Commit | Line | Data |
---|---|---|
3b55e94a | 1 | /* ADI Blackfin BFD support for 32-bit ELF. |
dbaa2011 | 2 | Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
4dfe6ac6 | 3 | Free Software Foundation, Inc. |
0f64bb02 CM |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
0f64bb02 CM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
0f64bb02 | 21 | |
0f64bb02 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
0f64bb02 CM |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/bfin.h" | |
fa8f86ff | 27 | #include "dwarf2.h" |
48d502e1 | 28 | #include "hashtab.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, | |
37 | PTR data ATTRIBUTE_UNUSED, | |
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, | |
49 | arelent *reloc_entry, | |
50 | asymbol *symbol, | |
51 | PTR data, | |
52 | asection *input_section, | |
53 | bfd *output_bfd, | |
54 | char **error_message ATTRIBUTE_UNUSED) | |
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 | { | |
4a97a0e5 | 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 BS |
145 | bfin_imm16_reloc (bfd *abfd, |
146 | arelent *reloc_entry, | |
147 | asymbol *symbol, | |
148 | PTR 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, | |
218 | arelent *reloc_entry, | |
219 | asymbol *symbol, | |
220 | PTR data, | |
221 | asection *input_section, | |
222 | bfd *output_bfd, | |
3b55e94a | 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, | |
285 | asymbol *symbol, | |
286 | PTR data, | |
287 | asection *input_section, | |
288 | bfd *output_bfd, | |
289 | char **error_message ATTRIBUTE_UNUSED) | |
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 | ||
333 | if (howto->pc_relative == TRUE) | |
334 | { | |
335 | relocation -= input_section->output_section->vma + input_section->output_offset; | |
336 | ||
337 | if (howto->pcrel_offset == TRUE) | |
338 | relocation -= reloc_entry->address; | |
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, |
0f64bb02 | 352 | howto->bitsize, |
3b55e94a | 353 | howto->rightshift, |
0f64bb02 CM |
354 | bfd_arch_bits_per_address(abfd), |
355 | relocation); | |
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 | { | |
4a97a0e5 | 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 | { | |
381 | char x = bfd_get_8 (abfd, (char *) data + addr); | |
382 | DOIT (x); | |
383 | bfd_put_8 (abfd, x, (unsigned char *) data + addr); | |
384 | } | |
385 | break; | |
386 | ||
387 | case 1: | |
388 | { | |
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); | |
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 CM |
426 | 0, /* rightshift. */ |
427 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
428 | 32, /* bitsize. */ | |
429 | FALSE, /* pc_relative. */ | |
430 | 0, /* bitpos. */ | |
431 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
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 CM |
454 | 0, /* rightshift. */ |
455 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
456 | 32, /* bitsize. */ | |
457 | FALSE, /* pc_relative. */ | |
458 | 0, /* bitpos. */ | |
459 | complain_overflow_bitfield, /* complain_on_overflow. */ | |
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. */ |
0f64bb02 CM |
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 CM |
584 | 0, /* rightshift. */ |
585 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
586 | 32, /* bitsize. */ | |
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 CM |
598 | 0, /* rightshift. */ |
599 | 2, /* size (0 = byte, 1 = short, 2 = long). */ | |
600 | 32, /* bitsize. */ | |
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. */ | |
712 | HOWTO (R_BFIN_GOT17M4, /* type */ | |
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 BS |
721 | FALSE, /* partial_inplace */ |
722 | 0xffff, /* src_mask */ | |
723 | 0xffff, /* dst_mask */ | |
724 | FALSE), /* pcrel_offset */ | |
725 | ||
726 | /* The upper 16 bits of the GOT offset for the address of the | |
727 | symbol. */ | |
728 | HOWTO (R_BFIN_GOTHI, /* type */ | |
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 */ | |
738 | 0xffff, /* src_mask */ | |
739 | 0xffff, /* dst_mask */ | |
740 | FALSE), /* pcrel_offset */ | |
741 | ||
742 | /* The lower 16 bits of the GOT offset for the address of the | |
743 | symbol. */ | |
744 | HOWTO (R_BFIN_GOTLO, /* type */ | |
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 */ | |
756 | FALSE), /* pcrel_offset */ | |
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 */ | |
785 | 0xffff, /* src_mask */ | |
786 | 0xffff, /* dst_mask */ | |
787 | FALSE), /* pcrel_offset */ | |
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 */ | |
803 | FALSE), /* pcrel_offset */ | |
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 */ | |
819 | FALSE), /* pcrel_offset */ | |
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 */ | |
848 | 0xffff, /* src_mask */ | |
849 | 0xffff, /* dst_mask */ | |
850 | FALSE), /* pcrel_offset */ | |
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 */ | |
866 | FALSE), /* pcrel_offset */ | |
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 */ | |
882 | FALSE), /* pcrel_offset */ | |
883 | ||
884 | /* A 12-bit signed operand with the GOT offset for the address of | |
885 | the symbol. */ | |
886 | HOWTO (R_BFIN_GOTOFF17M4, /* type */ | |
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 */ | |
896 | 0xffff, /* src_mask */ | |
897 | 0xffff, /* dst_mask */ | |
898 | FALSE), /* pcrel_offset */ | |
899 | ||
900 | /* The upper 16 bits of the GOT offset for the address of the | |
901 | symbol. */ | |
902 | HOWTO (R_BFIN_GOTOFFHI, /* type */ | |
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 */ | |
914 | FALSE), /* pcrel_offset */ | |
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 */ | |
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. */ | |
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. */ | |
977 | ||
978 | /* GNU extension to record C++ vtable member usage. */ | |
979 | HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ | |
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. */ | |
992 | }; | |
993 | ||
994 | struct bfin_reloc_map | |
995 | { | |
996 | bfd_reloc_code_real_type bfd_reloc_val; | |
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 | ||
1044 | static void | |
1045 | bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, | |
1046 | arelent *cache_ptr, | |
1047 | Elf_Internal_Rela *dst) | |
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 | |
1060 | cache_ptr->howto = (reloc_howto_type *) NULL; | |
0f64bb02 | 1061 | } |
157090f7 | 1062 | |
0f64bb02 CM |
1063 | /* Given a BFD reloc type, return the howto. */ |
1064 | static reloc_howto_type * | |
1065 | bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1066 | bfd_reloc_code_real_type code) | |
1067 | { | |
1068 | unsigned int i; | |
1069 | unsigned int r_type = BFIN_RELOC_MIN; | |
1070 | ||
1071 | for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;) | |
1072 | if (bfin_reloc_map[i].bfd_reloc_val == code) | |
1073 | r_type = bfin_reloc_map[i].bfin_reloc_val; | |
1074 | ||
1075 | if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN) | |
1076 | return &bfin_howto_table [r_type]; | |
1077 | ||
0f64bb02 CM |
1078 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1079 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1080 | ||
1081 | return (reloc_howto_type *) NULL; | |
157090f7 | 1082 | } |
0f64bb02 | 1083 | |
157090f7 AM |
1084 | static reloc_howto_type * |
1085 | bfin_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1086 | const char *r_name) | |
1087 | { | |
1088 | unsigned int i; | |
1089 | ||
1090 | for (i = 0; | |
1091 | i < (sizeof (bfin_howto_table) | |
1092 | / sizeof (bfin_howto_table[0])); | |
1093 | i++) | |
1094 | if (bfin_howto_table[i].name != NULL | |
1095 | && strcasecmp (bfin_howto_table[i].name, r_name) == 0) | |
1096 | return &bfin_howto_table[i]; | |
1097 | ||
1098 | for (i = 0; | |
1099 | i < (sizeof (bfin_gnuext_howto_table) | |
1100 | / sizeof (bfin_gnuext_howto_table[0])); | |
1101 | i++) | |
1102 | if (bfin_gnuext_howto_table[i].name != NULL | |
1103 | && strcasecmp (bfin_gnuext_howto_table[i].name, r_name) == 0) | |
1104 | return &bfin_gnuext_howto_table[i]; | |
1105 | ||
1106 | return NULL; | |
0f64bb02 | 1107 | } |
157090f7 | 1108 | |
0f64bb02 CM |
1109 | /* Given a bfin relocation type, return the howto. */ |
1110 | static reloc_howto_type * | |
1111 | bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
1112 | unsigned int r_type) | |
1113 | { | |
1114 | if (r_type <= BFIN_RELOC_MAX) | |
1115 | return &bfin_howto_table [r_type]; | |
1116 | ||
0f64bb02 CM |
1117 | else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) |
1118 | return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; | |
1119 | ||
1120 | return (reloc_howto_type *) NULL; | |
0f64bb02 CM |
1121 | } |
1122 | ||
781303ce MF |
1123 | /* Set by ld emulation if --code-in-l1. */ |
1124 | bfd_boolean elf32_bfin_code_in_l1 = 0; | |
1125 | ||
1126 | /* Set by ld emulation if --data-in-l1. */ | |
1127 | bfd_boolean elf32_bfin_data_in_l1 = 0; | |
1128 | ||
1129 | static void | |
1130 | elf32_bfin_final_write_processing (bfd *abfd, | |
1131 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1132 | { | |
1133 | if (elf32_bfin_code_in_l1) | |
1134 | elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1; | |
1135 | if (elf32_bfin_data_in_l1) | |
1136 | elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1; | |
1137 | } | |
1138 | ||
0f64bb02 CM |
1139 | /* Return TRUE if the name is a local label. |
1140 | bfin local labels begin with L$. */ | |
1141 | static bfd_boolean | |
1142 | bfin_is_local_label_name ( | |
51408ec2 | 1143 | bfd *abfd, |
0f64bb02 CM |
1144 | const char *label) |
1145 | { | |
1146 | if (label[0] == 'L' && label[1] == '$' ) | |
1147 | return TRUE; | |
1148 | ||
1149 | return _bfd_elf_is_local_label_name (abfd, label); | |
1150 | } | |
c96a8570 BS |
1151 | \f |
1152 | /* Look through the relocs for a section during the first phase, and | |
1153 | allocate space in the global offset table or procedure linkage | |
1154 | table. */ | |
0f64bb02 | 1155 | |
c96a8570 BS |
1156 | static bfd_boolean |
1157 | bfin_check_relocs (bfd * abfd, | |
1158 | struct bfd_link_info *info, | |
1159 | asection *sec, | |
1160 | const Elf_Internal_Rela *relocs) | |
48d502e1 | 1161 | { |
c96a8570 BS |
1162 | bfd *dynobj; |
1163 | Elf_Internal_Shdr *symtab_hdr; | |
1164 | struct elf_link_hash_entry **sym_hashes; | |
1165 | bfd_signed_vma *local_got_refcounts; | |
1166 | const Elf_Internal_Rela *rel; | |
1167 | const Elf_Internal_Rela *rel_end; | |
48d502e1 | 1168 | asection *sgot; |
c96a8570 | 1169 | asection *srelgot; |
c96a8570 BS |
1170 | if (info->relocatable) |
1171 | return TRUE; | |
48d502e1 | 1172 | |
c96a8570 BS |
1173 | dynobj = elf_hash_table (info)->dynobj; |
1174 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1175 | sym_hashes = elf_sym_hashes (abfd); | |
1176 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
48d502e1 | 1177 | |
c96a8570 BS |
1178 | sgot = NULL; |
1179 | srelgot = NULL; | |
48d502e1 | 1180 | |
c96a8570 BS |
1181 | rel_end = relocs + sec->reloc_count; |
1182 | for (rel = relocs; rel < rel_end; rel++) | |
48d502e1 | 1183 | { |
c96a8570 BS |
1184 | unsigned long r_symndx; |
1185 | struct elf_link_hash_entry *h; | |
48d502e1 | 1186 | |
c96a8570 BS |
1187 | r_symndx = ELF32_R_SYM (rel->r_info); |
1188 | if (r_symndx < symtab_hdr->sh_info) | |
1189 | h = NULL; | |
1190 | else | |
1191 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
48d502e1 | 1192 | |
c96a8570 BS |
1193 | switch (ELF32_R_TYPE (rel->r_info)) |
1194 | { | |
1195 | /* This relocation describes the C++ object vtable hierarchy. | |
1196 | Reconstruct it for later use during GC. */ | |
1197 | case R_BFIN_GNU_VTINHERIT: | |
1198 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1199 | return FALSE; | |
1200 | break; | |
48d502e1 | 1201 | |
c96a8570 BS |
1202 | /* This relocation describes which C++ vtable entries |
1203 | are actually used. Record for later use during GC. */ | |
1204 | case R_BFIN_GNU_VTENTRY: | |
1205 | BFD_ASSERT (h != NULL); | |
1206 | if (h != NULL | |
1207 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1208 | return FALSE; | |
1209 | break; | |
48d502e1 | 1210 | |
cb88ce9f | 1211 | case R_BFIN_GOT: |
c96a8570 BS |
1212 | if (h != NULL |
1213 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1214 | break; | |
1215 | /* Fall through. */ | |
48d502e1 | 1216 | |
c96a8570 BS |
1217 | if (dynobj == NULL) |
1218 | { | |
1219 | /* Create the .got section. */ | |
1220 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
1221 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1222 | return FALSE; | |
1223 | } | |
48d502e1 | 1224 | |
c96a8570 BS |
1225 | if (sgot == NULL) |
1226 | { | |
3d4d4302 | 1227 | sgot = bfd_get_linker_section (dynobj, ".got"); |
c96a8570 BS |
1228 | BFD_ASSERT (sgot != NULL); |
1229 | } | |
48d502e1 | 1230 | |
c96a8570 BS |
1231 | if (srelgot == NULL && (h != NULL || info->shared)) |
1232 | { | |
3d4d4302 | 1233 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
c96a8570 BS |
1234 | if (srelgot == NULL) |
1235 | { | |
1236 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1237 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
1238 | | SEC_READONLY); | |
3d4d4302 AM |
1239 | srelgot = bfd_make_section_anyway_with_flags (dynobj, |
1240 | ".rela.got", | |
1241 | flags); | |
c96a8570 BS |
1242 | if (srelgot == NULL |
1243 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
1244 | return FALSE; | |
1245 | } | |
1246 | } | |
48d502e1 | 1247 | |
c96a8570 BS |
1248 | if (h != NULL) |
1249 | { | |
1250 | if (h->got.refcount == 0) | |
1251 | { | |
1252 | /* Make sure this symbol is output as a dynamic symbol. */ | |
1253 | if (h->dynindx == -1 && !h->forced_local) | |
1254 | { | |
1255 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
1256 | return FALSE; | |
1257 | } | |
48d502e1 | 1258 | |
c96a8570 BS |
1259 | /* Allocate space in the .got section. */ |
1260 | sgot->size += 4; | |
1261 | /* Allocate relocation space. */ | |
1262 | srelgot->size += sizeof (Elf32_External_Rela); | |
1263 | } | |
1264 | h->got.refcount++; | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | /* This is a global offset table entry for a local symbol. */ | |
1269 | if (local_got_refcounts == NULL) | |
1270 | { | |
1271 | bfd_size_type size; | |
48d502e1 | 1272 | |
c96a8570 BS |
1273 | size = symtab_hdr->sh_info; |
1274 | size *= sizeof (bfd_signed_vma); | |
1275 | local_got_refcounts = ((bfd_signed_vma *) | |
1276 | bfd_zalloc (abfd, size)); | |
1277 | if (local_got_refcounts == NULL) | |
1278 | return FALSE; | |
1279 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1280 | } | |
1281 | if (local_got_refcounts[r_symndx] == 0) | |
1282 | { | |
1283 | sgot->size += 4; | |
1284 | if (info->shared) | |
1285 | { | |
1286 | /* If we are generating a shared object, we need to | |
1287 | output a R_68K_RELATIVE reloc so that the dynamic | |
1288 | linker can adjust this GOT entry. */ | |
1289 | srelgot->size += sizeof (Elf32_External_Rela); | |
1290 | } | |
1291 | } | |
1292 | local_got_refcounts[r_symndx]++; | |
1293 | } | |
1294 | break; | |
48d502e1 | 1295 | |
c96a8570 BS |
1296 | default: |
1297 | break; | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | return TRUE; | |
48d502e1 BS |
1302 | } |
1303 | ||
c96a8570 BS |
1304 | static enum elf_reloc_type_class |
1305 | elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela) | |
48d502e1 | 1306 | { |
c96a8570 BS |
1307 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
1308 | { | |
1309 | default: | |
1310 | return reloc_class_normal; | |
1311 | } | |
1312 | } | |
1313 | \f | |
1314 | static bfd_reloc_status_type | |
1315 | bfin_final_link_relocate (Elf_Internal_Rela *rel, reloc_howto_type *howto, | |
1316 | bfd *input_bfd, asection *input_section, | |
1317 | bfd_byte *contents, bfd_vma address, | |
1318 | bfd_vma value, bfd_vma addend) | |
1319 | { | |
1320 | int r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 1321 | |
cb88ce9f | 1322 | if (r_type == R_BFIN_PCREL24 || r_type == R_BFIN_PCREL24_JUMP_L) |
c96a8570 BS |
1323 | { |
1324 | bfd_reloc_status_type r = bfd_reloc_ok; | |
1325 | bfd_vma x; | |
48d502e1 | 1326 | |
c96a8570 BS |
1327 | if (address > bfd_get_section_limit (input_bfd, input_section)) |
1328 | return bfd_reloc_outofrange; | |
48d502e1 | 1329 | |
c96a8570 | 1330 | value += addend; |
48d502e1 | 1331 | |
c96a8570 BS |
1332 | /* Perform usual pc-relative correction. */ |
1333 | value -= input_section->output_section->vma + input_section->output_offset; | |
1334 | value -= address; | |
48d502e1 | 1335 | |
c96a8570 BS |
1336 | /* We are getting reloc_entry->address 2 byte off from |
1337 | the start of instruction. Assuming absolute postion | |
1338 | of the reloc data. But, following code had been written assuming | |
1339 | reloc address is starting at begining of instruction. | |
1340 | To compensate that I have increased the value of | |
1341 | relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ | |
48d502e1 | 1342 | |
c96a8570 BS |
1343 | value += 2; |
1344 | address -= 2; | |
48d502e1 | 1345 | |
c96a8570 BS |
1346 | if ((value & 0xFF000000) != 0 |
1347 | && (value & 0xFF000000) != 0xFF000000) | |
1348 | r = bfd_reloc_overflow; | |
48d502e1 | 1349 | |
c96a8570 | 1350 | value >>= 1; |
48d502e1 | 1351 | |
c96a8570 BS |
1352 | x = bfd_get_16 (input_bfd, contents + address); |
1353 | x = (x & 0xff00) | ((value >> 16) & 0xff); | |
1354 | bfd_put_16 (input_bfd, x, contents + address); | |
48d502e1 | 1355 | |
c96a8570 BS |
1356 | x = bfd_get_16 (input_bfd, contents + address + 2); |
1357 | x = value & 0xFFFF; | |
1358 | bfd_put_16 (input_bfd, x, contents + address + 2); | |
1359 | return r; | |
1360 | } | |
48d502e1 | 1361 | |
c96a8570 BS |
1362 | return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, |
1363 | rel->r_offset, value, addend); | |
48d502e1 | 1364 | |
48d502e1 BS |
1365 | } |
1366 | ||
c96a8570 BS |
1367 | static bfd_boolean |
1368 | bfin_relocate_section (bfd * output_bfd, | |
1369 | struct bfd_link_info *info, | |
1370 | bfd * input_bfd, | |
1371 | asection * input_section, | |
1372 | bfd_byte * contents, | |
1373 | Elf_Internal_Rela * relocs, | |
1374 | Elf_Internal_Sym * local_syms, | |
1375 | asection ** local_sections) | |
48d502e1 | 1376 | { |
c96a8570 BS |
1377 | bfd *dynobj; |
1378 | Elf_Internal_Shdr *symtab_hdr; | |
1379 | struct elf_link_hash_entry **sym_hashes; | |
1380 | bfd_vma *local_got_offsets; | |
1381 | asection *sgot; | |
c96a8570 BS |
1382 | Elf_Internal_Rela *rel; |
1383 | Elf_Internal_Rela *relend; | |
1384 | int i = 0; | |
48d502e1 | 1385 | |
c96a8570 BS |
1386 | dynobj = elf_hash_table (info)->dynobj; |
1387 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1388 | sym_hashes = elf_sym_hashes (input_bfd); | |
1389 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
48d502e1 | 1390 | |
c96a8570 | 1391 | sgot = NULL; |
48d502e1 | 1392 | |
c96a8570 BS |
1393 | rel = relocs; |
1394 | relend = relocs + input_section->reloc_count; | |
1395 | for (; rel < relend; rel++, i++) | |
1396 | { | |
1397 | int r_type; | |
1398 | reloc_howto_type *howto; | |
1399 | unsigned long r_symndx; | |
1400 | struct elf_link_hash_entry *h; | |
1401 | Elf_Internal_Sym *sym; | |
1402 | asection *sec; | |
1403 | bfd_vma relocation = 0; | |
1404 | bfd_boolean unresolved_reloc; | |
1405 | bfd_reloc_status_type r; | |
1406 | bfd_vma address; | |
48d502e1 | 1407 | |
c96a8570 BS |
1408 | r_type = ELF32_R_TYPE (rel->r_info); |
1409 | if (r_type < 0 || r_type >= 243) | |
1410 | { | |
1411 | bfd_set_error (bfd_error_bad_value); | |
1412 | return FALSE; | |
1413 | } | |
48d502e1 | 1414 | |
c96a8570 BS |
1415 | if (r_type == R_BFIN_GNU_VTENTRY |
1416 | || r_type == R_BFIN_GNU_VTINHERIT) | |
1417 | continue; | |
48d502e1 | 1418 | |
c96a8570 BS |
1419 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
1420 | if (howto == NULL) | |
1421 | { | |
1422 | bfd_set_error (bfd_error_bad_value); | |
1423 | return FALSE; | |
1424 | } | |
1425 | r_symndx = ELF32_R_SYM (rel->r_info); | |
48d502e1 | 1426 | |
c96a8570 BS |
1427 | h = NULL; |
1428 | sym = NULL; | |
1429 | sec = NULL; | |
1430 | unresolved_reloc = FALSE; | |
48d502e1 | 1431 | |
c96a8570 BS |
1432 | if (r_symndx < symtab_hdr->sh_info) |
1433 | { | |
1434 | sym = local_syms + r_symndx; | |
1435 | sec = local_sections[r_symndx]; | |
1436 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
1437 | } | |
1438 | else | |
1439 | { | |
1440 | bfd_boolean warned; | |
48d502e1 | 1441 | |
c96a8570 BS |
1442 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1443 | r_symndx, symtab_hdr, sym_hashes, | |
1444 | h, sec, relocation, | |
1445 | unresolved_reloc, warned); | |
1446 | } | |
48d502e1 | 1447 | |
dbaa2011 | 1448 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 1449 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 1450 | rel, 1, relend, howto, 0, contents); |
48d502e1 | 1451 | |
c96a8570 BS |
1452 | if (info->relocatable) |
1453 | continue; | |
48d502e1 | 1454 | |
c96a8570 | 1455 | address = rel->r_offset; |
48d502e1 | 1456 | |
c96a8570 BS |
1457 | /* Then, process normally. */ |
1458 | switch (r_type) | |
1459 | { | |
1460 | case R_BFIN_GNU_VTINHERIT: | |
1461 | case R_BFIN_GNU_VTENTRY: | |
1462 | return bfd_reloc_ok; | |
48d502e1 | 1463 | |
cb88ce9f | 1464 | case R_BFIN_GOT: |
c96a8570 BS |
1465 | /* Relocation is to the address of the entry for this symbol |
1466 | in the global offset table. */ | |
1467 | if (h != NULL | |
1468 | && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0) | |
1469 | goto do_default; | |
1470 | /* Fall through. */ | |
1471 | /* Relocation is the offset of the entry for this symbol in | |
1472 | the global offset table. */ | |
48d502e1 | 1473 | |
c96a8570 BS |
1474 | { |
1475 | bfd_vma off; | |
48d502e1 | 1476 | |
c96a8570 BS |
1477 | if (dynobj == NULL) |
1478 | { | |
1479 | /* Create the .got section. */ | |
1480 | elf_hash_table (info)->dynobj = dynobj = output_bfd; | |
1481 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
1482 | return FALSE; | |
1483 | } | |
48d502e1 | 1484 | |
c96a8570 BS |
1485 | if (sgot == NULL) |
1486 | { | |
3d4d4302 | 1487 | sgot = bfd_get_linker_section (dynobj, ".got"); |
c96a8570 BS |
1488 | BFD_ASSERT (sgot != NULL); |
1489 | } | |
48d502e1 | 1490 | |
c96a8570 BS |
1491 | if (h != NULL) |
1492 | { | |
1493 | bfd_boolean dyn; | |
48d502e1 | 1494 | |
c96a8570 BS |
1495 | off = h->got.offset; |
1496 | BFD_ASSERT (off != (bfd_vma) - 1); | |
1497 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
48d502e1 | 1498 | |
c96a8570 BS |
1499 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
1500 | || (info->shared | |
1501 | && (info->symbolic | |
1502 | || h->dynindx == -1 | |
1503 | || h->forced_local) | |
1504 | && h->def_regular)) | |
1505 | { | |
1506 | /* This is actually a static link, or it is a | |
1507 | -Bsymbolic link and the symbol is defined | |
1508 | locally, or the symbol was forced to be local | |
1509 | because of a version file.. We must initialize | |
1510 | this entry in the global offset table. Since | |
1511 | the offset must always be a multiple of 4, we | |
1512 | use the least significant bit to record whether | |
1513 | we have initialized it already. | |
48d502e1 | 1514 | |
c96a8570 BS |
1515 | When doing a dynamic link, we create a .rela.got |
1516 | relocation entry to initialize the value. This | |
1517 | is done in the finish_dynamic_symbol routine. */ | |
1518 | if ((off & 1) != 0) | |
1519 | off &= ~1; | |
1520 | else | |
1521 | { | |
1522 | bfd_put_32 (output_bfd, relocation, | |
1523 | sgot->contents + off); | |
1524 | h->got.offset |= 1; | |
1525 | } | |
1526 | } | |
1527 | else | |
1528 | unresolved_reloc = FALSE; | |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | BFD_ASSERT (local_got_offsets != NULL); | |
1533 | off = local_got_offsets[r_symndx]; | |
1534 | BFD_ASSERT (off != (bfd_vma) - 1); | |
48d502e1 | 1535 | |
c96a8570 BS |
1536 | /* The offset must always be a multiple of 4. We use |
1537 | the least significant bit to record whether we have | |
1538 | already generated the necessary reloc. */ | |
1539 | if ((off & 1) != 0) | |
1540 | off &= ~1; | |
1541 | else | |
1542 | { | |
1543 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
48d502e1 | 1544 | |
c96a8570 BS |
1545 | if (info->shared) |
1546 | { | |
1547 | asection *s; | |
1548 | Elf_Internal_Rela outrel; | |
1549 | bfd_byte *loc; | |
48d502e1 | 1550 | |
3d4d4302 | 1551 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
c96a8570 | 1552 | BFD_ASSERT (s != NULL); |
48d502e1 | 1553 | |
c96a8570 BS |
1554 | outrel.r_offset = (sgot->output_section->vma |
1555 | + sgot->output_offset + off); | |
1556 | outrel.r_info = | |
cb88ce9f | 1557 | ELF32_R_INFO (0, R_BFIN_PCREL24); |
c96a8570 BS |
1558 | outrel.r_addend = relocation; |
1559 | loc = s->contents; | |
1560 | loc += | |
1561 | s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1562 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1563 | } | |
48d502e1 | 1564 | |
c96a8570 BS |
1565 | local_got_offsets[r_symndx] |= 1; |
1566 | } | |
1567 | } | |
48d502e1 | 1568 | |
c96a8570 BS |
1569 | relocation = sgot->output_offset + off; |
1570 | rel->r_addend = 0; | |
1571 | /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ | |
1572 | relocation /= 4; | |
1573 | } | |
1574 | goto do_default; | |
1575 | ||
1576 | default: | |
1577 | do_default: | |
1578 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, | |
1579 | contents, address, | |
1580 | relocation, rel->r_addend); | |
1581 | ||
1582 | break; | |
48d502e1 BS |
1583 | } |
1584 | ||
c96a8570 BS |
1585 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
1586 | because such sections are not SEC_ALLOC and thus ld.so will | |
1587 | not process them. */ | |
1588 | if (unresolved_reloc | |
1d5316ab AM |
1589 | && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic) |
1590 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
1591 | rel->r_offset) != (bfd_vma) -1) | |
48d502e1 | 1592 | { |
c96a8570 BS |
1593 | (*_bfd_error_handler) |
1594 | (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), | |
1595 | input_bfd, | |
1596 | input_section, (long) rel->r_offset, h->root.root.string); | |
1597 | return FALSE; | |
48d502e1 | 1598 | } |
48d502e1 | 1599 | |
c96a8570 | 1600 | if (r != bfd_reloc_ok) |
48d502e1 | 1601 | { |
c96a8570 BS |
1602 | const char *name; |
1603 | ||
1604 | if (h != NULL) | |
1605 | name = h->root.root.string; | |
1606 | else | |
48d502e1 | 1607 | { |
c96a8570 BS |
1608 | name = bfd_elf_string_from_elf_section (input_bfd, |
1609 | symtab_hdr->sh_link, | |
1610 | sym->st_name); | |
1611 | if (name == NULL) | |
1612 | return FALSE; | |
1613 | if (*name == '\0') | |
1614 | name = bfd_section_name (input_bfd, sec); | |
48d502e1 | 1615 | } |
c96a8570 BS |
1616 | |
1617 | if (r == bfd_reloc_overflow) | |
48d502e1 | 1618 | { |
c96a8570 BS |
1619 | if (!(info->callbacks->reloc_overflow |
1620 | (info, (h ? &h->root : NULL), name, howto->name, | |
1621 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) | |
48d502e1 BS |
1622 | return FALSE; |
1623 | } | |
1624 | else | |
1625 | { | |
c96a8570 BS |
1626 | (*_bfd_error_handler) |
1627 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), | |
1628 | input_bfd, input_section, | |
1629 | (long) rel->r_offset, name, (int) r); | |
1630 | return FALSE; | |
48d502e1 | 1631 | } |
48d502e1 | 1632 | } |
48d502e1 BS |
1633 | } |
1634 | ||
c96a8570 BS |
1635 | return TRUE; |
1636 | } | |
48d502e1 | 1637 | |
c96a8570 BS |
1638 | static asection * |
1639 | bfin_gc_mark_hook (asection * sec, | |
1640 | struct bfd_link_info *info, | |
1641 | Elf_Internal_Rela * rel, | |
1642 | struct elf_link_hash_entry *h, | |
1643 | Elf_Internal_Sym * sym) | |
1644 | { | |
1645 | if (h != NULL) | |
1646 | switch (ELF32_R_TYPE (rel->r_info)) | |
1647 | { | |
1648 | case R_BFIN_GNU_VTINHERIT: | |
1649 | case R_BFIN_GNU_VTENTRY: | |
1650 | return NULL; | |
1651 | } | |
48d502e1 | 1652 | |
c96a8570 BS |
1653 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
1654 | } | |
48d502e1 | 1655 | |
c96a8570 | 1656 | /* Update the got entry reference counts for the section being removed. */ |
48d502e1 | 1657 | |
c96a8570 BS |
1658 | static bfd_boolean |
1659 | bfin_gc_sweep_hook (bfd * abfd, | |
1660 | struct bfd_link_info *info, | |
1661 | asection * sec, | |
1662 | const Elf_Internal_Rela * relocs) | |
1663 | { | |
1664 | Elf_Internal_Shdr *symtab_hdr; | |
1665 | struct elf_link_hash_entry **sym_hashes; | |
1666 | bfd_signed_vma *local_got_refcounts; | |
1667 | const Elf_Internal_Rela *rel, *relend; | |
1668 | bfd *dynobj; | |
1669 | asection *sgot; | |
1670 | asection *srelgot; | |
48d502e1 | 1671 | |
c96a8570 BS |
1672 | dynobj = elf_hash_table (info)->dynobj; |
1673 | if (dynobj == NULL) | |
0f64bb02 CM |
1674 | return TRUE; |
1675 | ||
0f64bb02 CM |
1676 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1677 | sym_hashes = elf_sym_hashes (abfd); | |
1678 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1679 | ||
3d4d4302 AM |
1680 | sgot = bfd_get_linker_section (dynobj, ".got"); |
1681 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
0f64bb02 | 1682 | |
c96a8570 BS |
1683 | relend = relocs + sec->reloc_count; |
1684 | for (rel = relocs; rel < relend; rel++) | |
0f64bb02 CM |
1685 | { |
1686 | unsigned long r_symndx; | |
1687 | struct elf_link_hash_entry *h; | |
1688 | ||
0f64bb02 CM |
1689 | switch (ELF32_R_TYPE (rel->r_info)) |
1690 | { | |
cb88ce9f | 1691 | case R_BFIN_GOT: |
c96a8570 BS |
1692 | r_symndx = ELF32_R_SYM (rel->r_info); |
1693 | if (r_symndx >= symtab_hdr->sh_info) | |
0f64bb02 | 1694 | { |
c96a8570 BS |
1695 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1696 | if (h->got.refcount > 0) | |
0f64bb02 | 1697 | { |
c96a8570 BS |
1698 | --h->got.refcount; |
1699 | if (h->got.refcount == 0) | |
0f64bb02 | 1700 | { |
c96a8570 BS |
1701 | /* We don't need the .got entry any more. */ |
1702 | sgot->size -= 4; | |
1703 | srelgot->size -= sizeof (Elf32_External_Rela); | |
0f64bb02 | 1704 | } |
0f64bb02 | 1705 | } |
0f64bb02 | 1706 | } |
c96a8570 | 1707 | else if (local_got_refcounts != NULL) |
0f64bb02 | 1708 | { |
c96a8570 | 1709 | if (local_got_refcounts[r_symndx] > 0) |
0f64bb02 | 1710 | { |
c96a8570 BS |
1711 | --local_got_refcounts[r_symndx]; |
1712 | if (local_got_refcounts[r_symndx] == 0) | |
0f64bb02 | 1713 | { |
c96a8570 BS |
1714 | /* We don't need the .got entry any more. */ |
1715 | sgot->size -= 4; | |
1716 | if (info->shared) | |
1717 | srelgot->size -= sizeof (Elf32_External_Rela); | |
0f64bb02 CM |
1718 | } |
1719 | } | |
0f64bb02 CM |
1720 | } |
1721 | break; | |
0f64bb02 CM |
1722 | default: |
1723 | break; | |
1724 | } | |
1725 | } | |
0f64bb02 CM |
1726 | return TRUE; |
1727 | } | |
c96a8570 BS |
1728 | \f |
1729 | extern const bfd_target bfd_elf32_bfinfdpic_vec; | |
1730 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec) | |
0f64bb02 | 1731 | |
4dfe6ac6 NC |
1732 | /* An extension of the elf hash table data structure, |
1733 | containing some additional Blackfin-specific data. */ | |
c96a8570 | 1734 | struct bfinfdpic_elf_link_hash_table |
c35e54f4 | 1735 | { |
c96a8570 | 1736 | struct elf_link_hash_table elf; |
c35e54f4 | 1737 | |
c96a8570 BS |
1738 | /* A pointer to the .got section. */ |
1739 | asection *sgot; | |
1740 | /* A pointer to the .rel.got section. */ | |
1741 | asection *sgotrel; | |
1742 | /* A pointer to the .rofixup section. */ | |
1743 | asection *sgotfixup; | |
1744 | /* A pointer to the .plt section. */ | |
1745 | asection *splt; | |
1746 | /* A pointer to the .rel.plt section. */ | |
1747 | asection *spltrel; | |
1748 | /* GOT base offset. */ | |
1749 | bfd_vma got0; | |
1750 | /* Location of the first non-lazy PLT entry, i.e., the number of | |
1751 | bytes taken by lazy PLT entries. */ | |
1752 | bfd_vma plt0; | |
1753 | /* A hash table holding information about which symbols were | |
1754 | referenced with which PIC-related relocations. */ | |
1755 | struct htab *relocs_info; | |
6a9adeca BS |
1756 | /* Summary reloc information collected by |
1757 | _bfinfdpic_count_got_plt_entries. */ | |
1758 | struct _bfinfdpic_dynamic_got_info *g; | |
c96a8570 | 1759 | }; |
c35e54f4 | 1760 | |
c96a8570 | 1761 | /* Get the Blackfin ELF linker hash table from a link_info structure. */ |
c35e54f4 | 1762 | |
c96a8570 | 1763 | #define bfinfdpic_hash_table(info) \ |
4dfe6ac6 NC |
1764 | (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \ |
1765 | == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL) | |
c35e54f4 | 1766 | |
c96a8570 BS |
1767 | #define bfinfdpic_got_section(info) \ |
1768 | (bfinfdpic_hash_table (info)->sgot) | |
1769 | #define bfinfdpic_gotrel_section(info) \ | |
1770 | (bfinfdpic_hash_table (info)->sgotrel) | |
1771 | #define bfinfdpic_gotfixup_section(info) \ | |
1772 | (bfinfdpic_hash_table (info)->sgotfixup) | |
1773 | #define bfinfdpic_plt_section(info) \ | |
1774 | (bfinfdpic_hash_table (info)->splt) | |
1775 | #define bfinfdpic_pltrel_section(info) \ | |
1776 | (bfinfdpic_hash_table (info)->spltrel) | |
1777 | #define bfinfdpic_relocs_info(info) \ | |
1778 | (bfinfdpic_hash_table (info)->relocs_info) | |
1779 | #define bfinfdpic_got_initial_offset(info) \ | |
1780 | (bfinfdpic_hash_table (info)->got0) | |
1781 | #define bfinfdpic_plt_initial_offset(info) \ | |
1782 | (bfinfdpic_hash_table (info)->plt0) | |
6a9adeca BS |
1783 | #define bfinfdpic_dynamic_got_plt_info(info) \ |
1784 | (bfinfdpic_hash_table (info)->g) | |
c35e54f4 | 1785 | |
c96a8570 BS |
1786 | /* The name of the dynamic interpreter. This is put in the .interp |
1787 | section. */ | |
c35e54f4 | 1788 | |
c96a8570 | 1789 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
c35e54f4 | 1790 | |
c96a8570 | 1791 | #define DEFAULT_STACK_SIZE 0x20000 |
c35e54f4 | 1792 | |
c96a8570 BS |
1793 | /* This structure is used to collect the number of entries present in |
1794 | each addressable range of the got. */ | |
1795 | struct _bfinfdpic_dynamic_got_info | |
1796 | { | |
1797 | /* Several bits of information about the current link. */ | |
1798 | struct bfd_link_info *info; | |
1799 | /* Total size needed for GOT entries within the 18- or 32-bit | |
1800 | ranges. */ | |
1801 | bfd_vma got17m4, gothilo; | |
1802 | /* Total size needed for function descriptor entries within the 18- | |
1803 | or 32-bit ranges. */ | |
1804 | bfd_vma fd17m4, fdhilo; | |
1805 | /* Total size needed function descriptor entries referenced in PLT | |
1806 | entries, that would be profitable to place in offsets close to | |
1807 | the PIC register. */ | |
1808 | bfd_vma fdplt; | |
1809 | /* Total size needed by lazy PLT entries. */ | |
1810 | bfd_vma lzplt; | |
1811 | /* Number of relocations carried over from input object files. */ | |
1812 | unsigned long relocs; | |
1813 | /* Number of fixups introduced by relocations in input object files. */ | |
1814 | unsigned long fixups; | |
1815 | }; | |
c35e54f4 | 1816 | |
c96a8570 | 1817 | /* Create a Blackfin ELF linker hash table. */ |
c35e54f4 | 1818 | |
c96a8570 BS |
1819 | static struct bfd_link_hash_table * |
1820 | bfinfdpic_elf_link_hash_table_create (bfd *abfd) | |
1821 | { | |
1822 | struct bfinfdpic_elf_link_hash_table *ret; | |
1823 | bfd_size_type amt = sizeof (struct bfinfdpic_elf_link_hash_table); | |
c35e54f4 | 1824 | |
c96a8570 BS |
1825 | ret = bfd_zalloc (abfd, amt); |
1826 | if (ret == NULL) | |
1827 | return NULL; | |
c35e54f4 | 1828 | |
c96a8570 BS |
1829 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
1830 | _bfd_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
1831 | sizeof (struct elf_link_hash_entry), |
1832 | BFIN_ELF_DATA)) | |
c96a8570 BS |
1833 | { |
1834 | free (ret); | |
1835 | return NULL; | |
1836 | } | |
c35e54f4 | 1837 | |
c96a8570 BS |
1838 | return &ret->elf.root; |
1839 | } | |
48d502e1 | 1840 | |
c96a8570 BS |
1841 | /* Decide whether a reference to a symbol can be resolved locally or |
1842 | not. If the symbol is protected, we want the local address, but | |
1843 | its function descriptor must be assigned by the dynamic linker. */ | |
1844 | #define BFINFDPIC_SYM_LOCAL(INFO, H) \ | |
1845 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ | |
1846 | || ! elf_hash_table (INFO)->dynamic_sections_created) | |
1847 | #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \ | |
1848 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) | |
48d502e1 | 1849 | |
c96a8570 BS |
1850 | /* This structure collects information on what kind of GOT, PLT or |
1851 | function descriptors are required by relocations that reference a | |
1852 | certain symbol. */ | |
1853 | struct bfinfdpic_relocs_info | |
1854 | { | |
1855 | /* The index of the symbol, as stored in the relocation r_info, if | |
1856 | we have a local symbol; -1 otherwise. */ | |
1857 | long symndx; | |
1858 | union | |
1859 | { | |
1860 | /* The input bfd in which the symbol is defined, if it's a local | |
1861 | symbol. */ | |
1862 | bfd *abfd; | |
1863 | /* If symndx == -1, the hash table entry corresponding to a global | |
1864 | symbol (even if it turns out to bind locally, in which case it | |
1865 | should ideally be replaced with section's symndx + addend). */ | |
1866 | struct elf_link_hash_entry *h; | |
1867 | } d; | |
1868 | /* The addend of the relocation that references the symbol. */ | |
1869 | bfd_vma addend; | |
48d502e1 | 1870 | |
c96a8570 BS |
1871 | /* The fields above are used to identify an entry. The fields below |
1872 | contain information on how an entry is used and, later on, which | |
1873 | locations it was assigned. */ | |
1874 | /* The following 2 fields record whether the symbol+addend above was | |
1875 | ever referenced with a GOT relocation. The 17M4 suffix indicates a | |
1876 | GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */ | |
1877 | unsigned got17m4; | |
1878 | unsigned gothilo; | |
1879 | /* Whether a FUNCDESC relocation references symbol+addend. */ | |
1880 | unsigned fd; | |
1881 | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ | |
1882 | unsigned fdgot17m4; | |
1883 | unsigned fdgothilo; | |
1884 | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ | |
1885 | unsigned fdgoff17m4; | |
1886 | unsigned fdgoffhilo; | |
1887 | /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or | |
1888 | GOTOFFHI relocations. The addend doesn't really matter, since we | |
1889 | envision that this will only be used to check whether the symbol | |
1890 | is mapped to the same segment as the got. */ | |
1891 | unsigned gotoff; | |
1892 | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ | |
1893 | unsigned call; | |
1894 | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE | |
1895 | relocation. */ | |
1896 | unsigned sym; | |
1897 | /* Whether we need a PLT entry for a symbol. Should be implied by | |
1898 | something like: | |
1899 | (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */ | |
1900 | unsigned plt:1; | |
1901 | /* Whether a function descriptor should be created in this link unit | |
1902 | for symbol+addend. Should be implied by something like: | |
1903 | (plt || fdgotoff17m4 || fdgotofflohi | |
1904 | || ((fd || fdgot17m4 || fdgothilo) | |
1905 | && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ | |
1906 | unsigned privfd:1; | |
1907 | /* Whether a lazy PLT entry is needed for this symbol+addend. | |
1908 | Should be implied by something like: | |
1909 | (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h) | |
1910 | && ! (info->flags & DF_BIND_NOW)) */ | |
1911 | unsigned lazyplt:1; | |
1912 | /* Whether we've already emitted GOT relocations and PLT entries as | |
1913 | needed for this symbol. */ | |
1914 | unsigned done:1; | |
48d502e1 | 1915 | |
cb88ce9f | 1916 | /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE |
c96a8570 BS |
1917 | relocations referencing the symbol. */ |
1918 | unsigned relocs32, relocsfd, relocsfdv; | |
48d502e1 | 1919 | |
c96a8570 BS |
1920 | /* The number of .rofixups entries and dynamic relocations allocated |
1921 | for this symbol, minus any that might have already been used. */ | |
1922 | unsigned fixups, dynrelocs; | |
48d502e1 | 1923 | |
c96a8570 BS |
1924 | /* The offsets of the GOT entries assigned to symbol+addend, to the |
1925 | function descriptor's address, and to a function descriptor, | |
1926 | respectively. Should be zero if unassigned. The offsets are | |
1927 | counted from the value that will be assigned to the PIC register, | |
1928 | not from the beginning of the .got section. */ | |
1929 | bfd_signed_vma got_entry, fdgot_entry, fd_entry; | |
1930 | /* The offsets of the PLT entries assigned to symbol+addend, | |
1931 | non-lazy and lazy, respectively. If unassigned, should be | |
1932 | (bfd_vma)-1. */ | |
1933 | bfd_vma plt_entry, lzplt_entry; | |
1934 | }; | |
48d502e1 | 1935 | |
c96a8570 BS |
1936 | /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */ |
1937 | static hashval_t | |
1938 | bfinfdpic_relocs_info_hash (const void *entry_) | |
1939 | { | |
1940 | const struct bfinfdpic_relocs_info *entry = entry_; | |
48d502e1 | 1941 | |
c96a8570 BS |
1942 | return (entry->symndx == -1 |
1943 | ? (long) entry->d.h->root.root.hash | |
1944 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; | |
1945 | } | |
f4707595 | 1946 | |
c96a8570 BS |
1947 | /* Test whether the key fields of two bfinfdpic_relocs_info entries are |
1948 | identical. */ | |
1949 | static int | |
1950 | bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2) | |
0f64bb02 | 1951 | { |
c96a8570 BS |
1952 | const struct bfinfdpic_relocs_info *e1 = entry1; |
1953 | const struct bfinfdpic_relocs_info *e2 = entry2; | |
0f64bb02 | 1954 | |
c96a8570 BS |
1955 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
1956 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); | |
1957 | } | |
48d502e1 | 1958 | |
c96a8570 BS |
1959 | /* Find or create an entry in a hash table HT that matches the key |
1960 | fields of the given ENTRY. If it's not found, memory for a new | |
1961 | entry is allocated in ABFD's obstack. */ | |
1962 | static struct bfinfdpic_relocs_info * | |
1963 | bfinfdpic_relocs_info_find (struct htab *ht, | |
1964 | bfd *abfd, | |
1965 | const struct bfinfdpic_relocs_info *entry, | |
1966 | enum insert_option insert) | |
1967 | { | |
83fd9437 JZ |
1968 | struct bfinfdpic_relocs_info **loc; |
1969 | ||
1970 | if (!ht) | |
1971 | return NULL; | |
1972 | ||
1973 | loc = (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert); | |
0f64bb02 | 1974 | |
c96a8570 BS |
1975 | if (! loc) |
1976 | return NULL; | |
0f64bb02 | 1977 | |
c96a8570 BS |
1978 | if (*loc) |
1979 | return *loc; | |
0f64bb02 | 1980 | |
c96a8570 | 1981 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
0f64bb02 | 1982 | |
c96a8570 BS |
1983 | if (! *loc) |
1984 | return *loc; | |
0f64bb02 | 1985 | |
c96a8570 BS |
1986 | (*loc)->symndx = entry->symndx; |
1987 | (*loc)->d = entry->d; | |
1988 | (*loc)->addend = entry->addend; | |
1989 | (*loc)->plt_entry = (bfd_vma)-1; | |
1990 | (*loc)->lzplt_entry = (bfd_vma)-1; | |
0f64bb02 | 1991 | |
c96a8570 BS |
1992 | return *loc; |
1993 | } | |
48d502e1 | 1994 | |
c96a8570 BS |
1995 | /* Obtain the address of the entry in HT associated with H's symbol + |
1996 | addend, creating a new entry if none existed. ABFD is only used | |
1997 | for memory allocation purposes. */ | |
1998 | inline static struct bfinfdpic_relocs_info * | |
1999 | bfinfdpic_relocs_info_for_global (struct htab *ht, | |
2000 | bfd *abfd, | |
2001 | struct elf_link_hash_entry *h, | |
2002 | bfd_vma addend, | |
2003 | enum insert_option insert) | |
2004 | { | |
2005 | struct bfinfdpic_relocs_info entry; | |
0f64bb02 | 2006 | |
c96a8570 BS |
2007 | entry.symndx = -1; |
2008 | entry.d.h = h; | |
2009 | entry.addend = addend; | |
f4707595 | 2010 | |
c96a8570 BS |
2011 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
2012 | } | |
48d502e1 | 2013 | |
c96a8570 BS |
2014 | /* Obtain the address of the entry in HT associated with the SYMNDXth |
2015 | local symbol of the input bfd ABFD, plus the addend, creating a new | |
2016 | entry if none existed. */ | |
2017 | inline static struct bfinfdpic_relocs_info * | |
2018 | bfinfdpic_relocs_info_for_local (struct htab *ht, | |
2019 | bfd *abfd, | |
2020 | long symndx, | |
2021 | bfd_vma addend, | |
2022 | enum insert_option insert) | |
2023 | { | |
2024 | struct bfinfdpic_relocs_info entry; | |
ab96bf03 | 2025 | |
c96a8570 BS |
2026 | entry.symndx = symndx; |
2027 | entry.d.abfd = abfd; | |
2028 | entry.addend = addend; | |
48d502e1 | 2029 | |
c96a8570 BS |
2030 | return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert); |
2031 | } | |
48d502e1 | 2032 | |
c96a8570 BS |
2033 | /* Merge fields set by check_relocs() of two entries that end up being |
2034 | mapped to the same (presumably global) symbol. */ | |
0f64bb02 | 2035 | |
c96a8570 BS |
2036 | inline static void |
2037 | bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2, | |
2038 | struct bfinfdpic_relocs_info const *e1) | |
2039 | { | |
2040 | e2->got17m4 |= e1->got17m4; | |
2041 | e2->gothilo |= e1->gothilo; | |
2042 | e2->fd |= e1->fd; | |
2043 | e2->fdgot17m4 |= e1->fdgot17m4; | |
2044 | e2->fdgothilo |= e1->fdgothilo; | |
2045 | e2->fdgoff17m4 |= e1->fdgoff17m4; | |
2046 | e2->fdgoffhilo |= e1->fdgoffhilo; | |
2047 | e2->gotoff |= e1->gotoff; | |
2048 | e2->call |= e1->call; | |
2049 | e2->sym |= e1->sym; | |
2050 | } | |
48d502e1 | 2051 | |
c96a8570 BS |
2052 | /* Every block of 65535 lazy PLT entries shares a single call to the |
2053 | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # | |
2054 | 32767, counting from 0). All other lazy PLT entries branch to it | |
2055 | in a single instruction. */ | |
48d502e1 | 2056 | |
c96a8570 BS |
2057 | #define LZPLT_RESOLVER_EXTRA 10 |
2058 | #define LZPLT_NORMAL_SIZE 6 | |
2059 | #define LZPLT_ENTRIES 1362 | |
48d502e1 | 2060 | |
c96a8570 BS |
2061 | #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA) |
2062 | #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2) | |
48d502e1 | 2063 | |
c96a8570 | 2064 | /* Add a dynamic relocation to the SRELOC section. */ |
48d502e1 | 2065 | |
c96a8570 BS |
2066 | inline static bfd_vma |
2067 | _bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, | |
2068 | int reloc_type, long dynindx, bfd_vma addend, | |
2069 | struct bfinfdpic_relocs_info *entry) | |
2070 | { | |
2071 | Elf_Internal_Rela outrel; | |
2072 | bfd_vma reloc_offset; | |
0f64bb02 | 2073 | |
c96a8570 BS |
2074 | outrel.r_offset = offset; |
2075 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); | |
2076 | outrel.r_addend = addend; | |
48d502e1 | 2077 | |
c96a8570 BS |
2078 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
2079 | BFD_ASSERT (reloc_offset < sreloc->size); | |
2080 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, | |
2081 | sreloc->contents + reloc_offset); | |
2082 | sreloc->reloc_count++; | |
48d502e1 | 2083 | |
c96a8570 BS |
2084 | /* If the entry's index is zero, this relocation was probably to a |
2085 | linkonce section that got discarded. We reserved a dynamic | |
2086 | relocation, but it was for another entry than the one we got at | |
2087 | the time of emitting the relocation. Unfortunately there's no | |
2088 | simple way for us to catch this situation, since the relocation | |
2089 | is cleared right before calling relocate_section, at which point | |
2090 | we no longer know what the relocation used to point to. */ | |
2091 | if (entry->symndx) | |
2092 | { | |
2093 | BFD_ASSERT (entry->dynrelocs > 0); | |
2094 | entry->dynrelocs--; | |
2095 | } | |
48d502e1 | 2096 | |
c96a8570 BS |
2097 | return reloc_offset; |
2098 | } | |
0f64bb02 | 2099 | |
c96a8570 | 2100 | /* Add a fixup to the ROFIXUP section. */ |
48d502e1 | 2101 | |
c96a8570 BS |
2102 | static bfd_vma |
2103 | _bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, | |
2104 | struct bfinfdpic_relocs_info *entry) | |
2105 | { | |
2106 | bfd_vma fixup_offset; | |
8aafe8b4 | 2107 | |
c96a8570 BS |
2108 | if (rofixup->flags & SEC_EXCLUDE) |
2109 | return -1; | |
0f64bb02 | 2110 | |
c96a8570 BS |
2111 | fixup_offset = rofixup->reloc_count * 4; |
2112 | if (rofixup->contents) | |
2113 | { | |
2114 | BFD_ASSERT (fixup_offset < rofixup->size); | |
2115 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); | |
2116 | } | |
2117 | rofixup->reloc_count++; | |
0f64bb02 | 2118 | |
c96a8570 BS |
2119 | if (entry && entry->symndx) |
2120 | { | |
2121 | /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc | |
2122 | above. */ | |
2123 | BFD_ASSERT (entry->fixups > 0); | |
2124 | entry->fixups--; | |
2125 | } | |
f4707595 | 2126 | |
c96a8570 BS |
2127 | return fixup_offset; |
2128 | } | |
0f64bb02 | 2129 | |
c96a8570 BS |
2130 | /* Find the segment number in which OSEC, and output section, is |
2131 | located. */ | |
ca889129 | 2132 | |
c96a8570 BS |
2133 | static unsigned |
2134 | _bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec) | |
2135 | { | |
2136 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); | |
0f64bb02 | 2137 | |
c96a8570 BS |
2138 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
2139 | } | |
2140 | ||
2141 | inline static bfd_boolean | |
2142 | _bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) | |
2143 | { | |
2144 | unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec); | |
2145 | ||
2146 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); | |
2147 | } | |
2148 | ||
2149 | /* Generate relocations for GOT entries, function descriptors, and | |
2150 | code for PLT and lazy PLT entries. */ | |
2151 | ||
2152 | inline static bfd_boolean | |
2153 | _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry, | |
2154 | bfd *output_bfd, | |
2155 | struct bfd_link_info *info, | |
2156 | asection *sec, | |
2157 | Elf_Internal_Sym *sym, | |
2158 | bfd_vma addend) | |
2159 | ||
2160 | { | |
2161 | bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; | |
2162 | int dynindx = -1; | |
2163 | ||
2164 | if (entry->done) | |
2165 | return TRUE; | |
2166 | entry->done = 1; | |
2167 | ||
2168 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry) | |
2169 | { | |
2170 | /* If the symbol is dynamic, consider it for dynamic | |
2171 | relocations, otherwise decay to section + offset. */ | |
2172 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) | |
2173 | dynindx = entry->d.h->dynindx; | |
2174 | else | |
2175 | { | |
6a9adeca BS |
2176 | if (sec |
2177 | && sec->output_section | |
c96a8570 BS |
2178 | && ! bfd_is_abs_section (sec->output_section) |
2179 | && ! bfd_is_und_section (sec->output_section)) | |
2180 | dynindx = elf_section_data (sec->output_section)->dynindx; | |
2181 | else | |
2182 | dynindx = 0; | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | /* Generate relocation for GOT entry pointing to the symbol. */ | |
2187 | if (entry->got_entry) | |
2188 | { | |
2189 | int idx = dynindx; | |
2190 | bfd_vma ad = addend; | |
2191 | ||
2192 | /* If the symbol is dynamic but binds locally, use | |
2193 | section+offset. */ | |
2194 | if (sec && (entry->symndx != -1 | |
2195 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2196 | { | |
2197 | if (entry->symndx == -1) | |
2198 | ad += entry->d.h->root.u.def.value; | |
2199 | else | |
2200 | ad += sym->st_value; | |
2201 | ad += sec->output_offset; | |
2202 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2203 | idx = elf_section_data (sec->output_section)->dynindx; | |
2204 | else | |
2205 | idx = 0; | |
2206 | } | |
2207 | ||
2208 | /* If we're linking an executable at a fixed address, we can | |
2209 | omit the dynamic relocation as long as the symbol is local to | |
2210 | this module. */ | |
2211 | if (info->executable && !info->pie | |
2212 | && (entry->symndx != -1 | |
2213 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2214 | { | |
2215 | if (sec) | |
2216 | ad += sec->output_section->vma; | |
2217 | if (entry->symndx != -1 | |
2218 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2219 | _bfinfdpic_add_rofixup (output_bfd, | |
2220 | bfinfdpic_gotfixup_section (info), | |
2221 | bfinfdpic_got_section (info)->output_section | |
2222 | ->vma | |
2223 | + bfinfdpic_got_section (info)->output_offset | |
2224 | + bfinfdpic_got_initial_offset (info) | |
2225 | + entry->got_entry, entry); | |
2226 | } | |
2227 | else | |
2228 | _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info), | |
2229 | _bfd_elf_section_offset | |
2230 | (output_bfd, info, | |
2231 | bfinfdpic_got_section (info), | |
2232 | bfinfdpic_got_initial_offset (info) | |
2233 | + entry->got_entry) | |
2234 | + bfinfdpic_got_section (info) | |
2235 | ->output_section->vma | |
2236 | + bfinfdpic_got_section (info)->output_offset, | |
cb88ce9f | 2237 | R_BFIN_BYTE4_DATA, idx, ad, entry); |
c96a8570 BS |
2238 | |
2239 | bfd_put_32 (output_bfd, ad, | |
2240 | bfinfdpic_got_section (info)->contents | |
2241 | + bfinfdpic_got_initial_offset (info) | |
2242 | + entry->got_entry); | |
2243 | } | |
2244 | ||
2245 | /* Generate relocation for GOT entry pointing to a canonical | |
2246 | function descriptor. */ | |
2247 | if (entry->fdgot_entry) | |
2248 | { | |
2249 | int reloc, idx; | |
2250 | bfd_vma ad = 0; | |
2251 | ||
2252 | if (! (entry->symndx == -1 | |
2253 | && entry->d.h->root.type == bfd_link_hash_undefweak | |
2254 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2255 | { | |
2256 | /* If the symbol is dynamic and there may be dynamic symbol | |
2257 | resolution because we are, or are linked with, a shared | |
2258 | library, emit a FUNCDESC relocation such that the dynamic | |
2259 | linker will allocate the function descriptor. If the | |
2260 | symbol needs a non-local function descriptor but binds | |
2261 | locally (e.g., its visibility is protected, emit a | |
2262 | dynamic relocation decayed to section+offset. */ | |
2263 | if (entry->symndx == -1 | |
2264 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h) | |
2265 | && BFINFDPIC_SYM_LOCAL (info, entry->d.h) | |
2266 | && !(info->executable && !info->pie)) | |
2267 | { | |
2268 | reloc = R_BFIN_FUNCDESC; | |
2269 | idx = elf_section_data (entry->d.h->root.u.def.section | |
2270 | ->output_section)->dynindx; | |
2271 | ad = entry->d.h->root.u.def.section->output_offset | |
2272 | + entry->d.h->root.u.def.value; | |
2273 | } | |
2274 | else if (entry->symndx == -1 | |
2275 | && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) | |
2276 | { | |
2277 | reloc = R_BFIN_FUNCDESC; | |
2278 | idx = dynindx; | |
2279 | ad = addend; | |
2280 | if (ad) | |
2281 | return FALSE; | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | /* Otherwise, we know we have a private function descriptor, | |
2286 | so reference it directly. */ | |
2287 | if (elf_hash_table (info)->dynamic_sections_created) | |
2288 | BFD_ASSERT (entry->privfd); | |
cb88ce9f | 2289 | reloc = R_BFIN_BYTE4_DATA; |
c96a8570 BS |
2290 | idx = elf_section_data (bfinfdpic_got_section (info) |
2291 | ->output_section)->dynindx; | |
2292 | ad = bfinfdpic_got_section (info)->output_offset | |
2293 | + bfinfdpic_got_initial_offset (info) + entry->fd_entry; | |
2294 | } | |
2295 | ||
2296 | /* If there is room for dynamic symbol resolution, emit the | |
2297 | dynamic relocation. However, if we're linking an | |
2298 | executable at a fixed location, we won't have emitted a | |
2299 | dynamic symbol entry for the got section, so idx will be | |
2300 | zero, which means we can and should compute the address | |
2301 | of the private descriptor ourselves. */ | |
2302 | if (info->executable && !info->pie | |
2303 | && (entry->symndx != -1 | |
2304 | || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) | |
2305 | { | |
2306 | ad += bfinfdpic_got_section (info)->output_section->vma; | |
2307 | _bfinfdpic_add_rofixup (output_bfd, | |
2308 | bfinfdpic_gotfixup_section (info), | |
2309 | bfinfdpic_got_section (info) | |
2310 | ->output_section->vma | |
2311 | + bfinfdpic_got_section (info) | |
2312 | ->output_offset | |
2313 | + bfinfdpic_got_initial_offset (info) | |
2314 | + entry->fdgot_entry, entry); | |
2315 | } | |
2316 | else | |
2317 | _bfinfdpic_add_dyn_reloc (output_bfd, | |
2318 | bfinfdpic_gotrel_section (info), | |
2319 | _bfd_elf_section_offset | |
2320 | (output_bfd, info, | |
2321 | bfinfdpic_got_section (info), | |
2322 | bfinfdpic_got_initial_offset (info) | |
2323 | + entry->fdgot_entry) | |
2324 | + bfinfdpic_got_section (info) | |
2325 | ->output_section->vma | |
2326 | + bfinfdpic_got_section (info) | |
2327 | ->output_offset, | |
2328 | reloc, idx, ad, entry); | |
2329 | } | |
f4707595 | 2330 | |
c96a8570 BS |
2331 | bfd_put_32 (output_bfd, ad, |
2332 | bfinfdpic_got_section (info)->contents | |
2333 | + bfinfdpic_got_initial_offset (info) | |
2334 | + entry->fdgot_entry); | |
2335 | } | |
2336 | ||
2337 | /* Generate relocation to fill in a private function descriptor in | |
2338 | the GOT. */ | |
2339 | if (entry->fd_entry) | |
2340 | { | |
2341 | int idx = dynindx; | |
2342 | bfd_vma ad = addend; | |
2343 | bfd_vma ofst; | |
2344 | long lowword, highword; | |
2345 | ||
2346 | /* If the symbol is dynamic but binds locally, use | |
2347 | section+offset. */ | |
2348 | if (sec && (entry->symndx != -1 | |
2349 | || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
2350 | { | |
2351 | if (entry->symndx == -1) | |
2352 | ad += entry->d.h->root.u.def.value; | |
2353 | else | |
2354 | ad += sym->st_value; | |
2355 | ad += sec->output_offset; | |
2356 | if (sec->output_section && elf_section_data (sec->output_section)) | |
2357 | idx = elf_section_data (sec->output_section)->dynindx; | |
2358 | else | |
2359 | idx = 0; | |
48d502e1 | 2360 | } |
f4707595 | 2361 | |
c96a8570 BS |
2362 | /* If we're linking an executable at a fixed address, we can |
2363 | omit the dynamic relocation as long as the symbol is local to | |
2364 | this module. */ | |
2365 | if (info->executable && !info->pie | |
2366 | && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h))) | |
48d502e1 | 2367 | { |
c96a8570 BS |
2368 | if (sec) |
2369 | ad += sec->output_section->vma; | |
2370 | ofst = 0; | |
2371 | if (entry->symndx != -1 | |
2372 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
2373 | { | |
2374 | _bfinfdpic_add_rofixup (output_bfd, | |
2375 | bfinfdpic_gotfixup_section (info), | |
2376 | bfinfdpic_got_section (info) | |
2377 | ->output_section->vma | |
2378 | + bfinfdpic_got_section (info) | |
2379 | ->output_offset | |
2380 | + bfinfdpic_got_initial_offset (info) | |
2381 | + entry->fd_entry, entry); | |
2382 | _bfinfdpic_add_rofixup (output_bfd, | |
2383 | bfinfdpic_gotfixup_section (info), | |
2384 | bfinfdpic_got_section (info) | |
2385 | ->output_section->vma | |
2386 | + bfinfdpic_got_section (info) | |
2387 | ->output_offset | |
2388 | + bfinfdpic_got_initial_offset (info) | |
2389 | + entry->fd_entry + 4, entry); | |
2390 | } | |
2391 | } | |
2392 | else | |
2393 | { | |
2394 | ofst | |
2395 | = _bfinfdpic_add_dyn_reloc (output_bfd, | |
2396 | entry->lazyplt | |
2397 | ? bfinfdpic_pltrel_section (info) | |
2398 | : bfinfdpic_gotrel_section (info), | |
2399 | _bfd_elf_section_offset | |
2400 | (output_bfd, info, | |
2401 | bfinfdpic_got_section (info), | |
2402 | bfinfdpic_got_initial_offset (info) | |
2403 | + entry->fd_entry) | |
2404 | + bfinfdpic_got_section (info) | |
2405 | ->output_section->vma | |
2406 | + bfinfdpic_got_section (info) | |
2407 | ->output_offset, | |
2408 | R_BFIN_FUNCDESC_VALUE, idx, ad, entry); | |
48d502e1 | 2409 | } |
f4707595 | 2410 | |
c96a8570 BS |
2411 | /* If we've omitted the dynamic relocation, just emit the fixed |
2412 | addresses of the symbol and of the local GOT base offset. */ | |
2413 | if (info->executable && !info->pie && sec && sec->output_section) | |
48d502e1 | 2414 | { |
c96a8570 BS |
2415 | lowword = ad; |
2416 | highword = bfinfdpic_got_section (info)->output_section->vma | |
2417 | + bfinfdpic_got_section (info)->output_offset | |
2418 | + bfinfdpic_got_initial_offset (info); | |
2419 | } | |
2420 | else if (entry->lazyplt) | |
2421 | { | |
2422 | if (ad) | |
2423 | return FALSE; | |
f4707595 | 2424 | |
c96a8570 | 2425 | fd_lazy_rel_offset = ofst; |
f4707595 | 2426 | |
c96a8570 BS |
2427 | /* A function descriptor used for lazy or local resolving is |
2428 | initialized such that its high word contains the output | |
2429 | section index in which the PLT entries are located, and | |
2430 | the low word contains the address of the lazy PLT entry | |
2431 | entry point, that must be within the memory region | |
2432 | assigned to that section. */ | |
2433 | lowword = entry->lzplt_entry + 4 | |
2434 | + bfinfdpic_plt_section (info)->output_offset | |
2435 | + bfinfdpic_plt_section (info)->output_section->vma; | |
2436 | highword = _bfinfdpic_osec_to_segment | |
2437 | (output_bfd, bfinfdpic_plt_section (info)->output_section); | |
2438 | } | |
2439 | else | |
2440 | { | |
2441 | /* A function descriptor for a local function gets the index | |
2442 | of the section. For a non-local function, it's | |
2443 | disregarded. */ | |
2444 | lowword = ad; | |
6a9adeca BS |
2445 | if (sec == NULL |
2446 | || (entry->symndx == -1 && entry->d.h->dynindx != -1 | |
2447 | && entry->d.h->dynindx == idx)) | |
c96a8570 BS |
2448 | highword = 0; |
2449 | else | |
2450 | highword = _bfinfdpic_osec_to_segment | |
2451 | (output_bfd, sec->output_section); | |
48d502e1 | 2452 | } |
f4707595 | 2453 | |
c96a8570 BS |
2454 | bfd_put_32 (output_bfd, lowword, |
2455 | bfinfdpic_got_section (info)->contents | |
2456 | + bfinfdpic_got_initial_offset (info) | |
2457 | + entry->fd_entry); | |
2458 | bfd_put_32 (output_bfd, highword, | |
2459 | bfinfdpic_got_section (info)->contents | |
2460 | + bfinfdpic_got_initial_offset (info) | |
2461 | + entry->fd_entry + 4); | |
2462 | } | |
2463 | ||
2464 | /* Generate code for the PLT entry. */ | |
2465 | if (entry->plt_entry != (bfd_vma) -1) | |
2466 | { | |
2467 | bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents | |
2468 | + entry->plt_entry; | |
2469 | ||
2470 | BFD_ASSERT (entry->fd_entry); | |
2471 | ||
2472 | /* Figure out what kind of PLT entry we need, depending on the | |
2473 | location of the function descriptor within the GOT. */ | |
2474 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
2475 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
48d502e1 | 2476 | { |
c96a8570 BS |
2477 | /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */ |
2478 | bfd_put_32 (output_bfd, | |
2479 | 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000), | |
2480 | plt_code); | |
2481 | bfd_put_32 (output_bfd, | |
2482 | 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000), | |
2483 | plt_code + 4); | |
2484 | plt_code += 8; | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | /* P1.L = fd_entry; P1.H = fd_entry; | |
2489 | P3 = P3 + P1; | |
2490 | P1 = [P3]; | |
2491 | P3 = [P3 + 4]; */ | |
2492 | bfd_put_32 (output_bfd, | |
2493 | 0xe109 | (entry->fd_entry << 16), | |
2494 | plt_code); | |
2495 | bfd_put_32 (output_bfd, | |
2496 | 0xe149 | (entry->fd_entry & 0xFFFF0000), | |
2497 | plt_code + 4); | |
2498 | bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8); | |
2499 | bfd_put_16 (output_bfd, 0x9159, plt_code + 10); | |
2500 | bfd_put_16 (output_bfd, 0xac5b, plt_code + 12); | |
2501 | plt_code += 14; | |
2502 | } | |
2503 | /* JUMP (P1) */ | |
2504 | bfd_put_16 (output_bfd, 0x0051, plt_code); | |
2505 | } | |
f4707595 | 2506 | |
c96a8570 BS |
2507 | /* Generate code for the lazy PLT entry. */ |
2508 | if (entry->lzplt_entry != (bfd_vma) -1) | |
2509 | { | |
2510 | bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents | |
2511 | + entry->lzplt_entry; | |
2512 | bfd_vma resolverStub_addr; | |
0f64bb02 | 2513 | |
c96a8570 BS |
2514 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
2515 | lzplt_code += 4; | |
0f64bb02 | 2516 | |
c96a8570 BS |
2517 | resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE |
2518 | * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC; | |
2519 | if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info)) | |
2520 | resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA; | |
0f64bb02 | 2521 | |
c96a8570 | 2522 | if (entry->lzplt_entry == resolverStub_addr) |
0f64bb02 | 2523 | { |
c96a8570 BS |
2524 | /* This is a lazy PLT entry that includes a resolver call. |
2525 | P2 = [P3]; | |
2526 | R3 = [P3 + 4]; | |
2527 | JUMP (P2); */ | |
2528 | bfd_put_32 (output_bfd, | |
2529 | 0xa05b915a, | |
2530 | lzplt_code); | |
2531 | bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4); | |
2532 | } | |
2533 | else | |
2534 | { | |
2535 | /* JUMP.S resolverStub */ | |
2536 | bfd_put_16 (output_bfd, | |
2537 | 0x2000 | |
2538 | | (((resolverStub_addr - entry->lzplt_entry) | |
2539 | / 2) & (((bfd_vma)1 << 12) - 1)), | |
2540 | lzplt_code); | |
2541 | } | |
2542 | } | |
0f64bb02 | 2543 | |
c96a8570 BS |
2544 | return TRUE; |
2545 | } | |
2546 | \f | |
2547 | /* Relocate an Blackfin ELF section. | |
48d502e1 | 2548 | |
c96a8570 BS |
2549 | The RELOCATE_SECTION function is called by the new ELF backend linker |
2550 | to handle the relocations for a section. | |
48d502e1 | 2551 | |
c96a8570 BS |
2552 | The relocs are always passed as Rela structures; if the section |
2553 | actually uses Rel structures, the r_addend field will always be | |
2554 | zero. | |
48d502e1 | 2555 | |
c96a8570 BS |
2556 | This function is responsible for adjusting the section contents as |
2557 | necessary, and (if using Rela relocs and generating a relocatable | |
2558 | output file) adjusting the reloc addend as necessary. | |
48d502e1 | 2559 | |
c96a8570 BS |
2560 | This function does not have to worry about setting the reloc |
2561 | address or the reloc symbol index. | |
48d502e1 | 2562 | |
c96a8570 | 2563 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
48d502e1 | 2564 | |
c96a8570 BS |
2565 | LOCAL_SECTIONS is an array giving the section in the input file |
2566 | corresponding to the st_shndx field of each local symbol. | |
48d502e1 | 2567 | |
c96a8570 BS |
2568 | The global hash table entry for the global symbols can be found |
2569 | via elf_sym_hashes (input_bfd). | |
48d502e1 | 2570 | |
c96a8570 BS |
2571 | When generating relocatable output, this function must handle |
2572 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
2573 | going to be the section symbol corresponding to the output | |
2574 | section, which means that the addend must be adjusted | |
2575 | accordingly. */ | |
48d502e1 BS |
2576 | |
2577 | static bfd_boolean | |
c96a8570 BS |
2578 | bfinfdpic_relocate_section (bfd * output_bfd, |
2579 | struct bfd_link_info *info, | |
2580 | bfd * input_bfd, | |
2581 | asection * input_section, | |
2582 | bfd_byte * contents, | |
2583 | Elf_Internal_Rela * relocs, | |
2584 | Elf_Internal_Sym * local_syms, | |
2585 | asection ** local_sections) | |
48d502e1 | 2586 | { |
48d502e1 BS |
2587 | Elf_Internal_Shdr *symtab_hdr; |
2588 | struct elf_link_hash_entry **sym_hashes; | |
48d502e1 BS |
2589 | Elf_Internal_Rela *rel; |
2590 | Elf_Internal_Rela *relend; | |
c96a8570 BS |
2591 | unsigned isec_segment, got_segment, plt_segment, |
2592 | check_segment[2]; | |
2593 | int silence_segment_error = !(info->shared || info->pie); | |
48d502e1 | 2594 | |
c96a8570 | 2595 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
48d502e1 | 2596 | sym_hashes = elf_sym_hashes (input_bfd); |
c96a8570 | 2597 | relend = relocs + input_section->reloc_count; |
48d502e1 | 2598 | |
c96a8570 BS |
2599 | isec_segment = _bfinfdpic_osec_to_segment (output_bfd, |
2600 | input_section->output_section); | |
2601 | if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info)) | |
2602 | got_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2603 | bfinfdpic_got_section (info) | |
2604 | ->output_section); | |
2605 | else | |
2606 | got_segment = -1; | |
2607 | if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created) | |
2608 | plt_segment = _bfinfdpic_osec_to_segment (output_bfd, | |
2609 | bfinfdpic_plt_section (info) | |
2610 | ->output_section); | |
2611 | else | |
2612 | plt_segment = -1; | |
48d502e1 | 2613 | |
c96a8570 | 2614 | for (rel = relocs; rel < relend; rel ++) |
48d502e1 | 2615 | { |
48d502e1 BS |
2616 | reloc_howto_type *howto; |
2617 | unsigned long r_symndx; | |
48d502e1 BS |
2618 | Elf_Internal_Sym *sym; |
2619 | asection *sec; | |
c96a8570 BS |
2620 | struct elf_link_hash_entry *h; |
2621 | bfd_vma relocation; | |
48d502e1 | 2622 | bfd_reloc_status_type r; |
c96a8570 BS |
2623 | const char * name = NULL; |
2624 | int r_type; | |
2625 | asection *osec; | |
2626 | struct bfinfdpic_relocs_info *picrel; | |
2627 | bfd_vma orig_addend = rel->r_addend; | |
48d502e1 BS |
2628 | |
2629 | r_type = ELF32_R_TYPE (rel->r_info); | |
48d502e1 | 2630 | |
c96a8570 BS |
2631 | if (r_type == R_BFIN_GNU_VTINHERIT |
2632 | || r_type == R_BFIN_GNU_VTENTRY) | |
48d502e1 BS |
2633 | continue; |
2634 | ||
c96a8570 | 2635 | r_symndx = ELF32_R_SYM (rel->r_info); |
48d502e1 BS |
2636 | howto = bfin_reloc_type_lookup (input_bfd, r_type); |
2637 | if (howto == NULL) | |
2638 | { | |
2639 | bfd_set_error (bfd_error_bad_value); | |
2640 | return FALSE; | |
2641 | } | |
48d502e1 | 2642 | |
c96a8570 BS |
2643 | h = NULL; |
2644 | sym = NULL; | |
2645 | sec = NULL; | |
2646 | ||
2647 | if (r_symndx < symtab_hdr->sh_info) | |
2648 | { | |
2649 | sym = local_syms + r_symndx; | |
2650 | osec = sec = local_sections [r_symndx]; | |
2651 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2652 | ||
2653 | name = bfd_elf_string_from_elf_section | |
2654 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
2655 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
2656 | } | |
2657 | else | |
2658 | { | |
2659 | bfd_boolean warned; | |
2660 | bfd_boolean unresolved_reloc; | |
2661 | ||
2662 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2663 | r_symndx, symtab_hdr, sym_hashes, | |
2664 | h, sec, relocation, | |
2665 | unresolved_reloc, warned); | |
2666 | osec = sec; | |
2667 | } | |
2668 | ||
dbaa2011 | 2669 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 2670 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 2671 | rel, 1, relend, howto, 0, contents); |
c96a8570 BS |
2672 | |
2673 | if (info->relocatable) | |
2674 | continue; | |
2675 | ||
2676 | if (h != NULL | |
2677 | && (h->root.type == bfd_link_hash_defined | |
2678 | || h->root.type == bfd_link_hash_defweak) | |
2679 | && !BFINFDPIC_SYM_LOCAL (info, h)) | |
2680 | { | |
2681 | osec = sec = NULL; | |
2682 | relocation = 0; | |
2683 | } | |
2684 | ||
2685 | switch (r_type) | |
2686 | { | |
cb88ce9f BS |
2687 | case R_BFIN_PCREL24: |
2688 | case R_BFIN_PCREL24_JUMP_L: | |
2689 | case R_BFIN_BYTE4_DATA: | |
c96a8570 BS |
2690 | if (! IS_FDPIC (output_bfd)) |
2691 | goto non_fdpic; | |
2692 | ||
2693 | case R_BFIN_GOT17M4: | |
2694 | case R_BFIN_GOTHI: | |
2695 | case R_BFIN_GOTLO: | |
2696 | case R_BFIN_FUNCDESC_GOT17M4: | |
2697 | case R_BFIN_FUNCDESC_GOTHI: | |
2698 | case R_BFIN_FUNCDESC_GOTLO: | |
2699 | case R_BFIN_GOTOFF17M4: | |
2700 | case R_BFIN_GOTOFFHI: | |
2701 | case R_BFIN_GOTOFFLO: | |
2702 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2703 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2704 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2705 | case R_BFIN_FUNCDESC: | |
2706 | case R_BFIN_FUNCDESC_VALUE: | |
2707 | if (h != NULL) | |
2708 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info | |
2709 | (info), input_bfd, h, | |
2710 | orig_addend, INSERT); | |
2711 | else | |
2712 | /* In order to find the entry we created before, we must | |
2713 | use the original addend, not the one that may have been | |
2714 | modified by _bfd_elf_rela_local_sym(). */ | |
2715 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
2716 | (info), input_bfd, r_symndx, | |
2717 | orig_addend, INSERT); | |
2718 | if (! picrel) | |
2719 | return FALSE; | |
2720 | ||
2721 | if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, | |
2722 | osec, sym, | |
2723 | rel->r_addend)) | |
2724 | { | |
2725 | (*_bfd_error_handler) | |
2726 | (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"), | |
2727 | input_bfd, input_section, rel->r_offset, name); | |
2728 | return FALSE; | |
2729 | ||
2730 | } | |
48d502e1 | 2731 | |
c96a8570 | 2732 | break; |
ab96bf03 | 2733 | |
c96a8570 BS |
2734 | default: |
2735 | non_fdpic: | |
2736 | picrel = NULL; | |
1d5316ab AM |
2737 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h) |
2738 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
2739 | rel->r_offset) != (bfd_vma) -1) | |
c96a8570 BS |
2740 | { |
2741 | info->callbacks->warning | |
2742 | (info, _("relocation references symbol not defined in the module"), | |
2743 | name, input_bfd, input_section, rel->r_offset); | |
2744 | return FALSE; | |
2745 | } | |
2746 | break; | |
48d502e1 BS |
2747 | } |
2748 | ||
c96a8570 | 2749 | switch (r_type) |
ab96bf03 | 2750 | { |
cb88ce9f BS |
2751 | case R_BFIN_PCREL24: |
2752 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
2753 | check_segment[0] = isec_segment; |
2754 | if (! IS_FDPIC (output_bfd)) | |
2755 | check_segment[1] = isec_segment; | |
2756 | else if (picrel->plt) | |
2757 | { | |
2758 | relocation = bfinfdpic_plt_section (info)->output_section->vma | |
2759 | + bfinfdpic_plt_section (info)->output_offset | |
2760 | + picrel->plt_entry; | |
2761 | check_segment[1] = plt_segment; | |
2762 | } | |
2763 | /* We don't want to warn on calls to undefined weak symbols, | |
2764 | as calls to them must be protected by non-NULL tests | |
2765 | anyway, and unprotected calls would invoke undefined | |
2766 | behavior. */ | |
2767 | else if (picrel->symndx == -1 | |
2768 | && picrel->d.h->root.type == bfd_link_hash_undefweak) | |
2769 | check_segment[1] = check_segment[0]; | |
2770 | else | |
2771 | check_segment[1] = sec | |
2772 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2773 | : (unsigned)-1; | |
2774 | break; | |
ab96bf03 | 2775 | |
c96a8570 BS |
2776 | case R_BFIN_GOT17M4: |
2777 | case R_BFIN_GOTHI: | |
2778 | case R_BFIN_GOTLO: | |
2779 | relocation = picrel->got_entry; | |
2780 | check_segment[0] = check_segment[1] = got_segment; | |
2781 | break; | |
ab96bf03 | 2782 | |
c96a8570 BS |
2783 | case R_BFIN_FUNCDESC_GOT17M4: |
2784 | case R_BFIN_FUNCDESC_GOTHI: | |
2785 | case R_BFIN_FUNCDESC_GOTLO: | |
2786 | relocation = picrel->fdgot_entry; | |
2787 | check_segment[0] = check_segment[1] = got_segment; | |
2788 | break; | |
48d502e1 | 2789 | |
c96a8570 BS |
2790 | case R_BFIN_GOTOFFHI: |
2791 | case R_BFIN_GOTOFF17M4: | |
2792 | case R_BFIN_GOTOFFLO: | |
2793 | relocation -= bfinfdpic_got_section (info)->output_section->vma | |
2794 | + bfinfdpic_got_section (info)->output_offset | |
2795 | + bfinfdpic_got_initial_offset (info); | |
2796 | check_segment[0] = got_segment; | |
2797 | check_segment[1] = sec | |
2798 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
2799 | : (unsigned)-1; | |
2800 | break; | |
48d502e1 | 2801 | |
c96a8570 BS |
2802 | case R_BFIN_FUNCDESC_GOTOFF17M4: |
2803 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
2804 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2805 | relocation = picrel->fd_entry; | |
2806 | check_segment[0] = check_segment[1] = got_segment; | |
2807 | break; | |
48d502e1 | 2808 | |
c96a8570 | 2809 | case R_BFIN_FUNCDESC: |
48d502e1 | 2810 | { |
c96a8570 BS |
2811 | int dynindx; |
2812 | bfd_vma addend = rel->r_addend; | |
48d502e1 | 2813 | |
c96a8570 BS |
2814 | if (! (h && h->root.type == bfd_link_hash_undefweak |
2815 | && BFINFDPIC_SYM_LOCAL (info, h))) | |
2816 | { | |
2817 | /* If the symbol is dynamic and there may be dynamic | |
2818 | symbol resolution because we are or are linked with a | |
2819 | shared library, emit a FUNCDESC relocation such that | |
2820 | the dynamic linker will allocate the function | |
2821 | descriptor. If the symbol needs a non-local function | |
2822 | descriptor but binds locally (e.g., its visibility is | |
2823 | protected, emit a dynamic relocation decayed to | |
2824 | section+offset. */ | |
2825 | if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h) | |
2826 | && BFINFDPIC_SYM_LOCAL (info, h) | |
2827 | && !(info->executable && !info->pie)) | |
2828 | { | |
2829 | dynindx = elf_section_data (h->root.u.def.section | |
2830 | ->output_section)->dynindx; | |
2831 | addend += h->root.u.def.section->output_offset | |
2832 | + h->root.u.def.value; | |
2833 | } | |
2834 | else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)) | |
2835 | { | |
2836 | if (addend) | |
2837 | { | |
2838 | info->callbacks->warning | |
2839 | (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"), | |
2840 | name, input_bfd, input_section, rel->r_offset); | |
2841 | return FALSE; | |
2842 | } | |
2843 | dynindx = h->dynindx; | |
2844 | } | |
2845 | else | |
2846 | { | |
2847 | /* Otherwise, we know we have a private function | |
2848 | descriptor, so reference it directly. */ | |
2849 | BFD_ASSERT (picrel->privfd); | |
cb88ce9f | 2850 | r_type = R_BFIN_BYTE4_DATA; |
c96a8570 BS |
2851 | dynindx = elf_section_data (bfinfdpic_got_section (info) |
2852 | ->output_section)->dynindx; | |
2853 | addend = bfinfdpic_got_section (info)->output_offset | |
2854 | + bfinfdpic_got_initial_offset (info) | |
2855 | + picrel->fd_entry; | |
2856 | } | |
2857 | ||
2858 | /* If there is room for dynamic symbol resolution, emit | |
2859 | the dynamic relocation. However, if we're linking an | |
2860 | executable at a fixed location, we won't have emitted a | |
2861 | dynamic symbol entry for the got section, so idx will | |
2862 | be zero, which means we can and should compute the | |
2863 | address of the private descriptor ourselves. */ | |
2864 | if (info->executable && !info->pie | |
2865 | && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h))) | |
2866 | { | |
6a9adeca BS |
2867 | bfd_vma offset; |
2868 | ||
c96a8570 BS |
2869 | addend += bfinfdpic_got_section (info)->output_section->vma; |
2870 | if ((bfd_get_section_flags (output_bfd, | |
2871 | input_section->output_section) | |
2872 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2873 | { | |
2874 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2875 | input_section | |
2876 | ->output_section)) | |
2877 | { | |
2878 | info->callbacks->warning | |
2879 | (info, | |
2880 | _("cannot emit fixups in read-only section"), | |
2881 | name, input_bfd, input_section, rel->r_offset); | |
2882 | return FALSE; | |
2883 | } | |
6a9adeca BS |
2884 | |
2885 | offset = _bfd_elf_section_offset | |
2886 | (output_bfd, info, | |
2887 | input_section, rel->r_offset); | |
2888 | ||
2889 | if (offset != (bfd_vma)-1) | |
2890 | _bfinfdpic_add_rofixup (output_bfd, | |
2891 | bfinfdpic_gotfixup_section | |
2892 | (info), | |
2893 | offset + input_section | |
2894 | ->output_section->vma | |
2895 | + input_section->output_offset, | |
2896 | picrel); | |
c96a8570 BS |
2897 | } |
2898 | } | |
2899 | else if ((bfd_get_section_flags (output_bfd, | |
2900 | input_section->output_section) | |
2901 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
2902 | { | |
2903 | bfd_vma offset; | |
2904 | ||
2905 | if (_bfinfdpic_osec_readonly_p (output_bfd, | |
2906 | input_section | |
2907 | ->output_section)) | |
2908 | { | |
2909 | info->callbacks->warning | |
2910 | (info, | |
2911 | _("cannot emit dynamic relocations in read-only section"), | |
2912 | name, input_bfd, input_section, rel->r_offset); | |
2913 | return FALSE; | |
2914 | } | |
2915 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2916 | input_section, rel->r_offset); | |
6a9adeca BS |
2917 | |
2918 | if (offset != (bfd_vma)-1) | |
c96a8570 BS |
2919 | _bfinfdpic_add_dyn_reloc (output_bfd, |
2920 | bfinfdpic_gotrel_section (info), | |
2921 | offset + input_section | |
2922 | ->output_section->vma | |
2923 | + input_section->output_offset, | |
2924 | r_type, | |
2925 | dynindx, addend, picrel); | |
2926 | } | |
2927 | else | |
2928 | addend += bfinfdpic_got_section (info)->output_section->vma; | |
2929 | } | |
2930 | ||
2931 | /* We want the addend in-place because dynamic | |
2932 | relocations are REL. Setting relocation to it should | |
2933 | arrange for it to be installed. */ | |
2934 | relocation = addend - rel->r_addend; | |
2935 | } | |
2936 | check_segment[0] = check_segment[1] = got_segment; | |
2937 | break; | |
2938 | ||
cb88ce9f | 2939 | case R_BFIN_BYTE4_DATA: |
c96a8570 | 2940 | if (! IS_FDPIC (output_bfd)) |
7a84e3da | 2941 | { |
c96a8570 BS |
2942 | check_segment[0] = check_segment[1] = -1; |
2943 | break; | |
7a84e3da | 2944 | } |
c96a8570 BS |
2945 | /* Fall through. */ |
2946 | case R_BFIN_FUNCDESC_VALUE: | |
2947 | { | |
2948 | int dynindx; | |
2949 | bfd_vma addend = rel->r_addend; | |
2950 | bfd_vma offset; | |
2951 | offset = _bfd_elf_section_offset (output_bfd, info, | |
2952 | input_section, rel->r_offset); | |
7a84e3da | 2953 | |
c96a8570 BS |
2954 | /* If the symbol is dynamic but binds locally, use |
2955 | section+offset. */ | |
2956 | if (h && ! BFINFDPIC_SYM_LOCAL (info, h)) | |
48d502e1 | 2957 | { |
c96a8570 BS |
2958 | if (addend && r_type == R_BFIN_FUNCDESC_VALUE) |
2959 | { | |
2960 | info->callbacks->warning | |
2961 | (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"), | |
2962 | name, input_bfd, input_section, rel->r_offset); | |
2963 | return FALSE; | |
2964 | } | |
2965 | dynindx = h->dynindx; | |
48d502e1 | 2966 | } |
c96a8570 | 2967 | else |
48d502e1 | 2968 | { |
c96a8570 BS |
2969 | if (h) |
2970 | addend += h->root.u.def.value; | |
2971 | else | |
2972 | addend += sym->st_value; | |
2973 | if (osec) | |
2974 | addend += osec->output_offset; | |
2975 | if (osec && osec->output_section | |
2976 | && ! bfd_is_abs_section (osec->output_section) | |
2977 | && ! bfd_is_und_section (osec->output_section)) | |
2978 | dynindx = elf_section_data (osec->output_section)->dynindx; | |
2979 | else | |
2980 | dynindx = 0; | |
2981 | } | |
48d502e1 | 2982 | |
c96a8570 BS |
2983 | /* If we're linking an executable at a fixed address, we |
2984 | can omit the dynamic relocation as long as the symbol | |
2985 | is defined in the current link unit (which is implied | |
2986 | by its output section not being NULL). */ | |
2987 | if (info->executable && !info->pie | |
2988 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) | |
2989 | { | |
2990 | if (osec) | |
2991 | addend += osec->output_section->vma; | |
2992 | if (IS_FDPIC (input_bfd) | |
2993 | && (bfd_get_section_flags (output_bfd, | |
2994 | input_section->output_section) | |
2995 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
48d502e1 | 2996 | { |
c96a8570 BS |
2997 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
2998 | input_section | |
2999 | ->output_section)) | |
48d502e1 | 3000 | { |
c96a8570 BS |
3001 | info->callbacks->warning |
3002 | (info, | |
3003 | _("cannot emit fixups in read-only section"), | |
3004 | name, input_bfd, input_section, rel->r_offset); | |
3005 | return FALSE; | |
3006 | } | |
3007 | if (!h || h->root.type != bfd_link_hash_undefweak) | |
3008 | { | |
6a9adeca | 3009 | if (offset != (bfd_vma)-1) |
c96a8570 | 3010 | { |
6a9adeca BS |
3011 | _bfinfdpic_add_rofixup (output_bfd, |
3012 | bfinfdpic_gotfixup_section | |
3013 | (info), | |
3014 | offset + input_section | |
3015 | ->output_section->vma | |
3016 | + input_section->output_offset, | |
3017 | picrel); | |
3018 | ||
3019 | if (r_type == R_BFIN_FUNCDESC_VALUE) | |
c96a8570 BS |
3020 | _bfinfdpic_add_rofixup |
3021 | (output_bfd, | |
3022 | bfinfdpic_gotfixup_section (info), | |
3023 | offset + input_section->output_section->vma | |
3024 | + input_section->output_offset + 4, picrel); | |
3025 | } | |
48d502e1 BS |
3026 | } |
3027 | } | |
48d502e1 BS |
3028 | } |
3029 | else | |
3030 | { | |
c96a8570 BS |
3031 | if ((bfd_get_section_flags (output_bfd, |
3032 | input_section->output_section) | |
3033 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
48d502e1 | 3034 | { |
c96a8570 BS |
3035 | if (_bfinfdpic_osec_readonly_p (output_bfd, |
3036 | input_section | |
3037 | ->output_section)) | |
48d502e1 | 3038 | { |
c96a8570 BS |
3039 | info->callbacks->warning |
3040 | (info, | |
3041 | _("cannot emit dynamic relocations in read-only section"), | |
3042 | name, input_bfd, input_section, rel->r_offset); | |
3043 | return FALSE; | |
48d502e1 | 3044 | } |
6a9adeca BS |
3045 | |
3046 | if (offset != (bfd_vma)-1) | |
c96a8570 BS |
3047 | _bfinfdpic_add_dyn_reloc (output_bfd, |
3048 | bfinfdpic_gotrel_section (info), | |
3049 | offset | |
6a9adeca | 3050 | + input_section->output_section->vma |
c96a8570 BS |
3051 | + input_section->output_offset, |
3052 | r_type, dynindx, addend, picrel); | |
48d502e1 | 3053 | } |
c96a8570 BS |
3054 | else if (osec) |
3055 | addend += osec->output_section->vma; | |
3056 | /* We want the addend in-place because dynamic | |
3057 | relocations are REL. Setting relocation to it | |
3058 | should arrange for it to be installed. */ | |
3059 | relocation = addend - rel->r_addend; | |
3060 | } | |
3061 | ||
6a9adeca | 3062 | if (r_type == R_BFIN_FUNCDESC_VALUE) |
c96a8570 BS |
3063 | { |
3064 | /* If we've omitted the dynamic relocation, just emit | |
3065 | the fixed addresses of the symbol and of the local | |
3066 | GOT base offset. */ | |
3067 | if (info->executable && !info->pie | |
3068 | && (!h || BFINFDPIC_SYM_LOCAL (info, h))) | |
3069 | bfd_put_32 (output_bfd, | |
3070 | bfinfdpic_got_section (info)->output_section->vma | |
3071 | + bfinfdpic_got_section (info)->output_offset | |
3072 | + bfinfdpic_got_initial_offset (info), | |
3073 | contents + rel->r_offset + 4); | |
3074 | else | |
3075 | /* A function descriptor used for lazy or local | |
3076 | resolving is initialized such that its high word | |
3077 | contains the output section index in which the | |
3078 | PLT entries are located, and the low word | |
3079 | contains the offset of the lazy PLT entry entry | |
3080 | point into that section. */ | |
3081 | bfd_put_32 (output_bfd, | |
3082 | h && ! BFINFDPIC_SYM_LOCAL (info, h) | |
3083 | ? 0 | |
3084 | : _bfinfdpic_osec_to_segment (output_bfd, | |
3085 | sec | |
3086 | ->output_section), | |
3087 | contents + rel->r_offset + 4); | |
48d502e1 | 3088 | } |
c96a8570 BS |
3089 | } |
3090 | check_segment[0] = check_segment[1] = got_segment; | |
3091 | break; | |
3092 | ||
3093 | default: | |
3094 | check_segment[0] = isec_segment; | |
3095 | check_segment[1] = sec | |
3096 | ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section) | |
3097 | : (unsigned)-1; | |
3098 | break; | |
3099 | } | |
3100 | ||
3101 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) | |
3102 | { | |
3103 | #if 1 /* If you take this out, remove the #error from fdpic-static-6.d | |
3104 | in the ld testsuite. */ | |
3105 | /* This helps catch problems in GCC while we can't do more | |
3106 | than static linking. The idea is to test whether the | |
3107 | input file basename is crt0.o only once. */ | |
3108 | if (silence_segment_error == 1) | |
3109 | silence_segment_error = | |
3110 | (strlen (input_bfd->filename) == 6 | |
007d6189 | 3111 | && filename_cmp (input_bfd->filename, "crt0.o") == 0) |
c96a8570 | 3112 | || (strlen (input_bfd->filename) > 6 |
007d6189 KT |
3113 | && filename_cmp (input_bfd->filename |
3114 | + strlen (input_bfd->filename) - 7, | |
c96a8570 BS |
3115 | "/crt0.o") == 0) |
3116 | ? -1 : 0; | |
3117 | #endif | |
3118 | if (!silence_segment_error | |
3119 | /* We don't want duplicate errors for undefined | |
3120 | symbols. */ | |
3121 | && !(picrel && picrel->symndx == -1 | |
3122 | && picrel->d.h->root.type == bfd_link_hash_undefined)) | |
3123 | info->callbacks->warning | |
3124 | (info, | |
3125 | (info->shared || info->pie) | |
3126 | ? _("relocations between different segments are not supported") | |
3127 | : _("warning: relocation references a different segment"), | |
3128 | name, input_bfd, input_section, rel->r_offset); | |
3129 | if (!silence_segment_error && (info->shared || info->pie)) | |
3130 | return FALSE; | |
3131 | elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC; | |
3132 | } | |
3133 | ||
3134 | switch (r_type) | |
3135 | { | |
3136 | case R_BFIN_GOTOFFHI: | |
3137 | /* We need the addend to be applied before we shift the | |
3138 | value right. */ | |
3139 | relocation += rel->r_addend; | |
3140 | /* Fall through. */ | |
3141 | case R_BFIN_GOTHI: | |
3142 | case R_BFIN_FUNCDESC_GOTHI: | |
3143 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3144 | relocation >>= 16; | |
3145 | /* Fall through. */ | |
48d502e1 | 3146 | |
c96a8570 BS |
3147 | case R_BFIN_GOTLO: |
3148 | case R_BFIN_FUNCDESC_GOTLO: | |
3149 | case R_BFIN_GOTOFFLO: | |
3150 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3151 | relocation &= 0xffff; | |
3152 | break; | |
48d502e1 | 3153 | |
48d502e1 | 3154 | default: |
48d502e1 BS |
3155 | break; |
3156 | } | |
3157 | ||
c96a8570 | 3158 | switch (r_type) |
48d502e1 | 3159 | { |
cb88ce9f BS |
3160 | case R_BFIN_PCREL24: |
3161 | case R_BFIN_PCREL24_JUMP_L: | |
c96a8570 BS |
3162 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
3163 | break; | |
3164 | /* Fall through. */ | |
3165 | ||
3166 | /* When referencing a GOT entry, a function descriptor or a | |
3167 | PLT, we don't want the addend to apply to the reference, | |
3168 | but rather to the referenced symbol. The actual entry | |
3169 | will have already been created taking the addend into | |
3170 | account, so cancel it out here. */ | |
3171 | case R_BFIN_GOT17M4: | |
3172 | case R_BFIN_GOTHI: | |
3173 | case R_BFIN_GOTLO: | |
3174 | case R_BFIN_FUNCDESC_GOT17M4: | |
3175 | case R_BFIN_FUNCDESC_GOTHI: | |
3176 | case R_BFIN_FUNCDESC_GOTLO: | |
3177 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
3178 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3179 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3180 | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4 | |
3181 | here, since we do want to apply the addend to the others. | |
3182 | Note that we've applied the addend to GOTOFFHI before we | |
3183 | shifted it right. */ | |
3184 | case R_BFIN_GOTOFFHI: | |
3185 | relocation -= rel->r_addend; | |
3186 | break; | |
3187 | ||
3188 | default: | |
3189 | break; | |
48d502e1 BS |
3190 | } |
3191 | ||
c96a8570 BS |
3192 | r = bfin_final_link_relocate (rel, howto, input_bfd, input_section, |
3193 | contents, rel->r_offset, | |
3194 | relocation, rel->r_addend); | |
3195 | ||
48d502e1 BS |
3196 | if (r != bfd_reloc_ok) |
3197 | { | |
c96a8570 | 3198 | const char * msg = (const char *) NULL; |
48d502e1 | 3199 | |
c96a8570 | 3200 | switch (r) |
48d502e1 | 3201 | { |
c96a8570 BS |
3202 | case bfd_reloc_overflow: |
3203 | r = info->callbacks->reloc_overflow | |
3204 | (info, (h ? &h->root : NULL), name, howto->name, | |
3205 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
3206 | break; | |
0f64bb02 | 3207 | |
c96a8570 BS |
3208 | case bfd_reloc_undefined: |
3209 | r = info->callbacks->undefined_symbol | |
3210 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
3211 | break; | |
3212 | ||
3213 | case bfd_reloc_outofrange: | |
3214 | msg = _("internal error: out of range error"); | |
3215 | break; | |
3216 | ||
3217 | case bfd_reloc_notsupported: | |
3218 | msg = _("internal error: unsupported relocation error"); | |
3219 | break; | |
3220 | ||
3221 | case bfd_reloc_dangerous: | |
3222 | msg = _("internal error: dangerous relocation"); | |
3223 | break; | |
3224 | ||
3225 | default: | |
3226 | msg = _("internal error: unknown error"); | |
3227 | break; | |
48d502e1 | 3228 | } |
c96a8570 BS |
3229 | |
3230 | if (msg) | |
3231 | r = info->callbacks->warning | |
3232 | (info, msg, name, input_bfd, input_section, rel->r_offset); | |
3233 | ||
3234 | if (! r) | |
3235 | return FALSE; | |
48d502e1 BS |
3236 | } |
3237 | } | |
3238 | ||
3239 | return TRUE; | |
3240 | } | |
3241 | ||
2774f1a6 BS |
3242 | /* Update the relocation information for the relocations of the section |
3243 | being removed. */ | |
3244 | ||
3245 | static bfd_boolean | |
3246 | bfinfdpic_gc_sweep_hook (bfd *abfd, | |
3247 | struct bfd_link_info *info, | |
3248 | asection *sec, | |
3249 | const Elf_Internal_Rela *relocs) | |
3250 | { | |
3251 | Elf_Internal_Shdr *symtab_hdr; | |
3252 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
3253 | const Elf_Internal_Rela *rel; | |
3254 | const Elf_Internal_Rela *rel_end; | |
3255 | struct bfinfdpic_relocs_info *picrel; | |
3256 | ||
3257 | BFD_ASSERT (IS_FDPIC (abfd)); | |
3258 | ||
3259 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3260 | sym_hashes = elf_sym_hashes (abfd); | |
3261 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
3262 | if (!elf_bad_symtab (abfd)) | |
3263 | sym_hashes_end -= symtab_hdr->sh_info; | |
3264 | ||
3265 | rel_end = relocs + sec->reloc_count; | |
3266 | for (rel = relocs; rel < rel_end; rel++) | |
3267 | { | |
3268 | struct elf_link_hash_entry *h; | |
3269 | unsigned long r_symndx; | |
3270 | ||
3271 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3272 | if (r_symndx < symtab_hdr->sh_info) | |
3273 | h = NULL; | |
3274 | else | |
3275 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3276 | ||
3277 | if (h != NULL) | |
3278 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
3279 | abfd, h, | |
3280 | rel->r_addend, NO_INSERT); | |
3281 | else | |
3282 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
3283 | (info), abfd, r_symndx, | |
3284 | rel->r_addend, NO_INSERT); | |
3285 | ||
3286 | if (!picrel) | |
3287 | return TRUE; | |
3288 | ||
3289 | switch (ELF32_R_TYPE (rel->r_info)) | |
3290 | { | |
cb88ce9f BS |
3291 | case R_BFIN_PCREL24: |
3292 | case R_BFIN_PCREL24_JUMP_L: | |
2774f1a6 BS |
3293 | picrel->call--; |
3294 | break; | |
3295 | ||
3296 | case R_BFIN_FUNCDESC_VALUE: | |
3297 | picrel->relocsfdv--; | |
3298 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
3299 | picrel->relocs32++; | |
3300 | /* Fall through. */ | |
3301 | ||
cb88ce9f | 3302 | case R_BFIN_BYTE4_DATA: |
2774f1a6 BS |
3303 | picrel->sym--; |
3304 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
3305 | picrel->relocs32--; | |
3306 | break; | |
3307 | ||
3308 | case R_BFIN_GOT17M4: | |
3309 | picrel->got17m4--; | |
3310 | break; | |
3311 | ||
3312 | case R_BFIN_GOTHI: | |
3313 | case R_BFIN_GOTLO: | |
3314 | picrel->gothilo--; | |
3315 | break; | |
3316 | ||
3317 | case R_BFIN_FUNCDESC_GOT17M4: | |
3318 | picrel->fdgot17m4--; | |
3319 | break; | |
3320 | ||
3321 | case R_BFIN_FUNCDESC_GOTHI: | |
3322 | case R_BFIN_FUNCDESC_GOTLO: | |
3323 | picrel->fdgothilo--; | |
3324 | break; | |
3325 | ||
3326 | case R_BFIN_GOTOFF17M4: | |
3327 | case R_BFIN_GOTOFFHI: | |
3328 | case R_BFIN_GOTOFFLO: | |
3329 | picrel->gotoff--; | |
3330 | break; | |
3331 | ||
3332 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
3333 | picrel->fdgoff17m4--; | |
3334 | break; | |
3335 | ||
3336 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
3337 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
3338 | picrel->fdgoffhilo--; | |
3339 | break; | |
3340 | ||
3341 | case R_BFIN_FUNCDESC: | |
3342 | picrel->fd--; | |
3343 | picrel->relocsfd--; | |
3344 | break; | |
3345 | ||
3346 | default: | |
3347 | break; | |
3348 | } | |
3349 | } | |
3350 | ||
3351 | return TRUE; | |
3352 | } | |
3353 | ||
48d502e1 BS |
3354 | /* We need dynamic symbols for every section, since segments can |
3355 | relocate independently. */ | |
3356 | static bfd_boolean | |
3357 | _bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, | |
51408ec2 AM |
3358 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
3359 | asection *p) | |
48d502e1 BS |
3360 | { |
3361 | switch (elf_section_data (p)->this_hdr.sh_type) | |
3362 | { | |
3363 | case SHT_PROGBITS: | |
3364 | case SHT_NOBITS: | |
3365 | /* If sh_type is yet undecided, assume it could be | |
3366 | SHT_PROGBITS/SHT_NOBITS. */ | |
3367 | case SHT_NULL: | |
3368 | return FALSE; | |
3369 | ||
3370 | /* There shouldn't be section relative relocations | |
3371 | against any other section. */ | |
3372 | default: | |
3373 | return TRUE; | |
3374 | } | |
3375 | } | |
3376 | ||
3377 | /* Create a .got section, as well as its additional info field. This | |
3378 | is almost entirely copied from | |
3379 | elflink.c:_bfd_elf_create_got_section(). */ | |
3380 | ||
3381 | static bfd_boolean | |
3382 | _bfin_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
3383 | { | |
3384 | flagword flags, pltflags; | |
3385 | asection *s; | |
3386 | struct elf_link_hash_entry *h; | |
48d502e1 BS |
3387 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
3388 | int ptralign; | |
48d502e1 BS |
3389 | |
3390 | /* This function may be called more than once. */ | |
3d4d4302 AM |
3391 | s = bfd_get_linker_section (abfd, ".got"); |
3392 | if (s != NULL) | |
48d502e1 BS |
3393 | return TRUE; |
3394 | ||
3395 | /* Machine specific: although pointers are 32-bits wide, we want the | |
3396 | GOT to be aligned to a 64-bit boundary, such that function | |
3397 | descriptors in it can be accessed with 64-bit loads and | |
3398 | stores. */ | |
3399 | ptralign = 3; | |
3400 | ||
3401 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3402 | | SEC_LINKER_CREATED); | |
3403 | pltflags = flags; | |
3404 | ||
3d4d4302 | 3405 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
48d502e1 BS |
3406 | if (s == NULL |
3407 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3408 | return FALSE; | |
3409 | ||
3410 | if (bed->want_got_plt) | |
3411 | { | |
3d4d4302 | 3412 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); |
48d502e1 BS |
3413 | if (s == NULL |
3414 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3415 | return FALSE; | |
3416 | } | |
3417 | ||
3418 | if (bed->want_got_sym) | |
3419 | { | |
3420 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
3421 | (or .got.plt) section. We don't do this in the linker script | |
3422 | because we don't want to define the symbol if we are not creating | |
3423 | a global offset table. */ | |
5592d7ec | 3424 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_"); |
48d502e1 BS |
3425 | elf_hash_table (info)->hgot = h; |
3426 | if (h == NULL) | |
3427 | return FALSE; | |
3428 | ||
3429 | /* Machine-specific: we want the symbol for executables as | |
3430 | well. */ | |
3431 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3432 | return FALSE; | |
3433 | } | |
3434 | ||
3435 | /* The first bit of the global offset table is the header. */ | |
3436 | s->size += bed->got_header_size; | |
3437 | ||
3438 | /* This is the machine-specific part. Create and initialize section | |
3439 | data for the got. */ | |
3440 | if (IS_FDPIC (abfd)) | |
3441 | { | |
3442 | bfinfdpic_got_section (info) = s; | |
3443 | bfinfdpic_relocs_info (info) = htab_try_create (1, | |
3444 | bfinfdpic_relocs_info_hash, | |
3445 | bfinfdpic_relocs_info_eq, | |
3446 | (htab_del) NULL); | |
3447 | if (! bfinfdpic_relocs_info (info)) | |
3448 | return FALSE; | |
3449 | ||
3d4d4302 AM |
3450 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", |
3451 | (flags | SEC_READONLY)); | |
48d502e1 BS |
3452 | if (s == NULL |
3453 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3454 | return FALSE; | |
3455 | ||
3456 | bfinfdpic_gotrel_section (info) = s; | |
3457 | ||
3458 | /* Machine-specific. */ | |
3d4d4302 AM |
3459 | s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", |
3460 | (flags | SEC_READONLY)); | |
48d502e1 BS |
3461 | if (s == NULL |
3462 | || ! bfd_set_section_alignment (abfd, s, 2)) | |
3463 | return FALSE; | |
3464 | ||
3465 | bfinfdpic_gotfixup_section (info) = s; | |
48d502e1 BS |
3466 | } |
3467 | ||
48d502e1 BS |
3468 | pltflags |= SEC_CODE; |
3469 | if (bed->plt_not_loaded) | |
3470 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); | |
3471 | if (bed->plt_readonly) | |
3472 | pltflags |= SEC_READONLY; | |
3473 | ||
3d4d4302 | 3474 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
48d502e1 | 3475 | if (s == NULL |
48d502e1 BS |
3476 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
3477 | return FALSE; | |
3478 | /* Blackfin-specific: remember it. */ | |
3479 | bfinfdpic_plt_section (info) = s; | |
3480 | ||
3481 | if (bed->want_plt_sym) | |
3482 | { | |
3483 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3484 | .plt section. */ | |
48d502e1 BS |
3485 | struct bfd_link_hash_entry *bh = NULL; |
3486 | ||
3487 | if (! (_bfd_generic_link_add_one_symbol | |
5592d7ec | 3488 | (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL, |
48d502e1 BS |
3489 | FALSE, get_elf_backend_data (abfd)->collect, &bh))) |
3490 | return FALSE; | |
3491 | h = (struct elf_link_hash_entry *) bh; | |
3492 | h->def_regular = 1; | |
3493 | h->type = STT_OBJECT; | |
3494 | ||
3495 | if (! info->executable | |
3496 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3497 | return FALSE; | |
3498 | } | |
3499 | ||
3500 | /* Blackfin-specific: we want rel relocations for the plt. */ | |
3d4d4302 AM |
3501 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", |
3502 | flags | SEC_READONLY); | |
48d502e1 | 3503 | if (s == NULL |
48d502e1 BS |
3504 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
3505 | return FALSE; | |
3506 | /* Blackfin-specific: remember it. */ | |
3507 | bfinfdpic_pltrel_section (info) = s; | |
3508 | ||
6a9adeca BS |
3509 | return TRUE; |
3510 | } | |
3511 | ||
3512 | /* Make sure the got and plt sections exist, and that our pointers in | |
3513 | the link hash table point to them. */ | |
3514 | ||
3515 | static bfd_boolean | |
3516 | elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3517 | { | |
3518 | /* This is mostly copied from | |
3519 | elflink.c:_bfd_elf_create_dynamic_sections(). */ | |
3520 | flagword flags; | |
3521 | asection *s; | |
3522 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3523 | ||
3524 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3525 | | SEC_LINKER_CREATED); | |
3526 | ||
3527 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3528 | .rel[a].bss sections. */ | |
3529 | ||
48d502e1 BS |
3530 | /* Blackfin-specific: we want to create the GOT in the Blackfin way. */ |
3531 | if (! _bfin_create_got_section (abfd, info)) | |
3532 | return FALSE; | |
3533 | ||
3534 | /* Blackfin-specific: make sure we created everything we wanted. */ | |
3535 | BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info) | |
3536 | /* && bfinfdpic_gotfixup_section (info) */ | |
3537 | && bfinfdpic_plt_section (info) | |
3538 | && bfinfdpic_pltrel_section (info)); | |
3539 | ||
3540 | if (bed->want_dynbss) | |
3541 | { | |
3542 | /* The .dynbss section is a place to put symbols which are defined | |
3543 | by dynamic objects, are referenced by regular objects, and are | |
3544 | not functions. We must allocate space for them in the process | |
3545 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3546 | initialize them at run time. The linker script puts the .dynbss | |
3547 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
3548 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
3549 | SEC_ALLOC | SEC_LINKER_CREATED); | |
117ed4f8 | 3550 | if (s == NULL) |
48d502e1 BS |
3551 | return FALSE; |
3552 | ||
3553 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3d4d4302 AM |
3554 | normally needed. We need to create it here, though, so that the |
3555 | linker will map it to an output section. We can't just create it | |
3556 | only if we need it, because we will not know whether we need it | |
3557 | until we have seen all the input files, and the first time the | |
3558 | main linker code calls BFD after examining all the input files | |
3559 | (size_dynamic_sections) the input sections have already been | |
3560 | mapped to the output sections. If the section turns out not to | |
3561 | be needed, we can discard it later. We will never need this | |
3562 | section when generating a shared object, since they do not use | |
3563 | copy relocs. */ | |
48d502e1 BS |
3564 | if (! info->shared) |
3565 | { | |
3d4d4302 AM |
3566 | s = bfd_make_section_anyway_with_flags (abfd, |
3567 | ".rela.bss", | |
3568 | flags | SEC_READONLY); | |
48d502e1 | 3569 | if (s == NULL |
48d502e1 BS |
3570 | || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align)) |
3571 | return FALSE; | |
3572 | } | |
3573 | } | |
3574 | ||
3575 | return TRUE; | |
3576 | } | |
3577 | ||
48d502e1 BS |
3578 | /* Compute the total GOT size required by each symbol in each range. |
3579 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3580 | the symbol, an entry pointing to its function descriptor, and a | |
3581 | private function descriptors taking two words. */ | |
3582 | ||
6a9adeca BS |
3583 | static void |
3584 | _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info *entry, | |
3585 | struct _bfinfdpic_dynamic_got_info *dinfo) | |
48d502e1 | 3586 | { |
48d502e1 BS |
3587 | /* Allocate space for a GOT entry pointing to the symbol. */ |
3588 | if (entry->got17m4) | |
3589 | dinfo->got17m4 += 4; | |
3590 | else if (entry->gothilo) | |
3591 | dinfo->gothilo += 4; | |
3592 | else | |
3593 | entry->relocs32--; | |
3594 | entry->relocs32++; | |
3595 | ||
3596 | /* Allocate space for a GOT entry pointing to the function | |
3597 | descriptor. */ | |
3598 | if (entry->fdgot17m4) | |
3599 | dinfo->got17m4 += 4; | |
3600 | else if (entry->fdgothilo) | |
3601 | dinfo->gothilo += 4; | |
3602 | else | |
3603 | entry->relocsfd--; | |
3604 | entry->relocsfd++; | |
3605 | ||
3606 | /* Decide whether we need a PLT entry, a function descriptor in the | |
3607 | GOT, and a lazy PLT entry for this symbol. */ | |
3608 | entry->plt = entry->call | |
3609 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3610 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3611 | entry->privfd = entry->plt | |
3612 | || entry->fdgoff17m4 || entry->fdgoffhilo | |
3613 | || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo) | |
3614 | && (entry->symndx != -1 | |
3615 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); | |
3616 | entry->lazyplt = entry->privfd | |
3617 | && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) | |
3618 | && ! (dinfo->info->flags & DF_BIND_NOW) | |
3619 | && elf_hash_table (dinfo->info)->dynamic_sections_created; | |
3620 | ||
3621 | /* Allocate space for a function descriptor. */ | |
3622 | if (entry->fdgoff17m4) | |
3623 | dinfo->fd17m4 += 8; | |
3624 | else if (entry->privfd && entry->plt) | |
3625 | dinfo->fdplt += 8; | |
3626 | else if (entry->privfd) | |
3627 | dinfo->fdhilo += 8; | |
3628 | else | |
3629 | entry->relocsfdv--; | |
3630 | entry->relocsfdv++; | |
3631 | ||
3632 | if (entry->lazyplt) | |
3633 | dinfo->lzplt += LZPLT_NORMAL_SIZE; | |
6a9adeca BS |
3634 | } |
3635 | ||
3636 | /* Compute the number of dynamic relocations and fixups that a symbol | |
3637 | requires, and add (or subtract) from the grand and per-symbol | |
3638 | totals. */ | |
3639 | ||
3640 | static void | |
3641 | _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info *entry, | |
3642 | struct _bfinfdpic_dynamic_got_info *dinfo, | |
3643 | bfd_boolean subtract) | |
3644 | { | |
3645 | bfd_vma relocs = 0, fixups = 0; | |
48d502e1 BS |
3646 | |
3647 | if (!dinfo->info->executable || dinfo->info->pie) | |
3648 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv; | |
3649 | else | |
3650 | { | |
3651 | if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) | |
3652 | { | |
3653 | if (entry->symndx != -1 | |
3654 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3655 | fixups += entry->relocs32 + 2 * entry->relocsfdv; | |
3656 | } | |
3657 | else | |
3658 | relocs += entry->relocs32 + entry->relocsfdv; | |
3659 | ||
3660 | if (entry->symndx != -1 | |
3661 | || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) | |
3662 | { | |
3663 | if (entry->symndx != -1 | |
3664 | || entry->d.h->root.type != bfd_link_hash_undefweak) | |
3665 | fixups += entry->relocsfd; | |
3666 | } | |
3667 | else | |
3668 | relocs += entry->relocsfd; | |
3669 | } | |
3670 | ||
6a9adeca BS |
3671 | if (subtract) |
3672 | { | |
3673 | relocs = - relocs; | |
3674 | fixups = - fixups; | |
3675 | } | |
3676 | ||
48d502e1 BS |
3677 | entry->dynrelocs += relocs; |
3678 | entry->fixups += fixups; | |
3679 | dinfo->relocs += relocs; | |
3680 | dinfo->fixups += fixups; | |
6a9adeca BS |
3681 | } |
3682 | ||
3683 | /* Compute the total GOT and PLT size required by each symbol in each range. * | |
3684 | Symbols may require up to 4 words in the GOT: an entry pointing to | |
3685 | the symbol, an entry pointing to its function descriptor, and a | |
3686 | private function descriptors taking two words. */ | |
3687 | ||
3688 | static int | |
3689 | _bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_) | |
3690 | { | |
3691 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3692 | struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_; | |
3693 | ||
3694 | _bfinfdpic_count_nontls_entries (entry, dinfo); | |
3695 | ||
3696 | _bfinfdpic_count_relocs_fixups (entry, dinfo, FALSE); | |
48d502e1 BS |
3697 | |
3698 | return 1; | |
3699 | } | |
3700 | ||
3701 | /* This structure is used to assign offsets to got entries, function | |
3702 | descriptors, plt entries and lazy plt entries. */ | |
3703 | ||
3704 | struct _bfinfdpic_dynamic_got_plt_info | |
3705 | { | |
3706 | /* Summary information collected with _bfinfdpic_count_got_plt_entries. */ | |
3707 | struct _bfinfdpic_dynamic_got_info g; | |
3708 | ||
3709 | /* For each addressable range, we record a MAX (positive) and MIN | |
3710 | (negative) value. CUR is used to assign got entries, and it's | |
3711 | incremented from an initial positive value to MAX, then from MIN | |
3712 | to FDCUR (unless FDCUR wraps around first). FDCUR is used to | |
3713 | assign function descriptors, and it's decreased from an initial | |
3714 | non-positive value to MIN, then from MAX down to CUR (unless CUR | |
3715 | wraps around first). All of MIN, MAX, CUR and FDCUR always point | |
3716 | to even words. ODD, if non-zero, indicates an odd word to be | |
3717 | used for the next got entry, otherwise CUR is used and | |
3718 | incremented by a pair of words, wrapping around when it reaches | |
3719 | MAX. FDCUR is decremented (and wrapped) before the next function | |
3720 | descriptor is chosen. FDPLT indicates the number of remaining | |
3721 | slots that can be used for function descriptors used only by PLT | |
3722 | entries. */ | |
3723 | struct _bfinfdpic_dynamic_got_alloc_data | |
3724 | { | |
3725 | bfd_signed_vma max, cur, odd, fdcur, min; | |
3726 | bfd_vma fdplt; | |
3727 | } got17m4, gothilo; | |
3728 | }; | |
3729 | ||
3730 | /* Determine the positive and negative ranges to be used by each | |
3731 | offset range in the GOT. FDCUR and CUR, that must be aligned to a | |
3732 | double-word boundary, are the minimum (negative) and maximum | |
3733 | (positive) GOT offsets already used by previous ranges, except for | |
3734 | an ODD entry that may have been left behind. GOT and FD indicate | |
3735 | the size of GOT entries and function descriptors that must be | |
3736 | placed within the range from -WRAP to WRAP. If there's room left, | |
3737 | up to FDPLT bytes should be reserved for additional function | |
3738 | descriptors. */ | |
3739 | ||
3740 | inline static bfd_signed_vma | |
3741 | _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad, | |
3742 | bfd_signed_vma fdcur, | |
3743 | bfd_signed_vma odd, | |
3744 | bfd_signed_vma cur, | |
3745 | bfd_vma got, | |
3746 | bfd_vma fd, | |
3747 | bfd_vma fdplt, | |
3748 | bfd_vma wrap) | |
3749 | { | |
3750 | bfd_signed_vma wrapmin = -wrap; | |
3751 | ||
3752 | /* Start at the given initial points. */ | |
3753 | gad->fdcur = fdcur; | |
3754 | gad->cur = cur; | |
3755 | ||
3756 | /* If we had an incoming odd word and we have any got entries that | |
3757 | are going to use it, consume it, otherwise leave gad->odd at | |
3758 | zero. We might force gad->odd to zero and return the incoming | |
3759 | odd such that it is used by the next range, but then GOT entries | |
3760 | might appear to be out of order and we wouldn't be able to | |
3761 | shorten the GOT by one word if it turns out to end with an | |
3762 | unpaired GOT entry. */ | |
3763 | if (odd && got) | |
3764 | { | |
3765 | gad->odd = odd; | |
3766 | got -= 4; | |
3767 | odd = 0; | |
3768 | } | |
3769 | else | |
3770 | gad->odd = 0; | |
3771 | ||
3772 | /* If we're left with an unpaired GOT entry, compute its location | |
3773 | such that we can return it. Otherwise, if got doesn't require an | |
3774 | odd number of words here, either odd was already zero in the | |
3775 | block above, or it was set to zero because got was non-zero, or | |
3776 | got was already zero. In the latter case, we want the value of | |
3777 | odd to carry over to the return statement, so we don't want to | |
3778 | reset odd unless the condition below is true. */ | |
3779 | if (got & 4) | |
3780 | { | |
3781 | odd = cur + got; | |
3782 | got += 4; | |
3783 | } | |
3784 | ||
3785 | /* Compute the tentative boundaries of this range. */ | |
3786 | gad->max = cur + got; | |
3787 | gad->min = fdcur - fd; | |
3788 | gad->fdplt = 0; | |
3789 | ||
3790 | /* If function descriptors took too much space, wrap some of them | |
3791 | around. */ | |
3792 | if (gad->min < wrapmin) | |
3793 | { | |
3794 | gad->max += wrapmin - gad->min; | |
3795 | gad->min = wrapmin; | |
3796 | } | |
3797 | /* If there is space left and we have function descriptors | |
3798 | referenced in PLT entries that could take advantage of shorter | |
3799 | offsets, place them here. */ | |
3800 | else if (fdplt && gad->min > wrapmin) | |
3801 | { | |
3802 | bfd_vma fds; | |
3803 | if ((bfd_vma) (gad->min - wrapmin) < fdplt) | |
3804 | fds = gad->min - wrapmin; | |
3805 | else | |
3806 | fds = fdplt; | |
3807 | ||
3808 | fdplt -= fds; | |
3809 | gad->min -= fds; | |
3810 | gad->fdplt += fds; | |
3811 | } | |
3812 | ||
3813 | /* If GOT entries took too much space, wrap some of them around. | |
3814 | This may well cause gad->min to become lower than wrapmin. This | |
3815 | will cause a relocation overflow later on, so we don't have to | |
3816 | report it here . */ | |
3817 | if ((bfd_vma) gad->max > wrap) | |
3818 | { | |
3819 | gad->min -= gad->max - wrap; | |
3820 | gad->max = wrap; | |
3821 | } | |
3822 | /* If there is more space left, try to place some more function | |
3823 | descriptors for PLT entries. */ | |
3824 | else if (fdplt && (bfd_vma) gad->max < wrap) | |
3825 | { | |
3826 | bfd_vma fds; | |
3827 | if ((bfd_vma) (wrap - gad->max) < fdplt) | |
3828 | fds = wrap - gad->max; | |
3829 | else | |
3830 | fds = fdplt; | |
3831 | ||
3832 | fdplt -= fds; | |
3833 | gad->max += fds; | |
3834 | gad->fdplt += fds; | |
3835 | } | |
3836 | ||
3837 | /* If odd was initially computed as an offset past the wrap point, | |
3838 | wrap it around. */ | |
3839 | if (odd > gad->max) | |
3840 | odd = gad->min + odd - gad->max; | |
3841 | ||
3842 | /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed | |
3843 | before returning, so do it here too. This guarantees that, | |
3844 | should cur and fdcur meet at the wrap point, they'll both be | |
3845 | equal to min. */ | |
3846 | if (gad->cur == gad->max) | |
3847 | gad->cur = gad->min; | |
3848 | ||
3849 | return odd; | |
3850 | } | |
3851 | ||
3852 | /* Compute the location of the next GOT entry, given the allocation | |
3853 | data for a range. */ | |
3854 | ||
3855 | inline static bfd_signed_vma | |
3856 | _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3857 | { | |
3858 | bfd_signed_vma ret; | |
3859 | ||
3860 | if (gad->odd) | |
3861 | { | |
3862 | /* If there was an odd word left behind, use it. */ | |
3863 | ret = gad->odd; | |
3864 | gad->odd = 0; | |
3865 | } | |
3866 | else | |
3867 | { | |
3868 | /* Otherwise, use the word pointed to by cur, reserve the next | |
3869 | as an odd word, and skip to the next pair of words, possibly | |
3870 | wrapping around. */ | |
3871 | ret = gad->cur; | |
3872 | gad->odd = gad->cur + 4; | |
3873 | gad->cur += 8; | |
3874 | if (gad->cur == gad->max) | |
3875 | gad->cur = gad->min; | |
3876 | } | |
3877 | ||
3878 | return ret; | |
3879 | } | |
3880 | ||
3881 | /* Compute the location of the next function descriptor entry in the | |
3882 | GOT, given the allocation data for a range. */ | |
3883 | ||
3884 | inline static bfd_signed_vma | |
3885 | _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad) | |
3886 | { | |
3887 | /* If we're at the bottom, wrap around, and only then allocate the | |
3888 | next pair of words. */ | |
3889 | if (gad->fdcur == gad->min) | |
3890 | gad->fdcur = gad->max; | |
3891 | return gad->fdcur -= 8; | |
3892 | } | |
3893 | ||
3894 | /* Assign GOT offsets for every GOT entry and function descriptor. | |
3895 | Doing everything in a single pass is tricky. */ | |
3896 | ||
3897 | static int | |
3898 | _bfinfdpic_assign_got_entries (void **entryp, void *info_) | |
3899 | { | |
3900 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3901 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3902 | ||
3903 | if (entry->got17m4) | |
3904 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3905 | else if (entry->gothilo) | |
3906 | entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3907 | ||
3908 | if (entry->fdgot17m4) | |
3909 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4); | |
3910 | else if (entry->fdgothilo) | |
3911 | entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo); | |
3912 | ||
3913 | if (entry->fdgoff17m4) | |
3914 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3915 | else if (entry->plt && dinfo->got17m4.fdplt) | |
3916 | { | |
3917 | dinfo->got17m4.fdplt -= 8; | |
3918 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3919 | } | |
3920 | else if (entry->plt) | |
3921 | { | |
3922 | dinfo->gothilo.fdplt -= 8; | |
3923 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3924 | } | |
3925 | else if (entry->privfd) | |
3926 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3927 | ||
3928 | return 1; | |
3929 | } | |
3930 | ||
3931 | /* Assign GOT offsets to private function descriptors used by PLT | |
3932 | entries (or referenced by 32-bit offsets), as well as PLT entries | |
3933 | and lazy PLT entries. */ | |
3934 | ||
3935 | static int | |
3936 | _bfinfdpic_assign_plt_entries (void **entryp, void *info_) | |
3937 | { | |
3938 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3939 | struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_; | |
3940 | ||
3941 | /* If this symbol requires a local function descriptor, allocate | |
3942 | one. */ | |
3943 | if (entry->privfd && entry->fd_entry == 0) | |
3944 | { | |
3945 | if (dinfo->got17m4.fdplt) | |
3946 | { | |
3947 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4); | |
3948 | dinfo->got17m4.fdplt -= 8; | |
3949 | } | |
3950 | else | |
3951 | { | |
3952 | BFD_ASSERT (dinfo->gothilo.fdplt); | |
3953 | entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo); | |
3954 | dinfo->gothilo.fdplt -= 8; | |
3955 | } | |
3956 | } | |
3957 | ||
3958 | if (entry->plt) | |
3959 | { | |
3960 | int size; | |
3961 | ||
3962 | /* We use the section's raw size to mark the location of the | |
3963 | next PLT entry. */ | |
3964 | entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size; | |
3965 | ||
3966 | /* Figure out the length of this PLT entry based on the | |
3967 | addressing mode we need to reach the function descriptor. */ | |
3968 | BFD_ASSERT (entry->fd_entry); | |
3969 | if (entry->fd_entry >= -(1 << (18 - 1)) | |
3970 | && entry->fd_entry + 4 < (1 << (18 - 1))) | |
3971 | size = 10; | |
3972 | else | |
3973 | size = 16; | |
3974 | ||
3975 | bfinfdpic_plt_section (dinfo->g.info)->size += size; | |
3976 | } | |
3977 | ||
3978 | if (entry->lazyplt) | |
3979 | { | |
3980 | entry->lzplt_entry = dinfo->g.lzplt; | |
3981 | dinfo->g.lzplt += LZPLT_NORMAL_SIZE; | |
3982 | /* If this entry is the one that gets the resolver stub, account | |
3983 | for the additional instruction. */ | |
3984 | if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE | |
3985 | == BFINFDPIC_LZPLT_RESOLV_LOC) | |
3986 | dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA; | |
3987 | } | |
3988 | ||
3989 | return 1; | |
3990 | } | |
3991 | ||
6a9adeca BS |
3992 | /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and |
3993 | _bfinfdpic_assign_plt_entries. */ | |
3994 | ||
3995 | static int | |
3996 | _bfinfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) | |
3997 | { | |
3998 | struct bfinfdpic_relocs_info *entry = *entryp; | |
3999 | ||
4000 | entry->got_entry = 0; | |
4001 | entry->fdgot_entry = 0; | |
4002 | entry->fd_entry = 0; | |
4003 | entry->plt_entry = (bfd_vma)-1; | |
4004 | entry->lzplt_entry = (bfd_vma)-1; | |
4005 | ||
4006 | return 1; | |
4007 | } | |
4008 | ||
48d502e1 BS |
4009 | /* Follow indirect and warning hash entries so that each got entry |
4010 | points to the final symbol definition. P must point to a pointer | |
4011 | to the hash table we're traversing. Since this traversal may | |
4012 | modify the hash table, we set this pointer to NULL to indicate | |
4013 | we've made a potentially-destructive change to the hash table, so | |
4014 | the traversal must be restarted. */ | |
4015 | static int | |
4016 | _bfinfdpic_resolve_final_relocs_info (void **entryp, void *p) | |
4017 | { | |
4018 | struct bfinfdpic_relocs_info *entry = *entryp; | |
4019 | htab_t *htab = p; | |
4020 | ||
4021 | if (entry->symndx == -1) | |
4022 | { | |
4023 | struct elf_link_hash_entry *h = entry->d.h; | |
4024 | struct bfinfdpic_relocs_info *oentry; | |
4025 | ||
4026 | while (h->root.type == bfd_link_hash_indirect | |
4027 | || h->root.type == bfd_link_hash_warning) | |
4028 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
4029 | ||
4030 | if (entry->d.h == h) | |
4031 | return 1; | |
4032 | ||
4033 | oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, | |
4034 | NO_INSERT); | |
4035 | ||
4036 | if (oentry) | |
4037 | { | |
4038 | /* Merge the two entries. */ | |
4039 | bfinfdpic_pic_merge_early_relocs_info (oentry, entry); | |
4040 | htab_clear_slot (*htab, entryp); | |
4041 | return 1; | |
4042 | } | |
4043 | ||
4044 | entry->d.h = h; | |
4045 | ||
4046 | /* If we can't find this entry with the new bfd hash, re-insert | |
4047 | it, and get the traversal restarted. */ | |
4048 | if (! htab_find (*htab, entry)) | |
4049 | { | |
4050 | htab_clear_slot (*htab, entryp); | |
4051 | entryp = htab_find_slot (*htab, entry, INSERT); | |
4052 | if (! *entryp) | |
4053 | *entryp = entry; | |
4054 | /* Abort the traversal, since the whole table may have | |
4055 | moved, and leave it up to the parent to restart the | |
4056 | process. */ | |
4057 | *(htab_t *)p = NULL; | |
4058 | return 0; | |
4059 | } | |
4060 | } | |
4061 | ||
4062 | return 1; | |
4063 | } | |
4064 | ||
6a9adeca BS |
4065 | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
4066 | section and the rofixup section. Assign locations for GOT and PLT | |
4067 | entries. */ | |
48d502e1 BS |
4068 | |
4069 | static bfd_boolean | |
6a9adeca BS |
4070 | _bfinfdpic_size_got_plt (bfd *output_bfd, |
4071 | struct _bfinfdpic_dynamic_got_plt_info *gpinfop) | |
48d502e1 | 4072 | { |
48d502e1 BS |
4073 | bfd_signed_vma odd; |
4074 | bfd_vma limit; | |
6a9adeca BS |
4075 | struct bfd_link_info *info = gpinfop->g.info; |
4076 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
48d502e1 | 4077 | |
6a9adeca BS |
4078 | memcpy (bfinfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
4079 | sizeof (gpinfop->g)); | |
48d502e1 BS |
4080 | |
4081 | odd = 12; | |
4082 | /* Compute the total size taken by entries in the 18-bit range, | |
4083 | to tell how many PLT function descriptors we can bring into it | |
4084 | without causing it to overflow. */ | |
6a9adeca | 4085 | limit = odd + gpinfop->g.got17m4 + gpinfop->g.fd17m4; |
48d502e1 BS |
4086 | if (limit < (bfd_vma)1 << 18) |
4087 | limit = ((bfd_vma)1 << 18) - limit; | |
4088 | else | |
4089 | limit = 0; | |
6a9adeca BS |
4090 | if (gpinfop->g.fdplt < limit) |
4091 | limit = gpinfop->g.fdplt; | |
48d502e1 BS |
4092 | |
4093 | /* Determine the ranges of GOT offsets that we can use for each | |
4094 | range of addressing modes. */ | |
6a9adeca | 4095 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->got17m4, |
48d502e1 BS |
4096 | 0, |
4097 | odd, | |
4098 | 16, | |
6a9adeca BS |
4099 | gpinfop->g.got17m4, |
4100 | gpinfop->g.fd17m4, | |
48d502e1 BS |
4101 | limit, |
4102 | (bfd_vma)1 << (18-1)); | |
6a9adeca BS |
4103 | odd = _bfinfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
4104 | gpinfop->got17m4.min, | |
48d502e1 | 4105 | odd, |
6a9adeca BS |
4106 | gpinfop->got17m4.max, |
4107 | gpinfop->g.gothilo, | |
4108 | gpinfop->g.fdhilo, | |
4109 | gpinfop->g.fdplt - gpinfop->got17m4.fdplt, | |
48d502e1 BS |
4110 | (bfd_vma)1 << (32-1)); |
4111 | ||
4112 | /* Now assign (most) GOT offsets. */ | |
4113 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries, | |
6a9adeca | 4114 | gpinfop); |
48d502e1 | 4115 | |
6a9adeca BS |
4116 | bfinfdpic_got_section (info)->size = gpinfop->gothilo.max |
4117 | - gpinfop->gothilo.min | |
48d502e1 BS |
4118 | /* If an odd word is the last word of the GOT, we don't need this |
4119 | word to be part of the GOT. */ | |
6a9adeca | 4120 | - (odd + 4 == gpinfop->gothilo.max ? 4 : 0); |
48d502e1 BS |
4121 | if (bfinfdpic_got_section (info)->size == 0) |
4122 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
4123 | else if (bfinfdpic_got_section (info)->size == 12 | |
4124 | && ! elf_hash_table (info)->dynamic_sections_created) | |
4125 | { | |
4126 | bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE; | |
4127 | bfinfdpic_got_section (info)->size = 0; | |
4128 | } | |
4129 | else | |
4130 | { | |
4131 | bfinfdpic_got_section (info)->contents = | |
4132 | (bfd_byte *) bfd_zalloc (dynobj, | |
4133 | bfinfdpic_got_section (info)->size); | |
4134 | if (bfinfdpic_got_section (info)->contents == NULL) | |
4135 | return FALSE; | |
4136 | } | |
4137 | ||
4138 | if (elf_hash_table (info)->dynamic_sections_created) | |
4139 | /* Subtract the number of lzplt entries, since those will generate | |
4140 | relocations in the pltrel section. */ | |
4141 | bfinfdpic_gotrel_section (info)->size = | |
6a9adeca | 4142 | (gpinfop->g.relocs - gpinfop->g.lzplt / LZPLT_NORMAL_SIZE) |
48d502e1 BS |
4143 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
4144 | else | |
6a9adeca | 4145 | BFD_ASSERT (gpinfop->g.relocs == 0); |
48d502e1 BS |
4146 | if (bfinfdpic_gotrel_section (info)->size == 0) |
4147 | bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; | |
4148 | else | |
4149 | { | |
4150 | bfinfdpic_gotrel_section (info)->contents = | |
4151 | (bfd_byte *) bfd_zalloc (dynobj, | |
4152 | bfinfdpic_gotrel_section (info)->size); | |
4153 | if (bfinfdpic_gotrel_section (info)->contents == NULL) | |
4154 | return FALSE; | |
4155 | } | |
4156 | ||
6a9adeca | 4157 | bfinfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
48d502e1 BS |
4158 | if (bfinfdpic_gotfixup_section (info)->size == 0) |
4159 | bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; | |
4160 | else | |
4161 | { | |
4162 | bfinfdpic_gotfixup_section (info)->contents = | |
4163 | (bfd_byte *) bfd_zalloc (dynobj, | |
4164 | bfinfdpic_gotfixup_section (info)->size); | |
4165 | if (bfinfdpic_gotfixup_section (info)->contents == NULL) | |
4166 | return FALSE; | |
4167 | } | |
4168 | ||
4169 | if (elf_hash_table (info)->dynamic_sections_created) | |
d3e32c2e JZ |
4170 | bfinfdpic_pltrel_section (info)->size = |
4171 | gpinfop->g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel; | |
4172 | if (bfinfdpic_pltrel_section (info)->size == 0) | |
4173 | bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; | |
4174 | else | |
48d502e1 | 4175 | { |
d3e32c2e JZ |
4176 | bfinfdpic_pltrel_section (info)->contents = |
4177 | (bfd_byte *) bfd_zalloc (dynobj, | |
4178 | bfinfdpic_pltrel_section (info)->size); | |
4179 | if (bfinfdpic_pltrel_section (info)->contents == NULL) | |
4180 | return FALSE; | |
48d502e1 BS |
4181 | } |
4182 | ||
4183 | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, | |
4184 | such that there's room for the additional instruction needed to | |
4185 | call the resolver. Since _bfinfdpic_assign_got_entries didn't | |
4186 | account for them, our block size is 4 bytes smaller than the real | |
4187 | block size. */ | |
4188 | if (elf_hash_table (info)->dynamic_sections_created) | |
4189 | { | |
6a9adeca BS |
4190 | bfinfdpic_plt_section (info)->size = gpinfop->g.lzplt |
4191 | + ((gpinfop->g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE) | |
48d502e1 BS |
4192 | / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA); |
4193 | } | |
4194 | ||
4195 | /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to | |
4196 | actually assign lazy PLT entries addresses. */ | |
6a9adeca | 4197 | gpinfop->g.lzplt = 0; |
48d502e1 BS |
4198 | |
4199 | /* Save information that we're going to need to generate GOT and PLT | |
4200 | entries. */ | |
6a9adeca | 4201 | bfinfdpic_got_initial_offset (info) = -gpinfop->gothilo.min; |
48d502e1 BS |
4202 | |
4203 | if (get_elf_backend_data (output_bfd)->want_got_sym) | |
4204 | elf_hash_table (info)->hgot->root.u.def.value | |
6a9adeca | 4205 | = bfinfdpic_got_initial_offset (info); |
48d502e1 BS |
4206 | |
4207 | if (elf_hash_table (info)->dynamic_sections_created) | |
4208 | bfinfdpic_plt_initial_offset (info) = | |
4209 | bfinfdpic_plt_section (info)->size; | |
4210 | ||
4211 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries, | |
6a9adeca | 4212 | gpinfop); |
48d502e1 BS |
4213 | |
4214 | /* Allocate the PLT section contents only after | |
4215 | _bfinfdpic_assign_plt_entries has a chance to add the size of the | |
4216 | non-lazy PLT entries. */ | |
d3e32c2e JZ |
4217 | if (bfinfdpic_plt_section (info)->size == 0) |
4218 | bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE; | |
4219 | else | |
48d502e1 | 4220 | { |
d3e32c2e JZ |
4221 | bfinfdpic_plt_section (info)->contents = |
4222 | (bfd_byte *) bfd_zalloc (dynobj, | |
4223 | bfinfdpic_plt_section (info)->size); | |
4224 | if (bfinfdpic_plt_section (info)->contents == NULL) | |
4225 | return FALSE; | |
48d502e1 BS |
4226 | } |
4227 | ||
6a9adeca BS |
4228 | return TRUE; |
4229 | } | |
4230 | ||
4231 | /* Set the sizes of the dynamic sections. */ | |
4232 | ||
4233 | static bfd_boolean | |
4234 | elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd, | |
4235 | struct bfd_link_info *info) | |
4236 | { | |
4237 | struct elf_link_hash_table *htab; | |
4238 | bfd *dynobj; | |
4239 | asection *s; | |
4240 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4241 | ||
4242 | htab = elf_hash_table (info); | |
4243 | dynobj = htab->dynobj; | |
4244 | BFD_ASSERT (dynobj != NULL); | |
4245 | ||
4246 | if (htab->dynamic_sections_created) | |
4247 | { | |
4248 | /* Set the contents of the .interp section to the interpreter. */ | |
4249 | if (info->executable) | |
4250 | { | |
3d4d4302 | 4251 | s = bfd_get_linker_section (dynobj, ".interp"); |
6a9adeca BS |
4252 | BFD_ASSERT (s != NULL); |
4253 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4254 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; | |
4255 | } | |
4256 | } | |
4257 | ||
4258 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4259 | gpinfo.g.info = info; | |
4260 | ||
4261 | for (;;) | |
4262 | { | |
4263 | htab_t relocs = bfinfdpic_relocs_info (info); | |
4264 | ||
4265 | htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs); | |
4266 | ||
4267 | if (relocs == bfinfdpic_relocs_info (info)) | |
4268 | break; | |
4269 | } | |
4270 | ||
4271 | htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries, | |
4272 | &gpinfo.g); | |
4273 | ||
4274 | /* Allocate space to save the summary information, we're going to | |
4275 | use it if we're doing relaxations. */ | |
4276 | bfinfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); | |
4277 | ||
4278 | if (!_bfinfdpic_size_got_plt (output_bfd, &gpinfo)) | |
4279 | return FALSE; | |
4280 | ||
48d502e1 BS |
4281 | if (elf_hash_table (info)->dynamic_sections_created) |
4282 | { | |
4283 | if (bfinfdpic_got_section (info)->size) | |
4284 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)) | |
4285 | return FALSE; | |
4286 | ||
4287 | if (bfinfdpic_pltrel_section (info)->size) | |
4288 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4289 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL) | |
4290 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) | |
4291 | return FALSE; | |
4292 | ||
4293 | if (bfinfdpic_gotrel_section (info)->size) | |
4294 | if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0) | |
4295 | || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0) | |
4296 | || !_bfd_elf_add_dynamic_entry (info, DT_RELENT, | |
4297 | sizeof (Elf32_External_Rel))) | |
4298 | return FALSE; | |
4299 | } | |
4300 | ||
3d4d4302 | 4301 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
153d38f6 JZ |
4302 | if (s && s->size == 0) |
4303 | s->flags |= SEC_EXCLUDE; | |
4304 | ||
3d4d4302 | 4305 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
153d38f6 JZ |
4306 | if (s && s->size == 0) |
4307 | s->flags |= SEC_EXCLUDE; | |
4308 | ||
48d502e1 BS |
4309 | return TRUE; |
4310 | } | |
4311 | ||
4312 | static bfd_boolean | |
4313 | elf32_bfinfdpic_always_size_sections (bfd *output_bfd, | |
4314 | struct bfd_link_info *info) | |
4315 | { | |
4316 | if (!info->relocatable) | |
4317 | { | |
4318 | struct elf_link_hash_entry *h; | |
48d502e1 BS |
4319 | |
4320 | /* Force a PT_GNU_STACK segment to be created. */ | |
4321 | if (! elf_tdata (output_bfd)->stack_flags) | |
4322 | elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; | |
4323 | ||
4324 | /* Define __stacksize if it's not defined yet. */ | |
4325 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", | |
4326 | FALSE, FALSE, FALSE); | |
4327 | if (! h || h->root.type != bfd_link_hash_defined | |
4328 | || h->type != STT_OBJECT | |
4329 | || !h->def_regular) | |
4330 | { | |
4331 | struct bfd_link_hash_entry *bh = NULL; | |
4332 | ||
4333 | if (!(_bfd_generic_link_add_one_symbol | |
4334 | (info, output_bfd, "__stacksize", | |
4335 | BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE, | |
4336 | (const char *) NULL, FALSE, | |
4337 | get_elf_backend_data (output_bfd)->collect, &bh))) | |
4338 | return FALSE; | |
4339 | ||
4340 | h = (struct elf_link_hash_entry *) bh; | |
4341 | h->def_regular = 1; | |
4342 | h->type = STT_OBJECT; | |
4343 | } | |
48d502e1 BS |
4344 | } |
4345 | ||
4346 | return TRUE; | |
4347 | } | |
4348 | ||
6a9adeca BS |
4349 | /* Check whether any of the relocations was optimized away, and |
4350 | subtract it from the relocation or fixup count. */ | |
4351 | static bfd_boolean | |
4352 | _bfinfdpic_check_discarded_relocs (bfd *abfd, asection *sec, | |
4353 | struct bfd_link_info *info, | |
4354 | ||
4355 | bfd_boolean *changed) | |
4356 | { | |
4357 | Elf_Internal_Shdr *symtab_hdr; | |
4358 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4359 | Elf_Internal_Rela *rel, *erel; | |
4360 | ||
4361 | if ((sec->flags & SEC_RELOC) == 0 | |
4362 | || sec->reloc_count == 0) | |
4363 | return TRUE; | |
4364 | ||
4365 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4366 | sym_hashes = elf_sym_hashes (abfd); | |
4367 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); | |
4368 | if (!elf_bad_symtab (abfd)) | |
4369 | sym_hashes_end -= symtab_hdr->sh_info; | |
4370 | ||
4371 | rel = elf_section_data (sec)->relocs; | |
4372 | ||
4373 | /* Now examine each relocation. */ | |
4374 | for (erel = rel + sec->reloc_count; rel < erel; rel++) | |
4375 | { | |
4376 | struct elf_link_hash_entry *h; | |
4377 | unsigned long r_symndx; | |
4378 | struct bfinfdpic_relocs_info *picrel; | |
4379 | struct _bfinfdpic_dynamic_got_info *dinfo; | |
4380 | ||
4381 | if (ELF32_R_TYPE (rel->r_info) != R_BFIN_BYTE4_DATA | |
4382 | && ELF32_R_TYPE (rel->r_info) != R_BFIN_FUNCDESC) | |
4383 | continue; | |
4384 | ||
4385 | if (_bfd_elf_section_offset (sec->output_section->owner, | |
4386 | info, sec, rel->r_offset) | |
4387 | != (bfd_vma)-1) | |
4388 | continue; | |
4389 | ||
4390 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4391 | if (r_symndx < symtab_hdr->sh_info) | |
4392 | h = NULL; | |
4393 | else | |
4394 | { | |
4395 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4396 | while (h->root.type == bfd_link_hash_indirect | |
4397 | || h->root.type == bfd_link_hash_warning) | |
4398 | h = (struct elf_link_hash_entry *)h->root.u.i.link; | |
4399 | } | |
4400 | ||
4401 | if (h != NULL) | |
4402 | picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4403 | abfd, h, | |
4404 | rel->r_addend, NO_INSERT); | |
4405 | else | |
4406 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info), | |
4407 | abfd, r_symndx, | |
4408 | rel->r_addend, NO_INSERT); | |
4409 | ||
4410 | if (! picrel) | |
4411 | return FALSE; | |
4412 | ||
4413 | *changed = TRUE; | |
4414 | dinfo = bfinfdpic_dynamic_got_plt_info (info); | |
4415 | ||
4416 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, TRUE); | |
4417 | if (ELF32_R_TYPE (rel->r_info) == R_BFIN_BYTE4_DATA) | |
4418 | picrel->relocs32--; | |
4419 | else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */ | |
4420 | picrel->relocsfd--; | |
4421 | _bfinfdpic_count_relocs_fixups (picrel, dinfo, FALSE); | |
4422 | } | |
4423 | ||
4424 | return TRUE; | |
4425 | } | |
4426 | ||
4427 | static bfd_boolean | |
4428 | bfinfdpic_elf_discard_info (bfd *ibfd, | |
4429 | struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, | |
4430 | struct bfd_link_info *info) | |
4431 | { | |
4432 | bfd_boolean changed = FALSE; | |
4433 | asection *s; | |
4434 | bfd *obfd = NULL; | |
4435 | ||
4436 | /* Account for relaxation of .eh_frame section. */ | |
4437 | for (s = ibfd->sections; s; s = s->next) | |
dbaa2011 | 4438 | if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
6a9adeca BS |
4439 | { |
4440 | if (!_bfinfdpic_check_discarded_relocs (ibfd, s, info, &changed)) | |
4441 | return FALSE; | |
4442 | obfd = s->output_section->owner; | |
4443 | } | |
4444 | ||
4445 | if (changed) | |
4446 | { | |
4447 | struct _bfinfdpic_dynamic_got_plt_info gpinfo; | |
4448 | ||
4449 | memset (&gpinfo, 0, sizeof (gpinfo)); | |
4450 | memcpy (&gpinfo.g, bfinfdpic_dynamic_got_plt_info (info), | |
4451 | sizeof (gpinfo.g)); | |
4452 | ||
4453 | /* Clear GOT and PLT assignments. */ | |
4454 | htab_traverse (bfinfdpic_relocs_info (info), | |
4455 | _bfinfdpic_reset_got_plt_entries, | |
4456 | NULL); | |
4457 | ||
4458 | if (!_bfinfdpic_size_got_plt (obfd, &gpinfo)) | |
4459 | return FALSE; | |
4460 | } | |
4461 | ||
4462 | return TRUE; | |
4463 | } | |
4464 | ||
48d502e1 | 4465 | static bfd_boolean |
e36284ab AM |
4466 | elf32_bfinfdpic_modify_program_headers (bfd *output_bfd, |
4467 | struct bfd_link_info *info) | |
48d502e1 | 4468 | { |
e36284ab | 4469 | struct elf_obj_tdata *tdata = elf_tdata (output_bfd); |
48d502e1 | 4470 | struct elf_segment_map *m; |
e36284ab | 4471 | Elf_Internal_Phdr *p; |
48d502e1 BS |
4472 | |
4473 | /* objcopy and strip preserve what's already there using | |
4474 | elf32_bfinfdpic_copy_private_bfd_data (). */ | |
4475 | if (! info) | |
4476 | return TRUE; | |
4477 | ||
e36284ab | 4478 | for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++) |
48d502e1 BS |
4479 | if (m->p_type == PT_GNU_STACK) |
4480 | break; | |
4481 | ||
4482 | if (m) | |
4483 | { | |
48d502e1 BS |
4484 | struct elf_link_hash_entry *h; |
4485 | ||
e36284ab AM |
4486 | /* Obtain the pointer to the __stacksize symbol. */ |
4487 | h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize", | |
4488 | FALSE, FALSE, FALSE); | |
4489 | if (h) | |
48d502e1 | 4490 | { |
48d502e1 BS |
4491 | while (h->root.type == bfd_link_hash_indirect |
4492 | || h->root.type == bfd_link_hash_warning) | |
e36284ab | 4493 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
48d502e1 | 4494 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); |
e36284ab | 4495 | } |
48d502e1 | 4496 | |
e36284ab AM |
4497 | /* Set the header p_memsz from the symbol value. We |
4498 | intentionally ignore the symbol section. */ | |
4499 | if (h && h->root.type == bfd_link_hash_defined) | |
4500 | p->p_memsz = h->root.u.def.value; | |
4501 | else | |
4502 | p->p_memsz = DEFAULT_STACK_SIZE; | |
48d502e1 | 4503 | |
e36284ab | 4504 | p->p_align = 8; |
48d502e1 BS |
4505 | } |
4506 | ||
4507 | return TRUE; | |
4508 | } | |
4509 | ||
4510 | static bfd_boolean | |
4511 | elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd, | |
4512 | struct bfd_link_info *info) | |
4513 | { | |
4514 | bfd *dynobj; | |
4515 | asection *sdyn; | |
4516 | ||
4517 | dynobj = elf_hash_table (info)->dynobj; | |
4518 | ||
4519 | if (bfinfdpic_got_section (info)) | |
4520 | { | |
4521 | BFD_ASSERT (bfinfdpic_gotrel_section (info)->size | |
4522 | == (bfinfdpic_gotrel_section (info)->reloc_count | |
4523 | * sizeof (Elf32_External_Rel))); | |
4524 | ||
4525 | if (bfinfdpic_gotfixup_section (info)) | |
4526 | { | |
4527 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; | |
4528 | bfd_vma got_value = hgot->root.u.def.value | |
4529 | + hgot->root.u.def.section->output_section->vma | |
4530 | + hgot->root.u.def.section->output_offset; | |
4531 | ||
4532 | _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info), | |
4533 | got_value, 0); | |
4534 | ||
4535 | if (bfinfdpic_gotfixup_section (info)->size | |
4536 | != (bfinfdpic_gotfixup_section (info)->reloc_count * 4)) | |
0f64bb02 CM |
4537 | { |
4538 | (*_bfd_error_handler) | |
48d502e1 | 4539 | ("LINKER BUG: .rofixup section size mismatch"); |
0f64bb02 CM |
4540 | return FALSE; |
4541 | } | |
4542 | } | |
4543 | } | |
48d502e1 BS |
4544 | if (elf_hash_table (info)->dynamic_sections_created) |
4545 | { | |
4546 | BFD_ASSERT (bfinfdpic_pltrel_section (info)->size | |
4547 | == (bfinfdpic_pltrel_section (info)->reloc_count | |
4548 | * sizeof (Elf32_External_Rel))); | |
4549 | } | |
4550 | ||
3d4d4302 | 4551 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
48d502e1 BS |
4552 | |
4553 | if (elf_hash_table (info)->dynamic_sections_created) | |
4554 | { | |
4555 | Elf32_External_Dyn * dyncon; | |
4556 | Elf32_External_Dyn * dynconend; | |
4557 | ||
4558 | BFD_ASSERT (sdyn != NULL); | |
4559 | ||
4560 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4561 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
4562 | ||
4563 | for (; dyncon < dynconend; dyncon++) | |
4564 | { | |
4565 | Elf_Internal_Dyn dyn; | |
4566 | ||
4567 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4568 | ||
4569 | switch (dyn.d_tag) | |
4570 | { | |
4571 | default: | |
4572 | break; | |
4573 | ||
4574 | case DT_PLTGOT: | |
4575 | dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma | |
4576 | + bfinfdpic_got_section (info)->output_offset | |
4577 | + bfinfdpic_got_initial_offset (info); | |
4578 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4579 | break; | |
4580 | ||
4581 | case DT_JMPREL: | |
4582 | dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info) | |
4583 | ->output_section->vma | |
4584 | + bfinfdpic_pltrel_section (info)->output_offset; | |
4585 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4586 | break; | |
4587 | ||
4588 | case DT_PLTRELSZ: | |
4589 | dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size; | |
4590 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4591 | break; | |
4592 | } | |
4593 | } | |
4594 | } | |
4595 | ||
4596 | return TRUE; | |
4597 | } | |
4598 | ||
4599 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4600 | regular object. */ | |
4601 | ||
4602 | static bfd_boolean | |
4603 | elf32_bfinfdpic_adjust_dynamic_symbol | |
51408ec2 AM |
4604 | (struct bfd_link_info *info, |
4605 | struct elf_link_hash_entry *h) | |
48d502e1 BS |
4606 | { |
4607 | bfd * dynobj; | |
4608 | ||
4609 | dynobj = elf_hash_table (info)->dynobj; | |
4610 | ||
4611 | /* Make sure we know what is going on here. */ | |
4612 | BFD_ASSERT (dynobj != NULL | |
4613 | && (h->u.weakdef != NULL | |
4614 | || (h->def_dynamic | |
4615 | && h->ref_regular | |
4616 | && !h->def_regular))); | |
4617 | ||
4618 | /* If this is a weak symbol, and there is a real definition, the | |
4619 | processor independent code will have arranged for us to see the | |
4620 | real definition first, and we can just use the same value. */ | |
4621 | if (h->u.weakdef != NULL) | |
4622 | { | |
4623 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
4624 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4625 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4626 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
4627 | } | |
0f64bb02 CM |
4628 | |
4629 | return TRUE; | |
4630 | } | |
4631 | ||
48d502e1 BS |
4632 | /* Perform any actions needed for dynamic symbols. */ |
4633 | ||
4634 | static bfd_boolean | |
4635 | elf32_bfinfdpic_finish_dynamic_symbol | |
4636 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4637 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4638 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, | |
4639 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) | |
0f64bb02 | 4640 | { |
48d502e1 BS |
4641 | return TRUE; |
4642 | } | |
0f64bb02 | 4643 | |
48d502e1 BS |
4644 | /* Decide whether to attempt to turn absptr or lsda encodings in |
4645 | shared libraries into pcrel within the given input section. */ | |
0f64bb02 | 4646 | |
48d502e1 BS |
4647 | static bfd_boolean |
4648 | bfinfdpic_elf_use_relative_eh_frame | |
4649 | (bfd *input_bfd ATTRIBUTE_UNUSED, | |
4650 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4651 | asection *eh_frame_section ATTRIBUTE_UNUSED) | |
4652 | { | |
4653 | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ | |
4654 | return FALSE; | |
4655 | } | |
0f64bb02 | 4656 | |
48d502e1 | 4657 | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
0f64bb02 | 4658 | |
48d502e1 BS |
4659 | static bfd_byte |
4660 | bfinfdpic_elf_encode_eh_address (bfd *abfd, | |
4661 | struct bfd_link_info *info, | |
4662 | asection *osec, bfd_vma offset, | |
4663 | asection *loc_sec, bfd_vma loc_offset, | |
4664 | bfd_vma *encoded) | |
4665 | { | |
4666 | struct elf_link_hash_entry *h; | |
0f64bb02 | 4667 | |
48d502e1 BS |
4668 | h = elf_hash_table (info)->hgot; |
4669 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); | |
4670 | ||
4671 | if (! h || (_bfinfdpic_osec_to_segment (abfd, osec) | |
4672 | == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section))) | |
4673 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, | |
4674 | loc_sec, loc_offset, encoded); | |
4675 | ||
4676 | BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec) | |
4677 | == (_bfinfdpic_osec_to_segment | |
4678 | (abfd, h->root.u.def.section->output_section))); | |
4679 | ||
4680 | *encoded = osec->vma + offset | |
4681 | - (h->root.u.def.value | |
4682 | + h->root.u.def.section->output_section->vma | |
4683 | + h->root.u.def.section->output_offset); | |
4684 | ||
4685 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; | |
0f64bb02 CM |
4686 | } |
4687 | ||
4688 | ||
48d502e1 BS |
4689 | |
4690 | /* Look through the relocs for a section during the first phase. | |
4691 | ||
4692 | Besides handling virtual table relocs for gc, we have to deal with | |
4693 | all sorts of PIC-related relocations. We describe below the | |
4694 | general plan on how to handle such relocations, even though we only | |
4695 | collect information at this point, storing them in hash tables for | |
4696 | perusal of later passes. | |
4697 | ||
4698 | 32 relocations are propagated to the linker output when creating | |
4699 | position-independent output. LO16 and HI16 relocations are not | |
4700 | supposed to be encountered in this case. | |
4701 | ||
4702 | LABEL16 should always be resolvable by the linker, since it's only | |
4703 | used by branches. | |
4704 | ||
4705 | LABEL24, on the other hand, is used by calls. If it turns out that | |
4706 | the target of a call is a dynamic symbol, a PLT entry must be | |
4707 | created for it, which triggers the creation of a private function | |
4708 | descriptor and, unless lazy binding is disabled, a lazy PLT entry. | |
4709 | ||
4710 | GPREL relocations require the referenced symbol to be in the same | |
4711 | segment as _gp, but this can only be checked later. | |
4712 | ||
4713 | All GOT, GOTOFF and FUNCDESC relocations require a .got section to | |
4714 | exist. LABEL24 might as well, since it may require a PLT entry, | |
4715 | that will require a got. | |
4716 | ||
4717 | Non-FUNCDESC GOT relocations require a GOT entry to be created | |
4718 | regardless of whether the symbol is dynamic. However, since a | |
4719 | global symbol that turns out to not be exported may have the same | |
4720 | address of a non-dynamic symbol, we don't assign GOT entries at | |
4721 | this point, such that we can share them in this case. A relocation | |
4722 | for the GOT entry always has to be created, be it to offset a | |
4723 | private symbol by the section load address, be it to get the symbol | |
4724 | resolved dynamically. | |
4725 | ||
4726 | FUNCDESC GOT relocations require a GOT entry to be created, and | |
4727 | handled as if a FUNCDESC relocation was applied to the GOT entry in | |
4728 | an object file. | |
4729 | ||
4730 | FUNCDESC relocations referencing a symbol that turns out to NOT be | |
4731 | dynamic cause a private function descriptor to be created. The | |
4732 | FUNCDESC relocation then decays to a 32 relocation that points at | |
4733 | the private descriptor. If the symbol is dynamic, the FUNCDESC | |
4734 | relocation is propagated to the linker output, such that the | |
4735 | dynamic linker creates the canonical descriptor, pointing to the | |
4736 | dynamically-resolved definition of the function. | |
4737 | ||
4738 | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic | |
4739 | symbols that are assigned to the same segment as the GOT, but we | |
4740 | can only check this later, after we know the complete set of | |
4741 | symbols defined and/or exported. | |
4742 | ||
4743 | FUNCDESC GOTOFF relocations require a function descriptor to be | |
4744 | created and, unless lazy binding is disabled or the symbol is not | |
4745 | dynamic, a lazy PLT entry. Since we can't tell at this point | |
4746 | whether a symbol is going to be dynamic, we have to decide later | |
4747 | whether to create a lazy PLT entry or bind the descriptor directly | |
4748 | to the private function. | |
4749 | ||
4750 | FUNCDESC_VALUE relocations are not supposed to be present in object | |
4751 | files, but they may very well be simply propagated to the linker | |
4752 | output, since they have no side effect. | |
4753 | ||
4754 | ||
4755 | A function descriptor always requires a FUNCDESC_VALUE relocation. | |
4756 | Whether it's in .plt.rel or not depends on whether lazy binding is | |
4757 | enabled and on whether the referenced symbol is dynamic. | |
4758 | ||
4759 | The existence of a lazy PLT requires the resolverStub lazy PLT | |
4760 | entry to be present. | |
4761 | ||
4762 | ||
4763 | As for assignment of GOT, PLT and lazy PLT entries, and private | |
4764 | descriptors, we might do them all sequentially, but we can do | |
4765 | better than that. For example, we can place GOT entries and | |
4766 | private function descriptors referenced using 12-bit operands | |
4767 | closer to the PIC register value, such that these relocations don't | |
4768 | overflow. Those that are only referenced with LO16 relocations | |
4769 | could come next, but we may as well place PLT-required function | |
4770 | descriptors in the 12-bit range to make them shorter. Symbols | |
4771 | referenced with LO16/HI16 may come next, but we may place | |
4772 | additional function descriptors in the 16-bit range if we can | |
4773 | reliably tell that we've already placed entries that are ever | |
4774 | referenced with only LO16. PLT entries are therefore generated as | |
4775 | small as possible, while not introducing relocation overflows in | |
4776 | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be | |
4777 | generated before or after PLT entries, but not intermingled with | |
4778 | them, such that we can have more lazy PLT entries in range for a | |
4779 | branch to the resolverStub. The resolverStub should be emitted at | |
4780 | the most distant location from the first lazy PLT entry such that | |
4781 | it's still in range for a branch, or closer, if there isn't a need | |
4782 | for so many lazy PLT entries. Additional lazy PLT entries may be | |
4783 | emitted after the resolverStub, as long as branches are still in | |
4784 | range. If the branch goes out of range, longer lazy PLT entries | |
4785 | are emitted. | |
4786 | ||
4787 | We could further optimize PLT and lazy PLT entries by giving them | |
4788 | priority in assignment to closer-to-gr17 locations depending on the | |
4789 | number of occurrences of references to them (assuming a function | |
4790 | that's called more often is more important for performance, so its | |
4791 | PLT entry should be faster), or taking hints from the compiler. | |
4792 | Given infinite time and money... :-) */ | |
0f64bb02 CM |
4793 | |
4794 | static bfd_boolean | |
48d502e1 BS |
4795 | bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4796 | asection *sec, const Elf_Internal_Rela *relocs) | |
0f64bb02 CM |
4797 | { |
4798 | Elf_Internal_Shdr *symtab_hdr; | |
5582a088 | 4799 | struct elf_link_hash_entry **sym_hashes; |
48d502e1 BS |
4800 | const Elf_Internal_Rela *rel; |
4801 | const Elf_Internal_Rela *rel_end; | |
0f64bb02 | 4802 | bfd *dynobj; |
48d502e1 | 4803 | struct bfinfdpic_relocs_info *picrel; |
0f64bb02 | 4804 | |
48d502e1 | 4805 | if (info->relocatable) |
0f64bb02 CM |
4806 | return TRUE; |
4807 | ||
4808 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4809 | sym_hashes = elf_sym_hashes (abfd); | |
0f64bb02 | 4810 | |
48d502e1 BS |
4811 | dynobj = elf_hash_table (info)->dynobj; |
4812 | rel_end = relocs + sec->reloc_count; | |
4813 | for (rel = relocs; rel < rel_end; rel++) | |
0f64bb02 | 4814 | { |
0f64bb02 | 4815 | struct elf_link_hash_entry *h; |
48d502e1 BS |
4816 | unsigned long r_symndx; |
4817 | ||
4818 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4819 | if (r_symndx < symtab_hdr->sh_info) | |
4820 | h = NULL; | |
4821 | else | |
4822 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
0f64bb02 CM |
4823 | |
4824 | switch (ELF32_R_TYPE (rel->r_info)) | |
4825 | { | |
48d502e1 BS |
4826 | case R_BFIN_GOT17M4: |
4827 | case R_BFIN_GOTHI: | |
4828 | case R_BFIN_GOTLO: | |
4829 | case R_BFIN_FUNCDESC_GOT17M4: | |
4830 | case R_BFIN_FUNCDESC_GOTHI: | |
4831 | case R_BFIN_FUNCDESC_GOTLO: | |
4832 | case R_BFIN_GOTOFF17M4: | |
4833 | case R_BFIN_GOTOFFHI: | |
4834 | case R_BFIN_GOTOFFLO: | |
4835 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
4836 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4837 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
4838 | case R_BFIN_FUNCDESC: | |
4839 | case R_BFIN_FUNCDESC_VALUE: | |
4840 | if (! IS_FDPIC (abfd)) | |
4841 | goto bad_reloc; | |
4842 | /* Fall through. */ | |
cb88ce9f BS |
4843 | case R_BFIN_PCREL24: |
4844 | case R_BFIN_PCREL24_JUMP_L: | |
4845 | case R_BFIN_BYTE4_DATA: | |
48d502e1 | 4846 | if (IS_FDPIC (abfd) && ! dynobj) |
0f64bb02 | 4847 | { |
48d502e1 BS |
4848 | elf_hash_table (info)->dynobj = dynobj = abfd; |
4849 | if (! _bfin_create_got_section (abfd, info)) | |
4850 | return FALSE; | |
0f64bb02 | 4851 | } |
48d502e1 | 4852 | if (! IS_FDPIC (abfd)) |
0f64bb02 | 4853 | { |
48d502e1 BS |
4854 | picrel = NULL; |
4855 | break; | |
4856 | } | |
4857 | if (h != NULL) | |
4858 | { | |
4859 | if (h->dynindx == -1) | |
4860 | switch (ELF_ST_VISIBILITY (h->other)) | |
4861 | { | |
4862 | case STV_INTERNAL: | |
4863 | case STV_HIDDEN: | |
4864 | break; | |
4865 | default: | |
4866 | bfd_elf_link_record_dynamic_symbol (info, h); | |
4867 | break; | |
4868 | } | |
4869 | picrel | |
4870 | = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info), | |
4871 | abfd, h, | |
4872 | rel->r_addend, INSERT); | |
0f64bb02 | 4873 | } |
48d502e1 BS |
4874 | else |
4875 | picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info | |
4876 | (info), abfd, r_symndx, | |
4877 | rel->r_addend, INSERT); | |
4878 | if (! picrel) | |
4879 | return FALSE; | |
0f64bb02 | 4880 | break; |
48d502e1 | 4881 | |
0f64bb02 | 4882 | default: |
48d502e1 | 4883 | picrel = NULL; |
0f64bb02 CM |
4884 | break; |
4885 | } | |
48d502e1 BS |
4886 | |
4887 | switch (ELF32_R_TYPE (rel->r_info)) | |
4888 | { | |
cb88ce9f BS |
4889 | case R_BFIN_PCREL24: |
4890 | case R_BFIN_PCREL24_JUMP_L: | |
48d502e1 | 4891 | if (IS_FDPIC (abfd)) |
2774f1a6 | 4892 | picrel->call++; |
48d502e1 BS |
4893 | break; |
4894 | ||
4895 | case R_BFIN_FUNCDESC_VALUE: | |
4896 | picrel->relocsfdv++; | |
4897 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) | |
4898 | picrel->relocs32--; | |
4899 | /* Fall through. */ | |
4900 | ||
cb88ce9f | 4901 | case R_BFIN_BYTE4_DATA: |
48d502e1 BS |
4902 | if (! IS_FDPIC (abfd)) |
4903 | break; | |
4904 | ||
2774f1a6 | 4905 | picrel->sym++; |
48d502e1 BS |
4906 | if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC) |
4907 | picrel->relocs32++; | |
4908 | break; | |
4909 | ||
4910 | case R_BFIN_GOT17M4: | |
2774f1a6 | 4911 | picrel->got17m4++; |
48d502e1 BS |
4912 | break; |
4913 | ||
4914 | case R_BFIN_GOTHI: | |
4915 | case R_BFIN_GOTLO: | |
2774f1a6 | 4916 | picrel->gothilo++; |
48d502e1 BS |
4917 | break; |
4918 | ||
4919 | case R_BFIN_FUNCDESC_GOT17M4: | |
2774f1a6 | 4920 | picrel->fdgot17m4++; |
48d502e1 BS |
4921 | break; |
4922 | ||
4923 | case R_BFIN_FUNCDESC_GOTHI: | |
4924 | case R_BFIN_FUNCDESC_GOTLO: | |
2774f1a6 | 4925 | picrel->fdgothilo++; |
48d502e1 BS |
4926 | break; |
4927 | ||
4928 | case R_BFIN_GOTOFF17M4: | |
4929 | case R_BFIN_GOTOFFHI: | |
4930 | case R_BFIN_GOTOFFLO: | |
2774f1a6 | 4931 | picrel->gotoff++; |
48d502e1 BS |
4932 | break; |
4933 | ||
4934 | case R_BFIN_FUNCDESC_GOTOFF17M4: | |
2774f1a6 | 4935 | picrel->fdgoff17m4++; |
48d502e1 BS |
4936 | break; |
4937 | ||
4938 | case R_BFIN_FUNCDESC_GOTOFFHI: | |
4939 | case R_BFIN_FUNCDESC_GOTOFFLO: | |
2774f1a6 | 4940 | picrel->fdgoffhilo++; |
48d502e1 BS |
4941 | break; |
4942 | ||
4943 | case R_BFIN_FUNCDESC: | |
2774f1a6 | 4944 | picrel->fd++; |
48d502e1 BS |
4945 | picrel->relocsfd++; |
4946 | break; | |
4947 | ||
4948 | /* This relocation describes the C++ object vtable hierarchy. | |
4949 | Reconstruct it for later use during GC. */ | |
4950 | case R_BFIN_GNU_VTINHERIT: | |
4951 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
4952 | return FALSE; | |
4953 | break; | |
4954 | ||
4955 | /* This relocation describes which C++ vtable entries are actually | |
4956 | used. Record for later use during GC. */ | |
4957 | case R_BFIN_GNU_VTENTRY: | |
d17e0c6e JB |
4958 | BFD_ASSERT (h != NULL); |
4959 | if (h != NULL | |
4960 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
48d502e1 BS |
4961 | return FALSE; |
4962 | break; | |
4963 | ||
cb88ce9f BS |
4964 | case R_BFIN_HUIMM16: |
4965 | case R_BFIN_LUIMM16: | |
4966 | case R_BFIN_PCREL12_JUMP_S: | |
4967 | case R_BFIN_PCREL10: | |
48d502e1 BS |
4968 | break; |
4969 | ||
4970 | default: | |
4971 | bad_reloc: | |
4972 | (*_bfd_error_handler) | |
4973 | (_("%B: unsupported relocation type %i"), | |
4974 | abfd, ELF32_R_TYPE (rel->r_info)); | |
4975 | return FALSE; | |
4976 | } | |
0f64bb02 CM |
4977 | } |
4978 | ||
4979 | return TRUE; | |
4980 | } | |
4981 | ||
48d502e1 BS |
4982 | /* Set the right machine number for a Blackfin ELF file. */ |
4983 | ||
4984 | static bfd_boolean | |
4985 | elf32_bfin_object_p (bfd *abfd) | |
4986 | { | |
4987 | bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0); | |
4988 | return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0) | |
4989 | == (IS_FDPIC (abfd))); | |
4990 | } | |
0f64bb02 | 4991 | |
0f64bb02 | 4992 | static bfd_boolean |
48d502e1 | 4993 | elf32_bfin_set_private_flags (bfd * abfd, flagword flags) |
0f64bb02 | 4994 | { |
48d502e1 BS |
4995 | elf_elfheader (abfd)->e_flags = flags; |
4996 | elf_flags_init (abfd) = TRUE; | |
4997 | return TRUE; | |
4998 | } | |
0f64bb02 | 4999 | |
48d502e1 BS |
5000 | /* Copy backend specific data from one object module to another. */ |
5001 | ||
5002 | static bfd_boolean | |
5003 | bfin_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5004 | { | |
0f64bb02 CM |
5005 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5006 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5007 | return TRUE; | |
5008 | ||
48d502e1 BS |
5009 | BFD_ASSERT (!elf_flags_init (obfd) |
5010 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
0f64bb02 | 5011 | |
48d502e1 BS |
5012 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
5013 | elf_flags_init (obfd) = TRUE; | |
104d59d1 JM |
5014 | |
5015 | /* Copy object attributes. */ | |
5016 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
5017 | ||
0f64bb02 CM |
5018 | return TRUE; |
5019 | } | |
5020 | ||
0f64bb02 | 5021 | static bfd_boolean |
48d502e1 | 5022 | elf32_bfinfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
0f64bb02 | 5023 | { |
48d502e1 BS |
5024 | unsigned i; |
5025 | ||
5026 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5027 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5028 | return TRUE; | |
5029 | ||
5030 | if (! bfin_elf_copy_private_bfd_data (ibfd, obfd)) | |
5031 | return FALSE; | |
5032 | ||
5033 | if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr | |
5034 | || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) | |
5035 | return TRUE; | |
5036 | ||
5037 | /* Copy the stack size. */ | |
5038 | for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) | |
5039 | if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) | |
5040 | { | |
5041 | Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; | |
5042 | ||
5043 | for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) | |
5044 | if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) | |
5045 | { | |
5046 | memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); | |
5047 | ||
5048 | /* Rewrite the phdrs, since we're only called after they | |
5049 | were first written. */ | |
5050 | if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) | |
5051 | ->s->sizeof_ehdr, SEEK_SET) != 0 | |
5052 | || get_elf_backend_data (obfd)->s | |
5053 | ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, | |
5054 | elf_elfheader (obfd)->e_phnum) != 0) | |
5055 | return FALSE; | |
5056 | break; | |
5057 | } | |
5058 | ||
5059 | break; | |
5060 | } | |
5061 | ||
0f64bb02 CM |
5062 | return TRUE; |
5063 | } | |
5064 | ||
5065 | ||
5066 | /* Display the flags field. */ | |
5067 | static bfd_boolean | |
5068 | elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr) | |
5069 | { | |
5070 | FILE *file = (FILE *) ptr; | |
48d502e1 | 5071 | flagword flags; |
0f64bb02 CM |
5072 | |
5073 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5074 | ||
5075 | /* Print normal ELF private data. */ | |
5076 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5077 | ||
48d502e1 | 5078 | flags = elf_elfheader (abfd)->e_flags; |
0f64bb02 CM |
5079 | |
5080 | /* xgettext:c-format */ | |
5081 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
5082 | ||
48d502e1 BS |
5083 | if (flags & EF_BFIN_PIC) |
5084 | fprintf (file, " -fpic"); | |
5085 | ||
5086 | if (flags & EF_BFIN_FDPIC) | |
5087 | fprintf (file, " -mfdpic"); | |
5088 | ||
0f64bb02 CM |
5089 | fputc ('\n', file); |
5090 | ||
5091 | return TRUE; | |
5092 | } | |
5093 | ||
48d502e1 BS |
5094 | /* Merge backend specific data from an object file to the output |
5095 | object file when linking. */ | |
5096 | ||
5097 | static bfd_boolean | |
5098 | elf32_bfin_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5099 | { | |
7a84e3da | 5100 | flagword old_flags, new_flags; |
48d502e1 BS |
5101 | bfd_boolean error = FALSE; |
5102 | ||
5103 | new_flags = elf_elfheader (ibfd)->e_flags; | |
5104 | old_flags = elf_elfheader (obfd)->e_flags; | |
5105 | ||
5106 | if (new_flags & EF_BFIN_FDPIC) | |
5107 | new_flags &= ~EF_BFIN_PIC; | |
5108 | ||
c7e2358a AM |
5109 | #ifndef DEBUG |
5110 | if (0) | |
5111 | #endif | |
48d502e1 BS |
5112 | (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s", |
5113 | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", | |
5114 | bfd_get_filename (ibfd)); | |
48d502e1 BS |
5115 | |
5116 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
5117 | { | |
5118 | elf_flags_init (obfd) = TRUE; | |
7a84e3da | 5119 | elf_elfheader (obfd)->e_flags = new_flags; |
48d502e1 BS |
5120 | } |
5121 | ||
7a84e3da | 5122 | if (((new_flags & EF_BFIN_FDPIC) == 0) != (! IS_FDPIC (obfd))) |
48d502e1 BS |
5123 | { |
5124 | error = TRUE; | |
5125 | if (IS_FDPIC (obfd)) | |
5126 | (*_bfd_error_handler) | |
5127 | (_("%s: cannot link non-fdpic object file into fdpic executable"), | |
5128 | bfd_get_filename (ibfd)); | |
5129 | else | |
5130 | (*_bfd_error_handler) | |
5131 | (_("%s: cannot link fdpic object file into non-fdpic executable"), | |
5132 | bfd_get_filename (ibfd)); | |
5133 | } | |
5134 | ||
5135 | if (error) | |
5136 | bfd_set_error (bfd_error_bad_value); | |
5137 | ||
5138 | return !error; | |
5139 | } | |
5140 | \f | |
0f64bb02 CM |
5141 | /* bfin ELF linker hash entry. */ |
5142 | ||
5143 | struct bfin_link_hash_entry | |
5144 | { | |
5145 | struct elf_link_hash_entry root; | |
5146 | ||
5147 | /* Number of PC relative relocs copied for this symbol. */ | |
5148 | struct bfin_pcrel_relocs_copied *pcrel_relocs_copied; | |
5149 | }; | |
5150 | ||
5151 | /* bfin ELF linker hash table. */ | |
5152 | ||
5153 | struct bfin_link_hash_table | |
5154 | { | |
5155 | struct elf_link_hash_table root; | |
5156 | ||
87d72d41 AM |
5157 | /* Small local sym cache. */ |
5158 | struct sym_cache sym_cache; | |
0f64bb02 CM |
5159 | }; |
5160 | ||
5161 | #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent)) | |
5162 | ||
5163 | static struct bfd_hash_entry * | |
5164 | bfin_link_hash_newfunc (struct bfd_hash_entry *entry, | |
48d502e1 | 5165 | struct bfd_hash_table *table, const char *string) |
0f64bb02 CM |
5166 | { |
5167 | struct bfd_hash_entry *ret = entry; | |
5168 | ||
5169 | /* Allocate the structure if it has not already been allocated by a | |
5170 | subclass. */ | |
5171 | if (ret == NULL) | |
5172 | ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry)); | |
5173 | if (ret == NULL) | |
5174 | return ret; | |
5175 | ||
5176 | /* Call the allocation method of the superclass. */ | |
5177 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); | |
5178 | if (ret != NULL) | |
5179 | bfin_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
5180 | ||
5181 | return ret; | |
5182 | } | |
5183 | ||
5184 | /* Create an bfin ELF linker hash table. */ | |
5185 | ||
5186 | static struct bfd_link_hash_table * | |
5187 | bfin_link_hash_table_create (bfd * abfd) | |
5188 | { | |
5189 | struct bfin_link_hash_table *ret; | |
5190 | bfd_size_type amt = sizeof (struct bfin_link_hash_table); | |
5191 | ||
48d502e1 BS |
5192 | ret = bfd_zalloc (abfd, amt); |
5193 | if (ret == NULL) | |
0f64bb02 CM |
5194 | return NULL; |
5195 | ||
5196 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
66eb6687 | 5197 | bfin_link_hash_newfunc, |
4dfe6ac6 NC |
5198 | sizeof (struct elf_link_hash_entry), |
5199 | BFIN_ELF_DATA)) | |
0f64bb02 CM |
5200 | { |
5201 | free (ret); | |
5202 | return NULL; | |
5203 | } | |
5204 | ||
87d72d41 | 5205 | ret->sym_cache.abfd = NULL; |
0f64bb02 CM |
5206 | |
5207 | return &ret->root.root; | |
5208 | } | |
5209 | ||
5210 | /* The size in bytes of an entry in the procedure linkage table. */ | |
5211 | ||
5212 | /* Finish up the dynamic sections. */ | |
5213 | ||
5214 | static bfd_boolean | |
5215 | bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
5216 | struct bfd_link_info *info) | |
5217 | { | |
5218 | bfd *dynobj; | |
5219 | asection *sdyn; | |
5220 | ||
5221 | dynobj = elf_hash_table (info)->dynobj; | |
5222 | ||
3d4d4302 | 5223 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
0f64bb02 CM |
5224 | |
5225 | if (elf_hash_table (info)->dynamic_sections_created) | |
5226 | { | |
5227 | Elf32_External_Dyn *dyncon, *dynconend; | |
5228 | ||
5229 | BFD_ASSERT (sdyn != NULL); | |
5230 | ||
5231 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
5232 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5233 | for (; dyncon < dynconend; dyncon++) | |
5234 | { | |
5235 | Elf_Internal_Dyn dyn; | |
5236 | ||
5237 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5238 | ||
5239 | } | |
5240 | ||
5241 | } | |
5242 | return TRUE; | |
5243 | } | |
5244 | ||
5245 | /* Finish up dynamic symbol handling. We set the contents of various | |
5246 | dynamic sections here. */ | |
5247 | ||
5248 | static bfd_boolean | |
5249 | bfin_finish_dynamic_symbol (bfd * output_bfd, | |
5250 | struct bfd_link_info *info, | |
5251 | struct elf_link_hash_entry *h, | |
5252 | Elf_Internal_Sym * sym) | |
5253 | { | |
5254 | bfd *dynobj; | |
5255 | ||
5256 | dynobj = elf_hash_table (info)->dynobj; | |
5257 | ||
5258 | if (h->got.offset != (bfd_vma) - 1) | |
5259 | { | |
5260 | asection *sgot; | |
5261 | asection *srela; | |
5262 | Elf_Internal_Rela rela; | |
5263 | bfd_byte *loc; | |
5264 | ||
5265 | /* This symbol has an entry in the global offset table. | |
5266 | Set it up. */ | |
5267 | ||
3d4d4302 AM |
5268 | sgot = bfd_get_linker_section (dynobj, ".got"); |
5269 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
0f64bb02 CM |
5270 | BFD_ASSERT (sgot != NULL && srela != NULL); |
5271 | ||
5272 | rela.r_offset = (sgot->output_section->vma | |
5273 | + sgot->output_offset | |
5274 | + (h->got.offset & ~(bfd_vma) 1)); | |
5275 | ||
5276 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5277 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5278 | the symbol was forced to be local because of a version file. | |
5279 | The entry in the global offset table will already have been | |
5280 | initialized in the relocate_section function. */ | |
5281 | if (info->shared | |
5282 | && (info->symbolic | |
5283 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
5284 | { | |
4a97a0e5 AM |
5285 | (*_bfd_error_handler) (_("*** check this relocation %s"), |
5286 | __FUNCTION__); | |
cb88ce9f | 5287 | rela.r_info = ELF32_R_INFO (0, R_BFIN_PCREL24); |
0f64bb02 CM |
5288 | rela.r_addend = bfd_get_signed_32 (output_bfd, |
5289 | (sgot->contents | |
5290 | + | |
5291 | (h->got. | |
5292 | offset & ~(bfd_vma) 1))); | |
5293 | } | |
5294 | else | |
5295 | { | |
5296 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
5297 | sgot->contents + (h->got.offset & ~(bfd_vma) 1)); | |
cb88ce9f | 5298 | rela.r_info = ELF32_R_INFO (h->dynindx, R_BFIN_GOT); |
0f64bb02 CM |
5299 | rela.r_addend = 0; |
5300 | } | |
5301 | ||
5302 | loc = srela->contents; | |
5303 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
5304 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5305 | } | |
5306 | ||
5307 | if (h->needs_copy) | |
5308 | { | |
5309 | BFD_ASSERT (0); | |
5310 | } | |
5311 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5592d7ec | 5312 | if (strcmp (h->root.root.string, "__DYNAMIC") == 0 |
22edb2f1 | 5313 | || h == elf_hash_table (info)->hgot) |
0f64bb02 CM |
5314 | sym->st_shndx = SHN_ABS; |
5315 | ||
5316 | return TRUE; | |
5317 | } | |
5318 | ||
5319 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5320 | regular object. The current definition is in some section of the | |
5321 | dynamic object, but we're not including those sections. We have to | |
5322 | change the definition to something the rest of the link can | |
5323 | understand. */ | |
5324 | ||
5325 | static bfd_boolean | |
5326 | bfin_adjust_dynamic_symbol (struct bfd_link_info *info, | |
5327 | struct elf_link_hash_entry *h) | |
5328 | { | |
5329 | bfd *dynobj; | |
5330 | asection *s; | |
5331 | unsigned int power_of_two; | |
5332 | ||
5333 | dynobj = elf_hash_table (info)->dynobj; | |
5334 | ||
5335 | /* Make sure we know what is going on here. */ | |
5336 | BFD_ASSERT (dynobj != NULL | |
5337 | && (h->needs_plt | |
5338 | || h->u.weakdef != NULL | |
5339 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); | |
5340 | ||
5341 | /* If this is a function, put it in the procedure linkage table. We | |
5342 | will fill in the contents of the procedure linkage table later, | |
5343 | when we know the address of the .got section. */ | |
5344 | if (h->type == STT_FUNC || h->needs_plt) | |
5345 | { | |
5346 | BFD_ASSERT(0); | |
5347 | } | |
5348 | ||
5349 | /* If this is a weak symbol, and there is a real definition, the | |
5350 | processor independent code will have arranged for us to see the | |
5351 | real definition first, and we can just use the same value. */ | |
5352 | if (h->u.weakdef != NULL) | |
5353 | { | |
5354 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
5355 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5356 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5357 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
5358 | return TRUE; | |
5359 | } | |
5360 | ||
5361 | /* This is a reference to a symbol defined by a dynamic object which | |
5362 | is not a function. */ | |
5363 | ||
5364 | /* If we are creating a shared library, we must presume that the | |
5365 | only references to the symbol are via the global offset table. | |
5366 | For such cases we need not do anything here; the relocations will | |
5367 | be handled correctly by relocate_section. */ | |
5368 | if (info->shared) | |
5369 | return TRUE; | |
5370 | ||
5371 | /* We must allocate the symbol in our .dynbss section, which will | |
5372 | become part of the .bss section of the executable. There will be | |
5373 | an entry for this symbol in the .dynsym section. The dynamic | |
5374 | object will contain position independent code, so all references | |
5375 | from the dynamic object to this symbol will go through the global | |
5376 | offset table. The dynamic linker will use the .dynsym entry to | |
5377 | determine the address it must put in the global offset table, so | |
5378 | both the dynamic object and the regular object will refer to the | |
5379 | same memory location for the variable. */ | |
5380 | ||
3d4d4302 | 5381 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
0f64bb02 CM |
5382 | BFD_ASSERT (s != NULL); |
5383 | ||
5384 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
5385 | copy the initial value out of the dynamic object and into the | |
5386 | runtime process image. We need to remember the offset into the | |
5387 | .rela.bss section we are going to use. */ | |
5388 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5389 | { | |
5390 | asection *srel; | |
5391 | ||
3d4d4302 | 5392 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
0f64bb02 CM |
5393 | BFD_ASSERT (srel != NULL); |
5394 | srel->size += sizeof (Elf32_External_Rela); | |
5395 | h->needs_copy = 1; | |
5396 | } | |
5397 | ||
5398 | /* We need to figure out the alignment required for this symbol. I | |
5399 | have no idea how ELF linkers handle this. */ | |
5400 | power_of_two = bfd_log2 (h->size); | |
5401 | if (power_of_two > 3) | |
5402 | power_of_two = 3; | |
5403 | ||
5404 | /* Apply the required alignment. */ | |
5405 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
5406 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
5407 | { | |
5408 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
5409 | return FALSE; | |
5410 | } | |
5411 | ||
5412 | /* Define the symbol as being at this point in the section. */ | |
5413 | h->root.u.def.section = s; | |
5414 | h->root.u.def.value = s->size; | |
5415 | ||
5416 | /* Increment the section size to make room for the symbol. */ | |
5417 | s->size += h->size; | |
5418 | ||
5419 | return TRUE; | |
5420 | } | |
5421 | ||
5422 | /* The bfin linker needs to keep track of the number of relocs that it | |
5423 | decides to copy in check_relocs for each symbol. This is so that it | |
5424 | can discard PC relative relocs if it doesn't need them when linking | |
5425 | with -Bsymbolic. We store the information in a field extending the | |
5426 | regular ELF linker hash table. */ | |
5427 | ||
5428 | /* This structure keeps track of the number of PC relative relocs we have | |
5429 | copied for a given symbol. */ | |
5430 | ||
5431 | struct bfin_pcrel_relocs_copied | |
5432 | { | |
5433 | /* Next section. */ | |
5434 | struct bfin_pcrel_relocs_copied *next; | |
5435 | /* A section in dynobj. */ | |
5436 | asection *section; | |
5437 | /* Number of relocs copied in this section. */ | |
5438 | bfd_size_type count; | |
5439 | }; | |
5440 | ||
5441 | /* This function is called via elf_link_hash_traverse if we are | |
5442 | creating a shared object. In the -Bsymbolic case it discards the | |
5443 | space allocated to copy PC relative relocs against symbols which | |
5444 | are defined in regular objects. For the normal shared case, it | |
5445 | discards space for pc-relative relocs that have become local due to | |
5446 | symbol visibility changes. We allocated space for them in the | |
5447 | check_relocs routine, but we won't fill them in in the | |
5448 | relocate_section routine. | |
5449 | ||
5450 | We also check whether any of the remaining relocations apply | |
5451 | against a readonly section, and set the DF_TEXTREL flag in this | |
5452 | case. */ | |
5453 | ||
5454 | static bfd_boolean | |
5455 | bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf) | |
5456 | { | |
5457 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5458 | struct bfin_pcrel_relocs_copied *s; | |
5459 | ||
0f64bb02 CM |
5460 | if (!h->def_regular || (!info->symbolic && !h->forced_local)) |
5461 | { | |
5462 | if ((info->flags & DF_TEXTREL) == 0) | |
5463 | { | |
5464 | /* Look for relocations against read-only sections. */ | |
5465 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5466 | s != NULL; s = s->next) | |
5467 | if ((s->section->flags & SEC_READONLY) != 0) | |
5468 | { | |
5469 | info->flags |= DF_TEXTREL; | |
5470 | break; | |
5471 | } | |
5472 | } | |
5473 | ||
5474 | return TRUE; | |
5475 | } | |
5476 | ||
5477 | for (s = bfin_hash_entry (h)->pcrel_relocs_copied; | |
5478 | s != NULL; s = s->next) | |
5479 | s->section->size -= s->count * sizeof (Elf32_External_Rela); | |
5480 | ||
5481 | return TRUE; | |
5482 | } | |
5483 | ||
0f64bb02 CM |
5484 | static bfd_boolean |
5485 | bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, | |
5486 | struct bfd_link_info *info) | |
5487 | { | |
5488 | bfd *dynobj; | |
5489 | asection *s; | |
5490 | bfd_boolean relocs; | |
5491 | ||
5492 | dynobj = elf_hash_table (info)->dynobj; | |
5493 | BFD_ASSERT (dynobj != NULL); | |
5494 | ||
5495 | if (elf_hash_table (info)->dynamic_sections_created) | |
5496 | { | |
5497 | /* Set the contents of the .interp section to the interpreter. */ | |
5498 | if (info->executable) | |
5499 | { | |
3d4d4302 | 5500 | s = bfd_get_linker_section (dynobj, ".interp"); |
0f64bb02 CM |
5501 | BFD_ASSERT (s != NULL); |
5502 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
5503 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
5504 | } | |
5505 | } | |
5506 | else | |
5507 | { | |
5508 | /* We may have created entries in the .rela.got section. | |
5509 | However, if we are not creating the dynamic sections, we will | |
5510 | not actually use these entries. Reset the size of .rela.got, | |
5511 | which will cause it to get stripped from the output file | |
5512 | below. */ | |
3d4d4302 | 5513 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
0f64bb02 CM |
5514 | if (s != NULL) |
5515 | s->size = 0; | |
5516 | } | |
5517 | ||
5518 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
5519 | PC relative relocs against symbols defined in a regular object. | |
5520 | For the normal shared case we discard the PC relative relocs | |
5521 | against symbols that have become local due to visibility changes. | |
5522 | We allocated space for them in the check_relocs routine, but we | |
5523 | will not fill them in in the relocate_section routine. */ | |
5524 | if (info->shared) | |
5525 | elf_link_hash_traverse (elf_hash_table (info), | |
5526 | bfin_discard_copies, (PTR) info); | |
5527 | ||
5528 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
5529 | determined the sizes of the various dynamic sections. Allocate | |
5530 | memory for them. */ | |
5531 | relocs = FALSE; | |
5532 | for (s = dynobj->sections; s != NULL; s = s->next) | |
5533 | { | |
5534 | const char *name; | |
5535 | bfd_boolean strip; | |
5536 | ||
5537 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5538 | continue; | |
5539 | ||
5540 | /* It's OK to base decisions on the section name, because none | |
5541 | of the dynobj section names depend upon the input files. */ | |
5542 | name = bfd_get_section_name (dynobj, s); | |
5543 | ||
5544 | strip = FALSE; | |
5545 | ||
0112cd26 | 5546 | if (CONST_STRNEQ (name, ".rela")) |
0f64bb02 CM |
5547 | { |
5548 | if (s->size == 0) | |
5549 | { | |
5550 | /* If we don't need this section, strip it from the | |
5551 | output file. This is mostly to handle .rela.bss and | |
5552 | .rela.plt. We must create both sections in | |
5553 | create_dynamic_sections, because they must be created | |
5554 | before the linker maps input sections to output | |
5555 | sections. The linker does that before | |
5556 | adjust_dynamic_symbol is called, and it is that | |
5557 | function which decides whether anything needs to go | |
5558 | into these sections. */ | |
5559 | strip = TRUE; | |
5560 | } | |
5561 | else | |
5562 | { | |
5563 | relocs = TRUE; | |
5564 | ||
5565 | /* We use the reloc_count field as a counter if we need | |
5566 | to copy relocs into the output file. */ | |
5567 | s->reloc_count = 0; | |
5568 | } | |
5569 | } | |
0112cd26 | 5570 | else if (! CONST_STRNEQ (name, ".got")) |
0f64bb02 CM |
5571 | { |
5572 | /* It's not one of our sections, so don't allocate space. */ | |
5573 | continue; | |
5574 | } | |
5575 | ||
5576 | if (strip) | |
5577 | { | |
5578 | s->flags |= SEC_EXCLUDE; | |
5579 | continue; | |
5580 | } | |
5581 | ||
5582 | /* Allocate memory for the section contents. */ | |
5583 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. | |
5584 | Unused entries should be reclaimed before the section's contents | |
5585 | are written out, but at the moment this does not happen. Thus in | |
5586 | order to prevent writing out garbage, we initialise the section's | |
5587 | contents to zero. */ | |
5588 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
5589 | if (s->contents == NULL && s->size != 0) | |
5590 | return FALSE; | |
5591 | } | |
5592 | ||
5593 | if (elf_hash_table (info)->dynamic_sections_created) | |
5594 | { | |
5595 | /* Add some entries to the .dynamic section. We fill in the | |
5596 | values later, in bfin_finish_dynamic_sections, but we | |
5597 | must add the entries now so that we get the correct size for | |
5598 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5599 | dynamic linker and used by the debugger. */ | |
5600 | #define add_dynamic_entry(TAG, VAL) \ | |
5601 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
5602 | ||
5603 | if (!info->shared) | |
5604 | { | |
5605 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
5606 | return FALSE; | |
5607 | } | |
5608 | ||
5609 | ||
5610 | if (relocs) | |
5611 | { | |
5612 | if (!add_dynamic_entry (DT_RELA, 0) | |
5613 | || !add_dynamic_entry (DT_RELASZ, 0) | |
5614 | || !add_dynamic_entry (DT_RELAENT, | |
5615 | sizeof (Elf32_External_Rela))) | |
5616 | return FALSE; | |
5617 | } | |
5618 | ||
5619 | if ((info->flags & DF_TEXTREL) != 0) | |
5620 | { | |
5621 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
5622 | return FALSE; | |
5623 | } | |
5624 | } | |
5625 | #undef add_dynamic_entry | |
5626 | ||
5627 | return TRUE; | |
5628 | } | |
48d502e1 | 5629 | \f |
0f64bb02 CM |
5630 | /* Given a .data section and a .emreloc in-memory section, store |
5631 | relocation information into the .emreloc section which can be | |
5632 | used at runtime to relocate the section. This is called by the | |
5633 | linker when the --embedded-relocs switch is used. This is called | |
5634 | after the add_symbols entry point has been called for all the | |
5635 | objects, and before the final_link entry point is called. */ | |
5636 | ||
3b55e94a BS |
5637 | bfd_boolean bfd_bfin_elf32_create_embedded_relocs |
5638 | PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **)); | |
5639 | ||
0f64bb02 CM |
5640 | bfd_boolean |
5641 | bfd_bfin_elf32_create_embedded_relocs ( | |
5642 | bfd *abfd, | |
5643 | struct bfd_link_info *info, | |
5644 | asection *datasec, | |
5645 | asection *relsec, | |
5646 | char **errmsg) | |
5647 | { | |
5648 | Elf_Internal_Shdr *symtab_hdr; | |
5649 | Elf_Internal_Sym *isymbuf = NULL; | |
5650 | Elf_Internal_Rela *internal_relocs = NULL; | |
5651 | Elf_Internal_Rela *irel, *irelend; | |
5652 | bfd_byte *p; | |
5653 | bfd_size_type amt; | |
5654 | ||
5655 | BFD_ASSERT (! info->relocatable); | |
5656 | ||
5657 | *errmsg = NULL; | |
5658 | ||
5659 | if (datasec->reloc_count == 0) | |
5660 | return TRUE; | |
5661 | ||
5662 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5663 | ||
5664 | /* Get a copy of the native relocations. */ | |
5665 | internal_relocs = (_bfd_elf_link_read_relocs | |
5666 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
5667 | info->keep_memory)); | |
5668 | if (internal_relocs == NULL) | |
5669 | goto error_return; | |
5670 | ||
5671 | amt = (bfd_size_type) datasec->reloc_count * 12; | |
5672 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
5673 | if (relsec->contents == NULL) | |
5674 | goto error_return; | |
5675 | ||
5676 | p = relsec->contents; | |
5677 | ||
5678 | irelend = internal_relocs + datasec->reloc_count; | |
5679 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
5680 | { | |
5681 | asection *targetsec; | |
5682 | ||
5683 | /* We are going to write a four byte longword into the runtime | |
5684 | reloc section. The longword will be the address in the data | |
5685 | section which must be relocated. It is followed by the name | |
5686 | of the target section NUL-padded or truncated to 8 | |
5687 | characters. */ | |
5688 | ||
5689 | /* We can only relocate absolute longword relocs at run time. */ | |
cb88ce9f | 5690 | if (ELF32_R_TYPE (irel->r_info) != (int) R_BFIN_BYTE4_DATA) |
0f64bb02 CM |
5691 | { |
5692 | *errmsg = _("unsupported reloc type"); | |
5693 | bfd_set_error (bfd_error_bad_value); | |
5694 | goto error_return; | |
5695 | } | |
5696 | ||
5697 | /* Get the target section referred to by the reloc. */ | |
5698 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
5699 | { | |
5700 | /* A local symbol. */ | |
5701 | Elf_Internal_Sym *isym; | |
5702 | ||
5703 | /* Read this BFD's local symbols if we haven't done so already. */ | |
5704 | if (isymbuf == NULL) | |
5705 | { | |
5706 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5707 | if (isymbuf == NULL) | |
5708 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
5709 | symtab_hdr->sh_info, 0, | |
5710 | NULL, NULL, NULL); | |
5711 | if (isymbuf == NULL) | |
5712 | goto error_return; | |
5713 | } | |
5714 | ||
5715 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
5716 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5717 | } | |
5718 | else | |
5719 | { | |
5720 | unsigned long indx; | |
5721 | struct elf_link_hash_entry *h; | |
5722 | ||
5723 | /* An external symbol. */ | |
5724 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
5725 | h = elf_sym_hashes (abfd)[indx]; | |
5726 | BFD_ASSERT (h != NULL); | |
5727 | if (h->root.type == bfd_link_hash_defined | |
5728 | || h->root.type == bfd_link_hash_defweak) | |
5729 | targetsec = h->root.u.def.section; | |
5730 | else | |
5731 | targetsec = NULL; | |
5732 | } | |
5733 | ||
5734 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
5735 | memset (p + 4, 0, 8); | |
5736 | if (targetsec != NULL) | |
9ba4c445 | 5737 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0f64bb02 CM |
5738 | } |
5739 | ||
5740 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
5741 | free (isymbuf); | |
5742 | if (internal_relocs != NULL | |
5743 | && elf_section_data (datasec)->relocs != internal_relocs) | |
5744 | free (internal_relocs); | |
5745 | return TRUE; | |
5746 | ||
5747 | error_return: | |
5748 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
5749 | free (isymbuf); | |
5750 | if (internal_relocs != NULL | |
5751 | && elf_section_data (datasec)->relocs != internal_relocs) | |
5752 | free (internal_relocs); | |
5753 | return FALSE; | |
5754 | } | |
b0a0b978 JZ |
5755 | |
5756 | struct bfd_elf_special_section const elf32_bfin_special_sections[] = | |
5757 | { | |
5758 | { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, | |
5759 | { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
5760 | { NULL, 0, 0, 0, 0 } | |
5761 | }; | |
5762 | ||
48d502e1 | 5763 | \f |
0f64bb02 CM |
5764 | #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec |
5765 | #define TARGET_LITTLE_NAME "elf32-bfin" | |
5766 | #define ELF_ARCH bfd_arch_bfin | |
ae95ffa6 | 5767 | #define ELF_TARGET_ID BFIN_ELF_DATA |
3b55e94a | 5768 | #define ELF_MACHINE_CODE EM_BLACKFIN |
0f64bb02 CM |
5769 | #define ELF_MAXPAGESIZE 0x1000 |
5770 | #define elf_symbol_leading_char '_' | |
5771 | ||
5772 | #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup | |
157090f7 AM |
5773 | #define bfd_elf32_bfd_reloc_name_lookup \ |
5774 | bfin_bfd_reloc_name_lookup | |
0f64bb02 CM |
5775 | #define elf_info_to_howto bfin_info_to_howto |
5776 | #define elf_info_to_howto_rel 0 | |
48d502e1 | 5777 | #define elf_backend_object_p elf32_bfin_object_p |
0f64bb02 CM |
5778 | |
5779 | #define bfd_elf32_bfd_is_local_label_name \ | |
5780 | bfin_is_local_label_name | |
5781 | #define bfin_hash_table(p) \ | |
5782 | ((struct bfin_link_hash_table *) (p)->hash) | |
5783 | ||
5784 | ||
5785 | ||
5786 | #define elf_backend_create_dynamic_sections \ | |
5787 | _bfd_elf_create_dynamic_sections | |
5788 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5789 | bfin_link_hash_table_create | |
5790 | #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link | |
5791 | ||
48d502e1 | 5792 | #define elf_backend_check_relocs bfin_check_relocs |
0f64bb02 CM |
5793 | #define elf_backend_adjust_dynamic_symbol \ |
5794 | bfin_adjust_dynamic_symbol | |
5795 | #define elf_backend_size_dynamic_sections \ | |
5796 | bfin_size_dynamic_sections | |
5797 | #define elf_backend_relocate_section bfin_relocate_section | |
5798 | #define elf_backend_finish_dynamic_symbol \ | |
5799 | bfin_finish_dynamic_symbol | |
5800 | #define elf_backend_finish_dynamic_sections \ | |
5801 | bfin_finish_dynamic_sections | |
5802 | #define elf_backend_gc_mark_hook bfin_gc_mark_hook | |
5803 | #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook | |
5804 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
5805 | elf32_bfin_merge_private_bfd_data | |
5806 | #define bfd_elf32_bfd_set_private_flags \ | |
5807 | elf32_bfin_set_private_flags | |
5808 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
5809 | elf32_bfin_print_private_bfd_data | |
781303ce MF |
5810 | #define elf_backend_final_write_processing \ |
5811 | elf32_bfin_final_write_processing | |
0f64bb02 CM |
5812 | #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class |
5813 | #define elf_backend_can_gc_sections 1 | |
b0a0b978 | 5814 | #define elf_backend_special_sections elf32_bfin_special_sections |
0f64bb02 CM |
5815 | #define elf_backend_can_refcount 1 |
5816 | #define elf_backend_want_got_plt 0 | |
5817 | #define elf_backend_plt_readonly 1 | |
5818 | #define elf_backend_want_plt_sym 0 | |
5819 | #define elf_backend_got_header_size 12 | |
5820 | #define elf_backend_rela_normal 1 | |
5821 | ||
48d502e1 BS |
5822 | #include "elf32-target.h" |
5823 | ||
5824 | #undef TARGET_LITTLE_SYM | |
5825 | #define TARGET_LITTLE_SYM bfd_elf32_bfinfdpic_vec | |
5826 | #undef TARGET_LITTLE_NAME | |
5827 | #define TARGET_LITTLE_NAME "elf32-bfinfdpic" | |
5828 | #undef elf32_bed | |
5829 | #define elf32_bed elf32_bfinfdpic_bed | |
5830 | ||
5831 | #undef elf_backend_gc_sweep_hook | |
2774f1a6 | 5832 | #define elf_backend_gc_sweep_hook bfinfdpic_gc_sweep_hook |
48d502e1 BS |
5833 | |
5834 | #undef elf_backend_got_header_size | |
5835 | #define elf_backend_got_header_size 0 | |
5836 | ||
5837 | #undef elf_backend_relocate_section | |
5838 | #define elf_backend_relocate_section bfinfdpic_relocate_section | |
5839 | #undef elf_backend_check_relocs | |
5840 | #define elf_backend_check_relocs bfinfdpic_check_relocs | |
5841 | ||
5842 | #undef bfd_elf32_bfd_link_hash_table_create | |
5843 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5844 | bfinfdpic_elf_link_hash_table_create | |
5845 | #undef elf_backend_always_size_sections | |
5846 | #define elf_backend_always_size_sections \ | |
5847 | elf32_bfinfdpic_always_size_sections | |
e36284ab AM |
5848 | #undef elf_backend_modify_program_headers |
5849 | #define elf_backend_modify_program_headers \ | |
5850 | elf32_bfinfdpic_modify_program_headers | |
48d502e1 BS |
5851 | #undef bfd_elf32_bfd_copy_private_bfd_data |
5852 | #define bfd_elf32_bfd_copy_private_bfd_data \ | |
5853 | elf32_bfinfdpic_copy_private_bfd_data | |
5854 | ||
5855 | #undef elf_backend_create_dynamic_sections | |
5856 | #define elf_backend_create_dynamic_sections \ | |
5857 | elf32_bfinfdpic_create_dynamic_sections | |
5858 | #undef elf_backend_adjust_dynamic_symbol | |
5859 | #define elf_backend_adjust_dynamic_symbol \ | |
5860 | elf32_bfinfdpic_adjust_dynamic_symbol | |
5861 | #undef elf_backend_size_dynamic_sections | |
5862 | #define elf_backend_size_dynamic_sections \ | |
5863 | elf32_bfinfdpic_size_dynamic_sections | |
5864 | #undef elf_backend_finish_dynamic_symbol | |
5865 | #define elf_backend_finish_dynamic_symbol \ | |
5866 | elf32_bfinfdpic_finish_dynamic_symbol | |
5867 | #undef elf_backend_finish_dynamic_sections | |
5868 | #define elf_backend_finish_dynamic_sections \ | |
5869 | elf32_bfinfdpic_finish_dynamic_sections | |
5870 | ||
6a9adeca BS |
5871 | #undef elf_backend_discard_info |
5872 | #define elf_backend_discard_info \ | |
5873 | bfinfdpic_elf_discard_info | |
48d502e1 BS |
5874 | #undef elf_backend_can_make_relative_eh_frame |
5875 | #define elf_backend_can_make_relative_eh_frame \ | |
5876 | bfinfdpic_elf_use_relative_eh_frame | |
5877 | #undef elf_backend_can_make_lsda_relative_eh_frame | |
5878 | #define elf_backend_can_make_lsda_relative_eh_frame \ | |
5879 | bfinfdpic_elf_use_relative_eh_frame | |
5880 | #undef elf_backend_encode_eh_address | |
5881 | #define elf_backend_encode_eh_address \ | |
5882 | bfinfdpic_elf_encode_eh_address | |
5883 | ||
5884 | #undef elf_backend_may_use_rel_p | |
5885 | #define elf_backend_may_use_rel_p 1 | |
5886 | #undef elf_backend_may_use_rela_p | |
5887 | #define elf_backend_may_use_rela_p 1 | |
5888 | /* We use REL for dynamic relocations only. */ | |
5889 | #undef elf_backend_default_use_rela_p | |
5890 | #define elf_backend_default_use_rela_p 1 | |
5891 | ||
5892 | #undef elf_backend_omit_section_dynsym | |
5893 | #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym | |
0f64bb02 CM |
5894 | |
5895 | #include "elf32-target.h" |