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Commit | Line | Data |
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3b55e94a | 1 | /* ADI Blackfin BFD support for 32-bit ELF. |
fd67aa11 | 2 | Copyright (C) 2005-2024 Free Software Foundation, Inc. |
0f64bb02 CM |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
0f64bb02 CM |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
0f64bb02 | 20 | |
0f64bb02 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
0f64bb02 CM |
23 | #include "libbfd.h" |
24 | #include "elf-bfd.h" | |
25 | #include "elf/bfin.h" | |
fa8f86ff | 26 | #include "dwarf2.h" |
48d502e1 | 27 | #include "hashtab.h" |
8410a658 | 28 | #include "elf32-bfin.h" |
0f64bb02 | 29 | |
0f64bb02 CM |
30 | /* FUNCTION : bfin_pltpc_reloc |
31 | ABSTRACT : TODO : figure out how to handle pltpc relocs. */ | |
32 | static bfd_reloc_status_type | |
33 | bfin_pltpc_reloc ( | |
34 | bfd *abfd ATTRIBUTE_UNUSED, | |
35 | arelent *reloc_entry ATTRIBUTE_UNUSED, | |
36 | asymbol *symbol ATTRIBUTE_UNUSED, | |
2c3fc389 | 37 | void * data ATTRIBUTE_UNUSED, |
0f64bb02 CM |
38 | asection *input_section ATTRIBUTE_UNUSED, |
39 | bfd *output_bfd ATTRIBUTE_UNUSED, | |
3b55e94a | 40 | char **error_message ATTRIBUTE_UNUSED) |
0f64bb02 CM |
41 | { |
42 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
3b55e94a | 43 | return flag; |
0f64bb02 CM |
44 | } |
45 | \f | |
46 | ||
47 | static bfd_reloc_status_type | |
48 | bfin_pcrel24_reloc (bfd *abfd, | |
07d6d2b8 AM |
49 | arelent *reloc_entry, |
50 | asymbol *symbol, | |
51 | void * data, | |
52 | asection *input_section, | |
53 | bfd *output_bfd, | |
54 | char **error_message ATTRIBUTE_UNUSED) | |
0f64bb02 CM |
55 | { |
56 | bfd_vma relocation; | |
57 | bfd_size_type addr = reloc_entry->address; | |
58 | bfd_vma output_base = 0; | |
59 | reloc_howto_type *howto = reloc_entry->howto; | |
60 | asection *output_section; | |
0a1b45a2 | 61 | bool relocatable = (output_bfd != NULL); |
0f64bb02 | 62 | |
5d2834cc | 63 | if (!bfd_reloc_offset_in_range (howto, abfd, input_section, addr - 2)) |
0f64bb02 CM |
64 | return bfd_reloc_outofrange; |
65 | ||
3b55e94a BS |
66 | if (bfd_is_und_section (symbol->section) |
67 | && (symbol->flags & BSF_WEAK) == 0 | |
68 | && !relocatable) | |
69 | return bfd_reloc_undefined; | |
70 | ||
71 | if (bfd_is_com_section (symbol->section)) | |
72 | relocation = 0; | |
0f64bb02 | 73 | else |
3b55e94a | 74 | relocation = symbol->value; |
0f64bb02 | 75 | |
3b55e94a BS |
76 | output_section = symbol->section->output_section; |
77 | ||
78 | if (relocatable) | |
79 | output_base = 0; | |
80 | else | |
81 | output_base = output_section->vma; | |
82 | ||
83 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
84 | relocation += output_base + symbol->section->output_offset; | |
0f64bb02 | 85 | |
3b55e94a BS |
86 | if (!relocatable && !strcmp (symbol->name, symbol->section->name)) |
87 | relocation += reloc_entry->addend; | |
0f64bb02 | 88 | |
0f64bb02 CM |
89 | relocation -= input_section->output_section->vma + input_section->output_offset; |
90 | relocation -= reloc_entry->address; | |
91 | ||
92 | if (howto->complain_on_overflow != complain_overflow_dont) | |
93 | { | |
94 | bfd_reloc_status_type status; | |
3b55e94a BS |
95 | status = bfd_check_overflow (howto->complain_on_overflow, |
96 | howto->bitsize, | |
97 | howto->rightshift, | |
98 | bfd_arch_bits_per_address(abfd), | |
99 | relocation); | |
0f64bb02 CM |
100 | if (status != bfd_reloc_ok) |
101 | return status; | |
102 | } | |
3b55e94a | 103 | |
0f64bb02 CM |
104 | /* if rightshift is 1 and the number odd, return error. */ |
105 | if (howto->rightshift && (relocation & 0x01)) | |
106 | { | |
4eca0228 | 107 | _bfd_error_handler (_("relocation should be even number")); |
0f64bb02 CM |
108 | return bfd_reloc_overflow; |
109 | } | |
110 | ||
111 | relocation >>= (bfd_vma) howto->rightshift; | |
112 | /* Shift everything up to where it's going to be used. */ | |
113 | ||
114 | relocation <<= (bfd_vma) howto->bitpos; | |
115 | ||
116 | if (relocatable) | |
117 | { | |
118 | reloc_entry->address += input_section->output_offset; | |
119 | reloc_entry->addend += symbol->section->output_offset; | |
120 | } | |
121 | ||
122 | { | |
123 | short x; | |
124 | ||
125 | /* We are getting reloc_entry->address 2 byte off from | |
3b55e94a BS |
126 | the start of instruction. Assuming absolute postion |
127 | of the reloc data. But, following code had been written assuming | |
128 | reloc address is starting at begining of instruction. | |
129 | To compensate that I have increased the value of | |
130 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
0f64bb02 CM |
131 | |
132 | relocation += 1; | |
133 | x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2); | |
134 | x = (x & 0xff00) | ((relocation >> 16) & 0xff); | |
135 | bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2); | |
136 | ||
137 | x = bfd_get_16 (abfd, (bfd_byte *) data + addr); | |
138 | x = relocation & 0xFFFF; | |
139 | bfd_put_16 (abfd, x, (unsigned char *) data + addr ); | |
140 | } | |
141 | return bfd_reloc_ok; | |
142 | } | |
143 | ||
144 | static bfd_reloc_status_type | |
3b55e94a | 145 | bfin_imm16_reloc (bfd *abfd, |
4b24dd1a AM |
146 | arelent *reloc_entry, |
147 | asymbol *symbol, | |
148 | void * data, | |
149 | asection *input_section, | |
150 | bfd *output_bfd, | |
151 | char **error_message ATTRIBUTE_UNUSED) | |
0f64bb02 | 152 | { |
3b55e94a BS |
153 | bfd_vma relocation, x; |
154 | bfd_size_type reloc_addr = reloc_entry->address; | |
0f64bb02 | 155 | bfd_vma output_base = 0; |
3b55e94a | 156 | reloc_howto_type *howto = reloc_entry->howto; |
0f64bb02 | 157 | asection *output_section; |
0a1b45a2 | 158 | bool relocatable = (output_bfd != NULL); |
0f64bb02 | 159 | |
3b55e94a | 160 | /* Is the address of the relocation really within the section? */ |
5d2834cc | 161 | if (!bfd_reloc_offset_in_range (howto, abfd, input_section, reloc_addr)) |
3b55e94a BS |
162 | return bfd_reloc_outofrange; |
163 | ||
0f64bb02 CM |
164 | if (bfd_is_und_section (symbol->section) |
165 | && (symbol->flags & BSF_WEAK) == 0 | |
166 | && !relocatable) | |
167 | return bfd_reloc_undefined; | |
168 | ||
0f64bb02 | 169 | output_section = symbol->section->output_section; |
3b55e94a | 170 | relocation = symbol->value; |
0f64bb02 CM |
171 | |
172 | /* Convert input-section-relative symbol value to absolute. */ | |
173 | if (relocatable) | |
174 | output_base = 0; | |
175 | else | |
176 | output_base = output_section->vma; | |
177 | ||
3b55e94a | 178 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) |
0f64bb02 CM |
179 | relocation += output_base + symbol->section->output_offset; |
180 | ||
181 | /* Add in supplied addend. */ | |
182 | relocation += reloc_entry->addend; | |
183 | ||
184 | if (relocatable) | |
185 | { | |
186 | reloc_entry->address += input_section->output_offset; | |
187 | reloc_entry->addend += symbol->section->output_offset; | |
188 | } | |
0f64bb02 CM |
189 | else |
190 | { | |
191 | reloc_entry->addend = 0; | |
192 | } | |
193 | ||
194 | if (howto->complain_on_overflow != complain_overflow_dont) | |
195 | { | |
196 | bfd_reloc_status_type flag; | |
197 | flag = bfd_check_overflow (howto->complain_on_overflow, | |
3b55e94a BS |
198 | howto->bitsize, |
199 | howto->rightshift, | |
200 | bfd_arch_bits_per_address(abfd), | |
201 | relocation); | |
0f64bb02 | 202 | if (flag != bfd_reloc_ok) |
3b55e94a | 203 | return flag; |
0f64bb02 CM |
204 | } |
205 | ||
0f64bb02 CM |
206 | /* Here the variable relocation holds the final address of the |
207 | symbol we are relocating against, plus any addend. */ | |
208 | ||
0f64bb02 CM |
209 | relocation >>= (bfd_vma) howto->rightshift; |
210 | x = relocation; | |
211 | bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr); | |
212 | return bfd_reloc_ok; | |
213 | } | |
214 | ||
215 | ||
216 | static bfd_reloc_status_type | |
217 | bfin_byte4_reloc (bfd *abfd, | |
07d6d2b8 AM |
218 | arelent *reloc_entry, |
219 | asymbol *symbol, | |
220 | void * data, | |
221 | asection *input_section, | |
222 | bfd *output_bfd, | |
223 | char **error_message ATTRIBUTE_UNUSED) | |
0f64bb02 CM |
224 | { |
225 | bfd_vma relocation, x; | |
226 | bfd_size_type addr = reloc_entry->address; | |
227 | bfd_vma output_base = 0; | |
228 | asection *output_section; | |
0a1b45a2 | 229 | bool relocatable = (output_bfd != NULL); |
0f64bb02 CM |
230 | |
231 | /* Is the address of the relocation really within the section? */ | |
5d2834cc AM |
232 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, input_section, |
233 | addr)) | |
0f64bb02 CM |
234 | return bfd_reloc_outofrange; |
235 | ||
3b55e94a BS |
236 | if (bfd_is_und_section (symbol->section) |
237 | && (symbol->flags & BSF_WEAK) == 0 | |
238 | && !relocatable) | |
239 | return bfd_reloc_undefined; | |
0f64bb02 | 240 | |
3b55e94a BS |
241 | output_section = symbol->section->output_section; |
242 | relocation = symbol->value; | |
243 | /* Convert input-section-relative symbol value to absolute. */ | |
244 | if (relocatable) | |
245 | output_base = 0; | |
0f64bb02 | 246 | else |
3b55e94a BS |
247 | output_base = output_section->vma; |
248 | ||
249 | if ((symbol->name | |
250 | && symbol->section->name | |
251 | && !strcmp (symbol->name, symbol->section->name)) | |
252 | || !relocatable) | |
0f64bb02 | 253 | { |
3b55e94a | 254 | relocation += output_base + symbol->section->output_offset; |
0f64bb02 CM |
255 | } |
256 | ||
3b55e94a BS |
257 | relocation += reloc_entry->addend; |
258 | ||
0f64bb02 | 259 | if (relocatable) |
3b55e94a | 260 | { |
0f64bb02 CM |
261 | /* This output will be relocatable ... like ld -r. */ |
262 | reloc_entry->address += input_section->output_offset; | |
263 | reloc_entry->addend += symbol->section->output_offset; | |
264 | } | |
265 | else | |
266 | { | |
267 | reloc_entry->addend = 0; | |
268 | } | |
269 | ||
270 | /* Here the variable relocation holds the final address of the | |
271 | symbol we are relocating against, plus any addend. */ | |
272 | x = relocation & 0xFFFF0000; | |
273 | x >>=16; | |
274 | bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2); | |
3b55e94a | 275 | |
0f64bb02 CM |
276 | x = relocation & 0x0000FFFF; |
277 | bfd_put_16 (abfd, x, (unsigned char *) data + addr); | |
278 | return bfd_reloc_ok; | |
279 | } | |
280 | ||
281 | /* bfin_bfd_reloc handles the blackfin arithmetic relocations. | |
282 | Use this instead of bfd_perform_relocation. */ | |
283 | static bfd_reloc_status_type | |
284 | bfin_bfd_reloc (bfd *abfd, | |
285 | arelent *reloc_entry, | |
4b24dd1a AM |
286 | asymbol *symbol, |
287 | void * data, | |
288 | asection *input_section, | |
289 | bfd *output_bfd, | |
290 | char **error_message ATTRIBUTE_UNUSED) | |
0f64bb02 CM |
291 | { |
292 | bfd_vma relocation; | |
293 | bfd_size_type addr = reloc_entry->address; | |
294 | bfd_vma output_base = 0; | |
295 | reloc_howto_type *howto = reloc_entry->howto; | |
296 | asection *output_section; | |
0a1b45a2 | 297 | bool relocatable = (output_bfd != NULL); |
0f64bb02 CM |
298 | |
299 | /* Is the address of the relocation really within the section? */ | |
5d2834cc | 300 | if (!bfd_reloc_offset_in_range (howto, abfd, input_section, addr)) |
0f64bb02 CM |
301 | return bfd_reloc_outofrange; |
302 | ||
3b55e94a BS |
303 | if (bfd_is_und_section (symbol->section) |
304 | && (symbol->flags & BSF_WEAK) == 0 | |
305 | && !relocatable) | |
306 | return bfd_reloc_undefined; | |
307 | ||
308 | /* Get symbol value. (Common symbols are special.) */ | |
309 | if (bfd_is_com_section (symbol->section)) | |
310 | relocation = 0; | |
0f64bb02 | 311 | else |
3b55e94a BS |
312 | relocation = symbol->value; |
313 | ||
314 | output_section = symbol->section->output_section; | |
315 | ||
316 | /* Convert input-section-relative symbol value to absolute. */ | |
317 | if (relocatable) | |
318 | output_base = 0; | |
319 | else | |
320 | output_base = output_section->vma; | |
321 | ||
322 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
323 | relocation += output_base + symbol->section->output_offset; | |
324 | ||
325 | if (!relocatable && !strcmp (symbol->name, symbol->section->name)) | |
0f64bb02 | 326 | { |
3b55e94a BS |
327 | /* Add in supplied addend. */ |
328 | relocation += reloc_entry->addend; | |
0f64bb02 | 329 | } |
3b55e94a | 330 | |
0f64bb02 CM |
331 | /* Here the variable relocation holds the final address of the |
332 | symbol we are relocating against, plus any addend. */ | |
333 | ||
535b785f | 334 | if (howto->pc_relative) |
0f64bb02 CM |
335 | { |
336 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
337 | ||
535b785f | 338 | if (howto->pcrel_offset) |
07d6d2b8 | 339 | relocation -= reloc_entry->address; |
0f64bb02 CM |
340 | } |
341 | ||
342 | if (relocatable) | |
343 | { | |
344 | reloc_entry->address += input_section->output_offset; | |
345 | reloc_entry->addend += symbol->section->output_offset; | |
346 | } | |
347 | ||
348 | if (howto->complain_on_overflow != complain_overflow_dont) | |
349 | { | |
350 | bfd_reloc_status_type status; | |
351 | ||
3b55e94a | 352 | status = bfd_check_overflow (howto->complain_on_overflow, |
07d6d2b8 AM |
353 | howto->bitsize, |
354 | howto->rightshift, | |
355 | bfd_arch_bits_per_address(abfd), | |
356 | relocation); | |
0f64bb02 CM |
357 | if (status != bfd_reloc_ok) |
358 | return status; | |
359 | } | |
3b55e94a | 360 | |
0f64bb02 CM |
361 | /* If rightshift is 1 and the number odd, return error. */ |
362 | if (howto->rightshift && (relocation & 0x01)) | |
363 | { | |
4eca0228 | 364 | _bfd_error_handler (_("relocation should be even number")); |
0f64bb02 CM |
365 | return bfd_reloc_overflow; |
366 | } | |
367 | ||
368 | relocation >>= (bfd_vma) howto->rightshift; | |
369 | ||
370 | /* Shift everything up to where it's going to be used. */ | |
371 | ||
372 | relocation <<= (bfd_vma) howto->bitpos; | |
373 | ||
3b55e94a | 374 | #define DOIT(x) \ |
0f64bb02 CM |
375 | x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask)) |
376 | ||
377 | /* handle 8 and 16 bit relocations here. */ | |
57698478 | 378 | switch (bfd_get_reloc_size (howto)) |
0f64bb02 | 379 | { |
57698478 | 380 | case 1: |
0f64bb02 | 381 | { |
07d6d2b8 AM |
382 | char x = bfd_get_8 (abfd, (char *) data + addr); |
383 | DOIT (x); | |
384 | bfd_put_8 (abfd, x, (unsigned char *) data + addr); | |
0f64bb02 CM |
385 | } |
386 | break; | |
387 | ||
57698478 | 388 | case 2: |
0f64bb02 | 389 | { |
07d6d2b8 AM |
390 | unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr); |
391 | DOIT (x); | |
392 | bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr); | |
0f64bb02 CM |
393 | } |
394 | break; | |
395 | ||
396 | default: | |
397 | return bfd_reloc_other; | |
398 | } | |
399 | ||
3b55e94a | 400 | return bfd_reloc_ok; |
0f64bb02 CM |
401 | } |
402 | ||
0f64bb02 CM |
403 | /* HOWTO Table for blackfin. |
404 | Blackfin relocations are fairly complicated. | |
405 | Some of the salient features are | |
406 | a. Even numbered offsets. A number of (not all) relocations are | |
407 | even numbered. This means that the rightmost bit is not stored. | |
408 | Needs to right shift by 1 and check to see if value is not odd | |
409 | b. A relocation can be an expression. An expression takes on | |
410 | a variety of relocations arranged in a stack. | |
411 | As a result, we cannot use the standard generic function as special | |
412 | function. We will have our own, which is very similar to the standard | |
413 | generic function except that it understands how to get the value from | |
414 | the relocation stack. . */ | |
415 | ||
416 | #define BFIN_RELOC_MIN 0 | |
48d502e1 | 417 | #define BFIN_RELOC_MAX 0x21 |
0f64bb02 CM |
418 | #define BFIN_GNUEXT_RELOC_MIN 0x40 |
419 | #define BFIN_GNUEXT_RELOC_MAX 0x43 | |
420 | #define BFIN_ARELOC_MIN 0xE0 | |
421 | #define BFIN_ARELOC_MAX 0xF3 | |
422 | ||
423 | static reloc_howto_type bfin_howto_table [] = | |
424 | { | |
425 | /* This reloc does nothing. . */ | |
cb88ce9f | 426 | HOWTO (R_BFIN_UNUSED0, /* type. */ |
0f64bb02 | 427 | 0, /* rightshift. */ |
c94cb026 | 428 | 0, /* size. */ |
6346d5ca | 429 | 0, /* bitsize. */ |
0a1b45a2 | 430 | false, /* pc_relative. */ |
0f64bb02 | 431 | 0, /* bitpos. */ |
6346d5ca | 432 | complain_overflow_dont, /* complain_on_overflow. */ |
0f64bb02 | 433 | bfd_elf_generic_reloc, /* special_function. */ |
cb88ce9f | 434 | "R_BFIN_UNUSED0", /* name. */ |
0a1b45a2 | 435 | false, /* partial_inplace. */ |
0f64bb02 CM |
436 | 0, /* src_mask. */ |
437 | 0, /* dst_mask. */ | |
0a1b45a2 | 438 | false), /* pcrel_offset. */ |
0f64bb02 | 439 | |
cb88ce9f | 440 | HOWTO (R_BFIN_PCREL5M2, /* type. */ |
0f64bb02 | 441 | 1, /* rightshift. */ |
c94cb026 | 442 | 2, /* size. */ |
0f64bb02 | 443 | 4, /* bitsize. */ |
0a1b45a2 | 444 | true, /* pc_relative. */ |
0f64bb02 CM |
445 | 0, /* bitpos. */ |
446 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
447 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 448 | "R_BFIN_PCREL5M2", /* name. */ |
0a1b45a2 | 449 | false, /* partial_inplace. */ |
f4707595 | 450 | 0, /* src_mask. */ |
0f64bb02 | 451 | 0x0000000F, /* dst_mask. */ |
0a1b45a2 | 452 | false), /* pcrel_offset. */ |
0f64bb02 | 453 | |
cb88ce9f | 454 | HOWTO (R_BFIN_UNUSED1, /* type. */ |
0f64bb02 | 455 | 0, /* rightshift. */ |
c94cb026 | 456 | 0, /* size. */ |
6346d5ca | 457 | 0, /* bitsize. */ |
0a1b45a2 | 458 | false, /* pc_relative. */ |
0f64bb02 | 459 | 0, /* bitpos. */ |
6346d5ca | 460 | complain_overflow_dont, /* complain_on_overflow. */ |
0f64bb02 | 461 | bfd_elf_generic_reloc, /* special_function. */ |
cb88ce9f | 462 | "R_BFIN_UNUSED1", /* name. */ |
0a1b45a2 | 463 | false, /* partial_inplace. */ |
0f64bb02 CM |
464 | 0, /* src_mask. */ |
465 | 0, /* dst_mask. */ | |
0a1b45a2 | 466 | false), /* pcrel_offset. */ |
0f64bb02 | 467 | |
cb88ce9f | 468 | HOWTO (R_BFIN_PCREL10, /* type. */ |
0f64bb02 | 469 | 1, /* rightshift. */ |
c94cb026 | 470 | 2, /* size. */ |
0f64bb02 | 471 | 10, /* bitsize. */ |
0a1b45a2 | 472 | true, /* pc_relative. */ |
0f64bb02 CM |
473 | 0, /* bitpos. */ |
474 | complain_overflow_signed, /* complain_on_overflow. */ | |
475 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 476 | "R_BFIN_PCREL10", /* name. */ |
0a1b45a2 | 477 | false, /* partial_inplace. */ |
f4707595 | 478 | 0, /* src_mask. */ |
0f64bb02 | 479 | 0x000003FF, /* dst_mask. */ |
0a1b45a2 | 480 | true), /* pcrel_offset. */ |
3b55e94a | 481 | |
cb88ce9f | 482 | HOWTO (R_BFIN_PCREL12_JUMP, /* type. */ |
0f64bb02 CM |
483 | 1, /* rightshift. */ |
484 | /* the offset is actually 13 bit | |
485 | aligned on a word boundary so | |
486 | only 12 bits have to be used. | |
487 | Right shift the rightmost bit.. */ | |
c94cb026 | 488 | 2, /* size. */ |
0f64bb02 | 489 | 12, /* bitsize. */ |
0a1b45a2 | 490 | true, /* pc_relative. */ |
0f64bb02 CM |
491 | 0, /* bitpos. */ |
492 | complain_overflow_signed, /* complain_on_overflow. */ | |
493 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 494 | "R_BFIN_PCREL12_JUMP", /* name. */ |
0a1b45a2 | 495 | false, /* partial_inplace. */ |
f4707595 | 496 | 0, /* src_mask. */ |
0f64bb02 | 497 | 0x0FFF, /* dst_mask. */ |
0a1b45a2 | 498 | true), /* pcrel_offset. */ |
0f64bb02 | 499 | |
cb88ce9f | 500 | HOWTO (R_BFIN_RIMM16, /* type. */ |
0f64bb02 | 501 | 0, /* rightshift. */ |
c94cb026 | 502 | 2, /* size. */ |
0f64bb02 | 503 | 16, /* bitsize. */ |
0a1b45a2 | 504 | false, /* pc_relative. */ |
0f64bb02 CM |
505 | 0, /* bitpos. */ |
506 | complain_overflow_signed, /* complain_on_overflow. */ | |
507 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 508 | "R_BFIN_RIMM16", /* name. */ |
0a1b45a2 | 509 | false, /* partial_inplace. */ |
f4707595 | 510 | 0, /* src_mask. */ |
0f64bb02 | 511 | 0x0000FFFF, /* dst_mask. */ |
0a1b45a2 | 512 | true), /* pcrel_offset. */ |
0f64bb02 | 513 | |
cb88ce9f | 514 | HOWTO (R_BFIN_LUIMM16, /* type. */ |
0f64bb02 | 515 | 0, /* rightshift. */ |
c94cb026 | 516 | 2, /* size. */ |
0f64bb02 | 517 | 16, /* bitsize. */ |
0a1b45a2 | 518 | false, /* pc_relative. */ |
0f64bb02 CM |
519 | 0, /* bitpos. */ |
520 | complain_overflow_dont, /* complain_on_overflow. */ | |
521 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 522 | "R_BFIN_LUIMM16", /* name. */ |
0a1b45a2 | 523 | false, /* partial_inplace. */ |
f4707595 | 524 | 0, /* src_mask. */ |
0f64bb02 | 525 | 0x0000FFFF, /* dst_mask. */ |
0a1b45a2 | 526 | true), /* pcrel_offset. */ |
3b55e94a | 527 | |
cb88ce9f | 528 | HOWTO (R_BFIN_HUIMM16, /* type. */ |
0f64bb02 | 529 | 16, /* rightshift. */ |
c94cb026 | 530 | 2, /* size. */ |
0f64bb02 | 531 | 16, /* bitsize. */ |
0a1b45a2 | 532 | false, /* pc_relative. */ |
0f64bb02 CM |
533 | 0, /* bitpos. */ |
534 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
535 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 536 | "R_BFIN_HUIMM16", /* name. */ |
0a1b45a2 | 537 | false, /* partial_inplace. */ |
f4707595 | 538 | 0, /* src_mask. */ |
0f64bb02 | 539 | 0x0000FFFF, /* dst_mask. */ |
0a1b45a2 | 540 | true), /* pcrel_offset. */ |
0f64bb02 | 541 | |
cb88ce9f | 542 | HOWTO (R_BFIN_PCREL12_JUMP_S, /* type. */ |
0f64bb02 | 543 | 1, /* rightshift. */ |
c94cb026 | 544 | 2, /* size. */ |
0f64bb02 | 545 | 12, /* bitsize. */ |
0a1b45a2 | 546 | true, /* pc_relative. */ |
0f64bb02 CM |
547 | 0, /* bitpos. */ |
548 | complain_overflow_signed, /* complain_on_overflow. */ | |
549 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 550 | "R_BFIN_PCREL12_JUMP_S", /* name. */ |
0a1b45a2 | 551 | false, /* partial_inplace. */ |
f4707595 | 552 | 0, /* src_mask. */ |
0f64bb02 | 553 | 0x00000FFF, /* dst_mask. */ |
0a1b45a2 | 554 | true), /* pcrel_offset. */ |
0f64bb02 | 555 | |
cb88ce9f | 556 | HOWTO (R_BFIN_PCREL24_JUMP_X, /* type. */ |
07d6d2b8 | 557 | 1, /* rightshift. */ |
c94cb026 | 558 | 4, /* size. */ |
07d6d2b8 | 559 | 24, /* bitsize. */ |
0a1b45a2 | 560 | true, /* pc_relative. */ |
07d6d2b8 AM |
561 | 0, /* bitpos. */ |
562 | complain_overflow_signed, /* complain_on_overflow. */ | |
563 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 564 | "R_BFIN_PCREL24_JUMP_X", /* name. */ |
0a1b45a2 | 565 | false, /* partial_inplace. */ |
f4707595 | 566 | 0, /* src_mask. */ |
0f64bb02 | 567 | 0x00FFFFFF, /* dst_mask. */ |
0a1b45a2 | 568 | true), /* pcrel_offset. */ |
0f64bb02 | 569 | |
cb88ce9f | 570 | HOWTO (R_BFIN_PCREL24, /* type. */ |
0f64bb02 | 571 | 1, /* rightshift. */ |
c94cb026 | 572 | 4, /* size. */ |
0f64bb02 | 573 | 24, /* bitsize. */ |
0a1b45a2 | 574 | true, /* pc_relative. */ |
0f64bb02 CM |
575 | 0, /* bitpos. */ |
576 | complain_overflow_signed, /* complain_on_overflow. */ | |
577 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 578 | "R_BFIN_PCREL24", /* name. */ |
0a1b45a2 | 579 | false, /* partial_inplace. */ |
f4707595 | 580 | 0, /* src_mask. */ |
0f64bb02 | 581 | 0x00FFFFFF, /* dst_mask. */ |
0a1b45a2 | 582 | true), /* pcrel_offset. */ |
0f64bb02 | 583 | |
cb88ce9f | 584 | HOWTO (R_BFIN_UNUSEDB, /* type. */ |
0f64bb02 | 585 | 0, /* rightshift. */ |
c94cb026 | 586 | 0, /* size. */ |
6346d5ca | 587 | 0, /* bitsize. */ |
0a1b45a2 | 588 | false, /* pc_relative. */ |
0f64bb02 CM |
589 | 0, /* bitpos. */ |
590 | complain_overflow_dont, /* complain_on_overflow. */ | |
591 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 592 | "R_BFIN_UNUSEDB", /* name. */ |
0a1b45a2 | 593 | false, /* partial_inplace. */ |
0f64bb02 CM |
594 | 0, /* src_mask. */ |
595 | 0, /* dst_mask. */ | |
0a1b45a2 | 596 | false), /* pcrel_offset. */ |
0f64bb02 | 597 | |
cb88ce9f | 598 | HOWTO (R_BFIN_UNUSEDC, /* type. */ |
0f64bb02 | 599 | 0, /* rightshift. */ |
c94cb026 | 600 | 0, /* size. */ |
6346d5ca | 601 | 0, /* bitsize. */ |
0a1b45a2 | 602 | false, /* pc_relative. */ |
0f64bb02 CM |
603 | 0, /* bitpos. */ |
604 | complain_overflow_dont, /* complain_on_overflow. */ | |
605 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 606 | "R_BFIN_UNUSEDC", /* name. */ |
0a1b45a2 | 607 | false, /* partial_inplace. */ |
0f64bb02 CM |
608 | 0, /* src_mask. */ |
609 | 0, /* dst_mask. */ | |
0a1b45a2 | 610 | false), /* pcrel_offset. */ |
0f64bb02 | 611 | |
cb88ce9f | 612 | HOWTO (R_BFIN_PCREL24_JUMP_L, /* type. */ |
0f64bb02 | 613 | 1, /* rightshift. */ |
c94cb026 | 614 | 4, /* size. */ |
0f64bb02 | 615 | 24, /* bitsize. */ |
0a1b45a2 | 616 | true, /* pc_relative. */ |
0f64bb02 CM |
617 | 0, /* bitpos. */ |
618 | complain_overflow_signed, /* complain_on_overflow. */ | |
619 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 620 | "R_BFIN_PCREL24_JUMP_L", /* name. */ |
0a1b45a2 | 621 | false, /* partial_inplace. */ |
f4707595 | 622 | 0, /* src_mask. */ |
0f64bb02 | 623 | 0x00FFFFFF, /* dst_mask. */ |
0a1b45a2 | 624 | true), /* pcrel_offset. */ |
0f64bb02 | 625 | |
cb88ce9f | 626 | HOWTO (R_BFIN_PCREL24_CALL_X, /* type. */ |
0f64bb02 | 627 | 1, /* rightshift. */ |
c94cb026 | 628 | 4, /* size. */ |
0f64bb02 | 629 | 24, /* bitsize. */ |
0a1b45a2 | 630 | true, /* pc_relative. */ |
0f64bb02 CM |
631 | 0, /* bitpos. */ |
632 | complain_overflow_signed, /* complain_on_overflow. */ | |
633 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 634 | "R_BFIN_PCREL24_CALL_X", /* name. */ |
0a1b45a2 | 635 | false, /* partial_inplace. */ |
f4707595 | 636 | 0, /* src_mask. */ |
0f64bb02 | 637 | 0x00FFFFFF, /* dst_mask. */ |
0a1b45a2 | 638 | true), /* pcrel_offset. */ |
0f64bb02 | 639 | |
cb88ce9f | 640 | HOWTO (R_BFIN_VAR_EQ_SYMB, /* type. */ |
0f64bb02 | 641 | 0, /* rightshift. */ |
c94cb026 | 642 | 4, /* size. */ |
0f64bb02 | 643 | 32, /* bitsize. */ |
0a1b45a2 | 644 | false, /* pc_relative. */ |
0f64bb02 CM |
645 | 0, /* bitpos. */ |
646 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
647 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 648 | "R_BFIN_VAR_EQ_SYMB", /* name. */ |
0a1b45a2 | 649 | false, /* partial_inplace. */ |
0f64bb02 CM |
650 | 0, /* src_mask. */ |
651 | 0, /* dst_mask. */ | |
0a1b45a2 | 652 | false), /* pcrel_offset. */ |
0f64bb02 | 653 | |
cb88ce9f | 654 | HOWTO (R_BFIN_BYTE_DATA, /* type. */ |
0f64bb02 | 655 | 0, /* rightshift. */ |
c94cb026 | 656 | 1, /* size. */ |
0f64bb02 | 657 | 8, /* bitsize. */ |
0a1b45a2 | 658 | false, /* pc_relative. */ |
0f64bb02 CM |
659 | 0, /* bitpos. */ |
660 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
661 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 662 | "R_BFIN_BYTE_DATA", /* name. */ |
0a1b45a2 | 663 | false, /* partial_inplace. */ |
f4707595 | 664 | 0, /* src_mask. */ |
0f64bb02 | 665 | 0xFF, /* dst_mask. */ |
0a1b45a2 | 666 | true), /* pcrel_offset. */ |
0f64bb02 | 667 | |
cb88ce9f | 668 | HOWTO (R_BFIN_BYTE2_DATA, /* type. */ |
0f64bb02 | 669 | 0, /* rightshift. */ |
c94cb026 | 670 | 2, /* size. */ |
0f64bb02 | 671 | 16, /* bitsize. */ |
0a1b45a2 | 672 | false, /* pc_relative. */ |
0f64bb02 CM |
673 | 0, /* bitpos. */ |
674 | complain_overflow_signed, /* complain_on_overflow. */ | |
675 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 676 | "R_BFIN_BYTE2_DATA", /* name. */ |
0a1b45a2 | 677 | false, /* partial_inplace. */ |
f4707595 | 678 | 0, /* src_mask. */ |
0f64bb02 | 679 | 0xFFFF, /* dst_mask. */ |
0a1b45a2 | 680 | true), /* pcrel_offset. */ |
0f64bb02 | 681 | |
cb88ce9f | 682 | HOWTO (R_BFIN_BYTE4_DATA, /* type. */ |
0f64bb02 | 683 | 0, /* rightshift. */ |
c94cb026 | 684 | 4, /* size. */ |
0f64bb02 | 685 | 32, /* bitsize. */ |
0a1b45a2 | 686 | false, /* pc_relative. */ |
0f64bb02 CM |
687 | 0, /* bitpos. */ |
688 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
689 | bfin_byte4_reloc, /* special_function. */ | |
cb88ce9f | 690 | "R_BFIN_BYTE4_DATA", /* name. */ |
0a1b45a2 | 691 | false, /* partial_inplace. */ |
f4707595 | 692 | 0, /* src_mask. */ |
0f64bb02 | 693 | 0xFFFFFFFF, /* dst_mask. */ |
0a1b45a2 | 694 | true), /* pcrel_offset. */ |
0f64bb02 | 695 | |
cb88ce9f | 696 | HOWTO (R_BFIN_PCREL11, /* type. */ |
0f64bb02 | 697 | 1, /* rightshift. */ |
c94cb026 | 698 | 2, /* size. */ |
0f64bb02 | 699 | 10, /* bitsize. */ |
0a1b45a2 | 700 | true, /* pc_relative. */ |
0f64bb02 CM |
701 | 0, /* bitpos. */ |
702 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
703 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 704 | "R_BFIN_PCREL11", /* name. */ |
0a1b45a2 | 705 | false, /* partial_inplace. */ |
f4707595 | 706 | 0, /* src_mask. */ |
0f64bb02 | 707 | 0x000003FF, /* dst_mask. */ |
0a1b45a2 | 708 | false), /* pcrel_offset. */ |
48d502e1 BS |
709 | |
710 | ||
711 | /* A 18-bit signed operand with the GOT offset for the address of | |
712 | the symbol. */ | |
07d6d2b8 | 713 | HOWTO (R_BFIN_GOT17M4, /* type */ |
48d502e1 | 714 | 2, /* rightshift */ |
c94cb026 | 715 | 2, /* size */ |
48d502e1 | 716 | 16, /* bitsize */ |
0a1b45a2 | 717 | false, /* pc_relative */ |
48d502e1 BS |
718 | 0, /* bitpos */ |
719 | complain_overflow_signed, /* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
5dff4664 | 721 | "R_BFIN_GOT17M4", /* name */ |
0a1b45a2 | 722 | false, /* partial_inplace */ |
07d6d2b8 AM |
723 | 0xffff, /* src_mask */ |
724 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 725 | false), /* pcrel_offset */ |
48d502e1 BS |
726 | |
727 | /* The upper 16 bits of the GOT offset for the address of the | |
728 | symbol. */ | |
07d6d2b8 | 729 | HOWTO (R_BFIN_GOTHI, /* type */ |
48d502e1 | 730 | 0, /* rightshift */ |
c94cb026 | 731 | 2, /* size */ |
48d502e1 | 732 | 16, /* bitsize */ |
0a1b45a2 | 733 | false, /* pc_relative */ |
48d502e1 BS |
734 | 0, /* bitpos */ |
735 | complain_overflow_dont, /* complain_on_overflow */ | |
736 | bfd_elf_generic_reloc, /* special_function */ | |
737 | "R_BFIN_GOTHI", /* name */ | |
0a1b45a2 | 738 | false, /* partial_inplace */ |
07d6d2b8 | 739 | 0xffff, /* src_mask */ |
48d502e1 | 740 | 0xffff, /* dst_mask */ |
0a1b45a2 | 741 | false), /* pcrel_offset */ |
48d502e1 BS |
742 | |
743 | /* The lower 16 bits of the GOT offset for the address of the | |
744 | symbol. */ | |
07d6d2b8 | 745 | HOWTO (R_BFIN_GOTLO, /* type */ |
48d502e1 | 746 | 0, /* rightshift */ |
c94cb026 | 747 | 2, /* size */ |
48d502e1 | 748 | 16, /* bitsize */ |
0a1b45a2 | 749 | false, /* pc_relative */ |
48d502e1 BS |
750 | 0, /* bitpos */ |
751 | complain_overflow_dont, /* complain_on_overflow */ | |
752 | bfd_elf_generic_reloc, /* special_function */ | |
753 | "R_BFIN_GOTLO", /* name */ | |
0a1b45a2 | 754 | false, /* partial_inplace */ |
48d502e1 BS |
755 | 0xffff, /* src_mask */ |
756 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 757 | false), /* pcrel_offset */ |
48d502e1 BS |
758 | |
759 | /* The 32-bit address of the canonical descriptor of a function. */ | |
760 | HOWTO (R_BFIN_FUNCDESC, /* type */ | |
761 | 0, /* rightshift */ | |
c94cb026 | 762 | 4, /* size */ |
48d502e1 | 763 | 32, /* bitsize */ |
0a1b45a2 | 764 | false, /* pc_relative */ |
48d502e1 BS |
765 | 0, /* bitpos */ |
766 | complain_overflow_bitfield, /* complain_on_overflow */ | |
767 | bfd_elf_generic_reloc, /* special_function */ | |
768 | "R_BFIN_FUNCDESC", /* name */ | |
0a1b45a2 | 769 | false, /* partial_inplace */ |
48d502e1 BS |
770 | 0xffffffff, /* src_mask */ |
771 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 772 | false), /* pcrel_offset */ |
48d502e1 BS |
773 | |
774 | /* A 12-bit signed operand with the GOT offset for the address of | |
775 | canonical descriptor of a function. */ | |
776 | HOWTO (R_BFIN_FUNCDESC_GOT17M4, /* type */ | |
777 | 2, /* rightshift */ | |
c94cb026 | 778 | 2, /* size */ |
48d502e1 | 779 | 16, /* bitsize */ |
0a1b45a2 | 780 | false, /* pc_relative */ |
48d502e1 BS |
781 | 0, /* bitpos */ |
782 | complain_overflow_signed, /* complain_on_overflow */ | |
783 | bfd_elf_generic_reloc, /* special_function */ | |
784 | "R_BFIN_FUNCDESC_GOT17M4", /* name */ | |
0a1b45a2 | 785 | false, /* partial_inplace */ |
07d6d2b8 AM |
786 | 0xffff, /* src_mask */ |
787 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 788 | false), /* pcrel_offset */ |
48d502e1 BS |
789 | |
790 | /* The upper 16 bits of the GOT offset for the address of the | |
791 | canonical descriptor of a function. */ | |
792 | HOWTO (R_BFIN_FUNCDESC_GOTHI, /* type */ | |
793 | 0, /* rightshift */ | |
c94cb026 | 794 | 2, /* size */ |
48d502e1 | 795 | 16, /* bitsize */ |
0a1b45a2 | 796 | false, /* pc_relative */ |
48d502e1 BS |
797 | 0, /* bitpos */ |
798 | complain_overflow_dont, /* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
800 | "R_BFIN_FUNCDESC_GOTHI", /* name */ | |
0a1b45a2 | 801 | false, /* partial_inplace */ |
48d502e1 BS |
802 | 0xffff, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 804 | false), /* pcrel_offset */ |
48d502e1 BS |
805 | |
806 | /* The lower 16 bits of the GOT offset for the address of the | |
807 | canonical descriptor of a function. */ | |
808 | HOWTO (R_BFIN_FUNCDESC_GOTLO, /* type */ | |
809 | 0, /* rightshift */ | |
c94cb026 | 810 | 2, /* size */ |
48d502e1 | 811 | 16, /* bitsize */ |
0a1b45a2 | 812 | false, /* pc_relative */ |
48d502e1 BS |
813 | 0, /* bitpos */ |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
815 | bfd_elf_generic_reloc, /* special_function */ | |
816 | "R_BFIN_FUNCDESC_GOTLO", /* name */ | |
0a1b45a2 | 817 | false, /* partial_inplace */ |
48d502e1 BS |
818 | 0xffff, /* src_mask */ |
819 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 820 | false), /* pcrel_offset */ |
48d502e1 BS |
821 | |
822 | /* The 32-bit address of the canonical descriptor of a function. */ | |
823 | HOWTO (R_BFIN_FUNCDESC_VALUE, /* type */ | |
824 | 0, /* rightshift */ | |
c94cb026 | 825 | 4, /* size */ |
48d502e1 | 826 | 64, /* bitsize */ |
0a1b45a2 | 827 | false, /* pc_relative */ |
48d502e1 BS |
828 | 0, /* bitpos */ |
829 | complain_overflow_bitfield, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_BFIN_FUNCDESC_VALUE", /* name */ | |
0a1b45a2 | 832 | false, /* partial_inplace */ |
48d502e1 BS |
833 | 0xffffffff, /* src_mask */ |
834 | 0xffffffff, /* dst_mask */ | |
0a1b45a2 | 835 | false), /* pcrel_offset */ |
48d502e1 BS |
836 | |
837 | /* A 12-bit signed operand with the GOT offset for the address of | |
838 | canonical descriptor of a function. */ | |
839 | HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4, /* type */ | |
840 | 2, /* rightshift */ | |
c94cb026 | 841 | 2, /* size */ |
48d502e1 | 842 | 16, /* bitsize */ |
0a1b45a2 | 843 | false, /* pc_relative */ |
48d502e1 BS |
844 | 0, /* bitpos */ |
845 | complain_overflow_signed, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
847 | "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */ | |
0a1b45a2 | 848 | false, /* partial_inplace */ |
07d6d2b8 AM |
849 | 0xffff, /* src_mask */ |
850 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 851 | false), /* pcrel_offset */ |
48d502e1 BS |
852 | |
853 | /* The upper 16 bits of the GOT offset for the address of the | |
854 | canonical descriptor of a function. */ | |
855 | HOWTO (R_BFIN_FUNCDESC_GOTOFFHI, /* type */ | |
856 | 0, /* rightshift */ | |
c94cb026 | 857 | 2, /* size */ |
48d502e1 | 858 | 16, /* bitsize */ |
0a1b45a2 | 859 | false, /* pc_relative */ |
48d502e1 BS |
860 | 0, /* bitpos */ |
861 | complain_overflow_dont, /* complain_on_overflow */ | |
862 | bfd_elf_generic_reloc, /* special_function */ | |
863 | "R_BFIN_FUNCDESC_GOTOFFHI", /* name */ | |
0a1b45a2 | 864 | false, /* partial_inplace */ |
48d502e1 BS |
865 | 0xffff, /* src_mask */ |
866 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 867 | false), /* pcrel_offset */ |
48d502e1 BS |
868 | |
869 | /* The lower 16 bits of the GOT offset for the address of the | |
870 | canonical descriptor of a function. */ | |
871 | HOWTO (R_BFIN_FUNCDESC_GOTOFFLO, /* type */ | |
872 | 0, /* rightshift */ | |
c94cb026 | 873 | 2, /* size */ |
48d502e1 | 874 | 16, /* bitsize */ |
0a1b45a2 | 875 | false, /* pc_relative */ |
48d502e1 BS |
876 | 0, /* bitpos */ |
877 | complain_overflow_dont, /* complain_on_overflow */ | |
878 | bfd_elf_generic_reloc, /* special_function */ | |
879 | "R_BFIN_FUNCDESC_GOTOFFLO", /* name */ | |
0a1b45a2 | 880 | false, /* partial_inplace */ |
48d502e1 BS |
881 | 0xffff, /* src_mask */ |
882 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 883 | false), /* pcrel_offset */ |
48d502e1 BS |
884 | |
885 | /* A 12-bit signed operand with the GOT offset for the address of | |
886 | the symbol. */ | |
07d6d2b8 | 887 | HOWTO (R_BFIN_GOTOFF17M4, /* type */ |
48d502e1 | 888 | 2, /* rightshift */ |
c94cb026 | 889 | 2, /* size */ |
48d502e1 | 890 | 16, /* bitsize */ |
0a1b45a2 | 891 | false, /* pc_relative */ |
48d502e1 BS |
892 | 0, /* bitpos */ |
893 | complain_overflow_signed, /* complain_on_overflow */ | |
894 | bfd_elf_generic_reloc, /* special_function */ | |
895 | "R_BFIN_GOTOFF17M4", /* name */ | |
0a1b45a2 | 896 | false, /* partial_inplace */ |
07d6d2b8 AM |
897 | 0xffff, /* src_mask */ |
898 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 899 | false), /* pcrel_offset */ |
48d502e1 BS |
900 | |
901 | /* The upper 16 bits of the GOT offset for the address of the | |
902 | symbol. */ | |
07d6d2b8 | 903 | HOWTO (R_BFIN_GOTOFFHI, /* type */ |
48d502e1 | 904 | 0, /* rightshift */ |
c94cb026 | 905 | 2, /* size */ |
48d502e1 | 906 | 16, /* bitsize */ |
0a1b45a2 | 907 | false, /* pc_relative */ |
48d502e1 BS |
908 | 0, /* bitpos */ |
909 | complain_overflow_dont, /* complain_on_overflow */ | |
910 | bfd_elf_generic_reloc, /* special_function */ | |
911 | "R_BFIN_GOTOFFHI", /* name */ | |
0a1b45a2 | 912 | false, /* partial_inplace */ |
48d502e1 BS |
913 | 0xffff, /* src_mask */ |
914 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 915 | false), /* pcrel_offset */ |
48d502e1 BS |
916 | |
917 | /* The lower 16 bits of the GOT offset for the address of the | |
918 | symbol. */ | |
919 | HOWTO (R_BFIN_GOTOFFLO, /* type */ | |
920 | 0, /* rightshift */ | |
c94cb026 | 921 | 2, /* size */ |
48d502e1 | 922 | 16, /* bitsize */ |
0a1b45a2 | 923 | false, /* pc_relative */ |
48d502e1 BS |
924 | 0, /* bitpos */ |
925 | complain_overflow_dont, /* complain_on_overflow */ | |
926 | bfd_elf_generic_reloc, /* special_function */ | |
927 | "R_BFIN_GOTOFFLO", /* name */ | |
0a1b45a2 | 928 | false, /* partial_inplace */ |
48d502e1 BS |
929 | 0xffff, /* src_mask */ |
930 | 0xffff, /* dst_mask */ | |
0a1b45a2 | 931 | false), /* pcrel_offset */ |
0f64bb02 CM |
932 | }; |
933 | ||
0f64bb02 CM |
934 | static reloc_howto_type bfin_gnuext_howto_table [] = |
935 | { | |
cb88ce9f | 936 | HOWTO (R_BFIN_PLTPC, /* type. */ |
0f64bb02 | 937 | 0, /* rightshift. */ |
c94cb026 | 938 | 2, /* size. */ |
0f64bb02 | 939 | 16, /* bitsize. */ |
0a1b45a2 | 940 | false, /* pc_relative. */ |
0f64bb02 CM |
941 | 0, /* bitpos. */ |
942 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
943 | bfin_pltpc_reloc, /* special_function. */ | |
cb88ce9f | 944 | "R_BFIN_PLTPC", /* name. */ |
0a1b45a2 | 945 | false, /* partial_inplace. */ |
0f64bb02 CM |
946 | 0xffff, /* src_mask. */ |
947 | 0xffff, /* dst_mask. */ | |
0a1b45a2 | 948 | false), /* pcrel_offset. */ |
0f64bb02 | 949 | |
cb88ce9f | 950 | HOWTO (R_BFIN_GOT, /* type. */ |
0f64bb02 | 951 | 0, /* rightshift. */ |
c94cb026 | 952 | 2, /* size. */ |
0f64bb02 | 953 | 16, /* bitsize. */ |
0a1b45a2 | 954 | false, /* pc_relative. */ |
0f64bb02 CM |
955 | 0, /* bitpos. */ |
956 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
957 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 958 | "R_BFIN_GOT", /* name. */ |
0a1b45a2 | 959 | false, /* partial_inplace. */ |
0f64bb02 CM |
960 | 0x7fff, /* src_mask. */ |
961 | 0x7fff, /* dst_mask. */ | |
0a1b45a2 | 962 | false), /* pcrel_offset. */ |
0f64bb02 CM |
963 | |
964 | /* GNU extension to record C++ vtable hierarchy. */ | |
07d6d2b8 AM |
965 | HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */ |
966 | 0, /* rightshift. */ | |
c94cb026 | 967 | 4, /* size. */ |
07d6d2b8 | 968 | 0, /* bitsize. */ |
0a1b45a2 | 969 | false, /* pc_relative. */ |
07d6d2b8 AM |
970 | 0, /* bitpos. */ |
971 | complain_overflow_dont, /* complain_on_overflow. */ | |
972 | NULL, /* special_function. */ | |
973 | "R_BFIN_GNU_VTINHERIT", /* name. */ | |
0a1b45a2 | 974 | false, /* partial_inplace. */ |
07d6d2b8 AM |
975 | 0, /* src_mask. */ |
976 | 0, /* dst_mask. */ | |
0a1b45a2 | 977 | false), /* pcrel_offset. */ |
0f64bb02 CM |
978 | |
979 | /* GNU extension to record C++ vtable member usage. */ | |
980 | HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ | |
07d6d2b8 | 981 | 0, /* rightshift. */ |
c94cb026 | 982 | 4, /* size. */ |
07d6d2b8 | 983 | 0, /* bitsize. */ |
0a1b45a2 | 984 | false, /* pc_relative. */ |
07d6d2b8 AM |
985 | 0, /* bitpos. */ |
986 | complain_overflow_dont, /* complain_on_overflow. */ | |
987 | _bfd_elf_rel_vtable_reloc_fn, /* special_function. */ | |
988 | "R_BFIN_GNU_VTENTRY", /* name. */ | |
0a1b45a2 | 989 | false, /* partial_inplace. */ |
07d6d2b8 AM |
990 | 0, /* src_mask. */ |
991 | 0, /* dst_mask. */ | |
0a1b45a2 | 992 | false) /* pcrel_offset. */ |
0f64bb02 CM |
993 | }; |
994 | ||
995 | struct bfin_reloc_map | |
996 | { | |
07d6d2b8 | 997 | bfd_reloc_code_real_type bfd_reloc_val; |
0f64bb02 CM |
998 | unsigned int bfin_reloc_val; |
999 | }; | |
1000 | ||
1001 | static const struct bfin_reloc_map bfin_reloc_map [] = | |
1002 | { | |
cb88ce9f BS |
1003 | { BFD_RELOC_NONE, R_BFIN_UNUSED0 }, |
1004 | { BFD_RELOC_BFIN_5_PCREL, R_BFIN_PCREL5M2 }, | |
1005 | { BFD_RELOC_NONE, R_BFIN_UNUSED1 }, | |
1006 | { BFD_RELOC_BFIN_10_PCREL, R_BFIN_PCREL10 }, | |
1007 | { BFD_RELOC_BFIN_12_PCREL_JUMP, R_BFIN_PCREL12_JUMP }, | |
1008 | { BFD_RELOC_BFIN_16_IMM, R_BFIN_RIMM16 }, | |
1009 | { BFD_RELOC_BFIN_16_LOW, R_BFIN_LUIMM16 }, | |
1010 | { BFD_RELOC_BFIN_16_HIGH, R_BFIN_HUIMM16 }, | |
1011 | { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_BFIN_PCREL12_JUMP_S }, | |
1012 | { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 }, | |
1013 | { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 }, | |
1014 | { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_BFIN_PCREL24_JUMP_L }, | |
1015 | { BFD_RELOC_NONE, R_BFIN_UNUSEDB }, | |
1016 | { BFD_RELOC_NONE, R_BFIN_UNUSEDC }, | |
1017 | { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_BFIN_PCREL24_CALL_X }, | |
1018 | { BFD_RELOC_8, R_BFIN_BYTE_DATA }, | |
1019 | { BFD_RELOC_16, R_BFIN_BYTE2_DATA }, | |
1020 | { BFD_RELOC_32, R_BFIN_BYTE4_DATA }, | |
1021 | { BFD_RELOC_BFIN_11_PCREL, R_BFIN_PCREL11 }, | |
1022 | { BFD_RELOC_BFIN_GOT, R_BFIN_GOT }, | |
1023 | { BFD_RELOC_BFIN_PLTPC, R_BFIN_PLTPC }, | |
48d502e1 BS |
1024 | |
1025 | { BFD_RELOC_BFIN_GOT17M4, R_BFIN_GOT17M4 }, | |
1026 | { BFD_RELOC_BFIN_GOTHI, R_BFIN_GOTHI }, | |
1027 | { BFD_RELOC_BFIN_GOTLO, R_BFIN_GOTLO }, | |
1028 | { BFD_RELOC_BFIN_FUNCDESC, R_BFIN_FUNCDESC }, | |
1029 | { BFD_RELOC_BFIN_FUNCDESC_GOT17M4, R_BFIN_FUNCDESC_GOT17M4 }, | |
1030 | { BFD_RELOC_BFIN_FUNCDESC_GOTHI, R_BFIN_FUNCDESC_GOTHI }, | |
1031 | { BFD_RELOC_BFIN_FUNCDESC_GOTLO, R_BFIN_FUNCDESC_GOTLO }, | |
1032 | { BFD_RELOC_BFIN_FUNCDESC_VALUE, R_BFIN_FUNCDESC_VALUE }, | |
1033 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4, R_BFIN_FUNCDESC_GOTOFF17M4 }, | |
1034 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI, R_BFIN_FUNCDESC_GOTOFFHI }, | |
1035 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO, R_BFIN_FUNCDESC_GOTOFFLO }, | |
1036 | { BFD_RELOC_BFIN_GOTOFF17M4, R_BFIN_GOTOFF17M4 }, | |
1037 | { BFD_RELOC_BFIN_GOTOFFHI, R_BFIN_GOTOFFHI }, | |
1038 | { BFD_RELOC_BFIN_GOTOFFLO, R_BFIN_GOTOFFLO }, | |
1039 | ||
0f64bb02 CM |
1040 | { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT }, |
1041 | { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY }, | |
0f64bb02 CM |
1042 | }; |
1043 | ||
1044 | ||
0a1b45a2 | 1045 | static bool |
f3185997 | 1046 | bfin_info_to_howto (bfd *abfd, |
07d6d2b8 AM |
1047 | arelent *cache_ptr, |
1048 | Elf_Internal_Rela *dst) | |
0f64bb02 CM |
1049 | { |
1050 | unsigned int r_type; | |
1051 | ||
1052 | r_type = ELF32_R_TYPE (dst->r_info); | |
1053 | ||
1054 | if (r_type <= BFIN_RELOC_MAX) | |
1055 | cache_ptr->howto = &bfin_howto_table [r_type]; | |
1056 | ||
0f64bb02 CM |
1057 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1058 | cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1059 | ||
1060 | else | |
f3185997 NC |
1061 | { |
1062 | /* xgettext:c-format */ | |
1063 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1064 | abfd, r_type); | |
1065 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1066 | return false; |
f3185997 NC |
1067 | } |
1068 | ||
0a1b45a2 | 1069 | return true; |
0f64bb02 | 1070 | } |
157090f7 | 1071 | |
0f64bb02 CM |
1072 | /* Given a BFD reloc type, return the howto. */ |
1073 | static reloc_howto_type * | |
1074 | bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1075 | bfd_reloc_code_real_type code) | |
1076 | { | |
1077 | unsigned int i; | |
0ba38529 | 1078 | unsigned int r_type = (unsigned int) -1; |
0f64bb02 | 1079 | |
0ba38529 | 1080 | for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); i--;) |
0f64bb02 CM |
1081 | if (bfin_reloc_map[i].bfd_reloc_val == code) |
1082 | r_type = bfin_reloc_map[i].bfin_reloc_val; | |
1083 | ||
0ba38529 | 1084 | if (r_type <= BFIN_RELOC_MAX) |
0f64bb02 CM |
1085 | return &bfin_howto_table [r_type]; |
1086 | ||
0f64bb02 CM |
1087 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1088 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1089 | ||
1090 | return (reloc_howto_type *) NULL; | |
157090f7 | 1091 | } |
0f64bb02 | 1092 | |
157090f7 AM |
1093 | static reloc_howto_type * |
1094 | bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1095 | const char *r_name) | |
1096 | { | |
1097 | unsigned int i; | |
1098 | ||
1099 | for (i = 0; | |
1100 | i < (sizeof (bfin_howto_table) | |
1101 | / sizeof (bfin_howto_table[0])); | |
1102 | i++) | |
1103 | if (bfin_howto_table[i].name != NULL | |
1104 | && strcasecmp (bfin_howto_table[i].name, r_name) == 0) | |
1105 | return &bfin_howto_table[i]; | |
1106 | ||
1107 | for (i = 0; | |
1108 | i < (sizeof (bfin_gnuext_howto_table) | |
1109 | / sizeof (bfin_gnuext_howto_table[0])); | |
1110 | i++) | |
1111 | if (bfin_gnuext_howto_table[i].name != NULL | |
1112 | && strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0) | |
1113 | return &bfin_gnuext_howto_table[i]; | |
1114 | ||
1115 | return NULL; | |
0f64bb02 | 1116 | } |
157090f7 | 1117 | |
0f64bb02 CM |
1118 | /* Given a bfin relocation type, return the howto. */ |
1119 | static reloc_howto_type * | |
1120 | bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
2c3fc389 | 1121 | unsigned int r_type) |
0f64bb02 CM |
1122 | { |
1123 | if (r_type <= BFIN_RELOC_MAX) | |
1124 | return &bfin_howto_table [r_type]; | |
1125 | ||
0f64bb02 CM |
1126 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1127 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1128 | ||
1129 | return (reloc_howto_type *) NULL; | |
0f64bb02 CM |
1130 | } |
1131 | ||
781303ce | 1132 | /* Set by ld emulation if --code-in-l1. */ |
0a1b45a2 | 1133 | bool elf32_bfin_code_in_l1 = 0; |
781303ce MF |
1134 | |
1135 | /* Set by ld emulation if --data-in-l1. */ | |
0a1b45a2 | 1136 | bool elf32_bfin_data_in_l1 = 0; |
781303ce | 1137 | |
0a1b45a2 | 1138 | static bool |
cc364be6 | 1139 | elf32_bfin_final_write_processing (bfd *abfd) |
781303ce MF |
1140 | { |
1141 | if (elf32_bfin_code_in_l1) | |
1142 | elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1; | |
1143 | if (elf32_bfin_data_in_l1) | |
1144 | elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1; | |
cc364be6 | 1145 | return _bfd_elf_final_write_processing (abfd); |
781303ce MF |
1146 | } |
1147 | ||
0f64bb02 CM |
1148 | /* Return TRUE if the name is a local label. |
1149 | bfin local labels begin with L$. */ | |
0a1b45a2 | 1150 | static bool |
2c3fc389 | 1151 | bfin_is_local_label_name (bfd *abfd, const char *label) |
0f64bb02 CM |
1152 | { |
1153 | if (label[0] == 'L' && label[1] == '$' ) | |
0a1b45a2 | 1154 | return true; |
0f64bb02 CM |
1155 | |
1156 | return _bfd_elf_is_local_label_name (abfd, label); | |
1157 | } | |
c96a8570 BS |
1158 | \f |
1159 | /* Look through the relocs for a section during the first phase, and | |
1160 | allocate space in the global offset table or procedure linkage | |
1161 | table. */ | |
0f64bb02 | 1162 | |
0a1b45a2 | 1163 | static bool |
c96a8570 BS |
1164 | bfin_check_relocs (bfd * abfd, |
1165 | struct bfd_link_info *info, | |
1166 | asection *sec, | |
07d6d2b8 | 1167 | const Elf_Internal_Rela *relocs) |
48d502e1 | 1168 | { |
c96a8570 BS |
1169 | bfd *dynobj; |
1170 | Elf_Internal_Shdr *symtab_hdr; | |
1171 | struct elf_link_hash_entry **sym_hashes; | |
1172 | bfd_signed_vma *local_got_refcounts; | |
1173 | const Elf_Internal_Rela *rel; | |
1174 | const Elf_Internal_Rela *rel_end; | |
48d502e1 | 1175 | asection *sgot; |
c96a8570 | 1176 | asection *srelgot; |
2c3fc389 | 1177 | |
0e1862bb | 1178 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 1179 | return true; |
48d502e1 | 1180 | |
c96a8570 BS |
1181 | dynobj = elf_hash_table (info)->dynobj; |
1182 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1183 | sym_hashes = elf_sym_hashes (abfd); | |
1184 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
48d502e1 | 1185 | |
c96a8570 BS |
1186 | sgot = NULL; |
1187 | srelgot = NULL; | |
48d502e1 | 1188 | |
c96a8570 BS |
1189 | rel_end = relocs + sec->reloc_count; |
1190 | for (rel = relocs; rel < rel_end; rel++) | |
48d502e1 | 1191 | { |
c96a8570 BS |
1192 | unsigned long r_symndx; |
1193 | struct elf_link_hash_entry *h; | |
48d502e1 | 1194 | |
c96a8570 BS |
1195 | r_symndx = ELF32_R_SYM (rel->r_info); |
1196 | if (r_symndx < symtab_hdr->sh_info) | |
1197 | h = NULL; | |
1198 | else | |
81fbe831 AM |
1199 | { |
1200 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
d4e57b87 L |
1201 | while (h->root.type == bfd_link_hash_indirect |
1202 | || h->root.type == bfd_link_hash_warning) | |
1203 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
81fbe831 | 1204 | } |
48d502e1 | 1205 | |
c96a8570 BS |
1206 | switch (ELF32_R_TYPE (rel->r_info)) |
1207 | { | |
1208 | /* This relocation describes the C++ object vtable hierarchy. | |
07d6d2b8 AM |
1209 | Reconstruct it for later use during GC. */ |
1210 | case R_BFIN_GNU_VTINHERIT: | |
1211 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
0a1b45a2 | 1212 | return false; |
07d6d2b8 AM |
1213 | break; |
1214 | ||
1215 | /* This relocation describes which C++ vtable entries | |
1216 | are actually used. Record for later use during GC. */ | |
1217 | case R_BFIN_GNU_VTENTRY: | |
a0ea3a14 | 1218 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
0a1b45a2 | 1219 | return false; |
07d6d2b8 | 1220 | break; |
48d502e1 | 1221 | |
cb88ce9f | 1222 | case R_BFIN_GOT: |
c96a8570 BS |
1223 | if (h != NULL |
1224 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1225 | break; | |
1226 | /* Fall through. */ | |
48d502e1 | 1227 | |
c96a8570 BS |
1228 | if (dynobj == NULL) |
1229 | { | |
1230 | /* Create the .got section. */ | |
1231 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1232 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
0a1b45a2 | 1233 | return false; |
c96a8570 | 1234 | } |
48d502e1 | 1235 | |
ce558b89 AM |
1236 | sgot = elf_hash_table (info)->sgot; |
1237 | srelgot = elf_hash_table (info)->srelgot; | |
1238 | BFD_ASSERT (sgot != NULL); | |
48d502e1 | 1239 | |
c96a8570 BS |
1240 | if (h != NULL) |
1241 | { | |
1242 | if (h->got.refcount == 0) | |
1243 | { | |
1244 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1245 | if (h->dynindx == -1 && !h->forced_local) | |
1246 | { | |
1247 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 1248 | return false; |
c96a8570 | 1249 | } |
48d502e1 | 1250 | |
c96a8570 BS |
1251 | /* Allocate space in the .got section. */ |
1252 | sgot->size += 4; | |
1253 | /* Allocate relocation space. */ | |
1254 | srelgot->size += sizeof (Elf32_External_Rela); | |
1255 | } | |
1256 | h->got.refcount++; | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | /* This is a global offset table entry for a local symbol. */ | |
1261 | if (local_got_refcounts == NULL) | |
1262 | { | |
1263 | bfd_size_type size; | |
48d502e1 | 1264 | |
c96a8570 BS |
1265 | size = symtab_hdr->sh_info; |
1266 | size *= sizeof (bfd_signed_vma); | |
1267 | local_got_refcounts = ((bfd_signed_vma *) | |
1268 | bfd_zalloc (abfd, size)); | |
1269 | if (local_got_refcounts == NULL) | |
0a1b45a2 | 1270 | return false; |
c96a8570 BS |
1271 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
1272 | } | |
1273 | if (local_got_refcounts[r_symndx] == 0) | |
1274 | { | |
1275 | sgot->size += 4; | |
0e1862bb | 1276 | if (bfd_link_pic (info)) |
c96a8570 BS |
1277 | { |
1278 | /* If we are generating a shared object, we need to | |
07d6d2b8 AM |
1279 | output a R_68K_RELATIVE reloc so that the dynamic |
1280 | linker can adjust this GOT entry. */ | |
c96a8570 BS |
1281 | srelgot->size += sizeof (Elf32_External_Rela); |
1282 | } | |
1283 | } | |
1284 | local_got_refcounts[r_symndx]++; | |
1285 | } | |
1286 | break; | |
48d502e1 | 1287 | |
c96a8570 BS |
1288 | default: |
1289 | break; | |
1290 | } | |
1291 | } | |
1292 | ||
0a1b45a2 | 1293 | return true; |
48d502e1 BS |
1294 | } |
1295 | ||
c96a8570 | 1296 | static enum elf_reloc_type_class |
7e612e98 AM |
1297 | elf32_bfin_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1298 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
1299 | const Elf_Internal_Rela * rela) | |
48d502e1 | 1300 | { |
c96a8570 BS |
1301 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
1302 | { | |
1303 | default: | |
1304 | return reloc_class_normal; | |
1305 | } | |
1306 | } | |
1307 | \f | |
1308 | static bfd_reloc_status_type | |
1309 | bfin_final_link_relocate (Elf_Internal_Rela *rel, reloc_howto_type *howto, | |
1310 | bfd *input_bfd, asection *input_section, | |
1311 | bfd_byte *contents, bfd_vma address, | |
1312 | bfd_vma value, bfd_vma addend) | |
1313 | { | |
1314 | int r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 1315 | |
cb88ce9f | 1316 | if (r_type == R_BFIN_PCREL24 || r_type == R_BFIN_PCREL24_JUMP_L) |
c96a8570 BS |
1317 | { |
1318 | bfd_reloc_status_type r = bfd_reloc_ok; | |
1319 | bfd_vma x; | |
48d502e1 | 1320 | |
5d2834cc AM |
1321 | if (!bfd_reloc_offset_in_range (howto, input_bfd, input_section, |
1322 | address - 2)) | |
1323 | return bfd_reloc_outofrange; | |
48d502e1 | 1324 | |
c96a8570 | 1325 | value += addend; |
48d502e1 | 1326 | |
c96a8570 BS |
1327 | /* Perform usual pc-relative correction. */ |
1328 | value -= input_section->output_section->vma + input_section->output_offset; | |
1329 | value -= address; | |
48d502e1 | 1330 | |
c96a8570 BS |
1331 | /* We are getting reloc_entry->address 2 byte off from |
1332 | the start of instruction. Assuming absolute postion | |
1333 | of the reloc data. But, following code had been written assuming | |
1334 | reloc address is starting at begining of instruction. | |
1335 | To compensate that I have increased the value of | |
1336 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
48d502e1 | 1337 | |
c96a8570 BS |
1338 | value += 2; |
1339 | address -= 2; | |
48d502e1 | 1340 | |
c96a8570 BS |
1341 | if ((value & 0xFF000000) != 0 |
1342 | && (value & 0xFF000000) != 0xFF000000) | |
1343 | r = bfd_reloc_overflow; | |
48d502e1 | 1344 | |
c96a8570 | 1345 | value >>= 1; |
48d502e1 | 1346 | |
c96a8570 BS |
1347 | x = bfd_get_16 (input_bfd, contents + address); |
1348 | x = (x & 0xff00) | ((value >> 16) & 0xff); | |
1349 | bfd_put_16 (input_bfd, x, contents + address); | |
48d502e1 | 1350 | |
c96a8570 BS |
1351 | x = bfd_get_16 (input_bfd, contents + address + 2); |
1352 | x = value & 0xFFFF; | |
1353 | bfd_put_16 (input_bfd, x, contents + address + 2); | |
1354 | return r; | |
1355 | } | |
48d502e1 | 1356 | |
c96a8570 BS |
1357 | return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
1358 | rel->r_offset, value, addend); | |
48d502e1 | 1359 | |
48d502e1 BS |
1360 | } |
1361 | ||
0f684201 | 1362 | static int |
c96a8570 BS |
1363 | bfin_relocate_section (bfd * output_bfd, |
1364 | struct bfd_link_info *info, | |
1365 | bfd * input_bfd, | |
1366 | asection * input_section, | |
1367 | bfd_byte * contents, | |
1368 | Elf_Internal_Rela * relocs, | |
1369 | Elf_Internal_Sym * local_syms, | |
1370 | asection ** local_sections) | |
48d502e1 | 1371 | { |
c96a8570 BS |
1372 | bfd *dynobj; |
1373 | Elf_Internal_Shdr *symtab_hdr; | |
1374 | struct elf_link_hash_entry **sym_hashes; | |
1375 | bfd_vma *local_got_offsets; | |
1376 | asection *sgot; | |
c96a8570 BS |
1377 | Elf_Internal_Rela *rel; |
1378 | Elf_Internal_Rela *relend; | |
1379 | int i = 0; | |
48d502e1 | 1380 | |
c96a8570 BS |
1381 | dynobj = elf_hash_table (info)->dynobj; |
1382 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1383 | sym_hashes = elf_sym_hashes (input_bfd); | |
1384 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
48d502e1 | 1385 | |
c96a8570 | 1386 | sgot = NULL; |
48d502e1 | 1387 | |
c96a8570 BS |
1388 | rel = relocs; |
1389 | relend = relocs + input_section->reloc_count; | |
1390 | for (; rel < relend; rel++, i++) | |
1391 | { | |
1392 | int r_type; | |
1393 | reloc_howto_type *howto; | |
1394 | unsigned long r_symndx; | |
1395 | struct elf_link_hash_entry *h; | |
1396 | Elf_Internal_Sym *sym; | |
1397 | asection *sec; | |
1398 | bfd_vma relocation = 0; | |
0a1b45a2 | 1399 | bool unresolved_reloc; |
c96a8570 BS |
1400 | bfd_reloc_status_type r; |
1401 | bfd_vma address; | |
48d502e1 | 1402 | |
c96a8570 BS |
1403 | r_type = ELF32_R_TYPE (rel->r_info); |
1404 | if (r_type < 0 || r_type >= 243) | |
1405 | { | |
1406 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1407 | return false; |
c96a8570 | 1408 | } |
48d502e1 | 1409 | |
c96a8570 | 1410 | if (r_type == R_BFIN_GNU_VTENTRY |
07d6d2b8 | 1411 | || r_type == R_BFIN_GNU_VTINHERIT) |
c96a8570 | 1412 | continue; |
48d502e1 | 1413 | |
c96a8570 BS |
1414 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
1415 | if (howto == NULL) | |
1416 | { | |
1417 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1418 | return false; |
c96a8570 BS |
1419 | } |
1420 | r_symndx = ELF32_R_SYM (rel->r_info); | |
48d502e1 | 1421 | |
c96a8570 BS |
1422 | h = NULL; |
1423 | sym = NULL; | |
1424 | sec = NULL; | |
0a1b45a2 | 1425 | unresolved_reloc = false; |
48d502e1 | 1426 | |
c96a8570 BS |
1427 | if (r_symndx < symtab_hdr->sh_info) |
1428 | { | |
1429 | sym = local_syms + r_symndx; | |
1430 | sec = local_sections[r_symndx]; | |
1431 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1432 | } | |
1433 | else | |
1434 | { | |
0a1b45a2 | 1435 | bool warned, ignored; |
48d502e1 | 1436 | |
c96a8570 BS |
1437 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1438 | r_symndx, symtab_hdr, sym_hashes, | |
1439 | h, sec, relocation, | |
62d887d4 | 1440 | unresolved_reloc, warned, ignored); |
c96a8570 | 1441 | } |
48d502e1 | 1442 | |
dbaa2011 | 1443 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1444 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1445 | rel, 1, relend, howto, 0, contents); |
48d502e1 | 1446 | |
0e1862bb | 1447 | if (bfd_link_relocatable (info)) |
c96a8570 | 1448 | continue; |
48d502e1 | 1449 | |
c96a8570 | 1450 | address = rel->r_offset; |
48d502e1 | 1451 | |
c96a8570 BS |
1452 | /* Then, process normally. */ |
1453 | switch (r_type) | |
1454 | { | |
1455 | case R_BFIN_GNU_VTINHERIT: | |
1456 | case R_BFIN_GNU_VTENTRY: | |
1457 | return bfd_reloc_ok; | |
48d502e1 | 1458 | |
cb88ce9f | 1459 | case R_BFIN_GOT: |
c96a8570 BS |
1460 | /* Relocation is to the address of the entry for this symbol |
1461 | in the global offset table. */ | |
1462 | if (h != NULL | |
1463 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1464 | goto do_default; | |
1465 | /* Fall through. */ | |
1466 | /* Relocation is the offset of the entry for this symbol in | |
1467 | the global offset table. */ | |
48d502e1 | 1468 | |
c96a8570 BS |
1469 | { |
1470 | bfd_vma off; | |
48d502e1 | 1471 | |
ce558b89 | 1472 | if (dynobj == NULL) |
c96a8570 | 1473 | { |
ce558b89 AM |
1474 | /* Create the .got section. */ |
1475 | elf_hash_table (info)->dynobj = dynobj = output_bfd; | |
1476 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
0a1b45a2 | 1477 | return false; |
c96a8570 | 1478 | } |
48d502e1 | 1479 | |
ce558b89 AM |
1480 | sgot = elf_hash_table (info)->sgot; |
1481 | BFD_ASSERT (sgot != NULL); | |
1482 | ||
c96a8570 BS |
1483 | if (h != NULL) |
1484 | { | |
0a1b45a2 | 1485 | bool dyn; |
48d502e1 | 1486 | |
c96a8570 BS |
1487 | off = h->got.offset; |
1488 | BFD_ASSERT (off != (bfd_vma) - 1); | |
1489 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
48d502e1 | 1490 | |
0e1862bb L |
1491 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
1492 | bfd_link_pic (info), | |
1493 | h) | |
1494 | || (bfd_link_pic (info) | |
c96a8570 BS |
1495 | && (info->symbolic |
1496 | || h->dynindx == -1 | |
1497 | || h->forced_local) | |
1498 | && h->def_regular)) | |
1499 | { | |
1500 | /* This is actually a static link, or it is a | |
1501 | -Bsymbolic link and the symbol is defined | |
1502 | locally, or the symbol was forced to be local | |
1503 | because of a version file.. We must initialize | |
1504 | this entry in the global offset table. Since | |
1505 | the offset must always be a multiple of 4, we | |
1506 | use the least significant bit to record whether | |
1507 | we have initialized it already. | |
48d502e1 | 1508 | |
c96a8570 BS |
1509 | When doing a dynamic link, we create a .rela.got |
1510 | relocation entry to initialize the value. This | |
1511 | is done in the finish_dynamic_symbol routine. */ | |
1512 | if ((off & 1) != 0) | |
1513 | off &= ~1; | |
1514 | else | |
1515 | { | |
1516 | bfd_put_32 (output_bfd, relocation, | |
1517 | sgot->contents + off); | |
1518 | h->got.offset |= 1; | |
1519 | } | |
1520 | } | |
1521 | else | |
0a1b45a2 | 1522 | unresolved_reloc = false; |
c96a8570 BS |
1523 | } |
1524 | else | |
1525 | { | |
1526 | BFD_ASSERT (local_got_offsets != NULL); | |
1527 | off = local_got_offsets[r_symndx]; | |
1528 | BFD_ASSERT (off != (bfd_vma) - 1); | |
48d502e1 | 1529 | |
c96a8570 BS |
1530 | /* The offset must always be a multiple of 4. We use |
1531 | the least significant bit to record whether we have | |
1532 | already generated the necessary reloc. */ | |
1533 | if ((off & 1) != 0) | |
1534 | off &= ~1; | |
1535 | else | |
1536 | { | |
1537 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
48d502e1 | 1538 | |
0e1862bb | 1539 | if (bfd_link_pic (info)) |
c96a8570 BS |
1540 | { |
1541 | asection *s; | |
1542 | Elf_Internal_Rela outrel; | |
1543 | bfd_byte *loc; | |
48d502e1 | 1544 | |
ce558b89 | 1545 | s = elf_hash_table (info)->srelgot; |
c96a8570 | 1546 | BFD_ASSERT (s != NULL); |
48d502e1 | 1547 | |
c96a8570 BS |
1548 | outrel.r_offset = (sgot->output_section->vma |
1549 | + sgot->output_offset + off); | |
1550 | outrel.r_info = | |
cb88ce9f | 1551 | ELF32_R_INFO (0, R_BFIN_PCREL24); |
c96a8570 BS |
1552 | outrel.r_addend = relocation; |
1553 | loc = s->contents; | |
1554 | loc += | |
1555 | s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1556 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1557 | } | |
48d502e1 | 1558 | |
c96a8570 BS |
1559 | local_got_offsets[r_symndx] |= 1; |
1560 | } | |
1561 | } | |
48d502e1 | 1562 | |
c96a8570 BS |
1563 | relocation = sgot->output_offset + off; |
1564 | rel->r_addend = 0; | |
07d6d2b8 AM |
1565 | /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ |
1566 | relocation /= 4; | |
c96a8570 BS |
1567 | } |
1568 | goto do_default; | |
1569 | ||
1570 | default: | |
1571 | do_default: | |
1572 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, | |
1573 | contents, address, | |
1574 | relocation, rel->r_addend); | |
1575 | ||
1576 | break; | |
48d502e1 BS |
1577 | } |
1578 | ||
c96a8570 | 1579 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
1580 | because such sections are not SEC_ALLOC and thus ld.so will |
1581 | not process them. */ | |
c96a8570 | 1582 | if (unresolved_reloc |
1d5316ab AM |
1583 | && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic) |
1584 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
1585 | rel->r_offset) != (bfd_vma) -1) | |
48d502e1 | 1586 | { |
4eca0228 | 1587 | _bfd_error_handler |
695344c0 | 1588 | /* xgettext:c-format */ |
2dcf00ce AM |
1589 | (_("%pB(%pA+%#" PRIx64 "): " |
1590 | "unresolvable relocation against symbol `%s'"), | |
1591 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
1592 | h->root.root.string); | |
0a1b45a2 | 1593 | return false; |
48d502e1 | 1594 | } |
48d502e1 | 1595 | |
c96a8570 | 1596 | if (r != bfd_reloc_ok) |
48d502e1 | 1597 | { |
c96a8570 BS |
1598 | const char *name; |
1599 | ||
1600 | if (h != NULL) | |
1601 | name = h->root.root.string; | |
1602 | else | |
48d502e1 | 1603 | { |
c96a8570 BS |
1604 | name = bfd_elf_string_from_elf_section (input_bfd, |
1605 | symtab_hdr->sh_link, | |
1606 | sym->st_name); | |
1607 | if (name == NULL) | |
0a1b45a2 | 1608 | return false; |
c96a8570 | 1609 | if (*name == '\0') |
fd361982 | 1610 | name = bfd_section_name (sec); |
48d502e1 | 1611 | } |
c96a8570 BS |
1612 | |
1613 | if (r == bfd_reloc_overflow) | |
1a72702b AM |
1614 | (*info->callbacks->reloc_overflow) |
1615 | (info, (h ? &h->root : NULL), name, howto->name, | |
1616 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
48d502e1 BS |
1617 | else |
1618 | { | |
4eca0228 | 1619 | _bfd_error_handler |
695344c0 | 1620 | /* xgettext:c-format */ |
2dcf00ce AM |
1621 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
1622 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
1623 | name, (int) r); | |
0a1b45a2 | 1624 | return false; |
48d502e1 | 1625 | } |
48d502e1 | 1626 | } |
48d502e1 BS |
1627 | } |
1628 | ||
0a1b45a2 | 1629 | return true; |
c96a8570 | 1630 | } |
48d502e1 | 1631 | |
c96a8570 BS |
1632 | static asection * |
1633 | bfin_gc_mark_hook (asection * sec, | |
1634 | struct bfd_link_info *info, | |
1635 | Elf_Internal_Rela * rel, | |
1636 | struct elf_link_hash_entry *h, | |
07d6d2b8 | 1637 | Elf_Internal_Sym * sym) |
c96a8570 BS |
1638 | { |
1639 | if (h != NULL) | |
1640 | switch (ELF32_R_TYPE (rel->r_info)) | |
1641 | { | |
1642 | case R_BFIN_GNU_VTINHERIT: | |
1643 | case R_BFIN_GNU_VTENTRY: | |
1644 | return NULL; | |
1645 | } | |
48d502e1 | 1646 | |
c96a8570 BS |
1647 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
1648 | } | |
c96a8570 | 1649 | \f |
6d00b590 AM |
1650 | extern const bfd_target bfin_elf32_fdpic_vec; |
1651 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfin_elf32_fdpic_vec) | |
0f64bb02 | 1652 | |
4dfe6ac6 NC |
1653 | /* An extension of the elf hash table data structure, |
1654 | containing some additional Blackfin-specific data. */ | |
c96a8570 | 1655 | struct bfinfdpic_elf_link_hash_table |
c35e54f4 | 1656 | { |
c96a8570 | 1657 | struct elf_link_hash_table elf; |
c35e54f4 | 1658 | |
c96a8570 BS |
1659 | /* A pointer to the .rofixup section. */ |
1660 | asection *sgotfixup; | |
c96a8570 BS |
1661 | /* GOT base offset. */ |
1662 | bfd_vma got0; | |
1663 | /* Location of the first non-lazy PLT entry, i.e., the number of | |
1664 | bytes taken by lazy PLT entries. */ | |
1665 | bfd_vma plt0; | |
1666 | /* A hash table holding information about which symbols were | |
1667 | referenced with which PIC-related relocations. */ | |
1668 | struct htab *relocs_info; | |
6a9adeca BS |
1669 | /* Summary reloc information collected by |
1670 | _bfinfdpic_count_got_plt_entries. */ | |
1671 | struct _bfinfdpic_dynamic_got_info *g; | |
c96a8570 | 1672 | }; |
c35e54f4 | 1673 | |
c96a8570 | 1674 | /* Get the Blackfin ELF linker hash table from a link_info structure. */ |
c35e54f4 | 1675 | |
0f55320b AM |
1676 | #define bfinfdpic_hash_table(p) \ |
1677 | ((is_elf_hash_table ((p)->hash) \ | |
1678 | && elf_hash_table_id (elf_hash_table (p)) == BFIN_ELF_DATA) \ | |
1679 | ? (struct bfinfdpic_elf_link_hash_table *) (p)->hash : NULL) | |
c35e54f4 | 1680 | |
c96a8570 | 1681 | #define bfinfdpic_got_section(info) \ |
ce558b89 | 1682 | (bfinfdpic_hash_table (info)->elf.sgot) |
c96a8570 | 1683 | #define bfinfdpic_gotrel_section(info) \ |
ce558b89 | 1684 | (bfinfdpic_hash_table (info)->elf.srelgot) |
c96a8570 BS |
1685 | #define bfinfdpic_gotfixup_section(info) \ |
1686 | (bfinfdpic_hash_table (info)->sgotfixup) | |
1687 | #define bfinfdpic_plt_section(info) \ | |
ce558b89 | 1688 | (bfinfdpic_hash_table (info)->elf.splt) |
c96a8570 | 1689 | #define bfinfdpic_pltrel_section(info) \ |
ce558b89 | 1690 | (bfinfdpic_hash_table (info)->elf.srelplt) |
c96a8570 BS |
1691 | #define bfinfdpic_relocs_info(info) \ |
1692 | (bfinfdpic_hash_table (info)->relocs_info) | |
1693 | #define bfinfdpic_got_initial_offset(info) \ | |
1694 | (bfinfdpic_hash_table (info)->got0) | |
1695 | #define bfinfdpic_plt_initial_offset(info) \ | |
1696 | (bfinfdpic_hash_table (info)->plt0) | |
6a9adeca BS |
1697 | #define bfinfdpic_dynamic_got_plt_info(info) \ |
1698 | (bfinfdpic_hash_table (info)->g) | |
c35e54f4 | 1699 | |
c96a8570 BS |
1700 | /* The name of the dynamic interpreter. This is put in the .interp |
1701 | section. */ | |
c35e54f4 | 1702 | |
c96a8570 | 1703 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
c35e54f4 | 1704 | |
c96a8570 | 1705 | #define DEFAULT_STACK_SIZE 0x20000 |
c35e54f4 | 1706 | |
c96a8570 BS |
1707 | /* This structure is used to collect the number of entries present in |
1708 | each addressable range of the got. */ | |
1709 | struct _bfinfdpic_dynamic_got_info | |
1710 | { | |
1711 | /* Several bits of information about the current link. */ | |
1712 | struct bfd_link_info *info; | |
1713 | /* Total size needed for GOT entries within the 18- or 32-bit | |
1714 | ranges. */ | |
1715 | bfd_vma got17m4, gothilo; | |
1716 | /* Total size needed for function descriptor entries within the 18- | |
1717 | or 32-bit ranges. */ | |
1718 | bfd_vma fd17m4, fdhilo; | |
1719 | /* Total size needed function descriptor entries referenced in PLT | |
1720 | entries, that would be profitable to place in offsets close to | |
1721 | the PIC register. */ | |
1722 | bfd_vma fdplt; | |
1723 | /* Total size needed by lazy PLT entries. */ | |
1724 | bfd_vma lzplt; | |
1725 | /* Number of relocations carried over from input object files. */ | |
1726 | unsigned long relocs; | |
1727 | /* Number of fixups introduced by relocations in input object files. */ | |
1728 | unsigned long fixups; | |
1729 | }; | |
c35e54f4 | 1730 | |
c96a8570 | 1731 | /* Create a Blackfin ELF linker hash table. */ |
c35e54f4 | 1732 | |
c96a8570 BS |
1733 | static struct bfd_link_hash_table * |
1734 | bfinfdpic_elf_link_hash_table_create (bfd *abfd) | |
1735 | { | |
1736 | struct bfinfdpic_elf_link_hash_table *ret; | |
986f0783 | 1737 | size_t amt = sizeof (struct bfinfdpic_elf_link_hash_table); |
c35e54f4 | 1738 | |
22cdc249 | 1739 | ret = bfd_zmalloc (amt); |
c96a8570 BS |
1740 | if (ret == NULL) |
1741 | return NULL; | |
c35e54f4 | 1742 | |
c96a8570 BS |
1743 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
1744 | _bfd_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
1745 | sizeof (struct elf_link_hash_entry), |
1746 | BFIN_ELF_DATA)) | |
c96a8570 BS |
1747 | { |
1748 | free (ret); | |
1749 | return NULL; | |
1750 | } | |
c35e54f4 | 1751 | |
c96a8570 BS |
1752 | return &ret->elf.root; |
1753 | } | |
48d502e1 | 1754 | |
c96a8570 BS |
1755 | /* Decide whether a reference to a symbol can be resolved locally or |
1756 | not. If the symbol is protected, we want the local address, but | |
1757 | its function descriptor must be assigned by the dynamic linker. */ | |
1758 | #define BFINFDPIC_SYM_LOCAL(INFO, H) \ | |
1759 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ | |
1760 | || ! elf_hash_table (INFO)->dynamic_sections_created) | |
1761 | #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \ | |
1762 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) | |
48d502e1 | 1763 | |
c96a8570 BS |
1764 | /* This structure collects information on what kind of GOT, PLT or |
1765 | function descriptors are required by relocations that reference a | |
1766 | certain symbol. */ | |
1767 | struct bfinfdpic_relocs_info | |
1768 | { | |
1769 | /* The index of the symbol, as stored in the relocation r_info, if | |
1770 | we have a local symbol; -1 otherwise. */ | |
1771 | long symndx; | |
1772 | union | |
1773 | { | |
1774 | /* The input bfd in which the symbol is defined, if it's a local | |
1775 | symbol. */ | |
1776 | bfd *abfd; | |
1777 | /* If symndx == -1, the hash table entry corresponding to a global | |
1778 | symbol (even if it turns out to bind locally, in which case it | |
1779 | should ideally be replaced with section's symndx + addend). */ | |
1780 | struct elf_link_hash_entry *h; | |
1781 | } d; | |
1782 | /* The addend of the relocation that references the symbol. */ | |
1783 | bfd_vma addend; | |
48d502e1 | 1784 | |
c96a8570 BS |
1785 | /* The fields above are used to identify an entry. The fields below |
1786 | contain information on how an entry is used and, later on, which | |
1787 | locations it was assigned. */ | |
1788 | /* The following 2 fields record whether the symbol+addend above was | |
1789 | ever referenced with a GOT relocation. The 17M4 suffix indicates a | |
1790 | GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */ | |
1791 | unsigned got17m4; | |
1792 | unsigned gothilo; | |
1793 | /* Whether a FUNCDESC relocation references symbol+addend. */ | |
1794 | unsigned fd; | |
1795 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ | |
1796 | unsigned fdgot17m4; | |
1797 | unsigned fdgothilo; | |
1798 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ | |
1799 | unsigned fdgoff17m4; | |
1800 | unsigned fdgoffhilo; | |
1801 | /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or | |
1802 | GOTOFFHI relocations. The addend doesn't really matter, since we | |
1803 | envision that this will only be used to check whether the symbol | |
1804 | is mapped to the same segment as the got. */ | |
1805 | unsigned gotoff; | |
1806 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ | |
1807 | unsigned call; | |
1808 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE | |
1809 | relocation. */ | |
1810 | unsigned sym; | |
1811 | /* Whether we need a PLT entry for a symbol. Should be implied by | |
1812 | something like: | |
1813 | (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */ | |
1814 | unsigned plt:1; | |
1815 | /* Whether a function descriptor should be created in this link unit | |
1816 | for symbol+addend. Should be implied by something like: | |
1817 | (plt || fdgotoff17m4 || fdgotofflohi | |
1818 | || ((fd || fdgot17m4 || fdgothilo) | |
07d6d2b8 | 1819 | && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
c96a8570 BS |
1820 | unsigned privfd:1; |
1821 | /* Whether a lazy PLT entry is needed for this symbol+addend. | |
1822 | Should be implied by something like: | |
1823 | (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h) | |
1824 | && ! (info->flags & DF_BIND_NOW)) */ | |
1825 | unsigned lazyplt:1; | |
1826 | /* Whether we've already emitted GOT relocations and PLT entries as | |
1827 | needed for this symbol. */ | |
1828 | unsigned done:1; | |
48d502e1 | 1829 | |
cb88ce9f | 1830 | /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE |
c96a8570 BS |
1831 | relocations referencing the symbol. */ |
1832 | unsigned relocs32, relocsfd, relocsfdv; | |
48d502e1 | 1833 | |
c96a8570 BS |
1834 | /* The number of .rofixups entries and dynamic relocations allocated |
1835 | for this symbol, minus any that might have already been used. */ | |
1836 | unsigned fixups, dynrelocs; | |
48d502e1 | 1837 | |
c96a8570 BS |
1838 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
1839 | function descriptor's address, and to a function descriptor, | |
1840 | respectively. Should be zero if unassigned. The offsets are | |
1841 | counted from the value that will be assigned to the PIC register, | |
1842 | not from the beginning of the .got section. */ | |
1843 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; | |
1844 | /* The offsets of the PLT entries assigned to symbol+addend, | |
1845 | non-lazy and lazy, respectively. If unassigned, should be | |
1846 | (bfd_vma)-1. */ | |
1847 | bfd_vma plt_entry, lzplt_entry; | |
1848 | }; | |
48d502e1 | 1849 | |
c96a8570 BS |
1850 | /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */ |
1851 | static hashval_t | |
1852 | bfinfdpic_relocs_info_hash (const void *entry_) | |
1853 | { | |
1854 | const struct bfinfdpic_relocs_info *entry = entry_; | |
48d502e1 | 1855 | |
c96a8570 BS |
1856 | return (entry->symndx == -1 |
1857 | ? (long) entry->d.h->root.root.hash | |
1858 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; | |
1859 | } | |
f4707595 | 1860 | |
c96a8570 BS |
1861 | /* Test whether the key fields of two bfinfdpic_relocs_info entries are |
1862 | identical. */ | |
1863 | static int | |
1864 | bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2) | |
0f64bb02 | 1865 | { |
c96a8570 BS |
1866 | const struct bfinfdpic_relocs_info *e1 = entry1; |
1867 | const struct bfinfdpic_relocs_info *e2 = entry2; | |
0f64bb02 | 1868 | |
c96a8570 BS |
1869 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
1870 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); | |
1871 | } | |
48d502e1 | 1872 | |
c96a8570 BS |
1873 | /* Find or create an entry in a hash table HT that matches the key |
1874 | fields of the given ENTRY. If it's not found, memory for a new | |
1875 | entry is allocated in ABFD's obstack. */ | |
1876 | static struct bfinfdpic_relocs_info * | |
1877 | bfinfdpic_relocs_info_find (struct htab *ht, | |
1878 | bfd *abfd, | |
1879 | const struct bfinfdpic_relocs_info *entry, | |
1880 | enum insert_option insert) | |
1881 | { | |
83fd9437 JZ |
1882 | struct bfinfdpic_relocs_info **loc; |
1883 | ||
1884 | if (!ht) | |
1885 | return NULL; | |
1886 | ||
1887 | loc = (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert); | |
0f64bb02 | 1888 | |
c96a8570 BS |
1889 | if (! loc) |
1890 | return NULL; | |
0f64bb02 | 1891 | |
c96a8570 BS |
1892 | if (*loc) |
1893 | return *loc; | |
0f64bb02 | 1894 | |
c96a8570 | 1895 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
0f64bb02 | 1896 | |
c96a8570 BS |
1897 | if (! *loc) |
1898 | return *loc; | |
0f64bb02 | 1899 | |
c96a8570 BS |
1900 | (*loc)->symndx = entry->symndx; |
1901 | (*loc)->d = entry->d; | |
1902 | (*loc)->addend = entry->addend; | |
1903 | (*loc)->plt_entry = (bfd_vma)-1; | |
1904 | (*loc)->lzplt_entry = (bfd_vma)-1; | |
0f64bb02 | 1905 | |
c96a8570 BS |
1906 | return *loc; |
1907 | } | |
48d502e1 | 1908 | |
c96a8570 BS |
1909 | /* Obtain the address of the entry in HT associated with H's symbol + |
1910 | addend, creating a new entry if none existed. ABFD is only used | |
1911 | for memory allocation purposes. */ | |
1912 | inline static struct bfinfdpic_relocs_info * | |
1913 | bfinfdpic_relocs_info_for_global (struct htab *ht, | |
2c3fc389 NC |
1914 | bfd *abfd, |
1915 | struct elf_link_hash_entry *h, | |
1916 | bfd_vma addend, | |
1917 | enum insert_option insert) | |
c96a8570 BS |
1918 | { |
1919 | struct bfinfdpic_relocs_info entry; | |
0f64bb02 | 1920 | |
c96a8570 BS |
1921 | entry.symndx = -1; |
1922 | entry.d.h = h; | |
1923 | entry.addend = addend; | |
f4707595 | 1924 | |
c96a8570 BS |
1925 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1926 | } | |
48d502e1 | 1927 | |
c96a8570 BS |
1928 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
1929 | local symbol of the input bfd ABFD, plus the addend, creating a new | |
1930 | entry if none existed. */ | |
1931 | inline static struct bfinfdpic_relocs_info * | |
1932 | bfinfdpic_relocs_info_for_local (struct htab *ht, | |
1933 | bfd *abfd, | |
1934 | long symndx, | |
1935 | bfd_vma addend, | |
1936 | enum insert_option insert) | |
1937 | { | |
1938 | struct bfinfdpic_relocs_info entry; | |
ab96bf03 | 1939 | |
c96a8570 BS |
1940 | entry.symndx = symndx; |
1941 | entry.d.abfd = abfd; | |
1942 | entry.addend = addend; | |
48d502e1 | 1943 | |
c96a8570 BS |
1944 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1945 | } | |
48d502e1 | 1946 | |
c96a8570 BS |
1947 | /* Merge fields set by check_relocs() of two entries that end up being |
1948 | mapped to the same (presumably global) symbol. */ | |
0f64bb02 | 1949 | |
c96a8570 BS |
1950 | inline static void |
1951 | bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2, | |
2c3fc389 | 1952 | struct bfinfdpic_relocs_info const *e1) |
c96a8570 BS |
1953 | { |
1954 | e2->got17m4 |= e1->got17m4; | |
1955 | e2->gothilo |= e1->gothilo; | |
1956 | e2->fd |= e1->fd; | |
1957 | e2->fdgot17m4 |= e1->fdgot17m4; | |
1958 | e2->fdgothilo |= e1->fdgothilo; | |
1959 | e2->fdgoff17m4 |= e1->fdgoff17m4; | |
1960 | e2->fdgoffhilo |= e1->fdgoffhilo; | |
1961 | e2->gotoff |= e1->gotoff; | |
1962 | e2->call |= e1->call; | |
1963 | e2->sym |= e1->sym; | |
1964 | } | |
48d502e1 | 1965 | |
c96a8570 BS |
1966 | /* Every block of 65535 lazy PLT entries shares a single call to the |
1967 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # | |
1968 | 32767, counting from 0). All other lazy PLT entries branch to it | |
1969 | in a single instruction. */ | |
48d502e1 | 1970 | |
c96a8570 BS |
1971 | #define LZPLT_RESOLVER_EXTRA 10 |
1972 | #define LZPLT_NORMAL_SIZE 6 | |
1973 | #define LZPLT_ENTRIES 1362 | |
48d502e1 | 1974 | |
c96a8570 BS |
1975 | #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA) |
1976 | #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2) | |
48d502e1 | 1977 | |
c96a8570 | 1978 | /* Add a dynamic relocation to the SRELOC section. */ |
48d502e1 | 1979 | |
c96a8570 BS |
1980 | inline static bfd_vma |
1981 | _bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, | |
1982 | int reloc_type, long dynindx, bfd_vma addend, | |
1983 | struct bfinfdpic_relocs_info *entry) | |
1984 | { | |
1985 | Elf_Internal_Rela outrel; | |
1986 | bfd_vma reloc_offset; | |
0f64bb02 | 1987 | |
c96a8570 BS |
1988 | outrel.r_offset = offset; |
1989 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); | |
1990 | outrel.r_addend = addend; | |
48d502e1 | 1991 | |
c96a8570 BS |
1992 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
1993 | BFD_ASSERT (reloc_offset < sreloc->size); | |
1994 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
1995 | sreloc->contents + reloc_offset); | |
1996 | sreloc->reloc_count++; | |
48d502e1 | 1997 | |
c96a8570 BS |
1998 | /* If the entry's index is zero, this relocation was probably to a |
1999 | linkonce section that got discarded. We reserved a dynamic | |
2000 | relocation, but it was for another entry than the one we got at | |
2001 | the time of emitting the relocation. Unfortunately there's no | |
2002 | simple way for us to catch this situation, since the relocation | |
2003 | is cleared right before calling relocate_section, at which point | |
2004 | we no longer know what the relocation used to point to. */ | |
2005 | if (entry->symndx) | |
2006 | { | |
2007 | BFD_ASSERT (entry->dynrelocs > 0); | |
2008 | entry->dynrelocs--; | |
2009 | } | |
48d502e1 | 2010 | |
c96a8570 BS |
2011 | return reloc_offset; |
2012 | } | |
0f64bb02 | 2013 | |
c96a8570 | 2014 | /* Add a fixup to the ROFIXUP section. */ |
48d502e1 | 2015 | |
c96a8570 BS |
2016 | static bfd_vma |
2017 | _bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, | |
2c3fc389 | 2018 | struct bfinfdpic_relocs_info *entry) |
c96a8570 BS |
2019 | { |
2020 | bfd_vma fixup_offset; | |
8aafe8b4 | 2021 | |
c96a8570 BS |
2022 | if (rofixup->flags & SEC_EXCLUDE) |
2023 | return -1; | |
0f64bb02 | 2024 | |
c96a8570 BS |
2025 | fixup_offset = rofixup->reloc_count * 4; |
2026 | if (rofixup->contents) | |
2027 | { | |
2028 | BFD_ASSERT (fixup_offset < rofixup->size); | |
2029 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); | |
2030 | } | |
2031 | rofixup->reloc_count++; | |
0f64bb02 | 2032 | |
c96a8570 BS |
2033 | if (entry && entry->symndx) |
2034 | { | |
2035 | /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc | |
2036 | above. */ | |
2037 | BFD_ASSERT (entry->fixups > 0); | |
2038 | entry->fixups--; | |
2039 | } | |
f4707595 | 2040 | |
c96a8570 BS |
2041 | return fixup_offset; |
2042 | } | |
0f64bb02 | 2043 | |
c96a8570 BS |
2044 | /* Find the segment number in which OSEC, and output section, is |
2045 | located. */ | |
ca889129 | 2046 | |
c96a8570 BS |
2047 | static unsigned |
2048 | _bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec) | |
2049 | { | |
2050 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); | |
0f64bb02 | 2051 | |
c96a8570 BS |
2052 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
2053 | } | |
2054 | ||
0a1b45a2 | 2055 | inline static bool |
c96a8570 BS |
2056 | _bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) |
2057 | { | |
2058 | unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec); | |
2059 | ||
2060 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); | |
2061 | } | |
2062 | ||
2063 | /* Generate relocations for GOT entries, function descriptors, and | |
2064 | code for PLT and lazy PLT entries. */ | |
2065 | ||
0a1b45a2 | 2066 | inline static bool |
c96a8570 BS |
2067 | _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry, |
2068 | bfd *output_bfd, | |
2069 | struct bfd_link_info *info, | |
2070 | asection *sec, | |
2071 | Elf_Internal_Sym *sym, | |
2072 | bfd_vma addend) | |
c96a8570 | 2073 | { |
2c3fc389 | 2074 | bfd_vma fd_lazy_rel_offset = (bfd_vma) -1; |
c96a8570 BS |
2075 | int dynindx = -1; |
2076 | ||
2077 | if (entry->done) | |
0a1b45a2 | 2078 | return true; |
c96a8570 BS |
2079 | entry->done = 1; |
2080 | ||
2081 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) | |
2082 | { | |
2083 | /* If the symbol is dynamic, consider it for dynamic | |
2084 | relocations, otherwise decay to section + offset. */ | |
2085 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) | |
2086 | dynindx = entry->d.h->dynindx; | |
2087 | else | |
2088 | { | |
6a9adeca BS |
2089 | if (sec |
2090 | && sec->output_section | |
c96a8570 BS |
2091 | && ! bfd_is_abs_section (sec->output_section) |
2092 | && ! bfd_is_und_section (sec->output_section)) | |
2093 | dynindx = elf_section_data (sec->output_section)->dynindx; | |
2094 | else | |
2095 | dynindx = 0; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | /* Generate relocation for GOT entry pointing to the symbol. */ | |
2100 | if (entry->got_entry) | |
2101 | { | |
2102 | int idx = dynindx; | |
2103 | bfd_vma ad = addend; | |
2104 | ||
2105 | /* If the symbol is dynamic but binds locally, use | |
2106 | section+offset. */ | |
2107 | if (sec && (entry->symndx != -1 | |
2108 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2109 | { | |
2110 | if (entry->symndx == -1) | |
2111 | ad += entry->d.h->root.u.def.value; | |
2112 | else | |
2113 | ad += sym->st_value; | |
2114 | ad += sec->output_offset; | |
2115 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2116 | idx = elf_section_data (sec->output_section)->dynindx; | |
2117 | else | |
2118 | idx = 0; | |
2119 | } | |
2120 | ||
2121 | /* If we're linking an executable at a fixed address, we can | |
2122 | omit the dynamic relocation as long as the symbol is local to | |
2123 | this module. */ | |
3cbc1e5e | 2124 | if (bfd_link_pde (info) |
c96a8570 BS |
2125 | && (entry->symndx != -1 |
2126 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2127 | { | |
2128 | if (sec) | |
2129 | ad += sec->output_section->vma; | |
2130 | if (entry->symndx != -1 | |
2131 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2132 | _bfinfdpic_add_rofixup (output_bfd, | |
2133 | bfinfdpic_gotfixup_section (info), | |
2134 | bfinfdpic_got_section (info)->output_section | |
2135 | ->vma | |
2136 | + bfinfdpic_got_section (info)->output_offset | |
2137 | + bfinfdpic_got_initial_offset (info) | |
2138 | + entry->got_entry, entry); | |
2139 | } | |
2140 | else | |
2141 | _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info), | |
2142 | _bfd_elf_section_offset | |
2143 | (output_bfd, info, | |
2144 | bfinfdpic_got_section (info), | |
2145 | bfinfdpic_got_initial_offset (info) | |
2146 | + entry->got_entry) | |
2147 | + bfinfdpic_got_section (info) | |
2148 | ->output_section->vma | |
2149 | + bfinfdpic_got_section (info)->output_offset, | |
cb88ce9f | 2150 | R_BFIN_BYTE4_DATA, idx, ad, entry); |
c96a8570 BS |
2151 | |
2152 | bfd_put_32 (output_bfd, ad, | |
2153 | bfinfdpic_got_section (info)->contents | |
2154 | + bfinfdpic_got_initial_offset (info) | |
2155 | + entry->got_entry); | |
2156 | } | |
2157 | ||
2158 | /* Generate relocation for GOT entry pointing to a canonical | |
2159 | function descriptor. */ | |
2160 | if (entry->fdgot_entry) | |
2161 | { | |
2162 | int reloc, idx; | |
2163 | bfd_vma ad = 0; | |
2164 | ||
2165 | if (! (entry->symndx == -1 | |
2166 | && entry->d.h->root.type == bfd_link_hash_undefweak | |
2167 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2168 | { | |
2169 | /* If the symbol is dynamic and there may be dynamic symbol | |
2170 | resolution because we are, or are linked with, a shared | |
2171 | library, emit a FUNCDESC relocation such that the dynamic | |
2172 | linker will allocate the function descriptor. If the | |
2173 | symbol needs a non-local function descriptor but binds | |
2174 | locally (e.g., its visibility is protected, emit a | |
2175 | dynamic relocation decayed to section+offset. */ | |
2176 | if (entry->symndx == -1 | |
2177 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h) | |
2178 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h) | |
3cbc1e5e | 2179 | && !bfd_link_pde (info)) |
c96a8570 BS |
2180 | { |
2181 | reloc = R_BFIN_FUNCDESC; | |
2182 | idx = elf_section_data (entry->d.h->root.u.def.section | |
2183 | ->output_section)->dynindx; | |
2184 | ad = entry->d.h->root.u.def.section->output_offset | |
2185 | + entry->d.h->root.u.def.value; | |
2186 | } | |
2187 | else if (entry->symndx == -1 | |
2188 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) | |
2189 | { | |
2190 | reloc = R_BFIN_FUNCDESC; | |
2191 | idx = dynindx; | |
2192 | ad = addend; | |
2193 | if (ad) | |
0a1b45a2 | 2194 | return false; |
c96a8570 BS |
2195 | } |
2196 | else | |
2197 | { | |
2198 | /* Otherwise, we know we have a private function descriptor, | |
2199 | so reference it directly. */ | |
2200 | if (elf_hash_table (info)->dynamic_sections_created) | |
2201 | BFD_ASSERT (entry->privfd); | |
cb88ce9f | 2202 | reloc = R_BFIN_BYTE4_DATA; |
c96a8570 BS |
2203 | idx = elf_section_data (bfinfdpic_got_section (info) |
2204 | ->output_section)->dynindx; | |
2205 | ad = bfinfdpic_got_section (info)->output_offset | |
2206 | + bfinfdpic_got_initial_offset (info) + entry->fd_entry; | |
2207 | } | |
2208 | ||
2209 | /* If there is room for dynamic symbol resolution, emit the | |
2210 | dynamic relocation. However, if we're linking an | |
2211 | executable at a fixed location, we won't have emitted a | |
2212 | dynamic symbol entry for the got section, so idx will be | |
2213 | zero, which means we can and should compute the address | |
2214 | of the private descriptor ourselves. */ | |
3cbc1e5e | 2215 | if (bfd_link_pde (info) |
c96a8570 BS |
2216 | && (entry->symndx != -1 |
2217 | || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) | |
2218 | { | |
2219 | ad += bfinfdpic_got_section (info)->output_section->vma; | |
2220 | _bfinfdpic_add_rofixup (output_bfd, | |
2221 | bfinfdpic_gotfixup_section (info), | |
2222 | bfinfdpic_got_section (info) | |
2223 | ->output_section->vma | |
2224 | + bfinfdpic_got_section (info) | |
2225 | ->output_offset | |
2226 | + bfinfdpic_got_initial_offset (info) | |
2227 | + entry->fdgot_entry, entry); | |
2228 | } | |
2229 | else | |
2230 | _bfinfdpic_add_dyn_reloc (output_bfd, | |
2231 | bfinfdpic_gotrel_section (info), | |
2232 | _bfd_elf_section_offset | |
2233 | (output_bfd, info, | |
2234 | bfinfdpic_got_section (info), | |
2235 | bfinfdpic_got_initial_offset (info) | |
2236 | + entry->fdgot_entry) | |
2237 | + bfinfdpic_got_section (info) | |
2238 | ->output_section->vma | |
2239 | + bfinfdpic_got_section (info) | |
2240 | ->output_offset, | |
2241 | reloc, idx, ad, entry); | |
2242 | } | |
f4707595 | 2243 | |
c96a8570 BS |
2244 | bfd_put_32 (output_bfd, ad, |
2245 | bfinfdpic_got_section (info)->contents | |
2246 | + bfinfdpic_got_initial_offset (info) | |
2247 | + entry->fdgot_entry); | |
2248 | } | |
2249 | ||
2250 | /* Generate relocation to fill in a private function descriptor in | |
2251 | the GOT. */ | |
2252 | if (entry->fd_entry) | |
2253 | { | |
2254 | int idx = dynindx; | |
2255 | bfd_vma ad = addend; | |
2256 | bfd_vma ofst; | |
2257 | long lowword, highword; | |
2258 | ||
2259 | /* If the symbol is dynamic but binds locally, use | |
2260 | section+offset. */ | |
2261 | if (sec && (entry->symndx != -1 | |
2262 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2263 | { | |
2264 | if (entry->symndx == -1) | |
2265 | ad += entry->d.h->root.u.def.value; | |
2266 | else | |
2267 | ad += sym->st_value; | |
2268 | ad += sec->output_offset; | |
2269 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2270 | idx = elf_section_data (sec->output_section)->dynindx; | |
2271 | else | |
2272 | idx = 0; | |
48d502e1 | 2273 | } |
f4707595 | 2274 | |
c96a8570 BS |
2275 | /* If we're linking an executable at a fixed address, we can |
2276 | omit the dynamic relocation as long as the symbol is local to | |
2277 | this module. */ | |
3cbc1e5e | 2278 | if (bfd_link_pde (info) |
c96a8570 | 2279 | && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
48d502e1 | 2280 | { |
c96a8570 BS |
2281 | if (sec) |
2282 | ad += sec->output_section->vma; | |
2283 | ofst = 0; | |
2284 | if (entry->symndx != -1 | |
2285 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2286 | { | |
2287 | _bfinfdpic_add_rofixup (output_bfd, | |
2288 | bfinfdpic_gotfixup_section (info), | |
2289 | bfinfdpic_got_section (info) | |
2290 | ->output_section->vma | |
2291 | + bfinfdpic_got_section (info) | |
2292 | ->output_offset | |
2293 | + bfinfdpic_got_initial_offset (info) | |
2294 | + entry->fd_entry, entry); | |
2295 | _bfinfdpic_add_rofixup (output_bfd, | |
2296 | bfinfdpic_gotfixup_section (info), | |
2297 | bfinfdpic_got_section (info) | |
2298 | ->output_section->vma | |
2299 | + bfinfdpic_got_section (info) | |
2300 | ->output_offset | |
2301 | + bfinfdpic_got_initial_offset (info) | |
2302 | + entry->fd_entry + 4, entry); | |
2303 | } | |
2304 | } | |
2305 | else | |
2306 | { | |
2307 | ofst | |
2308 | = _bfinfdpic_add_dyn_reloc (output_bfd, | |
2309 | entry->lazyplt | |
2310 | ? bfinfdpic_pltrel_section (info) | |
2311 | : bfinfdpic_gotrel_section (info), | |
2312 | _bfd_elf_section_offset | |
2313 | (output_bfd, info, | |
2314 | bfinfdpic_got_section (info), | |
2315 | bfinfdpic_got_initial_offset (info) | |
2316 | + entry->fd_entry) | |
2317 | + bfinfdpic_got_section (info) | |
2318 | ->output_section->vma | |
2319 | + bfinfdpic_got_section (info) | |
2320 | ->output_offset, | |
2321 | R_BFIN_FUNCDESC_VALUE, idx, ad, entry); | |
48d502e1 | 2322 | } |
f4707595 | 2323 | |
c96a8570 BS |
2324 | /* If we've omitted the dynamic relocation, just emit the fixed |
2325 | addresses of the symbol and of the local GOT base offset. */ | |
3cbc1e5e | 2326 | if (bfd_link_pde (info) |
0e1862bb L |
2327 | && sec |
2328 | && sec->output_section) | |
48d502e1 | 2329 | { |
c96a8570 BS |
2330 | lowword = ad; |
2331 | highword = bfinfdpic_got_section (info)->output_section->vma | |
2332 | + bfinfdpic_got_section (info)->output_offset | |
2333 | + bfinfdpic_got_initial_offset (info); | |
2334 | } | |
2335 | else if (entry->lazyplt) | |
2336 | { | |
2337 | if (ad) | |
0a1b45a2 | 2338 | return false; |
f4707595 | 2339 | |
c96a8570 | 2340 | fd_lazy_rel_offset = ofst; |
f4707595 | 2341 | |
c96a8570 BS |
2342 | /* A function descriptor used for lazy or local resolving is |
2343 | initialized such that its high word contains the output | |
2344 | section index in which the PLT entries are located, and | |
2345 | the low word contains the address of the lazy PLT entry | |
2346 | entry point, that must be within the memory region | |
2347 | assigned to that section. */ | |
2348 | lowword = entry->lzplt_entry + 4 | |
2349 | + bfinfdpic_plt_section (info)->output_offset | |
2350 | + bfinfdpic_plt_section (info)->output_section->vma; | |
2351 | highword = _bfinfdpic_osec_to_segment | |
2352 | (output_bfd, bfinfdpic_plt_section (info)->output_section); | |
2353 | } | |
2354 | else | |
2355 | { | |
2356 | /* A function descriptor for a local function gets the index | |
2357 | of the section. For a non-local function, it's | |
2358 | disregarded. */ | |
2359 | lowword = ad; | |
6a9adeca BS |
2360 | if (sec == NULL |
2361 | || (entry->symndx == -1 && entry->d.h->dynindx != -1 | |
2362 | && entry->d.h->dynindx == idx)) | |
c96a8570 BS |
2363 | highword = 0; |
2364 | else | |
2365 | highword = _bfinfdpic_osec_to_segment | |
2366 | (output_bfd, sec->output_section); | |
48d502e1 | 2367 | } |
f4707595 | 2368 | |
c96a8570 BS |
2369 | bfd_put_32 (output_bfd, lowword, |
2370 | bfinfdpic_got_section (info)->contents | |
2371 | + bfinfdpic_got_initial_offset (info) | |
2372 | + entry->fd_entry); | |
2373 | bfd_put_32 (output_bfd, highword, | |
2374 | bfinfdpic_got_section (info)->contents | |
2375 | + bfinfdpic_got_initial_offset (info) | |
2376 | + entry->fd_entry + 4); | |
2377 | } | |
2378 | ||
2379 | /* Generate code for the PLT entry. */ | |
2380 | if (entry->plt_entry != (bfd_vma) -1) | |
2381 | { | |
2382 | bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents | |
2383 | + entry->plt_entry; | |
2384 | ||
2385 | BFD_ASSERT (entry->fd_entry); | |
2386 | ||
2387 | /* Figure out what kind of PLT entry we need, depending on the | |
2388 | location of the function descriptor within the GOT. */ | |
2389 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
2390 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
48d502e1 | 2391 | { |
c96a8570 BS |
2392 | /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */ |
2393 | bfd_put_32 (output_bfd, | |
2394 | 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000), | |
2395 | plt_code); | |
2396 | bfd_put_32 (output_bfd, | |
2397 | 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000), | |
2398 | plt_code + 4); | |
2399 | plt_code += 8; | |
2400 | } | |
2401 | else | |
2402 | { | |
2403 | /* P1.L = fd_entry; P1.H = fd_entry; | |
2404 | P3 = P3 + P1; | |
2405 | P1 = [P3]; | |
2406 | P3 = [P3 + 4]; */ | |
2407 | bfd_put_32 (output_bfd, | |
2408 | 0xe109 | (entry->fd_entry << 16), | |
2409 | plt_code); | |
2410 | bfd_put_32 (output_bfd, | |
2411 | 0xe149 | (entry->fd_entry & 0xFFFF0000), | |
2412 | plt_code + 4); | |
2413 | bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8); | |
2414 | bfd_put_16 (output_bfd, 0x9159, plt_code + 10); | |
2415 | bfd_put_16 (output_bfd, 0xac5b, plt_code + 12); | |
2416 | plt_code += 14; | |
2417 | } | |
2418 | /* JUMP (P1) */ | |
2419 | bfd_put_16 (output_bfd, 0x0051, plt_code); | |
2420 | } | |
f4707595 | 2421 | |
c96a8570 BS |
2422 | /* Generate code for the lazy PLT entry. */ |
2423 | if (entry->lzplt_entry != (bfd_vma) -1) | |
2424 | { | |
2425 | bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents | |
2426 | + entry->lzplt_entry; | |
2427 | bfd_vma resolverStub_addr; | |
0f64bb02 | 2428 | |
c96a8570 BS |
2429 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
2430 | lzplt_code += 4; | |
0f64bb02 | 2431 | |
c96a8570 BS |
2432 | resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE |
2433 | * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC; | |
2434 | if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info)) | |
2435 | resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA; | |
0f64bb02 | 2436 | |
c96a8570 | 2437 | if (entry->lzplt_entry == resolverStub_addr) |
0f64bb02 | 2438 | { |
c96a8570 BS |
2439 | /* This is a lazy PLT entry that includes a resolver call. |
2440 | P2 = [P3]; | |
2441 | R3 = [P3 + 4]; | |
2442 | JUMP (P2); */ | |
2443 | bfd_put_32 (output_bfd, | |
2444 | 0xa05b915a, | |
2445 | lzplt_code); | |
2446 | bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4); | |
2447 | } | |
2448 | else | |
2449 | { | |
2450 | /* JUMP.S resolverStub */ | |
2451 | bfd_put_16 (output_bfd, | |
2452 | 0x2000 | |
2453 | | (((resolverStub_addr - entry->lzplt_entry) | |
2454 | / 2) & (((bfd_vma)1 << 12) - 1)), | |
2455 | lzplt_code); | |
2456 | } | |
2457 | } | |
0f64bb02 | 2458 | |
0a1b45a2 | 2459 | return true; |
c96a8570 BS |
2460 | } |
2461 | \f | |
2462 | /* Relocate an Blackfin ELF section. | |
48d502e1 | 2463 | |
c96a8570 BS |
2464 | The RELOCATE_SECTION function is called by the new ELF backend linker |
2465 | to handle the relocations for a section. | |
48d502e1 | 2466 | |
c96a8570 BS |
2467 | The relocs are always passed as Rela structures; if the section |
2468 | actually uses Rel structures, the r_addend field will always be | |
2469 | zero. | |
48d502e1 | 2470 | |
c96a8570 BS |
2471 | This function is responsible for adjusting the section contents as |
2472 | necessary, and (if using Rela relocs and generating a relocatable | |
2473 | output file) adjusting the reloc addend as necessary. | |
48d502e1 | 2474 | |
c96a8570 BS |
2475 | This function does not have to worry about setting the reloc |
2476 | address or the reloc symbol index. | |
48d502e1 | 2477 | |
c96a8570 | 2478 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
48d502e1 | 2479 | |
c96a8570 BS |
2480 | LOCAL_SECTIONS is an array giving the section in the input file |
2481 | corresponding to the st_shndx field of each local symbol. | |
48d502e1 | 2482 | |
c96a8570 BS |
2483 | The global hash table entry for the global symbols can be found |
2484 | via elf_sym_hashes (input_bfd). | |
48d502e1 | 2485 | |
c96a8570 BS |
2486 | When generating relocatable output, this function must handle |
2487 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
2488 | going to be the section symbol corresponding to the output | |
2489 | section, which means that the addend must be adjusted | |
2490 | accordingly. */ | |
48d502e1 | 2491 | |
0f684201 | 2492 | static int |
c96a8570 BS |
2493 | bfinfdpic_relocate_section (bfd * output_bfd, |
2494 | struct bfd_link_info *info, | |
2495 | bfd * input_bfd, | |
2496 | asection * input_section, | |
2497 | bfd_byte * contents, | |
2498 | Elf_Internal_Rela * relocs, | |
2499 | Elf_Internal_Sym * local_syms, | |
2500 | asection ** local_sections) | |
48d502e1 | 2501 | { |
48d502e1 BS |
2502 | Elf_Internal_Shdr *symtab_hdr; |
2503 | struct elf_link_hash_entry **sym_hashes; | |
48d502e1 BS |
2504 | Elf_Internal_Rela *rel; |
2505 | Elf_Internal_Rela *relend; | |
c96a8570 BS |
2506 | unsigned isec_segment, got_segment, plt_segment, |
2507 | check_segment[2]; | |
0e1862bb | 2508 | int silence_segment_error = !bfd_link_pic (info); |
48d502e1 | 2509 | |
c96a8570 | 2510 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
48d502e1 | 2511 | sym_hashes = elf_sym_hashes (input_bfd); |
c96a8570 | 2512 | relend = relocs + input_section->reloc_count; |
48d502e1 | 2513 | |
c96a8570 BS |
2514 | isec_segment = _bfinfdpic_osec_to_segment (output_bfd, |
2515 | input_section->output_section); | |
2516 | if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info)) | |
2517 | got_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2518 | bfinfdpic_got_section (info) | |
2519 | ->output_section); | |
2520 | else | |
2521 | got_segment = -1; | |
2522 | if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created) | |
2523 | plt_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2524 | bfinfdpic_plt_section (info) | |
2525 | ->output_section); | |
2526 | else | |
2527 | plt_segment = -1; | |
48d502e1 | 2528 | |
c96a8570 | 2529 | for (rel = relocs; rel < relend; rel ++) |
48d502e1 | 2530 | { |
48d502e1 BS |
2531 | reloc_howto_type *howto; |
2532 | unsigned long r_symndx; | |
48d502e1 BS |
2533 | Elf_Internal_Sym *sym; |
2534 | asection *sec; | |
c96a8570 BS |
2535 | struct elf_link_hash_entry *h; |
2536 | bfd_vma relocation; | |
48d502e1 | 2537 | bfd_reloc_status_type r; |
c96a8570 BS |
2538 | const char * name = NULL; |
2539 | int r_type; | |
2540 | asection *osec; | |
2541 | struct bfinfdpic_relocs_info *picrel; | |
2542 | bfd_vma orig_addend = rel->r_addend; | |
48d502e1 BS |
2543 | |
2544 | r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 2545 | |
c96a8570 BS |
2546 | if (r_type == R_BFIN_GNU_VTINHERIT |
2547 | || r_type == R_BFIN_GNU_VTENTRY) | |
48d502e1 BS |
2548 | continue; |
2549 | ||
c96a8570 | 2550 | r_symndx = ELF32_R_SYM (rel->r_info); |
48d502e1 BS |
2551 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
2552 | if (howto == NULL) | |
2553 | { | |
2554 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 2555 | return false; |
48d502e1 | 2556 | } |
48d502e1 | 2557 | |
c96a8570 BS |
2558 | h = NULL; |
2559 | sym = NULL; | |
2560 | sec = NULL; | |
8a4ba3a1 | 2561 | picrel = NULL; |
c96a8570 BS |
2562 | |
2563 | if (r_symndx < symtab_hdr->sh_info) | |
2564 | { | |
2565 | sym = local_syms + r_symndx; | |
2566 | osec = sec = local_sections [r_symndx]; | |
2567 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2568 | ||
2569 | name = bfd_elf_string_from_elf_section | |
2570 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
fd361982 | 2571 | name = name == NULL ? bfd_section_name (sec) : name; |
c96a8570 BS |
2572 | } |
2573 | else | |
2574 | { | |
0a1b45a2 AM |
2575 | bool warned, ignored; |
2576 | bool unresolved_reloc; | |
c96a8570 BS |
2577 | |
2578 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2579 | r_symndx, symtab_hdr, sym_hashes, | |
2580 | h, sec, relocation, | |
62d887d4 | 2581 | unresolved_reloc, warned, ignored); |
c96a8570 BS |
2582 | osec = sec; |
2583 | } | |
2584 | ||
dbaa2011 | 2585 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2586 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2587 | rel, 1, relend, howto, 0, contents); |
c96a8570 | 2588 | |
0e1862bb | 2589 | if (bfd_link_relocatable (info)) |
c96a8570 BS |
2590 | continue; |
2591 | ||
2592 | if (h != NULL | |
2593 | && (h->root.type == bfd_link_hash_defined | |
2594 | || h->root.type == bfd_link_hash_defweak) | |
2595 | && !BFINFDPIC_SYM_LOCAL (info, h)) | |
2596 | { | |
2597 | osec = sec = NULL; | |
2598 | relocation = 0; | |
2599 | } | |
2600 | ||
2601 | switch (r_type) | |
2602 | { | |
cb88ce9f BS |
2603 | case R_BFIN_PCREL24: |
2604 | case R_BFIN_PCREL24_JUMP_L: | |
2605 | case R_BFIN_BYTE4_DATA: | |
c96a8570 BS |
2606 | if (! IS_FDPIC (output_bfd)) |
2607 | goto non_fdpic; | |
1a0670f3 | 2608 | /* Fall through. */ |
c96a8570 BS |
2609 | |
2610 | case R_BFIN_GOT17M4: | |
2611 | case R_BFIN_GOTHI: | |
2612 | case R_BFIN_GOTLO: | |
2613 | case R_BFIN_FUNCDESC_GOT17M4: | |
2614 | case R_BFIN_FUNCDESC_GOTHI: | |
2615 | case R_BFIN_FUNCDESC_GOTLO: | |
2616 | case R_BFIN_GOTOFF17M4: | |
2617 | case R_BFIN_GOTOFFHI: | |
2618 | case R_BFIN_GOTOFFLO: | |
2619 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2620 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2621 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2622 | case R_BFIN_FUNCDESC: | |
2623 | case R_BFIN_FUNCDESC_VALUE: | |
981f1518 L |
2624 | if ((input_section->flags & SEC_ALLOC) == 0) |
2625 | break; | |
2626 | ||
c96a8570 BS |
2627 | if (h != NULL) |
2628 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info | |
2629 | (info), input_bfd, h, | |
2630 | orig_addend, INSERT); | |
2631 | else | |
2632 | /* In order to find the entry we created before, we must | |
2633 | use the original addend, not the one that may have been | |
2634 | modified by _bfd_elf_rela_local_sym(). */ | |
2635 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
2636 | (info), input_bfd, r_symndx, | |
2637 | orig_addend, INSERT); | |
2638 | if (! picrel) | |
0a1b45a2 | 2639 | return false; |
c96a8570 BS |
2640 | |
2641 | if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, | |
2642 | osec, sym, | |
2643 | rel->r_addend)) | |
2644 | { | |
4eca0228 | 2645 | _bfd_error_handler |
695344c0 | 2646 | /* xgettext:c-format */ |
2dcf00ce AM |
2647 | (_("%pB: relocation at `%pA+%#" PRIx64 "' " |
2648 | "references symbol `%s' with nonzero addend"), | |
2649 | input_bfd, input_section, (uint64_t) rel->r_offset, name); | |
0a1b45a2 | 2650 | return false; |
c96a8570 BS |
2651 | |
2652 | } | |
48d502e1 | 2653 | |
c96a8570 | 2654 | break; |
ab96bf03 | 2655 | |
c96a8570 BS |
2656 | default: |
2657 | non_fdpic: | |
2658 | picrel = NULL; | |
1d5316ab AM |
2659 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h) |
2660 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
2661 | rel->r_offset) != (bfd_vma) -1) | |
c96a8570 BS |
2662 | { |
2663 | info->callbacks->warning | |
2664 | (info, _("relocation references symbol not defined in the module"), | |
2665 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2666 | return false; |
c96a8570 BS |
2667 | } |
2668 | break; | |
48d502e1 BS |
2669 | } |
2670 | ||
c96a8570 | 2671 | switch (r_type) |
ab96bf03 | 2672 | { |
cb88ce9f BS |
2673 | case R_BFIN_PCREL24: |
2674 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
2675 | check_segment[0] = isec_segment; |
2676 | if (! IS_FDPIC (output_bfd)) | |
2677 | check_segment[1] = isec_segment; | |
2678 | else if (picrel->plt) | |
2679 | { | |
2680 | relocation = bfinfdpic_plt_section (info)->output_section->vma | |
2681 | + bfinfdpic_plt_section (info)->output_offset | |
2682 | + picrel->plt_entry; | |
2683 | check_segment[1] = plt_segment; | |
2684 | } | |
2685 | /* We don't want to warn on calls to undefined weak symbols, | |
2686 | as calls to them must be protected by non-NULL tests | |
2687 | anyway, and unprotected calls would invoke undefined | |
2688 | behavior. */ | |
2689 | else if (picrel->symndx == -1 | |
2690 | && picrel->d.h->root.type == bfd_link_hash_undefweak) | |
2691 | check_segment[1] = check_segment[0]; | |
2692 | else | |
2693 | check_segment[1] = sec | |
2694 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2695 | : (unsigned)-1; | |
2696 | break; | |
ab96bf03 | 2697 | |
c96a8570 BS |
2698 | case R_BFIN_GOT17M4: |
2699 | case R_BFIN_GOTHI: | |
2700 | case R_BFIN_GOTLO: | |
2701 | relocation = picrel->got_entry; | |
2702 | check_segment[0] = check_segment[1] = got_segment; | |
2703 | break; | |
ab96bf03 | 2704 | |
c96a8570 BS |
2705 | case R_BFIN_FUNCDESC_GOT17M4: |
2706 | case R_BFIN_FUNCDESC_GOTHI: | |
2707 | case R_BFIN_FUNCDESC_GOTLO: | |
2708 | relocation = picrel->fdgot_entry; | |
2709 | check_segment[0] = check_segment[1] = got_segment; | |
2710 | break; | |
48d502e1 | 2711 | |
c96a8570 BS |
2712 | case R_BFIN_GOTOFFHI: |
2713 | case R_BFIN_GOTOFF17M4: | |
2714 | case R_BFIN_GOTOFFLO: | |
2715 | relocation -= bfinfdpic_got_section (info)->output_section->vma | |
2716 | + bfinfdpic_got_section (info)->output_offset | |
2717 | + bfinfdpic_got_initial_offset (info); | |
2718 | check_segment[0] = got_segment; | |
2719 | check_segment[1] = sec | |
2720 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2721 | : (unsigned)-1; | |
2722 | break; | |
48d502e1 | 2723 | |
c96a8570 BS |
2724 | case R_BFIN_FUNCDESC_GOTOFF17M4: |
2725 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2726 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2727 | relocation = picrel->fd_entry; | |
2728 | check_segment[0] = check_segment[1] = got_segment; | |
2729 | break; | |
48d502e1 | 2730 | |
c96a8570 | 2731 | case R_BFIN_FUNCDESC: |
8ca9c7eb L |
2732 | if ((input_section->flags & SEC_ALLOC) != 0) |
2733 | { | |
2734 | int dynindx; | |
2735 | bfd_vma addend = rel->r_addend; | |
c96a8570 | 2736 | |
8ca9c7eb L |
2737 | if (! (h && h->root.type == bfd_link_hash_undefweak |
2738 | && BFINFDPIC_SYM_LOCAL (info, h))) | |
2739 | { | |
2740 | /* If the symbol is dynamic and there may be dynamic | |
2741 | symbol resolution because we are or are linked with a | |
2742 | shared library, emit a FUNCDESC relocation such that | |
2743 | the dynamic linker will allocate the function | |
2744 | descriptor. If the symbol needs a non-local function | |
2745 | descriptor but binds locally (e.g., its visibility is | |
2746 | protected, emit a dynamic relocation decayed to | |
2747 | section+offset. */ | |
2748 | if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h) | |
2749 | && BFINFDPIC_SYM_LOCAL (info, h) | |
2750 | && !bfd_link_pde (info)) | |
2751 | { | |
2752 | dynindx = elf_section_data (h->root.u.def.section | |
2753 | ->output_section)->dynindx; | |
2754 | addend += h->root.u.def.section->output_offset | |
2755 | + h->root.u.def.value; | |
2756 | } | |
2757 | else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)) | |
2758 | { | |
2759 | if (addend) | |
2760 | { | |
2761 | info->callbacks->warning | |
2762 | (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"), | |
2763 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2764 | return false; |
8ca9c7eb L |
2765 | } |
2766 | dynindx = h->dynindx; | |
2767 | } | |
2768 | else | |
2769 | { | |
2770 | /* Otherwise, we know we have a private function | |
2771 | descriptor, so reference it directly. */ | |
2772 | BFD_ASSERT (picrel->privfd); | |
2773 | r_type = R_BFIN_BYTE4_DATA; | |
2774 | dynindx = elf_section_data (bfinfdpic_got_section (info) | |
2775 | ->output_section)->dynindx; | |
2776 | addend = bfinfdpic_got_section (info)->output_offset | |
2777 | + bfinfdpic_got_initial_offset (info) | |
2778 | + picrel->fd_entry; | |
2779 | } | |
6a9adeca | 2780 | |
8ca9c7eb L |
2781 | /* If there is room for dynamic symbol resolution, emit |
2782 | the dynamic relocation. However, if we're linking an | |
2783 | executable at a fixed location, we won't have emitted a | |
2784 | dynamic symbol entry for the got section, so idx will | |
2785 | be zero, which means we can and should compute the | |
2786 | address of the private descriptor ourselves. */ | |
2787 | if (bfd_link_pde (info) | |
2788 | && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h))) | |
2789 | { | |
2790 | bfd_vma offset; | |
2791 | ||
2792 | addend += bfinfdpic_got_section (info)->output_section->vma; | |
2793 | if ((bfd_section_flags (input_section->output_section) | |
2794 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2795 | { | |
2796 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2797 | input_section | |
2798 | ->output_section)) | |
2799 | { | |
2800 | info->callbacks->warning | |
2801 | (info, | |
2802 | _("cannot emit fixups in read-only section"), | |
2803 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2804 | return false; |
8ca9c7eb L |
2805 | } |
2806 | ||
2807 | offset = _bfd_elf_section_offset | |
2808 | (output_bfd, info, | |
2809 | input_section, rel->r_offset); | |
2810 | ||
2811 | if (offset != (bfd_vma)-1) | |
2812 | _bfinfdpic_add_rofixup (output_bfd, | |
2813 | bfinfdpic_gotfixup_section | |
2814 | (info), | |
2815 | offset + input_section | |
2816 | ->output_section->vma | |
2817 | + input_section->output_offset, | |
2818 | picrel); | |
2819 | } | |
2820 | } | |
2821 | else if ((bfd_section_flags (input_section->output_section) | |
2822 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2823 | { | |
2824 | bfd_vma offset; | |
2825 | ||
2826 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2827 | input_section | |
2828 | ->output_section)) | |
2829 | { | |
2830 | info->callbacks->warning | |
2831 | (info, | |
2832 | _("cannot emit dynamic relocations in read-only section"), | |
2833 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2834 | return false; |
8ca9c7eb L |
2835 | } |
2836 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2837 | input_section, rel->r_offset); | |
2838 | ||
2839 | if (offset != (bfd_vma)-1) | |
2840 | _bfinfdpic_add_dyn_reloc (output_bfd, | |
2841 | bfinfdpic_gotrel_section (info), | |
6a9adeca BS |
2842 | offset + input_section |
2843 | ->output_section->vma | |
2844 | + input_section->output_offset, | |
8ca9c7eb L |
2845 | r_type, |
2846 | dynindx, addend, picrel); | |
2847 | } | |
2848 | else | |
2849 | addend += bfinfdpic_got_section (info)->output_section->vma; | |
2850 | } | |
c96a8570 | 2851 | |
8ca9c7eb L |
2852 | /* We want the addend in-place because dynamic |
2853 | relocations are REL. Setting relocation to it should | |
2854 | arrange for it to be installed. */ | |
2855 | relocation = addend - rel->r_addend; | |
c96a8570 BS |
2856 | } |
2857 | check_segment[0] = check_segment[1] = got_segment; | |
2858 | break; | |
2859 | ||
cb88ce9f | 2860 | case R_BFIN_BYTE4_DATA: |
c96a8570 | 2861 | if (! IS_FDPIC (output_bfd)) |
7a84e3da | 2862 | { |
c96a8570 BS |
2863 | check_segment[0] = check_segment[1] = -1; |
2864 | break; | |
7a84e3da | 2865 | } |
c96a8570 BS |
2866 | /* Fall through. */ |
2867 | case R_BFIN_FUNCDESC_VALUE: | |
2868 | { | |
2869 | int dynindx; | |
2870 | bfd_vma addend = rel->r_addend; | |
2871 | bfd_vma offset; | |
2872 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2873 | input_section, rel->r_offset); | |
7a84e3da | 2874 | |
c96a8570 BS |
2875 | /* If the symbol is dynamic but binds locally, use |
2876 | section+offset. */ | |
2877 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h)) | |
48d502e1 | 2878 | { |
c96a8570 BS |
2879 | if (addend && r_type == R_BFIN_FUNCDESC_VALUE) |
2880 | { | |
2881 | info->callbacks->warning | |
2882 | (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), | |
2883 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2884 | return false; |
c96a8570 BS |
2885 | } |
2886 | dynindx = h->dynindx; | |
48d502e1 | 2887 | } |
c96a8570 | 2888 | else |
48d502e1 | 2889 | { |
c96a8570 BS |
2890 | if (h) |
2891 | addend += h->root.u.def.value; | |
2892 | else | |
2893 | addend += sym->st_value; | |
2894 | if (osec) | |
2895 | addend += osec->output_offset; | |
2896 | if (osec && osec->output_section | |
2897 | && ! bfd_is_abs_section (osec->output_section) | |
2898 | && ! bfd_is_und_section (osec->output_section)) | |
2899 | dynindx = elf_section_data (osec->output_section)->dynindx; | |
2900 | else | |
2901 | dynindx = 0; | |
2902 | } | |
48d502e1 | 2903 | |
c96a8570 BS |
2904 | /* If we're linking an executable at a fixed address, we |
2905 | can omit the dynamic relocation as long as the symbol | |
2906 | is defined in the current link unit (which is implied | |
2907 | by its output section not being NULL). */ | |
3cbc1e5e | 2908 | if (bfd_link_pde (info) |
c96a8570 BS |
2909 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
2910 | { | |
2911 | if (osec) | |
2912 | addend += osec->output_section->vma; | |
2913 | if (IS_FDPIC (input_bfd) | |
fd361982 | 2914 | && (bfd_section_flags (input_section->output_section) |
c96a8570 | 2915 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
48d502e1 | 2916 | { |
c96a8570 BS |
2917 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
2918 | input_section | |
2919 | ->output_section)) | |
48d502e1 | 2920 | { |
c96a8570 BS |
2921 | info->callbacks->warning |
2922 | (info, | |
2923 | _("cannot emit fixups in read-only section"), | |
2924 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2925 | return false; |
c96a8570 BS |
2926 | } |
2927 | if (!h || h->root.type != bfd_link_hash_undefweak) | |
2928 | { | |
6a9adeca | 2929 | if (offset != (bfd_vma)-1) |
c96a8570 | 2930 | { |
6a9adeca BS |
2931 | _bfinfdpic_add_rofixup (output_bfd, |
2932 | bfinfdpic_gotfixup_section | |
2933 | (info), | |
2934 | offset + input_section | |
2935 | ->output_section->vma | |
2936 | + input_section->output_offset, | |
2937 | picrel); | |
2938 | ||
2939 | if (r_type == R_BFIN_FUNCDESC_VALUE) | |
c96a8570 BS |
2940 | _bfinfdpic_add_rofixup |
2941 | (output_bfd, | |
2942 | bfinfdpic_gotfixup_section (info), | |
2943 | offset + input_section->output_section->vma | |
2944 | + input_section->output_offset + 4, picrel); | |
2945 | } | |
48d502e1 BS |
2946 | } |
2947 | } | |
48d502e1 BS |
2948 | } |
2949 | else | |
2950 | { | |
fd361982 | 2951 | if ((bfd_section_flags (input_section->output_section) |
c96a8570 | 2952 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
48d502e1 | 2953 | { |
c96a8570 BS |
2954 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
2955 | input_section | |
2956 | ->output_section)) | |
48d502e1 | 2957 | { |
c96a8570 BS |
2958 | info->callbacks->warning |
2959 | (info, | |
2960 | _("cannot emit dynamic relocations in read-only section"), | |
2961 | name, input_bfd, input_section, rel->r_offset); | |
0a1b45a2 | 2962 | return false; |
48d502e1 | 2963 | } |
6a9adeca BS |
2964 | |
2965 | if (offset != (bfd_vma)-1) | |
c96a8570 BS |
2966 | _bfinfdpic_add_dyn_reloc (output_bfd, |
2967 | bfinfdpic_gotrel_section (info), | |
2968 | offset | |
6a9adeca | 2969 | + input_section->output_section->vma |
c96a8570 BS |
2970 | + input_section->output_offset, |
2971 | r_type, dynindx, addend, picrel); | |
48d502e1 | 2972 | } |
c96a8570 BS |
2973 | else if (osec) |
2974 | addend += osec->output_section->vma; | |
2975 | /* We want the addend in-place because dynamic | |
2976 | relocations are REL. Setting relocation to it | |
2977 | should arrange for it to be installed. */ | |
2978 | relocation = addend - rel->r_addend; | |
2979 | } | |
2980 | ||
6a9adeca | 2981 | if (r_type == R_BFIN_FUNCDESC_VALUE) |
c96a8570 BS |
2982 | { |
2983 | /* If we've omitted the dynamic relocation, just emit | |
2984 | the fixed addresses of the symbol and of the local | |
2985 | GOT base offset. */ | |
3cbc1e5e | 2986 | if (bfd_link_pde (info) |
c96a8570 BS |
2987 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
2988 | bfd_put_32 (output_bfd, | |
2989 | bfinfdpic_got_section (info)->output_section->vma | |
2990 | + bfinfdpic_got_section (info)->output_offset | |
2991 | + bfinfdpic_got_initial_offset (info), | |
2992 | contents + rel->r_offset + 4); | |
2993 | else | |
2994 | /* A function descriptor used for lazy or local | |
2995 | resolving is initialized such that its high word | |
2996 | contains the output section index in which the | |
2997 | PLT entries are located, and the low word | |
2998 | contains the offset of the lazy PLT entry entry | |
2999 | point into that section. */ | |
3000 | bfd_put_32 (output_bfd, | |
3001 | h && ! BFINFDPIC_SYM_LOCAL (info, h) | |
3002 | ? 0 | |
3003 | : _bfinfdpic_osec_to_segment (output_bfd, | |
3004 | sec | |
3005 | ->output_section), | |
3006 | contents + rel->r_offset + 4); | |
48d502e1 | 3007 | } |
c96a8570 BS |
3008 | } |
3009 | check_segment[0] = check_segment[1] = got_segment; | |
3010 | break; | |
3011 | ||
3012 | default: | |
3013 | check_segment[0] = isec_segment; | |
3014 | check_segment[1] = sec | |
3015 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
3016 | : (unsigned)-1; | |
3017 | break; | |
3018 | } | |
3019 | ||
3020 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) | |
3021 | { | |
3022 | #if 1 /* If you take this out, remove the #error from fdpic-static-6.d | |
3023 | in the ld testsuite. */ | |
3024 | /* This helps catch problems in GCC while we can't do more | |
3025 | than static linking. The idea is to test whether the | |
3026 | input file basename is crt0.o only once. */ | |
3027 | if (silence_segment_error == 1) | |
3028 | silence_segment_error = | |
765cf5f6 AM |
3029 | (strlen (bfd_get_filename (input_bfd)) == 6 |
3030 | && filename_cmp (bfd_get_filename (input_bfd), "crt0.o") == 0) | |
3031 | || (strlen (bfd_get_filename (input_bfd)) > 6 | |
3032 | && filename_cmp (bfd_get_filename (input_bfd) | |
3033 | + strlen (bfd_get_filename (input_bfd)) - 7, | |
c96a8570 BS |
3034 | "/crt0.o") == 0) |
3035 | ? -1 : 0; | |
3036 | #endif | |
3037 | if (!silence_segment_error | |
3038 | /* We don't want duplicate errors for undefined | |
3039 | symbols. */ | |
3040 | && !(picrel && picrel->symndx == -1 | |
3041 | && picrel->d.h->root.type == bfd_link_hash_undefined)) | |
3042 | info->callbacks->warning | |
3043 | (info, | |
0e1862bb | 3044 | bfd_link_pic (info) |
c96a8570 BS |
3045 | ? _("relocations between different segments are not supported") |
3046 | : _("warning: relocation references a different segment"), | |
3047 | name, input_bfd, input_section, rel->r_offset); | |
0e1862bb | 3048 | if (!silence_segment_error && bfd_link_pic (info)) |
0a1b45a2 | 3049 | return false; |
c96a8570 BS |
3050 | elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC; |
3051 | } | |
3052 | ||
3053 | switch (r_type) | |
3054 | { | |
3055 | case R_BFIN_GOTOFFHI: | |
3056 | /* We need the addend to be applied before we shift the | |
3057 | value right. */ | |
3058 | relocation += rel->r_addend; | |
3059 | /* Fall through. */ | |
3060 | case R_BFIN_GOTHI: | |
3061 | case R_BFIN_FUNCDESC_GOTHI: | |
3062 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3063 | relocation >>= 16; | |
3064 | /* Fall through. */ | |
48d502e1 | 3065 | |
c96a8570 BS |
3066 | case R_BFIN_GOTLO: |
3067 | case R_BFIN_FUNCDESC_GOTLO: | |
3068 | case R_BFIN_GOTOFFLO: | |
3069 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3070 | relocation &= 0xffff; | |
3071 | break; | |
48d502e1 | 3072 | |
48d502e1 | 3073 | default: |
48d502e1 BS |
3074 | break; |
3075 | } | |
3076 | ||
c96a8570 | 3077 | switch (r_type) |
48d502e1 | 3078 | { |
cb88ce9f BS |
3079 | case R_BFIN_PCREL24: |
3080 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
3081 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
3082 | break; | |
3083 | /* Fall through. */ | |
3084 | ||
3085 | /* When referencing a GOT entry, a function descriptor or a | |
3086 | PLT, we don't want the addend to apply to the reference, | |
3087 | but rather to the referenced symbol. The actual entry | |
3088 | will have already been created taking the addend into | |
3089 | account, so cancel it out here. */ | |
3090 | case R_BFIN_GOT17M4: | |
3091 | case R_BFIN_GOTHI: | |
3092 | case R_BFIN_GOTLO: | |
3093 | case R_BFIN_FUNCDESC_GOT17M4: | |
3094 | case R_BFIN_FUNCDESC_GOTHI: | |
3095 | case R_BFIN_FUNCDESC_GOTLO: | |
3096 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
3097 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3098 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3099 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4 | |
3100 | here, since we do want to apply the addend to the others. | |
3101 | Note that we've applied the addend to GOTOFFHI before we | |
3102 | shifted it right. */ | |
3103 | case R_BFIN_GOTOFFHI: | |
3104 | relocation -= rel->r_addend; | |
3105 | break; | |
3106 | ||
3107 | default: | |
3108 | break; | |
48d502e1 BS |
3109 | } |
3110 | ||
c96a8570 BS |
3111 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, |
3112 | contents, rel->r_offset, | |
3113 | relocation, rel->r_addend); | |
3114 | ||
48d502e1 BS |
3115 | if (r != bfd_reloc_ok) |
3116 | { | |
c96a8570 | 3117 | const char * msg = (const char *) NULL; |
48d502e1 | 3118 | |
c96a8570 | 3119 | switch (r) |
48d502e1 | 3120 | { |
c96a8570 | 3121 | case bfd_reloc_overflow: |
1a72702b | 3122 | (*info->callbacks->reloc_overflow) |
c96a8570 BS |
3123 | (info, (h ? &h->root : NULL), name, howto->name, |
3124 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
3125 | break; | |
0f64bb02 | 3126 | |
c96a8570 | 3127 | case bfd_reloc_undefined: |
1a72702b | 3128 | (*info->callbacks->undefined_symbol) |
0a1b45a2 | 3129 | (info, name, input_bfd, input_section, rel->r_offset, true); |
c96a8570 BS |
3130 | break; |
3131 | ||
3132 | case bfd_reloc_outofrange: | |
3133 | msg = _("internal error: out of range error"); | |
3134 | break; | |
3135 | ||
3136 | case bfd_reloc_notsupported: | |
3137 | msg = _("internal error: unsupported relocation error"); | |
3138 | break; | |
3139 | ||
3140 | case bfd_reloc_dangerous: | |
3141 | msg = _("internal error: dangerous relocation"); | |
3142 | break; | |
3143 | ||
3144 | default: | |
3145 | msg = _("internal error: unknown error"); | |
3146 | break; | |
48d502e1 | 3147 | } |
c96a8570 BS |
3148 | |
3149 | if (msg) | |
1a72702b AM |
3150 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
3151 | input_section, rel->r_offset); | |
48d502e1 BS |
3152 | } |
3153 | } | |
3154 | ||
0a1b45a2 | 3155 | return true; |
48d502e1 BS |
3156 | } |
3157 | ||
48d502e1 BS |
3158 | /* We need dynamic symbols for every section, since segments can |
3159 | relocate independently. */ | |
0a1b45a2 | 3160 | static bool |
48d502e1 | 3161 | _bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
51408ec2 AM |
3162 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3163 | asection *p) | |
48d502e1 BS |
3164 | { |
3165 | switch (elf_section_data (p)->this_hdr.sh_type) | |
3166 | { | |
3167 | case SHT_PROGBITS: | |
3168 | case SHT_NOBITS: | |
3169 | /* If sh_type is yet undecided, assume it could be | |
3170 | SHT_PROGBITS/SHT_NOBITS. */ | |
3171 | case SHT_NULL: | |
0a1b45a2 | 3172 | return false; |
48d502e1 BS |
3173 | |
3174 | /* There shouldn't be section relative relocations | |
3175 | against any other section. */ | |
3176 | default: | |
0a1b45a2 | 3177 | return true; |
48d502e1 BS |
3178 | } |
3179 | } | |
3180 | ||
3181 | /* Create a .got section, as well as its additional info field. This | |
3182 | is almost entirely copied from | |
3183 | elflink.c:_bfd_elf_create_got_section(). */ | |
3184 | ||
0a1b45a2 | 3185 | static bool |
48d502e1 BS |
3186 | _bfin_create_got_section (bfd *abfd, struct bfd_link_info *info) |
3187 | { | |
3188 | flagword flags, pltflags; | |
3189 | asection *s; | |
3190 | struct elf_link_hash_entry *h; | |
48d502e1 BS |
3191 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
3192 | int ptralign; | |
48d502e1 BS |
3193 | |
3194 | /* This function may be called more than once. */ | |
ce558b89 | 3195 | s = elf_hash_table (info)->sgot; |
3d4d4302 | 3196 | if (s != NULL) |
0a1b45a2 | 3197 | return true; |
48d502e1 BS |
3198 | |
3199 | /* Machine specific: although pointers are 32-bits wide, we want the | |
3200 | GOT to be aligned to a 64-bit boundary, such that function | |
3201 | descriptors in it can be accessed with 64-bit loads and | |
3202 | stores. */ | |
3203 | ptralign = 3; | |
3204 | ||
3205 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3206 | | SEC_LINKER_CREATED); | |
3207 | pltflags = flags; | |
3208 | ||
3d4d4302 | 3209 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
ce558b89 | 3210 | elf_hash_table (info)->sgot = s; |
48d502e1 | 3211 | if (s == NULL |
fd361982 | 3212 | || !bfd_set_section_alignment (s, ptralign)) |
0a1b45a2 | 3213 | return false; |
48d502e1 | 3214 | |
48d502e1 BS |
3215 | if (bed->want_got_sym) |
3216 | { | |
3217 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
3218 | (or .got.plt) section. We don't do this in the linker script | |
3219 | because we don't want to define the symbol if we are not creating | |
3220 | a global offset table. */ | |
5592d7ec | 3221 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_"); |
48d502e1 BS |
3222 | elf_hash_table (info)->hgot = h; |
3223 | if (h == NULL) | |
0a1b45a2 | 3224 | return false; |
48d502e1 BS |
3225 | |
3226 | /* Machine-specific: we want the symbol for executables as | |
3227 | well. */ | |
3228 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
0a1b45a2 | 3229 | return false; |
48d502e1 BS |
3230 | } |
3231 | ||
3232 | /* The first bit of the global offset table is the header. */ | |
3233 | s->size += bed->got_header_size; | |
3234 | ||
3235 | /* This is the machine-specific part. Create and initialize section | |
3236 | data for the got. */ | |
3237 | if (IS_FDPIC (abfd)) | |
3238 | { | |
48d502e1 BS |
3239 | bfinfdpic_relocs_info (info) = htab_try_create (1, |
3240 | bfinfdpic_relocs_info_hash, | |
3241 | bfinfdpic_relocs_info_eq, | |
3242 | (htab_del) NULL); | |
3243 | if (! bfinfdpic_relocs_info (info)) | |
0a1b45a2 | 3244 | return false; |
48d502e1 | 3245 | |
3d4d4302 AM |
3246 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", |
3247 | (flags | SEC_READONLY)); | |
48d502e1 | 3248 | if (s == NULL |
fd361982 | 3249 | || !bfd_set_section_alignment (s, 2)) |
0a1b45a2 | 3250 | return false; |
48d502e1 BS |
3251 | |
3252 | bfinfdpic_gotrel_section (info) = s; | |
3253 | ||
3254 | /* Machine-specific. */ | |
3d4d4302 AM |
3255 | s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", |
3256 | (flags | SEC_READONLY)); | |
48d502e1 | 3257 | if (s == NULL |
fd361982 | 3258 | || !bfd_set_section_alignment (s, 2)) |
0a1b45a2 | 3259 | return false; |
48d502e1 BS |
3260 | |
3261 | bfinfdpic_gotfixup_section (info) = s; | |
48d502e1 BS |
3262 | } |
3263 | ||
48d502e1 BS |
3264 | pltflags |= SEC_CODE; |
3265 | if (bed->plt_not_loaded) | |
3266 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); | |
3267 | if (bed->plt_readonly) | |
3268 | pltflags |= SEC_READONLY; | |
3269 | ||
3d4d4302 | 3270 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
48d502e1 | 3271 | if (s == NULL |
fd361982 | 3272 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
0a1b45a2 | 3273 | return false; |
48d502e1 BS |
3274 | /* Blackfin-specific: remember it. */ |
3275 | bfinfdpic_plt_section (info) = s; | |
3276 | ||
3277 | if (bed->want_plt_sym) | |
3278 | { | |
3279 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3280 | .plt section. */ | |
48d502e1 BS |
3281 | struct bfd_link_hash_entry *bh = NULL; |
3282 | ||
3283 | if (! (_bfd_generic_link_add_one_symbol | |
5592d7ec | 3284 | (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL, |
0a1b45a2 AM |
3285 | false, get_elf_backend_data (abfd)->collect, &bh))) |
3286 | return false; | |
48d502e1 BS |
3287 | h = (struct elf_link_hash_entry *) bh; |
3288 | h->def_regular = 1; | |
3289 | h->type = STT_OBJECT; | |
3290 | ||
0e1862bb | 3291 | if (! bfd_link_executable (info) |
48d502e1 | 3292 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
0a1b45a2 | 3293 | return false; |
48d502e1 BS |
3294 | } |
3295 | ||
3296 | /* Blackfin-specific: we want rel relocations for the plt. */ | |
3d4d4302 AM |
3297 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", |
3298 | flags | SEC_READONLY); | |
48d502e1 | 3299 | if (s == NULL |
fd361982 | 3300 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
0a1b45a2 | 3301 | return false; |
48d502e1 BS |
3302 | /* Blackfin-specific: remember it. */ |
3303 | bfinfdpic_pltrel_section (info) = s; | |
3304 | ||
0a1b45a2 | 3305 | return true; |
6a9adeca BS |
3306 | } |
3307 | ||
3308 | /* Make sure the got and plt sections exist, and that our pointers in | |
3309 | the link hash table point to them. */ | |
3310 | ||
0a1b45a2 | 3311 | static bool |
6a9adeca BS |
3312 | elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
3313 | { | |
3314 | /* This is mostly copied from | |
3315 | elflink.c:_bfd_elf_create_dynamic_sections(). */ | |
3316 | flagword flags; | |
3317 | asection *s; | |
3318 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3319 | ||
3320 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3321 | | SEC_LINKER_CREATED); | |
3322 | ||
3323 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3324 | .rel[a].bss sections. */ | |
3325 | ||
48d502e1 BS |
3326 | /* Blackfin-specific: we want to create the GOT in the Blackfin way. */ |
3327 | if (! _bfin_create_got_section (abfd, info)) | |
0a1b45a2 | 3328 | return false; |
48d502e1 BS |
3329 | |
3330 | /* Blackfin-specific: make sure we created everything we wanted. */ | |
3331 | BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info) | |
3332 | /* && bfinfdpic_gotfixup_section (info) */ | |
3333 | && bfinfdpic_plt_section (info) | |
3334 | && bfinfdpic_pltrel_section (info)); | |
3335 | ||
3336 | if (bed->want_dynbss) | |
3337 | { | |
3338 | /* The .dynbss section is a place to put symbols which are defined | |
3339 | by dynamic objects, are referenced by regular objects, and are | |
3340 | not functions. We must allocate space for them in the process | |
3341 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3342 | initialize them at run time. The linker script puts the .dynbss | |
3343 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
3344 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
3345 | SEC_ALLOC | SEC_LINKER_CREATED); | |
117ed4f8 | 3346 | if (s == NULL) |
0a1b45a2 | 3347 | return false; |
48d502e1 BS |
3348 | |
3349 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3d4d4302 AM |
3350 | normally needed. We need to create it here, though, so that the |
3351 | linker will map it to an output section. We can't just create it | |
3352 | only if we need it, because we will not know whether we need it | |
3353 | until we have seen all the input files, and the first time the | |
3354 | main linker code calls BFD after examining all the input files | |
3355 | (size_dynamic_sections) the input sections have already been | |
3356 | mapped to the output sections. If the section turns out not to | |
3357 | be needed, we can discard it later. We will never need this | |
3358 | section when generating a shared object, since they do not use | |
3359 | copy relocs. */ | |
0e1862bb | 3360 | if (! bfd_link_pic (info)) |
48d502e1 | 3361 | { |
3d4d4302 AM |
3362 | s = bfd_make_section_anyway_with_flags (abfd, |
3363 | ".rela.bss", | |
3364 | flags | SEC_READONLY); | |
48d502e1 | 3365 | if (s == NULL |
fd361982 | 3366 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
0a1b45a2 | 3367 | return false; |
48d502e1 BS |
3368 | } |
3369 | } | |
3370 | ||
0a1b45a2 | 3371 | return true; |
48d502e1 BS |
3372 | } |
3373 | ||
48d502e1 BS |
3374 | /* Compute the total GOT size required by each symbol in each range. |
3375 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3376 | the symbol, an entry pointing to its function descriptor, and a | |
3377 | private function descriptors taking two words. */ | |
3378 | ||
6a9adeca BS |
3379 | static void |
3380 | _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info *entry, | |
3381 | struct _bfinfdpic_dynamic_got_info *dinfo) | |
48d502e1 | 3382 | { |
48d502e1 BS |
3383 | /* Allocate space for a GOT entry pointing to the symbol. */ |
3384 | if (entry->got17m4) | |
3385 | dinfo->got17m4 += 4; | |
3386 | else if (entry->gothilo) | |
3387 | dinfo->gothilo += 4; | |
3388 | else | |
3389 | entry->relocs32--; | |
3390 | entry->relocs32++; | |
3391 | ||
3392 | /* Allocate space for a GOT entry pointing to the function | |
3393 | descriptor. */ | |
3394 | if (entry->fdgot17m4) | |
3395 | dinfo->got17m4 += 4; | |
3396 | else if (entry->fdgothilo) | |
3397 | dinfo->gothilo += 4; | |
3398 | else | |
3399 | entry->relocsfd--; | |
3400 | entry->relocsfd++; | |
3401 | ||
3402 | /* Decide whether we need a PLT entry, a function descriptor in the | |
3403 | GOT, and a lazy PLT entry for this symbol. */ | |
3404 | entry->plt = entry->call | |
3405 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3406 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3407 | entry->privfd = entry->plt | |
3408 | || entry->fdgoff17m4 || entry->fdgoffhilo | |
3409 | || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo) | |
3410 | && (entry->symndx != -1 | |
3411 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); | |
3412 | entry->lazyplt = entry->privfd | |
3413 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3414 | && ! (dinfo->info->flags & DF_BIND_NOW) | |
3415 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3416 | ||
3417 | /* Allocate space for a function descriptor. */ | |
3418 | if (entry->fdgoff17m4) | |
3419 | dinfo->fd17m4 += 8; | |
3420 | else if (entry->privfd && entry->plt) | |
3421 | dinfo->fdplt += 8; | |
3422 | else if (entry->privfd) | |
3423 | dinfo->fdhilo += 8; | |
3424 | else | |
3425 | entry->relocsfdv--; | |
3426 | entry->relocsfdv++; | |
3427 | ||
3428 | if (entry->lazyplt) | |
3429 | dinfo->lzplt += LZPLT_NORMAL_SIZE; | |
6a9adeca BS |
3430 | } |
3431 | ||
3432 | /* Compute the number of dynamic relocations and fixups that a symbol | |
3433 | requires, and add (or subtract) from the grand and per-symbol | |
3434 | totals. */ | |
3435 | ||
3436 | static void | |
3437 | _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info *entry, | |
3438 | struct _bfinfdpic_dynamic_got_info *dinfo, | |
0a1b45a2 | 3439 | bool subtract) |
6a9adeca BS |
3440 | { |
3441 | bfd_vma relocs = 0, fixups = 0; | |
48d502e1 | 3442 | |
3cbc1e5e | 3443 | if (!bfd_link_pde (dinfo->info)) |
48d502e1 BS |
3444 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv; |
3445 | else | |
3446 | { | |
3447 | if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) | |
3448 | { | |
3449 | if (entry->symndx != -1 | |
3450 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3451 | fixups += entry->relocs32 + 2 * entry->relocsfdv; | |
3452 | } | |
3453 | else | |
3454 | relocs += entry->relocs32 + entry->relocsfdv; | |
3455 | ||
3456 | if (entry->symndx != -1 | |
3457 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) | |
3458 | { | |
3459 | if (entry->symndx != -1 | |
3460 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3461 | fixups += entry->relocsfd; | |
3462 | } | |
3463 | else | |
3464 | relocs += entry->relocsfd; | |
3465 | } | |
3466 | ||
6a9adeca BS |
3467 | if (subtract) |
3468 | { | |
3469 | relocs = - relocs; | |
3470 | fixups = - fixups; | |
3471 | } | |
3472 | ||
48d502e1 BS |
3473 | entry->dynrelocs += relocs; |
3474 | entry->fixups += fixups; | |
3475 | dinfo->relocs += relocs; | |
3476 | dinfo->fixups += fixups; | |
6a9adeca BS |
3477 | } |
3478 | ||
3479 | /* Compute the total GOT and PLT size required by each symbol in each range. * | |
3480 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3481 | the symbol, an entry pointing to its function descriptor, and a | |
3482 | private function descriptors taking two words. */ | |
3483 | ||
3484 | static int | |
3485 | _bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_) | |
3486 | { | |
3487 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3488 | struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_; | |
3489 | ||
3490 | _bfinfdpic_count_nontls_entries (entry, dinfo); | |
3491 | ||
0a1b45a2 | 3492 | _bfinfdpic_count_relocs_fixups (entry, dinfo, false); |
48d502e1 BS |
3493 | |
3494 | return 1; | |
3495 | } | |
3496 | ||
3497 | /* This structure is used to assign offsets to got entries, function | |
3498 | descriptors, plt entries and lazy plt entries. */ | |
3499 | ||
3500 | struct _bfinfdpic_dynamic_got_plt_info | |
3501 | { | |
3502 | /* Summary information collected with _bfinfdpic_count_got_plt_entries. */ | |
3503 | struct _bfinfdpic_dynamic_got_info g; | |
3504 | ||
3505 | /* For each addressable range, we record a MAX (positive) and MIN | |
3506 | (negative) value. CUR is used to assign got entries, and it's | |
3507 | incremented from an initial positive value to MAX, then from MIN | |
3508 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to | |
3509 | assign function descriptors, and it's decreased from an initial | |
3510 | non-positive value to MIN, then from MAX down to CUR (unless CUR | |
3511 | wraps around first). All of MIN, MAX, CUR and FDCUR always point | |
3512 | to even words. ODD, if non-zero, indicates an odd word to be | |
3513 | used for the next got entry, otherwise CUR is used and | |
3514 | incremented by a pair of words, wrapping around when it reaches | |
3515 | MAX. FDCUR is decremented (and wrapped) before the next function | |
3516 | descriptor is chosen. FDPLT indicates the number of remaining | |
3517 | slots that can be used for function descriptors used only by PLT | |
3518 | entries. */ | |
3519 | struct _bfinfdpic_dynamic_got_alloc_data | |
3520 | { | |
3521 | bfd_signed_vma max, cur, odd, fdcur, min; | |
3522 | bfd_vma fdplt; | |
3523 | } got17m4, gothilo; | |
3524 | }; | |
3525 | ||
3526 | /* Determine the positive and negative ranges to be used by each | |
3527 | offset range in the GOT. FDCUR and CUR, that must be aligned to a | |
3528 | double-word boundary, are the minimum (negative) and maximum | |
3529 | (positive) GOT offsets already used by previous ranges, except for | |
3530 | an ODD entry that may have been left behind. GOT and FD indicate | |
3531 | the size of GOT entries and function descriptors that must be | |
3532 | placed within the range from -WRAP to WRAP. If there's room left, | |
3533 | up to FDPLT bytes should be reserved for additional function | |
3534 | descriptors. */ | |
3535 | ||
3536 | inline static bfd_signed_vma | |
3537 | _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad, | |
3538 | bfd_signed_vma fdcur, | |
3539 | bfd_signed_vma odd, | |
3540 | bfd_signed_vma cur, | |
3541 | bfd_vma got, | |
3542 | bfd_vma fd, | |
3543 | bfd_vma fdplt, | |
3544 | bfd_vma wrap) | |
3545 | { | |
3546 | bfd_signed_vma wrapmin = -wrap; | |
3547 | ||
3548 | /* Start at the given initial points. */ | |
3549 | gad->fdcur = fdcur; | |
3550 | gad->cur = cur; | |
3551 | ||
3552 | /* If we had an incoming odd word and we have any got entries that | |
3553 | are going to use it, consume it, otherwise leave gad->odd at | |
3554 | zero. We might force gad->odd to zero and return the incoming | |
3555 | odd such that it is used by the next range, but then GOT entries | |
3556 | might appear to be out of order and we wouldn't be able to | |
3557 | shorten the GOT by one word if it turns out to end with an | |
3558 | unpaired GOT entry. */ | |
3559 | if (odd && got) | |
3560 | { | |
3561 | gad->odd = odd; | |
3562 | got -= 4; | |
3563 | odd = 0; | |
3564 | } | |
3565 | else | |
3566 | gad->odd = 0; | |
3567 | ||
3568 | /* If we're left with an unpaired GOT entry, compute its location | |
3569 | such that we can return it. Otherwise, if got doesn't require an | |
3570 | odd number of words here, either odd was already zero in the | |
3571 | block above, or it was set to zero because got was non-zero, or | |
3572 | got was already zero. In the latter case, we want the value of | |
3573 | odd to carry over to the return statement, so we don't want to | |
3574 | reset odd unless the condition below is true. */ | |
3575 | if (got & 4) | |
3576 | { | |
3577 | odd = cur + got; | |
3578 | got += 4; | |
3579 | } | |
3580 | ||
3581 | /* Compute the tentative boundaries of this range. */ | |
3582 | gad->max = cur + got; | |
3583 | gad->min = fdcur - fd; | |
3584 | gad->fdplt = 0; | |
3585 | ||
3586 | /* If function descriptors took too much space, wrap some of them | |
3587 | around. */ | |
3588 | if (gad->min < wrapmin) | |
3589 | { | |
3590 | gad->max += wrapmin - gad->min; | |
3591 | gad->min = wrapmin; | |
3592 | } | |
3593 | /* If there is space left and we have function descriptors | |
3594 | referenced in PLT entries that could take advantage of shorter | |
3595 | offsets, place them here. */ | |
3596 | else if (fdplt && gad->min > wrapmin) | |
3597 | { | |
3598 | bfd_vma fds; | |
3599 | if ((bfd_vma) (gad->min - wrapmin) < fdplt) | |
3600 | fds = gad->min - wrapmin; | |
3601 | else | |
3602 | fds = fdplt; | |
3603 | ||
3604 | fdplt -= fds; | |
3605 | gad->min -= fds; | |
3606 | gad->fdplt += fds; | |
3607 | } | |
3608 | ||
3609 | /* If GOT entries took too much space, wrap some of them around. | |
3610 | This may well cause gad->min to become lower than wrapmin. This | |
3611 | will cause a relocation overflow later on, so we don't have to | |
3612 | report it here . */ | |
3613 | if ((bfd_vma) gad->max > wrap) | |
3614 | { | |
3615 | gad->min -= gad->max - wrap; | |
3616 | gad->max = wrap; | |
3617 | } | |
3618 | /* If there is more space left, try to place some more function | |
3619 | descriptors for PLT entries. */ | |
3620 | else if (fdplt && (bfd_vma) gad->max < wrap) | |
3621 | { | |
3622 | bfd_vma fds; | |
3623 | if ((bfd_vma) (wrap - gad->max) < fdplt) | |
3624 | fds = wrap - gad->max; | |
3625 | else | |
3626 | fds = fdplt; | |
3627 | ||
3628 | fdplt -= fds; | |
3629 | gad->max += fds; | |
3630 | gad->fdplt += fds; | |
3631 | } | |
3632 | ||
3633 | /* If odd was initially computed as an offset past the wrap point, | |
3634 | wrap it around. */ | |
3635 | if (odd > gad->max) | |
3636 | odd = gad->min + odd - gad->max; | |
3637 | ||
3638 | /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed | |
3639 | before returning, so do it here too. This guarantees that, | |
3640 | should cur and fdcur meet at the wrap point, they'll both be | |
3641 | equal to min. */ | |
3642 | if (gad->cur == gad->max) | |
3643 | gad->cur = gad->min; | |
3644 | ||
3645 | return odd; | |
3646 | } | |
3647 | ||
3648 | /* Compute the location of the next GOT entry, given the allocation | |
3649 | data for a range. */ | |
3650 | ||
3651 | inline static bfd_signed_vma | |
3652 | _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3653 | { | |
3654 | bfd_signed_vma ret; | |
3655 | ||
3656 | if (gad->odd) | |
3657 | { | |
3658 | /* If there was an odd word left behind, use it. */ | |
3659 | ret = gad->odd; | |
3660 | gad->odd = 0; | |
3661 | } | |
3662 | else | |
3663 | { | |
3664 | /* Otherwise, use the word pointed to by cur, reserve the next | |
3665 | as an odd word, and skip to the next pair of words, possibly | |
3666 | wrapping around. */ | |
3667 | ret = gad->cur; | |
3668 | gad->odd = gad->cur + 4; | |
3669 | gad->cur += 8; | |
3670 | if (gad->cur == gad->max) | |
3671 | gad->cur = gad->min; | |
3672 | } | |
3673 | ||
3674 | return ret; | |
3675 | } | |
3676 | ||
3677 | /* Compute the location of the next function descriptor entry in the | |
3678 | GOT, given the allocation data for a range. */ | |
3679 | ||
3680 | inline static bfd_signed_vma | |
3681 | _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3682 | { | |
3683 | /* If we're at the bottom, wrap around, and only then allocate the | |
3684 | next pair of words. */ | |
3685 | if (gad->fdcur == gad->min) | |
3686 | gad->fdcur = gad->max; | |
3687 | return gad->fdcur -= 8; | |
3688 | } | |
3689 | ||
3690 | /* Assign GOT offsets for every GOT entry and function descriptor. | |
3691 | Doing everything in a single pass is tricky. */ | |
3692 | ||
3693 | static int | |
3694 | _bfinfdpic_assign_got_entries (void **entryp, void *info_) | |
3695 | { | |
3696 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3697 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3698 | ||
3699 | if (entry->got17m4) | |
3700 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3701 | else if (entry->gothilo) | |
3702 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3703 | ||
3704 | if (entry->fdgot17m4) | |
3705 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3706 | else if (entry->fdgothilo) | |
3707 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3708 | ||
3709 | if (entry->fdgoff17m4) | |
3710 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3711 | else if (entry->plt && dinfo->got17m4.fdplt) | |
3712 | { | |
3713 | dinfo->got17m4.fdplt -= 8; | |
3714 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3715 | } | |
3716 | else if (entry->plt) | |
3717 | { | |
3718 | dinfo->gothilo.fdplt -= 8; | |
3719 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3720 | } | |
3721 | else if (entry->privfd) | |
3722 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3723 | ||
3724 | return 1; | |
3725 | } | |
3726 | ||
3727 | /* Assign GOT offsets to private function descriptors used by PLT | |
3728 | entries (or referenced by 32-bit offsets), as well as PLT entries | |
3729 | and lazy PLT entries. */ | |
3730 | ||
3731 | static int | |
3732 | _bfinfdpic_assign_plt_entries (void **entryp, void *info_) | |
3733 | { | |
3734 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3735 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3736 | ||
3737 | /* If this symbol requires a local function descriptor, allocate | |
3738 | one. */ | |
3739 | if (entry->privfd && entry->fd_entry == 0) | |
3740 | { | |
3741 | if (dinfo->got17m4.fdplt) | |
3742 | { | |
3743 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3744 | dinfo->got17m4.fdplt -= 8; | |
3745 | } | |
3746 | else | |
3747 | { | |
3748 | BFD_ASSERT (dinfo->gothilo.fdplt); | |
3749 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3750 | dinfo->gothilo.fdplt -= 8; | |
3751 | } | |
3752 | } | |
3753 | ||
3754 | if (entry->plt) | |
3755 | { | |
3756 | int size; | |
3757 | ||
3758 | /* We use the section's raw size to mark the location of the | |
3759 | next PLT entry. */ | |
3760 | entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size; | |
3761 | ||
3762 | /* Figure out the length of this PLT entry based on the | |
3763 | addressing mode we need to reach the function descriptor. */ | |
3764 | BFD_ASSERT (entry->fd_entry); | |
3765 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
3766 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
3767 | size = 10; | |
3768 | else | |
3769 | size = 16; | |
3770 | ||
3771 | bfinfdpic_plt_section (dinfo->g.info)->size += size; | |
3772 | } | |
3773 | ||
3774 | if (entry->lazyplt) | |
3775 | { | |
3776 | entry->lzplt_entry = dinfo->g.lzplt; | |
3777 | dinfo->g.lzplt += LZPLT_NORMAL_SIZE; | |
3778 | /* If this entry is the one that gets the resolver stub, account | |
3779 | for the additional instruction. */ | |
3780 | if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE | |
3781 | == BFINFDPIC_LZPLT_RESOLV_LOC) | |
3782 | dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA; | |
3783 | } | |
3784 | ||
3785 | return 1; | |
3786 | } | |
3787 | ||
6a9adeca BS |
3788 | /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and |
3789 | _bfinfdpic_assign_plt_entries. */ | |
3790 | ||
3791 | static int | |
3792 | _bfinfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) | |
3793 | { | |
3794 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3795 | ||
3796 | entry->got_entry = 0; | |
3797 | entry->fdgot_entry = 0; | |
3798 | entry->fd_entry = 0; | |
3799 | entry->plt_entry = (bfd_vma)-1; | |
3800 | entry->lzplt_entry = (bfd_vma)-1; | |
3801 | ||
3802 | return 1; | |
3803 | } | |
3804 | ||
48d502e1 BS |
3805 | /* Follow indirect and warning hash entries so that each got entry |
3806 | points to the final symbol definition. P must point to a pointer | |
3807 | to the hash table we're traversing. Since this traversal may | |
3808 | modify the hash table, we set this pointer to NULL to indicate | |
3809 | we've made a potentially-destructive change to the hash table, so | |
3810 | the traversal must be restarted. */ | |
3811 | static int | |
3812 | _bfinfdpic_resolve_final_relocs_info (void **entryp, void *p) | |
3813 | { | |
3814 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3815 | htab_t *htab = p; | |
3816 | ||
3817 | if (entry->symndx == -1) | |
3818 | { | |
3819 | struct elf_link_hash_entry *h = entry->d.h; | |
3820 | struct bfinfdpic_relocs_info *oentry; | |
3821 | ||
3822 | while (h->root.type == bfd_link_hash_indirect | |
3823 | || h->root.type == bfd_link_hash_warning) | |
3824 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
3825 | ||
3826 | if (entry->d.h == h) | |
3827 | return 1; | |
3828 | ||
3829 | oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, | |
3830 | NO_INSERT); | |
3831 | ||
3832 | if (oentry) | |
3833 | { | |
3834 | /* Merge the two entries. */ | |
3835 | bfinfdpic_pic_merge_early_relocs_info (oentry, entry); | |
3836 | htab_clear_slot (*htab, entryp); | |
3837 | return 1; | |
3838 | } | |
3839 | ||
3840 | entry->d.h = h; | |
3841 | ||
3842 | /* If we can't find this entry with the new bfd hash, re-insert | |
3843 | it, and get the traversal restarted. */ | |
3844 | if (! htab_find (*htab, entry)) | |
3845 | { | |
3846 | htab_clear_slot (*htab, entryp); | |
3847 | entryp = htab_find_slot (*htab, entry, INSERT); | |
3848 | if (! *entryp) | |
3849 | *entryp = entry; | |
3850 | /* Abort the traversal, since the whole table may have | |
3851 | moved, and leave it up to the parent to restart the | |
3852 | process. */ | |
3853 | *(htab_t *)p = NULL; | |
3854 | return 0; | |
3855 | } | |
3856 | } | |
3857 | ||
3858 | return 1; | |
3859 | } | |
3860 | ||
6a9adeca BS |
3861 | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
3862 | section and the rofixup section. Assign locations for GOT and PLT | |
3863 | entries. */ | |
48d502e1 | 3864 | |
0a1b45a2 | 3865 | static bool |
6a9adeca BS |
3866 | _bfinfdpic_size_got_plt (bfd *output_bfd, |
3867 | struct _bfinfdpic_dynamic_got_plt_info *gpinfop) | |
48d502e1 | 3868 | { |
48d502e1 BS |
3869 | bfd_signed_vma odd; |
3870 | bfd_vma limit; | |
6a9adeca BS |
3871 | struct bfd_link_info *info = gpinfop->g.info; |
3872 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
48d502e1 | 3873 | |
6a9adeca BS |
3874 | memcpy (bfinfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
3875 | sizeof (gpinfop->g)); | |
48d502e1 BS |
3876 | |
3877 | odd = 12; | |
3878 | /* Compute the total size taken by entries in the 18-bit range, | |
3879 | to tell how many PLT function descriptors we can bring into it | |
3880 | without causing it to overflow. */ | |
6a9adeca | 3881 | limit = odd + gpinfop->g.got17m4 + gpinfop->g.fd17m4; |
48d502e1 BS |
3882 | if (limit < (bfd_vma)1 << 18) |
3883 | limit = ((bfd_vma)1 << 18) - limit; | |
3884 | else | |
3885 | limit = 0; | |
6a9adeca BS |
3886 | if (gpinfop->g.fdplt < limit) |
3887 | limit = gpinfop->g.fdplt; | |
48d502e1 BS |
3888 | |
3889 | /* Determine the ranges of GOT offsets that we can use for each | |
3890 | range of addressing modes. */ | |
6a9adeca | 3891 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->got17m4, |
48d502e1 BS |
3892 | 0, |
3893 | odd, | |
3894 | 16, | |
6a9adeca BS |
3895 | gpinfop->g.got17m4, |
3896 | gpinfop->g.fd17m4, | |
48d502e1 BS |
3897 | limit, |
3898 | (bfd_vma)1 << (18-1)); | |
6a9adeca BS |
3899 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
3900 | gpinfop->got17m4.min, | |
48d502e1 | 3901 | odd, |
6a9adeca BS |
3902 | gpinfop->got17m4.max, |
3903 | gpinfop->g.gothilo, | |
3904 | gpinfop->g.fdhilo, | |
3905 | gpinfop->g.fdplt - gpinfop->got17m4.fdplt, | |
48d502e1 BS |
3906 | (bfd_vma)1 << (32-1)); |
3907 | ||
3908 | /* Now assign (most) GOT offsets. */ | |
3909 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries, | |
6a9adeca | 3910 | gpinfop); |
48d502e1 | 3911 | |
6a9adeca BS |
3912 | bfinfdpic_got_section (info)->size = gpinfop->gothilo.max |
3913 | - gpinfop->gothilo.min | |
48d502e1 BS |
3914 | /* If an odd word is the last word of the GOT, we don't need this |
3915 | word to be part of the GOT. */ | |
6a9adeca | 3916 | - (odd + 4 == gpinfop->gothilo.max ? 4 : 0); |
48d502e1 BS |
3917 | if (bfinfdpic_got_section (info)->size == 0) |
3918 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
3919 | else if (bfinfdpic_got_section (info)->size == 12 | |
3920 | && ! elf_hash_table (info)->dynamic_sections_created) | |
3921 | { | |
3922 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
3923 | bfinfdpic_got_section (info)->size = 0; | |
3924 | } | |
3925 | else | |
3926 | { | |
3927 | bfinfdpic_got_section (info)->contents = | |
3928 | (bfd_byte *) bfd_zalloc (dynobj, | |
3929 | bfinfdpic_got_section (info)->size); | |
3930 | if (bfinfdpic_got_section (info)->contents == NULL) | |
0a1b45a2 | 3931 | return false; |
48d502e1 BS |
3932 | } |
3933 | ||
3934 | if (elf_hash_table (info)->dynamic_sections_created) | |
3935 | /* Subtract the number of lzplt entries, since those will generate | |
3936 | relocations in the pltrel section. */ | |
3937 | bfinfdpic_gotrel_section (info)->size = | |
6a9adeca | 3938 | (gpinfop->g.relocs - gpinfop->g.lzplt / LZPLT_NORMAL_SIZE) |
48d502e1 BS |
3939 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
3940 | else | |
6a9adeca | 3941 | BFD_ASSERT (gpinfop->g.relocs == 0); |
48d502e1 BS |
3942 | if (bfinfdpic_gotrel_section (info)->size == 0) |
3943 | bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; | |
3944 | else | |
3945 | { | |
3946 | bfinfdpic_gotrel_section (info)->contents = | |
3947 | (bfd_byte *) bfd_zalloc (dynobj, | |
3948 | bfinfdpic_gotrel_section (info)->size); | |
3949 | if (bfinfdpic_gotrel_section (info)->contents == NULL) | |
0a1b45a2 | 3950 | return false; |
48d502e1 BS |
3951 | } |
3952 | ||
6a9adeca | 3953 | bfinfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
48d502e1 BS |
3954 | if (bfinfdpic_gotfixup_section (info)->size == 0) |
3955 | bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; | |
3956 | else | |
3957 | { | |
3958 | bfinfdpic_gotfixup_section (info)->contents = | |
3959 | (bfd_byte *) bfd_zalloc (dynobj, | |
3960 | bfinfdpic_gotfixup_section (info)->size); | |
3961 | if (bfinfdpic_gotfixup_section (info)->contents == NULL) | |
0a1b45a2 | 3962 | return false; |
48d502e1 BS |
3963 | } |
3964 | ||
3965 | if (elf_hash_table (info)->dynamic_sections_created) | |
d3e32c2e JZ |
3966 | bfinfdpic_pltrel_section (info)->size = |
3967 | gpinfop->g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel; | |
3968 | if (bfinfdpic_pltrel_section (info)->size == 0) | |
3969 | bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; | |
3970 | else | |
48d502e1 | 3971 | { |
d3e32c2e JZ |
3972 | bfinfdpic_pltrel_section (info)->contents = |
3973 | (bfd_byte *) bfd_zalloc (dynobj, | |
3974 | bfinfdpic_pltrel_section (info)->size); | |
3975 | if (bfinfdpic_pltrel_section (info)->contents == NULL) | |
0a1b45a2 | 3976 | return false; |
48d502e1 BS |
3977 | } |
3978 | ||
3979 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, | |
3980 | such that there's room for the additional instruction needed to | |
3981 | call the resolver. Since _bfinfdpic_assign_got_entries didn't | |
3982 | account for them, our block size is 4 bytes smaller than the real | |
3983 | block size. */ | |
3984 | if (elf_hash_table (info)->dynamic_sections_created) | |
3985 | { | |
6a9adeca BS |
3986 | bfinfdpic_plt_section (info)->size = gpinfop->g.lzplt |
3987 | + ((gpinfop->g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE) | |
48d502e1 BS |
3988 | / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA); |
3989 | } | |
3990 | ||
3991 | /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to | |
3992 | actually assign lazy PLT entries addresses. */ | |
6a9adeca | 3993 | gpinfop->g.lzplt = 0; |
48d502e1 BS |
3994 | |
3995 | /* Save information that we're going to need to generate GOT and PLT | |
3996 | entries. */ | |
6a9adeca | 3997 | bfinfdpic_got_initial_offset (info) = -gpinfop->gothilo.min; |
48d502e1 BS |
3998 | |
3999 | if (get_elf_backend_data (output_bfd)->want_got_sym) | |
4000 | elf_hash_table (info)->hgot->root.u.def.value | |
6a9adeca | 4001 | = bfinfdpic_got_initial_offset (info); |
48d502e1 BS |
4002 | |
4003 | if (elf_hash_table (info)->dynamic_sections_created) | |
4004 | bfinfdpic_plt_initial_offset (info) = | |
4005 | bfinfdpic_plt_section (info)->size; | |
4006 | ||
4007 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries, | |
6a9adeca | 4008 | gpinfop); |
48d502e1 BS |
4009 | |
4010 | /* Allocate the PLT section contents only after | |
4011 | _bfinfdpic_assign_plt_entries has a chance to add the size of the | |
4012 | non-lazy PLT entries. */ | |
d3e32c2e JZ |
4013 | if (bfinfdpic_plt_section (info)->size == 0) |
4014 | bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE; | |
4015 | else | |
48d502e1 | 4016 | { |
d3e32c2e JZ |
4017 | bfinfdpic_plt_section (info)->contents = |
4018 | (bfd_byte *) bfd_zalloc (dynobj, | |
4019 | bfinfdpic_plt_section (info)->size); | |
4020 | if (bfinfdpic_plt_section (info)->contents == NULL) | |
0a1b45a2 | 4021 | return false; |
48d502e1 BS |
4022 | } |
4023 | ||
0a1b45a2 | 4024 | return true; |
6a9adeca BS |
4025 | } |
4026 | ||
4027 | /* Set the sizes of the dynamic sections. */ | |
4028 | ||
0a1b45a2 | 4029 | static bool |
6a9adeca BS |
4030 | elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd, |
4031 | struct bfd_link_info *info) | |
4032 | { | |
4033 | struct elf_link_hash_table *htab; | |
4034 | bfd *dynobj; | |
4035 | asection *s; | |
4036 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4037 | ||
4038 | htab = elf_hash_table (info); | |
4039 | dynobj = htab->dynobj; | |
4040 | BFD_ASSERT (dynobj != NULL); | |
4041 | ||
4042 | if (htab->dynamic_sections_created) | |
4043 | { | |
4044 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 4045 | if (bfd_link_executable (info) && !info->nointerp) |
6a9adeca | 4046 | { |
3d4d4302 | 4047 | s = bfd_get_linker_section (dynobj, ".interp"); |
6a9adeca BS |
4048 | BFD_ASSERT (s != NULL); |
4049 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4050 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
4051 | } | |
4052 | } | |
4053 | ||
4054 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4055 | gpinfo.g.info = info; | |
4056 | ||
4057 | for (;;) | |
4058 | { | |
4059 | htab_t relocs = bfinfdpic_relocs_info (info); | |
4060 | ||
4061 | htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs); | |
4062 | ||
4063 | if (relocs == bfinfdpic_relocs_info (info)) | |
4064 | break; | |
4065 | } | |
4066 | ||
4067 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries, | |
4068 | &gpinfo.g); | |
4069 | ||
4070 | /* Allocate space to save the summary information, we're going to | |
4071 | use it if we're doing relaxations. */ | |
4072 | bfinfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); | |
4073 | ||
4074 | if (!_bfinfdpic_size_got_plt (output_bfd, &gpinfo)) | |
0a1b45a2 | 4075 | return false; |
6a9adeca | 4076 | |
3d4d4302 | 4077 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
153d38f6 JZ |
4078 | if (s && s->size == 0) |
4079 | s->flags |= SEC_EXCLUDE; | |
4080 | ||
3d4d4302 | 4081 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
153d38f6 JZ |
4082 | if (s && s->size == 0) |
4083 | s->flags |= SEC_EXCLUDE; | |
4084 | ||
0a1b45a2 | 4085 | return _bfd_elf_add_dynamic_tags (output_bfd, info, true); |
48d502e1 BS |
4086 | } |
4087 | ||
0a1b45a2 | 4088 | static bool |
48d502e1 BS |
4089 | elf32_bfinfdpic_always_size_sections (bfd *output_bfd, |
4090 | struct bfd_link_info *info) | |
4091 | { | |
0e1862bb | 4092 | if (!bfd_link_relocatable (info) |
04c3a755 NS |
4093 | && !bfd_elf_stack_segment_size (output_bfd, info, |
4094 | "__stacksize", DEFAULT_STACK_SIZE)) | |
0a1b45a2 | 4095 | return false; |
48d502e1 | 4096 | |
0a1b45a2 | 4097 | return true; |
48d502e1 BS |
4098 | } |
4099 | ||
6a9adeca BS |
4100 | /* Check whether any of the relocations was optimized away, and |
4101 | subtract it from the relocation or fixup count. */ | |
0a1b45a2 | 4102 | static bool |
6a9adeca | 4103 | _bfinfdpic_check_discarded_relocs (bfd *abfd, asection *sec, |
2c3fc389 | 4104 | struct bfd_link_info *info, |
0a1b45a2 | 4105 | bool *changed) |
6a9adeca BS |
4106 | { |
4107 | Elf_Internal_Shdr *symtab_hdr; | |
9bc8e54b | 4108 | struct elf_link_hash_entry **sym_hashes; |
6a9adeca BS |
4109 | Elf_Internal_Rela *rel, *erel; |
4110 | ||
4111 | if ((sec->flags & SEC_RELOC) == 0 | |
4112 | || sec->reloc_count == 0) | |
0a1b45a2 | 4113 | return true; |
6a9adeca BS |
4114 | |
4115 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4116 | sym_hashes = elf_sym_hashes (abfd); | |
6a9adeca BS |
4117 | |
4118 | rel = elf_section_data (sec)->relocs; | |
4119 | ||
4120 | /* Now examine each relocation. */ | |
4121 | for (erel = rel + sec->reloc_count; rel < erel; rel++) | |
4122 | { | |
4123 | struct elf_link_hash_entry *h; | |
4124 | unsigned long r_symndx; | |
4125 | struct bfinfdpic_relocs_info *picrel; | |
4126 | struct _bfinfdpic_dynamic_got_info *dinfo; | |
4127 | ||
4128 | if (ELF32_R_TYPE (rel->r_info) != R_BFIN_BYTE4_DATA | |
4129 | && ELF32_R_TYPE (rel->r_info) != R_BFIN_FUNCDESC) | |
4130 | continue; | |
4131 | ||
4132 | if (_bfd_elf_section_offset (sec->output_section->owner, | |
4133 | info, sec, rel->r_offset) | |
4134 | != (bfd_vma)-1) | |
4135 | continue; | |
4136 | ||
4137 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4138 | if (r_symndx < symtab_hdr->sh_info) | |
4139 | h = NULL; | |
4140 | else | |
4141 | { | |
4142 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4143 | while (h->root.type == bfd_link_hash_indirect | |
4144 | || h->root.type == bfd_link_hash_warning) | |
4145 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
4146 | } | |
4147 | ||
4148 | if (h != NULL) | |
4149 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4150 | abfd, h, | |
4151 | rel->r_addend, NO_INSERT); | |
4152 | else | |
4153 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info), | |
4154 | abfd, r_symndx, | |
4155 | rel->r_addend, NO_INSERT); | |
4156 | ||
4157 | if (! picrel) | |
0a1b45a2 | 4158 | return false; |
6a9adeca | 4159 | |
0a1b45a2 | 4160 | *changed = true; |
6a9adeca BS |
4161 | dinfo = bfinfdpic_dynamic_got_plt_info (info); |
4162 | ||
0a1b45a2 | 4163 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, true); |
6a9adeca BS |
4164 | if (ELF32_R_TYPE (rel->r_info) == R_BFIN_BYTE4_DATA) |
4165 | picrel->relocs32--; | |
4166 | else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */ | |
4167 | picrel->relocsfd--; | |
0a1b45a2 | 4168 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, false); |
6a9adeca BS |
4169 | } |
4170 | ||
0a1b45a2 | 4171 | return true; |
6a9adeca BS |
4172 | } |
4173 | ||
0a1b45a2 | 4174 | static bool |
6a9adeca BS |
4175 | bfinfdpic_elf_discard_info (bfd *ibfd, |
4176 | struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
4177 | struct bfd_link_info *info) | |
4178 | { | |
0a1b45a2 | 4179 | bool changed = false; |
6a9adeca BS |
4180 | asection *s; |
4181 | bfd *obfd = NULL; | |
4182 | ||
4183 | /* Account for relaxation of .eh_frame section. */ | |
4184 | for (s = ibfd->sections; s; s = s->next) | |
dbaa2011 | 4185 | if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
6a9adeca BS |
4186 | { |
4187 | if (!_bfinfdpic_check_discarded_relocs (ibfd, s, info, &changed)) | |
0a1b45a2 | 4188 | return false; |
6a9adeca BS |
4189 | obfd = s->output_section->owner; |
4190 | } | |
4191 | ||
4192 | if (changed) | |
4193 | { | |
4194 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4195 | ||
4196 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4197 | memcpy (&gpinfo.g, bfinfdpic_dynamic_got_plt_info (info), | |
4198 | sizeof (gpinfo.g)); | |
4199 | ||
4200 | /* Clear GOT and PLT assignments. */ | |
4201 | htab_traverse (bfinfdpic_relocs_info (info), | |
4202 | _bfinfdpic_reset_got_plt_entries, | |
4203 | NULL); | |
4204 | ||
4205 | if (!_bfinfdpic_size_got_plt (obfd, &gpinfo)) | |
0a1b45a2 | 4206 | return false; |
6a9adeca BS |
4207 | } |
4208 | ||
0a1b45a2 | 4209 | return true; |
6a9adeca BS |
4210 | } |
4211 | ||
0a1b45a2 | 4212 | static bool |
48d502e1 BS |
4213 | elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd, |
4214 | struct bfd_link_info *info) | |
4215 | { | |
4216 | bfd *dynobj; | |
4217 | asection *sdyn; | |
4218 | ||
4219 | dynobj = elf_hash_table (info)->dynobj; | |
4220 | ||
4221 | if (bfinfdpic_got_section (info)) | |
4222 | { | |
4223 | BFD_ASSERT (bfinfdpic_gotrel_section (info)->size | |
ed3056eb NC |
4224 | /* PR 17334: It appears that the GOT section can end up |
4225 | being bigger than the number of relocs. Presumably | |
4226 | because some relocs have been deleted. A test case has | |
4227 | yet to be generated for verify this, but in the meantime | |
4228 | the test below has been changed from == to >= so that | |
4229 | applications can continue to be built. */ | |
4230 | >= (bfinfdpic_gotrel_section (info)->reloc_count | |
48d502e1 BS |
4231 | * sizeof (Elf32_External_Rel))); |
4232 | ||
4233 | if (bfinfdpic_gotfixup_section (info)) | |
4234 | { | |
4235 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; | |
4236 | bfd_vma got_value = hgot->root.u.def.value | |
4237 | + hgot->root.u.def.section->output_section->vma | |
4238 | + hgot->root.u.def.section->output_offset; | |
4239 | ||
4240 | _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info), | |
4241 | got_value, 0); | |
4242 | ||
4243 | if (bfinfdpic_gotfixup_section (info)->size | |
4244 | != (bfinfdpic_gotfixup_section (info)->reloc_count * 4)) | |
0f64bb02 | 4245 | { |
4eca0228 | 4246 | _bfd_error_handler |
48d502e1 | 4247 | ("LINKER BUG: .rofixup section size mismatch"); |
0a1b45a2 | 4248 | return false; |
0f64bb02 CM |
4249 | } |
4250 | } | |
4251 | } | |
48d502e1 BS |
4252 | if (elf_hash_table (info)->dynamic_sections_created) |
4253 | { | |
4254 | BFD_ASSERT (bfinfdpic_pltrel_section (info)->size | |
4255 | == (bfinfdpic_pltrel_section (info)->reloc_count | |
4256 | * sizeof (Elf32_External_Rel))); | |
4257 | } | |
4258 | ||
3d4d4302 | 4259 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
48d502e1 BS |
4260 | |
4261 | if (elf_hash_table (info)->dynamic_sections_created) | |
4262 | { | |
4263 | Elf32_External_Dyn * dyncon; | |
4264 | Elf32_External_Dyn * dynconend; | |
4265 | ||
4266 | BFD_ASSERT (sdyn != NULL); | |
4267 | ||
4268 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4269 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
4270 | ||
4271 | for (; dyncon < dynconend; dyncon++) | |
4272 | { | |
4273 | Elf_Internal_Dyn dyn; | |
4274 | ||
4275 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4276 | ||
4277 | switch (dyn.d_tag) | |
4278 | { | |
4279 | default: | |
4280 | break; | |
4281 | ||
4282 | case DT_PLTGOT: | |
4283 | dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma | |
4284 | + bfinfdpic_got_section (info)->output_offset | |
4285 | + bfinfdpic_got_initial_offset (info); | |
4286 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4287 | break; | |
4288 | ||
4289 | case DT_JMPREL: | |
4290 | dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info) | |
4291 | ->output_section->vma | |
4292 | + bfinfdpic_pltrel_section (info)->output_offset; | |
4293 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4294 | break; | |
4295 | ||
4296 | case DT_PLTRELSZ: | |
4297 | dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size; | |
4298 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4299 | break; | |
4300 | } | |
4301 | } | |
4302 | } | |
4303 | ||
0a1b45a2 | 4304 | return true; |
48d502e1 BS |
4305 | } |
4306 | ||
4307 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4308 | regular object. */ | |
4309 | ||
0a1b45a2 | 4310 | static bool |
2c3fc389 NC |
4311 | elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info *info, |
4312 | struct elf_link_hash_entry *h) | |
48d502e1 BS |
4313 | { |
4314 | bfd * dynobj; | |
4315 | ||
4316 | dynobj = elf_hash_table (info)->dynobj; | |
4317 | ||
4318 | /* Make sure we know what is going on here. */ | |
4319 | BFD_ASSERT (dynobj != NULL | |
60d67dc8 | 4320 | && (h->is_weakalias |
48d502e1 BS |
4321 | || (h->def_dynamic |
4322 | && h->ref_regular | |
4323 | && !h->def_regular))); | |
4324 | ||
4325 | /* If this is a weak symbol, and there is a real definition, the | |
4326 | processor independent code will have arranged for us to see the | |
4327 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 4328 | if (h->is_weakalias) |
48d502e1 | 4329 | { |
60d67dc8 AM |
4330 | struct elf_link_hash_entry *def = weakdef (h); |
4331 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
4332 | h->root.u.def.section = def->root.u.def.section; | |
4333 | h->root.u.def.value = def->root.u.def.value; | |
48d502e1 | 4334 | } |
0f64bb02 | 4335 | |
0a1b45a2 | 4336 | return true; |
0f64bb02 CM |
4337 | } |
4338 | ||
48d502e1 BS |
4339 | /* Perform any actions needed for dynamic symbols. */ |
4340 | ||
0a1b45a2 | 4341 | static bool |
48d502e1 BS |
4342 | elf32_bfinfdpic_finish_dynamic_symbol |
4343 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4344 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4345 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, | |
4346 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) | |
0f64bb02 | 4347 | { |
0a1b45a2 | 4348 | return true; |
48d502e1 | 4349 | } |
0f64bb02 | 4350 | |
48d502e1 BS |
4351 | /* Decide whether to attempt to turn absptr or lsda encodings in |
4352 | shared libraries into pcrel within the given input section. */ | |
0f64bb02 | 4353 | |
0a1b45a2 | 4354 | static bool |
48d502e1 BS |
4355 | bfinfdpic_elf_use_relative_eh_frame |
4356 | (bfd *input_bfd ATTRIBUTE_UNUSED, | |
4357 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4358 | asection *eh_frame_section ATTRIBUTE_UNUSED) | |
4359 | { | |
4360 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ | |
0a1b45a2 | 4361 | return false; |
48d502e1 | 4362 | } |
0f64bb02 | 4363 | |
48d502e1 | 4364 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
0f64bb02 | 4365 | |
48d502e1 BS |
4366 | static bfd_byte |
4367 | bfinfdpic_elf_encode_eh_address (bfd *abfd, | |
4368 | struct bfd_link_info *info, | |
4369 | asection *osec, bfd_vma offset, | |
4370 | asection *loc_sec, bfd_vma loc_offset, | |
4371 | bfd_vma *encoded) | |
4372 | { | |
4373 | struct elf_link_hash_entry *h; | |
0f64bb02 | 4374 | |
48d502e1 BS |
4375 | h = elf_hash_table (info)->hgot; |
4376 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); | |
4377 | ||
4378 | if (! h || (_bfinfdpic_osec_to_segment (abfd, osec) | |
4379 | == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section))) | |
4380 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, | |
4381 | loc_sec, loc_offset, encoded); | |
4382 | ||
4383 | BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec) | |
4384 | == (_bfinfdpic_osec_to_segment | |
4385 | (abfd, h->root.u.def.section->output_section))); | |
4386 | ||
4387 | *encoded = osec->vma + offset | |
4388 | - (h->root.u.def.value | |
4389 | + h->root.u.def.section->output_section->vma | |
4390 | + h->root.u.def.section->output_offset); | |
4391 | ||
4392 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; | |
0f64bb02 CM |
4393 | } |
4394 | ||
4395 | ||
48d502e1 BS |
4396 | |
4397 | /* Look through the relocs for a section during the first phase. | |
4398 | ||
4399 | Besides handling virtual table relocs for gc, we have to deal with | |
4400 | all sorts of PIC-related relocations. We describe below the | |
4401 | general plan on how to handle such relocations, even though we only | |
4402 | collect information at this point, storing them in hash tables for | |
4403 | perusal of later passes. | |
4404 | ||
4405 | 32 relocations are propagated to the linker output when creating | |
4406 | position-independent output. LO16 and HI16 relocations are not | |
4407 | supposed to be encountered in this case. | |
4408 | ||
4409 | LABEL16 should always be resolvable by the linker, since it's only | |
4410 | used by branches. | |
4411 | ||
4412 | LABEL24, on the other hand, is used by calls. If it turns out that | |
4413 | the target of a call is a dynamic symbol, a PLT entry must be | |
4414 | created for it, which triggers the creation of a private function | |
4415 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. | |
4416 | ||
4417 | GPREL relocations require the referenced symbol to be in the same | |
4418 | segment as _gp, but this can only be checked later. | |
4419 | ||
4420 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to | |
4421 | exist. LABEL24 might as well, since it may require a PLT entry, | |
4422 | that will require a got. | |
4423 | ||
4424 | Non-FUNCDESC GOT relocations require a GOT entry to be created | |
4425 | regardless of whether the symbol is dynamic. However, since a | |
4426 | global symbol that turns out to not be exported may have the same | |
4427 | address of a non-dynamic symbol, we don't assign GOT entries at | |
4428 | this point, such that we can share them in this case. A relocation | |
4429 | for the GOT entry always has to be created, be it to offset a | |
4430 | private symbol by the section load address, be it to get the symbol | |
4431 | resolved dynamically. | |
4432 | ||
4433 | FUNCDESC GOT relocations require a GOT entry to be created, and | |
4434 | handled as if a FUNCDESC relocation was applied to the GOT entry in | |
4435 | an object file. | |
4436 | ||
4437 | FUNCDESC relocations referencing a symbol that turns out to NOT be | |
4438 | dynamic cause a private function descriptor to be created. The | |
4439 | FUNCDESC relocation then decays to a 32 relocation that points at | |
4440 | the private descriptor. If the symbol is dynamic, the FUNCDESC | |
4441 | relocation is propagated to the linker output, such that the | |
4442 | dynamic linker creates the canonical descriptor, pointing to the | |
4443 | dynamically-resolved definition of the function. | |
4444 | ||
4445 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic | |
4446 | symbols that are assigned to the same segment as the GOT, but we | |
4447 | can only check this later, after we know the complete set of | |
4448 | symbols defined and/or exported. | |
4449 | ||
4450 | FUNCDESC GOTOFF relocations require a function descriptor to be | |
4451 | created and, unless lazy binding is disabled or the symbol is not | |
4452 | dynamic, a lazy PLT entry. Since we can't tell at this point | |
4453 | whether a symbol is going to be dynamic, we have to decide later | |
4454 | whether to create a lazy PLT entry or bind the descriptor directly | |
4455 | to the private function. | |
4456 | ||
4457 | FUNCDESC_VALUE relocations are not supposed to be present in object | |
4458 | files, but they may very well be simply propagated to the linker | |
4459 | output, since they have no side effect. | |
4460 | ||
4461 | ||
4462 | A function descriptor always requires a FUNCDESC_VALUE relocation. | |
4463 | Whether it's in .plt.rel or not depends on whether lazy binding is | |
4464 | enabled and on whether the referenced symbol is dynamic. | |
4465 | ||
4466 | The existence of a lazy PLT requires the resolverStub lazy PLT | |
4467 | entry to be present. | |
4468 | ||
4469 | ||
4470 | As for assignment of GOT, PLT and lazy PLT entries, and private | |
4471 | descriptors, we might do them all sequentially, but we can do | |
4472 | better than that. For example, we can place GOT entries and | |
4473 | private function descriptors referenced using 12-bit operands | |
4474 | closer to the PIC register value, such that these relocations don't | |
4475 | overflow. Those that are only referenced with LO16 relocations | |
4476 | could come next, but we may as well place PLT-required function | |
4477 | descriptors in the 12-bit range to make them shorter. Symbols | |
4478 | referenced with LO16/HI16 may come next, but we may place | |
4479 | additional function descriptors in the 16-bit range if we can | |
4480 | reliably tell that we've already placed entries that are ever | |
4481 | referenced with only LO16. PLT entries are therefore generated as | |
4482 | small as possible, while not introducing relocation overflows in | |
4483 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be | |
4484 | generated before or after PLT entries, but not intermingled with | |
4485 | them, such that we can have more lazy PLT entries in range for a | |
4486 | branch to the resolverStub. The resolverStub should be emitted at | |
4487 | the most distant location from the first lazy PLT entry such that | |
4488 | it's still in range for a branch, or closer, if there isn't a need | |
4489 | for so many lazy PLT entries. Additional lazy PLT entries may be | |
4490 | emitted after the resolverStub, as long as branches are still in | |
4491 | range. If the branch goes out of range, longer lazy PLT entries | |
4492 | are emitted. | |
4493 | ||
4494 | We could further optimize PLT and lazy PLT entries by giving them | |
4495 | priority in assignment to closer-to-gr17 locations depending on the | |
4496 | number of occurrences of references to them (assuming a function | |
4497 | that's called more often is more important for performance, so its | |
4498 | PLT entry should be faster), or taking hints from the compiler. | |
4499 | Given infinite time and money... :-) */ | |
0f64bb02 | 4500 | |
0a1b45a2 | 4501 | static bool |
48d502e1 BS |
4502 | bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4503 | asection *sec, const Elf_Internal_Rela *relocs) | |
0f64bb02 CM |
4504 | { |
4505 | Elf_Internal_Shdr *symtab_hdr; | |
5582a088 | 4506 | struct elf_link_hash_entry **sym_hashes; |
48d502e1 BS |
4507 | const Elf_Internal_Rela *rel; |
4508 | const Elf_Internal_Rela *rel_end; | |
0f64bb02 | 4509 | bfd *dynobj; |
48d502e1 | 4510 | struct bfinfdpic_relocs_info *picrel; |
0f64bb02 | 4511 | |
0e1862bb | 4512 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 4513 | return true; |
0f64bb02 CM |
4514 | |
4515 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4516 | sym_hashes = elf_sym_hashes (abfd); | |
0f64bb02 | 4517 | |
48d502e1 BS |
4518 | dynobj = elf_hash_table (info)->dynobj; |
4519 | rel_end = relocs + sec->reloc_count; | |
4520 | for (rel = relocs; rel < rel_end; rel++) | |
0f64bb02 | 4521 | { |
0f64bb02 | 4522 | struct elf_link_hash_entry *h; |
48d502e1 BS |
4523 | unsigned long r_symndx; |
4524 | ||
4525 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4526 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 | 4527 | h = NULL; |
48d502e1 | 4528 | else |
d4e57b87 L |
4529 | { |
4530 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4531 | while (h->root.type == bfd_link_hash_indirect | |
4532 | || h->root.type == bfd_link_hash_warning) | |
4533 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4534 | } | |
0f64bb02 CM |
4535 | |
4536 | switch (ELF32_R_TYPE (rel->r_info)) | |
4537 | { | |
48d502e1 BS |
4538 | case R_BFIN_GOT17M4: |
4539 | case R_BFIN_GOTHI: | |
4540 | case R_BFIN_GOTLO: | |
4541 | case R_BFIN_FUNCDESC_GOT17M4: | |
4542 | case R_BFIN_FUNCDESC_GOTHI: | |
4543 | case R_BFIN_FUNCDESC_GOTLO: | |
4544 | case R_BFIN_GOTOFF17M4: | |
4545 | case R_BFIN_GOTOFFHI: | |
4546 | case R_BFIN_GOTOFFLO: | |
4547 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
4548 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4549 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
4550 | case R_BFIN_FUNCDESC: | |
4551 | case R_BFIN_FUNCDESC_VALUE: | |
4552 | if (! IS_FDPIC (abfd)) | |
4553 | goto bad_reloc; | |
4554 | /* Fall through. */ | |
cb88ce9f BS |
4555 | case R_BFIN_PCREL24: |
4556 | case R_BFIN_PCREL24_JUMP_L: | |
4557 | case R_BFIN_BYTE4_DATA: | |
48d502e1 | 4558 | if (IS_FDPIC (abfd) && ! dynobj) |
0f64bb02 | 4559 | { |
48d502e1 BS |
4560 | elf_hash_table (info)->dynobj = dynobj = abfd; |
4561 | if (! _bfin_create_got_section (abfd, info)) | |
0a1b45a2 | 4562 | return false; |
0f64bb02 | 4563 | } |
48d502e1 | 4564 | if (! IS_FDPIC (abfd)) |
0f64bb02 | 4565 | { |
48d502e1 BS |
4566 | picrel = NULL; |
4567 | break; | |
4568 | } | |
4569 | if (h != NULL) | |
4570 | { | |
4571 | if (h->dynindx == -1) | |
4572 | switch (ELF_ST_VISIBILITY (h->other)) | |
4573 | { | |
4574 | case STV_INTERNAL: | |
4575 | case STV_HIDDEN: | |
4576 | break; | |
4577 | default: | |
4578 | bfd_elf_link_record_dynamic_symbol (info, h); | |
4579 | break; | |
4580 | } | |
4581 | picrel | |
4582 | = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4583 | abfd, h, | |
4584 | rel->r_addend, INSERT); | |
0f64bb02 | 4585 | } |
48d502e1 BS |
4586 | else |
4587 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
4588 | (info), abfd, r_symndx, | |
4589 | rel->r_addend, INSERT); | |
4590 | if (! picrel) | |
0a1b45a2 | 4591 | return false; |
0f64bb02 | 4592 | break; |
48d502e1 | 4593 | |
0f64bb02 | 4594 | default: |
48d502e1 | 4595 | picrel = NULL; |
0f64bb02 CM |
4596 | break; |
4597 | } | |
48d502e1 BS |
4598 | |
4599 | switch (ELF32_R_TYPE (rel->r_info)) | |
07d6d2b8 | 4600 | { |
cb88ce9f BS |
4601 | case R_BFIN_PCREL24: |
4602 | case R_BFIN_PCREL24_JUMP_L: | |
48d502e1 | 4603 | if (IS_FDPIC (abfd)) |
2774f1a6 | 4604 | picrel->call++; |
48d502e1 BS |
4605 | break; |
4606 | ||
4607 | case R_BFIN_FUNCDESC_VALUE: | |
4608 | picrel->relocsfdv++; | |
fd361982 | 4609 | if (bfd_section_flags (sec) & SEC_ALLOC) |
48d502e1 BS |
4610 | picrel->relocs32--; |
4611 | /* Fall through. */ | |
4612 | ||
cb88ce9f | 4613 | case R_BFIN_BYTE4_DATA: |
48d502e1 BS |
4614 | if (! IS_FDPIC (abfd)) |
4615 | break; | |
4616 | ||
2774f1a6 | 4617 | picrel->sym++; |
fd361982 | 4618 | if (bfd_section_flags (sec) & SEC_ALLOC) |
48d502e1 BS |
4619 | picrel->relocs32++; |
4620 | break; | |
4621 | ||
4622 | case R_BFIN_GOT17M4: | |
2774f1a6 | 4623 | picrel->got17m4++; |
48d502e1 BS |
4624 | break; |
4625 | ||
4626 | case R_BFIN_GOTHI: | |
4627 | case R_BFIN_GOTLO: | |
2774f1a6 | 4628 | picrel->gothilo++; |
48d502e1 BS |
4629 | break; |
4630 | ||
4631 | case R_BFIN_FUNCDESC_GOT17M4: | |
2774f1a6 | 4632 | picrel->fdgot17m4++; |
48d502e1 BS |
4633 | break; |
4634 | ||
4635 | case R_BFIN_FUNCDESC_GOTHI: | |
4636 | case R_BFIN_FUNCDESC_GOTLO: | |
2774f1a6 | 4637 | picrel->fdgothilo++; |
48d502e1 BS |
4638 | break; |
4639 | ||
4640 | case R_BFIN_GOTOFF17M4: | |
4641 | case R_BFIN_GOTOFFHI: | |
4642 | case R_BFIN_GOTOFFLO: | |
2774f1a6 | 4643 | picrel->gotoff++; |
48d502e1 BS |
4644 | break; |
4645 | ||
4646 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2774f1a6 | 4647 | picrel->fdgoff17m4++; |
48d502e1 BS |
4648 | break; |
4649 | ||
4650 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4651 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2774f1a6 | 4652 | picrel->fdgoffhilo++; |
48d502e1 BS |
4653 | break; |
4654 | ||
4655 | case R_BFIN_FUNCDESC: | |
2774f1a6 | 4656 | picrel->fd++; |
48d502e1 BS |
4657 | picrel->relocsfd++; |
4658 | break; | |
4659 | ||
07d6d2b8 AM |
4660 | /* This relocation describes the C++ object vtable hierarchy. |
4661 | Reconstruct it for later use during GC. */ | |
4662 | case R_BFIN_GNU_VTINHERIT: | |
4663 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
0a1b45a2 | 4664 | return false; |
07d6d2b8 AM |
4665 | break; |
4666 | ||
4667 | /* This relocation describes which C++ vtable entries are actually | |
4668 | used. Record for later use during GC. */ | |
4669 | case R_BFIN_GNU_VTENTRY: | |
4670 | BFD_ASSERT (h != NULL); | |
4671 | if (h != NULL | |
4672 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
0a1b45a2 | 4673 | return false; |
07d6d2b8 | 4674 | break; |
48d502e1 | 4675 | |
cb88ce9f BS |
4676 | case R_BFIN_HUIMM16: |
4677 | case R_BFIN_LUIMM16: | |
4678 | case R_BFIN_PCREL12_JUMP_S: | |
4679 | case R_BFIN_PCREL10: | |
48d502e1 BS |
4680 | break; |
4681 | ||
4682 | default: | |
4683 | bad_reloc: | |
4eca0228 | 4684 | _bfd_error_handler |
695344c0 | 4685 | /* xgettext:c-format */ |
0aa13fee | 4686 | (_("%pB: unsupported relocation type %#x"), |
d42c267e | 4687 | abfd, (int) ELF32_R_TYPE (rel->r_info)); |
0a1b45a2 | 4688 | return false; |
07d6d2b8 | 4689 | } |
0f64bb02 CM |
4690 | } |
4691 | ||
0a1b45a2 | 4692 | return true; |
0f64bb02 CM |
4693 | } |
4694 | ||
48d502e1 BS |
4695 | /* Set the right machine number for a Blackfin ELF file. */ |
4696 | ||
0a1b45a2 | 4697 | static bool |
48d502e1 BS |
4698 | elf32_bfin_object_p (bfd *abfd) |
4699 | { | |
4700 | bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0); | |
4701 | return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0) | |
4702 | == (IS_FDPIC (abfd))); | |
4703 | } | |
0f64bb02 | 4704 | |
0a1b45a2 | 4705 | static bool |
48d502e1 | 4706 | elf32_bfin_set_private_flags (bfd * abfd, flagword flags) |
0f64bb02 | 4707 | { |
48d502e1 | 4708 | elf_elfheader (abfd)->e_flags = flags; |
0a1b45a2 AM |
4709 | elf_flags_init (abfd) = true; |
4710 | return true; | |
48d502e1 | 4711 | } |
0f64bb02 | 4712 | |
0f64bb02 | 4713 | /* Display the flags field. */ |
0a1b45a2 | 4714 | static bool |
2c3fc389 | 4715 | elf32_bfin_print_private_bfd_data (bfd * abfd, void * ptr) |
0f64bb02 CM |
4716 | { |
4717 | FILE *file = (FILE *) ptr; | |
48d502e1 | 4718 | flagword flags; |
0f64bb02 CM |
4719 | |
4720 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4721 | ||
4722 | /* Print normal ELF private data. */ | |
4723 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4724 | ||
48d502e1 | 4725 | flags = elf_elfheader (abfd)->e_flags; |
0f64bb02 CM |
4726 | |
4727 | /* xgettext:c-format */ | |
4728 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4729 | ||
48d502e1 BS |
4730 | if (flags & EF_BFIN_PIC) |
4731 | fprintf (file, " -fpic"); | |
4732 | ||
4733 | if (flags & EF_BFIN_FDPIC) | |
4734 | fprintf (file, " -mfdpic"); | |
4735 | ||
0f64bb02 CM |
4736 | fputc ('\n', file); |
4737 | ||
0a1b45a2 | 4738 | return true; |
0f64bb02 CM |
4739 | } |
4740 | ||
48d502e1 BS |
4741 | /* Merge backend specific data from an object file to the output |
4742 | object file when linking. */ | |
4743 | ||
0a1b45a2 | 4744 | static bool |
50e03d47 | 4745 | elf32_bfin_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
48d502e1 | 4746 | { |
50e03d47 | 4747 | bfd *obfd = info->output_bfd; |
7a84e3da | 4748 | flagword old_flags, new_flags; |
0a1b45a2 | 4749 | bool error = false; |
48d502e1 | 4750 | |
6b728d32 AM |
4751 | /* FIXME: What should be checked when linking shared libraries? */ |
4752 | if ((ibfd->flags & DYNAMIC) != 0) | |
0a1b45a2 | 4753 | return true; |
6b728d32 | 4754 | |
48d502e1 BS |
4755 | new_flags = elf_elfheader (ibfd)->e_flags; |
4756 | old_flags = elf_elfheader (obfd)->e_flags; | |
4757 | ||
4758 | if (new_flags & EF_BFIN_FDPIC) | |
4759 | new_flags &= ~EF_BFIN_PIC; | |
4760 | ||
c7e2358a AM |
4761 | #ifndef DEBUG |
4762 | if (0) | |
4763 | #endif | |
4eca0228 | 4764 | _bfd_error_handler |
871b3ab2 | 4765 | ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %pB", |
dae82561 | 4766 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", ibfd); |
48d502e1 BS |
4767 | |
4768 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
4769 | { | |
0a1b45a2 | 4770 | elf_flags_init (obfd) = true; |
7a84e3da | 4771 | elf_elfheader (obfd)->e_flags = new_flags; |
48d502e1 BS |
4772 | } |
4773 | ||
7a84e3da | 4774 | if (((new_flags & EF_BFIN_FDPIC) == 0) != (! IS_FDPIC (obfd))) |
48d502e1 | 4775 | { |
0a1b45a2 | 4776 | error = true; |
48d502e1 | 4777 | if (IS_FDPIC (obfd)) |
4eca0228 | 4778 | _bfd_error_handler |
871b3ab2 | 4779 | (_("%pB: cannot link non-fdpic object file into fdpic executable"), |
dae82561 | 4780 | ibfd); |
48d502e1 | 4781 | else |
4eca0228 | 4782 | _bfd_error_handler |
871b3ab2 | 4783 | (_("%pB: cannot link fdpic object file into non-fdpic executable"), |
dae82561 | 4784 | ibfd); |
48d502e1 BS |
4785 | } |
4786 | ||
4787 | if (error) | |
4788 | bfd_set_error (bfd_error_bad_value); | |
4789 | ||
4790 | return !error; | |
4791 | } | |
4792 | \f | |
0f64bb02 CM |
4793 | /* bfin ELF linker hash entry. */ |
4794 | ||
4795 | struct bfin_link_hash_entry | |
4796 | { | |
4797 | struct elf_link_hash_entry root; | |
4798 | ||
4799 | /* Number of PC relative relocs copied for this symbol. */ | |
4800 | struct bfin_pcrel_relocs_copied *pcrel_relocs_copied; | |
4801 | }; | |
4802 | ||
0f64bb02 CM |
4803 | #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent)) |
4804 | ||
4805 | static struct bfd_hash_entry * | |
4806 | bfin_link_hash_newfunc (struct bfd_hash_entry *entry, | |
48d502e1 | 4807 | struct bfd_hash_table *table, const char *string) |
0f64bb02 CM |
4808 | { |
4809 | struct bfd_hash_entry *ret = entry; | |
4810 | ||
4811 | /* Allocate the structure if it has not already been allocated by a | |
4812 | subclass. */ | |
4813 | if (ret == NULL) | |
4814 | ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry)); | |
4815 | if (ret == NULL) | |
4816 | return ret; | |
4817 | ||
4818 | /* Call the allocation method of the superclass. */ | |
4819 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); | |
4820 | if (ret != NULL) | |
4821 | bfin_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
4822 | ||
4823 | return ret; | |
4824 | } | |
4825 | ||
4826 | /* Create an bfin ELF linker hash table. */ | |
4827 | ||
4828 | static struct bfd_link_hash_table * | |
4829 | bfin_link_hash_table_create (bfd * abfd) | |
4830 | { | |
f1dfbfdb L |
4831 | struct elf_link_hash_table *ret; |
4832 | size_t amt = sizeof (struct elf_link_hash_table); | |
0f64bb02 | 4833 | |
22cdc249 | 4834 | ret = bfd_zmalloc (amt); |
48d502e1 | 4835 | if (ret == NULL) |
0f64bb02 CM |
4836 | return NULL; |
4837 | ||
f1dfbfdb | 4838 | if (!_bfd_elf_link_hash_table_init (ret, abfd, bfin_link_hash_newfunc, |
4dfe6ac6 NC |
4839 | sizeof (struct elf_link_hash_entry), |
4840 | BFIN_ELF_DATA)) | |
0f64bb02 CM |
4841 | { |
4842 | free (ret); | |
4843 | return NULL; | |
4844 | } | |
4845 | ||
f1dfbfdb | 4846 | return &ret->root; |
0f64bb02 CM |
4847 | } |
4848 | ||
4849 | /* The size in bytes of an entry in the procedure linkage table. */ | |
4850 | ||
4851 | /* Finish up the dynamic sections. */ | |
4852 | ||
0a1b45a2 | 4853 | static bool |
0f64bb02 | 4854 | bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
2c3fc389 | 4855 | struct bfd_link_info *info) |
0f64bb02 CM |
4856 | { |
4857 | bfd *dynobj; | |
4858 | asection *sdyn; | |
4859 | ||
4860 | dynobj = elf_hash_table (info)->dynobj; | |
4861 | ||
3d4d4302 | 4862 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
0f64bb02 CM |
4863 | |
4864 | if (elf_hash_table (info)->dynamic_sections_created) | |
4865 | { | |
4866 | Elf32_External_Dyn *dyncon, *dynconend; | |
4867 | ||
4868 | BFD_ASSERT (sdyn != NULL); | |
4869 | ||
4870 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4871 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
4872 | for (; dyncon < dynconend; dyncon++) | |
4873 | { | |
4874 | Elf_Internal_Dyn dyn; | |
4875 | ||
4876 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4877 | ||
4878 | } | |
4879 | ||
4880 | } | |
0a1b45a2 | 4881 | return true; |
0f64bb02 CM |
4882 | } |
4883 | ||
4884 | /* Finish up dynamic symbol handling. We set the contents of various | |
4885 | dynamic sections here. */ | |
4886 | ||
0a1b45a2 | 4887 | static bool |
0f64bb02 | 4888 | bfin_finish_dynamic_symbol (bfd * output_bfd, |
2c3fc389 NC |
4889 | struct bfd_link_info *info, |
4890 | struct elf_link_hash_entry *h, | |
4891 | Elf_Internal_Sym * sym) | |
0f64bb02 | 4892 | { |
0f64bb02 CM |
4893 | if (h->got.offset != (bfd_vma) - 1) |
4894 | { | |
4895 | asection *sgot; | |
4896 | asection *srela; | |
4897 | Elf_Internal_Rela rela; | |
4898 | bfd_byte *loc; | |
4899 | ||
4900 | /* This symbol has an entry in the global offset table. | |
07d6d2b8 | 4901 | Set it up. */ |
0f64bb02 | 4902 | |
ce558b89 AM |
4903 | sgot = elf_hash_table (info)->sgot; |
4904 | srela = elf_hash_table (info)->srelgot; | |
0f64bb02 CM |
4905 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4906 | ||
4907 | rela.r_offset = (sgot->output_section->vma | |
4908 | + sgot->output_offset | |
4909 | + (h->got.offset & ~(bfd_vma) 1)); | |
4910 | ||
4911 | /* If this is a -Bsymbolic link, and the symbol is defined | |
07d6d2b8 AM |
4912 | locally, we just want to emit a RELATIVE reloc. Likewise if |
4913 | the symbol was forced to be local because of a version file. | |
4914 | The entry in the global offset table will already have been | |
4915 | initialized in the relocate_section function. */ | |
0e1862bb | 4916 | if (bfd_link_pic (info) |
0f64bb02 CM |
4917 | && (info->symbolic |
4918 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
4919 | { | |
4981a31d | 4920 | _bfd_error_handler (_("*** check this relocation %s"), __func__); |
cb88ce9f | 4921 | rela.r_info = ELF32_R_INFO (0, R_BFIN_PCREL24); |
0f64bb02 CM |
4922 | rela.r_addend = bfd_get_signed_32 (output_bfd, |
4923 | (sgot->contents | |
4924 | + | |
4925 | (h->got. | |
4926 | offset & ~(bfd_vma) 1))); | |
4927 | } | |
4928 | else | |
4929 | { | |
4930 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4931 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); | |
cb88ce9f | 4932 | rela.r_info = ELF32_R_INFO (h->dynindx, R_BFIN_GOT); |
0f64bb02 CM |
4933 | rela.r_addend = 0; |
4934 | } | |
4935 | ||
4936 | loc = srela->contents; | |
4937 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
4938 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
4939 | } | |
4940 | ||
4941 | if (h->needs_copy) | |
4942 | { | |
4943 | BFD_ASSERT (0); | |
4944 | } | |
4945 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5592d7ec | 4946 | if (strcmp (h->root.root.string, "__DYNAMIC") == 0 |
22edb2f1 | 4947 | || h == elf_hash_table (info)->hgot) |
0f64bb02 CM |
4948 | sym->st_shndx = SHN_ABS; |
4949 | ||
0a1b45a2 | 4950 | return true; |
0f64bb02 CM |
4951 | } |
4952 | ||
4953 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4954 | regular object. The current definition is in some section of the | |
4955 | dynamic object, but we're not including those sections. We have to | |
4956 | change the definition to something the rest of the link can | |
4957 | understand. */ | |
4958 | ||
0a1b45a2 | 4959 | static bool |
0f64bb02 | 4960 | bfin_adjust_dynamic_symbol (struct bfd_link_info *info, |
2c3fc389 | 4961 | struct elf_link_hash_entry *h) |
0f64bb02 CM |
4962 | { |
4963 | bfd *dynobj; | |
4964 | asection *s; | |
4965 | unsigned int power_of_two; | |
4966 | ||
4967 | dynobj = elf_hash_table (info)->dynobj; | |
4968 | ||
4969 | /* Make sure we know what is going on here. */ | |
4970 | BFD_ASSERT (dynobj != NULL | |
4971 | && (h->needs_plt | |
60d67dc8 | 4972 | || h->is_weakalias |
0f64bb02 CM |
4973 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); |
4974 | ||
4975 | /* If this is a function, put it in the procedure linkage table. We | |
4976 | will fill in the contents of the procedure linkage table later, | |
4977 | when we know the address of the .got section. */ | |
4978 | if (h->type == STT_FUNC || h->needs_plt) | |
4979 | { | |
4980 | BFD_ASSERT(0); | |
4981 | } | |
4982 | ||
4983 | /* If this is a weak symbol, and there is a real definition, the | |
4984 | processor independent code will have arranged for us to see the | |
4985 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 4986 | if (h->is_weakalias) |
0f64bb02 | 4987 | { |
60d67dc8 AM |
4988 | struct elf_link_hash_entry *def = weakdef (h); |
4989 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
4990 | h->root.u.def.section = def->root.u.def.section; | |
4991 | h->root.u.def.value = def->root.u.def.value; | |
0a1b45a2 | 4992 | return true; |
0f64bb02 CM |
4993 | } |
4994 | ||
4995 | /* This is a reference to a symbol defined by a dynamic object which | |
4996 | is not a function. */ | |
4997 | ||
4998 | /* If we are creating a shared library, we must presume that the | |
4999 | only references to the symbol are via the global offset table. | |
5000 | For such cases we need not do anything here; the relocations will | |
5001 | be handled correctly by relocate_section. */ | |
0e1862bb | 5002 | if (bfd_link_pic (info)) |
0a1b45a2 | 5003 | return true; |
0f64bb02 CM |
5004 | |
5005 | /* We must allocate the symbol in our .dynbss section, which will | |
5006 | become part of the .bss section of the executable. There will be | |
5007 | an entry for this symbol in the .dynsym section. The dynamic | |
5008 | object will contain position independent code, so all references | |
5009 | from the dynamic object to this symbol will go through the global | |
5010 | offset table. The dynamic linker will use the .dynsym entry to | |
5011 | determine the address it must put in the global offset table, so | |
5012 | both the dynamic object and the regular object will refer to the | |
5013 | same memory location for the variable. */ | |
5014 | ||
3d4d4302 | 5015 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
0f64bb02 CM |
5016 | BFD_ASSERT (s != NULL); |
5017 | ||
1b857aee NC |
5018 | #if 0 /* Bfin does not currently have a COPY reloc. */ |
5019 | /* We must generate a R_BFIN_COPY reloc to tell the dynamic linker to | |
0f64bb02 CM |
5020 | copy the initial value out of the dynamic object and into the |
5021 | runtime process image. We need to remember the offset into the | |
5022 | .rela.bss section we are going to use. */ | |
5023 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5024 | { | |
5025 | asection *srel; | |
5026 | ||
3d4d4302 | 5027 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
0f64bb02 CM |
5028 | BFD_ASSERT (srel != NULL); |
5029 | srel->size += sizeof (Elf32_External_Rela); | |
5030 | h->needs_copy = 1; | |
5031 | } | |
1b857aee NC |
5032 | #else |
5033 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5034 | { | |
4eca0228 | 5035 | _bfd_error_handler (_("the bfin target does not currently support the generation of copy relocations")); |
0a1b45a2 | 5036 | return false; |
1b857aee NC |
5037 | } |
5038 | #endif | |
0f64bb02 CM |
5039 | /* We need to figure out the alignment required for this symbol. I |
5040 | have no idea how ELF linkers handle this. */ | |
5041 | power_of_two = bfd_log2 (h->size); | |
5042 | if (power_of_two > 3) | |
5043 | power_of_two = 3; | |
5044 | ||
5045 | /* Apply the required alignment. */ | |
5046 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
fd361982 | 5047 | if (power_of_two > bfd_section_alignment (s)) |
0f64bb02 | 5048 | { |
fd361982 | 5049 | if (!bfd_set_section_alignment (s, power_of_two)) |
0a1b45a2 | 5050 | return false; |
0f64bb02 CM |
5051 | } |
5052 | ||
5053 | /* Define the symbol as being at this point in the section. */ | |
5054 | h->root.u.def.section = s; | |
5055 | h->root.u.def.value = s->size; | |
5056 | ||
5057 | /* Increment the section size to make room for the symbol. */ | |
5058 | s->size += h->size; | |
5059 | ||
0a1b45a2 | 5060 | return true; |
0f64bb02 CM |
5061 | } |
5062 | ||
5063 | /* The bfin linker needs to keep track of the number of relocs that it | |
5064 | decides to copy in check_relocs for each symbol. This is so that it | |
5065 | can discard PC relative relocs if it doesn't need them when linking | |
5066 | with -Bsymbolic. We store the information in a field extending the | |
5067 | regular ELF linker hash table. */ | |
5068 | ||
5069 | /* This structure keeps track of the number of PC relative relocs we have | |
5070 | copied for a given symbol. */ | |
5071 | ||
5072 | struct bfin_pcrel_relocs_copied | |
5073 | { | |
5074 | /* Next section. */ | |
5075 | struct bfin_pcrel_relocs_copied *next; | |
5076 | /* A section in dynobj. */ | |
5077 | asection *section; | |
5078 | /* Number of relocs copied in this section. */ | |
5079 | bfd_size_type count; | |
5080 | }; | |
5081 | ||
5082 | /* This function is called via elf_link_hash_traverse if we are | |
5083 | creating a shared object. In the -Bsymbolic case it discards the | |
5084 | space allocated to copy PC relative relocs against symbols which | |
5085 | are defined in regular objects. For the normal shared case, it | |
5086 | discards space for pc-relative relocs that have become local due to | |
5087 | symbol visibility changes. We allocated space for them in the | |
5088 | check_relocs routine, but we won't fill them in in the | |
5089 | relocate_section routine. | |
5090 | ||
5091 | We also check whether any of the remaining relocations apply | |
5092 | against a readonly section, and set the DF_TEXTREL flag in this | |
5093 | case. */ | |
5094 | ||
0a1b45a2 | 5095 | static bool |
2c3fc389 | 5096 | bfin_discard_copies (struct elf_link_hash_entry *h, void * inf) |
0f64bb02 CM |
5097 | { |
5098 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5099 | struct bfin_pcrel_relocs_copied *s; | |
5100 | ||
0f64bb02 CM |
5101 | if (!h->def_regular || (!info->symbolic && !h->forced_local)) |
5102 | { | |
5103 | if ((info->flags & DF_TEXTREL) == 0) | |
5104 | { | |
5105 | /* Look for relocations against read-only sections. */ | |
5106 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5107 | s != NULL; s = s->next) | |
5108 | if ((s->section->flags & SEC_READONLY) != 0) | |
5109 | { | |
5110 | info->flags |= DF_TEXTREL; | |
5111 | break; | |
5112 | } | |
5113 | } | |
5114 | ||
0a1b45a2 | 5115 | return true; |
0f64bb02 CM |
5116 | } |
5117 | ||
5118 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5119 | s != NULL; s = s->next) | |
5120 | s->section->size -= s->count * sizeof (Elf32_External_Rela); | |
5121 | ||
0a1b45a2 | 5122 | return true; |
0f64bb02 CM |
5123 | } |
5124 | ||
0a1b45a2 | 5125 | static bool |
0f64bb02 | 5126 | bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
2c3fc389 | 5127 | struct bfd_link_info *info) |
0f64bb02 CM |
5128 | { |
5129 | bfd *dynobj; | |
5130 | asection *s; | |
0a1b45a2 | 5131 | bool relocs; |
0f64bb02 CM |
5132 | |
5133 | dynobj = elf_hash_table (info)->dynobj; | |
5134 | BFD_ASSERT (dynobj != NULL); | |
5135 | ||
5136 | if (elf_hash_table (info)->dynamic_sections_created) | |
5137 | { | |
5138 | /* Set the contents of the .interp section to the interpreter. */ | |
9d45a7de | 5139 | if (bfd_link_executable (info) && !info->nointerp) |
0f64bb02 | 5140 | { |
3d4d4302 | 5141 | s = bfd_get_linker_section (dynobj, ".interp"); |
0f64bb02 CM |
5142 | BFD_ASSERT (s != NULL); |
5143 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5144 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5145 | } | |
5146 | } | |
5147 | else | |
5148 | { | |
5149 | /* We may have created entries in the .rela.got section. | |
07d6d2b8 AM |
5150 | However, if we are not creating the dynamic sections, we will |
5151 | not actually use these entries. Reset the size of .rela.got, | |
5152 | which will cause it to get stripped from the output file | |
5153 | below. */ | |
ce558b89 | 5154 | s = elf_hash_table (info)->srelgot; |
0f64bb02 CM |
5155 | if (s != NULL) |
5156 | s->size = 0; | |
5157 | } | |
5158 | ||
5159 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
5160 | PC relative relocs against symbols defined in a regular object. | |
5161 | For the normal shared case we discard the PC relative relocs | |
5162 | against symbols that have become local due to visibility changes. | |
5163 | We allocated space for them in the check_relocs routine, but we | |
5164 | will not fill them in in the relocate_section routine. */ | |
0e1862bb | 5165 | if (bfd_link_pic (info)) |
0f64bb02 | 5166 | elf_link_hash_traverse (elf_hash_table (info), |
2c3fc389 | 5167 | bfin_discard_copies, info); |
0f64bb02 CM |
5168 | |
5169 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
5170 | determined the sizes of the various dynamic sections. Allocate | |
5171 | memory for them. */ | |
0a1b45a2 | 5172 | relocs = false; |
0f64bb02 CM |
5173 | for (s = dynobj->sections; s != NULL; s = s->next) |
5174 | { | |
5175 | const char *name; | |
0a1b45a2 | 5176 | bool strip; |
0f64bb02 CM |
5177 | |
5178 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5179 | continue; | |
5180 | ||
5181 | /* It's OK to base decisions on the section name, because none | |
07d6d2b8 | 5182 | of the dynobj section names depend upon the input files. */ |
fd361982 | 5183 | name = bfd_section_name (s); |
0f64bb02 | 5184 | |
0a1b45a2 | 5185 | strip = false; |
0f64bb02 | 5186 | |
08dedd66 | 5187 | if (startswith (name, ".rela")) |
0f64bb02 CM |
5188 | { |
5189 | if (s->size == 0) | |
5190 | { | |
5191 | /* If we don't need this section, strip it from the | |
07d6d2b8 AM |
5192 | output file. This is mostly to handle .rela.bss and |
5193 | .rela.plt. We must create both sections in | |
5194 | create_dynamic_sections, because they must be created | |
5195 | before the linker maps input sections to output | |
5196 | sections. The linker does that before | |
5197 | adjust_dynamic_symbol is called, and it is that | |
5198 | function which decides whether anything needs to go | |
5199 | into these sections. */ | |
0a1b45a2 | 5200 | strip = true; |
0f64bb02 CM |
5201 | } |
5202 | else | |
5203 | { | |
0a1b45a2 | 5204 | relocs = true; |
0f64bb02 CM |
5205 | |
5206 | /* We use the reloc_count field as a counter if we need | |
07d6d2b8 | 5207 | to copy relocs into the output file. */ |
0f64bb02 CM |
5208 | s->reloc_count = 0; |
5209 | } | |
5210 | } | |
08dedd66 | 5211 | else if (! startswith (name, ".got")) |
0f64bb02 CM |
5212 | { |
5213 | /* It's not one of our sections, so don't allocate space. */ | |
5214 | continue; | |
5215 | } | |
5216 | ||
5217 | if (strip) | |
5218 | { | |
5219 | s->flags |= SEC_EXCLUDE; | |
5220 | continue; | |
5221 | } | |
5222 | ||
5223 | /* Allocate memory for the section contents. */ | |
5224 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. | |
07d6d2b8 AM |
5225 | Unused entries should be reclaimed before the section's contents |
5226 | are written out, but at the moment this does not happen. Thus in | |
5227 | order to prevent writing out garbage, we initialise the section's | |
5228 | contents to zero. */ | |
0f64bb02 CM |
5229 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
5230 | if (s->contents == NULL && s->size != 0) | |
0a1b45a2 | 5231 | return false; |
0f64bb02 CM |
5232 | } |
5233 | ||
5234 | if (elf_hash_table (info)->dynamic_sections_created) | |
5235 | { | |
5236 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
5237 | values later, in bfin_finish_dynamic_sections, but we |
5238 | must add the entries now so that we get the correct size for | |
5239 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5240 | dynamic linker and used by the debugger. */ | |
0f64bb02 CM |
5241 | #define add_dynamic_entry(TAG, VAL) \ |
5242 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
5243 | ||
0e1862bb | 5244 | if (!bfd_link_pic (info)) |
0f64bb02 CM |
5245 | { |
5246 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
0a1b45a2 | 5247 | return false; |
0f64bb02 CM |
5248 | } |
5249 | ||
5250 | ||
5251 | if (relocs) | |
5252 | { | |
5253 | if (!add_dynamic_entry (DT_RELA, 0) | |
5254 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5255 | || !add_dynamic_entry (DT_RELAENT, | |
5256 | sizeof (Elf32_External_Rela))) | |
0a1b45a2 | 5257 | return false; |
0f64bb02 CM |
5258 | } |
5259 | ||
5260 | if ((info->flags & DF_TEXTREL) != 0) | |
5261 | { | |
5262 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
0a1b45a2 | 5263 | return false; |
0f64bb02 CM |
5264 | } |
5265 | } | |
5266 | #undef add_dynamic_entry | |
5267 | ||
0a1b45a2 | 5268 | return true; |
0f64bb02 | 5269 | } |
48d502e1 | 5270 | \f |
0f64bb02 CM |
5271 | /* Given a .data section and a .emreloc in-memory section, store |
5272 | relocation information into the .emreloc section which can be | |
5273 | used at runtime to relocate the section. This is called by the | |
5274 | linker when the --embedded-relocs switch is used. This is called | |
5275 | after the add_symbols entry point has been called for all the | |
5276 | objects, and before the final_link entry point is called. */ | |
5277 | ||
0a1b45a2 | 5278 | bool |
2c3fc389 NC |
5279 | bfd_bfin_elf32_create_embedded_relocs (bfd *abfd, |
5280 | struct bfd_link_info *info, | |
5281 | asection *datasec, | |
5282 | asection *relsec, | |
5283 | char **errmsg) | |
0f64bb02 CM |
5284 | { |
5285 | Elf_Internal_Shdr *symtab_hdr; | |
5286 | Elf_Internal_Sym *isymbuf = NULL; | |
5287 | Elf_Internal_Rela *internal_relocs = NULL; | |
5288 | Elf_Internal_Rela *irel, *irelend; | |
5289 | bfd_byte *p; | |
5290 | bfd_size_type amt; | |
5291 | ||
0e1862bb | 5292 | BFD_ASSERT (! bfd_link_relocatable (info)); |
0f64bb02 CM |
5293 | |
5294 | *errmsg = NULL; | |
5295 | ||
5296 | if (datasec->reloc_count == 0) | |
0a1b45a2 | 5297 | return true; |
0f64bb02 CM |
5298 | |
5299 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5300 | ||
5301 | /* Get a copy of the native relocations. */ | |
5302 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 5303 | (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL, |
0f64bb02 CM |
5304 | info->keep_memory)); |
5305 | if (internal_relocs == NULL) | |
5306 | goto error_return; | |
5307 | ||
5308 | amt = (bfd_size_type) datasec->reloc_count * 12; | |
5309 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
5310 | if (relsec->contents == NULL) | |
5311 | goto error_return; | |
5312 | ||
5313 | p = relsec->contents; | |
5314 | ||
5315 | irelend = internal_relocs + datasec->reloc_count; | |
5316 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
5317 | { | |
5318 | asection *targetsec; | |
5319 | ||
5320 | /* We are going to write a four byte longword into the runtime | |
5321 | reloc section. The longword will be the address in the data | |
5322 | section which must be relocated. It is followed by the name | |
5323 | of the target section NUL-padded or truncated to 8 | |
5324 | characters. */ | |
5325 | ||
5326 | /* We can only relocate absolute longword relocs at run time. */ | |
cb88ce9f | 5327 | if (ELF32_R_TYPE (irel->r_info) != (int) R_BFIN_BYTE4_DATA) |
0f64bb02 | 5328 | { |
0aa13fee | 5329 | *errmsg = _("unsupported relocation type"); |
0f64bb02 CM |
5330 | bfd_set_error (bfd_error_bad_value); |
5331 | goto error_return; | |
5332 | } | |
5333 | ||
5334 | /* Get the target section referred to by the reloc. */ | |
5335 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5336 | { | |
5337 | /* A local symbol. */ | |
5338 | Elf_Internal_Sym *isym; | |
5339 | ||
5340 | /* Read this BFD's local symbols if we haven't done so already. */ | |
5341 | if (isymbuf == NULL) | |
5342 | { | |
5343 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5344 | if (isymbuf == NULL) | |
5345 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5346 | symtab_hdr->sh_info, 0, | |
5347 | NULL, NULL, NULL); | |
5348 | if (isymbuf == NULL) | |
5349 | goto error_return; | |
5350 | } | |
5351 | ||
5352 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5353 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5354 | } | |
5355 | else | |
5356 | { | |
5357 | unsigned long indx; | |
5358 | struct elf_link_hash_entry *h; | |
5359 | ||
5360 | /* An external symbol. */ | |
5361 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5362 | h = elf_sym_hashes (abfd)[indx]; | |
5363 | BFD_ASSERT (h != NULL); | |
5364 | if (h->root.type == bfd_link_hash_defined | |
5365 | || h->root.type == bfd_link_hash_defweak) | |
5366 | targetsec = h->root.u.def.section; | |
5367 | else | |
5368 | targetsec = NULL; | |
5369 | } | |
5370 | ||
5371 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
5372 | memset (p + 4, 0, 8); | |
5373 | if (targetsec != NULL) | |
9ba4c445 | 5374 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0f64bb02 CM |
5375 | } |
5376 | ||
c9594989 | 5377 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
0f64bb02 | 5378 | free (isymbuf); |
c9594989 | 5379 | if (elf_section_data (datasec)->relocs != internal_relocs) |
0f64bb02 | 5380 | free (internal_relocs); |
0a1b45a2 | 5381 | return true; |
0f64bb02 | 5382 | |
dc1e8a47 | 5383 | error_return: |
c9594989 | 5384 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
0f64bb02 | 5385 | free (isymbuf); |
c9594989 | 5386 | if (elf_section_data (datasec)->relocs != internal_relocs) |
0f64bb02 | 5387 | free (internal_relocs); |
0a1b45a2 | 5388 | return false; |
0f64bb02 | 5389 | } |
b0a0b978 JZ |
5390 | |
5391 | struct bfd_elf_special_section const elf32_bfin_special_sections[] = | |
5392 | { | |
5393 | { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
5394 | { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
07d6d2b8 | 5395 | { NULL, 0, 0, 0, 0 } |
b0a0b978 JZ |
5396 | }; |
5397 | ||
48d502e1 | 5398 | \f |
6d00b590 | 5399 | #define TARGET_LITTLE_SYM bfin_elf32_vec |
0f64bb02 CM |
5400 | #define TARGET_LITTLE_NAME "elf32-bfin" |
5401 | #define ELF_ARCH bfd_arch_bfin | |
ae95ffa6 | 5402 | #define ELF_TARGET_ID BFIN_ELF_DATA |
3b55e94a | 5403 | #define ELF_MACHINE_CODE EM_BLACKFIN |
0f64bb02 CM |
5404 | #define ELF_MAXPAGESIZE 0x1000 |
5405 | #define elf_symbol_leading_char '_' | |
5406 | ||
5407 | #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup | |
157090f7 AM |
5408 | #define bfd_elf32_bfd_reloc_name_lookup \ |
5409 | bfin_bfd_reloc_name_lookup | |
0f64bb02 | 5410 | #define elf_info_to_howto bfin_info_to_howto |
f3185997 | 5411 | #define elf_info_to_howto_rel NULL |
48d502e1 | 5412 | #define elf_backend_object_p elf32_bfin_object_p |
0f64bb02 CM |
5413 | |
5414 | #define bfd_elf32_bfd_is_local_label_name \ | |
07d6d2b8 | 5415 | bfin_is_local_label_name |
0f64bb02 CM |
5416 | |
5417 | #define elf_backend_create_dynamic_sections \ | |
07d6d2b8 | 5418 | _bfd_elf_create_dynamic_sections |
0f64bb02 | 5419 | #define bfd_elf32_bfd_link_hash_table_create \ |
07d6d2b8 AM |
5420 | bfin_link_hash_table_create |
5421 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link | |
0f64bb02 | 5422 | |
07d6d2b8 | 5423 | #define elf_backend_check_relocs bfin_check_relocs |
0f64bb02 | 5424 | #define elf_backend_adjust_dynamic_symbol \ |
07d6d2b8 | 5425 | bfin_adjust_dynamic_symbol |
0f64bb02 | 5426 | #define elf_backend_size_dynamic_sections \ |
07d6d2b8 AM |
5427 | bfin_size_dynamic_sections |
5428 | #define elf_backend_relocate_section bfin_relocate_section | |
0f64bb02 | 5429 | #define elf_backend_finish_dynamic_symbol \ |
07d6d2b8 | 5430 | bfin_finish_dynamic_symbol |
0f64bb02 | 5431 | #define elf_backend_finish_dynamic_sections \ |
07d6d2b8 AM |
5432 | bfin_finish_dynamic_sections |
5433 | #define elf_backend_gc_mark_hook bfin_gc_mark_hook | |
0f64bb02 | 5434 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
07d6d2b8 | 5435 | elf32_bfin_merge_private_bfd_data |
0f64bb02 | 5436 | #define bfd_elf32_bfd_set_private_flags \ |
07d6d2b8 | 5437 | elf32_bfin_set_private_flags |
0f64bb02 | 5438 | #define bfd_elf32_bfd_print_private_bfd_data \ |
07d6d2b8 | 5439 | elf32_bfin_print_private_bfd_data |
781303ce | 5440 | #define elf_backend_final_write_processing \ |
07d6d2b8 AM |
5441 | elf32_bfin_final_write_processing |
5442 | #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class | |
04c3a755 | 5443 | #define elf_backend_stack_align 8 |
0f64bb02 | 5444 | #define elf_backend_can_gc_sections 1 |
b0a0b978 | 5445 | #define elf_backend_special_sections elf32_bfin_special_sections |
0f64bb02 CM |
5446 | #define elf_backend_can_refcount 1 |
5447 | #define elf_backend_want_got_plt 0 | |
5448 | #define elf_backend_plt_readonly 1 | |
5449 | #define elf_backend_want_plt_sym 0 | |
07d6d2b8 AM |
5450 | #define elf_backend_got_header_size 12 |
5451 | #define elf_backend_rela_normal 1 | |
0f64bb02 | 5452 | |
48d502e1 BS |
5453 | #include "elf32-target.h" |
5454 | ||
5455 | #undef TARGET_LITTLE_SYM | |
07d6d2b8 | 5456 | #define TARGET_LITTLE_SYM bfin_elf32_fdpic_vec |
48d502e1 BS |
5457 | #undef TARGET_LITTLE_NAME |
5458 | #define TARGET_LITTLE_NAME "elf32-bfinfdpic" | |
5459 | #undef elf32_bed | |
07d6d2b8 | 5460 | #define elf32_bed elf32_bfinfdpic_bed |
48d502e1 | 5461 | |
48d502e1 | 5462 | #undef elf_backend_got_header_size |
07d6d2b8 | 5463 | #define elf_backend_got_header_size 0 |
48d502e1 BS |
5464 | |
5465 | #undef elf_backend_relocate_section | |
07d6d2b8 | 5466 | #define elf_backend_relocate_section bfinfdpic_relocate_section |
48d502e1 | 5467 | #undef elf_backend_check_relocs |
07d6d2b8 | 5468 | #define elf_backend_check_relocs bfinfdpic_check_relocs |
48d502e1 BS |
5469 | |
5470 | #undef bfd_elf32_bfd_link_hash_table_create | |
5471 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5472 | bfinfdpic_elf_link_hash_table_create | |
5473 | #undef elf_backend_always_size_sections | |
5474 | #define elf_backend_always_size_sections \ | |
5475 | elf32_bfinfdpic_always_size_sections | |
48d502e1 BS |
5476 | |
5477 | #undef elf_backend_create_dynamic_sections | |
5478 | #define elf_backend_create_dynamic_sections \ | |
5479 | elf32_bfinfdpic_create_dynamic_sections | |
5480 | #undef elf_backend_adjust_dynamic_symbol | |
5481 | #define elf_backend_adjust_dynamic_symbol \ | |
5482 | elf32_bfinfdpic_adjust_dynamic_symbol | |
5483 | #undef elf_backend_size_dynamic_sections | |
5484 | #define elf_backend_size_dynamic_sections \ | |
5485 | elf32_bfinfdpic_size_dynamic_sections | |
5486 | #undef elf_backend_finish_dynamic_symbol | |
5487 | #define elf_backend_finish_dynamic_symbol \ | |
5488 | elf32_bfinfdpic_finish_dynamic_symbol | |
5489 | #undef elf_backend_finish_dynamic_sections | |
5490 | #define elf_backend_finish_dynamic_sections \ | |
5491 | elf32_bfinfdpic_finish_dynamic_sections | |
5492 | ||
6a9adeca BS |
5493 | #undef elf_backend_discard_info |
5494 | #define elf_backend_discard_info \ | |
5495 | bfinfdpic_elf_discard_info | |
48d502e1 BS |
5496 | #undef elf_backend_can_make_relative_eh_frame |
5497 | #define elf_backend_can_make_relative_eh_frame \ | |
5498 | bfinfdpic_elf_use_relative_eh_frame | |
5499 | #undef elf_backend_can_make_lsda_relative_eh_frame | |
5500 | #define elf_backend_can_make_lsda_relative_eh_frame \ | |
5501 | bfinfdpic_elf_use_relative_eh_frame | |
5502 | #undef elf_backend_encode_eh_address | |
5503 | #define elf_backend_encode_eh_address \ | |
5504 | bfinfdpic_elf_encode_eh_address | |
5505 | ||
5506 | #undef elf_backend_may_use_rel_p | |
07d6d2b8 | 5507 | #define elf_backend_may_use_rel_p 1 |
48d502e1 | 5508 | #undef elf_backend_may_use_rela_p |
07d6d2b8 | 5509 | #define elf_backend_may_use_rela_p 1 |
48d502e1 BS |
5510 | /* We use REL for dynamic relocations only. */ |
5511 | #undef elf_backend_default_use_rela_p | |
07d6d2b8 | 5512 | #define elf_backend_default_use_rela_p 1 |
48d502e1 BS |
5513 | |
5514 | #undef elf_backend_omit_section_dynsym | |
5515 | #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym | |
0f64bb02 CM |
5516 | |
5517 | #include "elf32-target.h" |