Commit | Line | Data |
---|---|---|
42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
2e702c99 | 3 | // Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. |
42cacb20 DE |
4 | // Written by David S. Miller <davem@davemloft.net> |
5 | // and David Edelsohn <edelsohn@gnu.org> | |
6 | ||
7 | // This file is part of gold. | |
8 | ||
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; either version 3 of the License, or | |
12 | // (at your option) any later version. | |
13 | ||
14 | // This program is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License | |
20 | // along with this program; if not, write to the Free Software | |
21 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | // MA 02110-1301, USA. | |
23 | ||
24 | #include "gold.h" | |
25 | ||
26 | #include "elfcpp.h" | |
27 | #include "parameters.h" | |
28 | #include "reloc.h" | |
29 | #include "powerpc.h" | |
30 | #include "object.h" | |
31 | #include "symtab.h" | |
32 | #include "layout.h" | |
33 | #include "output.h" | |
34 | #include "copy-relocs.h" | |
35 | #include "target.h" | |
36 | #include "target-reloc.h" | |
37 | #include "target-select.h" | |
38 | #include "tls.h" | |
39 | #include "errors.h" | |
f345227a | 40 | #include "gc.h" |
42cacb20 DE |
41 | |
42 | namespace | |
43 | { | |
44 | ||
45 | using namespace gold; | |
46 | ||
47 | template<int size, bool big_endian> | |
48 | class Output_data_plt_powerpc; | |
49 | ||
cf43a2fe AM |
50 | template<int size, bool big_endian> |
51 | class Output_data_got_powerpc; | |
52 | ||
53 | template<int size, bool big_endian> | |
54 | class Output_data_glink; | |
55 | ||
56 | template<int size, bool big_endian> | |
57 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
58 | { | |
59 | public: | |
dd93cd0a | 60 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
61 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
62 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 63 | |
cf43a2fe AM |
64 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
65 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
66 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
bfdfa4cd | 67 | special_(0), opd_valid_(false), opd_ent_(), access_from_map_() |
cf43a2fe AM |
68 | { } |
69 | ||
70 | ~Powerpc_relobj() | |
71 | { } | |
72 | ||
c9269dff | 73 | // The .got2 section shndx. |
cf43a2fe AM |
74 | unsigned int |
75 | got2_shndx() const | |
76 | { | |
77 | if (size == 32) | |
c9269dff | 78 | return this->special_; |
cf43a2fe AM |
79 | else |
80 | return 0; | |
81 | } | |
82 | ||
c9269dff AM |
83 | // The .opd section shndx. |
84 | unsigned int | |
85 | opd_shndx() const | |
86 | { | |
87 | if (size == 32) | |
88 | return 0; | |
89 | else | |
90 | return this->special_; | |
91 | } | |
92 | ||
93 | // Init OPD entry arrays. | |
94 | void | |
95 | init_opd(size_t opd_size) | |
96 | { | |
97 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 98 | this->opd_ent_.resize(count); |
c9269dff AM |
99 | } |
100 | ||
101 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
102 | unsigned int |
103 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
104 | { |
105 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
106 | gold_assert(ndx < this->opd_ent_.size()); |
107 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 108 | if (value != NULL) |
bfdfa4cd AM |
109 | *value = this->opd_ent_[ndx].off; |
110 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
111 | } |
112 | ||
113 | // Set section and offset of function entry for .opd + R_OFF. | |
114 | void | |
dd93cd0a | 115 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
116 | { |
117 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
118 | gold_assert(ndx < this->opd_ent_.size()); |
119 | this->opd_ent_[ndx].shndx = shndx; | |
120 | this->opd_ent_[ndx].off = value; | |
121 | } | |
122 | ||
123 | // Return discard flag for .opd + R_OFF. | |
124 | bool | |
125 | get_opd_discard(Address r_off) const | |
126 | { | |
127 | size_t ndx = this->opd_ent_ndx(r_off); | |
128 | gold_assert(ndx < this->opd_ent_.size()); | |
129 | return this->opd_ent_[ndx].discard; | |
130 | } | |
131 | ||
132 | // Set discard flag for .opd + R_OFF. | |
133 | void | |
134 | set_opd_discard(Address r_off) | |
135 | { | |
136 | size_t ndx = this->opd_ent_ndx(r_off); | |
137 | gold_assert(ndx < this->opd_ent_.size()); | |
138 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
139 | } |
140 | ||
e81fea4d AM |
141 | Access_from* |
142 | access_from_map() | |
143 | { return &this->access_from_map_; } | |
144 | ||
145 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
146 | // section at DST_OFF. | |
147 | void | |
148 | add_reference(Object* src_obj, | |
149 | unsigned int src_indx, | |
150 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
151 | { | |
152 | Section_id src_id(src_obj, src_indx); | |
153 | this->access_from_map_[dst_off].insert(src_id); | |
154 | } | |
155 | ||
c6de8ed4 AM |
156 | // Add a reference to the code section specified by the .opd entry |
157 | // at DST_OFF | |
158 | void | |
159 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
160 | { | |
161 | size_t ndx = this->opd_ent_ndx(dst_off); | |
162 | if (ndx >= this->opd_ent_.size()) | |
163 | this->opd_ent_.resize(ndx + 1); | |
164 | this->opd_ent_[ndx].gc_mark = true; | |
165 | } | |
166 | ||
167 | void | |
168 | process_gc_mark(Symbol_table* symtab) | |
169 | { | |
170 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
171 | if (this->opd_ent_[i].gc_mark) | |
172 | { | |
173 | unsigned int shndx = this->opd_ent_[i].shndx; | |
174 | symtab->gc()->worklist().push(Section_id(this, shndx)); | |
175 | } | |
176 | } | |
177 | ||
e81fea4d AM |
178 | bool |
179 | opd_valid() const | |
180 | { return this->opd_valid_; } | |
181 | ||
182 | void | |
183 | set_opd_valid() | |
184 | { this->opd_valid_ = true; } | |
185 | ||
c9269dff AM |
186 | // Examine .rela.opd to build info about function entry points. |
187 | void | |
188 | scan_opd_relocs(size_t reloc_count, | |
189 | const unsigned char* prelocs, | |
190 | const unsigned char* plocal_syms); | |
191 | ||
26a4e9cb AM |
192 | // Perform the Sized_relobj_file method, then set up opd info from |
193 | // .opd relocs. | |
c9269dff AM |
194 | void |
195 | do_read_relocs(Read_relocs_data*); | |
196 | ||
26a4e9cb AM |
197 | // Set up some symbols, then perform Sized_relobj_file method. |
198 | // Occurs after garbage collection, which is why opd info can't be | |
199 | // set up here. | |
200 | void | |
201 | do_scan_relocs(Symbol_table*, Layout*, Read_relocs_data*); | |
202 | ||
cf43a2fe AM |
203 | bool |
204 | do_find_special_sections(Read_symbols_data* sd); | |
205 | ||
ec4dbad3 AM |
206 | // Adjust this local symbol value. Return false if the symbol |
207 | // should be discarded from the output file. | |
208 | bool | |
209 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
210 | { | |
211 | if (size == 64 && this->opd_shndx() != 0) | |
212 | { | |
213 | bool is_ordinary; | |
214 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
215 | return true; | |
216 | if (this->get_opd_discard(lv->input_value())) | |
217 | return false; | |
218 | } | |
219 | return true; | |
220 | } | |
221 | ||
dd93cd0a AM |
222 | // Return offset in output GOT section that this object will use |
223 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
224 | Address | |
225 | toc_base_offset() const | |
226 | { return 0x8000; } | |
227 | ||
cf43a2fe | 228 | private: |
bfdfa4cd AM |
229 | struct Opd_ent |
230 | { | |
231 | unsigned int shndx; | |
c6de8ed4 AM |
232 | bool discard : 1; |
233 | bool gc_mark : 1; | |
26a4e9cb | 234 | Address off; |
bfdfa4cd AM |
235 | }; |
236 | ||
237 | // Return index into opd_ent_ array for .opd entry at OFF. | |
238 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
239 | // apart when the language doesn't use the last 8-byte word, the | |
240 | // environment pointer. Thus dividing the entry section offset by | |
241 | // 16 will give an index into opd_ent_ that works for either layout | |
242 | // of .opd. (It leaves some elements of the vector unused when .opd | |
243 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
244 | // until relocations are processed, and in any case it is possible | |
245 | // for an object to have some entries spaced 16 bytes apart and | |
246 | // others 24 bytes apart.) | |
c9269dff AM |
247 | size_t |
248 | opd_ent_ndx(size_t off) const | |
249 | { return off >> 4;} | |
250 | ||
251 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. | |
252 | unsigned int special_; | |
bfdfa4cd AM |
253 | |
254 | // Set at the start of gc_process_relocs, when we know opd_ent_ | |
255 | // vector is valid. The flag could be made atomic and set in | |
256 | // do_read_relocs with memory_order_release and then tested with | |
257 | // memory_order_acquire, potentially resulting in fewer entries in | |
258 | // access_from_map_. | |
259 | bool opd_valid_; | |
260 | ||
c9269dff AM |
261 | // The first 8-byte word of an OPD entry gives the address of the |
262 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 263 | // relocation on this word. The following vector records the |
c9269dff | 264 | // section and offset specified by these relocations. |
bfdfa4cd AM |
265 | std::vector<Opd_ent> opd_ent_; |
266 | ||
e81fea4d | 267 | // References made to this object's .opd section when running |
bfdfa4cd AM |
268 | // gc_process_relocs for another object, before the opd_ent_ vector |
269 | // is valid for this object. | |
e81fea4d | 270 | Access_from access_from_map_; |
cf43a2fe AM |
271 | }; |
272 | ||
42cacb20 DE |
273 | template<int size, bool big_endian> |
274 | class Target_powerpc : public Sized_target<size, big_endian> | |
275 | { | |
276 | public: | |
d83ce4e3 AM |
277 | typedef |
278 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 279 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 280 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
c9269dff | 281 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
282 | // Offset of tp and dtp pointers from start of TLS block. |
283 | static const Address tp_offset = 0x7000; | |
284 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
285 | |
286 | Target_powerpc() | |
287 | : Sized_target<size, big_endian>(&powerpc_info), | |
e5d5f5ed | 288 | got_(NULL), plt_(NULL), iplt_(NULL), glink_(NULL), rela_dyn_(NULL), |
42cacb20 | 289 | copy_relocs_(elfcpp::R_POWERPC_COPY), |
dd93cd0a | 290 | dynbss_(NULL), tlsld_got_offset_(-1U) |
42cacb20 DE |
291 | { |
292 | } | |
293 | ||
2e702c99 | 294 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
295 | // garbage collection. |
296 | void | |
ad0f2072 | 297 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
298 | Layout* layout, |
299 | Sized_relobj_file<size, big_endian>* object, | |
300 | unsigned int data_shndx, | |
301 | unsigned int sh_type, | |
302 | const unsigned char* prelocs, | |
303 | size_t reloc_count, | |
304 | Output_section* output_section, | |
305 | bool needs_special_offset_handling, | |
306 | size_t local_symbol_count, | |
307 | const unsigned char* plocal_symbols); | |
6d03d481 | 308 | |
42cacb20 DE |
309 | // Scan the relocations to look for symbol adjustments. |
310 | void | |
ad0f2072 | 311 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 312 | Layout* layout, |
6fa2a40b | 313 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
314 | unsigned int data_shndx, |
315 | unsigned int sh_type, | |
316 | const unsigned char* prelocs, | |
317 | size_t reloc_count, | |
318 | Output_section* output_section, | |
319 | bool needs_special_offset_handling, | |
320 | size_t local_symbol_count, | |
321 | const unsigned char* plocal_symbols); | |
921b5322 AM |
322 | |
323 | // Map input .toc section to output .got section. | |
324 | const char* | |
325 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
326 | { | |
327 | if (size == 64 && strcmp(name, ".toc") == 0) | |
328 | { | |
329 | *plen = 4; | |
330 | return ".got"; | |
331 | } | |
332 | return NULL; | |
333 | } | |
334 | ||
f3a0ed29 AM |
335 | // Provide linker defined save/restore functions. |
336 | void | |
337 | define_save_restore_funcs(Layout*, Symbol_table*); | |
338 | ||
42cacb20 DE |
339 | // Finalize the sections. |
340 | void | |
f59f41f3 | 341 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
342 | |
343 | // Return the value to use for a dynamic which requires special | |
344 | // treatment. | |
345 | uint64_t | |
346 | do_dynsym_value(const Symbol*) const; | |
347 | ||
c9824451 AM |
348 | // Return the PLT address to use for a local symbol. |
349 | uint64_t | |
350 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
351 | ||
352 | // Return the PLT address to use for a global symbol. | |
353 | uint64_t | |
354 | do_plt_address_for_global(const Symbol*) const; | |
355 | ||
bd73a62d AM |
356 | // Return the offset to use for the GOT_INDX'th got entry which is |
357 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
358 | int64_t | |
359 | do_tls_offset_for_local(const Relobj* object, | |
360 | unsigned int symndx, | |
361 | unsigned int got_indx) const; | |
362 | ||
363 | // Return the offset to use for the GOT_INDX'th got entry which is | |
364 | // for global tls symbol GSYM. | |
365 | int64_t | |
366 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
367 | ||
42cacb20 DE |
368 | // Relocate a section. |
369 | void | |
370 | relocate_section(const Relocate_info<size, big_endian>*, | |
371 | unsigned int sh_type, | |
372 | const unsigned char* prelocs, | |
373 | size_t reloc_count, | |
374 | Output_section* output_section, | |
375 | bool needs_special_offset_handling, | |
376 | unsigned char* view, | |
c9269dff | 377 | Address view_address, |
364c7fa5 ILT |
378 | section_size_type view_size, |
379 | const Reloc_symbol_changes*); | |
42cacb20 DE |
380 | |
381 | // Scan the relocs during a relocatable link. | |
382 | void | |
ad0f2072 | 383 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 384 | Layout* layout, |
6fa2a40b | 385 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
386 | unsigned int data_shndx, |
387 | unsigned int sh_type, | |
388 | const unsigned char* prelocs, | |
389 | size_t reloc_count, | |
390 | Output_section* output_section, | |
391 | bool needs_special_offset_handling, | |
392 | size_t local_symbol_count, | |
393 | const unsigned char* plocal_symbols, | |
394 | Relocatable_relocs*); | |
395 | ||
7404fe1b | 396 | // Emit relocations for a section. |
42cacb20 | 397 | void |
7404fe1b AM |
398 | relocate_relocs(const Relocate_info<size, big_endian>*, |
399 | unsigned int sh_type, | |
400 | const unsigned char* prelocs, | |
401 | size_t reloc_count, | |
402 | Output_section* output_section, | |
62fe925a RM |
403 | typename elfcpp::Elf_types<size>::Elf_Off |
404 | offset_in_output_section, | |
7404fe1b AM |
405 | const Relocatable_relocs*, |
406 | unsigned char*, | |
407 | Address view_address, | |
408 | section_size_type, | |
409 | unsigned char* reloc_view, | |
410 | section_size_type reloc_view_size); | |
42cacb20 DE |
411 | |
412 | // Return whether SYM is defined by the ABI. | |
413 | bool | |
9c2d0ef9 | 414 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 415 | { |
cf43a2fe | 416 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
417 | } |
418 | ||
419 | // Return the size of the GOT section. | |
420 | section_size_type | |
0e70b911 | 421 | got_size() const |
42cacb20 DE |
422 | { |
423 | gold_assert(this->got_ != NULL); | |
424 | return this->got_->data_size(); | |
425 | } | |
426 | ||
cf43a2fe AM |
427 | // Get the PLT section. |
428 | const Output_data_plt_powerpc<size, big_endian>* | |
429 | plt_section() const | |
430 | { | |
431 | gold_assert(this->plt_ != NULL); | |
432 | return this->plt_; | |
433 | } | |
434 | ||
e5d5f5ed AM |
435 | // Get the IPLT section. |
436 | const Output_data_plt_powerpc<size, big_endian>* | |
437 | iplt_section() const | |
438 | { | |
439 | gold_assert(this->iplt_ != NULL); | |
440 | return this->iplt_; | |
441 | } | |
442 | ||
cf43a2fe AM |
443 | // Get the .glink section. |
444 | const Output_data_glink<size, big_endian>* | |
445 | glink_section() const | |
446 | { | |
447 | gold_assert(this->glink_ != NULL); | |
448 | return this->glink_; | |
449 | } | |
450 | ||
451 | // Get the GOT section. | |
452 | const Output_data_got_powerpc<size, big_endian>* | |
453 | got_section() const | |
454 | { | |
455 | gold_assert(this->got_ != NULL); | |
456 | return this->got_; | |
457 | } | |
458 | ||
26a4e9cb AM |
459 | // Get the GOT section, creating it if necessary. |
460 | Output_data_got_powerpc<size, big_endian>* | |
461 | got_section(Symbol_table*, Layout*); | |
462 | ||
cf43a2fe AM |
463 | Object* |
464 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
465 | const elfcpp::Ehdr<size, big_endian>&); | |
466 | ||
0e70b911 CC |
467 | // Return the number of entries in the GOT. |
468 | unsigned int | |
469 | got_entry_count() const | |
470 | { | |
471 | if (this->got_ == NULL) | |
472 | return 0; | |
473 | return this->got_size() / (size / 8); | |
474 | } | |
475 | ||
476 | // Return the number of entries in the PLT. | |
477 | unsigned int | |
478 | plt_entry_count() const; | |
479 | ||
480 | // Return the offset of the first non-reserved PLT entry. | |
481 | unsigned int | |
482 | first_plt_entry_offset() const; | |
483 | ||
484 | // Return the size of each PLT entry. | |
485 | unsigned int | |
486 | plt_entry_size() const; | |
487 | ||
e81fea4d AM |
488 | // Add any special sections for this symbol to the gc work list. |
489 | // For powerpc64, this adds the code section of a function | |
490 | // descriptor. | |
491 | void | |
492 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
493 | ||
494 | // Handle target specific gc actions when adding a gc reference from | |
495 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
496 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
497 | // section of a function descriptor. | |
498 | void | |
499 | do_gc_add_reference(Symbol_table* symtab, | |
500 | Object* src_obj, | |
501 | unsigned int src_shndx, | |
502 | Object* dst_obj, | |
503 | unsigned int dst_shndx, | |
504 | Address dst_off) const; | |
505 | ||
42cacb20 DE |
506 | private: |
507 | ||
508 | // The class which scans relocations. | |
509 | class Scan | |
510 | { | |
511 | public: | |
bfdfa4cd AM |
512 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
513 | ||
42cacb20 DE |
514 | Scan() |
515 | : issued_non_pic_error_(false) | |
516 | { } | |
517 | ||
95a2c8d6 RS |
518 | static inline int |
519 | get_reference_flags(unsigned int r_type); | |
520 | ||
42cacb20 | 521 | inline void |
ad0f2072 | 522 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 523 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
524 | unsigned int data_shndx, |
525 | Output_section* output_section, | |
526 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
527 | const elfcpp::Sym<size, big_endian>& lsym, |
528 | bool is_discarded); | |
42cacb20 DE |
529 | |
530 | inline void | |
ad0f2072 | 531 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 532 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
533 | unsigned int data_shndx, |
534 | Output_section* output_section, | |
535 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
536 | Symbol* gsym); | |
537 | ||
21bb3914 ST |
538 | inline bool |
539 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
540 | Target_powerpc* , | |
2e702c99 | 541 | Sized_relobj_file<size, big_endian>* , |
21bb3914 | 542 | unsigned int , |
2e702c99 RM |
543 | Output_section* , |
544 | const elfcpp::Rela<size, big_endian>& , | |
545 | unsigned int , | |
546 | const elfcpp::Sym<size, big_endian>&) | |
21bb3914 ST |
547 | { return false; } |
548 | ||
549 | inline bool | |
550 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
551 | Target_powerpc* , | |
2e702c99 RM |
552 | Sized_relobj_file<size, big_endian>* , |
553 | unsigned int , | |
554 | Output_section* , | |
555 | const elfcpp::Rela<size, | |
21bb3914 ST |
556 | big_endian>& , |
557 | unsigned int , Symbol*) | |
558 | { return false; } | |
559 | ||
42cacb20 DE |
560 | private: |
561 | static void | |
6fa2a40b | 562 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
563 | unsigned int r_type); |
564 | ||
565 | static void | |
6fa2a40b | 566 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
567 | unsigned int r_type, Symbol*); |
568 | ||
569 | static void | |
570 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
571 | Target_powerpc* target); | |
572 | ||
573 | void | |
574 | check_non_pic(Relobj*, unsigned int r_type); | |
575 | ||
e5d5f5ed AM |
576 | bool |
577 | reloc_needs_plt_for_ifunc(Sized_relobj_file<size, big_endian>* object, | |
578 | unsigned int r_type); | |
579 | ||
42cacb20 DE |
580 | // Whether we have issued an error about a non-PIC compilation. |
581 | bool issued_non_pic_error_; | |
582 | }; | |
583 | ||
3ea0a085 AM |
584 | Address |
585 | symval_for_branch(Address value, const Sized_symbol<size>* gsym, | |
586 | Powerpc_relobj<size, big_endian>* object, | |
587 | unsigned int *dest_shndx); | |
588 | ||
42cacb20 DE |
589 | // The class which implements relocation. |
590 | class Relocate | |
591 | { | |
592 | public: | |
dd93cd0a AM |
593 | // Use 'at' branch hints when true, 'y' when false. |
594 | // FIXME maybe: set this with an option. | |
595 | static const bool is_isa_v2 = true; | |
596 | ||
597 | enum skip_tls | |
598 | { | |
599 | CALL_NOT_EXPECTED = 0, | |
600 | CALL_EXPECTED = 1, | |
601 | CALL_SKIP = 2 | |
602 | }; | |
603 | ||
604 | Relocate() | |
605 | : call_tls_get_addr_(CALL_NOT_EXPECTED) | |
606 | { } | |
607 | ||
608 | ~Relocate() | |
609 | { | |
610 | if (this->call_tls_get_addr_ != CALL_NOT_EXPECTED) | |
611 | { | |
612 | // FIXME: This needs to specify the location somehow. | |
613 | gold_error(_("missing expected __tls_get_addr call")); | |
614 | } | |
615 | } | |
616 | ||
42cacb20 DE |
617 | // Do a relocation. Return false if the caller should not issue |
618 | // any warnings about this relocation. | |
619 | inline bool | |
620 | relocate(const Relocate_info<size, big_endian>*, Target_powerpc*, | |
031cdbed ILT |
621 | Output_section*, size_t relnum, |
622 | const elfcpp::Rela<size, big_endian>&, | |
42cacb20 DE |
623 | unsigned int r_type, const Sized_symbol<size>*, |
624 | const Symbol_value<size>*, | |
625 | unsigned char*, | |
626 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
627 | section_size_type); | |
628 | ||
dd93cd0a AM |
629 | // This is set if we should skip the next reloc, which should be a |
630 | // call to __tls_get_addr. | |
631 | enum skip_tls call_tls_get_addr_; | |
42cacb20 DE |
632 | }; |
633 | ||
168a4726 AM |
634 | class Relocate_comdat_behavior |
635 | { | |
636 | public: | |
637 | // Decide what the linker should do for relocations that refer to | |
638 | // discarded comdat sections. | |
639 | inline Comdat_behavior | |
640 | get(const char* name) | |
641 | { | |
642 | gold::Default_comdat_behavior default_behavior; | |
643 | Comdat_behavior ret = default_behavior.get(name); | |
644 | if (ret == CB_WARNING) | |
645 | { | |
646 | if (size == 32 | |
647 | && (strcmp(name, ".fixup") == 0 | |
648 | || strcmp(name, ".got2") == 0)) | |
649 | ret = CB_IGNORE; | |
650 | if (size == 64 | |
651 | && (strcmp(name, ".opd") == 0 | |
652 | || strcmp(name, ".toc") == 0 | |
653 | || strcmp(name, ".toc1") == 0)) | |
654 | ret = CB_IGNORE; | |
655 | } | |
656 | return ret; | |
657 | } | |
658 | }; | |
659 | ||
42cacb20 DE |
660 | // A class which returns the size required for a relocation type, |
661 | // used while scanning relocs during a relocatable link. | |
662 | class Relocatable_size_for_reloc | |
663 | { | |
664 | public: | |
665 | unsigned int | |
cf43a2fe AM |
666 | get_size_for_reloc(unsigned int, Relobj*) |
667 | { | |
668 | gold_unreachable(); | |
669 | return 0; | |
670 | } | |
42cacb20 DE |
671 | }; |
672 | ||
dd93cd0a AM |
673 | // Optimize the TLS relocation type based on what we know about the |
674 | // symbol. IS_FINAL is true if the final address of this symbol is | |
675 | // known at link time. | |
676 | ||
677 | tls::Tls_optimization | |
678 | optimize_tls_gd(bool is_final) | |
679 | { | |
680 | // If we are generating a shared library, then we can't do anything | |
681 | // in the linker. | |
682 | if (parameters->options().shared()) | |
683 | return tls::TLSOPT_NONE; | |
684 | ||
685 | if (!is_final) | |
686 | return tls::TLSOPT_TO_IE; | |
687 | return tls::TLSOPT_TO_LE; | |
688 | } | |
689 | ||
690 | tls::Tls_optimization | |
691 | optimize_tls_ld() | |
692 | { | |
693 | if (parameters->options().shared()) | |
694 | return tls::TLSOPT_NONE; | |
695 | ||
696 | return tls::TLSOPT_TO_LE; | |
697 | } | |
698 | ||
699 | tls::Tls_optimization | |
700 | optimize_tls_ie(bool is_final) | |
701 | { | |
702 | if (!is_final || parameters->options().shared()) | |
703 | return tls::TLSOPT_NONE; | |
704 | ||
705 | return tls::TLSOPT_TO_LE; | |
706 | } | |
cf43a2fe | 707 | |
cf43a2fe AM |
708 | // Create glink. |
709 | void | |
710 | make_glink_section(Layout*); | |
42cacb20 | 711 | |
cf43a2fe AM |
712 | // Create the PLT section. |
713 | void | |
40b469d7 | 714 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 715 | |
e5d5f5ed | 716 | void |
40b469d7 | 717 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 718 | |
42cacb20 DE |
719 | // Create a PLT entry for a global symbol. |
720 | void | |
40b469d7 | 721 | make_plt_entry(Symbol_table*, Layout*, Symbol*, |
cf43a2fe | 722 | const elfcpp::Rela<size, big_endian>&, |
e5d5f5ed AM |
723 | const Sized_relobj_file<size, big_endian>* object); |
724 | ||
725 | // Create a PLT entry for a local IFUNC symbol. | |
726 | void | |
40b469d7 | 727 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
e5d5f5ed AM |
728 | const elfcpp::Rela<size, big_endian>&, |
729 | Sized_relobj_file<size, big_endian>*); | |
42cacb20 | 730 | |
dd93cd0a AM |
731 | // Create a GOT entry for local dynamic __tls_get_addr. |
732 | unsigned int | |
733 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
734 | Sized_relobj_file<size, big_endian>* object); | |
735 | ||
42cacb20 | 736 | unsigned int |
dd93cd0a AM |
737 | tlsld_got_offset() const |
738 | { | |
739 | return this->tlsld_got_offset_; | |
740 | } | |
42cacb20 | 741 | |
42cacb20 DE |
742 | // Get the dynamic reloc section, creating it if necessary. |
743 | Reloc_section* | |
744 | rela_dyn_section(Layout*); | |
745 | ||
42cacb20 DE |
746 | // Copy a relocation against a global symbol. |
747 | void | |
ef9beddf | 748 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 749 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
750 | unsigned int shndx, Output_section* output_section, |
751 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
752 | { | |
753 | this->copy_relocs_.copy_reloc(symtab, layout, | |
754 | symtab->get_sized_symbol<size>(sym), | |
755 | object, shndx, output_section, | |
756 | reloc, this->rela_dyn_section(layout)); | |
757 | } | |
758 | ||
759 | // Information about this specific target which we pass to the | |
760 | // general Target structure. | |
761 | static Target::Target_info powerpc_info; | |
762 | ||
763 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
764 | // These values are exposed to the ABI in an incremental link. |
765 | // Do not renumber existing values without changing the version | |
766 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
767 | enum Got_type |
768 | { | |
dd93cd0a AM |
769 | GOT_TYPE_STANDARD, |
770 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
771 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
772 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
773 | }; |
774 | ||
cf43a2fe AM |
775 | // The GOT output section. |
776 | Output_data_got_powerpc<size, big_endian>* got_; | |
777 | // The PLT output section. | |
42cacb20 | 778 | Output_data_plt_powerpc<size, big_endian>* plt_; |
e5d5f5ed AM |
779 | // The IPLT output section. |
780 | Output_data_plt_powerpc<size, big_endian>* iplt_; | |
cf43a2fe AM |
781 | // The .glink output section. |
782 | Output_data_glink<size, big_endian>* glink_; | |
783 | // The dynamic reloc output section. | |
42cacb20 DE |
784 | Reloc_section* rela_dyn_; |
785 | // Relocs saved to avoid a COPY reloc. | |
786 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
787 | // Space for variables copied with a COPY reloc. | |
788 | Output_data_space* dynbss_; | |
dd93cd0a AM |
789 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
790 | unsigned int tlsld_got_offset_; | |
42cacb20 DE |
791 | }; |
792 | ||
793 | template<> | |
794 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
795 | { | |
796 | 32, // size | |
797 | true, // is_big_endian | |
798 | elfcpp::EM_PPC, // machine_code | |
799 | false, // has_make_symbol | |
800 | false, // has_resolve | |
801 | false, // has_code_fill | |
802 | true, // is_default_stack_executable | |
b3ce541e | 803 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
804 | '\0', // wrap_char |
805 | "/usr/lib/ld.so.1", // dynamic_linker | |
806 | 0x10000000, // default_text_segment_address | |
807 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 808 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
809 | false, // isolate_execinstr |
810 | 0, // rosegment_gap | |
8a5e3e08 ILT |
811 | elfcpp::SHN_UNDEF, // small_common_shndx |
812 | elfcpp::SHN_UNDEF, // large_common_shndx | |
813 | 0, // small_common_section_flags | |
05a352e6 DK |
814 | 0, // large_common_section_flags |
815 | NULL, // attributes_section | |
816 | NULL // attributes_vendor | |
42cacb20 DE |
817 | }; |
818 | ||
819 | template<> | |
820 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
821 | { | |
822 | 32, // size | |
823 | false, // is_big_endian | |
824 | elfcpp::EM_PPC, // machine_code | |
825 | false, // has_make_symbol | |
826 | false, // has_resolve | |
827 | false, // has_code_fill | |
828 | true, // is_default_stack_executable | |
b3ce541e | 829 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
830 | '\0', // wrap_char |
831 | "/usr/lib/ld.so.1", // dynamic_linker | |
832 | 0x10000000, // default_text_segment_address | |
833 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 834 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
835 | false, // isolate_execinstr |
836 | 0, // rosegment_gap | |
8a5e3e08 ILT |
837 | elfcpp::SHN_UNDEF, // small_common_shndx |
838 | elfcpp::SHN_UNDEF, // large_common_shndx | |
839 | 0, // small_common_section_flags | |
05a352e6 DK |
840 | 0, // large_common_section_flags |
841 | NULL, // attributes_section | |
842 | NULL // attributes_vendor | |
42cacb20 DE |
843 | }; |
844 | ||
845 | template<> | |
846 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
847 | { | |
848 | 64, // size | |
849 | true, // is_big_endian | |
850 | elfcpp::EM_PPC64, // machine_code | |
851 | false, // has_make_symbol | |
852 | false, // has_resolve | |
853 | false, // has_code_fill | |
854 | true, // is_default_stack_executable | |
b3ce541e | 855 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
856 | '\0', // wrap_char |
857 | "/usr/lib/ld.so.1", // dynamic_linker | |
858 | 0x10000000, // default_text_segment_address | |
859 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 860 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
861 | false, // isolate_execinstr |
862 | 0, // rosegment_gap | |
8a5e3e08 ILT |
863 | elfcpp::SHN_UNDEF, // small_common_shndx |
864 | elfcpp::SHN_UNDEF, // large_common_shndx | |
865 | 0, // small_common_section_flags | |
05a352e6 DK |
866 | 0, // large_common_section_flags |
867 | NULL, // attributes_section | |
868 | NULL // attributes_vendor | |
42cacb20 DE |
869 | }; |
870 | ||
871 | template<> | |
872 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
873 | { | |
874 | 64, // size | |
875 | false, // is_big_endian | |
876 | elfcpp::EM_PPC64, // machine_code | |
877 | false, // has_make_symbol | |
878 | false, // has_resolve | |
879 | false, // has_code_fill | |
880 | true, // is_default_stack_executable | |
b3ce541e | 881 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
882 | '\0', // wrap_char |
883 | "/usr/lib/ld.so.1", // dynamic_linker | |
884 | 0x10000000, // default_text_segment_address | |
885 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 886 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
887 | false, // isolate_execinstr |
888 | 0, // rosegment_gap | |
8a5e3e08 ILT |
889 | elfcpp::SHN_UNDEF, // small_common_shndx |
890 | elfcpp::SHN_UNDEF, // large_common_shndx | |
891 | 0, // small_common_section_flags | |
05a352e6 DK |
892 | 0, // large_common_section_flags |
893 | NULL, // attributes_section | |
894 | NULL // attributes_vendor | |
42cacb20 DE |
895 | }; |
896 | ||
dd93cd0a AM |
897 | inline bool |
898 | is_branch_reloc(unsigned int r_type) | |
899 | { | |
900 | return (r_type == elfcpp::R_POWERPC_REL24 | |
901 | || r_type == elfcpp::R_PPC_PLTREL24 | |
902 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
903 | || r_type == elfcpp::R_POWERPC_REL14 | |
904 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
905 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
906 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
907 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
908 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
909 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
910 | } | |
911 | ||
912 | // If INSN is an opcode that may be used with an @tls operand, return | |
913 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
914 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
915 | uint32_t | |
916 | at_tls_transform(uint32_t insn, unsigned int reg) | |
917 | { | |
918 | if ((insn & (0x3f << 26)) != 31 << 26) | |
919 | return 0; | |
920 | ||
921 | unsigned int rtra; | |
922 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
923 | rtra = insn & ((1 << 26) - (1 << 16)); | |
924 | else if (((insn >> 16) & 0x1f) == reg) | |
925 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
926 | else | |
927 | return 0; | |
928 | ||
929 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
930 | // add -> addi | |
931 | insn = 14 << 26; | |
932 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
933 | && ((insn & (0x1f << 6)) < 14 << 6 | |
934 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
935 | && (insn & (0x1f << 6)) < 24 << 6))) | |
936 | // load and store indexed -> dform | |
937 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
938 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
939 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
940 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
941 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
942 | // lwax -> lwa | |
943 | insn = (58 << 26) | 2; | |
944 | else | |
945 | return 0; | |
946 | insn |= rtra; | |
947 | return insn; | |
948 | } | |
949 | ||
950 | // Modified version of symtab.h class Symbol member | |
951 | // Given a direct absolute or pc-relative static relocation against | |
952 | // the global symbol, this function returns whether a dynamic relocation | |
953 | // is needed. | |
954 | ||
955 | template<int size> | |
956 | bool | |
957 | needs_dynamic_reloc(const Symbol* gsym, int flags) | |
958 | { | |
959 | // No dynamic relocations in a static link! | |
960 | if (parameters->doing_static_link()) | |
961 | return false; | |
962 | ||
963 | // A reference to an undefined symbol from an executable should be | |
964 | // statically resolved to 0, and does not need a dynamic relocation. | |
965 | // This matches gnu ld behavior. | |
966 | if (gsym->is_undefined() && !parameters->options().shared()) | |
967 | return false; | |
968 | ||
969 | // A reference to an absolute symbol does not need a dynamic relocation. | |
970 | if (gsym->is_absolute()) | |
971 | return false; | |
972 | ||
973 | // An absolute reference within a position-independent output file | |
974 | // will need a dynamic relocation. | |
975 | if ((flags & Symbol::ABSOLUTE_REF) | |
976 | && parameters->options().output_is_position_independent()) | |
977 | return true; | |
978 | ||
979 | // A function call that can branch to a local PLT entry does not need | |
980 | // a dynamic relocation. | |
981 | if ((flags & Symbol::FUNCTION_CALL) && gsym->has_plt_offset()) | |
982 | return false; | |
983 | ||
984 | // A reference to any PLT entry in a non-position-independent executable | |
985 | // does not need a dynamic relocation. | |
986 | // Except due to having function descriptors on powerpc64 we don't define | |
987 | // functions to their plt code in an executable, so this doesn't apply. | |
988 | if (size == 32 | |
989 | && !parameters->options().output_is_position_independent() | |
990 | && gsym->has_plt_offset()) | |
991 | return false; | |
992 | ||
993 | // A reference to a symbol defined in a dynamic object or to a | |
994 | // symbol that is preemptible will need a dynamic relocation. | |
995 | if (gsym->is_from_dynobj() | |
996 | || gsym->is_undefined() | |
997 | || gsym->is_preemptible()) | |
998 | return true; | |
999 | ||
1000 | // For all other cases, return FALSE. | |
1001 | return false; | |
1002 | } | |
1003 | ||
1004 | // Modified version of symtab.h class Symbol member | |
1005 | // Whether we should use the PLT offset associated with a symbol for | |
1006 | // a relocation. FLAGS is a set of Reference_flags. | |
1007 | ||
1008 | template<int size> | |
1009 | bool | |
1010 | use_plt_offset(const Symbol* gsym, int flags) | |
1011 | { | |
1012 | // If the symbol doesn't have a PLT offset, then naturally we | |
1013 | // don't want to use it. | |
1014 | if (!gsym->has_plt_offset()) | |
1015 | return false; | |
1016 | ||
1017 | // For a STT_GNU_IFUNC symbol we always have to use the PLT entry. | |
1018 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
1019 | return true; | |
1020 | ||
1021 | // If we are going to generate a dynamic relocation, then we will | |
1022 | // wind up using that, so no need to use the PLT entry. | |
1023 | if (needs_dynamic_reloc<size>(gsym, flags)) | |
1024 | return false; | |
1025 | ||
1026 | // If the symbol is from a dynamic object, we need to use the PLT | |
1027 | // entry. | |
1028 | if (gsym->is_from_dynobj()) | |
1029 | return true; | |
1030 | ||
1031 | // If we are generating a shared object, and gsym symbol is | |
1032 | // undefined or preemptible, we need to use the PLT entry. | |
1033 | if (parameters->options().shared() | |
1034 | && (gsym->is_undefined() || gsym->is_preemptible())) | |
1035 | return true; | |
1036 | ||
1037 | // If gsym is a call to a weak undefined symbol, we need to use | |
1038 | // the PLT entry; the symbol may be defined by a library loaded | |
1039 | // at runtime. | |
1040 | if ((flags & Symbol::FUNCTION_CALL) && gsym->is_weak_undefined()) | |
1041 | return true; | |
1042 | ||
1043 | // Otherwise we can use the regular definition. | |
1044 | return false; | |
1045 | } | |
1046 | ||
42cacb20 DE |
1047 | template<int size, bool big_endian> |
1048 | class Powerpc_relocate_functions | |
1049 | { | |
dd93cd0a | 1050 | public: |
f4baf0d4 | 1051 | enum Overflow_check |
dd93cd0a | 1052 | { |
f4baf0d4 AM |
1053 | CHECK_NONE, |
1054 | CHECK_SIGNED, | |
1055 | CHECK_BITFIELD | |
dd93cd0a AM |
1056 | }; |
1057 | ||
f4baf0d4 | 1058 | enum Status |
dd93cd0a | 1059 | { |
f4baf0d4 AM |
1060 | STATUS_OK, |
1061 | STATUS_OVERFLOW | |
1062 | }; | |
dd93cd0a | 1063 | |
42cacb20 | 1064 | private: |
c9269dff | 1065 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff AM |
1066 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1067 | ||
dd93cd0a AM |
1068 | template<int valsize> |
1069 | static inline bool | |
1070 | has_overflow_signed(Address value) | |
1071 | { | |
1072 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1073 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1074 | limit <<= ((valsize - 1) >> 1); | |
1075 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1076 | return value + limit > (limit << 1) - 1; | |
1077 | } | |
1078 | ||
1079 | template<int valsize> | |
1080 | static inline bool | |
1081 | has_overflow_bitfield(Address value) | |
1082 | { | |
1083 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1084 | limit <<= ((valsize - 1) >> 1); | |
1085 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1086 | return value > (limit << 1) - 1 && value + limit > (limit << 1) - 1; | |
1087 | } | |
1088 | ||
1089 | template<int valsize> | |
f4baf0d4 AM |
1090 | static inline Status |
1091 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1092 | { |
f4baf0d4 | 1093 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1094 | { |
1095 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1096 | return STATUS_OVERFLOW; |
dd93cd0a | 1097 | } |
f4baf0d4 | 1098 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1099 | { |
1100 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1101 | return STATUS_OVERFLOW; |
dd93cd0a | 1102 | } |
f4baf0d4 | 1103 | return STATUS_OK; |
dd93cd0a AM |
1104 | } |
1105 | ||
cf43a2fe | 1106 | // Do a simple RELA relocation |
42cacb20 | 1107 | template<int valsize> |
f4baf0d4 AM |
1108 | static inline Status |
1109 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a AM |
1110 | { |
1111 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
1112 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1113 | elfcpp::Swap<valsize, big_endian>::writeval(wv, value); | |
1114 | return overflowed<valsize>(value, overflow); | |
1115 | } | |
1116 | ||
1117 | template<int valsize> | |
f4baf0d4 | 1118 | static inline Status |
42cacb20 DE |
1119 | rela(unsigned char* view, |
1120 | unsigned int right_shift, | |
c9269dff AM |
1121 | typename elfcpp::Valtype_base<valsize>::Valtype dst_mask, |
1122 | Address value, | |
f4baf0d4 | 1123 | Overflow_check overflow) |
42cacb20 DE |
1124 | { |
1125 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
1126 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1127 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
dd93cd0a | 1128 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1129 | val &= ~dst_mask; |
1130 | reloc &= dst_mask; | |
42cacb20 | 1131 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1132 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1133 | } |
1134 | ||
cf43a2fe | 1135 | // Do a simple RELA relocation, unaligned. |
42cacb20 | 1136 | template<int valsize> |
f4baf0d4 AM |
1137 | static inline Status |
1138 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a AM |
1139 | { |
1140 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, value); | |
1141 | return overflowed<valsize>(value, overflow); | |
1142 | } | |
1143 | ||
1144 | template<int valsize> | |
f4baf0d4 | 1145 | static inline Status |
cf43a2fe AM |
1146 | rela_ua(unsigned char* view, |
1147 | unsigned int right_shift, | |
c9269dff AM |
1148 | typename elfcpp::Valtype_base<valsize>::Valtype dst_mask, |
1149 | Address value, | |
f4baf0d4 | 1150 | Overflow_check overflow) |
42cacb20 | 1151 | { |
c9269dff AM |
1152 | typedef typename elfcpp::Swap_unaligned<valsize, big_endian>::Valtype |
1153 | Valtype; | |
dd93cd0a AM |
1154 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(view); |
1155 | Valtype reloc = value >> right_shift; | |
42cacb20 DE |
1156 | val &= ~dst_mask; |
1157 | reloc &= dst_mask; | |
dd93cd0a AM |
1158 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, val | reloc); |
1159 | return overflowed<valsize>(value >> right_shift, overflow); | |
42cacb20 DE |
1160 | } |
1161 | ||
42cacb20 | 1162 | public: |
dd93cd0a | 1163 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1164 | static inline void |
dd93cd0a | 1165 | addr64(unsigned char* view, Address value) |
f4baf0d4 | 1166 | { This::template rela<64>(view, value, CHECK_NONE); } |
42cacb20 | 1167 | |
dd93cd0a | 1168 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1169 | static inline void |
dd93cd0a | 1170 | addr64_u(unsigned char* view, Address value) |
f4baf0d4 | 1171 | { This::template rela_ua<64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1172 | |
1173 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1174 | static inline Status |
1175 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a AM |
1176 | { return This::template rela<32>(view, value, overflow); } |
1177 | ||
1178 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1179 | static inline Status |
1180 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a AM |
1181 | { return This::template rela_ua<32>(view, value, overflow); } |
1182 | ||
1183 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1184 | static inline Status |
1185 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1186 | { |
f4baf0d4 AM |
1187 | Status stat = This::template rela<32>(view, 0, 0x03fffffc, value, overflow); |
1188 | if (overflow != CHECK_NONE && (value & 3) != 0) | |
1189 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1190 | return stat; |
1191 | } | |
42cacb20 DE |
1192 | |
1193 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1194 | static inline Status |
1195 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1196 | { return This::template rela<16>(view, value, overflow); } |
42cacb20 | 1197 | |
dd93cd0a | 1198 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1199 | static inline Status |
1200 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1201 | { return This::template rela_ua<16>(view, value, overflow); } |
42cacb20 | 1202 | |
dd93cd0a | 1203 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1204 | static inline Status |
1205 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1206 | { |
f4baf0d4 AM |
1207 | Status stat = This::template rela<16>(view, 0, 0xfffc, value, overflow); |
1208 | if (overflow != CHECK_NONE && (value & 3) != 0) | |
1209 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1210 | return stat; |
1211 | } | |
42cacb20 | 1212 | |
42cacb20 DE |
1213 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1214 | static inline void | |
dd93cd0a | 1215 | addr16_hi(unsigned char* view, Address value) |
f4baf0d4 | 1216 | { This::template rela<16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1217 | |
c9269dff | 1218 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1219 | static inline void |
dd93cd0a AM |
1220 | addr16_ha(unsigned char* view, Address value) |
1221 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1222 | |
dd93cd0a | 1223 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1224 | static inline void |
dd93cd0a | 1225 | addr16_hi2(unsigned char* view, Address value) |
f4baf0d4 | 1226 | { This::template rela<16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1227 | |
dd93cd0a | 1228 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1229 | static inline void |
dd93cd0a AM |
1230 | addr16_ha2(unsigned char* view, Address value) |
1231 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1232 | |
dd93cd0a | 1233 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1234 | static inline void |
dd93cd0a | 1235 | addr16_hi3(unsigned char* view, Address value) |
f4baf0d4 | 1236 | { This::template rela<16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1237 | |
dd93cd0a | 1238 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1239 | static inline void |
dd93cd0a AM |
1240 | addr16_ha3(unsigned char* view, Address value) |
1241 | { This::addr16_hi3(view, value + 0x8000); } | |
1242 | ||
1243 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1244 | static inline Status |
1245 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1246 | { |
f4baf0d4 AM |
1247 | Status stat = This::template rela<32>(view, 0, 0xfffc, value, overflow); |
1248 | if (overflow != CHECK_NONE && (value & 3) != 0) | |
1249 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1250 | return stat; |
1251 | } | |
cf43a2fe AM |
1252 | }; |
1253 | ||
c9269dff AM |
1254 | // Stash away the index of .got2 or .opd in a relocatable object, if |
1255 | // such a section exists. | |
cf43a2fe AM |
1256 | |
1257 | template<int size, bool big_endian> | |
1258 | bool | |
1259 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1260 | Read_symbols_data* sd) | |
1261 | { | |
c9269dff AM |
1262 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1263 | const unsigned char* namesu = sd->section_names->data(); | |
1264 | const char* names = reinterpret_cast<const char*>(namesu); | |
1265 | section_size_type names_size = sd->section_names_size; | |
1266 | const unsigned char* s; | |
1267 | ||
1268 | s = this->find_shdr(pshdrs, size == 32 ? ".got2" : ".opd", | |
1269 | names, names_size, NULL); | |
1270 | if (s != NULL) | |
1271 | { | |
1272 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1273 | this->special_ = ndx; | |
1274 | } | |
1275 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); | |
1276 | } | |
1277 | ||
1278 | // Examine .rela.opd to build info about function entry points. | |
1279 | ||
1280 | template<int size, bool big_endian> | |
1281 | void | |
1282 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
1283 | size_t reloc_count, | |
1284 | const unsigned char* prelocs, | |
1285 | const unsigned char* plocal_syms) | |
1286 | { | |
1287 | if (size == 64) | |
cf43a2fe | 1288 | { |
c9269dff AM |
1289 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
1290 | Reltype; | |
1291 | const int reloc_size | |
1292 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
1293 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
ec4dbad3 AM |
1294 | Address expected_off = 0; |
1295 | bool regular = true; | |
1296 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
1297 | |
1298 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 1299 | { |
c9269dff AM |
1300 | Reltype reloc(prelocs); |
1301 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
1302 | = reloc.get_r_info(); | |
1303 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
1304 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
1305 | { | |
1306 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1307 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
1308 | bool is_ordinary; | |
1309 | unsigned int shndx; | |
1310 | if (r_sym < this->local_symbol_count()) | |
1311 | { | |
1312 | typename elfcpp::Sym<size, big_endian> | |
1313 | lsym(plocal_syms + r_sym * sym_size); | |
1314 | shndx = lsym.get_st_shndx(); | |
1315 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1316 | value = lsym.get_st_value(); | |
1317 | } | |
1318 | else | |
1319 | shndx = this->symbol_section_and_value(r_sym, &value, | |
1320 | &is_ordinary); | |
1321 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
1322 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
1323 | if (i == 2) |
1324 | { | |
1325 | expected_off = reloc.get_r_offset(); | |
1326 | opd_ent_size = expected_off; | |
1327 | } | |
1328 | else if (expected_off != reloc.get_r_offset()) | |
1329 | regular = false; | |
1330 | expected_off += opd_ent_size; | |
1331 | } | |
1332 | else if (r_type == elfcpp::R_PPC64_TOC) | |
1333 | { | |
1334 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
1335 | regular = false; | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
1340 | this->name().c_str(), r_type); | |
1341 | regular = false; | |
c9269dff AM |
1342 | } |
1343 | } | |
ec4dbad3 AM |
1344 | if (reloc_count <= 2) |
1345 | opd_ent_size = this->section_size(this->opd_shndx()); | |
1346 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
1347 | regular = false; | |
1348 | if (!regular) | |
1349 | { | |
1350 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
1351 | this->name().c_str()); | |
1352 | opd_ent_size = 0; | |
1353 | } | |
c9269dff AM |
1354 | } |
1355 | } | |
1356 | ||
1357 | template<int size, bool big_endian> | |
1358 | void | |
1359 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
1360 | { | |
1361 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
1362 | if (size == 64) | |
1363 | { | |
1364 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
1365 | p != rd->relocs.end(); | |
1366 | ++p) | |
1367 | { | |
1368 | if (p->data_shndx == this->opd_shndx()) | |
1369 | { | |
ec4dbad3 AM |
1370 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
1371 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
1372 | if (opd_size != 0) | |
1373 | { | |
1374 | this->init_opd(opd_size); | |
1375 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
1376 | rd->local_symbols->data()); | |
1377 | } | |
c9269dff AM |
1378 | break; |
1379 | } | |
cf43a2fe AM |
1380 | } |
1381 | } | |
cf43a2fe AM |
1382 | } |
1383 | ||
26a4e9cb AM |
1384 | // Set up some symbols, then perform Sized_relobj_file method. |
1385 | ||
1386 | template<int size, bool big_endian> | |
1387 | void | |
1388 | Powerpc_relobj<size, big_endian>::do_scan_relocs(Symbol_table* symtab, | |
1389 | Layout* layout, | |
1390 | Read_relocs_data* rd) | |
1391 | { | |
1392 | if (size == 32) | |
1393 | { | |
bb66a627 AM |
1394 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
1395 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
1396 | // non-relative dynamic relocs). The proper value will be |
1397 | // updated later. | |
1398 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
1399 | if (gotsym != NULL && gotsym->is_undefined()) | |
1400 | { | |
1401 | Target_powerpc<size, big_endian>* target = | |
1402 | static_cast<Target_powerpc<size, big_endian>*>( | |
1403 | parameters->sized_target<size, big_endian>()); | |
1404 | Output_data_got_powerpc<size, big_endian>* got | |
1405 | = target->got_section(symtab, layout); | |
1406 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
1407 | Symbol_table::PREDEFINED, | |
1408 | got, 0, 0, | |
1409 | elfcpp::STT_OBJECT, | |
bb66a627 | 1410 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
1411 | elfcpp::STV_HIDDEN, 0, |
1412 | false, false); | |
1413 | } | |
1414 | ||
1415 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
1416 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
1417 | if (sdasym != NULL && sdasym->is_undefined()) | |
1418 | { | |
1419 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
1420 | Output_section* os | |
1421 | = layout->add_output_section_data(".sdata", 0, | |
1422 | elfcpp::SHF_ALLOC | |
1423 | | elfcpp::SHF_WRITE, | |
1424 | sdata, ORDER_SMALL_DATA, false); | |
1425 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
1426 | Symbol_table::PREDEFINED, | |
1427 | os, 32768, 0, elfcpp::STT_OBJECT, | |
1428 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
1429 | 0, false, false); | |
1430 | } | |
1431 | } | |
1432 | Sized_relobj_file<size, big_endian>::do_scan_relocs(symtab, layout, rd); | |
1433 | } | |
1434 | ||
cf43a2fe AM |
1435 | // Set up PowerPC target specific relobj. |
1436 | ||
1437 | template<int size, bool big_endian> | |
1438 | Object* | |
1439 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
1440 | const std::string& name, | |
1441 | Input_file* input_file, | |
1442 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
1443 | { | |
1444 | int et = ehdr.get_e_type(); | |
957564c9 AS |
1445 | // ET_EXEC files are valid input for --just-symbols/-R, |
1446 | // and we treat them as relocatable objects. | |
1447 | if (et == elfcpp::ET_REL | |
1448 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
1449 | { |
1450 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 1451 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
1452 | obj->setup(); |
1453 | return obj; | |
1454 | } | |
1455 | else if (et == elfcpp::ET_DYN) | |
1456 | { | |
1457 | Sized_dynobj<size, big_endian>* obj = | |
c9269dff | 1458 | new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
1459 | obj->setup(); |
1460 | return obj; | |
1461 | } | |
1462 | else | |
1463 | { | |
c9269dff | 1464 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
1465 | return NULL; |
1466 | } | |
1467 | } | |
1468 | ||
1469 | template<int size, bool big_endian> | |
1470 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
1471 | { | |
1472 | public: | |
1473 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
1474 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
1475 | ||
1476 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
1477 | : Output_data_got<size, big_endian>(), | |
1478 | symtab_(symtab), layout_(layout), | |
1479 | header_ent_cnt_(size == 32 ? 3 : 1), | |
1480 | header_index_(size == 32 ? 0x2000 : 0) | |
1481 | {} | |
1482 | ||
1483 | class Got_entry; | |
1484 | ||
1485 | // Create a new GOT entry and return its offset. | |
1486 | unsigned int | |
1487 | add_got_entry(Got_entry got_entry) | |
42cacb20 | 1488 | { |
cf43a2fe AM |
1489 | this->reserve_ent(); |
1490 | return Output_data_got<size, big_endian>::add_got_entry(got_entry); | |
1491 | } | |
42cacb20 | 1492 | |
cf43a2fe AM |
1493 | // Create a pair of new GOT entries and return the offset of the first. |
1494 | unsigned int | |
1495 | add_got_entry_pair(Got_entry got_entry_1, Got_entry got_entry_2) | |
1496 | { | |
1497 | this->reserve_ent(2); | |
1498 | return Output_data_got<size, big_endian>::add_got_entry_pair(got_entry_1, | |
1499 | got_entry_2); | |
1500 | } | |
42cacb20 | 1501 | |
dd93cd0a AM |
1502 | unsigned int |
1503 | add_constant_pair(Valtype c1, Valtype c2) | |
1504 | { | |
1505 | this->reserve_ent(2); | |
1506 | unsigned int got_offset = this->add_constant(c1); | |
1507 | this->add_constant(c2); | |
1508 | return got_offset; | |
1509 | } | |
1510 | ||
1511 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
1512 | unsigned int |
1513 | g_o_t() const | |
1514 | { | |
1515 | return this->got_offset(this->header_index_); | |
42cacb20 | 1516 | } |
cf43a2fe | 1517 | |
dd93cd0a AM |
1518 | // Offset of base used to access the GOT/TOC. |
1519 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 1520 | Valtype |
dd93cd0a AM |
1521 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
1522 | { | |
1523 | if (size == 32) | |
1524 | return this->g_o_t(); | |
1525 | else | |
1526 | return (this->output_section()->address() | |
1527 | + object->toc_base_offset() | |
1528 | - this->address()); | |
1529 | } | |
1530 | ||
cf43a2fe AM |
1531 | // Ensure our GOT has a header. |
1532 | void | |
1533 | set_final_data_size() | |
1534 | { | |
1535 | if (this->header_ent_cnt_ != 0) | |
1536 | this->make_header(); | |
1537 | Output_data_got<size, big_endian>::set_final_data_size(); | |
1538 | } | |
1539 | ||
1540 | // First word of GOT header needs some values that are not | |
1541 | // handled by Output_data_got so poke them in here. | |
1542 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
1543 | void | |
1544 | do_write(Output_file* of) | |
1545 | { | |
c9824451 AM |
1546 | Valtype val = 0; |
1547 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
1548 | val = this->layout_->dynamic_section()->address(); | |
1549 | if (size == 64) | |
1550 | val = this->output_section()->address() + 0x8000; | |
1551 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
1552 | Output_data_got<size, big_endian>::do_write(of); |
1553 | } | |
1554 | ||
1555 | private: | |
1556 | void | |
1557 | reserve_ent(unsigned int cnt = 1) | |
1558 | { | |
1559 | if (this->header_ent_cnt_ == 0) | |
1560 | return; | |
1561 | if (this->num_entries() + cnt > this->header_index_) | |
1562 | this->make_header(); | |
1563 | } | |
1564 | ||
1565 | void | |
1566 | make_header() | |
1567 | { | |
1568 | this->header_ent_cnt_ = 0; | |
1569 | this->header_index_ = this->num_entries(); | |
1570 | if (size == 32) | |
1571 | { | |
1572 | Output_data_got<size, big_endian>::add_constant(0); | |
1573 | Output_data_got<size, big_endian>::add_constant(0); | |
1574 | Output_data_got<size, big_endian>::add_constant(0); | |
1575 | ||
1576 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
1577 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
1578 | if (gotsym != NULL) | |
1579 | { | |
1580 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
1581 | sym->set_value(this->g_o_t()); | |
1582 | } | |
1583 | else | |
1584 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
1585 | Symbol_table::PREDEFINED, | |
1586 | this, this->g_o_t(), 0, | |
1587 | elfcpp::STT_OBJECT, | |
1588 | elfcpp::STB_LOCAL, | |
1589 | elfcpp::STV_HIDDEN, 0, | |
1590 | false, false); | |
cf43a2fe AM |
1591 | } |
1592 | else | |
1593 | Output_data_got<size, big_endian>::add_constant(0); | |
1594 | } | |
1595 | ||
1596 | // Stashed pointers. | |
1597 | Symbol_table* symtab_; | |
1598 | Layout* layout_; | |
1599 | ||
1600 | // GOT header size. | |
1601 | unsigned int header_ent_cnt_; | |
1602 | // GOT header index. | |
1603 | unsigned int header_index_; | |
42cacb20 DE |
1604 | }; |
1605 | ||
1606 | // Get the GOT section, creating it if necessary. | |
1607 | ||
1608 | template<int size, bool big_endian> | |
cf43a2fe | 1609 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
1610 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
1611 | Layout* layout) | |
1612 | { | |
1613 | if (this->got_ == NULL) | |
1614 | { | |
1615 | gold_assert(symtab != NULL && layout != NULL); | |
1616 | ||
cf43a2fe AM |
1617 | this->got_ |
1618 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
1619 | |
1620 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
1621 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 1622 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
1623 | } |
1624 | ||
1625 | return this->got_; | |
1626 | } | |
1627 | ||
1628 | // Get the dynamic reloc section, creating it if necessary. | |
1629 | ||
1630 | template<int size, bool big_endian> | |
1631 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
1632 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1633 | { | |
1634 | if (this->rela_dyn_ == NULL) | |
1635 | { | |
1636 | gold_assert(layout != NULL); | |
1637 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
1638 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
1639 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
1640 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
1641 | } |
1642 | return this->rela_dyn_; | |
1643 | } | |
1644 | ||
1645 | // A class to handle the PLT data. | |
1646 | ||
1647 | template<int size, bool big_endian> | |
cf43a2fe | 1648 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
1649 | { |
1650 | public: | |
1651 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1652 | size, big_endian> Reloc_section; | |
1653 | ||
e5d5f5ed AM |
1654 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
1655 | Reloc_section* plt_rel, | |
1656 | unsigned int reserved_size, | |
1657 | const char* name) | |
1658 | : Output_section_data_build(size == 32 ? 4 : 8), | |
1659 | rel_(plt_rel), | |
1660 | targ_(targ), | |
1661 | initial_plt_entry_size_(reserved_size), | |
1662 | name_(name) | |
1663 | { } | |
42cacb20 DE |
1664 | |
1665 | // Add an entry to the PLT. | |
03e25981 | 1666 | void |
cf43a2fe | 1667 | add_entry(Symbol*); |
42cacb20 | 1668 | |
03e25981 | 1669 | void |
e5d5f5ed AM |
1670 | add_ifunc_entry(Symbol*); |
1671 | ||
03e25981 | 1672 | void |
e5d5f5ed AM |
1673 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
1674 | ||
42cacb20 | 1675 | // Return the .rela.plt section data. |
e5d5f5ed | 1676 | Reloc_section* |
cf43a2fe AM |
1677 | rel_plt() const |
1678 | { | |
42cacb20 DE |
1679 | return this->rel_; |
1680 | } | |
1681 | ||
0e70b911 CC |
1682 | // Return the number of PLT entries. |
1683 | unsigned int | |
1684 | entry_count() const | |
d83ce4e3 | 1685 | { |
e5d5f5ed | 1686 | return ((this->current_data_size() - this->initial_plt_entry_size_) |
d83ce4e3 AM |
1687 | / plt_entry_size); |
1688 | } | |
0e70b911 CC |
1689 | |
1690 | // Return the offset of the first non-reserved PLT entry. | |
e5d5f5ed | 1691 | unsigned int |
0e70b911 | 1692 | first_plt_entry_offset() |
e5d5f5ed | 1693 | { return this->initial_plt_entry_size_; } |
0e70b911 CC |
1694 | |
1695 | // Return the size of a PLT entry. | |
1696 | static unsigned int | |
1697 | get_plt_entry_size() | |
cf43a2fe | 1698 | { return plt_entry_size; } |
0e70b911 | 1699 | |
42cacb20 | 1700 | protected: |
42cacb20 | 1701 | void |
cf43a2fe | 1702 | do_adjust_output_section(Output_section* os) |
42cacb20 | 1703 | { |
cf43a2fe | 1704 | os->set_entsize(0); |
42cacb20 DE |
1705 | } |
1706 | ||
6ce78956 AM |
1707 | // Write to a map file. |
1708 | void | |
1709 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 1710 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 1711 | |
cf43a2fe AM |
1712 | private: |
1713 | // The size of an entry in the PLT. | |
1714 | static const int plt_entry_size = size == 32 ? 4 : 24; | |
cf43a2fe | 1715 | |
42cacb20 DE |
1716 | // Write out the PLT data. |
1717 | void | |
1718 | do_write(Output_file*); | |
1719 | ||
1720 | // The reloc section. | |
1721 | Reloc_section* rel_; | |
cf43a2fe AM |
1722 | // Allows access to .glink for do_write. |
1723 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
1724 | // The size of the first reserved entry. |
1725 | int initial_plt_entry_size_; | |
1726 | // What to report in map file. | |
1727 | const char *name_; | |
42cacb20 DE |
1728 | }; |
1729 | ||
e5d5f5ed | 1730 | // Add an entry to the PLT. |
42cacb20 DE |
1731 | |
1732 | template<int size, bool big_endian> | |
03e25981 | 1733 | void |
e5d5f5ed | 1734 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 1735 | { |
e5d5f5ed AM |
1736 | if (!gsym->has_plt_offset()) |
1737 | { | |
1738 | off_t off = this->current_data_size(); | |
1739 | if (off == 0) | |
1740 | off += this->first_plt_entry_offset(); | |
1741 | gsym->set_plt_offset(off); | |
1742 | gsym->set_needs_dynsym_entry(); | |
1743 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
1744 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
1745 | off += plt_entry_size; | |
1746 | this->set_current_data_size(off); | |
1747 | } | |
42cacb20 DE |
1748 | } |
1749 | ||
e5d5f5ed | 1750 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
1751 | |
1752 | template<int size, bool big_endian> | |
03e25981 | 1753 | void |
e5d5f5ed | 1754 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 1755 | { |
cf43a2fe AM |
1756 | if (!gsym->has_plt_offset()) |
1757 | { | |
1758 | off_t off = this->current_data_size(); | |
cf43a2fe | 1759 | gsym->set_plt_offset(off); |
e5d5f5ed AM |
1760 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
1761 | if (size == 64) | |
1762 | dynrel = elfcpp::R_PPC64_JMP_IREL; | |
1763 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
1764 | off += plt_entry_size; | |
1765 | this->set_current_data_size(off); | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | // Add an entry for a local ifunc symbol to the IPLT. | |
1770 | ||
1771 | template<int size, bool big_endian> | |
03e25981 | 1772 | void |
e5d5f5ed AM |
1773 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
1774 | Sized_relobj_file<size, big_endian>* relobj, | |
1775 | unsigned int local_sym_index) | |
1776 | { | |
1777 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
1778 | { | |
1779 | off_t off = this->current_data_size(); | |
1780 | relobj->set_local_plt_offset(local_sym_index, off); | |
1781 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
1782 | if (size == 64) | |
1783 | dynrel = elfcpp::R_PPC64_JMP_IREL; | |
1784 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
1785 | this, off, 0); | |
cf43a2fe AM |
1786 | off += plt_entry_size; |
1787 | this->set_current_data_size(off); | |
1788 | } | |
42cacb20 DE |
1789 | } |
1790 | ||
dd93cd0a AM |
1791 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
1792 | static const uint32_t add_3_3_2 = 0x7c631214; | |
1793 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
1794 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
1795 | static const uint32_t add_12_2_11 = 0x7d825a14; | |
1796 | static const uint32_t addi_11_11 = 0x396b0000; | |
1797 | static const uint32_t addi_12_12 = 0x398c0000; | |
1798 | static const uint32_t addi_2_2 = 0x38420000; | |
1799 | static const uint32_t addi_3_2 = 0x38620000; | |
1800 | static const uint32_t addi_3_3 = 0x38630000; | |
1801 | static const uint32_t addis_0_2 = 0x3c020000; | |
1802 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
c9269dff AM |
1803 | static const uint32_t addis_11_11 = 0x3d6b0000; |
1804 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
1805 | static const uint32_t addis_12_12 = 0x3d8c0000; | |
dd93cd0a AM |
1806 | static const uint32_t addis_12_2 = 0x3d820000; |
1807 | static const uint32_t addis_3_2 = 0x3c620000; | |
1808 | static const uint32_t addis_3_13 = 0x3c6d0000; | |
c9269dff AM |
1809 | static const uint32_t b = 0x48000000; |
1810 | static const uint32_t bcl_20_31 = 0x429f0005; | |
1811 | static const uint32_t bctr = 0x4e800420; | |
f3a0ed29 | 1812 | static const uint32_t blr = 0x4e800020; |
c9269dff | 1813 | static const uint32_t blrl = 0x4e800021; |
dd93cd0a AM |
1814 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
1815 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
1816 | static const uint32_t ld_0_1 = 0xe8010000; |
1817 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a AM |
1818 | static const uint32_t ld_11_12 = 0xe96c0000; |
1819 | static const uint32_t ld_11_2 = 0xe9620000; | |
1820 | static const uint32_t ld_2_1 = 0xe8410000; | |
1821 | static const uint32_t ld_2_11 = 0xe84b0000; | |
1822 | static const uint32_t ld_2_12 = 0xe84c0000; | |
1823 | static const uint32_t ld_2_2 = 0xe8420000; | |
f3a0ed29 | 1824 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 1825 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 1826 | static const uint32_t li_12_0 = 0x39800000; |
dd93cd0a | 1827 | static const uint32_t lis_0_0 = 0x3c000000; |
c9269dff AM |
1828 | static const uint32_t lis_11 = 0x3d600000; |
1829 | static const uint32_t lis_12 = 0x3d800000; | |
c9269dff AM |
1830 | static const uint32_t lwz_0_12 = 0x800c0000; |
1831 | static const uint32_t lwz_11_11 = 0x816b0000; | |
1832 | static const uint32_t lwz_11_30 = 0x817e0000; | |
1833 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 1834 | static const uint32_t lwzu_0_12 = 0x840c0000; |
f3a0ed29 | 1835 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 1836 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 1837 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
1838 | static const uint32_t mflr_12 = 0x7d8802a6; |
1839 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
1840 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
1841 | static const uint32_t mtlr_0 = 0x7c0803a6; | |
c9269dff | 1842 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 1843 | static const uint32_t nop = 0x60000000; |
c9269dff | 1844 | static const uint32_t ori_0_0_0 = 0x60000000; |
f3a0ed29 AM |
1845 | static const uint32_t std_0_1 = 0xf8010000; |
1846 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 1847 | static const uint32_t std_2_1 = 0xf8410000; |
f3a0ed29 AM |
1848 | static const uint32_t stfd_0_1 = 0xd8010000; |
1849 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 1850 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
42cacb20 DE |
1851 | |
1852 | // Write out the PLT. | |
1853 | ||
1854 | template<int size, bool big_endian> | |
1855 | void | |
1856 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
1857 | { | |
cf43a2fe AM |
1858 | if (size == 32) |
1859 | { | |
1860 | const off_t offset = this->offset(); | |
1861 | const section_size_type oview_size | |
1862 | = convert_to_section_size_type(this->data_size()); | |
1863 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1864 | unsigned char* pov = oview; | |
1865 | unsigned char* endpov = oview + oview_size; | |
1866 | ||
e5d5f5ed | 1867 | // The address of the .glink branch table |
cf43a2fe AM |
1868 | const Output_data_glink<size, big_endian>* glink |
1869 | = this->targ_->glink_section(); | |
1870 | elfcpp::Elf_types<32>::Elf_Addr branch_tab | |
1871 | = glink->address() + glink->pltresolve(); | |
1872 | ||
1873 | while (pov < endpov) | |
1874 | { | |
1875 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
1876 | pov += 4; | |
1877 | branch_tab += 4; | |
1878 | } | |
1879 | ||
1880 | of->write_output_view(offset, oview_size, oview); | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | // Create the PLT section. | |
1885 | ||
1886 | template<int size, bool big_endian> | |
1887 | void | |
40b469d7 AM |
1888 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
1889 | Layout* layout) | |
cf43a2fe AM |
1890 | { |
1891 | if (this->plt_ == NULL) | |
1892 | { | |
40b469d7 AM |
1893 | if (this->got_ == NULL) |
1894 | this->got_section(symtab, layout); | |
1895 | ||
cf43a2fe AM |
1896 | if (this->glink_ == NULL) |
1897 | make_glink_section(layout); | |
1898 | ||
1899 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
1900 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
1901 | // needs to include .rela.plt in it's range. | |
1902 | this->rela_dyn_section(layout); | |
1903 | ||
e5d5f5ed AM |
1904 | Reloc_section* plt_rel = new Reloc_section(false); |
1905 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
1906 | elfcpp::SHF_ALLOC, plt_rel, | |
1907 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
1908 | this->plt_ | |
1909 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
1910 | size == 32 ? 0 : 24, | |
1911 | "** PLT"); | |
cf43a2fe AM |
1912 | layout->add_output_section_data(".plt", |
1913 | (size == 32 | |
1914 | ? elfcpp::SHT_PROGBITS | |
1915 | : elfcpp::SHT_NOBITS), | |
1916 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
1917 | this->plt_, | |
1918 | (size == 32 | |
1919 | ? ORDER_SMALL_DATA | |
1920 | : ORDER_SMALL_BSS), | |
1921 | false); | |
1922 | } | |
1923 | } | |
1924 | ||
e5d5f5ed AM |
1925 | // Create the IPLT section. |
1926 | ||
1927 | template<int size, bool big_endian> | |
1928 | void | |
40b469d7 AM |
1929 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
1930 | Layout* layout) | |
e5d5f5ed AM |
1931 | { |
1932 | if (this->iplt_ == NULL) | |
1933 | { | |
40b469d7 | 1934 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
1935 | |
1936 | Reloc_section* iplt_rel = new Reloc_section(false); | |
1937 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
1938 | this->iplt_ | |
1939 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
1940 | 0, "** IPLT"); | |
1941 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
1942 | } |
1943 | } | |
1944 | ||
cf43a2fe AM |
1945 | // A class to handle .glink. |
1946 | ||
1947 | template<int size, bool big_endian> | |
1948 | class Output_data_glink : public Output_section_data | |
1949 | { | |
1950 | public: | |
c9269dff AM |
1951 | static const int pltresolve_size = 16*4; |
1952 | ||
cf43a2fe AM |
1953 | Output_data_glink(Target_powerpc<size, big_endian>*); |
1954 | ||
1955 | // Add an entry | |
1956 | void | |
c9824451 AM |
1957 | add_entry(const Sized_relobj_file<size, big_endian>*, |
1958 | const Symbol*, | |
1959 | const elfcpp::Rela<size, big_endian>&); | |
e5d5f5ed AM |
1960 | |
1961 | void | |
c9824451 AM |
1962 | add_entry(const Sized_relobj_file<size, big_endian>*, |
1963 | unsigned int, | |
1964 | const elfcpp::Rela<size, big_endian>&); | |
cf43a2fe AM |
1965 | |
1966 | unsigned int | |
c9824451 | 1967 | find_entry(const Symbol*) const; |
e5d5f5ed AM |
1968 | |
1969 | unsigned int | |
c9824451 AM |
1970 | find_entry(const Sized_relobj_file<size, big_endian>*, unsigned int) const; |
1971 | ||
1972 | unsigned int | |
1973 | find_entry(const Sized_relobj_file<size, big_endian>*, | |
1974 | const Symbol*, | |
1975 | const elfcpp::Rela<size, big_endian>&) const; | |
1976 | ||
1977 | unsigned int | |
1978 | find_entry(const Sized_relobj_file<size, big_endian>*, | |
1979 | unsigned int, | |
1980 | const elfcpp::Rela<size, big_endian>&) const; | |
cf43a2fe AM |
1981 | |
1982 | unsigned int | |
1983 | glink_entry_size() const | |
1984 | { | |
1985 | if (size == 32) | |
1986 | return 4 * 4; | |
1987 | else | |
1988 | // FIXME: We should be using multiple glink sections for | |
1989 | // stubs to support > 33M applications. | |
1990 | return 8 * 4; | |
1991 | } | |
1992 | ||
1993 | off_t | |
1994 | pltresolve() const | |
1995 | { | |
1996 | return this->pltresolve_; | |
1997 | } | |
1998 | ||
6ce78956 AM |
1999 | protected: |
2000 | // Write to a map file. | |
2001 | void | |
2002 | do_print_to_mapfile(Mapfile* mapfile) const | |
2003 | { mapfile->print_output_data(this, _("** glink")); } | |
2004 | ||
cf43a2fe | 2005 | private: |
cf43a2fe AM |
2006 | void |
2007 | set_final_data_size(); | |
2008 | ||
2009 | // Write out .glink | |
2010 | void | |
2011 | do_write(Output_file*); | |
2012 | ||
d1a8cabd | 2013 | class Glink_sym_ent |
cf43a2fe | 2014 | { |
d1a8cabd | 2015 | public: |
c9824451 AM |
2016 | Glink_sym_ent(const Symbol* sym) |
2017 | : sym_(sym), object_(0), addend_(0), locsym_(0) | |
2018 | { } | |
2019 | ||
2020 | Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object, | |
2021 | unsigned int locsym_index) | |
2022 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) | |
2023 | { } | |
2024 | ||
2025 | Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object, | |
2026 | const Symbol* sym, | |
2027 | const elfcpp::Rela<size, big_endian>& reloc) | |
e5d5f5ed | 2028 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
2029 | { |
2030 | if (size != 32) | |
2031 | this->addend_ = reloc.get_r_addend(); | |
d1a8cabd AM |
2032 | else if (parameters->options().output_is_position_independent() |
2033 | && (elfcpp::elf_r_type<size>(reloc.get_r_info()) | |
2034 | == elfcpp::R_PPC_PLTREL24)) | |
cf43a2fe | 2035 | { |
d1a8cabd | 2036 | this->addend_ = reloc.get_r_addend(); |
e5d5f5ed | 2037 | if (this->addend_ >= 32768) |
d1a8cabd | 2038 | this->object_ = object; |
cf43a2fe AM |
2039 | } |
2040 | } | |
2041 | ||
c9824451 AM |
2042 | Glink_sym_ent(const Sized_relobj_file<size, big_endian>* object, |
2043 | unsigned int locsym_index, | |
2044 | const elfcpp::Rela<size, big_endian>& reloc) | |
e5d5f5ed AM |
2045 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
2046 | { | |
2047 | if (size != 32) | |
2048 | this->addend_ = reloc.get_r_addend(); | |
2049 | else if (parameters->options().output_is_position_independent() | |
2050 | && (elfcpp::elf_r_type<size>(reloc.get_r_info()) | |
2051 | == elfcpp::R_PPC_PLTREL24)) | |
2052 | this->addend_ = reloc.get_r_addend(); | |
2053 | } | |
2054 | ||
cf43a2fe AM |
2055 | bool operator==(const Glink_sym_ent& that) const |
2056 | { | |
2057 | return (this->sym_ == that.sym_ | |
2058 | && this->object_ == that.object_ | |
e5d5f5ed AM |
2059 | && this->addend_ == that.addend_ |
2060 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 2061 | } |
c9269dff AM |
2062 | |
2063 | const Symbol* sym_; | |
e5d5f5ed AM |
2064 | const Sized_relobj_file<size, big_endian>* object_; |
2065 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
2066 | unsigned int locsym_; | |
cf43a2fe AM |
2067 | }; |
2068 | ||
d1a8cabd | 2069 | class Glink_sym_ent_hash |
cf43a2fe | 2070 | { |
d1a8cabd | 2071 | public: |
cf43a2fe AM |
2072 | size_t operator()(const Glink_sym_ent& ent) const |
2073 | { | |
2074 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
2075 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
2076 | ^ ent.addend_ |
2077 | ^ ent.locsym_); | |
cf43a2fe AM |
2078 | } |
2079 | }; | |
2080 | ||
d1a8cabd | 2081 | // Map sym/object/addend to index. |
cf43a2fe AM |
2082 | typedef Unordered_map<Glink_sym_ent, unsigned int, |
2083 | Glink_sym_ent_hash> Glink_entries; | |
2084 | Glink_entries glink_entries_; | |
2085 | ||
2086 | // Offset of pltresolve stub (actually, branch table for 32-bit) | |
2087 | off_t pltresolve_; | |
2088 | ||
2089 | // Allows access to .got and .plt for do_write. | |
2090 | Target_powerpc<size, big_endian>* targ_; | |
2091 | }; | |
2092 | ||
2093 | // Create the glink section. | |
2094 | ||
2095 | template<int size, bool big_endian> | |
d83ce4e3 AM |
2096 | Output_data_glink<size, big_endian>::Output_data_glink( |
2097 | Target_powerpc<size, big_endian>* targ) | |
cf43a2fe AM |
2098 | : Output_section_data(16), |
2099 | pltresolve_(0), targ_(targ) | |
2100 | { | |
2101 | } | |
2102 | ||
2103 | // Add an entry to glink, if we do not already have one for this | |
d1a8cabd | 2104 | // sym/object/addend combo. |
cf43a2fe AM |
2105 | |
2106 | template<int size, bool big_endian> | |
2107 | void | |
d83ce4e3 | 2108 | Output_data_glink<size, big_endian>::add_entry( |
c9824451 | 2109 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 2110 | const Symbol* gsym, |
c9824451 | 2111 | const elfcpp::Rela<size, big_endian>& reloc) |
cf43a2fe | 2112 | { |
c9824451 | 2113 | Glink_sym_ent ent(object, gsym, reloc); |
cf43a2fe | 2114 | unsigned int indx = this->glink_entries_.size(); |
d83ce4e3 | 2115 | this->glink_entries_.insert(std::make_pair(ent, indx)); |
cf43a2fe AM |
2116 | } |
2117 | ||
e5d5f5ed AM |
2118 | template<int size, bool big_endian> |
2119 | void | |
2120 | Output_data_glink<size, big_endian>::add_entry( | |
c9824451 | 2121 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 2122 | unsigned int locsym_index, |
c9824451 | 2123 | const elfcpp::Rela<size, big_endian>& reloc) |
e5d5f5ed | 2124 | { |
c9824451 | 2125 | Glink_sym_ent ent(object, locsym_index, reloc); |
e5d5f5ed AM |
2126 | unsigned int indx = this->glink_entries_.size(); |
2127 | this->glink_entries_.insert(std::make_pair(ent, indx)); | |
2128 | } | |
2129 | ||
cf43a2fe AM |
2130 | template<int size, bool big_endian> |
2131 | unsigned int | |
d83ce4e3 | 2132 | Output_data_glink<size, big_endian>::find_entry( |
c9824451 | 2133 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 2134 | const Symbol* gsym, |
c9824451 AM |
2135 | const elfcpp::Rela<size, big_endian>& reloc) const |
2136 | { | |
2137 | Glink_sym_ent ent(object, gsym, reloc); | |
2138 | typename Glink_entries::const_iterator p = this->glink_entries_.find(ent); | |
2139 | gold_assert(p != this->glink_entries_.end()); | |
2140 | return p->second; | |
2141 | } | |
2142 | ||
2143 | template<int size, bool big_endian> | |
2144 | unsigned int | |
2145 | Output_data_glink<size, big_endian>::find_entry(const Symbol* gsym) const | |
cf43a2fe | 2146 | { |
c9824451 | 2147 | Glink_sym_ent ent(gsym); |
cf43a2fe AM |
2148 | typename Glink_entries::const_iterator p = this->glink_entries_.find(ent); |
2149 | gold_assert(p != this->glink_entries_.end()); | |
2150 | return p->second; | |
2151 | } | |
2152 | ||
e5d5f5ed AM |
2153 | template<int size, bool big_endian> |
2154 | unsigned int | |
2155 | Output_data_glink<size, big_endian>::find_entry( | |
c9824451 | 2156 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 2157 | unsigned int locsym_index, |
c9824451 | 2158 | const elfcpp::Rela<size, big_endian>& reloc) const |
e5d5f5ed | 2159 | { |
c9824451 AM |
2160 | Glink_sym_ent ent(object, locsym_index, reloc); |
2161 | typename Glink_entries::const_iterator p = this->glink_entries_.find(ent); | |
2162 | gold_assert(p != this->glink_entries_.end()); | |
2163 | return p->second; | |
2164 | } | |
2165 | ||
2166 | template<int size, bool big_endian> | |
2167 | unsigned int | |
2168 | Output_data_glink<size, big_endian>::find_entry( | |
2169 | const Sized_relobj_file<size, big_endian>* object, | |
2170 | unsigned int locsym_index) const | |
2171 | { | |
2172 | Glink_sym_ent ent(object, locsym_index); | |
e5d5f5ed AM |
2173 | typename Glink_entries::const_iterator p = this->glink_entries_.find(ent); |
2174 | gold_assert(p != this->glink_entries_.end()); | |
2175 | return p->second; | |
2176 | } | |
2177 | ||
cf43a2fe AM |
2178 | template<int size, bool big_endian> |
2179 | void | |
2180 | Output_data_glink<size, big_endian>::set_final_data_size() | |
2181 | { | |
2182 | unsigned int count = this->glink_entries_.size(); | |
2183 | off_t total = count; | |
2184 | ||
2185 | if (count != 0) | |
2186 | { | |
2187 | if (size == 32) | |
2188 | { | |
2189 | total *= 16; | |
2190 | this->pltresolve_ = total; | |
2191 | ||
2192 | // space for branch table | |
2193 | total += 4 * (count - 1); | |
2194 | ||
2195 | total += -total & 15; | |
2196 | total += this->pltresolve_size; | |
2197 | } | |
2198 | else | |
2199 | { | |
2200 | total *= 32; | |
2201 | this->pltresolve_ = total; | |
2202 | total += this->pltresolve_size; | |
2203 | ||
2204 | // space for branch table | |
2205 | total += 8 * count; | |
2206 | if (count > 0x8000) | |
2207 | total += 4 * (count - 0x8000); | |
2208 | } | |
2209 | } | |
2210 | ||
2211 | this->set_data_size(total); | |
2212 | } | |
2213 | ||
2214 | static inline uint32_t | |
2215 | l(uint32_t a) | |
2216 | { | |
2217 | return a & 0xffff; | |
2218 | } | |
2219 | ||
2220 | static inline uint32_t | |
2221 | hi(uint32_t a) | |
2222 | { | |
2223 | return l(a >> 16); | |
2224 | } | |
2225 | ||
2226 | static inline uint32_t | |
2227 | ha(uint32_t a) | |
2228 | { | |
2229 | return hi(a + 0x8000); | |
2230 | } | |
2231 | ||
2232 | template<bool big_endian> | |
2233 | static inline void | |
c9269dff | 2234 | write_insn(unsigned char* p, uint32_t v) |
cf43a2fe AM |
2235 | { |
2236 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
2237 | } | |
2238 | ||
2239 | // Write out .glink. | |
2240 | ||
2241 | template<int size, bool big_endian> | |
2242 | void | |
2243 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
2244 | { | |
2245 | const off_t off = this->offset(); | |
42cacb20 DE |
2246 | const section_size_type oview_size = |
2247 | convert_to_section_size_type(this->data_size()); | |
cf43a2fe | 2248 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 2249 | unsigned char* p; |
42cacb20 | 2250 | |
cf43a2fe | 2251 | // The base address of the .plt section. |
dd93cd0a | 2252 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e5d5f5ed | 2253 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a | 2254 | Address plt_base = this->targ_->plt_section()->address(); |
e5d5f5ed | 2255 | Address iplt_base = invalid_address; |
cf43a2fe | 2256 | |
dd93cd0a AM |
2257 | const Output_data_got_powerpc<size, big_endian>* got |
2258 | = this->targ_->got_section(); | |
cf43a2fe AM |
2259 | |
2260 | if (size == 64) | |
2261 | { | |
dd93cd0a | 2262 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 2263 | |
cf43a2fe AM |
2264 | // Write out call stubs. |
2265 | typename Glink_entries::const_iterator g; | |
2266 | for (g = this->glink_entries_.begin(); | |
2267 | g != this->glink_entries_.end(); | |
2268 | ++g) | |
2269 | { | |
e5d5f5ed AM |
2270 | Address plt_addr; |
2271 | bool is_ifunc; | |
2272 | const Symbol* gsym = g->first.sym_; | |
2273 | if (gsym != NULL) | |
2274 | { | |
2275 | is_ifunc = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
2276 | && gsym->can_use_relative_reloc(false)); | |
2277 | plt_addr = gsym->plt_offset(); | |
2278 | } | |
2279 | else | |
2280 | { | |
2281 | is_ifunc = true; | |
2282 | const Sized_relobj_file<size, big_endian>* relobj | |
2283 | = g->first.object_; | |
2284 | unsigned int local_sym_index = g->first.locsym_; | |
2285 | plt_addr = relobj->local_plt_offset(local_sym_index); | |
2286 | } | |
2287 | if (is_ifunc) | |
2288 | { | |
2289 | if (iplt_base == invalid_address) | |
2290 | iplt_base = this->targ_->iplt_section()->address(); | |
2291 | plt_addr += iplt_base; | |
2292 | } | |
2293 | else | |
2294 | plt_addr += plt_base; | |
dd93cd0a AM |
2295 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
2296 | <const Powerpc_relobj<size, big_endian>*>(g->first.object_); | |
2297 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
2298 | Address pltoff = plt_addr - got_addr; | |
cf43a2fe AM |
2299 | |
2300 | if (pltoff + 0x80008000 > 0xffffffff || (pltoff & 7) != 0) | |
2301 | gold_error(_("%s: linkage table error against `%s'"), | |
2302 | g->first.object_->name().c_str(), | |
2303 | g->first.sym_->demangled_name().c_str()); | |
2304 | ||
2305 | p = oview + g->second * this->glink_entry_size(); | |
2306 | if (ha(pltoff) != 0) | |
2307 | { | |
2308 | write_insn<big_endian>(p, addis_12_2 + ha(pltoff)), p += 4; | |
2309 | write_insn<big_endian>(p, std_2_1 + 40), p += 4; | |
2310 | write_insn<big_endian>(p, ld_11_12 + l(pltoff)), p += 4; | |
2311 | if (ha(pltoff + 16) != ha(pltoff)) | |
2312 | { | |
2313 | write_insn<big_endian>(p, addi_12_12 + l(pltoff)), p += 4; | |
2314 | pltoff = 0; | |
2315 | } | |
2316 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
2317 | write_insn<big_endian>(p, ld_2_12 + l(pltoff + 8)), p += 4; | |
2318 | write_insn<big_endian>(p, ld_11_12 + l(pltoff + 16)), p += 4; | |
2319 | write_insn<big_endian>(p, bctr), p += 4; | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | write_insn<big_endian>(p, std_2_1 + 40), p += 4; | |
2324 | write_insn<big_endian>(p, ld_11_2 + l(pltoff)), p += 4; | |
2325 | if (ha(pltoff + 16) != ha(pltoff)) | |
2326 | { | |
2327 | write_insn<big_endian>(p, addi_2_2 + l(pltoff)), p += 4; | |
2328 | pltoff = 0; | |
2329 | } | |
2330 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
2331 | write_insn<big_endian>(p, ld_11_2 + l(pltoff + 16)), p += 4; | |
2332 | write_insn<big_endian>(p, ld_2_2 + l(pltoff + 8)), p += 4; | |
2333 | write_insn<big_endian>(p, bctr), p += 4; | |
2334 | } | |
2335 | } | |
2336 | ||
2337 | // Write pltresolve stub. | |
2338 | p = oview + this->pltresolve_; | |
dd93cd0a AM |
2339 | Address after_bcl = this->address() + this->pltresolve_ + 16; |
2340 | Address pltoff = plt_base - after_bcl; | |
cf43a2fe AM |
2341 | |
2342 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
2343 | ||
2344 | write_insn<big_endian>(p, mflr_12), p += 4; | |
2345 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
2346 | write_insn<big_endian>(p, mflr_11), p += 4; | |
2347 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
2348 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
2349 | write_insn<big_endian>(p, add_12_2_11), p += 4; | |
2350 | write_insn<big_endian>(p, ld_11_12 + 0), p += 4; | |
2351 | write_insn<big_endian>(p, ld_2_12 + 8), p += 4; | |
2352 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
2353 | write_insn<big_endian>(p, ld_11_12 + 16), p += 4; | |
2354 | write_insn<big_endian>(p, bctr), p += 4; | |
2355 | while (p < oview + this->pltresolve_ + this->pltresolve_size) | |
2356 | write_insn<big_endian>(p, nop), p += 4; | |
2357 | ||
2358 | // Write lazy link call stubs. | |
2359 | uint32_t indx = 0; | |
2360 | while (p < oview + oview_size) | |
2361 | { | |
2362 | if (indx < 0x8000) | |
2363 | { | |
2364 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
2365 | } | |
2366 | else | |
2367 | { | |
2368 | write_insn<big_endian>(p, lis_0_0 + hi(indx)), p += 4; | |
2369 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; | |
2370 | } | |
c9269dff | 2371 | uint32_t branch_off = this->pltresolve_ + 8 - (p - oview); |
cf43a2fe AM |
2372 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; |
2373 | indx++; | |
2374 | } | |
2375 | } | |
2376 | else | |
2377 | { | |
dd93cd0a AM |
2378 | // The address of _GLOBAL_OFFSET_TABLE_. |
2379 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 2380 | |
cf43a2fe AM |
2381 | // Write out call stubs. |
2382 | typename Glink_entries::const_iterator g; | |
2383 | for (g = this->glink_entries_.begin(); | |
2384 | g != this->glink_entries_.end(); | |
2385 | ++g) | |
2386 | { | |
e5d5f5ed AM |
2387 | Address plt_addr; |
2388 | bool is_ifunc; | |
2389 | const Symbol* gsym = g->first.sym_; | |
2390 | if (gsym != NULL) | |
2391 | { | |
2392 | is_ifunc = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
2393 | && gsym->can_use_relative_reloc(false)); | |
2394 | plt_addr = gsym->plt_offset(); | |
2395 | } | |
2396 | else | |
2397 | { | |
2398 | is_ifunc = true; | |
2399 | const Sized_relobj_file<size, big_endian>* relobj | |
2400 | = g->first.object_; | |
2401 | unsigned int local_sym_index = g->first.locsym_; | |
2402 | plt_addr = relobj->local_plt_offset(local_sym_index); | |
2403 | } | |
2404 | if (is_ifunc) | |
2405 | { | |
2406 | if (iplt_base == invalid_address) | |
2407 | iplt_base = this->targ_->iplt_section()->address(); | |
2408 | plt_addr += iplt_base; | |
2409 | } | |
2410 | else | |
2411 | plt_addr += plt_base; | |
cf43a2fe AM |
2412 | |
2413 | p = oview + g->second * this->glink_entry_size(); | |
2414 | if (parameters->options().output_is_position_independent()) | |
2415 | { | |
e5d5f5ed | 2416 | Address got_addr; |
d1a8cabd AM |
2417 | const Powerpc_relobj<size, big_endian>* object = static_cast |
2418 | <const Powerpc_relobj<size, big_endian>*>(g->first.object_); | |
e5d5f5ed | 2419 | if (object != NULL && g->first.addend_ >= 32768) |
d1a8cabd AM |
2420 | { |
2421 | unsigned int got2 = object->got2_shndx(); | |
c9269dff AM |
2422 | got_addr = g->first.object_->get_output_section_offset(got2); |
2423 | gold_assert(got_addr != invalid_address); | |
2424 | got_addr += (g->first.object_->output_section(got2)->address() | |
2425 | + g->first.addend_); | |
d1a8cabd | 2426 | } |
cf43a2fe AM |
2427 | else |
2428 | got_addr = g_o_t; | |
2429 | ||
dd93cd0a | 2430 | Address pltoff = plt_addr - got_addr; |
cf43a2fe AM |
2431 | if (ha(pltoff) == 0) |
2432 | { | |
2433 | write_insn<big_endian>(p + 0, lwz_11_30 + l(pltoff)); | |
2434 | write_insn<big_endian>(p + 4, mtctr_11); | |
2435 | write_insn<big_endian>(p + 8, bctr); | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | write_insn<big_endian>(p + 0, addis_11_30 + ha(pltoff)); | |
2440 | write_insn<big_endian>(p + 4, lwz_11_11 + l(pltoff)); | |
2441 | write_insn<big_endian>(p + 8, mtctr_11); | |
2442 | write_insn<big_endian>(p + 12, bctr); | |
2443 | } | |
2444 | } | |
2445 | else | |
2446 | { | |
2447 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
2448 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
2449 | write_insn<big_endian>(p + 8, mtctr_11); | |
2450 | write_insn<big_endian>(p + 12, bctr); | |
2451 | } | |
2452 | } | |
42cacb20 | 2453 | |
cf43a2fe AM |
2454 | // Write out pltresolve branch table. |
2455 | p = oview + this->pltresolve_; | |
2456 | unsigned int the_end = oview_size - this->pltresolve_size; | |
c9269dff | 2457 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
2458 | while (p < end_p - 8 * 4) |
2459 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
2460 | while (p < end_p) | |
2461 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 2462 | |
cf43a2fe AM |
2463 | // Write out pltresolve call stub. |
2464 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 2465 | { |
dd93cd0a AM |
2466 | Address res0_off = this->pltresolve_; |
2467 | Address after_bcl_off = the_end + 12; | |
2468 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
2469 | |
2470 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
2471 | write_insn<big_endian>(p + 4, mflr_0); | |
2472 | write_insn<big_endian>(p + 8, bcl_20_31); | |
2473 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
2474 | write_insn<big_endian>(p + 16, mflr_12); | |
2475 | write_insn<big_endian>(p + 20, mtlr_0); | |
2476 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
2477 | ||
dd93cd0a | 2478 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
2479 | |
2480 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
2481 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
2482 | { | |
2483 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
2484 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
2489 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
2490 | } | |
2491 | write_insn<big_endian>(p + 40, mtctr_0); | |
2492 | write_insn<big_endian>(p + 44, add_0_11_11); | |
2493 | write_insn<big_endian>(p + 48, add_11_0_11); | |
2494 | write_insn<big_endian>(p + 52, bctr); | |
2495 | write_insn<big_endian>(p + 56, nop); | |
2496 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 2497 | } |
cf43a2fe | 2498 | else |
42cacb20 | 2499 | { |
dd93cd0a | 2500 | Address res0 = this->pltresolve_ + this->address(); |
cf43a2fe AM |
2501 | |
2502 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
2503 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
2504 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
2505 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
2506 | else | |
2507 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
2508 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
2509 | write_insn<big_endian>(p + 16, mtctr_0); | |
2510 | write_insn<big_endian>(p + 20, add_0_11_11); | |
2511 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
2512 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
2513 | else | |
2514 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
2515 | write_insn<big_endian>(p + 28, add_11_0_11); | |
2516 | write_insn<big_endian>(p + 32, bctr); | |
2517 | write_insn<big_endian>(p + 36, nop); | |
2518 | write_insn<big_endian>(p + 40, nop); | |
2519 | write_insn<big_endian>(p + 44, nop); | |
2520 | write_insn<big_endian>(p + 48, nop); | |
2521 | write_insn<big_endian>(p + 52, nop); | |
2522 | write_insn<big_endian>(p + 56, nop); | |
2523 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 2524 | } |
cf43a2fe | 2525 | p += 64; |
42cacb20 DE |
2526 | } |
2527 | ||
cf43a2fe AM |
2528 | of->write_output_view(off, oview_size, oview); |
2529 | } | |
2530 | ||
f3a0ed29 AM |
2531 | |
2532 | // A class to handle linker generated save/restore functions. | |
2533 | ||
2534 | template<int size, bool big_endian> | |
2535 | class Output_data_save_res : public Output_section_data_build | |
2536 | { | |
2537 | public: | |
2538 | Output_data_save_res(Symbol_table* symtab); | |
2539 | ||
2540 | protected: | |
2541 | // Write to a map file. | |
2542 | void | |
2543 | do_print_to_mapfile(Mapfile* mapfile) const | |
2544 | { mapfile->print_output_data(this, _("** save/restore")); } | |
2545 | ||
2546 | void | |
2547 | do_write(Output_file*); | |
2548 | ||
2549 | private: | |
2550 | // The maximum size of save/restore contents. | |
2551 | static const unsigned int savres_max = 218*4; | |
2552 | ||
2553 | void | |
2554 | savres_define(Symbol_table* symtab, | |
2555 | const char *name, | |
2556 | unsigned int lo, unsigned int hi, | |
2557 | unsigned char* write_ent(unsigned char*, int), | |
2558 | unsigned char* write_tail(unsigned char*, int)); | |
2559 | ||
2560 | unsigned char *contents_; | |
2561 | }; | |
2562 | ||
2563 | template<bool big_endian> | |
2564 | static unsigned char* | |
2565 | savegpr0(unsigned char* p, int r) | |
2566 | { | |
2567 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2568 | write_insn<big_endian>(p, insn); | |
2569 | return p + 4; | |
2570 | } | |
2571 | ||
2572 | template<bool big_endian> | |
2573 | static unsigned char* | |
2574 | savegpr0_tail(unsigned char* p, int r) | |
2575 | { | |
2576 | p = savegpr0<big_endian>(p, r); | |
2577 | uint32_t insn = std_0_1 + 16; | |
2578 | write_insn<big_endian>(p, insn); | |
2579 | p = p + 4; | |
2580 | write_insn<big_endian>(p, blr); | |
2581 | return p + 4; | |
2582 | } | |
2583 | ||
2584 | template<bool big_endian> | |
62fe925a | 2585 | static unsigned char* |
f3a0ed29 AM |
2586 | restgpr0(unsigned char* p, int r) |
2587 | { | |
2588 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2589 | write_insn<big_endian>(p, insn); | |
2590 | return p + 4; | |
2591 | } | |
2592 | ||
2593 | template<bool big_endian> | |
62fe925a | 2594 | static unsigned char* |
f3a0ed29 AM |
2595 | restgpr0_tail(unsigned char* p, int r) |
2596 | { | |
2597 | uint32_t insn = ld_0_1 + 16; | |
2598 | write_insn<big_endian>(p, insn); | |
2599 | p = p + 4; | |
2600 | p = restgpr0<big_endian>(p, r); | |
2601 | write_insn<big_endian>(p, mtlr_0); | |
2602 | p = p + 4; | |
2603 | if (r == 29) | |
2604 | { | |
2605 | p = restgpr0<big_endian>(p, 30); | |
2606 | p = restgpr0<big_endian>(p, 31); | |
2607 | } | |
2608 | write_insn<big_endian>(p, blr); | |
2609 | return p + 4; | |
2610 | } | |
2611 | ||
2612 | template<bool big_endian> | |
62fe925a | 2613 | static unsigned char* |
f3a0ed29 AM |
2614 | savegpr1(unsigned char* p, int r) |
2615 | { | |
2616 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2617 | write_insn<big_endian>(p, insn); | |
2618 | return p + 4; | |
2619 | } | |
2620 | ||
2621 | template<bool big_endian> | |
62fe925a | 2622 | static unsigned char* |
f3a0ed29 AM |
2623 | savegpr1_tail(unsigned char* p, int r) |
2624 | { | |
2625 | p = savegpr1<big_endian>(p, r); | |
2626 | write_insn<big_endian>(p, blr); | |
2627 | return p + 4; | |
2628 | } | |
2629 | ||
2630 | template<bool big_endian> | |
62fe925a | 2631 | static unsigned char* |
f3a0ed29 AM |
2632 | restgpr1(unsigned char* p, int r) |
2633 | { | |
2634 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2635 | write_insn<big_endian>(p, insn); | |
2636 | return p + 4; | |
2637 | } | |
2638 | ||
2639 | template<bool big_endian> | |
62fe925a | 2640 | static unsigned char* |
f3a0ed29 AM |
2641 | restgpr1_tail(unsigned char* p, int r) |
2642 | { | |
2643 | p = restgpr1<big_endian>(p, r); | |
2644 | write_insn<big_endian>(p, blr); | |
2645 | return p + 4; | |
2646 | } | |
2647 | ||
2648 | template<bool big_endian> | |
62fe925a | 2649 | static unsigned char* |
f3a0ed29 AM |
2650 | savefpr(unsigned char* p, int r) |
2651 | { | |
2652 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2653 | write_insn<big_endian>(p, insn); | |
2654 | return p + 4; | |
2655 | } | |
2656 | ||
2657 | template<bool big_endian> | |
62fe925a | 2658 | static unsigned char* |
f3a0ed29 AM |
2659 | savefpr0_tail(unsigned char* p, int r) |
2660 | { | |
2661 | p = savefpr<big_endian>(p, r); | |
2662 | write_insn<big_endian>(p, std_0_1 + 16); | |
2663 | p = p + 4; | |
2664 | write_insn<big_endian>(p, blr); | |
2665 | return p + 4; | |
2666 | } | |
2667 | ||
2668 | template<bool big_endian> | |
62fe925a | 2669 | static unsigned char* |
f3a0ed29 AM |
2670 | restfpr(unsigned char* p, int r) |
2671 | { | |
2672 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
2673 | write_insn<big_endian>(p, insn); | |
2674 | return p + 4; | |
2675 | } | |
2676 | ||
2677 | template<bool big_endian> | |
62fe925a | 2678 | static unsigned char* |
f3a0ed29 AM |
2679 | restfpr0_tail(unsigned char* p, int r) |
2680 | { | |
2681 | write_insn<big_endian>(p, ld_0_1 + 16); | |
2682 | p = p + 4; | |
2683 | p = restfpr<big_endian>(p, r); | |
2684 | write_insn<big_endian>(p, mtlr_0); | |
2685 | p = p + 4; | |
2686 | if (r == 29) | |
2687 | { | |
2688 | p = restfpr<big_endian>(p, 30); | |
2689 | p = restfpr<big_endian>(p, 31); | |
2690 | } | |
2691 | write_insn<big_endian>(p, blr); | |
2692 | return p + 4; | |
2693 | } | |
2694 | ||
2695 | template<bool big_endian> | |
62fe925a | 2696 | static unsigned char* |
f3a0ed29 AM |
2697 | savefpr1_tail(unsigned char* p, int r) |
2698 | { | |
2699 | p = savefpr<big_endian>(p, r); | |
2700 | write_insn<big_endian>(p, blr); | |
2701 | return p + 4; | |
2702 | } | |
2703 | ||
2704 | template<bool big_endian> | |
62fe925a | 2705 | static unsigned char* |
f3a0ed29 AM |
2706 | restfpr1_tail(unsigned char* p, int r) |
2707 | { | |
2708 | p = restfpr<big_endian>(p, r); | |
2709 | write_insn<big_endian>(p, blr); | |
2710 | return p + 4; | |
2711 | } | |
2712 | ||
2713 | template<bool big_endian> | |
62fe925a | 2714 | static unsigned char* |
f3a0ed29 AM |
2715 | savevr(unsigned char* p, int r) |
2716 | { | |
2717 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
2718 | write_insn<big_endian>(p, insn); | |
2719 | p = p + 4; | |
2720 | insn = stvx_0_12_0 + (r << 21); | |
2721 | write_insn<big_endian>(p, insn); | |
2722 | return p + 4; | |
2723 | } | |
2724 | ||
2725 | template<bool big_endian> | |
62fe925a | 2726 | static unsigned char* |
f3a0ed29 AM |
2727 | savevr_tail(unsigned char* p, int r) |
2728 | { | |
2729 | p = savevr<big_endian>(p, r); | |
2730 | write_insn<big_endian>(p, blr); | |
2731 | return p + 4; | |
2732 | } | |
2733 | ||
2734 | template<bool big_endian> | |
62fe925a | 2735 | static unsigned char* |
f3a0ed29 AM |
2736 | restvr(unsigned char* p, int r) |
2737 | { | |
2738 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
2739 | write_insn<big_endian>(p, insn); | |
2740 | p = p + 4; | |
2741 | insn = lvx_0_12_0 + (r << 21); | |
2742 | write_insn<big_endian>(p, insn); | |
2743 | return p + 4; | |
2744 | } | |
2745 | ||
2746 | template<bool big_endian> | |
62fe925a | 2747 | static unsigned char* |
f3a0ed29 AM |
2748 | restvr_tail(unsigned char* p, int r) |
2749 | { | |
2750 | p = restvr<big_endian>(p, r); | |
2751 | write_insn<big_endian>(p, blr); | |
2752 | return p + 4; | |
2753 | } | |
2754 | ||
2755 | ||
2756 | template<int size, bool big_endian> | |
2757 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
2758 | Symbol_table* symtab) | |
2759 | : Output_section_data_build(4), | |
2760 | contents_(NULL) | |
2761 | { | |
2762 | this->savres_define(symtab, | |
2763 | "_savegpr0_", 14, 31, | |
2764 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
2765 | this->savres_define(symtab, | |
2766 | "_restgpr0_", 14, 29, | |
2767 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
2768 | this->savres_define(symtab, | |
2769 | "_restgpr0_", 30, 31, | |
2770 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
2771 | this->savres_define(symtab, | |
2772 | "_savegpr1_", 14, 31, | |
2773 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
2774 | this->savres_define(symtab, | |
2775 | "_restgpr1_", 14, 31, | |
2776 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
2777 | this->savres_define(symtab, | |
2778 | "_savefpr_", 14, 31, | |
2779 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
2780 | this->savres_define(symtab, | |
2781 | "_restfpr_", 14, 29, | |
2782 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
2783 | this->savres_define(symtab, | |
2784 | "_restfpr_", 30, 31, | |
2785 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
2786 | this->savres_define(symtab, | |
2787 | "._savef", 14, 31, | |
2788 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
2789 | this->savres_define(symtab, | |
2790 | "._restf", 14, 31, | |
2791 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
2792 | this->savres_define(symtab, | |
2793 | "_savevr_", 20, 31, | |
2794 | savevr<big_endian>, savevr_tail<big_endian>); | |
2795 | this->savres_define(symtab, | |
2796 | "_restvr_", 20, 31, | |
2797 | restvr<big_endian>, restvr_tail<big_endian>); | |
2798 | } | |
2799 | ||
2800 | template<int size, bool big_endian> | |
2801 | void | |
2802 | Output_data_save_res<size, big_endian>::savres_define( | |
2803 | Symbol_table* symtab, | |
2804 | const char *name, | |
2805 | unsigned int lo, unsigned int hi, | |
2806 | unsigned char* write_ent(unsigned char*, int), | |
2807 | unsigned char* write_tail(unsigned char*, int)) | |
2808 | { | |
2809 | size_t len = strlen(name); | |
2810 | bool writing = false; | |
2811 | char sym[16]; | |
2812 | ||
2813 | memcpy(sym, name, len); | |
2814 | sym[len + 2] = 0; | |
2815 | ||
2816 | for (unsigned int i = lo; i <= hi; i++) | |
2817 | { | |
2818 | sym[len + 0] = i / 10 + '0'; | |
2819 | sym[len + 1] = i % 10 + '0'; | |
2820 | Symbol* gsym = symtab->lookup(sym); | |
2821 | bool refd = gsym != NULL && gsym->is_undefined(); | |
2822 | writing = writing || refd; | |
2823 | if (writing) | |
2824 | { | |
2825 | if (this->contents_ == NULL) | |
2826 | this->contents_ = new unsigned char[this->savres_max]; | |
2827 | ||
2828 | off_t value = this->current_data_size(); | |
2829 | unsigned char* p = this->contents_ + value; | |
2830 | if (i != hi) | |
2831 | p = write_ent(p, i); | |
2832 | else | |
2833 | p = write_tail(p, i); | |
2834 | off_t cur_size = p - this->contents_; | |
2835 | this->set_current_data_size(cur_size); | |
2836 | if (refd) | |
2837 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
2838 | this, value, cur_size - value, | |
2839 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
2840 | elfcpp::STV_HIDDEN, 0, false, false); | |
2841 | } | |
2842 | } | |
2843 | } | |
2844 | ||
2845 | // Write out save/restore. | |
2846 | ||
2847 | template<int size, bool big_endian> | |
2848 | void | |
2849 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
2850 | { | |
2851 | const off_t off = this->offset(); | |
2852 | const section_size_type oview_size = | |
2853 | convert_to_section_size_type(this->data_size()); | |
2854 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
2855 | memcpy(oview, this->contents_, oview_size); | |
2856 | of->write_output_view(off, oview_size, oview); | |
2857 | } | |
2858 | ||
2859 | ||
cf43a2fe | 2860 | // Create the glink section. |
42cacb20 | 2861 | |
cf43a2fe AM |
2862 | template<int size, bool big_endian> |
2863 | void | |
2864 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
2865 | { | |
2866 | if (this->glink_ == NULL) | |
2867 | { | |
2868 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
2869 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, | |
2870 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
2871 | this->glink_, ORDER_TEXT, false); | |
2872 | } | |
42cacb20 DE |
2873 | } |
2874 | ||
2875 | // Create a PLT entry for a global symbol. | |
2876 | ||
2877 | template<int size, bool big_endian> | |
2878 | void | |
d83ce4e3 | 2879 | Target_powerpc<size, big_endian>::make_plt_entry( |
40b469d7 | 2880 | Symbol_table* symtab, |
d83ce4e3 AM |
2881 | Layout* layout, |
2882 | Symbol* gsym, | |
2883 | const elfcpp::Rela<size, big_endian>& reloc, | |
e5d5f5ed | 2884 | const Sized_relobj_file<size, big_endian>* object) |
42cacb20 | 2885 | { |
e5d5f5ed AM |
2886 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
2887 | && gsym->can_use_relative_reloc(false)) | |
2888 | { | |
2889 | if (this->iplt_ == NULL) | |
40b469d7 | 2890 | this->make_iplt_section(symtab, layout); |
03e25981 | 2891 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
2892 | } |
2893 | else | |
2894 | { | |
2895 | if (this->plt_ == NULL) | |
40b469d7 | 2896 | this->make_plt_section(symtab, layout); |
03e25981 | 2897 | this->plt_->add_entry(gsym); |
e5d5f5ed | 2898 | } |
03e25981 | 2899 | this->glink_->add_entry(object, gsym, reloc); |
e5d5f5ed | 2900 | } |
42cacb20 | 2901 | |
e5d5f5ed | 2902 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 2903 | |
e5d5f5ed AM |
2904 | template<int size, bool big_endian> |
2905 | void | |
2906 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 2907 | Symbol_table* symtab, |
e5d5f5ed | 2908 | Layout* layout, |
e5d5f5ed AM |
2909 | const elfcpp::Rela<size, big_endian>& reloc, |
2910 | Sized_relobj_file<size, big_endian>* relobj) | |
2911 | { | |
2912 | if (this->iplt_ == NULL) | |
40b469d7 | 2913 | this->make_iplt_section(symtab, layout); |
e5d5f5ed | 2914 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
03e25981 AM |
2915 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
2916 | this->glink_->add_entry(relobj, r_sym, reloc); | |
42cacb20 DE |
2917 | } |
2918 | ||
0e70b911 CC |
2919 | // Return the number of entries in the PLT. |
2920 | ||
2921 | template<int size, bool big_endian> | |
2922 | unsigned int | |
2923 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
2924 | { | |
2925 | if (this->plt_ == NULL) | |
2926 | return 0; | |
e5d5f5ed AM |
2927 | unsigned int count = this->plt_->entry_count(); |
2928 | if (this->iplt_ != NULL) | |
2929 | count += this->iplt_->entry_count(); | |
2930 | return count; | |
0e70b911 CC |
2931 | } |
2932 | ||
2933 | // Return the offset of the first non-reserved PLT entry. | |
2934 | ||
2935 | template<int size, bool big_endian> | |
2936 | unsigned int | |
2937 | Target_powerpc<size, big_endian>::first_plt_entry_offset() const | |
2938 | { | |
e5d5f5ed | 2939 | return this->plt_->first_plt_entry_offset(); |
0e70b911 CC |
2940 | } |
2941 | ||
2942 | // Return the size of each PLT entry. | |
2943 | ||
2944 | template<int size, bool big_endian> | |
2945 | unsigned int | |
2946 | Target_powerpc<size, big_endian>::plt_entry_size() const | |
2947 | { | |
2948 | return Output_data_plt_powerpc<size, big_endian>::get_plt_entry_size(); | |
2949 | } | |
2950 | ||
dd93cd0a | 2951 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
2952 | |
2953 | template<int size, bool big_endian> | |
2954 | unsigned int | |
dd93cd0a | 2955 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
2956 | Symbol_table* symtab, |
2957 | Layout* layout, | |
2958 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 2959 | { |
dd93cd0a | 2960 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
2961 | { |
2962 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
2963 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
2964 | Output_data_got_powerpc<size, big_endian>* got |
2965 | = this->got_section(symtab, layout); | |
2966 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
2967 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
2968 | got_offset, 0); | |
dd93cd0a | 2969 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 2970 | } |
dd93cd0a | 2971 | return this->tlsld_got_offset_; |
42cacb20 DE |
2972 | } |
2973 | ||
95a2c8d6 RS |
2974 | // Get the Reference_flags for a particular relocation. |
2975 | ||
2976 | template<int size, bool big_endian> | |
2977 | int | |
d83ce4e3 | 2978 | Target_powerpc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type) |
95a2c8d6 RS |
2979 | { |
2980 | switch (r_type) | |
2981 | { | |
2982 | case elfcpp::R_POWERPC_NONE: | |
2983 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
2984 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
2985 | case elfcpp::R_PPC64_TOC: | |
2986 | // No symbol reference. | |
2987 | return 0; | |
2988 | ||
dd93cd0a AM |
2989 | case elfcpp::R_PPC64_ADDR64: |
2990 | case elfcpp::R_PPC64_UADDR64: | |
2991 | case elfcpp::R_POWERPC_ADDR32: | |
2992 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 2993 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 2994 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
2995 | case elfcpp::R_POWERPC_ADDR16_LO: |
2996 | case elfcpp::R_POWERPC_ADDR16_HI: | |
2997 | case elfcpp::R_POWERPC_ADDR16_HA: | |
95a2c8d6 RS |
2998 | return Symbol::ABSOLUTE_REF; |
2999 | ||
dd93cd0a AM |
3000 | case elfcpp::R_POWERPC_ADDR24: |
3001 | case elfcpp::R_POWERPC_ADDR14: | |
3002 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3003 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3004 | return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; | |
3005 | ||
e5d5f5ed | 3006 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 3007 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 3008 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
3009 | case elfcpp::R_POWERPC_REL16: |
3010 | case elfcpp::R_POWERPC_REL16_LO: | |
3011 | case elfcpp::R_POWERPC_REL16_HI: | |
3012 | case elfcpp::R_POWERPC_REL16_HA: | |
95a2c8d6 RS |
3013 | return Symbol::RELATIVE_REF; |
3014 | ||
dd93cd0a | 3015 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 3016 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
3017 | case elfcpp::R_POWERPC_REL14: |
3018 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3019 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
95a2c8d6 RS |
3020 | return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
3021 | ||
3022 | case elfcpp::R_POWERPC_GOT16: | |
3023 | case elfcpp::R_POWERPC_GOT16_LO: | |
3024 | case elfcpp::R_POWERPC_GOT16_HI: | |
3025 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
3026 | case elfcpp::R_PPC64_GOT16_DS: |
3027 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
3028 | case elfcpp::R_PPC64_TOC16: |
3029 | case elfcpp::R_PPC64_TOC16_LO: | |
3030 | case elfcpp::R_PPC64_TOC16_HI: | |
3031 | case elfcpp::R_PPC64_TOC16_HA: | |
3032 | case elfcpp::R_PPC64_TOC16_DS: | |
3033 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
3034 | // Absolute in GOT. | |
3035 | return Symbol::ABSOLUTE_REF; | |
3036 | ||
3037 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
3038 | case elfcpp::R_POWERPC_TLS: | |
3039 | return Symbol::TLS_REF; | |
3040 | ||
3041 | case elfcpp::R_POWERPC_COPY: | |
3042 | case elfcpp::R_POWERPC_GLOB_DAT: | |
3043 | case elfcpp::R_POWERPC_JMP_SLOT: | |
3044 | case elfcpp::R_POWERPC_RELATIVE: | |
3045 | case elfcpp::R_POWERPC_DTPMOD: | |
3046 | default: | |
3047 | // Not expected. We will give an error later. | |
3048 | return 0; | |
3049 | } | |
3050 | } | |
3051 | ||
42cacb20 DE |
3052 | // Report an unsupported relocation against a local symbol. |
3053 | ||
3054 | template<int size, bool big_endian> | |
3055 | void | |
3056 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
3057 | Sized_relobj_file<size, big_endian>* object, |
3058 | unsigned int r_type) | |
42cacb20 DE |
3059 | { |
3060 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
3061 | object->name().c_str(), r_type); | |
3062 | } | |
3063 | ||
3064 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
3065 | // dynamic linker does not support it, issue an error. | |
3066 | ||
3067 | template<int size, bool big_endian> | |
3068 | void | |
3069 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
3070 | unsigned int r_type) | |
3071 | { | |
3072 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
3073 | ||
3074 | // These are the relocation types supported by glibc for both 32-bit | |
3075 | // and 64-bit powerpc. | |
3076 | switch (r_type) | |
3077 | { | |
3ea0a085 | 3078 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
3079 | case elfcpp::R_POWERPC_RELATIVE: |
3080 | case elfcpp::R_POWERPC_GLOB_DAT: | |
3081 | case elfcpp::R_POWERPC_DTPMOD: | |
3082 | case elfcpp::R_POWERPC_DTPREL: | |
3083 | case elfcpp::R_POWERPC_TPREL: | |
3084 | case elfcpp::R_POWERPC_JMP_SLOT: | |
3085 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 3086 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 3087 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 3088 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 3089 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
3090 | case elfcpp::R_POWERPC_ADDR16: |
3091 | case elfcpp::R_POWERPC_UADDR16: | |
3092 | case elfcpp::R_POWERPC_ADDR16_LO: | |
3093 | case elfcpp::R_POWERPC_ADDR16_HI: | |
3094 | case elfcpp::R_POWERPC_ADDR16_HA: | |
3095 | case elfcpp::R_POWERPC_ADDR14: | |
3096 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3097 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3098 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 3099 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
3100 | case elfcpp::R_POWERPC_TPREL16: |
3101 | case elfcpp::R_POWERPC_TPREL16_LO: | |
3102 | case elfcpp::R_POWERPC_TPREL16_HI: | |
3103 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
3104 | return; |
3105 | ||
3106 | default: | |
3107 | break; | |
3108 | } | |
3109 | ||
3110 | if (size == 64) | |
3111 | { | |
3112 | switch (r_type) | |
3113 | { | |
3114 | // These are the relocation types supported only on 64-bit. | |
3115 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 3116 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 3117 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 3118 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 3119 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
42cacb20 DE |
3120 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
3121 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
3122 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
3123 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 3124 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
3125 | case elfcpp::R_POWERPC_ADDR30: |
3126 | case elfcpp::R_PPC64_TPREL16_DS: | |
3127 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
3128 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
3129 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
3130 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
3131 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
3132 | return; |
3133 | ||
3134 | default: | |
3135 | break; | |
3136 | } | |
3137 | } | |
3138 | else | |
3139 | { | |
3140 | switch (r_type) | |
3141 | { | |
3142 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
3143 | // ??? glibc ld.so doesn't need to support these. |
3144 | case elfcpp::R_POWERPC_DTPREL16: | |
3145 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
3146 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
3147 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
3148 | return; | |
42cacb20 DE |
3149 | |
3150 | default: | |
3151 | break; | |
3152 | } | |
3153 | } | |
3154 | ||
3155 | // This prevents us from issuing more than one error per reloc | |
3156 | // section. But we can still wind up issuing more than one | |
3157 | // error per object file. | |
3158 | if (this->issued_non_pic_error_) | |
3159 | return; | |
33aea2fd | 3160 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
3161 | object->error(_("requires unsupported dynamic reloc; " |
3162 | "recompile with -fPIC")); | |
3163 | this->issued_non_pic_error_ = true; | |
3164 | return; | |
3165 | } | |
3166 | ||
e5d5f5ed AM |
3167 | // Return whether we need to make a PLT entry for a relocation of the |
3168 | // given type against a STT_GNU_IFUNC symbol. | |
3169 | ||
3170 | template<int size, bool big_endian> | |
3171 | bool | |
3172 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
3173 | Sized_relobj_file<size, big_endian>* object, | |
3174 | unsigned int r_type) | |
3175 | { | |
c9824451 AM |
3176 | // In non-pic code any reference will resolve to the plt call stub |
3177 | // for the ifunc symbol. | |
3178 | if (size == 32 && !parameters->options().output_is_position_independent()) | |
3179 | return true; | |
3180 | ||
e5d5f5ed AM |
3181 | switch (r_type) |
3182 | { | |
3183 | // Word size refs from data sections are OK. | |
3184 | case elfcpp::R_POWERPC_ADDR32: | |
3185 | case elfcpp::R_POWERPC_UADDR32: | |
3186 | if (size == 32) | |
3187 | return true; | |
3188 | break; | |
3189 | ||
3190 | case elfcpp::R_PPC64_ADDR64: | |
3191 | case elfcpp::R_PPC64_UADDR64: | |
3192 | if (size == 64) | |
3193 | return true; | |
3194 | break; | |
3195 | ||
3196 | // GOT refs are good. | |
3197 | case elfcpp::R_POWERPC_GOT16: | |
3198 | case elfcpp::R_POWERPC_GOT16_LO: | |
3199 | case elfcpp::R_POWERPC_GOT16_HI: | |
3200 | case elfcpp::R_POWERPC_GOT16_HA: | |
3201 | case elfcpp::R_PPC64_GOT16_DS: | |
3202 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
3203 | return true; | |
3204 | ||
3205 | // So are function calls. | |
3206 | case elfcpp::R_POWERPC_ADDR24: | |
3207 | case elfcpp::R_POWERPC_ADDR14: | |
3208 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3209 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3210 | case elfcpp::R_POWERPC_REL24: | |
3211 | case elfcpp::R_PPC_PLTREL24: | |
3212 | case elfcpp::R_POWERPC_REL14: | |
3213 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3214 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3215 | return true; | |
3216 | ||
3217 | default: | |
3218 | break; | |
3219 | } | |
3220 | ||
3221 | // Anything else is a problem. | |
3222 | // If we are building a static executable, the libc startup function | |
3223 | // responsible for applying indirect function relocations is going | |
3224 | // to complain about the reloc type. | |
3225 | // If we are building a dynamic executable, we will have a text | |
3226 | // relocation. The dynamic loader will set the text segment | |
3227 | // writable and non-executable to apply text relocations. So we'll | |
3228 | // segfault when trying to run the indirection function to resolve | |
3229 | // the reloc. | |
3230 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
3231 | object->name().c_str(), r_type); | |
3232 | return false; | |
3233 | } | |
3234 | ||
42cacb20 DE |
3235 | // Scan a relocation for a local symbol. |
3236 | ||
3237 | template<int size, bool big_endian> | |
3238 | inline void | |
3239 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
3240 | Symbol_table* symtab, |
3241 | Layout* layout, | |
3242 | Target_powerpc<size, big_endian>* target, | |
3243 | Sized_relobj_file<size, big_endian>* object, | |
3244 | unsigned int data_shndx, | |
3245 | Output_section* output_section, | |
3246 | const elfcpp::Rela<size, big_endian>& reloc, | |
3247 | unsigned int r_type, | |
e5d5f5ed | 3248 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 3249 | bool is_discarded) |
42cacb20 | 3250 | { |
dd93cd0a AM |
3251 | Powerpc_relobj<size, big_endian>* ppc_object |
3252 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
3253 | ||
bfdfa4cd AM |
3254 | if (is_discarded) |
3255 | { | |
3256 | if (size == 64 | |
3257 | && data_shndx == ppc_object->opd_shndx() | |
3258 | && r_type == elfcpp::R_PPC64_ADDR64) | |
3259 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
3260 | return; | |
3261 | } | |
3262 | ||
e5d5f5ed AM |
3263 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
3264 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
3265 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
40b469d7 AM |
3266 | { |
3267 | target->make_local_ifunc_plt_entry(symtab, layout, reloc, object); | |
3268 | } | |
e5d5f5ed | 3269 | |
42cacb20 DE |
3270 | switch (r_type) |
3271 | { | |
3272 | case elfcpp::R_POWERPC_NONE: | |
3273 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
3274 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6ce78956 | 3275 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 3276 | case elfcpp::R_PPC_EMB_MRKREF: |
7404fe1b | 3277 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
3278 | break; |
3279 | ||
3280 | case elfcpp::R_PPC64_TOC: | |
3281 | { | |
3282 | Output_data_got_powerpc<size, big_endian>* got | |
3283 | = target->got_section(symtab, layout); | |
3284 | if (parameters->options().output_is_position_independent()) | |
3285 | { | |
bfdfa4cd AM |
3286 | Address off = reloc.get_r_offset(); |
3287 | if (size == 64 | |
3288 | && data_shndx == ppc_object->opd_shndx() | |
3289 | && ppc_object->get_opd_discard(off - 8)) | |
3290 | break; | |
3291 | ||
dd93cd0a | 3292 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 3293 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
3294 | rela_dyn->add_output_section_relative(got->output_section(), |
3295 | elfcpp::R_POWERPC_RELATIVE, | |
3296 | output_section, | |
bfdfa4cd AM |
3297 | object, data_shndx, off, |
3298 | symobj->toc_base_offset()); | |
dd93cd0a AM |
3299 | } |
3300 | } | |
42cacb20 DE |
3301 | break; |
3302 | ||
3303 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 3304 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 3305 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
3306 | case elfcpp::R_POWERPC_UADDR32: |
3307 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 3308 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 3309 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
3310 | case elfcpp::R_POWERPC_ADDR16_HI: |
3311 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a AM |
3312 | case elfcpp::R_POWERPC_UADDR16: |
3313 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
3314 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
3315 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
3316 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
3317 | case elfcpp::R_PPC64_ADDR16_DS: | |
3318 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
3319 | case elfcpp::R_POWERPC_ADDR14: | |
3320 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3321 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
3322 | // If building a shared library (or a position-independent |
3323 | // executable), we need to create a dynamic relocation for | |
3324 | // this location. | |
c9824451 AM |
3325 | if (parameters->options().output_is_position_independent() |
3326 | || (size == 64 && is_ifunc)) | |
2e702c99 RM |
3327 | { |
3328 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
42cacb20 | 3329 | |
dd93cd0a AM |
3330 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
3331 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 RM |
3332 | { |
3333 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
e5d5f5ed AM |
3334 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; |
3335 | if (is_ifunc) | |
3336 | { | |
3337 | rela_dyn = target->iplt_section()->rel_plt(); | |
3338 | dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
3339 | } | |
3340 | rela_dyn->add_local_relative(object, r_sym, dynrel, | |
dd93cd0a AM |
3341 | output_section, data_shndx, |
3342 | reloc.get_r_offset(), | |
c9824451 | 3343 | reloc.get_r_addend(), false); |
2e702c99 RM |
3344 | } |
3345 | else | |
3346 | { | |
dd93cd0a | 3347 | check_non_pic(object, r_type); |
42cacb20 | 3348 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
3349 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
3350 | data_shndx, reloc.get_r_offset(), | |
3351 | reloc.get_r_addend()); | |
2e702c99 RM |
3352 | } |
3353 | } | |
42cacb20 DE |
3354 | break; |
3355 | ||
3ea0a085 | 3356 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 3357 | case elfcpp::R_POWERPC_REL32: |
42cacb20 | 3358 | case elfcpp::R_POWERPC_REL24: |
c9824451 | 3359 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 3360 | case elfcpp::R_PPC_LOCAL24PC: |
dd93cd0a | 3361 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 3362 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 3363 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 3364 | case elfcpp::R_POWERPC_REL16_HA: |
dd93cd0a AM |
3365 | case elfcpp::R_POWERPC_REL14: |
3366 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3367 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3368 | case elfcpp::R_POWERPC_SECTOFF: | |
3369 | case elfcpp::R_POWERPC_TPREL16: | |
3370 | case elfcpp::R_POWERPC_DTPREL16: | |
3371 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
3372 | case elfcpp::R_POWERPC_TPREL16_LO: | |
3373 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
3374 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
3375 | case elfcpp::R_POWERPC_TPREL16_HI: | |
3376 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
3377 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
3378 | case elfcpp::R_POWERPC_TPREL16_HA: | |
3379 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
3380 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
3381 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
3382 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
3383 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
3384 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
3385 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
3386 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
3387 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
3388 | case elfcpp::R_PPC64_TPREL16_DS: | |
3389 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
3390 | case elfcpp::R_PPC64_DTPREL16_DS: | |
3391 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
3392 | case elfcpp::R_PPC64_SECTOFF_DS: | |
3393 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3394 | case elfcpp::R_PPC64_TLSGD: | |
3395 | case elfcpp::R_PPC64_TLSLD: | |
42cacb20 DE |
3396 | break; |
3397 | ||
3398 | case elfcpp::R_POWERPC_GOT16: | |
3399 | case elfcpp::R_POWERPC_GOT16_LO: | |
3400 | case elfcpp::R_POWERPC_GOT16_HI: | |
3401 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
3402 | case elfcpp::R_PPC64_GOT16_DS: |
3403 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 3404 | { |
c9269dff | 3405 | // The symbol requires a GOT entry. |
dd93cd0a AM |
3406 | Output_data_got_powerpc<size, big_endian>* got |
3407 | = target->got_section(symtab, layout); | |
3408 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 3409 | |
e5d5f5ed | 3410 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 3411 | { |
e5d5f5ed AM |
3412 | if (size == 32 && is_ifunc) |
3413 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); | |
3414 | else | |
3415 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
3416 | } | |
3417 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
3418 | { | |
3419 | // If we are generating a shared object or a pie, this | |
3420 | // symbol's GOT entry will be set by a dynamic relocation. | |
3421 | unsigned int off; | |
3422 | off = got->add_constant(0); | |
3423 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 3424 | |
e5d5f5ed AM |
3425 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
3426 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; | |
3427 | if (is_ifunc) | |
3428 | { | |
3429 | rela_dyn = target->iplt_section()->rel_plt(); | |
3430 | dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
42cacb20 | 3431 | } |
e5d5f5ed | 3432 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 3433 | got, off, 0, false); |
2e702c99 | 3434 | } |
42cacb20 DE |
3435 | } |
3436 | break; | |
3437 | ||
cf43a2fe AM |
3438 | case elfcpp::R_PPC64_TOC16: |
3439 | case elfcpp::R_PPC64_TOC16_LO: | |
3440 | case elfcpp::R_PPC64_TOC16_HI: | |
3441 | case elfcpp::R_PPC64_TOC16_HA: | |
3442 | case elfcpp::R_PPC64_TOC16_DS: | |
3443 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
3444 | // We need a GOT section. |
3445 | target->got_section(symtab, layout); | |
3446 | break; | |
3447 | ||
dd93cd0a AM |
3448 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
3449 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
3450 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
3451 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
3452 | { | |
3453 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
3454 | if (tls_type == tls::TLSOPT_NONE) | |
3455 | { | |
3456 | Output_data_got_powerpc<size, big_endian>* got | |
3457 | = target->got_section(symtab, layout); | |
3458 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
3459 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
3460 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
3461 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
3462 | } |
3463 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3464 | { | |
3465 | // no GOT relocs needed for Local Exec. | |
3466 | } | |
3467 | else | |
3468 | gold_unreachable(); | |
3469 | } | |
42cacb20 DE |
3470 | break; |
3471 | ||
dd93cd0a AM |
3472 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
3473 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
3474 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
3475 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
3476 | { | |
3477 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
3478 | if (tls_type == tls::TLSOPT_NONE) | |
3479 | target->tlsld_got_offset(symtab, layout, object); | |
3480 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3481 | { | |
3482 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
3483 | if (parameters->options().emit_relocs()) |
3484 | { | |
3485 | Output_section* os = layout->tls_segment()->first_section(); | |
3486 | gold_assert(os != NULL); | |
3487 | os->set_needs_symtab_index(); | |
3488 | } | |
dd93cd0a AM |
3489 | } |
3490 | else | |
3491 | gold_unreachable(); | |
3492 | } | |
42cacb20 | 3493 | break; |
42cacb20 | 3494 | |
dd93cd0a AM |
3495 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
3496 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
3497 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
3498 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
3499 | { | |
3500 | Output_data_got_powerpc<size, big_endian>* got | |
3501 | = target->got_section(symtab, layout); | |
3502 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 3503 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
3504 | } |
3505 | break; | |
42cacb20 | 3506 | |
dd93cd0a AM |
3507 | case elfcpp::R_POWERPC_GOT_TPREL16: |
3508 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
3509 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
3510 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
3511 | { | |
3512 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
3513 | if (tls_type == tls::TLSOPT_NONE) | |
3514 | { | |
dd93cd0a | 3515 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
3516 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
3517 | { | |
3518 | Output_data_got_powerpc<size, big_endian>* got | |
3519 | = target->got_section(symtab, layout); | |
3520 | unsigned int off = got->add_constant(0); | |
3521 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
3522 | ||
3523 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
3524 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
3525 | elfcpp::R_POWERPC_TPREL, | |
3526 | got, off, 0); | |
3527 | } | |
dd93cd0a AM |
3528 | } |
3529 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3530 | { | |
3531 | // no GOT relocs needed for Local Exec. | |
3532 | } | |
3533 | else | |
3534 | gold_unreachable(); | |
3535 | } | |
3536 | break; | |
3537 | ||
3538 | default: | |
3539 | unsupported_reloc_local(object, r_type); | |
3540 | break; | |
3541 | } | |
3542 | } | |
3543 | ||
3544 | // Report an unsupported relocation against a global symbol. | |
3545 | ||
3546 | template<int size, bool big_endian> | |
3547 | void | |
3548 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
3549 | Sized_relobj_file<size, big_endian>* object, | |
3550 | unsigned int r_type, | |
3551 | Symbol* gsym) | |
3552 | { | |
42cacb20 DE |
3553 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
3554 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
3555 | } | |
3556 | ||
3557 | // Scan a relocation for a global symbol. | |
3558 | ||
3559 | template<int size, bool big_endian> | |
3560 | inline void | |
3561 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
3562 | Symbol_table* symtab, |
3563 | Layout* layout, | |
3564 | Target_powerpc<size, big_endian>* target, | |
3565 | Sized_relobj_file<size, big_endian>* object, | |
3566 | unsigned int data_shndx, | |
3567 | Output_section* output_section, | |
3568 | const elfcpp::Rela<size, big_endian>& reloc, | |
3569 | unsigned int r_type, | |
3570 | Symbol* gsym) | |
42cacb20 | 3571 | { |
dd93cd0a AM |
3572 | Powerpc_relobj<size, big_endian>* ppc_object |
3573 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
3574 | ||
e5d5f5ed AM |
3575 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
3576 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
3577 | && this->reloc_needs_plt_for_ifunc(object, r_type)) | |
40b469d7 | 3578 | target->make_plt_entry(symtab, layout, gsym, reloc, object); |
e5d5f5ed | 3579 | |
42cacb20 DE |
3580 | switch (r_type) |
3581 | { | |
3582 | case elfcpp::R_POWERPC_NONE: | |
3583 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
3584 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 3585 | case elfcpp::R_PPC_LOCAL24PC: |
dd93cd0a | 3586 | case elfcpp::R_PPC_EMB_MRKREF: |
7404fe1b | 3587 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
3588 | break; |
3589 | ||
3590 | case elfcpp::R_PPC64_TOC: | |
3591 | { | |
3592 | Output_data_got_powerpc<size, big_endian>* got | |
3593 | = target->got_section(symtab, layout); | |
3594 | if (parameters->options().output_is_position_independent()) | |
3595 | { | |
bfdfa4cd AM |
3596 | Address off = reloc.get_r_offset(); |
3597 | if (size == 64 | |
3598 | && data_shndx == ppc_object->opd_shndx() | |
3599 | && ppc_object->get_opd_discard(off - 8)) | |
3600 | break; | |
3601 | ||
dd93cd0a AM |
3602 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
3603 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
3604 | if (data_shndx != ppc_object->opd_shndx()) | |
3605 | symobj = static_cast | |
3606 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
3607 | rela_dyn->add_output_section_relative(got->output_section(), | |
3608 | elfcpp::R_POWERPC_RELATIVE, | |
3609 | output_section, | |
bfdfa4cd | 3610 | object, data_shndx, off, |
dd93cd0a AM |
3611 | symobj->toc_base_offset()); |
3612 | } | |
3613 | } | |
42cacb20 DE |
3614 | break; |
3615 | ||
c9269dff | 3616 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd AM |
3617 | if (size == 64 |
3618 | && data_shndx == ppc_object->opd_shndx() | |
3619 | && (gsym->is_defined_in_discarded_section() | |
3620 | || gsym->object() != object)) | |
3621 | { | |
3622 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
3623 | break; | |
3624 | } | |
3625 | // Fall thru | |
dd93cd0a | 3626 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 3627 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
3628 | case elfcpp::R_POWERPC_UADDR32: |
3629 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
3630 | case elfcpp::R_POWERPC_ADDR16: |
3631 | case elfcpp::R_POWERPC_ADDR16_LO: | |
3632 | case elfcpp::R_POWERPC_ADDR16_HI: | |
3633 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a AM |
3634 | case elfcpp::R_POWERPC_UADDR16: |
3635 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
3636 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
3637 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
3638 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
3639 | case elfcpp::R_PPC64_ADDR16_DS: | |
3640 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
3641 | case elfcpp::R_POWERPC_ADDR14: | |
3642 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3643 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 3644 | { |
c9269dff AM |
3645 | // Make a PLT entry if necessary. |
3646 | if (gsym->needs_plt_entry()) | |
3647 | { | |
40b469d7 | 3648 | target->make_plt_entry(symtab, layout, gsym, reloc, 0); |
2e702c99 RM |
3649 | // Since this is not a PC-relative relocation, we may be |
3650 | // taking the address of a function. In that case we need to | |
3651 | // set the entry in the dynamic symbol table to the address of | |
e5d5f5ed | 3652 | // the PLT call stub. |
cf43a2fe | 3653 | if (size == 32 |
e5d5f5ed AM |
3654 | && gsym->is_from_dynobj() |
3655 | && !parameters->options().output_is_position_independent()) | |
2e702c99 | 3656 | gsym->set_needs_dynsym_value(); |
c9269dff AM |
3657 | } |
3658 | // Make a dynamic relocation if necessary. | |
c9824451 AM |
3659 | if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type)) |
3660 | || (size == 64 && gsym->type() == elfcpp::STT_GNU_IFUNC)) | |
c9269dff AM |
3661 | { |
3662 | if (gsym->may_need_copy_reloc()) | |
3663 | { | |
3664 | target->copy_reloc(symtab, layout, object, | |
3665 | data_shndx, output_section, gsym, reloc); | |
3666 | } | |
627b30b7 AM |
3667 | else if ((size == 32 |
3668 | && r_type == elfcpp::R_POWERPC_ADDR32 | |
3669 | && gsym->can_use_relative_reloc(false) | |
3670 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
3671 | && parameters->options().shared())) | |
3672 | || (size == 64 | |
3673 | && r_type == elfcpp::R_PPC64_ADDR64 | |
3674 | && (gsym->can_use_relative_reloc(false) | |
3675 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 RM |
3676 | { |
3677 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
e5d5f5ed AM |
3678 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; |
3679 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
3680 | { | |
3681 | rela_dyn = target->iplt_section()->rel_plt(); | |
3682 | dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
3683 | } | |
3684 | rela_dyn->add_symbolless_global_addend( | |
3685 | gsym, dynrel, output_section, object, data_shndx, | |
3686 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
3687 | } |
3688 | else | |
3689 | { | |
3690 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
42cacb20 | 3691 | check_non_pic(object, r_type); |
dd93cd0a AM |
3692 | rela_dyn->add_global(gsym, r_type, output_section, |
3693 | object, data_shndx, | |
3694 | reloc.get_r_offset(), | |
3695 | reloc.get_r_addend()); | |
2e702c99 RM |
3696 | } |
3697 | } | |
42cacb20 DE |
3698 | } |
3699 | break; | |
3700 | ||
cf43a2fe | 3701 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 3702 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
3703 | if (gsym->needs_plt_entry() |
3704 | || (!gsym->final_value_is_known() | |
3705 | && (gsym->is_undefined() | |
3706 | || gsym->is_from_dynobj() | |
3707 | || gsym->is_preemptible()))) | |
40b469d7 | 3708 | target->make_plt_entry(symtab, layout, gsym, reloc, object); |
3ea0a085 | 3709 | // Fall thru |
42cacb20 | 3710 | |
3ea0a085 | 3711 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 3712 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 AM |
3713 | // Make a dynamic relocation if necessary. |
3714 | if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type))) | |
3715 | { | |
3716 | if (gsym->may_need_copy_reloc()) | |
3717 | { | |
3718 | target->copy_reloc(symtab, layout, object, | |
3719 | data_shndx, output_section, gsym, | |
3720 | reloc); | |
3721 | } | |
3722 | else | |
3723 | { | |
3724 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
3725 | check_non_pic(object, r_type); | |
3726 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
3727 | data_shndx, reloc.get_r_offset(), | |
3728 | reloc.get_r_addend()); | |
3729 | } | |
3730 | } | |
3731 | break; | |
3732 | ||
6ce78956 AM |
3733 | case elfcpp::R_POWERPC_REL16: |
3734 | case elfcpp::R_POWERPC_REL16_LO: | |
3735 | case elfcpp::R_POWERPC_REL16_HI: | |
3736 | case elfcpp::R_POWERPC_REL16_HA: | |
dd93cd0a AM |
3737 | case elfcpp::R_POWERPC_REL14: |
3738 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3739 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3740 | case elfcpp::R_POWERPC_SECTOFF: | |
3741 | case elfcpp::R_POWERPC_TPREL16: | |
3742 | case elfcpp::R_POWERPC_DTPREL16: | |
3743 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
3744 | case elfcpp::R_POWERPC_TPREL16_LO: | |
3745 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
3746 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
3747 | case elfcpp::R_POWERPC_TPREL16_HI: | |
3748 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
3749 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
3750 | case elfcpp::R_POWERPC_TPREL16_HA: | |
3751 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
3752 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
3753 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
3754 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
3755 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
3756 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
3757 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
3758 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
3759 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
3760 | case elfcpp::R_PPC64_TPREL16_DS: | |
3761 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
3762 | case elfcpp::R_PPC64_DTPREL16_DS: | |
3763 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
3764 | case elfcpp::R_PPC64_SECTOFF_DS: | |
3765 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3766 | case elfcpp::R_PPC64_TLSGD: | |
3767 | case elfcpp::R_PPC64_TLSLD: | |
cf43a2fe AM |
3768 | break; |
3769 | ||
42cacb20 DE |
3770 | case elfcpp::R_POWERPC_GOT16: |
3771 | case elfcpp::R_POWERPC_GOT16_LO: | |
3772 | case elfcpp::R_POWERPC_GOT16_HI: | |
3773 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
3774 | case elfcpp::R_PPC64_GOT16_DS: |
3775 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 3776 | { |
c9269dff AM |
3777 | // The symbol requires a GOT entry. |
3778 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
3779 | |
3780 | got = target->got_section(symtab, layout); | |
2e702c99 | 3781 | if (gsym->final_value_is_known()) |
2e702c99 | 3782 | { |
e5d5f5ed AM |
3783 | if (size == 32 && gsym->type() == elfcpp::STT_GNU_IFUNC) |
3784 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); | |
3785 | else | |
3786 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
3787 | } | |
3788 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
3789 | { | |
3790 | // If we are generating a shared object or a pie, this | |
3791 | // symbol's GOT entry will be set by a dynamic relocation. | |
3792 | unsigned int off = got->add_constant(0); | |
3793 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
3794 | ||
2e702c99 | 3795 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
e5d5f5ed AM |
3796 | if (gsym->can_use_relative_reloc(false) |
3797 | && !(size == 32 | |
3798 | && gsym->visibility() == elfcpp::STV_PROTECTED | |
3799 | && parameters->options().shared())) | |
2e702c99 | 3800 | { |
e5d5f5ed AM |
3801 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; |
3802 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
3803 | { | |
3804 | rela_dyn = target->iplt_section()->rel_plt(); | |
3805 | dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
3806 | } | |
3807 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); | |
3808 | } | |
3809 | else | |
3810 | { | |
3811 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
3812 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 3813 | } |
2e702c99 | 3814 | } |
42cacb20 DE |
3815 | } |
3816 | break; | |
3817 | ||
cf43a2fe AM |
3818 | case elfcpp::R_PPC64_TOC16: |
3819 | case elfcpp::R_PPC64_TOC16_LO: | |
3820 | case elfcpp::R_PPC64_TOC16_HI: | |
3821 | case elfcpp::R_PPC64_TOC16_HA: | |
3822 | case elfcpp::R_PPC64_TOC16_DS: | |
3823 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
3824 | // We need a GOT section. |
3825 | target->got_section(symtab, layout); | |
3826 | break; | |
3827 | ||
dd93cd0a AM |
3828 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
3829 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
3830 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
3831 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
3832 | { | |
3833 | const bool final = gsym->final_value_is_known(); | |
3834 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
3835 | if (tls_type == tls::TLSOPT_NONE) | |
3836 | { | |
3837 | Output_data_got_powerpc<size, big_endian>* got | |
3838 | = target->got_section(symtab, layout); | |
3839 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, | |
3840 | target->rela_dyn_section(layout), | |
3841 | elfcpp::R_POWERPC_DTPMOD, | |
3842 | elfcpp::R_POWERPC_DTPREL); | |
3843 | } | |
3844 | else if (tls_type == tls::TLSOPT_TO_IE) | |
3845 | { | |
acc276d8 AM |
3846 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
3847 | { | |
3848 | Output_data_got_powerpc<size, big_endian>* got | |
3849 | = target->got_section(symtab, layout); | |
3850 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
3851 | if (gsym->is_undefined() | |
3852 | || gsym->is_from_dynobj()) | |
3853 | { | |
3854 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
3855 | elfcpp::R_POWERPC_TPREL); | |
3856 | } | |
3857 | else | |
3858 | { | |
3859 | unsigned int off = got->add_constant(0); | |
3860 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
3861 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
3862 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
3863 | got, off, 0); | |
3864 | } | |
3865 | } | |
dd93cd0a AM |
3866 | } |
3867 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3868 | { | |
3869 | // no GOT relocs needed for Local Exec. | |
3870 | } | |
3871 | else | |
3872 | gold_unreachable(); | |
3873 | } | |
42cacb20 DE |
3874 | break; |
3875 | ||
dd93cd0a AM |
3876 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
3877 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
3878 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
3879 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
3880 | { | |
3881 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
3882 | if (tls_type == tls::TLSOPT_NONE) | |
3883 | target->tlsld_got_offset(symtab, layout, object); | |
3884 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3885 | { | |
3886 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
3887 | if (parameters->options().emit_relocs()) |
3888 | { | |
3889 | Output_section* os = layout->tls_segment()->first_section(); | |
3890 | gold_assert(os != NULL); | |
3891 | os->set_needs_symtab_index(); | |
3892 | } | |
dd93cd0a AM |
3893 | } |
3894 | else | |
3895 | gold_unreachable(); | |
3896 | } | |
3897 | break; | |
3898 | ||
3899 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
3900 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
3901 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
3902 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
3903 | { | |
3904 | Output_data_got_powerpc<size, big_endian>* got | |
3905 | = target->got_section(symtab, layout); | |
bd73a62d AM |
3906 | if (!gsym->final_value_is_known() |
3907 | && (gsym->is_from_dynobj() | |
3908 | || gsym->is_undefined() | |
3909 | || gsym->is_preemptible())) | |
3910 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
3911 | target->rela_dyn_section(layout), | |
3912 | elfcpp::R_POWERPC_DTPREL); | |
3913 | else | |
3914 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
3915 | } |
3916 | break; | |
3917 | ||
3918 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
3919 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
3920 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
3921 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
3922 | { | |
3923 | const bool final = gsym->final_value_is_known(); | |
3924 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
3925 | if (tls_type == tls::TLSOPT_NONE) | |
3926 | { | |
acc276d8 AM |
3927 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
3928 | { | |
3929 | Output_data_got_powerpc<size, big_endian>* got | |
3930 | = target->got_section(symtab, layout); | |
3931 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
3932 | if (gsym->is_undefined() | |
3933 | || gsym->is_from_dynobj()) | |
3934 | { | |
3935 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
3936 | elfcpp::R_POWERPC_TPREL); | |
3937 | } | |
3938 | else | |
3939 | { | |
3940 | unsigned int off = got->add_constant(0); | |
3941 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
3942 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
3943 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
3944 | got, off, 0); | |
3945 | } | |
3946 | } | |
dd93cd0a AM |
3947 | } |
3948 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3949 | { | |
3950 | // no GOT relocs needed for Local Exec. | |
3951 | } | |
3952 | else | |
3953 | gold_unreachable(); | |
3954 | } | |
42cacb20 DE |
3955 | break; |
3956 | ||
3957 | default: | |
3958 | unsupported_reloc_global(object, r_type, gsym); | |
3959 | break; | |
3960 | } | |
3961 | } | |
3962 | ||
6d03d481 ST |
3963 | // Process relocations for gc. |
3964 | ||
3965 | template<int size, bool big_endian> | |
3966 | void | |
3967 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
3968 | Symbol_table* symtab, |
3969 | Layout* layout, | |
3970 | Sized_relobj_file<size, big_endian>* object, | |
3971 | unsigned int data_shndx, | |
3972 | unsigned int, | |
3973 | const unsigned char* prelocs, | |
3974 | size_t reloc_count, | |
3975 | Output_section* output_section, | |
3976 | bool needs_special_offset_handling, | |
3977 | size_t local_symbol_count, | |
3978 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
3979 | { |
3980 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 3981 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
e81fea4d AM |
3982 | Powerpc_relobj<size, big_endian>* ppc_object |
3983 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
3984 | if (size == 64) | |
3985 | ppc_object->set_opd_valid(); | |
3986 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
3987 | { | |
3988 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
3989 | for (p = ppc_object->access_from_map()->begin(); | |
3990 | p != ppc_object->access_from_map()->end(); | |
3991 | ++p) | |
3992 | { | |
3993 | Address dst_off = p->first; | |
3994 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
3995 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
3996 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
3997 | { | |
3998 | Object* src_obj = s->first; | |
3999 | unsigned int src_indx = s->second; | |
4000 | symtab->gc()->add_reference(src_obj, src_indx, | |
4001 | ppc_object, dst_indx); | |
4002 | } | |
4003 | p->second.clear(); | |
4004 | } | |
4005 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 4006 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
4007 | // Don't look at .opd relocs as .opd will reference everything. |
4008 | return; | |
4009 | } | |
6d03d481 | 4010 | |
41cbeecc | 4011 | gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan, |
3ff2ccb0 | 4012 | typename Target_powerpc::Relocatable_size_for_reloc>( |
6d03d481 ST |
4013 | symtab, |
4014 | layout, | |
4015 | this, | |
4016 | object, | |
4017 | data_shndx, | |
4018 | prelocs, | |
4019 | reloc_count, | |
4020 | output_section, | |
4021 | needs_special_offset_handling, | |
4022 | local_symbol_count, | |
4023 | plocal_symbols); | |
4024 | } | |
4025 | ||
e81fea4d AM |
4026 | // Handle target specific gc actions when adding a gc reference from |
4027 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
4028 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
4029 | // section of a function descriptor. | |
4030 | ||
4031 | template<int size, bool big_endian> | |
4032 | void | |
4033 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
4034 | Symbol_table* symtab, | |
4035 | Object* src_obj, | |
4036 | unsigned int src_shndx, | |
4037 | Object* dst_obj, | |
4038 | unsigned int dst_shndx, | |
4039 | Address dst_off) const | |
4040 | { | |
4041 | Powerpc_relobj<size, big_endian>* ppc_object | |
4042 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
acc276d8 AM |
4043 | if (size == 64 |
4044 | && !ppc_object->is_dynamic() | |
4045 | && dst_shndx == ppc_object->opd_shndx()) | |
e81fea4d AM |
4046 | { |
4047 | if (ppc_object->opd_valid()) | |
4048 | { | |
4049 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
4050 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
4051 | } | |
4052 | else | |
4053 | { | |
4054 | // If we haven't run scan_opd_relocs, we must delay | |
4055 | // processing this function descriptor reference. | |
4056 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
4057 | } | |
4058 | } | |
4059 | } | |
4060 | ||
4061 | // Add any special sections for this symbol to the gc work list. | |
4062 | // For powerpc64, this adds the code section of a function | |
4063 | // descriptor. | |
4064 | ||
4065 | template<int size, bool big_endian> | |
4066 | void | |
4067 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
4068 | Symbol_table* symtab, | |
4069 | Symbol* sym) const | |
4070 | { | |
4071 | if (size == 64) | |
4072 | { | |
4073 | Powerpc_relobj<size, big_endian>* ppc_object | |
4074 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
4075 | bool is_ordinary; | |
4076 | unsigned int shndx = sym->shndx(&is_ordinary); | |
4077 | if (is_ordinary && shndx == ppc_object->opd_shndx()) | |
4078 | { | |
4079 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
4080 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
4081 | if (ppc_object->opd_valid()) |
4082 | { | |
4083 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4084 | symtab->gc()->worklist().push(Section_id(ppc_object, dst_indx)); | |
4085 | } | |
4086 | else | |
4087 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
4088 | } |
4089 | } | |
4090 | } | |
4091 | ||
42cacb20 DE |
4092 | // Scan relocations for a section. |
4093 | ||
4094 | template<int size, bool big_endian> | |
4095 | void | |
4096 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
4097 | Symbol_table* symtab, |
4098 | Layout* layout, | |
4099 | Sized_relobj_file<size, big_endian>* object, | |
4100 | unsigned int data_shndx, | |
4101 | unsigned int sh_type, | |
4102 | const unsigned char* prelocs, | |
4103 | size_t reloc_count, | |
4104 | Output_section* output_section, | |
4105 | bool needs_special_offset_handling, | |
4106 | size_t local_symbol_count, | |
4107 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
4108 | { |
4109 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 4110 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
42cacb20 DE |
4111 | |
4112 | if (sh_type == elfcpp::SHT_REL) | |
4113 | { | |
4114 | gold_error(_("%s: unsupported REL reloc section"), | |
4115 | object->name().c_str()); | |
4116 | return; | |
4117 | } | |
4118 | ||
2ea97941 | 4119 | gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>( |
42cacb20 DE |
4120 | symtab, |
4121 | layout, | |
4122 | this, | |
4123 | object, | |
4124 | data_shndx, | |
4125 | prelocs, | |
4126 | reloc_count, | |
4127 | output_section, | |
4128 | needs_special_offset_handling, | |
4129 | local_symbol_count, | |
4130 | plocal_symbols); | |
4131 | } | |
4132 | ||
ec4dbad3 AM |
4133 | // Functor class for processing the global symbol table. |
4134 | // Removes symbols defined on discarded opd entries. | |
4135 | ||
4136 | template<bool big_endian> | |
4137 | class Global_symbol_visitor_opd | |
4138 | { | |
4139 | public: | |
4140 | Global_symbol_visitor_opd() | |
4141 | { } | |
4142 | ||
4143 | void | |
4144 | operator()(Sized_symbol<64>* sym) | |
4145 | { | |
4146 | if (sym->has_symtab_index() | |
4147 | || sym->source() != Symbol::FROM_OBJECT | |
4148 | || !sym->in_real_elf()) | |
4149 | return; | |
4150 | ||
4151 | Powerpc_relobj<64, big_endian>* symobj | |
4152 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
4153 | if (symobj->is_dynamic() | |
4154 | || symobj->opd_shndx() == 0) | |
4155 | return; | |
4156 | ||
4157 | bool is_ordinary; | |
4158 | unsigned int shndx = sym->shndx(&is_ordinary); | |
4159 | if (shndx == symobj->opd_shndx() | |
4160 | && symobj->get_opd_discard(sym->value())) | |
4161 | sym->set_symtab_index(-1U); | |
4162 | } | |
4163 | }; | |
4164 | ||
f3a0ed29 AM |
4165 | template<int size, bool big_endian> |
4166 | void | |
4167 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
4168 | Layout* layout, | |
4169 | Symbol_table* symtab) | |
4170 | { | |
4171 | if (size == 64) | |
4172 | { | |
4173 | Output_data_save_res<64, big_endian>* savres | |
4174 | = new Output_data_save_res<64, big_endian>(symtab); | |
4175 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, | |
4176 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
4177 | savres, ORDER_TEXT, false); | |
4178 | } | |
4179 | } | |
4180 | ||
42cacb20 DE |
4181 | // Finalize the sections. |
4182 | ||
4183 | template<int size, bool big_endian> | |
4184 | void | |
d5b40221 DK |
4185 | Target_powerpc<size, big_endian>::do_finalize_sections( |
4186 | Layout* layout, | |
f59f41f3 | 4187 | const Input_objects*, |
ec4dbad3 | 4188 | Symbol_table* symtab) |
42cacb20 | 4189 | { |
c9824451 AM |
4190 | if (parameters->doing_static_link()) |
4191 | { | |
4192 | // At least some versions of glibc elf-init.o have a strong | |
4193 | // reference to __rela_iplt marker syms. A weak ref would be | |
4194 | // better.. | |
4195 | if (this->iplt_ != NULL) | |
4196 | { | |
4197 | Reloc_section* rel = this->iplt_->rel_plt(); | |
4198 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
4199 | Symbol_table::PREDEFINED, rel, 0, 0, | |
4200 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
4201 | elfcpp::STV_HIDDEN, 0, false, true); | |
4202 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
4203 | Symbol_table::PREDEFINED, rel, 0, 0, | |
4204 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
4205 | elfcpp::STV_HIDDEN, 0, true, true); | |
4206 | } | |
4207 | else | |
4208 | { | |
4209 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
4210 | Symbol_table::PREDEFINED, 0, 0, | |
4211 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
4212 | elfcpp::STV_HIDDEN, 0, true, false); | |
4213 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
4214 | Symbol_table::PREDEFINED, 0, 0, | |
4215 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
4216 | elfcpp::STV_HIDDEN, 0, true, false); | |
4217 | } | |
4218 | } | |
4219 | ||
ec4dbad3 AM |
4220 | if (size == 64) |
4221 | { | |
4222 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
4223 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
f3a0ed29 | 4224 | this->define_save_restore_funcs(layout, symtab); |
ec4dbad3 AM |
4225 | } |
4226 | ||
42cacb20 | 4227 | // Fill in some more dynamic tags. |
c9269dff | 4228 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 4229 | if (odyn != NULL) |
cf43a2fe | 4230 | { |
c9824451 AM |
4231 | const Reloc_section* rel_plt = (this->plt_ == NULL |
4232 | ? NULL | |
4233 | : this->plt_->rel_plt()); | |
4234 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
4235 | this->rela_dyn_, true, size == 32); | |
4236 | ||
4237 | if (size == 32) | |
dd93cd0a | 4238 | { |
c9824451 AM |
4239 | if (this->got_ != NULL) |
4240 | { | |
4241 | this->got_->finalize_data_size(); | |
4242 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
4243 | this->got_, this->got_->g_o_t()); | |
4244 | } | |
dd93cd0a | 4245 | } |
c9824451 | 4246 | else |
dd93cd0a | 4247 | { |
c9824451 AM |
4248 | if (this->glink_ != NULL) |
4249 | { | |
4250 | this->glink_->finalize_data_size(); | |
4251 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
4252 | this->glink_, | |
4253 | (this->glink_->pltresolve() | |
4254 | + this->glink_->pltresolve_size | |
4255 | - 32)); | |
4256 | } | |
dd93cd0a | 4257 | } |
c9269dff | 4258 | } |
cf43a2fe | 4259 | |
42cacb20 DE |
4260 | // Emit any relocs we saved in an attempt to avoid generating COPY |
4261 | // relocs. | |
4262 | if (this->copy_relocs_.any_saved_relocs()) | |
4263 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
4264 | } | |
4265 | ||
3ea0a085 AM |
4266 | // Return the value to use for a branch relocation. |
4267 | ||
4268 | template<int size, bool big_endian> | |
4269 | typename elfcpp::Elf_types<size>::Elf_Addr | |
4270 | Target_powerpc<size, big_endian>::symval_for_branch( | |
4271 | Address value, | |
4272 | const Sized_symbol<size>* gsym, | |
4273 | Powerpc_relobj<size, big_endian>* object, | |
4274 | unsigned int *dest_shndx) | |
4275 | { | |
4276 | *dest_shndx = 0; | |
4277 | if (size == 32) | |
4278 | return value; | |
4279 | ||
4280 | // If the symbol is defined in an opd section, ie. is a function | |
4281 | // descriptor, use the function descriptor code entry address | |
4282 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 AM |
4283 | if (gsym != NULL |
4284 | && gsym->source() != Symbol::FROM_OBJECT) | |
4285 | return value; | |
3ea0a085 AM |
4286 | if (gsym != NULL) |
4287 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
4288 | unsigned int shndx = symobj->opd_shndx(); | |
4289 | if (shndx == 0) | |
4290 | return value; | |
4291 | Address opd_addr = symobj->get_output_section_offset(shndx); | |
4292 | gold_assert(opd_addr != invalid_address); | |
4293 | opd_addr += symobj->output_section(shndx)->address(); | |
4294 | if (value >= opd_addr && value < opd_addr + symobj->section_size(shndx)) | |
4295 | { | |
4296 | Address sec_off; | |
e81fea4d | 4297 | *dest_shndx = symobj->get_opd_ent(value - opd_addr, &sec_off); |
3ea0a085 AM |
4298 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
4299 | gold_assert(sec_addr != invalid_address); | |
4300 | sec_addr += symobj->output_section(*dest_shndx)->address(); | |
4301 | value = sec_addr + sec_off; | |
4302 | } | |
4303 | return value; | |
4304 | } | |
4305 | ||
42cacb20 DE |
4306 | // Perform a relocation. |
4307 | ||
4308 | template<int size, bool big_endian> | |
4309 | inline bool | |
4310 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 AM |
4311 | const Relocate_info<size, big_endian>* relinfo, |
4312 | Target_powerpc* target, | |
4313 | Output_section* os, | |
4314 | size_t relnum, | |
4315 | const elfcpp::Rela<size, big_endian>& rela, | |
4316 | unsigned int r_type, | |
4317 | const Sized_symbol<size>* gsym, | |
4318 | const Symbol_value<size>* psymval, | |
4319 | unsigned char* view, | |
c9269dff AM |
4320 | Address address, |
4321 | section_size_type view_size) | |
42cacb20 | 4322 | { |
dd93cd0a AM |
4323 | |
4324 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
4325 | || r_type == elfcpp::R_PPC_PLTREL24) | |
4326 | && gsym != NULL | |
4327 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
4328 | enum skip_tls last_tls = this->call_tls_get_addr_; | |
4329 | this->call_tls_get_addr_ = CALL_NOT_EXPECTED; | |
4330 | if (is_tls_call) | |
4331 | { | |
4332 | if (last_tls == CALL_NOT_EXPECTED) | |
4333 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
4334 | _("__tls_get_addr call lacks marker reloc")); | |
4335 | else if (last_tls == CALL_SKIP) | |
4336 | return false; | |
4337 | } | |
4338 | else if (last_tls != CALL_NOT_EXPECTED) | |
4339 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
4340 | _("missing expected __tls_get_addr call")); | |
4341 | ||
42cacb20 | 4342 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 4343 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
3ea0a085 AM |
4344 | Powerpc_relobj<size, big_endian>* const object |
4345 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a AM |
4346 | Address value = 0; |
4347 | bool has_plt_value = false; | |
e5d5f5ed | 4348 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
dd93cd0a | 4349 | if (gsym != NULL |
e5d5f5ed AM |
4350 | ? use_plt_offset<size>(gsym, Scan::get_reference_flags(r_type)) |
4351 | : object->local_has_plt_offset(r_sym)) | |
dd93cd0a AM |
4352 | { |
4353 | const Output_data_glink<size, big_endian>* glink | |
4354 | = target->glink_section(); | |
c9824451 AM |
4355 | unsigned int glink_index; |
4356 | if (gsym != NULL) | |
4357 | glink_index = glink->find_entry(object, gsym, rela); | |
4358 | else | |
4359 | glink_index = glink->find_entry(object, r_sym, rela); | |
dd93cd0a AM |
4360 | value = glink->address() + glink_index * glink->glink_entry_size(); |
4361 | has_plt_value = true; | |
4362 | } | |
cf43a2fe AM |
4363 | |
4364 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
4365 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
4366 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
4367 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
4368 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
4369 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 4370 | { |
cf43a2fe AM |
4371 | if (gsym != NULL) |
4372 | { | |
4373 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
4374 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
4375 | } | |
4376 | else | |
4377 | { | |
4378 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
4379 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
4380 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
4381 | } | |
dd93cd0a | 4382 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
4383 | } |
4384 | else if (r_type == elfcpp::R_PPC64_TOC) | |
4385 | { | |
c9269dff | 4386 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 4387 | + object->toc_base_offset()); |
cf43a2fe AM |
4388 | } |
4389 | else if (gsym != NULL | |
4390 | && (r_type == elfcpp::R_POWERPC_REL24 | |
4391 | || r_type == elfcpp::R_PPC_PLTREL24) | |
dd93cd0a | 4392 | && has_plt_value) |
cf43a2fe | 4393 | { |
c9269dff AM |
4394 | if (size == 64) |
4395 | { | |
4396 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
4397 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
4398 | bool can_plt_call = false; | |
4399 | if (rela.get_r_offset() + 8 <= view_size) | |
4400 | { | |
3ea0a085 | 4401 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 4402 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
4403 | if ((insn & 1) != 0 |
4404 | && (insn2 == nop | |
4405 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff AM |
4406 | { |
4407 | elfcpp::Swap<32, big_endian>::writeval(wv + 1, ld_2_1 + 40); | |
4408 | can_plt_call = true; | |
4409 | } | |
4410 | } | |
4411 | if (!can_plt_call) | |
3ea0a085 AM |
4412 | { |
4413 | // If we don't have a branch and link followed by a nop, | |
4414 | // we can't go via the plt because there is no place to | |
4415 | // put a toc restoring instruction. | |
4416 | // Unless we know we won't be returning. | |
4417 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
4418 | can_plt_call = true; | |
4419 | } | |
4420 | if (!can_plt_call) | |
4421 | { | |
4422 | // This is not an error in one special case: A self | |
4423 | // call. It isn't possible to cheaply verify we have | |
4424 | // such a call so just check for a call to the same | |
4425 | // section. | |
4426 | bool ok = false; | |
c9824451 | 4427 | Address code = value; |
3ea0a085 AM |
4428 | if (gsym->source() == Symbol::FROM_OBJECT |
4429 | && gsym->object() == object) | |
4430 | { | |
4431 | Address addend = rela.get_r_addend(); | |
4432 | unsigned int dest_shndx; | |
c9824451 AM |
4433 | Address opdent = psymval->value(object, addend); |
4434 | code = target->symval_for_branch(opdent, gsym, object, | |
4435 | &dest_shndx); | |
3ea0a085 AM |
4436 | bool is_ordinary; |
4437 | if (dest_shndx == 0) | |
4438 | dest_shndx = gsym->shndx(&is_ordinary); | |
4439 | ok = dest_shndx == relinfo->data_shndx; | |
4440 | } | |
4441 | if (!ok) | |
c9824451 AM |
4442 | { |
4443 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
4444 | _("call lacks nop, can't restore toc; " | |
4445 | "recompile with -fPIC")); | |
4446 | value = code; | |
4447 | } | |
3ea0a085 | 4448 | } |
c9269dff | 4449 | } |
cf43a2fe | 4450 | } |
dd93cd0a AM |
4451 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
4452 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
4453 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
4454 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
4455 | { | |
4456 | // First instruction of a global dynamic sequence, arg setup insn. | |
4457 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
4458 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
4459 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
4460 | if (tls_type == tls::TLSOPT_NONE) | |
4461 | got_type = GOT_TYPE_TLSGD; | |
4462 | else if (tls_type == tls::TLSOPT_TO_IE) | |
4463 | got_type = GOT_TYPE_TPREL; | |
4464 | if (got_type != GOT_TYPE_STANDARD) | |
4465 | { | |
4466 | if (gsym != NULL) | |
4467 | { | |
4468 | gold_assert(gsym->has_got_offset(got_type)); | |
4469 | value = gsym->got_offset(got_type); | |
4470 | } | |
4471 | else | |
4472 | { | |
4473 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
4474 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
4475 | value = object->local_got_offset(r_sym, got_type); | |
4476 | } | |
4477 | value -= target->got_section()->got_base_offset(object); | |
4478 | } | |
4479 | if (tls_type == tls::TLSOPT_TO_IE) | |
4480 | { | |
4481 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
4482 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
4483 | { | |
4484 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4485 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
4486 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
4487 | if (size == 32) | |
4488 | insn |= 32 << 26; // lwz | |
4489 | else | |
4490 | insn |= 58 << 26; // ld | |
4491 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4492 | } | |
4493 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
4494 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
4495 | } | |
4496 | else if (tls_type == tls::TLSOPT_TO_LE) | |
4497 | { | |
4498 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
4499 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
4500 | { | |
4501 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4502 | Insn insn = addis_3_13; | |
4503 | if (size == 32) | |
4504 | insn = addis_3_2; | |
4505 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4506 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
4507 | value = psymval->value(object, rela.get_r_addend()); | |
4508 | } | |
4509 | else | |
4510 | { | |
4511 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4512 | Insn insn = nop; | |
4513 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4514 | r_type = elfcpp::R_POWERPC_NONE; | |
4515 | } | |
4516 | } | |
4517 | } | |
4518 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
4519 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
4520 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
4521 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
4522 | { | |
4523 | // First instruction of a local dynamic sequence, arg setup insn. | |
4524 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
4525 | if (tls_type == tls::TLSOPT_NONE) | |
4526 | { | |
4527 | value = target->tlsld_got_offset(); | |
4528 | value -= target->got_section()->got_base_offset(object); | |
4529 | } | |
4530 | else | |
4531 | { | |
4532 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
4533 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
4534 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
4535 | { | |
4536 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4537 | Insn insn = addis_3_13; | |
4538 | if (size == 32) | |
4539 | insn = addis_3_2; | |
4540 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4541 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 4542 | value = dtp_offset; |
dd93cd0a AM |
4543 | } |
4544 | else | |
4545 | { | |
4546 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4547 | Insn insn = nop; | |
4548 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4549 | r_type = elfcpp::R_POWERPC_NONE; | |
4550 | } | |
4551 | } | |
4552 | } | |
4553 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
4554 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
4555 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
4556 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
4557 | { | |
4558 | // Accesses relative to a local dynamic sequence address, | |
4559 | // no optimisation here. | |
4560 | if (gsym != NULL) | |
4561 | { | |
4562 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
4563 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
4564 | } | |
4565 | else | |
4566 | { | |
4567 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
4568 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); | |
4569 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
4570 | } | |
4571 | value -= target->got_section()->got_base_offset(object); | |
4572 | } | |
4573 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
4574 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
4575 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
4576 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
4577 | { | |
4578 | // First instruction of initial exec sequence. | |
4579 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
4580 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
4581 | if (tls_type == tls::TLSOPT_NONE) | |
4582 | { | |
4583 | if (gsym != NULL) | |
4584 | { | |
4585 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
4586 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
4587 | } | |
4588 | else | |
4589 | { | |
4590 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
4591 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); | |
4592 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
4593 | } | |
4594 | value -= target->got_section()->got_base_offset(object); | |
4595 | } | |
4596 | else | |
4597 | { | |
4598 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
4599 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
4600 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
4601 | { | |
4602 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4603 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
4604 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
4605 | if (size == 32) | |
4606 | insn |= addis_0_2; | |
4607 | else | |
4608 | insn |= addis_0_13; | |
4609 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4610 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
4611 | value = psymval->value(object, rela.get_r_addend()); | |
4612 | } | |
4613 | else | |
4614 | { | |
4615 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
4616 | Insn insn = nop; | |
4617 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4618 | r_type = elfcpp::R_POWERPC_NONE; | |
4619 | } | |
4620 | } | |
4621 | } | |
4622 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
4623 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
4624 | { | |
4625 | // Second instruction of a global dynamic sequence, | |
4626 | // the __tls_get_addr call | |
4627 | this->call_tls_get_addr_ = CALL_EXPECTED; | |
4628 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
4629 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
4630 | if (tls_type != tls::TLSOPT_NONE) | |
4631 | { | |
4632 | if (tls_type == tls::TLSOPT_TO_IE) | |
4633 | { | |
4634 | Insn* iview = reinterpret_cast<Insn*>(view); | |
4635 | Insn insn = add_3_3_13; | |
4636 | if (size == 32) | |
4637 | insn = add_3_3_2; | |
4638 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4639 | r_type = elfcpp::R_POWERPC_NONE; | |
4640 | } | |
4641 | else | |
4642 | { | |
4643 | Insn* iview = reinterpret_cast<Insn*>(view); | |
4644 | Insn insn = addi_3_3; | |
4645 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4646 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
4647 | view += 2 * big_endian; | |
4648 | value = psymval->value(object, rela.get_r_addend()); | |
4649 | } | |
4650 | this->call_tls_get_addr_ = CALL_SKIP; | |
4651 | } | |
4652 | } | |
4653 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
4654 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
4655 | { | |
4656 | // Second instruction of a local dynamic sequence, | |
4657 | // the __tls_get_addr call | |
4658 | this->call_tls_get_addr_ = CALL_EXPECTED; | |
4659 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
4660 | if (tls_type == tls::TLSOPT_TO_LE) | |
4661 | { | |
4662 | Insn* iview = reinterpret_cast<Insn*>(view); | |
4663 | Insn insn = addi_3_3; | |
4664 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4665 | this->call_tls_get_addr_ = CALL_SKIP; | |
4666 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
4667 | view += 2 * big_endian; | |
7404fe1b | 4668 | value = dtp_offset; |
dd93cd0a AM |
4669 | } |
4670 | } | |
4671 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
4672 | { | |
4673 | // Second instruction of an initial exec sequence | |
4674 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
4675 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
4676 | if (tls_type == tls::TLSOPT_TO_LE) | |
4677 | { | |
4678 | Insn* iview = reinterpret_cast<Insn*>(view); | |
4679 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
4680 | unsigned int reg = size == 32 ? 2 : 13; | |
4681 | insn = at_tls_transform(insn, reg); | |
4682 | gold_assert(insn != 0); | |
4683 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4684 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
4685 | view += 2 * big_endian; | |
4686 | value = psymval->value(object, rela.get_r_addend()); | |
4687 | } | |
4688 | } | |
c9824451 | 4689 | else if (!has_plt_value) |
cf43a2fe | 4690 | { |
dd93cd0a | 4691 | Address addend = 0; |
3ea0a085 | 4692 | unsigned int dest_shndx; |
cf43a2fe AM |
4693 | if (r_type != elfcpp::R_PPC_PLTREL24) |
4694 | addend = rela.get_r_addend(); | |
c9824451 | 4695 | value = psymval->value(object, addend); |
dd93cd0a | 4696 | if (size == 64 && is_branch_reloc(r_type)) |
3ea0a085 | 4697 | value = target->symval_for_branch(value, gsym, object, &dest_shndx); |
42cacb20 DE |
4698 | } |
4699 | ||
42cacb20 DE |
4700 | switch (r_type) |
4701 | { | |
dd93cd0a AM |
4702 | case elfcpp::R_PPC64_REL64: |
4703 | case elfcpp::R_POWERPC_REL32: | |
4704 | case elfcpp::R_POWERPC_REL24: | |
4705 | case elfcpp::R_PPC_PLTREL24: | |
4706 | case elfcpp::R_PPC_LOCAL24PC: | |
4707 | case elfcpp::R_POWERPC_REL16: | |
4708 | case elfcpp::R_POWERPC_REL16_LO: | |
4709 | case elfcpp::R_POWERPC_REL16_HI: | |
4710 | case elfcpp::R_POWERPC_REL16_HA: | |
4711 | case elfcpp::R_POWERPC_REL14: | |
4712 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
4713 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
4714 | value -= address; | |
4715 | break; | |
4716 | ||
42cacb20 DE |
4717 | case elfcpp::R_PPC64_TOC16: |
4718 | case elfcpp::R_PPC64_TOC16_LO: | |
4719 | case elfcpp::R_PPC64_TOC16_HI: | |
4720 | case elfcpp::R_PPC64_TOC16_HA: | |
4721 | case elfcpp::R_PPC64_TOC16_DS: | |
4722 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 4723 | // Subtract the TOC base address. |
c9269dff | 4724 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 4725 | + object->toc_base_offset()); |
42cacb20 DE |
4726 | break; |
4727 | ||
cf43a2fe AM |
4728 | case elfcpp::R_POWERPC_SECTOFF: |
4729 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
4730 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
4731 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
4732 | case elfcpp::R_PPC64_SECTOFF_DS: | |
4733 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
4734 | if (os != NULL) | |
4735 | value -= os->address(); | |
42cacb20 DE |
4736 | break; |
4737 | ||
dd93cd0a AM |
4738 | case elfcpp::R_PPC64_TPREL16_DS: |
4739 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
4740 | if (size != 64) | |
4741 | // R_PPC_TLSGD and R_PPC_TLSLD | |
4742 | break; | |
4743 | case elfcpp::R_POWERPC_TPREL16: | |
4744 | case elfcpp::R_POWERPC_TPREL16_LO: | |
4745 | case elfcpp::R_POWERPC_TPREL16_HI: | |
4746 | case elfcpp::R_POWERPC_TPREL16_HA: | |
4747 | case elfcpp::R_POWERPC_TPREL: | |
4748 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
4749 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
4750 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
4751 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
4752 | // tls symbol values are relative to tls_segment()->vaddr() | |
4753 | value -= tp_offset; | |
4754 | break; | |
4755 | ||
4756 | case elfcpp::R_PPC64_DTPREL16_DS: | |
4757 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
4758 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
4759 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
4760 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
4761 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
4762 | if (size != 64) | |
4763 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
4764 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
4765 | break; | |
4766 | case elfcpp::R_POWERPC_DTPREL16: | |
4767 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
4768 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
4769 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
4770 | case elfcpp::R_POWERPC_DTPREL: | |
4771 | // tls symbol values are relative to tls_segment()->vaddr() | |
4772 | value -= dtp_offset; | |
4773 | break; | |
4774 | ||
42cacb20 DE |
4775 | default: |
4776 | break; | |
4777 | } | |
4778 | ||
dd93cd0a | 4779 | Insn branch_bit = 0; |
42cacb20 DE |
4780 | switch (r_type) |
4781 | { | |
dd93cd0a AM |
4782 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
4783 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
4784 | branch_bit = 1 << 21; | |
4785 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
4786 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
4787 | { | |
4788 | Insn* iview = reinterpret_cast<Insn*>(view); | |
4789 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
4790 | insn &= ~(1 << 21); | |
4791 | insn |= branch_bit; | |
4792 | if (this->is_isa_v2) | |
4793 | { | |
4794 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
4795 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
4796 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
4797 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
4798 | insn |= 0x02 << 21; | |
4799 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
4800 | insn |= 0x08 << 21; | |
4801 | else | |
4802 | break; | |
4803 | } | |
4804 | else | |
4805 | { | |
4806 | // Invert 'y' bit if not the default. | |
4807 | if (static_cast<Signed_address>(value) < 0) | |
4808 | insn ^= 1 << 21; | |
4809 | } | |
4810 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
4811 | } | |
4812 | break; | |
4813 | ||
4814 | default: | |
4815 | break; | |
4816 | } | |
4817 | ||
f4baf0d4 | 4818 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
dd93cd0a AM |
4819 | switch (r_type) |
4820 | { | |
4821 | case elfcpp::R_POWERPC_ADDR32: | |
4822 | case elfcpp::R_POWERPC_UADDR32: | |
4823 | if (size == 64) | |
f4baf0d4 | 4824 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
4825 | break; |
4826 | ||
4827 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 4828 | if (size == 64) |
f4baf0d4 | 4829 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
4830 | break; |
4831 | ||
4832 | case elfcpp::R_POWERPC_ADDR24: | |
4833 | case elfcpp::R_POWERPC_ADDR16: | |
4834 | case elfcpp::R_POWERPC_UADDR16: | |
4835 | case elfcpp::R_PPC64_ADDR16_DS: | |
4836 | case elfcpp::R_POWERPC_ADDR14: | |
4837 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
4838 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
f4baf0d4 | 4839 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
4840 | break; |
4841 | ||
4842 | case elfcpp::R_POWERPC_REL24: | |
42cacb20 | 4843 | case elfcpp::R_PPC_PLTREL24: |
cf43a2fe | 4844 | case elfcpp::R_PPC_LOCAL24PC: |
dd93cd0a AM |
4845 | case elfcpp::R_POWERPC_REL16: |
4846 | case elfcpp::R_PPC64_TOC16: | |
4847 | case elfcpp::R_POWERPC_GOT16: | |
4848 | case elfcpp::R_POWERPC_SECTOFF: | |
4849 | case elfcpp::R_POWERPC_TPREL16: | |
4850 | case elfcpp::R_POWERPC_DTPREL16: | |
4851 | case elfcpp::R_PPC64_TPREL16_DS: | |
4852 | case elfcpp::R_PPC64_DTPREL16_DS: | |
4853 | case elfcpp::R_PPC64_TOC16_DS: | |
4854 | case elfcpp::R_PPC64_GOT16_DS: | |
4855 | case elfcpp::R_PPC64_SECTOFF_DS: | |
4856 | case elfcpp::R_POWERPC_REL14: | |
4857 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
4858 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
4859 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
4860 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
4861 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
4862 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
f4baf0d4 | 4863 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 4864 | break; |
dd93cd0a | 4865 | } |
42cacb20 | 4866 | |
3ea0a085 | 4867 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 4868 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
4869 | switch (r_type) |
4870 | { | |
4871 | case elfcpp::R_POWERPC_NONE: | |
4872 | case elfcpp::R_POWERPC_TLS: | |
4873 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
4874 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
4875 | case elfcpp::R_PPC_EMB_MRKREF: | |
42cacb20 DE |
4876 | break; |
4877 | ||
4878 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 4879 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 4880 | case elfcpp::R_PPC64_TOC: |
dd93cd0a AM |
4881 | Reloc::addr64(view, value); |
4882 | break; | |
4883 | ||
4884 | case elfcpp::R_POWERPC_TPREL: | |
4885 | case elfcpp::R_POWERPC_DTPREL: | |
4886 | if (size == 64) | |
4887 | Reloc::addr64(view, value); | |
4888 | else | |
3ea0a085 | 4889 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
4890 | break; |
4891 | ||
4892 | case elfcpp::R_PPC64_UADDR64: | |
4893 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
4894 | break; |
4895 | ||
4896 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 4897 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
4898 | break; |
4899 | ||
acc276d8 | 4900 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 4901 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 4902 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
4903 | break; |
4904 | ||
4905 | case elfcpp::R_POWERPC_ADDR24: | |
4906 | case elfcpp::R_POWERPC_REL24: | |
4907 | case elfcpp::R_PPC_PLTREL24: | |
4908 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 4909 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
4910 | break; |
4911 | ||
dd93cd0a AM |
4912 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
4913 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
4914 | if (size == 64) | |
4915 | { | |
3ea0a085 | 4916 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
4917 | break; |
4918 | } | |
cf43a2fe | 4919 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 4920 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 4921 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 4922 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 4923 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
4924 | case elfcpp::R_POWERPC_TPREL16: |
4925 | case elfcpp::R_POWERPC_DTPREL16: | |
4926 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
4927 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
4928 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
cf43a2fe | 4929 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 4930 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 4931 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 4932 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 4933 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
4934 | case elfcpp::R_POWERPC_TPREL16_LO: |
4935 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
4936 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
4937 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
4938 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
3ea0a085 | 4939 | status = Reloc::addr16(view, value, overflow); |
dd93cd0a AM |
4940 | break; |
4941 | ||
4942 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 4943 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
4944 | break; |
4945 | ||
cf43a2fe | 4946 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 4947 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 4948 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 4949 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 4950 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
4951 | case elfcpp::R_POWERPC_TPREL16_HI: |
4952 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
4953 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
4954 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
4955 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
4956 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
4957 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
4958 | break; |
4959 | ||
cf43a2fe | 4960 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 4961 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 4962 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 4963 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 4964 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
4965 | case elfcpp::R_POWERPC_TPREL16_HA: |
4966 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
4967 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
4968 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
4969 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
4970 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
4971 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
4972 | break; |
4973 | ||
dd93cd0a AM |
4974 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
4975 | if (size == 32) | |
4976 | // R_PPC_EMB_NADDR16_LO | |
4977 | goto unsupp; | |
4978 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
4979 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
4980 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
4981 | break; |
4982 | ||
dd93cd0a AM |
4983 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
4984 | if (size == 32) | |
4985 | // R_PPC_EMB_NADDR16_HI | |
4986 | goto unsupp; | |
4987 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
4988 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
4989 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
4990 | break; |
4991 | ||
dd93cd0a AM |
4992 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
4993 | if (size == 32) | |
4994 | // R_PPC_EMB_NADDR16_HA | |
4995 | goto unsupp; | |
4996 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
4997 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
4998 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
4999 | break; |
5000 | ||
dd93cd0a AM |
5001 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
5002 | if (size == 32) | |
5003 | // R_PPC_EMB_SDAI16 | |
5004 | goto unsupp; | |
5005 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
5006 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
5007 | Reloc::addr16_ha3(view, value); | |
5008 | break; | |
5009 | ||
5010 | case elfcpp::R_PPC64_DTPREL16_DS: | |
5011 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
5012 | if (size == 32) | |
5013 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
5014 | goto unsupp; | |
5015 | case elfcpp::R_PPC64_TPREL16_DS: | |
5016 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
5017 | if (size == 32) | |
5018 | // R_PPC_TLSGD, R_PPC_TLSLD | |
5019 | break; | |
cf43a2fe AM |
5020 | case elfcpp::R_PPC64_ADDR16_DS: |
5021 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
5022 | case elfcpp::R_PPC64_TOC16_DS: |
5023 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
5024 | case elfcpp::R_PPC64_GOT16_DS: |
5025 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
5026 | case elfcpp::R_PPC64_SECTOFF_DS: | |
5027 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3ea0a085 | 5028 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
5029 | break; |
5030 | ||
5031 | case elfcpp::R_POWERPC_ADDR14: | |
5032 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5033 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5034 | case elfcpp::R_POWERPC_REL14: | |
5035 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5036 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 5037 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
5038 | break; |
5039 | ||
5040 | case elfcpp::R_POWERPC_COPY: | |
5041 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5042 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5043 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 5044 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
5045 | case elfcpp::R_PPC64_JMP_IREL: |
5046 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
5047 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
5048 | _("unexpected reloc %u in object file"), | |
5049 | r_type); | |
5050 | break; | |
5051 | ||
dd93cd0a AM |
5052 | case elfcpp::R_PPC_EMB_SDA21: |
5053 | if (size == 32) | |
5054 | goto unsupp; | |
5055 | else | |
5056 | { | |
5057 | // R_PPC64_TOCSAVE. For the time being this can be ignored. | |
5058 | } | |
5059 | break; | |
5060 | ||
5061 | case elfcpp::R_PPC_EMB_SDA2I16: | |
5062 | case elfcpp::R_PPC_EMB_SDA2REL: | |
5063 | if (size == 32) | |
5064 | goto unsupp; | |
5065 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
5066 | break; |
5067 | ||
dd93cd0a AM |
5068 | case elfcpp::R_POWERPC_PLT32: |
5069 | case elfcpp::R_POWERPC_PLTREL32: | |
5070 | case elfcpp::R_POWERPC_PLT16_LO: | |
5071 | case elfcpp::R_POWERPC_PLT16_HI: | |
5072 | case elfcpp::R_POWERPC_PLT16_HA: | |
5073 | case elfcpp::R_PPC_SDAREL16: | |
5074 | case elfcpp::R_POWERPC_ADDR30: | |
5075 | case elfcpp::R_PPC64_PLT64: | |
5076 | case elfcpp::R_PPC64_PLTREL64: | |
5077 | case elfcpp::R_PPC64_PLTGOT16: | |
5078 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
5079 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
5080 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
5081 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
5082 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
5083 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
5084 | case elfcpp::R_PPC_EMB_RELSEC16: | |
5085 | case elfcpp::R_PPC_EMB_RELST_LO: | |
5086 | case elfcpp::R_PPC_EMB_RELST_HI: | |
5087 | case elfcpp::R_PPC_EMB_RELST_HA: | |
5088 | case elfcpp::R_PPC_EMB_BIT_FLD: | |
5089 | case elfcpp::R_PPC_EMB_RELSDA: | |
5090 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 5091 | default: |
dd93cd0a | 5092 | unsupp: |
42cacb20 DE |
5093 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
5094 | _("unsupported reloc %u"), | |
5095 | r_type); | |
5096 | break; | |
5097 | } | |
f4baf0d4 | 5098 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK) |
3ea0a085 AM |
5099 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
5100 | _("relocation overflow")); | |
42cacb20 DE |
5101 | |
5102 | return true; | |
5103 | } | |
5104 | ||
42cacb20 DE |
5105 | // Relocate section data. |
5106 | ||
5107 | template<int size, bool big_endian> | |
5108 | void | |
5109 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
5110 | const Relocate_info<size, big_endian>* relinfo, |
5111 | unsigned int sh_type, | |
5112 | const unsigned char* prelocs, | |
5113 | size_t reloc_count, | |
5114 | Output_section* output_section, | |
5115 | bool needs_special_offset_handling, | |
5116 | unsigned char* view, | |
c9269dff | 5117 | Address address, |
d83ce4e3 AM |
5118 | section_size_type view_size, |
5119 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
5120 | { |
5121 | typedef Target_powerpc<size, big_endian> Powerpc; | |
5122 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
5123 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
5124 | Powerpc_comdat_behavior; | |
42cacb20 DE |
5125 | |
5126 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
5127 | ||
5128 | gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA, | |
168a4726 | 5129 | Powerpc_relocate, Powerpc_comdat_behavior>( |
42cacb20 DE |
5130 | relinfo, |
5131 | this, | |
5132 | prelocs, | |
5133 | reloc_count, | |
5134 | output_section, | |
5135 | needs_special_offset_handling, | |
5136 | view, | |
5137 | address, | |
364c7fa5 ILT |
5138 | view_size, |
5139 | reloc_symbol_changes); | |
42cacb20 DE |
5140 | } |
5141 | ||
cf43a2fe | 5142 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 5143 | { |
cf43a2fe AM |
5144 | public: |
5145 | // Return the strategy to use for a local symbol which is not a | |
5146 | // section symbol, given the relocation type. | |
5147 | inline Relocatable_relocs::Reloc_strategy | |
5148 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
5149 | { | |
5150 | if (r_type == 0 && r_sym == 0) | |
5151 | return Relocatable_relocs::RELOC_DISCARD; | |
5152 | return Relocatable_relocs::RELOC_COPY; | |
5153 | } | |
5154 | ||
5155 | // Return the strategy to use for a local symbol which is a section | |
5156 | // symbol, given the relocation type. | |
5157 | inline Relocatable_relocs::Reloc_strategy | |
5158 | local_section_strategy(unsigned int, Relobj*) | |
5159 | { | |
5160 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
5161 | } | |
5162 | ||
5163 | // Return the strategy to use for a global symbol, given the | |
5164 | // relocation type, the object, and the symbol index. | |
5165 | inline Relocatable_relocs::Reloc_strategy | |
5166 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
5167 | { | |
5168 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
5169 | return Relocatable_relocs::RELOC_SPECIAL; | |
5170 | return Relocatable_relocs::RELOC_COPY; | |
5171 | } | |
5172 | }; | |
42cacb20 DE |
5173 | |
5174 | // Scan the relocs during a relocatable link. | |
5175 | ||
5176 | template<int size, bool big_endian> | |
5177 | void | |
5178 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
5179 | Symbol_table* symtab, |
5180 | Layout* layout, | |
5181 | Sized_relobj_file<size, big_endian>* object, | |
5182 | unsigned int data_shndx, | |
5183 | unsigned int sh_type, | |
5184 | const unsigned char* prelocs, | |
5185 | size_t reloc_count, | |
5186 | Output_section* output_section, | |
5187 | bool needs_special_offset_handling, | |
5188 | size_t local_symbol_count, | |
5189 | const unsigned char* plocal_symbols, | |
5190 | Relocatable_relocs* rr) | |
42cacb20 DE |
5191 | { |
5192 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
5193 | ||
42cacb20 | 5194 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, |
d83ce4e3 | 5195 | Powerpc_scan_relocatable_reloc>( |
42cacb20 DE |
5196 | symtab, |
5197 | layout, | |
5198 | object, | |
5199 | data_shndx, | |
5200 | prelocs, | |
5201 | reloc_count, | |
5202 | output_section, | |
5203 | needs_special_offset_handling, | |
5204 | local_symbol_count, | |
5205 | plocal_symbols, | |
5206 | rr); | |
5207 | } | |
5208 | ||
7404fe1b | 5209 | // Emit relocations for a section. |
dd93cd0a AM |
5210 | // This is a modified version of the function by the same name in |
5211 | // target-reloc.h. Using relocate_special_relocatable for | |
5212 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
5213 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
5214 | |
5215 | template<int size, bool big_endian> | |
5216 | void | |
7404fe1b | 5217 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
5218 | const Relocate_info<size, big_endian>* relinfo, |
5219 | unsigned int sh_type, | |
5220 | const unsigned char* prelocs, | |
5221 | size_t reloc_count, | |
5222 | Output_section* output_section, | |
62fe925a | 5223 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
42cacb20 | 5224 | const Relocatable_relocs* rr, |
cf43a2fe | 5225 | unsigned char*, |
dd93cd0a | 5226 | Address view_address, |
cf43a2fe | 5227 | section_size_type, |
42cacb20 DE |
5228 | unsigned char* reloc_view, |
5229 | section_size_type reloc_view_size) | |
5230 | { | |
5231 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
5232 | ||
cf43a2fe AM |
5233 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
5234 | Reltype; | |
5235 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write | |
5236 | Reltype_write; | |
5237 | const int reloc_size | |
5238 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
cf43a2fe AM |
5239 | |
5240 | Powerpc_relobj<size, big_endian>* const object | |
5241 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
5242 | const unsigned int local_count = object->local_symbol_count(); | |
5243 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 5244 | Address got2_addend = 0; |
cf43a2fe | 5245 | if (got2_shndx != 0) |
c9269dff AM |
5246 | { |
5247 | got2_addend = object->get_output_section_offset(got2_shndx); | |
5248 | gold_assert(got2_addend != invalid_address); | |
5249 | } | |
cf43a2fe AM |
5250 | |
5251 | unsigned char* pwrite = reloc_view; | |
7404fe1b | 5252 | bool zap_next = false; |
cf43a2fe AM |
5253 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
5254 | { | |
5255 | Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i); | |
5256 | if (strategy == Relocatable_relocs::RELOC_DISCARD) | |
5257 | continue; | |
5258 | ||
5259 | Reltype reloc(prelocs); | |
5260 | Reltype_write reloc_write(pwrite); | |
5261 | ||
7404fe1b | 5262 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 5263 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
5264 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
5265 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
5266 | const unsigned int orig_r_sym = r_sym; | |
5267 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
5268 | = reloc.get_r_addend(); | |
5269 | const Symbol* gsym = NULL; | |
5270 | ||
5271 | if (zap_next) | |
5272 | { | |
5273 | // We could arrange to discard these and other relocs for | |
5274 | // tls optimised sequences in the strategy methods, but for | |
5275 | // now do as BFD ld does. | |
5276 | r_type = elfcpp::R_POWERPC_NONE; | |
5277 | zap_next = false; | |
5278 | } | |
cf43a2fe AM |
5279 | |
5280 | // Get the new symbol index. | |
cf43a2fe AM |
5281 | if (r_sym < local_count) |
5282 | { | |
5283 | switch (strategy) | |
5284 | { | |
5285 | case Relocatable_relocs::RELOC_COPY: | |
5286 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 5287 | if (r_sym != 0) |
dd93cd0a | 5288 | { |
7404fe1b AM |
5289 | r_sym = object->symtab_index(r_sym); |
5290 | gold_assert(r_sym != -1U); | |
dd93cd0a | 5291 | } |
cf43a2fe AM |
5292 | break; |
5293 | ||
5294 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
5295 | { | |
5296 | // We are adjusting a section symbol. We need to find | |
5297 | // the symbol table index of the section symbol for | |
5298 | // the output section corresponding to input section | |
5299 | // in which this symbol is defined. | |
5300 | gold_assert(r_sym < local_count); | |
5301 | bool is_ordinary; | |
5302 | unsigned int shndx = | |
5303 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
5304 | gold_assert(is_ordinary); | |
5305 | Output_section* os = object->output_section(shndx); | |
5306 | gold_assert(os != NULL); | |
5307 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 5308 | r_sym = os->symtab_index(); |
cf43a2fe AM |
5309 | } |
5310 | break; | |
5311 | ||
5312 | default: | |
5313 | gold_unreachable(); | |
5314 | } | |
5315 | } | |
5316 | else | |
5317 | { | |
7404fe1b | 5318 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
5319 | gold_assert(gsym != NULL); |
5320 | if (gsym->is_forwarder()) | |
5321 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
5322 | ||
5323 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 5324 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
5325 | } |
5326 | ||
5327 | // Get the new offset--the location in the output section where | |
5328 | // this relocation should be applied. | |
cf43a2fe | 5329 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 5330 | offset += offset_in_output_section; |
cf43a2fe AM |
5331 | else |
5332 | { | |
c9269dff AM |
5333 | section_offset_type sot_offset = |
5334 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 5335 | section_offset_type new_sot_offset = |
c9269dff AM |
5336 | output_section->output_offset(object, relinfo->data_shndx, |
5337 | sot_offset); | |
cf43a2fe | 5338 | gold_assert(new_sot_offset != -1); |
7404fe1b | 5339 | offset = new_sot_offset; |
cf43a2fe AM |
5340 | } |
5341 | ||
dd93cd0a AM |
5342 | // In an object file, r_offset is an offset within the section. |
5343 | // In an executable or dynamic object, generated by | |
5344 | // --emit-relocs, r_offset is an absolute address. | |
7404fe1b | 5345 | if (!parameters->options().relocatable()) |
dd93cd0a | 5346 | { |
7404fe1b | 5347 | offset += view_address; |
dd93cd0a | 5348 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 5349 | offset -= offset_in_output_section; |
dd93cd0a AM |
5350 | } |
5351 | ||
cf43a2fe | 5352 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
5353 | if (strategy == Relocatable_relocs::RELOC_COPY) |
5354 | ; | |
5355 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
5356 | { | |
7404fe1b | 5357 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
cf43a2fe AM |
5358 | addend = psymval->value(object, addend); |
5359 | } | |
5360 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
5361 | { | |
5362 | if (addend >= 32768) | |
5363 | addend += got2_addend; | |
5364 | } | |
5365 | else | |
5366 | gold_unreachable(); | |
5367 | ||
7404fe1b AM |
5368 | if (!parameters->options().relocatable()) |
5369 | { | |
5370 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
5371 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
5372 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
5373 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
5374 | { | |
5375 | // First instruction of a global dynamic sequence, | |
5376 | // arg setup insn. | |
5377 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
5378 | switch (this->optimize_tls_gd(final)) | |
5379 | { | |
5380 | case tls::TLSOPT_TO_IE: | |
5381 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
5382 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
5383 | break; | |
5384 | case tls::TLSOPT_TO_LE: | |
5385 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
5386 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
5387 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
5388 | else | |
5389 | { | |
5390 | r_type = elfcpp::R_POWERPC_NONE; | |
5391 | offset -= 2 * big_endian; | |
5392 | } | |
5393 | break; | |
5394 | default: | |
5395 | break; | |
5396 | } | |
5397 | } | |
5398 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
5399 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
5400 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
5401 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
5402 | { | |
5403 | // First instruction of a local dynamic sequence, | |
5404 | // arg setup insn. | |
5405 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
5406 | { | |
5407 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
5408 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
5409 | { | |
5410 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
5411 | const Output_section* os = relinfo->layout->tls_segment() | |
5412 | ->first_section(); | |
5413 | gold_assert(os != NULL); | |
5414 | gold_assert(os->needs_symtab_index()); | |
5415 | r_sym = os->symtab_index(); | |
5416 | addend = dtp_offset; | |
5417 | } | |
5418 | else | |
5419 | { | |
5420 | r_type = elfcpp::R_POWERPC_NONE; | |
5421 | offset -= 2 * big_endian; | |
5422 | } | |
5423 | } | |
5424 | } | |
5425 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
5426 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
5427 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
5428 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
5429 | { | |
5430 | // First instruction of initial exec sequence. | |
5431 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
5432 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
5433 | { | |
5434 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
5435 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
5436 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
5437 | else | |
5438 | { | |
5439 | r_type = elfcpp::R_POWERPC_NONE; | |
5440 | offset -= 2 * big_endian; | |
5441 | } | |
5442 | } | |
5443 | } | |
5444 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5445 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5446 | { | |
5447 | // Second instruction of a global dynamic sequence, | |
5448 | // the __tls_get_addr call | |
5449 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
5450 | switch (this->optimize_tls_gd(final)) | |
5451 | { | |
5452 | case tls::TLSOPT_TO_IE: | |
5453 | r_type = elfcpp::R_POWERPC_NONE; | |
5454 | zap_next = true; | |
5455 | break; | |
5456 | case tls::TLSOPT_TO_LE: | |
5457 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
5458 | offset += 2 * big_endian; | |
5459 | zap_next = true; | |
5460 | break; | |
5461 | default: | |
5462 | break; | |
5463 | } | |
5464 | } | |
5465 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5466 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5467 | { | |
5468 | // Second instruction of a local dynamic sequence, | |
5469 | // the __tls_get_addr call | |
5470 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
5471 | { | |
5472 | const Output_section* os = relinfo->layout->tls_segment() | |
5473 | ->first_section(); | |
5474 | gold_assert(os != NULL); | |
5475 | gold_assert(os->needs_symtab_index()); | |
5476 | r_sym = os->symtab_index(); | |
5477 | addend = dtp_offset; | |
5478 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
5479 | offset += 2 * big_endian; | |
5480 | zap_next = true; | |
5481 | } | |
5482 | } | |
5483 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
5484 | { | |
5485 | // Second instruction of an initial exec sequence | |
5486 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
5487 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
5488 | { | |
5489 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
5490 | offset += 2 * big_endian; | |
5491 | } | |
5492 | } | |
5493 | } | |
5494 | ||
5495 | reloc_write.put_r_offset(offset); | |
5496 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
5497 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
5498 | |
5499 | pwrite += reloc_size; | |
5500 | } | |
5501 | ||
5502 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
5503 | == reloc_view_size); | |
42cacb20 DE |
5504 | } |
5505 | ||
5506 | // Return the value to use for a dynamic which requires special | |
5507 | // treatment. This is how we support equality comparisons of function | |
5508 | // pointers across shared library boundaries, as described in the | |
5509 | // processor specific ABI supplement. | |
5510 | ||
5511 | template<int size, bool big_endian> | |
5512 | uint64_t | |
5513 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
5514 | { | |
cf43a2fe AM |
5515 | if (size == 32) |
5516 | { | |
5517 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
e5d5f5ed | 5518 | const Output_data_glink<size, big_endian>* glink = this->glink_section(); |
c9824451 AM |
5519 | unsigned int glink_index = glink->find_entry(gsym); |
5520 | return glink->address() + glink_index * glink->glink_entry_size(); | |
5521 | } | |
5522 | else | |
5523 | gold_unreachable(); | |
5524 | } | |
5525 | ||
5526 | // Return the PLT address to use for a local symbol. | |
5527 | template<int size, bool big_endian> | |
5528 | uint64_t | |
5529 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
5530 | const Relobj* object, | |
5531 | unsigned int symndx) const | |
5532 | { | |
5533 | if (size == 32) | |
5534 | { | |
5535 | const Sized_relobj<size, big_endian>* relobj | |
5536 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
5537 | const Output_data_glink<size, big_endian>* glink = this->glink_section(); | |
5538 | unsigned int glink_index = glink->find_entry(relobj->sized_relobj(), | |
5539 | symndx); | |
5540 | return glink->address() + glink_index * glink->glink_entry_size(); | |
5541 | } | |
5542 | else | |
5543 | gold_unreachable(); | |
5544 | } | |
5545 | ||
5546 | // Return the PLT address to use for a global symbol. | |
5547 | template<int size, bool big_endian> | |
5548 | uint64_t | |
5549 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
5550 | const Symbol* gsym) const | |
5551 | { | |
5552 | if (size == 32) | |
5553 | { | |
5554 | const Output_data_glink<size, big_endian>* glink = this->glink_section(); | |
5555 | unsigned int glink_index = glink->find_entry(gsym); | |
e5d5f5ed | 5556 | return glink->address() + glink_index * glink->glink_entry_size(); |
cf43a2fe AM |
5557 | } |
5558 | else | |
5559 | gold_unreachable(); | |
42cacb20 DE |
5560 | } |
5561 | ||
bd73a62d AM |
5562 | // Return the offset to use for the GOT_INDX'th got entry which is |
5563 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
5564 | template<int size, bool big_endian> | |
5565 | int64_t | |
5566 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
5567 | const Relobj* object, | |
5568 | unsigned int symndx, | |
5569 | unsigned int got_indx) const | |
5570 | { | |
5571 | const Powerpc_relobj<size, big_endian>* ppc_object | |
5572 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
5573 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
5574 | { | |
5575 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
5576 | got_type <= GOT_TYPE_TPREL; | |
5577 | got_type = Got_type(got_type + 1)) | |
5578 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
5579 | { | |
5580 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
5581 | if (got_type == GOT_TYPE_TLSGD) | |
5582 | off += size / 8; | |
5583 | if (off == got_indx * (size / 8)) | |
5584 | { | |
5585 | if (got_type == GOT_TYPE_TPREL) | |
5586 | return -tp_offset; | |
5587 | else | |
5588 | return -dtp_offset; | |
5589 | } | |
5590 | } | |
5591 | } | |
5592 | gold_unreachable(); | |
5593 | } | |
5594 | ||
5595 | // Return the offset to use for the GOT_INDX'th got entry which is | |
5596 | // for global tls symbol GSYM. | |
5597 | template<int size, bool big_endian> | |
5598 | int64_t | |
5599 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
5600 | Symbol* gsym, | |
5601 | unsigned int got_indx) const | |
5602 | { | |
5603 | if (gsym->type() == elfcpp::STT_TLS) | |
5604 | { | |
5605 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
5606 | got_type <= GOT_TYPE_TPREL; | |
5607 | got_type = Got_type(got_type + 1)) | |
5608 | if (gsym->has_got_offset(got_type)) | |
5609 | { | |
5610 | unsigned int off = gsym->got_offset(got_type); | |
5611 | if (got_type == GOT_TYPE_TLSGD) | |
5612 | off += size / 8; | |
5613 | if (off == got_indx * (size / 8)) | |
5614 | { | |
5615 | if (got_type == GOT_TYPE_TPREL) | |
5616 | return -tp_offset; | |
5617 | else | |
5618 | return -dtp_offset; | |
5619 | } | |
5620 | } | |
5621 | } | |
5622 | gold_unreachable(); | |
5623 | } | |
5624 | ||
42cacb20 DE |
5625 | // The selector for powerpc object files. |
5626 | ||
5627 | template<int size, bool big_endian> | |
5628 | class Target_selector_powerpc : public Target_selector | |
5629 | { | |
5630 | public: | |
5631 | Target_selector_powerpc() | |
5632 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
03ef7571 ILT |
5633 | (size == 64 |
5634 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
5635 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
5636 | (size == 64 | |
5637 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
5638 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
5639 | { } |
5640 | ||
2e702c99 RM |
5641 | virtual Target* |
5642 | do_recognize(Input_file*, off_t, int machine, int, int) | |
42cacb20 DE |
5643 | { |
5644 | switch (size) | |
5645 | { | |
5646 | case 64: | |
2ea97941 | 5647 | if (machine != elfcpp::EM_PPC64) |
42cacb20 DE |
5648 | return NULL; |
5649 | break; | |
5650 | ||
5651 | case 32: | |
2ea97941 | 5652 | if (machine != elfcpp::EM_PPC) |
42cacb20 DE |
5653 | return NULL; |
5654 | break; | |
5655 | ||
5656 | default: | |
5657 | return NULL; | |
5658 | } | |
5659 | ||
7f055c20 | 5660 | return this->instantiate_target(); |
42cacb20 DE |
5661 | } |
5662 | ||
2e702c99 RM |
5663 | virtual Target* |
5664 | do_instantiate_target() | |
7f055c20 | 5665 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
5666 | }; |
5667 | ||
5668 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
5669 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
5670 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
5671 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
5672 | ||
5673 | } // End anonymous namespace. |