Commit | Line | Data |
---|---|---|
3b55e94a | 1 | /* ADI Blackfin BFD support for 32-bit ELF. |
82704155 | 2 | Copyright (C) 2005-2019 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; | |
61 | bfd_boolean relocatable = (output_bfd != NULL); | |
62 | ||
63 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
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 CM |
157 | asection *output_section; |
158 | bfd_boolean relocatable = (output_bfd != NULL); | |
159 | ||
3b55e94a BS |
160 | /* Is the address of the relocation really within the section? */ |
161 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
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; | |
229 | bfd_boolean relocatable = (output_bfd != NULL); | |
230 | ||
231 | /* Is the address of the relocation really within the section? */ | |
232 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
233 | return bfd_reloc_outofrange; | |
234 | ||
3b55e94a BS |
235 | if (bfd_is_und_section (symbol->section) |
236 | && (symbol->flags & BSF_WEAK) == 0 | |
237 | && !relocatable) | |
238 | return bfd_reloc_undefined; | |
0f64bb02 | 239 | |
3b55e94a BS |
240 | output_section = symbol->section->output_section; |
241 | relocation = symbol->value; | |
242 | /* Convert input-section-relative symbol value to absolute. */ | |
243 | if (relocatable) | |
244 | output_base = 0; | |
0f64bb02 | 245 | else |
3b55e94a BS |
246 | output_base = output_section->vma; |
247 | ||
248 | if ((symbol->name | |
249 | && symbol->section->name | |
250 | && !strcmp (symbol->name, symbol->section->name)) | |
251 | || !relocatable) | |
0f64bb02 | 252 | { |
3b55e94a | 253 | relocation += output_base + symbol->section->output_offset; |
0f64bb02 CM |
254 | } |
255 | ||
3b55e94a BS |
256 | relocation += reloc_entry->addend; |
257 | ||
0f64bb02 | 258 | if (relocatable) |
3b55e94a | 259 | { |
0f64bb02 CM |
260 | /* This output will be relocatable ... like ld -r. */ |
261 | reloc_entry->address += input_section->output_offset; | |
262 | reloc_entry->addend += symbol->section->output_offset; | |
263 | } | |
264 | else | |
265 | { | |
266 | reloc_entry->addend = 0; | |
267 | } | |
268 | ||
269 | /* Here the variable relocation holds the final address of the | |
270 | symbol we are relocating against, plus any addend. */ | |
271 | x = relocation & 0xFFFF0000; | |
272 | x >>=16; | |
273 | bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2); | |
3b55e94a | 274 | |
0f64bb02 CM |
275 | x = relocation & 0x0000FFFF; |
276 | bfd_put_16 (abfd, x, (unsigned char *) data + addr); | |
277 | return bfd_reloc_ok; | |
278 | } | |
279 | ||
280 | /* bfin_bfd_reloc handles the blackfin arithmetic relocations. | |
281 | Use this instead of bfd_perform_relocation. */ | |
282 | static bfd_reloc_status_type | |
283 | bfin_bfd_reloc (bfd *abfd, | |
284 | arelent *reloc_entry, | |
4b24dd1a AM |
285 | asymbol *symbol, |
286 | void * data, | |
287 | asection *input_section, | |
288 | bfd *output_bfd, | |
289 | char **error_message ATTRIBUTE_UNUSED) | |
0f64bb02 CM |
290 | { |
291 | bfd_vma relocation; | |
292 | bfd_size_type addr = reloc_entry->address; | |
293 | bfd_vma output_base = 0; | |
294 | reloc_howto_type *howto = reloc_entry->howto; | |
295 | asection *output_section; | |
296 | bfd_boolean relocatable = (output_bfd != NULL); | |
297 | ||
298 | /* Is the address of the relocation really within the section? */ | |
299 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
300 | return bfd_reloc_outofrange; | |
301 | ||
3b55e94a BS |
302 | if (bfd_is_und_section (symbol->section) |
303 | && (symbol->flags & BSF_WEAK) == 0 | |
304 | && !relocatable) | |
305 | return bfd_reloc_undefined; | |
306 | ||
307 | /* Get symbol value. (Common symbols are special.) */ | |
308 | if (bfd_is_com_section (symbol->section)) | |
309 | relocation = 0; | |
0f64bb02 | 310 | else |
3b55e94a BS |
311 | relocation = symbol->value; |
312 | ||
313 | output_section = symbol->section->output_section; | |
314 | ||
315 | /* Convert input-section-relative symbol value to absolute. */ | |
316 | if (relocatable) | |
317 | output_base = 0; | |
318 | else | |
319 | output_base = output_section->vma; | |
320 | ||
321 | if (!relocatable || !strcmp (symbol->name, symbol->section->name)) | |
322 | relocation += output_base + symbol->section->output_offset; | |
323 | ||
324 | if (!relocatable && !strcmp (symbol->name, symbol->section->name)) | |
0f64bb02 | 325 | { |
3b55e94a BS |
326 | /* Add in supplied addend. */ |
327 | relocation += reloc_entry->addend; | |
0f64bb02 | 328 | } |
3b55e94a | 329 | |
0f64bb02 CM |
330 | /* Here the variable relocation holds the final address of the |
331 | symbol we are relocating against, plus any addend. */ | |
332 | ||
535b785f | 333 | if (howto->pc_relative) |
0f64bb02 CM |
334 | { |
335 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
336 | ||
535b785f | 337 | if (howto->pcrel_offset) |
07d6d2b8 | 338 | relocation -= reloc_entry->address; |
0f64bb02 CM |
339 | } |
340 | ||
341 | if (relocatable) | |
342 | { | |
343 | reloc_entry->address += input_section->output_offset; | |
344 | reloc_entry->addend += symbol->section->output_offset; | |
345 | } | |
346 | ||
347 | if (howto->complain_on_overflow != complain_overflow_dont) | |
348 | { | |
349 | bfd_reloc_status_type status; | |
350 | ||
3b55e94a | 351 | status = bfd_check_overflow (howto->complain_on_overflow, |
07d6d2b8 AM |
352 | howto->bitsize, |
353 | howto->rightshift, | |
354 | bfd_arch_bits_per_address(abfd), | |
355 | relocation); | |
0f64bb02 CM |
356 | if (status != bfd_reloc_ok) |
357 | return status; | |
358 | } | |
3b55e94a | 359 | |
0f64bb02 CM |
360 | /* If rightshift is 1 and the number odd, return error. */ |
361 | if (howto->rightshift && (relocation & 0x01)) | |
362 | { | |
4eca0228 | 363 | _bfd_error_handler (_("relocation should be even number")); |
0f64bb02 CM |
364 | return bfd_reloc_overflow; |
365 | } | |
366 | ||
367 | relocation >>= (bfd_vma) howto->rightshift; | |
368 | ||
369 | /* Shift everything up to where it's going to be used. */ | |
370 | ||
371 | relocation <<= (bfd_vma) howto->bitpos; | |
372 | ||
3b55e94a | 373 | #define DOIT(x) \ |
0f64bb02 CM |
374 | x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask)) |
375 | ||
376 | /* handle 8 and 16 bit relocations here. */ | |
377 | switch (howto->size) | |
378 | { | |
379 | case 0: | |
380 | { | |
07d6d2b8 AM |
381 | char x = bfd_get_8 (abfd, (char *) data + addr); |
382 | DOIT (x); | |
383 | bfd_put_8 (abfd, x, (unsigned char *) data + addr); | |
0f64bb02 CM |
384 | } |
385 | break; | |
386 | ||
387 | case 1: | |
388 | { | |
07d6d2b8 AM |
389 | unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr); |
390 | DOIT (x); | |
391 | bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr); | |
0f64bb02 CM |
392 | } |
393 | break; | |
394 | ||
395 | default: | |
396 | return bfd_reloc_other; | |
397 | } | |
398 | ||
3b55e94a | 399 | return bfd_reloc_ok; |
0f64bb02 CM |
400 | } |
401 | ||
0f64bb02 CM |
402 | /* HOWTO Table for blackfin. |
403 | Blackfin relocations are fairly complicated. | |
404 | Some of the salient features are | |
405 | a. Even numbered offsets. A number of (not all) relocations are | |
406 | even numbered. This means that the rightmost bit is not stored. | |
407 | Needs to right shift by 1 and check to see if value is not odd | |
408 | b. A relocation can be an expression. An expression takes on | |
409 | a variety of relocations arranged in a stack. | |
410 | As a result, we cannot use the standard generic function as special | |
411 | function. We will have our own, which is very similar to the standard | |
412 | generic function except that it understands how to get the value from | |
413 | the relocation stack. . */ | |
414 | ||
415 | #define BFIN_RELOC_MIN 0 | |
48d502e1 | 416 | #define BFIN_RELOC_MAX 0x21 |
0f64bb02 CM |
417 | #define BFIN_GNUEXT_RELOC_MIN 0x40 |
418 | #define BFIN_GNUEXT_RELOC_MAX 0x43 | |
419 | #define BFIN_ARELOC_MIN 0xE0 | |
420 | #define BFIN_ARELOC_MAX 0xF3 | |
421 | ||
422 | static reloc_howto_type bfin_howto_table [] = | |
423 | { | |
424 | /* This reloc does nothing. . */ | |
cb88ce9f | 425 | HOWTO (R_BFIN_UNUSED0, /* type. */ |
0f64bb02 | 426 | 0, /* rightshift. */ |
6346d5ca AM |
427 | 3, /* size (0 = byte, 1 = short, 2 = long). */ |
428 | 0, /* bitsize. */ | |
0f64bb02 CM |
429 | FALSE, /* pc_relative. */ |
430 | 0, /* bitpos. */ | |
6346d5ca | 431 | complain_overflow_dont, /* complain_on_overflow. */ |
0f64bb02 | 432 | bfd_elf_generic_reloc, /* special_function. */ |
cb88ce9f | 433 | "R_BFIN_UNUSED0", /* name. */ |
0f64bb02 CM |
434 | FALSE, /* partial_inplace. */ |
435 | 0, /* src_mask. */ | |
436 | 0, /* dst_mask. */ | |
437 | FALSE), /* pcrel_offset. */ | |
438 | ||
cb88ce9f | 439 | HOWTO (R_BFIN_PCREL5M2, /* type. */ |
0f64bb02 CM |
440 | 1, /* rightshift. */ |
441 | 1, /* size (0 = byte, 1 = short, 2 = long).. */ | |
442 | 4, /* bitsize. */ | |
443 | TRUE, /* pc_relative. */ | |
444 | 0, /* bitpos. */ | |
445 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
446 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 447 | "R_BFIN_PCREL5M2", /* name. */ |
0f64bb02 | 448 | FALSE, /* partial_inplace. */ |
f4707595 | 449 | 0, /* src_mask. */ |
0f64bb02 CM |
450 | 0x0000000F, /* dst_mask. */ |
451 | FALSE), /* pcrel_offset. */ | |
452 | ||
cb88ce9f | 453 | HOWTO (R_BFIN_UNUSED1, /* type. */ |
0f64bb02 | 454 | 0, /* rightshift. */ |
6346d5ca AM |
455 | 3, /* size (0 = byte, 1 = short, 2 = long). */ |
456 | 0, /* bitsize. */ | |
0f64bb02 CM |
457 | FALSE, /* pc_relative. */ |
458 | 0, /* bitpos. */ | |
6346d5ca | 459 | complain_overflow_dont, /* complain_on_overflow. */ |
0f64bb02 | 460 | bfd_elf_generic_reloc, /* special_function. */ |
cb88ce9f | 461 | "R_BFIN_UNUSED1", /* name. */ |
0f64bb02 CM |
462 | FALSE, /* partial_inplace. */ |
463 | 0, /* src_mask. */ | |
464 | 0, /* dst_mask. */ | |
465 | FALSE), /* pcrel_offset. */ | |
466 | ||
cb88ce9f | 467 | HOWTO (R_BFIN_PCREL10, /* type. */ |
0f64bb02 CM |
468 | 1, /* rightshift. */ |
469 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
470 | 10, /* bitsize. */ | |
471 | TRUE, /* pc_relative. */ | |
472 | 0, /* bitpos. */ | |
473 | complain_overflow_signed, /* complain_on_overflow. */ | |
474 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 475 | "R_BFIN_PCREL10", /* name. */ |
0f64bb02 | 476 | FALSE, /* partial_inplace. */ |
f4707595 | 477 | 0, /* src_mask. */ |
0f64bb02 CM |
478 | 0x000003FF, /* dst_mask. */ |
479 | TRUE), /* pcrel_offset. */ | |
3b55e94a | 480 | |
cb88ce9f | 481 | HOWTO (R_BFIN_PCREL12_JUMP, /* type. */ |
0f64bb02 CM |
482 | 1, /* rightshift. */ |
483 | /* the offset is actually 13 bit | |
484 | aligned on a word boundary so | |
485 | only 12 bits have to be used. | |
486 | Right shift the rightmost bit.. */ | |
487 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
488 | 12, /* bitsize. */ | |
489 | TRUE, /* pc_relative. */ | |
490 | 0, /* bitpos. */ | |
491 | complain_overflow_signed, /* complain_on_overflow. */ | |
492 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 493 | "R_BFIN_PCREL12_JUMP", /* name. */ |
0f64bb02 | 494 | FALSE, /* partial_inplace. */ |
f4707595 | 495 | 0, /* src_mask. */ |
0f64bb02 CM |
496 | 0x0FFF, /* dst_mask. */ |
497 | TRUE), /* pcrel_offset. */ | |
498 | ||
cb88ce9f | 499 | HOWTO (R_BFIN_RIMM16, /* type. */ |
0f64bb02 CM |
500 | 0, /* rightshift. */ |
501 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
502 | 16, /* bitsize. */ | |
503 | FALSE, /* pc_relative. */ | |
504 | 0, /* bitpos. */ | |
505 | complain_overflow_signed, /* complain_on_overflow. */ | |
506 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 507 | "R_BFIN_RIMM16", /* name. */ |
0f64bb02 | 508 | FALSE, /* partial_inplace. */ |
f4707595 | 509 | 0, /* src_mask. */ |
0f64bb02 CM |
510 | 0x0000FFFF, /* dst_mask. */ |
511 | TRUE), /* pcrel_offset. */ | |
512 | ||
cb88ce9f | 513 | HOWTO (R_BFIN_LUIMM16, /* type. */ |
0f64bb02 CM |
514 | 0, /* rightshift. */ |
515 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
516 | 16, /* bitsize. */ | |
517 | FALSE, /* pc_relative. */ | |
518 | 0, /* bitpos. */ | |
519 | complain_overflow_dont, /* complain_on_overflow. */ | |
520 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 521 | "R_BFIN_LUIMM16", /* name. */ |
0f64bb02 | 522 | FALSE, /* partial_inplace. */ |
f4707595 | 523 | 0, /* src_mask. */ |
0f64bb02 CM |
524 | 0x0000FFFF, /* dst_mask. */ |
525 | TRUE), /* pcrel_offset. */ | |
3b55e94a | 526 | |
cb88ce9f | 527 | HOWTO (R_BFIN_HUIMM16, /* type. */ |
0f64bb02 CM |
528 | 16, /* rightshift. */ |
529 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
530 | 16, /* bitsize. */ | |
531 | FALSE, /* pc_relative. */ | |
532 | 0, /* bitpos. */ | |
533 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
534 | bfin_imm16_reloc, /* special_function. */ | |
cb88ce9f | 535 | "R_BFIN_HUIMM16", /* name. */ |
0f64bb02 | 536 | FALSE, /* partial_inplace. */ |
f4707595 | 537 | 0, /* src_mask. */ |
0f64bb02 CM |
538 | 0x0000FFFF, /* dst_mask. */ |
539 | TRUE), /* pcrel_offset. */ | |
540 | ||
cb88ce9f | 541 | HOWTO (R_BFIN_PCREL12_JUMP_S, /* type. */ |
0f64bb02 CM |
542 | 1, /* rightshift. */ |
543 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
544 | 12, /* bitsize. */ | |
545 | TRUE, /* pc_relative. */ | |
546 | 0, /* bitpos. */ | |
547 | complain_overflow_signed, /* complain_on_overflow. */ | |
548 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 549 | "R_BFIN_PCREL12_JUMP_S", /* name. */ |
0f64bb02 | 550 | FALSE, /* partial_inplace. */ |
f4707595 | 551 | 0, /* src_mask. */ |
0f64bb02 CM |
552 | 0x00000FFF, /* dst_mask. */ |
553 | TRUE), /* pcrel_offset. */ | |
554 | ||
cb88ce9f | 555 | HOWTO (R_BFIN_PCREL24_JUMP_X, /* type. */ |
07d6d2b8 AM |
556 | 1, /* rightshift. */ |
557 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
558 | 24, /* bitsize. */ | |
559 | TRUE, /* pc_relative. */ | |
560 | 0, /* bitpos. */ | |
561 | complain_overflow_signed, /* complain_on_overflow. */ | |
562 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 563 | "R_BFIN_PCREL24_JUMP_X", /* name. */ |
0f64bb02 | 564 | FALSE, /* partial_inplace. */ |
f4707595 | 565 | 0, /* src_mask. */ |
0f64bb02 CM |
566 | 0x00FFFFFF, /* dst_mask. */ |
567 | TRUE), /* pcrel_offset. */ | |
568 | ||
cb88ce9f | 569 | HOWTO (R_BFIN_PCREL24, /* type. */ |
0f64bb02 CM |
570 | 1, /* rightshift. */ |
571 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
572 | 24, /* bitsize. */ | |
573 | TRUE, /* pc_relative. */ | |
574 | 0, /* bitpos. */ | |
575 | complain_overflow_signed, /* complain_on_overflow. */ | |
576 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 577 | "R_BFIN_PCREL24", /* name. */ |
0f64bb02 | 578 | FALSE, /* partial_inplace. */ |
f4707595 | 579 | 0, /* src_mask. */ |
0f64bb02 CM |
580 | 0x00FFFFFF, /* dst_mask. */ |
581 | TRUE), /* pcrel_offset. */ | |
582 | ||
cb88ce9f | 583 | HOWTO (R_BFIN_UNUSEDB, /* type. */ |
0f64bb02 | 584 | 0, /* rightshift. */ |
6346d5ca AM |
585 | 3, /* size (0 = byte, 1 = short, 2 = long). */ |
586 | 0, /* bitsize. */ | |
0f64bb02 CM |
587 | FALSE, /* pc_relative. */ |
588 | 0, /* bitpos. */ | |
589 | complain_overflow_dont, /* complain_on_overflow. */ | |
590 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 591 | "R_BFIN_UNUSEDB", /* name. */ |
0f64bb02 CM |
592 | FALSE, /* partial_inplace. */ |
593 | 0, /* src_mask. */ | |
594 | 0, /* dst_mask. */ | |
595 | FALSE), /* pcrel_offset. */ | |
596 | ||
cb88ce9f | 597 | HOWTO (R_BFIN_UNUSEDC, /* type. */ |
0f64bb02 | 598 | 0, /* rightshift. */ |
6346d5ca AM |
599 | 3, /* size (0 = byte, 1 = short, 2 = long). */ |
600 | 0, /* bitsize. */ | |
0f64bb02 CM |
601 | FALSE, /* pc_relative. */ |
602 | 0, /* bitpos. */ | |
603 | complain_overflow_dont, /* complain_on_overflow. */ | |
604 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 605 | "R_BFIN_UNUSEDC", /* name. */ |
0f64bb02 CM |
606 | FALSE, /* partial_inplace. */ |
607 | 0, /* src_mask. */ | |
608 | 0, /* dst_mask. */ | |
609 | FALSE), /* pcrel_offset. */ | |
610 | ||
cb88ce9f | 611 | HOWTO (R_BFIN_PCREL24_JUMP_L, /* type. */ |
0f64bb02 CM |
612 | 1, /* rightshift. */ |
613 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
614 | 24, /* bitsize. */ | |
615 | TRUE, /* pc_relative. */ | |
616 | 0, /* bitpos. */ | |
617 | complain_overflow_signed, /* complain_on_overflow. */ | |
618 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 619 | "R_BFIN_PCREL24_JUMP_L", /* name. */ |
0f64bb02 | 620 | FALSE, /* partial_inplace. */ |
f4707595 | 621 | 0, /* src_mask. */ |
0f64bb02 CM |
622 | 0x00FFFFFF, /* dst_mask. */ |
623 | TRUE), /* pcrel_offset. */ | |
624 | ||
cb88ce9f | 625 | HOWTO (R_BFIN_PCREL24_CALL_X, /* type. */ |
0f64bb02 CM |
626 | 1, /* rightshift. */ |
627 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
628 | 24, /* bitsize. */ | |
629 | TRUE, /* pc_relative. */ | |
630 | 0, /* bitpos. */ | |
631 | complain_overflow_signed, /* complain_on_overflow. */ | |
632 | bfin_pcrel24_reloc, /* special_function. */ | |
cb88ce9f | 633 | "R_BFIN_PCREL24_CALL_X", /* name. */ |
0f64bb02 | 634 | FALSE, /* partial_inplace. */ |
f4707595 | 635 | 0, /* src_mask. */ |
0f64bb02 CM |
636 | 0x00FFFFFF, /* dst_mask. */ |
637 | TRUE), /* pcrel_offset. */ | |
638 | ||
cb88ce9f | 639 | HOWTO (R_BFIN_VAR_EQ_SYMB, /* type. */ |
0f64bb02 CM |
640 | 0, /* rightshift. */ |
641 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
642 | 32, /* bitsize. */ | |
643 | FALSE, /* pc_relative. */ | |
644 | 0, /* bitpos. */ | |
645 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
646 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 647 | "R_BFIN_VAR_EQ_SYMB", /* name. */ |
0f64bb02 CM |
648 | FALSE, /* partial_inplace. */ |
649 | 0, /* src_mask. */ | |
650 | 0, /* dst_mask. */ | |
651 | FALSE), /* pcrel_offset. */ | |
652 | ||
cb88ce9f | 653 | HOWTO (R_BFIN_BYTE_DATA, /* type. */ |
0f64bb02 CM |
654 | 0, /* rightshift. */ |
655 | 0, /* size (0 = byte, 1 = short, 2 = long). */ | |
656 | 8, /* bitsize. */ | |
657 | FALSE, /* pc_relative. */ | |
658 | 0, /* bitpos. */ | |
659 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
660 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 661 | "R_BFIN_BYTE_DATA", /* name. */ |
0f64bb02 | 662 | FALSE, /* partial_inplace. */ |
f4707595 | 663 | 0, /* src_mask. */ |
0f64bb02 CM |
664 | 0xFF, /* dst_mask. */ |
665 | TRUE), /* pcrel_offset. */ | |
666 | ||
cb88ce9f | 667 | HOWTO (R_BFIN_BYTE2_DATA, /* type. */ |
0f64bb02 CM |
668 | 0, /* rightshift. */ |
669 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
670 | 16, /* bitsize. */ | |
671 | FALSE, /* pc_relative. */ | |
672 | 0, /* bitpos. */ | |
673 | complain_overflow_signed, /* complain_on_overflow. */ | |
674 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 675 | "R_BFIN_BYTE2_DATA", /* name. */ |
0f64bb02 | 676 | FALSE, /* partial_inplace. */ |
f4707595 | 677 | 0, /* src_mask. */ |
0f64bb02 CM |
678 | 0xFFFF, /* dst_mask. */ |
679 | TRUE), /* pcrel_offset. */ | |
680 | ||
cb88ce9f | 681 | HOWTO (R_BFIN_BYTE4_DATA, /* type. */ |
0f64bb02 CM |
682 | 0, /* rightshift. */ |
683 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
684 | 32, /* bitsize. */ | |
685 | FALSE, /* pc_relative. */ | |
686 | 0, /* bitpos. */ | |
687 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
688 | bfin_byte4_reloc, /* special_function. */ | |
cb88ce9f | 689 | "R_BFIN_BYTE4_DATA", /* name. */ |
0f64bb02 | 690 | FALSE, /* partial_inplace. */ |
f4707595 | 691 | 0, /* src_mask. */ |
0f64bb02 CM |
692 | 0xFFFFFFFF, /* dst_mask. */ |
693 | TRUE), /* pcrel_offset. */ | |
694 | ||
cb88ce9f | 695 | HOWTO (R_BFIN_PCREL11, /* type. */ |
0f64bb02 CM |
696 | 1, /* rightshift. */ |
697 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
698 | 10, /* bitsize. */ | |
699 | TRUE, /* pc_relative. */ | |
700 | 0, /* bitpos. */ | |
701 | complain_overflow_unsigned, /* complain_on_overflow. */ | |
702 | bfin_bfd_reloc, /* special_function. */ | |
cb88ce9f | 703 | "R_BFIN_PCREL11", /* name. */ |
0f64bb02 | 704 | FALSE, /* partial_inplace. */ |
f4707595 | 705 | 0, /* src_mask. */ |
0f64bb02 CM |
706 | 0x000003FF, /* dst_mask. */ |
707 | FALSE), /* pcrel_offset. */ | |
48d502e1 BS |
708 | |
709 | ||
710 | /* A 18-bit signed operand with the GOT offset for the address of | |
711 | the symbol. */ | |
07d6d2b8 | 712 | HOWTO (R_BFIN_GOT17M4, /* type */ |
48d502e1 BS |
713 | 2, /* rightshift */ |
714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
715 | 16, /* bitsize */ | |
716 | FALSE, /* pc_relative */ | |
717 | 0, /* bitpos */ | |
718 | complain_overflow_signed, /* complain_on_overflow */ | |
719 | bfd_elf_generic_reloc, /* special_function */ | |
5dff4664 | 720 | "R_BFIN_GOT17M4", /* name */ |
48d502e1 | 721 | FALSE, /* partial_inplace */ |
07d6d2b8 AM |
722 | 0xffff, /* src_mask */ |
723 | 0xffff, /* dst_mask */ | |
724 | FALSE), /* pcrel_offset */ | |
48d502e1 BS |
725 | |
726 | /* The upper 16 bits of the GOT offset for the address of the | |
727 | symbol. */ | |
07d6d2b8 | 728 | HOWTO (R_BFIN_GOTHI, /* type */ |
48d502e1 BS |
729 | 0, /* rightshift */ |
730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
731 | 16, /* bitsize */ | |
732 | FALSE, /* pc_relative */ | |
733 | 0, /* bitpos */ | |
734 | complain_overflow_dont, /* complain_on_overflow */ | |
735 | bfd_elf_generic_reloc, /* special_function */ | |
736 | "R_BFIN_GOTHI", /* name */ | |
737 | FALSE, /* partial_inplace */ | |
07d6d2b8 | 738 | 0xffff, /* src_mask */ |
48d502e1 | 739 | 0xffff, /* dst_mask */ |
07d6d2b8 | 740 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
741 | |
742 | /* The lower 16 bits of the GOT offset for the address of the | |
743 | symbol. */ | |
07d6d2b8 | 744 | HOWTO (R_BFIN_GOTLO, /* type */ |
48d502e1 BS |
745 | 0, /* rightshift */ |
746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
747 | 16, /* bitsize */ | |
748 | FALSE, /* pc_relative */ | |
749 | 0, /* bitpos */ | |
750 | complain_overflow_dont, /* complain_on_overflow */ | |
751 | bfd_elf_generic_reloc, /* special_function */ | |
752 | "R_BFIN_GOTLO", /* name */ | |
753 | FALSE, /* partial_inplace */ | |
754 | 0xffff, /* src_mask */ | |
755 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 756 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
757 | |
758 | /* The 32-bit address of the canonical descriptor of a function. */ | |
759 | HOWTO (R_BFIN_FUNCDESC, /* type */ | |
760 | 0, /* rightshift */ | |
761 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 32, /* bitsize */ | |
763 | FALSE, /* pc_relative */ | |
764 | 0, /* bitpos */ | |
765 | complain_overflow_bitfield, /* complain_on_overflow */ | |
766 | bfd_elf_generic_reloc, /* special_function */ | |
767 | "R_BFIN_FUNCDESC", /* name */ | |
768 | FALSE, /* partial_inplace */ | |
769 | 0xffffffff, /* src_mask */ | |
770 | 0xffffffff, /* dst_mask */ | |
771 | FALSE), /* pcrel_offset */ | |
772 | ||
773 | /* A 12-bit signed operand with the GOT offset for the address of | |
774 | canonical descriptor of a function. */ | |
775 | HOWTO (R_BFIN_FUNCDESC_GOT17M4, /* type */ | |
776 | 2, /* rightshift */ | |
777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
778 | 16, /* bitsize */ | |
779 | FALSE, /* pc_relative */ | |
780 | 0, /* bitpos */ | |
781 | complain_overflow_signed, /* complain_on_overflow */ | |
782 | bfd_elf_generic_reloc, /* special_function */ | |
783 | "R_BFIN_FUNCDESC_GOT17M4", /* name */ | |
784 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
785 | 0xffff, /* src_mask */ |
786 | 0xffff, /* dst_mask */ | |
787 | FALSE), /* pcrel_offset */ | |
48d502e1 BS |
788 | |
789 | /* The upper 16 bits of the GOT offset for the address of the | |
790 | canonical descriptor of a function. */ | |
791 | HOWTO (R_BFIN_FUNCDESC_GOTHI, /* type */ | |
792 | 0, /* rightshift */ | |
793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 16, /* bitsize */ | |
795 | FALSE, /* pc_relative */ | |
796 | 0, /* bitpos */ | |
797 | complain_overflow_dont, /* complain_on_overflow */ | |
798 | bfd_elf_generic_reloc, /* special_function */ | |
799 | "R_BFIN_FUNCDESC_GOTHI", /* name */ | |
800 | FALSE, /* partial_inplace */ | |
801 | 0xffff, /* src_mask */ | |
802 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 803 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
804 | |
805 | /* The lower 16 bits of the GOT offset for the address of the | |
806 | canonical descriptor of a function. */ | |
807 | HOWTO (R_BFIN_FUNCDESC_GOTLO, /* type */ | |
808 | 0, /* rightshift */ | |
809 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 16, /* bitsize */ | |
811 | FALSE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | "R_BFIN_FUNCDESC_GOTLO", /* name */ | |
816 | FALSE, /* partial_inplace */ | |
817 | 0xffff, /* src_mask */ | |
818 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 819 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
820 | |
821 | /* The 32-bit address of the canonical descriptor of a function. */ | |
822 | HOWTO (R_BFIN_FUNCDESC_VALUE, /* type */ | |
823 | 0, /* rightshift */ | |
824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
825 | 64, /* bitsize */ | |
826 | FALSE, /* pc_relative */ | |
827 | 0, /* bitpos */ | |
828 | complain_overflow_bitfield, /* complain_on_overflow */ | |
829 | bfd_elf_generic_reloc, /* special_function */ | |
830 | "R_BFIN_FUNCDESC_VALUE", /* name */ | |
831 | FALSE, /* partial_inplace */ | |
832 | 0xffffffff, /* src_mask */ | |
833 | 0xffffffff, /* dst_mask */ | |
834 | FALSE), /* pcrel_offset */ | |
835 | ||
836 | /* A 12-bit signed operand with the GOT offset for the address of | |
837 | canonical descriptor of a function. */ | |
838 | HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4, /* type */ | |
839 | 2, /* rightshift */ | |
840 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
841 | 16, /* bitsize */ | |
842 | FALSE, /* pc_relative */ | |
843 | 0, /* bitpos */ | |
844 | complain_overflow_signed, /* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */ | |
847 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
848 | 0xffff, /* src_mask */ |
849 | 0xffff, /* dst_mask */ | |
850 | FALSE), /* pcrel_offset */ | |
48d502e1 BS |
851 | |
852 | /* The upper 16 bits of the GOT offset for the address of the | |
853 | canonical descriptor of a function. */ | |
854 | HOWTO (R_BFIN_FUNCDESC_GOTOFFHI, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
857 | 16, /* bitsize */ | |
858 | FALSE, /* pc_relative */ | |
859 | 0, /* bitpos */ | |
860 | complain_overflow_dont, /* complain_on_overflow */ | |
861 | bfd_elf_generic_reloc, /* special_function */ | |
862 | "R_BFIN_FUNCDESC_GOTOFFHI", /* name */ | |
863 | FALSE, /* partial_inplace */ | |
864 | 0xffff, /* src_mask */ | |
865 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 866 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
867 | |
868 | /* The lower 16 bits of the GOT offset for the address of the | |
869 | canonical descriptor of a function. */ | |
870 | HOWTO (R_BFIN_FUNCDESC_GOTOFFLO, /* type */ | |
871 | 0, /* rightshift */ | |
872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 16, /* bitsize */ | |
874 | FALSE, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_dont, /* complain_on_overflow */ | |
877 | bfd_elf_generic_reloc, /* special_function */ | |
878 | "R_BFIN_FUNCDESC_GOTOFFLO", /* name */ | |
879 | FALSE, /* partial_inplace */ | |
880 | 0xffff, /* src_mask */ | |
881 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 882 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
883 | |
884 | /* A 12-bit signed operand with the GOT offset for the address of | |
885 | the symbol. */ | |
07d6d2b8 | 886 | HOWTO (R_BFIN_GOTOFF17M4, /* type */ |
48d502e1 BS |
887 | 2, /* rightshift */ |
888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
889 | 16, /* bitsize */ | |
890 | FALSE, /* pc_relative */ | |
891 | 0, /* bitpos */ | |
892 | complain_overflow_signed, /* complain_on_overflow */ | |
893 | bfd_elf_generic_reloc, /* special_function */ | |
894 | "R_BFIN_GOTOFF17M4", /* name */ | |
895 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
896 | 0xffff, /* src_mask */ |
897 | 0xffff, /* dst_mask */ | |
898 | FALSE), /* pcrel_offset */ | |
48d502e1 BS |
899 | |
900 | /* The upper 16 bits of the GOT offset for the address of the | |
901 | symbol. */ | |
07d6d2b8 | 902 | HOWTO (R_BFIN_GOTOFFHI, /* type */ |
48d502e1 BS |
903 | 0, /* rightshift */ |
904 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 16, /* bitsize */ | |
906 | FALSE, /* pc_relative */ | |
907 | 0, /* bitpos */ | |
908 | complain_overflow_dont, /* complain_on_overflow */ | |
909 | bfd_elf_generic_reloc, /* special_function */ | |
910 | "R_BFIN_GOTOFFHI", /* name */ | |
911 | FALSE, /* partial_inplace */ | |
912 | 0xffff, /* src_mask */ | |
913 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 914 | FALSE), /* pcrel_offset */ |
48d502e1 BS |
915 | |
916 | /* The lower 16 bits of the GOT offset for the address of the | |
917 | symbol. */ | |
918 | HOWTO (R_BFIN_GOTOFFLO, /* type */ | |
919 | 0, /* rightshift */ | |
920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 16, /* bitsize */ | |
922 | FALSE, /* pc_relative */ | |
923 | 0, /* bitpos */ | |
924 | complain_overflow_dont, /* complain_on_overflow */ | |
925 | bfd_elf_generic_reloc, /* special_function */ | |
926 | "R_BFIN_GOTOFFLO", /* name */ | |
927 | FALSE, /* partial_inplace */ | |
928 | 0xffff, /* src_mask */ | |
929 | 0xffff, /* dst_mask */ | |
07d6d2b8 | 930 | FALSE), /* pcrel_offset */ |
0f64bb02 CM |
931 | }; |
932 | ||
0f64bb02 CM |
933 | static reloc_howto_type bfin_gnuext_howto_table [] = |
934 | { | |
cb88ce9f | 935 | HOWTO (R_BFIN_PLTPC, /* type. */ |
0f64bb02 CM |
936 | 0, /* rightshift. */ |
937 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
938 | 16, /* bitsize. */ | |
939 | FALSE, /* pc_relative. */ | |
940 | 0, /* bitpos. */ | |
941 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
942 | bfin_pltpc_reloc, /* special_function. */ | |
cb88ce9f | 943 | "R_BFIN_PLTPC", /* name. */ |
0f64bb02 CM |
944 | FALSE, /* partial_inplace. */ |
945 | 0xffff, /* src_mask. */ | |
946 | 0xffff, /* dst_mask. */ | |
947 | FALSE), /* pcrel_offset. */ | |
948 | ||
cb88ce9f | 949 | HOWTO (R_BFIN_GOT, /* type. */ |
0f64bb02 CM |
950 | 0, /* rightshift. */ |
951 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
952 | 16, /* bitsize. */ | |
953 | FALSE, /* pc_relative. */ | |
954 | 0, /* bitpos. */ | |
955 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
956 | bfd_elf_generic_reloc, /* special_function. */ | |
cb88ce9f | 957 | "R_BFIN_GOT", /* name. */ |
0f64bb02 CM |
958 | FALSE, /* partial_inplace. */ |
959 | 0x7fff, /* src_mask. */ | |
960 | 0x7fff, /* dst_mask. */ | |
961 | FALSE), /* pcrel_offset. */ | |
962 | ||
963 | /* GNU extension to record C++ vtable hierarchy. */ | |
07d6d2b8 AM |
964 | HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */ |
965 | 0, /* rightshift. */ | |
966 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
967 | 0, /* bitsize. */ | |
968 | FALSE, /* pc_relative. */ | |
969 | 0, /* bitpos. */ | |
970 | complain_overflow_dont, /* complain_on_overflow. */ | |
971 | NULL, /* special_function. */ | |
972 | "R_BFIN_GNU_VTINHERIT", /* name. */ | |
973 | FALSE, /* partial_inplace. */ | |
974 | 0, /* src_mask. */ | |
975 | 0, /* dst_mask. */ | |
976 | FALSE), /* pcrel_offset. */ | |
0f64bb02 CM |
977 | |
978 | /* GNU extension to record C++ vtable member usage. */ | |
979 | HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ | |
07d6d2b8 AM |
980 | 0, /* rightshift. */ |
981 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
982 | 0, /* bitsize. */ | |
983 | FALSE, /* pc_relative. */ | |
984 | 0, /* bitpos. */ | |
985 | complain_overflow_dont, /* complain_on_overflow. */ | |
986 | _bfd_elf_rel_vtable_reloc_fn, /* special_function. */ | |
987 | "R_BFIN_GNU_VTENTRY", /* name. */ | |
988 | FALSE, /* partial_inplace. */ | |
989 | 0, /* src_mask. */ | |
990 | 0, /* dst_mask. */ | |
991 | FALSE) /* pcrel_offset. */ | |
0f64bb02 CM |
992 | }; |
993 | ||
994 | struct bfin_reloc_map | |
995 | { | |
07d6d2b8 | 996 | bfd_reloc_code_real_type bfd_reloc_val; |
0f64bb02 CM |
997 | unsigned int bfin_reloc_val; |
998 | }; | |
999 | ||
1000 | static const struct bfin_reloc_map bfin_reloc_map [] = | |
1001 | { | |
cb88ce9f BS |
1002 | { BFD_RELOC_NONE, R_BFIN_UNUSED0 }, |
1003 | { BFD_RELOC_BFIN_5_PCREL, R_BFIN_PCREL5M2 }, | |
1004 | { BFD_RELOC_NONE, R_BFIN_UNUSED1 }, | |
1005 | { BFD_RELOC_BFIN_10_PCREL, R_BFIN_PCREL10 }, | |
1006 | { BFD_RELOC_BFIN_12_PCREL_JUMP, R_BFIN_PCREL12_JUMP }, | |
1007 | { BFD_RELOC_BFIN_16_IMM, R_BFIN_RIMM16 }, | |
1008 | { BFD_RELOC_BFIN_16_LOW, R_BFIN_LUIMM16 }, | |
1009 | { BFD_RELOC_BFIN_16_HIGH, R_BFIN_HUIMM16 }, | |
1010 | { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_BFIN_PCREL12_JUMP_S }, | |
1011 | { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 }, | |
1012 | { BFD_RELOC_24_PCREL, R_BFIN_PCREL24 }, | |
1013 | { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_BFIN_PCREL24_JUMP_L }, | |
1014 | { BFD_RELOC_NONE, R_BFIN_UNUSEDB }, | |
1015 | { BFD_RELOC_NONE, R_BFIN_UNUSEDC }, | |
1016 | { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_BFIN_PCREL24_CALL_X }, | |
1017 | { BFD_RELOC_8, R_BFIN_BYTE_DATA }, | |
1018 | { BFD_RELOC_16, R_BFIN_BYTE2_DATA }, | |
1019 | { BFD_RELOC_32, R_BFIN_BYTE4_DATA }, | |
1020 | { BFD_RELOC_BFIN_11_PCREL, R_BFIN_PCREL11 }, | |
1021 | { BFD_RELOC_BFIN_GOT, R_BFIN_GOT }, | |
1022 | { BFD_RELOC_BFIN_PLTPC, R_BFIN_PLTPC }, | |
48d502e1 BS |
1023 | |
1024 | { BFD_RELOC_BFIN_GOT17M4, R_BFIN_GOT17M4 }, | |
1025 | { BFD_RELOC_BFIN_GOTHI, R_BFIN_GOTHI }, | |
1026 | { BFD_RELOC_BFIN_GOTLO, R_BFIN_GOTLO }, | |
1027 | { BFD_RELOC_BFIN_FUNCDESC, R_BFIN_FUNCDESC }, | |
1028 | { BFD_RELOC_BFIN_FUNCDESC_GOT17M4, R_BFIN_FUNCDESC_GOT17M4 }, | |
1029 | { BFD_RELOC_BFIN_FUNCDESC_GOTHI, R_BFIN_FUNCDESC_GOTHI }, | |
1030 | { BFD_RELOC_BFIN_FUNCDESC_GOTLO, R_BFIN_FUNCDESC_GOTLO }, | |
1031 | { BFD_RELOC_BFIN_FUNCDESC_VALUE, R_BFIN_FUNCDESC_VALUE }, | |
1032 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4, R_BFIN_FUNCDESC_GOTOFF17M4 }, | |
1033 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI, R_BFIN_FUNCDESC_GOTOFFHI }, | |
1034 | { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO, R_BFIN_FUNCDESC_GOTOFFLO }, | |
1035 | { BFD_RELOC_BFIN_GOTOFF17M4, R_BFIN_GOTOFF17M4 }, | |
1036 | { BFD_RELOC_BFIN_GOTOFFHI, R_BFIN_GOTOFFHI }, | |
1037 | { BFD_RELOC_BFIN_GOTOFFLO, R_BFIN_GOTOFFLO }, | |
1038 | ||
0f64bb02 CM |
1039 | { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT }, |
1040 | { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY }, | |
0f64bb02 CM |
1041 | }; |
1042 | ||
1043 | ||
f3185997 NC |
1044 | static bfd_boolean |
1045 | bfin_info_to_howto (bfd *abfd, | |
07d6d2b8 AM |
1046 | arelent *cache_ptr, |
1047 | Elf_Internal_Rela *dst) | |
0f64bb02 CM |
1048 | { |
1049 | unsigned int r_type; | |
1050 | ||
1051 | r_type = ELF32_R_TYPE (dst->r_info); | |
1052 | ||
1053 | if (r_type <= BFIN_RELOC_MAX) | |
1054 | cache_ptr->howto = &bfin_howto_table [r_type]; | |
1055 | ||
0f64bb02 CM |
1056 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1057 | cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1058 | ||
1059 | else | |
f3185997 NC |
1060 | { |
1061 | /* xgettext:c-format */ | |
1062 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1063 | abfd, r_type); | |
1064 | bfd_set_error (bfd_error_bad_value); | |
1065 | return FALSE; | |
1066 | } | |
1067 | ||
1068 | return TRUE; | |
0f64bb02 | 1069 | } |
157090f7 | 1070 | |
0f64bb02 CM |
1071 | /* Given a BFD reloc type, return the howto. */ |
1072 | static reloc_howto_type * | |
1073 | bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1074 | bfd_reloc_code_real_type code) | |
1075 | { | |
1076 | unsigned int i; | |
0ba38529 | 1077 | unsigned int r_type = (unsigned int) -1; |
0f64bb02 | 1078 | |
0ba38529 | 1079 | for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); i--;) |
0f64bb02 CM |
1080 | if (bfin_reloc_map[i].bfd_reloc_val == code) |
1081 | r_type = bfin_reloc_map[i].bfin_reloc_val; | |
1082 | ||
0ba38529 | 1083 | if (r_type <= BFIN_RELOC_MAX) |
0f64bb02 CM |
1084 | return &bfin_howto_table [r_type]; |
1085 | ||
0f64bb02 CM |
1086 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1087 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1088 | ||
1089 | return (reloc_howto_type *) NULL; | |
157090f7 | 1090 | } |
0f64bb02 | 1091 | |
157090f7 AM |
1092 | static reloc_howto_type * |
1093 | bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1094 | const char *r_name) | |
1095 | { | |
1096 | unsigned int i; | |
1097 | ||
1098 | for (i = 0; | |
1099 | i < (sizeof (bfin_howto_table) | |
1100 | / sizeof (bfin_howto_table[0])); | |
1101 | i++) | |
1102 | if (bfin_howto_table[i].name != NULL | |
1103 | && strcasecmp (bfin_howto_table[i].name, r_name) == 0) | |
1104 | return &bfin_howto_table[i]; | |
1105 | ||
1106 | for (i = 0; | |
1107 | i < (sizeof (bfin_gnuext_howto_table) | |
1108 | / sizeof (bfin_gnuext_howto_table[0])); | |
1109 | i++) | |
1110 | if (bfin_gnuext_howto_table[i].name != NULL | |
1111 | && strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0) | |
1112 | return &bfin_gnuext_howto_table[i]; | |
1113 | ||
1114 | return NULL; | |
0f64bb02 | 1115 | } |
157090f7 | 1116 | |
0f64bb02 CM |
1117 | /* Given a bfin relocation type, return the howto. */ |
1118 | static reloc_howto_type * | |
1119 | bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
2c3fc389 | 1120 | unsigned int r_type) |
0f64bb02 CM |
1121 | { |
1122 | if (r_type <= BFIN_RELOC_MAX) | |
1123 | return &bfin_howto_table [r_type]; | |
1124 | ||
0f64bb02 CM |
1125 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1126 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1127 | ||
1128 | return (reloc_howto_type *) NULL; | |
0f64bb02 CM |
1129 | } |
1130 | ||
781303ce MF |
1131 | /* Set by ld emulation if --code-in-l1. */ |
1132 | bfd_boolean elf32_bfin_code_in_l1 = 0; | |
1133 | ||
1134 | /* Set by ld emulation if --data-in-l1. */ | |
1135 | bfd_boolean elf32_bfin_data_in_l1 = 0; | |
1136 | ||
cc364be6 AM |
1137 | static bfd_boolean |
1138 | elf32_bfin_final_write_processing (bfd *abfd) | |
781303ce MF |
1139 | { |
1140 | if (elf32_bfin_code_in_l1) | |
1141 | elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1; | |
1142 | if (elf32_bfin_data_in_l1) | |
1143 | elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1; | |
cc364be6 | 1144 | return _bfd_elf_final_write_processing (abfd); |
781303ce MF |
1145 | } |
1146 | ||
0f64bb02 CM |
1147 | /* Return TRUE if the name is a local label. |
1148 | bfin local labels begin with L$. */ | |
1149 | static bfd_boolean | |
2c3fc389 | 1150 | bfin_is_local_label_name (bfd *abfd, const char *label) |
0f64bb02 CM |
1151 | { |
1152 | if (label[0] == 'L' && label[1] == '$' ) | |
1153 | return TRUE; | |
1154 | ||
1155 | return _bfd_elf_is_local_label_name (abfd, label); | |
1156 | } | |
c96a8570 BS |
1157 | \f |
1158 | /* Look through the relocs for a section during the first phase, and | |
1159 | allocate space in the global offset table or procedure linkage | |
1160 | table. */ | |
0f64bb02 | 1161 | |
c96a8570 BS |
1162 | static bfd_boolean |
1163 | bfin_check_relocs (bfd * abfd, | |
1164 | struct bfd_link_info *info, | |
1165 | asection *sec, | |
07d6d2b8 | 1166 | const Elf_Internal_Rela *relocs) |
48d502e1 | 1167 | { |
c96a8570 BS |
1168 | bfd *dynobj; |
1169 | Elf_Internal_Shdr *symtab_hdr; | |
1170 | struct elf_link_hash_entry **sym_hashes; | |
1171 | bfd_signed_vma *local_got_refcounts; | |
1172 | const Elf_Internal_Rela *rel; | |
1173 | const Elf_Internal_Rela *rel_end; | |
48d502e1 | 1174 | asection *sgot; |
c96a8570 | 1175 | asection *srelgot; |
2c3fc389 | 1176 | |
0e1862bb | 1177 | if (bfd_link_relocatable (info)) |
c96a8570 | 1178 | return TRUE; |
48d502e1 | 1179 | |
c96a8570 BS |
1180 | dynobj = elf_hash_table (info)->dynobj; |
1181 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1182 | sym_hashes = elf_sym_hashes (abfd); | |
1183 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
48d502e1 | 1184 | |
c96a8570 BS |
1185 | sgot = NULL; |
1186 | srelgot = NULL; | |
48d502e1 | 1187 | |
c96a8570 BS |
1188 | rel_end = relocs + sec->reloc_count; |
1189 | for (rel = relocs; rel < rel_end; rel++) | |
48d502e1 | 1190 | { |
c96a8570 BS |
1191 | unsigned long r_symndx; |
1192 | struct elf_link_hash_entry *h; | |
48d502e1 | 1193 | |
c96a8570 BS |
1194 | r_symndx = ELF32_R_SYM (rel->r_info); |
1195 | if (r_symndx < symtab_hdr->sh_info) | |
1196 | h = NULL; | |
1197 | else | |
81fbe831 AM |
1198 | { |
1199 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
81fbe831 | 1200 | } |
48d502e1 | 1201 | |
c96a8570 BS |
1202 | switch (ELF32_R_TYPE (rel->r_info)) |
1203 | { | |
1204 | /* This relocation describes the C++ object vtable hierarchy. | |
07d6d2b8 AM |
1205 | Reconstruct it for later use during GC. */ |
1206 | case R_BFIN_GNU_VTINHERIT: | |
1207 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1208 | return FALSE; | |
1209 | break; | |
1210 | ||
1211 | /* This relocation describes which C++ vtable entries | |
1212 | are actually used. Record for later use during GC. */ | |
1213 | case R_BFIN_GNU_VTENTRY: | |
a0ea3a14 | 1214 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
07d6d2b8 AM |
1215 | return FALSE; |
1216 | break; | |
48d502e1 | 1217 | |
cb88ce9f | 1218 | case R_BFIN_GOT: |
c96a8570 BS |
1219 | if (h != NULL |
1220 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1221 | break; | |
1222 | /* Fall through. */ | |
48d502e1 | 1223 | |
c96a8570 BS |
1224 | if (dynobj == NULL) |
1225 | { | |
1226 | /* Create the .got section. */ | |
1227 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1228 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1229 | return FALSE; | |
1230 | } | |
48d502e1 | 1231 | |
ce558b89 AM |
1232 | sgot = elf_hash_table (info)->sgot; |
1233 | srelgot = elf_hash_table (info)->srelgot; | |
1234 | BFD_ASSERT (sgot != NULL); | |
48d502e1 | 1235 | |
c96a8570 BS |
1236 | if (h != NULL) |
1237 | { | |
1238 | if (h->got.refcount == 0) | |
1239 | { | |
1240 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1241 | if (h->dynindx == -1 && !h->forced_local) | |
1242 | { | |
1243 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
1244 | return FALSE; | |
1245 | } | |
48d502e1 | 1246 | |
c96a8570 BS |
1247 | /* Allocate space in the .got section. */ |
1248 | sgot->size += 4; | |
1249 | /* Allocate relocation space. */ | |
1250 | srelgot->size += sizeof (Elf32_External_Rela); | |
1251 | } | |
1252 | h->got.refcount++; | |
1253 | } | |
1254 | else | |
1255 | { | |
1256 | /* This is a global offset table entry for a local symbol. */ | |
1257 | if (local_got_refcounts == NULL) | |
1258 | { | |
1259 | bfd_size_type size; | |
48d502e1 | 1260 | |
c96a8570 BS |
1261 | size = symtab_hdr->sh_info; |
1262 | size *= sizeof (bfd_signed_vma); | |
1263 | local_got_refcounts = ((bfd_signed_vma *) | |
1264 | bfd_zalloc (abfd, size)); | |
1265 | if (local_got_refcounts == NULL) | |
1266 | return FALSE; | |
1267 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1268 | } | |
1269 | if (local_got_refcounts[r_symndx] == 0) | |
1270 | { | |
1271 | sgot->size += 4; | |
0e1862bb | 1272 | if (bfd_link_pic (info)) |
c96a8570 BS |
1273 | { |
1274 | /* If we are generating a shared object, we need to | |
07d6d2b8 AM |
1275 | output a R_68K_RELATIVE reloc so that the dynamic |
1276 | linker can adjust this GOT entry. */ | |
c96a8570 BS |
1277 | srelgot->size += sizeof (Elf32_External_Rela); |
1278 | } | |
1279 | } | |
1280 | local_got_refcounts[r_symndx]++; | |
1281 | } | |
1282 | break; | |
48d502e1 | 1283 | |
c96a8570 BS |
1284 | default: |
1285 | break; | |
1286 | } | |
1287 | } | |
1288 | ||
1289 | return TRUE; | |
48d502e1 BS |
1290 | } |
1291 | ||
c96a8570 | 1292 | static enum elf_reloc_type_class |
7e612e98 AM |
1293 | elf32_bfin_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1294 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
1295 | const Elf_Internal_Rela * rela) | |
48d502e1 | 1296 | { |
c96a8570 BS |
1297 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
1298 | { | |
1299 | default: | |
1300 | return reloc_class_normal; | |
1301 | } | |
1302 | } | |
1303 | \f | |
1304 | static bfd_reloc_status_type | |
1305 | bfin_final_link_relocate (Elf_Internal_Rela *rel, reloc_howto_type *howto, | |
1306 | bfd *input_bfd, asection *input_section, | |
1307 | bfd_byte *contents, bfd_vma address, | |
1308 | bfd_vma value, bfd_vma addend) | |
1309 | { | |
1310 | int r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 1311 | |
cb88ce9f | 1312 | if (r_type == R_BFIN_PCREL24 || r_type == R_BFIN_PCREL24_JUMP_L) |
c96a8570 BS |
1313 | { |
1314 | bfd_reloc_status_type r = bfd_reloc_ok; | |
1315 | bfd_vma x; | |
48d502e1 | 1316 | |
c96a8570 BS |
1317 | if (address > bfd_get_section_limit (input_bfd, input_section)) |
1318 | return bfd_reloc_outofrange; | |
48d502e1 | 1319 | |
c96a8570 | 1320 | value += addend; |
48d502e1 | 1321 | |
c96a8570 BS |
1322 | /* Perform usual pc-relative correction. */ |
1323 | value -= input_section->output_section->vma + input_section->output_offset; | |
1324 | value -= address; | |
48d502e1 | 1325 | |
c96a8570 BS |
1326 | /* We are getting reloc_entry->address 2 byte off from |
1327 | the start of instruction. Assuming absolute postion | |
1328 | of the reloc data. But, following code had been written assuming | |
1329 | reloc address is starting at begining of instruction. | |
1330 | To compensate that I have increased the value of | |
1331 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
48d502e1 | 1332 | |
c96a8570 BS |
1333 | value += 2; |
1334 | address -= 2; | |
48d502e1 | 1335 | |
c96a8570 BS |
1336 | if ((value & 0xFF000000) != 0 |
1337 | && (value & 0xFF000000) != 0xFF000000) | |
1338 | r = bfd_reloc_overflow; | |
48d502e1 | 1339 | |
c96a8570 | 1340 | value >>= 1; |
48d502e1 | 1341 | |
c96a8570 BS |
1342 | x = bfd_get_16 (input_bfd, contents + address); |
1343 | x = (x & 0xff00) | ((value >> 16) & 0xff); | |
1344 | bfd_put_16 (input_bfd, x, contents + address); | |
48d502e1 | 1345 | |
c96a8570 BS |
1346 | x = bfd_get_16 (input_bfd, contents + address + 2); |
1347 | x = value & 0xFFFF; | |
1348 | bfd_put_16 (input_bfd, x, contents + address + 2); | |
1349 | return r; | |
1350 | } | |
48d502e1 | 1351 | |
c96a8570 BS |
1352 | return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
1353 | rel->r_offset, value, addend); | |
48d502e1 | 1354 | |
48d502e1 BS |
1355 | } |
1356 | ||
c96a8570 BS |
1357 | static bfd_boolean |
1358 | bfin_relocate_section (bfd * output_bfd, | |
1359 | struct bfd_link_info *info, | |
1360 | bfd * input_bfd, | |
1361 | asection * input_section, | |
1362 | bfd_byte * contents, | |
1363 | Elf_Internal_Rela * relocs, | |
1364 | Elf_Internal_Sym * local_syms, | |
1365 | asection ** local_sections) | |
48d502e1 | 1366 | { |
c96a8570 BS |
1367 | bfd *dynobj; |
1368 | Elf_Internal_Shdr *symtab_hdr; | |
1369 | struct elf_link_hash_entry **sym_hashes; | |
1370 | bfd_vma *local_got_offsets; | |
1371 | asection *sgot; | |
c96a8570 BS |
1372 | Elf_Internal_Rela *rel; |
1373 | Elf_Internal_Rela *relend; | |
1374 | int i = 0; | |
48d502e1 | 1375 | |
c96a8570 BS |
1376 | dynobj = elf_hash_table (info)->dynobj; |
1377 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1378 | sym_hashes = elf_sym_hashes (input_bfd); | |
1379 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
48d502e1 | 1380 | |
c96a8570 | 1381 | sgot = NULL; |
48d502e1 | 1382 | |
c96a8570 BS |
1383 | rel = relocs; |
1384 | relend = relocs + input_section->reloc_count; | |
1385 | for (; rel < relend; rel++, i++) | |
1386 | { | |
1387 | int r_type; | |
1388 | reloc_howto_type *howto; | |
1389 | unsigned long r_symndx; | |
1390 | struct elf_link_hash_entry *h; | |
1391 | Elf_Internal_Sym *sym; | |
1392 | asection *sec; | |
1393 | bfd_vma relocation = 0; | |
1394 | bfd_boolean unresolved_reloc; | |
1395 | bfd_reloc_status_type r; | |
1396 | bfd_vma address; | |
48d502e1 | 1397 | |
c96a8570 BS |
1398 | r_type = ELF32_R_TYPE (rel->r_info); |
1399 | if (r_type < 0 || r_type >= 243) | |
1400 | { | |
1401 | bfd_set_error (bfd_error_bad_value); | |
1402 | return FALSE; | |
1403 | } | |
48d502e1 | 1404 | |
c96a8570 | 1405 | if (r_type == R_BFIN_GNU_VTENTRY |
07d6d2b8 | 1406 | || r_type == R_BFIN_GNU_VTINHERIT) |
c96a8570 | 1407 | continue; |
48d502e1 | 1408 | |
c96a8570 BS |
1409 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
1410 | if (howto == NULL) | |
1411 | { | |
1412 | bfd_set_error (bfd_error_bad_value); | |
1413 | return FALSE; | |
1414 | } | |
1415 | r_symndx = ELF32_R_SYM (rel->r_info); | |
48d502e1 | 1416 | |
c96a8570 BS |
1417 | h = NULL; |
1418 | sym = NULL; | |
1419 | sec = NULL; | |
1420 | unresolved_reloc = FALSE; | |
48d502e1 | 1421 | |
c96a8570 BS |
1422 | if (r_symndx < symtab_hdr->sh_info) |
1423 | { | |
1424 | sym = local_syms + r_symndx; | |
1425 | sec = local_sections[r_symndx]; | |
1426 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1427 | } | |
1428 | else | |
1429 | { | |
62d887d4 | 1430 | bfd_boolean warned, ignored; |
48d502e1 | 1431 | |
c96a8570 BS |
1432 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1433 | r_symndx, symtab_hdr, sym_hashes, | |
1434 | h, sec, relocation, | |
62d887d4 | 1435 | unresolved_reloc, warned, ignored); |
c96a8570 | 1436 | } |
48d502e1 | 1437 | |
dbaa2011 | 1438 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1439 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1440 | rel, 1, relend, howto, 0, contents); |
48d502e1 | 1441 | |
0e1862bb | 1442 | if (bfd_link_relocatable (info)) |
c96a8570 | 1443 | continue; |
48d502e1 | 1444 | |
c96a8570 | 1445 | address = rel->r_offset; |
48d502e1 | 1446 | |
c96a8570 BS |
1447 | /* Then, process normally. */ |
1448 | switch (r_type) | |
1449 | { | |
1450 | case R_BFIN_GNU_VTINHERIT: | |
1451 | case R_BFIN_GNU_VTENTRY: | |
1452 | return bfd_reloc_ok; | |
48d502e1 | 1453 | |
cb88ce9f | 1454 | case R_BFIN_GOT: |
c96a8570 BS |
1455 | /* Relocation is to the address of the entry for this symbol |
1456 | in the global offset table. */ | |
1457 | if (h != NULL | |
1458 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1459 | goto do_default; | |
1460 | /* Fall through. */ | |
1461 | /* Relocation is the offset of the entry for this symbol in | |
1462 | the global offset table. */ | |
48d502e1 | 1463 | |
c96a8570 BS |
1464 | { |
1465 | bfd_vma off; | |
48d502e1 | 1466 | |
ce558b89 | 1467 | if (dynobj == NULL) |
c96a8570 | 1468 | { |
ce558b89 AM |
1469 | /* Create the .got section. */ |
1470 | elf_hash_table (info)->dynobj = dynobj = output_bfd; | |
1471 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1472 | return FALSE; | |
c96a8570 | 1473 | } |
48d502e1 | 1474 | |
ce558b89 AM |
1475 | sgot = elf_hash_table (info)->sgot; |
1476 | BFD_ASSERT (sgot != NULL); | |
1477 | ||
c96a8570 BS |
1478 | if (h != NULL) |
1479 | { | |
1480 | bfd_boolean dyn; | |
48d502e1 | 1481 | |
c96a8570 BS |
1482 | off = h->got.offset; |
1483 | BFD_ASSERT (off != (bfd_vma) - 1); | |
1484 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
48d502e1 | 1485 | |
0e1862bb L |
1486 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
1487 | bfd_link_pic (info), | |
1488 | h) | |
1489 | || (bfd_link_pic (info) | |
c96a8570 BS |
1490 | && (info->symbolic |
1491 | || h->dynindx == -1 | |
1492 | || h->forced_local) | |
1493 | && h->def_regular)) | |
1494 | { | |
1495 | /* This is actually a static link, or it is a | |
1496 | -Bsymbolic link and the symbol is defined | |
1497 | locally, or the symbol was forced to be local | |
1498 | because of a version file.. We must initialize | |
1499 | this entry in the global offset table. Since | |
1500 | the offset must always be a multiple of 4, we | |
1501 | use the least significant bit to record whether | |
1502 | we have initialized it already. | |
48d502e1 | 1503 | |
c96a8570 BS |
1504 | When doing a dynamic link, we create a .rela.got |
1505 | relocation entry to initialize the value. This | |
1506 | is done in the finish_dynamic_symbol routine. */ | |
1507 | if ((off & 1) != 0) | |
1508 | off &= ~1; | |
1509 | else | |
1510 | { | |
1511 | bfd_put_32 (output_bfd, relocation, | |
1512 | sgot->contents + off); | |
1513 | h->got.offset |= 1; | |
1514 | } | |
1515 | } | |
1516 | else | |
1517 | unresolved_reloc = FALSE; | |
1518 | } | |
1519 | else | |
1520 | { | |
1521 | BFD_ASSERT (local_got_offsets != NULL); | |
1522 | off = local_got_offsets[r_symndx]; | |
1523 | BFD_ASSERT (off != (bfd_vma) - 1); | |
48d502e1 | 1524 | |
c96a8570 BS |
1525 | /* The offset must always be a multiple of 4. We use |
1526 | the least significant bit to record whether we have | |
1527 | already generated the necessary reloc. */ | |
1528 | if ((off & 1) != 0) | |
1529 | off &= ~1; | |
1530 | else | |
1531 | { | |
1532 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
48d502e1 | 1533 | |
0e1862bb | 1534 | if (bfd_link_pic (info)) |
c96a8570 BS |
1535 | { |
1536 | asection *s; | |
1537 | Elf_Internal_Rela outrel; | |
1538 | bfd_byte *loc; | |
48d502e1 | 1539 | |
ce558b89 | 1540 | s = elf_hash_table (info)->srelgot; |
c96a8570 | 1541 | BFD_ASSERT (s != NULL); |
48d502e1 | 1542 | |
c96a8570 BS |
1543 | outrel.r_offset = (sgot->output_section->vma |
1544 | + sgot->output_offset + off); | |
1545 | outrel.r_info = | |
cb88ce9f | 1546 | ELF32_R_INFO (0, R_BFIN_PCREL24); |
c96a8570 BS |
1547 | outrel.r_addend = relocation; |
1548 | loc = s->contents; | |
1549 | loc += | |
1550 | s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1551 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1552 | } | |
48d502e1 | 1553 | |
c96a8570 BS |
1554 | local_got_offsets[r_symndx] |= 1; |
1555 | } | |
1556 | } | |
48d502e1 | 1557 | |
c96a8570 BS |
1558 | relocation = sgot->output_offset + off; |
1559 | rel->r_addend = 0; | |
07d6d2b8 AM |
1560 | /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ |
1561 | relocation /= 4; | |
c96a8570 BS |
1562 | } |
1563 | goto do_default; | |
1564 | ||
1565 | default: | |
1566 | do_default: | |
1567 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, | |
1568 | contents, address, | |
1569 | relocation, rel->r_addend); | |
1570 | ||
1571 | break; | |
48d502e1 BS |
1572 | } |
1573 | ||
c96a8570 | 1574 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
07d6d2b8 AM |
1575 | because such sections are not SEC_ALLOC and thus ld.so will |
1576 | not process them. */ | |
c96a8570 | 1577 | if (unresolved_reloc |
1d5316ab AM |
1578 | && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic) |
1579 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
1580 | rel->r_offset) != (bfd_vma) -1) | |
48d502e1 | 1581 | { |
4eca0228 | 1582 | _bfd_error_handler |
695344c0 | 1583 | /* xgettext:c-format */ |
2dcf00ce AM |
1584 | (_("%pB(%pA+%#" PRIx64 "): " |
1585 | "unresolvable relocation against symbol `%s'"), | |
1586 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
1587 | h->root.root.string); | |
c96a8570 | 1588 | return FALSE; |
48d502e1 | 1589 | } |
48d502e1 | 1590 | |
c96a8570 | 1591 | if (r != bfd_reloc_ok) |
48d502e1 | 1592 | { |
c96a8570 BS |
1593 | const char *name; |
1594 | ||
1595 | if (h != NULL) | |
1596 | name = h->root.root.string; | |
1597 | else | |
48d502e1 | 1598 | { |
c96a8570 BS |
1599 | name = bfd_elf_string_from_elf_section (input_bfd, |
1600 | symtab_hdr->sh_link, | |
1601 | sym->st_name); | |
1602 | if (name == NULL) | |
1603 | return FALSE; | |
1604 | if (*name == '\0') | |
fd361982 | 1605 | name = bfd_section_name (sec); |
48d502e1 | 1606 | } |
c96a8570 BS |
1607 | |
1608 | if (r == bfd_reloc_overflow) | |
1a72702b AM |
1609 | (*info->callbacks->reloc_overflow) |
1610 | (info, (h ? &h->root : NULL), name, howto->name, | |
1611 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
48d502e1 BS |
1612 | else |
1613 | { | |
4eca0228 | 1614 | _bfd_error_handler |
695344c0 | 1615 | /* xgettext:c-format */ |
2dcf00ce AM |
1616 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
1617 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
1618 | name, (int) r); | |
c96a8570 | 1619 | return FALSE; |
48d502e1 | 1620 | } |
48d502e1 | 1621 | } |
48d502e1 BS |
1622 | } |
1623 | ||
c96a8570 BS |
1624 | return TRUE; |
1625 | } | |
48d502e1 | 1626 | |
c96a8570 BS |
1627 | static asection * |
1628 | bfin_gc_mark_hook (asection * sec, | |
1629 | struct bfd_link_info *info, | |
1630 | Elf_Internal_Rela * rel, | |
1631 | struct elf_link_hash_entry *h, | |
07d6d2b8 | 1632 | Elf_Internal_Sym * sym) |
c96a8570 BS |
1633 | { |
1634 | if (h != NULL) | |
1635 | switch (ELF32_R_TYPE (rel->r_info)) | |
1636 | { | |
1637 | case R_BFIN_GNU_VTINHERIT: | |
1638 | case R_BFIN_GNU_VTENTRY: | |
1639 | return NULL; | |
1640 | } | |
48d502e1 | 1641 | |
c96a8570 BS |
1642 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
1643 | } | |
c96a8570 | 1644 | \f |
6d00b590 AM |
1645 | extern const bfd_target bfin_elf32_fdpic_vec; |
1646 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfin_elf32_fdpic_vec) | |
0f64bb02 | 1647 | |
4dfe6ac6 NC |
1648 | /* An extension of the elf hash table data structure, |
1649 | containing some additional Blackfin-specific data. */ | |
c96a8570 | 1650 | struct bfinfdpic_elf_link_hash_table |
c35e54f4 | 1651 | { |
c96a8570 | 1652 | struct elf_link_hash_table elf; |
c35e54f4 | 1653 | |
c96a8570 BS |
1654 | /* A pointer to the .rofixup section. */ |
1655 | asection *sgotfixup; | |
c96a8570 BS |
1656 | /* GOT base offset. */ |
1657 | bfd_vma got0; | |
1658 | /* Location of the first non-lazy PLT entry, i.e., the number of | |
1659 | bytes taken by lazy PLT entries. */ | |
1660 | bfd_vma plt0; | |
1661 | /* A hash table holding information about which symbols were | |
1662 | referenced with which PIC-related relocations. */ | |
1663 | struct htab *relocs_info; | |
6a9adeca BS |
1664 | /* Summary reloc information collected by |
1665 | _bfinfdpic_count_got_plt_entries. */ | |
1666 | struct _bfinfdpic_dynamic_got_info *g; | |
c96a8570 | 1667 | }; |
c35e54f4 | 1668 | |
c96a8570 | 1669 | /* Get the Blackfin ELF linker hash table from a link_info structure. */ |
c35e54f4 | 1670 | |
c96a8570 | 1671 | #define bfinfdpic_hash_table(info) \ |
4dfe6ac6 NC |
1672 | (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \ |
1673 | == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL) | |
c35e54f4 | 1674 | |
c96a8570 | 1675 | #define bfinfdpic_got_section(info) \ |
ce558b89 | 1676 | (bfinfdpic_hash_table (info)->elf.sgot) |
c96a8570 | 1677 | #define bfinfdpic_gotrel_section(info) \ |
ce558b89 | 1678 | (bfinfdpic_hash_table (info)->elf.srelgot) |
c96a8570 BS |
1679 | #define bfinfdpic_gotfixup_section(info) \ |
1680 | (bfinfdpic_hash_table (info)->sgotfixup) | |
1681 | #define bfinfdpic_plt_section(info) \ | |
ce558b89 | 1682 | (bfinfdpic_hash_table (info)->elf.splt) |
c96a8570 | 1683 | #define bfinfdpic_pltrel_section(info) \ |
ce558b89 | 1684 | (bfinfdpic_hash_table (info)->elf.srelplt) |
c96a8570 BS |
1685 | #define bfinfdpic_relocs_info(info) \ |
1686 | (bfinfdpic_hash_table (info)->relocs_info) | |
1687 | #define bfinfdpic_got_initial_offset(info) \ | |
1688 | (bfinfdpic_hash_table (info)->got0) | |
1689 | #define bfinfdpic_plt_initial_offset(info) \ | |
1690 | (bfinfdpic_hash_table (info)->plt0) | |
6a9adeca BS |
1691 | #define bfinfdpic_dynamic_got_plt_info(info) \ |
1692 | (bfinfdpic_hash_table (info)->g) | |
c35e54f4 | 1693 | |
c96a8570 BS |
1694 | /* The name of the dynamic interpreter. This is put in the .interp |
1695 | section. */ | |
c35e54f4 | 1696 | |
c96a8570 | 1697 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
c35e54f4 | 1698 | |
c96a8570 | 1699 | #define DEFAULT_STACK_SIZE 0x20000 |
c35e54f4 | 1700 | |
c96a8570 BS |
1701 | /* This structure is used to collect the number of entries present in |
1702 | each addressable range of the got. */ | |
1703 | struct _bfinfdpic_dynamic_got_info | |
1704 | { | |
1705 | /* Several bits of information about the current link. */ | |
1706 | struct bfd_link_info *info; | |
1707 | /* Total size needed for GOT entries within the 18- or 32-bit | |
1708 | ranges. */ | |
1709 | bfd_vma got17m4, gothilo; | |
1710 | /* Total size needed for function descriptor entries within the 18- | |
1711 | or 32-bit ranges. */ | |
1712 | bfd_vma fd17m4, fdhilo; | |
1713 | /* Total size needed function descriptor entries referenced in PLT | |
1714 | entries, that would be profitable to place in offsets close to | |
1715 | the PIC register. */ | |
1716 | bfd_vma fdplt; | |
1717 | /* Total size needed by lazy PLT entries. */ | |
1718 | bfd_vma lzplt; | |
1719 | /* Number of relocations carried over from input object files. */ | |
1720 | unsigned long relocs; | |
1721 | /* Number of fixups introduced by relocations in input object files. */ | |
1722 | unsigned long fixups; | |
1723 | }; | |
c35e54f4 | 1724 | |
c96a8570 | 1725 | /* Create a Blackfin ELF linker hash table. */ |
c35e54f4 | 1726 | |
c96a8570 BS |
1727 | static struct bfd_link_hash_table * |
1728 | bfinfdpic_elf_link_hash_table_create (bfd *abfd) | |
1729 | { | |
1730 | struct bfinfdpic_elf_link_hash_table *ret; | |
1731 | bfd_size_type amt = sizeof (struct bfinfdpic_elf_link_hash_table); | |
c35e54f4 | 1732 | |
22cdc249 | 1733 | ret = bfd_zmalloc (amt); |
c96a8570 BS |
1734 | if (ret == NULL) |
1735 | return NULL; | |
c35e54f4 | 1736 | |
c96a8570 BS |
1737 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
1738 | _bfd_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
1739 | sizeof (struct elf_link_hash_entry), |
1740 | BFIN_ELF_DATA)) | |
c96a8570 BS |
1741 | { |
1742 | free (ret); | |
1743 | return NULL; | |
1744 | } | |
c35e54f4 | 1745 | |
c96a8570 BS |
1746 | return &ret->elf.root; |
1747 | } | |
48d502e1 | 1748 | |
c96a8570 BS |
1749 | /* Decide whether a reference to a symbol can be resolved locally or |
1750 | not. If the symbol is protected, we want the local address, but | |
1751 | its function descriptor must be assigned by the dynamic linker. */ | |
1752 | #define BFINFDPIC_SYM_LOCAL(INFO, H) \ | |
1753 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ | |
1754 | || ! elf_hash_table (INFO)->dynamic_sections_created) | |
1755 | #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \ | |
1756 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) | |
48d502e1 | 1757 | |
c96a8570 BS |
1758 | /* This structure collects information on what kind of GOT, PLT or |
1759 | function descriptors are required by relocations that reference a | |
1760 | certain symbol. */ | |
1761 | struct bfinfdpic_relocs_info | |
1762 | { | |
1763 | /* The index of the symbol, as stored in the relocation r_info, if | |
1764 | we have a local symbol; -1 otherwise. */ | |
1765 | long symndx; | |
1766 | union | |
1767 | { | |
1768 | /* The input bfd in which the symbol is defined, if it's a local | |
1769 | symbol. */ | |
1770 | bfd *abfd; | |
1771 | /* If symndx == -1, the hash table entry corresponding to a global | |
1772 | symbol (even if it turns out to bind locally, in which case it | |
1773 | should ideally be replaced with section's symndx + addend). */ | |
1774 | struct elf_link_hash_entry *h; | |
1775 | } d; | |
1776 | /* The addend of the relocation that references the symbol. */ | |
1777 | bfd_vma addend; | |
48d502e1 | 1778 | |
c96a8570 BS |
1779 | /* The fields above are used to identify an entry. The fields below |
1780 | contain information on how an entry is used and, later on, which | |
1781 | locations it was assigned. */ | |
1782 | /* The following 2 fields record whether the symbol+addend above was | |
1783 | ever referenced with a GOT relocation. The 17M4 suffix indicates a | |
1784 | GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */ | |
1785 | unsigned got17m4; | |
1786 | unsigned gothilo; | |
1787 | /* Whether a FUNCDESC relocation references symbol+addend. */ | |
1788 | unsigned fd; | |
1789 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ | |
1790 | unsigned fdgot17m4; | |
1791 | unsigned fdgothilo; | |
1792 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ | |
1793 | unsigned fdgoff17m4; | |
1794 | unsigned fdgoffhilo; | |
1795 | /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or | |
1796 | GOTOFFHI relocations. The addend doesn't really matter, since we | |
1797 | envision that this will only be used to check whether the symbol | |
1798 | is mapped to the same segment as the got. */ | |
1799 | unsigned gotoff; | |
1800 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ | |
1801 | unsigned call; | |
1802 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE | |
1803 | relocation. */ | |
1804 | unsigned sym; | |
1805 | /* Whether we need a PLT entry for a symbol. Should be implied by | |
1806 | something like: | |
1807 | (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */ | |
1808 | unsigned plt:1; | |
1809 | /* Whether a function descriptor should be created in this link unit | |
1810 | for symbol+addend. Should be implied by something like: | |
1811 | (plt || fdgotoff17m4 || fdgotofflohi | |
1812 | || ((fd || fdgot17m4 || fdgothilo) | |
07d6d2b8 | 1813 | && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
c96a8570 BS |
1814 | unsigned privfd:1; |
1815 | /* Whether a lazy PLT entry is needed for this symbol+addend. | |
1816 | Should be implied by something like: | |
1817 | (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h) | |
1818 | && ! (info->flags & DF_BIND_NOW)) */ | |
1819 | unsigned lazyplt:1; | |
1820 | /* Whether we've already emitted GOT relocations and PLT entries as | |
1821 | needed for this symbol. */ | |
1822 | unsigned done:1; | |
48d502e1 | 1823 | |
cb88ce9f | 1824 | /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE |
c96a8570 BS |
1825 | relocations referencing the symbol. */ |
1826 | unsigned relocs32, relocsfd, relocsfdv; | |
48d502e1 | 1827 | |
c96a8570 BS |
1828 | /* The number of .rofixups entries and dynamic relocations allocated |
1829 | for this symbol, minus any that might have already been used. */ | |
1830 | unsigned fixups, dynrelocs; | |
48d502e1 | 1831 | |
c96a8570 BS |
1832 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
1833 | function descriptor's address, and to a function descriptor, | |
1834 | respectively. Should be zero if unassigned. The offsets are | |
1835 | counted from the value that will be assigned to the PIC register, | |
1836 | not from the beginning of the .got section. */ | |
1837 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; | |
1838 | /* The offsets of the PLT entries assigned to symbol+addend, | |
1839 | non-lazy and lazy, respectively. If unassigned, should be | |
1840 | (bfd_vma)-1. */ | |
1841 | bfd_vma plt_entry, lzplt_entry; | |
1842 | }; | |
48d502e1 | 1843 | |
c96a8570 BS |
1844 | /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */ |
1845 | static hashval_t | |
1846 | bfinfdpic_relocs_info_hash (const void *entry_) | |
1847 | { | |
1848 | const struct bfinfdpic_relocs_info *entry = entry_; | |
48d502e1 | 1849 | |
c96a8570 BS |
1850 | return (entry->symndx == -1 |
1851 | ? (long) entry->d.h->root.root.hash | |
1852 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; | |
1853 | } | |
f4707595 | 1854 | |
c96a8570 BS |
1855 | /* Test whether the key fields of two bfinfdpic_relocs_info entries are |
1856 | identical. */ | |
1857 | static int | |
1858 | bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2) | |
0f64bb02 | 1859 | { |
c96a8570 BS |
1860 | const struct bfinfdpic_relocs_info *e1 = entry1; |
1861 | const struct bfinfdpic_relocs_info *e2 = entry2; | |
0f64bb02 | 1862 | |
c96a8570 BS |
1863 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
1864 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); | |
1865 | } | |
48d502e1 | 1866 | |
c96a8570 BS |
1867 | /* Find or create an entry in a hash table HT that matches the key |
1868 | fields of the given ENTRY. If it's not found, memory for a new | |
1869 | entry is allocated in ABFD's obstack. */ | |
1870 | static struct bfinfdpic_relocs_info * | |
1871 | bfinfdpic_relocs_info_find (struct htab *ht, | |
1872 | bfd *abfd, | |
1873 | const struct bfinfdpic_relocs_info *entry, | |
1874 | enum insert_option insert) | |
1875 | { | |
83fd9437 JZ |
1876 | struct bfinfdpic_relocs_info **loc; |
1877 | ||
1878 | if (!ht) | |
1879 | return NULL; | |
1880 | ||
1881 | loc = (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert); | |
0f64bb02 | 1882 | |
c96a8570 BS |
1883 | if (! loc) |
1884 | return NULL; | |
0f64bb02 | 1885 | |
c96a8570 BS |
1886 | if (*loc) |
1887 | return *loc; | |
0f64bb02 | 1888 | |
c96a8570 | 1889 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
0f64bb02 | 1890 | |
c96a8570 BS |
1891 | if (! *loc) |
1892 | return *loc; | |
0f64bb02 | 1893 | |
c96a8570 BS |
1894 | (*loc)->symndx = entry->symndx; |
1895 | (*loc)->d = entry->d; | |
1896 | (*loc)->addend = entry->addend; | |
1897 | (*loc)->plt_entry = (bfd_vma)-1; | |
1898 | (*loc)->lzplt_entry = (bfd_vma)-1; | |
0f64bb02 | 1899 | |
c96a8570 BS |
1900 | return *loc; |
1901 | } | |
48d502e1 | 1902 | |
c96a8570 BS |
1903 | /* Obtain the address of the entry in HT associated with H's symbol + |
1904 | addend, creating a new entry if none existed. ABFD is only used | |
1905 | for memory allocation purposes. */ | |
1906 | inline static struct bfinfdpic_relocs_info * | |
1907 | bfinfdpic_relocs_info_for_global (struct htab *ht, | |
2c3fc389 NC |
1908 | bfd *abfd, |
1909 | struct elf_link_hash_entry *h, | |
1910 | bfd_vma addend, | |
1911 | enum insert_option insert) | |
c96a8570 BS |
1912 | { |
1913 | struct bfinfdpic_relocs_info entry; | |
0f64bb02 | 1914 | |
c96a8570 BS |
1915 | entry.symndx = -1; |
1916 | entry.d.h = h; | |
1917 | entry.addend = addend; | |
f4707595 | 1918 | |
c96a8570 BS |
1919 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1920 | } | |
48d502e1 | 1921 | |
c96a8570 BS |
1922 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
1923 | local symbol of the input bfd ABFD, plus the addend, creating a new | |
1924 | entry if none existed. */ | |
1925 | inline static struct bfinfdpic_relocs_info * | |
1926 | bfinfdpic_relocs_info_for_local (struct htab *ht, | |
1927 | bfd *abfd, | |
1928 | long symndx, | |
1929 | bfd_vma addend, | |
1930 | enum insert_option insert) | |
1931 | { | |
1932 | struct bfinfdpic_relocs_info entry; | |
ab96bf03 | 1933 | |
c96a8570 BS |
1934 | entry.symndx = symndx; |
1935 | entry.d.abfd = abfd; | |
1936 | entry.addend = addend; | |
48d502e1 | 1937 | |
c96a8570 BS |
1938 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1939 | } | |
48d502e1 | 1940 | |
c96a8570 BS |
1941 | /* Merge fields set by check_relocs() of two entries that end up being |
1942 | mapped to the same (presumably global) symbol. */ | |
0f64bb02 | 1943 | |
c96a8570 BS |
1944 | inline static void |
1945 | bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2, | |
2c3fc389 | 1946 | struct bfinfdpic_relocs_info const *e1) |
c96a8570 BS |
1947 | { |
1948 | e2->got17m4 |= e1->got17m4; | |
1949 | e2->gothilo |= e1->gothilo; | |
1950 | e2->fd |= e1->fd; | |
1951 | e2->fdgot17m4 |= e1->fdgot17m4; | |
1952 | e2->fdgothilo |= e1->fdgothilo; | |
1953 | e2->fdgoff17m4 |= e1->fdgoff17m4; | |
1954 | e2->fdgoffhilo |= e1->fdgoffhilo; | |
1955 | e2->gotoff |= e1->gotoff; | |
1956 | e2->call |= e1->call; | |
1957 | e2->sym |= e1->sym; | |
1958 | } | |
48d502e1 | 1959 | |
c96a8570 BS |
1960 | /* Every block of 65535 lazy PLT entries shares a single call to the |
1961 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # | |
1962 | 32767, counting from 0). All other lazy PLT entries branch to it | |
1963 | in a single instruction. */ | |
48d502e1 | 1964 | |
c96a8570 BS |
1965 | #define LZPLT_RESOLVER_EXTRA 10 |
1966 | #define LZPLT_NORMAL_SIZE 6 | |
1967 | #define LZPLT_ENTRIES 1362 | |
48d502e1 | 1968 | |
c96a8570 BS |
1969 | #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA) |
1970 | #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2) | |
48d502e1 | 1971 | |
c96a8570 | 1972 | /* Add a dynamic relocation to the SRELOC section. */ |
48d502e1 | 1973 | |
c96a8570 BS |
1974 | inline static bfd_vma |
1975 | _bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, | |
1976 | int reloc_type, long dynindx, bfd_vma addend, | |
1977 | struct bfinfdpic_relocs_info *entry) | |
1978 | { | |
1979 | Elf_Internal_Rela outrel; | |
1980 | bfd_vma reloc_offset; | |
0f64bb02 | 1981 | |
c96a8570 BS |
1982 | outrel.r_offset = offset; |
1983 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); | |
1984 | outrel.r_addend = addend; | |
48d502e1 | 1985 | |
c96a8570 BS |
1986 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
1987 | BFD_ASSERT (reloc_offset < sreloc->size); | |
1988 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
1989 | sreloc->contents + reloc_offset); | |
1990 | sreloc->reloc_count++; | |
48d502e1 | 1991 | |
c96a8570 BS |
1992 | /* If the entry's index is zero, this relocation was probably to a |
1993 | linkonce section that got discarded. We reserved a dynamic | |
1994 | relocation, but it was for another entry than the one we got at | |
1995 | the time of emitting the relocation. Unfortunately there's no | |
1996 | simple way for us to catch this situation, since the relocation | |
1997 | is cleared right before calling relocate_section, at which point | |
1998 | we no longer know what the relocation used to point to. */ | |
1999 | if (entry->symndx) | |
2000 | { | |
2001 | BFD_ASSERT (entry->dynrelocs > 0); | |
2002 | entry->dynrelocs--; | |
2003 | } | |
48d502e1 | 2004 | |
c96a8570 BS |
2005 | return reloc_offset; |
2006 | } | |
0f64bb02 | 2007 | |
c96a8570 | 2008 | /* Add a fixup to the ROFIXUP section. */ |
48d502e1 | 2009 | |
c96a8570 BS |
2010 | static bfd_vma |
2011 | _bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, | |
2c3fc389 | 2012 | struct bfinfdpic_relocs_info *entry) |
c96a8570 BS |
2013 | { |
2014 | bfd_vma fixup_offset; | |
8aafe8b4 | 2015 | |
c96a8570 BS |
2016 | if (rofixup->flags & SEC_EXCLUDE) |
2017 | return -1; | |
0f64bb02 | 2018 | |
c96a8570 BS |
2019 | fixup_offset = rofixup->reloc_count * 4; |
2020 | if (rofixup->contents) | |
2021 | { | |
2022 | BFD_ASSERT (fixup_offset < rofixup->size); | |
2023 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); | |
2024 | } | |
2025 | rofixup->reloc_count++; | |
0f64bb02 | 2026 | |
c96a8570 BS |
2027 | if (entry && entry->symndx) |
2028 | { | |
2029 | /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc | |
2030 | above. */ | |
2031 | BFD_ASSERT (entry->fixups > 0); | |
2032 | entry->fixups--; | |
2033 | } | |
f4707595 | 2034 | |
c96a8570 BS |
2035 | return fixup_offset; |
2036 | } | |
0f64bb02 | 2037 | |
c96a8570 BS |
2038 | /* Find the segment number in which OSEC, and output section, is |
2039 | located. */ | |
ca889129 | 2040 | |
c96a8570 BS |
2041 | static unsigned |
2042 | _bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec) | |
2043 | { | |
2044 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); | |
0f64bb02 | 2045 | |
c96a8570 BS |
2046 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
2047 | } | |
2048 | ||
2049 | inline static bfd_boolean | |
2050 | _bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) | |
2051 | { | |
2052 | unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec); | |
2053 | ||
2054 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); | |
2055 | } | |
2056 | ||
2057 | /* Generate relocations for GOT entries, function descriptors, and | |
2058 | code for PLT and lazy PLT entries. */ | |
2059 | ||
2060 | inline static bfd_boolean | |
2061 | _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry, | |
2062 | bfd *output_bfd, | |
2063 | struct bfd_link_info *info, | |
2064 | asection *sec, | |
2065 | Elf_Internal_Sym *sym, | |
2066 | bfd_vma addend) | |
c96a8570 | 2067 | { |
2c3fc389 | 2068 | bfd_vma fd_lazy_rel_offset = (bfd_vma) -1; |
c96a8570 BS |
2069 | int dynindx = -1; |
2070 | ||
2071 | if (entry->done) | |
2072 | return TRUE; | |
2073 | entry->done = 1; | |
2074 | ||
2075 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) | |
2076 | { | |
2077 | /* If the symbol is dynamic, consider it for dynamic | |
2078 | relocations, otherwise decay to section + offset. */ | |
2079 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) | |
2080 | dynindx = entry->d.h->dynindx; | |
2081 | else | |
2082 | { | |
6a9adeca BS |
2083 | if (sec |
2084 | && sec->output_section | |
c96a8570 BS |
2085 | && ! bfd_is_abs_section (sec->output_section) |
2086 | && ! bfd_is_und_section (sec->output_section)) | |
2087 | dynindx = elf_section_data (sec->output_section)->dynindx; | |
2088 | else | |
2089 | dynindx = 0; | |
2090 | } | |
2091 | } | |
2092 | ||
2093 | /* Generate relocation for GOT entry pointing to the symbol. */ | |
2094 | if (entry->got_entry) | |
2095 | { | |
2096 | int idx = dynindx; | |
2097 | bfd_vma ad = addend; | |
2098 | ||
2099 | /* If the symbol is dynamic but binds locally, use | |
2100 | section+offset. */ | |
2101 | if (sec && (entry->symndx != -1 | |
2102 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2103 | { | |
2104 | if (entry->symndx == -1) | |
2105 | ad += entry->d.h->root.u.def.value; | |
2106 | else | |
2107 | ad += sym->st_value; | |
2108 | ad += sec->output_offset; | |
2109 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2110 | idx = elf_section_data (sec->output_section)->dynindx; | |
2111 | else | |
2112 | idx = 0; | |
2113 | } | |
2114 | ||
2115 | /* If we're linking an executable at a fixed address, we can | |
2116 | omit the dynamic relocation as long as the symbol is local to | |
2117 | this module. */ | |
3cbc1e5e | 2118 | if (bfd_link_pde (info) |
c96a8570 BS |
2119 | && (entry->symndx != -1 |
2120 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2121 | { | |
2122 | if (sec) | |
2123 | ad += sec->output_section->vma; | |
2124 | if (entry->symndx != -1 | |
2125 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2126 | _bfinfdpic_add_rofixup (output_bfd, | |
2127 | bfinfdpic_gotfixup_section (info), | |
2128 | bfinfdpic_got_section (info)->output_section | |
2129 | ->vma | |
2130 | + bfinfdpic_got_section (info)->output_offset | |
2131 | + bfinfdpic_got_initial_offset (info) | |
2132 | + entry->got_entry, entry); | |
2133 | } | |
2134 | else | |
2135 | _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info), | |
2136 | _bfd_elf_section_offset | |
2137 | (output_bfd, info, | |
2138 | bfinfdpic_got_section (info), | |
2139 | bfinfdpic_got_initial_offset (info) | |
2140 | + entry->got_entry) | |
2141 | + bfinfdpic_got_section (info) | |
2142 | ->output_section->vma | |
2143 | + bfinfdpic_got_section (info)->output_offset, | |
cb88ce9f | 2144 | R_BFIN_BYTE4_DATA, idx, ad, entry); |
c96a8570 BS |
2145 | |
2146 | bfd_put_32 (output_bfd, ad, | |
2147 | bfinfdpic_got_section (info)->contents | |
2148 | + bfinfdpic_got_initial_offset (info) | |
2149 | + entry->got_entry); | |
2150 | } | |
2151 | ||
2152 | /* Generate relocation for GOT entry pointing to a canonical | |
2153 | function descriptor. */ | |
2154 | if (entry->fdgot_entry) | |
2155 | { | |
2156 | int reloc, idx; | |
2157 | bfd_vma ad = 0; | |
2158 | ||
2159 | if (! (entry->symndx == -1 | |
2160 | && entry->d.h->root.type == bfd_link_hash_undefweak | |
2161 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2162 | { | |
2163 | /* If the symbol is dynamic and there may be dynamic symbol | |
2164 | resolution because we are, or are linked with, a shared | |
2165 | library, emit a FUNCDESC relocation such that the dynamic | |
2166 | linker will allocate the function descriptor. If the | |
2167 | symbol needs a non-local function descriptor but binds | |
2168 | locally (e.g., its visibility is protected, emit a | |
2169 | dynamic relocation decayed to section+offset. */ | |
2170 | if (entry->symndx == -1 | |
2171 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h) | |
2172 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h) | |
3cbc1e5e | 2173 | && !bfd_link_pde (info)) |
c96a8570 BS |
2174 | { |
2175 | reloc = R_BFIN_FUNCDESC; | |
2176 | idx = elf_section_data (entry->d.h->root.u.def.section | |
2177 | ->output_section)->dynindx; | |
2178 | ad = entry->d.h->root.u.def.section->output_offset | |
2179 | + entry->d.h->root.u.def.value; | |
2180 | } | |
2181 | else if (entry->symndx == -1 | |
2182 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) | |
2183 | { | |
2184 | reloc = R_BFIN_FUNCDESC; | |
2185 | idx = dynindx; | |
2186 | ad = addend; | |
2187 | if (ad) | |
2188 | return FALSE; | |
2189 | } | |
2190 | else | |
2191 | { | |
2192 | /* Otherwise, we know we have a private function descriptor, | |
2193 | so reference it directly. */ | |
2194 | if (elf_hash_table (info)->dynamic_sections_created) | |
2195 | BFD_ASSERT (entry->privfd); | |
cb88ce9f | 2196 | reloc = R_BFIN_BYTE4_DATA; |
c96a8570 BS |
2197 | idx = elf_section_data (bfinfdpic_got_section (info) |
2198 | ->output_section)->dynindx; | |
2199 | ad = bfinfdpic_got_section (info)->output_offset | |
2200 | + bfinfdpic_got_initial_offset (info) + entry->fd_entry; | |
2201 | } | |
2202 | ||
2203 | /* If there is room for dynamic symbol resolution, emit the | |
2204 | dynamic relocation. However, if we're linking an | |
2205 | executable at a fixed location, we won't have emitted a | |
2206 | dynamic symbol entry for the got section, so idx will be | |
2207 | zero, which means we can and should compute the address | |
2208 | of the private descriptor ourselves. */ | |
3cbc1e5e | 2209 | if (bfd_link_pde (info) |
c96a8570 BS |
2210 | && (entry->symndx != -1 |
2211 | || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) | |
2212 | { | |
2213 | ad += bfinfdpic_got_section (info)->output_section->vma; | |
2214 | _bfinfdpic_add_rofixup (output_bfd, | |
2215 | bfinfdpic_gotfixup_section (info), | |
2216 | bfinfdpic_got_section (info) | |
2217 | ->output_section->vma | |
2218 | + bfinfdpic_got_section (info) | |
2219 | ->output_offset | |
2220 | + bfinfdpic_got_initial_offset (info) | |
2221 | + entry->fdgot_entry, entry); | |
2222 | } | |
2223 | else | |
2224 | _bfinfdpic_add_dyn_reloc (output_bfd, | |
2225 | bfinfdpic_gotrel_section (info), | |
2226 | _bfd_elf_section_offset | |
2227 | (output_bfd, info, | |
2228 | bfinfdpic_got_section (info), | |
2229 | bfinfdpic_got_initial_offset (info) | |
2230 | + entry->fdgot_entry) | |
2231 | + bfinfdpic_got_section (info) | |
2232 | ->output_section->vma | |
2233 | + bfinfdpic_got_section (info) | |
2234 | ->output_offset, | |
2235 | reloc, idx, ad, entry); | |
2236 | } | |
f4707595 | 2237 | |
c96a8570 BS |
2238 | bfd_put_32 (output_bfd, ad, |
2239 | bfinfdpic_got_section (info)->contents | |
2240 | + bfinfdpic_got_initial_offset (info) | |
2241 | + entry->fdgot_entry); | |
2242 | } | |
2243 | ||
2244 | /* Generate relocation to fill in a private function descriptor in | |
2245 | the GOT. */ | |
2246 | if (entry->fd_entry) | |
2247 | { | |
2248 | int idx = dynindx; | |
2249 | bfd_vma ad = addend; | |
2250 | bfd_vma ofst; | |
2251 | long lowword, highword; | |
2252 | ||
2253 | /* If the symbol is dynamic but binds locally, use | |
2254 | section+offset. */ | |
2255 | if (sec && (entry->symndx != -1 | |
2256 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2257 | { | |
2258 | if (entry->symndx == -1) | |
2259 | ad += entry->d.h->root.u.def.value; | |
2260 | else | |
2261 | ad += sym->st_value; | |
2262 | ad += sec->output_offset; | |
2263 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2264 | idx = elf_section_data (sec->output_section)->dynindx; | |
2265 | else | |
2266 | idx = 0; | |
48d502e1 | 2267 | } |
f4707595 | 2268 | |
c96a8570 BS |
2269 | /* If we're linking an executable at a fixed address, we can |
2270 | omit the dynamic relocation as long as the symbol is local to | |
2271 | this module. */ | |
3cbc1e5e | 2272 | if (bfd_link_pde (info) |
c96a8570 | 2273 | && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) |
48d502e1 | 2274 | { |
c96a8570 BS |
2275 | if (sec) |
2276 | ad += sec->output_section->vma; | |
2277 | ofst = 0; | |
2278 | if (entry->symndx != -1 | |
2279 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2280 | { | |
2281 | _bfinfdpic_add_rofixup (output_bfd, | |
2282 | bfinfdpic_gotfixup_section (info), | |
2283 | bfinfdpic_got_section (info) | |
2284 | ->output_section->vma | |
2285 | + bfinfdpic_got_section (info) | |
2286 | ->output_offset | |
2287 | + bfinfdpic_got_initial_offset (info) | |
2288 | + entry->fd_entry, entry); | |
2289 | _bfinfdpic_add_rofixup (output_bfd, | |
2290 | bfinfdpic_gotfixup_section (info), | |
2291 | bfinfdpic_got_section (info) | |
2292 | ->output_section->vma | |
2293 | + bfinfdpic_got_section (info) | |
2294 | ->output_offset | |
2295 | + bfinfdpic_got_initial_offset (info) | |
2296 | + entry->fd_entry + 4, entry); | |
2297 | } | |
2298 | } | |
2299 | else | |
2300 | { | |
2301 | ofst | |
2302 | = _bfinfdpic_add_dyn_reloc (output_bfd, | |
2303 | entry->lazyplt | |
2304 | ? bfinfdpic_pltrel_section (info) | |
2305 | : bfinfdpic_gotrel_section (info), | |
2306 | _bfd_elf_section_offset | |
2307 | (output_bfd, info, | |
2308 | bfinfdpic_got_section (info), | |
2309 | bfinfdpic_got_initial_offset (info) | |
2310 | + entry->fd_entry) | |
2311 | + bfinfdpic_got_section (info) | |
2312 | ->output_section->vma | |
2313 | + bfinfdpic_got_section (info) | |
2314 | ->output_offset, | |
2315 | R_BFIN_FUNCDESC_VALUE, idx, ad, entry); | |
48d502e1 | 2316 | } |
f4707595 | 2317 | |
c96a8570 BS |
2318 | /* If we've omitted the dynamic relocation, just emit the fixed |
2319 | addresses of the symbol and of the local GOT base offset. */ | |
3cbc1e5e | 2320 | if (bfd_link_pde (info) |
0e1862bb L |
2321 | && sec |
2322 | && sec->output_section) | |
48d502e1 | 2323 | { |
c96a8570 BS |
2324 | lowword = ad; |
2325 | highword = bfinfdpic_got_section (info)->output_section->vma | |
2326 | + bfinfdpic_got_section (info)->output_offset | |
2327 | + bfinfdpic_got_initial_offset (info); | |
2328 | } | |
2329 | else if (entry->lazyplt) | |
2330 | { | |
2331 | if (ad) | |
2332 | return FALSE; | |
f4707595 | 2333 | |
c96a8570 | 2334 | fd_lazy_rel_offset = ofst; |
f4707595 | 2335 | |
c96a8570 BS |
2336 | /* A function descriptor used for lazy or local resolving is |
2337 | initialized such that its high word contains the output | |
2338 | section index in which the PLT entries are located, and | |
2339 | the low word contains the address of the lazy PLT entry | |
2340 | entry point, that must be within the memory region | |
2341 | assigned to that section. */ | |
2342 | lowword = entry->lzplt_entry + 4 | |
2343 | + bfinfdpic_plt_section (info)->output_offset | |
2344 | + bfinfdpic_plt_section (info)->output_section->vma; | |
2345 | highword = _bfinfdpic_osec_to_segment | |
2346 | (output_bfd, bfinfdpic_plt_section (info)->output_section); | |
2347 | } | |
2348 | else | |
2349 | { | |
2350 | /* A function descriptor for a local function gets the index | |
2351 | of the section. For a non-local function, it's | |
2352 | disregarded. */ | |
2353 | lowword = ad; | |
6a9adeca BS |
2354 | if (sec == NULL |
2355 | || (entry->symndx == -1 && entry->d.h->dynindx != -1 | |
2356 | && entry->d.h->dynindx == idx)) | |
c96a8570 BS |
2357 | highword = 0; |
2358 | else | |
2359 | highword = _bfinfdpic_osec_to_segment | |
2360 | (output_bfd, sec->output_section); | |
48d502e1 | 2361 | } |
f4707595 | 2362 | |
c96a8570 BS |
2363 | bfd_put_32 (output_bfd, lowword, |
2364 | bfinfdpic_got_section (info)->contents | |
2365 | + bfinfdpic_got_initial_offset (info) | |
2366 | + entry->fd_entry); | |
2367 | bfd_put_32 (output_bfd, highword, | |
2368 | bfinfdpic_got_section (info)->contents | |
2369 | + bfinfdpic_got_initial_offset (info) | |
2370 | + entry->fd_entry + 4); | |
2371 | } | |
2372 | ||
2373 | /* Generate code for the PLT entry. */ | |
2374 | if (entry->plt_entry != (bfd_vma) -1) | |
2375 | { | |
2376 | bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents | |
2377 | + entry->plt_entry; | |
2378 | ||
2379 | BFD_ASSERT (entry->fd_entry); | |
2380 | ||
2381 | /* Figure out what kind of PLT entry we need, depending on the | |
2382 | location of the function descriptor within the GOT. */ | |
2383 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
2384 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
48d502e1 | 2385 | { |
c96a8570 BS |
2386 | /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */ |
2387 | bfd_put_32 (output_bfd, | |
2388 | 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000), | |
2389 | plt_code); | |
2390 | bfd_put_32 (output_bfd, | |
2391 | 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000), | |
2392 | plt_code + 4); | |
2393 | plt_code += 8; | |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | /* P1.L = fd_entry; P1.H = fd_entry; | |
2398 | P3 = P3 + P1; | |
2399 | P1 = [P3]; | |
2400 | P3 = [P3 + 4]; */ | |
2401 | bfd_put_32 (output_bfd, | |
2402 | 0xe109 | (entry->fd_entry << 16), | |
2403 | plt_code); | |
2404 | bfd_put_32 (output_bfd, | |
2405 | 0xe149 | (entry->fd_entry & 0xFFFF0000), | |
2406 | plt_code + 4); | |
2407 | bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8); | |
2408 | bfd_put_16 (output_bfd, 0x9159, plt_code + 10); | |
2409 | bfd_put_16 (output_bfd, 0xac5b, plt_code + 12); | |
2410 | plt_code += 14; | |
2411 | } | |
2412 | /* JUMP (P1) */ | |
2413 | bfd_put_16 (output_bfd, 0x0051, plt_code); | |
2414 | } | |
f4707595 | 2415 | |
c96a8570 BS |
2416 | /* Generate code for the lazy PLT entry. */ |
2417 | if (entry->lzplt_entry != (bfd_vma) -1) | |
2418 | { | |
2419 | bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents | |
2420 | + entry->lzplt_entry; | |
2421 | bfd_vma resolverStub_addr; | |
0f64bb02 | 2422 | |
c96a8570 BS |
2423 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
2424 | lzplt_code += 4; | |
0f64bb02 | 2425 | |
c96a8570 BS |
2426 | resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE |
2427 | * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC; | |
2428 | if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info)) | |
2429 | resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA; | |
0f64bb02 | 2430 | |
c96a8570 | 2431 | if (entry->lzplt_entry == resolverStub_addr) |
0f64bb02 | 2432 | { |
c96a8570 BS |
2433 | /* This is a lazy PLT entry that includes a resolver call. |
2434 | P2 = [P3]; | |
2435 | R3 = [P3 + 4]; | |
2436 | JUMP (P2); */ | |
2437 | bfd_put_32 (output_bfd, | |
2438 | 0xa05b915a, | |
2439 | lzplt_code); | |
2440 | bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4); | |
2441 | } | |
2442 | else | |
2443 | { | |
2444 | /* JUMP.S resolverStub */ | |
2445 | bfd_put_16 (output_bfd, | |
2446 | 0x2000 | |
2447 | | (((resolverStub_addr - entry->lzplt_entry) | |
2448 | / 2) & (((bfd_vma)1 << 12) - 1)), | |
2449 | lzplt_code); | |
2450 | } | |
2451 | } | |
0f64bb02 | 2452 | |
c96a8570 BS |
2453 | return TRUE; |
2454 | } | |
2455 | \f | |
2456 | /* Relocate an Blackfin ELF section. | |
48d502e1 | 2457 | |
c96a8570 BS |
2458 | The RELOCATE_SECTION function is called by the new ELF backend linker |
2459 | to handle the relocations for a section. | |
48d502e1 | 2460 | |
c96a8570 BS |
2461 | The relocs are always passed as Rela structures; if the section |
2462 | actually uses Rel structures, the r_addend field will always be | |
2463 | zero. | |
48d502e1 | 2464 | |
c96a8570 BS |
2465 | This function is responsible for adjusting the section contents as |
2466 | necessary, and (if using Rela relocs and generating a relocatable | |
2467 | output file) adjusting the reloc addend as necessary. | |
48d502e1 | 2468 | |
c96a8570 BS |
2469 | This function does not have to worry about setting the reloc |
2470 | address or the reloc symbol index. | |
48d502e1 | 2471 | |
c96a8570 | 2472 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
48d502e1 | 2473 | |
c96a8570 BS |
2474 | LOCAL_SECTIONS is an array giving the section in the input file |
2475 | corresponding to the st_shndx field of each local symbol. | |
48d502e1 | 2476 | |
c96a8570 BS |
2477 | The global hash table entry for the global symbols can be found |
2478 | via elf_sym_hashes (input_bfd). | |
48d502e1 | 2479 | |
c96a8570 BS |
2480 | When generating relocatable output, this function must handle |
2481 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
2482 | going to be the section symbol corresponding to the output | |
2483 | section, which means that the addend must be adjusted | |
2484 | accordingly. */ | |
48d502e1 BS |
2485 | |
2486 | static bfd_boolean | |
c96a8570 BS |
2487 | bfinfdpic_relocate_section (bfd * output_bfd, |
2488 | struct bfd_link_info *info, | |
2489 | bfd * input_bfd, | |
2490 | asection * input_section, | |
2491 | bfd_byte * contents, | |
2492 | Elf_Internal_Rela * relocs, | |
2493 | Elf_Internal_Sym * local_syms, | |
2494 | asection ** local_sections) | |
48d502e1 | 2495 | { |
48d502e1 BS |
2496 | Elf_Internal_Shdr *symtab_hdr; |
2497 | struct elf_link_hash_entry **sym_hashes; | |
48d502e1 BS |
2498 | Elf_Internal_Rela *rel; |
2499 | Elf_Internal_Rela *relend; | |
c96a8570 BS |
2500 | unsigned isec_segment, got_segment, plt_segment, |
2501 | check_segment[2]; | |
0e1862bb | 2502 | int silence_segment_error = !bfd_link_pic (info); |
48d502e1 | 2503 | |
c96a8570 | 2504 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
48d502e1 | 2505 | sym_hashes = elf_sym_hashes (input_bfd); |
c96a8570 | 2506 | relend = relocs + input_section->reloc_count; |
48d502e1 | 2507 | |
c96a8570 BS |
2508 | isec_segment = _bfinfdpic_osec_to_segment (output_bfd, |
2509 | input_section->output_section); | |
2510 | if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info)) | |
2511 | got_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2512 | bfinfdpic_got_section (info) | |
2513 | ->output_section); | |
2514 | else | |
2515 | got_segment = -1; | |
2516 | if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created) | |
2517 | plt_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2518 | bfinfdpic_plt_section (info) | |
2519 | ->output_section); | |
2520 | else | |
2521 | plt_segment = -1; | |
48d502e1 | 2522 | |
c96a8570 | 2523 | for (rel = relocs; rel < relend; rel ++) |
48d502e1 | 2524 | { |
48d502e1 BS |
2525 | reloc_howto_type *howto; |
2526 | unsigned long r_symndx; | |
48d502e1 BS |
2527 | Elf_Internal_Sym *sym; |
2528 | asection *sec; | |
c96a8570 BS |
2529 | struct elf_link_hash_entry *h; |
2530 | bfd_vma relocation; | |
48d502e1 | 2531 | bfd_reloc_status_type r; |
c96a8570 BS |
2532 | const char * name = NULL; |
2533 | int r_type; | |
2534 | asection *osec; | |
2535 | struct bfinfdpic_relocs_info *picrel; | |
2536 | bfd_vma orig_addend = rel->r_addend; | |
48d502e1 BS |
2537 | |
2538 | r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 2539 | |
c96a8570 BS |
2540 | if (r_type == R_BFIN_GNU_VTINHERIT |
2541 | || r_type == R_BFIN_GNU_VTENTRY) | |
48d502e1 BS |
2542 | continue; |
2543 | ||
c96a8570 | 2544 | r_symndx = ELF32_R_SYM (rel->r_info); |
48d502e1 BS |
2545 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
2546 | if (howto == NULL) | |
2547 | { | |
2548 | bfd_set_error (bfd_error_bad_value); | |
2549 | return FALSE; | |
2550 | } | |
48d502e1 | 2551 | |
c96a8570 BS |
2552 | h = NULL; |
2553 | sym = NULL; | |
2554 | sec = NULL; | |
2555 | ||
2556 | if (r_symndx < symtab_hdr->sh_info) | |
2557 | { | |
2558 | sym = local_syms + r_symndx; | |
2559 | osec = sec = local_sections [r_symndx]; | |
2560 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2561 | ||
2562 | name = bfd_elf_string_from_elf_section | |
2563 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
fd361982 | 2564 | name = name == NULL ? bfd_section_name (sec) : name; |
c96a8570 BS |
2565 | } |
2566 | else | |
2567 | { | |
62d887d4 | 2568 | bfd_boolean warned, ignored; |
c96a8570 BS |
2569 | bfd_boolean unresolved_reloc; |
2570 | ||
2571 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2572 | r_symndx, symtab_hdr, sym_hashes, | |
2573 | h, sec, relocation, | |
62d887d4 | 2574 | unresolved_reloc, warned, ignored); |
c96a8570 BS |
2575 | osec = sec; |
2576 | } | |
2577 | ||
dbaa2011 | 2578 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2579 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2580 | rel, 1, relend, howto, 0, contents); |
c96a8570 | 2581 | |
0e1862bb | 2582 | if (bfd_link_relocatable (info)) |
c96a8570 BS |
2583 | continue; |
2584 | ||
2585 | if (h != NULL | |
2586 | && (h->root.type == bfd_link_hash_defined | |
2587 | || h->root.type == bfd_link_hash_defweak) | |
2588 | && !BFINFDPIC_SYM_LOCAL (info, h)) | |
2589 | { | |
2590 | osec = sec = NULL; | |
2591 | relocation = 0; | |
2592 | } | |
2593 | ||
2594 | switch (r_type) | |
2595 | { | |
cb88ce9f BS |
2596 | case R_BFIN_PCREL24: |
2597 | case R_BFIN_PCREL24_JUMP_L: | |
2598 | case R_BFIN_BYTE4_DATA: | |
c96a8570 BS |
2599 | if (! IS_FDPIC (output_bfd)) |
2600 | goto non_fdpic; | |
1a0670f3 | 2601 | /* Fall through. */ |
c96a8570 BS |
2602 | |
2603 | case R_BFIN_GOT17M4: | |
2604 | case R_BFIN_GOTHI: | |
2605 | case R_BFIN_GOTLO: | |
2606 | case R_BFIN_FUNCDESC_GOT17M4: | |
2607 | case R_BFIN_FUNCDESC_GOTHI: | |
2608 | case R_BFIN_FUNCDESC_GOTLO: | |
2609 | case R_BFIN_GOTOFF17M4: | |
2610 | case R_BFIN_GOTOFFHI: | |
2611 | case R_BFIN_GOTOFFLO: | |
2612 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2613 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2614 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2615 | case R_BFIN_FUNCDESC: | |
2616 | case R_BFIN_FUNCDESC_VALUE: | |
2617 | if (h != NULL) | |
2618 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info | |
2619 | (info), input_bfd, h, | |
2620 | orig_addend, INSERT); | |
2621 | else | |
2622 | /* In order to find the entry we created before, we must | |
2623 | use the original addend, not the one that may have been | |
2624 | modified by _bfd_elf_rela_local_sym(). */ | |
2625 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
2626 | (info), input_bfd, r_symndx, | |
2627 | orig_addend, INSERT); | |
2628 | if (! picrel) | |
2629 | return FALSE; | |
2630 | ||
2631 | if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, | |
2632 | osec, sym, | |
2633 | rel->r_addend)) | |
2634 | { | |
4eca0228 | 2635 | _bfd_error_handler |
695344c0 | 2636 | /* xgettext:c-format */ |
2dcf00ce AM |
2637 | (_("%pB: relocation at `%pA+%#" PRIx64 "' " |
2638 | "references symbol `%s' with nonzero addend"), | |
2639 | input_bfd, input_section, (uint64_t) rel->r_offset, name); | |
c96a8570 BS |
2640 | return FALSE; |
2641 | ||
2642 | } | |
48d502e1 | 2643 | |
c96a8570 | 2644 | break; |
ab96bf03 | 2645 | |
c96a8570 BS |
2646 | default: |
2647 | non_fdpic: | |
2648 | picrel = NULL; | |
1d5316ab AM |
2649 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h) |
2650 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
2651 | rel->r_offset) != (bfd_vma) -1) | |
c96a8570 BS |
2652 | { |
2653 | info->callbacks->warning | |
2654 | (info, _("relocation references symbol not defined in the module"), | |
2655 | name, input_bfd, input_section, rel->r_offset); | |
2656 | return FALSE; | |
2657 | } | |
2658 | break; | |
48d502e1 BS |
2659 | } |
2660 | ||
c96a8570 | 2661 | switch (r_type) |
ab96bf03 | 2662 | { |
cb88ce9f BS |
2663 | case R_BFIN_PCREL24: |
2664 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
2665 | check_segment[0] = isec_segment; |
2666 | if (! IS_FDPIC (output_bfd)) | |
2667 | check_segment[1] = isec_segment; | |
2668 | else if (picrel->plt) | |
2669 | { | |
2670 | relocation = bfinfdpic_plt_section (info)->output_section->vma | |
2671 | + bfinfdpic_plt_section (info)->output_offset | |
2672 | + picrel->plt_entry; | |
2673 | check_segment[1] = plt_segment; | |
2674 | } | |
2675 | /* We don't want to warn on calls to undefined weak symbols, | |
2676 | as calls to them must be protected by non-NULL tests | |
2677 | anyway, and unprotected calls would invoke undefined | |
2678 | behavior. */ | |
2679 | else if (picrel->symndx == -1 | |
2680 | && picrel->d.h->root.type == bfd_link_hash_undefweak) | |
2681 | check_segment[1] = check_segment[0]; | |
2682 | else | |
2683 | check_segment[1] = sec | |
2684 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2685 | : (unsigned)-1; | |
2686 | break; | |
ab96bf03 | 2687 | |
c96a8570 BS |
2688 | case R_BFIN_GOT17M4: |
2689 | case R_BFIN_GOTHI: | |
2690 | case R_BFIN_GOTLO: | |
2691 | relocation = picrel->got_entry; | |
2692 | check_segment[0] = check_segment[1] = got_segment; | |
2693 | break; | |
ab96bf03 | 2694 | |
c96a8570 BS |
2695 | case R_BFIN_FUNCDESC_GOT17M4: |
2696 | case R_BFIN_FUNCDESC_GOTHI: | |
2697 | case R_BFIN_FUNCDESC_GOTLO: | |
2698 | relocation = picrel->fdgot_entry; | |
2699 | check_segment[0] = check_segment[1] = got_segment; | |
2700 | break; | |
48d502e1 | 2701 | |
c96a8570 BS |
2702 | case R_BFIN_GOTOFFHI: |
2703 | case R_BFIN_GOTOFF17M4: | |
2704 | case R_BFIN_GOTOFFLO: | |
2705 | relocation -= bfinfdpic_got_section (info)->output_section->vma | |
2706 | + bfinfdpic_got_section (info)->output_offset | |
2707 | + bfinfdpic_got_initial_offset (info); | |
2708 | check_segment[0] = got_segment; | |
2709 | check_segment[1] = sec | |
2710 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2711 | : (unsigned)-1; | |
2712 | break; | |
48d502e1 | 2713 | |
c96a8570 BS |
2714 | case R_BFIN_FUNCDESC_GOTOFF17M4: |
2715 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2716 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2717 | relocation = picrel->fd_entry; | |
2718 | check_segment[0] = check_segment[1] = got_segment; | |
2719 | break; | |
48d502e1 | 2720 | |
c96a8570 | 2721 | case R_BFIN_FUNCDESC: |
48d502e1 | 2722 | { |
c96a8570 BS |
2723 | int dynindx; |
2724 | bfd_vma addend = rel->r_addend; | |
48d502e1 | 2725 | |
c96a8570 BS |
2726 | if (! (h && h->root.type == bfd_link_hash_undefweak |
2727 | && BFINFDPIC_SYM_LOCAL (info, h))) | |
2728 | { | |
2729 | /* If the symbol is dynamic and there may be dynamic | |
2730 | symbol resolution because we are or are linked with a | |
2731 | shared library, emit a FUNCDESC relocation such that | |
2732 | the dynamic linker will allocate the function | |
2733 | descriptor. If the symbol needs a non-local function | |
2734 | descriptor but binds locally (e.g., its visibility is | |
2735 | protected, emit a dynamic relocation decayed to | |
2736 | section+offset. */ | |
2737 | if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h) | |
2738 | && BFINFDPIC_SYM_LOCAL (info, h) | |
3cbc1e5e | 2739 | && !bfd_link_pde (info)) |
c96a8570 BS |
2740 | { |
2741 | dynindx = elf_section_data (h->root.u.def.section | |
2742 | ->output_section)->dynindx; | |
2743 | addend += h->root.u.def.section->output_offset | |
2744 | + h->root.u.def.value; | |
2745 | } | |
2746 | else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)) | |
2747 | { | |
2748 | if (addend) | |
2749 | { | |
2750 | info->callbacks->warning | |
2751 | (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"), | |
2752 | name, input_bfd, input_section, rel->r_offset); | |
2753 | return FALSE; | |
2754 | } | |
2755 | dynindx = h->dynindx; | |
2756 | } | |
2757 | else | |
2758 | { | |
2759 | /* Otherwise, we know we have a private function | |
2760 | descriptor, so reference it directly. */ | |
2761 | BFD_ASSERT (picrel->privfd); | |
cb88ce9f | 2762 | r_type = R_BFIN_BYTE4_DATA; |
c96a8570 BS |
2763 | dynindx = elf_section_data (bfinfdpic_got_section (info) |
2764 | ->output_section)->dynindx; | |
2765 | addend = bfinfdpic_got_section (info)->output_offset | |
2766 | + bfinfdpic_got_initial_offset (info) | |
2767 | + picrel->fd_entry; | |
2768 | } | |
2769 | ||
2770 | /* If there is room for dynamic symbol resolution, emit | |
2771 | the dynamic relocation. However, if we're linking an | |
2772 | executable at a fixed location, we won't have emitted a | |
2773 | dynamic symbol entry for the got section, so idx will | |
2774 | be zero, which means we can and should compute the | |
2775 | address of the private descriptor ourselves. */ | |
3cbc1e5e | 2776 | if (bfd_link_pde (info) |
c96a8570 BS |
2777 | && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h))) |
2778 | { | |
6a9adeca BS |
2779 | bfd_vma offset; |
2780 | ||
c96a8570 | 2781 | addend += bfinfdpic_got_section (info)->output_section->vma; |
fd361982 | 2782 | if ((bfd_section_flags (input_section->output_section) |
c96a8570 BS |
2783 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
2784 | { | |
2785 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2786 | input_section | |
2787 | ->output_section)) | |
2788 | { | |
2789 | info->callbacks->warning | |
2790 | (info, | |
2791 | _("cannot emit fixups in read-only section"), | |
2792 | name, input_bfd, input_section, rel->r_offset); | |
2793 | return FALSE; | |
2794 | } | |
6a9adeca BS |
2795 | |
2796 | offset = _bfd_elf_section_offset | |
2797 | (output_bfd, info, | |
2798 | input_section, rel->r_offset); | |
2799 | ||
2800 | if (offset != (bfd_vma)-1) | |
2801 | _bfinfdpic_add_rofixup (output_bfd, | |
2802 | bfinfdpic_gotfixup_section | |
2803 | (info), | |
2804 | offset + input_section | |
2805 | ->output_section->vma | |
2806 | + input_section->output_offset, | |
2807 | picrel); | |
c96a8570 BS |
2808 | } |
2809 | } | |
fd361982 | 2810 | else if ((bfd_section_flags (input_section->output_section) |
c96a8570 BS |
2811 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
2812 | { | |
2813 | bfd_vma offset; | |
2814 | ||
2815 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2816 | input_section | |
2817 | ->output_section)) | |
2818 | { | |
2819 | info->callbacks->warning | |
2820 | (info, | |
2821 | _("cannot emit dynamic relocations in read-only section"), | |
2822 | name, input_bfd, input_section, rel->r_offset); | |
2823 | return FALSE; | |
2824 | } | |
2825 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2826 | input_section, rel->r_offset); | |
6a9adeca BS |
2827 | |
2828 | if (offset != (bfd_vma)-1) | |
c96a8570 BS |
2829 | _bfinfdpic_add_dyn_reloc (output_bfd, |
2830 | bfinfdpic_gotrel_section (info), | |
2831 | offset + input_section | |
2832 | ->output_section->vma | |
2833 | + input_section->output_offset, | |
2834 | r_type, | |
2835 | dynindx, addend, picrel); | |
2836 | } | |
2837 | else | |
2838 | addend += bfinfdpic_got_section (info)->output_section->vma; | |
2839 | } | |
2840 | ||
2841 | /* We want the addend in-place because dynamic | |
2842 | relocations are REL. Setting relocation to it should | |
2843 | arrange for it to be installed. */ | |
2844 | relocation = addend - rel->r_addend; | |
2845 | } | |
2846 | check_segment[0] = check_segment[1] = got_segment; | |
2847 | break; | |
2848 | ||
cb88ce9f | 2849 | case R_BFIN_BYTE4_DATA: |
c96a8570 | 2850 | if (! IS_FDPIC (output_bfd)) |
7a84e3da | 2851 | { |
c96a8570 BS |
2852 | check_segment[0] = check_segment[1] = -1; |
2853 | break; | |
7a84e3da | 2854 | } |
c96a8570 BS |
2855 | /* Fall through. */ |
2856 | case R_BFIN_FUNCDESC_VALUE: | |
2857 | { | |
2858 | int dynindx; | |
2859 | bfd_vma addend = rel->r_addend; | |
2860 | bfd_vma offset; | |
2861 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2862 | input_section, rel->r_offset); | |
7a84e3da | 2863 | |
c96a8570 BS |
2864 | /* If the symbol is dynamic but binds locally, use |
2865 | section+offset. */ | |
2866 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h)) | |
48d502e1 | 2867 | { |
c96a8570 BS |
2868 | if (addend && r_type == R_BFIN_FUNCDESC_VALUE) |
2869 | { | |
2870 | info->callbacks->warning | |
2871 | (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), | |
2872 | name, input_bfd, input_section, rel->r_offset); | |
2873 | return FALSE; | |
2874 | } | |
2875 | dynindx = h->dynindx; | |
48d502e1 | 2876 | } |
c96a8570 | 2877 | else |
48d502e1 | 2878 | { |
c96a8570 BS |
2879 | if (h) |
2880 | addend += h->root.u.def.value; | |
2881 | else | |
2882 | addend += sym->st_value; | |
2883 | if (osec) | |
2884 | addend += osec->output_offset; | |
2885 | if (osec && osec->output_section | |
2886 | && ! bfd_is_abs_section (osec->output_section) | |
2887 | && ! bfd_is_und_section (osec->output_section)) | |
2888 | dynindx = elf_section_data (osec->output_section)->dynindx; | |
2889 | else | |
2890 | dynindx = 0; | |
2891 | } | |
48d502e1 | 2892 | |
c96a8570 BS |
2893 | /* If we're linking an executable at a fixed address, we |
2894 | can omit the dynamic relocation as long as the symbol | |
2895 | is defined in the current link unit (which is implied | |
2896 | by its output section not being NULL). */ | |
3cbc1e5e | 2897 | if (bfd_link_pde (info) |
c96a8570 BS |
2898 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
2899 | { | |
2900 | if (osec) | |
2901 | addend += osec->output_section->vma; | |
2902 | if (IS_FDPIC (input_bfd) | |
fd361982 | 2903 | && (bfd_section_flags (input_section->output_section) |
c96a8570 | 2904 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
48d502e1 | 2905 | { |
c96a8570 BS |
2906 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
2907 | input_section | |
2908 | ->output_section)) | |
48d502e1 | 2909 | { |
c96a8570 BS |
2910 | info->callbacks->warning |
2911 | (info, | |
2912 | _("cannot emit fixups in read-only section"), | |
2913 | name, input_bfd, input_section, rel->r_offset); | |
2914 | return FALSE; | |
2915 | } | |
2916 | if (!h || h->root.type != bfd_link_hash_undefweak) | |
2917 | { | |
6a9adeca | 2918 | if (offset != (bfd_vma)-1) |
c96a8570 | 2919 | { |
6a9adeca BS |
2920 | _bfinfdpic_add_rofixup (output_bfd, |
2921 | bfinfdpic_gotfixup_section | |
2922 | (info), | |
2923 | offset + input_section | |
2924 | ->output_section->vma | |
2925 | + input_section->output_offset, | |
2926 | picrel); | |
2927 | ||
2928 | if (r_type == R_BFIN_FUNCDESC_VALUE) | |
c96a8570 BS |
2929 | _bfinfdpic_add_rofixup |
2930 | (output_bfd, | |
2931 | bfinfdpic_gotfixup_section (info), | |
2932 | offset + input_section->output_section->vma | |
2933 | + input_section->output_offset + 4, picrel); | |
2934 | } | |
48d502e1 BS |
2935 | } |
2936 | } | |
48d502e1 BS |
2937 | } |
2938 | else | |
2939 | { | |
fd361982 | 2940 | if ((bfd_section_flags (input_section->output_section) |
c96a8570 | 2941 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
48d502e1 | 2942 | { |
c96a8570 BS |
2943 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
2944 | input_section | |
2945 | ->output_section)) | |
48d502e1 | 2946 | { |
c96a8570 BS |
2947 | info->callbacks->warning |
2948 | (info, | |
2949 | _("cannot emit dynamic relocations in read-only section"), | |
2950 | name, input_bfd, input_section, rel->r_offset); | |
2951 | return FALSE; | |
48d502e1 | 2952 | } |
6a9adeca BS |
2953 | |
2954 | if (offset != (bfd_vma)-1) | |
c96a8570 BS |
2955 | _bfinfdpic_add_dyn_reloc (output_bfd, |
2956 | bfinfdpic_gotrel_section (info), | |
2957 | offset | |
6a9adeca | 2958 | + input_section->output_section->vma |
c96a8570 BS |
2959 | + input_section->output_offset, |
2960 | r_type, dynindx, addend, picrel); | |
48d502e1 | 2961 | } |
c96a8570 BS |
2962 | else if (osec) |
2963 | addend += osec->output_section->vma; | |
2964 | /* We want the addend in-place because dynamic | |
2965 | relocations are REL. Setting relocation to it | |
2966 | should arrange for it to be installed. */ | |
2967 | relocation = addend - rel->r_addend; | |
2968 | } | |
2969 | ||
6a9adeca | 2970 | if (r_type == R_BFIN_FUNCDESC_VALUE) |
c96a8570 BS |
2971 | { |
2972 | /* If we've omitted the dynamic relocation, just emit | |
2973 | the fixed addresses of the symbol and of the local | |
2974 | GOT base offset. */ | |
3cbc1e5e | 2975 | if (bfd_link_pde (info) |
c96a8570 BS |
2976 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) |
2977 | bfd_put_32 (output_bfd, | |
2978 | bfinfdpic_got_section (info)->output_section->vma | |
2979 | + bfinfdpic_got_section (info)->output_offset | |
2980 | + bfinfdpic_got_initial_offset (info), | |
2981 | contents + rel->r_offset + 4); | |
2982 | else | |
2983 | /* A function descriptor used for lazy or local | |
2984 | resolving is initialized such that its high word | |
2985 | contains the output section index in which the | |
2986 | PLT entries are located, and the low word | |
2987 | contains the offset of the lazy PLT entry entry | |
2988 | point into that section. */ | |
2989 | bfd_put_32 (output_bfd, | |
2990 | h && ! BFINFDPIC_SYM_LOCAL (info, h) | |
2991 | ? 0 | |
2992 | : _bfinfdpic_osec_to_segment (output_bfd, | |
2993 | sec | |
2994 | ->output_section), | |
2995 | contents + rel->r_offset + 4); | |
48d502e1 | 2996 | } |
c96a8570 BS |
2997 | } |
2998 | check_segment[0] = check_segment[1] = got_segment; | |
2999 | break; | |
3000 | ||
3001 | default: | |
3002 | check_segment[0] = isec_segment; | |
3003 | check_segment[1] = sec | |
3004 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
3005 | : (unsigned)-1; | |
3006 | break; | |
3007 | } | |
3008 | ||
3009 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) | |
3010 | { | |
3011 | #if 1 /* If you take this out, remove the #error from fdpic-static-6.d | |
3012 | in the ld testsuite. */ | |
3013 | /* This helps catch problems in GCC while we can't do more | |
3014 | than static linking. The idea is to test whether the | |
3015 | input file basename is crt0.o only once. */ | |
3016 | if (silence_segment_error == 1) | |
3017 | silence_segment_error = | |
3018 | (strlen (input_bfd->filename) == 6 | |
007d6189 | 3019 | && filename_cmp (input_bfd->filename, "crt0.o") == 0) |
c96a8570 | 3020 | || (strlen (input_bfd->filename) > 6 |
007d6189 KT |
3021 | && filename_cmp (input_bfd->filename |
3022 | + strlen (input_bfd->filename) - 7, | |
c96a8570 BS |
3023 | "/crt0.o") == 0) |
3024 | ? -1 : 0; | |
3025 | #endif | |
3026 | if (!silence_segment_error | |
3027 | /* We don't want duplicate errors for undefined | |
3028 | symbols. */ | |
3029 | && !(picrel && picrel->symndx == -1 | |
3030 | && picrel->d.h->root.type == bfd_link_hash_undefined)) | |
3031 | info->callbacks->warning | |
3032 | (info, | |
0e1862bb | 3033 | bfd_link_pic (info) |
c96a8570 BS |
3034 | ? _("relocations between different segments are not supported") |
3035 | : _("warning: relocation references a different segment"), | |
3036 | name, input_bfd, input_section, rel->r_offset); | |
0e1862bb | 3037 | if (!silence_segment_error && bfd_link_pic (info)) |
c96a8570 BS |
3038 | return FALSE; |
3039 | elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC; | |
3040 | } | |
3041 | ||
3042 | switch (r_type) | |
3043 | { | |
3044 | case R_BFIN_GOTOFFHI: | |
3045 | /* We need the addend to be applied before we shift the | |
3046 | value right. */ | |
3047 | relocation += rel->r_addend; | |
3048 | /* Fall through. */ | |
3049 | case R_BFIN_GOTHI: | |
3050 | case R_BFIN_FUNCDESC_GOTHI: | |
3051 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3052 | relocation >>= 16; | |
3053 | /* Fall through. */ | |
48d502e1 | 3054 | |
c96a8570 BS |
3055 | case R_BFIN_GOTLO: |
3056 | case R_BFIN_FUNCDESC_GOTLO: | |
3057 | case R_BFIN_GOTOFFLO: | |
3058 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3059 | relocation &= 0xffff; | |
3060 | break; | |
48d502e1 | 3061 | |
48d502e1 | 3062 | default: |
48d502e1 BS |
3063 | break; |
3064 | } | |
3065 | ||
c96a8570 | 3066 | switch (r_type) |
48d502e1 | 3067 | { |
cb88ce9f BS |
3068 | case R_BFIN_PCREL24: |
3069 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
3070 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
3071 | break; | |
3072 | /* Fall through. */ | |
3073 | ||
3074 | /* When referencing a GOT entry, a function descriptor or a | |
3075 | PLT, we don't want the addend to apply to the reference, | |
3076 | but rather to the referenced symbol. The actual entry | |
3077 | will have already been created taking the addend into | |
3078 | account, so cancel it out here. */ | |
3079 | case R_BFIN_GOT17M4: | |
3080 | case R_BFIN_GOTHI: | |
3081 | case R_BFIN_GOTLO: | |
3082 | case R_BFIN_FUNCDESC_GOT17M4: | |
3083 | case R_BFIN_FUNCDESC_GOTHI: | |
3084 | case R_BFIN_FUNCDESC_GOTLO: | |
3085 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
3086 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3087 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3088 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4 | |
3089 | here, since we do want to apply the addend to the others. | |
3090 | Note that we've applied the addend to GOTOFFHI before we | |
3091 | shifted it right. */ | |
3092 | case R_BFIN_GOTOFFHI: | |
3093 | relocation -= rel->r_addend; | |
3094 | break; | |
3095 | ||
3096 | default: | |
3097 | break; | |
48d502e1 BS |
3098 | } |
3099 | ||
c96a8570 BS |
3100 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, |
3101 | contents, rel->r_offset, | |
3102 | relocation, rel->r_addend); | |
3103 | ||
48d502e1 BS |
3104 | if (r != bfd_reloc_ok) |
3105 | { | |
c96a8570 | 3106 | const char * msg = (const char *) NULL; |
48d502e1 | 3107 | |
c96a8570 | 3108 | switch (r) |
48d502e1 | 3109 | { |
c96a8570 | 3110 | case bfd_reloc_overflow: |
1a72702b | 3111 | (*info->callbacks->reloc_overflow) |
c96a8570 BS |
3112 | (info, (h ? &h->root : NULL), name, howto->name, |
3113 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
3114 | break; | |
0f64bb02 | 3115 | |
c96a8570 | 3116 | case bfd_reloc_undefined: |
1a72702b | 3117 | (*info->callbacks->undefined_symbol) |
c96a8570 BS |
3118 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); |
3119 | break; | |
3120 | ||
3121 | case bfd_reloc_outofrange: | |
3122 | msg = _("internal error: out of range error"); | |
3123 | break; | |
3124 | ||
3125 | case bfd_reloc_notsupported: | |
3126 | msg = _("internal error: unsupported relocation error"); | |
3127 | break; | |
3128 | ||
3129 | case bfd_reloc_dangerous: | |
3130 | msg = _("internal error: dangerous relocation"); | |
3131 | break; | |
3132 | ||
3133 | default: | |
3134 | msg = _("internal error: unknown error"); | |
3135 | break; | |
48d502e1 | 3136 | } |
c96a8570 BS |
3137 | |
3138 | if (msg) | |
1a72702b AM |
3139 | (*info->callbacks->warning) (info, msg, name, input_bfd, |
3140 | input_section, rel->r_offset); | |
48d502e1 BS |
3141 | } |
3142 | } | |
3143 | ||
3144 | return TRUE; | |
3145 | } | |
3146 | ||
48d502e1 BS |
3147 | /* We need dynamic symbols for every section, since segments can |
3148 | relocate independently. */ | |
3149 | static bfd_boolean | |
3150 | _bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, | |
51408ec2 AM |
3151 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3152 | asection *p) | |
48d502e1 BS |
3153 | { |
3154 | switch (elf_section_data (p)->this_hdr.sh_type) | |
3155 | { | |
3156 | case SHT_PROGBITS: | |
3157 | case SHT_NOBITS: | |
3158 | /* If sh_type is yet undecided, assume it could be | |
3159 | SHT_PROGBITS/SHT_NOBITS. */ | |
3160 | case SHT_NULL: | |
3161 | return FALSE; | |
3162 | ||
3163 | /* There shouldn't be section relative relocations | |
3164 | against any other section. */ | |
3165 | default: | |
3166 | return TRUE; | |
3167 | } | |
3168 | } | |
3169 | ||
3170 | /* Create a .got section, as well as its additional info field. This | |
3171 | is almost entirely copied from | |
3172 | elflink.c:_bfd_elf_create_got_section(). */ | |
3173 | ||
3174 | static bfd_boolean | |
3175 | _bfin_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
3176 | { | |
3177 | flagword flags, pltflags; | |
3178 | asection *s; | |
3179 | struct elf_link_hash_entry *h; | |
48d502e1 BS |
3180 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
3181 | int ptralign; | |
48d502e1 BS |
3182 | |
3183 | /* This function may be called more than once. */ | |
ce558b89 | 3184 | s = elf_hash_table (info)->sgot; |
3d4d4302 | 3185 | if (s != NULL) |
48d502e1 BS |
3186 | return TRUE; |
3187 | ||
3188 | /* Machine specific: although pointers are 32-bits wide, we want the | |
3189 | GOT to be aligned to a 64-bit boundary, such that function | |
3190 | descriptors in it can be accessed with 64-bit loads and | |
3191 | stores. */ | |
3192 | ptralign = 3; | |
3193 | ||
3194 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3195 | | SEC_LINKER_CREATED); | |
3196 | pltflags = flags; | |
3197 | ||
3d4d4302 | 3198 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
ce558b89 | 3199 | elf_hash_table (info)->sgot = s; |
48d502e1 | 3200 | if (s == NULL |
fd361982 | 3201 | || !bfd_set_section_alignment (s, ptralign)) |
48d502e1 BS |
3202 | return FALSE; |
3203 | ||
48d502e1 BS |
3204 | if (bed->want_got_sym) |
3205 | { | |
3206 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
3207 | (or .got.plt) section. We don't do this in the linker script | |
3208 | because we don't want to define the symbol if we are not creating | |
3209 | a global offset table. */ | |
5592d7ec | 3210 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_"); |
48d502e1 BS |
3211 | elf_hash_table (info)->hgot = h; |
3212 | if (h == NULL) | |
3213 | return FALSE; | |
3214 | ||
3215 | /* Machine-specific: we want the symbol for executables as | |
3216 | well. */ | |
3217 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3218 | return FALSE; | |
3219 | } | |
3220 | ||
3221 | /* The first bit of the global offset table is the header. */ | |
3222 | s->size += bed->got_header_size; | |
3223 | ||
3224 | /* This is the machine-specific part. Create and initialize section | |
3225 | data for the got. */ | |
3226 | if (IS_FDPIC (abfd)) | |
3227 | { | |
48d502e1 BS |
3228 | bfinfdpic_relocs_info (info) = htab_try_create (1, |
3229 | bfinfdpic_relocs_info_hash, | |
3230 | bfinfdpic_relocs_info_eq, | |
3231 | (htab_del) NULL); | |
3232 | if (! bfinfdpic_relocs_info (info)) | |
3233 | return FALSE; | |
3234 | ||
3d4d4302 AM |
3235 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", |
3236 | (flags | SEC_READONLY)); | |
48d502e1 | 3237 | if (s == NULL |
fd361982 | 3238 | || !bfd_set_section_alignment (s, 2)) |
48d502e1 BS |
3239 | return FALSE; |
3240 | ||
3241 | bfinfdpic_gotrel_section (info) = s; | |
3242 | ||
3243 | /* Machine-specific. */ | |
3d4d4302 AM |
3244 | s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", |
3245 | (flags | SEC_READONLY)); | |
48d502e1 | 3246 | if (s == NULL |
fd361982 | 3247 | || !bfd_set_section_alignment (s, 2)) |
48d502e1 BS |
3248 | return FALSE; |
3249 | ||
3250 | bfinfdpic_gotfixup_section (info) = s; | |
48d502e1 BS |
3251 | } |
3252 | ||
48d502e1 BS |
3253 | pltflags |= SEC_CODE; |
3254 | if (bed->plt_not_loaded) | |
3255 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); | |
3256 | if (bed->plt_readonly) | |
3257 | pltflags |= SEC_READONLY; | |
3258 | ||
3d4d4302 | 3259 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
48d502e1 | 3260 | if (s == NULL |
fd361982 | 3261 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
48d502e1 BS |
3262 | return FALSE; |
3263 | /* Blackfin-specific: remember it. */ | |
3264 | bfinfdpic_plt_section (info) = s; | |
3265 | ||
3266 | if (bed->want_plt_sym) | |
3267 | { | |
3268 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3269 | .plt section. */ | |
48d502e1 BS |
3270 | struct bfd_link_hash_entry *bh = NULL; |
3271 | ||
3272 | if (! (_bfd_generic_link_add_one_symbol | |
5592d7ec | 3273 | (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL, |
48d502e1 BS |
3274 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
3275 | return FALSE; | |
3276 | h = (struct elf_link_hash_entry *) bh; | |
3277 | h->def_regular = 1; | |
3278 | h->type = STT_OBJECT; | |
3279 | ||
0e1862bb | 3280 | if (! bfd_link_executable (info) |
48d502e1 BS |
3281 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
3282 | return FALSE; | |
3283 | } | |
3284 | ||
3285 | /* Blackfin-specific: we want rel relocations for the plt. */ | |
3d4d4302 AM |
3286 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", |
3287 | flags | SEC_READONLY); | |
48d502e1 | 3288 | if (s == NULL |
fd361982 | 3289 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
48d502e1 BS |
3290 | return FALSE; |
3291 | /* Blackfin-specific: remember it. */ | |
3292 | bfinfdpic_pltrel_section (info) = s; | |
3293 | ||
6a9adeca BS |
3294 | return TRUE; |
3295 | } | |
3296 | ||
3297 | /* Make sure the got and plt sections exist, and that our pointers in | |
3298 | the link hash table point to them. */ | |
3299 | ||
3300 | static bfd_boolean | |
3301 | elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3302 | { | |
3303 | /* This is mostly copied from | |
3304 | elflink.c:_bfd_elf_create_dynamic_sections(). */ | |
3305 | flagword flags; | |
3306 | asection *s; | |
3307 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3308 | ||
3309 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3310 | | SEC_LINKER_CREATED); | |
3311 | ||
3312 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3313 | .rel[a].bss sections. */ | |
3314 | ||
48d502e1 BS |
3315 | /* Blackfin-specific: we want to create the GOT in the Blackfin way. */ |
3316 | if (! _bfin_create_got_section (abfd, info)) | |
3317 | return FALSE; | |
3318 | ||
3319 | /* Blackfin-specific: make sure we created everything we wanted. */ | |
3320 | BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info) | |
3321 | /* && bfinfdpic_gotfixup_section (info) */ | |
3322 | && bfinfdpic_plt_section (info) | |
3323 | && bfinfdpic_pltrel_section (info)); | |
3324 | ||
3325 | if (bed->want_dynbss) | |
3326 | { | |
3327 | /* The .dynbss section is a place to put symbols which are defined | |
3328 | by dynamic objects, are referenced by regular objects, and are | |
3329 | not functions. We must allocate space for them in the process | |
3330 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3331 | initialize them at run time. The linker script puts the .dynbss | |
3332 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
3333 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
3334 | SEC_ALLOC | SEC_LINKER_CREATED); | |
117ed4f8 | 3335 | if (s == NULL) |
48d502e1 BS |
3336 | return FALSE; |
3337 | ||
3338 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3d4d4302 AM |
3339 | normally needed. We need to create it here, though, so that the |
3340 | linker will map it to an output section. We can't just create it | |
3341 | only if we need it, because we will not know whether we need it | |
3342 | until we have seen all the input files, and the first time the | |
3343 | main linker code calls BFD after examining all the input files | |
3344 | (size_dynamic_sections) the input sections have already been | |
3345 | mapped to the output sections. If the section turns out not to | |
3346 | be needed, we can discard it later. We will never need this | |
3347 | section when generating a shared object, since they do not use | |
3348 | copy relocs. */ | |
0e1862bb | 3349 | if (! bfd_link_pic (info)) |
48d502e1 | 3350 | { |
3d4d4302 AM |
3351 | s = bfd_make_section_anyway_with_flags (abfd, |
3352 | ".rela.bss", | |
3353 | flags | SEC_READONLY); | |
48d502e1 | 3354 | if (s == NULL |
fd361982 | 3355 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
48d502e1 BS |
3356 | return FALSE; |
3357 | } | |
3358 | } | |
3359 | ||
3360 | return TRUE; | |
3361 | } | |
3362 | ||
48d502e1 BS |
3363 | /* Compute the total GOT size required by each symbol in each range. |
3364 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3365 | the symbol, an entry pointing to its function descriptor, and a | |
3366 | private function descriptors taking two words. */ | |
3367 | ||
6a9adeca BS |
3368 | static void |
3369 | _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info *entry, | |
3370 | struct _bfinfdpic_dynamic_got_info *dinfo) | |
48d502e1 | 3371 | { |
48d502e1 BS |
3372 | /* Allocate space for a GOT entry pointing to the symbol. */ |
3373 | if (entry->got17m4) | |
3374 | dinfo->got17m4 += 4; | |
3375 | else if (entry->gothilo) | |
3376 | dinfo->gothilo += 4; | |
3377 | else | |
3378 | entry->relocs32--; | |
3379 | entry->relocs32++; | |
3380 | ||
3381 | /* Allocate space for a GOT entry pointing to the function | |
3382 | descriptor. */ | |
3383 | if (entry->fdgot17m4) | |
3384 | dinfo->got17m4 += 4; | |
3385 | else if (entry->fdgothilo) | |
3386 | dinfo->gothilo += 4; | |
3387 | else | |
3388 | entry->relocsfd--; | |
3389 | entry->relocsfd++; | |
3390 | ||
3391 | /* Decide whether we need a PLT entry, a function descriptor in the | |
3392 | GOT, and a lazy PLT entry for this symbol. */ | |
3393 | entry->plt = entry->call | |
3394 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3395 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3396 | entry->privfd = entry->plt | |
3397 | || entry->fdgoff17m4 || entry->fdgoffhilo | |
3398 | || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo) | |
3399 | && (entry->symndx != -1 | |
3400 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); | |
3401 | entry->lazyplt = entry->privfd | |
3402 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3403 | && ! (dinfo->info->flags & DF_BIND_NOW) | |
3404 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3405 | ||
3406 | /* Allocate space for a function descriptor. */ | |
3407 | if (entry->fdgoff17m4) | |
3408 | dinfo->fd17m4 += 8; | |
3409 | else if (entry->privfd && entry->plt) | |
3410 | dinfo->fdplt += 8; | |
3411 | else if (entry->privfd) | |
3412 | dinfo->fdhilo += 8; | |
3413 | else | |
3414 | entry->relocsfdv--; | |
3415 | entry->relocsfdv++; | |
3416 | ||
3417 | if (entry->lazyplt) | |
3418 | dinfo->lzplt += LZPLT_NORMAL_SIZE; | |
6a9adeca BS |
3419 | } |
3420 | ||
3421 | /* Compute the number of dynamic relocations and fixups that a symbol | |
3422 | requires, and add (or subtract) from the grand and per-symbol | |
3423 | totals. */ | |
3424 | ||
3425 | static void | |
3426 | _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info *entry, | |
3427 | struct _bfinfdpic_dynamic_got_info *dinfo, | |
3428 | bfd_boolean subtract) | |
3429 | { | |
3430 | bfd_vma relocs = 0, fixups = 0; | |
48d502e1 | 3431 | |
3cbc1e5e | 3432 | if (!bfd_link_pde (dinfo->info)) |
48d502e1 BS |
3433 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv; |
3434 | else | |
3435 | { | |
3436 | if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) | |
3437 | { | |
3438 | if (entry->symndx != -1 | |
3439 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3440 | fixups += entry->relocs32 + 2 * entry->relocsfdv; | |
3441 | } | |
3442 | else | |
3443 | relocs += entry->relocs32 + entry->relocsfdv; | |
3444 | ||
3445 | if (entry->symndx != -1 | |
3446 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) | |
3447 | { | |
3448 | if (entry->symndx != -1 | |
3449 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3450 | fixups += entry->relocsfd; | |
3451 | } | |
3452 | else | |
3453 | relocs += entry->relocsfd; | |
3454 | } | |
3455 | ||
6a9adeca BS |
3456 | if (subtract) |
3457 | { | |
3458 | relocs = - relocs; | |
3459 | fixups = - fixups; | |
3460 | } | |
3461 | ||
48d502e1 BS |
3462 | entry->dynrelocs += relocs; |
3463 | entry->fixups += fixups; | |
3464 | dinfo->relocs += relocs; | |
3465 | dinfo->fixups += fixups; | |
6a9adeca BS |
3466 | } |
3467 | ||
3468 | /* Compute the total GOT and PLT size required by each symbol in each range. * | |
3469 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3470 | the symbol, an entry pointing to its function descriptor, and a | |
3471 | private function descriptors taking two words. */ | |
3472 | ||
3473 | static int | |
3474 | _bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_) | |
3475 | { | |
3476 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3477 | struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_; | |
3478 | ||
3479 | _bfinfdpic_count_nontls_entries (entry, dinfo); | |
3480 | ||
3481 | _bfinfdpic_count_relocs_fixups (entry, dinfo, FALSE); | |
48d502e1 BS |
3482 | |
3483 | return 1; | |
3484 | } | |
3485 | ||
3486 | /* This structure is used to assign offsets to got entries, function | |
3487 | descriptors, plt entries and lazy plt entries. */ | |
3488 | ||
3489 | struct _bfinfdpic_dynamic_got_plt_info | |
3490 | { | |
3491 | /* Summary information collected with _bfinfdpic_count_got_plt_entries. */ | |
3492 | struct _bfinfdpic_dynamic_got_info g; | |
3493 | ||
3494 | /* For each addressable range, we record a MAX (positive) and MIN | |
3495 | (negative) value. CUR is used to assign got entries, and it's | |
3496 | incremented from an initial positive value to MAX, then from MIN | |
3497 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to | |
3498 | assign function descriptors, and it's decreased from an initial | |
3499 | non-positive value to MIN, then from MAX down to CUR (unless CUR | |
3500 | wraps around first). All of MIN, MAX, CUR and FDCUR always point | |
3501 | to even words. ODD, if non-zero, indicates an odd word to be | |
3502 | used for the next got entry, otherwise CUR is used and | |
3503 | incremented by a pair of words, wrapping around when it reaches | |
3504 | MAX. FDCUR is decremented (and wrapped) before the next function | |
3505 | descriptor is chosen. FDPLT indicates the number of remaining | |
3506 | slots that can be used for function descriptors used only by PLT | |
3507 | entries. */ | |
3508 | struct _bfinfdpic_dynamic_got_alloc_data | |
3509 | { | |
3510 | bfd_signed_vma max, cur, odd, fdcur, min; | |
3511 | bfd_vma fdplt; | |
3512 | } got17m4, gothilo; | |
3513 | }; | |
3514 | ||
3515 | /* Determine the positive and negative ranges to be used by each | |
3516 | offset range in the GOT. FDCUR and CUR, that must be aligned to a | |
3517 | double-word boundary, are the minimum (negative) and maximum | |
3518 | (positive) GOT offsets already used by previous ranges, except for | |
3519 | an ODD entry that may have been left behind. GOT and FD indicate | |
3520 | the size of GOT entries and function descriptors that must be | |
3521 | placed within the range from -WRAP to WRAP. If there's room left, | |
3522 | up to FDPLT bytes should be reserved for additional function | |
3523 | descriptors. */ | |
3524 | ||
3525 | inline static bfd_signed_vma | |
3526 | _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad, | |
3527 | bfd_signed_vma fdcur, | |
3528 | bfd_signed_vma odd, | |
3529 | bfd_signed_vma cur, | |
3530 | bfd_vma got, | |
3531 | bfd_vma fd, | |
3532 | bfd_vma fdplt, | |
3533 | bfd_vma wrap) | |
3534 | { | |
3535 | bfd_signed_vma wrapmin = -wrap; | |
3536 | ||
3537 | /* Start at the given initial points. */ | |
3538 | gad->fdcur = fdcur; | |
3539 | gad->cur = cur; | |
3540 | ||
3541 | /* If we had an incoming odd word and we have any got entries that | |
3542 | are going to use it, consume it, otherwise leave gad->odd at | |
3543 | zero. We might force gad->odd to zero and return the incoming | |
3544 | odd such that it is used by the next range, but then GOT entries | |
3545 | might appear to be out of order and we wouldn't be able to | |
3546 | shorten the GOT by one word if it turns out to end with an | |
3547 | unpaired GOT entry. */ | |
3548 | if (odd && got) | |
3549 | { | |
3550 | gad->odd = odd; | |
3551 | got -= 4; | |
3552 | odd = 0; | |
3553 | } | |
3554 | else | |
3555 | gad->odd = 0; | |
3556 | ||
3557 | /* If we're left with an unpaired GOT entry, compute its location | |
3558 | such that we can return it. Otherwise, if got doesn't require an | |
3559 | odd number of words here, either odd was already zero in the | |
3560 | block above, or it was set to zero because got was non-zero, or | |
3561 | got was already zero. In the latter case, we want the value of | |
3562 | odd to carry over to the return statement, so we don't want to | |
3563 | reset odd unless the condition below is true. */ | |
3564 | if (got & 4) | |
3565 | { | |
3566 | odd = cur + got; | |
3567 | got += 4; | |
3568 | } | |
3569 | ||
3570 | /* Compute the tentative boundaries of this range. */ | |
3571 | gad->max = cur + got; | |
3572 | gad->min = fdcur - fd; | |
3573 | gad->fdplt = 0; | |
3574 | ||
3575 | /* If function descriptors took too much space, wrap some of them | |
3576 | around. */ | |
3577 | if (gad->min < wrapmin) | |
3578 | { | |
3579 | gad->max += wrapmin - gad->min; | |
3580 | gad->min = wrapmin; | |
3581 | } | |
3582 | /* If there is space left and we have function descriptors | |
3583 | referenced in PLT entries that could take advantage of shorter | |
3584 | offsets, place them here. */ | |
3585 | else if (fdplt && gad->min > wrapmin) | |
3586 | { | |
3587 | bfd_vma fds; | |
3588 | if ((bfd_vma) (gad->min - wrapmin) < fdplt) | |
3589 | fds = gad->min - wrapmin; | |
3590 | else | |
3591 | fds = fdplt; | |
3592 | ||
3593 | fdplt -= fds; | |
3594 | gad->min -= fds; | |
3595 | gad->fdplt += fds; | |
3596 | } | |
3597 | ||
3598 | /* If GOT entries took too much space, wrap some of them around. | |
3599 | This may well cause gad->min to become lower than wrapmin. This | |
3600 | will cause a relocation overflow later on, so we don't have to | |
3601 | report it here . */ | |
3602 | if ((bfd_vma) gad->max > wrap) | |
3603 | { | |
3604 | gad->min -= gad->max - wrap; | |
3605 | gad->max = wrap; | |
3606 | } | |
3607 | /* If there is more space left, try to place some more function | |
3608 | descriptors for PLT entries. */ | |
3609 | else if (fdplt && (bfd_vma) gad->max < wrap) | |
3610 | { | |
3611 | bfd_vma fds; | |
3612 | if ((bfd_vma) (wrap - gad->max) < fdplt) | |
3613 | fds = wrap - gad->max; | |
3614 | else | |
3615 | fds = fdplt; | |
3616 | ||
3617 | fdplt -= fds; | |
3618 | gad->max += fds; | |
3619 | gad->fdplt += fds; | |
3620 | } | |
3621 | ||
3622 | /* If odd was initially computed as an offset past the wrap point, | |
3623 | wrap it around. */ | |
3624 | if (odd > gad->max) | |
3625 | odd = gad->min + odd - gad->max; | |
3626 | ||
3627 | /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed | |
3628 | before returning, so do it here too. This guarantees that, | |
3629 | should cur and fdcur meet at the wrap point, they'll both be | |
3630 | equal to min. */ | |
3631 | if (gad->cur == gad->max) | |
3632 | gad->cur = gad->min; | |
3633 | ||
3634 | return odd; | |
3635 | } | |
3636 | ||
3637 | /* Compute the location of the next GOT entry, given the allocation | |
3638 | data for a range. */ | |
3639 | ||
3640 | inline static bfd_signed_vma | |
3641 | _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3642 | { | |
3643 | bfd_signed_vma ret; | |
3644 | ||
3645 | if (gad->odd) | |
3646 | { | |
3647 | /* If there was an odd word left behind, use it. */ | |
3648 | ret = gad->odd; | |
3649 | gad->odd = 0; | |
3650 | } | |
3651 | else | |
3652 | { | |
3653 | /* Otherwise, use the word pointed to by cur, reserve the next | |
3654 | as an odd word, and skip to the next pair of words, possibly | |
3655 | wrapping around. */ | |
3656 | ret = gad->cur; | |
3657 | gad->odd = gad->cur + 4; | |
3658 | gad->cur += 8; | |
3659 | if (gad->cur == gad->max) | |
3660 | gad->cur = gad->min; | |
3661 | } | |
3662 | ||
3663 | return ret; | |
3664 | } | |
3665 | ||
3666 | /* Compute the location of the next function descriptor entry in the | |
3667 | GOT, given the allocation data for a range. */ | |
3668 | ||
3669 | inline static bfd_signed_vma | |
3670 | _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3671 | { | |
3672 | /* If we're at the bottom, wrap around, and only then allocate the | |
3673 | next pair of words. */ | |
3674 | if (gad->fdcur == gad->min) | |
3675 | gad->fdcur = gad->max; | |
3676 | return gad->fdcur -= 8; | |
3677 | } | |
3678 | ||
3679 | /* Assign GOT offsets for every GOT entry and function descriptor. | |
3680 | Doing everything in a single pass is tricky. */ | |
3681 | ||
3682 | static int | |
3683 | _bfinfdpic_assign_got_entries (void **entryp, void *info_) | |
3684 | { | |
3685 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3686 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3687 | ||
3688 | if (entry->got17m4) | |
3689 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3690 | else if (entry->gothilo) | |
3691 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3692 | ||
3693 | if (entry->fdgot17m4) | |
3694 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3695 | else if (entry->fdgothilo) | |
3696 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3697 | ||
3698 | if (entry->fdgoff17m4) | |
3699 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3700 | else if (entry->plt && dinfo->got17m4.fdplt) | |
3701 | { | |
3702 | dinfo->got17m4.fdplt -= 8; | |
3703 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3704 | } | |
3705 | else if (entry->plt) | |
3706 | { | |
3707 | dinfo->gothilo.fdplt -= 8; | |
3708 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3709 | } | |
3710 | else if (entry->privfd) | |
3711 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3712 | ||
3713 | return 1; | |
3714 | } | |
3715 | ||
3716 | /* Assign GOT offsets to private function descriptors used by PLT | |
3717 | entries (or referenced by 32-bit offsets), as well as PLT entries | |
3718 | and lazy PLT entries. */ | |
3719 | ||
3720 | static int | |
3721 | _bfinfdpic_assign_plt_entries (void **entryp, void *info_) | |
3722 | { | |
3723 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3724 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3725 | ||
3726 | /* If this symbol requires a local function descriptor, allocate | |
3727 | one. */ | |
3728 | if (entry->privfd && entry->fd_entry == 0) | |
3729 | { | |
3730 | if (dinfo->got17m4.fdplt) | |
3731 | { | |
3732 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3733 | dinfo->got17m4.fdplt -= 8; | |
3734 | } | |
3735 | else | |
3736 | { | |
3737 | BFD_ASSERT (dinfo->gothilo.fdplt); | |
3738 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3739 | dinfo->gothilo.fdplt -= 8; | |
3740 | } | |
3741 | } | |
3742 | ||
3743 | if (entry->plt) | |
3744 | { | |
3745 | int size; | |
3746 | ||
3747 | /* We use the section's raw size to mark the location of the | |
3748 | next PLT entry. */ | |
3749 | entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size; | |
3750 | ||
3751 | /* Figure out the length of this PLT entry based on the | |
3752 | addressing mode we need to reach the function descriptor. */ | |
3753 | BFD_ASSERT (entry->fd_entry); | |
3754 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
3755 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
3756 | size = 10; | |
3757 | else | |
3758 | size = 16; | |
3759 | ||
3760 | bfinfdpic_plt_section (dinfo->g.info)->size += size; | |
3761 | } | |
3762 | ||
3763 | if (entry->lazyplt) | |
3764 | { | |
3765 | entry->lzplt_entry = dinfo->g.lzplt; | |
3766 | dinfo->g.lzplt += LZPLT_NORMAL_SIZE; | |
3767 | /* If this entry is the one that gets the resolver stub, account | |
3768 | for the additional instruction. */ | |
3769 | if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE | |
3770 | == BFINFDPIC_LZPLT_RESOLV_LOC) | |
3771 | dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA; | |
3772 | } | |
3773 | ||
3774 | return 1; | |
3775 | } | |
3776 | ||
6a9adeca BS |
3777 | /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and |
3778 | _bfinfdpic_assign_plt_entries. */ | |
3779 | ||
3780 | static int | |
3781 | _bfinfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) | |
3782 | { | |
3783 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3784 | ||
3785 | entry->got_entry = 0; | |
3786 | entry->fdgot_entry = 0; | |
3787 | entry->fd_entry = 0; | |
3788 | entry->plt_entry = (bfd_vma)-1; | |
3789 | entry->lzplt_entry = (bfd_vma)-1; | |
3790 | ||
3791 | return 1; | |
3792 | } | |
3793 | ||
48d502e1 BS |
3794 | /* Follow indirect and warning hash entries so that each got entry |
3795 | points to the final symbol definition. P must point to a pointer | |
3796 | to the hash table we're traversing. Since this traversal may | |
3797 | modify the hash table, we set this pointer to NULL to indicate | |
3798 | we've made a potentially-destructive change to the hash table, so | |
3799 | the traversal must be restarted. */ | |
3800 | static int | |
3801 | _bfinfdpic_resolve_final_relocs_info (void **entryp, void *p) | |
3802 | { | |
3803 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3804 | htab_t *htab = p; | |
3805 | ||
3806 | if (entry->symndx == -1) | |
3807 | { | |
3808 | struct elf_link_hash_entry *h = entry->d.h; | |
3809 | struct bfinfdpic_relocs_info *oentry; | |
3810 | ||
3811 | while (h->root.type == bfd_link_hash_indirect | |
3812 | || h->root.type == bfd_link_hash_warning) | |
3813 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
3814 | ||
3815 | if (entry->d.h == h) | |
3816 | return 1; | |
3817 | ||
3818 | oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, | |
3819 | NO_INSERT); | |
3820 | ||
3821 | if (oentry) | |
3822 | { | |
3823 | /* Merge the two entries. */ | |
3824 | bfinfdpic_pic_merge_early_relocs_info (oentry, entry); | |
3825 | htab_clear_slot (*htab, entryp); | |
3826 | return 1; | |
3827 | } | |
3828 | ||
3829 | entry->d.h = h; | |
3830 | ||
3831 | /* If we can't find this entry with the new bfd hash, re-insert | |
3832 | it, and get the traversal restarted. */ | |
3833 | if (! htab_find (*htab, entry)) | |
3834 | { | |
3835 | htab_clear_slot (*htab, entryp); | |
3836 | entryp = htab_find_slot (*htab, entry, INSERT); | |
3837 | if (! *entryp) | |
3838 | *entryp = entry; | |
3839 | /* Abort the traversal, since the whole table may have | |
3840 | moved, and leave it up to the parent to restart the | |
3841 | process. */ | |
3842 | *(htab_t *)p = NULL; | |
3843 | return 0; | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | return 1; | |
3848 | } | |
3849 | ||
6a9adeca BS |
3850 | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
3851 | section and the rofixup section. Assign locations for GOT and PLT | |
3852 | entries. */ | |
48d502e1 BS |
3853 | |
3854 | static bfd_boolean | |
6a9adeca BS |
3855 | _bfinfdpic_size_got_plt (bfd *output_bfd, |
3856 | struct _bfinfdpic_dynamic_got_plt_info *gpinfop) | |
48d502e1 | 3857 | { |
48d502e1 BS |
3858 | bfd_signed_vma odd; |
3859 | bfd_vma limit; | |
6a9adeca BS |
3860 | struct bfd_link_info *info = gpinfop->g.info; |
3861 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
48d502e1 | 3862 | |
6a9adeca BS |
3863 | memcpy (bfinfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
3864 | sizeof (gpinfop->g)); | |
48d502e1 BS |
3865 | |
3866 | odd = 12; | |
3867 | /* Compute the total size taken by entries in the 18-bit range, | |
3868 | to tell how many PLT function descriptors we can bring into it | |
3869 | without causing it to overflow. */ | |
6a9adeca | 3870 | limit = odd + gpinfop->g.got17m4 + gpinfop->g.fd17m4; |
48d502e1 BS |
3871 | if (limit < (bfd_vma)1 << 18) |
3872 | limit = ((bfd_vma)1 << 18) - limit; | |
3873 | else | |
3874 | limit = 0; | |
6a9adeca BS |
3875 | if (gpinfop->g.fdplt < limit) |
3876 | limit = gpinfop->g.fdplt; | |
48d502e1 BS |
3877 | |
3878 | /* Determine the ranges of GOT offsets that we can use for each | |
3879 | range of addressing modes. */ | |
6a9adeca | 3880 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->got17m4, |
48d502e1 BS |
3881 | 0, |
3882 | odd, | |
3883 | 16, | |
6a9adeca BS |
3884 | gpinfop->g.got17m4, |
3885 | gpinfop->g.fd17m4, | |
48d502e1 BS |
3886 | limit, |
3887 | (bfd_vma)1 << (18-1)); | |
6a9adeca BS |
3888 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
3889 | gpinfop->got17m4.min, | |
48d502e1 | 3890 | odd, |
6a9adeca BS |
3891 | gpinfop->got17m4.max, |
3892 | gpinfop->g.gothilo, | |
3893 | gpinfop->g.fdhilo, | |
3894 | gpinfop->g.fdplt - gpinfop->got17m4.fdplt, | |
48d502e1 BS |
3895 | (bfd_vma)1 << (32-1)); |
3896 | ||
3897 | /* Now assign (most) GOT offsets. */ | |
3898 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries, | |
6a9adeca | 3899 | gpinfop); |
48d502e1 | 3900 | |
6a9adeca BS |
3901 | bfinfdpic_got_section (info)->size = gpinfop->gothilo.max |
3902 | - gpinfop->gothilo.min | |
48d502e1 BS |
3903 | /* If an odd word is the last word of the GOT, we don't need this |
3904 | word to be part of the GOT. */ | |
6a9adeca | 3905 | - (odd + 4 == gpinfop->gothilo.max ? 4 : 0); |
48d502e1 BS |
3906 | if (bfinfdpic_got_section (info)->size == 0) |
3907 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
3908 | else if (bfinfdpic_got_section (info)->size == 12 | |
3909 | && ! elf_hash_table (info)->dynamic_sections_created) | |
3910 | { | |
3911 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
3912 | bfinfdpic_got_section (info)->size = 0; | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | bfinfdpic_got_section (info)->contents = | |
3917 | (bfd_byte *) bfd_zalloc (dynobj, | |
3918 | bfinfdpic_got_section (info)->size); | |
3919 | if (bfinfdpic_got_section (info)->contents == NULL) | |
3920 | return FALSE; | |
3921 | } | |
3922 | ||
3923 | if (elf_hash_table (info)->dynamic_sections_created) | |
3924 | /* Subtract the number of lzplt entries, since those will generate | |
3925 | relocations in the pltrel section. */ | |
3926 | bfinfdpic_gotrel_section (info)->size = | |
6a9adeca | 3927 | (gpinfop->g.relocs - gpinfop->g.lzplt / LZPLT_NORMAL_SIZE) |
48d502e1 BS |
3928 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
3929 | else | |
6a9adeca | 3930 | BFD_ASSERT (gpinfop->g.relocs == 0); |
48d502e1 BS |
3931 | if (bfinfdpic_gotrel_section (info)->size == 0) |
3932 | bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; | |
3933 | else | |
3934 | { | |
3935 | bfinfdpic_gotrel_section (info)->contents = | |
3936 | (bfd_byte *) bfd_zalloc (dynobj, | |
3937 | bfinfdpic_gotrel_section (info)->size); | |
3938 | if (bfinfdpic_gotrel_section (info)->contents == NULL) | |
3939 | return FALSE; | |
3940 | } | |
3941 | ||
6a9adeca | 3942 | bfinfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
48d502e1 BS |
3943 | if (bfinfdpic_gotfixup_section (info)->size == 0) |
3944 | bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; | |
3945 | else | |
3946 | { | |
3947 | bfinfdpic_gotfixup_section (info)->contents = | |
3948 | (bfd_byte *) bfd_zalloc (dynobj, | |
3949 | bfinfdpic_gotfixup_section (info)->size); | |
3950 | if (bfinfdpic_gotfixup_section (info)->contents == NULL) | |
3951 | return FALSE; | |
3952 | } | |
3953 | ||
3954 | if (elf_hash_table (info)->dynamic_sections_created) | |
d3e32c2e JZ |
3955 | bfinfdpic_pltrel_section (info)->size = |
3956 | gpinfop->g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel; | |
3957 | if (bfinfdpic_pltrel_section (info)->size == 0) | |
3958 | bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; | |
3959 | else | |
48d502e1 | 3960 | { |
d3e32c2e JZ |
3961 | bfinfdpic_pltrel_section (info)->contents = |
3962 | (bfd_byte *) bfd_zalloc (dynobj, | |
3963 | bfinfdpic_pltrel_section (info)->size); | |
3964 | if (bfinfdpic_pltrel_section (info)->contents == NULL) | |
3965 | return FALSE; | |
48d502e1 BS |
3966 | } |
3967 | ||
3968 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, | |
3969 | such that there's room for the additional instruction needed to | |
3970 | call the resolver. Since _bfinfdpic_assign_got_entries didn't | |
3971 | account for them, our block size is 4 bytes smaller than the real | |
3972 | block size. */ | |
3973 | if (elf_hash_table (info)->dynamic_sections_created) | |
3974 | { | |
6a9adeca BS |
3975 | bfinfdpic_plt_section (info)->size = gpinfop->g.lzplt |
3976 | + ((gpinfop->g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE) | |
48d502e1 BS |
3977 | / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA); |
3978 | } | |
3979 | ||
3980 | /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to | |
3981 | actually assign lazy PLT entries addresses. */ | |
6a9adeca | 3982 | gpinfop->g.lzplt = 0; |
48d502e1 BS |
3983 | |
3984 | /* Save information that we're going to need to generate GOT and PLT | |
3985 | entries. */ | |
6a9adeca | 3986 | bfinfdpic_got_initial_offset (info) = -gpinfop->gothilo.min; |
48d502e1 BS |
3987 | |
3988 | if (get_elf_backend_data (output_bfd)->want_got_sym) | |
3989 | elf_hash_table (info)->hgot->root.u.def.value | |
6a9adeca | 3990 | = bfinfdpic_got_initial_offset (info); |
48d502e1 BS |
3991 | |
3992 | if (elf_hash_table (info)->dynamic_sections_created) | |
3993 | bfinfdpic_plt_initial_offset (info) = | |
3994 | bfinfdpic_plt_section (info)->size; | |
3995 | ||
3996 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries, | |
6a9adeca | 3997 | gpinfop); |
48d502e1 BS |
3998 | |
3999 | /* Allocate the PLT section contents only after | |
4000 | _bfinfdpic_assign_plt_entries has a chance to add the size of the | |
4001 | non-lazy PLT entries. */ | |
d3e32c2e JZ |
4002 | if (bfinfdpic_plt_section (info)->size == 0) |
4003 | bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE; | |
4004 | else | |
48d502e1 | 4005 | { |
d3e32c2e JZ |
4006 | bfinfdpic_plt_section (info)->contents = |
4007 | (bfd_byte *) bfd_zalloc (dynobj, | |
4008 | bfinfdpic_plt_section (info)->size); | |
4009 | if (bfinfdpic_plt_section (info)->contents == NULL) | |
4010 | return FALSE; | |
48d502e1 BS |
4011 | } |
4012 | ||
6a9adeca BS |
4013 | return TRUE; |
4014 | } | |
4015 | ||
4016 | /* Set the sizes of the dynamic sections. */ | |
4017 | ||
4018 | static bfd_boolean | |
4019 | elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd, | |
4020 | struct bfd_link_info *info) | |
4021 | { | |
4022 | struct elf_link_hash_table *htab; | |
4023 | bfd *dynobj; | |
4024 | asection *s; | |
4025 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4026 | ||
4027 | htab = elf_hash_table (info); | |
4028 | dynobj = htab->dynobj; | |
4029 | BFD_ASSERT (dynobj != NULL); | |
4030 | ||
4031 | if (htab->dynamic_sections_created) | |
4032 | { | |
4033 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 4034 | if (bfd_link_executable (info) && !info->nointerp) |
6a9adeca | 4035 | { |
3d4d4302 | 4036 | s = bfd_get_linker_section (dynobj, ".interp"); |
6a9adeca BS |
4037 | BFD_ASSERT (s != NULL); |
4038 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4039 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
4040 | } | |
4041 | } | |
4042 | ||
4043 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4044 | gpinfo.g.info = info; | |
4045 | ||
4046 | for (;;) | |
4047 | { | |
4048 | htab_t relocs = bfinfdpic_relocs_info (info); | |
4049 | ||
4050 | htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs); | |
4051 | ||
4052 | if (relocs == bfinfdpic_relocs_info (info)) | |
4053 | break; | |
4054 | } | |
4055 | ||
4056 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries, | |
4057 | &gpinfo.g); | |
4058 | ||
4059 | /* Allocate space to save the summary information, we're going to | |
4060 | use it if we're doing relaxations. */ | |
4061 | bfinfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); | |
4062 | ||
4063 | if (!_bfinfdpic_size_got_plt (output_bfd, &gpinfo)) | |
4064 | return FALSE; | |
4065 | ||
48d502e1 BS |
4066 | if (elf_hash_table (info)->dynamic_sections_created) |
4067 | { | |
4068 | if (bfinfdpic_got_section (info)->size) | |
4069 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
4070 | return FALSE; | |
4071 | ||
4072 | if (bfinfdpic_pltrel_section (info)->size) | |
4073 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4074 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) | |
4075 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
4076 | return FALSE; | |
4077 | ||
4078 | if (bfinfdpic_gotrel_section (info)->size) | |
4079 | if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) | |
4080 | || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) | |
4081 | || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, | |
4082 | sizeof (Elf32_External_Rel))) | |
4083 | return FALSE; | |
4084 | } | |
4085 | ||
3d4d4302 | 4086 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
153d38f6 JZ |
4087 | if (s && s->size == 0) |
4088 | s->flags |= SEC_EXCLUDE; | |
4089 | ||
3d4d4302 | 4090 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
153d38f6 JZ |
4091 | if (s && s->size == 0) |
4092 | s->flags |= SEC_EXCLUDE; | |
4093 | ||
48d502e1 BS |
4094 | return TRUE; |
4095 | } | |
4096 | ||
4097 | static bfd_boolean | |
4098 | elf32_bfinfdpic_always_size_sections (bfd *output_bfd, | |
4099 | struct bfd_link_info *info) | |
4100 | { | |
0e1862bb | 4101 | if (!bfd_link_relocatable (info) |
04c3a755 NS |
4102 | && !bfd_elf_stack_segment_size (output_bfd, info, |
4103 | "__stacksize", DEFAULT_STACK_SIZE)) | |
4104 | return FALSE; | |
48d502e1 BS |
4105 | |
4106 | return TRUE; | |
4107 | } | |
4108 | ||
6a9adeca BS |
4109 | /* Check whether any of the relocations was optimized away, and |
4110 | subtract it from the relocation or fixup count. */ | |
4111 | static bfd_boolean | |
4112 | _bfinfdpic_check_discarded_relocs (bfd *abfd, asection *sec, | |
2c3fc389 NC |
4113 | struct bfd_link_info *info, |
4114 | bfd_boolean *changed) | |
6a9adeca BS |
4115 | { |
4116 | Elf_Internal_Shdr *symtab_hdr; | |
4117 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4118 | Elf_Internal_Rela *rel, *erel; | |
4119 | ||
4120 | if ((sec->flags & SEC_RELOC) == 0 | |
4121 | || sec->reloc_count == 0) | |
4122 | return TRUE; | |
4123 | ||
4124 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4125 | sym_hashes = elf_sym_hashes (abfd); | |
4126 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
4127 | if (!elf_bad_symtab (abfd)) | |
4128 | sym_hashes_end -= symtab_hdr->sh_info; | |
4129 | ||
4130 | rel = elf_section_data (sec)->relocs; | |
4131 | ||
4132 | /* Now examine each relocation. */ | |
4133 | for (erel = rel + sec->reloc_count; rel < erel; rel++) | |
4134 | { | |
4135 | struct elf_link_hash_entry *h; | |
4136 | unsigned long r_symndx; | |
4137 | struct bfinfdpic_relocs_info *picrel; | |
4138 | struct _bfinfdpic_dynamic_got_info *dinfo; | |
4139 | ||
4140 | if (ELF32_R_TYPE (rel->r_info) != R_BFIN_BYTE4_DATA | |
4141 | && ELF32_R_TYPE (rel->r_info) != R_BFIN_FUNCDESC) | |
4142 | continue; | |
4143 | ||
4144 | if (_bfd_elf_section_offset (sec->output_section->owner, | |
4145 | info, sec, rel->r_offset) | |
4146 | != (bfd_vma)-1) | |
4147 | continue; | |
4148 | ||
4149 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4150 | if (r_symndx < symtab_hdr->sh_info) | |
4151 | h = NULL; | |
4152 | else | |
4153 | { | |
4154 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4155 | while (h->root.type == bfd_link_hash_indirect | |
4156 | || h->root.type == bfd_link_hash_warning) | |
4157 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
4158 | } | |
4159 | ||
4160 | if (h != NULL) | |
4161 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4162 | abfd, h, | |
4163 | rel->r_addend, NO_INSERT); | |
4164 | else | |
4165 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info), | |
4166 | abfd, r_symndx, | |
4167 | rel->r_addend, NO_INSERT); | |
4168 | ||
4169 | if (! picrel) | |
4170 | return FALSE; | |
4171 | ||
4172 | *changed = TRUE; | |
4173 | dinfo = bfinfdpic_dynamic_got_plt_info (info); | |
4174 | ||
4175 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, TRUE); | |
4176 | if (ELF32_R_TYPE (rel->r_info) == R_BFIN_BYTE4_DATA) | |
4177 | picrel->relocs32--; | |
4178 | else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */ | |
4179 | picrel->relocsfd--; | |
4180 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, FALSE); | |
4181 | } | |
4182 | ||
4183 | return TRUE; | |
4184 | } | |
4185 | ||
4186 | static bfd_boolean | |
4187 | bfinfdpic_elf_discard_info (bfd *ibfd, | |
4188 | struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
4189 | struct bfd_link_info *info) | |
4190 | { | |
4191 | bfd_boolean changed = FALSE; | |
4192 | asection *s; | |
4193 | bfd *obfd = NULL; | |
4194 | ||
4195 | /* Account for relaxation of .eh_frame section. */ | |
4196 | for (s = ibfd->sections; s; s = s->next) | |
dbaa2011 | 4197 | if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
6a9adeca BS |
4198 | { |
4199 | if (!_bfinfdpic_check_discarded_relocs (ibfd, s, info, &changed)) | |
4200 | return FALSE; | |
4201 | obfd = s->output_section->owner; | |
4202 | } | |
4203 | ||
4204 | if (changed) | |
4205 | { | |
4206 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4207 | ||
4208 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4209 | memcpy (&gpinfo.g, bfinfdpic_dynamic_got_plt_info (info), | |
4210 | sizeof (gpinfo.g)); | |
4211 | ||
4212 | /* Clear GOT and PLT assignments. */ | |
4213 | htab_traverse (bfinfdpic_relocs_info (info), | |
4214 | _bfinfdpic_reset_got_plt_entries, | |
4215 | NULL); | |
4216 | ||
4217 | if (!_bfinfdpic_size_got_plt (obfd, &gpinfo)) | |
4218 | return FALSE; | |
4219 | } | |
4220 | ||
4221 | return TRUE; | |
4222 | } | |
4223 | ||
48d502e1 BS |
4224 | static bfd_boolean |
4225 | elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd, | |
4226 | struct bfd_link_info *info) | |
4227 | { | |
4228 | bfd *dynobj; | |
4229 | asection *sdyn; | |
4230 | ||
4231 | dynobj = elf_hash_table (info)->dynobj; | |
4232 | ||
4233 | if (bfinfdpic_got_section (info)) | |
4234 | { | |
4235 | BFD_ASSERT (bfinfdpic_gotrel_section (info)->size | |
ed3056eb NC |
4236 | /* PR 17334: It appears that the GOT section can end up |
4237 | being bigger than the number of relocs. Presumably | |
4238 | because some relocs have been deleted. A test case has | |
4239 | yet to be generated for verify this, but in the meantime | |
4240 | the test below has been changed from == to >= so that | |
4241 | applications can continue to be built. */ | |
4242 | >= (bfinfdpic_gotrel_section (info)->reloc_count | |
48d502e1 BS |
4243 | * sizeof (Elf32_External_Rel))); |
4244 | ||
4245 | if (bfinfdpic_gotfixup_section (info)) | |
4246 | { | |
4247 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; | |
4248 | bfd_vma got_value = hgot->root.u.def.value | |
4249 | + hgot->root.u.def.section->output_section->vma | |
4250 | + hgot->root.u.def.section->output_offset; | |
4251 | ||
4252 | _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info), | |
4253 | got_value, 0); | |
4254 | ||
4255 | if (bfinfdpic_gotfixup_section (info)->size | |
4256 | != (bfinfdpic_gotfixup_section (info)->reloc_count * 4)) | |
0f64bb02 | 4257 | { |
4eca0228 | 4258 | _bfd_error_handler |
48d502e1 | 4259 | ("LINKER BUG: .rofixup section size mismatch"); |
0f64bb02 CM |
4260 | return FALSE; |
4261 | } | |
4262 | } | |
4263 | } | |
48d502e1 BS |
4264 | if (elf_hash_table (info)->dynamic_sections_created) |
4265 | { | |
4266 | BFD_ASSERT (bfinfdpic_pltrel_section (info)->size | |
4267 | == (bfinfdpic_pltrel_section (info)->reloc_count | |
4268 | * sizeof (Elf32_External_Rel))); | |
4269 | } | |
4270 | ||
3d4d4302 | 4271 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
48d502e1 BS |
4272 | |
4273 | if (elf_hash_table (info)->dynamic_sections_created) | |
4274 | { | |
4275 | Elf32_External_Dyn * dyncon; | |
4276 | Elf32_External_Dyn * dynconend; | |
4277 | ||
4278 | BFD_ASSERT (sdyn != NULL); | |
4279 | ||
4280 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4281 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
4282 | ||
4283 | for (; dyncon < dynconend; dyncon++) | |
4284 | { | |
4285 | Elf_Internal_Dyn dyn; | |
4286 | ||
4287 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4288 | ||
4289 | switch (dyn.d_tag) | |
4290 | { | |
4291 | default: | |
4292 | break; | |
4293 | ||
4294 | case DT_PLTGOT: | |
4295 | dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma | |
4296 | + bfinfdpic_got_section (info)->output_offset | |
4297 | + bfinfdpic_got_initial_offset (info); | |
4298 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4299 | break; | |
4300 | ||
4301 | case DT_JMPREL: | |
4302 | dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info) | |
4303 | ->output_section->vma | |
4304 | + bfinfdpic_pltrel_section (info)->output_offset; | |
4305 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4306 | break; | |
4307 | ||
4308 | case DT_PLTRELSZ: | |
4309 | dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size; | |
4310 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4311 | break; | |
4312 | } | |
4313 | } | |
4314 | } | |
4315 | ||
4316 | return TRUE; | |
4317 | } | |
4318 | ||
4319 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4320 | regular object. */ | |
4321 | ||
4322 | static bfd_boolean | |
2c3fc389 NC |
4323 | elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info *info, |
4324 | struct elf_link_hash_entry *h) | |
48d502e1 BS |
4325 | { |
4326 | bfd * dynobj; | |
4327 | ||
4328 | dynobj = elf_hash_table (info)->dynobj; | |
4329 | ||
4330 | /* Make sure we know what is going on here. */ | |
4331 | BFD_ASSERT (dynobj != NULL | |
60d67dc8 | 4332 | && (h->is_weakalias |
48d502e1 BS |
4333 | || (h->def_dynamic |
4334 | && h->ref_regular | |
4335 | && !h->def_regular))); | |
4336 | ||
4337 | /* If this is a weak symbol, and there is a real definition, the | |
4338 | processor independent code will have arranged for us to see the | |
4339 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 4340 | if (h->is_weakalias) |
48d502e1 | 4341 | { |
60d67dc8 AM |
4342 | struct elf_link_hash_entry *def = weakdef (h); |
4343 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
4344 | h->root.u.def.section = def->root.u.def.section; | |
4345 | h->root.u.def.value = def->root.u.def.value; | |
48d502e1 | 4346 | } |
0f64bb02 CM |
4347 | |
4348 | return TRUE; | |
4349 | } | |
4350 | ||
48d502e1 BS |
4351 | /* Perform any actions needed for dynamic symbols. */ |
4352 | ||
4353 | static bfd_boolean | |
4354 | elf32_bfinfdpic_finish_dynamic_symbol | |
4355 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4356 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4357 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, | |
4358 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) | |
0f64bb02 | 4359 | { |
48d502e1 BS |
4360 | return TRUE; |
4361 | } | |
0f64bb02 | 4362 | |
48d502e1 BS |
4363 | /* Decide whether to attempt to turn absptr or lsda encodings in |
4364 | shared libraries into pcrel within the given input section. */ | |
0f64bb02 | 4365 | |
48d502e1 BS |
4366 | static bfd_boolean |
4367 | bfinfdpic_elf_use_relative_eh_frame | |
4368 | (bfd *input_bfd ATTRIBUTE_UNUSED, | |
4369 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4370 | asection *eh_frame_section ATTRIBUTE_UNUSED) | |
4371 | { | |
4372 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ | |
4373 | return FALSE; | |
4374 | } | |
0f64bb02 | 4375 | |
48d502e1 | 4376 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
0f64bb02 | 4377 | |
48d502e1 BS |
4378 | static bfd_byte |
4379 | bfinfdpic_elf_encode_eh_address (bfd *abfd, | |
4380 | struct bfd_link_info *info, | |
4381 | asection *osec, bfd_vma offset, | |
4382 | asection *loc_sec, bfd_vma loc_offset, | |
4383 | bfd_vma *encoded) | |
4384 | { | |
4385 | struct elf_link_hash_entry *h; | |
0f64bb02 | 4386 | |
48d502e1 BS |
4387 | h = elf_hash_table (info)->hgot; |
4388 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); | |
4389 | ||
4390 | if (! h || (_bfinfdpic_osec_to_segment (abfd, osec) | |
4391 | == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section))) | |
4392 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, | |
4393 | loc_sec, loc_offset, encoded); | |
4394 | ||
4395 | BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec) | |
4396 | == (_bfinfdpic_osec_to_segment | |
4397 | (abfd, h->root.u.def.section->output_section))); | |
4398 | ||
4399 | *encoded = osec->vma + offset | |
4400 | - (h->root.u.def.value | |
4401 | + h->root.u.def.section->output_section->vma | |
4402 | + h->root.u.def.section->output_offset); | |
4403 | ||
4404 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; | |
0f64bb02 CM |
4405 | } |
4406 | ||
4407 | ||
48d502e1 BS |
4408 | |
4409 | /* Look through the relocs for a section during the first phase. | |
4410 | ||
4411 | Besides handling virtual table relocs for gc, we have to deal with | |
4412 | all sorts of PIC-related relocations. We describe below the | |
4413 | general plan on how to handle such relocations, even though we only | |
4414 | collect information at this point, storing them in hash tables for | |
4415 | perusal of later passes. | |
4416 | ||
4417 | 32 relocations are propagated to the linker output when creating | |
4418 | position-independent output. LO16 and HI16 relocations are not | |
4419 | supposed to be encountered in this case. | |
4420 | ||
4421 | LABEL16 should always be resolvable by the linker, since it's only | |
4422 | used by branches. | |
4423 | ||
4424 | LABEL24, on the other hand, is used by calls. If it turns out that | |
4425 | the target of a call is a dynamic symbol, a PLT entry must be | |
4426 | created for it, which triggers the creation of a private function | |
4427 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. | |
4428 | ||
4429 | GPREL relocations require the referenced symbol to be in the same | |
4430 | segment as _gp, but this can only be checked later. | |
4431 | ||
4432 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to | |
4433 | exist. LABEL24 might as well, since it may require a PLT entry, | |
4434 | that will require a got. | |
4435 | ||
4436 | Non-FUNCDESC GOT relocations require a GOT entry to be created | |
4437 | regardless of whether the symbol is dynamic. However, since a | |
4438 | global symbol that turns out to not be exported may have the same | |
4439 | address of a non-dynamic symbol, we don't assign GOT entries at | |
4440 | this point, such that we can share them in this case. A relocation | |
4441 | for the GOT entry always has to be created, be it to offset a | |
4442 | private symbol by the section load address, be it to get the symbol | |
4443 | resolved dynamically. | |
4444 | ||
4445 | FUNCDESC GOT relocations require a GOT entry to be created, and | |
4446 | handled as if a FUNCDESC relocation was applied to the GOT entry in | |
4447 | an object file. | |
4448 | ||
4449 | FUNCDESC relocations referencing a symbol that turns out to NOT be | |
4450 | dynamic cause a private function descriptor to be created. The | |
4451 | FUNCDESC relocation then decays to a 32 relocation that points at | |
4452 | the private descriptor. If the symbol is dynamic, the FUNCDESC | |
4453 | relocation is propagated to the linker output, such that the | |
4454 | dynamic linker creates the canonical descriptor, pointing to the | |
4455 | dynamically-resolved definition of the function. | |
4456 | ||
4457 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic | |
4458 | symbols that are assigned to the same segment as the GOT, but we | |
4459 | can only check this later, after we know the complete set of | |
4460 | symbols defined and/or exported. | |
4461 | ||
4462 | FUNCDESC GOTOFF relocations require a function descriptor to be | |
4463 | created and, unless lazy binding is disabled or the symbol is not | |
4464 | dynamic, a lazy PLT entry. Since we can't tell at this point | |
4465 | whether a symbol is going to be dynamic, we have to decide later | |
4466 | whether to create a lazy PLT entry or bind the descriptor directly | |
4467 | to the private function. | |
4468 | ||
4469 | FUNCDESC_VALUE relocations are not supposed to be present in object | |
4470 | files, but they may very well be simply propagated to the linker | |
4471 | output, since they have no side effect. | |
4472 | ||
4473 | ||
4474 | A function descriptor always requires a FUNCDESC_VALUE relocation. | |
4475 | Whether it's in .plt.rel or not depends on whether lazy binding is | |
4476 | enabled and on whether the referenced symbol is dynamic. | |
4477 | ||
4478 | The existence of a lazy PLT requires the resolverStub lazy PLT | |
4479 | entry to be present. | |
4480 | ||
4481 | ||
4482 | As for assignment of GOT, PLT and lazy PLT entries, and private | |
4483 | descriptors, we might do them all sequentially, but we can do | |
4484 | better than that. For example, we can place GOT entries and | |
4485 | private function descriptors referenced using 12-bit operands | |
4486 | closer to the PIC register value, such that these relocations don't | |
4487 | overflow. Those that are only referenced with LO16 relocations | |
4488 | could come next, but we may as well place PLT-required function | |
4489 | descriptors in the 12-bit range to make them shorter. Symbols | |
4490 | referenced with LO16/HI16 may come next, but we may place | |
4491 | additional function descriptors in the 16-bit range if we can | |
4492 | reliably tell that we've already placed entries that are ever | |
4493 | referenced with only LO16. PLT entries are therefore generated as | |
4494 | small as possible, while not introducing relocation overflows in | |
4495 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be | |
4496 | generated before or after PLT entries, but not intermingled with | |
4497 | them, such that we can have more lazy PLT entries in range for a | |
4498 | branch to the resolverStub. The resolverStub should be emitted at | |
4499 | the most distant location from the first lazy PLT entry such that | |
4500 | it's still in range for a branch, or closer, if there isn't a need | |
4501 | for so many lazy PLT entries. Additional lazy PLT entries may be | |
4502 | emitted after the resolverStub, as long as branches are still in | |
4503 | range. If the branch goes out of range, longer lazy PLT entries | |
4504 | are emitted. | |
4505 | ||
4506 | We could further optimize PLT and lazy PLT entries by giving them | |
4507 | priority in assignment to closer-to-gr17 locations depending on the | |
4508 | number of occurrences of references to them (assuming a function | |
4509 | that's called more often is more important for performance, so its | |
4510 | PLT entry should be faster), or taking hints from the compiler. | |
4511 | Given infinite time and money... :-) */ | |
0f64bb02 CM |
4512 | |
4513 | static bfd_boolean | |
48d502e1 BS |
4514 | bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4515 | asection *sec, const Elf_Internal_Rela *relocs) | |
0f64bb02 CM |
4516 | { |
4517 | Elf_Internal_Shdr *symtab_hdr; | |
5582a088 | 4518 | struct elf_link_hash_entry **sym_hashes; |
48d502e1 BS |
4519 | const Elf_Internal_Rela *rel; |
4520 | const Elf_Internal_Rela *rel_end; | |
0f64bb02 | 4521 | bfd *dynobj; |
48d502e1 | 4522 | struct bfinfdpic_relocs_info *picrel; |
0f64bb02 | 4523 | |
0e1862bb | 4524 | if (bfd_link_relocatable (info)) |
0f64bb02 CM |
4525 | return TRUE; |
4526 | ||
4527 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4528 | sym_hashes = elf_sym_hashes (abfd); | |
0f64bb02 | 4529 | |
48d502e1 BS |
4530 | dynobj = elf_hash_table (info)->dynobj; |
4531 | rel_end = relocs + sec->reloc_count; | |
4532 | for (rel = relocs; rel < rel_end; rel++) | |
0f64bb02 | 4533 | { |
0f64bb02 | 4534 | struct elf_link_hash_entry *h; |
48d502e1 BS |
4535 | unsigned long r_symndx; |
4536 | ||
4537 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4538 | if (r_symndx < symtab_hdr->sh_info) | |
07d6d2b8 | 4539 | h = NULL; |
48d502e1 | 4540 | else |
07d6d2b8 | 4541 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
0f64bb02 CM |
4542 | |
4543 | switch (ELF32_R_TYPE (rel->r_info)) | |
4544 | { | |
48d502e1 BS |
4545 | case R_BFIN_GOT17M4: |
4546 | case R_BFIN_GOTHI: | |
4547 | case R_BFIN_GOTLO: | |
4548 | case R_BFIN_FUNCDESC_GOT17M4: | |
4549 | case R_BFIN_FUNCDESC_GOTHI: | |
4550 | case R_BFIN_FUNCDESC_GOTLO: | |
4551 | case R_BFIN_GOTOFF17M4: | |
4552 | case R_BFIN_GOTOFFHI: | |
4553 | case R_BFIN_GOTOFFLO: | |
4554 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
4555 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4556 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
4557 | case R_BFIN_FUNCDESC: | |
4558 | case R_BFIN_FUNCDESC_VALUE: | |
4559 | if (! IS_FDPIC (abfd)) | |
4560 | goto bad_reloc; | |
4561 | /* Fall through. */ | |
cb88ce9f BS |
4562 | case R_BFIN_PCREL24: |
4563 | case R_BFIN_PCREL24_JUMP_L: | |
4564 | case R_BFIN_BYTE4_DATA: | |
48d502e1 | 4565 | if (IS_FDPIC (abfd) && ! dynobj) |
0f64bb02 | 4566 | { |
48d502e1 BS |
4567 | elf_hash_table (info)->dynobj = dynobj = abfd; |
4568 | if (! _bfin_create_got_section (abfd, info)) | |
4569 | return FALSE; | |
0f64bb02 | 4570 | } |
48d502e1 | 4571 | if (! IS_FDPIC (abfd)) |
0f64bb02 | 4572 | { |
48d502e1 BS |
4573 | picrel = NULL; |
4574 | break; | |
4575 | } | |
4576 | if (h != NULL) | |
4577 | { | |
4578 | if (h->dynindx == -1) | |
4579 | switch (ELF_ST_VISIBILITY (h->other)) | |
4580 | { | |
4581 | case STV_INTERNAL: | |
4582 | case STV_HIDDEN: | |
4583 | break; | |
4584 | default: | |
4585 | bfd_elf_link_record_dynamic_symbol (info, h); | |
4586 | break; | |
4587 | } | |
4588 | picrel | |
4589 | = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4590 | abfd, h, | |
4591 | rel->r_addend, INSERT); | |
0f64bb02 | 4592 | } |
48d502e1 BS |
4593 | else |
4594 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
4595 | (info), abfd, r_symndx, | |
4596 | rel->r_addend, INSERT); | |
4597 | if (! picrel) | |
4598 | return FALSE; | |
0f64bb02 | 4599 | break; |
48d502e1 | 4600 | |
0f64bb02 | 4601 | default: |
48d502e1 | 4602 | picrel = NULL; |
0f64bb02 CM |
4603 | break; |
4604 | } | |
48d502e1 BS |
4605 | |
4606 | switch (ELF32_R_TYPE (rel->r_info)) | |
07d6d2b8 | 4607 | { |
cb88ce9f BS |
4608 | case R_BFIN_PCREL24: |
4609 | case R_BFIN_PCREL24_JUMP_L: | |
48d502e1 | 4610 | if (IS_FDPIC (abfd)) |
2774f1a6 | 4611 | picrel->call++; |
48d502e1 BS |
4612 | break; |
4613 | ||
4614 | case R_BFIN_FUNCDESC_VALUE: | |
4615 | picrel->relocsfdv++; | |
fd361982 | 4616 | if (bfd_section_flags (sec) & SEC_ALLOC) |
48d502e1 BS |
4617 | picrel->relocs32--; |
4618 | /* Fall through. */ | |
4619 | ||
cb88ce9f | 4620 | case R_BFIN_BYTE4_DATA: |
48d502e1 BS |
4621 | if (! IS_FDPIC (abfd)) |
4622 | break; | |
4623 | ||
2774f1a6 | 4624 | picrel->sym++; |
fd361982 | 4625 | if (bfd_section_flags (sec) & SEC_ALLOC) |
48d502e1 BS |
4626 | picrel->relocs32++; |
4627 | break; | |
4628 | ||
4629 | case R_BFIN_GOT17M4: | |
2774f1a6 | 4630 | picrel->got17m4++; |
48d502e1 BS |
4631 | break; |
4632 | ||
4633 | case R_BFIN_GOTHI: | |
4634 | case R_BFIN_GOTLO: | |
2774f1a6 | 4635 | picrel->gothilo++; |
48d502e1 BS |
4636 | break; |
4637 | ||
4638 | case R_BFIN_FUNCDESC_GOT17M4: | |
2774f1a6 | 4639 | picrel->fdgot17m4++; |
48d502e1 BS |
4640 | break; |
4641 | ||
4642 | case R_BFIN_FUNCDESC_GOTHI: | |
4643 | case R_BFIN_FUNCDESC_GOTLO: | |
2774f1a6 | 4644 | picrel->fdgothilo++; |
48d502e1 BS |
4645 | break; |
4646 | ||
4647 | case R_BFIN_GOTOFF17M4: | |
4648 | case R_BFIN_GOTOFFHI: | |
4649 | case R_BFIN_GOTOFFLO: | |
2774f1a6 | 4650 | picrel->gotoff++; |
48d502e1 BS |
4651 | break; |
4652 | ||
4653 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2774f1a6 | 4654 | picrel->fdgoff17m4++; |
48d502e1 BS |
4655 | break; |
4656 | ||
4657 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4658 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2774f1a6 | 4659 | picrel->fdgoffhilo++; |
48d502e1 BS |
4660 | break; |
4661 | ||
4662 | case R_BFIN_FUNCDESC: | |
2774f1a6 | 4663 | picrel->fd++; |
48d502e1 BS |
4664 | picrel->relocsfd++; |
4665 | break; | |
4666 | ||
07d6d2b8 AM |
4667 | /* This relocation describes the C++ object vtable hierarchy. |
4668 | Reconstruct it for later use during GC. */ | |
4669 | case R_BFIN_GNU_VTINHERIT: | |
4670 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4671 | return FALSE; | |
4672 | break; | |
4673 | ||
4674 | /* This relocation describes which C++ vtable entries are actually | |
4675 | used. Record for later use during GC. */ | |
4676 | case R_BFIN_GNU_VTENTRY: | |
4677 | BFD_ASSERT (h != NULL); | |
4678 | if (h != NULL | |
4679 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
4680 | return FALSE; | |
4681 | break; | |
48d502e1 | 4682 | |
cb88ce9f BS |
4683 | case R_BFIN_HUIMM16: |
4684 | case R_BFIN_LUIMM16: | |
4685 | case R_BFIN_PCREL12_JUMP_S: | |
4686 | case R_BFIN_PCREL10: | |
48d502e1 BS |
4687 | break; |
4688 | ||
4689 | default: | |
4690 | bad_reloc: | |
4eca0228 | 4691 | _bfd_error_handler |
695344c0 | 4692 | /* xgettext:c-format */ |
0aa13fee | 4693 | (_("%pB: unsupported relocation type %#x"), |
d42c267e | 4694 | abfd, (int) ELF32_R_TYPE (rel->r_info)); |
48d502e1 | 4695 | return FALSE; |
07d6d2b8 | 4696 | } |
0f64bb02 CM |
4697 | } |
4698 | ||
4699 | return TRUE; | |
4700 | } | |
4701 | ||
48d502e1 BS |
4702 | /* Set the right machine number for a Blackfin ELF file. */ |
4703 | ||
4704 | static bfd_boolean | |
4705 | elf32_bfin_object_p (bfd *abfd) | |
4706 | { | |
4707 | bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0); | |
4708 | return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0) | |
4709 | == (IS_FDPIC (abfd))); | |
4710 | } | |
0f64bb02 | 4711 | |
0f64bb02 | 4712 | static bfd_boolean |
48d502e1 | 4713 | elf32_bfin_set_private_flags (bfd * abfd, flagword flags) |
0f64bb02 | 4714 | { |
48d502e1 BS |
4715 | elf_elfheader (abfd)->e_flags = flags; |
4716 | elf_flags_init (abfd) = TRUE; | |
4717 | return TRUE; | |
4718 | } | |
0f64bb02 | 4719 | |
0f64bb02 CM |
4720 | /* Display the flags field. */ |
4721 | static bfd_boolean | |
2c3fc389 | 4722 | elf32_bfin_print_private_bfd_data (bfd * abfd, void * ptr) |
0f64bb02 CM |
4723 | { |
4724 | FILE *file = (FILE *) ptr; | |
48d502e1 | 4725 | flagword flags; |
0f64bb02 CM |
4726 | |
4727 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4728 | ||
4729 | /* Print normal ELF private data. */ | |
4730 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4731 | ||
48d502e1 | 4732 | flags = elf_elfheader (abfd)->e_flags; |
0f64bb02 CM |
4733 | |
4734 | /* xgettext:c-format */ | |
4735 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4736 | ||
48d502e1 BS |
4737 | if (flags & EF_BFIN_PIC) |
4738 | fprintf (file, " -fpic"); | |
4739 | ||
4740 | if (flags & EF_BFIN_FDPIC) | |
4741 | fprintf (file, " -mfdpic"); | |
4742 | ||
0f64bb02 CM |
4743 | fputc ('\n', file); |
4744 | ||
4745 | return TRUE; | |
4746 | } | |
4747 | ||
48d502e1 BS |
4748 | /* Merge backend specific data from an object file to the output |
4749 | object file when linking. */ | |
4750 | ||
4751 | static bfd_boolean | |
50e03d47 | 4752 | elf32_bfin_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
48d502e1 | 4753 | { |
50e03d47 | 4754 | bfd *obfd = info->output_bfd; |
7a84e3da | 4755 | flagword old_flags, new_flags; |
48d502e1 BS |
4756 | bfd_boolean error = FALSE; |
4757 | ||
4758 | new_flags = elf_elfheader (ibfd)->e_flags; | |
4759 | old_flags = elf_elfheader (obfd)->e_flags; | |
4760 | ||
4761 | if (new_flags & EF_BFIN_FDPIC) | |
4762 | new_flags &= ~EF_BFIN_PIC; | |
4763 | ||
c7e2358a AM |
4764 | #ifndef DEBUG |
4765 | if (0) | |
4766 | #endif | |
4eca0228 | 4767 | _bfd_error_handler |
871b3ab2 | 4768 | ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %pB", |
dae82561 | 4769 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", ibfd); |
48d502e1 BS |
4770 | |
4771 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
4772 | { | |
4773 | elf_flags_init (obfd) = TRUE; | |
7a84e3da | 4774 | elf_elfheader (obfd)->e_flags = new_flags; |
48d502e1 BS |
4775 | } |
4776 | ||
7a84e3da | 4777 | if (((new_flags & EF_BFIN_FDPIC) == 0) != (! IS_FDPIC (obfd))) |
48d502e1 BS |
4778 | { |
4779 | error = TRUE; | |
4780 | if (IS_FDPIC (obfd)) | |
4eca0228 | 4781 | _bfd_error_handler |
871b3ab2 | 4782 | (_("%pB: cannot link non-fdpic object file into fdpic executable"), |
dae82561 | 4783 | ibfd); |
48d502e1 | 4784 | else |
4eca0228 | 4785 | _bfd_error_handler |
871b3ab2 | 4786 | (_("%pB: cannot link fdpic object file into non-fdpic executable"), |
dae82561 | 4787 | ibfd); |
48d502e1 BS |
4788 | } |
4789 | ||
4790 | if (error) | |
4791 | bfd_set_error (bfd_error_bad_value); | |
4792 | ||
4793 | return !error; | |
4794 | } | |
4795 | \f | |
0f64bb02 CM |
4796 | /* bfin ELF linker hash entry. */ |
4797 | ||
4798 | struct bfin_link_hash_entry | |
4799 | { | |
4800 | struct elf_link_hash_entry root; | |
4801 | ||
4802 | /* Number of PC relative relocs copied for this symbol. */ | |
4803 | struct bfin_pcrel_relocs_copied *pcrel_relocs_copied; | |
4804 | }; | |
4805 | ||
4806 | /* bfin ELF linker hash table. */ | |
4807 | ||
4808 | struct bfin_link_hash_table | |
4809 | { | |
4810 | struct elf_link_hash_table root; | |
4811 | ||
87d72d41 AM |
4812 | /* Small local sym cache. */ |
4813 | struct sym_cache sym_cache; | |
0f64bb02 CM |
4814 | }; |
4815 | ||
4816 | #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent)) | |
4817 | ||
4818 | static struct bfd_hash_entry * | |
4819 | bfin_link_hash_newfunc (struct bfd_hash_entry *entry, | |
48d502e1 | 4820 | struct bfd_hash_table *table, const char *string) |
0f64bb02 CM |
4821 | { |
4822 | struct bfd_hash_entry *ret = entry; | |
4823 | ||
4824 | /* Allocate the structure if it has not already been allocated by a | |
4825 | subclass. */ | |
4826 | if (ret == NULL) | |
4827 | ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry)); | |
4828 | if (ret == NULL) | |
4829 | return ret; | |
4830 | ||
4831 | /* Call the allocation method of the superclass. */ | |
4832 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); | |
4833 | if (ret != NULL) | |
4834 | bfin_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
4835 | ||
4836 | return ret; | |
4837 | } | |
4838 | ||
4839 | /* Create an bfin ELF linker hash table. */ | |
4840 | ||
4841 | static struct bfd_link_hash_table * | |
4842 | bfin_link_hash_table_create (bfd * abfd) | |
4843 | { | |
4844 | struct bfin_link_hash_table *ret; | |
4845 | bfd_size_type amt = sizeof (struct bfin_link_hash_table); | |
4846 | ||
22cdc249 | 4847 | ret = bfd_zmalloc (amt); |
48d502e1 | 4848 | if (ret == NULL) |
0f64bb02 CM |
4849 | return NULL; |
4850 | ||
4851 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
66eb6687 | 4852 | bfin_link_hash_newfunc, |
4dfe6ac6 NC |
4853 | sizeof (struct elf_link_hash_entry), |
4854 | BFIN_ELF_DATA)) | |
0f64bb02 CM |
4855 | { |
4856 | free (ret); | |
4857 | return NULL; | |
4858 | } | |
4859 | ||
87d72d41 | 4860 | ret->sym_cache.abfd = NULL; |
0f64bb02 CM |
4861 | |
4862 | return &ret->root.root; | |
4863 | } | |
4864 | ||
4865 | /* The size in bytes of an entry in the procedure linkage table. */ | |
4866 | ||
4867 | /* Finish up the dynamic sections. */ | |
4868 | ||
4869 | static bfd_boolean | |
4870 | bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
2c3fc389 | 4871 | struct bfd_link_info *info) |
0f64bb02 CM |
4872 | { |
4873 | bfd *dynobj; | |
4874 | asection *sdyn; | |
4875 | ||
4876 | dynobj = elf_hash_table (info)->dynobj; | |
4877 | ||
3d4d4302 | 4878 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
0f64bb02 CM |
4879 | |
4880 | if (elf_hash_table (info)->dynamic_sections_created) | |
4881 | { | |
4882 | Elf32_External_Dyn *dyncon, *dynconend; | |
4883 | ||
4884 | BFD_ASSERT (sdyn != NULL); | |
4885 | ||
4886 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4887 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
4888 | for (; dyncon < dynconend; dyncon++) | |
4889 | { | |
4890 | Elf_Internal_Dyn dyn; | |
4891 | ||
4892 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4893 | ||
4894 | } | |
4895 | ||
4896 | } | |
4897 | return TRUE; | |
4898 | } | |
4899 | ||
4900 | /* Finish up dynamic symbol handling. We set the contents of various | |
4901 | dynamic sections here. */ | |
4902 | ||
4903 | static bfd_boolean | |
4904 | bfin_finish_dynamic_symbol (bfd * output_bfd, | |
2c3fc389 NC |
4905 | struct bfd_link_info *info, |
4906 | struct elf_link_hash_entry *h, | |
4907 | Elf_Internal_Sym * sym) | |
0f64bb02 | 4908 | { |
0f64bb02 CM |
4909 | if (h->got.offset != (bfd_vma) - 1) |
4910 | { | |
4911 | asection *sgot; | |
4912 | asection *srela; | |
4913 | Elf_Internal_Rela rela; | |
4914 | bfd_byte *loc; | |
4915 | ||
4916 | /* This symbol has an entry in the global offset table. | |
07d6d2b8 | 4917 | Set it up. */ |
0f64bb02 | 4918 | |
ce558b89 AM |
4919 | sgot = elf_hash_table (info)->sgot; |
4920 | srela = elf_hash_table (info)->srelgot; | |
0f64bb02 CM |
4921 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4922 | ||
4923 | rela.r_offset = (sgot->output_section->vma | |
4924 | + sgot->output_offset | |
4925 | + (h->got.offset & ~(bfd_vma) 1)); | |
4926 | ||
4927 | /* If this is a -Bsymbolic link, and the symbol is defined | |
07d6d2b8 AM |
4928 | locally, we just want to emit a RELATIVE reloc. Likewise if |
4929 | the symbol was forced to be local because of a version file. | |
4930 | The entry in the global offset table will already have been | |
4931 | initialized in the relocate_section function. */ | |
0e1862bb | 4932 | if (bfd_link_pic (info) |
0f64bb02 CM |
4933 | && (info->symbolic |
4934 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
4935 | { | |
4eca0228 AM |
4936 | _bfd_error_handler (_("*** check this relocation %s"), |
4937 | __FUNCTION__); | |
cb88ce9f | 4938 | rela.r_info = ELF32_R_INFO (0, R_BFIN_PCREL24); |
0f64bb02 CM |
4939 | rela.r_addend = bfd_get_signed_32 (output_bfd, |
4940 | (sgot->contents | |
4941 | + | |
4942 | (h->got. | |
4943 | offset & ~(bfd_vma) 1))); | |
4944 | } | |
4945 | else | |
4946 | { | |
4947 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4948 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); | |
cb88ce9f | 4949 | rela.r_info = ELF32_R_INFO (h->dynindx, R_BFIN_GOT); |
0f64bb02 CM |
4950 | rela.r_addend = 0; |
4951 | } | |
4952 | ||
4953 | loc = srela->contents; | |
4954 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
4955 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
4956 | } | |
4957 | ||
4958 | if (h->needs_copy) | |
4959 | { | |
4960 | BFD_ASSERT (0); | |
4961 | } | |
4962 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5592d7ec | 4963 | if (strcmp (h->root.root.string, "__DYNAMIC") == 0 |
22edb2f1 | 4964 | || h == elf_hash_table (info)->hgot) |
0f64bb02 CM |
4965 | sym->st_shndx = SHN_ABS; |
4966 | ||
4967 | return TRUE; | |
4968 | } | |
4969 | ||
4970 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4971 | regular object. The current definition is in some section of the | |
4972 | dynamic object, but we're not including those sections. We have to | |
4973 | change the definition to something the rest of the link can | |
4974 | understand. */ | |
4975 | ||
4976 | static bfd_boolean | |
4977 | bfin_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2c3fc389 | 4978 | struct elf_link_hash_entry *h) |
0f64bb02 CM |
4979 | { |
4980 | bfd *dynobj; | |
4981 | asection *s; | |
4982 | unsigned int power_of_two; | |
4983 | ||
4984 | dynobj = elf_hash_table (info)->dynobj; | |
4985 | ||
4986 | /* Make sure we know what is going on here. */ | |
4987 | BFD_ASSERT (dynobj != NULL | |
4988 | && (h->needs_plt | |
60d67dc8 | 4989 | || h->is_weakalias |
0f64bb02 CM |
4990 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); |
4991 | ||
4992 | /* If this is a function, put it in the procedure linkage table. We | |
4993 | will fill in the contents of the procedure linkage table later, | |
4994 | when we know the address of the .got section. */ | |
4995 | if (h->type == STT_FUNC || h->needs_plt) | |
4996 | { | |
4997 | BFD_ASSERT(0); | |
4998 | } | |
4999 | ||
5000 | /* If this is a weak symbol, and there is a real definition, the | |
5001 | processor independent code will have arranged for us to see the | |
5002 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 5003 | if (h->is_weakalias) |
0f64bb02 | 5004 | { |
60d67dc8 AM |
5005 | struct elf_link_hash_entry *def = weakdef (h); |
5006 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
5007 | h->root.u.def.section = def->root.u.def.section; | |
5008 | h->root.u.def.value = def->root.u.def.value; | |
0f64bb02 CM |
5009 | return TRUE; |
5010 | } | |
5011 | ||
5012 | /* This is a reference to a symbol defined by a dynamic object which | |
5013 | is not a function. */ | |
5014 | ||
5015 | /* If we are creating a shared library, we must presume that the | |
5016 | only references to the symbol are via the global offset table. | |
5017 | For such cases we need not do anything here; the relocations will | |
5018 | be handled correctly by relocate_section. */ | |
0e1862bb | 5019 | if (bfd_link_pic (info)) |
0f64bb02 CM |
5020 | return TRUE; |
5021 | ||
5022 | /* We must allocate the symbol in our .dynbss section, which will | |
5023 | become part of the .bss section of the executable. There will be | |
5024 | an entry for this symbol in the .dynsym section. The dynamic | |
5025 | object will contain position independent code, so all references | |
5026 | from the dynamic object to this symbol will go through the global | |
5027 | offset table. The dynamic linker will use the .dynsym entry to | |
5028 | determine the address it must put in the global offset table, so | |
5029 | both the dynamic object and the regular object will refer to the | |
5030 | same memory location for the variable. */ | |
5031 | ||
3d4d4302 | 5032 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
0f64bb02 CM |
5033 | BFD_ASSERT (s != NULL); |
5034 | ||
1b857aee NC |
5035 | #if 0 /* Bfin does not currently have a COPY reloc. */ |
5036 | /* We must generate a R_BFIN_COPY reloc to tell the dynamic linker to | |
0f64bb02 CM |
5037 | copy the initial value out of the dynamic object and into the |
5038 | runtime process image. We need to remember the offset into the | |
5039 | .rela.bss section we are going to use. */ | |
5040 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5041 | { | |
5042 | asection *srel; | |
5043 | ||
3d4d4302 | 5044 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
0f64bb02 CM |
5045 | BFD_ASSERT (srel != NULL); |
5046 | srel->size += sizeof (Elf32_External_Rela); | |
5047 | h->needs_copy = 1; | |
5048 | } | |
1b857aee NC |
5049 | #else |
5050 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5051 | { | |
4eca0228 | 5052 | _bfd_error_handler (_("the bfin target does not currently support the generation of copy relocations")); |
1b857aee NC |
5053 | return FALSE; |
5054 | } | |
5055 | #endif | |
0f64bb02 CM |
5056 | /* We need to figure out the alignment required for this symbol. I |
5057 | have no idea how ELF linkers handle this. */ | |
5058 | power_of_two = bfd_log2 (h->size); | |
5059 | if (power_of_two > 3) | |
5060 | power_of_two = 3; | |
5061 | ||
5062 | /* Apply the required alignment. */ | |
5063 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
fd361982 | 5064 | if (power_of_two > bfd_section_alignment (s)) |
0f64bb02 | 5065 | { |
fd361982 | 5066 | if (!bfd_set_section_alignment (s, power_of_two)) |
0f64bb02 CM |
5067 | return FALSE; |
5068 | } | |
5069 | ||
5070 | /* Define the symbol as being at this point in the section. */ | |
5071 | h->root.u.def.section = s; | |
5072 | h->root.u.def.value = s->size; | |
5073 | ||
5074 | /* Increment the section size to make room for the symbol. */ | |
5075 | s->size += h->size; | |
5076 | ||
5077 | return TRUE; | |
5078 | } | |
5079 | ||
5080 | /* The bfin linker needs to keep track of the number of relocs that it | |
5081 | decides to copy in check_relocs for each symbol. This is so that it | |
5082 | can discard PC relative relocs if it doesn't need them when linking | |
5083 | with -Bsymbolic. We store the information in a field extending the | |
5084 | regular ELF linker hash table. */ | |
5085 | ||
5086 | /* This structure keeps track of the number of PC relative relocs we have | |
5087 | copied for a given symbol. */ | |
5088 | ||
5089 | struct bfin_pcrel_relocs_copied | |
5090 | { | |
5091 | /* Next section. */ | |
5092 | struct bfin_pcrel_relocs_copied *next; | |
5093 | /* A section in dynobj. */ | |
5094 | asection *section; | |
5095 | /* Number of relocs copied in this section. */ | |
5096 | bfd_size_type count; | |
5097 | }; | |
5098 | ||
5099 | /* This function is called via elf_link_hash_traverse if we are | |
5100 | creating a shared object. In the -Bsymbolic case it discards the | |
5101 | space allocated to copy PC relative relocs against symbols which | |
5102 | are defined in regular objects. For the normal shared case, it | |
5103 | discards space for pc-relative relocs that have become local due to | |
5104 | symbol visibility changes. We allocated space for them in the | |
5105 | check_relocs routine, but we won't fill them in in the | |
5106 | relocate_section routine. | |
5107 | ||
5108 | We also check whether any of the remaining relocations apply | |
5109 | against a readonly section, and set the DF_TEXTREL flag in this | |
5110 | case. */ | |
5111 | ||
5112 | static bfd_boolean | |
2c3fc389 | 5113 | bfin_discard_copies (struct elf_link_hash_entry *h, void * inf) |
0f64bb02 CM |
5114 | { |
5115 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5116 | struct bfin_pcrel_relocs_copied *s; | |
5117 | ||
0f64bb02 CM |
5118 | if (!h->def_regular || (!info->symbolic && !h->forced_local)) |
5119 | { | |
5120 | if ((info->flags & DF_TEXTREL) == 0) | |
5121 | { | |
5122 | /* Look for relocations against read-only sections. */ | |
5123 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5124 | s != NULL; s = s->next) | |
5125 | if ((s->section->flags & SEC_READONLY) != 0) | |
5126 | { | |
5127 | info->flags |= DF_TEXTREL; | |
5128 | break; | |
5129 | } | |
5130 | } | |
5131 | ||
5132 | return TRUE; | |
5133 | } | |
5134 | ||
5135 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5136 | s != NULL; s = s->next) | |
5137 | s->section->size -= s->count * sizeof (Elf32_External_Rela); | |
5138 | ||
5139 | return TRUE; | |
5140 | } | |
5141 | ||
0f64bb02 CM |
5142 | static bfd_boolean |
5143 | bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
2c3fc389 | 5144 | struct bfd_link_info *info) |
0f64bb02 CM |
5145 | { |
5146 | bfd *dynobj; | |
5147 | asection *s; | |
5148 | bfd_boolean relocs; | |
5149 | ||
5150 | dynobj = elf_hash_table (info)->dynobj; | |
5151 | BFD_ASSERT (dynobj != NULL); | |
5152 | ||
5153 | if (elf_hash_table (info)->dynamic_sections_created) | |
5154 | { | |
5155 | /* Set the contents of the .interp section to the interpreter. */ | |
9d45a7de | 5156 | if (bfd_link_executable (info) && !info->nointerp) |
0f64bb02 | 5157 | { |
3d4d4302 | 5158 | s = bfd_get_linker_section (dynobj, ".interp"); |
0f64bb02 CM |
5159 | BFD_ASSERT (s != NULL); |
5160 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5161 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5162 | } | |
5163 | } | |
5164 | else | |
5165 | { | |
5166 | /* We may have created entries in the .rela.got section. | |
07d6d2b8 AM |
5167 | However, if we are not creating the dynamic sections, we will |
5168 | not actually use these entries. Reset the size of .rela.got, | |
5169 | which will cause it to get stripped from the output file | |
5170 | below. */ | |
ce558b89 | 5171 | s = elf_hash_table (info)->srelgot; |
0f64bb02 CM |
5172 | if (s != NULL) |
5173 | s->size = 0; | |
5174 | } | |
5175 | ||
5176 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
5177 | PC relative relocs against symbols defined in a regular object. | |
5178 | For the normal shared case we discard the PC relative relocs | |
5179 | against symbols that have become local due to visibility changes. | |
5180 | We allocated space for them in the check_relocs routine, but we | |
5181 | will not fill them in in the relocate_section routine. */ | |
0e1862bb | 5182 | if (bfd_link_pic (info)) |
0f64bb02 | 5183 | elf_link_hash_traverse (elf_hash_table (info), |
2c3fc389 | 5184 | bfin_discard_copies, info); |
0f64bb02 CM |
5185 | |
5186 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
5187 | determined the sizes of the various dynamic sections. Allocate | |
5188 | memory for them. */ | |
5189 | relocs = FALSE; | |
5190 | for (s = dynobj->sections; s != NULL; s = s->next) | |
5191 | { | |
5192 | const char *name; | |
5193 | bfd_boolean strip; | |
5194 | ||
5195 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5196 | continue; | |
5197 | ||
5198 | /* It's OK to base decisions on the section name, because none | |
07d6d2b8 | 5199 | of the dynobj section names depend upon the input files. */ |
fd361982 | 5200 | name = bfd_section_name (s); |
0f64bb02 CM |
5201 | |
5202 | strip = FALSE; | |
5203 | ||
0112cd26 | 5204 | if (CONST_STRNEQ (name, ".rela")) |
0f64bb02 CM |
5205 | { |
5206 | if (s->size == 0) | |
5207 | { | |
5208 | /* If we don't need this section, strip it from the | |
07d6d2b8 AM |
5209 | output file. This is mostly to handle .rela.bss and |
5210 | .rela.plt. We must create both sections in | |
5211 | create_dynamic_sections, because they must be created | |
5212 | before the linker maps input sections to output | |
5213 | sections. The linker does that before | |
5214 | adjust_dynamic_symbol is called, and it is that | |
5215 | function which decides whether anything needs to go | |
5216 | into these sections. */ | |
0f64bb02 CM |
5217 | strip = TRUE; |
5218 | } | |
5219 | else | |
5220 | { | |
5221 | relocs = TRUE; | |
5222 | ||
5223 | /* We use the reloc_count field as a counter if we need | |
07d6d2b8 | 5224 | to copy relocs into the output file. */ |
0f64bb02 CM |
5225 | s->reloc_count = 0; |
5226 | } | |
5227 | } | |
0112cd26 | 5228 | else if (! CONST_STRNEQ (name, ".got")) |
0f64bb02 CM |
5229 | { |
5230 | /* It's not one of our sections, so don't allocate space. */ | |
5231 | continue; | |
5232 | } | |
5233 | ||
5234 | if (strip) | |
5235 | { | |
5236 | s->flags |= SEC_EXCLUDE; | |
5237 | continue; | |
5238 | } | |
5239 | ||
5240 | /* Allocate memory for the section contents. */ | |
5241 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. | |
07d6d2b8 AM |
5242 | Unused entries should be reclaimed before the section's contents |
5243 | are written out, but at the moment this does not happen. Thus in | |
5244 | order to prevent writing out garbage, we initialise the section's | |
5245 | contents to zero. */ | |
0f64bb02 CM |
5246 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
5247 | if (s->contents == NULL && s->size != 0) | |
5248 | return FALSE; | |
5249 | } | |
5250 | ||
5251 | if (elf_hash_table (info)->dynamic_sections_created) | |
5252 | { | |
5253 | /* Add some entries to the .dynamic section. We fill in the | |
07d6d2b8 AM |
5254 | values later, in bfin_finish_dynamic_sections, but we |
5255 | must add the entries now so that we get the correct size for | |
5256 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5257 | dynamic linker and used by the debugger. */ | |
0f64bb02 CM |
5258 | #define add_dynamic_entry(TAG, VAL) \ |
5259 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
5260 | ||
0e1862bb | 5261 | if (!bfd_link_pic (info)) |
0f64bb02 CM |
5262 | { |
5263 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
5264 | return FALSE; | |
5265 | } | |
5266 | ||
5267 | ||
5268 | if (relocs) | |
5269 | { | |
5270 | if (!add_dynamic_entry (DT_RELA, 0) | |
5271 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5272 | || !add_dynamic_entry (DT_RELAENT, | |
5273 | sizeof (Elf32_External_Rela))) | |
5274 | return FALSE; | |
5275 | } | |
5276 | ||
5277 | if ((info->flags & DF_TEXTREL) != 0) | |
5278 | { | |
5279 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5280 | return FALSE; | |
5281 | } | |
5282 | } | |
5283 | #undef add_dynamic_entry | |
5284 | ||
5285 | return TRUE; | |
5286 | } | |
48d502e1 | 5287 | \f |
0f64bb02 CM |
5288 | /* Given a .data section and a .emreloc in-memory section, store |
5289 | relocation information into the .emreloc section which can be | |
5290 | used at runtime to relocate the section. This is called by the | |
5291 | linker when the --embedded-relocs switch is used. This is called | |
5292 | after the add_symbols entry point has been called for all the | |
5293 | objects, and before the final_link entry point is called. */ | |
5294 | ||
5295 | bfd_boolean | |
2c3fc389 NC |
5296 | bfd_bfin_elf32_create_embedded_relocs (bfd *abfd, |
5297 | struct bfd_link_info *info, | |
5298 | asection *datasec, | |
5299 | asection *relsec, | |
5300 | char **errmsg) | |
0f64bb02 CM |
5301 | { |
5302 | Elf_Internal_Shdr *symtab_hdr; | |
5303 | Elf_Internal_Sym *isymbuf = NULL; | |
5304 | Elf_Internal_Rela *internal_relocs = NULL; | |
5305 | Elf_Internal_Rela *irel, *irelend; | |
5306 | bfd_byte *p; | |
5307 | bfd_size_type amt; | |
5308 | ||
0e1862bb | 5309 | BFD_ASSERT (! bfd_link_relocatable (info)); |
0f64bb02 CM |
5310 | |
5311 | *errmsg = NULL; | |
5312 | ||
5313 | if (datasec->reloc_count == 0) | |
5314 | return TRUE; | |
5315 | ||
5316 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5317 | ||
5318 | /* Get a copy of the native relocations. */ | |
5319 | internal_relocs = (_bfd_elf_link_read_relocs | |
2c3fc389 | 5320 | (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL, |
0f64bb02 CM |
5321 | info->keep_memory)); |
5322 | if (internal_relocs == NULL) | |
5323 | goto error_return; | |
5324 | ||
5325 | amt = (bfd_size_type) datasec->reloc_count * 12; | |
5326 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
5327 | if (relsec->contents == NULL) | |
5328 | goto error_return; | |
5329 | ||
5330 | p = relsec->contents; | |
5331 | ||
5332 | irelend = internal_relocs + datasec->reloc_count; | |
5333 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
5334 | { | |
5335 | asection *targetsec; | |
5336 | ||
5337 | /* We are going to write a four byte longword into the runtime | |
5338 | reloc section. The longword will be the address in the data | |
5339 | section which must be relocated. It is followed by the name | |
5340 | of the target section NUL-padded or truncated to 8 | |
5341 | characters. */ | |
5342 | ||
5343 | /* We can only relocate absolute longword relocs at run time. */ | |
cb88ce9f | 5344 | if (ELF32_R_TYPE (irel->r_info) != (int) R_BFIN_BYTE4_DATA) |
0f64bb02 | 5345 | { |
0aa13fee | 5346 | *errmsg = _("unsupported relocation type"); |
0f64bb02 CM |
5347 | bfd_set_error (bfd_error_bad_value); |
5348 | goto error_return; | |
5349 | } | |
5350 | ||
5351 | /* Get the target section referred to by the reloc. */ | |
5352 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5353 | { | |
5354 | /* A local symbol. */ | |
5355 | Elf_Internal_Sym *isym; | |
5356 | ||
5357 | /* Read this BFD's local symbols if we haven't done so already. */ | |
5358 | if (isymbuf == NULL) | |
5359 | { | |
5360 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5361 | if (isymbuf == NULL) | |
5362 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5363 | symtab_hdr->sh_info, 0, | |
5364 | NULL, NULL, NULL); | |
5365 | if (isymbuf == NULL) | |
5366 | goto error_return; | |
5367 | } | |
5368 | ||
5369 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5370 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5371 | } | |
5372 | else | |
5373 | { | |
5374 | unsigned long indx; | |
5375 | struct elf_link_hash_entry *h; | |
5376 | ||
5377 | /* An external symbol. */ | |
5378 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5379 | h = elf_sym_hashes (abfd)[indx]; | |
5380 | BFD_ASSERT (h != NULL); | |
5381 | if (h->root.type == bfd_link_hash_defined | |
5382 | || h->root.type == bfd_link_hash_defweak) | |
5383 | targetsec = h->root.u.def.section; | |
5384 | else | |
5385 | targetsec = NULL; | |
5386 | } | |
5387 | ||
5388 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
5389 | memset (p + 4, 0, 8); | |
5390 | if (targetsec != NULL) | |
9ba4c445 | 5391 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0f64bb02 CM |
5392 | } |
5393 | ||
5394 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
5395 | free (isymbuf); | |
5396 | if (internal_relocs != NULL | |
5397 | && elf_section_data (datasec)->relocs != internal_relocs) | |
5398 | free (internal_relocs); | |
5399 | return TRUE; | |
5400 | ||
5401 | error_return: | |
5402 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
5403 | free (isymbuf); | |
5404 | if (internal_relocs != NULL | |
5405 | && elf_section_data (datasec)->relocs != internal_relocs) | |
5406 | free (internal_relocs); | |
5407 | return FALSE; | |
5408 | } | |
b0a0b978 JZ |
5409 | |
5410 | struct bfd_elf_special_section const elf32_bfin_special_sections[] = | |
5411 | { | |
5412 | { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
5413 | { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
07d6d2b8 | 5414 | { NULL, 0, 0, 0, 0 } |
b0a0b978 JZ |
5415 | }; |
5416 | ||
48d502e1 | 5417 | \f |
6d00b590 | 5418 | #define TARGET_LITTLE_SYM bfin_elf32_vec |
0f64bb02 CM |
5419 | #define TARGET_LITTLE_NAME "elf32-bfin" |
5420 | #define ELF_ARCH bfd_arch_bfin | |
ae95ffa6 | 5421 | #define ELF_TARGET_ID BFIN_ELF_DATA |
3b55e94a | 5422 | #define ELF_MACHINE_CODE EM_BLACKFIN |
0f64bb02 CM |
5423 | #define ELF_MAXPAGESIZE 0x1000 |
5424 | #define elf_symbol_leading_char '_' | |
5425 | ||
5426 | #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup | |
157090f7 AM |
5427 | #define bfd_elf32_bfd_reloc_name_lookup \ |
5428 | bfin_bfd_reloc_name_lookup | |
0f64bb02 | 5429 | #define elf_info_to_howto bfin_info_to_howto |
f3185997 | 5430 | #define elf_info_to_howto_rel NULL |
48d502e1 | 5431 | #define elf_backend_object_p elf32_bfin_object_p |
0f64bb02 CM |
5432 | |
5433 | #define bfd_elf32_bfd_is_local_label_name \ | |
07d6d2b8 | 5434 | bfin_is_local_label_name |
0f64bb02 CM |
5435 | #define bfin_hash_table(p) \ |
5436 | ((struct bfin_link_hash_table *) (p)->hash) | |
5437 | ||
5438 | ||
5439 | ||
5440 | #define elf_backend_create_dynamic_sections \ | |
07d6d2b8 | 5441 | _bfd_elf_create_dynamic_sections |
0f64bb02 | 5442 | #define bfd_elf32_bfd_link_hash_table_create \ |
07d6d2b8 AM |
5443 | bfin_link_hash_table_create |
5444 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link | |
0f64bb02 | 5445 | |
07d6d2b8 | 5446 | #define elf_backend_check_relocs bfin_check_relocs |
0f64bb02 | 5447 | #define elf_backend_adjust_dynamic_symbol \ |
07d6d2b8 | 5448 | bfin_adjust_dynamic_symbol |
0f64bb02 | 5449 | #define elf_backend_size_dynamic_sections \ |
07d6d2b8 AM |
5450 | bfin_size_dynamic_sections |
5451 | #define elf_backend_relocate_section bfin_relocate_section | |
0f64bb02 | 5452 | #define elf_backend_finish_dynamic_symbol \ |
07d6d2b8 | 5453 | bfin_finish_dynamic_symbol |
0f64bb02 | 5454 | #define elf_backend_finish_dynamic_sections \ |
07d6d2b8 AM |
5455 | bfin_finish_dynamic_sections |
5456 | #define elf_backend_gc_mark_hook bfin_gc_mark_hook | |
0f64bb02 | 5457 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
07d6d2b8 | 5458 | elf32_bfin_merge_private_bfd_data |
0f64bb02 | 5459 | #define bfd_elf32_bfd_set_private_flags \ |
07d6d2b8 | 5460 | elf32_bfin_set_private_flags |
0f64bb02 | 5461 | #define bfd_elf32_bfd_print_private_bfd_data \ |
07d6d2b8 | 5462 | elf32_bfin_print_private_bfd_data |
781303ce | 5463 | #define elf_backend_final_write_processing \ |
07d6d2b8 AM |
5464 | elf32_bfin_final_write_processing |
5465 | #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class | |
04c3a755 | 5466 | #define elf_backend_stack_align 8 |
0f64bb02 | 5467 | #define elf_backend_can_gc_sections 1 |
b0a0b978 | 5468 | #define elf_backend_special_sections elf32_bfin_special_sections |
0f64bb02 CM |
5469 | #define elf_backend_can_refcount 1 |
5470 | #define elf_backend_want_got_plt 0 | |
5471 | #define elf_backend_plt_readonly 1 | |
5472 | #define elf_backend_want_plt_sym 0 | |
07d6d2b8 AM |
5473 | #define elf_backend_got_header_size 12 |
5474 | #define elf_backend_rela_normal 1 | |
0f64bb02 | 5475 | |
48d502e1 BS |
5476 | #include "elf32-target.h" |
5477 | ||
5478 | #undef TARGET_LITTLE_SYM | |
07d6d2b8 | 5479 | #define TARGET_LITTLE_SYM bfin_elf32_fdpic_vec |
48d502e1 BS |
5480 | #undef TARGET_LITTLE_NAME |
5481 | #define TARGET_LITTLE_NAME "elf32-bfinfdpic" | |
5482 | #undef elf32_bed | |
07d6d2b8 | 5483 | #define elf32_bed elf32_bfinfdpic_bed |
48d502e1 | 5484 | |
48d502e1 | 5485 | #undef elf_backend_got_header_size |
07d6d2b8 | 5486 | #define elf_backend_got_header_size 0 |
48d502e1 BS |
5487 | |
5488 | #undef elf_backend_relocate_section | |
07d6d2b8 | 5489 | #define elf_backend_relocate_section bfinfdpic_relocate_section |
48d502e1 | 5490 | #undef elf_backend_check_relocs |
07d6d2b8 | 5491 | #define elf_backend_check_relocs bfinfdpic_check_relocs |
48d502e1 BS |
5492 | |
5493 | #undef bfd_elf32_bfd_link_hash_table_create | |
5494 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5495 | bfinfdpic_elf_link_hash_table_create | |
5496 | #undef elf_backend_always_size_sections | |
5497 | #define elf_backend_always_size_sections \ | |
5498 | elf32_bfinfdpic_always_size_sections | |
48d502e1 BS |
5499 | |
5500 | #undef elf_backend_create_dynamic_sections | |
5501 | #define elf_backend_create_dynamic_sections \ | |
5502 | elf32_bfinfdpic_create_dynamic_sections | |
5503 | #undef elf_backend_adjust_dynamic_symbol | |
5504 | #define elf_backend_adjust_dynamic_symbol \ | |
5505 | elf32_bfinfdpic_adjust_dynamic_symbol | |
5506 | #undef elf_backend_size_dynamic_sections | |
5507 | #define elf_backend_size_dynamic_sections \ | |
5508 | elf32_bfinfdpic_size_dynamic_sections | |
5509 | #undef elf_backend_finish_dynamic_symbol | |
5510 | #define elf_backend_finish_dynamic_symbol \ | |
5511 | elf32_bfinfdpic_finish_dynamic_symbol | |
5512 | #undef elf_backend_finish_dynamic_sections | |
5513 | #define elf_backend_finish_dynamic_sections \ | |
5514 | elf32_bfinfdpic_finish_dynamic_sections | |
5515 | ||
6a9adeca BS |
5516 | #undef elf_backend_discard_info |
5517 | #define elf_backend_discard_info \ | |
5518 | bfinfdpic_elf_discard_info | |
48d502e1 BS |
5519 | #undef elf_backend_can_make_relative_eh_frame |
5520 | #define elf_backend_can_make_relative_eh_frame \ | |
5521 | bfinfdpic_elf_use_relative_eh_frame | |
5522 | #undef elf_backend_can_make_lsda_relative_eh_frame | |
5523 | #define elf_backend_can_make_lsda_relative_eh_frame \ | |
5524 | bfinfdpic_elf_use_relative_eh_frame | |
5525 | #undef elf_backend_encode_eh_address | |
5526 | #define elf_backend_encode_eh_address \ | |
5527 | bfinfdpic_elf_encode_eh_address | |
5528 | ||
5529 | #undef elf_backend_may_use_rel_p | |
07d6d2b8 | 5530 | #define elf_backend_may_use_rel_p 1 |
48d502e1 | 5531 | #undef elf_backend_may_use_rela_p |
07d6d2b8 | 5532 | #define elf_backend_may_use_rela_p 1 |
48d502e1 BS |
5533 | /* We use REL for dynamic relocations only. */ |
5534 | #undef elf_backend_default_use_rela_p | |
07d6d2b8 | 5535 | #define elf_backend_default_use_rela_p 1 |
48d502e1 BS |
5536 | |
5537 | #undef elf_backend_omit_section_dynsym | |
5538 | #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym | |
0f64bb02 CM |
5539 | |
5540 | #include "elf32-target.h" |