | |
7ba29e2a | 2500 | bfd *dynobj; |
7ba29e2a NC |
2501 | |
2502 | if (htab->elf.dynobj == NULL) | |
2503 | htab->elf.dynobj = abfd; | |
2504 | dynobj = htab->elf.dynobj; | |
2505 | ||
69b06cc8 ME |
2506 | sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj, |
2507 | 2, abfd, 1); | |
7ba29e2a | 2508 | if (sreloc == NULL) |
69b06cc8 | 2509 | return FALSE; |
7ba29e2a NC |
2510 | } |
2511 | ||
2512 | /* If this is a global symbol, we count the number of | |
2513 | relocations we need for this symbol. */ | |
2514 | if (h != NULL) | |
190eb1dd | 2515 | head = &h->dyn_relocs; |
7ba29e2a NC |
2516 | else |
2517 | { | |
2518 | /* Track dynamic relocs needed for local syms too. | |
2519 | We really need local syms available to do this | |
2520 | easily. Oh well. */ | |
2521 | ||
2522 | asection *s; | |
2523 | Elf_Internal_Sym *isym; | |
918d9742 | 2524 | void *vpp; |
7ba29e2a NC |
2525 | |
2526 | isym = bfd_sym_from_r_symndx (&htab->sym_sec, | |
2527 | abfd, r_symndx); | |
2528 | if (isym == NULL) | |
2529 | return FALSE; | |
2530 | ||
2531 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
2532 | if (s == NULL) | |
2533 | return FALSE; | |
2534 | ||
918d9742 | 2535 | vpp = &elf_section_data (s)->local_dynrel; |
3bf083ed | 2536 | head = (struct elf_dyn_relocs **) vpp; |
7ba29e2a NC |
2537 | } |
2538 | ||
2539 | p = *head; | |
2540 | if (p == NULL || p->sec != sec) | |
2541 | { | |
986f0783 | 2542 | size_t amt = sizeof *p; |
3bf083ed | 2543 | p = ((struct elf_dyn_relocs *) |
7ba29e2a NC |
2544 | bfd_alloc (htab->elf.dynobj, amt)); |
2545 | if (p == NULL) | |
2546 | return FALSE; | |
2547 | p->next = *head; | |
2548 | *head = p; | |
2549 | p->sec = sec; | |
2550 | p->count = 0; | |
2551 | p->pc_count = 0; | |
2552 | } | |
2553 | ||
2554 | p->count += 1; | |
2555 | if (r_type == R_MICROBLAZE_64_PCREL) | |
2556 | p->pc_count += 1; | |
2557 | } | |
07d6d2b8 AM |
2558 | } |
2559 | break; | |
2560 | } | |
7ba29e2a NC |
2561 | } |
2562 | ||
2563 | return TRUE; | |
2564 | } | |
2565 | ||
7ba29e2a NC |
2566 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2567 | ||
2568 | static void | |
2569 | microblaze_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
2570 | struct elf_link_hash_entry *dir, | |
2571 | struct elf_link_hash_entry *ind) | |
2572 | { | |
2573 | struct elf32_mb_link_hash_entry *edir, *eind; | |
2574 | ||
2575 | edir = (struct elf32_mb_link_hash_entry *) dir; | |
2576 | eind = (struct elf32_mb_link_hash_entry *) ind; | |
2577 | ||
190eb1dd | 2578 | if (ind->dyn_relocs != NULL) |
7ba29e2a | 2579 | { |
190eb1dd | 2580 | if (dir->dyn_relocs != NULL) |
7ba29e2a | 2581 | { |
3bf083ed AM |
2582 | struct elf_dyn_relocs **pp; |
2583 | struct elf_dyn_relocs *p; | |
7ba29e2a NC |
2584 | |
2585 | if (ind->root.type == bfd_link_hash_indirect) | |
2586 | abort (); | |
2587 | ||
2588 | /* Add reloc counts against the weak sym to the strong sym | |
2589 | list. Merge any entries against the same section. */ | |
190eb1dd | 2590 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
7ba29e2a | 2591 | { |
3bf083ed | 2592 | struct elf_dyn_relocs *q; |
7ba29e2a | 2593 | |
190eb1dd | 2594 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
7ba29e2a NC |
2595 | if (q->sec == p->sec) |
2596 | { | |
2597 | q->pc_count += p->pc_count; | |
2598 | q->count += p->count; | |
2599 | *pp = p->next; | |
2600 | break; | |
2601 | } | |
2602 | if (q == NULL) | |
2603 | pp = &p->next; | |
2604 | } | |
190eb1dd | 2605 | *pp = dir->dyn_relocs; |
7ba29e2a NC |
2606 | } |
2607 | ||
190eb1dd L |
2608 | dir->dyn_relocs = ind->dyn_relocs; |
2609 | ind->dyn_relocs = NULL; | |
7ba29e2a NC |
2610 | } |
2611 | ||
69b06cc8 ME |
2612 | edir->tls_mask |= eind->tls_mask; |
2613 | ||
7ba29e2a NC |
2614 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
2615 | } | |
2616 | ||
3bf083ed AM |
2617 | /* Find dynamic relocs for H that apply to read-only sections. */ |
2618 | ||
2619 | static asection * | |
2620 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
2621 | { | |
2622 | struct elf_dyn_relocs *p; | |
2623 | ||
190eb1dd | 2624 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
3bf083ed AM |
2625 | { |
2626 | asection *s = p->sec->output_section; | |
2627 | ||
2628 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2629 | return p->sec; | |
2630 | } | |
2631 | return NULL; | |
2632 | } | |
2633 | ||
7ba29e2a NC |
2634 | static bfd_boolean |
2635 | microblaze_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2636 | struct elf_link_hash_entry *h) | |
2637 | { | |
2638 | struct elf32_mb_link_hash_table *htab; | |
5474d94f | 2639 | asection *s, *srel; |
7ba29e2a | 2640 | unsigned int power_of_two; |
7ba29e2a NC |
2641 | |
2642 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
2643 | if (htab == NULL) |
2644 | return FALSE; | |
7ba29e2a NC |
2645 | |
2646 | /* If this is a function, put it in the procedure linkage table. We | |
2647 | will fill in the contents of the procedure linkage table later, | |
2648 | when we know the address of the .got section. */ | |
2649 | if (h->type == STT_FUNC | |
2650 | || h->needs_plt) | |
2651 | { | |
2652 | if (h->plt.refcount <= 0 | |
2653 | || SYMBOL_CALLS_LOCAL (info, h) | |
2654 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2655 | && h->root.type == bfd_link_hash_undefweak)) | |
2656 | { | |
2657 | /* This case can occur if we saw a PLT reloc in an input | |
2658 | file, but the symbol was never referred to by a dynamic | |
2659 | object, or if all references were garbage collected. In | |
2660 | such a case, we don't actually need to build a procedure | |
2661 | linkage table, and we can just do a PC32 reloc instead. */ | |
2662 | h->plt.offset = (bfd_vma) -1; | |
2663 | h->needs_plt = 0; | |
2664 | } | |
2665 | ||
2666 | return TRUE; | |
2667 | } | |
2668 | else | |
2669 | /* It's possible that we incorrectly decided a .plt reloc was | |
2670 | needed for an R_MICROBLAZE_64_PCREL reloc to a non-function sym in | |
2671 | check_relocs. We can't decide accurately between function and | |
2672 | non-function syms in check-relocs; Objects loaded later in | |
2673 | the link may change h->type. So fix it now. */ | |
2674 | h->plt.offset = (bfd_vma) -1; | |
2675 | ||
2676 | /* If this is a weak symbol, and there is a real definition, the | |
2677 | processor independent code will have arranged for us to see the | |
2678 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2679 | if (h->is_weakalias) |
7ba29e2a | 2680 | { |
60d67dc8 AM |
2681 | struct elf_link_hash_entry *def = weakdef (h); |
2682 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2683 | h->root.u.def.section = def->root.u.def.section; | |
2684 | h->root.u.def.value = def->root.u.def.value; | |
7ba29e2a NC |
2685 | return TRUE; |
2686 | } | |
2687 | ||
2688 | /* This is a reference to a symbol defined by a dynamic object which | |
2689 | is not a function. */ | |
2690 | ||
2691 | /* If we are creating a shared library, we must presume that the | |
2692 | only references to the symbol are via the global offset table. | |
2693 | For such cases we need not do anything here; the relocations will | |
2694 | be handled correctly by relocate_section. */ | |
0e1862bb | 2695 | if (bfd_link_pic (info)) |
7ba29e2a NC |
2696 | return TRUE; |
2697 | ||
2698 | /* If there are no references to this symbol that do not use the | |
2699 | GOT, we don't need to generate a copy reloc. */ | |
2700 | if (!h->non_got_ref) | |
2701 | return TRUE; | |
2702 | ||
2703 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
2704 | if (info->nocopyreloc) | |
2705 | { | |
2706 | h->non_got_ref = 0; | |
2707 | return TRUE; | |
2708 | } | |
2709 | ||
3bf083ed | 2710 | /* If we don't find any dynamic relocs in read-only sections, then |
7ba29e2a | 2711 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
3bf083ed | 2712 | if (!readonly_dynrelocs (h)) |
7ba29e2a NC |
2713 | { |
2714 | h->non_got_ref = 0; | |
2715 | return TRUE; | |
2716 | } | |
2717 | ||
2718 | /* We must allocate the symbol in our .dynbss section, which will | |
2719 | become part of the .bss section of the executable. There will be | |
2720 | an entry for this symbol in the .dynsym section. The dynamic | |
2721 | object will contain position independent code, so all references | |
2722 | from the dynamic object to this symbol will go through the global | |
2723 | offset table. The dynamic linker will use the .dynsym entry to | |
2724 | determine the address it must put in the global offset table, so | |
2725 | both the dynamic object and the regular object will refer to the | |
2726 | same memory location for the variable. */ | |
2727 | ||
2728 | /* We must generate a R_MICROBLAZE_COPY reloc to tell the dynamic linker | |
2729 | to copy the initial value out of the dynamic object and into the | |
2730 | runtime process image. */ | |
5474d94f AM |
2731 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
2732 | { | |
2733 | s = htab->elf.sdynrelro; | |
2734 | srel = htab->elf.sreldynrelro; | |
2735 | } | |
2736 | else | |
2737 | { | |
2738 | s = htab->elf.sdynbss; | |
2739 | srel = htab->elf.srelbss; | |
2740 | } | |
7ba29e2a NC |
2741 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
2742 | { | |
5474d94f | 2743 | srel->size += sizeof (Elf32_External_Rela); |
7ba29e2a NC |
2744 | h->needs_copy = 1; |
2745 | } | |
2746 | ||
2747 | /* We need to figure out the alignment required for this symbol. I | |
2748 | have no idea how ELF linkers handle this. */ | |
2749 | power_of_two = bfd_log2 (h->size); | |
2750 | if (power_of_two > 3) | |
2751 | power_of_two = 3; | |
2752 | ||
7ba29e2a | 2753 | /* Apply the required alignment. */ |
5474d94f AM |
2754 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
2755 | if (power_of_two > s->alignment_power) | |
7ba29e2a | 2756 | { |
fd361982 | 2757 | if (!bfd_set_section_alignment (s, power_of_two)) |
7ba29e2a NC |
2758 | return FALSE; |
2759 | } | |
2760 | ||
2761 | /* Define the symbol as being at this point in the section. */ | |
5474d94f AM |
2762 | h->root.u.def.section = s; |
2763 | h->root.u.def.value = s->size; | |
7ba29e2a NC |
2764 | |
2765 | /* Increment the section size to make room for the symbol. */ | |
5474d94f | 2766 | s->size += h->size; |
7ba29e2a NC |
2767 | return TRUE; |
2768 | } | |
2769 | ||
2770 | /* Allocate space in .plt, .got and associated reloc sections for | |
2771 | dynamic relocs. */ | |
2772 | ||
2773 | static bfd_boolean | |
2774 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * dat) | |
2775 | { | |
2776 | struct bfd_link_info *info; | |
2777 | struct elf32_mb_link_hash_table *htab; | |
2778 | struct elf32_mb_link_hash_entry *eh; | |
3bf083ed | 2779 | struct elf_dyn_relocs *p; |
7ba29e2a NC |
2780 | |
2781 | if (h->root.type == bfd_link_hash_indirect) | |
2782 | return TRUE; | |
2783 | ||
7ba29e2a NC |
2784 | info = (struct bfd_link_info *) dat; |
2785 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
2786 | if (htab == NULL) |
2787 | return FALSE; | |
7ba29e2a NC |
2788 | |
2789 | if (htab->elf.dynamic_sections_created | |
2790 | && h->plt.refcount > 0) | |
2791 | { | |
2792 | /* Make sure this symbol is output as a dynamic symbol. | |
2793 | Undefined weak syms won't yet be marked as dynamic. */ | |
2794 | if (h->dynindx == -1 | |
07d6d2b8 AM |
2795 | && !h->forced_local) |
2796 | { | |
2797 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2798 | return FALSE; | |
2799 | } | |
7ba29e2a | 2800 | |
0e1862bb | 2801 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
07d6d2b8 AM |
2802 | { |
2803 | asection *s = htab->elf.splt; | |
2804 | ||
2805 | /* The first entry in .plt is reserved. */ | |
2806 | if (s->size == 0) | |
2807 | s->size = PLT_ENTRY_SIZE; | |
2808 | ||
2809 | h->plt.offset = s->size; | |
2810 | ||
2811 | /* If this symbol is not defined in a regular file, and we are | |
2812 | not generating a shared library, then set the symbol to this | |
2813 | location in the .plt. This is required to make function | |
2814 | pointers compare as equal between the normal executable and | |
2815 | the shared library. */ | |
2816 | if (! bfd_link_pic (info) | |
2817 | && !h->def_regular) | |
2818 | { | |
2819 | h->root.u.def.section = s; | |
2820 | h->root.u.def.value = h->plt.offset; | |
2821 | } | |
2822 | ||
2823 | /* Make room for this entry. */ | |
2824 | s->size += PLT_ENTRY_SIZE; | |
2825 | ||
2826 | /* We also need to make an entry in the .got.plt section, which | |
2827 | will be placed in the .got section by the linker script. */ | |
ce558b89 | 2828 | htab->elf.sgotplt->size += 4; |
7ba29e2a | 2829 | |
07d6d2b8 AM |
2830 | /* We also need to make an entry in the .rel.plt section. */ |
2831 | htab->elf.srelplt->size += sizeof (Elf32_External_Rela); | |
2832 | } | |
7ba29e2a | 2833 | else |
07d6d2b8 AM |
2834 | { |
2835 | h->plt.offset = (bfd_vma) -1; | |
2836 | h->needs_plt = 0; | |
2837 | } | |
7ba29e2a NC |
2838 | } |
2839 | else | |
2840 | { | |
2841 | h->plt.offset = (bfd_vma) -1; | |
2842 | h->needs_plt = 0; | |
2843 | } | |
2844 | ||
69b06cc8 | 2845 | eh = (struct elf32_mb_link_hash_entry *) h; |
7ba29e2a NC |
2846 | if (h->got.refcount > 0) |
2847 | { | |
69b06cc8 | 2848 | unsigned int need; |
7ba29e2a NC |
2849 | asection *s; |
2850 | ||
2851 | /* Make sure this symbol is output as a dynamic symbol. | |
07d6d2b8 | 2852 | Undefined weak syms won't yet be marked as dynamic. */ |
7ba29e2a | 2853 | if (h->dynindx == -1 |
07d6d2b8 AM |
2854 | && !h->forced_local) |
2855 | { | |
2856 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2857 | return FALSE; | |
2858 | } | |
7ba29e2a | 2859 | |
69b06cc8 ME |
2860 | need = 0; |
2861 | if ((eh->tls_mask & TLS_TLS) != 0) | |
07d6d2b8 AM |
2862 | { |
2863 | /* Handle TLS Symbol */ | |
2864 | if ((eh->tls_mask & TLS_LD) != 0) | |
2865 | { | |
2866 | if (!eh->elf.def_dynamic) | |
2867 | /* We'll just use htab->tlsld_got.offset. This should | |
2868 | always be the case. It's a little odd if we have | |
2869 | a local dynamic reloc against a non-local symbol. */ | |
2870 | htab->tlsld_got.refcount += 1; | |
2871 | else | |
2872 | need += 8; | |
2873 | } | |
2874 | if ((eh->tls_mask & TLS_GD) != 0) | |
2875 | need += 8; | |
2876 | } | |
69b06cc8 | 2877 | else |
07d6d2b8 AM |
2878 | { |
2879 | /* Regular (non-TLS) symbol */ | |
2880 | need += 4; | |
2881 | } | |
69b06cc8 | 2882 | if (need == 0) |
07d6d2b8 AM |
2883 | { |
2884 | h->got.offset = (bfd_vma) -1; | |
2885 | } | |
69b06cc8 | 2886 | else |
07d6d2b8 AM |
2887 | { |
2888 | s = htab->elf.sgot; | |
2889 | h->got.offset = s->size; | |
2890 | s->size += need; | |
2891 | htab->elf.srelgot->size += need * (sizeof (Elf32_External_Rela) / 4); | |
2892 | } | |
7ba29e2a NC |
2893 | } |
2894 | else | |
2895 | h->got.offset = (bfd_vma) -1; | |
2896 | ||
190eb1dd | 2897 | if (h->dyn_relocs == NULL) |
7ba29e2a NC |
2898 | return TRUE; |
2899 | ||
2900 | /* In the shared -Bsymbolic case, discard space allocated for | |
2901 | dynamic pc-relative relocs against symbols which turn out to be | |
2902 | defined in regular objects. For the normal shared case, discard | |
2903 | space for pc-relative relocs that have become local due to symbol | |
2904 | visibility changes. */ | |
2905 | ||
0e1862bb | 2906 | if (bfd_link_pic (info)) |
7ba29e2a NC |
2907 | { |
2908 | if (h->def_regular | |
2909 | && (h->forced_local | |
2910 | || info->symbolic)) | |
2911 | { | |
3bf083ed | 2912 | struct elf_dyn_relocs **pp; |
7ba29e2a | 2913 | |
190eb1dd | 2914 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
7ba29e2a NC |
2915 | { |
2916 | p->count -= p->pc_count; | |
2917 | p->pc_count = 0; | |
2918 | if (p->count == 0) | |
2919 | *pp = p->next; | |
2920 | else | |
2921 | pp = &p->next; | |
2922 | } | |
2923 | } | |
112fef40 | 2924 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 2925 | h->dyn_relocs = NULL; |
7ba29e2a NC |
2926 | } |
2927 | else | |
2928 | { | |
2929 | /* For the non-shared case, discard space for relocs against | |
2930 | symbols which turn out to need copy relocs or are not | |
2931 | dynamic. */ | |
2932 | ||
2933 | if (!h->non_got_ref | |
2934 | && ((h->def_dynamic | |
2935 | && !h->def_regular) | |
2936 | || (htab->elf.dynamic_sections_created | |
2937 | && (h->root.type == bfd_link_hash_undefweak | |
2938 | || h->root.type == bfd_link_hash_undefined)))) | |
2939 | { | |
2940 | /* Make sure this symbol is output as a dynamic symbol. | |
2941 | Undefined weak syms won't yet be marked as dynamic. */ | |
2942 | if (h->dynindx == -1 | |
2943 | && !h->forced_local) | |
2944 | { | |
2945 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2946 | return FALSE; | |
2947 | } | |
2948 | ||
2949 | /* If that succeeded, we know we'll be keeping all the | |
2950 | relocs. */ | |
2951 | if (h->dynindx != -1) | |
2952 | goto keep; | |
2953 | } | |
2954 | ||
190eb1dd | 2955 | h->dyn_relocs = NULL; |
7ba29e2a NC |
2956 | |
2957 | keep: ; | |
2958 | } | |
2959 | ||
2960 | /* Finally, allocate space. */ | |
190eb1dd | 2961 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
7ba29e2a NC |
2962 | { |
2963 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
2964 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
2965 | } | |
2966 | ||
2967 | return TRUE; | |
2968 | } | |
2969 | ||
2970 | /* Set the sizes of the dynamic sections. */ | |
2971 | ||
2972 | static bfd_boolean | |
2973 | microblaze_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
2974 | struct bfd_link_info *info) | |
2975 | { | |
2976 | struct elf32_mb_link_hash_table *htab; | |
2977 | bfd *dynobj; | |
2978 | asection *s; | |
2979 | bfd *ibfd; | |
2980 | ||
2981 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
2982 | if (htab == NULL) |
2983 | return FALSE; | |
2984 | ||
7ba29e2a NC |
2985 | dynobj = htab->elf.dynobj; |
2986 | BFD_ASSERT (dynobj != NULL); | |
2987 | ||
2988 | /* Set up .got offsets for local syms, and space for local dynamic | |
2989 | relocs. */ | |
c72f2fb2 | 2990 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
7ba29e2a NC |
2991 | { |
2992 | bfd_signed_vma *local_got; | |
2993 | bfd_signed_vma *end_local_got; | |
2994 | bfd_size_type locsymcount; | |
2995 | Elf_Internal_Shdr *symtab_hdr; | |
69b06cc8 | 2996 | unsigned char *lgot_masks; |
7ba29e2a NC |
2997 | asection *srel; |
2998 | ||
2999 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
07d6d2b8 | 3000 | continue; |
7ba29e2a NC |
3001 | |
3002 | for (s = ibfd->sections; s != NULL; s = s->next) | |
3003 | { | |
3bf083ed | 3004 | struct elf_dyn_relocs *p; |
7ba29e2a | 3005 | |
3bf083ed | 3006 | for (p = ((struct elf_dyn_relocs *) |
7ba29e2a NC |
3007 | elf_section_data (s)->local_dynrel); |
3008 | p != NULL; | |
3009 | p = p->next) | |
3010 | { | |
3011 | if (!bfd_is_abs_section (p->sec) | |
3012 | && bfd_is_abs_section (p->sec->output_section)) | |
3013 | { | |
3014 | /* Input section has been discarded, either because | |
3015 | it is a copy of a linkonce section or due to | |
3016 | linker script /DISCARD/, so we'll be discarding | |
3017 | the relocs too. */ | |
3018 | } | |
3019 | else if (p->count != 0) | |
3020 | { | |
3021 | srel = elf_section_data (p->sec)->sreloc; | |
3022 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
3023 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
3024 | info->flags |= DF_TEXTREL; | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | local_got = elf_local_got_refcounts (ibfd); | |
3030 | if (!local_got) | |
07d6d2b8 | 3031 | continue; |
7ba29e2a NC |
3032 | |
3033 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3034 | locsymcount = symtab_hdr->sh_info; | |
3035 | end_local_got = local_got + locsymcount; | |
69b06cc8 | 3036 | lgot_masks = (unsigned char *) end_local_got; |
ce558b89 AM |
3037 | s = htab->elf.sgot; |
3038 | srel = htab->elf.srelgot; | |
7ba29e2a | 3039 | |
69b06cc8 ME |
3040 | for (; local_got < end_local_got; ++local_got, ++lgot_masks) |
3041 | { | |
3042 | if (*local_got > 0) | |
3043 | { | |
3044 | unsigned int need = 0; | |
3045 | if ((*lgot_masks & TLS_TLS) != 0) | |
3046 | { | |
3047 | if ((*lgot_masks & TLS_GD) != 0) | |
3048 | need += 8; | |
3049 | if ((*lgot_masks & TLS_LD) != 0) | |
3050 | htab->tlsld_got.refcount += 1; | |
3051 | } | |
3052 | else | |
3053 | need += 4; | |
3054 | ||
3055 | if (need == 0) | |
3056 | { | |
3057 | *local_got = (bfd_vma) -1; | |
3058 | } | |
3059 | else | |
3060 | { | |
3061 | *local_got = s->size; | |
3062 | s->size += need; | |
0e1862bb | 3063 | if (bfd_link_pic (info)) |
69b06cc8 ME |
3064 | srel->size += need * (sizeof (Elf32_External_Rela) / 4); |
3065 | } | |
07d6d2b8 AM |
3066 | } |
3067 | else | |
3068 | *local_got = (bfd_vma) -1; | |
3069 | } | |
7ba29e2a NC |
3070 | } |
3071 | ||
3072 | /* Allocate global sym .plt and .got entries, and space for global | |
3073 | sym dynamic relocs. */ | |
3074 | elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info); | |
3075 | ||
69b06cc8 ME |
3076 | if (htab->tlsld_got.refcount > 0) |
3077 | { | |
ce558b89 AM |
3078 | htab->tlsld_got.offset = htab->elf.sgot->size; |
3079 | htab->elf.sgot->size += 8; | |
0e1862bb | 3080 | if (bfd_link_pic (info)) |
07d6d2b8 | 3081 | htab->elf.srelgot->size += sizeof (Elf32_External_Rela); |
69b06cc8 ME |
3082 | } |
3083 | else | |
3084 | htab->tlsld_got.offset = (bfd_vma) -1; | |
3085 | ||
7ba29e2a NC |
3086 | if (elf_hash_table (info)->dynamic_sections_created) |
3087 | { | |
3088 | /* Make space for the trailing nop in .plt. */ | |
ce558b89 | 3089 | if (htab->elf.splt->size > 0) |
07d6d2b8 | 3090 | htab->elf.splt->size += 4; |
7ba29e2a NC |
3091 | } |
3092 | ||
3093 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3094 | determined the sizes of the various dynamic sections. Allocate | |
3095 | memory for them. */ | |
3096 | for (s = dynobj->sections; s != NULL; s = s->next) | |
3097 | { | |
3098 | const char *name; | |
3099 | bfd_boolean strip = FALSE; | |
3100 | ||
3101 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
07d6d2b8 | 3102 | continue; |
7ba29e2a NC |
3103 | |
3104 | /* It's OK to base decisions on the section name, because none | |
07d6d2b8 | 3105 | of the dynobj section names depend upon the input files. */ |
fd361982 | 3106 | name = bfd_section_name (s); |
7ba29e2a NC |
3107 | |
3108 | if (strncmp (name, ".rela", 5) == 0) | |
07d6d2b8 AM |
3109 | { |
3110 | if (s->size == 0) | |
3111 | { | |
3112 | /* If we don't need this section, strip it from the | |
3113 | output file. This is to handle .rela.bss and | |
3114 | .rela.plt. We must create it in | |
3115 | create_dynamic_sections, because it must be created | |
3116 | before the linker maps input sections to output | |
3117 | sections. The linker does that before | |
3118 | adjust_dynamic_symbol is called, and it is that | |
3119 | function which decides whether anything needs to go | |
3120 | into these sections. */ | |
3121 | strip = TRUE; | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | /* We use the reloc_count field as a counter if we need | |
3126 | to copy relocs into the output file. */ | |
3127 | s->reloc_count = 0; | |
3128 | } | |
3129 | } | |
ce558b89 AM |
3130 | else if (s != htab->elf.splt |
3131 | && s != htab->elf.sgot | |
5474d94f AM |
3132 | && s != htab->elf.sgotplt |
3133 | && s != htab->elf.sdynbss | |
3134 | && s != htab->elf.sdynrelro) | |
07d6d2b8 AM |
3135 | { |
3136 | /* It's not one of our sections, so don't allocate space. */ | |
3137 | continue; | |
3138 | } | |
7ba29e2a NC |
3139 | |
3140 | if (strip) | |
07d6d2b8 AM |
3141 | { |
3142 | s->flags |= SEC_EXCLUDE; | |
3143 | continue; | |
3144 | } | |
7ba29e2a NC |
3145 | |
3146 | /* Allocate memory for the section contents. */ | |
3147 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. | |
07d6d2b8 AM |
3148 | Unused entries should be reclaimed before the section's contents |
3149 | are written out, but at the moment this does not happen. Thus in | |
3150 | order to prevent writing out garbage, we initialise the section's | |
3151 | contents to zero. */ | |
7ba29e2a NC |
3152 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
3153 | if (s->contents == NULL && s->size != 0) | |
07d6d2b8 | 3154 | return FALSE; |
7ba29e2a NC |
3155 | } |
3156 | ||
3157 | if (elf_hash_table (info)->dynamic_sections_created) | |
3158 | { | |
3159 | /* Add some entries to the .dynamic section. We fill in the | |
3160 | values later, in microblaze_elf_finish_dynamic_sections, but we | |
3161 | must add the entries now so that we get the correct size for | |
3162 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3163 | dynamic linker and used by the debugger. */ | |
3164 | #define add_dynamic_entry(TAG, VAL) \ | |
3165 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
3166 | ||
0e1862bb | 3167 | if (bfd_link_executable (info)) |
07d6d2b8 AM |
3168 | { |
3169 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
3170 | return FALSE; | |
3171 | } | |
7ba29e2a NC |
3172 | |
3173 | if (!add_dynamic_entry (DT_RELA, 0) | |
07d6d2b8 AM |
3174 | || !add_dynamic_entry (DT_RELASZ, 0) |
3175 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
7ba29e2a NC |
3176 | return FALSE; |
3177 | ||
ce558b89 | 3178 | if (htab->elf.splt->size != 0) |
07d6d2b8 AM |
3179 | { |
3180 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
3181 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3182 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3183 | || !add_dynamic_entry (DT_JMPREL, 0) | |
3184 | || !add_dynamic_entry (DT_BIND_NOW, 1)) | |
3185 | return FALSE; | |
3186 | } | |
7ba29e2a NC |
3187 | |
3188 | if (info->flags & DF_TEXTREL) | |
07d6d2b8 AM |
3189 | { |
3190 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
3191 | return FALSE; | |
3192 | } | |
7ba29e2a NC |
3193 | } |
3194 | #undef add_dynamic_entry | |
3195 | return TRUE; | |
3196 | } | |
3197 | ||
3198 | /* Finish up dynamic symbol handling. We set the contents of various | |
3199 | dynamic sections here. */ | |
3200 | ||
3201 | static bfd_boolean | |
3202 | microblaze_elf_finish_dynamic_symbol (bfd *output_bfd, | |
3203 | struct bfd_link_info *info, | |
3204 | struct elf_link_hash_entry *h, | |
3205 | Elf_Internal_Sym *sym) | |
3206 | { | |
7ba29e2a | 3207 | struct elf32_mb_link_hash_table *htab; |
69b06cc8 | 3208 | struct elf32_mb_link_hash_entry *eh = elf32_mb_hash_entry(h); |
7ba29e2a NC |
3209 | |
3210 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
3211 | if (htab == NULL) |
3212 | return FALSE; | |
3213 | ||
7ba29e2a NC |
3214 | if (h->plt.offset != (bfd_vma) -1) |
3215 | { | |
3216 | asection *splt; | |
3217 | asection *srela; | |
3218 | asection *sgotplt; | |
3219 | Elf_Internal_Rela rela; | |
3220 | bfd_byte *loc; | |
3221 | bfd_vma plt_index; | |
3222 | bfd_vma got_offset; | |
3223 | bfd_vma got_addr; | |
3224 | ||
3225 | /* This symbol has an entry in the procedure linkage table. Set | |
07d6d2b8 | 3226 | it up. */ |
7ba29e2a NC |
3227 | BFD_ASSERT (h->dynindx != -1); |
3228 | ||
ce558b89 AM |
3229 | splt = htab->elf.splt; |
3230 | srela = htab->elf.srelplt; | |
3231 | sgotplt = htab->elf.sgotplt; | |
7ba29e2a NC |
3232 | BFD_ASSERT (splt != NULL && srela != NULL && sgotplt != NULL); |
3233 | ||
3234 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; /* first entry reserved. */ | |
3235 | got_offset = (plt_index + 3) * 4; /* 3 reserved ??? */ | |
3236 | got_addr = got_offset; | |
3237 | ||
3238 | /* For non-PIC objects we need absolute address of the GOT entry. */ | |
0e1862bb | 3239 | if (!bfd_link_pic (info)) |
07d6d2b8 | 3240 | got_addr += sgotplt->output_section->vma + sgotplt->output_offset; |
7ba29e2a NC |
3241 | |
3242 | /* Fill in the entry in the procedure linkage table. */ | |
3243 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD_0 + ((got_addr >> 16) & 0xffff), | |
07d6d2b8 | 3244 | splt->contents + h->plt.offset); |
0e1862bb | 3245 | if (bfd_link_pic (info)) |
07d6d2b8 AM |
3246 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1 + (got_addr & 0xffff), |
3247 | splt->contents + h->plt.offset + 4); | |
7ba29e2a | 3248 | else |
07d6d2b8 AM |
3249 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD_1_NOPIC + (got_addr & 0xffff), |
3250 | splt->contents + h->plt.offset + 4); | |
7ba29e2a | 3251 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_2, |
07d6d2b8 | 3252 | splt->contents + h->plt.offset + 8); |
7ba29e2a | 3253 | bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD_3, |
07d6d2b8 | 3254 | splt->contents + h->plt.offset + 12); |
7ba29e2a NC |
3255 | |
3256 | /* Any additions to the .got section??? */ | |
3257 | /* bfd_put_32 (output_bfd, | |
3258 | splt->output_section->vma + splt->output_offset + h->plt.offset + 4, | |
3259 | sgotplt->contents + got_offset); */ | |
3260 | ||
3261 | /* Fill in the entry in the .rela.plt section. */ | |
3262 | rela.r_offset = (sgotplt->output_section->vma | |
07d6d2b8 AM |
3263 | + sgotplt->output_offset |
3264 | + got_offset); | |
7ba29e2a NC |
3265 | rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_JUMP_SLOT); |
3266 | rela.r_addend = 0; | |
3267 | loc = srela->contents; | |
3268 | loc += plt_index * sizeof (Elf32_External_Rela); | |
3269 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3270 | ||
3271 | if (!h->def_regular) | |
07d6d2b8 AM |
3272 | { |
3273 | /* Mark the symbol as undefined, rather than as defined in | |
3274 | the .plt section. Zero the value. */ | |
3275 | sym->st_shndx = SHN_UNDEF; | |
3276 | sym->st_value = 0; | |
3277 | } | |
7ba29e2a NC |
3278 | } |
3279 | ||
69b06cc8 ME |
3280 | /* h->got.refcount to be checked ? */ |
3281 | if (h->got.offset != (bfd_vma) -1 && | |
3282 | ! ((h->got.offset & 1) || | |
07d6d2b8 | 3283 | IS_TLS_LD(eh->tls_mask) || IS_TLS_GD(eh->tls_mask))) |
7ba29e2a NC |
3284 | { |
3285 | asection *sgot; | |
3286 | asection *srela; | |
69b06cc8 | 3287 | bfd_vma offset; |
7ba29e2a NC |
3288 | |
3289 | /* This symbol has an entry in the global offset table. Set it | |
07d6d2b8 | 3290 | up. */ |
7ba29e2a | 3291 | |
ce558b89 AM |
3292 | sgot = htab->elf.sgot; |
3293 | srela = htab->elf.srelgot; | |
7ba29e2a NC |
3294 | BFD_ASSERT (sgot != NULL && srela != NULL); |
3295 | ||
69b06cc8 | 3296 | offset = (sgot->output_section->vma + sgot->output_offset |
47993b4a | 3297 | + (h->got.offset &~ (bfd_vma) 1)); |
7ba29e2a NC |
3298 | |
3299 | /* If this is a -Bsymbolic link, and the symbol is defined | |
07d6d2b8 AM |
3300 | locally, we just want to emit a RELATIVE reloc. Likewise if |
3301 | the symbol was forced to be local because of a version file. | |
3302 | The entry in the global offset table will already have been | |
3303 | initialized in the relocate_section function. */ | |
0e1862bb | 3304 | if (bfd_link_pic (info) |
07d6d2b8 | 3305 | && ((info->symbolic && h->def_regular) |
47993b4a | 3306 | || h->dynindx == -1)) |
07d6d2b8 AM |
3307 | { |
3308 | asection *sec = h->root.u.def.section; | |
bd757ca7 NC |
3309 | bfd_vma value; |
3310 | ||
3311 | value = h->root.u.def.value; | |
3312 | if (sec->output_section != NULL) | |
3313 | /* PR 21180: If the output section is NULL, then the symbol is no | |
3314 | longer needed, and in theory the GOT entry is redundant. But | |
3315 | it is too late to change our minds now... */ | |
3316 | value += sec->output_section->vma + sec->output_offset; | |
3317 | ||
07d6d2b8 AM |
3318 | microblaze_elf_output_dynamic_relocation (output_bfd, |
3319 | srela, srela->reloc_count++, | |
3320 | /* symindex= */ 0, | |
3321 | R_MICROBLAZE_REL, offset, | |
3322 | value); | |
3323 | } | |
7ba29e2a | 3324 | else |
07d6d2b8 AM |
3325 | { |
3326 | microblaze_elf_output_dynamic_relocation (output_bfd, | |
3327 | srela, srela->reloc_count++, | |
3328 | h->dynindx, | |
3329 | R_MICROBLAZE_GLOB_DAT, | |
3330 | offset, 0); | |
3331 | } | |
7ba29e2a NC |
3332 | |
3333 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
07d6d2b8 | 3334 | sgot->contents + (h->got.offset &~ (bfd_vma) 1)); |
7ba29e2a NC |
3335 | } |
3336 | ||
3337 | if (h->needs_copy) | |
3338 | { | |
3339 | asection *s; | |
3340 | Elf_Internal_Rela rela; | |
3341 | bfd_byte *loc; | |
3342 | ||
3343 | /* This symbols needs a copy reloc. Set it up. */ | |
3344 | ||
3345 | BFD_ASSERT (h->dynindx != -1); | |
3346 | ||
7ba29e2a | 3347 | rela.r_offset = (h->root.u.def.value |
07d6d2b8 AM |
3348 | + h->root.u.def.section->output_section->vma |
3349 | + h->root.u.def.section->output_offset); | |
7ba29e2a NC |
3350 | rela.r_info = ELF32_R_INFO (h->dynindx, R_MICROBLAZE_COPY); |
3351 | rela.r_addend = 0; | |
afbf7e8e | 3352 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3353 | s = htab->elf.sreldynrelro; |
3354 | else | |
3355 | s = htab->elf.srelbss; | |
7ba29e2a NC |
3356 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
3357 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
3358 | } | |
3359 | ||
3360 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef L |
3361 | if (h == htab->elf.hdynamic |
3362 | || h == htab->elf.hgot | |
3363 | || h == htab->elf.hplt) | |
7ba29e2a NC |
3364 | sym->st_shndx = SHN_ABS; |
3365 | ||
3366 | return TRUE; | |
3367 | } | |
3368 | ||
3369 | ||
3370 | /* Finish up the dynamic sections. */ | |
3371 | ||
3372 | static bfd_boolean | |
3373 | microblaze_elf_finish_dynamic_sections (bfd *output_bfd, | |
3374 | struct bfd_link_info *info) | |
3375 | { | |
3376 | bfd *dynobj; | |
3377 | asection *sdyn, *sgot; | |
3378 | struct elf32_mb_link_hash_table *htab; | |
3379 | ||
3380 | htab = elf32_mb_hash_table (info); | |
4dfe6ac6 NC |
3381 | if (htab == NULL) |
3382 | return FALSE; | |
3383 | ||
7ba29e2a NC |
3384 | dynobj = htab->elf.dynobj; |
3385 | ||
3d4d4302 | 3386 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
7ba29e2a NC |
3387 | |
3388 | if (htab->elf.dynamic_sections_created) | |
3389 | { | |
3390 | asection *splt; | |
3391 | Elf32_External_Dyn *dyncon, *dynconend; | |
3392 | ||
7ba29e2a NC |
3393 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
3394 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
3395 | for (; dyncon < dynconend; dyncon++) | |
07d6d2b8 AM |
3396 | { |
3397 | Elf_Internal_Dyn dyn; | |
64f52338 | 3398 | asection *s; |
07d6d2b8 | 3399 | bfd_boolean size; |
7ba29e2a | 3400 | |
07d6d2b8 | 3401 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
7ba29e2a | 3402 | |
07d6d2b8 AM |
3403 | switch (dyn.d_tag) |
3404 | { | |
64f52338 AM |
3405 | case DT_PLTGOT: |
3406 | s = htab->elf.sgotplt; | |
3407 | size = FALSE; | |
3408 | break; | |
7ba29e2a | 3409 | |
64f52338 AM |
3410 | case DT_PLTRELSZ: |
3411 | s = htab->elf.srelplt; | |
3412 | size = TRUE; | |
3413 | break; | |
7ba29e2a | 3414 | |
64f52338 AM |
3415 | case DT_JMPREL: |
3416 | s = htab->elf.srelplt; | |
3417 | size = FALSE; | |
3418 | break; | |
3419 | ||
3420 | default: | |
3421 | continue; | |
07d6d2b8 | 3422 | } |
64f52338 AM |
3423 | |
3424 | if (s == NULL) | |
3425 | dyn.d_un.d_val = 0; | |
3426 | else | |
3427 | { | |
3428 | if (!size) | |
3429 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
3430 | else | |
3431 | dyn.d_un.d_val = s->size; | |
3432 | } | |
3433 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
07d6d2b8 | 3434 | } |
7ba29e2a | 3435 | |
64f52338 AM |
3436 | splt = htab->elf.splt; |
3437 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
3438 | ||
7ba29e2a NC |
3439 | /* Clear the first entry in the procedure linkage table, |
3440 | and put a nop in the last four bytes. */ | |
3441 | if (splt->size > 0) | |
07d6d2b8 AM |
3442 | { |
3443 | memset (splt->contents, 0, PLT_ENTRY_SIZE); | |
3444 | bfd_put_32 (output_bfd, (bfd_vma) 0x80000000 /* nop. */, | |
3445 | splt->contents + splt->size - 4); | |
7ba29e2a | 3446 | |
94667ab1 AM |
3447 | if (splt->output_section != bfd_abs_section_ptr) |
3448 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
3449 | } | |
7ba29e2a NC |
3450 | } |
3451 | ||
3452 | /* Set the first entry in the global offset table to the address of | |
3453 | the dynamic section. */ | |
ce558b89 | 3454 | sgot = htab->elf.sgotplt; |
7ba29e2a NC |
3455 | if (sgot && sgot->size > 0) |
3456 | { | |
3457 | if (sdyn == NULL) | |
07d6d2b8 | 3458 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
7ba29e2a | 3459 | else |
07d6d2b8 AM |
3460 | bfd_put_32 (output_bfd, |
3461 | sdyn->output_section->vma + sdyn->output_offset, | |
3462 | sgot->contents); | |
7ba29e2a NC |
3463 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
3464 | } | |
3465 | ||
ce558b89 AM |
3466 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
3467 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
7ba29e2a NC |
3468 | |
3469 | return TRUE; | |
3470 | } | |
3471 | ||
3472 | /* Hook called by the linker routine which adds symbols from an object | |
3473 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
3474 | ||
3475 | static bfd_boolean | |
3476 | microblaze_elf_add_symbol_hook (bfd *abfd, | |
07d6d2b8 AM |
3477 | struct bfd_link_info *info, |
3478 | Elf_Internal_Sym *sym, | |
3479 | const char **namep ATTRIBUTE_UNUSED, | |
3480 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3481 | asection **secp, | |
3482 | bfd_vma *valp) | |
7ba29e2a NC |
3483 | { |
3484 | if (sym->st_shndx == SHN_COMMON | |
0e1862bb | 3485 | && !bfd_link_relocatable (info) |
7ba29e2a NC |
3486 | && sym->st_size <= elf_gp_size (abfd)) |
3487 | { | |
3488 | /* Common symbols less than or equal to -G nn bytes are automatically | |
3489 | put into .sbss. */ | |
3d4d4302 | 3490 | *secp = bfd_make_section_old_way (abfd, ".sbss"); |
7ba29e2a | 3491 | if (*secp == NULL |
fd361982 | 3492 | || !bfd_set_section_flags (*secp, SEC_IS_COMMON)) |
07d6d2b8 | 3493 | return FALSE; |
7ba29e2a NC |
3494 | |
3495 | *valp = sym->st_size; | |
3496 | } | |
3497 | ||
3498 | return TRUE; | |
3499 | } | |
3500 | ||
6d00b590 | 3501 | #define TARGET_LITTLE_SYM microblaze_elf32_le_vec |
f23200ad | 3502 | #define TARGET_LITTLE_NAME "elf32-microblazeel" |
7ba29e2a | 3503 | |
07d6d2b8 | 3504 | #define TARGET_BIG_SYM microblaze_elf32_vec |
7ba29e2a NC |
3505 | #define TARGET_BIG_NAME "elf32-microblaze" |
3506 | ||
3507 | #define ELF_ARCH bfd_arch_microblaze | |
ae95ffa6 | 3508 | #define ELF_TARGET_ID MICROBLAZE_ELF_DATA |
7ba29e2a NC |
3509 | #define ELF_MACHINE_CODE EM_MICROBLAZE |
3510 | #define ELF_MACHINE_ALT1 EM_MICROBLAZE_OLD | |
69b06cc8 | 3511 | #define ELF_MAXPAGESIZE 0x1000 |
7ba29e2a NC |
3512 | #define elf_info_to_howto microblaze_elf_info_to_howto |
3513 | #define elf_info_to_howto_rel NULL | |
3514 | ||
3515 | #define bfd_elf32_bfd_reloc_type_lookup microblaze_elf_reloc_type_lookup | |
07d6d2b8 | 3516 | #define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name |
7ba29e2a | 3517 | #define elf_backend_relocate_section microblaze_elf_relocate_section |
07d6d2b8 AM |
3518 | #define bfd_elf32_bfd_relax_section microblaze_elf_relax_section |
3519 | #define bfd_elf32_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match | |
7ba29e2a NC |
3520 | #define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup |
3521 | ||
3522 | #define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook | |
07d6d2b8 AM |
3523 | #define elf_backend_check_relocs microblaze_elf_check_relocs |
3524 | #define elf_backend_copy_indirect_symbol microblaze_elf_copy_indirect_symbol | |
3525 | #define bfd_elf32_bfd_link_hash_table_create microblaze_elf_link_hash_table_create | |
7ba29e2a | 3526 | #define elf_backend_can_gc_sections 1 |
07d6d2b8 AM |
3527 | #define elf_backend_can_refcount 1 |
3528 | #define elf_backend_want_got_plt 1 | |
3529 | #define elf_backend_plt_readonly 1 | |
3530 | #define elf_backend_got_header_size 12 | |
5474d94f | 3531 | #define elf_backend_want_dynrelro 1 |
07d6d2b8 | 3532 | #define elf_backend_rela_normal 1 |
64f52338 | 3533 | #define elf_backend_dtrel_excludes_plt 1 |
7ba29e2a | 3534 | |
07d6d2b8 AM |
3535 | #define elf_backend_adjust_dynamic_symbol microblaze_elf_adjust_dynamic_symbol |
3536 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections | |
3537 | #define elf_backend_finish_dynamic_sections microblaze_elf_finish_dynamic_sections | |
3538 | #define elf_backend_finish_dynamic_symbol microblaze_elf_finish_dynamic_symbol | |
3539 | #define elf_backend_size_dynamic_sections microblaze_elf_size_dynamic_sections | |
7ba29e2a NC |
3540 | #define elf_backend_add_symbol_hook microblaze_elf_add_symbol_hook |
3541 | ||
3542 | #include "elf32-target.h" |