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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
219d1afa | 3 | // Copyright (C) 2008-2018 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 | ||
dc3714f3 | 26 | #include <set> |
ec661b9d | 27 | #include <algorithm> |
42cacb20 | 28 | #include "elfcpp.h" |
9d5781f8 | 29 | #include "dwarf.h" |
42cacb20 DE |
30 | #include "parameters.h" |
31 | #include "reloc.h" | |
32 | #include "powerpc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
37 | #include "copy-relocs.h" | |
38 | #include "target.h" | |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
f345227a | 43 | #include "gc.h" |
42cacb20 DE |
44 | |
45 | namespace | |
46 | { | |
47 | ||
48 | using namespace gold; | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | class Output_data_plt_powerpc; | |
52 | ||
ec661b9d AM |
53 | template<int size, bool big_endian> |
54 | class Output_data_brlt_powerpc; | |
55 | ||
cf43a2fe AM |
56 | template<int size, bool big_endian> |
57 | class Output_data_got_powerpc; | |
58 | ||
59 | template<int size, bool big_endian> | |
60 | class Output_data_glink; | |
61 | ||
ec661b9d AM |
62 | template<int size, bool big_endian> |
63 | class Stub_table; | |
64 | ||
d49044c7 AM |
65 | template<int size, bool big_endian> |
66 | class Output_data_save_res; | |
67 | ||
a3e60ddb AM |
68 | template<int size, bool big_endian> |
69 | class Target_powerpc; | |
70 | ||
71 | struct Stub_table_owner | |
72 | { | |
dc60b26d AM |
73 | Stub_table_owner() |
74 | : output_section(NULL), owner(NULL) | |
75 | { } | |
76 | ||
a3e60ddb AM |
77 | Output_section* output_section; |
78 | const Output_section::Input_section* owner; | |
79 | }; | |
80 | ||
23cedd1d AM |
81 | inline bool is_branch_reloc(unsigned int); |
82 | ||
83 | template<int size> | |
84 | inline bool is_plt16_reloc(unsigned int); | |
4d9aa155 | 85 | |
590b87ff AM |
86 | // Counter incremented on every Powerpc_relobj constructed. |
87 | static uint32_t object_id = 0; | |
88 | ||
cf43a2fe AM |
89 | template<int size, bool big_endian> |
90 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
91 | { | |
92 | public: | |
dd93cd0a | 93 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
94 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
95 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 96 | |
cf43a2fe AM |
97 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
98 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
99 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff AM |
100 | uniq_(object_id++), special_(0), relatoc_(0), toc_(0), |
101 | has_small_toc_reloc_(false), opd_valid_(false), | |
102 | e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), | |
103 | access_from_map_(), has14_(), stub_table_index_(), st_other_() | |
b4f7960d AM |
104 | { |
105 | this->set_abiversion(0); | |
106 | } | |
cf43a2fe AM |
107 | |
108 | ~Powerpc_relobj() | |
109 | { } | |
110 | ||
b4f7960d AM |
111 | // Read the symbols then set up st_other vector. |
112 | void | |
113 | do_read_symbols(Read_symbols_data*); | |
114 | ||
5edad15d AM |
115 | // Arrange to always relocate .toc first. |
116 | virtual void | |
117 | do_relocate_sections( | |
118 | const Symbol_table* symtab, const Layout* layout, | |
119 | const unsigned char* pshdrs, Output_file* of, | |
120 | typename Sized_relobj_file<size, big_endian>::Views* pviews); | |
121 | ||
122 | // The .toc section index. | |
123 | unsigned int | |
124 | toc_shndx() const | |
125 | { | |
126 | return this->toc_; | |
127 | } | |
128 | ||
129 | // Mark .toc entry at OFF as not optimizable. | |
130 | void | |
131 | set_no_toc_opt(Address off) | |
132 | { | |
133 | if (this->no_toc_opt_.empty()) | |
134 | this->no_toc_opt_.resize(this->section_size(this->toc_shndx()) | |
135 | / (size / 8)); | |
136 | off /= size / 8; | |
137 | if (off < this->no_toc_opt_.size()) | |
138 | this->no_toc_opt_[off] = true; | |
139 | } | |
140 | ||
141 | // Mark the entire .toc as not optimizable. | |
142 | void | |
143 | set_no_toc_opt() | |
144 | { | |
145 | this->no_toc_opt_.resize(1); | |
146 | this->no_toc_opt_[0] = true; | |
147 | } | |
148 | ||
149 | // Return true if code using the .toc entry at OFF should not be edited. | |
150 | bool | |
151 | no_toc_opt(Address off) const | |
152 | { | |
153 | if (this->no_toc_opt_.empty()) | |
154 | return false; | |
155 | off /= size / 8; | |
156 | if (off >= this->no_toc_opt_.size()) | |
157 | return true; | |
158 | return this->no_toc_opt_[off]; | |
159 | } | |
160 | ||
c9269dff | 161 | // The .got2 section shndx. |
cf43a2fe AM |
162 | unsigned int |
163 | got2_shndx() const | |
164 | { | |
165 | if (size == 32) | |
c9269dff | 166 | return this->special_; |
cf43a2fe AM |
167 | else |
168 | return 0; | |
169 | } | |
170 | ||
c9269dff AM |
171 | // The .opd section shndx. |
172 | unsigned int | |
173 | opd_shndx() const | |
174 | { | |
175 | if (size == 32) | |
176 | return 0; | |
177 | else | |
178 | return this->special_; | |
179 | } | |
180 | ||
181 | // Init OPD entry arrays. | |
182 | void | |
183 | init_opd(size_t opd_size) | |
184 | { | |
185 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 186 | this->opd_ent_.resize(count); |
c9269dff AM |
187 | } |
188 | ||
189 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
190 | unsigned int |
191 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
192 | { |
193 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
194 | gold_assert(ndx < this->opd_ent_.size()); |
195 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 196 | if (value != NULL) |
bfdfa4cd AM |
197 | *value = this->opd_ent_[ndx].off; |
198 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
199 | } |
200 | ||
201 | // Set section and offset of function entry for .opd + R_OFF. | |
202 | void | |
dd93cd0a | 203 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
204 | { |
205 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
206 | gold_assert(ndx < this->opd_ent_.size()); |
207 | this->opd_ent_[ndx].shndx = shndx; | |
208 | this->opd_ent_[ndx].off = value; | |
209 | } | |
210 | ||
211 | // Return discard flag for .opd + R_OFF. | |
212 | bool | |
213 | get_opd_discard(Address r_off) const | |
214 | { | |
215 | size_t ndx = this->opd_ent_ndx(r_off); | |
216 | gold_assert(ndx < this->opd_ent_.size()); | |
217 | return this->opd_ent_[ndx].discard; | |
218 | } | |
219 | ||
220 | // Set discard flag for .opd + R_OFF. | |
221 | void | |
222 | set_opd_discard(Address r_off) | |
223 | { | |
224 | size_t ndx = this->opd_ent_ndx(r_off); | |
225 | gold_assert(ndx < this->opd_ent_.size()); | |
226 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
227 | } |
228 | ||
e81fea4d AM |
229 | bool |
230 | opd_valid() const | |
231 | { return this->opd_valid_; } | |
232 | ||
233 | void | |
234 | set_opd_valid() | |
235 | { this->opd_valid_ = true; } | |
236 | ||
c9269dff AM |
237 | // Examine .rela.opd to build info about function entry points. |
238 | void | |
239 | scan_opd_relocs(size_t reloc_count, | |
240 | const unsigned char* prelocs, | |
241 | const unsigned char* plocal_syms); | |
242 | ||
5edad15d AM |
243 | // Returns true if a code sequence loading a TOC entry can be |
244 | // converted into code calculating a TOC pointer relative offset. | |
245 | bool | |
246 | make_toc_relative(Target_powerpc<size, big_endian>* target, | |
247 | Address* value); | |
248 | ||
26a4e9cb AM |
249 | // Perform the Sized_relobj_file method, then set up opd info from |
250 | // .opd relocs. | |
c9269dff AM |
251 | void |
252 | do_read_relocs(Read_relocs_data*); | |
253 | ||
cf43a2fe AM |
254 | bool |
255 | do_find_special_sections(Read_symbols_data* sd); | |
256 | ||
ec4dbad3 AM |
257 | // Adjust this local symbol value. Return false if the symbol |
258 | // should be discarded from the output file. | |
259 | bool | |
260 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
261 | { | |
262 | if (size == 64 && this->opd_shndx() != 0) | |
263 | { | |
264 | bool is_ordinary; | |
265 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
266 | return true; | |
267 | if (this->get_opd_discard(lv->input_value())) | |
268 | return false; | |
269 | } | |
270 | return true; | |
271 | } | |
272 | ||
6c77229c AM |
273 | Access_from* |
274 | access_from_map() | |
275 | { return &this->access_from_map_; } | |
276 | ||
277 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
278 | // section at DST_OFF. | |
279 | void | |
efc6fa12 | 280 | add_reference(Relobj* src_obj, |
6c77229c AM |
281 | unsigned int src_indx, |
282 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
283 | { | |
284 | Section_id src_id(src_obj, src_indx); | |
285 | this->access_from_map_[dst_off].insert(src_id); | |
286 | } | |
287 | ||
288 | // Add a reference to the code section specified by the .opd entry | |
289 | // at DST_OFF | |
290 | void | |
291 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
292 | { | |
293 | size_t ndx = this->opd_ent_ndx(dst_off); | |
294 | if (ndx >= this->opd_ent_.size()) | |
295 | this->opd_ent_.resize(ndx + 1); | |
296 | this->opd_ent_[ndx].gc_mark = true; | |
297 | } | |
298 | ||
299 | void | |
300 | process_gc_mark(Symbol_table* symtab) | |
301 | { | |
302 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
303 | if (this->opd_ent_[i].gc_mark) | |
304 | { | |
305 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 306 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
307 | } |
308 | } | |
309 | ||
dd93cd0a AM |
310 | // Return offset in output GOT section that this object will use |
311 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
312 | Address | |
313 | toc_base_offset() const | |
314 | { return 0x8000; } | |
315 | ||
d8f5a274 AM |
316 | void |
317 | set_has_small_toc_reloc() | |
318 | { has_small_toc_reloc_ = true; } | |
319 | ||
320 | bool | |
321 | has_small_toc_reloc() const | |
322 | { return has_small_toc_reloc_; } | |
323 | ||
ec661b9d AM |
324 | void |
325 | set_has_14bit_branch(unsigned int shndx) | |
326 | { | |
327 | if (shndx >= this->has14_.size()) | |
328 | this->has14_.resize(shndx + 1); | |
329 | this->has14_[shndx] = true; | |
330 | } | |
331 | ||
332 | bool | |
333 | has_14bit_branch(unsigned int shndx) const | |
334 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
335 | ||
336 | void | |
a3e60ddb | 337 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 338 | { |
a3e60ddb | 339 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 340 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 341 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
342 | } |
343 | ||
344 | Stub_table<size, big_endian>* | |
345 | stub_table(unsigned int shndx) | |
346 | { | |
a3e60ddb AM |
347 | if (shndx < this->stub_table_index_.size()) |
348 | { | |
349 | Target_powerpc<size, big_endian>* target | |
350 | = static_cast<Target_powerpc<size, big_endian>*>( | |
351 | parameters->sized_target<size, big_endian>()); | |
352 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
353 | if (indx < target->stub_tables().size()) |
354 | return target->stub_tables()[indx]; | |
a3e60ddb | 355 | } |
ec661b9d AM |
356 | return NULL; |
357 | } | |
358 | ||
a3e60ddb AM |
359 | void |
360 | clear_stub_table() | |
361 | { | |
362 | this->stub_table_index_.clear(); | |
363 | } | |
364 | ||
590b87ff AM |
365 | uint32_t |
366 | uniq() const | |
367 | { return this->uniq_; } | |
368 | ||
b4f7960d AM |
369 | int |
370 | abiversion() const | |
371 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
372 | ||
373 | // Set ABI version for input and output | |
374 | void | |
375 | set_abiversion(int ver); | |
376 | ||
7ee7ff70 AM |
377 | unsigned int |
378 | st_other (unsigned int symndx) const | |
379 | { | |
380 | return this->st_other_[symndx]; | |
381 | } | |
382 | ||
b4f7960d AM |
383 | unsigned int |
384 | ppc64_local_entry_offset(const Symbol* sym) const | |
385 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
386 | ||
387 | unsigned int | |
388 | ppc64_local_entry_offset(unsigned int symndx) const | |
389 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
390 | ||
cf43a2fe | 391 | private: |
bfdfa4cd AM |
392 | struct Opd_ent |
393 | { | |
394 | unsigned int shndx; | |
c6de8ed4 AM |
395 | bool discard : 1; |
396 | bool gc_mark : 1; | |
26a4e9cb | 397 | Address off; |
bfdfa4cd AM |
398 | }; |
399 | ||
400 | // Return index into opd_ent_ array for .opd entry at OFF. | |
401 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
402 | // apart when the language doesn't use the last 8-byte word, the | |
403 | // environment pointer. Thus dividing the entry section offset by | |
404 | // 16 will give an index into opd_ent_ that works for either layout | |
405 | // of .opd. (It leaves some elements of the vector unused when .opd | |
406 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
407 | // until relocations are processed, and in any case it is possible | |
408 | // for an object to have some entries spaced 16 bytes apart and | |
409 | // others 24 bytes apart.) | |
c9269dff AM |
410 | size_t |
411 | opd_ent_ndx(size_t off) const | |
412 | { return off >> 4;} | |
413 | ||
590b87ff AM |
414 | // Per object unique identifier |
415 | uint32_t uniq_; | |
416 | ||
c9269dff AM |
417 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. |
418 | unsigned int special_; | |
bfdfa4cd | 419 | |
5edad15d AM |
420 | // For 64-bit the .rela.toc and .toc section shdnx. |
421 | unsigned int relatoc_; | |
422 | unsigned int toc_; | |
423 | ||
d8f5a274 AM |
424 | // For 64-bit, whether this object uses small model relocs to access |
425 | // the toc. | |
426 | bool has_small_toc_reloc_; | |
427 | ||
bfdfa4cd AM |
428 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
429 | // vector is valid. The flag could be made atomic and set in | |
430 | // do_read_relocs with memory_order_release and then tested with | |
431 | // memory_order_acquire, potentially resulting in fewer entries in | |
432 | // access_from_map_. | |
433 | bool opd_valid_; | |
434 | ||
590b87ff AM |
435 | // Header e_flags |
436 | elfcpp::Elf_Word e_flags_; | |
437 | ||
438 | // For 64-bit, an array with one entry per 64-bit word in the .toc | |
439 | // section, set if accesses using that word cannot be optimised. | |
440 | std::vector<bool> no_toc_opt_; | |
441 | ||
c9269dff AM |
442 | // The first 8-byte word of an OPD entry gives the address of the |
443 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 444 | // relocation on this word. The following vector records the |
c9269dff | 445 | // section and offset specified by these relocations. |
bfdfa4cd AM |
446 | std::vector<Opd_ent> opd_ent_; |
447 | ||
e81fea4d | 448 | // References made to this object's .opd section when running |
bfdfa4cd AM |
449 | // gc_process_relocs for another object, before the opd_ent_ vector |
450 | // is valid for this object. | |
e81fea4d | 451 | Access_from access_from_map_; |
ec661b9d AM |
452 | |
453 | // Whether input section has a 14-bit branch reloc. | |
454 | std::vector<bool> has14_; | |
455 | ||
456 | // The stub table to use for a given input section. | |
a3e60ddb | 457 | std::vector<unsigned int> stub_table_index_; |
b4f7960d | 458 | |
b4f7960d AM |
459 | // ELF st_other field for local symbols. |
460 | std::vector<unsigned char> st_other_; | |
cf43a2fe AM |
461 | }; |
462 | ||
dc3714f3 AM |
463 | template<int size, bool big_endian> |
464 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
465 | { | |
466 | public: | |
467 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
468 | ||
469 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
470 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
471 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff | 472 | opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_() |
b4f7960d AM |
473 | { |
474 | this->set_abiversion(0); | |
475 | } | |
dc3714f3 AM |
476 | |
477 | ~Powerpc_dynobj() | |
478 | { } | |
479 | ||
480 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
481 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
482 | void | |
483 | do_read_symbols(Read_symbols_data*); | |
484 | ||
485 | // The .opd section shndx. | |
486 | unsigned int | |
487 | opd_shndx() const | |
488 | { | |
489 | return this->opd_shndx_; | |
490 | } | |
491 | ||
492 | // The .opd section address. | |
493 | Address | |
494 | opd_address() const | |
495 | { | |
496 | return this->opd_address_; | |
497 | } | |
498 | ||
499 | // Init OPD entry arrays. | |
500 | void | |
501 | init_opd(size_t opd_size) | |
502 | { | |
503 | size_t count = this->opd_ent_ndx(opd_size); | |
504 | this->opd_ent_.resize(count); | |
505 | } | |
506 | ||
507 | // Return section and offset of function entry for .opd + R_OFF. | |
508 | unsigned int | |
509 | get_opd_ent(Address r_off, Address* value = NULL) const | |
510 | { | |
511 | size_t ndx = this->opd_ent_ndx(r_off); | |
512 | gold_assert(ndx < this->opd_ent_.size()); | |
513 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
514 | if (value != NULL) | |
515 | *value = this->opd_ent_[ndx].off; | |
516 | return this->opd_ent_[ndx].shndx; | |
517 | } | |
518 | ||
519 | // Set section and offset of function entry for .opd + R_OFF. | |
520 | void | |
521 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
522 | { | |
523 | size_t ndx = this->opd_ent_ndx(r_off); | |
524 | gold_assert(ndx < this->opd_ent_.size()); | |
525 | this->opd_ent_[ndx].shndx = shndx; | |
526 | this->opd_ent_[ndx].off = value; | |
527 | } | |
528 | ||
b4f7960d AM |
529 | int |
530 | abiversion() const | |
531 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
532 | ||
533 | // Set ABI version for input and output. | |
534 | void | |
535 | set_abiversion(int ver); | |
536 | ||
dc3714f3 AM |
537 | private: |
538 | // Used to specify extent of executable sections. | |
539 | struct Sec_info | |
540 | { | |
541 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
542 | : start(start_), len(len_), shndx(shndx_) | |
543 | { } | |
544 | ||
545 | bool | |
546 | operator<(const Sec_info& that) const | |
547 | { return this->start < that.start; } | |
548 | ||
549 | Address start; | |
550 | Address len; | |
551 | unsigned int shndx; | |
552 | }; | |
553 | ||
554 | struct Opd_ent | |
555 | { | |
556 | unsigned int shndx; | |
557 | Address off; | |
558 | }; | |
559 | ||
560 | // Return index into opd_ent_ array for .opd entry at OFF. | |
561 | size_t | |
562 | opd_ent_ndx(size_t off) const | |
563 | { return off >> 4;} | |
564 | ||
565 | // For 64-bit the .opd section shndx and address. | |
566 | unsigned int opd_shndx_; | |
567 | Address opd_address_; | |
568 | ||
590b87ff AM |
569 | // Header e_flags |
570 | elfcpp::Elf_Word e_flags_; | |
571 | ||
dc3714f3 AM |
572 | // The first 8-byte word of an OPD entry gives the address of the |
573 | // entry point of the function. Records the section and offset | |
574 | // corresponding to the address. Note that in dynamic objects, | |
575 | // offset is *not* relative to the section. | |
576 | std::vector<Opd_ent> opd_ent_; | |
577 | }; | |
578 | ||
5edad15d AM |
579 | // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the |
580 | // base class will emit. | |
581 | ||
582 | template<int sh_type, int size, bool big_endian> | |
583 | class Powerpc_copy_relocs : public Copy_relocs<sh_type, size, big_endian> | |
584 | { | |
585 | public: | |
586 | Powerpc_copy_relocs() | |
587 | : Copy_relocs<sh_type, size, big_endian>(elfcpp::R_POWERPC_COPY) | |
588 | { } | |
589 | ||
590 | // Emit any saved relocations which turn out to be needed. This is | |
591 | // called after all the relocs have been scanned. | |
592 | void | |
593 | emit(Output_data_reloc<sh_type, true, size, big_endian>*); | |
594 | }; | |
595 | ||
42cacb20 DE |
596 | template<int size, bool big_endian> |
597 | class Target_powerpc : public Sized_target<size, big_endian> | |
598 | { | |
599 | public: | |
d83ce4e3 AM |
600 | typedef |
601 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 602 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 603 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
7e57d19e | 604 | typedef Unordered_set<Symbol_location, Symbol_location_hash> Tocsave_loc; |
c9269dff | 605 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
606 | // Offset of tp and dtp pointers from start of TLS block. |
607 | static const Address tp_offset = 0x7000; | |
608 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
609 | |
610 | Target_powerpc() | |
611 | : Sized_target<size, big_endian>(&powerpc_info), | |
2d7ad24e | 612 | got_(NULL), plt_(NULL), iplt_(NULL), lplt_(NULL), brlt_section_(NULL), |
5edad15d | 613 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(), |
43819297 | 614 | tlsld_got_offset_(-1U), |
7e57d19e | 615 | stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), |
7ee7ff70 AM |
616 | plt_thread_safe_(false), plt_localentry0_(false), |
617 | plt_localentry0_init_(false), has_localentry0_(false), | |
34e0882b | 618 | has_tls_get_addr_opt_(false), |
7ee7ff70 | 619 | relax_failed_(false), relax_fail_count_(0), |
34e0882b AM |
620 | stub_group_size_(0), savres_section_(0), |
621 | tls_get_addr_(NULL), tls_get_addr_opt_(NULL) | |
42cacb20 DE |
622 | { |
623 | } | |
624 | ||
2e702c99 | 625 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
626 | // garbage collection. |
627 | void | |
ad0f2072 | 628 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
629 | Layout* layout, |
630 | Sized_relobj_file<size, big_endian>* object, | |
631 | unsigned int data_shndx, | |
632 | unsigned int sh_type, | |
633 | const unsigned char* prelocs, | |
634 | size_t reloc_count, | |
635 | Output_section* output_section, | |
636 | bool needs_special_offset_handling, | |
637 | size_t local_symbol_count, | |
638 | const unsigned char* plocal_symbols); | |
6d03d481 | 639 | |
42cacb20 DE |
640 | // Scan the relocations to look for symbol adjustments. |
641 | void | |
ad0f2072 | 642 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 643 | Layout* layout, |
6fa2a40b | 644 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
645 | unsigned int data_shndx, |
646 | unsigned int sh_type, | |
647 | const unsigned char* prelocs, | |
648 | size_t reloc_count, | |
649 | Output_section* output_section, | |
650 | bool needs_special_offset_handling, | |
651 | size_t local_symbol_count, | |
652 | const unsigned char* plocal_symbols); | |
921b5322 AM |
653 | |
654 | // Map input .toc section to output .got section. | |
655 | const char* | |
656 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
657 | { | |
658 | if (size == 64 && strcmp(name, ".toc") == 0) | |
659 | { | |
660 | *plen = 4; | |
661 | return ".got"; | |
662 | } | |
663 | return NULL; | |
664 | } | |
665 | ||
f3a0ed29 AM |
666 | // Provide linker defined save/restore functions. |
667 | void | |
668 | define_save_restore_funcs(Layout*, Symbol_table*); | |
669 | ||
ec661b9d AM |
670 | // No stubs unless a final link. |
671 | bool | |
672 | do_may_relax() const | |
673 | { return !parameters->options().relocatable(); } | |
674 | ||
675 | bool | |
676 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
677 | ||
9d5781f8 AM |
678 | void |
679 | do_plt_fde_location(const Output_data*, unsigned char*, | |
680 | uint64_t*, off_t*) const; | |
681 | ||
ec661b9d AM |
682 | // Stash info about branches, for stub generation. |
683 | void | |
684 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
685 | unsigned int data_shndx, Address r_offset, | |
686 | unsigned int r_type, unsigned int r_sym, Address addend) | |
687 | { | |
688 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
689 | this->branch_info_.push_back(info); | |
690 | if (r_type == elfcpp::R_POWERPC_REL14 | |
691 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
692 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
693 | ppc_object->set_has_14bit_branch(data_shndx); | |
694 | } | |
695 | ||
7e57d19e AM |
696 | // Return whether the last branch is a plt call, and if so, mark the |
697 | // branch as having an R_PPC64_TOCSAVE. | |
698 | bool | |
699 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
700 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
701 | { | |
702 | return (size == 64 | |
703 | && !this->branch_info_.empty() | |
704 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
705 | r_offset, this, symtab)); | |
706 | } | |
707 | ||
708 | // Say the given location, that of a nop in a function prologue with | |
709 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
710 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
711 | void | |
712 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
713 | unsigned int shndx, Address offset) | |
714 | { | |
715 | Symbol_location loc; | |
716 | loc.object = ppc_object; | |
717 | loc.shndx = shndx; | |
718 | loc.offset = offset; | |
719 | this->tocsave_loc_.insert(loc); | |
720 | } | |
721 | ||
722 | // Accessor | |
723 | const Tocsave_loc | |
724 | tocsave_loc() const | |
725 | { | |
726 | return this->tocsave_loc_; | |
727 | } | |
728 | ||
f43ba157 AM |
729 | void |
730 | do_define_standard_symbols(Symbol_table*, Layout*); | |
731 | ||
42cacb20 DE |
732 | // Finalize the sections. |
733 | void | |
f59f41f3 | 734 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
735 | |
736 | // Return the value to use for a dynamic which requires special | |
737 | // treatment. | |
738 | uint64_t | |
739 | do_dynsym_value(const Symbol*) const; | |
740 | ||
c9824451 AM |
741 | // Return the PLT address to use for a local symbol. |
742 | uint64_t | |
743 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
744 | ||
745 | // Return the PLT address to use for a global symbol. | |
746 | uint64_t | |
747 | do_plt_address_for_global(const Symbol*) const; | |
748 | ||
bd73a62d AM |
749 | // Return the offset to use for the GOT_INDX'th got entry which is |
750 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
751 | int64_t | |
752 | do_tls_offset_for_local(const Relobj* object, | |
753 | unsigned int symndx, | |
754 | unsigned int got_indx) const; | |
755 | ||
756 | // Return the offset to use for the GOT_INDX'th got entry which is | |
757 | // for global tls symbol GSYM. | |
758 | int64_t | |
759 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
760 | ||
dc3714f3 AM |
761 | void |
762 | do_function_location(Symbol_location*) const; | |
763 | ||
4d9aa155 AM |
764 | bool |
765 | do_can_check_for_function_pointers() const | |
766 | { return true; } | |
767 | ||
bbec1a5d AM |
768 | // Adjust -fsplit-stack code which calls non-split-stack code. |
769 | void | |
770 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
771 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 772 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
773 | unsigned char* view, section_size_type view_size, |
774 | std::string* from, std::string* to) const; | |
775 | ||
42cacb20 DE |
776 | // Relocate a section. |
777 | void | |
778 | relocate_section(const Relocate_info<size, big_endian>*, | |
779 | unsigned int sh_type, | |
780 | const unsigned char* prelocs, | |
781 | size_t reloc_count, | |
782 | Output_section* output_section, | |
783 | bool needs_special_offset_handling, | |
784 | unsigned char* view, | |
c9269dff | 785 | Address view_address, |
364c7fa5 ILT |
786 | section_size_type view_size, |
787 | const Reloc_symbol_changes*); | |
42cacb20 DE |
788 | |
789 | // Scan the relocs during a relocatable link. | |
790 | void | |
ad0f2072 | 791 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 792 | Layout* layout, |
6fa2a40b | 793 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
794 | unsigned int data_shndx, |
795 | unsigned int sh_type, | |
796 | const unsigned char* prelocs, | |
797 | size_t reloc_count, | |
798 | Output_section* output_section, | |
799 | bool needs_special_offset_handling, | |
800 | size_t local_symbol_count, | |
801 | const unsigned char* plocal_symbols, | |
802 | Relocatable_relocs*); | |
803 | ||
4d625b70 CC |
804 | // Scan the relocs for --emit-relocs. |
805 | void | |
806 | emit_relocs_scan(Symbol_table* symtab, | |
807 | Layout* layout, | |
808 | Sized_relobj_file<size, big_endian>* object, | |
809 | unsigned int data_shndx, | |
810 | unsigned int sh_type, | |
811 | const unsigned char* prelocs, | |
812 | size_t reloc_count, | |
813 | Output_section* output_section, | |
814 | bool needs_special_offset_handling, | |
815 | size_t local_symbol_count, | |
816 | const unsigned char* plocal_syms, | |
817 | Relocatable_relocs* rr); | |
818 | ||
7404fe1b | 819 | // Emit relocations for a section. |
42cacb20 | 820 | void |
7404fe1b AM |
821 | relocate_relocs(const Relocate_info<size, big_endian>*, |
822 | unsigned int sh_type, | |
823 | const unsigned char* prelocs, | |
824 | size_t reloc_count, | |
825 | Output_section* output_section, | |
62fe925a RM |
826 | typename elfcpp::Elf_types<size>::Elf_Off |
827 | offset_in_output_section, | |
7404fe1b AM |
828 | unsigned char*, |
829 | Address view_address, | |
830 | section_size_type, | |
831 | unsigned char* reloc_view, | |
832 | section_size_type reloc_view_size); | |
42cacb20 DE |
833 | |
834 | // Return whether SYM is defined by the ABI. | |
835 | bool | |
9c2d0ef9 | 836 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 837 | { |
cf43a2fe | 838 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
839 | } |
840 | ||
841 | // Return the size of the GOT section. | |
842 | section_size_type | |
0e70b911 | 843 | got_size() const |
42cacb20 DE |
844 | { |
845 | gold_assert(this->got_ != NULL); | |
846 | return this->got_->data_size(); | |
847 | } | |
848 | ||
cf43a2fe AM |
849 | // Get the PLT section. |
850 | const Output_data_plt_powerpc<size, big_endian>* | |
851 | plt_section() const | |
852 | { | |
853 | gold_assert(this->plt_ != NULL); | |
854 | return this->plt_; | |
855 | } | |
856 | ||
e5d5f5ed AM |
857 | // Get the IPLT section. |
858 | const Output_data_plt_powerpc<size, big_endian>* | |
859 | iplt_section() const | |
860 | { | |
861 | gold_assert(this->iplt_ != NULL); | |
862 | return this->iplt_; | |
863 | } | |
864 | ||
2d7ad24e AM |
865 | // Get the LPLT section. |
866 | const Output_data_plt_powerpc<size, big_endian>* | |
867 | lplt_section() const | |
868 | { | |
869 | return this->lplt_; | |
870 | } | |
871 | ||
08be3224 AM |
872 | // Return the plt offset and section for the given global sym. |
873 | Address | |
874 | plt_off(const Symbol* gsym, | |
875 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
876 | { | |
877 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
878 | && gsym->can_use_relative_reloc(false)) | |
879 | *sec = this->iplt_section(); | |
880 | else | |
881 | *sec = this->plt_section(); | |
882 | return gsym->plt_offset(); | |
883 | } | |
884 | ||
885 | // Return the plt offset and section for the given local sym. | |
886 | Address | |
887 | plt_off(const Sized_relobj_file<size, big_endian>* relobj, | |
888 | unsigned int local_sym_index, | |
889 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
890 | { | |
2d7ad24e AM |
891 | const Symbol_value<size>* lsym = relobj->local_symbol(local_sym_index); |
892 | if (lsym->is_ifunc_symbol()) | |
893 | *sec = this->iplt_section(); | |
894 | else | |
895 | *sec = this->lplt_section(); | |
08be3224 AM |
896 | return relobj->local_plt_offset(local_sym_index); |
897 | } | |
898 | ||
cf43a2fe AM |
899 | // Get the .glink section. |
900 | const Output_data_glink<size, big_endian>* | |
901 | glink_section() const | |
902 | { | |
903 | gold_assert(this->glink_ != NULL); | |
904 | return this->glink_; | |
905 | } | |
906 | ||
9055360d AM |
907 | Output_data_glink<size, big_endian>* |
908 | glink_section() | |
909 | { | |
910 | gold_assert(this->glink_ != NULL); | |
911 | return this->glink_; | |
912 | } | |
913 | ||
9d5781f8 AM |
914 | bool has_glink() const |
915 | { return this->glink_ != NULL; } | |
916 | ||
cf43a2fe AM |
917 | // Get the GOT section. |
918 | const Output_data_got_powerpc<size, big_endian>* | |
919 | got_section() const | |
920 | { | |
921 | gold_assert(this->got_ != NULL); | |
922 | return this->got_; | |
923 | } | |
924 | ||
26a4e9cb AM |
925 | // Get the GOT section, creating it if necessary. |
926 | Output_data_got_powerpc<size, big_endian>* | |
927 | got_section(Symbol_table*, Layout*); | |
928 | ||
cf43a2fe AM |
929 | Object* |
930 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
931 | const elfcpp::Ehdr<size, big_endian>&); | |
932 | ||
0e70b911 CC |
933 | // Return the number of entries in the GOT. |
934 | unsigned int | |
935 | got_entry_count() const | |
936 | { | |
937 | if (this->got_ == NULL) | |
938 | return 0; | |
939 | return this->got_size() / (size / 8); | |
940 | } | |
941 | ||
942 | // Return the number of entries in the PLT. | |
943 | unsigned int | |
944 | plt_entry_count() const; | |
945 | ||
946 | // Return the offset of the first non-reserved PLT entry. | |
947 | unsigned int | |
b4f7960d AM |
948 | first_plt_entry_offset() const |
949 | { | |
950 | if (size == 32) | |
951 | return 0; | |
952 | if (this->abiversion() >= 2) | |
953 | return 16; | |
954 | return 24; | |
955 | } | |
0e70b911 CC |
956 | |
957 | // Return the size of each PLT entry. | |
958 | unsigned int | |
b4f7960d AM |
959 | plt_entry_size() const |
960 | { | |
961 | if (size == 32) | |
962 | return 4; | |
963 | if (this->abiversion() >= 2) | |
964 | return 8; | |
965 | return 24; | |
966 | } | |
0e70b911 | 967 | |
d49044c7 AM |
968 | Output_data_save_res<size, big_endian>* |
969 | savres_section() const | |
970 | { | |
971 | return this->savres_section_; | |
972 | } | |
973 | ||
e81fea4d AM |
974 | // Add any special sections for this symbol to the gc work list. |
975 | // For powerpc64, this adds the code section of a function | |
976 | // descriptor. | |
977 | void | |
978 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
979 | ||
980 | // Handle target specific gc actions when adding a gc reference from | |
981 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
982 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
983 | // section of a function descriptor. | |
984 | void | |
985 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 986 | Relobj* src_obj, |
e81fea4d | 987 | unsigned int src_shndx, |
efc6fa12 | 988 | Relobj* dst_obj, |
e81fea4d AM |
989 | unsigned int dst_shndx, |
990 | Address dst_off) const; | |
991 | ||
ec661b9d AM |
992 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
993 | const Stub_tables& | |
994 | stub_tables() const | |
995 | { return this->stub_tables_; } | |
996 | ||
997 | const Output_data_brlt_powerpc<size, big_endian>* | |
998 | brlt_section() const | |
999 | { return this->brlt_section_; } | |
1000 | ||
1001 | void | |
1002 | add_branch_lookup_table(Address to) | |
1003 | { | |
1004 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
1005 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
1006 | } | |
1007 | ||
1008 | Address | |
1009 | find_branch_lookup_table(Address to) | |
1010 | { | |
1011 | typename Branch_lookup_table::const_iterator p | |
1012 | = this->branch_lookup_table_.find(to); | |
1013 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
1014 | } | |
1015 | ||
1016 | void | |
1017 | write_branch_lookup_table(unsigned char *oview) | |
1018 | { | |
1019 | for (typename Branch_lookup_table::const_iterator p | |
1020 | = this->branch_lookup_table_.begin(); | |
1021 | p != this->branch_lookup_table_.end(); | |
1022 | ++p) | |
1023 | { | |
4d5effb9 | 1024 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
1025 | } |
1026 | } | |
1027 | ||
590b87ff AM |
1028 | // Wrapper used after relax to define a local symbol in output data, |
1029 | // from the end if value < 0. | |
1030 | void | |
1031 | define_local(Symbol_table* symtab, const char* name, | |
1032 | Output_data* od, Address value, unsigned int symsize) | |
1033 | { | |
1034 | Symbol* sym | |
1035 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
1036 | od, value, symsize, elfcpp::STT_NOTYPE, | |
1037 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1038 | static_cast<Signed_address>(value) < 0, | |
1039 | false); | |
1040 | // We are creating this symbol late, so need to fix up things | |
1041 | // done early in Layout::finalize. | |
1042 | sym->set_dynsym_index(-1U); | |
1043 | } | |
1044 | ||
9e69ed50 AM |
1045 | bool |
1046 | plt_thread_safe() const | |
1047 | { return this->plt_thread_safe_; } | |
1048 | ||
7ee7ff70 AM |
1049 | bool |
1050 | plt_localentry0() const | |
1051 | { return this->plt_localentry0_; } | |
1052 | ||
1053 | void | |
1054 | set_has_localentry0() | |
1055 | { | |
1056 | this->has_localentry0_ = true; | |
1057 | } | |
1058 | ||
1059 | bool | |
1060 | is_elfv2_localentry0(const Symbol* gsym) const | |
1061 | { | |
1062 | return (size == 64 | |
1063 | && this->abiversion() >= 2 | |
1064 | && this->plt_localentry0() | |
1065 | && gsym->type() == elfcpp::STT_FUNC | |
1066 | && gsym->is_defined() | |
565ed01a AM |
1067 | && gsym->nonvis() >> 3 == 0 |
1068 | && !gsym->non_zero_localentry()); | |
7ee7ff70 AM |
1069 | } |
1070 | ||
1071 | bool | |
1072 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1073 | unsigned int r_sym) const | |
1074 | { | |
1075 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1076 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1077 | ||
1078 | if (size == 64 | |
1079 | && this->abiversion() >= 2 | |
1080 | && this->plt_localentry0() | |
1081 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1082 | { | |
1083 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1084 | bool is_ordinary; | |
1085 | if (!psymval->is_ifunc_symbol() | |
1086 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1087 | && is_ordinary) | |
1088 | return true; | |
1089 | } | |
1090 | return false; | |
1091 | } | |
1092 | ||
565ed01a AM |
1093 | // Remember any symbols seen with non-zero localentry, even those |
1094 | // not providing a definition | |
1095 | bool | |
1096 | resolve(Symbol* to, const elfcpp::Sym<size, big_endian>& sym, Object*, | |
1097 | const char*) | |
1098 | { | |
1099 | if (size == 64) | |
1100 | { | |
1101 | unsigned char st_other = sym.get_st_other(); | |
1102 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1103 | to->set_non_zero_localentry(); | |
1104 | } | |
1105 | // We haven't resolved anything, continue normal processing. | |
1106 | return false; | |
1107 | } | |
1108 | ||
b4f7960d | 1109 | int |
aacb3b6d | 1110 | abiversion() const |
b4f7960d AM |
1111 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } |
1112 | ||
1113 | void | |
aacb3b6d | 1114 | set_abiversion(int ver) |
b4f7960d AM |
1115 | { |
1116 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1117 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1118 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1119 | this->set_processor_specific_flags(flags); | |
1120 | } | |
1121 | ||
34e0882b AM |
1122 | Symbol* |
1123 | tls_get_addr_opt() const | |
1124 | { return this->tls_get_addr_opt_; } | |
1125 | ||
1126 | Symbol* | |
1127 | tls_get_addr() const | |
1128 | { return this->tls_get_addr_; } | |
1129 | ||
1130 | // If optimizing __tls_get_addr calls, whether this is the | |
1131 | // "__tls_get_addr" symbol. | |
1132 | bool | |
1133 | is_tls_get_addr_opt(const Symbol* gsym) const | |
1134 | { | |
1135 | return this->tls_get_addr_opt_ && (gsym == this->tls_get_addr_ | |
1136 | || gsym == this->tls_get_addr_opt_); | |
1137 | } | |
1138 | ||
1139 | bool | |
1140 | replace_tls_get_addr(const Symbol* gsym) const | |
1141 | { return this->tls_get_addr_opt_ && gsym == this->tls_get_addr_; } | |
1142 | ||
1143 | void | |
1144 | set_has_tls_get_addr_opt() | |
1145 | { this->has_tls_get_addr_opt_ = true; } | |
1146 | ||
aacb3b6d | 1147 | // Offset to toc save stack slot |
b4f7960d | 1148 | int |
aacb3b6d | 1149 | stk_toc() const |
b4f7960d AM |
1150 | { return this->abiversion() < 2 ? 40 : 24; } |
1151 | ||
34e0882b AM |
1152 | // Offset to linker save stack slot. ELFv2 doesn't have a linker word, |
1153 | // so use the CR save slot. Used only by __tls_get_addr call stub, | |
1154 | // relying on __tls_get_addr not saving CR itself. | |
1155 | int | |
1156 | stk_linker() const | |
1157 | { return this->abiversion() < 2 ? 32 : 8; } | |
1158 | ||
42cacb20 DE |
1159 | private: |
1160 | ||
e3deeb9c AM |
1161 | class Track_tls |
1162 | { | |
1163 | public: | |
1164 | enum Tls_get_addr | |
1165 | { | |
1166 | NOT_EXPECTED = 0, | |
1167 | EXPECTED = 1, | |
1168 | SKIP = 2, | |
1169 | NORMAL = 3 | |
1170 | }; | |
1171 | ||
1172 | Track_tls() | |
aacb3b6d | 1173 | : tls_get_addr_state_(NOT_EXPECTED), |
e3deeb9c AM |
1174 | relinfo_(NULL), relnum_(0), r_offset_(0) |
1175 | { } | |
1176 | ||
1177 | ~Track_tls() | |
1178 | { | |
aacb3b6d | 1179 | if (this->tls_get_addr_state_ != NOT_EXPECTED) |
e3deeb9c AM |
1180 | this->missing(); |
1181 | } | |
1182 | ||
1183 | void | |
1184 | missing(void) | |
1185 | { | |
1186 | if (this->relinfo_ != NULL) | |
1187 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1188 | _("missing expected __tls_get_addr call")); | |
1189 | } | |
1190 | ||
1191 | void | |
1192 | expect_tls_get_addr_call( | |
1193 | const Relocate_info<size, big_endian>* relinfo, | |
1194 | size_t relnum, | |
1195 | Address r_offset) | |
1196 | { | |
aacb3b6d | 1197 | this->tls_get_addr_state_ = EXPECTED; |
e3deeb9c AM |
1198 | this->relinfo_ = relinfo; |
1199 | this->relnum_ = relnum; | |
1200 | this->r_offset_ = r_offset; | |
1201 | } | |
1202 | ||
1203 | void | |
1204 | expect_tls_get_addr_call() | |
aacb3b6d | 1205 | { this->tls_get_addr_state_ = EXPECTED; } |
e3deeb9c AM |
1206 | |
1207 | void | |
1208 | skip_next_tls_get_addr_call() | |
aacb3b6d | 1209 | {this->tls_get_addr_state_ = SKIP; } |
e3deeb9c AM |
1210 | |
1211 | Tls_get_addr | |
34e0882b AM |
1212 | maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, |
1213 | unsigned int r_type, const Symbol* gsym) | |
e3deeb9c AM |
1214 | { |
1215 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
23cedd1d AM |
1216 | || r_type == elfcpp::R_PPC_PLTREL24 |
1217 | || is_plt16_reloc<size>(r_type) | |
1218 | || r_type == elfcpp::R_POWERPC_PLTSEQ | |
1219 | || r_type == elfcpp::R_POWERPC_PLTCALL) | |
e3deeb9c | 1220 | && gsym != NULL |
34e0882b AM |
1221 | && (gsym == target->tls_get_addr() |
1222 | || gsym == target->tls_get_addr_opt())); | |
aacb3b6d AM |
1223 | Tls_get_addr last_tls = this->tls_get_addr_state_; |
1224 | this->tls_get_addr_state_ = NOT_EXPECTED; | |
e3deeb9c AM |
1225 | if (is_tls_call && last_tls != EXPECTED) |
1226 | return last_tls; | |
1227 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1228 | { | |
1229 | this->missing(); | |
1230 | return EXPECTED; | |
1231 | } | |
1232 | return NORMAL; | |
1233 | } | |
1234 | ||
1235 | private: | |
1236 | // What we're up to regarding calls to __tls_get_addr. | |
1237 | // On powerpc, the branch and link insn making a call to | |
1238 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1239 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
1240 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
1241 | // The marker relocation always comes first, and has the same | |
1242 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1243 | // argument. This ties the arg setup insn with the call insn, | |
1244 | // allowing ld to safely optimize away the call. We check that | |
1245 | // every call to __tls_get_addr has a marker relocation, and that | |
1246 | // every marker relocation is on a call to __tls_get_addr. | |
aacb3b6d | 1247 | Tls_get_addr tls_get_addr_state_; |
e3deeb9c AM |
1248 | // Info about the last reloc for error message. |
1249 | const Relocate_info<size, big_endian>* relinfo_; | |
1250 | size_t relnum_; | |
1251 | Address r_offset_; | |
1252 | }; | |
1253 | ||
42cacb20 | 1254 | // The class which scans relocations. |
e3deeb9c | 1255 | class Scan : protected Track_tls |
42cacb20 DE |
1256 | { |
1257 | public: | |
bfdfa4cd AM |
1258 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1259 | ||
42cacb20 | 1260 | Scan() |
e3deeb9c | 1261 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1262 | { } |
1263 | ||
95a2c8d6 | 1264 | static inline int |
88b8e639 | 1265 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1266 | |
42cacb20 | 1267 | inline void |
ad0f2072 | 1268 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1269 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1270 | unsigned int data_shndx, |
1271 | Output_section* output_section, | |
1272 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1273 | const elfcpp::Sym<size, big_endian>& lsym, |
1274 | bool is_discarded); | |
42cacb20 DE |
1275 | |
1276 | inline void | |
ad0f2072 | 1277 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1278 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1279 | unsigned int data_shndx, |
1280 | Output_section* output_section, | |
1281 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1282 | Symbol* gsym); | |
1283 | ||
21bb3914 ST |
1284 | inline bool |
1285 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1286 | Target_powerpc* , | |
f6971787 | 1287 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1288 | unsigned int , |
2e702c99 RM |
1289 | Output_section* , |
1290 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1291 | unsigned int r_type, |
2e702c99 | 1292 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1293 | { |
1294 | // PowerPC64 .opd is not folded, so any identical function text | |
1295 | // may be folded and we'll still keep function addresses distinct. | |
1296 | // That means no reloc is of concern here. | |
1297 | if (size == 64) | |
f6971787 AM |
1298 | { |
1299 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1300 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1301 | if (ppcobj->abiversion() == 1) | |
1302 | return false; | |
1303 | } | |
1304 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
1305 | // function code might be taking the address of the function. |
1306 | return !is_branch_reloc(r_type); | |
1307 | } | |
21bb3914 ST |
1308 | |
1309 | inline bool | |
1310 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1311 | Target_powerpc* , | |
f6971787 | 1312 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1313 | unsigned int , |
1314 | Output_section* , | |
4d9aa155 AM |
1315 | const elfcpp::Rela<size, big_endian>& , |
1316 | unsigned int r_type, | |
1317 | Symbol*) | |
1318 | { | |
1319 | // As above. | |
1320 | if (size == 64) | |
f6971787 AM |
1321 | { |
1322 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1323 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1324 | if (ppcobj->abiversion() == 1) | |
1325 | return false; | |
1326 | } | |
4d9aa155 AM |
1327 | return !is_branch_reloc(r_type); |
1328 | } | |
21bb3914 | 1329 | |
b3ccdeb5 | 1330 | static bool |
9055360d AM |
1331 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1332 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1333 | unsigned int r_type, bool report_err); |
1334 | ||
42cacb20 DE |
1335 | private: |
1336 | static void | |
6fa2a40b | 1337 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1338 | unsigned int r_type); |
1339 | ||
1340 | static void | |
6fa2a40b | 1341 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1342 | unsigned int r_type, Symbol*); |
1343 | ||
1344 | static void | |
1345 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1346 | Target_powerpc* target); | |
1347 | ||
1348 | void | |
1349 | check_non_pic(Relobj*, unsigned int r_type); | |
1350 | ||
1351 | // Whether we have issued an error about a non-PIC compilation. | |
1352 | bool issued_non_pic_error_; | |
1353 | }; | |
1354 | ||
1611bc4a AM |
1355 | bool |
1356 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1357 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1358 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1359 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1360 | |
42cacb20 | 1361 | // The class which implements relocation. |
e3deeb9c | 1362 | class Relocate : protected Track_tls |
42cacb20 DE |
1363 | { |
1364 | public: | |
dd93cd0a AM |
1365 | // Use 'at' branch hints when true, 'y' when false. |
1366 | // FIXME maybe: set this with an option. | |
1367 | static const bool is_isa_v2 = true; | |
1368 | ||
dd93cd0a | 1369 | Relocate() |
e3deeb9c | 1370 | : Track_tls() |
dd93cd0a AM |
1371 | { } |
1372 | ||
42cacb20 DE |
1373 | // Do a relocation. Return false if the caller should not issue |
1374 | // any warnings about this relocation. | |
1375 | inline bool | |
91a65d2f AM |
1376 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1377 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1378 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1379 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1380 | section_size_type); |
42cacb20 DE |
1381 | }; |
1382 | ||
168a4726 AM |
1383 | class Relocate_comdat_behavior |
1384 | { | |
1385 | public: | |
1386 | // Decide what the linker should do for relocations that refer to | |
1387 | // discarded comdat sections. | |
1388 | inline Comdat_behavior | |
1389 | get(const char* name) | |
1390 | { | |
1391 | gold::Default_comdat_behavior default_behavior; | |
1392 | Comdat_behavior ret = default_behavior.get(name); | |
43193fe9 | 1393 | if (ret == CB_ERROR) |
168a4726 AM |
1394 | { |
1395 | if (size == 32 | |
1396 | && (strcmp(name, ".fixup") == 0 | |
1397 | || strcmp(name, ".got2") == 0)) | |
1398 | ret = CB_IGNORE; | |
1399 | if (size == 64 | |
1400 | && (strcmp(name, ".opd") == 0 | |
1401 | || strcmp(name, ".toc") == 0 | |
1402 | || strcmp(name, ".toc1") == 0)) | |
1403 | ret = CB_IGNORE; | |
1404 | } | |
1405 | return ret; | |
1406 | } | |
1407 | }; | |
1408 | ||
dd93cd0a AM |
1409 | // Optimize the TLS relocation type based on what we know about the |
1410 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1411 | // known at link time. | |
1412 | ||
1413 | tls::Tls_optimization | |
1414 | optimize_tls_gd(bool is_final) | |
1415 | { | |
1416 | // If we are generating a shared library, then we can't do anything | |
1417 | // in the linker. | |
aacb3b6d AM |
1418 | if (parameters->options().shared() |
1419 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1420 | return tls::TLSOPT_NONE; |
1421 | ||
1422 | if (!is_final) | |
1423 | return tls::TLSOPT_TO_IE; | |
1424 | return tls::TLSOPT_TO_LE; | |
1425 | } | |
1426 | ||
1427 | tls::Tls_optimization | |
1428 | optimize_tls_ld() | |
1429 | { | |
aacb3b6d AM |
1430 | if (parameters->options().shared() |
1431 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1432 | return tls::TLSOPT_NONE; |
1433 | ||
1434 | return tls::TLSOPT_TO_LE; | |
1435 | } | |
1436 | ||
1437 | tls::Tls_optimization | |
1438 | optimize_tls_ie(bool is_final) | |
1439 | { | |
aacb3b6d AM |
1440 | if (!is_final |
1441 | || parameters->options().shared() | |
1442 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1443 | return tls::TLSOPT_NONE; |
1444 | ||
1445 | return tls::TLSOPT_TO_LE; | |
1446 | } | |
cf43a2fe | 1447 | |
cf43a2fe AM |
1448 | // Create glink. |
1449 | void | |
1450 | make_glink_section(Layout*); | |
42cacb20 | 1451 | |
cf43a2fe AM |
1452 | // Create the PLT section. |
1453 | void | |
40b469d7 | 1454 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1455 | |
e5d5f5ed | 1456 | void |
40b469d7 | 1457 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1458 | |
2d7ad24e AM |
1459 | void |
1460 | make_lplt_section(Layout*); | |
1461 | ||
ec661b9d AM |
1462 | void |
1463 | make_brlt_section(Layout*); | |
1464 | ||
42cacb20 DE |
1465 | // Create a PLT entry for a global symbol. |
1466 | void | |
ec661b9d | 1467 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1468 | |
1469 | // Create a PLT entry for a local IFUNC symbol. | |
1470 | void | |
40b469d7 | 1471 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1472 | Sized_relobj_file<size, big_endian>*, |
1473 | unsigned int); | |
1474 | ||
2d7ad24e AM |
1475 | // Create a PLT entry for a local non-IFUNC symbol. |
1476 | void | |
1477 | make_local_plt_entry(Layout*, | |
1478 | Sized_relobj_file<size, big_endian>*, | |
1479 | unsigned int); | |
1480 | ||
42cacb20 | 1481 | |
dd93cd0a AM |
1482 | // Create a GOT entry for local dynamic __tls_get_addr. |
1483 | unsigned int | |
1484 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1485 | Sized_relobj_file<size, big_endian>* object); | |
1486 | ||
42cacb20 | 1487 | unsigned int |
dd93cd0a AM |
1488 | tlsld_got_offset() const |
1489 | { | |
1490 | return this->tlsld_got_offset_; | |
1491 | } | |
42cacb20 | 1492 | |
42cacb20 DE |
1493 | // Get the dynamic reloc section, creating it if necessary. |
1494 | Reloc_section* | |
1495 | rela_dyn_section(Layout*); | |
1496 | ||
b3ccdeb5 AM |
1497 | // Similarly, but for ifunc symbols get the one for ifunc. |
1498 | Reloc_section* | |
1499 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1500 | ||
42cacb20 DE |
1501 | // Copy a relocation against a global symbol. |
1502 | void | |
ef9beddf | 1503 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1504 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1505 | unsigned int shndx, Output_section* output_section, |
1506 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1507 | { | |
859d7987 | 1508 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1509 | this->copy_relocs_.copy_reloc(symtab, layout, |
1510 | symtab->get_sized_symbol<size>(sym), | |
1511 | object, shndx, output_section, | |
859d7987 CC |
1512 | r_type, reloc.get_r_offset(), |
1513 | reloc.get_r_addend(), | |
1514 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1515 | } |
1516 | ||
0cfdc767 | 1517 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1518 | void |
a3e60ddb | 1519 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1520 | |
1521 | // Sort output sections by address. | |
1522 | struct Sort_sections | |
1523 | { | |
1524 | bool | |
1525 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1526 | { return sec1->address() < sec2->address(); } | |
1527 | }; | |
1528 | ||
1529 | class Branch_info | |
1530 | { | |
1531 | public: | |
1532 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1533 | unsigned int data_shndx, | |
1534 | Address r_offset, | |
1535 | unsigned int r_type, | |
1536 | unsigned int r_sym, | |
1537 | Address addend) | |
1538 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1539 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1540 | { } |
1541 | ||
1542 | ~Branch_info() | |
1543 | { } | |
1544 | ||
7e57d19e AM |
1545 | // Return whether this branch is going via a plt call stub, and if |
1546 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1547 | bool | |
1548 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1549 | unsigned int shndx, Address offset, | |
1550 | Target_powerpc* target, Symbol_table* symtab); | |
1551 | ||
ec661b9d | 1552 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1553 | bool |
ec661b9d AM |
1554 | make_stub(Stub_table<size, big_endian>*, |
1555 | Stub_table<size, big_endian>*, | |
1556 | Symbol_table*) const; | |
1557 | ||
1558 | private: | |
1559 | // The branch location.. | |
1560 | Powerpc_relobj<size, big_endian>* object_; | |
1561 | unsigned int shndx_; | |
1562 | Address offset_; | |
1563 | // ..and the branch type and destination. | |
7e57d19e AM |
1564 | unsigned int r_type_ : 31; |
1565 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1566 | unsigned int r_sym_; |
1567 | Address addend_; | |
1568 | }; | |
1569 | ||
42cacb20 DE |
1570 | // Information about this specific target which we pass to the |
1571 | // general Target structure. | |
1572 | static Target::Target_info powerpc_info; | |
1573 | ||
1574 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1575 | // These values are exposed to the ABI in an incremental link. |
1576 | // Do not renumber existing values without changing the version | |
1577 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1578 | enum Got_type |
1579 | { | |
dd93cd0a AM |
1580 | GOT_TYPE_STANDARD, |
1581 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1582 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1583 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1584 | }; |
1585 | ||
ec661b9d | 1586 | // The GOT section. |
cf43a2fe | 1587 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1588 | // The PLT section. This is a container for a table of addresses, |
1589 | // and their relocations. Each address in the PLT has a dynamic | |
1590 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1591 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1592 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1593 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1594 | // linker adds a stub that loads the PLT entry into ctr then | |
1595 | // branches to ctr. There may be more than one stub for each PLT | |
1596 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1597 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1598 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1599 | // The IPLT section. Like plt_, this is a container for a table of |
1600 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1601 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1602 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1603 | // entry in .glink for lazy resolution, and the relocation section | |
1604 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1605 | // the relocation section may contain relocations against | |
1606 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1607 | // relocation section will appear at the end of other dynamic | |
1608 | // relocations, so that ld.so applies these relocations after other | |
1609 | // dynamic relocations. In a static executable, the relocation | |
1610 | // section is emitted and marked with __rela_iplt_start and | |
1611 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1612 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
2d7ad24e AM |
1613 | // A PLT style section for local, non-ifunc symbols |
1614 | Output_data_plt_powerpc<size, big_endian>* lplt_; | |
ec661b9d AM |
1615 | // Section holding long branch destinations. |
1616 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1617 | // The .glink section. | |
cf43a2fe | 1618 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1619 | // The dynamic reloc section. |
42cacb20 DE |
1620 | Reloc_section* rela_dyn_; |
1621 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1622 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1623 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1624 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1625 | |
1626 | Stub_tables stub_tables_; | |
1627 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1628 | Branch_lookup_table branch_lookup_table_; | |
1629 | ||
1630 | typedef std::vector<Branch_info> Branches; | |
1631 | Branches branch_info_; | |
7e57d19e | 1632 | Tocsave_loc tocsave_loc_; |
9e69ed50 AM |
1633 | |
1634 | bool plt_thread_safe_; | |
7ee7ff70 AM |
1635 | bool plt_localentry0_; |
1636 | bool plt_localentry0_init_; | |
1637 | bool has_localentry0_; | |
34e0882b | 1638 | bool has_tls_get_addr_opt_; |
a3e60ddb AM |
1639 | |
1640 | bool relax_failed_; | |
1641 | int relax_fail_count_; | |
1642 | int32_t stub_group_size_; | |
d49044c7 AM |
1643 | |
1644 | Output_data_save_res<size, big_endian> *savres_section_; | |
34e0882b AM |
1645 | |
1646 | // The "__tls_get_addr" symbol, if present | |
1647 | Symbol* tls_get_addr_; | |
1648 | // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. | |
1649 | Symbol* tls_get_addr_opt_; | |
42cacb20 DE |
1650 | }; |
1651 | ||
1652 | template<> | |
1653 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1654 | { | |
1655 | 32, // size | |
1656 | true, // is_big_endian | |
1657 | elfcpp::EM_PPC, // machine_code | |
1658 | false, // has_make_symbol | |
1659 | false, // has_resolve | |
1660 | false, // has_code_fill | |
1661 | true, // is_default_stack_executable | |
b3ce541e | 1662 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1663 | '\0', // wrap_char |
1664 | "/usr/lib/ld.so.1", // dynamic_linker | |
1665 | 0x10000000, // default_text_segment_address | |
1666 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1667 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1668 | false, // isolate_execinstr |
1669 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1670 | elfcpp::SHN_UNDEF, // small_common_shndx |
1671 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1672 | 0, // small_common_section_flags | |
05a352e6 DK |
1673 | 0, // large_common_section_flags |
1674 | NULL, // attributes_section | |
a67858e0 | 1675 | NULL, // attributes_vendor |
8d9743bd MK |
1676 | "_start", // entry_symbol_name |
1677 | 32, // hash_entry_size | |
bce5a025 | 1678 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1679 | }; |
1680 | ||
1681 | template<> | |
1682 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1683 | { | |
1684 | 32, // size | |
1685 | false, // is_big_endian | |
1686 | elfcpp::EM_PPC, // machine_code | |
1687 | false, // has_make_symbol | |
1688 | false, // has_resolve | |
1689 | false, // has_code_fill | |
1690 | true, // is_default_stack_executable | |
b3ce541e | 1691 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1692 | '\0', // wrap_char |
1693 | "/usr/lib/ld.so.1", // dynamic_linker | |
1694 | 0x10000000, // default_text_segment_address | |
1695 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1696 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1697 | false, // isolate_execinstr |
1698 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1699 | elfcpp::SHN_UNDEF, // small_common_shndx |
1700 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1701 | 0, // small_common_section_flags | |
05a352e6 DK |
1702 | 0, // large_common_section_flags |
1703 | NULL, // attributes_section | |
a67858e0 | 1704 | NULL, // attributes_vendor |
8d9743bd MK |
1705 | "_start", // entry_symbol_name |
1706 | 32, // hash_entry_size | |
bce5a025 | 1707 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1708 | }; |
1709 | ||
1710 | template<> | |
1711 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1712 | { | |
1713 | 64, // size | |
1714 | true, // is_big_endian | |
1715 | elfcpp::EM_PPC64, // machine_code | |
1716 | false, // has_make_symbol | |
565ed01a | 1717 | true, // has_resolve |
42cacb20 | 1718 | false, // has_code_fill |
ec769010 | 1719 | false, // is_default_stack_executable |
b3ce541e | 1720 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1721 | '\0', // wrap_char |
1722 | "/usr/lib/ld.so.1", // dynamic_linker | |
1723 | 0x10000000, // default_text_segment_address | |
1724 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1725 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1726 | false, // isolate_execinstr |
1727 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1728 | elfcpp::SHN_UNDEF, // small_common_shndx |
1729 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1730 | 0, // small_common_section_flags | |
05a352e6 DK |
1731 | 0, // large_common_section_flags |
1732 | NULL, // attributes_section | |
a67858e0 | 1733 | NULL, // attributes_vendor |
8d9743bd MK |
1734 | "_start", // entry_symbol_name |
1735 | 32, // hash_entry_size | |
bce5a025 | 1736 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1737 | }; |
1738 | ||
1739 | template<> | |
1740 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1741 | { | |
1742 | 64, // size | |
1743 | false, // is_big_endian | |
1744 | elfcpp::EM_PPC64, // machine_code | |
1745 | false, // has_make_symbol | |
565ed01a | 1746 | true, // has_resolve |
42cacb20 | 1747 | false, // has_code_fill |
ec769010 | 1748 | false, // is_default_stack_executable |
b3ce541e | 1749 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1750 | '\0', // wrap_char |
1751 | "/usr/lib/ld.so.1", // dynamic_linker | |
1752 | 0x10000000, // default_text_segment_address | |
1753 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1754 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1755 | false, // isolate_execinstr |
1756 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1757 | elfcpp::SHN_UNDEF, // small_common_shndx |
1758 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1759 | 0, // small_common_section_flags | |
05a352e6 DK |
1760 | 0, // large_common_section_flags |
1761 | NULL, // attributes_section | |
a67858e0 | 1762 | NULL, // attributes_vendor |
8d9743bd MK |
1763 | "_start", // entry_symbol_name |
1764 | 32, // hash_entry_size | |
bce5a025 | 1765 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1766 | }; |
1767 | ||
dd93cd0a AM |
1768 | inline bool |
1769 | is_branch_reloc(unsigned int r_type) | |
1770 | { | |
1771 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1772 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1773 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1774 | || r_type == elfcpp::R_POWERPC_REL14 | |
1775 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1776 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1777 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1778 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1779 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1780 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1781 | } | |
1782 | ||
08be3224 AM |
1783 | // Reloc resolves to plt entry. |
1784 | template<int size> | |
1785 | inline bool | |
1786 | is_plt16_reloc(unsigned int r_type) | |
1787 | { | |
1788 | return (r_type == elfcpp::R_POWERPC_PLT16_LO | |
1789 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
1790 | || r_type == elfcpp::R_POWERPC_PLT16_HA | |
1791 | || (size == 64 && r_type == elfcpp::R_PPC64_PLT16_LO_DS)); | |
1792 | } | |
1793 | ||
dd93cd0a AM |
1794 | // If INSN is an opcode that may be used with an @tls operand, return |
1795 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1796 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1797 | uint32_t | |
1798 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1799 | { | |
1800 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1801 | return 0; | |
1802 | ||
1803 | unsigned int rtra; | |
1804 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1805 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1806 | else if (((insn >> 16) & 0x1f) == reg) | |
1807 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1808 | else | |
1809 | return 0; | |
1810 | ||
1811 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1812 | // add -> addi | |
1813 | insn = 14 << 26; | |
1814 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1815 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1816 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1817 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1818 | // load and store indexed -> dform | |
1819 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1820 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1821 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1822 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1823 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1824 | // lwax -> lwa | |
1825 | insn = (58 << 26) | 2; | |
1826 | else | |
1827 | return 0; | |
1828 | insn |= rtra; | |
1829 | return insn; | |
1830 | } | |
1831 | ||
dd93cd0a | 1832 | |
42cacb20 DE |
1833 | template<int size, bool big_endian> |
1834 | class Powerpc_relocate_functions | |
1835 | { | |
dd93cd0a | 1836 | public: |
f4baf0d4 | 1837 | enum Overflow_check |
dd93cd0a | 1838 | { |
f4baf0d4 AM |
1839 | CHECK_NONE, |
1840 | CHECK_SIGNED, | |
b80eed39 AM |
1841 | CHECK_UNSIGNED, |
1842 | CHECK_BITFIELD, | |
1843 | CHECK_LOW_INSN, | |
1844 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1845 | }; |
1846 | ||
f4baf0d4 | 1847 | enum Status |
dd93cd0a | 1848 | { |
f4baf0d4 AM |
1849 | STATUS_OK, |
1850 | STATUS_OVERFLOW | |
1851 | }; | |
dd93cd0a | 1852 | |
42cacb20 | 1853 | private: |
c9269dff | 1854 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1855 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1856 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1857 | |
dd93cd0a AM |
1858 | template<int valsize> |
1859 | static inline bool | |
1860 | has_overflow_signed(Address value) | |
1861 | { | |
1862 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1863 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1864 | limit <<= ((valsize - 1) >> 1); | |
1865 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1866 | return value + limit > (limit << 1) - 1; | |
1867 | } | |
1868 | ||
1869 | template<int valsize> | |
1870 | static inline bool | |
b80eed39 | 1871 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1872 | { |
1873 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1874 | limit <<= ((valsize - 1) >> 1); | |
1875 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1876 | return value > (limit << 1) - 1; |
1877 | } | |
1878 | ||
1879 | template<int valsize> | |
1880 | static inline bool | |
1881 | has_overflow_bitfield(Address value) | |
1882 | { | |
1883 | return (has_overflow_unsigned<valsize>(value) | |
1884 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1885 | } |
1886 | ||
1887 | template<int valsize> | |
f4baf0d4 AM |
1888 | static inline Status |
1889 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1890 | { |
f4baf0d4 | 1891 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1892 | { |
1893 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1894 | return STATUS_OVERFLOW; |
dd93cd0a | 1895 | } |
b80eed39 AM |
1896 | else if (overflow == CHECK_UNSIGNED) |
1897 | { | |
1898 | if (has_overflow_unsigned<valsize>(value)) | |
1899 | return STATUS_OVERFLOW; | |
1900 | } | |
f4baf0d4 | 1901 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1902 | { |
1903 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1904 | return STATUS_OVERFLOW; |
dd93cd0a | 1905 | } |
f4baf0d4 | 1906 | return STATUS_OK; |
dd93cd0a AM |
1907 | } |
1908 | ||
cf43a2fe | 1909 | // Do a simple RELA relocation |
0cfb0717 | 1910 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1911 | static inline Status |
1912 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1913 | { |
0cfb0717 | 1914 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1915 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1916 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1917 | return overflowed<valsize>(value, overflow); |
1918 | } | |
1919 | ||
0cfb0717 | 1920 | template<int fieldsize, int valsize> |
f4baf0d4 | 1921 | static inline Status |
42cacb20 DE |
1922 | rela(unsigned char* view, |
1923 | unsigned int right_shift, | |
0cfb0717 | 1924 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1925 | Address value, |
f4baf0d4 | 1926 | Overflow_check overflow) |
42cacb20 | 1927 | { |
0cfb0717 | 1928 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1929 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1930 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1931 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1932 | val &= ~dst_mask; |
1933 | reloc &= dst_mask; | |
0cfb0717 | 1934 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1935 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1936 | } |
1937 | ||
cf43a2fe | 1938 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1939 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1940 | static inline Status |
1941 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1942 | { |
0cfb0717 | 1943 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1944 | return overflowed<valsize>(value, overflow); |
1945 | } | |
1946 | ||
0cfb0717 | 1947 | template<int fieldsize, int valsize> |
f4baf0d4 | 1948 | static inline Status |
cf43a2fe AM |
1949 | rela_ua(unsigned char* view, |
1950 | unsigned int right_shift, | |
0cfb0717 | 1951 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1952 | Address value, |
f4baf0d4 | 1953 | Overflow_check overflow) |
42cacb20 | 1954 | { |
0cfb0717 | 1955 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1956 | Valtype; |
0cfb0717 | 1957 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1958 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1959 | val &= ~dst_mask; |
1960 | reloc &= dst_mask; | |
0cfb0717 | 1961 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1962 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1963 | } |
1964 | ||
42cacb20 | 1965 | public: |
dd93cd0a | 1966 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1967 | static inline void |
dd93cd0a | 1968 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1969 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1970 | |
dd93cd0a | 1971 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1972 | static inline void |
dd93cd0a | 1973 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1974 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1975 | |
1976 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1977 | static inline Status |
1978 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1979 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1980 | |
1981 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1982 | static inline Status |
1983 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1984 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1985 | |
1986 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1987 | static inline Status |
1988 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1989 | { |
0cfb0717 AM |
1990 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1991 | value, overflow); | |
f4baf0d4 AM |
1992 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1993 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1994 | return stat; |
1995 | } | |
42cacb20 DE |
1996 | |
1997 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1998 | static inline Status |
1999 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2000 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 2001 | |
dd93cd0a | 2002 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
2003 | static inline Status |
2004 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2005 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 2006 | |
dd93cd0a | 2007 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
2008 | static inline Status |
2009 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2010 | { |
0cfb0717 | 2011 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 2012 | if ((value & 3) != 0) |
f4baf0d4 | 2013 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
2014 | return stat; |
2015 | } | |
42cacb20 | 2016 | |
a680de9a PB |
2017 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
2018 | static inline Status | |
2019 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
2020 | { | |
2021 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
2022 | if ((value & 15) != 0) | |
2023 | stat = STATUS_OVERFLOW; | |
2024 | return stat; | |
2025 | } | |
2026 | ||
42cacb20 DE |
2027 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
2028 | static inline void | |
dd93cd0a | 2029 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 2030 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2031 | |
c9269dff | 2032 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 2033 | static inline void |
dd93cd0a AM |
2034 | addr16_ha(unsigned char* view, Address value) |
2035 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 2036 | |
dd93cd0a | 2037 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 2038 | static inline void |
dd93cd0a | 2039 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 2040 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2041 | |
dd93cd0a | 2042 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 2043 | static inline void |
dd93cd0a AM |
2044 | addr16_ha2(unsigned char* view, Address value) |
2045 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 2046 | |
dd93cd0a | 2047 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 2048 | static inline void |
dd93cd0a | 2049 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 2050 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2051 | |
dd93cd0a | 2052 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 2053 | static inline void |
dd93cd0a AM |
2054 | addr16_ha3(unsigned char* view, Address value) |
2055 | { This::addr16_hi3(view, value + 0x8000); } | |
2056 | ||
2057 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
2058 | static inline Status |
2059 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2060 | { |
0cfb0717 | 2061 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
2062 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2063 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2064 | return stat; |
2065 | } | |
a680de9a PB |
2066 | |
2067 | // R_POWERPC_REL16DX_HA | |
2068 | static inline Status | |
2069 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
2070 | { | |
2071 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
2072 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
2073 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
2074 | value += 0x8000; | |
2075 | value = static_cast<SignedAddress>(value) >> 16; | |
2076 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2077 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
2078 | return overflowed<16>(value, overflow); | |
2079 | } | |
cf43a2fe AM |
2080 | }; |
2081 | ||
b4f7960d AM |
2082 | // Set ABI version for input and output. |
2083 | ||
2084 | template<int size, bool big_endian> | |
2085 | void | |
2086 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
2087 | { | |
2088 | this->e_flags_ |= ver; | |
2089 | if (this->abiversion() != 0) | |
2090 | { | |
2091 | Target_powerpc<size, big_endian>* target = | |
2092 | static_cast<Target_powerpc<size, big_endian>*>( | |
2093 | parameters->sized_target<size, big_endian>()); | |
2094 | if (target->abiversion() == 0) | |
2095 | target->set_abiversion(this->abiversion()); | |
2096 | else if (target->abiversion() != this->abiversion()) | |
2097 | gold_error(_("%s: ABI version %d is not compatible " | |
2098 | "with ABI version %d output"), | |
2099 | this->name().c_str(), | |
2100 | this->abiversion(), target->abiversion()); | |
2101 | ||
2102 | } | |
2103 | } | |
2104 | ||
5edad15d AM |
2105 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
2106 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
2107 | |
2108 | template<int size, bool big_endian> | |
2109 | bool | |
2110 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
2111 | Read_symbols_data* sd) | |
2112 | { | |
c9269dff AM |
2113 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2114 | const unsigned char* namesu = sd->section_names->data(); | |
2115 | const char* names = reinterpret_cast<const char*>(namesu); | |
2116 | section_size_type names_size = sd->section_names_size; | |
2117 | const unsigned char* s; | |
2118 | ||
dc3714f3 AM |
2119 | s = this->template find_shdr<size, big_endian>(pshdrs, |
2120 | size == 32 ? ".got2" : ".opd", | |
2121 | names, names_size, NULL); | |
c9269dff AM |
2122 | if (s != NULL) |
2123 | { | |
2124 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2125 | this->special_ = ndx; | |
b4f7960d AM |
2126 | if (size == 64) |
2127 | { | |
2128 | if (this->abiversion() == 0) | |
2129 | this->set_abiversion(1); | |
2130 | else if (this->abiversion() > 1) | |
2131 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2132 | this->name().c_str(), this->abiversion()); | |
2133 | } | |
c9269dff | 2134 | } |
5edad15d AM |
2135 | if (size == 64) |
2136 | { | |
2137 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2138 | names, names_size, NULL); | |
2139 | if (s != NULL) | |
2140 | { | |
2141 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2142 | this->relatoc_ = ndx; | |
2143 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2144 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2145 | } | |
2146 | } | |
c9269dff AM |
2147 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2148 | } | |
2149 | ||
2150 | // Examine .rela.opd to build info about function entry points. | |
2151 | ||
2152 | template<int size, bool big_endian> | |
2153 | void | |
2154 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2155 | size_t reloc_count, | |
2156 | const unsigned char* prelocs, | |
2157 | const unsigned char* plocal_syms) | |
2158 | { | |
2159 | if (size == 64) | |
cf43a2fe | 2160 | { |
0e123f69 AM |
2161 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2162 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2163 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2164 | Address expected_off = 0; |
2165 | bool regular = true; | |
2166 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2167 | |
2168 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2169 | { |
c9269dff AM |
2170 | Reltype reloc(prelocs); |
2171 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2172 | = reloc.get_r_info(); | |
2173 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2174 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2175 | { | |
2176 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2177 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2178 | bool is_ordinary; | |
2179 | unsigned int shndx; | |
2180 | if (r_sym < this->local_symbol_count()) | |
2181 | { | |
2182 | typename elfcpp::Sym<size, big_endian> | |
2183 | lsym(plocal_syms + r_sym * sym_size); | |
2184 | shndx = lsym.get_st_shndx(); | |
2185 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2186 | value = lsym.get_st_value(); | |
2187 | } | |
2188 | else | |
2189 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2190 | &is_ordinary); | |
2191 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2192 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2193 | if (i == 2) |
2194 | { | |
2195 | expected_off = reloc.get_r_offset(); | |
2196 | opd_ent_size = expected_off; | |
2197 | } | |
2198 | else if (expected_off != reloc.get_r_offset()) | |
2199 | regular = false; | |
2200 | expected_off += opd_ent_size; | |
2201 | } | |
2202 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2203 | { | |
2204 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2205 | regular = false; | |
2206 | } | |
2207 | else | |
2208 | { | |
2209 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2210 | this->name().c_str(), r_type); | |
2211 | regular = false; | |
c9269dff AM |
2212 | } |
2213 | } | |
ec4dbad3 AM |
2214 | if (reloc_count <= 2) |
2215 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2216 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2217 | regular = false; | |
2218 | if (!regular) | |
2219 | { | |
2220 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2221 | this->name().c_str()); | |
2222 | opd_ent_size = 0; | |
2223 | } | |
c9269dff AM |
2224 | } |
2225 | } | |
2226 | ||
5edad15d AM |
2227 | // Returns true if a code sequence loading the TOC entry at VALUE |
2228 | // relative to the TOC pointer can be converted into code calculating | |
2229 | // a TOC pointer relative offset. | |
2230 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2231 | ||
2232 | template<int size, bool big_endian> | |
2233 | bool | |
2234 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2235 | Target_powerpc<size, big_endian>* target, | |
2236 | Address* value) | |
2237 | { | |
2238 | if (size != 64) | |
2239 | return false; | |
2240 | ||
e666304e AM |
2241 | // With -mcmodel=medium code it is quite possible to have |
2242 | // toc-relative relocs referring to objects outside the TOC. | |
2243 | // Don't try to look at a non-existent TOC. | |
2244 | if (this->toc_shndx() == 0) | |
2245 | return false; | |
2246 | ||
5edad15d AM |
2247 | // Convert VALUE back to an address by adding got_base (see below), |
2248 | // then to an offset in the TOC by subtracting the TOC output | |
2249 | // section address and the TOC output offset. Since this TOC output | |
2250 | // section and the got output section are one and the same, we can | |
2251 | // omit adding and subtracting the output section address. | |
2252 | Address off = (*value + this->toc_base_offset() | |
2253 | - this->output_section_offset(this->toc_shndx())); | |
2254 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2255 | // TOC relative access to variables outside the TOC. Those of | |
2256 | // course can't be optimized. We also don't try to optimize code | |
2257 | // that is using a different object's TOC. | |
2258 | if (off >= this->section_size(this->toc_shndx())) | |
2259 | return false; | |
2260 | ||
2261 | if (this->no_toc_opt(off)) | |
2262 | return false; | |
2263 | ||
2264 | section_size_type vlen; | |
2265 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2266 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2267 | // The TOC pointer | |
2268 | Address got_base = (target->got_section()->output_section()->address() | |
2269 | + this->toc_base_offset()); | |
2270 | addr -= got_base; | |
857e829e | 2271 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2272 | return false; |
2273 | ||
2274 | *value = addr; | |
2275 | return true; | |
2276 | } | |
2277 | ||
2278 | // Perform the Sized_relobj_file method, then set up opd info from | |
2279 | // .opd relocs. | |
2280 | ||
c9269dff AM |
2281 | template<int size, bool big_endian> |
2282 | void | |
2283 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2284 | { | |
2285 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2286 | if (size == 64) | |
2287 | { | |
2288 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2289 | p != rd->relocs.end(); | |
2290 | ++p) | |
2291 | { | |
2292 | if (p->data_shndx == this->opd_shndx()) | |
2293 | { | |
ec4dbad3 AM |
2294 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2295 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2296 | if (opd_size != 0) | |
2297 | { | |
2298 | this->init_opd(opd_size); | |
2299 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2300 | rd->local_symbols->data()); | |
2301 | } | |
c9269dff AM |
2302 | break; |
2303 | } | |
cf43a2fe AM |
2304 | } |
2305 | } | |
cf43a2fe AM |
2306 | } |
2307 | ||
b4f7960d AM |
2308 | // Read the symbols then set up st_other vector. |
2309 | ||
2310 | template<int size, bool big_endian> | |
2311 | void | |
2312 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2313 | { | |
f35c4853 | 2314 | this->base_read_symbols(sd); |
b4f7960d AM |
2315 | if (size == 64) |
2316 | { | |
2317 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2318 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2319 | const unsigned int loccount = this->do_local_symbol_count(); | |
2320 | if (loccount != 0) | |
2321 | { | |
2322 | this->st_other_.resize(loccount); | |
2323 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2324 | off_t locsize = loccount * sym_size; | |
2325 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2326 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2327 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2328 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2329 | locsize, true, false); | |
2330 | psyms += sym_size; | |
2331 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2332 | { | |
2333 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2334 | unsigned char st_other = sym.get_st_other(); | |
2335 | this->st_other_[i] = st_other; | |
2336 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2337 | { | |
2338 | if (this->abiversion() == 0) | |
2339 | this->set_abiversion(2); | |
2340 | else if (this->abiversion() < 2) | |
2341 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2342 | " for ABI version 1"), | |
2343 | this->name().c_str(), i); | |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | template<int size, bool big_endian> | |
2351 | void | |
2352 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2353 | { | |
2354 | this->e_flags_ |= ver; | |
2355 | if (this->abiversion() != 0) | |
2356 | { | |
2357 | Target_powerpc<size, big_endian>* target = | |
2358 | static_cast<Target_powerpc<size, big_endian>*>( | |
2359 | parameters->sized_target<size, big_endian>()); | |
2360 | if (target->abiversion() == 0) | |
2361 | target->set_abiversion(this->abiversion()); | |
2362 | else if (target->abiversion() != this->abiversion()) | |
2363 | gold_error(_("%s: ABI version %d is not compatible " | |
2364 | "with ABI version %d output"), | |
2365 | this->name().c_str(), | |
2366 | this->abiversion(), target->abiversion()); | |
2367 | ||
2368 | } | |
2369 | } | |
2370 | ||
f35c4853 | 2371 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2372 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2373 | ||
2374 | template<int size, bool big_endian> | |
2375 | void | |
2376 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2377 | { | |
f35c4853 | 2378 | this->base_read_symbols(sd); |
dc3714f3 AM |
2379 | if (size == 64) |
2380 | { | |
2381 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2382 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2383 | const unsigned char* namesu = sd->section_names->data(); | |
2384 | const char* names = reinterpret_cast<const char*>(namesu); | |
2385 | const unsigned char* s = NULL; | |
2386 | const unsigned char* opd; | |
2387 | section_size_type opd_size; | |
2388 | ||
2389 | // Find and read .opd section. | |
2390 | while (1) | |
2391 | { | |
2392 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2393 | sd->section_names_size, | |
2394 | s); | |
2395 | if (s == NULL) | |
2396 | return; | |
2397 | ||
2398 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2399 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2400 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2401 | { | |
b4f7960d AM |
2402 | if (this->abiversion() == 0) |
2403 | this->set_abiversion(1); | |
2404 | else if (this->abiversion() > 1) | |
2405 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2406 | this->name().c_str(), this->abiversion()); | |
2407 | ||
dc3714f3 AM |
2408 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2409 | this->opd_address_ = shdr.get_sh_addr(); | |
2410 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2411 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2412 | true, false); | |
2413 | break; | |
2414 | } | |
2415 | } | |
2416 | ||
2417 | // Build set of executable sections. | |
2418 | // Using a set is probably overkill. There is likely to be only | |
2419 | // a few executable sections, typically .init, .text and .fini, | |
2420 | // and they are generally grouped together. | |
2421 | typedef std::set<Sec_info> Exec_sections; | |
2422 | Exec_sections exec_sections; | |
2423 | s = pshdrs; | |
2424 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2425 | { | |
2426 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2427 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2428 | && ((shdr.get_sh_flags() | |
2429 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2430 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2431 | && shdr.get_sh_size() != 0) | |
2432 | { | |
2433 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2434 | shdr.get_sh_size(), i)); | |
2435 | } | |
2436 | } | |
2437 | if (exec_sections.empty()) | |
2438 | return; | |
2439 | ||
2440 | // Look over the OPD entries. This is complicated by the fact | |
2441 | // that some binaries will use two-word entries while others | |
2442 | // will use the standard three-word entries. In most cases | |
2443 | // the third word (the environment pointer for languages like | |
2444 | // Pascal) is unused and will be zero. If the third word is | |
2445 | // used it should not be pointing into executable sections, | |
2446 | // I think. | |
2447 | this->init_opd(opd_size); | |
2448 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2449 | { | |
2450 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2451 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2452 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2453 | if (val == 0) | |
2454 | // Chances are that this is the third word of an OPD entry. | |
2455 | continue; | |
2456 | typename Exec_sections::const_iterator e | |
2457 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2458 | if (e != exec_sections.begin()) | |
2459 | { | |
2460 | --e; | |
2461 | if (e->start <= val && val < e->start + e->len) | |
2462 | { | |
2463 | // We have an address in an executable section. | |
2464 | // VAL ought to be the function entry, set it up. | |
2465 | this->set_opd_ent(p - opd, e->shndx, val); | |
2466 | // Skip second word of OPD entry, the TOC pointer. | |
2467 | p += 8; | |
2468 | } | |
2469 | } | |
2470 | // If we didn't match any executable sections, we likely | |
2471 | // have a non-zero third word in the OPD entry. | |
2472 | } | |
2473 | } | |
2474 | } | |
2475 | ||
5edad15d AM |
2476 | // Relocate sections. |
2477 | ||
2478 | template<int size, bool big_endian> | |
2479 | void | |
2480 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2481 | const Symbol_table* symtab, const Layout* layout, | |
2482 | const unsigned char* pshdrs, Output_file* of, | |
2483 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2484 | { | |
2485 | unsigned int start = 1; | |
2486 | if (size == 64 | |
2487 | && this->relatoc_ != 0 | |
2488 | && !parameters->options().relocatable()) | |
2489 | { | |
2490 | // Relocate .toc first. | |
2491 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2492 | this->relatoc_, this->relatoc_); | |
2493 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2494 | 1, this->relatoc_ - 1); | |
2495 | start = this->relatoc_ + 1; | |
2496 | } | |
2497 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2498 | start, this->shnum() - 1); | |
2d7ad24e AM |
2499 | |
2500 | if (!parameters->options().output_is_position_independent()) | |
2501 | { | |
2502 | Target_powerpc<size, big_endian>* target | |
2503 | = static_cast<Target_powerpc<size, big_endian>*>( | |
2504 | parameters->sized_target<size, big_endian>()); | |
2505 | if (target->lplt_section() && target->lplt_section()->data_size() != 0) | |
2506 | { | |
2507 | const section_size_type offset = target->lplt_section()->offset(); | |
2508 | const section_size_type oview_size | |
2509 | = convert_to_section_size_type(target->lplt_section()->data_size()); | |
2510 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
2511 | ||
2512 | bool modified = false; | |
2513 | unsigned int nsyms = this->local_symbol_count(); | |
2514 | for (unsigned int i = 0; i < nsyms; i++) | |
2515 | if (this->local_has_plt_offset(i)) | |
2516 | { | |
2517 | Address value = this->local_symbol_value(i, 0); | |
2518 | if (size == 64) | |
2519 | value += ppc64_local_entry_offset(i); | |
2520 | size_t off = this->local_plt_offset(i); | |
2521 | elfcpp::Swap<size, big_endian>::writeval(oview + off, value); | |
2522 | modified = true; | |
2523 | } | |
2524 | if (modified) | |
2525 | of->write_output_view(offset, oview_size, oview); | |
2526 | } | |
2527 | } | |
5edad15d AM |
2528 | } |
2529 | ||
f43ba157 | 2530 | // Set up some symbols. |
26a4e9cb AM |
2531 | |
2532 | template<int size, bool big_endian> | |
2533 | void | |
f43ba157 AM |
2534 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2535 | Symbol_table* symtab, | |
2536 | Layout* layout) | |
26a4e9cb AM |
2537 | { |
2538 | if (size == 32) | |
2539 | { | |
bb66a627 AM |
2540 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2541 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2542 | // non-relative dynamic relocs). The proper value will be |
2543 | // updated later. | |
2544 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2545 | if (gotsym != NULL && gotsym->is_undefined()) | |
2546 | { | |
2547 | Target_powerpc<size, big_endian>* target = | |
2548 | static_cast<Target_powerpc<size, big_endian>*>( | |
2549 | parameters->sized_target<size, big_endian>()); | |
2550 | Output_data_got_powerpc<size, big_endian>* got | |
2551 | = target->got_section(symtab, layout); | |
2552 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2553 | Symbol_table::PREDEFINED, | |
2554 | got, 0, 0, | |
2555 | elfcpp::STT_OBJECT, | |
bb66a627 | 2556 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2557 | elfcpp::STV_HIDDEN, 0, |
2558 | false, false); | |
2559 | } | |
2560 | ||
2561 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2562 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2563 | if (sdasym != NULL && sdasym->is_undefined()) | |
2564 | { | |
2565 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2566 | Output_section* os | |
2567 | = layout->add_output_section_data(".sdata", 0, | |
2568 | elfcpp::SHF_ALLOC | |
2569 | | elfcpp::SHF_WRITE, | |
2570 | sdata, ORDER_SMALL_DATA, false); | |
2571 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2572 | Symbol_table::PREDEFINED, | |
2573 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2574 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2575 | 0, false, false); | |
2576 | } | |
2577 | } | |
b4f7960d AM |
2578 | else |
2579 | { | |
2580 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2581 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2582 | if (gotsym != NULL && gotsym->is_undefined()) | |
2583 | { | |
2584 | Target_powerpc<size, big_endian>* target = | |
2585 | static_cast<Target_powerpc<size, big_endian>*>( | |
2586 | parameters->sized_target<size, big_endian>()); | |
2587 | Output_data_got_powerpc<size, big_endian>* got | |
2588 | = target->got_section(symtab, layout); | |
2589 | symtab->define_in_output_data(".TOC.", NULL, | |
2590 | Symbol_table::PREDEFINED, | |
2591 | got, 0x8000, 0, | |
2592 | elfcpp::STT_OBJECT, | |
2593 | elfcpp::STB_LOCAL, | |
2594 | elfcpp::STV_HIDDEN, 0, | |
2595 | false, false); | |
2596 | } | |
2597 | } | |
34e0882b AM |
2598 | |
2599 | this->tls_get_addr_ = symtab->lookup("__tls_get_addr"); | |
2600 | if (parameters->options().tls_get_addr_optimize() | |
2601 | && this->tls_get_addr_ != NULL | |
2602 | && this->tls_get_addr_->in_reg()) | |
2603 | this->tls_get_addr_opt_ = symtab->lookup("__tls_get_addr_opt"); | |
2604 | if (this->tls_get_addr_opt_ != NULL) | |
2605 | { | |
2606 | if (this->tls_get_addr_->is_undefined() | |
2607 | || this->tls_get_addr_->is_from_dynobj()) | |
2608 | { | |
2609 | // Make it seem as if references to __tls_get_addr are | |
2610 | // really to __tls_get_addr_opt, so the latter symbol is | |
2611 | // made dynamic, not the former. | |
2612 | this->tls_get_addr_->clear_in_reg(); | |
2613 | this->tls_get_addr_opt_->set_in_reg(); | |
2614 | } | |
2615 | // We have a non-dynamic definition for __tls_get_addr. | |
2616 | // Make __tls_get_addr_opt the same, if it does not already have | |
2617 | // a non-dynamic definition. | |
2618 | else if (this->tls_get_addr_opt_->is_undefined() | |
2619 | || this->tls_get_addr_opt_->is_from_dynobj()) | |
2620 | { | |
2621 | Sized_symbol<size>* from | |
2622 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_); | |
2623 | Sized_symbol<size>* to | |
2624 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_opt_); | |
2625 | symtab->clone<size>(to, from); | |
2626 | } | |
2627 | } | |
26a4e9cb AM |
2628 | } |
2629 | ||
cf43a2fe AM |
2630 | // Set up PowerPC target specific relobj. |
2631 | ||
2632 | template<int size, bool big_endian> | |
2633 | Object* | |
2634 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2635 | const std::string& name, | |
2636 | Input_file* input_file, | |
2637 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2638 | { | |
2639 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2640 | // ET_EXEC files are valid input for --just-symbols/-R, |
2641 | // and we treat them as relocatable objects. | |
2642 | if (et == elfcpp::ET_REL | |
2643 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2644 | { |
2645 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2646 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2647 | obj->setup(); |
2648 | return obj; | |
2649 | } | |
2650 | else if (et == elfcpp::ET_DYN) | |
2651 | { | |
dc3714f3 AM |
2652 | Powerpc_dynobj<size, big_endian>* obj = |
2653 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2654 | obj->setup(); |
2655 | return obj; | |
2656 | } | |
2657 | else | |
2658 | { | |
c9269dff | 2659 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2660 | return NULL; |
2661 | } | |
2662 | } | |
2663 | ||
2664 | template<int size, bool big_endian> | |
2665 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2666 | { | |
2667 | public: | |
2668 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2669 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2670 | ||
2671 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2672 | : Output_data_got<size, big_endian>(), | |
2673 | symtab_(symtab), layout_(layout), | |
2674 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2675 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2676 | { |
2677 | if (size == 64) | |
2678 | this->set_addralign(256); | |
2679 | } | |
cf43a2fe | 2680 | |
e84fe78f AM |
2681 | // Override all the Output_data_got methods we use so as to first call |
2682 | // reserve_ent(). | |
2683 | bool | |
2684 | add_global(Symbol* gsym, unsigned int got_type) | |
2685 | { | |
2686 | this->reserve_ent(); | |
2687 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2688 | } | |
2689 | ||
2690 | bool | |
2691 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2692 | { | |
2693 | this->reserve_ent(); | |
2694 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2695 | } | |
2696 | ||
2697 | bool | |
2698 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2699 | { return this->add_global_plt(gsym, got_type); } | |
2700 | ||
2701 | void | |
2702 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2703 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2704 | { | |
2705 | this->reserve_ent(); | |
2706 | Output_data_got<size, big_endian>:: | |
2707 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2708 | } | |
2709 | ||
2710 | void | |
2711 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2712 | Output_data_reloc_generic* rel_dyn, | |
2713 | unsigned int r_type_1, unsigned int r_type_2) | |
2714 | { | |
aacb3b6d AM |
2715 | if (gsym->has_got_offset(got_type)) |
2716 | return; | |
2717 | ||
e84fe78f AM |
2718 | this->reserve_ent(2); |
2719 | Output_data_got<size, big_endian>:: | |
2720 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2721 | } | |
2722 | ||
2723 | bool | |
2724 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2725 | { | |
2726 | this->reserve_ent(); | |
2727 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2728 | got_type); | |
2729 | } | |
2730 | ||
2731 | bool | |
2732 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2733 | { | |
2734 | this->reserve_ent(); | |
2735 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2736 | got_type); | |
2737 | } | |
2738 | ||
2739 | bool | |
2740 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2741 | { return this->add_local_plt(object, sym_index, got_type); } | |
2742 | ||
2743 | void | |
2744 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2745 | unsigned int got_type, | |
2746 | Output_data_reloc_generic* rel_dyn, | |
2747 | unsigned int r_type) | |
2748 | { | |
aacb3b6d AM |
2749 | if (object->local_has_got_offset(sym_index, got_type)) |
2750 | return; | |
2751 | ||
e84fe78f AM |
2752 | this->reserve_ent(2); |
2753 | Output_data_got<size, big_endian>:: | |
2754 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2755 | } | |
2756 | ||
2757 | unsigned int | |
2758 | add_constant(Valtype constant) | |
2759 | { | |
2760 | this->reserve_ent(); | |
2761 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2762 | } | |
2763 | ||
dd93cd0a AM |
2764 | unsigned int |
2765 | add_constant_pair(Valtype c1, Valtype c2) | |
2766 | { | |
2767 | this->reserve_ent(2); | |
e84fe78f | 2768 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2769 | } |
2770 | ||
2771 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2772 | unsigned int |
2773 | g_o_t() const | |
2774 | { | |
2775 | return this->got_offset(this->header_index_); | |
42cacb20 | 2776 | } |
cf43a2fe | 2777 | |
dd93cd0a AM |
2778 | // Offset of base used to access the GOT/TOC. |
2779 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2780 | Valtype |
dd93cd0a AM |
2781 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2782 | { | |
2783 | if (size == 32) | |
2784 | return this->g_o_t(); | |
2785 | else | |
2786 | return (this->output_section()->address() | |
2787 | + object->toc_base_offset() | |
2788 | - this->address()); | |
2789 | } | |
2790 | ||
cf43a2fe AM |
2791 | // Ensure our GOT has a header. |
2792 | void | |
2793 | set_final_data_size() | |
2794 | { | |
2795 | if (this->header_ent_cnt_ != 0) | |
2796 | this->make_header(); | |
2797 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2798 | } | |
2799 | ||
2800 | // First word of GOT header needs some values that are not | |
2801 | // handled by Output_data_got so poke them in here. | |
2802 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2803 | void | |
2804 | do_write(Output_file* of) | |
2805 | { | |
c9824451 AM |
2806 | Valtype val = 0; |
2807 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2808 | val = this->layout_->dynamic_section()->address(); | |
2809 | if (size == 64) | |
2810 | val = this->output_section()->address() + 0x8000; | |
2811 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2812 | Output_data_got<size, big_endian>::do_write(of); |
2813 | } | |
2814 | ||
2815 | private: | |
2816 | void | |
2817 | reserve_ent(unsigned int cnt = 1) | |
2818 | { | |
2819 | if (this->header_ent_cnt_ == 0) | |
2820 | return; | |
2821 | if (this->num_entries() + cnt > this->header_index_) | |
2822 | this->make_header(); | |
2823 | } | |
2824 | ||
2825 | void | |
2826 | make_header() | |
2827 | { | |
2828 | this->header_ent_cnt_ = 0; | |
2829 | this->header_index_ = this->num_entries(); | |
2830 | if (size == 32) | |
2831 | { | |
2832 | Output_data_got<size, big_endian>::add_constant(0); | |
2833 | Output_data_got<size, big_endian>::add_constant(0); | |
2834 | Output_data_got<size, big_endian>::add_constant(0); | |
2835 | ||
2836 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2837 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2838 | if (gotsym != NULL) | |
2839 | { | |
2840 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2841 | sym->set_value(this->g_o_t()); | |
2842 | } | |
2843 | else | |
2844 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2845 | Symbol_table::PREDEFINED, | |
2846 | this, this->g_o_t(), 0, | |
2847 | elfcpp::STT_OBJECT, | |
2848 | elfcpp::STB_LOCAL, | |
2849 | elfcpp::STV_HIDDEN, 0, | |
2850 | false, false); | |
cf43a2fe AM |
2851 | } |
2852 | else | |
2853 | Output_data_got<size, big_endian>::add_constant(0); | |
2854 | } | |
2855 | ||
2856 | // Stashed pointers. | |
2857 | Symbol_table* symtab_; | |
2858 | Layout* layout_; | |
2859 | ||
2860 | // GOT header size. | |
2861 | unsigned int header_ent_cnt_; | |
2862 | // GOT header index. | |
2863 | unsigned int header_index_; | |
42cacb20 DE |
2864 | }; |
2865 | ||
2866 | // Get the GOT section, creating it if necessary. | |
2867 | ||
2868 | template<int size, bool big_endian> | |
cf43a2fe | 2869 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2870 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2871 | Layout* layout) | |
2872 | { | |
2873 | if (this->got_ == NULL) | |
2874 | { | |
2875 | gold_assert(symtab != NULL && layout != NULL); | |
2876 | ||
cf43a2fe AM |
2877 | this->got_ |
2878 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2879 | |
2880 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2881 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2882 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2883 | } |
2884 | ||
2885 | return this->got_; | |
2886 | } | |
2887 | ||
2888 | // Get the dynamic reloc section, creating it if necessary. | |
2889 | ||
2890 | template<int size, bool big_endian> | |
2891 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2892 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2893 | { | |
2894 | if (this->rela_dyn_ == NULL) | |
2895 | { | |
2896 | gold_assert(layout != NULL); | |
2897 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2898 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2899 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2900 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2901 | } |
2902 | return this->rela_dyn_; | |
2903 | } | |
2904 | ||
b3ccdeb5 AM |
2905 | // Similarly, but for ifunc symbols get the one for ifunc. |
2906 | ||
2907 | template<int size, bool big_endian> | |
2908 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2909 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2910 | Layout* layout, | |
2911 | bool for_ifunc) | |
2912 | { | |
2913 | if (!for_ifunc) | |
2914 | return this->rela_dyn_section(layout); | |
2915 | ||
2916 | if (this->iplt_ == NULL) | |
2917 | this->make_iplt_section(symtab, layout); | |
2918 | return this->iplt_->rel_plt(); | |
2919 | } | |
2920 | ||
ec661b9d AM |
2921 | class Stub_control |
2922 | { | |
2923 | public: | |
2924 | // Determine the stub group size. The group size is the absolute | |
2925 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 2926 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 2927 | // the stubbed branches. |
1c3a5fbe AM |
2928 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
2929 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
2930 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
2931 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
2932 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 2933 | { |
ec661b9d AM |
2934 | } |
2935 | ||
2936 | // Return true iff input section can be handled by current stub | |
2937 | // group. | |
2938 | bool | |
2939 | can_add_to_stub_group(Output_section* o, | |
2940 | const Output_section::Input_section* i, | |
2941 | bool has14); | |
2942 | ||
2943 | const Output_section::Input_section* | |
2944 | owner() | |
2945 | { return owner_; } | |
2946 | ||
2947 | Output_section* | |
2948 | output_section() | |
2949 | { return output_section_; } | |
2950 | ||
a20605cf AM |
2951 | void |
2952 | set_output_and_owner(Output_section* o, | |
2953 | const Output_section::Input_section* i) | |
2954 | { | |
2955 | this->output_section_ = o; | |
2956 | this->owner_ = i; | |
2957 | } | |
2958 | ||
ec661b9d AM |
2959 | private: |
2960 | typedef enum | |
2961 | { | |
1c3a5fbe | 2962 | // Initial state. |
ec661b9d | 2963 | NO_GROUP, |
1c3a5fbe | 2964 | // Adding group sections before the stubs. |
ec661b9d | 2965 | FINDING_STUB_SECTION, |
1c3a5fbe | 2966 | // Adding group sections after the stubs. |
ec661b9d AM |
2967 | HAS_STUB_SECTION |
2968 | } State; | |
2969 | ||
ec661b9d | 2970 | uint32_t stub_group_size_; |
a5018ae5 | 2971 | bool stubs_always_after_branch_; |
ec661b9d | 2972 | bool suppress_size_errors_; |
1c3a5fbe AM |
2973 | // True if a stub group can serve multiple output sections. |
2974 | bool multi_os_; | |
2975 | State state_; | |
8a37735f AM |
2976 | // Current max size of group. Starts at stub_group_size_ but is |
2977 | // reduced to stub_group_size_/1024 on seeing a section with | |
2978 | // external conditional branches. | |
2979 | uint32_t group_size_; | |
a5018ae5 | 2980 | uint64_t group_start_addr_; |
57f6d32d AM |
2981 | // owner_ and output_section_ specify the section to which stubs are |
2982 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
2983 | const Output_section::Input_section* owner_; |
2984 | Output_section* output_section_; | |
2985 | }; | |
2986 | ||
0cfdc767 | 2987 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
2988 | // group. Sections are presented to this function in order, |
2989 | // so the first section is the head of the group. | |
ec661b9d AM |
2990 | |
2991 | bool | |
2992 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2993 | const Output_section::Input_section* i, | |
2994 | bool has14) | |
2995 | { | |
ec661b9d AM |
2996 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
2997 | uint64_t this_size; | |
2998 | uint64_t start_addr = o->address(); | |
2999 | ||
3000 | if (whole_sec) | |
3001 | // .init and .fini sections are pasted together to form a single | |
3002 | // function. We can't be adding stubs in the middle of the function. | |
3003 | this_size = o->data_size(); | |
3004 | else | |
3005 | { | |
3006 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
3007 | this_size = i->data_size(); | |
3008 | } | |
57f6d32d | 3009 | |
a5018ae5 | 3010 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
3011 | uint32_t group_size = this->stub_group_size_; |
3012 | if (has14) | |
3013 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 3014 | |
57f6d32d | 3015 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
3016 | gold_warning(_("%s:%s exceeds group size"), |
3017 | i->relobj()->name().c_str(), | |
3018 | i->relobj()->section_name(i->shndx()).c_str()); | |
3019 | ||
afe002dd AM |
3020 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
3021 | has14 ? " 14bit" : "", | |
3022 | i->relobj()->name().c_str(), | |
3023 | i->relobj()->section_name(i->shndx()).c_str(), | |
3024 | (long long) this_size, | |
a5018ae5 AM |
3025 | (this->state_ == NO_GROUP |
3026 | ? this_size | |
3027 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 3028 | |
1c3a5fbe AM |
3029 | if (this->state_ == NO_GROUP) |
3030 | { | |
3031 | // Only here on very first use of Stub_control | |
3032 | this->owner_ = i; | |
3033 | this->output_section_ = o; | |
3034 | this->state_ = FINDING_STUB_SECTION; | |
3035 | this->group_size_ = group_size; | |
3036 | this->group_start_addr_ = start_addr; | |
3037 | return true; | |
3038 | } | |
3039 | else if (!this->multi_os_ && this->output_section_ != o) | |
3040 | ; | |
3041 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 3042 | { |
a5018ae5 | 3043 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 3044 | // group? |
a5018ae5 | 3045 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 3046 | return true; |
ec661b9d | 3047 | } |
a5018ae5 | 3048 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 3049 | { |
a5018ae5 AM |
3050 | if ((whole_sec && this->output_section_ == o) |
3051 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3052 | { |
a5018ae5 | 3053 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
3054 | this->owner_ = i; |
3055 | this->output_section_ = o; | |
a5018ae5 | 3056 | return true; |
57f6d32d | 3057 | } |
a5018ae5 AM |
3058 | // The group before the stubs has reached maximum size. |
3059 | // Now see about adding sections after the stubs to the | |
3060 | // group. If the current section has a 14-bit branch and | |
3061 | // the group before the stubs exceeds group_size_ (because | |
3062 | // they didn't have 14-bit branches), don't add sections | |
3063 | // after the stubs: The size of stubs for such a large | |
3064 | // group may exceed the reach of a 14-bit branch. | |
3065 | if (!this->stubs_always_after_branch_ | |
3066 | && this_size <= this->group_size_ | |
3067 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3068 | { |
a5018ae5 AM |
3069 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
3070 | this->state_ = HAS_STUB_SECTION; | |
3071 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
3072 | return true; |
3073 | } | |
ec661b9d | 3074 | } |
a5018ae5 AM |
3075 | else |
3076 | gold_unreachable(); | |
57f6d32d | 3077 | |
1c3a5fbe AM |
3078 | gold_debug(DEBUG_TARGET, |
3079 | !this->multi_os_ && this->output_section_ != o | |
3080 | ? "nope, new output section\n" | |
3081 | : "nope, didn't fit\n"); | |
afe002dd | 3082 | |
57f6d32d AM |
3083 | // The section fails to fit in the current group. Set up a few |
3084 | // things for the next group. owner_ and output_section_ will be | |
3085 | // set later after we've retrieved those values for the current | |
3086 | // group. | |
3087 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 3088 | this->group_size_ = group_size; |
a5018ae5 | 3089 | this->group_start_addr_ = start_addr; |
57f6d32d | 3090 | return false; |
ec661b9d AM |
3091 | } |
3092 | ||
3093 | // Look over all the input sections, deciding where to place stubs. | |
3094 | ||
3095 | template<int size, bool big_endian> | |
3096 | void | |
3097 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
3098 | const Task*, |
3099 | bool no_size_errors) | |
ec661b9d | 3100 | { |
1c3a5fbe AM |
3101 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
3102 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
3103 | |
3104 | // Group input sections and insert stub table | |
a3e60ddb AM |
3105 | Stub_table_owner* table_owner = NULL; |
3106 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
3107 | Layout::Section_list section_list; |
3108 | layout->get_executable_sections(§ion_list); | |
3109 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
3110 | for (Layout::Section_list::iterator o = section_list.begin(); |
3111 | o != section_list.end(); | |
ec661b9d AM |
3112 | ++o) |
3113 | { | |
3114 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
3115 | for (Input_section_list::const_iterator i |
3116 | = (*o)->input_sections().begin(); | |
3117 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
3118 | ++i) |
3119 | { | |
a3e60ddb AM |
3120 | if (i->is_input_section() |
3121 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
3122 | { |
3123 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
3124 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
3125 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
3126 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
3127 | { | |
a3e60ddb AM |
3128 | table_owner->output_section = stub_control.output_section(); |
3129 | table_owner->owner = stub_control.owner(); | |
a20605cf | 3130 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 3131 | table_owner = NULL; |
ec661b9d | 3132 | } |
a3e60ddb AM |
3133 | if (table_owner == NULL) |
3134 | { | |
3135 | table_owner = new Stub_table_owner; | |
3136 | tables.push_back(table_owner); | |
3137 | } | |
3138 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
3139 | } |
3140 | } | |
3141 | } | |
a3e60ddb | 3142 | if (table_owner != NULL) |
0cfdc767 | 3143 | { |
a5018ae5 AM |
3144 | table_owner->output_section = stub_control.output_section(); |
3145 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
3146 | } |
3147 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
3148 | t != tables.end(); | |
3149 | ++t) | |
3150 | { | |
3151 | Stub_table<size, big_endian>* stub_table; | |
3152 | ||
3153 | if ((*t)->owner->is_input_section()) | |
3154 | stub_table = new Stub_table<size, big_endian>(this, | |
3155 | (*t)->output_section, | |
590b87ff AM |
3156 | (*t)->owner, |
3157 | this->stub_tables_.size()); | |
a3e60ddb AM |
3158 | else if ((*t)->owner->is_relaxed_input_section()) |
3159 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
3160 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 3161 | else |
a3e60ddb AM |
3162 | gold_unreachable(); |
3163 | this->stub_tables_.push_back(stub_table); | |
3164 | delete *t; | |
0cfdc767 | 3165 | } |
ec661b9d AM |
3166 | } |
3167 | ||
a3e60ddb AM |
3168 | static unsigned long |
3169 | max_branch_delta (unsigned int r_type) | |
3170 | { | |
3171 | if (r_type == elfcpp::R_POWERPC_REL14 | |
3172 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
3173 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
3174 | return 1L << 15; | |
3175 | if (r_type == elfcpp::R_POWERPC_REL24 | |
3176 | || r_type == elfcpp::R_PPC_PLTREL24 | |
3177 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
3178 | return 1L << 25; | |
3179 | return 0; | |
3180 | } | |
3181 | ||
7e57d19e AM |
3182 | // Return whether this branch is going via a plt call stub. |
3183 | ||
3184 | template<int size, bool big_endian> | |
3185 | bool | |
3186 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
3187 | Powerpc_relobj<size, big_endian>* ppc_object, | |
3188 | unsigned int shndx, | |
3189 | Address offset, | |
3190 | Target_powerpc* target, | |
3191 | Symbol_table* symtab) | |
3192 | { | |
3193 | if (this->object_ != ppc_object | |
3194 | || this->shndx_ != shndx | |
3195 | || this->offset_ != offset) | |
3196 | return false; | |
3197 | ||
3198 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3199 | if (sym != NULL && sym->is_forwarder()) | |
3200 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3201 | if (target->replace_tls_get_addr(sym)) |
3202 | sym = target->tls_get_addr_opt(); | |
7e57d19e AM |
3203 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
3204 | if (gsym != NULL | |
7ee7ff70 AM |
3205 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3206 | && !target->is_elfv2_localentry0(gsym)) | |
3207 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3208 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3209 | { |
3210 | this->tocsave_ = 1; | |
3211 | return true; | |
3212 | } | |
3213 | return false; | |
3214 | } | |
3215 | ||
ec661b9d AM |
3216 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3217 | ||
3218 | template<int size, bool big_endian> | |
a3e60ddb | 3219 | bool |
ec661b9d AM |
3220 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3221 | Stub_table<size, big_endian>* stub_table, | |
3222 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3223 | Symbol_table* symtab) const | |
3224 | { | |
3225 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
88b8e639 AM |
3226 | Target_powerpc<size, big_endian>* target = |
3227 | static_cast<Target_powerpc<size, big_endian>*>( | |
3228 | parameters->sized_target<size, big_endian>()); | |
34e0882b AM |
3229 | if (sym != NULL && sym->is_forwarder()) |
3230 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3231 | if (target->replace_tls_get_addr(sym)) |
3232 | sym = target->tls_get_addr_opt(); | |
34e0882b | 3233 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
dc60b26d AM |
3234 | bool ok = true; |
3235 | ||
ec661b9d | 3236 | if (gsym != NULL |
88b8e639 | 3237 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3238 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3239 | { | |
9055360d AM |
3240 | if (size == 64 |
3241 | && gsym != NULL | |
3242 | && target->abiversion() >= 2 | |
3243 | && !parameters->options().output_is_position_independent() | |
3244 | && !is_branch_reloc(this->r_type_)) | |
3245 | target->glink_section()->add_global_entry(gsym); | |
3246 | else | |
ec661b9d | 3247 | { |
64b5d6d7 AM |
3248 | if (stub_table == NULL |
3249 | && !(size == 32 | |
3250 | && gsym != NULL | |
3251 | && !parameters->options().output_is_position_independent() | |
3252 | && !is_branch_reloc(this->r_type_))) | |
9055360d AM |
3253 | stub_table = this->object_->stub_table(this->shndx_); |
3254 | if (stub_table == NULL) | |
3255 | { | |
64b5d6d7 AM |
3256 | // This is a ref from a data section to an ifunc symbol, |
3257 | // or a non-branch reloc for which we always want to use | |
3258 | // one set of stubs for resolving function addresses. | |
9055360d AM |
3259 | stub_table = ifunc_stub_table; |
3260 | } | |
3261 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3262 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3263 | if (from != invalid_address) | |
3264 | from += (this->object_->output_section(this->shndx_)->address() | |
3265 | + this->offset_); | |
9055360d | 3266 | if (gsym != NULL) |
dc60b26d AM |
3267 | ok = stub_table->add_plt_call_entry(from, |
3268 | this->object_, gsym, | |
7e57d19e AM |
3269 | this->r_type_, this->addend_, |
3270 | this->tocsave_); | |
9055360d | 3271 | else |
dc60b26d AM |
3272 | ok = stub_table->add_plt_call_entry(from, |
3273 | this->object_, this->r_sym_, | |
7e57d19e AM |
3274 | this->r_type_, this->addend_, |
3275 | this->tocsave_); | |
ec661b9d | 3276 | } |
ec661b9d AM |
3277 | } |
3278 | else | |
3279 | { | |
cbcb23fa | 3280 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
3281 | if (max_branch_offset == 0) |
3282 | return true; | |
ec661b9d AM |
3283 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3284 | gold_assert(from != invalid_address); | |
3285 | from += (this->object_->output_section(this->shndx_)->address() | |
3286 | + this->offset_); | |
3287 | Address to; | |
3288 | if (gsym != NULL) | |
3289 | { | |
3290 | switch (gsym->source()) | |
3291 | { | |
3292 | case Symbol::FROM_OBJECT: | |
3293 | { | |
3294 | Object* symobj = gsym->object(); | |
3295 | if (symobj->is_dynamic() | |
3296 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3297 | return true; |
ec661b9d AM |
3298 | bool is_ordinary; |
3299 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3300 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3301 | return true; |
ec661b9d AM |
3302 | } |
3303 | break; | |
3304 | ||
3305 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3306 | return true; |
ec661b9d AM |
3307 | |
3308 | default: | |
3309 | break; | |
3310 | } | |
3311 | Symbol_table::Compute_final_value_status status; | |
3312 | to = symtab->compute_final_value<size>(gsym, &status); | |
3313 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3314 | return true; |
9055360d AM |
3315 | if (size == 64) |
3316 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
3317 | } |
3318 | else | |
3319 | { | |
3320 | const Symbol_value<size>* psymval | |
3321 | = this->object_->local_symbol(this->r_sym_); | |
3322 | Symbol_value<size> symval; | |
0f125432 CC |
3323 | if (psymval->is_section_symbol()) |
3324 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3325 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3326 | typename ObjType::Compute_final_local_value_status status | |
3327 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3328 | &symval, symtab); | |
3329 | if (status != ObjType::CFLV_OK | |
3330 | || !symval.has_output_value()) | |
a3e60ddb | 3331 | return true; |
ec661b9d | 3332 | to = symval.value(this->object_, 0); |
9055360d AM |
3333 | if (size == 64) |
3334 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 3335 | } |
cbcb23fa AM |
3336 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3337 | to += this->addend_; | |
ec661b9d AM |
3338 | if (stub_table == NULL) |
3339 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3340 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3341 | { |
3342 | unsigned int dest_shndx; | |
1611bc4a AM |
3343 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3344 | &to, &dest_shndx)) | |
3345 | return true; | |
ec661b9d AM |
3346 | } |
3347 | Address delta = to - from; | |
3348 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
3349 | { | |
0cfdc767 AM |
3350 | if (stub_table == NULL) |
3351 | { | |
3352 | gold_warning(_("%s:%s: branch in non-executable section," | |
3353 | " no long branch stub for you"), | |
3354 | this->object_->name().c_str(), | |
3355 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3356 | return true; |
0cfdc767 | 3357 | } |
d49044c7 AM |
3358 | bool save_res = (size == 64 |
3359 | && gsym != NULL | |
3360 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3361 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3362 | ok = stub_table->add_long_branch_entry(this->object_, |
3363 | this->r_type_, | |
3364 | from, to, save_res); | |
ec661b9d AM |
3365 | } |
3366 | } | |
dc60b26d AM |
3367 | if (!ok) |
3368 | gold_debug(DEBUG_TARGET, | |
3369 | "branch at %s:%s+%#lx\n" | |
3370 | "can't reach stub attached to %s:%s", | |
3371 | this->object_->name().c_str(), | |
3372 | this->object_->section_name(this->shndx_).c_str(), | |
3373 | (unsigned long) this->offset_, | |
3374 | stub_table->relobj()->name().c_str(), | |
3375 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3376 | ||
3377 | return ok; | |
ec661b9d AM |
3378 | } |
3379 | ||
3380 | // Relaxation hook. This is where we do stub generation. | |
3381 | ||
3382 | template<int size, bool big_endian> | |
3383 | bool | |
3384 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3385 | const Input_objects*, | |
3386 | Symbol_table* symtab, | |
3387 | Layout* layout, | |
3388 | const Task* task) | |
3389 | { | |
3390 | unsigned int prev_brlt_size = 0; | |
3391 | if (pass == 1) | |
ec661b9d | 3392 | { |
b4f7960d AM |
3393 | bool thread_safe |
3394 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3395 | if (size == 64 | |
3396 | && this->abiversion() < 2 | |
3397 | && !thread_safe | |
3398 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3399 | { |
e2458743 | 3400 | static const char* const thread_starter[] = |
9e69ed50 AM |
3401 | { |
3402 | "pthread_create", | |
3403 | /* libstdc++ */ | |
3404 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3405 | /* librt */ | |
3406 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3407 | "mq_notify", "create_timer", | |
3408 | /* libanl */ | |
3409 | "getaddrinfo_a", | |
3410 | /* libgomp */ | |
80272b8c | 3411 | "GOMP_parallel", |
9e69ed50 | 3412 | "GOMP_parallel_start", |
80272b8c | 3413 | "GOMP_parallel_loop_static", |
9e69ed50 | 3414 | "GOMP_parallel_loop_static_start", |
80272b8c | 3415 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3416 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3417 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3418 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3419 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3420 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3421 | "GOMP_parallel_sections", |
43819297 | 3422 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3423 | /* libgo */ |
3424 | "__go_go", | |
9e69ed50 AM |
3425 | }; |
3426 | ||
e2458743 AM |
3427 | if (parameters->options().shared()) |
3428 | thread_safe = true; | |
3429 | else | |
9e69ed50 | 3430 | { |
e2458743 AM |
3431 | for (unsigned int i = 0; |
3432 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3433 | i++) | |
3434 | { | |
3435 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3436 | thread_safe = (sym != NULL | |
3437 | && sym->in_reg() | |
3438 | && sym->in_real_elf()); | |
3439 | if (thread_safe) | |
3440 | break; | |
3441 | } | |
9e69ed50 | 3442 | } |
ec661b9d | 3443 | } |
9e69ed50 | 3444 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3445 | } |
3446 | ||
3447 | if (pass == 1) | |
3448 | { | |
3449 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3450 | bool no_size_errors = true; | |
3451 | if (this->stub_group_size_ == 1) | |
3452 | this->stub_group_size_ = 0x1c00000; | |
3453 | else if (this->stub_group_size_ == -1) | |
3454 | this->stub_group_size_ = -0x1e00000; | |
3455 | else | |
3456 | no_size_errors = false; | |
3457 | this->group_sections(layout, task, no_size_errors); | |
3458 | } | |
3459 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3460 | { | |
3461 | this->branch_lookup_table_.clear(); | |
3462 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3463 | p != this->stub_tables_.end(); | |
3464 | ++p) | |
3465 | { | |
3466 | (*p)->clear_stubs(true); | |
3467 | } | |
3468 | this->stub_tables_.clear(); | |
3469 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3470 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3471 | program_name, this->stub_group_size_); |
3472 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3473 | } |
3474 | ||
3475 | // We need address of stub tables valid for make_stub. | |
3476 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3477 | p != this->stub_tables_.end(); | |
3478 | ++p) | |
3479 | { | |
3480 | const Powerpc_relobj<size, big_endian>* object | |
3481 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3482 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3483 | gold_assert(off != invalid_address); | |
3484 | Output_section* os = (*p)->output_section(); | |
3485 | (*p)->set_address_and_size(os, off); | |
3486 | } | |
3487 | ||
9e69ed50 AM |
3488 | if (pass != 1) |
3489 | { | |
3490 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3491 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3492 | this->branch_lookup_table_.clear(); | |
3493 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3494 | p != this->stub_tables_.end(); | |
3495 | ++p) | |
3496 | { | |
a3e60ddb | 3497 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3498 | } |
3499 | } | |
3500 | ||
3501 | // Build all the stubs. | |
a3e60ddb | 3502 | this->relax_failed_ = false; |
ec661b9d AM |
3503 | Stub_table<size, big_endian>* ifunc_stub_table |
3504 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3505 | Stub_table<size, big_endian>* one_stub_table | |
3506 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3507 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3508 | b != this->branch_info_.end(); | |
3509 | b++) | |
3510 | { | |
a3e60ddb AM |
3511 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3512 | && !this->relax_failed_) | |
3513 | { | |
3514 | this->relax_failed_ = true; | |
3515 | this->relax_fail_count_++; | |
3516 | if (this->relax_fail_count_ < 3) | |
3517 | return true; | |
3518 | } | |
ec661b9d AM |
3519 | } |
3520 | ||
9e69ed50 | 3521 | // Did anything change size? |
ec661b9d AM |
3522 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3523 | bool again = num_huge_branches != prev_brlt_size; | |
3524 | if (size == 64 && num_huge_branches != 0) | |
3525 | this->make_brlt_section(layout); | |
3526 | if (size == 64 && again) | |
3527 | this->brlt_section_->set_current_size(num_huge_branches); | |
3528 | ||
be897fb7 AM |
3529 | for (typename Stub_tables::reverse_iterator p = this->stub_tables_.rbegin(); |
3530 | p != this->stub_tables_.rend(); | |
3531 | ++p) | |
3532 | (*p)->remove_eh_frame(layout); | |
3533 | ||
3534 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3535 | p != this->stub_tables_.end(); | |
3536 | ++p) | |
3537 | (*p)->add_eh_frame(layout); | |
3538 | ||
ec661b9d AM |
3539 | typedef Unordered_set<Output_section*> Output_sections; |
3540 | Output_sections os_need_update; | |
3541 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3542 | p != this->stub_tables_.end(); | |
3543 | ++p) | |
3544 | { | |
3545 | if ((*p)->size_update()) | |
3546 | { | |
3547 | again = true; | |
3548 | os_need_update.insert((*p)->output_section()); | |
3549 | } | |
3550 | } | |
3551 | ||
9e69ed50 AM |
3552 | // Set output section offsets for all input sections in an output |
3553 | // section that just changed size. Anything past the stubs will | |
3554 | // need updating. | |
ec661b9d AM |
3555 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3556 | p != os_need_update.end(); | |
3557 | p++) | |
3558 | { | |
3559 | Output_section* os = *p; | |
3560 | Address off = 0; | |
3561 | typedef Output_section::Input_section_list Input_section_list; | |
3562 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3563 | i != os->input_sections().end(); | |
3564 | ++i) | |
3565 | { | |
3566 | off = align_address(off, i->addralign()); | |
3567 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3568 | i->relobj()->set_section_offset(i->shndx(), off); | |
3569 | if (i->is_relaxed_input_section()) | |
3570 | { | |
3571 | Stub_table<size, big_endian>* stub_table | |
3572 | = static_cast<Stub_table<size, big_endian>*>( | |
3573 | i->relaxed_input_section()); | |
6395d38b HS |
3574 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3575 | off += stub_table_size; | |
3576 | // After a few iterations, set current stub table size | |
3577 | // as min size threshold, so later stub tables can only | |
3578 | // grow in size. | |
3579 | if (pass >= 4) | |
3580 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3581 | } |
3582 | else | |
3583 | off += i->data_size(); | |
3584 | } | |
6830ee24 AM |
3585 | // If .branch_lt is part of this output section, then we have |
3586 | // just done the offset adjustment. | |
ec661b9d AM |
3587 | os->clear_section_offsets_need_adjustment(); |
3588 | } | |
3589 | ||
3590 | if (size == 64 | |
3591 | && !again | |
3592 | && num_huge_branches != 0 | |
3593 | && parameters->options().output_is_position_independent()) | |
3594 | { | |
3595 | // Fill in the BRLT relocs. | |
06f30c9d | 3596 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3597 | for (typename Branch_lookup_table::const_iterator p |
3598 | = this->branch_lookup_table_.begin(); | |
3599 | p != this->branch_lookup_table_.end(); | |
3600 | ++p) | |
3601 | { | |
3602 | this->brlt_section_->add_reloc(p->first, p->second); | |
3603 | } | |
06f30c9d | 3604 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3605 | } |
590b87ff AM |
3606 | |
3607 | if (!again | |
3608 | && (parameters->options().user_set_emit_stub_syms() | |
3609 | ? parameters->options().emit_stub_syms() | |
3610 | : (size == 64 | |
3611 | || parameters->options().output_is_position_independent() | |
3612 | || parameters->options().emit_relocs()))) | |
3613 | { | |
3614 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3615 | p != this->stub_tables_.end(); | |
3616 | ++p) | |
3617 | (*p)->define_stub_syms(symtab); | |
3618 | ||
3619 | if (this->glink_ != NULL) | |
3620 | { | |
9e390558 | 3621 | int stub_size = this->glink_->pltresolve_size(); |
590b87ff AM |
3622 | Address value = -stub_size; |
3623 | if (size == 64) | |
3624 | { | |
3625 | value = 8; | |
3626 | stub_size -= 8; | |
3627 | } | |
3628 | this->define_local(symtab, "__glink_PLTresolve", | |
3629 | this->glink_, value, stub_size); | |
3630 | ||
3631 | if (size != 64) | |
3632 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3633 | } | |
3634 | } | |
3635 | ||
ec661b9d AM |
3636 | return again; |
3637 | } | |
3638 | ||
9d5781f8 AM |
3639 | template<int size, bool big_endian> |
3640 | void | |
3641 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3642 | unsigned char* oview, | |
3643 | uint64_t* paddress, | |
3644 | off_t* plen) const | |
3645 | { | |
3646 | uint64_t address = plt->address(); | |
3647 | off_t len = plt->data_size(); | |
3648 | ||
3649 | if (plt == this->glink_) | |
3650 | { | |
3651 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3652 | if (len == 0) |
3653 | { | |
3654 | gold_assert(parameters->doing_static_link()); | |
3655 | // Static linking may need stubs, to support ifunc and long | |
3656 | // branches. We need to create an output section for | |
3657 | // .eh_frame early in the link process, to have a place to | |
3658 | // attach stub .eh_frame info. We also need to have | |
3659 | // registered a CIE that matches the stub CIE. Both of | |
3660 | // these requirements are satisfied by creating an FDE and | |
3661 | // CIE for .glink, even though static linking will leave | |
3662 | // .glink zero length. | |
3663 | // ??? Hopefully generating an FDE with a zero address range | |
3664 | // won't confuse anything that consumes .eh_frame info. | |
3665 | } | |
3666 | else if (size == 64) | |
9d5781f8 AM |
3667 | { |
3668 | // There is one word before __glink_PLTresolve | |
3669 | address += 8; | |
3670 | len -= 8; | |
3671 | } | |
3672 | else if (parameters->options().output_is_position_independent()) | |
3673 | { | |
3674 | // There are two FDEs for a position independent glink. | |
3675 | // The first covers the branch table, the second | |
3676 | // __glink_PLTresolve at the end of glink. | |
9e390558 | 3677 | off_t resolve_size = this->glink_->pltresolve_size(); |
5fe7ffdc | 3678 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3679 | len -= resolve_size; |
3680 | else | |
3681 | { | |
3682 | address += len - resolve_size; | |
3683 | len = resolve_size; | |
3684 | } | |
3685 | } | |
3686 | } | |
3687 | else | |
3688 | { | |
3689 | // Must be a stub table. | |
3690 | const Stub_table<size, big_endian>* stub_table | |
3691 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3692 | uint64_t stub_address = stub_table->stub_address(); | |
3693 | len -= stub_address - address; | |
3694 | address = stub_address; | |
3695 | } | |
3696 | ||
3697 | *paddress = address; | |
3698 | *plen = len; | |
3699 | } | |
3700 | ||
42cacb20 DE |
3701 | // A class to handle the PLT data. |
3702 | ||
3703 | template<int size, bool big_endian> | |
cf43a2fe | 3704 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3705 | { |
3706 | public: | |
3707 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3708 | size, big_endian> Reloc_section; | |
3709 | ||
e5d5f5ed AM |
3710 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3711 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3712 | const char* name) |
3713 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3714 | rel_(plt_rel), | |
3715 | targ_(targ), | |
e5d5f5ed AM |
3716 | name_(name) |
3717 | { } | |
42cacb20 DE |
3718 | |
3719 | // Add an entry to the PLT. | |
03e25981 | 3720 | void |
cf43a2fe | 3721 | add_entry(Symbol*); |
42cacb20 | 3722 | |
03e25981 | 3723 | void |
e5d5f5ed AM |
3724 | add_ifunc_entry(Symbol*); |
3725 | ||
2d7ad24e AM |
3726 | void |
3727 | add_local_entry(Sized_relobj_file<size, big_endian>*, unsigned int); | |
3728 | ||
03e25981 | 3729 | void |
e5d5f5ed AM |
3730 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3731 | ||
42cacb20 | 3732 | // Return the .rela.plt section data. |
e5d5f5ed | 3733 | Reloc_section* |
cf43a2fe AM |
3734 | rel_plt() const |
3735 | { | |
42cacb20 DE |
3736 | return this->rel_; |
3737 | } | |
3738 | ||
0e70b911 CC |
3739 | // Return the number of PLT entries. |
3740 | unsigned int | |
3741 | entry_count() const | |
d83ce4e3 | 3742 | { |
b3ccdeb5 AM |
3743 | if (this->current_data_size() == 0) |
3744 | return 0; | |
b4f7960d AM |
3745 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3746 | / this->plt_entry_size()); | |
d83ce4e3 | 3747 | } |
0e70b911 | 3748 | |
42cacb20 | 3749 | protected: |
42cacb20 | 3750 | void |
cf43a2fe | 3751 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3752 | { |
cf43a2fe | 3753 | os->set_entsize(0); |
42cacb20 DE |
3754 | } |
3755 | ||
6ce78956 AM |
3756 | // Write to a map file. |
3757 | void | |
3758 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3759 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3760 | |
cf43a2fe | 3761 | private: |
b4f7960d AM |
3762 | // Return the offset of the first non-reserved PLT entry. |
3763 | unsigned int | |
3764 | first_plt_entry_offset() const | |
3765 | { | |
2d7ad24e AM |
3766 | // IPLT and LPLT have no reserved entry. |
3767 | if (this->name_[3] == 'I' || this->name_[3] == 'L') | |
b4f7960d AM |
3768 | return 0; |
3769 | return this->targ_->first_plt_entry_offset(); | |
3770 | } | |
3771 | ||
3772 | // Return the size of each PLT entry. | |
3773 | unsigned int | |
3774 | plt_entry_size() const | |
3775 | { | |
3776 | return this->targ_->plt_entry_size(); | |
3777 | } | |
cf43a2fe | 3778 | |
42cacb20 DE |
3779 | // Write out the PLT data. |
3780 | void | |
3781 | do_write(Output_file*); | |
3782 | ||
3783 | // The reloc section. | |
3784 | Reloc_section* rel_; | |
cf43a2fe AM |
3785 | // Allows access to .glink for do_write. |
3786 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3787 | // What to report in map file. |
3788 | const char *name_; | |
42cacb20 DE |
3789 | }; |
3790 | ||
e5d5f5ed | 3791 | // Add an entry to the PLT. |
42cacb20 DE |
3792 | |
3793 | template<int size, bool big_endian> | |
03e25981 | 3794 | void |
e5d5f5ed | 3795 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3796 | { |
e5d5f5ed AM |
3797 | if (!gsym->has_plt_offset()) |
3798 | { | |
ec661b9d | 3799 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3800 | if (off == 0) |
3801 | off += this->first_plt_entry_offset(); | |
3802 | gsym->set_plt_offset(off); | |
3803 | gsym->set_needs_dynsym_entry(); | |
3804 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3805 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3806 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3807 | this->set_current_data_size(off); |
3808 | } | |
42cacb20 DE |
3809 | } |
3810 | ||
e5d5f5ed | 3811 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3812 | |
3813 | template<int size, bool big_endian> | |
03e25981 | 3814 | void |
e5d5f5ed | 3815 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3816 | { |
cf43a2fe AM |
3817 | if (!gsym->has_plt_offset()) |
3818 | { | |
ec661b9d | 3819 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3820 | gsym->set_plt_offset(off); |
e5d5f5ed | 3821 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3822 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3823 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3824 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3825 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3826 | this->set_current_data_size(off); |
3827 | } | |
3828 | } | |
3829 | ||
2d7ad24e AM |
3830 | // Add an entry for a local symbol to the PLT. |
3831 | ||
3832 | template<int size, bool big_endian> | |
3833 | void | |
3834 | Output_data_plt_powerpc<size, big_endian>::add_local_entry( | |
3835 | Sized_relobj_file<size, big_endian>* relobj, | |
3836 | unsigned int local_sym_index) | |
3837 | { | |
3838 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3839 | { | |
3840 | section_size_type off = this->current_data_size(); | |
3841 | relobj->set_local_plt_offset(local_sym_index, off); | |
3842 | if (this->rel_) | |
3843 | { | |
3844 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; | |
3845 | if (size == 64 && this->targ_->abiversion() < 2) | |
3846 | dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3847 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, | |
3848 | dynrel, this, off, 0); | |
3849 | } | |
3850 | off += this->plt_entry_size(); | |
3851 | this->set_current_data_size(off); | |
3852 | } | |
3853 | } | |
3854 | ||
e5d5f5ed AM |
3855 | // Add an entry for a local ifunc symbol to the IPLT. |
3856 | ||
3857 | template<int size, bool big_endian> | |
03e25981 | 3858 | void |
e5d5f5ed AM |
3859 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3860 | Sized_relobj_file<size, big_endian>* relobj, | |
3861 | unsigned int local_sym_index) | |
3862 | { | |
3863 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3864 | { | |
ec661b9d | 3865 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3866 | relobj->set_local_plt_offset(local_sym_index, off); |
3867 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3868 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3869 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3870 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3871 | this, off, 0); | |
b4f7960d | 3872 | off += this->plt_entry_size(); |
cf43a2fe AM |
3873 | this->set_current_data_size(off); |
3874 | } | |
42cacb20 DE |
3875 | } |
3876 | ||
dd93cd0a | 3877 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3878 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 3879 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
3880 | static const uint32_t add_3_3_2 = 0x7c631214; |
3881 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
34e0882b AM |
3882 | static const uint32_t add_3_12_2 = 0x7c6c1214; |
3883 | static const uint32_t add_3_12_13 = 0x7c6c6a14; | |
dd93cd0a | 3884 | static const uint32_t add_11_0_11 = 0x7d605a14; |
b4f7960d AM |
3885 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3886 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3887 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3888 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3889 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3890 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3891 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3892 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3893 | static const uint32_t addis_0_2 = 0x3c020000; |
3894 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3895 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3896 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3897 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3898 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3899 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3900 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3901 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3902 | static const uint32_t b = 0x48000000; |
3903 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3904 | static const uint32_t bctr = 0x4e800420; | |
34e0882b AM |
3905 | static const uint32_t bctrl = 0x4e800421; |
3906 | static const uint32_t beqlr = 0x4d820020; | |
f3a0ed29 | 3907 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3908 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3909 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3910 | static const uint32_t cmpldi_2_0 = 0x28220000; |
34e0882b AM |
3911 | static const uint32_t cmpdi_11_0 = 0x2c2b0000; |
3912 | static const uint32_t cmpwi_11_0 = 0x2c0b0000; | |
dd93cd0a AM |
3913 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3914 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
3915 | static const uint32_t ld_0_1 = 0xe8010000; |
3916 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3917 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3918 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 3919 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 3920 | static const uint32_t ld_2_12 = 0xe84c0000; |
34e0882b | 3921 | static const uint32_t ld_11_1 = 0xe9610000; |
b4f7960d | 3922 | static const uint32_t ld_11_2 = 0xe9620000; |
34e0882b | 3923 | static const uint32_t ld_11_3 = 0xe9630000; |
b4f7960d AM |
3924 | static const uint32_t ld_11_11 = 0xe96b0000; |
3925 | static const uint32_t ld_12_2 = 0xe9820000; | |
34e0882b | 3926 | static const uint32_t ld_12_3 = 0xe9830000; |
b4f7960d | 3927 | static const uint32_t ld_12_11 = 0xe98b0000; |
9055360d | 3928 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3929 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3930 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3931 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3932 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 3933 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
3934 | static const uint32_t lis_11 = 0x3d600000; |
3935 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3936 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 3937 | static const uint32_t lwz_0_12 = 0x800c0000; |
34e0882b | 3938 | static const uint32_t lwz_11_3 = 0x81630000; |
c9269dff AM |
3939 | static const uint32_t lwz_11_11 = 0x816b0000; |
3940 | static const uint32_t lwz_11_30 = 0x817e0000; | |
34e0882b | 3941 | static const uint32_t lwz_12_3 = 0x81830000; |
c9269dff | 3942 | static const uint32_t lwz_12_12 = 0x818c0000; |
dd93cd0a | 3943 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3944 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3945 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff | 3946 | static const uint32_t mflr_12 = 0x7d8802a6; |
34e0882b AM |
3947 | static const uint32_t mr_0_3 = 0x7c601b78; |
3948 | static const uint32_t mr_3_0 = 0x7c030378; | |
c9269dff AM |
3949 | static const uint32_t mtctr_0 = 0x7c0903a6; |
3950 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3951 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3952 | static const uint32_t mtlr_0 = 0x7c0803a6; |
34e0882b | 3953 | static const uint32_t mtlr_11 = 0x7d6803a6; |
c9269dff | 3954 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3955 | static const uint32_t nop = 0x60000000; |
c9269dff | 3956 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3957 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3958 | static const uint32_t std_0_1 = 0xf8010000; |
3959 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3960 | static const uint32_t std_2_1 = 0xf8410000; |
34e0882b | 3961 | static const uint32_t std_11_1 = 0xf9610000; |
f3a0ed29 AM |
3962 | static const uint32_t stfd_0_1 = 0xd8010000; |
3963 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3964 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3965 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3966 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3967 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3968 | |
3969 | // Write out the PLT. | |
3970 | ||
3971 | template<int size, bool big_endian> | |
3972 | void | |
3973 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3974 | { | |
2d7ad24e | 3975 | if (size == 32 && (this->name_[3] != 'I' && this->name_[3] != 'L')) |
cf43a2fe | 3976 | { |
ec661b9d | 3977 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3978 | const section_size_type oview_size |
3979 | = convert_to_section_size_type(this->data_size()); | |
3980 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3981 | unsigned char* pov = oview; | |
3982 | unsigned char* endpov = oview + oview_size; | |
3983 | ||
e5d5f5ed | 3984 | // The address of the .glink branch table |
cf43a2fe AM |
3985 | const Output_data_glink<size, big_endian>* glink |
3986 | = this->targ_->glink_section(); | |
ec661b9d | 3987 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3988 | |
3989 | while (pov < endpov) | |
3990 | { | |
3991 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3992 | pov += 4; | |
3993 | branch_tab += 4; | |
3994 | } | |
3995 | ||
3996 | of->write_output_view(offset, oview_size, oview); | |
3997 | } | |
3998 | } | |
3999 | ||
4000 | // Create the PLT section. | |
4001 | ||
4002 | template<int size, bool big_endian> | |
4003 | void | |
40b469d7 AM |
4004 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
4005 | Layout* layout) | |
cf43a2fe AM |
4006 | { |
4007 | if (this->plt_ == NULL) | |
4008 | { | |
40b469d7 AM |
4009 | if (this->got_ == NULL) |
4010 | this->got_section(symtab, layout); | |
4011 | ||
cf43a2fe AM |
4012 | if (this->glink_ == NULL) |
4013 | make_glink_section(layout); | |
4014 | ||
4015 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
4016 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 4017 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
4018 | this->rela_dyn_section(layout); |
4019 | ||
e5d5f5ed AM |
4020 | Reloc_section* plt_rel = new Reloc_section(false); |
4021 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
4022 | elfcpp::SHF_ALLOC, plt_rel, | |
4023 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
4024 | this->plt_ | |
4025 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 4026 | "** PLT"); |
cf43a2fe AM |
4027 | layout->add_output_section_data(".plt", |
4028 | (size == 32 | |
4029 | ? elfcpp::SHT_PROGBITS | |
4030 | : elfcpp::SHT_NOBITS), | |
4031 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4032 | this->plt_, | |
4033 | (size == 32 | |
4034 | ? ORDER_SMALL_DATA | |
4035 | : ORDER_SMALL_BSS), | |
4036 | false); | |
3254d32c AM |
4037 | |
4038 | Output_section* rela_plt_os = plt_rel->output_section(); | |
4039 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
4040 | } |
4041 | } | |
4042 | ||
e5d5f5ed AM |
4043 | // Create the IPLT section. |
4044 | ||
4045 | template<int size, bool big_endian> | |
4046 | void | |
40b469d7 AM |
4047 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
4048 | Layout* layout) | |
e5d5f5ed AM |
4049 | { |
4050 | if (this->iplt_ == NULL) | |
4051 | { | |
40b469d7 | 4052 | this->make_plt_section(symtab, layout); |
2d7ad24e | 4053 | this->make_lplt_section(layout); |
e5d5f5ed AM |
4054 | |
4055 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
4056 | if (this->rela_dyn_->output_section()) |
4057 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
4058 | this->iplt_ |
4059 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 4060 | "** IPLT"); |
6528b6eb AM |
4061 | if (this->plt_->output_section()) |
4062 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
4063 | } |
4064 | } | |
4065 | ||
2d7ad24e AM |
4066 | // Create the LPLT section. |
4067 | ||
4068 | template<int size, bool big_endian> | |
4069 | void | |
4070 | Target_powerpc<size, big_endian>::make_lplt_section(Layout* layout) | |
4071 | { | |
4072 | if (this->lplt_ == NULL) | |
4073 | { | |
4074 | Reloc_section* lplt_rel = NULL; | |
4075 | if (parameters->options().output_is_position_independent()) | |
4076 | { | |
4077 | lplt_rel = new Reloc_section(false); | |
4078 | this->rela_dyn_section(layout); | |
4079 | if (this->rela_dyn_->output_section()) | |
4080 | this->rela_dyn_->output_section() | |
4081 | ->add_output_section_data(lplt_rel); | |
4082 | } | |
4083 | this->lplt_ | |
4084 | = new Output_data_plt_powerpc<size, big_endian>(this, lplt_rel, | |
4085 | "** LPLT"); | |
4086 | this->make_brlt_section(layout); | |
4087 | if (this->brlt_section_ && this->brlt_section_->output_section()) | |
4088 | this->brlt_section_->output_section() | |
4089 | ->add_output_section_data(this->lplt_); | |
4090 | else | |
4091 | layout->add_output_section_data(".branch_lt", | |
4092 | elfcpp::SHT_PROGBITS, | |
4093 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4094 | this->lplt_, | |
4095 | ORDER_RELRO, | |
4096 | true); | |
4097 | } | |
4098 | } | |
4099 | ||
ec661b9d | 4100 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
4101 | |
4102 | template<int size, bool big_endian> | |
ec661b9d | 4103 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
4104 | { |
4105 | public: | |
ec661b9d AM |
4106 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4107 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4108 | size, big_endian> Reloc_section; | |
c9269dff | 4109 | |
ec661b9d AM |
4110 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
4111 | Reloc_section* brlt_rel) | |
4112 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4113 | rel_(brlt_rel), | |
4114 | targ_(targ) | |
4115 | { } | |
cf43a2fe | 4116 | |
06f30c9d CC |
4117 | void |
4118 | reset_brlt_sizes() | |
4119 | { | |
4120 | this->reset_data_size(); | |
4121 | this->rel_->reset_data_size(); | |
4122 | } | |
4123 | ||
4124 | void | |
4125 | finalize_brlt_sizes() | |
4126 | { | |
4127 | this->finalize_data_size(); | |
4128 | this->rel_->finalize_data_size(); | |
4129 | } | |
4130 | ||
ec661b9d | 4131 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 4132 | void |
ec661b9d AM |
4133 | add_reloc(Address to, unsigned int off) |
4134 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 4135 | |
ec661b9d | 4136 | // Update section and reloc section size. |
e5d5f5ed | 4137 | void |
ec661b9d AM |
4138 | set_current_size(unsigned int num_branches) |
4139 | { | |
4140 | this->reset_address_and_file_offset(); | |
4141 | this->set_current_data_size(num_branches * 16); | |
4142 | this->finalize_data_size(); | |
4143 | Output_section* os = this->output_section(); | |
4144 | os->set_section_offsets_need_adjustment(); | |
4145 | if (this->rel_ != NULL) | |
4146 | { | |
0e123f69 | 4147 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
4148 | this->rel_->reset_address_and_file_offset(); |
4149 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
4150 | this->rel_->finalize_data_size(); | |
4151 | Output_section* os = this->rel_->output_section(); | |
4152 | os->set_section_offsets_need_adjustment(); | |
4153 | } | |
4154 | } | |
cf43a2fe | 4155 | |
ec661b9d AM |
4156 | protected: |
4157 | void | |
4158 | do_adjust_output_section(Output_section* os) | |
4159 | { | |
4160 | os->set_entsize(0); | |
4161 | } | |
e5d5f5ed | 4162 | |
ec661b9d AM |
4163 | // Write to a map file. |
4164 | void | |
4165 | do_print_to_mapfile(Mapfile* mapfile) const | |
4166 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 4167 | |
ec661b9d AM |
4168 | private: |
4169 | // Write out the BRLT data. | |
4170 | void | |
4171 | do_write(Output_file*); | |
c9824451 | 4172 | |
ec661b9d AM |
4173 | // The reloc section. |
4174 | Reloc_section* rel_; | |
4175 | Target_powerpc<size, big_endian>* targ_; | |
4176 | }; | |
cf43a2fe | 4177 | |
ec661b9d AM |
4178 | // Make the branch lookup table section. |
4179 | ||
4180 | template<int size, bool big_endian> | |
4181 | void | |
4182 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
4183 | { | |
4184 | if (size == 64 && this->brlt_section_ == NULL) | |
4185 | { | |
4186 | Reloc_section* brlt_rel = NULL; | |
4187 | bool is_pic = parameters->options().output_is_position_independent(); | |
4188 | if (is_pic) | |
4189 | { | |
54483898 AM |
4190 | // When PIC we can't fill in .branch_lt but must initialise at |
4191 | // runtime via dynamic relocations. | |
ec661b9d AM |
4192 | this->rela_dyn_section(layout); |
4193 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
4194 | if (this->rela_dyn_->output_section()) |
4195 | this->rela_dyn_->output_section() | |
4196 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
4197 | } |
4198 | this->brlt_section_ | |
4199 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 4200 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
4201 | this->plt_->output_section() |
4202 | ->add_output_section_data(this->brlt_section_); | |
4203 | else | |
6830ee24 | 4204 | layout->add_output_section_data(".branch_lt", |
54483898 | 4205 | elfcpp::SHT_PROGBITS, |
ec661b9d AM |
4206 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, |
4207 | this->brlt_section_, | |
54483898 AM |
4208 | ORDER_RELRO, |
4209 | true); | |
ec661b9d AM |
4210 | } |
4211 | } | |
4212 | ||
6830ee24 | 4213 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
4214 | |
4215 | template<int size, bool big_endian> | |
4216 | void | |
4217 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4218 | { | |
4219 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
4220 | { | |
4221 | const section_size_type offset = this->offset(); | |
4222 | const section_size_type oview_size | |
4223 | = convert_to_section_size_type(this->data_size()); | |
4224 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4225 | ||
4226 | this->targ_->write_branch_lookup_table(oview); | |
4227 | of->write_output_view(offset, oview_size, oview); | |
4228 | } | |
4229 | } | |
4230 | ||
9e69ed50 AM |
4231 | static inline uint32_t |
4232 | l(uint32_t a) | |
4233 | { | |
4234 | return a & 0xffff; | |
4235 | } | |
4236 | ||
4237 | static inline uint32_t | |
4238 | hi(uint32_t a) | |
4239 | { | |
4240 | return l(a >> 16); | |
4241 | } | |
4242 | ||
4243 | static inline uint32_t | |
4244 | ha(uint32_t a) | |
4245 | { | |
4246 | return hi(a + 0x8000); | |
4247 | } | |
4248 | ||
9d5781f8 AM |
4249 | template<int size> |
4250 | struct Eh_cie | |
4251 | { | |
4252 | static const unsigned char eh_frame_cie[12]; | |
4253 | }; | |
4254 | ||
4255 | template<int size> | |
4256 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
4257 | { | |
4258 | 1, // CIE version. | |
4259 | 'z', 'R', 0, // Augmentation string. | |
4260 | 4, // Code alignment. | |
4261 | 0x80 - size / 8 , // Data alignment. | |
4262 | 65, // RA reg. | |
4263 | 1, // Augmentation size. | |
4264 | (elfcpp::DW_EH_PE_pcrel | |
4265 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
4266 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
4267 | }; | |
4268 | ||
b4f7960d AM |
4269 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
4270 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
4271 | { |
4272 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4273 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4274 | 0, // Augmentation size. | |
4275 | elfcpp::DW_CFA_advance_loc + 1, | |
4276 | elfcpp::DW_CFA_register, 65, 12, | |
15a3a14f | 4277 | elfcpp::DW_CFA_advance_loc + 5, |
9d5781f8 AM |
4278 | elfcpp::DW_CFA_restore_extended, 65 |
4279 | }; | |
4280 | ||
b4f7960d AM |
4281 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
4282 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
4283 | { | |
4284 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4285 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4286 | 0, // Augmentation size. | |
4287 | elfcpp::DW_CFA_advance_loc + 1, | |
4288 | elfcpp::DW_CFA_register, 65, 0, | |
15a3a14f | 4289 | elfcpp::DW_CFA_advance_loc + 7, |
b4f7960d AM |
4290 | elfcpp::DW_CFA_restore_extended, 65 |
4291 | }; | |
4292 | ||
9d5781f8 AM |
4293 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4294 | static const unsigned char glink_eh_frame_fde_32[] = | |
4295 | { | |
4296 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4297 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4298 | 0, // Augmentation size. | |
4299 | elfcpp::DW_CFA_advance_loc + 2, | |
4300 | elfcpp::DW_CFA_register, 65, 0, | |
4301 | elfcpp::DW_CFA_advance_loc + 4, | |
4302 | elfcpp::DW_CFA_restore_extended, 65 | |
4303 | }; | |
4304 | ||
4305 | static const unsigned char default_fde[] = | |
4306 | { | |
4307 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4308 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4309 | 0, // Augmentation size. | |
4310 | elfcpp::DW_CFA_nop, // Pad. | |
4311 | elfcpp::DW_CFA_nop, | |
4312 | elfcpp::DW_CFA_nop | |
4313 | }; | |
4314 | ||
9e69ed50 AM |
4315 | template<bool big_endian> |
4316 | static inline void | |
4317 | write_insn(unsigned char* p, uint32_t v) | |
4318 | { | |
4319 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4320 | } | |
4321 | ||
691d2e9a AM |
4322 | template<int size> |
4323 | static inline unsigned int | |
4324 | param_plt_align() | |
4325 | { | |
4326 | if (!parameters->options().user_set_plt_align()) | |
4327 | return size == 64 ? 32 : 8; | |
4328 | return 1 << parameters->options().plt_align(); | |
4329 | } | |
4330 | ||
ec661b9d AM |
4331 | // Stub_table holds information about plt and long branch stubs. |
4332 | // Stubs are built in an area following some input section determined | |
4333 | // by group_sections(). This input section is converted to a relaxed | |
4334 | // input section allowing it to be resized to accommodate the stubs | |
4335 | ||
4336 | template<int size, bool big_endian> | |
4337 | class Stub_table : public Output_relaxed_input_section | |
4338 | { | |
4339 | public: | |
7e57d19e AM |
4340 | struct Plt_stub_ent |
4341 | { | |
4342 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
7ee7ff70 | 4343 | : off_(off), indx_(indx), r2save_(0), localentry0_(0) |
7e57d19e AM |
4344 | { } |
4345 | ||
4346 | unsigned int off_; | |
7ee7ff70 | 4347 | unsigned int indx_ : 30; |
7e57d19e | 4348 | unsigned int r2save_ : 1; |
7ee7ff70 | 4349 | unsigned int localentry0_ : 1; |
7e57d19e | 4350 | }; |
ec661b9d AM |
4351 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4352 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4353 | ||
a3e60ddb AM |
4354 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4355 | Output_section* output_section, | |
590b87ff AM |
4356 | const Output_section::Input_section* owner, |
4357 | uint32_t id) | |
a3e60ddb AM |
4358 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4359 | owner->relobj() | |
4360 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4361 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4362 | orig_data_size_(owner->current_data_size()), |
4363 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4364 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
34e0882b AM |
4365 | need_save_res_(false), uniq_(id), tls_get_addr_opt_bctrl_(-1u), |
4366 | plt_fde_len_(0) | |
a3e60ddb AM |
4367 | { |
4368 | this->set_output_section(output_section); | |
ec661b9d | 4369 | |
a3e60ddb AM |
4370 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4371 | new_relaxed.push_back(this); | |
4372 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4373 | } | |
ec661b9d AM |
4374 | |
4375 | // Add a plt call stub. | |
a3e60ddb AM |
4376 | bool |
4377 | add_plt_call_entry(Address, | |
4378 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4379 | const Symbol*, |
4380 | unsigned int, | |
7e57d19e AM |
4381 | Address, |
4382 | bool); | |
ec661b9d | 4383 | |
a3e60ddb AM |
4384 | bool |
4385 | add_plt_call_entry(Address, | |
4386 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4387 | unsigned int, |
4388 | unsigned int, | |
7e57d19e AM |
4389 | Address, |
4390 | bool); | |
ec661b9d AM |
4391 | |
4392 | // Find a given plt call stub. | |
7e57d19e | 4393 | const Plt_stub_ent* |
ec661b9d AM |
4394 | find_plt_call_entry(const Symbol*) const; |
4395 | ||
7e57d19e | 4396 | const Plt_stub_ent* |
ec661b9d AM |
4397 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4398 | unsigned int) const; | |
4399 | ||
7e57d19e | 4400 | const Plt_stub_ent* |
ec661b9d AM |
4401 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4402 | const Symbol*, | |
4403 | unsigned int, | |
4404 | Address) const; | |
4405 | ||
7e57d19e | 4406 | const Plt_stub_ent* |
ec661b9d AM |
4407 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4408 | unsigned int, | |
4409 | unsigned int, | |
4410 | Address) const; | |
4411 | ||
4412 | // Add a long branch stub. | |
a3e60ddb AM |
4413 | bool |
4414 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 4415 | unsigned int, Address, Address, bool); |
ec661b9d AM |
4416 | |
4417 | Address | |
9d5781f8 AM |
4418 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4419 | Address) const; | |
ec661b9d | 4420 | |
a3e60ddb AM |
4421 | bool |
4422 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4423 | { | |
cbcb23fa | 4424 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
4425 | if (max_branch_offset == 0) |
4426 | return true; | |
4427 | gold_assert(from != invalid_address); | |
4428 | Address loc = off + this->stub_address(); | |
4429 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4430 | } | |
4431 | ||
ec661b9d | 4432 | void |
a3e60ddb | 4433 | clear_stubs(bool all) |
cf43a2fe | 4434 | { |
9e69ed50 AM |
4435 | this->plt_call_stubs_.clear(); |
4436 | this->plt_size_ = 0; | |
ec661b9d AM |
4437 | this->long_branch_stubs_.clear(); |
4438 | this->branch_size_ = 0; | |
d49044c7 | 4439 | this->need_save_res_ = false; |
a3e60ddb AM |
4440 | if (all) |
4441 | { | |
4442 | this->last_plt_size_ = 0; | |
4443 | this->last_branch_size_ = 0; | |
4444 | } | |
cf43a2fe AM |
4445 | } |
4446 | ||
ec661b9d AM |
4447 | Address |
4448 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4449 | { |
ec661b9d AM |
4450 | Address start_off = off; |
4451 | off += this->orig_data_size_; | |
4452 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4453 | if (this->need_save_res_) |
4454 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4455 | if (my_size != 0) |
4456 | off = align_address(off, this->stub_align()); | |
4457 | // Include original section size and alignment padding in size | |
4458 | my_size += off - start_off; | |
6395d38b HS |
4459 | // Ensure new size is always larger than min size |
4460 | // threshold. Alignment requirement is included in "my_size", so | |
4461 | // increase "my_size" does not invalidate alignment. | |
4462 | if (my_size < this->min_size_threshold_) | |
4463 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4464 | this->reset_address_and_file_offset(); |
4465 | this->set_current_data_size(my_size); | |
4466 | this->set_address_and_file_offset(os->address() + start_off, | |
4467 | os->offset() + start_off); | |
4468 | return my_size; | |
cf43a2fe AM |
4469 | } |
4470 | ||
ec661b9d | 4471 | Address |
9d5781f8 | 4472 | stub_address() const |
ec661b9d AM |
4473 | { |
4474 | return align_address(this->address() + this->orig_data_size_, | |
4475 | this->stub_align()); | |
4476 | } | |
4477 | ||
4478 | Address | |
9d5781f8 | 4479 | stub_offset() const |
ec661b9d AM |
4480 | { |
4481 | return align_address(this->offset() + this->orig_data_size_, | |
4482 | this->stub_align()); | |
4483 | } | |
4484 | ||
4485 | section_size_type | |
4486 | plt_size() const | |
4487 | { return this->plt_size_; } | |
4488 | ||
590b87ff AM |
4489 | void |
4490 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4491 | { this->min_size_threshold_ = min_size; } |
4492 | ||
590b87ff AM |
4493 | void |
4494 | define_stub_syms(Symbol_table*); | |
4495 | ||
ec661b9d AM |
4496 | bool |
4497 | size_update() | |
4498 | { | |
4499 | Output_section* os = this->output_section(); | |
4500 | if (os->addralign() < this->stub_align()) | |
4501 | { | |
4502 | os->set_addralign(this->stub_align()); | |
4503 | // FIXME: get rid of the insane checkpointing. | |
4504 | // We can't increase alignment of the input section to which | |
4505 | // stubs are attached; The input section may be .init which | |
4506 | // is pasted together with other .init sections to form a | |
4507 | // function. Aligning might insert zero padding resulting in | |
4508 | // sigill. However we do need to increase alignment of the | |
4509 | // output section so that the align_address() on offset in | |
4510 | // set_address_and_size() adds the same padding as the | |
4511 | // align_address() on address in stub_address(). | |
4512 | // What's more, we need this alignment for the layout done in | |
4513 | // relaxation_loop_body() so that the output section starts at | |
4514 | // a suitably aligned address. | |
4515 | os->checkpoint_set_addralign(this->stub_align()); | |
4516 | } | |
9e69ed50 AM |
4517 | if (this->last_plt_size_ != this->plt_size_ |
4518 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4519 | { |
9e69ed50 AM |
4520 | this->last_plt_size_ = this->plt_size_; |
4521 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4522 | return true; |
4523 | } | |
4524 | return false; | |
4525 | } | |
4526 | ||
34e0882b | 4527 | // Generate a suitable FDE to describe code in this stub group. |
9d5781f8 | 4528 | void |
34e0882b | 4529 | init_plt_fde(); |
be897fb7 | 4530 | |
34e0882b AM |
4531 | // Add .eh_frame info for this stub section. |
4532 | void | |
4533 | add_eh_frame(Layout* layout); | |
be897fb7 | 4534 | |
34e0882b | 4535 | // Remove .eh_frame info for this stub section. |
be897fb7 | 4536 | void |
34e0882b | 4537 | remove_eh_frame(Layout* layout); |
9d5781f8 | 4538 | |
ec661b9d AM |
4539 | Target_powerpc<size, big_endian>* |
4540 | targ() const | |
4541 | { return targ_; } | |
6ce78956 | 4542 | |
cf43a2fe | 4543 | private: |
bdab445c AM |
4544 | class Plt_stub_key; |
4545 | class Plt_stub_key_hash; | |
bdab445c AM |
4546 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4547 | Plt_stub_key_hash> Plt_stub_entries; | |
590b87ff AM |
4548 | class Branch_stub_ent; |
4549 | class Branch_stub_ent_hash; | |
4550 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
4551 | Branch_stub_ent_hash> Branch_stub_entries; | |
9e69ed50 AM |
4552 | |
4553 | // Alignment of stub section. | |
ec661b9d | 4554 | unsigned int |
9e69ed50 AM |
4555 | stub_align() const |
4556 | { | |
691d2e9a | 4557 | unsigned int min_align = size == 64 ? 32 : 16; |
9e69ed50 AM |
4558 | unsigned int user_align = 1 << parameters->options().plt_align(); |
4559 | return std::max(user_align, min_align); | |
4560 | } | |
cf43a2fe | 4561 | |
91c2b899 AM |
4562 | // Return the plt offset for the given call stub. |
4563 | Address | |
08be3224 AM |
4564 | plt_off(typename Plt_stub_entries::const_iterator p, |
4565 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
91c2b899 AM |
4566 | { |
4567 | const Symbol* gsym = p->first.sym_; | |
4568 | if (gsym != NULL) | |
08be3224 | 4569 | return this->targ_->plt_off(gsym, sec); |
91c2b899 AM |
4570 | else |
4571 | { | |
91c2b899 AM |
4572 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; |
4573 | unsigned int local_sym_index = p->first.locsym_; | |
08be3224 | 4574 | return this->targ_->plt_off(relobj, local_sym_index, sec); |
91c2b899 AM |
4575 | } |
4576 | } | |
4577 | ||
9e69ed50 | 4578 | // Size of a given plt call stub. |
ec661b9d | 4579 | unsigned int |
9e69ed50 AM |
4580 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
4581 | { | |
4582 | if (size == 32) | |
34e0882b AM |
4583 | { |
4584 | const Symbol* gsym = p->first.sym_; | |
9e390558 AM |
4585 | return (4 * 4 |
4586 | + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); | |
34e0882b | 4587 | } |
9e69ed50 | 4588 | |
08be3224 AM |
4589 | const Output_data_plt_powerpc<size, big_endian>* plt; |
4590 | Address plt_addr = this->plt_off(p, &plt); | |
4591 | plt_addr += plt->address(); | |
91c2b899 | 4592 | Address got_addr = this->targ_->got_section()->output_section()->address(); |
9e69ed50 AM |
4593 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
4594 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
4595 | got_addr += ppcobj->toc_base_offset(); |
4596 | Address off = plt_addr - got_addr; | |
b4f7960d | 4597 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
34e0882b AM |
4598 | const Symbol* gsym = p->first.sym_; |
4599 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
4600 | bytes += 13 * 4; | |
b4f7960d AM |
4601 | if (this->targ_->abiversion() < 2) |
4602 | { | |
4603 | bool static_chain = parameters->options().plt_static_chain(); | |
4604 | bool thread_safe = this->targ_->plt_thread_safe(); | |
4605 | bytes += (4 | |
4606 | + 4 * static_chain | |
4607 | + 8 * thread_safe | |
4608 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
4609 | } | |
34e0882b AM |
4610 | return bytes; |
4611 | } | |
4612 | ||
4613 | unsigned int | |
4614 | plt_call_align(unsigned int bytes) const | |
4615 | { | |
691d2e9a | 4616 | unsigned int align = param_plt_align<size>(); |
9e390558 | 4617 | return (bytes + align - 1) & -align; |
9e69ed50 | 4618 | } |
ec661b9d AM |
4619 | |
4620 | // Return long branch stub size. | |
4621 | unsigned int | |
590b87ff | 4622 | branch_stub_size(typename Branch_stub_entries::const_iterator p) |
ec661b9d | 4623 | { |
590b87ff AM |
4624 | Address loc = this->stub_address() + this->last_plt_size_ + p->second; |
4625 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
ec661b9d | 4626 | return 4; |
9e390558 AM |
4627 | unsigned int bytes = 16; |
4628 | if (size == 32 && parameters->options().output_is_position_independent()) | |
4629 | bytes += 16; | |
4630 | return bytes; | |
ec661b9d AM |
4631 | } |
4632 | ||
4633 | // Write out stubs. | |
cf43a2fe AM |
4634 | void |
4635 | do_write(Output_file*); | |
4636 | ||
ec661b9d | 4637 | // Plt call stub keys. |
bdab445c | 4638 | class Plt_stub_key |
cf43a2fe | 4639 | { |
d1a8cabd | 4640 | public: |
bdab445c | 4641 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
4642 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
4643 | { } | |
4644 | ||
bdab445c | 4645 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 4646 | unsigned int locsym_index) |
c9824451 AM |
4647 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4648 | { } | |
4649 | ||
bdab445c | 4650 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4651 | const Symbol* sym, |
4652 | unsigned int r_type, | |
4653 | Address addend) | |
e5d5f5ed | 4654 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
4655 | { |
4656 | if (size != 32) | |
ec661b9d | 4657 | this->addend_ = addend; |
d1a8cabd | 4658 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
4659 | && (r_type == elfcpp::R_PPC_PLTREL24 |
4660 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
cf43a2fe | 4661 | { |
ec661b9d | 4662 | this->addend_ = addend; |
e5d5f5ed | 4663 | if (this->addend_ >= 32768) |
d1a8cabd | 4664 | this->object_ = object; |
cf43a2fe AM |
4665 | } |
4666 | } | |
4667 | ||
bdab445c | 4668 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4669 | unsigned int locsym_index, |
4670 | unsigned int r_type, | |
4671 | Address addend) | |
e5d5f5ed AM |
4672 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4673 | { | |
4674 | if (size != 32) | |
ec661b9d | 4675 | this->addend_ = addend; |
e5d5f5ed | 4676 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
4677 | && (r_type == elfcpp::R_PPC_PLTREL24 |
4678 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
ec661b9d | 4679 | this->addend_ = addend; |
e5d5f5ed AM |
4680 | } |
4681 | ||
bdab445c | 4682 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
4683 | { |
4684 | return (this->sym_ == that.sym_ | |
4685 | && this->object_ == that.object_ | |
e5d5f5ed AM |
4686 | && this->addend_ == that.addend_ |
4687 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 4688 | } |
c9269dff AM |
4689 | |
4690 | const Symbol* sym_; | |
e5d5f5ed AM |
4691 | const Sized_relobj_file<size, big_endian>* object_; |
4692 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
4693 | unsigned int locsym_; | |
cf43a2fe AM |
4694 | }; |
4695 | ||
bdab445c | 4696 | class Plt_stub_key_hash |
cf43a2fe | 4697 | { |
d1a8cabd | 4698 | public: |
bdab445c | 4699 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
4700 | { |
4701 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
4702 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
4703 | ^ ent.addend_ |
4704 | ^ ent.locsym_); | |
cf43a2fe | 4705 | } |
ec661b9d AM |
4706 | }; |
4707 | ||
4708 | // Long branch stub keys. | |
4709 | class Branch_stub_ent | |
4710 | { | |
4711 | public: | |
d49044c7 AM |
4712 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, |
4713 | Address to, bool save_res) | |
4714 | : dest_(to), toc_base_off_(0), save_res_(save_res) | |
ec661b9d AM |
4715 | { |
4716 | if (size == 64) | |
4717 | toc_base_off_ = obj->toc_base_offset(); | |
4718 | } | |
4719 | ||
4720 | bool operator==(const Branch_stub_ent& that) const | |
4721 | { | |
4722 | return (this->dest_ == that.dest_ | |
4723 | && (size == 32 | |
4724 | || this->toc_base_off_ == that.toc_base_off_)); | |
4725 | } | |
cf43a2fe | 4726 | |
ec661b9d AM |
4727 | Address dest_; |
4728 | unsigned int toc_base_off_; | |
d49044c7 | 4729 | bool save_res_; |
ec661b9d | 4730 | }; |
cf43a2fe | 4731 | |
ec661b9d AM |
4732 | class Branch_stub_ent_hash |
4733 | { | |
4734 | public: | |
4735 | size_t operator()(const Branch_stub_ent& ent) const | |
4736 | { return ent.dest_ ^ ent.toc_base_off_; } | |
4737 | }; | |
cf43a2fe | 4738 | |
ec661b9d | 4739 | // In a sane world this would be a global. |
cf43a2fe | 4740 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 4741 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
4742 | Plt_stub_entries plt_call_stubs_; |
4743 | // Map destination address to stub offset. | |
ec661b9d AM |
4744 | Branch_stub_entries long_branch_stubs_; |
4745 | // size of input section | |
4746 | section_size_type orig_data_size_; | |
4747 | // size of stubs | |
9e69ed50 | 4748 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
4749 | // Some rare cases cause (PR/20529) fluctuation in stub table |
4750 | // size, which leads to an endless relax loop. This is to be fixed | |
4751 | // by, after the first few iterations, allowing only increase of | |
4752 | // stub table size. This variable sets the minimal possible size of | |
4753 | // a stub table, it is zero for the first few iterations, then | |
4754 | // increases monotonically. | |
4755 | Address min_size_threshold_; | |
d49044c7 AM |
4756 | // Set if this stub group needs a copy of out-of-line register |
4757 | // save/restore functions. | |
4758 | bool need_save_res_; | |
590b87ff AM |
4759 | // Per stub table unique identifier. |
4760 | uint32_t uniq_; | |
34e0882b AM |
4761 | // The bctrl in the __tls_get_addr_opt stub, if present. |
4762 | unsigned int tls_get_addr_opt_bctrl_; | |
4763 | // FDE unwind info for this stub group. | |
4764 | unsigned int plt_fde_len_; | |
4765 | unsigned char plt_fde_[20]; | |
cf43a2fe AM |
4766 | }; |
4767 | ||
ec661b9d | 4768 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 4769 | // sym/object/addend combo. |
cf43a2fe AM |
4770 | |
4771 | template<int size, bool big_endian> | |
a3e60ddb | 4772 | bool |
ec661b9d | 4773 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4774 | Address from, |
c9824451 | 4775 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4776 | const Symbol* gsym, |
ec661b9d | 4777 | unsigned int r_type, |
7e57d19e AM |
4778 | Address addend, |
4779 | bool tocsave) | |
cf43a2fe | 4780 | { |
bdab445c AM |
4781 | Plt_stub_key key(object, gsym, r_type, addend); |
4782 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4783 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4784 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4785 | if (p.second) |
7ee7ff70 AM |
4786 | { |
4787 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
4788 | if (size == 64 | |
4789 | && this->targ_->is_elfv2_localentry0(gsym)) | |
4790 | { | |
4791 | p.first->second.localentry0_ = 1; | |
4792 | this->targ_->set_has_localentry0(); | |
4793 | } | |
34e0882b AM |
4794 | if (this->targ_->is_tls_get_addr_opt(gsym)) |
4795 | { | |
4796 | this->targ_->set_has_tls_get_addr_opt(); | |
4797 | this->tls_get_addr_opt_bctrl_ = this->plt_size_ - 5 * 4; | |
4798 | } | |
4799 | this->plt_size_ = this->plt_call_align(this->plt_size_); | |
7ee7ff70 AM |
4800 | } |
4801 | if (size == 64 | |
4802 | && !tocsave | |
4803 | && !p.first->second.localentry0_) | |
7e57d19e | 4804 | p.first->second.r2save_ = 1; |
bdab445c | 4805 | return this->can_reach_stub(from, ent.off_, r_type); |
cf43a2fe AM |
4806 | } |
4807 | ||
e5d5f5ed | 4808 | template<int size, bool big_endian> |
a3e60ddb | 4809 | bool |
ec661b9d | 4810 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4811 | Address from, |
c9824451 | 4812 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4813 | unsigned int locsym_index, |
ec661b9d | 4814 | unsigned int r_type, |
7e57d19e AM |
4815 | Address addend, |
4816 | bool tocsave) | |
e5d5f5ed | 4817 | { |
bdab445c AM |
4818 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4819 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4820 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4821 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4822 | if (p.second) |
7ee7ff70 AM |
4823 | { |
4824 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
34e0882b | 4825 | this->plt_size_ = this->plt_call_align(this->plt_size_); |
7ee7ff70 AM |
4826 | if (size == 64 |
4827 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) | |
4828 | { | |
4829 | p.first->second.localentry0_ = 1; | |
4830 | this->targ_->set_has_localentry0(); | |
4831 | } | |
4832 | } | |
4833 | if (size == 64 | |
4834 | && !tocsave | |
4835 | && !p.first->second.localentry0_) | |
7e57d19e | 4836 | p.first->second.r2save_ = 1; |
bdab445c | 4837 | return this->can_reach_stub(from, ent.off_, r_type); |
e5d5f5ed AM |
4838 | } |
4839 | ||
ec661b9d AM |
4840 | // Find a plt call stub. |
4841 | ||
cf43a2fe | 4842 | template<int size, bool big_endian> |
7e57d19e | 4843 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4844 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4845 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4846 | const Symbol* gsym, |
ec661b9d AM |
4847 | unsigned int r_type, |
4848 | Address addend) const | |
c9824451 | 4849 | { |
bdab445c AM |
4850 | Plt_stub_key key(object, gsym, r_type, addend); |
4851 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4852 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4853 | return NULL; |
4854 | return &p->second; | |
c9824451 AM |
4855 | } |
4856 | ||
4857 | template<int size, bool big_endian> | |
7e57d19e | 4858 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4859 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4860 | { |
bdab445c AM |
4861 | Plt_stub_key key(gsym); |
4862 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4863 | if (p == this->plt_call_stubs_.end()) |
4864 | return NULL; | |
4865 | return &p->second; | |
cf43a2fe AM |
4866 | } |
4867 | ||
e5d5f5ed | 4868 | template<int size, bool big_endian> |
7e57d19e | 4869 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4870 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4871 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4872 | unsigned int locsym_index, |
ec661b9d AM |
4873 | unsigned int r_type, |
4874 | Address addend) const | |
e5d5f5ed | 4875 | { |
bdab445c AM |
4876 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4877 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4878 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4879 | return NULL; |
4880 | return &p->second; | |
c9824451 AM |
4881 | } |
4882 | ||
4883 | template<int size, bool big_endian> | |
7e57d19e | 4884 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4885 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4886 | const Sized_relobj_file<size, big_endian>* object, |
4887 | unsigned int locsym_index) const | |
4888 | { | |
bdab445c AM |
4889 | Plt_stub_key key(object, locsym_index); |
4890 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4891 | if (p == this->plt_call_stubs_.end()) |
4892 | return NULL; | |
4893 | return &p->second; | |
ec661b9d AM |
4894 | } |
4895 | ||
4896 | // Add a long branch stub if we don't already have one to given | |
4897 | // destination. | |
4898 | ||
4899 | template<int size, bool big_endian> | |
a3e60ddb | 4900 | bool |
ec661b9d AM |
4901 | Stub_table<size, big_endian>::add_long_branch_entry( |
4902 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4903 | unsigned int r_type, |
4904 | Address from, | |
d49044c7 AM |
4905 | Address to, |
4906 | bool save_res) | |
ec661b9d | 4907 | { |
d49044c7 | 4908 | Branch_stub_ent ent(object, to, save_res); |
ec661b9d | 4909 | Address off = this->branch_size_; |
590b87ff AM |
4910 | std::pair<typename Branch_stub_entries::iterator, bool> p |
4911 | = this->long_branch_stubs_.insert(std::make_pair(ent, off)); | |
4912 | if (p.second) | |
ec661b9d | 4913 | { |
d49044c7 AM |
4914 | if (save_res) |
4915 | this->need_save_res_ = true; | |
4916 | else | |
4917 | { | |
590b87ff | 4918 | unsigned int stub_size = this->branch_stub_size(p.first); |
d49044c7 AM |
4919 | this->branch_size_ = off + stub_size; |
4920 | if (size == 64 && stub_size != 4) | |
4921 | this->targ_->add_branch_lookup_table(to); | |
4922 | } | |
ec661b9d | 4923 | } |
a3e60ddb | 4924 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4925 | } |
4926 | ||
d49044c7 | 4927 | // Find long branch stub offset. |
ec661b9d AM |
4928 | |
4929 | template<int size, bool big_endian> | |
ec5b8187 | 4930 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4931 | Stub_table<size, big_endian>::find_long_branch_entry( |
4932 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4933 | Address to) const |
ec661b9d | 4934 | { |
d49044c7 | 4935 | Branch_stub_ent ent(object, to, false); |
ec661b9d AM |
4936 | typename Branch_stub_entries::const_iterator p |
4937 | = this->long_branch_stubs_.find(ent); | |
d49044c7 AM |
4938 | if (p == this->long_branch_stubs_.end()) |
4939 | return invalid_address; | |
4940 | if (p->first.save_res_) | |
4941 | return to - this->targ_->savres_section()->address() + this->branch_size_; | |
4942 | return p->second; | |
e5d5f5ed AM |
4943 | } |
4944 | ||
34e0882b AM |
4945 | // Generate a suitable FDE to describe code in this stub group. |
4946 | // The __tls_get_addr_opt call stub needs to describe where it saves | |
4947 | // LR, to support exceptions that might be thrown from __tls_get_addr. | |
4948 | ||
4949 | template<int size, bool big_endian> | |
4950 | void | |
4951 | Stub_table<size, big_endian>::init_plt_fde() | |
4952 | { | |
4953 | unsigned char* p = this->plt_fde_; | |
4954 | // offset pcrel sdata4, size udata4, and augmentation size byte. | |
4955 | memset (p, 0, 9); | |
4956 | p += 9; | |
4957 | if (this->tls_get_addr_opt_bctrl_ != -1u) | |
4958 | { | |
4959 | unsigned int to_bctrl = this->tls_get_addr_opt_bctrl_ / 4; | |
4960 | if (to_bctrl < 64) | |
4961 | *p++ = elfcpp::DW_CFA_advance_loc + to_bctrl; | |
4962 | else if (to_bctrl < 256) | |
4963 | { | |
4964 | *p++ = elfcpp::DW_CFA_advance_loc1; | |
4965 | *p++ = to_bctrl; | |
4966 | } | |
4967 | else if (to_bctrl < 65536) | |
4968 | { | |
4969 | *p++ = elfcpp::DW_CFA_advance_loc2; | |
4970 | elfcpp::Swap<16, big_endian>::writeval(p, to_bctrl); | |
4971 | p += 2; | |
4972 | } | |
4973 | else | |
4974 | { | |
4975 | *p++ = elfcpp::DW_CFA_advance_loc4; | |
4976 | elfcpp::Swap<32, big_endian>::writeval(p, to_bctrl); | |
4977 | p += 4; | |
4978 | } | |
4979 | *p++ = elfcpp::DW_CFA_offset_extended_sf; | |
4980 | *p++ = 65; | |
4981 | *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; | |
4982 | *p++ = elfcpp::DW_CFA_advance_loc + 4; | |
4983 | *p++ = elfcpp::DW_CFA_restore_extended; | |
4984 | *p++ = 65; | |
4985 | } | |
4986 | this->plt_fde_len_ = p - this->plt_fde_; | |
4987 | } | |
4988 | ||
4989 | // Add .eh_frame info for this stub section. Unlike other linker | |
4990 | // generated .eh_frame this is added late in the link, because we | |
4991 | // only want the .eh_frame info if this particular stub section is | |
4992 | // non-empty. | |
4993 | ||
4994 | template<int size, bool big_endian> | |
4995 | void | |
4996 | Stub_table<size, big_endian>::add_eh_frame(Layout* layout) | |
4997 | { | |
4998 | if (!parameters->options().ld_generated_unwind_info()) | |
4999 | return; | |
5000 | ||
5001 | // Since we add stub .eh_frame info late, it must be placed | |
5002 | // after all other linker generated .eh_frame info so that | |
5003 | // merge mapping need not be updated for input sections. | |
5004 | // There is no provision to use a different CIE to that used | |
5005 | // by .glink. | |
5006 | if (!this->targ_->has_glink()) | |
5007 | return; | |
5008 | ||
5009 | if (this->plt_size_ + this->branch_size_ + this->need_save_res_ == 0) | |
5010 | return; | |
5011 | ||
5012 | this->init_plt_fde(); | |
5013 | layout->add_eh_frame_for_plt(this, | |
5014 | Eh_cie<size>::eh_frame_cie, | |
5015 | sizeof (Eh_cie<size>::eh_frame_cie), | |
5016 | this->plt_fde_, this->plt_fde_len_); | |
5017 | } | |
5018 | ||
5019 | template<int size, bool big_endian> | |
5020 | void | |
5021 | Stub_table<size, big_endian>::remove_eh_frame(Layout* layout) | |
5022 | { | |
5023 | if (this->plt_fde_len_ != 0) | |
5024 | { | |
5025 | layout->remove_eh_frame_for_plt(this, | |
5026 | Eh_cie<size>::eh_frame_cie, | |
5027 | sizeof (Eh_cie<size>::eh_frame_cie), | |
5028 | this->plt_fde_, this->plt_fde_len_); | |
5029 | this->plt_fde_len_ = 0; | |
5030 | } | |
5031 | } | |
5032 | ||
ec661b9d AM |
5033 | // A class to handle .glink. |
5034 | ||
5035 | template<int size, bool big_endian> | |
5036 | class Output_data_glink : public Output_section_data | |
5037 | { | |
5038 | public: | |
9055360d AM |
5039 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
5040 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
5041 | |
5042 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
5043 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
5044 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
5045 | { } |
5046 | ||
9d5781f8 | 5047 | void |
9055360d | 5048 | add_eh_frame(Layout* layout); |
9d5781f8 | 5049 | |
9055360d AM |
5050 | void |
5051 | add_global_entry(const Symbol*); | |
5052 | ||
5053 | Address | |
5054 | find_global_entry(const Symbol*) const; | |
5055 | ||
9e390558 AM |
5056 | unsigned int |
5057 | global_entry_align(unsigned int off) const | |
5058 | { | |
691d2e9a | 5059 | unsigned int align = param_plt_align<size>(); |
9e390558 AM |
5060 | return (off + align - 1) & -align; |
5061 | } | |
5062 | ||
5063 | unsigned int | |
5064 | global_entry_off() const | |
5065 | { | |
5066 | return this->global_entry_align(this->end_branch_table_); | |
5067 | } | |
5068 | ||
9055360d AM |
5069 | Address |
5070 | global_entry_address() const | |
5071 | { | |
5072 | gold_assert(this->is_data_size_valid()); | |
9e390558 AM |
5073 | return this->address() + this->global_entry_off(); |
5074 | } | |
5075 | ||
5076 | int | |
5077 | pltresolve_size() const | |
5078 | { | |
5079 | if (size == 64) | |
5080 | return (8 | |
407aa07c | 5081 | + (this->targ_->abiversion() < 2 ? 11 * 4 : 14 * 4)); |
9e390558 | 5082 | return 16 * 4; |
9d5781f8 AM |
5083 | } |
5084 | ||
ec661b9d AM |
5085 | protected: |
5086 | // Write to a map file. | |
5087 | void | |
5088 | do_print_to_mapfile(Mapfile* mapfile) const | |
5089 | { mapfile->print_output_data(this, _("** glink")); } | |
5090 | ||
5091 | private: | |
5092 | void | |
5093 | set_final_data_size(); | |
5094 | ||
5095 | // Write out .glink | |
5096 | void | |
5097 | do_write(Output_file*); | |
5098 | ||
5099 | // Allows access to .got and .plt for do_write. | |
5100 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
5101 | |
5102 | // Map sym to stub offset. | |
5103 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
5104 | Global_entry_stub_entries global_entry_stubs_; | |
5105 | ||
5106 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
5107 | }; |
5108 | ||
9055360d AM |
5109 | template<int size, bool big_endian> |
5110 | void | |
5111 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
5112 | { | |
5113 | if (!parameters->options().ld_generated_unwind_info()) | |
5114 | return; | |
5115 | ||
5116 | if (size == 64) | |
5117 | { | |
5118 | if (this->targ_->abiversion() < 2) | |
5119 | layout->add_eh_frame_for_plt(this, | |
5120 | Eh_cie<64>::eh_frame_cie, | |
5121 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5122 | glink_eh_frame_fde_64v1, | |
5123 | sizeof (glink_eh_frame_fde_64v1)); | |
5124 | else | |
5125 | layout->add_eh_frame_for_plt(this, | |
5126 | Eh_cie<64>::eh_frame_cie, | |
5127 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5128 | glink_eh_frame_fde_64v2, | |
5129 | sizeof (glink_eh_frame_fde_64v2)); | |
5130 | } | |
5131 | else | |
5132 | { | |
5133 | // 32-bit .glink can use the default since the CIE return | |
5134 | // address reg, LR, is valid. | |
5135 | layout->add_eh_frame_for_plt(this, | |
5136 | Eh_cie<32>::eh_frame_cie, | |
5137 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5138 | default_fde, | |
5139 | sizeof (default_fde)); | |
5140 | // Except where LR is used in a PIC __glink_PLTresolve. | |
5141 | if (parameters->options().output_is_position_independent()) | |
5142 | layout->add_eh_frame_for_plt(this, | |
5143 | Eh_cie<32>::eh_frame_cie, | |
5144 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5145 | glink_eh_frame_fde_32, | |
5146 | sizeof (glink_eh_frame_fde_32)); | |
5147 | } | |
5148 | } | |
5149 | ||
5150 | template<int size, bool big_endian> | |
5151 | void | |
5152 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
5153 | { | |
9e390558 | 5154 | unsigned int off = this->global_entry_align(this->ge_size_); |
9055360d | 5155 | std::pair<typename Global_entry_stub_entries::iterator, bool> p |
9e390558 | 5156 | = this->global_entry_stubs_.insert(std::make_pair(gsym, off)); |
9055360d | 5157 | if (p.second) |
407aa07c | 5158 | this->ge_size_ = off + 16; |
9055360d AM |
5159 | } |
5160 | ||
5161 | template<int size, bool big_endian> | |
5162 | typename Output_data_glink<size, big_endian>::Address | |
5163 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
5164 | { | |
5165 | typename Global_entry_stub_entries::const_iterator p | |
5166 | = this->global_entry_stubs_.find(gsym); | |
5167 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
5168 | } | |
5169 | ||
cf43a2fe AM |
5170 | template<int size, bool big_endian> |
5171 | void | |
5172 | Output_data_glink<size, big_endian>::set_final_data_size() | |
5173 | { | |
ec661b9d AM |
5174 | unsigned int count = this->targ_->plt_entry_count(); |
5175 | section_size_type total = 0; | |
cf43a2fe AM |
5176 | |
5177 | if (count != 0) | |
5178 | { | |
5179 | if (size == 32) | |
5180 | { | |
cf43a2fe AM |
5181 | // space for branch table |
5182 | total += 4 * (count - 1); | |
5183 | ||
5184 | total += -total & 15; | |
9e390558 | 5185 | total += this->pltresolve_size(); |
cf43a2fe AM |
5186 | } |
5187 | else | |
5188 | { | |
9e390558 | 5189 | total += this->pltresolve_size(); |
cf43a2fe AM |
5190 | |
5191 | // space for branch table | |
b4f7960d AM |
5192 | total += 4 * count; |
5193 | if (this->targ_->abiversion() < 2) | |
5194 | { | |
5195 | total += 4 * count; | |
5196 | if (count > 0x8000) | |
5197 | total += 4 * (count - 0x8000); | |
5198 | } | |
cf43a2fe AM |
5199 | } |
5200 | } | |
9055360d | 5201 | this->end_branch_table_ = total; |
9e390558 | 5202 | total = this->global_entry_align(total); |
9055360d | 5203 | total += this->ge_size_; |
cf43a2fe AM |
5204 | |
5205 | this->set_data_size(total); | |
5206 | } | |
5207 | ||
590b87ff AM |
5208 | // Define symbols on stubs, identifying the stub. |
5209 | ||
5210 | template<int size, bool big_endian> | |
5211 | void | |
5212 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
5213 | { | |
5214 | if (!this->plt_call_stubs_.empty()) | |
5215 | { | |
5216 | // The key for the plt call stub hash table includes addresses, | |
5217 | // therefore traversal order depends on those addresses, which | |
5218 | // can change between runs if gold is a PIE. Unfortunately the | |
5219 | // output .symtab ordering depends on the order in which symbols | |
5220 | // are added to the linker symtab. We want reproducible output | |
5221 | // so must sort the call stub symbols. | |
5222 | typedef typename Plt_stub_entries::const_iterator plt_iter; | |
5223 | std::vector<plt_iter> sorted; | |
5224 | sorted.resize(this->plt_call_stubs_.size()); | |
5225 | ||
5226 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5227 | cs != this->plt_call_stubs_.end(); | |
5228 | ++cs) | |
bdab445c | 5229 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
5230 | |
5231 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
5232 | { | |
5233 | plt_iter cs = sorted[i]; | |
5234 | char add[10]; | |
5235 | add[0] = 0; | |
5236 | if (cs->first.addend_ != 0) | |
5237 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
5238 | char obj[10]; |
5239 | obj[0] = 0; | |
5240 | if (cs->first.object_) | |
590b87ff AM |
5241 | { |
5242 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5243 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
5244 | sprintf(obj, "%x:", ppcobj->uniq()); |
5245 | } | |
5246 | char localname[9]; | |
5247 | const char *symname; | |
5248 | if (cs->first.sym_ == NULL) | |
5249 | { | |
5250 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
5251 | symname = localname; |
5252 | } | |
34e0882b AM |
5253 | else if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
5254 | symname = this->targ_->tls_get_addr_opt()->name(); | |
590b87ff AM |
5255 | else |
5256 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
5257 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
5258 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
5259 | Address value |
5260 | = this->stub_address() - this->address() + cs->second.off_; | |
34e0882b | 5261 | unsigned int stub_size = this->plt_call_align(this->plt_call_size(cs)); |
590b87ff AM |
5262 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5263 | } | |
5264 | } | |
5265 | ||
5266 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5267 | for (branch_iter bs = this->long_branch_stubs_.begin(); | |
5268 | bs != this->long_branch_stubs_.end(); | |
5269 | ++bs) | |
5270 | { | |
5271 | if (bs->first.save_res_) | |
5272 | continue; | |
5273 | ||
5274 | char* name = new char[8 + 13 + 16 + 1]; | |
5275 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
5276 | static_cast<unsigned long long>(bs->first.dest_)); | |
5277 | Address value = (this->stub_address() - this->address() | |
5278 | + this->plt_size_ + bs->second); | |
5279 | unsigned int stub_size = this->branch_stub_size(bs); | |
5280 | this->targ_->define_local(symtab, name, this, value, stub_size); | |
5281 | } | |
5282 | } | |
5283 | ||
ec661b9d | 5284 | // Write out plt and long branch stub code. |
cf43a2fe AM |
5285 | |
5286 | template<int size, bool big_endian> | |
5287 | void | |
ec661b9d | 5288 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 5289 | { |
ec661b9d AM |
5290 | if (this->plt_call_stubs_.empty() |
5291 | && this->long_branch_stubs_.empty()) | |
5292 | return; | |
5293 | ||
5294 | const section_size_type start_off = this->offset(); | |
5295 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 5296 | const section_size_type oview_size = |
ec661b9d | 5297 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 5298 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 5299 | unsigned char* p; |
42cacb20 | 5300 | |
cf43a2fe AM |
5301 | if (size == 64) |
5302 | { | |
ec661b9d AM |
5303 | const Output_data_got_powerpc<size, big_endian>* got |
5304 | = this->targ_->got_section(); | |
dd93cd0a | 5305 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 5306 | |
ec661b9d | 5307 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 5308 | { |
ec661b9d AM |
5309 | // Write out plt call stubs. |
5310 | typename Plt_stub_entries::const_iterator cs; | |
5311 | for (cs = this->plt_call_stubs_.begin(); | |
5312 | cs != this->plt_call_stubs_.end(); | |
5313 | ++cs) | |
e5d5f5ed | 5314 | { |
08be3224 AM |
5315 | const Output_data_plt_powerpc<size, big_endian>* plt; |
5316 | Address pltoff = this->plt_off(cs, &plt); | |
5317 | Address plt_addr = pltoff + plt->address(); | |
ec661b9d AM |
5318 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
5319 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
5320 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 5321 | Address off = plt_addr - got_addr; |
ec661b9d | 5322 | |
9e69ed50 | 5323 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
5324 | gold_error(_("%s: linkage table error against `%s'"), |
5325 | cs->first.object_->name().c_str(), | |
5326 | cs->first.sym_->demangled_name().c_str()); | |
5327 | ||
b4f7960d AM |
5328 | bool plt_load_toc = this->targ_->abiversion() < 2; |
5329 | bool static_chain | |
5330 | = plt_load_toc && parameters->options().plt_static_chain(); | |
5331 | bool thread_safe | |
5332 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
5333 | bool use_fake_dep = false; |
5334 | Address cmp_branch_off = 0; | |
407aa07c | 5335 | if (thread_safe) |
9e69ed50 AM |
5336 | { |
5337 | unsigned int pltindex | |
5338 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
5339 | / this->targ_->plt_entry_size()); | |
5340 | Address glinkoff | |
9e390558 | 5341 | = (this->targ_->glink_section()->pltresolve_size() |
9e69ed50 AM |
5342 | + pltindex * 8); |
5343 | if (pltindex > 32768) | |
5344 | glinkoff += (pltindex - 32768) * 4; | |
5345 | Address to | |
5346 | = this->targ_->glink_section()->address() + glinkoff; | |
5347 | Address from | |
7e57d19e AM |
5348 | = (this->stub_address() + cs->second.off_ + 20 |
5349 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
5350 | + 4 * (ha(off) != 0) |
5351 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
5352 | + 4 * static_chain); | |
5353 | cmp_branch_off = to - from; | |
5354 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
5355 | } | |
5356 | ||
bdab445c | 5357 | p = oview + cs->second.off_; |
34e0882b AM |
5358 | const Symbol* gsym = cs->first.sym_; |
5359 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
5360 | { | |
5361 | write_insn<big_endian>(p, ld_11_3 + 0); | |
5362 | p += 4; | |
5363 | write_insn<big_endian>(p, ld_12_3 + 8); | |
5364 | p += 4; | |
5365 | write_insn<big_endian>(p, mr_0_3); | |
5366 | p += 4; | |
5367 | write_insn<big_endian>(p, cmpdi_11_0); | |
5368 | p += 4; | |
5369 | write_insn<big_endian>(p, add_3_12_13); | |
5370 | p += 4; | |
5371 | write_insn<big_endian>(p, beqlr); | |
5372 | p += 4; | |
5373 | write_insn<big_endian>(p, mr_3_0); | |
5374 | p += 4; | |
5375 | if (!cs->second.localentry0_) | |
5376 | { | |
5377 | write_insn<big_endian>(p, mflr_11); | |
5378 | p += 4; | |
5379 | write_insn<big_endian>(p, (std_11_1 | |
5380 | + this->targ_->stk_linker())); | |
5381 | p += 4; | |
5382 | } | |
407aa07c | 5383 | use_fake_dep = thread_safe; |
34e0882b | 5384 | } |
9e69ed50 | 5385 | if (ha(off) != 0) |
ec661b9d | 5386 | { |
7e57d19e AM |
5387 | if (cs->second.r2save_) |
5388 | { | |
5389 | write_insn<big_endian>(p, | |
5390 | std_2_1 + this->targ_->stk_toc()); | |
5391 | p += 4; | |
5392 | } | |
397998fc AM |
5393 | if (plt_load_toc) |
5394 | { | |
5395 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
5396 | p += 4; | |
5397 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
5398 | p += 4; | |
5399 | } | |
5400 | else | |
5401 | { | |
5402 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
5403 | p += 4; | |
5404 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
5405 | p += 4; | |
5406 | } | |
b4f7960d AM |
5407 | if (plt_load_toc |
5408 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 5409 | { |
b4f7960d AM |
5410 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
5411 | p += 4; | |
9e69ed50 | 5412 | off = 0; |
ec661b9d | 5413 | } |
b4f7960d AM |
5414 | write_insn<big_endian>(p, mtctr_12); |
5415 | p += 4; | |
5416 | if (plt_load_toc) | |
9e69ed50 | 5417 | { |
b4f7960d AM |
5418 | if (use_fake_dep) |
5419 | { | |
5420 | write_insn<big_endian>(p, xor_2_12_12); | |
5421 | p += 4; | |
5422 | write_insn<big_endian>(p, add_11_11_2); | |
5423 | p += 4; | |
5424 | } | |
5425 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
5426 | p += 4; | |
5427 | if (static_chain) | |
5428 | { | |
5429 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
5430 | p += 4; | |
5431 | } | |
9e69ed50 | 5432 | } |
ec661b9d AM |
5433 | } |
5434 | else | |
5435 | { | |
7e57d19e AM |
5436 | if (cs->second.r2save_) |
5437 | { | |
5438 | write_insn<big_endian>(p, | |
5439 | std_2_1 + this->targ_->stk_toc()); | |
5440 | p += 4; | |
5441 | } | |
b4f7960d AM |
5442 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
5443 | p += 4; | |
5444 | if (plt_load_toc | |
5445 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 5446 | { |
b4f7960d AM |
5447 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
5448 | p += 4; | |
9e69ed50 | 5449 | off = 0; |
ec661b9d | 5450 | } |
b4f7960d AM |
5451 | write_insn<big_endian>(p, mtctr_12); |
5452 | p += 4; | |
5453 | if (plt_load_toc) | |
9e69ed50 | 5454 | { |
b4f7960d AM |
5455 | if (use_fake_dep) |
5456 | { | |
5457 | write_insn<big_endian>(p, xor_11_12_12); | |
5458 | p += 4; | |
5459 | write_insn<big_endian>(p, add_2_2_11); | |
5460 | p += 4; | |
5461 | } | |
5462 | if (static_chain) | |
5463 | { | |
5464 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
5465 | p += 4; | |
5466 | } | |
5467 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
5468 | p += 4; | |
9e69ed50 | 5469 | } |
ec661b9d | 5470 | } |
34e0882b AM |
5471 | if (!cs->second.localentry0_ |
5472 | && this->targ_->is_tls_get_addr_opt(gsym)) | |
5473 | { | |
407aa07c | 5474 | write_insn<big_endian>(p, bctrl); |
34e0882b AM |
5475 | p += 4; |
5476 | write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); | |
5477 | p += 4; | |
5478 | write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); | |
5479 | p += 4; | |
5480 | write_insn<big_endian>(p, mtlr_11); | |
5481 | p += 4; | |
5482 | write_insn<big_endian>(p, blr); | |
5483 | } | |
5484 | else if (thread_safe && !use_fake_dep) | |
9e69ed50 | 5485 | { |
b4f7960d AM |
5486 | write_insn<big_endian>(p, cmpldi_2_0); |
5487 | p += 4; | |
5488 | write_insn<big_endian>(p, bnectr_p4); | |
5489 | p += 4; | |
9e69ed50 AM |
5490 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
5491 | } | |
5492 | else | |
407aa07c | 5493 | write_insn<big_endian>(p, bctr); |
e5d5f5ed | 5494 | } |
ec661b9d AM |
5495 | } |
5496 | ||
5497 | // Write out long branch stubs. | |
5498 | typename Branch_stub_entries::const_iterator bs; | |
5499 | for (bs = this->long_branch_stubs_.begin(); | |
5500 | bs != this->long_branch_stubs_.end(); | |
5501 | ++bs) | |
5502 | { | |
d49044c7 AM |
5503 | if (bs->first.save_res_) |
5504 | continue; | |
ec661b9d AM |
5505 | p = oview + this->plt_size_ + bs->second; |
5506 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5507 | Address delta = bs->first.dest_ - loc; | |
5508 | if (delta + (1 << 25) < 2 << 25) | |
5509 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 5510 | else |
cf43a2fe | 5511 | { |
ec661b9d AM |
5512 | Address brlt_addr |
5513 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
5514 | gold_assert(brlt_addr != invalid_address); | |
5515 | brlt_addr += this->targ_->brlt_section()->address(); | |
5516 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
5517 | Address brltoff = brlt_addr - got_addr; | |
5518 | if (ha(brltoff) == 0) | |
5519 | { | |
b4f7960d | 5520 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
5521 | } |
5522 | else | |
cf43a2fe | 5523 | { |
397998fc AM |
5524 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
5525 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 5526 | } |
b4f7960d | 5527 | write_insn<big_endian>(p, mtctr_12), p += 4; |
407aa07c | 5528 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 5529 | } |
ec661b9d AM |
5530 | } |
5531 | } | |
5532 | else | |
5533 | { | |
5534 | if (!this->plt_call_stubs_.empty()) | |
5535 | { | |
ec661b9d AM |
5536 | // The address of _GLOBAL_OFFSET_TABLE_. |
5537 | Address g_o_t = invalid_address; | |
5538 | ||
5539 | // Write out plt call stubs. | |
5540 | typename Plt_stub_entries::const_iterator cs; | |
5541 | for (cs = this->plt_call_stubs_.begin(); | |
5542 | cs != this->plt_call_stubs_.end(); | |
5543 | ++cs) | |
cf43a2fe | 5544 | { |
08be3224 AM |
5545 | const Output_data_plt_powerpc<size, big_endian>* plt; |
5546 | Address plt_addr = this->plt_off(cs, &plt); | |
5547 | plt_addr += plt->address(); | |
ec661b9d | 5548 | |
bdab445c | 5549 | p = oview + cs->second.off_; |
34e0882b AM |
5550 | const Symbol* gsym = cs->first.sym_; |
5551 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
5552 | { | |
5553 | write_insn<big_endian>(p, lwz_11_3 + 0); | |
5554 | p += 4; | |
5555 | write_insn<big_endian>(p, lwz_12_3 + 4); | |
5556 | p += 4; | |
5557 | write_insn<big_endian>(p, mr_0_3); | |
5558 | p += 4; | |
5559 | write_insn<big_endian>(p, cmpwi_11_0); | |
5560 | p += 4; | |
5561 | write_insn<big_endian>(p, add_3_12_2); | |
5562 | p += 4; | |
5563 | write_insn<big_endian>(p, beqlr); | |
5564 | p += 4; | |
5565 | write_insn<big_endian>(p, mr_3_0); | |
5566 | p += 4; | |
5567 | write_insn<big_endian>(p, nop); | |
5568 | p += 4; | |
5569 | } | |
ec661b9d AM |
5570 | if (parameters->options().output_is_position_independent()) |
5571 | { | |
5572 | Address got_addr; | |
5573 | const Powerpc_relobj<size, big_endian>* ppcobj | |
5574 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
5575 | (cs->first.object_)); | |
5576 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
5577 | { | |
5578 | unsigned int got2 = ppcobj->got2_shndx(); | |
5579 | got_addr = ppcobj->get_output_section_offset(got2); | |
5580 | gold_assert(got_addr != invalid_address); | |
5581 | got_addr += (ppcobj->output_section(got2)->address() | |
5582 | + cs->first.addend_); | |
5583 | } | |
5584 | else | |
5585 | { | |
5586 | if (g_o_t == invalid_address) | |
5587 | { | |
5588 | const Output_data_got_powerpc<size, big_endian>* got | |
5589 | = this->targ_->got_section(); | |
5590 | g_o_t = got->address() + got->g_o_t(); | |
5591 | } | |
5592 | got_addr = g_o_t; | |
5593 | } | |
5594 | ||
9e69ed50 AM |
5595 | Address off = plt_addr - got_addr; |
5596 | if (ha(off) == 0) | |
9e390558 | 5597 | write_insn<big_endian>(p, lwz_11_30 + l(off)); |
ec661b9d AM |
5598 | else |
5599 | { | |
9e390558 AM |
5600 | write_insn<big_endian>(p, addis_11_30 + ha(off)); |
5601 | p += 4; | |
5602 | write_insn<big_endian>(p, lwz_11_11 + l(off)); | |
ec661b9d AM |
5603 | } |
5604 | } | |
5605 | else | |
5606 | { | |
9e390558 AM |
5607 | write_insn<big_endian>(p, lis_11 + ha(plt_addr)); |
5608 | p += 4; | |
5609 | write_insn<big_endian>(p, lwz_11_11 + l(plt_addr)); | |
ec661b9d | 5610 | } |
9e390558 AM |
5611 | p += 4; |
5612 | write_insn<big_endian>(p, mtctr_11); | |
5613 | p += 4; | |
407aa07c | 5614 | write_insn<big_endian>(p, bctr); |
ec661b9d AM |
5615 | } |
5616 | } | |
5617 | ||
5618 | // Write out long branch stubs. | |
5619 | typename Branch_stub_entries::const_iterator bs; | |
5620 | for (bs = this->long_branch_stubs_.begin(); | |
5621 | bs != this->long_branch_stubs_.end(); | |
5622 | ++bs) | |
5623 | { | |
d49044c7 AM |
5624 | if (bs->first.save_res_) |
5625 | continue; | |
ec661b9d AM |
5626 | p = oview + this->plt_size_ + bs->second; |
5627 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5628 | Address delta = bs->first.dest_ - loc; | |
5629 | if (delta + (1 << 25) < 2 << 25) | |
5630 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
5631 | else if (!parameters->options().output_is_position_independent()) | |
5632 | { | |
9e390558 AM |
5633 | write_insn<big_endian>(p, lis_12 + ha(bs->first.dest_)); |
5634 | p += 4; | |
5635 | write_insn<big_endian>(p, addi_12_12 + l(bs->first.dest_)); | |
ec661b9d AM |
5636 | } |
5637 | else | |
5638 | { | |
5639 | delta -= 8; | |
9e390558 AM |
5640 | write_insn<big_endian>(p, mflr_0); |
5641 | p += 4; | |
5642 | write_insn<big_endian>(p, bcl_20_31); | |
5643 | p += 4; | |
5644 | write_insn<big_endian>(p, mflr_12); | |
5645 | p += 4; | |
5646 | write_insn<big_endian>(p, addis_12_12 + ha(delta)); | |
5647 | p += 4; | |
5648 | write_insn<big_endian>(p, addi_12_12 + l(delta)); | |
5649 | p += 4; | |
5650 | write_insn<big_endian>(p, mtlr_0); | |
cf43a2fe | 5651 | } |
9e390558 AM |
5652 | p += 4; |
5653 | write_insn<big_endian>(p, mtctr_12); | |
5654 | p += 4; | |
407aa07c | 5655 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 5656 | } |
ec661b9d | 5657 | } |
d49044c7 AM |
5658 | if (this->need_save_res_) |
5659 | { | |
5660 | p = oview + this->plt_size_ + this->branch_size_; | |
5661 | memcpy (p, this->targ_->savres_section()->contents(), | |
5662 | this->targ_->savres_section()->data_size()); | |
5663 | } | |
ec661b9d AM |
5664 | } |
5665 | ||
5666 | // Write out .glink. | |
5667 | ||
5668 | template<int size, bool big_endian> | |
5669 | void | |
5670 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
5671 | { | |
5672 | const section_size_type off = this->offset(); | |
5673 | const section_size_type oview_size = | |
5674 | convert_to_section_size_type(this->data_size()); | |
5675 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5676 | unsigned char* p; | |
5677 | ||
5678 | // The base address of the .plt section. | |
5679 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
5680 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 5681 | |
ec661b9d AM |
5682 | if (size == 64) |
5683 | { | |
9055360d | 5684 | if (this->end_branch_table_ != 0) |
b4f7960d | 5685 | { |
9055360d AM |
5686 | // Write pltresolve stub. |
5687 | p = oview; | |
5688 | Address after_bcl = this->address() + 16; | |
5689 | Address pltoff = plt_base - after_bcl; | |
5690 | ||
5691 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 5692 | |
b4f7960d | 5693 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 5694 | { |
9055360d AM |
5695 | write_insn<big_endian>(p, mflr_12), p += 4; |
5696 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5697 | write_insn<big_endian>(p, mflr_11), p += 4; | |
5698 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
5699 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
5700 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5701 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5702 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
5703 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5704 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
5705 | } | |
5706 | else | |
5707 | { | |
5708 | write_insn<big_endian>(p, mflr_0), p += 4; | |
5709 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5710 | write_insn<big_endian>(p, mflr_11), p += 4; | |
7ee7ff70 | 5711 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; |
9055360d AM |
5712 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; |
5713 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
5714 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
5715 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5716 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
5717 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5718 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
5719 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5720 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
5721 | } | |
407aa07c | 5722 | write_insn<big_endian>(p, bctr), p += 4; |
9e390558 | 5723 | gold_assert(p == oview + this->pltresolve_size()); |
9055360d AM |
5724 | |
5725 | // Write lazy link call stubs. | |
5726 | uint32_t indx = 0; | |
5727 | while (p < oview + this->end_branch_table_) | |
5728 | { | |
5729 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 5730 | { |
9055360d AM |
5731 | if (indx < 0x8000) |
5732 | { | |
5733 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
5734 | } | |
5735 | else | |
5736 | { | |
bbec1a5d | 5737 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
5738 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
5739 | } | |
b4f7960d | 5740 | } |
9055360d AM |
5741 | uint32_t branch_off = 8 - (p - oview); |
5742 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
5743 | indx++; | |
cf43a2fe | 5744 | } |
9055360d AM |
5745 | } |
5746 | ||
5747 | Address plt_base = this->targ_->plt_section()->address(); | |
5748 | Address iplt_base = invalid_address; | |
9e390558 | 5749 | unsigned int global_entry_off = this->global_entry_off(); |
9055360d AM |
5750 | Address global_entry_base = this->address() + global_entry_off; |
5751 | typename Global_entry_stub_entries::const_iterator ge; | |
5752 | for (ge = this->global_entry_stubs_.begin(); | |
5753 | ge != this->global_entry_stubs_.end(); | |
5754 | ++ge) | |
5755 | { | |
5756 | p = oview + global_entry_off + ge->second; | |
5757 | Address plt_addr = ge->first->plt_offset(); | |
5758 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
5759 | && ge->first->can_use_relative_reloc(false)) | |
5760 | { | |
5761 | if (iplt_base == invalid_address) | |
5762 | iplt_base = this->targ_->iplt_section()->address(); | |
5763 | plt_addr += iplt_base; | |
5764 | } | |
5765 | else | |
5766 | plt_addr += plt_base; | |
5767 | Address my_addr = global_entry_base + ge->second; | |
5768 | Address off = plt_addr - my_addr; | |
5769 | ||
5770 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
5771 | gold_error(_("%s: linkage table error against `%s'"), | |
5772 | ge->first->object()->name().c_str(), | |
5773 | ge->first->demangled_name().c_str()); | |
5774 | ||
5775 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
5776 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
5777 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
407aa07c | 5778 | write_insn<big_endian>(p, bctr); |
cf43a2fe AM |
5779 | } |
5780 | } | |
5781 | else | |
5782 | { | |
ec661b9d AM |
5783 | const Output_data_got_powerpc<size, big_endian>* got |
5784 | = this->targ_->got_section(); | |
dd93cd0a AM |
5785 | // The address of _GLOBAL_OFFSET_TABLE_. |
5786 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 5787 | |
cf43a2fe | 5788 | // Write out pltresolve branch table. |
ec661b9d | 5789 | p = oview; |
9e390558 | 5790 | unsigned int the_end = oview_size - this->pltresolve_size(); |
c9269dff | 5791 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
5792 | while (p < end_p - 8 * 4) |
5793 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
5794 | while (p < end_p) | |
5795 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 5796 | |
cf43a2fe | 5797 | // Write out pltresolve call stub. |
9e390558 | 5798 | end_p = oview + oview_size; |
cf43a2fe | 5799 | if (parameters->options().output_is_position_independent()) |
42cacb20 | 5800 | { |
ec661b9d | 5801 | Address res0_off = 0; |
dd93cd0a AM |
5802 | Address after_bcl_off = the_end + 12; |
5803 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe | 5804 | |
9e390558 AM |
5805 | write_insn<big_endian>(p, addis_11_11 + ha(bcl_res0)); |
5806 | p += 4; | |
5807 | write_insn<big_endian>(p, mflr_0); | |
5808 | p += 4; | |
5809 | write_insn<big_endian>(p, bcl_20_31); | |
5810 | p += 4; | |
5811 | write_insn<big_endian>(p, addi_11_11 + l(bcl_res0)); | |
5812 | p += 4; | |
5813 | write_insn<big_endian>(p, mflr_12); | |
5814 | p += 4; | |
5815 | write_insn<big_endian>(p, mtlr_0); | |
5816 | p += 4; | |
5817 | write_insn<big_endian>(p, sub_11_11_12); | |
5818 | p += 4; | |
cf43a2fe | 5819 | |
dd93cd0a | 5820 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe | 5821 | |
9e390558 AM |
5822 | write_insn<big_endian>(p, addis_12_12 + ha(got_bcl)); |
5823 | p += 4; | |
cf43a2fe AM |
5824 | if (ha(got_bcl) == ha(got_bcl + 4)) |
5825 | { | |
9e390558 AM |
5826 | write_insn<big_endian>(p, lwz_0_12 + l(got_bcl)); |
5827 | p += 4; | |
5828 | write_insn<big_endian>(p, lwz_12_12 + l(got_bcl + 4)); | |
cf43a2fe AM |
5829 | } |
5830 | else | |
5831 | { | |
9e390558 AM |
5832 | write_insn<big_endian>(p, lwzu_0_12 + l(got_bcl)); |
5833 | p += 4; | |
5834 | write_insn<big_endian>(p, lwz_12_12 + 4); | |
cf43a2fe | 5835 | } |
9e390558 AM |
5836 | p += 4; |
5837 | write_insn<big_endian>(p, mtctr_0); | |
5838 | p += 4; | |
5839 | write_insn<big_endian>(p, add_0_11_11); | |
5840 | p += 4; | |
5841 | write_insn<big_endian>(p, add_11_0_11); | |
42cacb20 | 5842 | } |
cf43a2fe | 5843 | else |
42cacb20 | 5844 | { |
ec661b9d | 5845 | Address res0 = this->address(); |
cf43a2fe | 5846 | |
9e390558 AM |
5847 | write_insn<big_endian>(p, lis_12 + ha(g_o_t + 4)); |
5848 | p += 4; | |
5849 | write_insn<big_endian>(p, addis_11_11 + ha(-res0)); | |
5850 | p += 4; | |
cf43a2fe | 5851 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 5852 | write_insn<big_endian>(p, lwz_0_12 + l(g_o_t + 4)); |
cf43a2fe | 5853 | else |
9e390558 AM |
5854 | write_insn<big_endian>(p, lwzu_0_12 + l(g_o_t + 4)); |
5855 | p += 4; | |
5856 | write_insn<big_endian>(p, addi_11_11 + l(-res0)); | |
5857 | p += 4; | |
5858 | write_insn<big_endian>(p, mtctr_0); | |
5859 | p += 4; | |
5860 | write_insn<big_endian>(p, add_0_11_11); | |
5861 | p += 4; | |
cf43a2fe | 5862 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 5863 | write_insn<big_endian>(p, lwz_12_12 + l(g_o_t + 8)); |
cf43a2fe | 5864 | else |
9e390558 AM |
5865 | write_insn<big_endian>(p, lwz_12_12 + 4); |
5866 | p += 4; | |
5867 | write_insn<big_endian>(p, add_11_0_11); | |
5868 | } | |
5869 | p += 4; | |
407aa07c AM |
5870 | write_insn<big_endian>(p, bctr); |
5871 | p += 4; | |
9e390558 AM |
5872 | while (p < end_p) |
5873 | { | |
5874 | write_insn<big_endian>(p, nop); | |
5875 | p += 4; | |
42cacb20 DE |
5876 | } |
5877 | } | |
5878 | ||
cf43a2fe AM |
5879 | of->write_output_view(off, oview_size, oview); |
5880 | } | |
5881 | ||
f3a0ed29 AM |
5882 | |
5883 | // A class to handle linker generated save/restore functions. | |
5884 | ||
5885 | template<int size, bool big_endian> | |
5886 | class Output_data_save_res : public Output_section_data_build | |
5887 | { | |
5888 | public: | |
5889 | Output_data_save_res(Symbol_table* symtab); | |
5890 | ||
d49044c7 AM |
5891 | const unsigned char* |
5892 | contents() const | |
5893 | { | |
5894 | return contents_; | |
5895 | } | |
5896 | ||
f3a0ed29 AM |
5897 | protected: |
5898 | // Write to a map file. | |
5899 | void | |
5900 | do_print_to_mapfile(Mapfile* mapfile) const | |
5901 | { mapfile->print_output_data(this, _("** save/restore")); } | |
5902 | ||
5903 | void | |
5904 | do_write(Output_file*); | |
5905 | ||
5906 | private: | |
5907 | // The maximum size of save/restore contents. | |
5908 | static const unsigned int savres_max = 218*4; | |
5909 | ||
5910 | void | |
5911 | savres_define(Symbol_table* symtab, | |
5912 | const char *name, | |
5913 | unsigned int lo, unsigned int hi, | |
5914 | unsigned char* write_ent(unsigned char*, int), | |
5915 | unsigned char* write_tail(unsigned char*, int)); | |
5916 | ||
5917 | unsigned char *contents_; | |
5918 | }; | |
5919 | ||
5920 | template<bool big_endian> | |
5921 | static unsigned char* | |
5922 | savegpr0(unsigned char* p, int r) | |
5923 | { | |
5924 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5925 | write_insn<big_endian>(p, insn); | |
5926 | return p + 4; | |
5927 | } | |
5928 | ||
5929 | template<bool big_endian> | |
5930 | static unsigned char* | |
5931 | savegpr0_tail(unsigned char* p, int r) | |
5932 | { | |
5933 | p = savegpr0<big_endian>(p, r); | |
5934 | uint32_t insn = std_0_1 + 16; | |
5935 | write_insn<big_endian>(p, insn); | |
5936 | p = p + 4; | |
5937 | write_insn<big_endian>(p, blr); | |
5938 | return p + 4; | |
5939 | } | |
5940 | ||
5941 | template<bool big_endian> | |
62fe925a | 5942 | static unsigned char* |
f3a0ed29 AM |
5943 | restgpr0(unsigned char* p, int r) |
5944 | { | |
5945 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5946 | write_insn<big_endian>(p, insn); | |
5947 | return p + 4; | |
5948 | } | |
5949 | ||
5950 | template<bool big_endian> | |
62fe925a | 5951 | static unsigned char* |
f3a0ed29 AM |
5952 | restgpr0_tail(unsigned char* p, int r) |
5953 | { | |
5954 | uint32_t insn = ld_0_1 + 16; | |
5955 | write_insn<big_endian>(p, insn); | |
5956 | p = p + 4; | |
5957 | p = restgpr0<big_endian>(p, r); | |
5958 | write_insn<big_endian>(p, mtlr_0); | |
5959 | p = p + 4; | |
5960 | if (r == 29) | |
5961 | { | |
5962 | p = restgpr0<big_endian>(p, 30); | |
5963 | p = restgpr0<big_endian>(p, 31); | |
5964 | } | |
5965 | write_insn<big_endian>(p, blr); | |
5966 | return p + 4; | |
5967 | } | |
5968 | ||
5969 | template<bool big_endian> | |
62fe925a | 5970 | static unsigned char* |
f3a0ed29 AM |
5971 | savegpr1(unsigned char* p, int r) |
5972 | { | |
5973 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5974 | write_insn<big_endian>(p, insn); | |
5975 | return p + 4; | |
5976 | } | |
5977 | ||
5978 | template<bool big_endian> | |
62fe925a | 5979 | static unsigned char* |
f3a0ed29 AM |
5980 | savegpr1_tail(unsigned char* p, int r) |
5981 | { | |
5982 | p = savegpr1<big_endian>(p, r); | |
5983 | write_insn<big_endian>(p, blr); | |
5984 | return p + 4; | |
5985 | } | |
5986 | ||
5987 | template<bool big_endian> | |
62fe925a | 5988 | static unsigned char* |
f3a0ed29 AM |
5989 | restgpr1(unsigned char* p, int r) |
5990 | { | |
5991 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5992 | write_insn<big_endian>(p, insn); | |
5993 | return p + 4; | |
5994 | } | |
5995 | ||
5996 | template<bool big_endian> | |
62fe925a | 5997 | static unsigned char* |
f3a0ed29 AM |
5998 | restgpr1_tail(unsigned char* p, int r) |
5999 | { | |
6000 | p = restgpr1<big_endian>(p, r); | |
6001 | write_insn<big_endian>(p, blr); | |
6002 | return p + 4; | |
6003 | } | |
6004 | ||
6005 | template<bool big_endian> | |
62fe925a | 6006 | static unsigned char* |
f3a0ed29 AM |
6007 | savefpr(unsigned char* p, int r) |
6008 | { | |
6009 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6010 | write_insn<big_endian>(p, insn); | |
6011 | return p + 4; | |
6012 | } | |
6013 | ||
6014 | template<bool big_endian> | |
62fe925a | 6015 | static unsigned char* |
f3a0ed29 AM |
6016 | savefpr0_tail(unsigned char* p, int r) |
6017 | { | |
6018 | p = savefpr<big_endian>(p, r); | |
6019 | write_insn<big_endian>(p, std_0_1 + 16); | |
6020 | p = p + 4; | |
6021 | write_insn<big_endian>(p, blr); | |
6022 | return p + 4; | |
6023 | } | |
6024 | ||
6025 | template<bool big_endian> | |
62fe925a | 6026 | static unsigned char* |
f3a0ed29 AM |
6027 | restfpr(unsigned char* p, int r) |
6028 | { | |
6029 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6030 | write_insn<big_endian>(p, insn); | |
6031 | return p + 4; | |
6032 | } | |
6033 | ||
6034 | template<bool big_endian> | |
62fe925a | 6035 | static unsigned char* |
f3a0ed29 AM |
6036 | restfpr0_tail(unsigned char* p, int r) |
6037 | { | |
6038 | write_insn<big_endian>(p, ld_0_1 + 16); | |
6039 | p = p + 4; | |
6040 | p = restfpr<big_endian>(p, r); | |
6041 | write_insn<big_endian>(p, mtlr_0); | |
6042 | p = p + 4; | |
6043 | if (r == 29) | |
6044 | { | |
6045 | p = restfpr<big_endian>(p, 30); | |
6046 | p = restfpr<big_endian>(p, 31); | |
6047 | } | |
6048 | write_insn<big_endian>(p, blr); | |
6049 | return p + 4; | |
6050 | } | |
6051 | ||
6052 | template<bool big_endian> | |
62fe925a | 6053 | static unsigned char* |
f3a0ed29 AM |
6054 | savefpr1_tail(unsigned char* p, int r) |
6055 | { | |
6056 | p = savefpr<big_endian>(p, r); | |
6057 | write_insn<big_endian>(p, blr); | |
6058 | return p + 4; | |
6059 | } | |
6060 | ||
6061 | template<bool big_endian> | |
62fe925a | 6062 | static unsigned char* |
f3a0ed29 AM |
6063 | restfpr1_tail(unsigned char* p, int r) |
6064 | { | |
6065 | p = restfpr<big_endian>(p, r); | |
6066 | write_insn<big_endian>(p, blr); | |
6067 | return p + 4; | |
6068 | } | |
6069 | ||
6070 | template<bool big_endian> | |
62fe925a | 6071 | static unsigned char* |
f3a0ed29 AM |
6072 | savevr(unsigned char* p, int r) |
6073 | { | |
6074 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
6075 | write_insn<big_endian>(p, insn); | |
6076 | p = p + 4; | |
6077 | insn = stvx_0_12_0 + (r << 21); | |
6078 | write_insn<big_endian>(p, insn); | |
6079 | return p + 4; | |
6080 | } | |
6081 | ||
6082 | template<bool big_endian> | |
62fe925a | 6083 | static unsigned char* |
f3a0ed29 AM |
6084 | savevr_tail(unsigned char* p, int r) |
6085 | { | |
6086 | p = savevr<big_endian>(p, r); | |
6087 | write_insn<big_endian>(p, blr); | |
6088 | return p + 4; | |
6089 | } | |
6090 | ||
6091 | template<bool big_endian> | |
62fe925a | 6092 | static unsigned char* |
f3a0ed29 AM |
6093 | restvr(unsigned char* p, int r) |
6094 | { | |
6095 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
6096 | write_insn<big_endian>(p, insn); | |
6097 | p = p + 4; | |
6098 | insn = lvx_0_12_0 + (r << 21); | |
6099 | write_insn<big_endian>(p, insn); | |
6100 | return p + 4; | |
6101 | } | |
6102 | ||
6103 | template<bool big_endian> | |
62fe925a | 6104 | static unsigned char* |
f3a0ed29 AM |
6105 | restvr_tail(unsigned char* p, int r) |
6106 | { | |
6107 | p = restvr<big_endian>(p, r); | |
6108 | write_insn<big_endian>(p, blr); | |
6109 | return p + 4; | |
6110 | } | |
6111 | ||
6112 | ||
6113 | template<int size, bool big_endian> | |
6114 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
6115 | Symbol_table* symtab) | |
6116 | : Output_section_data_build(4), | |
6117 | contents_(NULL) | |
6118 | { | |
6119 | this->savres_define(symtab, | |
6120 | "_savegpr0_", 14, 31, | |
6121 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
6122 | this->savres_define(symtab, | |
6123 | "_restgpr0_", 14, 29, | |
6124 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6125 | this->savres_define(symtab, | |
6126 | "_restgpr0_", 30, 31, | |
6127 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6128 | this->savres_define(symtab, | |
6129 | "_savegpr1_", 14, 31, | |
6130 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
6131 | this->savres_define(symtab, | |
6132 | "_restgpr1_", 14, 31, | |
6133 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
6134 | this->savres_define(symtab, | |
6135 | "_savefpr_", 14, 31, | |
6136 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
6137 | this->savres_define(symtab, | |
6138 | "_restfpr_", 14, 29, | |
6139 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6140 | this->savres_define(symtab, | |
6141 | "_restfpr_", 30, 31, | |
6142 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6143 | this->savres_define(symtab, | |
6144 | "._savef", 14, 31, | |
6145 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
6146 | this->savres_define(symtab, | |
6147 | "._restf", 14, 31, | |
6148 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
6149 | this->savres_define(symtab, | |
6150 | "_savevr_", 20, 31, | |
6151 | savevr<big_endian>, savevr_tail<big_endian>); | |
6152 | this->savres_define(symtab, | |
6153 | "_restvr_", 20, 31, | |
6154 | restvr<big_endian>, restvr_tail<big_endian>); | |
6155 | } | |
6156 | ||
6157 | template<int size, bool big_endian> | |
6158 | void | |
6159 | Output_data_save_res<size, big_endian>::savres_define( | |
6160 | Symbol_table* symtab, | |
6161 | const char *name, | |
6162 | unsigned int lo, unsigned int hi, | |
6163 | unsigned char* write_ent(unsigned char*, int), | |
6164 | unsigned char* write_tail(unsigned char*, int)) | |
6165 | { | |
6166 | size_t len = strlen(name); | |
6167 | bool writing = false; | |
6168 | char sym[16]; | |
6169 | ||
6170 | memcpy(sym, name, len); | |
6171 | sym[len + 2] = 0; | |
6172 | ||
6173 | for (unsigned int i = lo; i <= hi; i++) | |
6174 | { | |
6175 | sym[len + 0] = i / 10 + '0'; | |
6176 | sym[len + 1] = i % 10 + '0'; | |
6177 | Symbol* gsym = symtab->lookup(sym); | |
6178 | bool refd = gsym != NULL && gsym->is_undefined(); | |
6179 | writing = writing || refd; | |
6180 | if (writing) | |
6181 | { | |
6182 | if (this->contents_ == NULL) | |
6183 | this->contents_ = new unsigned char[this->savres_max]; | |
6184 | ||
ec661b9d | 6185 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
6186 | unsigned char* p = this->contents_ + value; |
6187 | if (i != hi) | |
6188 | p = write_ent(p, i); | |
6189 | else | |
6190 | p = write_tail(p, i); | |
ec661b9d | 6191 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
6192 | this->set_current_data_size(cur_size); |
6193 | if (refd) | |
6194 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
6195 | this, value, cur_size - value, | |
6196 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
6197 | elfcpp::STV_HIDDEN, 0, false, false); | |
6198 | } | |
6199 | } | |
6200 | } | |
6201 | ||
6202 | // Write out save/restore. | |
6203 | ||
6204 | template<int size, bool big_endian> | |
6205 | void | |
6206 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
6207 | { | |
ec661b9d | 6208 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
6209 | const section_size_type oview_size = |
6210 | convert_to_section_size_type(this->data_size()); | |
6211 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
6212 | memcpy(oview, this->contents_, oview_size); | |
6213 | of->write_output_view(off, oview_size, oview); | |
6214 | } | |
6215 | ||
6216 | ||
cf43a2fe | 6217 | // Create the glink section. |
42cacb20 | 6218 | |
cf43a2fe AM |
6219 | template<int size, bool big_endian> |
6220 | void | |
6221 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
6222 | { | |
6223 | if (this->glink_ == NULL) | |
6224 | { | |
6225 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 6226 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
6227 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
6228 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
6229 | this->glink_, ORDER_TEXT, false); | |
6230 | } | |
42cacb20 DE |
6231 | } |
6232 | ||
6233 | // Create a PLT entry for a global symbol. | |
6234 | ||
6235 | template<int size, bool big_endian> | |
6236 | void | |
ec661b9d AM |
6237 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
6238 | Layout* layout, | |
6239 | Symbol* gsym) | |
42cacb20 | 6240 | { |
e5d5f5ed AM |
6241 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
6242 | && gsym->can_use_relative_reloc(false)) | |
6243 | { | |
6244 | if (this->iplt_ == NULL) | |
40b469d7 | 6245 | this->make_iplt_section(symtab, layout); |
03e25981 | 6246 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
6247 | } |
6248 | else | |
6249 | { | |
6250 | if (this->plt_ == NULL) | |
40b469d7 | 6251 | this->make_plt_section(symtab, layout); |
03e25981 | 6252 | this->plt_->add_entry(gsym); |
e5d5f5ed | 6253 | } |
e5d5f5ed | 6254 | } |
42cacb20 | 6255 | |
2d7ad24e AM |
6256 | // Make a PLT entry for a local symbol. |
6257 | ||
6258 | template<int size, bool big_endian> | |
6259 | void | |
6260 | Target_powerpc<size, big_endian>::make_local_plt_entry( | |
6261 | Layout* layout, | |
6262 | Sized_relobj_file<size, big_endian>* relobj, | |
6263 | unsigned int r_sym) | |
6264 | { | |
6265 | if (this->lplt_ == NULL) | |
6266 | this->make_lplt_section(layout); | |
6267 | this->lplt_->add_local_entry(relobj, r_sym); | |
6268 | } | |
6269 | ||
e5d5f5ed | 6270 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 6271 | |
e5d5f5ed AM |
6272 | template<int size, bool big_endian> |
6273 | void | |
6274 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 6275 | Symbol_table* symtab, |
e5d5f5ed | 6276 | Layout* layout, |
ec661b9d AM |
6277 | Sized_relobj_file<size, big_endian>* relobj, |
6278 | unsigned int r_sym) | |
e5d5f5ed AM |
6279 | { |
6280 | if (this->iplt_ == NULL) | |
40b469d7 | 6281 | this->make_iplt_section(symtab, layout); |
03e25981 | 6282 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
6283 | } |
6284 | ||
0e70b911 CC |
6285 | // Return the number of entries in the PLT. |
6286 | ||
6287 | template<int size, bool big_endian> | |
6288 | unsigned int | |
6289 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
6290 | { | |
6291 | if (this->plt_ == NULL) | |
6292 | return 0; | |
b3ccdeb5 | 6293 | return this->plt_->entry_count(); |
0e70b911 CC |
6294 | } |
6295 | ||
dd93cd0a | 6296 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
6297 | |
6298 | template<int size, bool big_endian> | |
6299 | unsigned int | |
dd93cd0a | 6300 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
6301 | Symbol_table* symtab, |
6302 | Layout* layout, | |
6303 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 6304 | { |
dd93cd0a | 6305 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
6306 | { |
6307 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
6308 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
6309 | Output_data_got_powerpc<size, big_endian>* got |
6310 | = this->got_section(symtab, layout); | |
6311 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
6312 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
6313 | got_offset, 0); | |
dd93cd0a | 6314 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 6315 | } |
dd93cd0a | 6316 | return this->tlsld_got_offset_; |
42cacb20 DE |
6317 | } |
6318 | ||
95a2c8d6 RS |
6319 | // Get the Reference_flags for a particular relocation. |
6320 | ||
6321 | template<int size, bool big_endian> | |
6322 | int | |
88b8e639 AM |
6323 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
6324 | unsigned int r_type, | |
6325 | const Target_powerpc* target) | |
95a2c8d6 | 6326 | { |
88b8e639 AM |
6327 | int ref = 0; |
6328 | ||
95a2c8d6 RS |
6329 | switch (r_type) |
6330 | { | |
6331 | case elfcpp::R_POWERPC_NONE: | |
6332 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6333 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6334 | case elfcpp::R_PPC64_TOC: | |
6335 | // No symbol reference. | |
88b8e639 | 6336 | break; |
95a2c8d6 | 6337 | |
dd93cd0a AM |
6338 | case elfcpp::R_PPC64_ADDR64: |
6339 | case elfcpp::R_PPC64_UADDR64: | |
6340 | case elfcpp::R_POWERPC_ADDR32: | |
6341 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 6342 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 6343 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
6344 | case elfcpp::R_POWERPC_ADDR16_LO: |
6345 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6346 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
6347 | ref = Symbol::ABSOLUTE_REF; |
6348 | break; | |
95a2c8d6 | 6349 | |
dd93cd0a AM |
6350 | case elfcpp::R_POWERPC_ADDR24: |
6351 | case elfcpp::R_POWERPC_ADDR14: | |
6352 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6353 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
6354 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
6355 | break; | |
dd93cd0a | 6356 | |
e5d5f5ed | 6357 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6358 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 6359 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
6360 | case elfcpp::R_POWERPC_REL16: |
6361 | case elfcpp::R_POWERPC_REL16_LO: | |
6362 | case elfcpp::R_POWERPC_REL16_HI: | |
6363 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
6364 | ref = Symbol::RELATIVE_REF; |
6365 | break; | |
95a2c8d6 | 6366 | |
dd93cd0a | 6367 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 6368 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
6369 | case elfcpp::R_POWERPC_REL14: |
6370 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6371 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
6372 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
6373 | break; | |
95a2c8d6 RS |
6374 | |
6375 | case elfcpp::R_POWERPC_GOT16: | |
6376 | case elfcpp::R_POWERPC_GOT16_LO: | |
6377 | case elfcpp::R_POWERPC_GOT16_HI: | |
6378 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
6379 | case elfcpp::R_PPC64_GOT16_DS: |
6380 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
6381 | case elfcpp::R_PPC64_TOC16: |
6382 | case elfcpp::R_PPC64_TOC16_LO: | |
6383 | case elfcpp::R_PPC64_TOC16_HI: | |
6384 | case elfcpp::R_PPC64_TOC16_HA: | |
6385 | case elfcpp::R_PPC64_TOC16_DS: | |
6386 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
08be3224 AM |
6387 | case elfcpp::R_POWERPC_PLT16_LO: |
6388 | case elfcpp::R_POWERPC_PLT16_HI: | |
6389 | case elfcpp::R_POWERPC_PLT16_HA: | |
6390 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
32d849b3 | 6391 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 6392 | break; |
95a2c8d6 RS |
6393 | |
6394 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6395 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
6396 | ref = Symbol::TLS_REF; |
6397 | break; | |
95a2c8d6 RS |
6398 | |
6399 | case elfcpp::R_POWERPC_COPY: | |
6400 | case elfcpp::R_POWERPC_GLOB_DAT: | |
6401 | case elfcpp::R_POWERPC_JMP_SLOT: | |
6402 | case elfcpp::R_POWERPC_RELATIVE: | |
6403 | case elfcpp::R_POWERPC_DTPMOD: | |
6404 | default: | |
6405 | // Not expected. We will give an error later. | |
88b8e639 | 6406 | break; |
95a2c8d6 | 6407 | } |
88b8e639 AM |
6408 | |
6409 | if (size == 64 && target->abiversion() < 2) | |
6410 | ref |= Symbol::FUNC_DESC_ABI; | |
6411 | return ref; | |
95a2c8d6 RS |
6412 | } |
6413 | ||
42cacb20 DE |
6414 | // Report an unsupported relocation against a local symbol. |
6415 | ||
6416 | template<int size, bool big_endian> | |
6417 | void | |
6418 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
6419 | Sized_relobj_file<size, big_endian>* object, |
6420 | unsigned int r_type) | |
42cacb20 DE |
6421 | { |
6422 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
6423 | object->name().c_str(), r_type); | |
6424 | } | |
6425 | ||
6426 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
6427 | // dynamic linker does not support it, issue an error. | |
6428 | ||
6429 | template<int size, bool big_endian> | |
6430 | void | |
6431 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
6432 | unsigned int r_type) | |
6433 | { | |
6434 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
6435 | ||
6436 | // These are the relocation types supported by glibc for both 32-bit | |
6437 | // and 64-bit powerpc. | |
6438 | switch (r_type) | |
6439 | { | |
3ea0a085 | 6440 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
6441 | case elfcpp::R_POWERPC_RELATIVE: |
6442 | case elfcpp::R_POWERPC_GLOB_DAT: | |
6443 | case elfcpp::R_POWERPC_DTPMOD: | |
6444 | case elfcpp::R_POWERPC_DTPREL: | |
6445 | case elfcpp::R_POWERPC_TPREL: | |
6446 | case elfcpp::R_POWERPC_JMP_SLOT: | |
6447 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 6448 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 6449 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 6450 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 6451 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
6452 | case elfcpp::R_POWERPC_ADDR16: |
6453 | case elfcpp::R_POWERPC_UADDR16: | |
6454 | case elfcpp::R_POWERPC_ADDR16_LO: | |
6455 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6456 | case elfcpp::R_POWERPC_ADDR16_HA: | |
6457 | case elfcpp::R_POWERPC_ADDR14: | |
6458 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6459 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
6460 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 6461 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
6462 | case elfcpp::R_POWERPC_TPREL16: |
6463 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6464 | case elfcpp::R_POWERPC_TPREL16_HI: | |
6465 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
6466 | return; |
6467 | ||
6468 | default: | |
6469 | break; | |
6470 | } | |
6471 | ||
6472 | if (size == 64) | |
6473 | { | |
6474 | switch (r_type) | |
6475 | { | |
6476 | // These are the relocation types supported only on 64-bit. | |
6477 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 6478 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 6479 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 6480 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 6481 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
6482 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6483 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
6484 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6485 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6486 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6487 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 6488 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
6489 | case elfcpp::R_POWERPC_ADDR30: |
6490 | case elfcpp::R_PPC64_TPREL16_DS: | |
6491 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6492 | case elfcpp::R_PPC64_TPREL16_HIGH: |
6493 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
6494 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
6495 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
6496 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
6497 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
6498 | return; |
6499 | ||
6500 | default: | |
6501 | break; | |
6502 | } | |
6503 | } | |
6504 | else | |
6505 | { | |
6506 | switch (r_type) | |
6507 | { | |
6508 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
6509 | // ??? glibc ld.so doesn't need to support these. |
6510 | case elfcpp::R_POWERPC_DTPREL16: | |
6511 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6512 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6513 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
6514 | return; | |
42cacb20 DE |
6515 | |
6516 | default: | |
6517 | break; | |
6518 | } | |
6519 | } | |
6520 | ||
6521 | // This prevents us from issuing more than one error per reloc | |
6522 | // section. But we can still wind up issuing more than one | |
6523 | // error per object file. | |
6524 | if (this->issued_non_pic_error_) | |
6525 | return; | |
33aea2fd | 6526 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
6527 | object->error(_("requires unsupported dynamic reloc; " |
6528 | "recompile with -fPIC")); | |
6529 | this->issued_non_pic_error_ = true; | |
6530 | return; | |
6531 | } | |
6532 | ||
e5d5f5ed AM |
6533 | // Return whether we need to make a PLT entry for a relocation of the |
6534 | // given type against a STT_GNU_IFUNC symbol. | |
6535 | ||
6536 | template<int size, bool big_endian> | |
6537 | bool | |
6538 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 6539 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 6540 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
6541 | unsigned int r_type, |
6542 | bool report_err) | |
e5d5f5ed | 6543 | { |
c9824451 AM |
6544 | // In non-pic code any reference will resolve to the plt call stub |
6545 | // for the ifunc symbol. | |
9055360d AM |
6546 | if ((size == 32 || target->abiversion() >= 2) |
6547 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
6548 | return true; |
6549 | ||
e5d5f5ed AM |
6550 | switch (r_type) |
6551 | { | |
b3ccdeb5 | 6552 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
6553 | case elfcpp::R_POWERPC_ADDR32: |
6554 | case elfcpp::R_POWERPC_UADDR32: | |
6555 | if (size == 32) | |
b3ccdeb5 | 6556 | return false; |
e5d5f5ed AM |
6557 | break; |
6558 | ||
6559 | case elfcpp::R_PPC64_ADDR64: | |
6560 | case elfcpp::R_PPC64_UADDR64: | |
6561 | if (size == 64) | |
b3ccdeb5 | 6562 | return false; |
e5d5f5ed AM |
6563 | break; |
6564 | ||
b3ccdeb5 | 6565 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
6566 | case elfcpp::R_POWERPC_GOT16: |
6567 | case elfcpp::R_POWERPC_GOT16_LO: | |
6568 | case elfcpp::R_POWERPC_GOT16_HI: | |
6569 | case elfcpp::R_POWERPC_GOT16_HA: | |
6570 | case elfcpp::R_PPC64_GOT16_DS: | |
6571 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 6572 | return false; |
e5d5f5ed | 6573 | |
08be3224 AM |
6574 | // PLT relocs are OK and need a PLT entry. |
6575 | case elfcpp::R_POWERPC_PLT16_LO: | |
6576 | case elfcpp::R_POWERPC_PLT16_HI: | |
6577 | case elfcpp::R_POWERPC_PLT16_HA: | |
6578 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
23cedd1d AM |
6579 | case elfcpp::R_POWERPC_PLTSEQ: |
6580 | case elfcpp::R_POWERPC_PLTCALL: | |
08be3224 AM |
6581 | return true; |
6582 | break; | |
6583 | ||
b3ccdeb5 | 6584 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
6585 | case elfcpp::R_POWERPC_ADDR24: |
6586 | case elfcpp::R_POWERPC_ADDR14: | |
6587 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6588 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
6589 | case elfcpp::R_POWERPC_REL24: | |
6590 | case elfcpp::R_PPC_PLTREL24: | |
6591 | case elfcpp::R_POWERPC_REL14: | |
6592 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6593 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
6594 | return true; | |
6595 | ||
6596 | default: | |
6597 | break; | |
6598 | } | |
6599 | ||
6600 | // Anything else is a problem. | |
6601 | // If we are building a static executable, the libc startup function | |
6602 | // responsible for applying indirect function relocations is going | |
6603 | // to complain about the reloc type. | |
6604 | // If we are building a dynamic executable, we will have a text | |
6605 | // relocation. The dynamic loader will set the text segment | |
6606 | // writable and non-executable to apply text relocations. So we'll | |
6607 | // segfault when trying to run the indirection function to resolve | |
6608 | // the reloc. | |
b3ccdeb5 AM |
6609 | if (report_err) |
6610 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
6611 | object->name().c_str(), r_type); |
6612 | return false; | |
6613 | } | |
6614 | ||
5edad15d AM |
6615 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6616 | // reloc. | |
6617 | ||
6618 | static bool | |
6619 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
6620 | { | |
6621 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
6622 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6623 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6624 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6625 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6626 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6627 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6628 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6629 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6630 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6631 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6632 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6633 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6634 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6635 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6636 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
6637 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
6638 | /* Exclude lfqu by testing reloc. If relocs are ever | |
6639 | defined for the reduced D field in psq_lu then those | |
6640 | will need testing too. */ | |
6641 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6642 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6643 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
6644 | && (insn & 1) == 0) | |
6645 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
6646 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
6647 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
6648 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6649 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6650 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
6651 | && (insn & 1) == 0)); | |
6652 | } | |
6653 | ||
42cacb20 DE |
6654 | // Scan a relocation for a local symbol. |
6655 | ||
6656 | template<int size, bool big_endian> | |
6657 | inline void | |
6658 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
6659 | Symbol_table* symtab, |
6660 | Layout* layout, | |
6661 | Target_powerpc<size, big_endian>* target, | |
6662 | Sized_relobj_file<size, big_endian>* object, | |
6663 | unsigned int data_shndx, | |
6664 | Output_section* output_section, | |
6665 | const elfcpp::Rela<size, big_endian>& reloc, | |
6666 | unsigned int r_type, | |
e5d5f5ed | 6667 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 6668 | bool is_discarded) |
42cacb20 | 6669 | { |
34e0882b | 6670 | this->maybe_skip_tls_get_addr_call(target, r_type, NULL); |
e3deeb9c AM |
6671 | |
6672 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
6673 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
6674 | { | |
6675 | this->expect_tls_get_addr_call(); | |
6676 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6677 | if (tls_type != tls::TLSOPT_NONE) | |
6678 | this->skip_next_tls_get_addr_call(); | |
6679 | } | |
6680 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
6681 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
6682 | { | |
6683 | this->expect_tls_get_addr_call(); | |
6684 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6685 | if (tls_type != tls::TLSOPT_NONE) | |
6686 | this->skip_next_tls_get_addr_call(); | |
6687 | } | |
6688 | ||
dd93cd0a AM |
6689 | Powerpc_relobj<size, big_endian>* ppc_object |
6690 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6691 | ||
bfdfa4cd AM |
6692 | if (is_discarded) |
6693 | { | |
6694 | if (size == 64 | |
6695 | && data_shndx == ppc_object->opd_shndx() | |
6696 | && r_type == elfcpp::R_PPC64_ADDR64) | |
6697 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
6698 | return; | |
6699 | } | |
6700 | ||
e5d5f5ed AM |
6701 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
6702 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 6703 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 6704 | { |
ec661b9d AM |
6705 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
6706 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6707 | r_type, r_sym, reloc.get_r_addend()); | |
6708 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 6709 | } |
e5d5f5ed | 6710 | |
42cacb20 DE |
6711 | switch (r_type) |
6712 | { | |
6713 | case elfcpp::R_POWERPC_NONE: | |
6714 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6715 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 6716 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 6717 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
6718 | case elfcpp::R_POWERPC_PLTSEQ: |
6719 | case elfcpp::R_POWERPC_PLTCALL: | |
dd93cd0a AM |
6720 | break; |
6721 | ||
6722 | case elfcpp::R_PPC64_TOC: | |
6723 | { | |
6724 | Output_data_got_powerpc<size, big_endian>* got | |
6725 | = target->got_section(symtab, layout); | |
6726 | if (parameters->options().output_is_position_independent()) | |
6727 | { | |
bfdfa4cd AM |
6728 | Address off = reloc.get_r_offset(); |
6729 | if (size == 64 | |
9055360d | 6730 | && target->abiversion() < 2 |
bfdfa4cd AM |
6731 | && data_shndx == ppc_object->opd_shndx() |
6732 | && ppc_object->get_opd_discard(off - 8)) | |
6733 | break; | |
6734 | ||
dd93cd0a | 6735 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 6736 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
6737 | rela_dyn->add_output_section_relative(got->output_section(), |
6738 | elfcpp::R_POWERPC_RELATIVE, | |
6739 | output_section, | |
bfdfa4cd AM |
6740 | object, data_shndx, off, |
6741 | symobj->toc_base_offset()); | |
dd93cd0a AM |
6742 | } |
6743 | } | |
42cacb20 DE |
6744 | break; |
6745 | ||
6746 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 6747 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 6748 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
6749 | case elfcpp::R_POWERPC_UADDR32: |
6750 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 6751 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 6752 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
6753 | case elfcpp::R_POWERPC_ADDR16_HI: |
6754 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 6755 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
6756 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6757 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6758 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6759 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6760 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6761 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6762 | case elfcpp::R_PPC64_ADDR16_DS: | |
6763 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6764 | case elfcpp::R_POWERPC_ADDR14: | |
6765 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6766 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
6767 | // If building a shared library (or a position-independent |
6768 | // executable), we need to create a dynamic relocation for | |
6769 | // this location. | |
c9824451 | 6770 | if (parameters->options().output_is_position_independent() |
9055360d | 6771 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 6772 | { |
b3ccdeb5 AM |
6773 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6774 | is_ifunc); | |
1f98a074 | 6775 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
6776 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
6777 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 6778 | { |
b3ccdeb5 AM |
6779 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6780 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6781 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
6782 | output_section, data_shndx, |
6783 | reloc.get_r_offset(), | |
c9824451 | 6784 | reloc.get_r_addend(), false); |
2e702c99 | 6785 | } |
1f98a074 | 6786 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 6787 | { |
dd93cd0a | 6788 | check_non_pic(object, r_type); |
dd93cd0a AM |
6789 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
6790 | data_shndx, reloc.get_r_offset(), | |
6791 | reloc.get_r_addend()); | |
2e702c99 | 6792 | } |
1f98a074 AM |
6793 | else |
6794 | { | |
6795 | gold_assert(lsym.get_st_value() == 0); | |
6796 | unsigned int shndx = lsym.get_st_shndx(); | |
6797 | bool is_ordinary; | |
6798 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
6799 | &is_ordinary); | |
6800 | if (!is_ordinary) | |
6801 | object->error(_("section symbol %u has bad shndx %u"), | |
6802 | r_sym, shndx); | |
6803 | else | |
6804 | rela_dyn->add_local_section(object, shndx, r_type, | |
6805 | output_section, data_shndx, | |
6806 | reloc.get_r_offset()); | |
6807 | } | |
2e702c99 | 6808 | } |
42cacb20 DE |
6809 | break; |
6810 | ||
2d7ad24e AM |
6811 | case elfcpp::R_POWERPC_PLT16_LO: |
6812 | case elfcpp::R_POWERPC_PLT16_HI: | |
6813 | case elfcpp::R_POWERPC_PLT16_HA: | |
6814 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
6815 | if (!is_ifunc) | |
6816 | { | |
6817 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6818 | target->make_local_plt_entry(layout, object, r_sym); | |
6819 | } | |
6820 | break; | |
6821 | ||
42cacb20 | 6822 | case elfcpp::R_POWERPC_REL24: |
c9824451 | 6823 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6824 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
6825 | case elfcpp::R_POWERPC_REL14: |
6826 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6827 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 6828 | if (!is_ifunc) |
0e123f69 AM |
6829 | { |
6830 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6831 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6832 | r_type, r_sym, reloc.get_r_addend()); | |
6833 | } | |
ec661b9d AM |
6834 | break; |
6835 | ||
7e57d19e AM |
6836 | case elfcpp::R_PPC64_TOCSAVE: |
6837 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
6838 | // caller has already saved r2 and thus a plt call stub need not | |
6839 | // save r2. | |
6840 | if (size == 64 | |
6841 | && target->mark_pltcall(ppc_object, data_shndx, | |
6842 | reloc.get_r_offset() - 4, symtab)) | |
6843 | { | |
6844 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6845 | unsigned int shndx = lsym.get_st_shndx(); | |
6846 | bool is_ordinary; | |
6847 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
6848 | if (!is_ordinary) | |
6849 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
6850 | r_sym, shndx); | |
6851 | else | |
6852 | target->add_tocsave(ppc_object, shndx, | |
6853 | lsym.get_st_value() + reloc.get_r_addend()); | |
6854 | } | |
6855 | break; | |
6856 | ||
ec661b9d AM |
6857 | case elfcpp::R_PPC64_REL64: |
6858 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 6859 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 6860 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 6861 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 6862 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 6863 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 6864 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6865 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6866 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6867 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6868 | case elfcpp::R_PPC64_SECTOFF_DS: |
6869 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6870 | case elfcpp::R_POWERPC_TPREL16: | |
6871 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6872 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6873 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6874 | case elfcpp::R_PPC64_TPREL16_DS: |
6875 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6876 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6877 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6878 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6879 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6880 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6881 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6882 | case elfcpp::R_POWERPC_DTPREL16: |
6883 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6884 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6885 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6886 | case elfcpp::R_PPC64_DTPREL16_DS: |
6887 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6888 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6889 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6890 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6891 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6892 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6893 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6894 | case elfcpp::R_PPC64_TLSGD: |
6895 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6896 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
6897 | break; |
6898 | ||
6899 | case elfcpp::R_POWERPC_GOT16: | |
6900 | case elfcpp::R_POWERPC_GOT16_LO: | |
6901 | case elfcpp::R_POWERPC_GOT16_HI: | |
6902 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6903 | case elfcpp::R_PPC64_GOT16_DS: |
6904 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6905 | { |
c9269dff | 6906 | // The symbol requires a GOT entry. |
dd93cd0a AM |
6907 | Output_data_got_powerpc<size, big_endian>* got |
6908 | = target->got_section(symtab, layout); | |
6909 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 6910 | |
e5d5f5ed | 6911 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 6912 | { |
b01a4b04 AM |
6913 | if (is_ifunc |
6914 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6915 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
6916 | else | |
6917 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
6918 | } | |
6919 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
6920 | { | |
6921 | // If we are generating a shared object or a pie, this | |
6922 | // symbol's GOT entry will be set by a dynamic relocation. | |
6923 | unsigned int off; | |
6924 | off = got->add_constant(0); | |
6925 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 6926 | |
b3ccdeb5 AM |
6927 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6928 | is_ifunc); | |
6929 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6930 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6931 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 6932 | got, off, 0, false); |
2e702c99 | 6933 | } |
42cacb20 DE |
6934 | } |
6935 | break; | |
6936 | ||
cf43a2fe AM |
6937 | case elfcpp::R_PPC64_TOC16: |
6938 | case elfcpp::R_PPC64_TOC16_LO: | |
6939 | case elfcpp::R_PPC64_TOC16_HI: | |
6940 | case elfcpp::R_PPC64_TOC16_HA: | |
6941 | case elfcpp::R_PPC64_TOC16_DS: | |
6942 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6943 | // We need a GOT section. |
6944 | target->got_section(symtab, layout); | |
6945 | break; | |
6946 | ||
dd93cd0a AM |
6947 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6948 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6949 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6950 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6951 | { | |
6952 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6953 | if (tls_type == tls::TLSOPT_NONE) | |
6954 | { | |
6955 | Output_data_got_powerpc<size, big_endian>* got | |
6956 | = target->got_section(symtab, layout); | |
6957 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
6958 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6959 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
6960 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
6961 | } |
6962 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6963 | { | |
6964 | // no GOT relocs needed for Local Exec. | |
6965 | } | |
6966 | else | |
6967 | gold_unreachable(); | |
6968 | } | |
42cacb20 DE |
6969 | break; |
6970 | ||
dd93cd0a AM |
6971 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6972 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6973 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6974 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6975 | { | |
6976 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6977 | if (tls_type == tls::TLSOPT_NONE) | |
6978 | target->tlsld_got_offset(symtab, layout, object); | |
6979 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6980 | { | |
6981 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6982 | if (parameters->options().emit_relocs()) |
6983 | { | |
6984 | Output_section* os = layout->tls_segment()->first_section(); | |
6985 | gold_assert(os != NULL); | |
6986 | os->set_needs_symtab_index(); | |
6987 | } | |
dd93cd0a AM |
6988 | } |
6989 | else | |
6990 | gold_unreachable(); | |
6991 | } | |
42cacb20 | 6992 | break; |
42cacb20 | 6993 | |
dd93cd0a AM |
6994 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
6995 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6996 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6997 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6998 | { | |
6999 | Output_data_got_powerpc<size, big_endian>* got | |
7000 | = target->got_section(symtab, layout); | |
7001 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 7002 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
7003 | } |
7004 | break; | |
42cacb20 | 7005 | |
dd93cd0a AM |
7006 | case elfcpp::R_POWERPC_GOT_TPREL16: |
7007 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7008 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7009 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7010 | { | |
7011 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
7012 | if (tls_type == tls::TLSOPT_NONE) | |
7013 | { | |
dd93cd0a | 7014 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
7015 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
7016 | { | |
7017 | Output_data_got_powerpc<size, big_endian>* got | |
7018 | = target->got_section(symtab, layout); | |
7019 | unsigned int off = got->add_constant(0); | |
7020 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
7021 | ||
7022 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7023 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
7024 | elfcpp::R_POWERPC_TPREL, | |
7025 | got, off, 0); | |
7026 | } | |
dd93cd0a AM |
7027 | } |
7028 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7029 | { | |
7030 | // no GOT relocs needed for Local Exec. | |
7031 | } | |
7032 | else | |
7033 | gold_unreachable(); | |
7034 | } | |
7035 | break; | |
7036 | ||
7037 | default: | |
7038 | unsupported_reloc_local(object, r_type); | |
7039 | break; | |
7040 | } | |
d8f5a274 | 7041 | |
5edad15d AM |
7042 | if (size == 64 |
7043 | && parameters->options().toc_optimize()) | |
7044 | { | |
7045 | if (data_shndx == ppc_object->toc_shndx()) | |
7046 | { | |
7047 | bool ok = true; | |
7048 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
7049 | || (is_ifunc && target->abiversion() < 2)) | |
7050 | ok = false; | |
7051 | else if (parameters->options().output_is_position_independent()) | |
7052 | { | |
7053 | if (is_ifunc) | |
7054 | ok = false; | |
7055 | else | |
7056 | { | |
7057 | unsigned int shndx = lsym.get_st_shndx(); | |
7058 | if (shndx >= elfcpp::SHN_LORESERVE | |
7059 | && shndx != elfcpp::SHN_XINDEX) | |
7060 | ok = false; | |
7061 | } | |
7062 | } | |
7063 | if (!ok) | |
7064 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
7065 | } | |
7066 | ||
7067 | enum {no_check, check_lo, check_ha} insn_check; | |
7068 | switch (r_type) | |
7069 | { | |
7070 | default: | |
7071 | insn_check = no_check; | |
7072 | break; | |
7073 | ||
7074 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7075 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7076 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7077 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7078 | case elfcpp::R_POWERPC_GOT16_HA: | |
7079 | case elfcpp::R_PPC64_TOC16_HA: | |
7080 | insn_check = check_ha; | |
7081 | break; | |
7082 | ||
7083 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7084 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7085 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7086 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7087 | case elfcpp::R_POWERPC_GOT16_LO: | |
7088 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7089 | case elfcpp::R_PPC64_TOC16_LO: | |
7090 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7091 | insn_check = check_lo; | |
7092 | break; | |
7093 | } | |
7094 | ||
7095 | section_size_type slen; | |
7096 | const unsigned char* view = NULL; | |
7097 | if (insn_check != no_check) | |
7098 | { | |
7099 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
7100 | section_size_type off = | |
7101 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
7102 | if (off < slen) | |
7103 | { | |
7104 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
7105 | if (insn_check == check_lo | |
7106 | ? !ok_lo_toc_insn(insn, r_type) | |
7107 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7108 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
7109 | { | |
7110 | ppc_object->set_no_toc_opt(); | |
7111 | gold_warning(_("%s: toc optimization is not supported " | |
7112 | "for %#08x instruction"), | |
7113 | ppc_object->name().c_str(), insn); | |
7114 | } | |
7115 | } | |
7116 | } | |
7117 | ||
7118 | switch (r_type) | |
7119 | { | |
7120 | default: | |
7121 | break; | |
7122 | case elfcpp::R_PPC64_TOC16: | |
7123 | case elfcpp::R_PPC64_TOC16_LO: | |
7124 | case elfcpp::R_PPC64_TOC16_HI: | |
7125 | case elfcpp::R_PPC64_TOC16_HA: | |
7126 | case elfcpp::R_PPC64_TOC16_DS: | |
7127 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7128 | unsigned int shndx = lsym.get_st_shndx(); | |
7129 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7130 | bool is_ordinary; | |
7131 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
7132 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
7133 | { | |
412294da | 7134 | Address dst_off = lsym.get_st_value() + reloc.get_r_addend(); |
5edad15d AM |
7135 | if (dst_off < ppc_object->section_size(shndx)) |
7136 | { | |
7137 | bool ok = false; | |
7138 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
7139 | ok = true; | |
7140 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
7141 | { | |
7142 | // Need to check that the insn is a ld | |
7143 | if (!view) | |
7144 | view = ppc_object->section_contents(data_shndx, | |
7145 | &slen, | |
7146 | false); | |
7147 | section_size_type off = | |
7148 | (convert_to_section_size_type(reloc.get_r_offset()) | |
7149 | + (big_endian ? -2 : 3)); | |
7150 | if (off < slen | |
7151 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
7152 | ok = true; | |
7153 | } | |
7154 | if (!ok) | |
7155 | ppc_object->set_no_toc_opt(dst_off); | |
7156 | } | |
7157 | } | |
7158 | break; | |
7159 | } | |
7160 | } | |
7161 | ||
f159cdb6 AM |
7162 | if (size == 32) |
7163 | { | |
7164 | switch (r_type) | |
7165 | { | |
7166 | case elfcpp::R_POWERPC_REL32: | |
7167 | if (ppc_object->got2_shndx() != 0 | |
7168 | && parameters->options().output_is_position_independent()) | |
7169 | { | |
7170 | unsigned int shndx = lsym.get_st_shndx(); | |
7171 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7172 | bool is_ordinary; | |
7173 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
7174 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
7175 | && (ppc_object->section_flags(data_shndx) | |
7176 | & elfcpp::SHF_EXECINSTR) != 0) | |
7177 | gold_error(_("%s: unsupported -mbss-plt code"), | |
7178 | ppc_object->name().c_str()); | |
7179 | } | |
7180 | break; | |
7181 | default: | |
7182 | break; | |
7183 | } | |
7184 | } | |
7185 | ||
d8f5a274 AM |
7186 | switch (r_type) |
7187 | { | |
7188 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7189 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7190 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7191 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7192 | case elfcpp::R_POWERPC_GOT16: | |
7193 | case elfcpp::R_PPC64_GOT16_DS: | |
7194 | case elfcpp::R_PPC64_TOC16: | |
7195 | case elfcpp::R_PPC64_TOC16_DS: | |
7196 | ppc_object->set_has_small_toc_reloc(); | |
7197 | default: | |
7198 | break; | |
7199 | } | |
dd93cd0a AM |
7200 | } |
7201 | ||
7202 | // Report an unsupported relocation against a global symbol. | |
7203 | ||
7204 | template<int size, bool big_endian> | |
7205 | void | |
7206 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
7207 | Sized_relobj_file<size, big_endian>* object, | |
7208 | unsigned int r_type, | |
7209 | Symbol* gsym) | |
7210 | { | |
42cacb20 DE |
7211 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
7212 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
7213 | } | |
7214 | ||
7215 | // Scan a relocation for a global symbol. | |
7216 | ||
7217 | template<int size, bool big_endian> | |
7218 | inline void | |
7219 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
7220 | Symbol_table* symtab, |
7221 | Layout* layout, | |
7222 | Target_powerpc<size, big_endian>* target, | |
7223 | Sized_relobj_file<size, big_endian>* object, | |
7224 | unsigned int data_shndx, | |
7225 | Output_section* output_section, | |
7226 | const elfcpp::Rela<size, big_endian>& reloc, | |
7227 | unsigned int r_type, | |
7228 | Symbol* gsym) | |
42cacb20 | 7229 | { |
34e0882b AM |
7230 | if (this->maybe_skip_tls_get_addr_call(target, r_type, gsym) |
7231 | == Track_tls::SKIP) | |
e3deeb9c AM |
7232 | return; |
7233 | ||
34e0882b AM |
7234 | if (target->replace_tls_get_addr(gsym)) |
7235 | // Change a __tls_get_addr reference to __tls_get_addr_opt | |
7236 | // so dynamic relocs are emitted against the latter symbol. | |
7237 | gsym = target->tls_get_addr_opt(); | |
7238 | ||
e3deeb9c AM |
7239 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) |
7240 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7241 | { | |
7242 | this->expect_tls_get_addr_call(); | |
7243 | const bool final = gsym->final_value_is_known(); | |
7244 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7245 | if (tls_type != tls::TLSOPT_NONE) | |
7246 | this->skip_next_tls_get_addr_call(); | |
7247 | } | |
7248 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7249 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7250 | { | |
7251 | this->expect_tls_get_addr_call(); | |
7252 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7253 | if (tls_type != tls::TLSOPT_NONE) | |
7254 | this->skip_next_tls_get_addr_call(); | |
7255 | } | |
7256 | ||
dd93cd0a AM |
7257 | Powerpc_relobj<size, big_endian>* ppc_object |
7258 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7259 | ||
e5d5f5ed | 7260 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 7261 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
7262 | bool pushed_ifunc = false; |
7263 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 7264 | { |
0e123f69 | 7265 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 7266 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 7267 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 7268 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 7269 | pushed_ifunc = true; |
ec661b9d | 7270 | } |
e5d5f5ed | 7271 | |
42cacb20 DE |
7272 | switch (r_type) |
7273 | { | |
7274 | case elfcpp::R_POWERPC_NONE: | |
7275 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7276 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 7277 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 7278 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 7279 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
7280 | case elfcpp::R_POWERPC_PLTSEQ: |
7281 | case elfcpp::R_POWERPC_PLTCALL: | |
dd93cd0a AM |
7282 | break; |
7283 | ||
7284 | case elfcpp::R_PPC64_TOC: | |
7285 | { | |
7286 | Output_data_got_powerpc<size, big_endian>* got | |
7287 | = target->got_section(symtab, layout); | |
7288 | if (parameters->options().output_is_position_independent()) | |
7289 | { | |
bfdfa4cd AM |
7290 | Address off = reloc.get_r_offset(); |
7291 | if (size == 64 | |
7292 | && data_shndx == ppc_object->opd_shndx() | |
7293 | && ppc_object->get_opd_discard(off - 8)) | |
7294 | break; | |
7295 | ||
dd93cd0a AM |
7296 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7297 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
7298 | if (data_shndx != ppc_object->opd_shndx()) | |
7299 | symobj = static_cast | |
7300 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7301 | rela_dyn->add_output_section_relative(got->output_section(), | |
7302 | elfcpp::R_POWERPC_RELATIVE, | |
7303 | output_section, | |
bfdfa4cd | 7304 | object, data_shndx, off, |
dd93cd0a AM |
7305 | symobj->toc_base_offset()); |
7306 | } | |
7307 | } | |
42cacb20 DE |
7308 | break; |
7309 | ||
c9269dff | 7310 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 7311 | if (size == 64 |
9055360d | 7312 | && target->abiversion() < 2 |
bfdfa4cd AM |
7313 | && data_shndx == ppc_object->opd_shndx() |
7314 | && (gsym->is_defined_in_discarded_section() | |
7315 | || gsym->object() != object)) | |
7316 | { | |
7317 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
7318 | break; | |
7319 | } | |
d8e90251 | 7320 | // Fall through. |
dd93cd0a | 7321 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 7322 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
7323 | case elfcpp::R_POWERPC_UADDR32: |
7324 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
7325 | case elfcpp::R_POWERPC_ADDR16: |
7326 | case elfcpp::R_POWERPC_ADDR16_LO: | |
7327 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7328 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 7329 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
7330 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7331 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
7332 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7333 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7334 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7335 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7336 | case elfcpp::R_PPC64_ADDR16_DS: | |
7337 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
7338 | case elfcpp::R_POWERPC_ADDR14: | |
7339 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7340 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 7341 | { |
c9269dff AM |
7342 | // Make a PLT entry if necessary. |
7343 | if (gsym->needs_plt_entry()) | |
7344 | { | |
9055360d AM |
7345 | // Since this is not a PC-relative relocation, we may be |
7346 | // taking the address of a function. In that case we need to | |
7347 | // set the entry in the dynamic symbol table to the address of | |
7348 | // the PLT call stub. | |
7349 | bool need_ifunc_plt = false; | |
7350 | if ((size == 32 || target->abiversion() >= 2) | |
7351 | && gsym->is_from_dynobj() | |
7352 | && !parameters->options().output_is_position_independent()) | |
7353 | { | |
7354 | gsym->set_needs_dynsym_value(); | |
7355 | need_ifunc_plt = true; | |
7356 | } | |
7357 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 7358 | { |
0e123f69 | 7359 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 7360 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 7361 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
7362 | reloc.get_r_addend()); |
7363 | target->make_plt_entry(symtab, layout, gsym); | |
7364 | } | |
c9269dff AM |
7365 | } |
7366 | // Make a dynamic relocation if necessary. | |
88b8e639 | 7367 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 7368 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 7369 | { |
a82bef93 ST |
7370 | if (!parameters->options().output_is_position_independent() |
7371 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
7372 | { |
7373 | target->copy_reloc(symtab, layout, object, | |
7374 | data_shndx, output_section, gsym, reloc); | |
7375 | } | |
9055360d AM |
7376 | else if ((((size == 32 |
7377 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
7378 | || (size == 64 | |
7379 | && r_type == elfcpp::R_PPC64_ADDR64 | |
7380 | && target->abiversion() >= 2)) | |
627b30b7 AM |
7381 | && gsym->can_use_relative_reloc(false) |
7382 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
7383 | && parameters->options().shared())) | |
7384 | || (size == 64 | |
7385 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 7386 | && target->abiversion() < 2 |
627b30b7 AM |
7387 | && (gsym->can_use_relative_reloc(false) |
7388 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 7389 | { |
b3ccdeb5 AM |
7390 | Reloc_section* rela_dyn |
7391 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
7392 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
7393 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
7394 | rela_dyn->add_symbolless_global_addend( |
7395 | gsym, dynrel, output_section, object, data_shndx, | |
7396 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
7397 | } |
7398 | else | |
7399 | { | |
b3ccdeb5 AM |
7400 | Reloc_section* rela_dyn |
7401 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 7402 | check_non_pic(object, r_type); |
dd93cd0a AM |
7403 | rela_dyn->add_global(gsym, r_type, output_section, |
7404 | object, data_shndx, | |
7405 | reloc.get_r_offset(), | |
7406 | reloc.get_r_addend()); | |
5edad15d AM |
7407 | |
7408 | if (size == 64 | |
7409 | && parameters->options().toc_optimize() | |
7410 | && data_shndx == ppc_object->toc_shndx()) | |
7411 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
7412 | } |
7413 | } | |
42cacb20 DE |
7414 | } |
7415 | break; | |
7416 | ||
08be3224 AM |
7417 | case elfcpp::R_POWERPC_PLT16_LO: |
7418 | case elfcpp::R_POWERPC_PLT16_HI: | |
7419 | case elfcpp::R_POWERPC_PLT16_HA: | |
7420 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
7421 | if (!pushed_ifunc) | |
7422 | target->make_plt_entry(symtab, layout, gsym); | |
7423 | break; | |
7424 | ||
cf43a2fe | 7425 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 7426 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
7427 | if (!is_ifunc) |
7428 | { | |
0e123f69 | 7429 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 7430 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 7431 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
7432 | if (gsym->needs_plt_entry() |
7433 | || (!gsym->final_value_is_known() | |
7434 | && (gsym->is_undefined() | |
7435 | || gsym->is_from_dynobj() | |
7436 | || gsym->is_preemptible()))) | |
7437 | target->make_plt_entry(symtab, layout, gsym); | |
7438 | } | |
d8e90251 | 7439 | // Fall through. |
42cacb20 | 7440 | |
3ea0a085 | 7441 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 7442 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 7443 | // Make a dynamic relocation if necessary. |
88b8e639 | 7444 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 7445 | { |
a82bef93 ST |
7446 | if (!parameters->options().output_is_position_independent() |
7447 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
7448 | { |
7449 | target->copy_reloc(symtab, layout, object, | |
7450 | data_shndx, output_section, gsym, | |
7451 | reloc); | |
7452 | } | |
7453 | else | |
7454 | { | |
b3ccdeb5 AM |
7455 | Reloc_section* rela_dyn |
7456 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
7457 | check_non_pic(object, r_type); |
7458 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
7459 | data_shndx, reloc.get_r_offset(), | |
7460 | reloc.get_r_addend()); | |
7461 | } | |
7462 | } | |
7463 | break; | |
7464 | ||
ec661b9d AM |
7465 | case elfcpp::R_POWERPC_REL14: |
7466 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7467 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 7468 | if (!is_ifunc) |
0e123f69 AM |
7469 | { |
7470 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7471 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7472 | r_type, r_sym, reloc.get_r_addend()); | |
7473 | } | |
ec661b9d AM |
7474 | break; |
7475 | ||
7e57d19e AM |
7476 | case elfcpp::R_PPC64_TOCSAVE: |
7477 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
7478 | // caller has already saved r2 and thus a plt call stub need not | |
7479 | // save r2. | |
7480 | if (size == 64 | |
7481 | && target->mark_pltcall(ppc_object, data_shndx, | |
7482 | reloc.get_r_offset() - 4, symtab)) | |
7483 | { | |
7484 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7485 | bool is_ordinary; | |
7486 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
7487 | if (!is_ordinary) | |
7488 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
7489 | r_sym, shndx); | |
7490 | else | |
7491 | { | |
7492 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
7493 | target->add_tocsave(ppc_object, shndx, | |
7494 | sym->value() + reloc.get_r_addend()); | |
7495 | } | |
7496 | } | |
7497 | break; | |
7498 | ||
6ce78956 AM |
7499 | case elfcpp::R_POWERPC_REL16: |
7500 | case elfcpp::R_POWERPC_REL16_LO: | |
7501 | case elfcpp::R_POWERPC_REL16_HI: | |
7502 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 7503 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 7504 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 7505 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 7506 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 7507 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
7508 | case elfcpp::R_PPC64_SECTOFF_DS: |
7509 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7510 | case elfcpp::R_POWERPC_TPREL16: | |
7511 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7512 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 7513 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
7514 | case elfcpp::R_PPC64_TPREL16_DS: |
7515 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
7516 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
7517 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7518 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 7519 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 7520 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 7521 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
7522 | case elfcpp::R_POWERPC_DTPREL16: |
7523 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7524 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7525 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
7526 | case elfcpp::R_PPC64_DTPREL16_DS: |
7527 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
7528 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7529 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7530 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7531 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7532 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7533 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
7534 | case elfcpp::R_PPC64_TLSGD: |
7535 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 7536 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
7537 | break; |
7538 | ||
42cacb20 DE |
7539 | case elfcpp::R_POWERPC_GOT16: |
7540 | case elfcpp::R_POWERPC_GOT16_LO: | |
7541 | case elfcpp::R_POWERPC_GOT16_HI: | |
7542 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
7543 | case elfcpp::R_PPC64_GOT16_DS: |
7544 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 7545 | { |
c9269dff AM |
7546 | // The symbol requires a GOT entry. |
7547 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
7548 | |
7549 | got = target->got_section(symtab, layout); | |
2e702c99 | 7550 | if (gsym->final_value_is_known()) |
2e702c99 | 7551 | { |
b01a4b04 AM |
7552 | if (is_ifunc |
7553 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
7554 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
7555 | else | |
7556 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
7557 | } | |
7558 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
7559 | { | |
7560 | // If we are generating a shared object or a pie, this | |
7561 | // symbol's GOT entry will be set by a dynamic relocation. | |
7562 | unsigned int off = got->add_constant(0); | |
7563 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
7564 | ||
b3ccdeb5 AM |
7565 | Reloc_section* rela_dyn |
7566 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
7567 | ||
e5d5f5ed | 7568 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
7569 | && !((size == 32 |
7570 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
7571 | && gsym->visibility() == elfcpp::STV_PROTECTED |
7572 | && parameters->options().shared())) | |
2e702c99 | 7573 | { |
b3ccdeb5 AM |
7574 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
7575 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
7576 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
7577 | } | |
7578 | else | |
7579 | { | |
7580 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
7581 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 7582 | } |
2e702c99 | 7583 | } |
42cacb20 DE |
7584 | } |
7585 | break; | |
7586 | ||
cf43a2fe AM |
7587 | case elfcpp::R_PPC64_TOC16: |
7588 | case elfcpp::R_PPC64_TOC16_LO: | |
7589 | case elfcpp::R_PPC64_TOC16_HI: | |
7590 | case elfcpp::R_PPC64_TOC16_HA: | |
7591 | case elfcpp::R_PPC64_TOC16_DS: | |
7592 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
7593 | // We need a GOT section. |
7594 | target->got_section(symtab, layout); | |
7595 | break; | |
7596 | ||
dd93cd0a AM |
7597 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7598 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7599 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7600 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7601 | { | |
7602 | const bool final = gsym->final_value_is_known(); | |
7603 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7604 | if (tls_type == tls::TLSOPT_NONE) | |
7605 | { | |
7606 | Output_data_got_powerpc<size, big_endian>* got | |
7607 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
7608 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7609 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
7610 | elfcpp::R_POWERPC_DTPMOD, |
7611 | elfcpp::R_POWERPC_DTPREL); | |
7612 | } | |
7613 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7614 | { | |
acc276d8 AM |
7615 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7616 | { | |
7617 | Output_data_got_powerpc<size, big_endian>* got | |
7618 | = target->got_section(symtab, layout); | |
7619 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7620 | if (gsym->is_undefined() | |
7621 | || gsym->is_from_dynobj()) | |
7622 | { | |
7623 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7624 | elfcpp::R_POWERPC_TPREL); | |
7625 | } | |
7626 | else | |
7627 | { | |
7628 | unsigned int off = got->add_constant(0); | |
7629 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7630 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7631 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7632 | got, off, 0); | |
7633 | } | |
7634 | } | |
dd93cd0a AM |
7635 | } |
7636 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7637 | { | |
7638 | // no GOT relocs needed for Local Exec. | |
7639 | } | |
7640 | else | |
7641 | gold_unreachable(); | |
7642 | } | |
42cacb20 DE |
7643 | break; |
7644 | ||
dd93cd0a AM |
7645 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
7646 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7647 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7648 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7649 | { | |
7650 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7651 | if (tls_type == tls::TLSOPT_NONE) | |
7652 | target->tlsld_got_offset(symtab, layout, object); | |
7653 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7654 | { | |
7655 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
7656 | if (parameters->options().emit_relocs()) |
7657 | { | |
7658 | Output_section* os = layout->tls_segment()->first_section(); | |
7659 | gold_assert(os != NULL); | |
7660 | os->set_needs_symtab_index(); | |
7661 | } | |
dd93cd0a AM |
7662 | } |
7663 | else | |
7664 | gold_unreachable(); | |
7665 | } | |
7666 | break; | |
7667 | ||
7668 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7669 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7670 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7671 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7672 | { | |
7673 | Output_data_got_powerpc<size, big_endian>* got | |
7674 | = target->got_section(symtab, layout); | |
bd73a62d AM |
7675 | if (!gsym->final_value_is_known() |
7676 | && (gsym->is_from_dynobj() | |
7677 | || gsym->is_undefined() | |
7678 | || gsym->is_preemptible())) | |
7679 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
7680 | target->rela_dyn_section(layout), | |
7681 | elfcpp::R_POWERPC_DTPREL); | |
7682 | else | |
7683 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
7684 | } |
7685 | break; | |
7686 | ||
7687 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7688 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7689 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7690 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7691 | { | |
7692 | const bool final = gsym->final_value_is_known(); | |
7693 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7694 | if (tls_type == tls::TLSOPT_NONE) | |
7695 | { | |
acc276d8 AM |
7696 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7697 | { | |
7698 | Output_data_got_powerpc<size, big_endian>* got | |
7699 | = target->got_section(symtab, layout); | |
7700 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7701 | if (gsym->is_undefined() | |
7702 | || gsym->is_from_dynobj()) | |
7703 | { | |
7704 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7705 | elfcpp::R_POWERPC_TPREL); | |
7706 | } | |
7707 | else | |
7708 | { | |
7709 | unsigned int off = got->add_constant(0); | |
7710 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7711 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7712 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7713 | got, off, 0); | |
7714 | } | |
7715 | } | |
dd93cd0a AM |
7716 | } |
7717 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7718 | { | |
7719 | // no GOT relocs needed for Local Exec. | |
7720 | } | |
7721 | else | |
7722 | gold_unreachable(); | |
7723 | } | |
42cacb20 DE |
7724 | break; |
7725 | ||
7726 | default: | |
7727 | unsupported_reloc_global(object, r_type, gsym); | |
7728 | break; | |
7729 | } | |
d8f5a274 | 7730 | |
5edad15d AM |
7731 | if (size == 64 |
7732 | && parameters->options().toc_optimize()) | |
7733 | { | |
7734 | if (data_shndx == ppc_object->toc_shndx()) | |
7735 | { | |
7736 | bool ok = true; | |
7737 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
7738 | || (is_ifunc && target->abiversion() < 2)) | |
7739 | ok = false; | |
7740 | else if (parameters->options().output_is_position_independent() | |
7741 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
7742 | ok = false; | |
7743 | if (!ok) | |
7744 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
7745 | } | |
7746 | ||
7747 | enum {no_check, check_lo, check_ha} insn_check; | |
7748 | switch (r_type) | |
7749 | { | |
7750 | default: | |
7751 | insn_check = no_check; | |
7752 | break; | |
7753 | ||
7754 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7755 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7756 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7757 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7758 | case elfcpp::R_POWERPC_GOT16_HA: | |
7759 | case elfcpp::R_PPC64_TOC16_HA: | |
7760 | insn_check = check_ha; | |
7761 | break; | |
7762 | ||
7763 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7764 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7765 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7766 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7767 | case elfcpp::R_POWERPC_GOT16_LO: | |
7768 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7769 | case elfcpp::R_PPC64_TOC16_LO: | |
7770 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7771 | insn_check = check_lo; | |
7772 | break; | |
7773 | } | |
7774 | ||
7775 | section_size_type slen; | |
7776 | const unsigned char* view = NULL; | |
7777 | if (insn_check != no_check) | |
7778 | { | |
7779 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
7780 | section_size_type off = | |
7781 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
7782 | if (off < slen) | |
7783 | { | |
7784 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
7785 | if (insn_check == check_lo | |
7786 | ? !ok_lo_toc_insn(insn, r_type) | |
7787 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7788 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
7789 | { | |
7790 | ppc_object->set_no_toc_opt(); | |
7791 | gold_warning(_("%s: toc optimization is not supported " | |
7792 | "for %#08x instruction"), | |
7793 | ppc_object->name().c_str(), insn); | |
7794 | } | |
7795 | } | |
7796 | } | |
7797 | ||
7798 | switch (r_type) | |
7799 | { | |
7800 | default: | |
7801 | break; | |
7802 | case elfcpp::R_PPC64_TOC16: | |
7803 | case elfcpp::R_PPC64_TOC16_LO: | |
7804 | case elfcpp::R_PPC64_TOC16_HI: | |
7805 | case elfcpp::R_PPC64_TOC16_HA: | |
7806 | case elfcpp::R_PPC64_TOC16_DS: | |
7807 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7808 | if (gsym->source() == Symbol::FROM_OBJECT | |
7809 | && !gsym->object()->is_dynamic()) | |
7810 | { | |
7811 | Powerpc_relobj<size, big_endian>* sym_object | |
7812 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7813 | bool is_ordinary; | |
7814 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
7815 | if (shndx == sym_object->toc_shndx()) | |
7816 | { | |
7817 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
412294da | 7818 | Address dst_off = sym->value() + reloc.get_r_addend(); |
5edad15d AM |
7819 | if (dst_off < sym_object->section_size(shndx)) |
7820 | { | |
7821 | bool ok = false; | |
7822 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
7823 | ok = true; | |
7824 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
7825 | { | |
7826 | // Need to check that the insn is a ld | |
7827 | if (!view) | |
7828 | view = ppc_object->section_contents(data_shndx, | |
7829 | &slen, | |
7830 | false); | |
7831 | section_size_type off = | |
7832 | (convert_to_section_size_type(reloc.get_r_offset()) | |
7833 | + (big_endian ? -2 : 3)); | |
7834 | if (off < slen | |
7835 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
7836 | ok = true; | |
7837 | } | |
7838 | if (!ok) | |
7839 | sym_object->set_no_toc_opt(dst_off); | |
7840 | } | |
7841 | } | |
7842 | } | |
7843 | break; | |
7844 | } | |
7845 | } | |
7846 | ||
f159cdb6 AM |
7847 | if (size == 32) |
7848 | { | |
7849 | switch (r_type) | |
7850 | { | |
7851 | case elfcpp::R_PPC_LOCAL24PC: | |
7852 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
7853 | gold_error(_("%s: unsupported -mbss-plt code"), | |
7854 | ppc_object->name().c_str()); | |
7855 | break; | |
7856 | default: | |
7857 | break; | |
7858 | } | |
7859 | } | |
7860 | ||
d8f5a274 AM |
7861 | switch (r_type) |
7862 | { | |
7863 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7864 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7865 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7866 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7867 | case elfcpp::R_POWERPC_GOT16: | |
7868 | case elfcpp::R_PPC64_GOT16_DS: | |
7869 | case elfcpp::R_PPC64_TOC16: | |
7870 | case elfcpp::R_PPC64_TOC16_DS: | |
7871 | ppc_object->set_has_small_toc_reloc(); | |
7872 | default: | |
7873 | break; | |
7874 | } | |
42cacb20 DE |
7875 | } |
7876 | ||
6d03d481 ST |
7877 | // Process relocations for gc. |
7878 | ||
7879 | template<int size, bool big_endian> | |
7880 | void | |
7881 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
7882 | Symbol_table* symtab, |
7883 | Layout* layout, | |
7884 | Sized_relobj_file<size, big_endian>* object, | |
7885 | unsigned int data_shndx, | |
7886 | unsigned int, | |
7887 | const unsigned char* prelocs, | |
7888 | size_t reloc_count, | |
7889 | Output_section* output_section, | |
7890 | bool needs_special_offset_handling, | |
7891 | size_t local_symbol_count, | |
7892 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
7893 | { |
7894 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
7895 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
7896 | Classify_reloc; | |
7897 | ||
e81fea4d AM |
7898 | Powerpc_relobj<size, big_endian>* ppc_object |
7899 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7900 | if (size == 64) | |
7901 | ppc_object->set_opd_valid(); | |
7902 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
7903 | { | |
7904 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
7905 | for (p = ppc_object->access_from_map()->begin(); | |
7906 | p != ppc_object->access_from_map()->end(); | |
7907 | ++p) | |
7908 | { | |
7909 | Address dst_off = p->first; | |
7910 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
7911 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
7912 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
7913 | { | |
efc6fa12 | 7914 | Relobj* src_obj = s->first; |
e81fea4d AM |
7915 | unsigned int src_indx = s->second; |
7916 | symtab->gc()->add_reference(src_obj, src_indx, | |
7917 | ppc_object, dst_indx); | |
7918 | } | |
7919 | p->second.clear(); | |
7920 | } | |
7921 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 7922 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
7923 | // Don't look at .opd relocs as .opd will reference everything. |
7924 | return; | |
7925 | } | |
6d03d481 | 7926 | |
4d625b70 | 7927 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
7928 | symtab, |
7929 | layout, | |
7930 | this, | |
7931 | object, | |
7932 | data_shndx, | |
7933 | prelocs, | |
7934 | reloc_count, | |
7935 | output_section, | |
7936 | needs_special_offset_handling, | |
7937 | local_symbol_count, | |
7938 | plocal_symbols); | |
7939 | } | |
7940 | ||
e81fea4d AM |
7941 | // Handle target specific gc actions when adding a gc reference from |
7942 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
7943 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
7944 | // section of a function descriptor. | |
7945 | ||
7946 | template<int size, bool big_endian> | |
7947 | void | |
7948 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
7949 | Symbol_table* symtab, | |
efc6fa12 | 7950 | Relobj* src_obj, |
e81fea4d | 7951 | unsigned int src_shndx, |
efc6fa12 | 7952 | Relobj* dst_obj, |
e81fea4d AM |
7953 | unsigned int dst_shndx, |
7954 | Address dst_off) const | |
7955 | { | |
6c77229c AM |
7956 | if (size != 64 || dst_obj->is_dynamic()) |
7957 | return; | |
7958 | ||
e81fea4d AM |
7959 | Powerpc_relobj<size, big_endian>* ppc_object |
7960 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 7961 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7962 | { |
7963 | if (ppc_object->opd_valid()) | |
7964 | { | |
7965 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
7966 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
7967 | } | |
7968 | else | |
7969 | { | |
7970 | // If we haven't run scan_opd_relocs, we must delay | |
7971 | // processing this function descriptor reference. | |
7972 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
7973 | } | |
7974 | } | |
7975 | } | |
7976 | ||
7977 | // Add any special sections for this symbol to the gc work list. | |
7978 | // For powerpc64, this adds the code section of a function | |
7979 | // descriptor. | |
7980 | ||
7981 | template<int size, bool big_endian> | |
7982 | void | |
7983 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
7984 | Symbol_table* symtab, | |
7985 | Symbol* sym) const | |
7986 | { | |
7987 | if (size == 64) | |
7988 | { | |
7989 | Powerpc_relobj<size, big_endian>* ppc_object | |
7990 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
7991 | bool is_ordinary; | |
7992 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 7993 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7994 | { |
7995 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
7996 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
7997 | if (ppc_object->opd_valid()) |
7998 | { | |
7999 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
8000 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
8001 | dst_indx)); | |
c6de8ed4 AM |
8002 | } |
8003 | else | |
8004 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
8005 | } |
8006 | } | |
8007 | } | |
8008 | ||
dc3714f3 AM |
8009 | // For a symbol location in .opd, set LOC to the location of the |
8010 | // function entry. | |
8011 | ||
8012 | template<int size, bool big_endian> | |
8013 | void | |
8014 | Target_powerpc<size, big_endian>::do_function_location( | |
8015 | Symbol_location* loc) const | |
8016 | { | |
a2d7bf59 | 8017 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
8018 | { |
8019 | if (loc->object->is_dynamic()) | |
8020 | { | |
8021 | Powerpc_dynobj<size, big_endian>* ppc_object | |
8022 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
8023 | if (loc->shndx == ppc_object->opd_shndx()) | |
8024 | { | |
8025 | Address dest_off; | |
8026 | Address off = loc->offset - ppc_object->opd_address(); | |
8027 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
8028 | loc->offset = dest_off; | |
8029 | } | |
8030 | } | |
8031 | else | |
8032 | { | |
8033 | const Powerpc_relobj<size, big_endian>* ppc_object | |
8034 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
8035 | if (loc->shndx == ppc_object->opd_shndx()) | |
8036 | { | |
8037 | Address dest_off; | |
8038 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
8039 | loc->offset = dest_off; | |
8040 | } | |
8041 | } | |
8042 | } | |
8043 | } | |
8044 | ||
bbec1a5d AM |
8045 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
8046 | // compiled with -fsplit-stack. The function calls non-split-stack | |
8047 | // code. Change the function to ensure it has enough stack space to | |
8048 | // call some random function. | |
8049 | ||
8050 | template<int size, bool big_endian> | |
8051 | void | |
8052 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
8053 | Relobj* object, | |
8054 | unsigned int shndx, | |
8055 | section_offset_type fnoffset, | |
8056 | section_size_type fnsize, | |
6e0813d3 CC |
8057 | const unsigned char* prelocs, |
8058 | size_t reloc_count, | |
bbec1a5d AM |
8059 | unsigned char* view, |
8060 | section_size_type view_size, | |
8061 | std::string* from, | |
8062 | std::string* to) const | |
8063 | { | |
8064 | // 32-bit not supported. | |
8065 | if (size == 32) | |
8066 | { | |
8067 | // warn | |
8068 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
8069 | prelocs, reloc_count, view, view_size, |
8070 | from, to); | |
bbec1a5d AM |
8071 | return; |
8072 | } | |
8073 | ||
8074 | // The function always starts with | |
8075 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
8076 | // addis %r12,%r1,-allocate@ha | |
8077 | // addi %r12,%r12,-allocate@l | |
8078 | // cmpld %r12,%r0 | |
8079 | // but note that the addis or addi may be replaced with a nop | |
8080 | ||
8081 | unsigned char *entry = view + fnoffset; | |
8082 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
8083 | ||
8084 | if ((insn & 0xffff0000) == addis_2_12) | |
8085 | { | |
8086 | /* Skip ELFv2 global entry code. */ | |
8087 | entry += 8; | |
8088 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
8089 | } | |
8090 | ||
8091 | unsigned char *pinsn = entry; | |
8092 | bool ok = false; | |
8093 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
8094 | if (insn == ld_private_ss) | |
8095 | { | |
8096 | int32_t allocate = 0; | |
8097 | while (1) | |
8098 | { | |
8099 | pinsn += 4; | |
8100 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
8101 | if ((insn & 0xffff0000) == addis_12_1) | |
8102 | allocate += (insn & 0xffff) << 16; | |
8103 | else if ((insn & 0xffff0000) == addi_12_1 | |
8104 | || (insn & 0xffff0000) == addi_12_12) | |
8105 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
8106 | else if (insn != nop) | |
8107 | break; | |
8108 | } | |
8109 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
8110 | { | |
8111 | int extra = parameters->options().split_stack_adjust_size(); | |
8112 | allocate -= extra; | |
8113 | if (allocate >= 0 || extra < 0) | |
8114 | { | |
8115 | object->error(_("split-stack stack size overflow at " | |
8116 | "section %u offset %0zx"), | |
8117 | shndx, static_cast<size_t>(fnoffset)); | |
8118 | return; | |
8119 | } | |
8120 | pinsn = entry + 4; | |
8121 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
8122 | if (insn != addis_12_1) | |
8123 | { | |
8124 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
8125 | pinsn += 4; | |
8126 | insn = addi_12_12 | (allocate & 0xffff); | |
8127 | if (insn != addi_12_12) | |
8128 | { | |
8129 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
8130 | pinsn += 4; | |
8131 | } | |
8132 | } | |
8133 | else | |
8134 | { | |
8135 | insn = addi_12_1 | (allocate & 0xffff); | |
8136 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
8137 | pinsn += 4; | |
8138 | } | |
8139 | if (pinsn != entry + 12) | |
8140 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
8141 | ||
8142 | ok = true; | |
8143 | } | |
8144 | } | |
8145 | ||
8146 | if (!ok) | |
8147 | { | |
8148 | if (!object->has_no_split_stack()) | |
8149 | object->error(_("failed to match split-stack sequence at " | |
8150 | "section %u offset %0zx"), | |
8151 | shndx, static_cast<size_t>(fnoffset)); | |
8152 | } | |
8153 | } | |
8154 | ||
42cacb20 DE |
8155 | // Scan relocations for a section. |
8156 | ||
8157 | template<int size, bool big_endian> | |
8158 | void | |
8159 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
8160 | Symbol_table* symtab, |
8161 | Layout* layout, | |
8162 | Sized_relobj_file<size, big_endian>* object, | |
8163 | unsigned int data_shndx, | |
8164 | unsigned int sh_type, | |
8165 | const unsigned char* prelocs, | |
8166 | size_t reloc_count, | |
8167 | Output_section* output_section, | |
8168 | bool needs_special_offset_handling, | |
8169 | size_t local_symbol_count, | |
8170 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
8171 | { |
8172 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
8173 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
8174 | Classify_reloc; | |
42cacb20 | 8175 | |
7ee7ff70 AM |
8176 | if (!this->plt_localentry0_init_) |
8177 | { | |
8178 | bool plt_localentry0 = false; | |
8179 | if (size == 64 | |
8180 | && this->abiversion() >= 2) | |
8181 | { | |
8182 | if (parameters->options().user_set_plt_localentry()) | |
8183 | plt_localentry0 = parameters->options().plt_localentry(); | |
d44c746a AM |
8184 | if (plt_localentry0 |
8185 | && symtab->lookup("GLIBC_2.26", NULL) == NULL) | |
8186 | gold_warning(_("--plt-localentry is especially dangerous without " | |
8187 | "ld.so support to detect ABI violations")); | |
7ee7ff70 AM |
8188 | } |
8189 | this->plt_localentry0_ = plt_localentry0; | |
8190 | this->plt_localentry0_init_ = true; | |
8191 | } | |
8192 | ||
42cacb20 DE |
8193 | if (sh_type == elfcpp::SHT_REL) |
8194 | { | |
8195 | gold_error(_("%s: unsupported REL reloc section"), | |
8196 | object->name().c_str()); | |
8197 | return; | |
8198 | } | |
8199 | ||
4d625b70 | 8200 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
8201 | symtab, |
8202 | layout, | |
8203 | this, | |
8204 | object, | |
8205 | data_shndx, | |
8206 | prelocs, | |
8207 | reloc_count, | |
8208 | output_section, | |
8209 | needs_special_offset_handling, | |
8210 | local_symbol_count, | |
8211 | plocal_symbols); | |
8212 | } | |
8213 | ||
ec4dbad3 AM |
8214 | // Functor class for processing the global symbol table. |
8215 | // Removes symbols defined on discarded opd entries. | |
8216 | ||
8217 | template<bool big_endian> | |
8218 | class Global_symbol_visitor_opd | |
8219 | { | |
8220 | public: | |
8221 | Global_symbol_visitor_opd() | |
8222 | { } | |
8223 | ||
8224 | void | |
8225 | operator()(Sized_symbol<64>* sym) | |
8226 | { | |
8227 | if (sym->has_symtab_index() | |
8228 | || sym->source() != Symbol::FROM_OBJECT | |
8229 | || !sym->in_real_elf()) | |
8230 | return; | |
8231 | ||
6c77229c AM |
8232 | if (sym->object()->is_dynamic()) |
8233 | return; | |
8234 | ||
ec4dbad3 AM |
8235 | Powerpc_relobj<64, big_endian>* symobj |
8236 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 8237 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
8238 | return; |
8239 | ||
8240 | bool is_ordinary; | |
8241 | unsigned int shndx = sym->shndx(&is_ordinary); | |
8242 | if (shndx == symobj->opd_shndx() | |
8243 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
8244 | { |
8245 | sym->set_undefined(); | |
e3ee8ed4 | 8246 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
8247 | sym->set_is_defined_in_discarded_section(); |
8248 | sym->set_symtab_index(-1U); | |
8249 | } | |
ec4dbad3 AM |
8250 | } |
8251 | }; | |
8252 | ||
f3a0ed29 AM |
8253 | template<int size, bool big_endian> |
8254 | void | |
8255 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
8256 | Layout* layout, | |
8257 | Symbol_table* symtab) | |
8258 | { | |
8259 | if (size == 64) | |
8260 | { | |
d49044c7 AM |
8261 | Output_data_save_res<size, big_endian>* savres |
8262 | = new Output_data_save_res<size, big_endian>(symtab); | |
8263 | this->savres_section_ = savres; | |
f3a0ed29 AM |
8264 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
8265 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
8266 | savres, ORDER_TEXT, false); | |
8267 | } | |
8268 | } | |
8269 | ||
d8f5a274 AM |
8270 | // Sort linker created .got section first (for the header), then input |
8271 | // sections belonging to files using small model code. | |
8272 | ||
8273 | template<bool big_endian> | |
8274 | class Sort_toc_sections | |
8275 | { | |
8276 | public: | |
8277 | bool | |
8278 | operator()(const Output_section::Input_section& is1, | |
8279 | const Output_section::Input_section& is2) const | |
8280 | { | |
8281 | if (!is1.is_input_section() && is2.is_input_section()) | |
8282 | return true; | |
8283 | bool small1 | |
8284 | = (is1.is_input_section() | |
8285 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
8286 | ->has_small_toc_reloc())); | |
8287 | bool small2 | |
8288 | = (is2.is_input_section() | |
8289 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
8290 | ->has_small_toc_reloc())); | |
8291 | return small1 && !small2; | |
8292 | } | |
8293 | }; | |
8294 | ||
42cacb20 DE |
8295 | // Finalize the sections. |
8296 | ||
8297 | template<int size, bool big_endian> | |
8298 | void | |
d5b40221 DK |
8299 | Target_powerpc<size, big_endian>::do_finalize_sections( |
8300 | Layout* layout, | |
f59f41f3 | 8301 | const Input_objects*, |
ec4dbad3 | 8302 | Symbol_table* symtab) |
42cacb20 | 8303 | { |
c9824451 AM |
8304 | if (parameters->doing_static_link()) |
8305 | { | |
8306 | // At least some versions of glibc elf-init.o have a strong | |
8307 | // reference to __rela_iplt marker syms. A weak ref would be | |
8308 | // better.. | |
8309 | if (this->iplt_ != NULL) | |
8310 | { | |
8311 | Reloc_section* rel = this->iplt_->rel_plt(); | |
8312 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
8313 | Symbol_table::PREDEFINED, rel, 0, 0, | |
8314 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8315 | elfcpp::STV_HIDDEN, 0, false, true); | |
8316 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
8317 | Symbol_table::PREDEFINED, rel, 0, 0, | |
8318 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8319 | elfcpp::STV_HIDDEN, 0, true, true); | |
8320 | } | |
8321 | else | |
8322 | { | |
8323 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
8324 | Symbol_table::PREDEFINED, 0, 0, | |
8325 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8326 | elfcpp::STV_HIDDEN, 0, true, false); | |
8327 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
8328 | Symbol_table::PREDEFINED, 0, 0, | |
8329 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8330 | elfcpp::STV_HIDDEN, 0, true, false); | |
8331 | } | |
8332 | } | |
8333 | ||
ec4dbad3 AM |
8334 | if (size == 64) |
8335 | { | |
8336 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
8337 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
8338 | |
8339 | if (!parameters->options().relocatable()) | |
8340 | { | |
8341 | this->define_save_restore_funcs(layout, symtab); | |
8342 | ||
8343 | // Annoyingly, we need to make these sections now whether or | |
8344 | // not we need them. If we delay until do_relax then we | |
8345 | // need to mess with the relaxation machinery checkpointing. | |
8346 | this->got_section(symtab, layout); | |
8347 | this->make_brlt_section(layout); | |
d8f5a274 AM |
8348 | |
8349 | if (parameters->options().toc_sort()) | |
8350 | { | |
8351 | Output_section* os = this->got_->output_section(); | |
8352 | if (os != NULL && os->input_sections().size() > 1) | |
8353 | std::stable_sort(os->input_sections().begin(), | |
8354 | os->input_sections().end(), | |
8355 | Sort_toc_sections<big_endian>()); | |
8356 | } | |
ec661b9d | 8357 | } |
ec4dbad3 AM |
8358 | } |
8359 | ||
42cacb20 | 8360 | // Fill in some more dynamic tags. |
c9269dff | 8361 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 8362 | if (odyn != NULL) |
cf43a2fe | 8363 | { |
c9824451 AM |
8364 | const Reloc_section* rel_plt = (this->plt_ == NULL |
8365 | ? NULL | |
8366 | : this->plt_->rel_plt()); | |
8367 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
8368 | this->rela_dyn_, true, size == 32); | |
8369 | ||
8370 | if (size == 32) | |
dd93cd0a | 8371 | { |
c9824451 AM |
8372 | if (this->got_ != NULL) |
8373 | { | |
8374 | this->got_->finalize_data_size(); | |
8375 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
8376 | this->got_, this->got_->g_o_t()); | |
8377 | } | |
34e0882b AM |
8378 | if (this->has_tls_get_addr_opt_) |
8379 | odyn->add_constant(elfcpp::DT_PPC_OPT, elfcpp::PPC_OPT_TLS); | |
dd93cd0a | 8380 | } |
c9824451 | 8381 | else |
dd93cd0a | 8382 | { |
c9824451 AM |
8383 | if (this->glink_ != NULL) |
8384 | { | |
8385 | this->glink_->finalize_data_size(); | |
8386 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
8387 | this->glink_, | |
9e390558 | 8388 | (this->glink_->pltresolve_size() |
c9824451 AM |
8389 | - 32)); |
8390 | } | |
34e0882b | 8391 | if (this->has_localentry0_ || this->has_tls_get_addr_opt_) |
7ee7ff70 | 8392 | odyn->add_constant(elfcpp::DT_PPC64_OPT, |
34e0882b AM |
8393 | ((this->has_localentry0_ |
8394 | ? elfcpp::PPC64_OPT_LOCALENTRY : 0) | |
8395 | | (this->has_tls_get_addr_opt_ | |
8396 | ? elfcpp::PPC64_OPT_TLS : 0))); | |
dd93cd0a | 8397 | } |
c9269dff | 8398 | } |
cf43a2fe | 8399 | |
42cacb20 DE |
8400 | // Emit any relocs we saved in an attempt to avoid generating COPY |
8401 | // relocs. | |
8402 | if (this->copy_relocs_.any_saved_relocs()) | |
8403 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
8404 | } | |
8405 | ||
5edad15d AM |
8406 | // Emit any saved relocs, and mark toc entries using any of these |
8407 | // relocs as not optimizable. | |
aba6bc71 | 8408 | |
5edad15d AM |
8409 | template<int sh_type, int size, bool big_endian> |
8410 | void | |
8411 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
8412 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 8413 | { |
5edad15d AM |
8414 | if (size == 64 |
8415 | && parameters->options().toc_optimize()) | |
8416 | { | |
8417 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
8418 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
8419 | p != this->entries_.end(); | |
8420 | ++p) | |
8421 | { | |
8422 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
8423 | entry = *p; | |
8424 | ||
8425 | // If the symbol is no longer defined in a dynamic object, | |
8426 | // then we emitted a COPY relocation. If it is still | |
8427 | // dynamic then we'll need dynamic relocations and thus | |
8428 | // can't optimize toc entries. | |
8429 | if (entry.sym_->is_from_dynobj()) | |
8430 | { | |
8431 | Powerpc_relobj<size, big_endian>* ppc_object | |
8432 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
8433 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
8434 | ppc_object->set_no_toc_opt(entry.address_); | |
8435 | } | |
8436 | } | |
8437 | } | |
8438 | ||
8439 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
8440 | } |
8441 | ||
3ea0a085 AM |
8442 | // Return the value to use for a branch relocation. |
8443 | ||
8444 | template<int size, bool big_endian> | |
1611bc4a | 8445 | bool |
3ea0a085 | 8446 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 8447 | const Symbol_table* symtab, |
3ea0a085 AM |
8448 | const Sized_symbol<size>* gsym, |
8449 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 8450 | Address *value, |
3ea0a085 AM |
8451 | unsigned int *dest_shndx) |
8452 | { | |
9055360d AM |
8453 | if (size == 32 || this->abiversion() >= 2) |
8454 | gold_unreachable(); | |
3ea0a085 | 8455 | *dest_shndx = 0; |
3ea0a085 AM |
8456 | |
8457 | // If the symbol is defined in an opd section, ie. is a function | |
8458 | // descriptor, use the function descriptor code entry address | |
8459 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 8460 | if (gsym != NULL |
0e123f69 AM |
8461 | && (gsym->source() != Symbol::FROM_OBJECT |
8462 | || gsym->object()->is_dynamic())) | |
1611bc4a | 8463 | return true; |
3ea0a085 AM |
8464 | if (gsym != NULL) |
8465 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8466 | unsigned int shndx = symobj->opd_shndx(); | |
8467 | if (shndx == 0) | |
1611bc4a | 8468 | return true; |
3ea0a085 | 8469 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 8470 | if (opd_addr == invalid_address) |
1611bc4a | 8471 | return true; |
c6905c28 | 8472 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 8473 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
8474 | { |
8475 | Address sec_off; | |
1611bc4a | 8476 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
8477 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
8478 | { | |
8479 | Section_id folded | |
8480 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
8481 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
8482 | *dest_shndx = folded.second; | |
8483 | } | |
3ea0a085 | 8484 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
8485 | if (sec_addr == invalid_address) |
8486 | return false; | |
8487 | ||
3ea0a085 | 8488 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 8489 | *value = sec_addr + sec_off; |
3ea0a085 | 8490 | } |
1611bc4a | 8491 | return true; |
3ea0a085 AM |
8492 | } |
8493 | ||
42cacb20 DE |
8494 | // Perform a relocation. |
8495 | ||
8496 | template<int size, bool big_endian> | |
8497 | inline bool | |
8498 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 8499 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 8500 | unsigned int, |
d83ce4e3 AM |
8501 | Target_powerpc* target, |
8502 | Output_section* os, | |
8503 | size_t relnum, | |
91a65d2f | 8504 | const unsigned char* preloc, |
d83ce4e3 AM |
8505 | const Sized_symbol<size>* gsym, |
8506 | const Symbol_value<size>* psymval, | |
8507 | unsigned char* view, | |
c9269dff AM |
8508 | Address address, |
8509 | section_size_type view_size) | |
42cacb20 | 8510 | { |
23cedd1d AM |
8511 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
8512 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; | |
8513 | typedef typename elfcpp::Rela<size, big_endian> Reltype; | |
8514 | ||
0e804863 ILT |
8515 | if (view == NULL) |
8516 | return true; | |
8517 | ||
34e0882b AM |
8518 | if (target->replace_tls_get_addr(gsym)) |
8519 | gsym = static_cast<const Sized_symbol<size>*>(target->tls_get_addr_opt()); | |
8520 | ||
91a65d2f AM |
8521 | const elfcpp::Rela<size, big_endian> rela(preloc); |
8522 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
34e0882b | 8523 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) |
dd93cd0a | 8524 | { |
e3deeb9c AM |
8525 | case Track_tls::NOT_EXPECTED: |
8526 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8527 | _("__tls_get_addr call lacks marker reloc")); | |
8528 | break; | |
8529 | case Track_tls::EXPECTED: | |
8530 | // We have already complained. | |
8531 | break; | |
8532 | case Track_tls::SKIP: | |
23cedd1d AM |
8533 | if (is_plt16_reloc<size>(r_type) |
8534 | || r_type == elfcpp::R_POWERPC_PLTSEQ) | |
8535 | { | |
8536 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8537 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
8538 | } | |
8539 | else if (size == 64 && r_type == elfcpp::R_POWERPC_PLTCALL) | |
8540 | { | |
8541 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8542 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, nop); | |
8543 | } | |
e3deeb9c AM |
8544 | return true; |
8545 | case Track_tls::NORMAL: | |
8546 | break; | |
dd93cd0a | 8547 | } |
dd93cd0a | 8548 | |
dcfc7dd4 AM |
8549 | // Offset from start of insn to d-field reloc. |
8550 | const int d_offset = big_endian ? 2 : 0; | |
8551 | ||
3ea0a085 AM |
8552 | Powerpc_relobj<size, big_endian>* const object |
8553 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 8554 | Address value = 0; |
0cfb0717 | 8555 | bool has_stub_value = false; |
7ee7ff70 | 8556 | bool localentry0 = false; |
e5d5f5ed | 8557 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
08be3224 AM |
8558 | bool has_plt_offset |
8559 | = (gsym != NULL | |
88b8e639 | 8560 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
08be3224 AM |
8561 | : object->local_has_plt_offset(r_sym)); |
8562 | if (has_plt_offset | |
8563 | && !is_plt16_reloc<size>(r_type) | |
23cedd1d AM |
8564 | && r_type != elfcpp::R_POWERPC_PLTSEQ |
8565 | && r_type != elfcpp::R_POWERPC_PLTCALL | |
b3ccdeb5 | 8566 | && (!psymval->is_ifunc_symbol() |
9055360d | 8567 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 8568 | { |
9055360d AM |
8569 | if (size == 64 |
8570 | && gsym != NULL | |
8571 | && target->abiversion() >= 2 | |
8572 | && !parameters->options().output_is_position_independent() | |
8573 | && !is_branch_reloc(r_type)) | |
ec661b9d | 8574 | { |
faa2211d AM |
8575 | Address off = target->glink_section()->find_global_entry(gsym); |
8576 | if (off != invalid_address) | |
6ec65f28 AM |
8577 | { |
8578 | value = target->glink_section()->global_entry_address() + off; | |
8579 | has_stub_value = true; | |
8580 | } | |
ec661b9d | 8581 | } |
c9824451 | 8582 | else |
9055360d | 8583 | { |
64b5d6d7 AM |
8584 | Stub_table<size, big_endian>* stub_table = NULL; |
8585 | if (target->stub_tables().size() == 1) | |
8586 | stub_table = target->stub_tables()[0]; | |
8587 | if (stub_table == NULL | |
8588 | && !(size == 32 | |
8589 | && gsym != NULL | |
8590 | && !parameters->options().output_is_position_independent() | |
8591 | && !is_branch_reloc(r_type))) | |
8592 | stub_table = object->stub_table(relinfo->data_shndx); | |
9055360d AM |
8593 | if (stub_table == NULL) |
8594 | { | |
64b5d6d7 AM |
8595 | // This is a ref from a data section to an ifunc symbol, |
8596 | // or a non-branch reloc for which we always want to use | |
8597 | // one set of stubs for resolving function addresses. | |
9055360d AM |
8598 | if (target->stub_tables().size() != 0) |
8599 | stub_table = target->stub_tables()[0]; | |
8600 | } | |
faa2211d AM |
8601 | if (stub_table != NULL) |
8602 | { | |
7e57d19e | 8603 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 8604 | if (gsym != NULL) |
7e57d19e | 8605 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
8606 | rela.get_r_addend()); |
8607 | else | |
7e57d19e | 8608 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 8609 | rela.get_r_addend()); |
7e57d19e | 8610 | if (ent != NULL) |
faa2211d | 8611 | { |
7e57d19e AM |
8612 | value = stub_table->stub_address() + ent->off_; |
8613 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
8614 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
8615 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
8616 | if (size == 64 | |
8617 | && ent->r2save_ | |
8618 | && relnum + 1 < reloc_count) | |
8619 | { | |
8620 | Reltype next_rela(preloc + reloc_size); | |
8621 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
8622 | == elfcpp::R_PPC64_TOCSAVE | |
8623 | && next_rela.get_r_offset() == rela.get_r_offset() + 4) | |
8624 | value += 4; | |
8625 | } | |
7ee7ff70 | 8626 | localentry0 = ent->localentry0_; |
faa2211d AM |
8627 | has_stub_value = true; |
8628 | } | |
8629 | } | |
9055360d | 8630 | } |
faa2211d AM |
8631 | // We don't care too much about bogus debug references to |
8632 | // non-local functions, but otherwise there had better be a plt | |
8633 | // call stub or global entry stub as appropriate. | |
8634 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 8635 | } |
cf43a2fe | 8636 | |
08be3224 AM |
8637 | if (has_plt_offset && is_plt16_reloc<size>(r_type)) |
8638 | { | |
8639 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
8640 | if (gsym) | |
8641 | value = target->plt_off(gsym, &plt); | |
8642 | else | |
8643 | value = target->plt_off(object, r_sym, &plt); | |
8644 | value += plt->address(); | |
8645 | ||
8646 | if (size == 64) | |
8647 | value -= (target->got_section()->output_section()->address() | |
8648 | + object->toc_base_offset()); | |
8649 | else if (parameters->options().output_is_position_independent()) | |
8650 | { | |
8651 | if (rela.get_r_addend() >= 32768) | |
8652 | { | |
8653 | unsigned int got2 = object->got2_shndx(); | |
8654 | value -= (object->get_output_section_offset(got2) | |
8655 | + object->output_section(got2)->address() | |
8656 | + rela.get_r_addend()); | |
8657 | } | |
8658 | else | |
8659 | value -= (target->got_section()->address() | |
8660 | + target->got_section()->g_o_t()); | |
8661 | } | |
8662 | } | |
23cedd1d AM |
8663 | else if (!has_plt_offset |
8664 | && (is_plt16_reloc<size>(r_type) | |
8665 | || r_type == elfcpp::R_POWERPC_PLTSEQ)) | |
8666 | { | |
8667 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8668 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
8669 | r_type = elfcpp::R_POWERPC_NONE; | |
8670 | } | |
08be3224 AM |
8671 | else if (r_type == elfcpp::R_POWERPC_GOT16 |
8672 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
8673 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
8674 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
8675 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
8676 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 8677 | { |
cf43a2fe AM |
8678 | if (gsym != NULL) |
8679 | { | |
8680 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
8681 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
8682 | } | |
8683 | else | |
8684 | { | |
cf43a2fe AM |
8685 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
8686 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
8687 | } | |
dd93cd0a | 8688 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
8689 | } |
8690 | else if (r_type == elfcpp::R_PPC64_TOC) | |
8691 | { | |
c9269dff | 8692 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 8693 | + object->toc_base_offset()); |
cf43a2fe AM |
8694 | } |
8695 | else if (gsym != NULL | |
8696 | && (r_type == elfcpp::R_POWERPC_REL24 | |
8697 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 8698 | && has_stub_value) |
cf43a2fe | 8699 | { |
c9269dff AM |
8700 | if (size == 64) |
8701 | { | |
8702 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
8703 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
34e0882b AM |
8704 | bool can_plt_call = localentry0 || target->is_tls_get_addr_opt(gsym); |
8705 | if (!can_plt_call && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 8706 | { |
3ea0a085 | 8707 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 8708 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
8709 | if ((insn & 1) != 0 |
8710 | && (insn2 == nop | |
8711 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 8712 | { |
b4f7960d AM |
8713 | elfcpp::Swap<32, big_endian>:: |
8714 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
8715 | can_plt_call = true; |
8716 | } | |
8717 | } | |
8718 | if (!can_plt_call) | |
3ea0a085 AM |
8719 | { |
8720 | // If we don't have a branch and link followed by a nop, | |
8721 | // we can't go via the plt because there is no place to | |
8722 | // put a toc restoring instruction. | |
8723 | // Unless we know we won't be returning. | |
8724 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
8725 | can_plt_call = true; | |
8726 | } | |
8727 | if (!can_plt_call) | |
8728 | { | |
ba8ca3e7 AM |
8729 | // g++ as of 20130507 emits self-calls without a |
8730 | // following nop. This is arguably wrong since we have | |
8731 | // conflicting information. On the one hand a global | |
8732 | // symbol and on the other a local call sequence, but | |
8733 | // don't error for this special case. | |
8734 | // It isn't possible to cheaply verify we have exactly | |
8735 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 8736 | bool ok = false; |
c9824451 | 8737 | Address code = value; |
3ea0a085 AM |
8738 | if (gsym->source() == Symbol::FROM_OBJECT |
8739 | && gsym->object() == object) | |
8740 | { | |
9055360d AM |
8741 | unsigned int dest_shndx = 0; |
8742 | if (target->abiversion() < 2) | |
8743 | { | |
8744 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
8745 | code = psymval->value(object, addend); |
8746 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
8747 | &code, &dest_shndx); | |
9055360d | 8748 | } |
3ea0a085 AM |
8749 | bool is_ordinary; |
8750 | if (dest_shndx == 0) | |
8751 | dest_shndx = gsym->shndx(&is_ordinary); | |
8752 | ok = dest_shndx == relinfo->data_shndx; | |
8753 | } | |
8754 | if (!ok) | |
c9824451 AM |
8755 | { |
8756 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8757 | _("call lacks nop, can't restore toc; " | |
8758 | "recompile with -fPIC")); | |
8759 | value = code; | |
8760 | } | |
3ea0a085 | 8761 | } |
c9269dff | 8762 | } |
cf43a2fe | 8763 | } |
dd93cd0a AM |
8764 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
8765 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8766 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8767 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8768 | { | |
8769 | // First instruction of a global dynamic sequence, arg setup insn. | |
8770 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8771 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8772 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
8773 | if (tls_type == tls::TLSOPT_NONE) | |
8774 | got_type = GOT_TYPE_TLSGD; | |
8775 | else if (tls_type == tls::TLSOPT_TO_IE) | |
8776 | got_type = GOT_TYPE_TPREL; | |
8777 | if (got_type != GOT_TYPE_STANDARD) | |
8778 | { | |
8779 | if (gsym != NULL) | |
8780 | { | |
8781 | gold_assert(gsym->has_got_offset(got_type)); | |
8782 | value = gsym->got_offset(got_type); | |
8783 | } | |
8784 | else | |
8785 | { | |
dd93cd0a AM |
8786 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
8787 | value = object->local_got_offset(r_sym, got_type); | |
8788 | } | |
8789 | value -= target->got_section()->got_base_offset(object); | |
8790 | } | |
8791 | if (tls_type == tls::TLSOPT_TO_IE) | |
8792 | { | |
8793 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8794 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8795 | { | |
dcfc7dd4 | 8796 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8797 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8798 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
8799 | if (size == 32) | |
8800 | insn |= 32 << 26; // lwz | |
8801 | else | |
8802 | insn |= 58 << 26; // ld | |
8803 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8804 | } | |
8805 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8806 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8807 | } | |
8808 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8809 | { | |
8810 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8811 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8812 | { | |
dcfc7dd4 | 8813 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8814 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8815 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8816 | if (size == 32) |
0f81d3f0 AM |
8817 | insn |= addis_0_2; |
8818 | else | |
8819 | insn |= addis_0_13; | |
dd93cd0a AM |
8820 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8821 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8822 | value = psymval->value(object, rela.get_r_addend()); | |
8823 | } | |
8824 | else | |
8825 | { | |
dcfc7dd4 | 8826 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8827 | Insn insn = nop; |
8828 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8829 | r_type = elfcpp::R_POWERPC_NONE; | |
8830 | } | |
8831 | } | |
8832 | } | |
8833 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8834 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8835 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8836 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8837 | { | |
8838 | // First instruction of a local dynamic sequence, arg setup insn. | |
8839 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8840 | if (tls_type == tls::TLSOPT_NONE) | |
8841 | { | |
8842 | value = target->tlsld_got_offset(); | |
8843 | value -= target->got_section()->got_base_offset(object); | |
8844 | } | |
8845 | else | |
8846 | { | |
8847 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8848 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8849 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8850 | { | |
dcfc7dd4 | 8851 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8852 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8853 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8854 | if (size == 32) |
0f81d3f0 AM |
8855 | insn |= addis_0_2; |
8856 | else | |
8857 | insn |= addis_0_13; | |
dd93cd0a AM |
8858 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8859 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 8860 | value = dtp_offset; |
dd93cd0a AM |
8861 | } |
8862 | else | |
8863 | { | |
dcfc7dd4 | 8864 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8865 | Insn insn = nop; |
8866 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8867 | r_type = elfcpp::R_POWERPC_NONE; | |
8868 | } | |
8869 | } | |
8870 | } | |
8871 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
8872 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
8873 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
8874 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
8875 | { | |
8876 | // Accesses relative to a local dynamic sequence address, | |
8877 | // no optimisation here. | |
8878 | if (gsym != NULL) | |
8879 | { | |
8880 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
8881 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
8882 | } | |
8883 | else | |
8884 | { | |
dd93cd0a AM |
8885 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
8886 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
8887 | } | |
8888 | value -= target->got_section()->got_base_offset(object); | |
8889 | } | |
8890 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8891 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8892 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8893 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8894 | { | |
8895 | // First instruction of initial exec sequence. | |
8896 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8897 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8898 | if (tls_type == tls::TLSOPT_NONE) | |
8899 | { | |
8900 | if (gsym != NULL) | |
8901 | { | |
8902 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
8903 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
8904 | } | |
8905 | else | |
8906 | { | |
dd93cd0a AM |
8907 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
8908 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
8909 | } | |
8910 | value -= target->got_section()->got_base_offset(object); | |
8911 | } | |
8912 | else | |
8913 | { | |
8914 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8915 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8916 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8917 | { | |
dcfc7dd4 | 8918 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8919 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8920 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
8921 | if (size == 32) | |
8922 | insn |= addis_0_2; | |
8923 | else | |
8924 | insn |= addis_0_13; | |
8925 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8926 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8927 | value = psymval->value(object, rela.get_r_addend()); | |
8928 | } | |
8929 | else | |
8930 | { | |
dcfc7dd4 | 8931 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8932 | Insn insn = nop; |
8933 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8934 | r_type = elfcpp::R_POWERPC_NONE; | |
8935 | } | |
8936 | } | |
8937 | } | |
8938 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8939 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8940 | { | |
8941 | // Second instruction of a global dynamic sequence, | |
8942 | // the __tls_get_addr call | |
e3deeb9c | 8943 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8944 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
8945 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8946 | if (tls_type != tls::TLSOPT_NONE) | |
8947 | { | |
8948 | if (tls_type == tls::TLSOPT_TO_IE) | |
8949 | { | |
8950 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8951 | Insn insn = add_3_3_13; | |
8952 | if (size == 32) | |
8953 | insn = add_3_3_2; | |
8954 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8955 | r_type = elfcpp::R_POWERPC_NONE; | |
8956 | } | |
8957 | else | |
8958 | { | |
8959 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8960 | Insn insn = addi_3_3; | |
8961 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8962 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8963 | view += d_offset; |
dd93cd0a AM |
8964 | value = psymval->value(object, rela.get_r_addend()); |
8965 | } | |
e3deeb9c | 8966 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
8967 | } |
8968 | } | |
8969 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8970 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8971 | { | |
8972 | // Second instruction of a local dynamic sequence, | |
8973 | // the __tls_get_addr call | |
e3deeb9c | 8974 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8975 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
8976 | if (tls_type == tls::TLSOPT_TO_LE) | |
8977 | { | |
8978 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8979 | Insn insn = addi_3_3; | |
8980 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 8981 | this->skip_next_tls_get_addr_call(); |
dd93cd0a | 8982 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
dcfc7dd4 | 8983 | view += d_offset; |
7404fe1b | 8984 | value = dtp_offset; |
dd93cd0a AM |
8985 | } |
8986 | } | |
8987 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8988 | { | |
8989 | // Second instruction of an initial exec sequence | |
8990 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8991 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8992 | if (tls_type == tls::TLSOPT_TO_LE) | |
8993 | { | |
8994 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8995 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8996 | unsigned int reg = size == 32 ? 2 : 13; | |
8997 | insn = at_tls_transform(insn, reg); | |
8998 | gold_assert(insn != 0); | |
8999 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9000 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 9001 | view += d_offset; |
dd93cd0a AM |
9002 | value = psymval->value(object, rela.get_r_addend()); |
9003 | } | |
9004 | } | |
0cfb0717 | 9005 | else if (!has_stub_value) |
cf43a2fe | 9006 | { |
23cedd1d AM |
9007 | if (!has_plt_offset && r_type == elfcpp::R_POWERPC_PLTCALL) |
9008 | { | |
9009 | // PLTCALL without plt entry => convert to direct call | |
9010 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9011 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9012 | insn = (insn & 1) | b; | |
9013 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9014 | if (size == 32) | |
9015 | r_type = elfcpp::R_PPC_PLTREL24; | |
9016 | else | |
9017 | r_type = elfcpp::R_POWERPC_REL24; | |
9018 | } | |
dd93cd0a | 9019 | Address addend = 0; |
08be3224 AM |
9020 | if (!(size == 32 |
9021 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
9022 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
9023 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
9024 | || r_type == elfcpp::R_POWERPC_PLT16_HA))) | |
cf43a2fe | 9025 | addend = rela.get_r_addend(); |
c9824451 | 9026 | value = psymval->value(object, addend); |
dd93cd0a | 9027 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
9028 | { |
9029 | if (target->abiversion() >= 2) | |
9030 | { | |
9031 | if (gsym != NULL) | |
9032 | value += object->ppc64_local_entry_offset(gsym); | |
9033 | else | |
9034 | value += object->ppc64_local_entry_offset(r_sym); | |
9035 | } | |
9036 | else | |
1611bc4a AM |
9037 | { |
9038 | unsigned int dest_shndx; | |
9039 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
9040 | &value, &dest_shndx); | |
9041 | } | |
9055360d | 9042 | } |
cbcb23fa | 9043 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
9044 | if (max_branch_offset != 0 |
9045 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
9046 | { | |
9047 | Stub_table<size, big_endian>* stub_table | |
9048 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
9049 | if (stub_table != NULL) |
9050 | { | |
9051 | Address off = stub_table->find_long_branch_entry(object, value); | |
9052 | if (off != invalid_address) | |
0cfb0717 AM |
9053 | { |
9054 | value = (stub_table->stub_address() + stub_table->plt_size() | |
9055 | + off); | |
9056 | has_stub_value = true; | |
9057 | } | |
0cfdc767 | 9058 | } |
ec661b9d | 9059 | } |
42cacb20 DE |
9060 | } |
9061 | ||
42cacb20 DE |
9062 | switch (r_type) |
9063 | { | |
dd93cd0a AM |
9064 | case elfcpp::R_PPC64_REL64: |
9065 | case elfcpp::R_POWERPC_REL32: | |
9066 | case elfcpp::R_POWERPC_REL24: | |
9067 | case elfcpp::R_PPC_PLTREL24: | |
9068 | case elfcpp::R_PPC_LOCAL24PC: | |
9069 | case elfcpp::R_POWERPC_REL16: | |
9070 | case elfcpp::R_POWERPC_REL16_LO: | |
9071 | case elfcpp::R_POWERPC_REL16_HI: | |
9072 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 9073 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a AM |
9074 | case elfcpp::R_POWERPC_REL14: |
9075 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9076 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
9077 | value -= address; | |
9078 | break; | |
9079 | ||
42cacb20 DE |
9080 | case elfcpp::R_PPC64_TOC16: |
9081 | case elfcpp::R_PPC64_TOC16_LO: | |
9082 | case elfcpp::R_PPC64_TOC16_HI: | |
9083 | case elfcpp::R_PPC64_TOC16_HA: | |
9084 | case elfcpp::R_PPC64_TOC16_DS: | |
9085 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 9086 | // Subtract the TOC base address. |
c9269dff | 9087 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 9088 | + object->toc_base_offset()); |
42cacb20 DE |
9089 | break; |
9090 | ||
cf43a2fe AM |
9091 | case elfcpp::R_POWERPC_SECTOFF: |
9092 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
9093 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
9094 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
9095 | case elfcpp::R_PPC64_SECTOFF_DS: | |
9096 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
9097 | if (os != NULL) | |
9098 | value -= os->address(); | |
42cacb20 DE |
9099 | break; |
9100 | ||
dd93cd0a AM |
9101 | case elfcpp::R_PPC64_TPREL16_DS: |
9102 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
9103 | case elfcpp::R_PPC64_TPREL16_HIGH: |
9104 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 9105 | if (size != 64) |
f9c6b907 | 9106 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 9107 | break; |
d8e90251 | 9108 | // Fall through. |
dd93cd0a AM |
9109 | case elfcpp::R_POWERPC_TPREL16: |
9110 | case elfcpp::R_POWERPC_TPREL16_LO: | |
9111 | case elfcpp::R_POWERPC_TPREL16_HI: | |
9112 | case elfcpp::R_POWERPC_TPREL16_HA: | |
9113 | case elfcpp::R_POWERPC_TPREL: | |
9114 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9115 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9116 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9117 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9118 | // tls symbol values are relative to tls_segment()->vaddr() | |
9119 | value -= tp_offset; | |
9120 | break; | |
9121 | ||
9122 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9123 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
9124 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
9125 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
9126 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
9127 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
9128 | if (size != 64) | |
9129 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
9130 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
9131 | break; | |
d8e90251 | 9132 | // Fall through. |
dd93cd0a AM |
9133 | case elfcpp::R_POWERPC_DTPREL16: |
9134 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
9135 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
9136 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9137 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
9138 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
9139 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
9140 | // tls symbol values are relative to tls_segment()->vaddr() |
9141 | value -= dtp_offset; | |
9142 | break; | |
9143 | ||
45965137 AM |
9144 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
9145 | if (gsym != NULL) | |
9146 | value += object->ppc64_local_entry_offset(gsym); | |
9147 | else | |
9148 | value += object->ppc64_local_entry_offset(r_sym); | |
9149 | break; | |
9150 | ||
42cacb20 DE |
9151 | default: |
9152 | break; | |
9153 | } | |
9154 | ||
dd93cd0a | 9155 | Insn branch_bit = 0; |
42cacb20 DE |
9156 | switch (r_type) |
9157 | { | |
dd93cd0a AM |
9158 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
9159 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9160 | branch_bit = 1 << 21; | |
d8e90251 | 9161 | // Fall through. |
dd93cd0a AM |
9162 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
9163 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
9164 | { | |
9165 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9166 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9167 | insn &= ~(1 << 21); | |
9168 | insn |= branch_bit; | |
9169 | if (this->is_isa_v2) | |
9170 | { | |
9171 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
9172 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
9173 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
9174 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
9175 | insn |= 0x02 << 21; | |
9176 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
9177 | insn |= 0x08 << 21; | |
9178 | else | |
9179 | break; | |
9180 | } | |
9181 | else | |
9182 | { | |
9183 | // Invert 'y' bit if not the default. | |
9184 | if (static_cast<Signed_address>(value) < 0) | |
9185 | insn ^= 1 << 21; | |
9186 | } | |
9187 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9188 | } | |
9189 | break; | |
9190 | ||
08be3224 AM |
9191 | case elfcpp::R_POWERPC_PLT16_HA: |
9192 | if (size == 32 | |
9193 | && !parameters->options().output_is_position_independent()) | |
9194 | { | |
9195 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
9196 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9197 | ||
9198 | // Convert addis to lis. | |
9199 | if ((insn & (0x3f << 26)) == 15u << 26 | |
9200 | && (insn & (0x1f << 16)) != 0) | |
9201 | { | |
9202 | insn &= ~(0x1f << 16); | |
9203 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9204 | } | |
9205 | } | |
9206 | break; | |
9207 | ||
dd93cd0a AM |
9208 | default: |
9209 | break; | |
9210 | } | |
9211 | ||
aba6bc71 AM |
9212 | if (size == 64) |
9213 | { | |
aba6bc71 AM |
9214 | switch (r_type) |
9215 | { | |
9216 | default: | |
9217 | break; | |
9218 | ||
5edad15d AM |
9219 | // Multi-instruction sequences that access the GOT/TOC can |
9220 | // be optimized, eg. | |
9221 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
9222 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
9223 | // and | |
9224 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
9225 | // to nop; addi rb,r2,x@toc; | |
9226 | // FIXME: the @got sequence shown above is not yet | |
9227 | // optimized. Note that gcc as of 2017-01-07 doesn't use | |
9228 | // the ELF @got relocs except for TLS, instead using the | |
9229 | // PowerOpen variant of a compiler managed GOT (called TOC). | |
9230 | // The PowerOpen TOC sequence equivalent to the first | |
9231 | // example is optimized. | |
aba6bc71 AM |
9232 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
9233 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9234 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9235 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9236 | case elfcpp::R_POWERPC_GOT16_HA: | |
9237 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 9238 | if (parameters->options().toc_optimize()) |
aba6bc71 | 9239 | { |
dcfc7dd4 | 9240 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 9241 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
9242 | if (r_type == elfcpp::R_PPC64_TOC16_HA |
9243 | && object->make_toc_relative(target, &value)) | |
9244 | { | |
9245 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
9246 | == ((15u << 26) | (2 << 16))); | |
9247 | } | |
9248 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
9249 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
9250 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
9251 | { |
9252 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9253 | return true; | |
9254 | } | |
9255 | } | |
9256 | break; | |
9257 | ||
9258 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
9259 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9260 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9261 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9262 | case elfcpp::R_POWERPC_GOT16_LO: | |
9263 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9264 | case elfcpp::R_PPC64_TOC16_LO: | |
9265 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 9266 | if (parameters->options().toc_optimize()) |
aba6bc71 | 9267 | { |
dcfc7dd4 | 9268 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 9269 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
9270 | bool changed = false; |
9271 | if (r_type == elfcpp::R_PPC64_TOC16_LO_DS | |
9272 | && object->make_toc_relative(target, &value)) | |
9273 | { | |
9274 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
9275 | insn ^= (14u << 26) ^ (58u << 26); | |
9276 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
9277 | changed = true; | |
9278 | } | |
9279 | if (ok_lo_toc_insn(insn, r_type) | |
9280 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
9281 | { |
9282 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
9283 | { | |
9284 | // Transform addic to addi when we change reg. | |
9285 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
9286 | insn |= (14u << 26) | (2 << 16); | |
9287 | } | |
9288 | else | |
9289 | { | |
9290 | insn &= ~(0x1f << 16); | |
9291 | insn |= 2 << 16; | |
9292 | } | |
5edad15d | 9293 | changed = true; |
aba6bc71 | 9294 | } |
5edad15d AM |
9295 | if (changed) |
9296 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
9297 | } |
9298 | break; | |
549dba71 | 9299 | |
9a23f96e AM |
9300 | case elfcpp::R_POWERPC_TPREL16_HA: |
9301 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
9302 | { | |
9303 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
9304 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9305 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9306 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
9307 | ; | |
9308 | else | |
9309 | { | |
9310 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9311 | return true; | |
9312 | } | |
9313 | } | |
9314 | break; | |
9315 | ||
9316 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9317 | if (size == 32) | |
9318 | // R_PPC_TLSGD, R_PPC_TLSLD | |
9319 | break; | |
9320 | // Fall through. | |
9321 | case elfcpp::R_POWERPC_TPREL16_LO: | |
9322 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
9323 | { | |
9324 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
9325 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9326 | insn &= ~(0x1f << 16); | |
9327 | insn |= (size == 32 ? 2 : 13) << 16; | |
9328 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9329 | } | |
9330 | break; | |
9331 | ||
549dba71 AM |
9332 | case elfcpp::R_PPC64_ENTRY: |
9333 | value = (target->got_section()->output_section()->address() | |
9334 | + object->toc_base_offset()); | |
9335 | if (value + 0x80008000 <= 0xffffffff | |
9336 | && !parameters->options().output_is_position_independent()) | |
9337 | { | |
9338 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9339 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9340 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
9341 | ||
9342 | if ((insn1 & ~0xfffc) == ld_2_12 | |
9343 | && insn2 == add_2_2_12) | |
9344 | { | |
9345 | insn1 = lis_2 + ha(value); | |
9346 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
9347 | insn2 = addi_2_2 + l(value); | |
9348 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
9349 | return true; | |
9350 | } | |
9351 | } | |
9352 | else | |
9353 | { | |
9354 | value -= address; | |
9355 | if (value + 0x80008000 <= 0xffffffff) | |
9356 | { | |
9357 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9358 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9359 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
9360 | ||
9361 | if ((insn1 & ~0xfffc) == ld_2_12 | |
9362 | && insn2 == add_2_2_12) | |
9363 | { | |
9364 | insn1 = addis_2_12 + ha(value); | |
9365 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
9366 | insn2 = addi_2_2 + l(value); | |
9367 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
9368 | return true; | |
9369 | } | |
9370 | } | |
9371 | } | |
9372 | break; | |
e3a7574e AM |
9373 | |
9374 | case elfcpp::R_POWERPC_REL16_LO: | |
9375 | // If we are generating a non-PIC executable, edit | |
9376 | // 0: addis 2,12,.TOC.-0b@ha | |
9377 | // addi 2,2,.TOC.-0b@l | |
9378 | // used by ELFv2 global entry points to set up r2, to | |
9379 | // lis 2,.TOC.@ha | |
9380 | // addi 2,2,.TOC.@l | |
9381 | // if .TOC. is in range. */ | |
9382 | if (value + address - 4 + 0x80008000 <= 0xffffffff | |
9383 | && relnum != 0 | |
9384 | && preloc != NULL | |
9385 | && target->abiversion() >= 2 | |
9386 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 9387 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
9388 | && gsym != NULL |
9389 | && strcmp(gsym->name(), ".TOC.") == 0) | |
9390 | { | |
0e123f69 | 9391 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
9392 | Reltype prev_rela(preloc - reloc_size); |
9393 | if ((prev_rela.get_r_info() | |
9394 | == elfcpp::elf_r_info<size>(r_sym, | |
9395 | elfcpp::R_POWERPC_REL16_HA)) | |
9396 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
9397 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
9398 | { | |
dcfc7dd4 | 9399 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
9400 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
9401 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9402 | ||
9403 | if ((insn1 & 0xffff0000) == addis_2_12 | |
9404 | && (insn2 & 0xffff0000) == addi_2_2) | |
9405 | { | |
9406 | insn1 = lis_2 + ha(value + address - 4); | |
9407 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
9408 | insn2 = addi_2_2 + l(value + address - 4); | |
9409 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
9410 | if (relinfo->rr) | |
9411 | { | |
9412 | relinfo->rr->set_strategy(relnum - 1, | |
9413 | Relocatable_relocs::RELOC_SPECIAL); | |
9414 | relinfo->rr->set_strategy(relnum, | |
9415 | Relocatable_relocs::RELOC_SPECIAL); | |
9416 | } | |
9417 | return true; | |
9418 | } | |
9419 | } | |
9420 | } | |
9421 | break; | |
aba6bc71 AM |
9422 | } |
9423 | } | |
9424 | ||
f4baf0d4 | 9425 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 9426 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
9427 | switch (r_type) |
9428 | { | |
9429 | case elfcpp::R_POWERPC_ADDR32: | |
9430 | case elfcpp::R_POWERPC_UADDR32: | |
9431 | if (size == 64) | |
f4baf0d4 | 9432 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
9433 | break; |
9434 | ||
9435 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 9436 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 9437 | if (size == 64) |
f4baf0d4 | 9438 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
9439 | break; |
9440 | ||
dd93cd0a | 9441 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 9442 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
9443 | break; |
9444 | ||
b80eed39 AM |
9445 | case elfcpp::R_POWERPC_ADDR16: |
9446 | // We really should have three separate relocations, | |
9447 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
9448 | // and one for insns with 16-bit unsigned fields. | |
9449 | overflow = Reloc::CHECK_BITFIELD; | |
9450 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
9451 | overflow = Reloc::CHECK_LOW_INSN; | |
9452 | break; | |
9453 | ||
f9c6b907 AM |
9454 | case elfcpp::R_POWERPC_ADDR16_HI: |
9455 | case elfcpp::R_POWERPC_ADDR16_HA: | |
9456 | case elfcpp::R_POWERPC_GOT16_HI: | |
9457 | case elfcpp::R_POWERPC_GOT16_HA: | |
9458 | case elfcpp::R_POWERPC_PLT16_HI: | |
9459 | case elfcpp::R_POWERPC_PLT16_HA: | |
9460 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
9461 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
9462 | case elfcpp::R_PPC64_TOC16_HI: | |
9463 | case elfcpp::R_PPC64_TOC16_HA: | |
9464 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
9465 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
9466 | case elfcpp::R_POWERPC_TPREL16_HI: | |
9467 | case elfcpp::R_POWERPC_TPREL16_HA: | |
9468 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
9469 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9470 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
9471 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9472 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9473 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9474 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9475 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9476 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9477 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9478 | case elfcpp::R_POWERPC_REL16_HI: | |
9479 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
9480 | if (size != 32) |
9481 | overflow = Reloc::CHECK_HIGH_INSN; | |
9482 | break; | |
9483 | ||
dd93cd0a AM |
9484 | case elfcpp::R_POWERPC_REL16: |
9485 | case elfcpp::R_PPC64_TOC16: | |
9486 | case elfcpp::R_POWERPC_GOT16: | |
9487 | case elfcpp::R_POWERPC_SECTOFF: | |
9488 | case elfcpp::R_POWERPC_TPREL16: | |
9489 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
9490 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
9491 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
9492 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
9493 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
9494 | overflow = Reloc::CHECK_LOW_INSN; | |
9495 | break; | |
9496 | ||
9497 | case elfcpp::R_POWERPC_ADDR24: | |
9498 | case elfcpp::R_POWERPC_ADDR14: | |
9499 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
9500 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
9501 | case elfcpp::R_PPC64_ADDR16_DS: | |
9502 | case elfcpp::R_POWERPC_REL24: | |
9503 | case elfcpp::R_PPC_PLTREL24: | |
9504 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
9505 | case elfcpp::R_PPC64_TPREL16_DS: |
9506 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9507 | case elfcpp::R_PPC64_TOC16_DS: | |
9508 | case elfcpp::R_PPC64_GOT16_DS: | |
9509 | case elfcpp::R_PPC64_SECTOFF_DS: | |
9510 | case elfcpp::R_POWERPC_REL14: | |
9511 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9512 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 9513 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 9514 | break; |
dd93cd0a | 9515 | } |
42cacb20 | 9516 | |
dcfc7dd4 | 9517 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
9518 | Insn insn = 0; |
9519 | ||
b80eed39 AM |
9520 | if (overflow == Reloc::CHECK_LOW_INSN |
9521 | || overflow == Reloc::CHECK_HIGH_INSN) | |
9522 | { | |
a680de9a | 9523 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 9524 | |
a47622ac AM |
9525 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9526 | overflow = Reloc::CHECK_BITFIELD; | |
9527 | else if (overflow == Reloc::CHECK_LOW_INSN | |
9528 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9529 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9530 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
9531 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
9532 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
9533 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 9534 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
9535 | else |
9536 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
9537 | } |
9538 | ||
a680de9a | 9539 | bool maybe_dq_reloc = false; |
3ea0a085 | 9540 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 9541 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
9542 | switch (r_type) |
9543 | { | |
9544 | case elfcpp::R_POWERPC_NONE: | |
9545 | case elfcpp::R_POWERPC_TLS: | |
9546 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
9547 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
23cedd1d AM |
9548 | case elfcpp::R_POWERPC_PLTSEQ: |
9549 | case elfcpp::R_POWERPC_PLTCALL: | |
42cacb20 DE |
9550 | break; |
9551 | ||
9552 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 9553 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 9554 | case elfcpp::R_PPC64_TOC: |
45965137 | 9555 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
9556 | Reloc::addr64(view, value); |
9557 | break; | |
9558 | ||
9559 | case elfcpp::R_POWERPC_TPREL: | |
9560 | case elfcpp::R_POWERPC_DTPREL: | |
9561 | if (size == 64) | |
9562 | Reloc::addr64(view, value); | |
9563 | else | |
3ea0a085 | 9564 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
9565 | break; |
9566 | ||
9567 | case elfcpp::R_PPC64_UADDR64: | |
9568 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
9569 | break; |
9570 | ||
9571 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 9572 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
9573 | break; |
9574 | ||
acc276d8 | 9575 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 9576 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 9577 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
9578 | break; |
9579 | ||
9580 | case elfcpp::R_POWERPC_ADDR24: | |
9581 | case elfcpp::R_POWERPC_REL24: | |
9582 | case elfcpp::R_PPC_PLTREL24: | |
9583 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 9584 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
9585 | break; |
9586 | ||
dd93cd0a AM |
9587 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
9588 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
9589 | case elfcpp::R_POWERPC_GOT_TPREL16: |
9590 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
9591 | if (size == 64) |
9592 | { | |
ec86f434 | 9593 | // On ppc64 these are all ds form |
a680de9a | 9594 | maybe_dq_reloc = true; |
dd93cd0a AM |
9595 | break; |
9596 | } | |
c25aa1e1 | 9597 | // Fall through. |
cf43a2fe | 9598 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 9599 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 9600 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 9601 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 9602 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
9603 | case elfcpp::R_POWERPC_TPREL16: |
9604 | case elfcpp::R_POWERPC_DTPREL16: | |
9605 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
9606 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 9607 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 9608 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 9609 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 9610 | case elfcpp::R_POWERPC_GOT16_LO: |
08be3224 | 9611 | case elfcpp::R_POWERPC_PLT16_LO: |
cf43a2fe | 9612 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
9613 | case elfcpp::R_POWERPC_TPREL16_LO: |
9614 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
9615 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9616 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
9617 | if (size == 64) |
9618 | status = Reloc::addr16(view, value, overflow); | |
9619 | else | |
9620 | maybe_dq_reloc = true; | |
dd93cd0a AM |
9621 | break; |
9622 | ||
9623 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 9624 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
9625 | break; |
9626 | ||
f9c6b907 AM |
9627 | case elfcpp::R_PPC64_ADDR16_HIGH: |
9628 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9629 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
9630 | if (size == 32) | |
9631 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
9632 | goto unsupp; | |
d8e90251 | 9633 | // Fall through. |
cf43a2fe | 9634 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 9635 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 9636 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 9637 | case elfcpp::R_POWERPC_GOT16_HI: |
08be3224 | 9638 | case elfcpp::R_POWERPC_PLT16_HI: |
cf43a2fe | 9639 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
9640 | case elfcpp::R_POWERPC_TPREL16_HI: |
9641 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
9642 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
9643 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9644 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9645 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9646 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
9647 | break; |
9648 | ||
f9c6b907 AM |
9649 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
9650 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9651 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
9652 | if (size == 32) | |
9653 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
9654 | goto unsupp; | |
d8e90251 | 9655 | // Fall through. |
cf43a2fe | 9656 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 9657 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 9658 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 9659 | case elfcpp::R_POWERPC_GOT16_HA: |
08be3224 | 9660 | case elfcpp::R_POWERPC_PLT16_HA: |
cf43a2fe | 9661 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
9662 | case elfcpp::R_POWERPC_TPREL16_HA: |
9663 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9664 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9665 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9666 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9667 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9668 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
9669 | break; |
9670 | ||
a680de9a PB |
9671 | case elfcpp::R_POWERPC_REL16DX_HA: |
9672 | status = Reloc::addr16dx_ha(view, value, overflow); | |
9673 | break; | |
9674 | ||
dd93cd0a AM |
9675 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
9676 | if (size == 32) | |
9677 | // R_PPC_EMB_NADDR16_LO | |
9678 | goto unsupp; | |
d8e90251 | 9679 | // Fall through. |
dd93cd0a AM |
9680 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
9681 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9682 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
9683 | break; |
9684 | ||
dd93cd0a AM |
9685 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
9686 | if (size == 32) | |
9687 | // R_PPC_EMB_NADDR16_HI | |
9688 | goto unsupp; | |
d8e90251 | 9689 | // Fall through. |
dd93cd0a AM |
9690 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
9691 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9692 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
9693 | break; |
9694 | ||
dd93cd0a AM |
9695 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
9696 | if (size == 32) | |
9697 | // R_PPC_EMB_NADDR16_HA | |
9698 | goto unsupp; | |
d8e90251 | 9699 | // Fall through. |
dd93cd0a AM |
9700 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
9701 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9702 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
9703 | break; |
9704 | ||
dd93cd0a AM |
9705 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
9706 | if (size == 32) | |
9707 | // R_PPC_EMB_SDAI16 | |
9708 | goto unsupp; | |
d8e90251 | 9709 | // Fall through. |
dd93cd0a AM |
9710 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
9711 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9712 | Reloc::addr16_ha3(view, value); | |
9713 | break; | |
9714 | ||
9715 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9716 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
9717 | if (size == 32) | |
9718 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
9719 | goto unsupp; | |
d8e90251 | 9720 | // Fall through. |
dd93cd0a AM |
9721 | case elfcpp::R_PPC64_TPREL16_DS: |
9722 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9723 | if (size == 32) | |
9724 | // R_PPC_TLSGD, R_PPC_TLSLD | |
9725 | break; | |
d8e90251 | 9726 | // Fall through. |
cf43a2fe AM |
9727 | case elfcpp::R_PPC64_ADDR16_DS: |
9728 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
9729 | case elfcpp::R_PPC64_TOC16_DS: |
9730 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
9731 | case elfcpp::R_PPC64_GOT16_DS: |
9732 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
08be3224 | 9733 | case elfcpp::R_PPC64_PLT16_LO_DS: |
cf43a2fe AM |
9734 | case elfcpp::R_PPC64_SECTOFF_DS: |
9735 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 9736 | maybe_dq_reloc = true; |
dd93cd0a AM |
9737 | break; |
9738 | ||
9739 | case elfcpp::R_POWERPC_ADDR14: | |
9740 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
9741 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
9742 | case elfcpp::R_POWERPC_REL14: | |
9743 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9744 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 9745 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
9746 | break; |
9747 | ||
9748 | case elfcpp::R_POWERPC_COPY: | |
9749 | case elfcpp::R_POWERPC_GLOB_DAT: | |
9750 | case elfcpp::R_POWERPC_JMP_SLOT: | |
9751 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 9752 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
9753 | case elfcpp::R_PPC64_JMP_IREL: |
9754 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
9755 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9756 | _("unexpected reloc %u in object file"), | |
9757 | r_type); | |
9758 | break; | |
9759 | ||
7e57d19e | 9760 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 9761 | if (size == 32) |
7e57d19e | 9762 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
9763 | goto unsupp; |
9764 | else | |
9765 | { | |
7e57d19e AM |
9766 | Symbol_location loc; |
9767 | loc.object = relinfo->object; | |
9768 | loc.shndx = relinfo->data_shndx; | |
9769 | loc.offset = rela.get_r_offset(); | |
9770 | Tocsave_loc::const_iterator p = target->tocsave_loc().find(loc); | |
9771 | if (p != target->tocsave_loc().end()) | |
9772 | { | |
9773 | // If we've generated plt calls using this tocsave, then | |
9774 | // the nop needs to be changed to save r2. | |
9775 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9776 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
9777 | elfcpp::Swap<32, big_endian>:: | |
9778 | writeval(iview, std_2_1 + target->stk_toc()); | |
9779 | } | |
dd93cd0a AM |
9780 | } |
9781 | break; | |
9782 | ||
9783 | case elfcpp::R_PPC_EMB_SDA2I16: | |
9784 | case elfcpp::R_PPC_EMB_SDA2REL: | |
9785 | if (size == 32) | |
9786 | goto unsupp; | |
9787 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
9788 | break; |
9789 | ||
dd93cd0a AM |
9790 | case elfcpp::R_POWERPC_PLT32: |
9791 | case elfcpp::R_POWERPC_PLTREL32: | |
dd93cd0a AM |
9792 | case elfcpp::R_PPC_SDAREL16: |
9793 | case elfcpp::R_POWERPC_ADDR30: | |
9794 | case elfcpp::R_PPC64_PLT64: | |
9795 | case elfcpp::R_PPC64_PLTREL64: | |
9796 | case elfcpp::R_PPC64_PLTGOT16: | |
9797 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
9798 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
9799 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
dd93cd0a AM |
9800 | case elfcpp::R_PPC64_PLTGOT16_DS: |
9801 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
9802 | case elfcpp::R_PPC_EMB_RELSDA: |
9803 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 9804 | default: |
dd93cd0a | 9805 | unsupp: |
42cacb20 DE |
9806 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9807 | _("unsupported reloc %u"), | |
9808 | r_type); | |
9809 | break; | |
9810 | } | |
a680de9a PB |
9811 | |
9812 | if (maybe_dq_reloc) | |
9813 | { | |
9814 | if (insn == 0) | |
9815 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9816 | ||
9817 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
9818 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
9819 | && (insn & 3) == 1)) | |
9820 | status = Reloc::addr16_dq(view, value, overflow); | |
9821 | else if (size == 64 | |
9822 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
9823 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
9824 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
9825 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
9826 | status = Reloc::addr16_ds(view, value, overflow); | |
9827 | else | |
9828 | status = Reloc::addr16(view, value, overflow); | |
9829 | } | |
9830 | ||
0cfb0717 | 9831 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
9832 | && (has_stub_value |
9833 | || !(gsym != NULL | |
282c9750 | 9834 | && gsym->is_undefined() |
3ffaac20 | 9835 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
9836 | { |
9837 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
9838 | _("relocation overflow")); | |
9839 | if (has_stub_value) | |
9840 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
9841 | } | |
42cacb20 DE |
9842 | |
9843 | return true; | |
9844 | } | |
9845 | ||
42cacb20 DE |
9846 | // Relocate section data. |
9847 | ||
9848 | template<int size, bool big_endian> | |
9849 | void | |
9850 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
9851 | const Relocate_info<size, big_endian>* relinfo, |
9852 | unsigned int sh_type, | |
9853 | const unsigned char* prelocs, | |
9854 | size_t reloc_count, | |
9855 | Output_section* output_section, | |
9856 | bool needs_special_offset_handling, | |
9857 | unsigned char* view, | |
c9269dff | 9858 | Address address, |
d83ce4e3 AM |
9859 | section_size_type view_size, |
9860 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
9861 | { |
9862 | typedef Target_powerpc<size, big_endian> Powerpc; | |
9863 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
9864 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
9865 | Powerpc_comdat_behavior; | |
4d625b70 CC |
9866 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9867 | Classify_reloc; | |
42cacb20 DE |
9868 | |
9869 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9870 | ||
4d625b70 CC |
9871 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
9872 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
9873 | relinfo, |
9874 | this, | |
9875 | prelocs, | |
9876 | reloc_count, | |
9877 | output_section, | |
9878 | needs_special_offset_handling, | |
9879 | view, | |
9880 | address, | |
364c7fa5 ILT |
9881 | view_size, |
9882 | reloc_symbol_changes); | |
42cacb20 DE |
9883 | } |
9884 | ||
4d625b70 | 9885 | template<int size, bool big_endian> |
cf43a2fe | 9886 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 9887 | { |
cf43a2fe | 9888 | public: |
0e123f69 AM |
9889 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
9890 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
9891 | static const int sh_type = elfcpp::SHT_RELA; |
9892 | ||
9893 | // Return the symbol referred to by the relocation. | |
9894 | static inline unsigned int | |
9895 | get_r_sym(const Reltype* reloc) | |
9896 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
9897 | ||
9898 | // Return the type of the relocation. | |
9899 | static inline unsigned int | |
9900 | get_r_type(const Reltype* reloc) | |
9901 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
9902 | ||
cf43a2fe AM |
9903 | // Return the strategy to use for a local symbol which is not a |
9904 | // section symbol, given the relocation type. | |
9905 | inline Relocatable_relocs::Reloc_strategy | |
9906 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
9907 | { | |
9908 | if (r_type == 0 && r_sym == 0) | |
9909 | return Relocatable_relocs::RELOC_DISCARD; | |
9910 | return Relocatable_relocs::RELOC_COPY; | |
9911 | } | |
9912 | ||
9913 | // Return the strategy to use for a local symbol which is a section | |
9914 | // symbol, given the relocation type. | |
9915 | inline Relocatable_relocs::Reloc_strategy | |
9916 | local_section_strategy(unsigned int, Relobj*) | |
9917 | { | |
9918 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
9919 | } | |
9920 | ||
9921 | // Return the strategy to use for a global symbol, given the | |
9922 | // relocation type, the object, and the symbol index. | |
9923 | inline Relocatable_relocs::Reloc_strategy | |
9924 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
9925 | { | |
08be3224 AM |
9926 | if (size == 32 |
9927 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
9928 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
9929 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
9930 | || r_type == elfcpp::R_POWERPC_PLT16_HA)) | |
cf43a2fe AM |
9931 | return Relocatable_relocs::RELOC_SPECIAL; |
9932 | return Relocatable_relocs::RELOC_COPY; | |
9933 | } | |
9934 | }; | |
42cacb20 DE |
9935 | |
9936 | // Scan the relocs during a relocatable link. | |
9937 | ||
9938 | template<int size, bool big_endian> | |
9939 | void | |
9940 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
9941 | Symbol_table* symtab, |
9942 | Layout* layout, | |
9943 | Sized_relobj_file<size, big_endian>* object, | |
9944 | unsigned int data_shndx, | |
9945 | unsigned int sh_type, | |
9946 | const unsigned char* prelocs, | |
9947 | size_t reloc_count, | |
9948 | Output_section* output_section, | |
9949 | bool needs_special_offset_handling, | |
9950 | size_t local_symbol_count, | |
9951 | const unsigned char* plocal_symbols, | |
9952 | Relocatable_relocs* rr) | |
42cacb20 | 9953 | { |
4d625b70 CC |
9954 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
9955 | ||
42cacb20 DE |
9956 | gold_assert(sh_type == elfcpp::SHT_RELA); |
9957 | ||
4d625b70 | 9958 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
9959 | symtab, |
9960 | layout, | |
9961 | object, | |
9962 | data_shndx, | |
9963 | prelocs, | |
9964 | reloc_count, | |
9965 | output_section, | |
9966 | needs_special_offset_handling, | |
9967 | local_symbol_count, | |
9968 | plocal_symbols, | |
9969 | rr); | |
9970 | } | |
9971 | ||
4d625b70 CC |
9972 | // Scan the relocs for --emit-relocs. |
9973 | ||
9974 | template<int size, bool big_endian> | |
9975 | void | |
9976 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
9977 | Symbol_table* symtab, | |
9978 | Layout* layout, | |
9979 | Sized_relobj_file<size, big_endian>* object, | |
9980 | unsigned int data_shndx, | |
9981 | unsigned int sh_type, | |
9982 | const unsigned char* prelocs, | |
9983 | size_t reloc_count, | |
9984 | Output_section* output_section, | |
9985 | bool needs_special_offset_handling, | |
9986 | size_t local_symbol_count, | |
9987 | const unsigned char* plocal_syms, | |
9988 | Relocatable_relocs* rr) | |
9989 | { | |
9990 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
9991 | Classify_reloc; | |
9992 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
9993 | Emit_relocs_strategy; | |
9994 | ||
9995 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9996 | ||
9997 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
9998 | symtab, | |
9999 | layout, | |
10000 | object, | |
10001 | data_shndx, | |
10002 | prelocs, | |
10003 | reloc_count, | |
10004 | output_section, | |
10005 | needs_special_offset_handling, | |
10006 | local_symbol_count, | |
10007 | plocal_syms, | |
10008 | rr); | |
10009 | } | |
10010 | ||
7404fe1b | 10011 | // Emit relocations for a section. |
dd93cd0a AM |
10012 | // This is a modified version of the function by the same name in |
10013 | // target-reloc.h. Using relocate_special_relocatable for | |
10014 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
10015 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
10016 | |
10017 | template<int size, bool big_endian> | |
10018 | void | |
7404fe1b | 10019 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
10020 | const Relocate_info<size, big_endian>* relinfo, |
10021 | unsigned int sh_type, | |
10022 | const unsigned char* prelocs, | |
10023 | size_t reloc_count, | |
10024 | Output_section* output_section, | |
62fe925a | 10025 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 10026 | unsigned char*, |
dd93cd0a | 10027 | Address view_address, |
cf43a2fe | 10028 | section_size_type, |
42cacb20 DE |
10029 | unsigned char* reloc_view, |
10030 | section_size_type reloc_view_size) | |
10031 | { | |
10032 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
10033 | ||
0e123f69 AM |
10034 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
10035 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
10036 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
10037 | // Offset from start of insn to d-field reloc. |
10038 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
10039 | |
10040 | Powerpc_relobj<size, big_endian>* const object | |
10041 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
10042 | const unsigned int local_count = object->local_symbol_count(); | |
10043 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 10044 | Address got2_addend = 0; |
cf43a2fe | 10045 | if (got2_shndx != 0) |
c9269dff AM |
10046 | { |
10047 | got2_addend = object->get_output_section_offset(got2_shndx); | |
10048 | gold_assert(got2_addend != invalid_address); | |
10049 | } | |
cf43a2fe | 10050 | |
033bfb73 CC |
10051 | const bool relocatable = parameters->options().relocatable(); |
10052 | ||
cf43a2fe | 10053 | unsigned char* pwrite = reloc_view; |
7404fe1b | 10054 | bool zap_next = false; |
cf43a2fe AM |
10055 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
10056 | { | |
91a65d2f | 10057 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
10058 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
10059 | continue; | |
10060 | ||
10061 | Reltype reloc(prelocs); | |
10062 | Reltype_write reloc_write(pwrite); | |
10063 | ||
7404fe1b | 10064 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 10065 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
10066 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
10067 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
10068 | const unsigned int orig_r_sym = r_sym; | |
10069 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
10070 | = reloc.get_r_addend(); | |
10071 | const Symbol* gsym = NULL; | |
10072 | ||
10073 | if (zap_next) | |
10074 | { | |
10075 | // We could arrange to discard these and other relocs for | |
10076 | // tls optimised sequences in the strategy methods, but for | |
10077 | // now do as BFD ld does. | |
10078 | r_type = elfcpp::R_POWERPC_NONE; | |
10079 | zap_next = false; | |
10080 | } | |
cf43a2fe AM |
10081 | |
10082 | // Get the new symbol index. | |
9215b98b | 10083 | Output_section* os = NULL; |
cf43a2fe AM |
10084 | if (r_sym < local_count) |
10085 | { | |
10086 | switch (strategy) | |
10087 | { | |
10088 | case Relocatable_relocs::RELOC_COPY: | |
10089 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 10090 | if (r_sym != 0) |
dd93cd0a | 10091 | { |
7404fe1b AM |
10092 | r_sym = object->symtab_index(r_sym); |
10093 | gold_assert(r_sym != -1U); | |
dd93cd0a | 10094 | } |
cf43a2fe AM |
10095 | break; |
10096 | ||
10097 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
10098 | { | |
10099 | // We are adjusting a section symbol. We need to find | |
10100 | // the symbol table index of the section symbol for | |
10101 | // the output section corresponding to input section | |
10102 | // in which this symbol is defined. | |
10103 | gold_assert(r_sym < local_count); | |
10104 | bool is_ordinary; | |
10105 | unsigned int shndx = | |
10106 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
10107 | gold_assert(is_ordinary); | |
9215b98b | 10108 | os = object->output_section(shndx); |
cf43a2fe AM |
10109 | gold_assert(os != NULL); |
10110 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 10111 | r_sym = os->symtab_index(); |
cf43a2fe AM |
10112 | } |
10113 | break; | |
10114 | ||
10115 | default: | |
10116 | gold_unreachable(); | |
10117 | } | |
10118 | } | |
10119 | else | |
10120 | { | |
7404fe1b | 10121 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
10122 | gold_assert(gsym != NULL); |
10123 | if (gsym->is_forwarder()) | |
10124 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
10125 | ||
10126 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 10127 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
10128 | } |
10129 | ||
10130 | // Get the new offset--the location in the output section where | |
10131 | // this relocation should be applied. | |
cf43a2fe | 10132 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 10133 | offset += offset_in_output_section; |
cf43a2fe AM |
10134 | else |
10135 | { | |
c9269dff AM |
10136 | section_offset_type sot_offset = |
10137 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 10138 | section_offset_type new_sot_offset = |
c9269dff AM |
10139 | output_section->output_offset(object, relinfo->data_shndx, |
10140 | sot_offset); | |
cf43a2fe | 10141 | gold_assert(new_sot_offset != -1); |
7404fe1b | 10142 | offset = new_sot_offset; |
cf43a2fe AM |
10143 | } |
10144 | ||
dd93cd0a AM |
10145 | // In an object file, r_offset is an offset within the section. |
10146 | // In an executable or dynamic object, generated by | |
10147 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 10148 | if (!relocatable) |
dd93cd0a | 10149 | { |
7404fe1b | 10150 | offset += view_address; |
dd93cd0a | 10151 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 10152 | offset -= offset_in_output_section; |
dd93cd0a AM |
10153 | } |
10154 | ||
cf43a2fe | 10155 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
10156 | if (strategy == Relocatable_relocs::RELOC_COPY) |
10157 | ; | |
10158 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
10159 | { | |
7404fe1b | 10160 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
033bfb73 CC |
10161 | addend = psymval->value(object, addend); |
10162 | // In a relocatable link, the symbol value is relative to | |
10163 | // the start of the output section. For a non-relocatable | |
10164 | // link, we need to adjust the addend. | |
10165 | if (!relocatable) | |
10166 | { | |
10167 | gold_assert(os != NULL); | |
10168 | addend -= os->address(); | |
10169 | } | |
cf43a2fe AM |
10170 | } |
10171 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
10172 | { | |
e3a7574e AM |
10173 | if (size == 32) |
10174 | { | |
10175 | if (addend >= 32768) | |
10176 | addend += got2_addend; | |
10177 | } | |
10178 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
10179 | { | |
10180 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 10181 | addend -= d_offset; |
e3a7574e AM |
10182 | } |
10183 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
10184 | { | |
10185 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 10186 | addend -= d_offset + 4; |
e3a7574e | 10187 | } |
cf43a2fe AM |
10188 | } |
10189 | else | |
10190 | gold_unreachable(); | |
10191 | ||
033bfb73 | 10192 | if (!relocatable) |
7404fe1b AM |
10193 | { |
10194 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10195 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
10196 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
10197 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
10198 | { | |
10199 | // First instruction of a global dynamic sequence, | |
10200 | // arg setup insn. | |
10201 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10202 | switch (this->optimize_tls_gd(final)) | |
10203 | { | |
10204 | case tls::TLSOPT_TO_IE: | |
10205 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
10206 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
10207 | break; | |
10208 | case tls::TLSOPT_TO_LE: | |
10209 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10210 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10211 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10212 | else | |
10213 | { | |
10214 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 10215 | offset -= d_offset; |
7404fe1b AM |
10216 | } |
10217 | break; | |
10218 | default: | |
10219 | break; | |
10220 | } | |
10221 | } | |
10222 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10223 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
10224 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
10225 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
10226 | { | |
10227 | // First instruction of a local dynamic sequence, | |
10228 | // arg setup insn. | |
10229 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
10230 | { | |
10231 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10232 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
10233 | { | |
10234 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10235 | const Output_section* os = relinfo->layout->tls_segment() | |
10236 | ->first_section(); | |
10237 | gold_assert(os != NULL); | |
10238 | gold_assert(os->needs_symtab_index()); | |
10239 | r_sym = os->symtab_index(); | |
10240 | addend = dtp_offset; | |
10241 | } | |
10242 | else | |
10243 | { | |
10244 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 10245 | offset -= d_offset; |
7404fe1b AM |
10246 | } |
10247 | } | |
10248 | } | |
10249 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10250 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
10251 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
10252 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
10253 | { | |
10254 | // First instruction of initial exec sequence. | |
10255 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10256 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
10257 | { | |
10258 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10259 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
10260 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10261 | else | |
10262 | { | |
10263 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 10264 | offset -= d_offset; |
7404fe1b AM |
10265 | } |
10266 | } | |
10267 | } | |
10268 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
10269 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
10270 | { | |
10271 | // Second instruction of a global dynamic sequence, | |
10272 | // the __tls_get_addr call | |
10273 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10274 | switch (this->optimize_tls_gd(final)) | |
10275 | { | |
10276 | case tls::TLSOPT_TO_IE: | |
10277 | r_type = elfcpp::R_POWERPC_NONE; | |
10278 | zap_next = true; | |
10279 | break; | |
10280 | case tls::TLSOPT_TO_LE: | |
10281 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10282 | offset += d_offset; |
7404fe1b AM |
10283 | zap_next = true; |
10284 | break; | |
10285 | default: | |
10286 | break; | |
10287 | } | |
10288 | } | |
10289 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
10290 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
10291 | { | |
10292 | // Second instruction of a local dynamic sequence, | |
10293 | // the __tls_get_addr call | |
10294 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
10295 | { | |
10296 | const Output_section* os = relinfo->layout->tls_segment() | |
10297 | ->first_section(); | |
10298 | gold_assert(os != NULL); | |
10299 | gold_assert(os->needs_symtab_index()); | |
10300 | r_sym = os->symtab_index(); | |
10301 | addend = dtp_offset; | |
10302 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10303 | offset += d_offset; |
7404fe1b AM |
10304 | zap_next = true; |
10305 | } | |
10306 | } | |
10307 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
10308 | { | |
10309 | // Second instruction of an initial exec sequence | |
10310 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10311 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
10312 | { | |
10313 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10314 | offset += d_offset; |
7404fe1b AM |
10315 | } |
10316 | } | |
10317 | } | |
10318 | ||
10319 | reloc_write.put_r_offset(offset); | |
10320 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
10321 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
10322 | |
10323 | pwrite += reloc_size; | |
10324 | } | |
10325 | ||
10326 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
10327 | == reloc_view_size); | |
42cacb20 DE |
10328 | } |
10329 | ||
ec661b9d | 10330 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
10331 | // treatment. This is how we support equality comparisons of function |
10332 | // pointers across shared library boundaries, as described in the | |
10333 | // processor specific ABI supplement. | |
10334 | ||
10335 | template<int size, bool big_endian> | |
10336 | uint64_t | |
10337 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
10338 | { | |
cf43a2fe AM |
10339 | if (size == 32) |
10340 | { | |
10341 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
10342 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10343 | p != this->stub_tables_.end(); | |
10344 | ++p) | |
10345 | { | |
7e57d19e AM |
10346 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10347 | = (*p)->find_plt_call_entry(gsym); | |
10348 | if (ent != NULL) | |
10349 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10350 | } |
c9824451 | 10351 | } |
9055360d AM |
10352 | else if (this->abiversion() >= 2) |
10353 | { | |
faa2211d AM |
10354 | Address off = this->glink_section()->find_global_entry(gsym); |
10355 | if (off != invalid_address) | |
9055360d AM |
10356 | return this->glink_section()->global_entry_address() + off; |
10357 | } | |
ec661b9d | 10358 | gold_unreachable(); |
c9824451 AM |
10359 | } |
10360 | ||
10361 | // Return the PLT address to use for a local symbol. | |
10362 | template<int size, bool big_endian> | |
10363 | uint64_t | |
10364 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
10365 | const Relobj* object, | |
10366 | unsigned int symndx) const | |
10367 | { | |
10368 | if (size == 32) | |
10369 | { | |
10370 | const Sized_relobj<size, big_endian>* relobj | |
10371 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
10372 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10373 | p != this->stub_tables_.end(); | |
10374 | ++p) | |
10375 | { | |
7e57d19e AM |
10376 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10377 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
10378 | if (ent != NULL) | |
10379 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10380 | } |
c9824451 | 10381 | } |
ec661b9d | 10382 | gold_unreachable(); |
c9824451 AM |
10383 | } |
10384 | ||
10385 | // Return the PLT address to use for a global symbol. | |
10386 | template<int size, bool big_endian> | |
10387 | uint64_t | |
10388 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
10389 | const Symbol* gsym) const | |
10390 | { | |
10391 | if (size == 32) | |
10392 | { | |
ec661b9d AM |
10393 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10394 | p != this->stub_tables_.end(); | |
10395 | ++p) | |
10396 | { | |
7e57d19e AM |
10397 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10398 | = (*p)->find_plt_call_entry(gsym); | |
10399 | if (ent != NULL) | |
10400 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10401 | } |
cf43a2fe | 10402 | } |
9055360d AM |
10403 | else if (this->abiversion() >= 2) |
10404 | { | |
faa2211d AM |
10405 | Address off = this->glink_section()->find_global_entry(gsym); |
10406 | if (off != invalid_address) | |
9055360d AM |
10407 | return this->glink_section()->global_entry_address() + off; |
10408 | } | |
ec661b9d | 10409 | gold_unreachable(); |
42cacb20 DE |
10410 | } |
10411 | ||
bd73a62d AM |
10412 | // Return the offset to use for the GOT_INDX'th got entry which is |
10413 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
10414 | template<int size, bool big_endian> | |
10415 | int64_t | |
10416 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
10417 | const Relobj* object, | |
10418 | unsigned int symndx, | |
10419 | unsigned int got_indx) const | |
10420 | { | |
10421 | const Powerpc_relobj<size, big_endian>* ppc_object | |
10422 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
10423 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
10424 | { | |
10425 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
10426 | got_type <= GOT_TYPE_TPREL; | |
10427 | got_type = Got_type(got_type + 1)) | |
10428 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
10429 | { | |
10430 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
10431 | if (got_type == GOT_TYPE_TLSGD) | |
10432 | off += size / 8; | |
10433 | if (off == got_indx * (size / 8)) | |
10434 | { | |
10435 | if (got_type == GOT_TYPE_TPREL) | |
10436 | return -tp_offset; | |
10437 | else | |
10438 | return -dtp_offset; | |
10439 | } | |
10440 | } | |
10441 | } | |
10442 | gold_unreachable(); | |
10443 | } | |
10444 | ||
10445 | // Return the offset to use for the GOT_INDX'th got entry which is | |
10446 | // for global tls symbol GSYM. | |
10447 | template<int size, bool big_endian> | |
10448 | int64_t | |
10449 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
10450 | Symbol* gsym, | |
10451 | unsigned int got_indx) const | |
10452 | { | |
10453 | if (gsym->type() == elfcpp::STT_TLS) | |
10454 | { | |
10455 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
10456 | got_type <= GOT_TYPE_TPREL; | |
10457 | got_type = Got_type(got_type + 1)) | |
10458 | if (gsym->has_got_offset(got_type)) | |
10459 | { | |
10460 | unsigned int off = gsym->got_offset(got_type); | |
10461 | if (got_type == GOT_TYPE_TLSGD) | |
10462 | off += size / 8; | |
10463 | if (off == got_indx * (size / 8)) | |
10464 | { | |
10465 | if (got_type == GOT_TYPE_TPREL) | |
10466 | return -tp_offset; | |
10467 | else | |
10468 | return -dtp_offset; | |
10469 | } | |
10470 | } | |
10471 | } | |
10472 | gold_unreachable(); | |
10473 | } | |
10474 | ||
42cacb20 DE |
10475 | // The selector for powerpc object files. |
10476 | ||
10477 | template<int size, bool big_endian> | |
10478 | class Target_selector_powerpc : public Target_selector | |
10479 | { | |
10480 | public: | |
10481 | Target_selector_powerpc() | |
edc27beb AM |
10482 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
10483 | size, big_endian, | |
03ef7571 ILT |
10484 | (size == 64 |
10485 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
10486 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
10487 | (size == 64 | |
10488 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
10489 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
10490 | { } |
10491 | ||
2e702c99 RM |
10492 | virtual Target* |
10493 | do_instantiate_target() | |
7f055c20 | 10494 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
10495 | }; |
10496 | ||
10497 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
10498 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
10499 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
10500 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
10501 | ||
decdd3bc AM |
10502 | // Instantiate these constants for -O0 |
10503 | template<int size, bool big_endian> | |
9055360d AM |
10504 | const typename Output_data_glink<size, big_endian>::Address |
10505 | Output_data_glink<size, big_endian>::invalid_address; | |
10506 | template<int size, bool big_endian> | |
decdd3bc AM |
10507 | const typename Stub_table<size, big_endian>::Address |
10508 | Stub_table<size, big_endian>::invalid_address; | |
10509 | template<int size, bool big_endian> | |
10510 | const typename Target_powerpc<size, big_endian>::Address | |
10511 | Target_powerpc<size, big_endian>::invalid_address; | |
10512 | ||
42cacb20 | 10513 | } // End anonymous namespace. |