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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
2571583a | 3 | // Copyright (C) 2008-2017 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 | ||
4d9aa155 AM |
81 | inline bool |
82 | is_branch_reloc(unsigned int r_type); | |
83 | ||
590b87ff AM |
84 | // Counter incremented on every Powerpc_relobj constructed. |
85 | static uint32_t object_id = 0; | |
86 | ||
cf43a2fe AM |
87 | template<int size, bool big_endian> |
88 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
89 | { | |
90 | public: | |
dd93cd0a | 91 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
92 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
93 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 94 | |
cf43a2fe AM |
95 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
96 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
97 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff AM |
98 | uniq_(object_id++), special_(0), relatoc_(0), toc_(0), |
99 | has_small_toc_reloc_(false), opd_valid_(false), | |
100 | e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), | |
101 | access_from_map_(), has14_(), stub_table_index_(), st_other_() | |
b4f7960d AM |
102 | { |
103 | this->set_abiversion(0); | |
104 | } | |
cf43a2fe AM |
105 | |
106 | ~Powerpc_relobj() | |
107 | { } | |
108 | ||
b4f7960d AM |
109 | // Read the symbols then set up st_other vector. |
110 | void | |
111 | do_read_symbols(Read_symbols_data*); | |
112 | ||
5edad15d AM |
113 | // Arrange to always relocate .toc first. |
114 | virtual void | |
115 | do_relocate_sections( | |
116 | const Symbol_table* symtab, const Layout* layout, | |
117 | const unsigned char* pshdrs, Output_file* of, | |
118 | typename Sized_relobj_file<size, big_endian>::Views* pviews); | |
119 | ||
120 | // The .toc section index. | |
121 | unsigned int | |
122 | toc_shndx() const | |
123 | { | |
124 | return this->toc_; | |
125 | } | |
126 | ||
127 | // Mark .toc entry at OFF as not optimizable. | |
128 | void | |
129 | set_no_toc_opt(Address off) | |
130 | { | |
131 | if (this->no_toc_opt_.empty()) | |
132 | this->no_toc_opt_.resize(this->section_size(this->toc_shndx()) | |
133 | / (size / 8)); | |
134 | off /= size / 8; | |
135 | if (off < this->no_toc_opt_.size()) | |
136 | this->no_toc_opt_[off] = true; | |
137 | } | |
138 | ||
139 | // Mark the entire .toc as not optimizable. | |
140 | void | |
141 | set_no_toc_opt() | |
142 | { | |
143 | this->no_toc_opt_.resize(1); | |
144 | this->no_toc_opt_[0] = true; | |
145 | } | |
146 | ||
147 | // Return true if code using the .toc entry at OFF should not be edited. | |
148 | bool | |
149 | no_toc_opt(Address off) const | |
150 | { | |
151 | if (this->no_toc_opt_.empty()) | |
152 | return false; | |
153 | off /= size / 8; | |
154 | if (off >= this->no_toc_opt_.size()) | |
155 | return true; | |
156 | return this->no_toc_opt_[off]; | |
157 | } | |
158 | ||
c9269dff | 159 | // The .got2 section shndx. |
cf43a2fe AM |
160 | unsigned int |
161 | got2_shndx() const | |
162 | { | |
163 | if (size == 32) | |
c9269dff | 164 | return this->special_; |
cf43a2fe AM |
165 | else |
166 | return 0; | |
167 | } | |
168 | ||
c9269dff AM |
169 | // The .opd section shndx. |
170 | unsigned int | |
171 | opd_shndx() const | |
172 | { | |
173 | if (size == 32) | |
174 | return 0; | |
175 | else | |
176 | return this->special_; | |
177 | } | |
178 | ||
179 | // Init OPD entry arrays. | |
180 | void | |
181 | init_opd(size_t opd_size) | |
182 | { | |
183 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 184 | this->opd_ent_.resize(count); |
c9269dff AM |
185 | } |
186 | ||
187 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
188 | unsigned int |
189 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
190 | { |
191 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
192 | gold_assert(ndx < this->opd_ent_.size()); |
193 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 194 | if (value != NULL) |
bfdfa4cd AM |
195 | *value = this->opd_ent_[ndx].off; |
196 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
197 | } |
198 | ||
199 | // Set section and offset of function entry for .opd + R_OFF. | |
200 | void | |
dd93cd0a | 201 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
202 | { |
203 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
204 | gold_assert(ndx < this->opd_ent_.size()); |
205 | this->opd_ent_[ndx].shndx = shndx; | |
206 | this->opd_ent_[ndx].off = value; | |
207 | } | |
208 | ||
209 | // Return discard flag for .opd + R_OFF. | |
210 | bool | |
211 | get_opd_discard(Address r_off) const | |
212 | { | |
213 | size_t ndx = this->opd_ent_ndx(r_off); | |
214 | gold_assert(ndx < this->opd_ent_.size()); | |
215 | return this->opd_ent_[ndx].discard; | |
216 | } | |
217 | ||
218 | // Set discard flag for .opd + R_OFF. | |
219 | void | |
220 | set_opd_discard(Address r_off) | |
221 | { | |
222 | size_t ndx = this->opd_ent_ndx(r_off); | |
223 | gold_assert(ndx < this->opd_ent_.size()); | |
224 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
225 | } |
226 | ||
e81fea4d AM |
227 | bool |
228 | opd_valid() const | |
229 | { return this->opd_valid_; } | |
230 | ||
231 | void | |
232 | set_opd_valid() | |
233 | { this->opd_valid_ = true; } | |
234 | ||
c9269dff AM |
235 | // Examine .rela.opd to build info about function entry points. |
236 | void | |
237 | scan_opd_relocs(size_t reloc_count, | |
238 | const unsigned char* prelocs, | |
239 | const unsigned char* plocal_syms); | |
240 | ||
5edad15d AM |
241 | // Returns true if a code sequence loading a TOC entry can be |
242 | // converted into code calculating a TOC pointer relative offset. | |
243 | bool | |
244 | make_toc_relative(Target_powerpc<size, big_endian>* target, | |
245 | Address* value); | |
246 | ||
26a4e9cb AM |
247 | // Perform the Sized_relobj_file method, then set up opd info from |
248 | // .opd relocs. | |
c9269dff AM |
249 | void |
250 | do_read_relocs(Read_relocs_data*); | |
251 | ||
cf43a2fe AM |
252 | bool |
253 | do_find_special_sections(Read_symbols_data* sd); | |
254 | ||
ec4dbad3 AM |
255 | // Adjust this local symbol value. Return false if the symbol |
256 | // should be discarded from the output file. | |
257 | bool | |
258 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
259 | { | |
260 | if (size == 64 && this->opd_shndx() != 0) | |
261 | { | |
262 | bool is_ordinary; | |
263 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
264 | return true; | |
265 | if (this->get_opd_discard(lv->input_value())) | |
266 | return false; | |
267 | } | |
268 | return true; | |
269 | } | |
270 | ||
6c77229c AM |
271 | Access_from* |
272 | access_from_map() | |
273 | { return &this->access_from_map_; } | |
274 | ||
275 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
276 | // section at DST_OFF. | |
277 | void | |
efc6fa12 | 278 | add_reference(Relobj* src_obj, |
6c77229c AM |
279 | unsigned int src_indx, |
280 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
281 | { | |
282 | Section_id src_id(src_obj, src_indx); | |
283 | this->access_from_map_[dst_off].insert(src_id); | |
284 | } | |
285 | ||
286 | // Add a reference to the code section specified by the .opd entry | |
287 | // at DST_OFF | |
288 | void | |
289 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
290 | { | |
291 | size_t ndx = this->opd_ent_ndx(dst_off); | |
292 | if (ndx >= this->opd_ent_.size()) | |
293 | this->opd_ent_.resize(ndx + 1); | |
294 | this->opd_ent_[ndx].gc_mark = true; | |
295 | } | |
296 | ||
297 | void | |
298 | process_gc_mark(Symbol_table* symtab) | |
299 | { | |
300 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
301 | if (this->opd_ent_[i].gc_mark) | |
302 | { | |
303 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 304 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
305 | } |
306 | } | |
307 | ||
dd93cd0a AM |
308 | // Return offset in output GOT section that this object will use |
309 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
310 | Address | |
311 | toc_base_offset() const | |
312 | { return 0x8000; } | |
313 | ||
d8f5a274 AM |
314 | void |
315 | set_has_small_toc_reloc() | |
316 | { has_small_toc_reloc_ = true; } | |
317 | ||
318 | bool | |
319 | has_small_toc_reloc() const | |
320 | { return has_small_toc_reloc_; } | |
321 | ||
ec661b9d AM |
322 | void |
323 | set_has_14bit_branch(unsigned int shndx) | |
324 | { | |
325 | if (shndx >= this->has14_.size()) | |
326 | this->has14_.resize(shndx + 1); | |
327 | this->has14_[shndx] = true; | |
328 | } | |
329 | ||
330 | bool | |
331 | has_14bit_branch(unsigned int shndx) const | |
332 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
333 | ||
334 | void | |
a3e60ddb | 335 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 336 | { |
a3e60ddb | 337 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 338 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 339 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
340 | } |
341 | ||
342 | Stub_table<size, big_endian>* | |
343 | stub_table(unsigned int shndx) | |
344 | { | |
a3e60ddb AM |
345 | if (shndx < this->stub_table_index_.size()) |
346 | { | |
347 | Target_powerpc<size, big_endian>* target | |
348 | = static_cast<Target_powerpc<size, big_endian>*>( | |
349 | parameters->sized_target<size, big_endian>()); | |
350 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
351 | if (indx < target->stub_tables().size()) |
352 | return target->stub_tables()[indx]; | |
a3e60ddb | 353 | } |
ec661b9d AM |
354 | return NULL; |
355 | } | |
356 | ||
a3e60ddb AM |
357 | void |
358 | clear_stub_table() | |
359 | { | |
360 | this->stub_table_index_.clear(); | |
361 | } | |
362 | ||
590b87ff AM |
363 | uint32_t |
364 | uniq() const | |
365 | { return this->uniq_; } | |
366 | ||
b4f7960d AM |
367 | int |
368 | abiversion() const | |
369 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
370 | ||
371 | // Set ABI version for input and output | |
372 | void | |
373 | set_abiversion(int ver); | |
374 | ||
7ee7ff70 AM |
375 | unsigned int |
376 | st_other (unsigned int symndx) const | |
377 | { | |
378 | return this->st_other_[symndx]; | |
379 | } | |
380 | ||
b4f7960d AM |
381 | unsigned int |
382 | ppc64_local_entry_offset(const Symbol* sym) const | |
383 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
384 | ||
385 | unsigned int | |
386 | ppc64_local_entry_offset(unsigned int symndx) const | |
387 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
388 | ||
cf43a2fe | 389 | private: |
bfdfa4cd AM |
390 | struct Opd_ent |
391 | { | |
392 | unsigned int shndx; | |
c6de8ed4 AM |
393 | bool discard : 1; |
394 | bool gc_mark : 1; | |
26a4e9cb | 395 | Address off; |
bfdfa4cd AM |
396 | }; |
397 | ||
398 | // Return index into opd_ent_ array for .opd entry at OFF. | |
399 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
400 | // apart when the language doesn't use the last 8-byte word, the | |
401 | // environment pointer. Thus dividing the entry section offset by | |
402 | // 16 will give an index into opd_ent_ that works for either layout | |
403 | // of .opd. (It leaves some elements of the vector unused when .opd | |
404 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
405 | // until relocations are processed, and in any case it is possible | |
406 | // for an object to have some entries spaced 16 bytes apart and | |
407 | // others 24 bytes apart.) | |
c9269dff AM |
408 | size_t |
409 | opd_ent_ndx(size_t off) const | |
410 | { return off >> 4;} | |
411 | ||
590b87ff AM |
412 | // Per object unique identifier |
413 | uint32_t uniq_; | |
414 | ||
c9269dff AM |
415 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. |
416 | unsigned int special_; | |
bfdfa4cd | 417 | |
5edad15d AM |
418 | // For 64-bit the .rela.toc and .toc section shdnx. |
419 | unsigned int relatoc_; | |
420 | unsigned int toc_; | |
421 | ||
d8f5a274 AM |
422 | // For 64-bit, whether this object uses small model relocs to access |
423 | // the toc. | |
424 | bool has_small_toc_reloc_; | |
425 | ||
bfdfa4cd AM |
426 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
427 | // vector is valid. The flag could be made atomic and set in | |
428 | // do_read_relocs with memory_order_release and then tested with | |
429 | // memory_order_acquire, potentially resulting in fewer entries in | |
430 | // access_from_map_. | |
431 | bool opd_valid_; | |
432 | ||
590b87ff AM |
433 | // Header e_flags |
434 | elfcpp::Elf_Word e_flags_; | |
435 | ||
436 | // For 64-bit, an array with one entry per 64-bit word in the .toc | |
437 | // section, set if accesses using that word cannot be optimised. | |
438 | std::vector<bool> no_toc_opt_; | |
439 | ||
c9269dff AM |
440 | // The first 8-byte word of an OPD entry gives the address of the |
441 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 442 | // relocation on this word. The following vector records the |
c9269dff | 443 | // section and offset specified by these relocations. |
bfdfa4cd AM |
444 | std::vector<Opd_ent> opd_ent_; |
445 | ||
e81fea4d | 446 | // References made to this object's .opd section when running |
bfdfa4cd AM |
447 | // gc_process_relocs for another object, before the opd_ent_ vector |
448 | // is valid for this object. | |
e81fea4d | 449 | Access_from access_from_map_; |
ec661b9d AM |
450 | |
451 | // Whether input section has a 14-bit branch reloc. | |
452 | std::vector<bool> has14_; | |
453 | ||
454 | // The stub table to use for a given input section. | |
a3e60ddb | 455 | std::vector<unsigned int> stub_table_index_; |
b4f7960d | 456 | |
b4f7960d AM |
457 | // ELF st_other field for local symbols. |
458 | std::vector<unsigned char> st_other_; | |
cf43a2fe AM |
459 | }; |
460 | ||
dc3714f3 AM |
461 | template<int size, bool big_endian> |
462 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
463 | { | |
464 | public: | |
465 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
466 | ||
467 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
468 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
469 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff | 470 | opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_() |
b4f7960d AM |
471 | { |
472 | this->set_abiversion(0); | |
473 | } | |
dc3714f3 AM |
474 | |
475 | ~Powerpc_dynobj() | |
476 | { } | |
477 | ||
478 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
479 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
480 | void | |
481 | do_read_symbols(Read_symbols_data*); | |
482 | ||
483 | // The .opd section shndx. | |
484 | unsigned int | |
485 | opd_shndx() const | |
486 | { | |
487 | return this->opd_shndx_; | |
488 | } | |
489 | ||
490 | // The .opd section address. | |
491 | Address | |
492 | opd_address() const | |
493 | { | |
494 | return this->opd_address_; | |
495 | } | |
496 | ||
497 | // Init OPD entry arrays. | |
498 | void | |
499 | init_opd(size_t opd_size) | |
500 | { | |
501 | size_t count = this->opd_ent_ndx(opd_size); | |
502 | this->opd_ent_.resize(count); | |
503 | } | |
504 | ||
505 | // Return section and offset of function entry for .opd + R_OFF. | |
506 | unsigned int | |
507 | get_opd_ent(Address r_off, Address* value = NULL) const | |
508 | { | |
509 | size_t ndx = this->opd_ent_ndx(r_off); | |
510 | gold_assert(ndx < this->opd_ent_.size()); | |
511 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
512 | if (value != NULL) | |
513 | *value = this->opd_ent_[ndx].off; | |
514 | return this->opd_ent_[ndx].shndx; | |
515 | } | |
516 | ||
517 | // Set section and offset of function entry for .opd + R_OFF. | |
518 | void | |
519 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
520 | { | |
521 | size_t ndx = this->opd_ent_ndx(r_off); | |
522 | gold_assert(ndx < this->opd_ent_.size()); | |
523 | this->opd_ent_[ndx].shndx = shndx; | |
524 | this->opd_ent_[ndx].off = value; | |
525 | } | |
526 | ||
b4f7960d AM |
527 | int |
528 | abiversion() const | |
529 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
530 | ||
531 | // Set ABI version for input and output. | |
532 | void | |
533 | set_abiversion(int ver); | |
534 | ||
dc3714f3 AM |
535 | private: |
536 | // Used to specify extent of executable sections. | |
537 | struct Sec_info | |
538 | { | |
539 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
540 | : start(start_), len(len_), shndx(shndx_) | |
541 | { } | |
542 | ||
543 | bool | |
544 | operator<(const Sec_info& that) const | |
545 | { return this->start < that.start; } | |
546 | ||
547 | Address start; | |
548 | Address len; | |
549 | unsigned int shndx; | |
550 | }; | |
551 | ||
552 | struct Opd_ent | |
553 | { | |
554 | unsigned int shndx; | |
555 | Address off; | |
556 | }; | |
557 | ||
558 | // Return index into opd_ent_ array for .opd entry at OFF. | |
559 | size_t | |
560 | opd_ent_ndx(size_t off) const | |
561 | { return off >> 4;} | |
562 | ||
563 | // For 64-bit the .opd section shndx and address. | |
564 | unsigned int opd_shndx_; | |
565 | Address opd_address_; | |
566 | ||
590b87ff AM |
567 | // Header e_flags |
568 | elfcpp::Elf_Word e_flags_; | |
569 | ||
dc3714f3 AM |
570 | // The first 8-byte word of an OPD entry gives the address of the |
571 | // entry point of the function. Records the section and offset | |
572 | // corresponding to the address. Note that in dynamic objects, | |
573 | // offset is *not* relative to the section. | |
574 | std::vector<Opd_ent> opd_ent_; | |
575 | }; | |
576 | ||
5edad15d AM |
577 | // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the |
578 | // base class will emit. | |
579 | ||
580 | template<int sh_type, int size, bool big_endian> | |
581 | class Powerpc_copy_relocs : public Copy_relocs<sh_type, size, big_endian> | |
582 | { | |
583 | public: | |
584 | Powerpc_copy_relocs() | |
585 | : Copy_relocs<sh_type, size, big_endian>(elfcpp::R_POWERPC_COPY) | |
586 | { } | |
587 | ||
588 | // Emit any saved relocations which turn out to be needed. This is | |
589 | // called after all the relocs have been scanned. | |
590 | void | |
591 | emit(Output_data_reloc<sh_type, true, size, big_endian>*); | |
592 | }; | |
593 | ||
42cacb20 DE |
594 | template<int size, bool big_endian> |
595 | class Target_powerpc : public Sized_target<size, big_endian> | |
596 | { | |
597 | public: | |
d83ce4e3 AM |
598 | typedef |
599 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 600 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 601 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
7e57d19e | 602 | typedef Unordered_set<Symbol_location, Symbol_location_hash> Tocsave_loc; |
c9269dff | 603 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
604 | // Offset of tp and dtp pointers from start of TLS block. |
605 | static const Address tp_offset = 0x7000; | |
606 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
607 | |
608 | Target_powerpc() | |
609 | : Sized_target<size, big_endian>(&powerpc_info), | |
ec661b9d | 610 | got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL), |
5edad15d | 611 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(), |
43819297 | 612 | tlsld_got_offset_(-1U), |
7e57d19e | 613 | stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), |
7ee7ff70 AM |
614 | plt_thread_safe_(false), plt_localentry0_(false), |
615 | plt_localentry0_init_(false), has_localentry0_(false), | |
616 | relax_failed_(false), relax_fail_count_(0), | |
d49044c7 | 617 | stub_group_size_(0), savres_section_(0) |
42cacb20 DE |
618 | { |
619 | } | |
620 | ||
2e702c99 | 621 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
622 | // garbage collection. |
623 | void | |
ad0f2072 | 624 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
625 | Layout* layout, |
626 | Sized_relobj_file<size, big_endian>* object, | |
627 | unsigned int data_shndx, | |
628 | unsigned int sh_type, | |
629 | const unsigned char* prelocs, | |
630 | size_t reloc_count, | |
631 | Output_section* output_section, | |
632 | bool needs_special_offset_handling, | |
633 | size_t local_symbol_count, | |
634 | const unsigned char* plocal_symbols); | |
6d03d481 | 635 | |
42cacb20 DE |
636 | // Scan the relocations to look for symbol adjustments. |
637 | void | |
ad0f2072 | 638 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 639 | Layout* layout, |
6fa2a40b | 640 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
641 | unsigned int data_shndx, |
642 | unsigned int sh_type, | |
643 | const unsigned char* prelocs, | |
644 | size_t reloc_count, | |
645 | Output_section* output_section, | |
646 | bool needs_special_offset_handling, | |
647 | size_t local_symbol_count, | |
648 | const unsigned char* plocal_symbols); | |
921b5322 AM |
649 | |
650 | // Map input .toc section to output .got section. | |
651 | const char* | |
652 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
653 | { | |
654 | if (size == 64 && strcmp(name, ".toc") == 0) | |
655 | { | |
656 | *plen = 4; | |
657 | return ".got"; | |
658 | } | |
659 | return NULL; | |
660 | } | |
661 | ||
f3a0ed29 AM |
662 | // Provide linker defined save/restore functions. |
663 | void | |
664 | define_save_restore_funcs(Layout*, Symbol_table*); | |
665 | ||
ec661b9d AM |
666 | // No stubs unless a final link. |
667 | bool | |
668 | do_may_relax() const | |
669 | { return !parameters->options().relocatable(); } | |
670 | ||
671 | bool | |
672 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
673 | ||
9d5781f8 AM |
674 | void |
675 | do_plt_fde_location(const Output_data*, unsigned char*, | |
676 | uint64_t*, off_t*) const; | |
677 | ||
ec661b9d AM |
678 | // Stash info about branches, for stub generation. |
679 | void | |
680 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
681 | unsigned int data_shndx, Address r_offset, | |
682 | unsigned int r_type, unsigned int r_sym, Address addend) | |
683 | { | |
684 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
685 | this->branch_info_.push_back(info); | |
686 | if (r_type == elfcpp::R_POWERPC_REL14 | |
687 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
688 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
689 | ppc_object->set_has_14bit_branch(data_shndx); | |
690 | } | |
691 | ||
7e57d19e AM |
692 | // Return whether the last branch is a plt call, and if so, mark the |
693 | // branch as having an R_PPC64_TOCSAVE. | |
694 | bool | |
695 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
696 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
697 | { | |
698 | return (size == 64 | |
699 | && !this->branch_info_.empty() | |
700 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
701 | r_offset, this, symtab)); | |
702 | } | |
703 | ||
704 | // Say the given location, that of a nop in a function prologue with | |
705 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
706 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
707 | void | |
708 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
709 | unsigned int shndx, Address offset) | |
710 | { | |
711 | Symbol_location loc; | |
712 | loc.object = ppc_object; | |
713 | loc.shndx = shndx; | |
714 | loc.offset = offset; | |
715 | this->tocsave_loc_.insert(loc); | |
716 | } | |
717 | ||
718 | // Accessor | |
719 | const Tocsave_loc | |
720 | tocsave_loc() const | |
721 | { | |
722 | return this->tocsave_loc_; | |
723 | } | |
724 | ||
f43ba157 AM |
725 | void |
726 | do_define_standard_symbols(Symbol_table*, Layout*); | |
727 | ||
42cacb20 DE |
728 | // Finalize the sections. |
729 | void | |
f59f41f3 | 730 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
731 | |
732 | // Return the value to use for a dynamic which requires special | |
733 | // treatment. | |
734 | uint64_t | |
735 | do_dynsym_value(const Symbol*) const; | |
736 | ||
c9824451 AM |
737 | // Return the PLT address to use for a local symbol. |
738 | uint64_t | |
739 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
740 | ||
741 | // Return the PLT address to use for a global symbol. | |
742 | uint64_t | |
743 | do_plt_address_for_global(const Symbol*) const; | |
744 | ||
bd73a62d AM |
745 | // Return the offset to use for the GOT_INDX'th got entry which is |
746 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
747 | int64_t | |
748 | do_tls_offset_for_local(const Relobj* object, | |
749 | unsigned int symndx, | |
750 | unsigned int got_indx) const; | |
751 | ||
752 | // Return the offset to use for the GOT_INDX'th got entry which is | |
753 | // for global tls symbol GSYM. | |
754 | int64_t | |
755 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
756 | ||
dc3714f3 AM |
757 | void |
758 | do_function_location(Symbol_location*) const; | |
759 | ||
4d9aa155 AM |
760 | bool |
761 | do_can_check_for_function_pointers() const | |
762 | { return true; } | |
763 | ||
bbec1a5d AM |
764 | // Adjust -fsplit-stack code which calls non-split-stack code. |
765 | void | |
766 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
767 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 768 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
769 | unsigned char* view, section_size_type view_size, |
770 | std::string* from, std::string* to) const; | |
771 | ||
42cacb20 DE |
772 | // Relocate a section. |
773 | void | |
774 | relocate_section(const Relocate_info<size, big_endian>*, | |
775 | unsigned int sh_type, | |
776 | const unsigned char* prelocs, | |
777 | size_t reloc_count, | |
778 | Output_section* output_section, | |
779 | bool needs_special_offset_handling, | |
780 | unsigned char* view, | |
c9269dff | 781 | Address view_address, |
364c7fa5 ILT |
782 | section_size_type view_size, |
783 | const Reloc_symbol_changes*); | |
42cacb20 DE |
784 | |
785 | // Scan the relocs during a relocatable link. | |
786 | void | |
ad0f2072 | 787 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 788 | Layout* layout, |
6fa2a40b | 789 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
790 | unsigned int data_shndx, |
791 | unsigned int sh_type, | |
792 | const unsigned char* prelocs, | |
793 | size_t reloc_count, | |
794 | Output_section* output_section, | |
795 | bool needs_special_offset_handling, | |
796 | size_t local_symbol_count, | |
797 | const unsigned char* plocal_symbols, | |
798 | Relocatable_relocs*); | |
799 | ||
4d625b70 CC |
800 | // Scan the relocs for --emit-relocs. |
801 | void | |
802 | emit_relocs_scan(Symbol_table* symtab, | |
803 | Layout* layout, | |
804 | Sized_relobj_file<size, big_endian>* object, | |
805 | unsigned int data_shndx, | |
806 | unsigned int sh_type, | |
807 | const unsigned char* prelocs, | |
808 | size_t reloc_count, | |
809 | Output_section* output_section, | |
810 | bool needs_special_offset_handling, | |
811 | size_t local_symbol_count, | |
812 | const unsigned char* plocal_syms, | |
813 | Relocatable_relocs* rr); | |
814 | ||
7404fe1b | 815 | // Emit relocations for a section. |
42cacb20 | 816 | void |
7404fe1b AM |
817 | relocate_relocs(const Relocate_info<size, big_endian>*, |
818 | unsigned int sh_type, | |
819 | const unsigned char* prelocs, | |
820 | size_t reloc_count, | |
821 | Output_section* output_section, | |
62fe925a RM |
822 | typename elfcpp::Elf_types<size>::Elf_Off |
823 | offset_in_output_section, | |
7404fe1b AM |
824 | unsigned char*, |
825 | Address view_address, | |
826 | section_size_type, | |
827 | unsigned char* reloc_view, | |
828 | section_size_type reloc_view_size); | |
42cacb20 DE |
829 | |
830 | // Return whether SYM is defined by the ABI. | |
831 | bool | |
9c2d0ef9 | 832 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 833 | { |
cf43a2fe | 834 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
835 | } |
836 | ||
837 | // Return the size of the GOT section. | |
838 | section_size_type | |
0e70b911 | 839 | got_size() const |
42cacb20 DE |
840 | { |
841 | gold_assert(this->got_ != NULL); | |
842 | return this->got_->data_size(); | |
843 | } | |
844 | ||
cf43a2fe AM |
845 | // Get the PLT section. |
846 | const Output_data_plt_powerpc<size, big_endian>* | |
847 | plt_section() const | |
848 | { | |
849 | gold_assert(this->plt_ != NULL); | |
850 | return this->plt_; | |
851 | } | |
852 | ||
e5d5f5ed AM |
853 | // Get the IPLT section. |
854 | const Output_data_plt_powerpc<size, big_endian>* | |
855 | iplt_section() const | |
856 | { | |
857 | gold_assert(this->iplt_ != NULL); | |
858 | return this->iplt_; | |
859 | } | |
860 | ||
cf43a2fe AM |
861 | // Get the .glink section. |
862 | const Output_data_glink<size, big_endian>* | |
863 | glink_section() const | |
864 | { | |
865 | gold_assert(this->glink_ != NULL); | |
866 | return this->glink_; | |
867 | } | |
868 | ||
9055360d AM |
869 | Output_data_glink<size, big_endian>* |
870 | glink_section() | |
871 | { | |
872 | gold_assert(this->glink_ != NULL); | |
873 | return this->glink_; | |
874 | } | |
875 | ||
9d5781f8 AM |
876 | bool has_glink() const |
877 | { return this->glink_ != NULL; } | |
878 | ||
cf43a2fe AM |
879 | // Get the GOT section. |
880 | const Output_data_got_powerpc<size, big_endian>* | |
881 | got_section() const | |
882 | { | |
883 | gold_assert(this->got_ != NULL); | |
884 | return this->got_; | |
885 | } | |
886 | ||
26a4e9cb AM |
887 | // Get the GOT section, creating it if necessary. |
888 | Output_data_got_powerpc<size, big_endian>* | |
889 | got_section(Symbol_table*, Layout*); | |
890 | ||
cf43a2fe AM |
891 | Object* |
892 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
893 | const elfcpp::Ehdr<size, big_endian>&); | |
894 | ||
0e70b911 CC |
895 | // Return the number of entries in the GOT. |
896 | unsigned int | |
897 | got_entry_count() const | |
898 | { | |
899 | if (this->got_ == NULL) | |
900 | return 0; | |
901 | return this->got_size() / (size / 8); | |
902 | } | |
903 | ||
904 | // Return the number of entries in the PLT. | |
905 | unsigned int | |
906 | plt_entry_count() const; | |
907 | ||
908 | // Return the offset of the first non-reserved PLT entry. | |
909 | unsigned int | |
b4f7960d AM |
910 | first_plt_entry_offset() const |
911 | { | |
912 | if (size == 32) | |
913 | return 0; | |
914 | if (this->abiversion() >= 2) | |
915 | return 16; | |
916 | return 24; | |
917 | } | |
0e70b911 CC |
918 | |
919 | // Return the size of each PLT entry. | |
920 | unsigned int | |
b4f7960d AM |
921 | plt_entry_size() const |
922 | { | |
923 | if (size == 32) | |
924 | return 4; | |
925 | if (this->abiversion() >= 2) | |
926 | return 8; | |
927 | return 24; | |
928 | } | |
0e70b911 | 929 | |
d49044c7 AM |
930 | Output_data_save_res<size, big_endian>* |
931 | savres_section() const | |
932 | { | |
933 | return this->savres_section_; | |
934 | } | |
935 | ||
e81fea4d AM |
936 | // Add any special sections for this symbol to the gc work list. |
937 | // For powerpc64, this adds the code section of a function | |
938 | // descriptor. | |
939 | void | |
940 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
941 | ||
942 | // Handle target specific gc actions when adding a gc reference from | |
943 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
944 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
945 | // section of a function descriptor. | |
946 | void | |
947 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 948 | Relobj* src_obj, |
e81fea4d | 949 | unsigned int src_shndx, |
efc6fa12 | 950 | Relobj* dst_obj, |
e81fea4d AM |
951 | unsigned int dst_shndx, |
952 | Address dst_off) const; | |
953 | ||
ec661b9d AM |
954 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
955 | const Stub_tables& | |
956 | stub_tables() const | |
957 | { return this->stub_tables_; } | |
958 | ||
959 | const Output_data_brlt_powerpc<size, big_endian>* | |
960 | brlt_section() const | |
961 | { return this->brlt_section_; } | |
962 | ||
963 | void | |
964 | add_branch_lookup_table(Address to) | |
965 | { | |
966 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
967 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
968 | } | |
969 | ||
970 | Address | |
971 | find_branch_lookup_table(Address to) | |
972 | { | |
973 | typename Branch_lookup_table::const_iterator p | |
974 | = this->branch_lookup_table_.find(to); | |
975 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
976 | } | |
977 | ||
978 | void | |
979 | write_branch_lookup_table(unsigned char *oview) | |
980 | { | |
981 | for (typename Branch_lookup_table::const_iterator p | |
982 | = this->branch_lookup_table_.begin(); | |
983 | p != this->branch_lookup_table_.end(); | |
984 | ++p) | |
985 | { | |
4d5effb9 | 986 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
987 | } |
988 | } | |
989 | ||
590b87ff AM |
990 | // Wrapper used after relax to define a local symbol in output data, |
991 | // from the end if value < 0. | |
992 | void | |
993 | define_local(Symbol_table* symtab, const char* name, | |
994 | Output_data* od, Address value, unsigned int symsize) | |
995 | { | |
996 | Symbol* sym | |
997 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
998 | od, value, symsize, elfcpp::STT_NOTYPE, | |
999 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1000 | static_cast<Signed_address>(value) < 0, | |
1001 | false); | |
1002 | // We are creating this symbol late, so need to fix up things | |
1003 | // done early in Layout::finalize. | |
1004 | sym->set_dynsym_index(-1U); | |
1005 | } | |
1006 | ||
9e69ed50 AM |
1007 | bool |
1008 | plt_thread_safe() const | |
1009 | { return this->plt_thread_safe_; } | |
1010 | ||
7ee7ff70 AM |
1011 | bool |
1012 | plt_localentry0() const | |
1013 | { return this->plt_localentry0_; } | |
1014 | ||
1015 | void | |
1016 | set_has_localentry0() | |
1017 | { | |
1018 | this->has_localentry0_ = true; | |
1019 | } | |
1020 | ||
1021 | bool | |
1022 | is_elfv2_localentry0(const Symbol* gsym) const | |
1023 | { | |
1024 | return (size == 64 | |
1025 | && this->abiversion() >= 2 | |
1026 | && this->plt_localentry0() | |
1027 | && gsym->type() == elfcpp::STT_FUNC | |
1028 | && gsym->is_defined() | |
1029 | && gsym->nonvis() >> 3 == 0); | |
1030 | } | |
1031 | ||
1032 | bool | |
1033 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1034 | unsigned int r_sym) const | |
1035 | { | |
1036 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1037 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1038 | ||
1039 | if (size == 64 | |
1040 | && this->abiversion() >= 2 | |
1041 | && this->plt_localentry0() | |
1042 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1043 | { | |
1044 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1045 | bool is_ordinary; | |
1046 | if (!psymval->is_ifunc_symbol() | |
1047 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1048 | && is_ordinary) | |
1049 | return true; | |
1050 | } | |
1051 | return false; | |
1052 | } | |
1053 | ||
b4f7960d AM |
1054 | int |
1055 | abiversion () const | |
1056 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } | |
1057 | ||
1058 | void | |
1059 | set_abiversion (int ver) | |
1060 | { | |
1061 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1062 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1063 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1064 | this->set_processor_specific_flags(flags); | |
1065 | } | |
1066 | ||
de194d85 | 1067 | // Offset to save stack slot |
b4f7960d AM |
1068 | int |
1069 | stk_toc () const | |
1070 | { return this->abiversion() < 2 ? 40 : 24; } | |
1071 | ||
42cacb20 DE |
1072 | private: |
1073 | ||
e3deeb9c AM |
1074 | class Track_tls |
1075 | { | |
1076 | public: | |
1077 | enum Tls_get_addr | |
1078 | { | |
1079 | NOT_EXPECTED = 0, | |
1080 | EXPECTED = 1, | |
1081 | SKIP = 2, | |
1082 | NORMAL = 3 | |
1083 | }; | |
1084 | ||
1085 | Track_tls() | |
1086 | : tls_get_addr_(NOT_EXPECTED), | |
1087 | relinfo_(NULL), relnum_(0), r_offset_(0) | |
1088 | { } | |
1089 | ||
1090 | ~Track_tls() | |
1091 | { | |
1092 | if (this->tls_get_addr_ != NOT_EXPECTED) | |
1093 | this->missing(); | |
1094 | } | |
1095 | ||
1096 | void | |
1097 | missing(void) | |
1098 | { | |
1099 | if (this->relinfo_ != NULL) | |
1100 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1101 | _("missing expected __tls_get_addr call")); | |
1102 | } | |
1103 | ||
1104 | void | |
1105 | expect_tls_get_addr_call( | |
1106 | const Relocate_info<size, big_endian>* relinfo, | |
1107 | size_t relnum, | |
1108 | Address r_offset) | |
1109 | { | |
1110 | this->tls_get_addr_ = EXPECTED; | |
1111 | this->relinfo_ = relinfo; | |
1112 | this->relnum_ = relnum; | |
1113 | this->r_offset_ = r_offset; | |
1114 | } | |
1115 | ||
1116 | void | |
1117 | expect_tls_get_addr_call() | |
1118 | { this->tls_get_addr_ = EXPECTED; } | |
1119 | ||
1120 | void | |
1121 | skip_next_tls_get_addr_call() | |
1122 | {this->tls_get_addr_ = SKIP; } | |
1123 | ||
1124 | Tls_get_addr | |
1125 | maybe_skip_tls_get_addr_call(unsigned int r_type, const Symbol* gsym) | |
1126 | { | |
1127 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
1128 | || r_type == elfcpp::R_PPC_PLTREL24) | |
1129 | && gsym != NULL | |
1130 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
1131 | Tls_get_addr last_tls = this->tls_get_addr_; | |
1132 | this->tls_get_addr_ = NOT_EXPECTED; | |
1133 | if (is_tls_call && last_tls != EXPECTED) | |
1134 | return last_tls; | |
1135 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1136 | { | |
1137 | this->missing(); | |
1138 | return EXPECTED; | |
1139 | } | |
1140 | return NORMAL; | |
1141 | } | |
1142 | ||
1143 | private: | |
1144 | // What we're up to regarding calls to __tls_get_addr. | |
1145 | // On powerpc, the branch and link insn making a call to | |
1146 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1147 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
1148 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
1149 | // The marker relocation always comes first, and has the same | |
1150 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1151 | // argument. This ties the arg setup insn with the call insn, | |
1152 | // allowing ld to safely optimize away the call. We check that | |
1153 | // every call to __tls_get_addr has a marker relocation, and that | |
1154 | // every marker relocation is on a call to __tls_get_addr. | |
1155 | Tls_get_addr tls_get_addr_; | |
1156 | // Info about the last reloc for error message. | |
1157 | const Relocate_info<size, big_endian>* relinfo_; | |
1158 | size_t relnum_; | |
1159 | Address r_offset_; | |
1160 | }; | |
1161 | ||
42cacb20 | 1162 | // The class which scans relocations. |
e3deeb9c | 1163 | class Scan : protected Track_tls |
42cacb20 DE |
1164 | { |
1165 | public: | |
bfdfa4cd AM |
1166 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1167 | ||
42cacb20 | 1168 | Scan() |
e3deeb9c | 1169 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1170 | { } |
1171 | ||
95a2c8d6 | 1172 | static inline int |
88b8e639 | 1173 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1174 | |
42cacb20 | 1175 | inline void |
ad0f2072 | 1176 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1177 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1178 | unsigned int data_shndx, |
1179 | Output_section* output_section, | |
1180 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1181 | const elfcpp::Sym<size, big_endian>& lsym, |
1182 | bool is_discarded); | |
42cacb20 DE |
1183 | |
1184 | inline void | |
ad0f2072 | 1185 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1186 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1187 | unsigned int data_shndx, |
1188 | Output_section* output_section, | |
1189 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1190 | Symbol* gsym); | |
1191 | ||
21bb3914 ST |
1192 | inline bool |
1193 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1194 | Target_powerpc* , | |
f6971787 | 1195 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1196 | unsigned int , |
2e702c99 RM |
1197 | Output_section* , |
1198 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1199 | unsigned int r_type, |
2e702c99 | 1200 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1201 | { |
1202 | // PowerPC64 .opd is not folded, so any identical function text | |
1203 | // may be folded and we'll still keep function addresses distinct. | |
1204 | // That means no reloc is of concern here. | |
1205 | if (size == 64) | |
f6971787 AM |
1206 | { |
1207 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1208 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1209 | if (ppcobj->abiversion() == 1) | |
1210 | return false; | |
1211 | } | |
1212 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
1213 | // function code might be taking the address of the function. |
1214 | return !is_branch_reloc(r_type); | |
1215 | } | |
21bb3914 ST |
1216 | |
1217 | inline bool | |
1218 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1219 | Target_powerpc* , | |
f6971787 | 1220 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1221 | unsigned int , |
1222 | Output_section* , | |
4d9aa155 AM |
1223 | const elfcpp::Rela<size, big_endian>& , |
1224 | unsigned int r_type, | |
1225 | Symbol*) | |
1226 | { | |
1227 | // As above. | |
1228 | if (size == 64) | |
f6971787 AM |
1229 | { |
1230 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1231 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1232 | if (ppcobj->abiversion() == 1) | |
1233 | return false; | |
1234 | } | |
4d9aa155 AM |
1235 | return !is_branch_reloc(r_type); |
1236 | } | |
21bb3914 | 1237 | |
b3ccdeb5 | 1238 | static bool |
9055360d AM |
1239 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1240 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1241 | unsigned int r_type, bool report_err); |
1242 | ||
42cacb20 DE |
1243 | private: |
1244 | static void | |
6fa2a40b | 1245 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1246 | unsigned int r_type); |
1247 | ||
1248 | static void | |
6fa2a40b | 1249 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1250 | unsigned int r_type, Symbol*); |
1251 | ||
1252 | static void | |
1253 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1254 | Target_powerpc* target); | |
1255 | ||
1256 | void | |
1257 | check_non_pic(Relobj*, unsigned int r_type); | |
1258 | ||
1259 | // Whether we have issued an error about a non-PIC compilation. | |
1260 | bool issued_non_pic_error_; | |
1261 | }; | |
1262 | ||
1611bc4a AM |
1263 | bool |
1264 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1265 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1266 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1267 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1268 | |
42cacb20 | 1269 | // The class which implements relocation. |
e3deeb9c | 1270 | class Relocate : protected Track_tls |
42cacb20 DE |
1271 | { |
1272 | public: | |
dd93cd0a AM |
1273 | // Use 'at' branch hints when true, 'y' when false. |
1274 | // FIXME maybe: set this with an option. | |
1275 | static const bool is_isa_v2 = true; | |
1276 | ||
dd93cd0a | 1277 | Relocate() |
e3deeb9c | 1278 | : Track_tls() |
dd93cd0a AM |
1279 | { } |
1280 | ||
42cacb20 DE |
1281 | // Do a relocation. Return false if the caller should not issue |
1282 | // any warnings about this relocation. | |
1283 | inline bool | |
91a65d2f AM |
1284 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1285 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1286 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1287 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1288 | section_size_type); |
42cacb20 DE |
1289 | }; |
1290 | ||
168a4726 AM |
1291 | class Relocate_comdat_behavior |
1292 | { | |
1293 | public: | |
1294 | // Decide what the linker should do for relocations that refer to | |
1295 | // discarded comdat sections. | |
1296 | inline Comdat_behavior | |
1297 | get(const char* name) | |
1298 | { | |
1299 | gold::Default_comdat_behavior default_behavior; | |
1300 | Comdat_behavior ret = default_behavior.get(name); | |
1301 | if (ret == CB_WARNING) | |
1302 | { | |
1303 | if (size == 32 | |
1304 | && (strcmp(name, ".fixup") == 0 | |
1305 | || strcmp(name, ".got2") == 0)) | |
1306 | ret = CB_IGNORE; | |
1307 | if (size == 64 | |
1308 | && (strcmp(name, ".opd") == 0 | |
1309 | || strcmp(name, ".toc") == 0 | |
1310 | || strcmp(name, ".toc1") == 0)) | |
1311 | ret = CB_IGNORE; | |
1312 | } | |
1313 | return ret; | |
1314 | } | |
1315 | }; | |
1316 | ||
dd93cd0a AM |
1317 | // Optimize the TLS relocation type based on what we know about the |
1318 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1319 | // known at link time. | |
1320 | ||
1321 | tls::Tls_optimization | |
1322 | optimize_tls_gd(bool is_final) | |
1323 | { | |
1324 | // If we are generating a shared library, then we can't do anything | |
1325 | // in the linker. | |
1326 | if (parameters->options().shared()) | |
1327 | return tls::TLSOPT_NONE; | |
1328 | ||
1329 | if (!is_final) | |
1330 | return tls::TLSOPT_TO_IE; | |
1331 | return tls::TLSOPT_TO_LE; | |
1332 | } | |
1333 | ||
1334 | tls::Tls_optimization | |
1335 | optimize_tls_ld() | |
1336 | { | |
1337 | if (parameters->options().shared()) | |
1338 | return tls::TLSOPT_NONE; | |
1339 | ||
1340 | return tls::TLSOPT_TO_LE; | |
1341 | } | |
1342 | ||
1343 | tls::Tls_optimization | |
1344 | optimize_tls_ie(bool is_final) | |
1345 | { | |
1346 | if (!is_final || parameters->options().shared()) | |
1347 | return tls::TLSOPT_NONE; | |
1348 | ||
1349 | return tls::TLSOPT_TO_LE; | |
1350 | } | |
cf43a2fe | 1351 | |
cf43a2fe AM |
1352 | // Create glink. |
1353 | void | |
1354 | make_glink_section(Layout*); | |
42cacb20 | 1355 | |
cf43a2fe AM |
1356 | // Create the PLT section. |
1357 | void | |
40b469d7 | 1358 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1359 | |
e5d5f5ed | 1360 | void |
40b469d7 | 1361 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1362 | |
ec661b9d AM |
1363 | void |
1364 | make_brlt_section(Layout*); | |
1365 | ||
42cacb20 DE |
1366 | // Create a PLT entry for a global symbol. |
1367 | void | |
ec661b9d | 1368 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1369 | |
1370 | // Create a PLT entry for a local IFUNC symbol. | |
1371 | void | |
40b469d7 | 1372 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1373 | Sized_relobj_file<size, big_endian>*, |
1374 | unsigned int); | |
1375 | ||
42cacb20 | 1376 | |
dd93cd0a AM |
1377 | // Create a GOT entry for local dynamic __tls_get_addr. |
1378 | unsigned int | |
1379 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1380 | Sized_relobj_file<size, big_endian>* object); | |
1381 | ||
42cacb20 | 1382 | unsigned int |
dd93cd0a AM |
1383 | tlsld_got_offset() const |
1384 | { | |
1385 | return this->tlsld_got_offset_; | |
1386 | } | |
42cacb20 | 1387 | |
42cacb20 DE |
1388 | // Get the dynamic reloc section, creating it if necessary. |
1389 | Reloc_section* | |
1390 | rela_dyn_section(Layout*); | |
1391 | ||
b3ccdeb5 AM |
1392 | // Similarly, but for ifunc symbols get the one for ifunc. |
1393 | Reloc_section* | |
1394 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1395 | ||
42cacb20 DE |
1396 | // Copy a relocation against a global symbol. |
1397 | void | |
ef9beddf | 1398 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1399 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1400 | unsigned int shndx, Output_section* output_section, |
1401 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1402 | { | |
859d7987 | 1403 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1404 | this->copy_relocs_.copy_reloc(symtab, layout, |
1405 | symtab->get_sized_symbol<size>(sym), | |
1406 | object, shndx, output_section, | |
859d7987 CC |
1407 | r_type, reloc.get_r_offset(), |
1408 | reloc.get_r_addend(), | |
1409 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1410 | } |
1411 | ||
0cfdc767 | 1412 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1413 | void |
a3e60ddb | 1414 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1415 | |
1416 | // Sort output sections by address. | |
1417 | struct Sort_sections | |
1418 | { | |
1419 | bool | |
1420 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1421 | { return sec1->address() < sec2->address(); } | |
1422 | }; | |
1423 | ||
1424 | class Branch_info | |
1425 | { | |
1426 | public: | |
1427 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1428 | unsigned int data_shndx, | |
1429 | Address r_offset, | |
1430 | unsigned int r_type, | |
1431 | unsigned int r_sym, | |
1432 | Address addend) | |
1433 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1434 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1435 | { } |
1436 | ||
1437 | ~Branch_info() | |
1438 | { } | |
1439 | ||
7e57d19e AM |
1440 | // Return whether this branch is going via a plt call stub, and if |
1441 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1442 | bool | |
1443 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1444 | unsigned int shndx, Address offset, | |
1445 | Target_powerpc* target, Symbol_table* symtab); | |
1446 | ||
ec661b9d | 1447 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1448 | bool |
ec661b9d AM |
1449 | make_stub(Stub_table<size, big_endian>*, |
1450 | Stub_table<size, big_endian>*, | |
1451 | Symbol_table*) const; | |
1452 | ||
1453 | private: | |
1454 | // The branch location.. | |
1455 | Powerpc_relobj<size, big_endian>* object_; | |
1456 | unsigned int shndx_; | |
1457 | Address offset_; | |
1458 | // ..and the branch type and destination. | |
7e57d19e AM |
1459 | unsigned int r_type_ : 31; |
1460 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1461 | unsigned int r_sym_; |
1462 | Address addend_; | |
1463 | }; | |
1464 | ||
42cacb20 DE |
1465 | // Information about this specific target which we pass to the |
1466 | // general Target structure. | |
1467 | static Target::Target_info powerpc_info; | |
1468 | ||
1469 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1470 | // These values are exposed to the ABI in an incremental link. |
1471 | // Do not renumber existing values without changing the version | |
1472 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1473 | enum Got_type |
1474 | { | |
dd93cd0a AM |
1475 | GOT_TYPE_STANDARD, |
1476 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1477 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1478 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1479 | }; |
1480 | ||
ec661b9d | 1481 | // The GOT section. |
cf43a2fe | 1482 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1483 | // The PLT section. This is a container for a table of addresses, |
1484 | // and their relocations. Each address in the PLT has a dynamic | |
1485 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1486 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1487 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1488 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1489 | // linker adds a stub that loads the PLT entry into ctr then | |
1490 | // branches to ctr. There may be more than one stub for each PLT | |
1491 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1492 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1493 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1494 | // The IPLT section. Like plt_, this is a container for a table of |
1495 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1496 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1497 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1498 | // entry in .glink for lazy resolution, and the relocation section | |
1499 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1500 | // the relocation section may contain relocations against | |
1501 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1502 | // relocation section will appear at the end of other dynamic | |
1503 | // relocations, so that ld.so applies these relocations after other | |
1504 | // dynamic relocations. In a static executable, the relocation | |
1505 | // section is emitted and marked with __rela_iplt_start and | |
1506 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1507 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
ec661b9d AM |
1508 | // Section holding long branch destinations. |
1509 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1510 | // The .glink section. | |
cf43a2fe | 1511 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1512 | // The dynamic reloc section. |
42cacb20 DE |
1513 | Reloc_section* rela_dyn_; |
1514 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1515 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1516 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1517 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1518 | |
1519 | Stub_tables stub_tables_; | |
1520 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1521 | Branch_lookup_table branch_lookup_table_; | |
1522 | ||
1523 | typedef std::vector<Branch_info> Branches; | |
1524 | Branches branch_info_; | |
7e57d19e | 1525 | Tocsave_loc tocsave_loc_; |
9e69ed50 AM |
1526 | |
1527 | bool plt_thread_safe_; | |
7ee7ff70 AM |
1528 | bool plt_localentry0_; |
1529 | bool plt_localentry0_init_; | |
1530 | bool has_localentry0_; | |
a3e60ddb AM |
1531 | |
1532 | bool relax_failed_; | |
1533 | int relax_fail_count_; | |
1534 | int32_t stub_group_size_; | |
d49044c7 AM |
1535 | |
1536 | Output_data_save_res<size, big_endian> *savres_section_; | |
42cacb20 DE |
1537 | }; |
1538 | ||
1539 | template<> | |
1540 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1541 | { | |
1542 | 32, // size | |
1543 | true, // is_big_endian | |
1544 | elfcpp::EM_PPC, // machine_code | |
1545 | false, // has_make_symbol | |
1546 | false, // has_resolve | |
1547 | false, // has_code_fill | |
1548 | true, // is_default_stack_executable | |
b3ce541e | 1549 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1550 | '\0', // wrap_char |
1551 | "/usr/lib/ld.so.1", // dynamic_linker | |
1552 | 0x10000000, // default_text_segment_address | |
1553 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1554 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1555 | false, // isolate_execinstr |
1556 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1557 | elfcpp::SHN_UNDEF, // small_common_shndx |
1558 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1559 | 0, // small_common_section_flags | |
05a352e6 DK |
1560 | 0, // large_common_section_flags |
1561 | NULL, // attributes_section | |
a67858e0 | 1562 | NULL, // attributes_vendor |
8d9743bd MK |
1563 | "_start", // entry_symbol_name |
1564 | 32, // hash_entry_size | |
42cacb20 DE |
1565 | }; |
1566 | ||
1567 | template<> | |
1568 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1569 | { | |
1570 | 32, // size | |
1571 | false, // is_big_endian | |
1572 | elfcpp::EM_PPC, // machine_code | |
1573 | false, // has_make_symbol | |
1574 | false, // has_resolve | |
1575 | false, // has_code_fill | |
1576 | true, // is_default_stack_executable | |
b3ce541e | 1577 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1578 | '\0', // wrap_char |
1579 | "/usr/lib/ld.so.1", // dynamic_linker | |
1580 | 0x10000000, // default_text_segment_address | |
1581 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1582 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1583 | false, // isolate_execinstr |
1584 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1585 | elfcpp::SHN_UNDEF, // small_common_shndx |
1586 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1587 | 0, // small_common_section_flags | |
05a352e6 DK |
1588 | 0, // large_common_section_flags |
1589 | NULL, // attributes_section | |
a67858e0 | 1590 | NULL, // attributes_vendor |
8d9743bd MK |
1591 | "_start", // entry_symbol_name |
1592 | 32, // hash_entry_size | |
42cacb20 DE |
1593 | }; |
1594 | ||
1595 | template<> | |
1596 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1597 | { | |
1598 | 64, // size | |
1599 | true, // is_big_endian | |
1600 | elfcpp::EM_PPC64, // machine_code | |
1601 | false, // has_make_symbol | |
1602 | false, // has_resolve | |
1603 | false, // has_code_fill | |
1604 | true, // is_default_stack_executable | |
b3ce541e | 1605 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1606 | '\0', // wrap_char |
1607 | "/usr/lib/ld.so.1", // dynamic_linker | |
1608 | 0x10000000, // default_text_segment_address | |
1609 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1610 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1611 | false, // isolate_execinstr |
1612 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1613 | elfcpp::SHN_UNDEF, // small_common_shndx |
1614 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1615 | 0, // small_common_section_flags | |
05a352e6 DK |
1616 | 0, // large_common_section_flags |
1617 | NULL, // attributes_section | |
a67858e0 | 1618 | NULL, // attributes_vendor |
8d9743bd MK |
1619 | "_start", // entry_symbol_name |
1620 | 32, // hash_entry_size | |
42cacb20 DE |
1621 | }; |
1622 | ||
1623 | template<> | |
1624 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1625 | { | |
1626 | 64, // size | |
1627 | false, // is_big_endian | |
1628 | elfcpp::EM_PPC64, // machine_code | |
1629 | false, // has_make_symbol | |
1630 | false, // has_resolve | |
1631 | false, // has_code_fill | |
1632 | true, // is_default_stack_executable | |
b3ce541e | 1633 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1634 | '\0', // wrap_char |
1635 | "/usr/lib/ld.so.1", // dynamic_linker | |
1636 | 0x10000000, // default_text_segment_address | |
1637 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1638 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1639 | false, // isolate_execinstr |
1640 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1641 | elfcpp::SHN_UNDEF, // small_common_shndx |
1642 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1643 | 0, // small_common_section_flags | |
05a352e6 DK |
1644 | 0, // large_common_section_flags |
1645 | NULL, // attributes_section | |
a67858e0 | 1646 | NULL, // attributes_vendor |
8d9743bd MK |
1647 | "_start", // entry_symbol_name |
1648 | 32, // hash_entry_size | |
42cacb20 DE |
1649 | }; |
1650 | ||
dd93cd0a AM |
1651 | inline bool |
1652 | is_branch_reloc(unsigned int r_type) | |
1653 | { | |
1654 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1655 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1656 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1657 | || r_type == elfcpp::R_POWERPC_REL14 | |
1658 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1659 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1660 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1661 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1662 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1663 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1664 | } | |
1665 | ||
1666 | // If INSN is an opcode that may be used with an @tls operand, return | |
1667 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1668 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1669 | uint32_t | |
1670 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1671 | { | |
1672 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1673 | return 0; | |
1674 | ||
1675 | unsigned int rtra; | |
1676 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1677 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1678 | else if (((insn >> 16) & 0x1f) == reg) | |
1679 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1680 | else | |
1681 | return 0; | |
1682 | ||
1683 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1684 | // add -> addi | |
1685 | insn = 14 << 26; | |
1686 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1687 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1688 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1689 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1690 | // load and store indexed -> dform | |
1691 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1692 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1693 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1694 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1695 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1696 | // lwax -> lwa | |
1697 | insn = (58 << 26) | 2; | |
1698 | else | |
1699 | return 0; | |
1700 | insn |= rtra; | |
1701 | return insn; | |
1702 | } | |
1703 | ||
dd93cd0a | 1704 | |
42cacb20 DE |
1705 | template<int size, bool big_endian> |
1706 | class Powerpc_relocate_functions | |
1707 | { | |
dd93cd0a | 1708 | public: |
f4baf0d4 | 1709 | enum Overflow_check |
dd93cd0a | 1710 | { |
f4baf0d4 AM |
1711 | CHECK_NONE, |
1712 | CHECK_SIGNED, | |
b80eed39 AM |
1713 | CHECK_UNSIGNED, |
1714 | CHECK_BITFIELD, | |
1715 | CHECK_LOW_INSN, | |
1716 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1717 | }; |
1718 | ||
f4baf0d4 | 1719 | enum Status |
dd93cd0a | 1720 | { |
f4baf0d4 AM |
1721 | STATUS_OK, |
1722 | STATUS_OVERFLOW | |
1723 | }; | |
dd93cd0a | 1724 | |
42cacb20 | 1725 | private: |
c9269dff | 1726 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1727 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1728 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1729 | |
dd93cd0a AM |
1730 | template<int valsize> |
1731 | static inline bool | |
1732 | has_overflow_signed(Address value) | |
1733 | { | |
1734 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1735 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1736 | limit <<= ((valsize - 1) >> 1); | |
1737 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1738 | return value + limit > (limit << 1) - 1; | |
1739 | } | |
1740 | ||
1741 | template<int valsize> | |
1742 | static inline bool | |
b80eed39 | 1743 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1744 | { |
1745 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1746 | limit <<= ((valsize - 1) >> 1); | |
1747 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1748 | return value > (limit << 1) - 1; |
1749 | } | |
1750 | ||
1751 | template<int valsize> | |
1752 | static inline bool | |
1753 | has_overflow_bitfield(Address value) | |
1754 | { | |
1755 | return (has_overflow_unsigned<valsize>(value) | |
1756 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1757 | } |
1758 | ||
1759 | template<int valsize> | |
f4baf0d4 AM |
1760 | static inline Status |
1761 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1762 | { |
f4baf0d4 | 1763 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1764 | { |
1765 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1766 | return STATUS_OVERFLOW; |
dd93cd0a | 1767 | } |
b80eed39 AM |
1768 | else if (overflow == CHECK_UNSIGNED) |
1769 | { | |
1770 | if (has_overflow_unsigned<valsize>(value)) | |
1771 | return STATUS_OVERFLOW; | |
1772 | } | |
f4baf0d4 | 1773 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1774 | { |
1775 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1776 | return STATUS_OVERFLOW; |
dd93cd0a | 1777 | } |
f4baf0d4 | 1778 | return STATUS_OK; |
dd93cd0a AM |
1779 | } |
1780 | ||
cf43a2fe | 1781 | // Do a simple RELA relocation |
0cfb0717 | 1782 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1783 | static inline Status |
1784 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1785 | { |
0cfb0717 | 1786 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1787 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1788 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1789 | return overflowed<valsize>(value, overflow); |
1790 | } | |
1791 | ||
0cfb0717 | 1792 | template<int fieldsize, int valsize> |
f4baf0d4 | 1793 | static inline Status |
42cacb20 DE |
1794 | rela(unsigned char* view, |
1795 | unsigned int right_shift, | |
0cfb0717 | 1796 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1797 | Address value, |
f4baf0d4 | 1798 | Overflow_check overflow) |
42cacb20 | 1799 | { |
0cfb0717 | 1800 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1801 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1802 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1803 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1804 | val &= ~dst_mask; |
1805 | reloc &= dst_mask; | |
0cfb0717 | 1806 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1807 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1808 | } |
1809 | ||
cf43a2fe | 1810 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1811 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1812 | static inline Status |
1813 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1814 | { |
0cfb0717 | 1815 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1816 | return overflowed<valsize>(value, overflow); |
1817 | } | |
1818 | ||
0cfb0717 | 1819 | template<int fieldsize, int valsize> |
f4baf0d4 | 1820 | static inline Status |
cf43a2fe AM |
1821 | rela_ua(unsigned char* view, |
1822 | unsigned int right_shift, | |
0cfb0717 | 1823 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1824 | Address value, |
f4baf0d4 | 1825 | Overflow_check overflow) |
42cacb20 | 1826 | { |
0cfb0717 | 1827 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1828 | Valtype; |
0cfb0717 | 1829 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1830 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1831 | val &= ~dst_mask; |
1832 | reloc &= dst_mask; | |
0cfb0717 | 1833 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1834 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1835 | } |
1836 | ||
42cacb20 | 1837 | public: |
dd93cd0a | 1838 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1839 | static inline void |
dd93cd0a | 1840 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1841 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1842 | |
dd93cd0a | 1843 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1844 | static inline void |
dd93cd0a | 1845 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1846 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1847 | |
1848 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1849 | static inline Status |
1850 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1851 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1852 | |
1853 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1854 | static inline Status |
1855 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1856 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1857 | |
1858 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1859 | static inline Status |
1860 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1861 | { |
0cfb0717 AM |
1862 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1863 | value, overflow); | |
f4baf0d4 AM |
1864 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1865 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1866 | return stat; |
1867 | } | |
42cacb20 DE |
1868 | |
1869 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1870 | static inline Status |
1871 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1872 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 1873 | |
dd93cd0a | 1874 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1875 | static inline Status |
1876 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1877 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 1878 | |
dd93cd0a | 1879 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1880 | static inline Status |
1881 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1882 | { |
0cfb0717 | 1883 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 1884 | if ((value & 3) != 0) |
f4baf0d4 | 1885 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
1886 | return stat; |
1887 | } | |
42cacb20 | 1888 | |
a680de9a PB |
1889 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
1890 | static inline Status | |
1891 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
1892 | { | |
1893 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
1894 | if ((value & 15) != 0) | |
1895 | stat = STATUS_OVERFLOW; | |
1896 | return stat; | |
1897 | } | |
1898 | ||
42cacb20 DE |
1899 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1900 | static inline void | |
dd93cd0a | 1901 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 1902 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1903 | |
c9269dff | 1904 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1905 | static inline void |
dd93cd0a AM |
1906 | addr16_ha(unsigned char* view, Address value) |
1907 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1908 | |
dd93cd0a | 1909 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1910 | static inline void |
dd93cd0a | 1911 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 1912 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1913 | |
dd93cd0a | 1914 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1915 | static inline void |
dd93cd0a AM |
1916 | addr16_ha2(unsigned char* view, Address value) |
1917 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1918 | |
dd93cd0a | 1919 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1920 | static inline void |
dd93cd0a | 1921 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 1922 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1923 | |
dd93cd0a | 1924 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1925 | static inline void |
dd93cd0a AM |
1926 | addr16_ha3(unsigned char* view, Address value) |
1927 | { This::addr16_hi3(view, value + 0x8000); } | |
1928 | ||
1929 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1930 | static inline Status |
1931 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1932 | { |
0cfb0717 | 1933 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
1934 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1935 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1936 | return stat; |
1937 | } | |
a680de9a PB |
1938 | |
1939 | // R_POWERPC_REL16DX_HA | |
1940 | static inline Status | |
1941 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
1942 | { | |
1943 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
1944 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1945 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
1946 | value += 0x8000; | |
1947 | value = static_cast<SignedAddress>(value) >> 16; | |
1948 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
1949 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
1950 | return overflowed<16>(value, overflow); | |
1951 | } | |
cf43a2fe AM |
1952 | }; |
1953 | ||
b4f7960d AM |
1954 | // Set ABI version for input and output. |
1955 | ||
1956 | template<int size, bool big_endian> | |
1957 | void | |
1958 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
1959 | { | |
1960 | this->e_flags_ |= ver; | |
1961 | if (this->abiversion() != 0) | |
1962 | { | |
1963 | Target_powerpc<size, big_endian>* target = | |
1964 | static_cast<Target_powerpc<size, big_endian>*>( | |
1965 | parameters->sized_target<size, big_endian>()); | |
1966 | if (target->abiversion() == 0) | |
1967 | target->set_abiversion(this->abiversion()); | |
1968 | else if (target->abiversion() != this->abiversion()) | |
1969 | gold_error(_("%s: ABI version %d is not compatible " | |
1970 | "with ABI version %d output"), | |
1971 | this->name().c_str(), | |
1972 | this->abiversion(), target->abiversion()); | |
1973 | ||
1974 | } | |
1975 | } | |
1976 | ||
5edad15d AM |
1977 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
1978 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
1979 | |
1980 | template<int size, bool big_endian> | |
1981 | bool | |
1982 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1983 | Read_symbols_data* sd) | |
1984 | { | |
c9269dff AM |
1985 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1986 | const unsigned char* namesu = sd->section_names->data(); | |
1987 | const char* names = reinterpret_cast<const char*>(namesu); | |
1988 | section_size_type names_size = sd->section_names_size; | |
1989 | const unsigned char* s; | |
1990 | ||
dc3714f3 AM |
1991 | s = this->template find_shdr<size, big_endian>(pshdrs, |
1992 | size == 32 ? ".got2" : ".opd", | |
1993 | names, names_size, NULL); | |
c9269dff AM |
1994 | if (s != NULL) |
1995 | { | |
1996 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1997 | this->special_ = ndx; | |
b4f7960d AM |
1998 | if (size == 64) |
1999 | { | |
2000 | if (this->abiversion() == 0) | |
2001 | this->set_abiversion(1); | |
2002 | else if (this->abiversion() > 1) | |
2003 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2004 | this->name().c_str(), this->abiversion()); | |
2005 | } | |
c9269dff | 2006 | } |
5edad15d AM |
2007 | if (size == 64) |
2008 | { | |
2009 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2010 | names, names_size, NULL); | |
2011 | if (s != NULL) | |
2012 | { | |
2013 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2014 | this->relatoc_ = ndx; | |
2015 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2016 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2017 | } | |
2018 | } | |
c9269dff AM |
2019 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2020 | } | |
2021 | ||
2022 | // Examine .rela.opd to build info about function entry points. | |
2023 | ||
2024 | template<int size, bool big_endian> | |
2025 | void | |
2026 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2027 | size_t reloc_count, | |
2028 | const unsigned char* prelocs, | |
2029 | const unsigned char* plocal_syms) | |
2030 | { | |
2031 | if (size == 64) | |
cf43a2fe | 2032 | { |
0e123f69 AM |
2033 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2034 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2035 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2036 | Address expected_off = 0; |
2037 | bool regular = true; | |
2038 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2039 | |
2040 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2041 | { |
c9269dff AM |
2042 | Reltype reloc(prelocs); |
2043 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2044 | = reloc.get_r_info(); | |
2045 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2046 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2047 | { | |
2048 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2049 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2050 | bool is_ordinary; | |
2051 | unsigned int shndx; | |
2052 | if (r_sym < this->local_symbol_count()) | |
2053 | { | |
2054 | typename elfcpp::Sym<size, big_endian> | |
2055 | lsym(plocal_syms + r_sym * sym_size); | |
2056 | shndx = lsym.get_st_shndx(); | |
2057 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2058 | value = lsym.get_st_value(); | |
2059 | } | |
2060 | else | |
2061 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2062 | &is_ordinary); | |
2063 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2064 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2065 | if (i == 2) |
2066 | { | |
2067 | expected_off = reloc.get_r_offset(); | |
2068 | opd_ent_size = expected_off; | |
2069 | } | |
2070 | else if (expected_off != reloc.get_r_offset()) | |
2071 | regular = false; | |
2072 | expected_off += opd_ent_size; | |
2073 | } | |
2074 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2075 | { | |
2076 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2077 | regular = false; | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2082 | this->name().c_str(), r_type); | |
2083 | regular = false; | |
c9269dff AM |
2084 | } |
2085 | } | |
ec4dbad3 AM |
2086 | if (reloc_count <= 2) |
2087 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2088 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2089 | regular = false; | |
2090 | if (!regular) | |
2091 | { | |
2092 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2093 | this->name().c_str()); | |
2094 | opd_ent_size = 0; | |
2095 | } | |
c9269dff AM |
2096 | } |
2097 | } | |
2098 | ||
5edad15d AM |
2099 | // Returns true if a code sequence loading the TOC entry at VALUE |
2100 | // relative to the TOC pointer can be converted into code calculating | |
2101 | // a TOC pointer relative offset. | |
2102 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2103 | ||
2104 | template<int size, bool big_endian> | |
2105 | bool | |
2106 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2107 | Target_powerpc<size, big_endian>* target, | |
2108 | Address* value) | |
2109 | { | |
2110 | if (size != 64) | |
2111 | return false; | |
2112 | ||
e666304e AM |
2113 | // With -mcmodel=medium code it is quite possible to have |
2114 | // toc-relative relocs referring to objects outside the TOC. | |
2115 | // Don't try to look at a non-existent TOC. | |
2116 | if (this->toc_shndx() == 0) | |
2117 | return false; | |
2118 | ||
5edad15d AM |
2119 | // Convert VALUE back to an address by adding got_base (see below), |
2120 | // then to an offset in the TOC by subtracting the TOC output | |
2121 | // section address and the TOC output offset. Since this TOC output | |
2122 | // section and the got output section are one and the same, we can | |
2123 | // omit adding and subtracting the output section address. | |
2124 | Address off = (*value + this->toc_base_offset() | |
2125 | - this->output_section_offset(this->toc_shndx())); | |
2126 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2127 | // TOC relative access to variables outside the TOC. Those of | |
2128 | // course can't be optimized. We also don't try to optimize code | |
2129 | // that is using a different object's TOC. | |
2130 | if (off >= this->section_size(this->toc_shndx())) | |
2131 | return false; | |
2132 | ||
2133 | if (this->no_toc_opt(off)) | |
2134 | return false; | |
2135 | ||
2136 | section_size_type vlen; | |
2137 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2138 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2139 | // The TOC pointer | |
2140 | Address got_base = (target->got_section()->output_section()->address() | |
2141 | + this->toc_base_offset()); | |
2142 | addr -= got_base; | |
857e829e | 2143 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2144 | return false; |
2145 | ||
2146 | *value = addr; | |
2147 | return true; | |
2148 | } | |
2149 | ||
2150 | // Perform the Sized_relobj_file method, then set up opd info from | |
2151 | // .opd relocs. | |
2152 | ||
c9269dff AM |
2153 | template<int size, bool big_endian> |
2154 | void | |
2155 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2156 | { | |
2157 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2158 | if (size == 64) | |
2159 | { | |
2160 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2161 | p != rd->relocs.end(); | |
2162 | ++p) | |
2163 | { | |
2164 | if (p->data_shndx == this->opd_shndx()) | |
2165 | { | |
ec4dbad3 AM |
2166 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2167 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2168 | if (opd_size != 0) | |
2169 | { | |
2170 | this->init_opd(opd_size); | |
2171 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2172 | rd->local_symbols->data()); | |
2173 | } | |
c9269dff AM |
2174 | break; |
2175 | } | |
cf43a2fe AM |
2176 | } |
2177 | } | |
cf43a2fe AM |
2178 | } |
2179 | ||
b4f7960d AM |
2180 | // Read the symbols then set up st_other vector. |
2181 | ||
2182 | template<int size, bool big_endian> | |
2183 | void | |
2184 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2185 | { | |
f35c4853 | 2186 | this->base_read_symbols(sd); |
b4f7960d AM |
2187 | if (size == 64) |
2188 | { | |
2189 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2190 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2191 | const unsigned int loccount = this->do_local_symbol_count(); | |
2192 | if (loccount != 0) | |
2193 | { | |
2194 | this->st_other_.resize(loccount); | |
2195 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2196 | off_t locsize = loccount * sym_size; | |
2197 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2198 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2199 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2200 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2201 | locsize, true, false); | |
2202 | psyms += sym_size; | |
2203 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2204 | { | |
2205 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2206 | unsigned char st_other = sym.get_st_other(); | |
2207 | this->st_other_[i] = st_other; | |
2208 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2209 | { | |
2210 | if (this->abiversion() == 0) | |
2211 | this->set_abiversion(2); | |
2212 | else if (this->abiversion() < 2) | |
2213 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2214 | " for ABI version 1"), | |
2215 | this->name().c_str(), i); | |
2216 | } | |
2217 | } | |
2218 | } | |
2219 | } | |
2220 | } | |
2221 | ||
2222 | template<int size, bool big_endian> | |
2223 | void | |
2224 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2225 | { | |
2226 | this->e_flags_ |= ver; | |
2227 | if (this->abiversion() != 0) | |
2228 | { | |
2229 | Target_powerpc<size, big_endian>* target = | |
2230 | static_cast<Target_powerpc<size, big_endian>*>( | |
2231 | parameters->sized_target<size, big_endian>()); | |
2232 | if (target->abiversion() == 0) | |
2233 | target->set_abiversion(this->abiversion()); | |
2234 | else if (target->abiversion() != this->abiversion()) | |
2235 | gold_error(_("%s: ABI version %d is not compatible " | |
2236 | "with ABI version %d output"), | |
2237 | this->name().c_str(), | |
2238 | this->abiversion(), target->abiversion()); | |
2239 | ||
2240 | } | |
2241 | } | |
2242 | ||
f35c4853 | 2243 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2244 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2245 | ||
2246 | template<int size, bool big_endian> | |
2247 | void | |
2248 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2249 | { | |
f35c4853 | 2250 | this->base_read_symbols(sd); |
dc3714f3 AM |
2251 | if (size == 64) |
2252 | { | |
2253 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2254 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2255 | const unsigned char* namesu = sd->section_names->data(); | |
2256 | const char* names = reinterpret_cast<const char*>(namesu); | |
2257 | const unsigned char* s = NULL; | |
2258 | const unsigned char* opd; | |
2259 | section_size_type opd_size; | |
2260 | ||
2261 | // Find and read .opd section. | |
2262 | while (1) | |
2263 | { | |
2264 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2265 | sd->section_names_size, | |
2266 | s); | |
2267 | if (s == NULL) | |
2268 | return; | |
2269 | ||
2270 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2271 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2272 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2273 | { | |
b4f7960d AM |
2274 | if (this->abiversion() == 0) |
2275 | this->set_abiversion(1); | |
2276 | else if (this->abiversion() > 1) | |
2277 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2278 | this->name().c_str(), this->abiversion()); | |
2279 | ||
dc3714f3 AM |
2280 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2281 | this->opd_address_ = shdr.get_sh_addr(); | |
2282 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2283 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2284 | true, false); | |
2285 | break; | |
2286 | } | |
2287 | } | |
2288 | ||
2289 | // Build set of executable sections. | |
2290 | // Using a set is probably overkill. There is likely to be only | |
2291 | // a few executable sections, typically .init, .text and .fini, | |
2292 | // and they are generally grouped together. | |
2293 | typedef std::set<Sec_info> Exec_sections; | |
2294 | Exec_sections exec_sections; | |
2295 | s = pshdrs; | |
2296 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2297 | { | |
2298 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2299 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2300 | && ((shdr.get_sh_flags() | |
2301 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2302 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2303 | && shdr.get_sh_size() != 0) | |
2304 | { | |
2305 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2306 | shdr.get_sh_size(), i)); | |
2307 | } | |
2308 | } | |
2309 | if (exec_sections.empty()) | |
2310 | return; | |
2311 | ||
2312 | // Look over the OPD entries. This is complicated by the fact | |
2313 | // that some binaries will use two-word entries while others | |
2314 | // will use the standard three-word entries. In most cases | |
2315 | // the third word (the environment pointer for languages like | |
2316 | // Pascal) is unused and will be zero. If the third word is | |
2317 | // used it should not be pointing into executable sections, | |
2318 | // I think. | |
2319 | this->init_opd(opd_size); | |
2320 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2321 | { | |
2322 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2323 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2324 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2325 | if (val == 0) | |
2326 | // Chances are that this is the third word of an OPD entry. | |
2327 | continue; | |
2328 | typename Exec_sections::const_iterator e | |
2329 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2330 | if (e != exec_sections.begin()) | |
2331 | { | |
2332 | --e; | |
2333 | if (e->start <= val && val < e->start + e->len) | |
2334 | { | |
2335 | // We have an address in an executable section. | |
2336 | // VAL ought to be the function entry, set it up. | |
2337 | this->set_opd_ent(p - opd, e->shndx, val); | |
2338 | // Skip second word of OPD entry, the TOC pointer. | |
2339 | p += 8; | |
2340 | } | |
2341 | } | |
2342 | // If we didn't match any executable sections, we likely | |
2343 | // have a non-zero third word in the OPD entry. | |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | ||
5edad15d AM |
2348 | // Relocate sections. |
2349 | ||
2350 | template<int size, bool big_endian> | |
2351 | void | |
2352 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2353 | const Symbol_table* symtab, const Layout* layout, | |
2354 | const unsigned char* pshdrs, Output_file* of, | |
2355 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2356 | { | |
2357 | unsigned int start = 1; | |
2358 | if (size == 64 | |
2359 | && this->relatoc_ != 0 | |
2360 | && !parameters->options().relocatable()) | |
2361 | { | |
2362 | // Relocate .toc first. | |
2363 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2364 | this->relatoc_, this->relatoc_); | |
2365 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2366 | 1, this->relatoc_ - 1); | |
2367 | start = this->relatoc_ + 1; | |
2368 | } | |
2369 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2370 | start, this->shnum() - 1); | |
2371 | } | |
2372 | ||
f43ba157 | 2373 | // Set up some symbols. |
26a4e9cb AM |
2374 | |
2375 | template<int size, bool big_endian> | |
2376 | void | |
f43ba157 AM |
2377 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2378 | Symbol_table* symtab, | |
2379 | Layout* layout) | |
26a4e9cb AM |
2380 | { |
2381 | if (size == 32) | |
2382 | { | |
bb66a627 AM |
2383 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2384 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2385 | // non-relative dynamic relocs). The proper value will be |
2386 | // updated later. | |
2387 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2388 | if (gotsym != NULL && gotsym->is_undefined()) | |
2389 | { | |
2390 | Target_powerpc<size, big_endian>* target = | |
2391 | static_cast<Target_powerpc<size, big_endian>*>( | |
2392 | parameters->sized_target<size, big_endian>()); | |
2393 | Output_data_got_powerpc<size, big_endian>* got | |
2394 | = target->got_section(symtab, layout); | |
2395 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2396 | Symbol_table::PREDEFINED, | |
2397 | got, 0, 0, | |
2398 | elfcpp::STT_OBJECT, | |
bb66a627 | 2399 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2400 | elfcpp::STV_HIDDEN, 0, |
2401 | false, false); | |
2402 | } | |
2403 | ||
2404 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2405 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2406 | if (sdasym != NULL && sdasym->is_undefined()) | |
2407 | { | |
2408 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2409 | Output_section* os | |
2410 | = layout->add_output_section_data(".sdata", 0, | |
2411 | elfcpp::SHF_ALLOC | |
2412 | | elfcpp::SHF_WRITE, | |
2413 | sdata, ORDER_SMALL_DATA, false); | |
2414 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2415 | Symbol_table::PREDEFINED, | |
2416 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2417 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2418 | 0, false, false); | |
2419 | } | |
2420 | } | |
b4f7960d AM |
2421 | else |
2422 | { | |
2423 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2424 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2425 | if (gotsym != NULL && gotsym->is_undefined()) | |
2426 | { | |
2427 | Target_powerpc<size, big_endian>* target = | |
2428 | static_cast<Target_powerpc<size, big_endian>*>( | |
2429 | parameters->sized_target<size, big_endian>()); | |
2430 | Output_data_got_powerpc<size, big_endian>* got | |
2431 | = target->got_section(symtab, layout); | |
2432 | symtab->define_in_output_data(".TOC.", NULL, | |
2433 | Symbol_table::PREDEFINED, | |
2434 | got, 0x8000, 0, | |
2435 | elfcpp::STT_OBJECT, | |
2436 | elfcpp::STB_LOCAL, | |
2437 | elfcpp::STV_HIDDEN, 0, | |
2438 | false, false); | |
2439 | } | |
2440 | } | |
26a4e9cb AM |
2441 | } |
2442 | ||
cf43a2fe AM |
2443 | // Set up PowerPC target specific relobj. |
2444 | ||
2445 | template<int size, bool big_endian> | |
2446 | Object* | |
2447 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2448 | const std::string& name, | |
2449 | Input_file* input_file, | |
2450 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2451 | { | |
2452 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2453 | // ET_EXEC files are valid input for --just-symbols/-R, |
2454 | // and we treat them as relocatable objects. | |
2455 | if (et == elfcpp::ET_REL | |
2456 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2457 | { |
2458 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2459 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2460 | obj->setup(); |
2461 | return obj; | |
2462 | } | |
2463 | else if (et == elfcpp::ET_DYN) | |
2464 | { | |
dc3714f3 AM |
2465 | Powerpc_dynobj<size, big_endian>* obj = |
2466 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2467 | obj->setup(); |
2468 | return obj; | |
2469 | } | |
2470 | else | |
2471 | { | |
c9269dff | 2472 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2473 | return NULL; |
2474 | } | |
2475 | } | |
2476 | ||
2477 | template<int size, bool big_endian> | |
2478 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2479 | { | |
2480 | public: | |
2481 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2482 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2483 | ||
2484 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2485 | : Output_data_got<size, big_endian>(), | |
2486 | symtab_(symtab), layout_(layout), | |
2487 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2488 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2489 | { |
2490 | if (size == 64) | |
2491 | this->set_addralign(256); | |
2492 | } | |
cf43a2fe | 2493 | |
e84fe78f AM |
2494 | // Override all the Output_data_got methods we use so as to first call |
2495 | // reserve_ent(). | |
2496 | bool | |
2497 | add_global(Symbol* gsym, unsigned int got_type) | |
2498 | { | |
2499 | this->reserve_ent(); | |
2500 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2501 | } | |
2502 | ||
2503 | bool | |
2504 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2505 | { | |
2506 | this->reserve_ent(); | |
2507 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2508 | } | |
2509 | ||
2510 | bool | |
2511 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2512 | { return this->add_global_plt(gsym, got_type); } | |
2513 | ||
2514 | void | |
2515 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2516 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2517 | { | |
2518 | this->reserve_ent(); | |
2519 | Output_data_got<size, big_endian>:: | |
2520 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2521 | } | |
2522 | ||
2523 | void | |
2524 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2525 | Output_data_reloc_generic* rel_dyn, | |
2526 | unsigned int r_type_1, unsigned int r_type_2) | |
2527 | { | |
2528 | this->reserve_ent(2); | |
2529 | Output_data_got<size, big_endian>:: | |
2530 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2531 | } | |
2532 | ||
2533 | bool | |
2534 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2535 | { | |
2536 | this->reserve_ent(); | |
2537 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2538 | got_type); | |
2539 | } | |
2540 | ||
2541 | bool | |
2542 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2543 | { | |
2544 | this->reserve_ent(); | |
2545 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2546 | got_type); | |
2547 | } | |
2548 | ||
2549 | bool | |
2550 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2551 | { return this->add_local_plt(object, sym_index, got_type); } | |
2552 | ||
2553 | void | |
2554 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2555 | unsigned int got_type, | |
2556 | Output_data_reloc_generic* rel_dyn, | |
2557 | unsigned int r_type) | |
2558 | { | |
2559 | this->reserve_ent(2); | |
2560 | Output_data_got<size, big_endian>:: | |
2561 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2562 | } | |
2563 | ||
2564 | unsigned int | |
2565 | add_constant(Valtype constant) | |
2566 | { | |
2567 | this->reserve_ent(); | |
2568 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2569 | } | |
2570 | ||
dd93cd0a AM |
2571 | unsigned int |
2572 | add_constant_pair(Valtype c1, Valtype c2) | |
2573 | { | |
2574 | this->reserve_ent(2); | |
e84fe78f | 2575 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2576 | } |
2577 | ||
2578 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2579 | unsigned int |
2580 | g_o_t() const | |
2581 | { | |
2582 | return this->got_offset(this->header_index_); | |
42cacb20 | 2583 | } |
cf43a2fe | 2584 | |
dd93cd0a AM |
2585 | // Offset of base used to access the GOT/TOC. |
2586 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2587 | Valtype |
dd93cd0a AM |
2588 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2589 | { | |
2590 | if (size == 32) | |
2591 | return this->g_o_t(); | |
2592 | else | |
2593 | return (this->output_section()->address() | |
2594 | + object->toc_base_offset() | |
2595 | - this->address()); | |
2596 | } | |
2597 | ||
cf43a2fe AM |
2598 | // Ensure our GOT has a header. |
2599 | void | |
2600 | set_final_data_size() | |
2601 | { | |
2602 | if (this->header_ent_cnt_ != 0) | |
2603 | this->make_header(); | |
2604 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2605 | } | |
2606 | ||
2607 | // First word of GOT header needs some values that are not | |
2608 | // handled by Output_data_got so poke them in here. | |
2609 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2610 | void | |
2611 | do_write(Output_file* of) | |
2612 | { | |
c9824451 AM |
2613 | Valtype val = 0; |
2614 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2615 | val = this->layout_->dynamic_section()->address(); | |
2616 | if (size == 64) | |
2617 | val = this->output_section()->address() + 0x8000; | |
2618 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2619 | Output_data_got<size, big_endian>::do_write(of); |
2620 | } | |
2621 | ||
2622 | private: | |
2623 | void | |
2624 | reserve_ent(unsigned int cnt = 1) | |
2625 | { | |
2626 | if (this->header_ent_cnt_ == 0) | |
2627 | return; | |
2628 | if (this->num_entries() + cnt > this->header_index_) | |
2629 | this->make_header(); | |
2630 | } | |
2631 | ||
2632 | void | |
2633 | make_header() | |
2634 | { | |
2635 | this->header_ent_cnt_ = 0; | |
2636 | this->header_index_ = this->num_entries(); | |
2637 | if (size == 32) | |
2638 | { | |
2639 | Output_data_got<size, big_endian>::add_constant(0); | |
2640 | Output_data_got<size, big_endian>::add_constant(0); | |
2641 | Output_data_got<size, big_endian>::add_constant(0); | |
2642 | ||
2643 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2644 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2645 | if (gotsym != NULL) | |
2646 | { | |
2647 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2648 | sym->set_value(this->g_o_t()); | |
2649 | } | |
2650 | else | |
2651 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2652 | Symbol_table::PREDEFINED, | |
2653 | this, this->g_o_t(), 0, | |
2654 | elfcpp::STT_OBJECT, | |
2655 | elfcpp::STB_LOCAL, | |
2656 | elfcpp::STV_HIDDEN, 0, | |
2657 | false, false); | |
cf43a2fe AM |
2658 | } |
2659 | else | |
2660 | Output_data_got<size, big_endian>::add_constant(0); | |
2661 | } | |
2662 | ||
2663 | // Stashed pointers. | |
2664 | Symbol_table* symtab_; | |
2665 | Layout* layout_; | |
2666 | ||
2667 | // GOT header size. | |
2668 | unsigned int header_ent_cnt_; | |
2669 | // GOT header index. | |
2670 | unsigned int header_index_; | |
42cacb20 DE |
2671 | }; |
2672 | ||
2673 | // Get the GOT section, creating it if necessary. | |
2674 | ||
2675 | template<int size, bool big_endian> | |
cf43a2fe | 2676 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2677 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2678 | Layout* layout) | |
2679 | { | |
2680 | if (this->got_ == NULL) | |
2681 | { | |
2682 | gold_assert(symtab != NULL && layout != NULL); | |
2683 | ||
cf43a2fe AM |
2684 | this->got_ |
2685 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2686 | |
2687 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2688 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2689 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2690 | } |
2691 | ||
2692 | return this->got_; | |
2693 | } | |
2694 | ||
2695 | // Get the dynamic reloc section, creating it if necessary. | |
2696 | ||
2697 | template<int size, bool big_endian> | |
2698 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2699 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2700 | { | |
2701 | if (this->rela_dyn_ == NULL) | |
2702 | { | |
2703 | gold_assert(layout != NULL); | |
2704 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2705 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2706 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2707 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2708 | } |
2709 | return this->rela_dyn_; | |
2710 | } | |
2711 | ||
b3ccdeb5 AM |
2712 | // Similarly, but for ifunc symbols get the one for ifunc. |
2713 | ||
2714 | template<int size, bool big_endian> | |
2715 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2716 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2717 | Layout* layout, | |
2718 | bool for_ifunc) | |
2719 | { | |
2720 | if (!for_ifunc) | |
2721 | return this->rela_dyn_section(layout); | |
2722 | ||
2723 | if (this->iplt_ == NULL) | |
2724 | this->make_iplt_section(symtab, layout); | |
2725 | return this->iplt_->rel_plt(); | |
2726 | } | |
2727 | ||
ec661b9d AM |
2728 | class Stub_control |
2729 | { | |
2730 | public: | |
2731 | // Determine the stub group size. The group size is the absolute | |
2732 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 2733 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 2734 | // the stubbed branches. |
1c3a5fbe AM |
2735 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
2736 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
2737 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
2738 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
2739 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 2740 | { |
ec661b9d AM |
2741 | } |
2742 | ||
2743 | // Return true iff input section can be handled by current stub | |
2744 | // group. | |
2745 | bool | |
2746 | can_add_to_stub_group(Output_section* o, | |
2747 | const Output_section::Input_section* i, | |
2748 | bool has14); | |
2749 | ||
2750 | const Output_section::Input_section* | |
2751 | owner() | |
2752 | { return owner_; } | |
2753 | ||
2754 | Output_section* | |
2755 | output_section() | |
2756 | { return output_section_; } | |
2757 | ||
a20605cf AM |
2758 | void |
2759 | set_output_and_owner(Output_section* o, | |
2760 | const Output_section::Input_section* i) | |
2761 | { | |
2762 | this->output_section_ = o; | |
2763 | this->owner_ = i; | |
2764 | } | |
2765 | ||
ec661b9d AM |
2766 | private: |
2767 | typedef enum | |
2768 | { | |
1c3a5fbe | 2769 | // Initial state. |
ec661b9d | 2770 | NO_GROUP, |
1c3a5fbe | 2771 | // Adding group sections before the stubs. |
ec661b9d | 2772 | FINDING_STUB_SECTION, |
1c3a5fbe | 2773 | // Adding group sections after the stubs. |
ec661b9d AM |
2774 | HAS_STUB_SECTION |
2775 | } State; | |
2776 | ||
ec661b9d | 2777 | uint32_t stub_group_size_; |
a5018ae5 | 2778 | bool stubs_always_after_branch_; |
ec661b9d | 2779 | bool suppress_size_errors_; |
1c3a5fbe AM |
2780 | // True if a stub group can serve multiple output sections. |
2781 | bool multi_os_; | |
2782 | State state_; | |
8a37735f AM |
2783 | // Current max size of group. Starts at stub_group_size_ but is |
2784 | // reduced to stub_group_size_/1024 on seeing a section with | |
2785 | // external conditional branches. | |
2786 | uint32_t group_size_; | |
a5018ae5 | 2787 | uint64_t group_start_addr_; |
57f6d32d AM |
2788 | // owner_ and output_section_ specify the section to which stubs are |
2789 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
2790 | const Output_section::Input_section* owner_; |
2791 | Output_section* output_section_; | |
2792 | }; | |
2793 | ||
0cfdc767 | 2794 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
2795 | // group. Sections are presented to this function in order, |
2796 | // so the first section is the head of the group. | |
ec661b9d AM |
2797 | |
2798 | bool | |
2799 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2800 | const Output_section::Input_section* i, | |
2801 | bool has14) | |
2802 | { | |
ec661b9d AM |
2803 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
2804 | uint64_t this_size; | |
2805 | uint64_t start_addr = o->address(); | |
2806 | ||
2807 | if (whole_sec) | |
2808 | // .init and .fini sections are pasted together to form a single | |
2809 | // function. We can't be adding stubs in the middle of the function. | |
2810 | this_size = o->data_size(); | |
2811 | else | |
2812 | { | |
2813 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
2814 | this_size = i->data_size(); | |
2815 | } | |
57f6d32d | 2816 | |
a5018ae5 | 2817 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
2818 | uint32_t group_size = this->stub_group_size_; |
2819 | if (has14) | |
2820 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 2821 | |
57f6d32d | 2822 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
2823 | gold_warning(_("%s:%s exceeds group size"), |
2824 | i->relobj()->name().c_str(), | |
2825 | i->relobj()->section_name(i->shndx()).c_str()); | |
2826 | ||
afe002dd AM |
2827 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
2828 | has14 ? " 14bit" : "", | |
2829 | i->relobj()->name().c_str(), | |
2830 | i->relobj()->section_name(i->shndx()).c_str(), | |
2831 | (long long) this_size, | |
a5018ae5 AM |
2832 | (this->state_ == NO_GROUP |
2833 | ? this_size | |
2834 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 2835 | |
1c3a5fbe AM |
2836 | if (this->state_ == NO_GROUP) |
2837 | { | |
2838 | // Only here on very first use of Stub_control | |
2839 | this->owner_ = i; | |
2840 | this->output_section_ = o; | |
2841 | this->state_ = FINDING_STUB_SECTION; | |
2842 | this->group_size_ = group_size; | |
2843 | this->group_start_addr_ = start_addr; | |
2844 | return true; | |
2845 | } | |
2846 | else if (!this->multi_os_ && this->output_section_ != o) | |
2847 | ; | |
2848 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 2849 | { |
a5018ae5 | 2850 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 2851 | // group? |
a5018ae5 | 2852 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 2853 | return true; |
ec661b9d | 2854 | } |
a5018ae5 | 2855 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 2856 | { |
a5018ae5 AM |
2857 | if ((whole_sec && this->output_section_ == o) |
2858 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2859 | { |
a5018ae5 | 2860 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
2861 | this->owner_ = i; |
2862 | this->output_section_ = o; | |
a5018ae5 | 2863 | return true; |
57f6d32d | 2864 | } |
a5018ae5 AM |
2865 | // The group before the stubs has reached maximum size. |
2866 | // Now see about adding sections after the stubs to the | |
2867 | // group. If the current section has a 14-bit branch and | |
2868 | // the group before the stubs exceeds group_size_ (because | |
2869 | // they didn't have 14-bit branches), don't add sections | |
2870 | // after the stubs: The size of stubs for such a large | |
2871 | // group may exceed the reach of a 14-bit branch. | |
2872 | if (!this->stubs_always_after_branch_ | |
2873 | && this_size <= this->group_size_ | |
2874 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2875 | { |
a5018ae5 AM |
2876 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
2877 | this->state_ = HAS_STUB_SECTION; | |
2878 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
2879 | return true; |
2880 | } | |
ec661b9d | 2881 | } |
a5018ae5 AM |
2882 | else |
2883 | gold_unreachable(); | |
57f6d32d | 2884 | |
1c3a5fbe AM |
2885 | gold_debug(DEBUG_TARGET, |
2886 | !this->multi_os_ && this->output_section_ != o | |
2887 | ? "nope, new output section\n" | |
2888 | : "nope, didn't fit\n"); | |
afe002dd | 2889 | |
57f6d32d AM |
2890 | // The section fails to fit in the current group. Set up a few |
2891 | // things for the next group. owner_ and output_section_ will be | |
2892 | // set later after we've retrieved those values for the current | |
2893 | // group. | |
2894 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 2895 | this->group_size_ = group_size; |
a5018ae5 | 2896 | this->group_start_addr_ = start_addr; |
57f6d32d | 2897 | return false; |
ec661b9d AM |
2898 | } |
2899 | ||
2900 | // Look over all the input sections, deciding where to place stubs. | |
2901 | ||
2902 | template<int size, bool big_endian> | |
2903 | void | |
2904 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
2905 | const Task*, |
2906 | bool no_size_errors) | |
ec661b9d | 2907 | { |
1c3a5fbe AM |
2908 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
2909 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
2910 | |
2911 | // Group input sections and insert stub table | |
a3e60ddb AM |
2912 | Stub_table_owner* table_owner = NULL; |
2913 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
2914 | Layout::Section_list section_list; |
2915 | layout->get_executable_sections(§ion_list); | |
2916 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
2917 | for (Layout::Section_list::iterator o = section_list.begin(); |
2918 | o != section_list.end(); | |
ec661b9d AM |
2919 | ++o) |
2920 | { | |
2921 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
2922 | for (Input_section_list::const_iterator i |
2923 | = (*o)->input_sections().begin(); | |
2924 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
2925 | ++i) |
2926 | { | |
a3e60ddb AM |
2927 | if (i->is_input_section() |
2928 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
2929 | { |
2930 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
2931 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
2932 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
2933 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
2934 | { | |
a3e60ddb AM |
2935 | table_owner->output_section = stub_control.output_section(); |
2936 | table_owner->owner = stub_control.owner(); | |
a20605cf | 2937 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 2938 | table_owner = NULL; |
ec661b9d | 2939 | } |
a3e60ddb AM |
2940 | if (table_owner == NULL) |
2941 | { | |
2942 | table_owner = new Stub_table_owner; | |
2943 | tables.push_back(table_owner); | |
2944 | } | |
2945 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
2946 | } |
2947 | } | |
2948 | } | |
a3e60ddb | 2949 | if (table_owner != NULL) |
0cfdc767 | 2950 | { |
a5018ae5 AM |
2951 | table_owner->output_section = stub_control.output_section(); |
2952 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
2953 | } |
2954 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
2955 | t != tables.end(); | |
2956 | ++t) | |
2957 | { | |
2958 | Stub_table<size, big_endian>* stub_table; | |
2959 | ||
2960 | if ((*t)->owner->is_input_section()) | |
2961 | stub_table = new Stub_table<size, big_endian>(this, | |
2962 | (*t)->output_section, | |
590b87ff AM |
2963 | (*t)->owner, |
2964 | this->stub_tables_.size()); | |
a3e60ddb AM |
2965 | else if ((*t)->owner->is_relaxed_input_section()) |
2966 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
2967 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 2968 | else |
a3e60ddb AM |
2969 | gold_unreachable(); |
2970 | this->stub_tables_.push_back(stub_table); | |
2971 | delete *t; | |
0cfdc767 | 2972 | } |
ec661b9d AM |
2973 | } |
2974 | ||
a3e60ddb AM |
2975 | static unsigned long |
2976 | max_branch_delta (unsigned int r_type) | |
2977 | { | |
2978 | if (r_type == elfcpp::R_POWERPC_REL14 | |
2979 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
2980 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
2981 | return 1L << 15; | |
2982 | if (r_type == elfcpp::R_POWERPC_REL24 | |
2983 | || r_type == elfcpp::R_PPC_PLTREL24 | |
2984 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
2985 | return 1L << 25; | |
2986 | return 0; | |
2987 | } | |
2988 | ||
7e57d19e AM |
2989 | // Return whether this branch is going via a plt call stub. |
2990 | ||
2991 | template<int size, bool big_endian> | |
2992 | bool | |
2993 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
2994 | Powerpc_relobj<size, big_endian>* ppc_object, | |
2995 | unsigned int shndx, | |
2996 | Address offset, | |
2997 | Target_powerpc* target, | |
2998 | Symbol_table* symtab) | |
2999 | { | |
3000 | if (this->object_ != ppc_object | |
3001 | || this->shndx_ != shndx | |
3002 | || this->offset_ != offset) | |
3003 | return false; | |
3004 | ||
3005 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3006 | if (sym != NULL && sym->is_forwarder()) | |
3007 | sym = symtab->resolve_forwards(sym); | |
3008 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); | |
3009 | if (gsym != NULL | |
7ee7ff70 AM |
3010 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3011 | && !target->is_elfv2_localentry0(gsym)) | |
3012 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3013 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3014 | { |
3015 | this->tocsave_ = 1; | |
3016 | return true; | |
3017 | } | |
3018 | return false; | |
3019 | } | |
3020 | ||
ec661b9d AM |
3021 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3022 | ||
3023 | template<int size, bool big_endian> | |
a3e60ddb | 3024 | bool |
ec661b9d AM |
3025 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3026 | Stub_table<size, big_endian>* stub_table, | |
3027 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3028 | Symbol_table* symtab) const | |
3029 | { | |
3030 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3031 | if (sym != NULL && sym->is_forwarder()) | |
3032 | sym = symtab->resolve_forwards(sym); | |
3033 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); | |
88b8e639 AM |
3034 | Target_powerpc<size, big_endian>* target = |
3035 | static_cast<Target_powerpc<size, big_endian>*>( | |
3036 | parameters->sized_target<size, big_endian>()); | |
dc60b26d AM |
3037 | bool ok = true; |
3038 | ||
ec661b9d | 3039 | if (gsym != NULL |
88b8e639 | 3040 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3041 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3042 | { | |
9055360d AM |
3043 | if (size == 64 |
3044 | && gsym != NULL | |
3045 | && target->abiversion() >= 2 | |
3046 | && !parameters->options().output_is_position_independent() | |
3047 | && !is_branch_reloc(this->r_type_)) | |
3048 | target->glink_section()->add_global_entry(gsym); | |
3049 | else | |
ec661b9d | 3050 | { |
9055360d AM |
3051 | if (stub_table == NULL) |
3052 | stub_table = this->object_->stub_table(this->shndx_); | |
3053 | if (stub_table == NULL) | |
3054 | { | |
3055 | // This is a ref from a data section to an ifunc symbol. | |
3056 | stub_table = ifunc_stub_table; | |
3057 | } | |
3058 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3059 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3060 | if (from != invalid_address) | |
3061 | from += (this->object_->output_section(this->shndx_)->address() | |
3062 | + this->offset_); | |
9055360d | 3063 | if (gsym != NULL) |
dc60b26d AM |
3064 | ok = stub_table->add_plt_call_entry(from, |
3065 | this->object_, gsym, | |
7e57d19e AM |
3066 | this->r_type_, this->addend_, |
3067 | this->tocsave_); | |
9055360d | 3068 | else |
dc60b26d AM |
3069 | ok = stub_table->add_plt_call_entry(from, |
3070 | this->object_, this->r_sym_, | |
7e57d19e AM |
3071 | this->r_type_, this->addend_, |
3072 | this->tocsave_); | |
ec661b9d | 3073 | } |
ec661b9d AM |
3074 | } |
3075 | else | |
3076 | { | |
cbcb23fa | 3077 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
3078 | if (max_branch_offset == 0) |
3079 | return true; | |
ec661b9d AM |
3080 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3081 | gold_assert(from != invalid_address); | |
3082 | from += (this->object_->output_section(this->shndx_)->address() | |
3083 | + this->offset_); | |
3084 | Address to; | |
3085 | if (gsym != NULL) | |
3086 | { | |
3087 | switch (gsym->source()) | |
3088 | { | |
3089 | case Symbol::FROM_OBJECT: | |
3090 | { | |
3091 | Object* symobj = gsym->object(); | |
3092 | if (symobj->is_dynamic() | |
3093 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3094 | return true; |
ec661b9d AM |
3095 | bool is_ordinary; |
3096 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3097 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3098 | return true; |
ec661b9d AM |
3099 | } |
3100 | break; | |
3101 | ||
3102 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3103 | return true; |
ec661b9d AM |
3104 | |
3105 | default: | |
3106 | break; | |
3107 | } | |
3108 | Symbol_table::Compute_final_value_status status; | |
3109 | to = symtab->compute_final_value<size>(gsym, &status); | |
3110 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3111 | return true; |
9055360d AM |
3112 | if (size == 64) |
3113 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
3114 | } |
3115 | else | |
3116 | { | |
3117 | const Symbol_value<size>* psymval | |
3118 | = this->object_->local_symbol(this->r_sym_); | |
3119 | Symbol_value<size> symval; | |
0f125432 CC |
3120 | if (psymval->is_section_symbol()) |
3121 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3122 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3123 | typename ObjType::Compute_final_local_value_status status | |
3124 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3125 | &symval, symtab); | |
3126 | if (status != ObjType::CFLV_OK | |
3127 | || !symval.has_output_value()) | |
a3e60ddb | 3128 | return true; |
ec661b9d | 3129 | to = symval.value(this->object_, 0); |
9055360d AM |
3130 | if (size == 64) |
3131 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 3132 | } |
cbcb23fa AM |
3133 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3134 | to += this->addend_; | |
ec661b9d AM |
3135 | if (stub_table == NULL) |
3136 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3137 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3138 | { |
3139 | unsigned int dest_shndx; | |
1611bc4a AM |
3140 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3141 | &to, &dest_shndx)) | |
3142 | return true; | |
ec661b9d AM |
3143 | } |
3144 | Address delta = to - from; | |
3145 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
3146 | { | |
0cfdc767 AM |
3147 | if (stub_table == NULL) |
3148 | { | |
3149 | gold_warning(_("%s:%s: branch in non-executable section," | |
3150 | " no long branch stub for you"), | |
3151 | this->object_->name().c_str(), | |
3152 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3153 | return true; |
0cfdc767 | 3154 | } |
d49044c7 AM |
3155 | bool save_res = (size == 64 |
3156 | && gsym != NULL | |
3157 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3158 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3159 | ok = stub_table->add_long_branch_entry(this->object_, |
3160 | this->r_type_, | |
3161 | from, to, save_res); | |
ec661b9d AM |
3162 | } |
3163 | } | |
dc60b26d AM |
3164 | if (!ok) |
3165 | gold_debug(DEBUG_TARGET, | |
3166 | "branch at %s:%s+%#lx\n" | |
3167 | "can't reach stub attached to %s:%s", | |
3168 | this->object_->name().c_str(), | |
3169 | this->object_->section_name(this->shndx_).c_str(), | |
3170 | (unsigned long) this->offset_, | |
3171 | stub_table->relobj()->name().c_str(), | |
3172 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3173 | ||
3174 | return ok; | |
ec661b9d AM |
3175 | } |
3176 | ||
3177 | // Relaxation hook. This is where we do stub generation. | |
3178 | ||
3179 | template<int size, bool big_endian> | |
3180 | bool | |
3181 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3182 | const Input_objects*, | |
3183 | Symbol_table* symtab, | |
3184 | Layout* layout, | |
3185 | const Task* task) | |
3186 | { | |
3187 | unsigned int prev_brlt_size = 0; | |
3188 | if (pass == 1) | |
ec661b9d | 3189 | { |
b4f7960d AM |
3190 | bool thread_safe |
3191 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3192 | if (size == 64 | |
3193 | && this->abiversion() < 2 | |
3194 | && !thread_safe | |
3195 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3196 | { |
e2458743 | 3197 | static const char* const thread_starter[] = |
9e69ed50 AM |
3198 | { |
3199 | "pthread_create", | |
3200 | /* libstdc++ */ | |
3201 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3202 | /* librt */ | |
3203 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3204 | "mq_notify", "create_timer", | |
3205 | /* libanl */ | |
3206 | "getaddrinfo_a", | |
3207 | /* libgomp */ | |
80272b8c | 3208 | "GOMP_parallel", |
9e69ed50 | 3209 | "GOMP_parallel_start", |
80272b8c | 3210 | "GOMP_parallel_loop_static", |
9e69ed50 | 3211 | "GOMP_parallel_loop_static_start", |
80272b8c | 3212 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3213 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3214 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3215 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3216 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3217 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3218 | "GOMP_parallel_sections", |
43819297 | 3219 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3220 | /* libgo */ |
3221 | "__go_go", | |
9e69ed50 AM |
3222 | }; |
3223 | ||
e2458743 AM |
3224 | if (parameters->options().shared()) |
3225 | thread_safe = true; | |
3226 | else | |
9e69ed50 | 3227 | { |
e2458743 AM |
3228 | for (unsigned int i = 0; |
3229 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3230 | i++) | |
3231 | { | |
3232 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3233 | thread_safe = (sym != NULL | |
3234 | && sym->in_reg() | |
3235 | && sym->in_real_elf()); | |
3236 | if (thread_safe) | |
3237 | break; | |
3238 | } | |
9e69ed50 | 3239 | } |
ec661b9d | 3240 | } |
9e69ed50 | 3241 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3242 | } |
3243 | ||
3244 | if (pass == 1) | |
3245 | { | |
3246 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3247 | bool no_size_errors = true; | |
3248 | if (this->stub_group_size_ == 1) | |
3249 | this->stub_group_size_ = 0x1c00000; | |
3250 | else if (this->stub_group_size_ == -1) | |
3251 | this->stub_group_size_ = -0x1e00000; | |
3252 | else | |
3253 | no_size_errors = false; | |
3254 | this->group_sections(layout, task, no_size_errors); | |
3255 | } | |
3256 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3257 | { | |
3258 | this->branch_lookup_table_.clear(); | |
3259 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3260 | p != this->stub_tables_.end(); | |
3261 | ++p) | |
3262 | { | |
3263 | (*p)->clear_stubs(true); | |
3264 | } | |
3265 | this->stub_tables_.clear(); | |
3266 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3267 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3268 | program_name, this->stub_group_size_); |
3269 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3270 | } |
3271 | ||
3272 | // We need address of stub tables valid for make_stub. | |
3273 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3274 | p != this->stub_tables_.end(); | |
3275 | ++p) | |
3276 | { | |
3277 | const Powerpc_relobj<size, big_endian>* object | |
3278 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3279 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3280 | gold_assert(off != invalid_address); | |
3281 | Output_section* os = (*p)->output_section(); | |
3282 | (*p)->set_address_and_size(os, off); | |
3283 | } | |
3284 | ||
9e69ed50 AM |
3285 | if (pass != 1) |
3286 | { | |
3287 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3288 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3289 | this->branch_lookup_table_.clear(); | |
3290 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3291 | p != this->stub_tables_.end(); | |
3292 | ++p) | |
3293 | { | |
a3e60ddb | 3294 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3295 | } |
3296 | } | |
3297 | ||
3298 | // Build all the stubs. | |
a3e60ddb | 3299 | this->relax_failed_ = false; |
ec661b9d AM |
3300 | Stub_table<size, big_endian>* ifunc_stub_table |
3301 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3302 | Stub_table<size, big_endian>* one_stub_table | |
3303 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3304 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3305 | b != this->branch_info_.end(); | |
3306 | b++) | |
3307 | { | |
a3e60ddb AM |
3308 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3309 | && !this->relax_failed_) | |
3310 | { | |
3311 | this->relax_failed_ = true; | |
3312 | this->relax_fail_count_++; | |
3313 | if (this->relax_fail_count_ < 3) | |
3314 | return true; | |
3315 | } | |
ec661b9d AM |
3316 | } |
3317 | ||
9e69ed50 | 3318 | // Did anything change size? |
ec661b9d AM |
3319 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3320 | bool again = num_huge_branches != prev_brlt_size; | |
3321 | if (size == 64 && num_huge_branches != 0) | |
3322 | this->make_brlt_section(layout); | |
3323 | if (size == 64 && again) | |
3324 | this->brlt_section_->set_current_size(num_huge_branches); | |
3325 | ||
3326 | typedef Unordered_set<Output_section*> Output_sections; | |
3327 | Output_sections os_need_update; | |
3328 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3329 | p != this->stub_tables_.end(); | |
3330 | ++p) | |
3331 | { | |
3332 | if ((*p)->size_update()) | |
3333 | { | |
3334 | again = true; | |
9d5781f8 | 3335 | (*p)->add_eh_frame(layout); |
ec661b9d AM |
3336 | os_need_update.insert((*p)->output_section()); |
3337 | } | |
3338 | } | |
3339 | ||
9e69ed50 AM |
3340 | // Set output section offsets for all input sections in an output |
3341 | // section that just changed size. Anything past the stubs will | |
3342 | // need updating. | |
ec661b9d AM |
3343 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3344 | p != os_need_update.end(); | |
3345 | p++) | |
3346 | { | |
3347 | Output_section* os = *p; | |
3348 | Address off = 0; | |
3349 | typedef Output_section::Input_section_list Input_section_list; | |
3350 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3351 | i != os->input_sections().end(); | |
3352 | ++i) | |
3353 | { | |
3354 | off = align_address(off, i->addralign()); | |
3355 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3356 | i->relobj()->set_section_offset(i->shndx(), off); | |
3357 | if (i->is_relaxed_input_section()) | |
3358 | { | |
3359 | Stub_table<size, big_endian>* stub_table | |
3360 | = static_cast<Stub_table<size, big_endian>*>( | |
3361 | i->relaxed_input_section()); | |
6395d38b HS |
3362 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3363 | off += stub_table_size; | |
3364 | // After a few iterations, set current stub table size | |
3365 | // as min size threshold, so later stub tables can only | |
3366 | // grow in size. | |
3367 | if (pass >= 4) | |
3368 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3369 | } |
3370 | else | |
3371 | off += i->data_size(); | |
3372 | } | |
6830ee24 AM |
3373 | // If .branch_lt is part of this output section, then we have |
3374 | // just done the offset adjustment. | |
ec661b9d AM |
3375 | os->clear_section_offsets_need_adjustment(); |
3376 | } | |
3377 | ||
3378 | if (size == 64 | |
3379 | && !again | |
3380 | && num_huge_branches != 0 | |
3381 | && parameters->options().output_is_position_independent()) | |
3382 | { | |
3383 | // Fill in the BRLT relocs. | |
06f30c9d | 3384 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3385 | for (typename Branch_lookup_table::const_iterator p |
3386 | = this->branch_lookup_table_.begin(); | |
3387 | p != this->branch_lookup_table_.end(); | |
3388 | ++p) | |
3389 | { | |
3390 | this->brlt_section_->add_reloc(p->first, p->second); | |
3391 | } | |
06f30c9d | 3392 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3393 | } |
590b87ff AM |
3394 | |
3395 | if (!again | |
3396 | && (parameters->options().user_set_emit_stub_syms() | |
3397 | ? parameters->options().emit_stub_syms() | |
3398 | : (size == 64 | |
3399 | || parameters->options().output_is_position_independent() | |
3400 | || parameters->options().emit_relocs()))) | |
3401 | { | |
3402 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3403 | p != this->stub_tables_.end(); | |
3404 | ++p) | |
3405 | (*p)->define_stub_syms(symtab); | |
3406 | ||
3407 | if (this->glink_ != NULL) | |
3408 | { | |
3409 | int stub_size = this->glink_->pltresolve_size; | |
3410 | Address value = -stub_size; | |
3411 | if (size == 64) | |
3412 | { | |
3413 | value = 8; | |
3414 | stub_size -= 8; | |
3415 | } | |
3416 | this->define_local(symtab, "__glink_PLTresolve", | |
3417 | this->glink_, value, stub_size); | |
3418 | ||
3419 | if (size != 64) | |
3420 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3421 | } | |
3422 | } | |
3423 | ||
ec661b9d AM |
3424 | return again; |
3425 | } | |
3426 | ||
9d5781f8 AM |
3427 | template<int size, bool big_endian> |
3428 | void | |
3429 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3430 | unsigned char* oview, | |
3431 | uint64_t* paddress, | |
3432 | off_t* plen) const | |
3433 | { | |
3434 | uint64_t address = plt->address(); | |
3435 | off_t len = plt->data_size(); | |
3436 | ||
3437 | if (plt == this->glink_) | |
3438 | { | |
3439 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3440 | if (len == 0) |
3441 | { | |
3442 | gold_assert(parameters->doing_static_link()); | |
3443 | // Static linking may need stubs, to support ifunc and long | |
3444 | // branches. We need to create an output section for | |
3445 | // .eh_frame early in the link process, to have a place to | |
3446 | // attach stub .eh_frame info. We also need to have | |
3447 | // registered a CIE that matches the stub CIE. Both of | |
3448 | // these requirements are satisfied by creating an FDE and | |
3449 | // CIE for .glink, even though static linking will leave | |
3450 | // .glink zero length. | |
3451 | // ??? Hopefully generating an FDE with a zero address range | |
3452 | // won't confuse anything that consumes .eh_frame info. | |
3453 | } | |
3454 | else if (size == 64) | |
9d5781f8 AM |
3455 | { |
3456 | // There is one word before __glink_PLTresolve | |
3457 | address += 8; | |
3458 | len -= 8; | |
3459 | } | |
3460 | else if (parameters->options().output_is_position_independent()) | |
3461 | { | |
3462 | // There are two FDEs for a position independent glink. | |
3463 | // The first covers the branch table, the second | |
3464 | // __glink_PLTresolve at the end of glink. | |
3465 | off_t resolve_size = this->glink_->pltresolve_size; | |
5fe7ffdc | 3466 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3467 | len -= resolve_size; |
3468 | else | |
3469 | { | |
3470 | address += len - resolve_size; | |
3471 | len = resolve_size; | |
3472 | } | |
3473 | } | |
3474 | } | |
3475 | else | |
3476 | { | |
3477 | // Must be a stub table. | |
3478 | const Stub_table<size, big_endian>* stub_table | |
3479 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3480 | uint64_t stub_address = stub_table->stub_address(); | |
3481 | len -= stub_address - address; | |
3482 | address = stub_address; | |
3483 | } | |
3484 | ||
3485 | *paddress = address; | |
3486 | *plen = len; | |
3487 | } | |
3488 | ||
42cacb20 DE |
3489 | // A class to handle the PLT data. |
3490 | ||
3491 | template<int size, bool big_endian> | |
cf43a2fe | 3492 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3493 | { |
3494 | public: | |
3495 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3496 | size, big_endian> Reloc_section; | |
3497 | ||
e5d5f5ed AM |
3498 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3499 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3500 | const char* name) |
3501 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3502 | rel_(plt_rel), | |
3503 | targ_(targ), | |
e5d5f5ed AM |
3504 | name_(name) |
3505 | { } | |
42cacb20 DE |
3506 | |
3507 | // Add an entry to the PLT. | |
03e25981 | 3508 | void |
cf43a2fe | 3509 | add_entry(Symbol*); |
42cacb20 | 3510 | |
03e25981 | 3511 | void |
e5d5f5ed AM |
3512 | add_ifunc_entry(Symbol*); |
3513 | ||
03e25981 | 3514 | void |
e5d5f5ed AM |
3515 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3516 | ||
42cacb20 | 3517 | // Return the .rela.plt section data. |
e5d5f5ed | 3518 | Reloc_section* |
cf43a2fe AM |
3519 | rel_plt() const |
3520 | { | |
42cacb20 DE |
3521 | return this->rel_; |
3522 | } | |
3523 | ||
0e70b911 CC |
3524 | // Return the number of PLT entries. |
3525 | unsigned int | |
3526 | entry_count() const | |
d83ce4e3 | 3527 | { |
b3ccdeb5 AM |
3528 | if (this->current_data_size() == 0) |
3529 | return 0; | |
b4f7960d AM |
3530 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3531 | / this->plt_entry_size()); | |
d83ce4e3 | 3532 | } |
0e70b911 | 3533 | |
42cacb20 | 3534 | protected: |
42cacb20 | 3535 | void |
cf43a2fe | 3536 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3537 | { |
cf43a2fe | 3538 | os->set_entsize(0); |
42cacb20 DE |
3539 | } |
3540 | ||
6ce78956 AM |
3541 | // Write to a map file. |
3542 | void | |
3543 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3544 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3545 | |
cf43a2fe | 3546 | private: |
b4f7960d AM |
3547 | // Return the offset of the first non-reserved PLT entry. |
3548 | unsigned int | |
3549 | first_plt_entry_offset() const | |
3550 | { | |
3551 | // IPLT has no reserved entry. | |
3552 | if (this->name_[3] == 'I') | |
3553 | return 0; | |
3554 | return this->targ_->first_plt_entry_offset(); | |
3555 | } | |
3556 | ||
3557 | // Return the size of each PLT entry. | |
3558 | unsigned int | |
3559 | plt_entry_size() const | |
3560 | { | |
3561 | return this->targ_->plt_entry_size(); | |
3562 | } | |
cf43a2fe | 3563 | |
42cacb20 DE |
3564 | // Write out the PLT data. |
3565 | void | |
3566 | do_write(Output_file*); | |
3567 | ||
3568 | // The reloc section. | |
3569 | Reloc_section* rel_; | |
cf43a2fe AM |
3570 | // Allows access to .glink for do_write. |
3571 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3572 | // What to report in map file. |
3573 | const char *name_; | |
42cacb20 DE |
3574 | }; |
3575 | ||
e5d5f5ed | 3576 | // Add an entry to the PLT. |
42cacb20 DE |
3577 | |
3578 | template<int size, bool big_endian> | |
03e25981 | 3579 | void |
e5d5f5ed | 3580 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3581 | { |
e5d5f5ed AM |
3582 | if (!gsym->has_plt_offset()) |
3583 | { | |
ec661b9d | 3584 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3585 | if (off == 0) |
3586 | off += this->first_plt_entry_offset(); | |
3587 | gsym->set_plt_offset(off); | |
3588 | gsym->set_needs_dynsym_entry(); | |
3589 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3590 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3591 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3592 | this->set_current_data_size(off); |
3593 | } | |
42cacb20 DE |
3594 | } |
3595 | ||
e5d5f5ed | 3596 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3597 | |
3598 | template<int size, bool big_endian> | |
03e25981 | 3599 | void |
e5d5f5ed | 3600 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3601 | { |
cf43a2fe AM |
3602 | if (!gsym->has_plt_offset()) |
3603 | { | |
ec661b9d | 3604 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3605 | gsym->set_plt_offset(off); |
e5d5f5ed | 3606 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3607 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3608 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3609 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3610 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3611 | this->set_current_data_size(off); |
3612 | } | |
3613 | } | |
3614 | ||
3615 | // Add an entry for a local ifunc symbol to the IPLT. | |
3616 | ||
3617 | template<int size, bool big_endian> | |
03e25981 | 3618 | void |
e5d5f5ed AM |
3619 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3620 | Sized_relobj_file<size, big_endian>* relobj, | |
3621 | unsigned int local_sym_index) | |
3622 | { | |
3623 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3624 | { | |
ec661b9d | 3625 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3626 | relobj->set_local_plt_offset(local_sym_index, off); |
3627 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3628 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3629 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3630 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3631 | this, off, 0); | |
b4f7960d | 3632 | off += this->plt_entry_size(); |
cf43a2fe AM |
3633 | this->set_current_data_size(off); |
3634 | } | |
42cacb20 DE |
3635 | } |
3636 | ||
dd93cd0a | 3637 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3638 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 3639 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
3640 | static const uint32_t add_3_3_2 = 0x7c631214; |
3641 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
3642 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
b4f7960d AM |
3643 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3644 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3645 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3646 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3647 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3648 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3649 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3650 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3651 | static const uint32_t addis_0_2 = 0x3c020000; |
3652 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3653 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3654 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3655 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3656 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3657 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3658 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3659 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3660 | static const uint32_t b = 0x48000000; |
3661 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3662 | static const uint32_t bctr = 0x4e800420; | |
f3a0ed29 | 3663 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3664 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3665 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3666 | static const uint32_t cmpldi_2_0 = 0x28220000; |
dd93cd0a AM |
3667 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3668 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
3669 | static const uint32_t ld_0_1 = 0xe8010000; |
3670 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3671 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3672 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 3673 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 3674 | static const uint32_t ld_2_12 = 0xe84c0000; |
b4f7960d AM |
3675 | static const uint32_t ld_11_2 = 0xe9620000; |
3676 | static const uint32_t ld_11_11 = 0xe96b0000; | |
3677 | static const uint32_t ld_12_2 = 0xe9820000; | |
3678 | static const uint32_t ld_12_11 = 0xe98b0000; | |
9055360d | 3679 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3680 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3681 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3682 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3683 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 3684 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
3685 | static const uint32_t lis_11 = 0x3d600000; |
3686 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3687 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff AM |
3688 | static const uint32_t lwz_0_12 = 0x800c0000; |
3689 | static const uint32_t lwz_11_11 = 0x816b0000; | |
3690 | static const uint32_t lwz_11_30 = 0x817e0000; | |
3691 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 3692 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3693 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3694 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
3695 | static const uint32_t mflr_12 = 0x7d8802a6; |
3696 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
3697 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3698 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3699 | static const uint32_t mtlr_0 = 0x7c0803a6; |
c9269dff | 3700 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3701 | static const uint32_t nop = 0x60000000; |
c9269dff | 3702 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3703 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3704 | static const uint32_t std_0_1 = 0xf8010000; |
3705 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3706 | static const uint32_t std_2_1 = 0xf8410000; |
f3a0ed29 AM |
3707 | static const uint32_t stfd_0_1 = 0xd8010000; |
3708 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3709 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3710 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3711 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3712 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3713 | |
3714 | // Write out the PLT. | |
3715 | ||
3716 | template<int size, bool big_endian> | |
3717 | void | |
3718 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3719 | { | |
b3ccdeb5 | 3720 | if (size == 32 && this->name_[3] != 'I') |
cf43a2fe | 3721 | { |
ec661b9d | 3722 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3723 | const section_size_type oview_size |
3724 | = convert_to_section_size_type(this->data_size()); | |
3725 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3726 | unsigned char* pov = oview; | |
3727 | unsigned char* endpov = oview + oview_size; | |
3728 | ||
e5d5f5ed | 3729 | // The address of the .glink branch table |
cf43a2fe AM |
3730 | const Output_data_glink<size, big_endian>* glink |
3731 | = this->targ_->glink_section(); | |
ec661b9d | 3732 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3733 | |
3734 | while (pov < endpov) | |
3735 | { | |
3736 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3737 | pov += 4; | |
3738 | branch_tab += 4; | |
3739 | } | |
3740 | ||
3741 | of->write_output_view(offset, oview_size, oview); | |
3742 | } | |
3743 | } | |
3744 | ||
3745 | // Create the PLT section. | |
3746 | ||
3747 | template<int size, bool big_endian> | |
3748 | void | |
40b469d7 AM |
3749 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
3750 | Layout* layout) | |
cf43a2fe AM |
3751 | { |
3752 | if (this->plt_ == NULL) | |
3753 | { | |
40b469d7 AM |
3754 | if (this->got_ == NULL) |
3755 | this->got_section(symtab, layout); | |
3756 | ||
cf43a2fe AM |
3757 | if (this->glink_ == NULL) |
3758 | make_glink_section(layout); | |
3759 | ||
3760 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
3761 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 3762 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
3763 | this->rela_dyn_section(layout); |
3764 | ||
e5d5f5ed AM |
3765 | Reloc_section* plt_rel = new Reloc_section(false); |
3766 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
3767 | elfcpp::SHF_ALLOC, plt_rel, | |
3768 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
3769 | this->plt_ | |
3770 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 3771 | "** PLT"); |
cf43a2fe AM |
3772 | layout->add_output_section_data(".plt", |
3773 | (size == 32 | |
3774 | ? elfcpp::SHT_PROGBITS | |
3775 | : elfcpp::SHT_NOBITS), | |
3776 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3777 | this->plt_, | |
3778 | (size == 32 | |
3779 | ? ORDER_SMALL_DATA | |
3780 | : ORDER_SMALL_BSS), | |
3781 | false); | |
3254d32c AM |
3782 | |
3783 | Output_section* rela_plt_os = plt_rel->output_section(); | |
3784 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
3785 | } |
3786 | } | |
3787 | ||
e5d5f5ed AM |
3788 | // Create the IPLT section. |
3789 | ||
3790 | template<int size, bool big_endian> | |
3791 | void | |
40b469d7 AM |
3792 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
3793 | Layout* layout) | |
e5d5f5ed AM |
3794 | { |
3795 | if (this->iplt_ == NULL) | |
3796 | { | |
40b469d7 | 3797 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
3798 | |
3799 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
3800 | if (this->rela_dyn_->output_section()) |
3801 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
3802 | this->iplt_ |
3803 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 3804 | "** IPLT"); |
6528b6eb AM |
3805 | if (this->plt_->output_section()) |
3806 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
3807 | } |
3808 | } | |
3809 | ||
ec661b9d | 3810 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
3811 | |
3812 | template<int size, bool big_endian> | |
ec661b9d | 3813 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
3814 | { |
3815 | public: | |
ec661b9d AM |
3816 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
3817 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3818 | size, big_endian> Reloc_section; | |
c9269dff | 3819 | |
ec661b9d AM |
3820 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
3821 | Reloc_section* brlt_rel) | |
3822 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3823 | rel_(brlt_rel), | |
3824 | targ_(targ) | |
3825 | { } | |
cf43a2fe | 3826 | |
06f30c9d CC |
3827 | void |
3828 | reset_brlt_sizes() | |
3829 | { | |
3830 | this->reset_data_size(); | |
3831 | this->rel_->reset_data_size(); | |
3832 | } | |
3833 | ||
3834 | void | |
3835 | finalize_brlt_sizes() | |
3836 | { | |
3837 | this->finalize_data_size(); | |
3838 | this->rel_->finalize_data_size(); | |
3839 | } | |
3840 | ||
ec661b9d | 3841 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 3842 | void |
ec661b9d AM |
3843 | add_reloc(Address to, unsigned int off) |
3844 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 3845 | |
ec661b9d | 3846 | // Update section and reloc section size. |
e5d5f5ed | 3847 | void |
ec661b9d AM |
3848 | set_current_size(unsigned int num_branches) |
3849 | { | |
3850 | this->reset_address_and_file_offset(); | |
3851 | this->set_current_data_size(num_branches * 16); | |
3852 | this->finalize_data_size(); | |
3853 | Output_section* os = this->output_section(); | |
3854 | os->set_section_offsets_need_adjustment(); | |
3855 | if (this->rel_ != NULL) | |
3856 | { | |
0e123f69 | 3857 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
3858 | this->rel_->reset_address_and_file_offset(); |
3859 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
3860 | this->rel_->finalize_data_size(); | |
3861 | Output_section* os = this->rel_->output_section(); | |
3862 | os->set_section_offsets_need_adjustment(); | |
3863 | } | |
3864 | } | |
cf43a2fe | 3865 | |
ec661b9d AM |
3866 | protected: |
3867 | void | |
3868 | do_adjust_output_section(Output_section* os) | |
3869 | { | |
3870 | os->set_entsize(0); | |
3871 | } | |
e5d5f5ed | 3872 | |
ec661b9d AM |
3873 | // Write to a map file. |
3874 | void | |
3875 | do_print_to_mapfile(Mapfile* mapfile) const | |
3876 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 3877 | |
ec661b9d AM |
3878 | private: |
3879 | // Write out the BRLT data. | |
3880 | void | |
3881 | do_write(Output_file*); | |
c9824451 | 3882 | |
ec661b9d AM |
3883 | // The reloc section. |
3884 | Reloc_section* rel_; | |
3885 | Target_powerpc<size, big_endian>* targ_; | |
3886 | }; | |
cf43a2fe | 3887 | |
ec661b9d AM |
3888 | // Make the branch lookup table section. |
3889 | ||
3890 | template<int size, bool big_endian> | |
3891 | void | |
3892 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
3893 | { | |
3894 | if (size == 64 && this->brlt_section_ == NULL) | |
3895 | { | |
3896 | Reloc_section* brlt_rel = NULL; | |
3897 | bool is_pic = parameters->options().output_is_position_independent(); | |
3898 | if (is_pic) | |
3899 | { | |
6830ee24 AM |
3900 | // When PIC we can't fill in .branch_lt (like .plt it can be |
3901 | // a bss style section) but must initialise at runtime via | |
6528b6eb | 3902 | // dynamic relocations. |
ec661b9d AM |
3903 | this->rela_dyn_section(layout); |
3904 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
3905 | if (this->rela_dyn_->output_section()) |
3906 | this->rela_dyn_->output_section() | |
3907 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
3908 | } |
3909 | this->brlt_section_ | |
3910 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 3911 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
3912 | this->plt_->output_section() |
3913 | ->add_output_section_data(this->brlt_section_); | |
3914 | else | |
6830ee24 | 3915 | layout->add_output_section_data(".branch_lt", |
ec661b9d AM |
3916 | (is_pic ? elfcpp::SHT_NOBITS |
3917 | : elfcpp::SHT_PROGBITS), | |
3918 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3919 | this->brlt_section_, | |
3920 | (is_pic ? ORDER_SMALL_BSS | |
3921 | : ORDER_SMALL_DATA), | |
3922 | false); | |
3923 | } | |
3924 | } | |
3925 | ||
6830ee24 | 3926 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
3927 | |
3928 | template<int size, bool big_endian> | |
3929 | void | |
3930 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3931 | { | |
3932 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
3933 | { | |
3934 | const section_size_type offset = this->offset(); | |
3935 | const section_size_type oview_size | |
3936 | = convert_to_section_size_type(this->data_size()); | |
3937 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3938 | ||
3939 | this->targ_->write_branch_lookup_table(oview); | |
3940 | of->write_output_view(offset, oview_size, oview); | |
3941 | } | |
3942 | } | |
3943 | ||
9e69ed50 AM |
3944 | static inline uint32_t |
3945 | l(uint32_t a) | |
3946 | { | |
3947 | return a & 0xffff; | |
3948 | } | |
3949 | ||
3950 | static inline uint32_t | |
3951 | hi(uint32_t a) | |
3952 | { | |
3953 | return l(a >> 16); | |
3954 | } | |
3955 | ||
3956 | static inline uint32_t | |
3957 | ha(uint32_t a) | |
3958 | { | |
3959 | return hi(a + 0x8000); | |
3960 | } | |
3961 | ||
9d5781f8 AM |
3962 | template<int size> |
3963 | struct Eh_cie | |
3964 | { | |
3965 | static const unsigned char eh_frame_cie[12]; | |
3966 | }; | |
3967 | ||
3968 | template<int size> | |
3969 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
3970 | { | |
3971 | 1, // CIE version. | |
3972 | 'z', 'R', 0, // Augmentation string. | |
3973 | 4, // Code alignment. | |
3974 | 0x80 - size / 8 , // Data alignment. | |
3975 | 65, // RA reg. | |
3976 | 1, // Augmentation size. | |
3977 | (elfcpp::DW_EH_PE_pcrel | |
3978 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
3979 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
3980 | }; | |
3981 | ||
b4f7960d AM |
3982 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
3983 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
3984 | { |
3985 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3986 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3987 | 0, // Augmentation size. | |
3988 | elfcpp::DW_CFA_advance_loc + 1, | |
3989 | elfcpp::DW_CFA_register, 65, 12, | |
3990 | elfcpp::DW_CFA_advance_loc + 4, | |
3991 | elfcpp::DW_CFA_restore_extended, 65 | |
3992 | }; | |
3993 | ||
b4f7960d AM |
3994 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
3995 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
3996 | { | |
3997 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3998 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3999 | 0, // Augmentation size. | |
4000 | elfcpp::DW_CFA_advance_loc + 1, | |
4001 | elfcpp::DW_CFA_register, 65, 0, | |
4002 | elfcpp::DW_CFA_advance_loc + 4, | |
4003 | elfcpp::DW_CFA_restore_extended, 65 | |
4004 | }; | |
4005 | ||
9d5781f8 AM |
4006 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4007 | static const unsigned char glink_eh_frame_fde_32[] = | |
4008 | { | |
4009 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4010 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4011 | 0, // Augmentation size. | |
4012 | elfcpp::DW_CFA_advance_loc + 2, | |
4013 | elfcpp::DW_CFA_register, 65, 0, | |
4014 | elfcpp::DW_CFA_advance_loc + 4, | |
4015 | elfcpp::DW_CFA_restore_extended, 65 | |
4016 | }; | |
4017 | ||
4018 | static const unsigned char default_fde[] = | |
4019 | { | |
4020 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4021 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4022 | 0, // Augmentation size. | |
4023 | elfcpp::DW_CFA_nop, // Pad. | |
4024 | elfcpp::DW_CFA_nop, | |
4025 | elfcpp::DW_CFA_nop | |
4026 | }; | |
4027 | ||
9e69ed50 AM |
4028 | template<bool big_endian> |
4029 | static inline void | |
4030 | write_insn(unsigned char* p, uint32_t v) | |
4031 | { | |
4032 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4033 | } | |
4034 | ||
ec661b9d AM |
4035 | // Stub_table holds information about plt and long branch stubs. |
4036 | // Stubs are built in an area following some input section determined | |
4037 | // by group_sections(). This input section is converted to a relaxed | |
4038 | // input section allowing it to be resized to accommodate the stubs | |
4039 | ||
4040 | template<int size, bool big_endian> | |
4041 | class Stub_table : public Output_relaxed_input_section | |
4042 | { | |
4043 | public: | |
7e57d19e AM |
4044 | struct Plt_stub_ent |
4045 | { | |
4046 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
7ee7ff70 | 4047 | : off_(off), indx_(indx), r2save_(0), localentry0_(0) |
7e57d19e AM |
4048 | { } |
4049 | ||
4050 | unsigned int off_; | |
7ee7ff70 | 4051 | unsigned int indx_ : 30; |
7e57d19e | 4052 | unsigned int r2save_ : 1; |
7ee7ff70 | 4053 | unsigned int localentry0_ : 1; |
7e57d19e | 4054 | }; |
ec661b9d AM |
4055 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4056 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4057 | ||
a3e60ddb AM |
4058 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4059 | Output_section* output_section, | |
590b87ff AM |
4060 | const Output_section::Input_section* owner, |
4061 | uint32_t id) | |
a3e60ddb AM |
4062 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4063 | owner->relobj() | |
4064 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4065 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4066 | orig_data_size_(owner->current_data_size()), |
4067 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4068 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
590b87ff | 4069 | eh_frame_added_(false), need_save_res_(false), uniq_(id) |
a3e60ddb AM |
4070 | { |
4071 | this->set_output_section(output_section); | |
ec661b9d | 4072 | |
a3e60ddb AM |
4073 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4074 | new_relaxed.push_back(this); | |
4075 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4076 | } | |
ec661b9d AM |
4077 | |
4078 | // Add a plt call stub. | |
a3e60ddb AM |
4079 | bool |
4080 | add_plt_call_entry(Address, | |
4081 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4082 | const Symbol*, |
4083 | unsigned int, | |
7e57d19e AM |
4084 | Address, |
4085 | bool); | |
ec661b9d | 4086 | |
a3e60ddb AM |
4087 | bool |
4088 | add_plt_call_entry(Address, | |
4089 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4090 | unsigned int, |
4091 | unsigned int, | |
7e57d19e AM |
4092 | Address, |
4093 | bool); | |
ec661b9d AM |
4094 | |
4095 | // Find a given plt call stub. | |
7e57d19e | 4096 | const Plt_stub_ent* |
ec661b9d AM |
4097 | find_plt_call_entry(const Symbol*) const; |
4098 | ||
7e57d19e | 4099 | const Plt_stub_ent* |
ec661b9d AM |
4100 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4101 | unsigned int) const; | |
4102 | ||
7e57d19e | 4103 | const Plt_stub_ent* |
ec661b9d AM |
4104 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4105 | const Symbol*, | |
4106 | unsigned int, | |
4107 | Address) const; | |
4108 | ||
7e57d19e | 4109 | const Plt_stub_ent* |
ec661b9d AM |
4110 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4111 | unsigned int, | |
4112 | unsigned int, | |
4113 | Address) const; | |
4114 | ||
4115 | // Add a long branch stub. | |
a3e60ddb AM |
4116 | bool |
4117 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 4118 | unsigned int, Address, Address, bool); |
ec661b9d AM |
4119 | |
4120 | Address | |
9d5781f8 AM |
4121 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4122 | Address) const; | |
ec661b9d | 4123 | |
a3e60ddb AM |
4124 | bool |
4125 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4126 | { | |
cbcb23fa | 4127 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
4128 | if (max_branch_offset == 0) |
4129 | return true; | |
4130 | gold_assert(from != invalid_address); | |
4131 | Address loc = off + this->stub_address(); | |
4132 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4133 | } | |
4134 | ||
ec661b9d | 4135 | void |
a3e60ddb | 4136 | clear_stubs(bool all) |
cf43a2fe | 4137 | { |
9e69ed50 AM |
4138 | this->plt_call_stubs_.clear(); |
4139 | this->plt_size_ = 0; | |
ec661b9d AM |
4140 | this->long_branch_stubs_.clear(); |
4141 | this->branch_size_ = 0; | |
d49044c7 | 4142 | this->need_save_res_ = false; |
a3e60ddb AM |
4143 | if (all) |
4144 | { | |
4145 | this->last_plt_size_ = 0; | |
4146 | this->last_branch_size_ = 0; | |
4147 | } | |
cf43a2fe AM |
4148 | } |
4149 | ||
ec661b9d AM |
4150 | Address |
4151 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4152 | { |
ec661b9d AM |
4153 | Address start_off = off; |
4154 | off += this->orig_data_size_; | |
4155 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4156 | if (this->need_save_res_) |
4157 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4158 | if (my_size != 0) |
4159 | off = align_address(off, this->stub_align()); | |
4160 | // Include original section size and alignment padding in size | |
4161 | my_size += off - start_off; | |
6395d38b HS |
4162 | // Ensure new size is always larger than min size |
4163 | // threshold. Alignment requirement is included in "my_size", so | |
4164 | // increase "my_size" does not invalidate alignment. | |
4165 | if (my_size < this->min_size_threshold_) | |
4166 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4167 | this->reset_address_and_file_offset(); |
4168 | this->set_current_data_size(my_size); | |
4169 | this->set_address_and_file_offset(os->address() + start_off, | |
4170 | os->offset() + start_off); | |
4171 | return my_size; | |
cf43a2fe AM |
4172 | } |
4173 | ||
ec661b9d | 4174 | Address |
9d5781f8 | 4175 | stub_address() const |
ec661b9d AM |
4176 | { |
4177 | return align_address(this->address() + this->orig_data_size_, | |
4178 | this->stub_align()); | |
4179 | } | |
4180 | ||
4181 | Address | |
9d5781f8 | 4182 | stub_offset() const |
ec661b9d AM |
4183 | { |
4184 | return align_address(this->offset() + this->orig_data_size_, | |
4185 | this->stub_align()); | |
4186 | } | |
4187 | ||
4188 | section_size_type | |
4189 | plt_size() const | |
4190 | { return this->plt_size_; } | |
4191 | ||
590b87ff AM |
4192 | void |
4193 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4194 | { this->min_size_threshold_ = min_size; } |
4195 | ||
590b87ff AM |
4196 | void |
4197 | define_stub_syms(Symbol_table*); | |
4198 | ||
ec661b9d AM |
4199 | bool |
4200 | size_update() | |
4201 | { | |
4202 | Output_section* os = this->output_section(); | |
4203 | if (os->addralign() < this->stub_align()) | |
4204 | { | |
4205 | os->set_addralign(this->stub_align()); | |
4206 | // FIXME: get rid of the insane checkpointing. | |
4207 | // We can't increase alignment of the input section to which | |
4208 | // stubs are attached; The input section may be .init which | |
4209 | // is pasted together with other .init sections to form a | |
4210 | // function. Aligning might insert zero padding resulting in | |
4211 | // sigill. However we do need to increase alignment of the | |
4212 | // output section so that the align_address() on offset in | |
4213 | // set_address_and_size() adds the same padding as the | |
4214 | // align_address() on address in stub_address(). | |
4215 | // What's more, we need this alignment for the layout done in | |
4216 | // relaxation_loop_body() so that the output section starts at | |
4217 | // a suitably aligned address. | |
4218 | os->checkpoint_set_addralign(this->stub_align()); | |
4219 | } | |
9e69ed50 AM |
4220 | if (this->last_plt_size_ != this->plt_size_ |
4221 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4222 | { |
9e69ed50 AM |
4223 | this->last_plt_size_ = this->plt_size_; |
4224 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4225 | return true; |
4226 | } | |
4227 | return false; | |
4228 | } | |
4229 | ||
9d5781f8 AM |
4230 | // Add .eh_frame info for this stub section. Unlike other linker |
4231 | // generated .eh_frame this is added late in the link, because we | |
4232 | // only want the .eh_frame info if this particular stub section is | |
4233 | // non-empty. | |
4234 | void | |
4235 | add_eh_frame(Layout* layout) | |
4236 | { | |
4237 | if (!this->eh_frame_added_) | |
4238 | { | |
4239 | if (!parameters->options().ld_generated_unwind_info()) | |
4240 | return; | |
4241 | ||
4242 | // Since we add stub .eh_frame info late, it must be placed | |
4243 | // after all other linker generated .eh_frame info so that | |
4244 | // merge mapping need not be updated for input sections. | |
4245 | // There is no provision to use a different CIE to that used | |
4246 | // by .glink. | |
4247 | if (!this->targ_->has_glink()) | |
4248 | return; | |
4249 | ||
4250 | layout->add_eh_frame_for_plt(this, | |
4251 | Eh_cie<size>::eh_frame_cie, | |
4252 | sizeof (Eh_cie<size>::eh_frame_cie), | |
4253 | default_fde, | |
4254 | sizeof (default_fde)); | |
4255 | this->eh_frame_added_ = true; | |
4256 | } | |
4257 | } | |
4258 | ||
ec661b9d AM |
4259 | Target_powerpc<size, big_endian>* |
4260 | targ() const | |
4261 | { return targ_; } | |
6ce78956 | 4262 | |
cf43a2fe | 4263 | private: |
bdab445c AM |
4264 | class Plt_stub_key; |
4265 | class Plt_stub_key_hash; | |
bdab445c AM |
4266 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4267 | Plt_stub_key_hash> Plt_stub_entries; | |
590b87ff AM |
4268 | class Branch_stub_ent; |
4269 | class Branch_stub_ent_hash; | |
4270 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
4271 | Branch_stub_ent_hash> Branch_stub_entries; | |
9e69ed50 AM |
4272 | |
4273 | // Alignment of stub section. | |
ec661b9d | 4274 | unsigned int |
9e69ed50 AM |
4275 | stub_align() const |
4276 | { | |
4277 | if (size == 32) | |
4278 | return 16; | |
4279 | unsigned int min_align = 32; | |
4280 | unsigned int user_align = 1 << parameters->options().plt_align(); | |
4281 | return std::max(user_align, min_align); | |
4282 | } | |
cf43a2fe | 4283 | |
91c2b899 AM |
4284 | // Return the plt offset for the given call stub. |
4285 | Address | |
4286 | plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const | |
4287 | { | |
4288 | const Symbol* gsym = p->first.sym_; | |
4289 | if (gsym != NULL) | |
4290 | { | |
4291 | *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
4292 | && gsym->can_use_relative_reloc(false)); | |
4293 | return gsym->plt_offset(); | |
4294 | } | |
4295 | else | |
4296 | { | |
4297 | *is_iplt = true; | |
4298 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; | |
4299 | unsigned int local_sym_index = p->first.locsym_; | |
4300 | return relobj->local_plt_offset(local_sym_index); | |
4301 | } | |
4302 | } | |
4303 | ||
9e69ed50 | 4304 | // Size of a given plt call stub. |
ec661b9d | 4305 | unsigned int |
9e69ed50 AM |
4306 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
4307 | { | |
4308 | if (size == 32) | |
4309 | return 16; | |
4310 | ||
91c2b899 AM |
4311 | bool is_iplt; |
4312 | Address plt_addr = this->plt_off(p, &is_iplt); | |
4313 | if (is_iplt) | |
4314 | plt_addr += this->targ_->iplt_section()->address(); | |
9e69ed50 | 4315 | else |
91c2b899 AM |
4316 | plt_addr += this->targ_->plt_section()->address(); |
4317 | Address got_addr = this->targ_->got_section()->output_section()->address(); | |
9e69ed50 AM |
4318 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
4319 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
4320 | got_addr += ppcobj->toc_base_offset(); |
4321 | Address off = plt_addr - got_addr; | |
b4f7960d AM |
4322 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
4323 | if (this->targ_->abiversion() < 2) | |
4324 | { | |
4325 | bool static_chain = parameters->options().plt_static_chain(); | |
4326 | bool thread_safe = this->targ_->plt_thread_safe(); | |
4327 | bytes += (4 | |
4328 | + 4 * static_chain | |
4329 | + 8 * thread_safe | |
4330 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
4331 | } | |
9e69ed50 AM |
4332 | unsigned int align = 1 << parameters->options().plt_align(); |
4333 | if (align > 1) | |
4334 | bytes = (bytes + align - 1) & -align; | |
4335 | return bytes; | |
4336 | } | |
ec661b9d AM |
4337 | |
4338 | // Return long branch stub size. | |
4339 | unsigned int | |
590b87ff | 4340 | branch_stub_size(typename Branch_stub_entries::const_iterator p) |
ec661b9d | 4341 | { |
590b87ff AM |
4342 | Address loc = this->stub_address() + this->last_plt_size_ + p->second; |
4343 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
ec661b9d AM |
4344 | return 4; |
4345 | if (size == 64 || !parameters->options().output_is_position_independent()) | |
4346 | return 16; | |
4347 | return 32; | |
4348 | } | |
4349 | ||
4350 | // Write out stubs. | |
cf43a2fe AM |
4351 | void |
4352 | do_write(Output_file*); | |
4353 | ||
ec661b9d | 4354 | // Plt call stub keys. |
bdab445c | 4355 | class Plt_stub_key |
cf43a2fe | 4356 | { |
d1a8cabd | 4357 | public: |
bdab445c | 4358 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
4359 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
4360 | { } | |
4361 | ||
bdab445c | 4362 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 4363 | unsigned int locsym_index) |
c9824451 AM |
4364 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4365 | { } | |
4366 | ||
bdab445c | 4367 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4368 | const Symbol* sym, |
4369 | unsigned int r_type, | |
4370 | Address addend) | |
e5d5f5ed | 4371 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
4372 | { |
4373 | if (size != 32) | |
ec661b9d | 4374 | this->addend_ = addend; |
d1a8cabd | 4375 | else if (parameters->options().output_is_position_independent() |
ec661b9d | 4376 | && r_type == elfcpp::R_PPC_PLTREL24) |
cf43a2fe | 4377 | { |
ec661b9d | 4378 | this->addend_ = addend; |
e5d5f5ed | 4379 | if (this->addend_ >= 32768) |
d1a8cabd | 4380 | this->object_ = object; |
cf43a2fe AM |
4381 | } |
4382 | } | |
4383 | ||
bdab445c | 4384 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4385 | unsigned int locsym_index, |
4386 | unsigned int r_type, | |
4387 | Address addend) | |
e5d5f5ed AM |
4388 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4389 | { | |
4390 | if (size != 32) | |
ec661b9d | 4391 | this->addend_ = addend; |
e5d5f5ed | 4392 | else if (parameters->options().output_is_position_independent() |
ec661b9d AM |
4393 | && r_type == elfcpp::R_PPC_PLTREL24) |
4394 | this->addend_ = addend; | |
e5d5f5ed AM |
4395 | } |
4396 | ||
bdab445c | 4397 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
4398 | { |
4399 | return (this->sym_ == that.sym_ | |
4400 | && this->object_ == that.object_ | |
e5d5f5ed AM |
4401 | && this->addend_ == that.addend_ |
4402 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 4403 | } |
c9269dff AM |
4404 | |
4405 | const Symbol* sym_; | |
e5d5f5ed AM |
4406 | const Sized_relobj_file<size, big_endian>* object_; |
4407 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
4408 | unsigned int locsym_; | |
cf43a2fe AM |
4409 | }; |
4410 | ||
bdab445c | 4411 | class Plt_stub_key_hash |
cf43a2fe | 4412 | { |
d1a8cabd | 4413 | public: |
bdab445c | 4414 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
4415 | { |
4416 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
4417 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
4418 | ^ ent.addend_ |
4419 | ^ ent.locsym_); | |
cf43a2fe | 4420 | } |
ec661b9d AM |
4421 | }; |
4422 | ||
4423 | // Long branch stub keys. | |
4424 | class Branch_stub_ent | |
4425 | { | |
4426 | public: | |
d49044c7 AM |
4427 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, |
4428 | Address to, bool save_res) | |
4429 | : dest_(to), toc_base_off_(0), save_res_(save_res) | |
ec661b9d AM |
4430 | { |
4431 | if (size == 64) | |
4432 | toc_base_off_ = obj->toc_base_offset(); | |
4433 | } | |
4434 | ||
4435 | bool operator==(const Branch_stub_ent& that) const | |
4436 | { | |
4437 | return (this->dest_ == that.dest_ | |
4438 | && (size == 32 | |
4439 | || this->toc_base_off_ == that.toc_base_off_)); | |
4440 | } | |
cf43a2fe | 4441 | |
ec661b9d AM |
4442 | Address dest_; |
4443 | unsigned int toc_base_off_; | |
d49044c7 | 4444 | bool save_res_; |
ec661b9d | 4445 | }; |
cf43a2fe | 4446 | |
ec661b9d AM |
4447 | class Branch_stub_ent_hash |
4448 | { | |
4449 | public: | |
4450 | size_t operator()(const Branch_stub_ent& ent) const | |
4451 | { return ent.dest_ ^ ent.toc_base_off_; } | |
4452 | }; | |
cf43a2fe | 4453 | |
ec661b9d | 4454 | // In a sane world this would be a global. |
cf43a2fe | 4455 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 4456 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
4457 | Plt_stub_entries plt_call_stubs_; |
4458 | // Map destination address to stub offset. | |
ec661b9d AM |
4459 | Branch_stub_entries long_branch_stubs_; |
4460 | // size of input section | |
4461 | section_size_type orig_data_size_; | |
4462 | // size of stubs | |
9e69ed50 | 4463 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
4464 | // Some rare cases cause (PR/20529) fluctuation in stub table |
4465 | // size, which leads to an endless relax loop. This is to be fixed | |
4466 | // by, after the first few iterations, allowing only increase of | |
4467 | // stub table size. This variable sets the minimal possible size of | |
4468 | // a stub table, it is zero for the first few iterations, then | |
4469 | // increases monotonically. | |
4470 | Address min_size_threshold_; | |
9d5781f8 AM |
4471 | // Whether .eh_frame info has been created for this stub section. |
4472 | bool eh_frame_added_; | |
d49044c7 AM |
4473 | // Set if this stub group needs a copy of out-of-line register |
4474 | // save/restore functions. | |
4475 | bool need_save_res_; | |
590b87ff AM |
4476 | // Per stub table unique identifier. |
4477 | uint32_t uniq_; | |
cf43a2fe AM |
4478 | }; |
4479 | ||
ec661b9d | 4480 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 4481 | // sym/object/addend combo. |
cf43a2fe AM |
4482 | |
4483 | template<int size, bool big_endian> | |
a3e60ddb | 4484 | bool |
ec661b9d | 4485 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4486 | Address from, |
c9824451 | 4487 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4488 | const Symbol* gsym, |
ec661b9d | 4489 | unsigned int r_type, |
7e57d19e AM |
4490 | Address addend, |
4491 | bool tocsave) | |
cf43a2fe | 4492 | { |
bdab445c AM |
4493 | Plt_stub_key key(object, gsym, r_type, addend); |
4494 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4495 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4496 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4497 | if (p.second) |
7ee7ff70 AM |
4498 | { |
4499 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
4500 | if (size == 64 | |
4501 | && this->targ_->is_elfv2_localentry0(gsym)) | |
4502 | { | |
4503 | p.first->second.localentry0_ = 1; | |
4504 | this->targ_->set_has_localentry0(); | |
4505 | } | |
4506 | } | |
4507 | if (size == 64 | |
4508 | && !tocsave | |
4509 | && !p.first->second.localentry0_) | |
7e57d19e | 4510 | p.first->second.r2save_ = 1; |
bdab445c | 4511 | return this->can_reach_stub(from, ent.off_, r_type); |
cf43a2fe AM |
4512 | } |
4513 | ||
e5d5f5ed | 4514 | template<int size, bool big_endian> |
a3e60ddb | 4515 | bool |
ec661b9d | 4516 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4517 | Address from, |
c9824451 | 4518 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4519 | unsigned int locsym_index, |
ec661b9d | 4520 | unsigned int r_type, |
7e57d19e AM |
4521 | Address addend, |
4522 | bool tocsave) | |
e5d5f5ed | 4523 | { |
bdab445c AM |
4524 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4525 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4526 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4527 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4528 | if (p.second) |
7ee7ff70 AM |
4529 | { |
4530 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
4531 | if (size == 64 | |
4532 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) | |
4533 | { | |
4534 | p.first->second.localentry0_ = 1; | |
4535 | this->targ_->set_has_localentry0(); | |
4536 | } | |
4537 | } | |
4538 | if (size == 64 | |
4539 | && !tocsave | |
4540 | && !p.first->second.localentry0_) | |
7e57d19e | 4541 | p.first->second.r2save_ = 1; |
bdab445c | 4542 | return this->can_reach_stub(from, ent.off_, r_type); |
e5d5f5ed AM |
4543 | } |
4544 | ||
ec661b9d AM |
4545 | // Find a plt call stub. |
4546 | ||
cf43a2fe | 4547 | template<int size, bool big_endian> |
7e57d19e | 4548 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4549 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4550 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4551 | const Symbol* gsym, |
ec661b9d AM |
4552 | unsigned int r_type, |
4553 | Address addend) const | |
c9824451 | 4554 | { |
bdab445c AM |
4555 | Plt_stub_key key(object, gsym, r_type, addend); |
4556 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4557 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4558 | return NULL; |
4559 | return &p->second; | |
c9824451 AM |
4560 | } |
4561 | ||
4562 | template<int size, bool big_endian> | |
7e57d19e | 4563 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4564 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4565 | { |
bdab445c AM |
4566 | Plt_stub_key key(gsym); |
4567 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4568 | if (p == this->plt_call_stubs_.end()) |
4569 | return NULL; | |
4570 | return &p->second; | |
cf43a2fe AM |
4571 | } |
4572 | ||
e5d5f5ed | 4573 | template<int size, bool big_endian> |
7e57d19e | 4574 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4575 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4576 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4577 | unsigned int locsym_index, |
ec661b9d AM |
4578 | unsigned int r_type, |
4579 | Address addend) const | |
e5d5f5ed | 4580 | { |
bdab445c AM |
4581 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4582 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4583 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4584 | return NULL; |
4585 | return &p->second; | |
c9824451 AM |
4586 | } |
4587 | ||
4588 | template<int size, bool big_endian> | |
7e57d19e | 4589 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4590 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4591 | const Sized_relobj_file<size, big_endian>* object, |
4592 | unsigned int locsym_index) const | |
4593 | { | |
bdab445c AM |
4594 | Plt_stub_key key(object, locsym_index); |
4595 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4596 | if (p == this->plt_call_stubs_.end()) |
4597 | return NULL; | |
4598 | return &p->second; | |
ec661b9d AM |
4599 | } |
4600 | ||
4601 | // Add a long branch stub if we don't already have one to given | |
4602 | // destination. | |
4603 | ||
4604 | template<int size, bool big_endian> | |
a3e60ddb | 4605 | bool |
ec661b9d AM |
4606 | Stub_table<size, big_endian>::add_long_branch_entry( |
4607 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4608 | unsigned int r_type, |
4609 | Address from, | |
d49044c7 AM |
4610 | Address to, |
4611 | bool save_res) | |
ec661b9d | 4612 | { |
d49044c7 | 4613 | Branch_stub_ent ent(object, to, save_res); |
ec661b9d | 4614 | Address off = this->branch_size_; |
590b87ff AM |
4615 | std::pair<typename Branch_stub_entries::iterator, bool> p |
4616 | = this->long_branch_stubs_.insert(std::make_pair(ent, off)); | |
4617 | if (p.second) | |
ec661b9d | 4618 | { |
d49044c7 AM |
4619 | if (save_res) |
4620 | this->need_save_res_ = true; | |
4621 | else | |
4622 | { | |
590b87ff | 4623 | unsigned int stub_size = this->branch_stub_size(p.first); |
d49044c7 AM |
4624 | this->branch_size_ = off + stub_size; |
4625 | if (size == 64 && stub_size != 4) | |
4626 | this->targ_->add_branch_lookup_table(to); | |
4627 | } | |
ec661b9d | 4628 | } |
a3e60ddb | 4629 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4630 | } |
4631 | ||
d49044c7 | 4632 | // Find long branch stub offset. |
ec661b9d AM |
4633 | |
4634 | template<int size, bool big_endian> | |
ec5b8187 | 4635 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4636 | Stub_table<size, big_endian>::find_long_branch_entry( |
4637 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4638 | Address to) const |
ec661b9d | 4639 | { |
d49044c7 | 4640 | Branch_stub_ent ent(object, to, false); |
ec661b9d AM |
4641 | typename Branch_stub_entries::const_iterator p |
4642 | = this->long_branch_stubs_.find(ent); | |
d49044c7 AM |
4643 | if (p == this->long_branch_stubs_.end()) |
4644 | return invalid_address; | |
4645 | if (p->first.save_res_) | |
4646 | return to - this->targ_->savres_section()->address() + this->branch_size_; | |
4647 | return p->second; | |
e5d5f5ed AM |
4648 | } |
4649 | ||
ec661b9d AM |
4650 | // A class to handle .glink. |
4651 | ||
4652 | template<int size, bool big_endian> | |
4653 | class Output_data_glink : public Output_section_data | |
4654 | { | |
4655 | public: | |
9055360d AM |
4656 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4657 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
4658 | static const int pltresolve_size = 16*4; |
4659 | ||
4660 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
4661 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
4662 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
4663 | { } |
4664 | ||
9d5781f8 | 4665 | void |
9055360d | 4666 | add_eh_frame(Layout* layout); |
9d5781f8 | 4667 | |
9055360d AM |
4668 | void |
4669 | add_global_entry(const Symbol*); | |
4670 | ||
4671 | Address | |
4672 | find_global_entry(const Symbol*) const; | |
4673 | ||
4674 | Address | |
4675 | global_entry_address() const | |
4676 | { | |
4677 | gold_assert(this->is_data_size_valid()); | |
4678 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4679 | return this->address() + global_entry_off; | |
9d5781f8 AM |
4680 | } |
4681 | ||
ec661b9d AM |
4682 | protected: |
4683 | // Write to a map file. | |
4684 | void | |
4685 | do_print_to_mapfile(Mapfile* mapfile) const | |
4686 | { mapfile->print_output_data(this, _("** glink")); } | |
4687 | ||
4688 | private: | |
4689 | void | |
4690 | set_final_data_size(); | |
4691 | ||
4692 | // Write out .glink | |
4693 | void | |
4694 | do_write(Output_file*); | |
4695 | ||
4696 | // Allows access to .got and .plt for do_write. | |
4697 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
4698 | |
4699 | // Map sym to stub offset. | |
4700 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
4701 | Global_entry_stub_entries global_entry_stubs_; | |
4702 | ||
4703 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
4704 | }; |
4705 | ||
9055360d AM |
4706 | template<int size, bool big_endian> |
4707 | void | |
4708 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
4709 | { | |
4710 | if (!parameters->options().ld_generated_unwind_info()) | |
4711 | return; | |
4712 | ||
4713 | if (size == 64) | |
4714 | { | |
4715 | if (this->targ_->abiversion() < 2) | |
4716 | layout->add_eh_frame_for_plt(this, | |
4717 | Eh_cie<64>::eh_frame_cie, | |
4718 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4719 | glink_eh_frame_fde_64v1, | |
4720 | sizeof (glink_eh_frame_fde_64v1)); | |
4721 | else | |
4722 | layout->add_eh_frame_for_plt(this, | |
4723 | Eh_cie<64>::eh_frame_cie, | |
4724 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4725 | glink_eh_frame_fde_64v2, | |
4726 | sizeof (glink_eh_frame_fde_64v2)); | |
4727 | } | |
4728 | else | |
4729 | { | |
4730 | // 32-bit .glink can use the default since the CIE return | |
4731 | // address reg, LR, is valid. | |
4732 | layout->add_eh_frame_for_plt(this, | |
4733 | Eh_cie<32>::eh_frame_cie, | |
4734 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4735 | default_fde, | |
4736 | sizeof (default_fde)); | |
4737 | // Except where LR is used in a PIC __glink_PLTresolve. | |
4738 | if (parameters->options().output_is_position_independent()) | |
4739 | layout->add_eh_frame_for_plt(this, | |
4740 | Eh_cie<32>::eh_frame_cie, | |
4741 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4742 | glink_eh_frame_fde_32, | |
4743 | sizeof (glink_eh_frame_fde_32)); | |
4744 | } | |
4745 | } | |
4746 | ||
4747 | template<int size, bool big_endian> | |
4748 | void | |
4749 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
4750 | { | |
4751 | std::pair<typename Global_entry_stub_entries::iterator, bool> p | |
4752 | = this->global_entry_stubs_.insert(std::make_pair(gsym, this->ge_size_)); | |
4753 | if (p.second) | |
4754 | this->ge_size_ += 16; | |
4755 | } | |
4756 | ||
4757 | template<int size, bool big_endian> | |
4758 | typename Output_data_glink<size, big_endian>::Address | |
4759 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
4760 | { | |
4761 | typename Global_entry_stub_entries::const_iterator p | |
4762 | = this->global_entry_stubs_.find(gsym); | |
4763 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
4764 | } | |
4765 | ||
cf43a2fe AM |
4766 | template<int size, bool big_endian> |
4767 | void | |
4768 | Output_data_glink<size, big_endian>::set_final_data_size() | |
4769 | { | |
ec661b9d AM |
4770 | unsigned int count = this->targ_->plt_entry_count(); |
4771 | section_size_type total = 0; | |
cf43a2fe AM |
4772 | |
4773 | if (count != 0) | |
4774 | { | |
4775 | if (size == 32) | |
4776 | { | |
cf43a2fe AM |
4777 | // space for branch table |
4778 | total += 4 * (count - 1); | |
4779 | ||
4780 | total += -total & 15; | |
4781 | total += this->pltresolve_size; | |
4782 | } | |
4783 | else | |
4784 | { | |
cf43a2fe AM |
4785 | total += this->pltresolve_size; |
4786 | ||
4787 | // space for branch table | |
b4f7960d AM |
4788 | total += 4 * count; |
4789 | if (this->targ_->abiversion() < 2) | |
4790 | { | |
4791 | total += 4 * count; | |
4792 | if (count > 0x8000) | |
4793 | total += 4 * (count - 0x8000); | |
4794 | } | |
cf43a2fe AM |
4795 | } |
4796 | } | |
9055360d AM |
4797 | this->end_branch_table_ = total; |
4798 | total = (total + 15) & -16; | |
4799 | total += this->ge_size_; | |
cf43a2fe AM |
4800 | |
4801 | this->set_data_size(total); | |
4802 | } | |
4803 | ||
590b87ff AM |
4804 | // Define symbols on stubs, identifying the stub. |
4805 | ||
4806 | template<int size, bool big_endian> | |
4807 | void | |
4808 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
4809 | { | |
4810 | if (!this->plt_call_stubs_.empty()) | |
4811 | { | |
4812 | // The key for the plt call stub hash table includes addresses, | |
4813 | // therefore traversal order depends on those addresses, which | |
4814 | // can change between runs if gold is a PIE. Unfortunately the | |
4815 | // output .symtab ordering depends on the order in which symbols | |
4816 | // are added to the linker symtab. We want reproducible output | |
4817 | // so must sort the call stub symbols. | |
4818 | typedef typename Plt_stub_entries::const_iterator plt_iter; | |
4819 | std::vector<plt_iter> sorted; | |
4820 | sorted.resize(this->plt_call_stubs_.size()); | |
4821 | ||
4822 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
4823 | cs != this->plt_call_stubs_.end(); | |
4824 | ++cs) | |
bdab445c | 4825 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
4826 | |
4827 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
4828 | { | |
4829 | plt_iter cs = sorted[i]; | |
4830 | char add[10]; | |
4831 | add[0] = 0; | |
4832 | if (cs->first.addend_ != 0) | |
4833 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
4834 | char obj[10]; |
4835 | obj[0] = 0; | |
4836 | if (cs->first.object_) | |
590b87ff AM |
4837 | { |
4838 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
4839 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
4840 | sprintf(obj, "%x:", ppcobj->uniq()); |
4841 | } | |
4842 | char localname[9]; | |
4843 | const char *symname; | |
4844 | if (cs->first.sym_ == NULL) | |
4845 | { | |
4846 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
4847 | symname = localname; |
4848 | } | |
4849 | else | |
4850 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
4851 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
4852 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
4853 | Address value |
4854 | = this->stub_address() - this->address() + cs->second.off_; | |
590b87ff AM |
4855 | unsigned int stub_size = this->plt_call_size(cs); |
4856 | this->targ_->define_local(symtab, name, this, value, stub_size); | |
4857 | } | |
4858 | } | |
4859 | ||
4860 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
4861 | for (branch_iter bs = this->long_branch_stubs_.begin(); | |
4862 | bs != this->long_branch_stubs_.end(); | |
4863 | ++bs) | |
4864 | { | |
4865 | if (bs->first.save_res_) | |
4866 | continue; | |
4867 | ||
4868 | char* name = new char[8 + 13 + 16 + 1]; | |
4869 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
4870 | static_cast<unsigned long long>(bs->first.dest_)); | |
4871 | Address value = (this->stub_address() - this->address() | |
4872 | + this->plt_size_ + bs->second); | |
4873 | unsigned int stub_size = this->branch_stub_size(bs); | |
4874 | this->targ_->define_local(symtab, name, this, value, stub_size); | |
4875 | } | |
4876 | } | |
4877 | ||
ec661b9d | 4878 | // Write out plt and long branch stub code. |
cf43a2fe AM |
4879 | |
4880 | template<int size, bool big_endian> | |
4881 | void | |
ec661b9d | 4882 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 4883 | { |
ec661b9d AM |
4884 | if (this->plt_call_stubs_.empty() |
4885 | && this->long_branch_stubs_.empty()) | |
4886 | return; | |
4887 | ||
4888 | const section_size_type start_off = this->offset(); | |
4889 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 4890 | const section_size_type oview_size = |
ec661b9d | 4891 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 4892 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 4893 | unsigned char* p; |
42cacb20 | 4894 | |
cf43a2fe AM |
4895 | if (size == 64) |
4896 | { | |
ec661b9d AM |
4897 | const Output_data_got_powerpc<size, big_endian>* got |
4898 | = this->targ_->got_section(); | |
dd93cd0a | 4899 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 4900 | |
ec661b9d | 4901 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 4902 | { |
ec661b9d AM |
4903 | // The base address of the .plt section. |
4904 | Address plt_base = this->targ_->plt_section()->address(); | |
4905 | Address iplt_base = invalid_address; | |
4906 | ||
4907 | // Write out plt call stubs. | |
4908 | typename Plt_stub_entries::const_iterator cs; | |
4909 | for (cs = this->plt_call_stubs_.begin(); | |
4910 | cs != this->plt_call_stubs_.end(); | |
4911 | ++cs) | |
e5d5f5ed | 4912 | { |
91c2b899 AM |
4913 | bool is_iplt; |
4914 | Address pltoff = this->plt_off(cs, &is_iplt); | |
9e69ed50 | 4915 | Address plt_addr = pltoff; |
91c2b899 | 4916 | if (is_iplt) |
ec661b9d AM |
4917 | { |
4918 | if (iplt_base == invalid_address) | |
4919 | iplt_base = this->targ_->iplt_section()->address(); | |
4920 | plt_addr += iplt_base; | |
4921 | } | |
4922 | else | |
4923 | plt_addr += plt_base; | |
4924 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
4925 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
4926 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 4927 | Address off = plt_addr - got_addr; |
ec661b9d | 4928 | |
9e69ed50 | 4929 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
4930 | gold_error(_("%s: linkage table error against `%s'"), |
4931 | cs->first.object_->name().c_str(), | |
4932 | cs->first.sym_->demangled_name().c_str()); | |
4933 | ||
b4f7960d AM |
4934 | bool plt_load_toc = this->targ_->abiversion() < 2; |
4935 | bool static_chain | |
4936 | = plt_load_toc && parameters->options().plt_static_chain(); | |
4937 | bool thread_safe | |
4938 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
4939 | bool use_fake_dep = false; |
4940 | Address cmp_branch_off = 0; | |
4941 | if (thread_safe) | |
4942 | { | |
4943 | unsigned int pltindex | |
4944 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
4945 | / this->targ_->plt_entry_size()); | |
4946 | Address glinkoff | |
4947 | = (this->targ_->glink_section()->pltresolve_size | |
4948 | + pltindex * 8); | |
4949 | if (pltindex > 32768) | |
4950 | glinkoff += (pltindex - 32768) * 4; | |
4951 | Address to | |
4952 | = this->targ_->glink_section()->address() + glinkoff; | |
4953 | Address from | |
7e57d19e AM |
4954 | = (this->stub_address() + cs->second.off_ + 20 |
4955 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
4956 | + 4 * (ha(off) != 0) |
4957 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
4958 | + 4 * static_chain); | |
4959 | cmp_branch_off = to - from; | |
4960 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
4961 | } | |
4962 | ||
bdab445c | 4963 | p = oview + cs->second.off_; |
9e69ed50 | 4964 | if (ha(off) != 0) |
ec661b9d | 4965 | { |
7e57d19e AM |
4966 | if (cs->second.r2save_) |
4967 | { | |
4968 | write_insn<big_endian>(p, | |
4969 | std_2_1 + this->targ_->stk_toc()); | |
4970 | p += 4; | |
4971 | } | |
397998fc AM |
4972 | if (plt_load_toc) |
4973 | { | |
4974 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
4975 | p += 4; | |
4976 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
4977 | p += 4; | |
4978 | } | |
4979 | else | |
4980 | { | |
4981 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
4982 | p += 4; | |
4983 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
4984 | p += 4; | |
4985 | } | |
b4f7960d AM |
4986 | if (plt_load_toc |
4987 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4988 | { |
b4f7960d AM |
4989 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
4990 | p += 4; | |
9e69ed50 | 4991 | off = 0; |
ec661b9d | 4992 | } |
b4f7960d AM |
4993 | write_insn<big_endian>(p, mtctr_12); |
4994 | p += 4; | |
4995 | if (plt_load_toc) | |
9e69ed50 | 4996 | { |
b4f7960d AM |
4997 | if (use_fake_dep) |
4998 | { | |
4999 | write_insn<big_endian>(p, xor_2_12_12); | |
5000 | p += 4; | |
5001 | write_insn<big_endian>(p, add_11_11_2); | |
5002 | p += 4; | |
5003 | } | |
5004 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
5005 | p += 4; | |
5006 | if (static_chain) | |
5007 | { | |
5008 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
5009 | p += 4; | |
5010 | } | |
9e69ed50 | 5011 | } |
ec661b9d AM |
5012 | } |
5013 | else | |
5014 | { | |
7e57d19e AM |
5015 | if (cs->second.r2save_) |
5016 | { | |
5017 | write_insn<big_endian>(p, | |
5018 | std_2_1 + this->targ_->stk_toc()); | |
5019 | p += 4; | |
5020 | } | |
b4f7960d AM |
5021 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
5022 | p += 4; | |
5023 | if (plt_load_toc | |
5024 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 5025 | { |
b4f7960d AM |
5026 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
5027 | p += 4; | |
9e69ed50 | 5028 | off = 0; |
ec661b9d | 5029 | } |
b4f7960d AM |
5030 | write_insn<big_endian>(p, mtctr_12); |
5031 | p += 4; | |
5032 | if (plt_load_toc) | |
9e69ed50 | 5033 | { |
b4f7960d AM |
5034 | if (use_fake_dep) |
5035 | { | |
5036 | write_insn<big_endian>(p, xor_11_12_12); | |
5037 | p += 4; | |
5038 | write_insn<big_endian>(p, add_2_2_11); | |
5039 | p += 4; | |
5040 | } | |
5041 | if (static_chain) | |
5042 | { | |
5043 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
5044 | p += 4; | |
5045 | } | |
5046 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
5047 | p += 4; | |
9e69ed50 | 5048 | } |
ec661b9d | 5049 | } |
9e69ed50 AM |
5050 | if (thread_safe && !use_fake_dep) |
5051 | { | |
b4f7960d AM |
5052 | write_insn<big_endian>(p, cmpldi_2_0); |
5053 | p += 4; | |
5054 | write_insn<big_endian>(p, bnectr_p4); | |
5055 | p += 4; | |
9e69ed50 AM |
5056 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
5057 | } | |
5058 | else | |
5059 | write_insn<big_endian>(p, bctr); | |
e5d5f5ed | 5060 | } |
ec661b9d AM |
5061 | } |
5062 | ||
5063 | // Write out long branch stubs. | |
5064 | typename Branch_stub_entries::const_iterator bs; | |
5065 | for (bs = this->long_branch_stubs_.begin(); | |
5066 | bs != this->long_branch_stubs_.end(); | |
5067 | ++bs) | |
5068 | { | |
d49044c7 AM |
5069 | if (bs->first.save_res_) |
5070 | continue; | |
ec661b9d AM |
5071 | p = oview + this->plt_size_ + bs->second; |
5072 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5073 | Address delta = bs->first.dest_ - loc; | |
5074 | if (delta + (1 << 25) < 2 << 25) | |
5075 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 5076 | else |
cf43a2fe | 5077 | { |
ec661b9d AM |
5078 | Address brlt_addr |
5079 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
5080 | gold_assert(brlt_addr != invalid_address); | |
5081 | brlt_addr += this->targ_->brlt_section()->address(); | |
5082 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
5083 | Address brltoff = brlt_addr - got_addr; | |
5084 | if (ha(brltoff) == 0) | |
5085 | { | |
b4f7960d | 5086 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
5087 | } |
5088 | else | |
cf43a2fe | 5089 | { |
397998fc AM |
5090 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
5091 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 5092 | } |
b4f7960d | 5093 | write_insn<big_endian>(p, mtctr_12), p += 4; |
ec661b9d | 5094 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 5095 | } |
ec661b9d AM |
5096 | } |
5097 | } | |
5098 | else | |
5099 | { | |
5100 | if (!this->plt_call_stubs_.empty()) | |
5101 | { | |
5102 | // The base address of the .plt section. | |
5103 | Address plt_base = this->targ_->plt_section()->address(); | |
5104 | Address iplt_base = invalid_address; | |
5105 | // The address of _GLOBAL_OFFSET_TABLE_. | |
5106 | Address g_o_t = invalid_address; | |
5107 | ||
5108 | // Write out plt call stubs. | |
5109 | typename Plt_stub_entries::const_iterator cs; | |
5110 | for (cs = this->plt_call_stubs_.begin(); | |
5111 | cs != this->plt_call_stubs_.end(); | |
5112 | ++cs) | |
cf43a2fe | 5113 | { |
91c2b899 AM |
5114 | bool is_iplt; |
5115 | Address plt_addr = this->plt_off(cs, &is_iplt); | |
5116 | if (is_iplt) | |
ec661b9d AM |
5117 | { |
5118 | if (iplt_base == invalid_address) | |
5119 | iplt_base = this->targ_->iplt_section()->address(); | |
5120 | plt_addr += iplt_base; | |
5121 | } | |
5122 | else | |
5123 | plt_addr += plt_base; | |
5124 | ||
bdab445c | 5125 | p = oview + cs->second.off_; |
ec661b9d AM |
5126 | if (parameters->options().output_is_position_independent()) |
5127 | { | |
5128 | Address got_addr; | |
5129 | const Powerpc_relobj<size, big_endian>* ppcobj | |
5130 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
5131 | (cs->first.object_)); | |
5132 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
5133 | { | |
5134 | unsigned int got2 = ppcobj->got2_shndx(); | |
5135 | got_addr = ppcobj->get_output_section_offset(got2); | |
5136 | gold_assert(got_addr != invalid_address); | |
5137 | got_addr += (ppcobj->output_section(got2)->address() | |
5138 | + cs->first.addend_); | |
5139 | } | |
5140 | else | |
5141 | { | |
5142 | if (g_o_t == invalid_address) | |
5143 | { | |
5144 | const Output_data_got_powerpc<size, big_endian>* got | |
5145 | = this->targ_->got_section(); | |
5146 | g_o_t = got->address() + got->g_o_t(); | |
5147 | } | |
5148 | got_addr = g_o_t; | |
5149 | } | |
5150 | ||
9e69ed50 AM |
5151 | Address off = plt_addr - got_addr; |
5152 | if (ha(off) == 0) | |
ec661b9d | 5153 | { |
9e69ed50 | 5154 | write_insn<big_endian>(p + 0, lwz_11_30 + l(off)); |
ec661b9d AM |
5155 | write_insn<big_endian>(p + 4, mtctr_11); |
5156 | write_insn<big_endian>(p + 8, bctr); | |
5157 | } | |
5158 | else | |
5159 | { | |
9e69ed50 AM |
5160 | write_insn<big_endian>(p + 0, addis_11_30 + ha(off)); |
5161 | write_insn<big_endian>(p + 4, lwz_11_11 + l(off)); | |
ec661b9d AM |
5162 | write_insn<big_endian>(p + 8, mtctr_11); |
5163 | write_insn<big_endian>(p + 12, bctr); | |
5164 | } | |
5165 | } | |
5166 | else | |
5167 | { | |
5168 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
5169 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
5170 | write_insn<big_endian>(p + 8, mtctr_11); | |
5171 | write_insn<big_endian>(p + 12, bctr); | |
5172 | } | |
5173 | } | |
5174 | } | |
5175 | ||
5176 | // Write out long branch stubs. | |
5177 | typename Branch_stub_entries::const_iterator bs; | |
5178 | for (bs = this->long_branch_stubs_.begin(); | |
5179 | bs != this->long_branch_stubs_.end(); | |
5180 | ++bs) | |
5181 | { | |
d49044c7 AM |
5182 | if (bs->first.save_res_) |
5183 | continue; | |
ec661b9d AM |
5184 | p = oview + this->plt_size_ + bs->second; |
5185 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5186 | Address delta = bs->first.dest_ - loc; | |
5187 | if (delta + (1 << 25) < 2 << 25) | |
5188 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
5189 | else if (!parameters->options().output_is_position_independent()) | |
5190 | { | |
5191 | write_insn<big_endian>(p + 0, lis_12 + ha(bs->first.dest_)); | |
5192 | write_insn<big_endian>(p + 4, addi_12_12 + l(bs->first.dest_)); | |
5193 | write_insn<big_endian>(p + 8, mtctr_12); | |
5194 | write_insn<big_endian>(p + 12, bctr); | |
5195 | } | |
5196 | else | |
5197 | { | |
5198 | delta -= 8; | |
5199 | write_insn<big_endian>(p + 0, mflr_0); | |
5200 | write_insn<big_endian>(p + 4, bcl_20_31); | |
5201 | write_insn<big_endian>(p + 8, mflr_12); | |
5202 | write_insn<big_endian>(p + 12, addis_12_12 + ha(delta)); | |
5203 | write_insn<big_endian>(p + 16, addi_12_12 + l(delta)); | |
5204 | write_insn<big_endian>(p + 20, mtlr_0); | |
5205 | write_insn<big_endian>(p + 24, mtctr_12); | |
5206 | write_insn<big_endian>(p + 28, bctr); | |
cf43a2fe AM |
5207 | } |
5208 | } | |
ec661b9d | 5209 | } |
d49044c7 AM |
5210 | if (this->need_save_res_) |
5211 | { | |
5212 | p = oview + this->plt_size_ + this->branch_size_; | |
5213 | memcpy (p, this->targ_->savres_section()->contents(), | |
5214 | this->targ_->savres_section()->data_size()); | |
5215 | } | |
ec661b9d AM |
5216 | } |
5217 | ||
5218 | // Write out .glink. | |
5219 | ||
5220 | template<int size, bool big_endian> | |
5221 | void | |
5222 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
5223 | { | |
5224 | const section_size_type off = this->offset(); | |
5225 | const section_size_type oview_size = | |
5226 | convert_to_section_size_type(this->data_size()); | |
5227 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5228 | unsigned char* p; | |
5229 | ||
5230 | // The base address of the .plt section. | |
5231 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
5232 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 5233 | |
ec661b9d AM |
5234 | if (size == 64) |
5235 | { | |
9055360d | 5236 | if (this->end_branch_table_ != 0) |
b4f7960d | 5237 | { |
9055360d AM |
5238 | // Write pltresolve stub. |
5239 | p = oview; | |
5240 | Address after_bcl = this->address() + 16; | |
5241 | Address pltoff = plt_base - after_bcl; | |
5242 | ||
5243 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 5244 | |
b4f7960d | 5245 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 5246 | { |
9055360d AM |
5247 | write_insn<big_endian>(p, mflr_12), p += 4; |
5248 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5249 | write_insn<big_endian>(p, mflr_11), p += 4; | |
5250 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
5251 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
5252 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5253 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5254 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
5255 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5256 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
5257 | } | |
5258 | else | |
5259 | { | |
5260 | write_insn<big_endian>(p, mflr_0), p += 4; | |
5261 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5262 | write_insn<big_endian>(p, mflr_11), p += 4; | |
7ee7ff70 | 5263 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; |
9055360d AM |
5264 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; |
5265 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
5266 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
5267 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5268 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
5269 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5270 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
5271 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5272 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
5273 | } | |
5274 | write_insn<big_endian>(p, bctr), p += 4; | |
5275 | while (p < oview + this->pltresolve_size) | |
5276 | write_insn<big_endian>(p, nop), p += 4; | |
5277 | ||
5278 | // Write lazy link call stubs. | |
5279 | uint32_t indx = 0; | |
5280 | while (p < oview + this->end_branch_table_) | |
5281 | { | |
5282 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 5283 | { |
9055360d AM |
5284 | if (indx < 0x8000) |
5285 | { | |
5286 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
5287 | } | |
5288 | else | |
5289 | { | |
bbec1a5d | 5290 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
5291 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
5292 | } | |
b4f7960d | 5293 | } |
9055360d AM |
5294 | uint32_t branch_off = 8 - (p - oview); |
5295 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
5296 | indx++; | |
cf43a2fe | 5297 | } |
9055360d AM |
5298 | } |
5299 | ||
5300 | Address plt_base = this->targ_->plt_section()->address(); | |
5301 | Address iplt_base = invalid_address; | |
5302 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
5303 | Address global_entry_base = this->address() + global_entry_off; | |
5304 | typename Global_entry_stub_entries::const_iterator ge; | |
5305 | for (ge = this->global_entry_stubs_.begin(); | |
5306 | ge != this->global_entry_stubs_.end(); | |
5307 | ++ge) | |
5308 | { | |
5309 | p = oview + global_entry_off + ge->second; | |
5310 | Address plt_addr = ge->first->plt_offset(); | |
5311 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
5312 | && ge->first->can_use_relative_reloc(false)) | |
5313 | { | |
5314 | if (iplt_base == invalid_address) | |
5315 | iplt_base = this->targ_->iplt_section()->address(); | |
5316 | plt_addr += iplt_base; | |
5317 | } | |
5318 | else | |
5319 | plt_addr += plt_base; | |
5320 | Address my_addr = global_entry_base + ge->second; | |
5321 | Address off = plt_addr - my_addr; | |
5322 | ||
5323 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
5324 | gold_error(_("%s: linkage table error against `%s'"), | |
5325 | ge->first->object()->name().c_str(), | |
5326 | ge->first->demangled_name().c_str()); | |
5327 | ||
5328 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
5329 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
5330 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5331 | write_insn<big_endian>(p, bctr); | |
cf43a2fe AM |
5332 | } |
5333 | } | |
5334 | else | |
5335 | { | |
ec661b9d AM |
5336 | const Output_data_got_powerpc<size, big_endian>* got |
5337 | = this->targ_->got_section(); | |
dd93cd0a AM |
5338 | // The address of _GLOBAL_OFFSET_TABLE_. |
5339 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 5340 | |
cf43a2fe | 5341 | // Write out pltresolve branch table. |
ec661b9d | 5342 | p = oview; |
cf43a2fe | 5343 | unsigned int the_end = oview_size - this->pltresolve_size; |
c9269dff | 5344 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
5345 | while (p < end_p - 8 * 4) |
5346 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
5347 | while (p < end_p) | |
5348 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 5349 | |
cf43a2fe AM |
5350 | // Write out pltresolve call stub. |
5351 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 5352 | { |
ec661b9d | 5353 | Address res0_off = 0; |
dd93cd0a AM |
5354 | Address after_bcl_off = the_end + 12; |
5355 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
5356 | |
5357 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
5358 | write_insn<big_endian>(p + 4, mflr_0); | |
5359 | write_insn<big_endian>(p + 8, bcl_20_31); | |
5360 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
5361 | write_insn<big_endian>(p + 16, mflr_12); | |
5362 | write_insn<big_endian>(p + 20, mtlr_0); | |
5363 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
5364 | ||
dd93cd0a | 5365 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
5366 | |
5367 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
5368 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
5369 | { | |
5370 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
5371 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
5372 | } | |
5373 | else | |
5374 | { | |
5375 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
5376 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
5377 | } | |
5378 | write_insn<big_endian>(p + 40, mtctr_0); | |
5379 | write_insn<big_endian>(p + 44, add_0_11_11); | |
5380 | write_insn<big_endian>(p + 48, add_11_0_11); | |
5381 | write_insn<big_endian>(p + 52, bctr); | |
5382 | write_insn<big_endian>(p + 56, nop); | |
5383 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 5384 | } |
cf43a2fe | 5385 | else |
42cacb20 | 5386 | { |
ec661b9d | 5387 | Address res0 = this->address(); |
cf43a2fe AM |
5388 | |
5389 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
5390 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
5391 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
5392 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
5393 | else | |
5394 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
5395 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
5396 | write_insn<big_endian>(p + 16, mtctr_0); | |
5397 | write_insn<big_endian>(p + 20, add_0_11_11); | |
5398 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
5399 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
5400 | else | |
5401 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
5402 | write_insn<big_endian>(p + 28, add_11_0_11); | |
5403 | write_insn<big_endian>(p + 32, bctr); | |
5404 | write_insn<big_endian>(p + 36, nop); | |
5405 | write_insn<big_endian>(p + 40, nop); | |
5406 | write_insn<big_endian>(p + 44, nop); | |
5407 | write_insn<big_endian>(p + 48, nop); | |
5408 | write_insn<big_endian>(p + 52, nop); | |
5409 | write_insn<big_endian>(p + 56, nop); | |
5410 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 5411 | } |
cf43a2fe | 5412 | p += 64; |
42cacb20 DE |
5413 | } |
5414 | ||
cf43a2fe AM |
5415 | of->write_output_view(off, oview_size, oview); |
5416 | } | |
5417 | ||
f3a0ed29 AM |
5418 | |
5419 | // A class to handle linker generated save/restore functions. | |
5420 | ||
5421 | template<int size, bool big_endian> | |
5422 | class Output_data_save_res : public Output_section_data_build | |
5423 | { | |
5424 | public: | |
5425 | Output_data_save_res(Symbol_table* symtab); | |
5426 | ||
d49044c7 AM |
5427 | const unsigned char* |
5428 | contents() const | |
5429 | { | |
5430 | return contents_; | |
5431 | } | |
5432 | ||
f3a0ed29 AM |
5433 | protected: |
5434 | // Write to a map file. | |
5435 | void | |
5436 | do_print_to_mapfile(Mapfile* mapfile) const | |
5437 | { mapfile->print_output_data(this, _("** save/restore")); } | |
5438 | ||
5439 | void | |
5440 | do_write(Output_file*); | |
5441 | ||
5442 | private: | |
5443 | // The maximum size of save/restore contents. | |
5444 | static const unsigned int savres_max = 218*4; | |
5445 | ||
5446 | void | |
5447 | savres_define(Symbol_table* symtab, | |
5448 | const char *name, | |
5449 | unsigned int lo, unsigned int hi, | |
5450 | unsigned char* write_ent(unsigned char*, int), | |
5451 | unsigned char* write_tail(unsigned char*, int)); | |
5452 | ||
5453 | unsigned char *contents_; | |
5454 | }; | |
5455 | ||
5456 | template<bool big_endian> | |
5457 | static unsigned char* | |
5458 | savegpr0(unsigned char* p, int r) | |
5459 | { | |
5460 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5461 | write_insn<big_endian>(p, insn); | |
5462 | return p + 4; | |
5463 | } | |
5464 | ||
5465 | template<bool big_endian> | |
5466 | static unsigned char* | |
5467 | savegpr0_tail(unsigned char* p, int r) | |
5468 | { | |
5469 | p = savegpr0<big_endian>(p, r); | |
5470 | uint32_t insn = std_0_1 + 16; | |
5471 | write_insn<big_endian>(p, insn); | |
5472 | p = p + 4; | |
5473 | write_insn<big_endian>(p, blr); | |
5474 | return p + 4; | |
5475 | } | |
5476 | ||
5477 | template<bool big_endian> | |
62fe925a | 5478 | static unsigned char* |
f3a0ed29 AM |
5479 | restgpr0(unsigned char* p, int r) |
5480 | { | |
5481 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5482 | write_insn<big_endian>(p, insn); | |
5483 | return p + 4; | |
5484 | } | |
5485 | ||
5486 | template<bool big_endian> | |
62fe925a | 5487 | static unsigned char* |
f3a0ed29 AM |
5488 | restgpr0_tail(unsigned char* p, int r) |
5489 | { | |
5490 | uint32_t insn = ld_0_1 + 16; | |
5491 | write_insn<big_endian>(p, insn); | |
5492 | p = p + 4; | |
5493 | p = restgpr0<big_endian>(p, r); | |
5494 | write_insn<big_endian>(p, mtlr_0); | |
5495 | p = p + 4; | |
5496 | if (r == 29) | |
5497 | { | |
5498 | p = restgpr0<big_endian>(p, 30); | |
5499 | p = restgpr0<big_endian>(p, 31); | |
5500 | } | |
5501 | write_insn<big_endian>(p, blr); | |
5502 | return p + 4; | |
5503 | } | |
5504 | ||
5505 | template<bool big_endian> | |
62fe925a | 5506 | static unsigned char* |
f3a0ed29 AM |
5507 | savegpr1(unsigned char* p, int r) |
5508 | { | |
5509 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5510 | write_insn<big_endian>(p, insn); | |
5511 | return p + 4; | |
5512 | } | |
5513 | ||
5514 | template<bool big_endian> | |
62fe925a | 5515 | static unsigned char* |
f3a0ed29 AM |
5516 | savegpr1_tail(unsigned char* p, int r) |
5517 | { | |
5518 | p = savegpr1<big_endian>(p, r); | |
5519 | write_insn<big_endian>(p, blr); | |
5520 | return p + 4; | |
5521 | } | |
5522 | ||
5523 | template<bool big_endian> | |
62fe925a | 5524 | static unsigned char* |
f3a0ed29 AM |
5525 | restgpr1(unsigned char* p, int r) |
5526 | { | |
5527 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5528 | write_insn<big_endian>(p, insn); | |
5529 | return p + 4; | |
5530 | } | |
5531 | ||
5532 | template<bool big_endian> | |
62fe925a | 5533 | static unsigned char* |
f3a0ed29 AM |
5534 | restgpr1_tail(unsigned char* p, int r) |
5535 | { | |
5536 | p = restgpr1<big_endian>(p, r); | |
5537 | write_insn<big_endian>(p, blr); | |
5538 | return p + 4; | |
5539 | } | |
5540 | ||
5541 | template<bool big_endian> | |
62fe925a | 5542 | static unsigned char* |
f3a0ed29 AM |
5543 | savefpr(unsigned char* p, int r) |
5544 | { | |
5545 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5546 | write_insn<big_endian>(p, insn); | |
5547 | return p + 4; | |
5548 | } | |
5549 | ||
5550 | template<bool big_endian> | |
62fe925a | 5551 | static unsigned char* |
f3a0ed29 AM |
5552 | savefpr0_tail(unsigned char* p, int r) |
5553 | { | |
5554 | p = savefpr<big_endian>(p, r); | |
5555 | write_insn<big_endian>(p, std_0_1 + 16); | |
5556 | p = p + 4; | |
5557 | write_insn<big_endian>(p, blr); | |
5558 | return p + 4; | |
5559 | } | |
5560 | ||
5561 | template<bool big_endian> | |
62fe925a | 5562 | static unsigned char* |
f3a0ed29 AM |
5563 | restfpr(unsigned char* p, int r) |
5564 | { | |
5565 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5566 | write_insn<big_endian>(p, insn); | |
5567 | return p + 4; | |
5568 | } | |
5569 | ||
5570 | template<bool big_endian> | |
62fe925a | 5571 | static unsigned char* |
f3a0ed29 AM |
5572 | restfpr0_tail(unsigned char* p, int r) |
5573 | { | |
5574 | write_insn<big_endian>(p, ld_0_1 + 16); | |
5575 | p = p + 4; | |
5576 | p = restfpr<big_endian>(p, r); | |
5577 | write_insn<big_endian>(p, mtlr_0); | |
5578 | p = p + 4; | |
5579 | if (r == 29) | |
5580 | { | |
5581 | p = restfpr<big_endian>(p, 30); | |
5582 | p = restfpr<big_endian>(p, 31); | |
5583 | } | |
5584 | write_insn<big_endian>(p, blr); | |
5585 | return p + 4; | |
5586 | } | |
5587 | ||
5588 | template<bool big_endian> | |
62fe925a | 5589 | static unsigned char* |
f3a0ed29 AM |
5590 | savefpr1_tail(unsigned char* p, int r) |
5591 | { | |
5592 | p = savefpr<big_endian>(p, r); | |
5593 | write_insn<big_endian>(p, blr); | |
5594 | return p + 4; | |
5595 | } | |
5596 | ||
5597 | template<bool big_endian> | |
62fe925a | 5598 | static unsigned char* |
f3a0ed29 AM |
5599 | restfpr1_tail(unsigned char* p, int r) |
5600 | { | |
5601 | p = restfpr<big_endian>(p, r); | |
5602 | write_insn<big_endian>(p, blr); | |
5603 | return p + 4; | |
5604 | } | |
5605 | ||
5606 | template<bool big_endian> | |
62fe925a | 5607 | static unsigned char* |
f3a0ed29 AM |
5608 | savevr(unsigned char* p, int r) |
5609 | { | |
5610 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5611 | write_insn<big_endian>(p, insn); | |
5612 | p = p + 4; | |
5613 | insn = stvx_0_12_0 + (r << 21); | |
5614 | write_insn<big_endian>(p, insn); | |
5615 | return p + 4; | |
5616 | } | |
5617 | ||
5618 | template<bool big_endian> | |
62fe925a | 5619 | static unsigned char* |
f3a0ed29 AM |
5620 | savevr_tail(unsigned char* p, int r) |
5621 | { | |
5622 | p = savevr<big_endian>(p, r); | |
5623 | write_insn<big_endian>(p, blr); | |
5624 | return p + 4; | |
5625 | } | |
5626 | ||
5627 | template<bool big_endian> | |
62fe925a | 5628 | static unsigned char* |
f3a0ed29 AM |
5629 | restvr(unsigned char* p, int r) |
5630 | { | |
5631 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5632 | write_insn<big_endian>(p, insn); | |
5633 | p = p + 4; | |
5634 | insn = lvx_0_12_0 + (r << 21); | |
5635 | write_insn<big_endian>(p, insn); | |
5636 | return p + 4; | |
5637 | } | |
5638 | ||
5639 | template<bool big_endian> | |
62fe925a | 5640 | static unsigned char* |
f3a0ed29 AM |
5641 | restvr_tail(unsigned char* p, int r) |
5642 | { | |
5643 | p = restvr<big_endian>(p, r); | |
5644 | write_insn<big_endian>(p, blr); | |
5645 | return p + 4; | |
5646 | } | |
5647 | ||
5648 | ||
5649 | template<int size, bool big_endian> | |
5650 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
5651 | Symbol_table* symtab) | |
5652 | : Output_section_data_build(4), | |
5653 | contents_(NULL) | |
5654 | { | |
5655 | this->savres_define(symtab, | |
5656 | "_savegpr0_", 14, 31, | |
5657 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
5658 | this->savres_define(symtab, | |
5659 | "_restgpr0_", 14, 29, | |
5660 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5661 | this->savres_define(symtab, | |
5662 | "_restgpr0_", 30, 31, | |
5663 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5664 | this->savres_define(symtab, | |
5665 | "_savegpr1_", 14, 31, | |
5666 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
5667 | this->savres_define(symtab, | |
5668 | "_restgpr1_", 14, 31, | |
5669 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
5670 | this->savres_define(symtab, | |
5671 | "_savefpr_", 14, 31, | |
5672 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
5673 | this->savres_define(symtab, | |
5674 | "_restfpr_", 14, 29, | |
5675 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5676 | this->savres_define(symtab, | |
5677 | "_restfpr_", 30, 31, | |
5678 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5679 | this->savres_define(symtab, | |
5680 | "._savef", 14, 31, | |
5681 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
5682 | this->savres_define(symtab, | |
5683 | "._restf", 14, 31, | |
5684 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
5685 | this->savres_define(symtab, | |
5686 | "_savevr_", 20, 31, | |
5687 | savevr<big_endian>, savevr_tail<big_endian>); | |
5688 | this->savres_define(symtab, | |
5689 | "_restvr_", 20, 31, | |
5690 | restvr<big_endian>, restvr_tail<big_endian>); | |
5691 | } | |
5692 | ||
5693 | template<int size, bool big_endian> | |
5694 | void | |
5695 | Output_data_save_res<size, big_endian>::savres_define( | |
5696 | Symbol_table* symtab, | |
5697 | const char *name, | |
5698 | unsigned int lo, unsigned int hi, | |
5699 | unsigned char* write_ent(unsigned char*, int), | |
5700 | unsigned char* write_tail(unsigned char*, int)) | |
5701 | { | |
5702 | size_t len = strlen(name); | |
5703 | bool writing = false; | |
5704 | char sym[16]; | |
5705 | ||
5706 | memcpy(sym, name, len); | |
5707 | sym[len + 2] = 0; | |
5708 | ||
5709 | for (unsigned int i = lo; i <= hi; i++) | |
5710 | { | |
5711 | sym[len + 0] = i / 10 + '0'; | |
5712 | sym[len + 1] = i % 10 + '0'; | |
5713 | Symbol* gsym = symtab->lookup(sym); | |
5714 | bool refd = gsym != NULL && gsym->is_undefined(); | |
5715 | writing = writing || refd; | |
5716 | if (writing) | |
5717 | { | |
5718 | if (this->contents_ == NULL) | |
5719 | this->contents_ = new unsigned char[this->savres_max]; | |
5720 | ||
ec661b9d | 5721 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
5722 | unsigned char* p = this->contents_ + value; |
5723 | if (i != hi) | |
5724 | p = write_ent(p, i); | |
5725 | else | |
5726 | p = write_tail(p, i); | |
ec661b9d | 5727 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
5728 | this->set_current_data_size(cur_size); |
5729 | if (refd) | |
5730 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
5731 | this, value, cur_size - value, | |
5732 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
5733 | elfcpp::STV_HIDDEN, 0, false, false); | |
5734 | } | |
5735 | } | |
5736 | } | |
5737 | ||
5738 | // Write out save/restore. | |
5739 | ||
5740 | template<int size, bool big_endian> | |
5741 | void | |
5742 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
5743 | { | |
ec661b9d | 5744 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
5745 | const section_size_type oview_size = |
5746 | convert_to_section_size_type(this->data_size()); | |
5747 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5748 | memcpy(oview, this->contents_, oview_size); | |
5749 | of->write_output_view(off, oview_size, oview); | |
5750 | } | |
5751 | ||
5752 | ||
cf43a2fe | 5753 | // Create the glink section. |
42cacb20 | 5754 | |
cf43a2fe AM |
5755 | template<int size, bool big_endian> |
5756 | void | |
5757 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
5758 | { | |
5759 | if (this->glink_ == NULL) | |
5760 | { | |
5761 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 5762 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
5763 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
5764 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
5765 | this->glink_, ORDER_TEXT, false); | |
5766 | } | |
42cacb20 DE |
5767 | } |
5768 | ||
5769 | // Create a PLT entry for a global symbol. | |
5770 | ||
5771 | template<int size, bool big_endian> | |
5772 | void | |
ec661b9d AM |
5773 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
5774 | Layout* layout, | |
5775 | Symbol* gsym) | |
42cacb20 | 5776 | { |
e5d5f5ed AM |
5777 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
5778 | && gsym->can_use_relative_reloc(false)) | |
5779 | { | |
5780 | if (this->iplt_ == NULL) | |
40b469d7 | 5781 | this->make_iplt_section(symtab, layout); |
03e25981 | 5782 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
5783 | } |
5784 | else | |
5785 | { | |
5786 | if (this->plt_ == NULL) | |
40b469d7 | 5787 | this->make_plt_section(symtab, layout); |
03e25981 | 5788 | this->plt_->add_entry(gsym); |
e5d5f5ed | 5789 | } |
e5d5f5ed | 5790 | } |
42cacb20 | 5791 | |
e5d5f5ed | 5792 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 5793 | |
e5d5f5ed AM |
5794 | template<int size, bool big_endian> |
5795 | void | |
5796 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 5797 | Symbol_table* symtab, |
e5d5f5ed | 5798 | Layout* layout, |
ec661b9d AM |
5799 | Sized_relobj_file<size, big_endian>* relobj, |
5800 | unsigned int r_sym) | |
e5d5f5ed AM |
5801 | { |
5802 | if (this->iplt_ == NULL) | |
40b469d7 | 5803 | this->make_iplt_section(symtab, layout); |
03e25981 | 5804 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
5805 | } |
5806 | ||
0e70b911 CC |
5807 | // Return the number of entries in the PLT. |
5808 | ||
5809 | template<int size, bool big_endian> | |
5810 | unsigned int | |
5811 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
5812 | { | |
5813 | if (this->plt_ == NULL) | |
5814 | return 0; | |
b3ccdeb5 | 5815 | return this->plt_->entry_count(); |
0e70b911 CC |
5816 | } |
5817 | ||
dd93cd0a | 5818 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
5819 | |
5820 | template<int size, bool big_endian> | |
5821 | unsigned int | |
dd93cd0a | 5822 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
5823 | Symbol_table* symtab, |
5824 | Layout* layout, | |
5825 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 5826 | { |
dd93cd0a | 5827 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
5828 | { |
5829 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
5830 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
5831 | Output_data_got_powerpc<size, big_endian>* got |
5832 | = this->got_section(symtab, layout); | |
5833 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
5834 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
5835 | got_offset, 0); | |
dd93cd0a | 5836 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 5837 | } |
dd93cd0a | 5838 | return this->tlsld_got_offset_; |
42cacb20 DE |
5839 | } |
5840 | ||
95a2c8d6 RS |
5841 | // Get the Reference_flags for a particular relocation. |
5842 | ||
5843 | template<int size, bool big_endian> | |
5844 | int | |
88b8e639 AM |
5845 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
5846 | unsigned int r_type, | |
5847 | const Target_powerpc* target) | |
95a2c8d6 | 5848 | { |
88b8e639 AM |
5849 | int ref = 0; |
5850 | ||
95a2c8d6 RS |
5851 | switch (r_type) |
5852 | { | |
5853 | case elfcpp::R_POWERPC_NONE: | |
5854 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5855 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
5856 | case elfcpp::R_PPC64_TOC: | |
5857 | // No symbol reference. | |
88b8e639 | 5858 | break; |
95a2c8d6 | 5859 | |
dd93cd0a AM |
5860 | case elfcpp::R_PPC64_ADDR64: |
5861 | case elfcpp::R_PPC64_UADDR64: | |
5862 | case elfcpp::R_POWERPC_ADDR32: | |
5863 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 5864 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 5865 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
5866 | case elfcpp::R_POWERPC_ADDR16_LO: |
5867 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5868 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
5869 | ref = Symbol::ABSOLUTE_REF; |
5870 | break; | |
95a2c8d6 | 5871 | |
dd93cd0a AM |
5872 | case elfcpp::R_POWERPC_ADDR24: |
5873 | case elfcpp::R_POWERPC_ADDR14: | |
5874 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5875 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
5876 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
5877 | break; | |
dd93cd0a | 5878 | |
e5d5f5ed | 5879 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 5880 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 5881 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
5882 | case elfcpp::R_POWERPC_REL16: |
5883 | case elfcpp::R_POWERPC_REL16_LO: | |
5884 | case elfcpp::R_POWERPC_REL16_HI: | |
5885 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
5886 | ref = Symbol::RELATIVE_REF; |
5887 | break; | |
95a2c8d6 | 5888 | |
dd93cd0a | 5889 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 5890 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
5891 | case elfcpp::R_POWERPC_REL14: |
5892 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5893 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
5894 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
5895 | break; | |
95a2c8d6 RS |
5896 | |
5897 | case elfcpp::R_POWERPC_GOT16: | |
5898 | case elfcpp::R_POWERPC_GOT16_LO: | |
5899 | case elfcpp::R_POWERPC_GOT16_HI: | |
5900 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
5901 | case elfcpp::R_PPC64_GOT16_DS: |
5902 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
5903 | case elfcpp::R_PPC64_TOC16: |
5904 | case elfcpp::R_PPC64_TOC16_LO: | |
5905 | case elfcpp::R_PPC64_TOC16_HI: | |
5906 | case elfcpp::R_PPC64_TOC16_HA: | |
5907 | case elfcpp::R_PPC64_TOC16_DS: | |
5908 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
32d849b3 | 5909 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 5910 | break; |
95a2c8d6 RS |
5911 | |
5912 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5913 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
5914 | ref = Symbol::TLS_REF; |
5915 | break; | |
95a2c8d6 RS |
5916 | |
5917 | case elfcpp::R_POWERPC_COPY: | |
5918 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5919 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5920 | case elfcpp::R_POWERPC_RELATIVE: | |
5921 | case elfcpp::R_POWERPC_DTPMOD: | |
5922 | default: | |
5923 | // Not expected. We will give an error later. | |
88b8e639 | 5924 | break; |
95a2c8d6 | 5925 | } |
88b8e639 AM |
5926 | |
5927 | if (size == 64 && target->abiversion() < 2) | |
5928 | ref |= Symbol::FUNC_DESC_ABI; | |
5929 | return ref; | |
95a2c8d6 RS |
5930 | } |
5931 | ||
42cacb20 DE |
5932 | // Report an unsupported relocation against a local symbol. |
5933 | ||
5934 | template<int size, bool big_endian> | |
5935 | void | |
5936 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
5937 | Sized_relobj_file<size, big_endian>* object, |
5938 | unsigned int r_type) | |
42cacb20 DE |
5939 | { |
5940 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
5941 | object->name().c_str(), r_type); | |
5942 | } | |
5943 | ||
5944 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
5945 | // dynamic linker does not support it, issue an error. | |
5946 | ||
5947 | template<int size, bool big_endian> | |
5948 | void | |
5949 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
5950 | unsigned int r_type) | |
5951 | { | |
5952 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
5953 | ||
5954 | // These are the relocation types supported by glibc for both 32-bit | |
5955 | // and 64-bit powerpc. | |
5956 | switch (r_type) | |
5957 | { | |
3ea0a085 | 5958 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
5959 | case elfcpp::R_POWERPC_RELATIVE: |
5960 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5961 | case elfcpp::R_POWERPC_DTPMOD: | |
5962 | case elfcpp::R_POWERPC_DTPREL: | |
5963 | case elfcpp::R_POWERPC_TPREL: | |
5964 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5965 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 5966 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 5967 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 5968 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 5969 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
5970 | case elfcpp::R_POWERPC_ADDR16: |
5971 | case elfcpp::R_POWERPC_UADDR16: | |
5972 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5973 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5974 | case elfcpp::R_POWERPC_ADDR16_HA: | |
5975 | case elfcpp::R_POWERPC_ADDR14: | |
5976 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5977 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5978 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 5979 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
5980 | case elfcpp::R_POWERPC_TPREL16: |
5981 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5982 | case elfcpp::R_POWERPC_TPREL16_HI: | |
5983 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
5984 | return; |
5985 | ||
5986 | default: | |
5987 | break; | |
5988 | } | |
5989 | ||
5990 | if (size == 64) | |
5991 | { | |
5992 | switch (r_type) | |
5993 | { | |
5994 | // These are the relocation types supported only on 64-bit. | |
5995 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 5996 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 5997 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 5998 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 5999 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
6000 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6001 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
6002 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6003 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6004 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6005 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 6006 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
6007 | case elfcpp::R_POWERPC_ADDR30: |
6008 | case elfcpp::R_PPC64_TPREL16_DS: | |
6009 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6010 | case elfcpp::R_PPC64_TPREL16_HIGH: |
6011 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
6012 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
6013 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
6014 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
6015 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
6016 | return; |
6017 | ||
6018 | default: | |
6019 | break; | |
6020 | } | |
6021 | } | |
6022 | else | |
6023 | { | |
6024 | switch (r_type) | |
6025 | { | |
6026 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
6027 | // ??? glibc ld.so doesn't need to support these. |
6028 | case elfcpp::R_POWERPC_DTPREL16: | |
6029 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6030 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6031 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
6032 | return; | |
42cacb20 DE |
6033 | |
6034 | default: | |
6035 | break; | |
6036 | } | |
6037 | } | |
6038 | ||
6039 | // This prevents us from issuing more than one error per reloc | |
6040 | // section. But we can still wind up issuing more than one | |
6041 | // error per object file. | |
6042 | if (this->issued_non_pic_error_) | |
6043 | return; | |
33aea2fd | 6044 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
6045 | object->error(_("requires unsupported dynamic reloc; " |
6046 | "recompile with -fPIC")); | |
6047 | this->issued_non_pic_error_ = true; | |
6048 | return; | |
6049 | } | |
6050 | ||
e5d5f5ed AM |
6051 | // Return whether we need to make a PLT entry for a relocation of the |
6052 | // given type against a STT_GNU_IFUNC symbol. | |
6053 | ||
6054 | template<int size, bool big_endian> | |
6055 | bool | |
6056 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 6057 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 6058 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
6059 | unsigned int r_type, |
6060 | bool report_err) | |
e5d5f5ed | 6061 | { |
c9824451 AM |
6062 | // In non-pic code any reference will resolve to the plt call stub |
6063 | // for the ifunc symbol. | |
9055360d AM |
6064 | if ((size == 32 || target->abiversion() >= 2) |
6065 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
6066 | return true; |
6067 | ||
e5d5f5ed AM |
6068 | switch (r_type) |
6069 | { | |
b3ccdeb5 | 6070 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
6071 | case elfcpp::R_POWERPC_ADDR32: |
6072 | case elfcpp::R_POWERPC_UADDR32: | |
6073 | if (size == 32) | |
b3ccdeb5 | 6074 | return false; |
e5d5f5ed AM |
6075 | break; |
6076 | ||
6077 | case elfcpp::R_PPC64_ADDR64: | |
6078 | case elfcpp::R_PPC64_UADDR64: | |
6079 | if (size == 64) | |
b3ccdeb5 | 6080 | return false; |
e5d5f5ed AM |
6081 | break; |
6082 | ||
b3ccdeb5 | 6083 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
6084 | case elfcpp::R_POWERPC_GOT16: |
6085 | case elfcpp::R_POWERPC_GOT16_LO: | |
6086 | case elfcpp::R_POWERPC_GOT16_HI: | |
6087 | case elfcpp::R_POWERPC_GOT16_HA: | |
6088 | case elfcpp::R_PPC64_GOT16_DS: | |
6089 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 6090 | return false; |
e5d5f5ed | 6091 | |
b3ccdeb5 | 6092 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
6093 | case elfcpp::R_POWERPC_ADDR24: |
6094 | case elfcpp::R_POWERPC_ADDR14: | |
6095 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6096 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
6097 | case elfcpp::R_POWERPC_REL24: | |
6098 | case elfcpp::R_PPC_PLTREL24: | |
6099 | case elfcpp::R_POWERPC_REL14: | |
6100 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6101 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
6102 | return true; | |
6103 | ||
6104 | default: | |
6105 | break; | |
6106 | } | |
6107 | ||
6108 | // Anything else is a problem. | |
6109 | // If we are building a static executable, the libc startup function | |
6110 | // responsible for applying indirect function relocations is going | |
6111 | // to complain about the reloc type. | |
6112 | // If we are building a dynamic executable, we will have a text | |
6113 | // relocation. The dynamic loader will set the text segment | |
6114 | // writable and non-executable to apply text relocations. So we'll | |
6115 | // segfault when trying to run the indirection function to resolve | |
6116 | // the reloc. | |
b3ccdeb5 AM |
6117 | if (report_err) |
6118 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
6119 | object->name().c_str(), r_type); |
6120 | return false; | |
6121 | } | |
6122 | ||
5edad15d AM |
6123 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6124 | // reloc. | |
6125 | ||
6126 | static bool | |
6127 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
6128 | { | |
6129 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
6130 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6131 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6132 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6133 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6134 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6135 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6136 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6137 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6138 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6139 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6140 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6141 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6142 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6143 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6144 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
6145 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
6146 | /* Exclude lfqu by testing reloc. If relocs are ever | |
6147 | defined for the reduced D field in psq_lu then those | |
6148 | will need testing too. */ | |
6149 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6150 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6151 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
6152 | && (insn & 1) == 0) | |
6153 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
6154 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
6155 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
6156 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6157 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6158 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
6159 | && (insn & 1) == 0)); | |
6160 | } | |
6161 | ||
42cacb20 DE |
6162 | // Scan a relocation for a local symbol. |
6163 | ||
6164 | template<int size, bool big_endian> | |
6165 | inline void | |
6166 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
6167 | Symbol_table* symtab, |
6168 | Layout* layout, | |
6169 | Target_powerpc<size, big_endian>* target, | |
6170 | Sized_relobj_file<size, big_endian>* object, | |
6171 | unsigned int data_shndx, | |
6172 | Output_section* output_section, | |
6173 | const elfcpp::Rela<size, big_endian>& reloc, | |
6174 | unsigned int r_type, | |
e5d5f5ed | 6175 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 6176 | bool is_discarded) |
42cacb20 | 6177 | { |
e3deeb9c AM |
6178 | this->maybe_skip_tls_get_addr_call(r_type, NULL); |
6179 | ||
6180 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
6181 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
6182 | { | |
6183 | this->expect_tls_get_addr_call(); | |
6184 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6185 | if (tls_type != tls::TLSOPT_NONE) | |
6186 | this->skip_next_tls_get_addr_call(); | |
6187 | } | |
6188 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
6189 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
6190 | { | |
6191 | this->expect_tls_get_addr_call(); | |
6192 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6193 | if (tls_type != tls::TLSOPT_NONE) | |
6194 | this->skip_next_tls_get_addr_call(); | |
6195 | } | |
6196 | ||
dd93cd0a AM |
6197 | Powerpc_relobj<size, big_endian>* ppc_object |
6198 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6199 | ||
bfdfa4cd AM |
6200 | if (is_discarded) |
6201 | { | |
6202 | if (size == 64 | |
6203 | && data_shndx == ppc_object->opd_shndx() | |
6204 | && r_type == elfcpp::R_PPC64_ADDR64) | |
6205 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
6206 | return; | |
6207 | } | |
6208 | ||
e5d5f5ed AM |
6209 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
6210 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 6211 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 6212 | { |
ec661b9d AM |
6213 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
6214 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6215 | r_type, r_sym, reloc.get_r_addend()); | |
6216 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 6217 | } |
e5d5f5ed | 6218 | |
42cacb20 DE |
6219 | switch (r_type) |
6220 | { | |
6221 | case elfcpp::R_POWERPC_NONE: | |
6222 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6223 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 6224 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 6225 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
6226 | break; |
6227 | ||
6228 | case elfcpp::R_PPC64_TOC: | |
6229 | { | |
6230 | Output_data_got_powerpc<size, big_endian>* got | |
6231 | = target->got_section(symtab, layout); | |
6232 | if (parameters->options().output_is_position_independent()) | |
6233 | { | |
bfdfa4cd AM |
6234 | Address off = reloc.get_r_offset(); |
6235 | if (size == 64 | |
9055360d | 6236 | && target->abiversion() < 2 |
bfdfa4cd AM |
6237 | && data_shndx == ppc_object->opd_shndx() |
6238 | && ppc_object->get_opd_discard(off - 8)) | |
6239 | break; | |
6240 | ||
dd93cd0a | 6241 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 6242 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
6243 | rela_dyn->add_output_section_relative(got->output_section(), |
6244 | elfcpp::R_POWERPC_RELATIVE, | |
6245 | output_section, | |
bfdfa4cd AM |
6246 | object, data_shndx, off, |
6247 | symobj->toc_base_offset()); | |
dd93cd0a AM |
6248 | } |
6249 | } | |
42cacb20 DE |
6250 | break; |
6251 | ||
6252 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 6253 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 6254 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
6255 | case elfcpp::R_POWERPC_UADDR32: |
6256 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 6257 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 6258 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
6259 | case elfcpp::R_POWERPC_ADDR16_HI: |
6260 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 6261 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
6262 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6263 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6264 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6265 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6266 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6267 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6268 | case elfcpp::R_PPC64_ADDR16_DS: | |
6269 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6270 | case elfcpp::R_POWERPC_ADDR14: | |
6271 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6272 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
6273 | // If building a shared library (or a position-independent |
6274 | // executable), we need to create a dynamic relocation for | |
6275 | // this location. | |
c9824451 | 6276 | if (parameters->options().output_is_position_independent() |
9055360d | 6277 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 6278 | { |
b3ccdeb5 AM |
6279 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6280 | is_ifunc); | |
1f98a074 | 6281 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
6282 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
6283 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 6284 | { |
b3ccdeb5 AM |
6285 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6286 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6287 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
6288 | output_section, data_shndx, |
6289 | reloc.get_r_offset(), | |
c9824451 | 6290 | reloc.get_r_addend(), false); |
2e702c99 | 6291 | } |
1f98a074 | 6292 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 6293 | { |
dd93cd0a | 6294 | check_non_pic(object, r_type); |
dd93cd0a AM |
6295 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
6296 | data_shndx, reloc.get_r_offset(), | |
6297 | reloc.get_r_addend()); | |
2e702c99 | 6298 | } |
1f98a074 AM |
6299 | else |
6300 | { | |
6301 | gold_assert(lsym.get_st_value() == 0); | |
6302 | unsigned int shndx = lsym.get_st_shndx(); | |
6303 | bool is_ordinary; | |
6304 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
6305 | &is_ordinary); | |
6306 | if (!is_ordinary) | |
6307 | object->error(_("section symbol %u has bad shndx %u"), | |
6308 | r_sym, shndx); | |
6309 | else | |
6310 | rela_dyn->add_local_section(object, shndx, r_type, | |
6311 | output_section, data_shndx, | |
6312 | reloc.get_r_offset()); | |
6313 | } | |
2e702c99 | 6314 | } |
42cacb20 DE |
6315 | break; |
6316 | ||
6317 | case elfcpp::R_POWERPC_REL24: | |
c9824451 | 6318 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6319 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
6320 | case elfcpp::R_POWERPC_REL14: |
6321 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6322 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 6323 | if (!is_ifunc) |
0e123f69 AM |
6324 | { |
6325 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6326 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6327 | r_type, r_sym, reloc.get_r_addend()); | |
6328 | } | |
ec661b9d AM |
6329 | break; |
6330 | ||
7e57d19e AM |
6331 | case elfcpp::R_PPC64_TOCSAVE: |
6332 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
6333 | // caller has already saved r2 and thus a plt call stub need not | |
6334 | // save r2. | |
6335 | if (size == 64 | |
6336 | && target->mark_pltcall(ppc_object, data_shndx, | |
6337 | reloc.get_r_offset() - 4, symtab)) | |
6338 | { | |
6339 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6340 | unsigned int shndx = lsym.get_st_shndx(); | |
6341 | bool is_ordinary; | |
6342 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
6343 | if (!is_ordinary) | |
6344 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
6345 | r_sym, shndx); | |
6346 | else | |
6347 | target->add_tocsave(ppc_object, shndx, | |
6348 | lsym.get_st_value() + reloc.get_r_addend()); | |
6349 | } | |
6350 | break; | |
6351 | ||
ec661b9d AM |
6352 | case elfcpp::R_PPC64_REL64: |
6353 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 6354 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 6355 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 6356 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 6357 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 6358 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 6359 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6360 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6361 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6362 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6363 | case elfcpp::R_PPC64_SECTOFF_DS: |
6364 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6365 | case elfcpp::R_POWERPC_TPREL16: | |
6366 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6367 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6368 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6369 | case elfcpp::R_PPC64_TPREL16_DS: |
6370 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6371 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6372 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6373 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6374 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6375 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6376 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6377 | case elfcpp::R_POWERPC_DTPREL16: |
6378 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6379 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6380 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6381 | case elfcpp::R_PPC64_DTPREL16_DS: |
6382 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6383 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6384 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6385 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6386 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6387 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6388 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6389 | case elfcpp::R_PPC64_TLSGD: |
6390 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6391 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
6392 | break; |
6393 | ||
6394 | case elfcpp::R_POWERPC_GOT16: | |
6395 | case elfcpp::R_POWERPC_GOT16_LO: | |
6396 | case elfcpp::R_POWERPC_GOT16_HI: | |
6397 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6398 | case elfcpp::R_PPC64_GOT16_DS: |
6399 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6400 | { |
c9269dff | 6401 | // The symbol requires a GOT entry. |
dd93cd0a AM |
6402 | Output_data_got_powerpc<size, big_endian>* got |
6403 | = target->got_section(symtab, layout); | |
6404 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 6405 | |
e5d5f5ed | 6406 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 6407 | { |
b01a4b04 AM |
6408 | if (is_ifunc |
6409 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6410 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
6411 | else | |
6412 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
6413 | } | |
6414 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
6415 | { | |
6416 | // If we are generating a shared object or a pie, this | |
6417 | // symbol's GOT entry will be set by a dynamic relocation. | |
6418 | unsigned int off; | |
6419 | off = got->add_constant(0); | |
6420 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 6421 | |
b3ccdeb5 AM |
6422 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6423 | is_ifunc); | |
6424 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6425 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6426 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 6427 | got, off, 0, false); |
2e702c99 | 6428 | } |
42cacb20 DE |
6429 | } |
6430 | break; | |
6431 | ||
cf43a2fe AM |
6432 | case elfcpp::R_PPC64_TOC16: |
6433 | case elfcpp::R_PPC64_TOC16_LO: | |
6434 | case elfcpp::R_PPC64_TOC16_HI: | |
6435 | case elfcpp::R_PPC64_TOC16_HA: | |
6436 | case elfcpp::R_PPC64_TOC16_DS: | |
6437 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6438 | // We need a GOT section. |
6439 | target->got_section(symtab, layout); | |
6440 | break; | |
6441 | ||
dd93cd0a AM |
6442 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6443 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6444 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6445 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6446 | { | |
6447 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6448 | if (tls_type == tls::TLSOPT_NONE) | |
6449 | { | |
6450 | Output_data_got_powerpc<size, big_endian>* got | |
6451 | = target->got_section(symtab, layout); | |
6452 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
6453 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6454 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
6455 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
6456 | } |
6457 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6458 | { | |
6459 | // no GOT relocs needed for Local Exec. | |
6460 | } | |
6461 | else | |
6462 | gold_unreachable(); | |
6463 | } | |
42cacb20 DE |
6464 | break; |
6465 | ||
dd93cd0a AM |
6466 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6467 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6468 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6469 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6470 | { | |
6471 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6472 | if (tls_type == tls::TLSOPT_NONE) | |
6473 | target->tlsld_got_offset(symtab, layout, object); | |
6474 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6475 | { | |
6476 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6477 | if (parameters->options().emit_relocs()) |
6478 | { | |
6479 | Output_section* os = layout->tls_segment()->first_section(); | |
6480 | gold_assert(os != NULL); | |
6481 | os->set_needs_symtab_index(); | |
6482 | } | |
dd93cd0a AM |
6483 | } |
6484 | else | |
6485 | gold_unreachable(); | |
6486 | } | |
42cacb20 | 6487 | break; |
42cacb20 | 6488 | |
dd93cd0a AM |
6489 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
6490 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6491 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6492 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6493 | { | |
6494 | Output_data_got_powerpc<size, big_endian>* got | |
6495 | = target->got_section(symtab, layout); | |
6496 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 6497 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
6498 | } |
6499 | break; | |
42cacb20 | 6500 | |
dd93cd0a AM |
6501 | case elfcpp::R_POWERPC_GOT_TPREL16: |
6502 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6503 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
6504 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6505 | { | |
6506 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
6507 | if (tls_type == tls::TLSOPT_NONE) | |
6508 | { | |
dd93cd0a | 6509 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
6510 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
6511 | { | |
6512 | Output_data_got_powerpc<size, big_endian>* got | |
6513 | = target->got_section(symtab, layout); | |
6514 | unsigned int off = got->add_constant(0); | |
6515 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
6516 | ||
6517 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6518 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
6519 | elfcpp::R_POWERPC_TPREL, | |
6520 | got, off, 0); | |
6521 | } | |
dd93cd0a AM |
6522 | } |
6523 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6524 | { | |
6525 | // no GOT relocs needed for Local Exec. | |
6526 | } | |
6527 | else | |
6528 | gold_unreachable(); | |
6529 | } | |
6530 | break; | |
6531 | ||
6532 | default: | |
6533 | unsupported_reloc_local(object, r_type); | |
6534 | break; | |
6535 | } | |
d8f5a274 | 6536 | |
5edad15d AM |
6537 | if (size == 64 |
6538 | && parameters->options().toc_optimize()) | |
6539 | { | |
6540 | if (data_shndx == ppc_object->toc_shndx()) | |
6541 | { | |
6542 | bool ok = true; | |
6543 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
6544 | || (is_ifunc && target->abiversion() < 2)) | |
6545 | ok = false; | |
6546 | else if (parameters->options().output_is_position_independent()) | |
6547 | { | |
6548 | if (is_ifunc) | |
6549 | ok = false; | |
6550 | else | |
6551 | { | |
6552 | unsigned int shndx = lsym.get_st_shndx(); | |
6553 | if (shndx >= elfcpp::SHN_LORESERVE | |
6554 | && shndx != elfcpp::SHN_XINDEX) | |
6555 | ok = false; | |
6556 | } | |
6557 | } | |
6558 | if (!ok) | |
6559 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
6560 | } | |
6561 | ||
6562 | enum {no_check, check_lo, check_ha} insn_check; | |
6563 | switch (r_type) | |
6564 | { | |
6565 | default: | |
6566 | insn_check = no_check; | |
6567 | break; | |
6568 | ||
6569 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6570 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6571 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6572 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6573 | case elfcpp::R_POWERPC_GOT16_HA: | |
6574 | case elfcpp::R_PPC64_TOC16_HA: | |
6575 | insn_check = check_ha; | |
6576 | break; | |
6577 | ||
6578 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6579 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6580 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6581 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6582 | case elfcpp::R_POWERPC_GOT16_LO: | |
6583 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
6584 | case elfcpp::R_PPC64_TOC16_LO: | |
6585 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
6586 | insn_check = check_lo; | |
6587 | break; | |
6588 | } | |
6589 | ||
6590 | section_size_type slen; | |
6591 | const unsigned char* view = NULL; | |
6592 | if (insn_check != no_check) | |
6593 | { | |
6594 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
6595 | section_size_type off = | |
6596 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
6597 | if (off < slen) | |
6598 | { | |
6599 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
6600 | if (insn_check == check_lo | |
6601 | ? !ok_lo_toc_insn(insn, r_type) | |
6602 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
6603 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
6604 | { | |
6605 | ppc_object->set_no_toc_opt(); | |
6606 | gold_warning(_("%s: toc optimization is not supported " | |
6607 | "for %#08x instruction"), | |
6608 | ppc_object->name().c_str(), insn); | |
6609 | } | |
6610 | } | |
6611 | } | |
6612 | ||
6613 | switch (r_type) | |
6614 | { | |
6615 | default: | |
6616 | break; | |
6617 | case elfcpp::R_PPC64_TOC16: | |
6618 | case elfcpp::R_PPC64_TOC16_LO: | |
6619 | case elfcpp::R_PPC64_TOC16_HI: | |
6620 | case elfcpp::R_PPC64_TOC16_HA: | |
6621 | case elfcpp::R_PPC64_TOC16_DS: | |
6622 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
6623 | unsigned int shndx = lsym.get_st_shndx(); | |
6624 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6625 | bool is_ordinary; | |
6626 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
6627 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
6628 | { | |
6629 | Address dst_off = lsym.get_st_value() + reloc.get_r_offset(); | |
6630 | if (dst_off < ppc_object->section_size(shndx)) | |
6631 | { | |
6632 | bool ok = false; | |
6633 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
6634 | ok = true; | |
6635 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
6636 | { | |
6637 | // Need to check that the insn is a ld | |
6638 | if (!view) | |
6639 | view = ppc_object->section_contents(data_shndx, | |
6640 | &slen, | |
6641 | false); | |
6642 | section_size_type off = | |
6643 | (convert_to_section_size_type(reloc.get_r_offset()) | |
6644 | + (big_endian ? -2 : 3)); | |
6645 | if (off < slen | |
6646 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
6647 | ok = true; | |
6648 | } | |
6649 | if (!ok) | |
6650 | ppc_object->set_no_toc_opt(dst_off); | |
6651 | } | |
6652 | } | |
6653 | break; | |
6654 | } | |
6655 | } | |
6656 | ||
f159cdb6 AM |
6657 | if (size == 32) |
6658 | { | |
6659 | switch (r_type) | |
6660 | { | |
6661 | case elfcpp::R_POWERPC_REL32: | |
6662 | if (ppc_object->got2_shndx() != 0 | |
6663 | && parameters->options().output_is_position_independent()) | |
6664 | { | |
6665 | unsigned int shndx = lsym.get_st_shndx(); | |
6666 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6667 | bool is_ordinary; | |
6668 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
6669 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
6670 | && (ppc_object->section_flags(data_shndx) | |
6671 | & elfcpp::SHF_EXECINSTR) != 0) | |
6672 | gold_error(_("%s: unsupported -mbss-plt code"), | |
6673 | ppc_object->name().c_str()); | |
6674 | } | |
6675 | break; | |
6676 | default: | |
6677 | break; | |
6678 | } | |
6679 | } | |
6680 | ||
d8f5a274 AM |
6681 | switch (r_type) |
6682 | { | |
6683 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
6684 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
6685 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6686 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6687 | case elfcpp::R_POWERPC_GOT16: | |
6688 | case elfcpp::R_PPC64_GOT16_DS: | |
6689 | case elfcpp::R_PPC64_TOC16: | |
6690 | case elfcpp::R_PPC64_TOC16_DS: | |
6691 | ppc_object->set_has_small_toc_reloc(); | |
6692 | default: | |
6693 | break; | |
6694 | } | |
dd93cd0a AM |
6695 | } |
6696 | ||
6697 | // Report an unsupported relocation against a global symbol. | |
6698 | ||
6699 | template<int size, bool big_endian> | |
6700 | void | |
6701 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
6702 | Sized_relobj_file<size, big_endian>* object, | |
6703 | unsigned int r_type, | |
6704 | Symbol* gsym) | |
6705 | { | |
42cacb20 DE |
6706 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
6707 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
6708 | } | |
6709 | ||
6710 | // Scan a relocation for a global symbol. | |
6711 | ||
6712 | template<int size, bool big_endian> | |
6713 | inline void | |
6714 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
6715 | Symbol_table* symtab, |
6716 | Layout* layout, | |
6717 | Target_powerpc<size, big_endian>* target, | |
6718 | Sized_relobj_file<size, big_endian>* object, | |
6719 | unsigned int data_shndx, | |
6720 | Output_section* output_section, | |
6721 | const elfcpp::Rela<size, big_endian>& reloc, | |
6722 | unsigned int r_type, | |
6723 | Symbol* gsym) | |
42cacb20 | 6724 | { |
e3deeb9c AM |
6725 | if (this->maybe_skip_tls_get_addr_call(r_type, gsym) == Track_tls::SKIP) |
6726 | return; | |
6727 | ||
6728 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
6729 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
6730 | { | |
6731 | this->expect_tls_get_addr_call(); | |
6732 | const bool final = gsym->final_value_is_known(); | |
6733 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
6734 | if (tls_type != tls::TLSOPT_NONE) | |
6735 | this->skip_next_tls_get_addr_call(); | |
6736 | } | |
6737 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
6738 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
6739 | { | |
6740 | this->expect_tls_get_addr_call(); | |
6741 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6742 | if (tls_type != tls::TLSOPT_NONE) | |
6743 | this->skip_next_tls_get_addr_call(); | |
6744 | } | |
6745 | ||
dd93cd0a AM |
6746 | Powerpc_relobj<size, big_endian>* ppc_object |
6747 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6748 | ||
e5d5f5ed | 6749 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 6750 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
6751 | bool pushed_ifunc = false; |
6752 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 6753 | { |
0e123f69 | 6754 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 6755 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 6756 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 6757 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 6758 | pushed_ifunc = true; |
ec661b9d | 6759 | } |
e5d5f5ed | 6760 | |
42cacb20 DE |
6761 | switch (r_type) |
6762 | { | |
6763 | case elfcpp::R_POWERPC_NONE: | |
6764 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6765 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 6766 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 6767 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 6768 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
6769 | break; |
6770 | ||
6771 | case elfcpp::R_PPC64_TOC: | |
6772 | { | |
6773 | Output_data_got_powerpc<size, big_endian>* got | |
6774 | = target->got_section(symtab, layout); | |
6775 | if (parameters->options().output_is_position_independent()) | |
6776 | { | |
bfdfa4cd AM |
6777 | Address off = reloc.get_r_offset(); |
6778 | if (size == 64 | |
6779 | && data_shndx == ppc_object->opd_shndx() | |
6780 | && ppc_object->get_opd_discard(off - 8)) | |
6781 | break; | |
6782 | ||
dd93cd0a AM |
6783 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6784 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
6785 | if (data_shndx != ppc_object->opd_shndx()) | |
6786 | symobj = static_cast | |
6787 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
6788 | rela_dyn->add_output_section_relative(got->output_section(), | |
6789 | elfcpp::R_POWERPC_RELATIVE, | |
6790 | output_section, | |
bfdfa4cd | 6791 | object, data_shndx, off, |
dd93cd0a AM |
6792 | symobj->toc_base_offset()); |
6793 | } | |
6794 | } | |
42cacb20 DE |
6795 | break; |
6796 | ||
c9269dff | 6797 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 6798 | if (size == 64 |
9055360d | 6799 | && target->abiversion() < 2 |
bfdfa4cd AM |
6800 | && data_shndx == ppc_object->opd_shndx() |
6801 | && (gsym->is_defined_in_discarded_section() | |
6802 | || gsym->object() != object)) | |
6803 | { | |
6804 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
6805 | break; | |
6806 | } | |
d8e90251 | 6807 | // Fall through. |
dd93cd0a | 6808 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 6809 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
6810 | case elfcpp::R_POWERPC_UADDR32: |
6811 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
6812 | case elfcpp::R_POWERPC_ADDR16: |
6813 | case elfcpp::R_POWERPC_ADDR16_LO: | |
6814 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6815 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 6816 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
6817 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6818 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6819 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6820 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6821 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6822 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6823 | case elfcpp::R_PPC64_ADDR16_DS: | |
6824 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6825 | case elfcpp::R_POWERPC_ADDR14: | |
6826 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6827 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 6828 | { |
c9269dff AM |
6829 | // Make a PLT entry if necessary. |
6830 | if (gsym->needs_plt_entry()) | |
6831 | { | |
9055360d AM |
6832 | // Since this is not a PC-relative relocation, we may be |
6833 | // taking the address of a function. In that case we need to | |
6834 | // set the entry in the dynamic symbol table to the address of | |
6835 | // the PLT call stub. | |
6836 | bool need_ifunc_plt = false; | |
6837 | if ((size == 32 || target->abiversion() >= 2) | |
6838 | && gsym->is_from_dynobj() | |
6839 | && !parameters->options().output_is_position_independent()) | |
6840 | { | |
6841 | gsym->set_needs_dynsym_value(); | |
6842 | need_ifunc_plt = true; | |
6843 | } | |
6844 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 6845 | { |
0e123f69 | 6846 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 6847 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 6848 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
6849 | reloc.get_r_addend()); |
6850 | target->make_plt_entry(symtab, layout, gsym); | |
6851 | } | |
c9269dff AM |
6852 | } |
6853 | // Make a dynamic relocation if necessary. | |
88b8e639 | 6854 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 6855 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 6856 | { |
a82bef93 ST |
6857 | if (!parameters->options().output_is_position_independent() |
6858 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
6859 | { |
6860 | target->copy_reloc(symtab, layout, object, | |
6861 | data_shndx, output_section, gsym, reloc); | |
6862 | } | |
9055360d AM |
6863 | else if ((((size == 32 |
6864 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
6865 | || (size == 64 | |
6866 | && r_type == elfcpp::R_PPC64_ADDR64 | |
6867 | && target->abiversion() >= 2)) | |
627b30b7 AM |
6868 | && gsym->can_use_relative_reloc(false) |
6869 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
6870 | && parameters->options().shared())) | |
6871 | || (size == 64 | |
6872 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 6873 | && target->abiversion() < 2 |
627b30b7 AM |
6874 | && (gsym->can_use_relative_reloc(false) |
6875 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 6876 | { |
b3ccdeb5 AM |
6877 | Reloc_section* rela_dyn |
6878 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6879 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6880 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6881 | rela_dyn->add_symbolless_global_addend( |
6882 | gsym, dynrel, output_section, object, data_shndx, | |
6883 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
6884 | } |
6885 | else | |
6886 | { | |
b3ccdeb5 AM |
6887 | Reloc_section* rela_dyn |
6888 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 6889 | check_non_pic(object, r_type); |
dd93cd0a AM |
6890 | rela_dyn->add_global(gsym, r_type, output_section, |
6891 | object, data_shndx, | |
6892 | reloc.get_r_offset(), | |
6893 | reloc.get_r_addend()); | |
5edad15d AM |
6894 | |
6895 | if (size == 64 | |
6896 | && parameters->options().toc_optimize() | |
6897 | && data_shndx == ppc_object->toc_shndx()) | |
6898 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
6899 | } |
6900 | } | |
42cacb20 DE |
6901 | } |
6902 | break; | |
6903 | ||
cf43a2fe | 6904 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6905 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
6906 | if (!is_ifunc) |
6907 | { | |
0e123f69 | 6908 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 6909 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 6910 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
6911 | if (gsym->needs_plt_entry() |
6912 | || (!gsym->final_value_is_known() | |
6913 | && (gsym->is_undefined() | |
6914 | || gsym->is_from_dynobj() | |
6915 | || gsym->is_preemptible()))) | |
6916 | target->make_plt_entry(symtab, layout, gsym); | |
6917 | } | |
d8e90251 | 6918 | // Fall through. |
42cacb20 | 6919 | |
3ea0a085 | 6920 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6921 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 6922 | // Make a dynamic relocation if necessary. |
88b8e639 | 6923 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 6924 | { |
a82bef93 ST |
6925 | if (!parameters->options().output_is_position_independent() |
6926 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
6927 | { |
6928 | target->copy_reloc(symtab, layout, object, | |
6929 | data_shndx, output_section, gsym, | |
6930 | reloc); | |
6931 | } | |
6932 | else | |
6933 | { | |
b3ccdeb5 AM |
6934 | Reloc_section* rela_dyn |
6935 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
6936 | check_non_pic(object, r_type); |
6937 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
6938 | data_shndx, reloc.get_r_offset(), | |
6939 | reloc.get_r_addend()); | |
6940 | } | |
6941 | } | |
6942 | break; | |
6943 | ||
ec661b9d AM |
6944 | case elfcpp::R_POWERPC_REL14: |
6945 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6946 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 6947 | if (!is_ifunc) |
0e123f69 AM |
6948 | { |
6949 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6950 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6951 | r_type, r_sym, reloc.get_r_addend()); | |
6952 | } | |
ec661b9d AM |
6953 | break; |
6954 | ||
7e57d19e AM |
6955 | case elfcpp::R_PPC64_TOCSAVE: |
6956 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
6957 | // caller has already saved r2 and thus a plt call stub need not | |
6958 | // save r2. | |
6959 | if (size == 64 | |
6960 | && target->mark_pltcall(ppc_object, data_shndx, | |
6961 | reloc.get_r_offset() - 4, symtab)) | |
6962 | { | |
6963 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6964 | bool is_ordinary; | |
6965 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
6966 | if (!is_ordinary) | |
6967 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
6968 | r_sym, shndx); | |
6969 | else | |
6970 | { | |
6971 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
6972 | target->add_tocsave(ppc_object, shndx, | |
6973 | sym->value() + reloc.get_r_addend()); | |
6974 | } | |
6975 | } | |
6976 | break; | |
6977 | ||
6ce78956 AM |
6978 | case elfcpp::R_POWERPC_REL16: |
6979 | case elfcpp::R_POWERPC_REL16_LO: | |
6980 | case elfcpp::R_POWERPC_REL16_HI: | |
6981 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 6982 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 6983 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6984 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6985 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6986 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6987 | case elfcpp::R_PPC64_SECTOFF_DS: |
6988 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6989 | case elfcpp::R_POWERPC_TPREL16: | |
6990 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6991 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6992 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6993 | case elfcpp::R_PPC64_TPREL16_DS: |
6994 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6995 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6996 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6997 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6998 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6999 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 7000 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
7001 | case elfcpp::R_POWERPC_DTPREL16: |
7002 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7003 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7004 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
7005 | case elfcpp::R_PPC64_DTPREL16_DS: |
7006 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
7007 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7008 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7009 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7010 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7011 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7012 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
7013 | case elfcpp::R_PPC64_TLSGD: |
7014 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 7015 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
7016 | break; |
7017 | ||
42cacb20 DE |
7018 | case elfcpp::R_POWERPC_GOT16: |
7019 | case elfcpp::R_POWERPC_GOT16_LO: | |
7020 | case elfcpp::R_POWERPC_GOT16_HI: | |
7021 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
7022 | case elfcpp::R_PPC64_GOT16_DS: |
7023 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 7024 | { |
c9269dff AM |
7025 | // The symbol requires a GOT entry. |
7026 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
7027 | |
7028 | got = target->got_section(symtab, layout); | |
2e702c99 | 7029 | if (gsym->final_value_is_known()) |
2e702c99 | 7030 | { |
b01a4b04 AM |
7031 | if (is_ifunc |
7032 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
7033 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
7034 | else | |
7035 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
7036 | } | |
7037 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
7038 | { | |
7039 | // If we are generating a shared object or a pie, this | |
7040 | // symbol's GOT entry will be set by a dynamic relocation. | |
7041 | unsigned int off = got->add_constant(0); | |
7042 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
7043 | ||
b3ccdeb5 AM |
7044 | Reloc_section* rela_dyn |
7045 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
7046 | ||
e5d5f5ed | 7047 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
7048 | && !((size == 32 |
7049 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
7050 | && gsym->visibility() == elfcpp::STV_PROTECTED |
7051 | && parameters->options().shared())) | |
2e702c99 | 7052 | { |
b3ccdeb5 AM |
7053 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
7054 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
7055 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
7056 | } | |
7057 | else | |
7058 | { | |
7059 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
7060 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 7061 | } |
2e702c99 | 7062 | } |
42cacb20 DE |
7063 | } |
7064 | break; | |
7065 | ||
cf43a2fe AM |
7066 | case elfcpp::R_PPC64_TOC16: |
7067 | case elfcpp::R_PPC64_TOC16_LO: | |
7068 | case elfcpp::R_PPC64_TOC16_HI: | |
7069 | case elfcpp::R_PPC64_TOC16_HA: | |
7070 | case elfcpp::R_PPC64_TOC16_DS: | |
7071 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
7072 | // We need a GOT section. |
7073 | target->got_section(symtab, layout); | |
7074 | break; | |
7075 | ||
dd93cd0a AM |
7076 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7077 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7078 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7079 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7080 | { | |
7081 | const bool final = gsym->final_value_is_known(); | |
7082 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7083 | if (tls_type == tls::TLSOPT_NONE) | |
7084 | { | |
7085 | Output_data_got_powerpc<size, big_endian>* got | |
7086 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
7087 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7088 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
7089 | elfcpp::R_POWERPC_DTPMOD, |
7090 | elfcpp::R_POWERPC_DTPREL); | |
7091 | } | |
7092 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7093 | { | |
acc276d8 AM |
7094 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7095 | { | |
7096 | Output_data_got_powerpc<size, big_endian>* got | |
7097 | = target->got_section(symtab, layout); | |
7098 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7099 | if (gsym->is_undefined() | |
7100 | || gsym->is_from_dynobj()) | |
7101 | { | |
7102 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7103 | elfcpp::R_POWERPC_TPREL); | |
7104 | } | |
7105 | else | |
7106 | { | |
7107 | unsigned int off = got->add_constant(0); | |
7108 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7109 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7110 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7111 | got, off, 0); | |
7112 | } | |
7113 | } | |
dd93cd0a AM |
7114 | } |
7115 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7116 | { | |
7117 | // no GOT relocs needed for Local Exec. | |
7118 | } | |
7119 | else | |
7120 | gold_unreachable(); | |
7121 | } | |
42cacb20 DE |
7122 | break; |
7123 | ||
dd93cd0a AM |
7124 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
7125 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7126 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7127 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7128 | { | |
7129 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7130 | if (tls_type == tls::TLSOPT_NONE) | |
7131 | target->tlsld_got_offset(symtab, layout, object); | |
7132 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7133 | { | |
7134 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
7135 | if (parameters->options().emit_relocs()) |
7136 | { | |
7137 | Output_section* os = layout->tls_segment()->first_section(); | |
7138 | gold_assert(os != NULL); | |
7139 | os->set_needs_symtab_index(); | |
7140 | } | |
dd93cd0a AM |
7141 | } |
7142 | else | |
7143 | gold_unreachable(); | |
7144 | } | |
7145 | break; | |
7146 | ||
7147 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7148 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7149 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7150 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7151 | { | |
7152 | Output_data_got_powerpc<size, big_endian>* got | |
7153 | = target->got_section(symtab, layout); | |
bd73a62d AM |
7154 | if (!gsym->final_value_is_known() |
7155 | && (gsym->is_from_dynobj() | |
7156 | || gsym->is_undefined() | |
7157 | || gsym->is_preemptible())) | |
7158 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
7159 | target->rela_dyn_section(layout), | |
7160 | elfcpp::R_POWERPC_DTPREL); | |
7161 | else | |
7162 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
7163 | } |
7164 | break; | |
7165 | ||
7166 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7167 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7168 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7169 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7170 | { | |
7171 | const bool final = gsym->final_value_is_known(); | |
7172 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7173 | if (tls_type == tls::TLSOPT_NONE) | |
7174 | { | |
acc276d8 AM |
7175 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7176 | { | |
7177 | Output_data_got_powerpc<size, big_endian>* got | |
7178 | = target->got_section(symtab, layout); | |
7179 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7180 | if (gsym->is_undefined() | |
7181 | || gsym->is_from_dynobj()) | |
7182 | { | |
7183 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7184 | elfcpp::R_POWERPC_TPREL); | |
7185 | } | |
7186 | else | |
7187 | { | |
7188 | unsigned int off = got->add_constant(0); | |
7189 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7190 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7191 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7192 | got, off, 0); | |
7193 | } | |
7194 | } | |
dd93cd0a AM |
7195 | } |
7196 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7197 | { | |
7198 | // no GOT relocs needed for Local Exec. | |
7199 | } | |
7200 | else | |
7201 | gold_unreachable(); | |
7202 | } | |
42cacb20 DE |
7203 | break; |
7204 | ||
7205 | default: | |
7206 | unsupported_reloc_global(object, r_type, gsym); | |
7207 | break; | |
7208 | } | |
d8f5a274 | 7209 | |
5edad15d AM |
7210 | if (size == 64 |
7211 | && parameters->options().toc_optimize()) | |
7212 | { | |
7213 | if (data_shndx == ppc_object->toc_shndx()) | |
7214 | { | |
7215 | bool ok = true; | |
7216 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
7217 | || (is_ifunc && target->abiversion() < 2)) | |
7218 | ok = false; | |
7219 | else if (parameters->options().output_is_position_independent() | |
7220 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
7221 | ok = false; | |
7222 | if (!ok) | |
7223 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
7224 | } | |
7225 | ||
7226 | enum {no_check, check_lo, check_ha} insn_check; | |
7227 | switch (r_type) | |
7228 | { | |
7229 | default: | |
7230 | insn_check = no_check; | |
7231 | break; | |
7232 | ||
7233 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7234 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7235 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7236 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7237 | case elfcpp::R_POWERPC_GOT16_HA: | |
7238 | case elfcpp::R_PPC64_TOC16_HA: | |
7239 | insn_check = check_ha; | |
7240 | break; | |
7241 | ||
7242 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7243 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7244 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7245 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7246 | case elfcpp::R_POWERPC_GOT16_LO: | |
7247 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7248 | case elfcpp::R_PPC64_TOC16_LO: | |
7249 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7250 | insn_check = check_lo; | |
7251 | break; | |
7252 | } | |
7253 | ||
7254 | section_size_type slen; | |
7255 | const unsigned char* view = NULL; | |
7256 | if (insn_check != no_check) | |
7257 | { | |
7258 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
7259 | section_size_type off = | |
7260 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
7261 | if (off < slen) | |
7262 | { | |
7263 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
7264 | if (insn_check == check_lo | |
7265 | ? !ok_lo_toc_insn(insn, r_type) | |
7266 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7267 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
7268 | { | |
7269 | ppc_object->set_no_toc_opt(); | |
7270 | gold_warning(_("%s: toc optimization is not supported " | |
7271 | "for %#08x instruction"), | |
7272 | ppc_object->name().c_str(), insn); | |
7273 | } | |
7274 | } | |
7275 | } | |
7276 | ||
7277 | switch (r_type) | |
7278 | { | |
7279 | default: | |
7280 | break; | |
7281 | case elfcpp::R_PPC64_TOC16: | |
7282 | case elfcpp::R_PPC64_TOC16_LO: | |
7283 | case elfcpp::R_PPC64_TOC16_HI: | |
7284 | case elfcpp::R_PPC64_TOC16_HA: | |
7285 | case elfcpp::R_PPC64_TOC16_DS: | |
7286 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7287 | if (gsym->source() == Symbol::FROM_OBJECT | |
7288 | && !gsym->object()->is_dynamic()) | |
7289 | { | |
7290 | Powerpc_relobj<size, big_endian>* sym_object | |
7291 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7292 | bool is_ordinary; | |
7293 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
7294 | if (shndx == sym_object->toc_shndx()) | |
7295 | { | |
7296 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
7297 | Address dst_off = sym->value() + reloc.get_r_offset(); | |
7298 | if (dst_off < sym_object->section_size(shndx)) | |
7299 | { | |
7300 | bool ok = false; | |
7301 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
7302 | ok = true; | |
7303 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
7304 | { | |
7305 | // Need to check that the insn is a ld | |
7306 | if (!view) | |
7307 | view = ppc_object->section_contents(data_shndx, | |
7308 | &slen, | |
7309 | false); | |
7310 | section_size_type off = | |
7311 | (convert_to_section_size_type(reloc.get_r_offset()) | |
7312 | + (big_endian ? -2 : 3)); | |
7313 | if (off < slen | |
7314 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
7315 | ok = true; | |
7316 | } | |
7317 | if (!ok) | |
7318 | sym_object->set_no_toc_opt(dst_off); | |
7319 | } | |
7320 | } | |
7321 | } | |
7322 | break; | |
7323 | } | |
7324 | } | |
7325 | ||
f159cdb6 AM |
7326 | if (size == 32) |
7327 | { | |
7328 | switch (r_type) | |
7329 | { | |
7330 | case elfcpp::R_PPC_LOCAL24PC: | |
7331 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
7332 | gold_error(_("%s: unsupported -mbss-plt code"), | |
7333 | ppc_object->name().c_str()); | |
7334 | break; | |
7335 | default: | |
7336 | break; | |
7337 | } | |
7338 | } | |
7339 | ||
d8f5a274 AM |
7340 | switch (r_type) |
7341 | { | |
7342 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7343 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7344 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7345 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7346 | case elfcpp::R_POWERPC_GOT16: | |
7347 | case elfcpp::R_PPC64_GOT16_DS: | |
7348 | case elfcpp::R_PPC64_TOC16: | |
7349 | case elfcpp::R_PPC64_TOC16_DS: | |
7350 | ppc_object->set_has_small_toc_reloc(); | |
7351 | default: | |
7352 | break; | |
7353 | } | |
42cacb20 DE |
7354 | } |
7355 | ||
6d03d481 ST |
7356 | // Process relocations for gc. |
7357 | ||
7358 | template<int size, bool big_endian> | |
7359 | void | |
7360 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
7361 | Symbol_table* symtab, |
7362 | Layout* layout, | |
7363 | Sized_relobj_file<size, big_endian>* object, | |
7364 | unsigned int data_shndx, | |
7365 | unsigned int, | |
7366 | const unsigned char* prelocs, | |
7367 | size_t reloc_count, | |
7368 | Output_section* output_section, | |
7369 | bool needs_special_offset_handling, | |
7370 | size_t local_symbol_count, | |
7371 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
7372 | { |
7373 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
7374 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
7375 | Classify_reloc; | |
7376 | ||
e81fea4d AM |
7377 | Powerpc_relobj<size, big_endian>* ppc_object |
7378 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7379 | if (size == 64) | |
7380 | ppc_object->set_opd_valid(); | |
7381 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
7382 | { | |
7383 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
7384 | for (p = ppc_object->access_from_map()->begin(); | |
7385 | p != ppc_object->access_from_map()->end(); | |
7386 | ++p) | |
7387 | { | |
7388 | Address dst_off = p->first; | |
7389 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
7390 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
7391 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
7392 | { | |
efc6fa12 | 7393 | Relobj* src_obj = s->first; |
e81fea4d AM |
7394 | unsigned int src_indx = s->second; |
7395 | symtab->gc()->add_reference(src_obj, src_indx, | |
7396 | ppc_object, dst_indx); | |
7397 | } | |
7398 | p->second.clear(); | |
7399 | } | |
7400 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 7401 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
7402 | // Don't look at .opd relocs as .opd will reference everything. |
7403 | return; | |
7404 | } | |
6d03d481 | 7405 | |
4d625b70 | 7406 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
7407 | symtab, |
7408 | layout, | |
7409 | this, | |
7410 | object, | |
7411 | data_shndx, | |
7412 | prelocs, | |
7413 | reloc_count, | |
7414 | output_section, | |
7415 | needs_special_offset_handling, | |
7416 | local_symbol_count, | |
7417 | plocal_symbols); | |
7418 | } | |
7419 | ||
e81fea4d AM |
7420 | // Handle target specific gc actions when adding a gc reference from |
7421 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
7422 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
7423 | // section of a function descriptor. | |
7424 | ||
7425 | template<int size, bool big_endian> | |
7426 | void | |
7427 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
7428 | Symbol_table* symtab, | |
efc6fa12 | 7429 | Relobj* src_obj, |
e81fea4d | 7430 | unsigned int src_shndx, |
efc6fa12 | 7431 | Relobj* dst_obj, |
e81fea4d AM |
7432 | unsigned int dst_shndx, |
7433 | Address dst_off) const | |
7434 | { | |
6c77229c AM |
7435 | if (size != 64 || dst_obj->is_dynamic()) |
7436 | return; | |
7437 | ||
e81fea4d AM |
7438 | Powerpc_relobj<size, big_endian>* ppc_object |
7439 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 7440 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7441 | { |
7442 | if (ppc_object->opd_valid()) | |
7443 | { | |
7444 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
7445 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
7446 | } | |
7447 | else | |
7448 | { | |
7449 | // If we haven't run scan_opd_relocs, we must delay | |
7450 | // processing this function descriptor reference. | |
7451 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
7452 | } | |
7453 | } | |
7454 | } | |
7455 | ||
7456 | // Add any special sections for this symbol to the gc work list. | |
7457 | // For powerpc64, this adds the code section of a function | |
7458 | // descriptor. | |
7459 | ||
7460 | template<int size, bool big_endian> | |
7461 | void | |
7462 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
7463 | Symbol_table* symtab, | |
7464 | Symbol* sym) const | |
7465 | { | |
7466 | if (size == 64) | |
7467 | { | |
7468 | Powerpc_relobj<size, big_endian>* ppc_object | |
7469 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
7470 | bool is_ordinary; | |
7471 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 7472 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7473 | { |
7474 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
7475 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
7476 | if (ppc_object->opd_valid()) |
7477 | { | |
7478 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
7479 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
7480 | dst_indx)); | |
c6de8ed4 AM |
7481 | } |
7482 | else | |
7483 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
7484 | } |
7485 | } | |
7486 | } | |
7487 | ||
dc3714f3 AM |
7488 | // For a symbol location in .opd, set LOC to the location of the |
7489 | // function entry. | |
7490 | ||
7491 | template<int size, bool big_endian> | |
7492 | void | |
7493 | Target_powerpc<size, big_endian>::do_function_location( | |
7494 | Symbol_location* loc) const | |
7495 | { | |
a2d7bf59 | 7496 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
7497 | { |
7498 | if (loc->object->is_dynamic()) | |
7499 | { | |
7500 | Powerpc_dynobj<size, big_endian>* ppc_object | |
7501 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
7502 | if (loc->shndx == ppc_object->opd_shndx()) | |
7503 | { | |
7504 | Address dest_off; | |
7505 | Address off = loc->offset - ppc_object->opd_address(); | |
7506 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
7507 | loc->offset = dest_off; | |
7508 | } | |
7509 | } | |
7510 | else | |
7511 | { | |
7512 | const Powerpc_relobj<size, big_endian>* ppc_object | |
7513 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
7514 | if (loc->shndx == ppc_object->opd_shndx()) | |
7515 | { | |
7516 | Address dest_off; | |
7517 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
7518 | loc->offset = dest_off; | |
7519 | } | |
7520 | } | |
7521 | } | |
7522 | } | |
7523 | ||
bbec1a5d AM |
7524 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
7525 | // compiled with -fsplit-stack. The function calls non-split-stack | |
7526 | // code. Change the function to ensure it has enough stack space to | |
7527 | // call some random function. | |
7528 | ||
7529 | template<int size, bool big_endian> | |
7530 | void | |
7531 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
7532 | Relobj* object, | |
7533 | unsigned int shndx, | |
7534 | section_offset_type fnoffset, | |
7535 | section_size_type fnsize, | |
6e0813d3 CC |
7536 | const unsigned char* prelocs, |
7537 | size_t reloc_count, | |
bbec1a5d AM |
7538 | unsigned char* view, |
7539 | section_size_type view_size, | |
7540 | std::string* from, | |
7541 | std::string* to) const | |
7542 | { | |
7543 | // 32-bit not supported. | |
7544 | if (size == 32) | |
7545 | { | |
7546 | // warn | |
7547 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
7548 | prelocs, reloc_count, view, view_size, |
7549 | from, to); | |
bbec1a5d AM |
7550 | return; |
7551 | } | |
7552 | ||
7553 | // The function always starts with | |
7554 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
7555 | // addis %r12,%r1,-allocate@ha | |
7556 | // addi %r12,%r12,-allocate@l | |
7557 | // cmpld %r12,%r0 | |
7558 | // but note that the addis or addi may be replaced with a nop | |
7559 | ||
7560 | unsigned char *entry = view + fnoffset; | |
7561 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
7562 | ||
7563 | if ((insn & 0xffff0000) == addis_2_12) | |
7564 | { | |
7565 | /* Skip ELFv2 global entry code. */ | |
7566 | entry += 8; | |
7567 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
7568 | } | |
7569 | ||
7570 | unsigned char *pinsn = entry; | |
7571 | bool ok = false; | |
7572 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
7573 | if (insn == ld_private_ss) | |
7574 | { | |
7575 | int32_t allocate = 0; | |
7576 | while (1) | |
7577 | { | |
7578 | pinsn += 4; | |
7579 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
7580 | if ((insn & 0xffff0000) == addis_12_1) | |
7581 | allocate += (insn & 0xffff) << 16; | |
7582 | else if ((insn & 0xffff0000) == addi_12_1 | |
7583 | || (insn & 0xffff0000) == addi_12_12) | |
7584 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
7585 | else if (insn != nop) | |
7586 | break; | |
7587 | } | |
7588 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
7589 | { | |
7590 | int extra = parameters->options().split_stack_adjust_size(); | |
7591 | allocate -= extra; | |
7592 | if (allocate >= 0 || extra < 0) | |
7593 | { | |
7594 | object->error(_("split-stack stack size overflow at " | |
7595 | "section %u offset %0zx"), | |
7596 | shndx, static_cast<size_t>(fnoffset)); | |
7597 | return; | |
7598 | } | |
7599 | pinsn = entry + 4; | |
7600 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
7601 | if (insn != addis_12_1) | |
7602 | { | |
7603 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7604 | pinsn += 4; | |
7605 | insn = addi_12_12 | (allocate & 0xffff); | |
7606 | if (insn != addi_12_12) | |
7607 | { | |
7608 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7609 | pinsn += 4; | |
7610 | } | |
7611 | } | |
7612 | else | |
7613 | { | |
7614 | insn = addi_12_1 | (allocate & 0xffff); | |
7615 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7616 | pinsn += 4; | |
7617 | } | |
7618 | if (pinsn != entry + 12) | |
7619 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
7620 | ||
7621 | ok = true; | |
7622 | } | |
7623 | } | |
7624 | ||
7625 | if (!ok) | |
7626 | { | |
7627 | if (!object->has_no_split_stack()) | |
7628 | object->error(_("failed to match split-stack sequence at " | |
7629 | "section %u offset %0zx"), | |
7630 | shndx, static_cast<size_t>(fnoffset)); | |
7631 | } | |
7632 | } | |
7633 | ||
42cacb20 DE |
7634 | // Scan relocations for a section. |
7635 | ||
7636 | template<int size, bool big_endian> | |
7637 | void | |
7638 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
7639 | Symbol_table* symtab, |
7640 | Layout* layout, | |
7641 | Sized_relobj_file<size, big_endian>* object, | |
7642 | unsigned int data_shndx, | |
7643 | unsigned int sh_type, | |
7644 | const unsigned char* prelocs, | |
7645 | size_t reloc_count, | |
7646 | Output_section* output_section, | |
7647 | bool needs_special_offset_handling, | |
7648 | size_t local_symbol_count, | |
7649 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
7650 | { |
7651 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
7652 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
7653 | Classify_reloc; | |
42cacb20 | 7654 | |
7ee7ff70 AM |
7655 | if (!this->plt_localentry0_init_) |
7656 | { | |
7657 | bool plt_localentry0 = false; | |
7658 | if (size == 64 | |
7659 | && this->abiversion() >= 2) | |
7660 | { | |
7661 | if (parameters->options().user_set_plt_localentry()) | |
7662 | plt_localentry0 = parameters->options().plt_localentry(); | |
7663 | else | |
7664 | plt_localentry0 = symtab->lookup("GLIBC_2.26", NULL) != NULL; | |
7665 | } | |
7666 | this->plt_localentry0_ = plt_localentry0; | |
7667 | this->plt_localentry0_init_ = true; | |
7668 | } | |
7669 | ||
42cacb20 DE |
7670 | if (sh_type == elfcpp::SHT_REL) |
7671 | { | |
7672 | gold_error(_("%s: unsupported REL reloc section"), | |
7673 | object->name().c_str()); | |
7674 | return; | |
7675 | } | |
7676 | ||
4d625b70 | 7677 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
7678 | symtab, |
7679 | layout, | |
7680 | this, | |
7681 | object, | |
7682 | data_shndx, | |
7683 | prelocs, | |
7684 | reloc_count, | |
7685 | output_section, | |
7686 | needs_special_offset_handling, | |
7687 | local_symbol_count, | |
7688 | plocal_symbols); | |
7689 | } | |
7690 | ||
ec4dbad3 AM |
7691 | // Functor class for processing the global symbol table. |
7692 | // Removes symbols defined on discarded opd entries. | |
7693 | ||
7694 | template<bool big_endian> | |
7695 | class Global_symbol_visitor_opd | |
7696 | { | |
7697 | public: | |
7698 | Global_symbol_visitor_opd() | |
7699 | { } | |
7700 | ||
7701 | void | |
7702 | operator()(Sized_symbol<64>* sym) | |
7703 | { | |
7704 | if (sym->has_symtab_index() | |
7705 | || sym->source() != Symbol::FROM_OBJECT | |
7706 | || !sym->in_real_elf()) | |
7707 | return; | |
7708 | ||
6c77229c AM |
7709 | if (sym->object()->is_dynamic()) |
7710 | return; | |
7711 | ||
ec4dbad3 AM |
7712 | Powerpc_relobj<64, big_endian>* symobj |
7713 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 7714 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
7715 | return; |
7716 | ||
7717 | bool is_ordinary; | |
7718 | unsigned int shndx = sym->shndx(&is_ordinary); | |
7719 | if (shndx == symobj->opd_shndx() | |
7720 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
7721 | { |
7722 | sym->set_undefined(); | |
e3ee8ed4 | 7723 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
7724 | sym->set_is_defined_in_discarded_section(); |
7725 | sym->set_symtab_index(-1U); | |
7726 | } | |
ec4dbad3 AM |
7727 | } |
7728 | }; | |
7729 | ||
f3a0ed29 AM |
7730 | template<int size, bool big_endian> |
7731 | void | |
7732 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
7733 | Layout* layout, | |
7734 | Symbol_table* symtab) | |
7735 | { | |
7736 | if (size == 64) | |
7737 | { | |
d49044c7 AM |
7738 | Output_data_save_res<size, big_endian>* savres |
7739 | = new Output_data_save_res<size, big_endian>(symtab); | |
7740 | this->savres_section_ = savres; | |
f3a0ed29 AM |
7741 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
7742 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
7743 | savres, ORDER_TEXT, false); | |
7744 | } | |
7745 | } | |
7746 | ||
d8f5a274 AM |
7747 | // Sort linker created .got section first (for the header), then input |
7748 | // sections belonging to files using small model code. | |
7749 | ||
7750 | template<bool big_endian> | |
7751 | class Sort_toc_sections | |
7752 | { | |
7753 | public: | |
7754 | bool | |
7755 | operator()(const Output_section::Input_section& is1, | |
7756 | const Output_section::Input_section& is2) const | |
7757 | { | |
7758 | if (!is1.is_input_section() && is2.is_input_section()) | |
7759 | return true; | |
7760 | bool small1 | |
7761 | = (is1.is_input_section() | |
7762 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
7763 | ->has_small_toc_reloc())); | |
7764 | bool small2 | |
7765 | = (is2.is_input_section() | |
7766 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
7767 | ->has_small_toc_reloc())); | |
7768 | return small1 && !small2; | |
7769 | } | |
7770 | }; | |
7771 | ||
42cacb20 DE |
7772 | // Finalize the sections. |
7773 | ||
7774 | template<int size, bool big_endian> | |
7775 | void | |
d5b40221 DK |
7776 | Target_powerpc<size, big_endian>::do_finalize_sections( |
7777 | Layout* layout, | |
f59f41f3 | 7778 | const Input_objects*, |
ec4dbad3 | 7779 | Symbol_table* symtab) |
42cacb20 | 7780 | { |
c9824451 AM |
7781 | if (parameters->doing_static_link()) |
7782 | { | |
7783 | // At least some versions of glibc elf-init.o have a strong | |
7784 | // reference to __rela_iplt marker syms. A weak ref would be | |
7785 | // better.. | |
7786 | if (this->iplt_ != NULL) | |
7787 | { | |
7788 | Reloc_section* rel = this->iplt_->rel_plt(); | |
7789 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
7790 | Symbol_table::PREDEFINED, rel, 0, 0, | |
7791 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
7792 | elfcpp::STV_HIDDEN, 0, false, true); | |
7793 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
7794 | Symbol_table::PREDEFINED, rel, 0, 0, | |
7795 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
7796 | elfcpp::STV_HIDDEN, 0, true, true); | |
7797 | } | |
7798 | else | |
7799 | { | |
7800 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
7801 | Symbol_table::PREDEFINED, 0, 0, | |
7802 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
7803 | elfcpp::STV_HIDDEN, 0, true, false); | |
7804 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
7805 | Symbol_table::PREDEFINED, 0, 0, | |
7806 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
7807 | elfcpp::STV_HIDDEN, 0, true, false); | |
7808 | } | |
7809 | } | |
7810 | ||
ec4dbad3 AM |
7811 | if (size == 64) |
7812 | { | |
7813 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
7814 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
7815 | |
7816 | if (!parameters->options().relocatable()) | |
7817 | { | |
7818 | this->define_save_restore_funcs(layout, symtab); | |
7819 | ||
7820 | // Annoyingly, we need to make these sections now whether or | |
7821 | // not we need them. If we delay until do_relax then we | |
7822 | // need to mess with the relaxation machinery checkpointing. | |
7823 | this->got_section(symtab, layout); | |
7824 | this->make_brlt_section(layout); | |
d8f5a274 AM |
7825 | |
7826 | if (parameters->options().toc_sort()) | |
7827 | { | |
7828 | Output_section* os = this->got_->output_section(); | |
7829 | if (os != NULL && os->input_sections().size() > 1) | |
7830 | std::stable_sort(os->input_sections().begin(), | |
7831 | os->input_sections().end(), | |
7832 | Sort_toc_sections<big_endian>()); | |
7833 | } | |
ec661b9d | 7834 | } |
ec4dbad3 AM |
7835 | } |
7836 | ||
42cacb20 | 7837 | // Fill in some more dynamic tags. |
c9269dff | 7838 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 7839 | if (odyn != NULL) |
cf43a2fe | 7840 | { |
c9824451 AM |
7841 | const Reloc_section* rel_plt = (this->plt_ == NULL |
7842 | ? NULL | |
7843 | : this->plt_->rel_plt()); | |
7844 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
7845 | this->rela_dyn_, true, size == 32); | |
7846 | ||
7847 | if (size == 32) | |
dd93cd0a | 7848 | { |
c9824451 AM |
7849 | if (this->got_ != NULL) |
7850 | { | |
7851 | this->got_->finalize_data_size(); | |
7852 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
7853 | this->got_, this->got_->g_o_t()); | |
7854 | } | |
dd93cd0a | 7855 | } |
c9824451 | 7856 | else |
dd93cd0a | 7857 | { |
c9824451 AM |
7858 | if (this->glink_ != NULL) |
7859 | { | |
7860 | this->glink_->finalize_data_size(); | |
7861 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
7862 | this->glink_, | |
ec661b9d | 7863 | (this->glink_->pltresolve_size |
c9824451 AM |
7864 | - 32)); |
7865 | } | |
7ee7ff70 AM |
7866 | if (this->has_localentry0_) |
7867 | odyn->add_constant(elfcpp::DT_PPC64_OPT, | |
7868 | elfcpp::PPC64_OPT_LOCALENTRY); | |
dd93cd0a | 7869 | } |
c9269dff | 7870 | } |
cf43a2fe | 7871 | |
42cacb20 DE |
7872 | // Emit any relocs we saved in an attempt to avoid generating COPY |
7873 | // relocs. | |
7874 | if (this->copy_relocs_.any_saved_relocs()) | |
7875 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
7876 | } | |
7877 | ||
5edad15d AM |
7878 | // Emit any saved relocs, and mark toc entries using any of these |
7879 | // relocs as not optimizable. | |
aba6bc71 | 7880 | |
5edad15d AM |
7881 | template<int sh_type, int size, bool big_endian> |
7882 | void | |
7883 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
7884 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 7885 | { |
5edad15d AM |
7886 | if (size == 64 |
7887 | && parameters->options().toc_optimize()) | |
7888 | { | |
7889 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
7890 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
7891 | p != this->entries_.end(); | |
7892 | ++p) | |
7893 | { | |
7894 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
7895 | entry = *p; | |
7896 | ||
7897 | // If the symbol is no longer defined in a dynamic object, | |
7898 | // then we emitted a COPY relocation. If it is still | |
7899 | // dynamic then we'll need dynamic relocations and thus | |
7900 | // can't optimize toc entries. | |
7901 | if (entry.sym_->is_from_dynobj()) | |
7902 | { | |
7903 | Powerpc_relobj<size, big_endian>* ppc_object | |
7904 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
7905 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
7906 | ppc_object->set_no_toc_opt(entry.address_); | |
7907 | } | |
7908 | } | |
7909 | } | |
7910 | ||
7911 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
7912 | } |
7913 | ||
3ea0a085 AM |
7914 | // Return the value to use for a branch relocation. |
7915 | ||
7916 | template<int size, bool big_endian> | |
1611bc4a | 7917 | bool |
3ea0a085 | 7918 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 7919 | const Symbol_table* symtab, |
3ea0a085 AM |
7920 | const Sized_symbol<size>* gsym, |
7921 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 7922 | Address *value, |
3ea0a085 AM |
7923 | unsigned int *dest_shndx) |
7924 | { | |
9055360d AM |
7925 | if (size == 32 || this->abiversion() >= 2) |
7926 | gold_unreachable(); | |
3ea0a085 | 7927 | *dest_shndx = 0; |
3ea0a085 AM |
7928 | |
7929 | // If the symbol is defined in an opd section, ie. is a function | |
7930 | // descriptor, use the function descriptor code entry address | |
7931 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 7932 | if (gsym != NULL |
0e123f69 AM |
7933 | && (gsym->source() != Symbol::FROM_OBJECT |
7934 | || gsym->object()->is_dynamic())) | |
1611bc4a | 7935 | return true; |
3ea0a085 AM |
7936 | if (gsym != NULL) |
7937 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7938 | unsigned int shndx = symobj->opd_shndx(); | |
7939 | if (shndx == 0) | |
1611bc4a | 7940 | return true; |
3ea0a085 | 7941 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 7942 | if (opd_addr == invalid_address) |
1611bc4a | 7943 | return true; |
c6905c28 | 7944 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 7945 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
7946 | { |
7947 | Address sec_off; | |
1611bc4a | 7948 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
7949 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
7950 | { | |
7951 | Section_id folded | |
7952 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
7953 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
7954 | *dest_shndx = folded.second; | |
7955 | } | |
3ea0a085 | 7956 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
7957 | if (sec_addr == invalid_address) |
7958 | return false; | |
7959 | ||
3ea0a085 | 7960 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 7961 | *value = sec_addr + sec_off; |
3ea0a085 | 7962 | } |
1611bc4a | 7963 | return true; |
3ea0a085 AM |
7964 | } |
7965 | ||
42cacb20 DE |
7966 | // Perform a relocation. |
7967 | ||
7968 | template<int size, bool big_endian> | |
7969 | inline bool | |
7970 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 7971 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 7972 | unsigned int, |
d83ce4e3 AM |
7973 | Target_powerpc* target, |
7974 | Output_section* os, | |
7975 | size_t relnum, | |
91a65d2f | 7976 | const unsigned char* preloc, |
d83ce4e3 AM |
7977 | const Sized_symbol<size>* gsym, |
7978 | const Symbol_value<size>* psymval, | |
7979 | unsigned char* view, | |
c9269dff AM |
7980 | Address address, |
7981 | section_size_type view_size) | |
42cacb20 | 7982 | { |
0e804863 ILT |
7983 | if (view == NULL) |
7984 | return true; | |
7985 | ||
91a65d2f AM |
7986 | const elfcpp::Rela<size, big_endian> rela(preloc); |
7987 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
e3deeb9c | 7988 | switch (this->maybe_skip_tls_get_addr_call(r_type, gsym)) |
dd93cd0a | 7989 | { |
e3deeb9c AM |
7990 | case Track_tls::NOT_EXPECTED: |
7991 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7992 | _("__tls_get_addr call lacks marker reloc")); | |
7993 | break; | |
7994 | case Track_tls::EXPECTED: | |
7995 | // We have already complained. | |
7996 | break; | |
7997 | case Track_tls::SKIP: | |
7998 | return true; | |
7999 | case Track_tls::NORMAL: | |
8000 | break; | |
dd93cd0a | 8001 | } |
dd93cd0a | 8002 | |
42cacb20 | 8003 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 8004 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
0e123f69 | 8005 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
dcfc7dd4 AM |
8006 | // Offset from start of insn to d-field reloc. |
8007 | const int d_offset = big_endian ? 2 : 0; | |
8008 | ||
3ea0a085 AM |
8009 | Powerpc_relobj<size, big_endian>* const object |
8010 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 8011 | Address value = 0; |
0cfb0717 | 8012 | bool has_stub_value = false; |
7ee7ff70 | 8013 | bool localentry0 = false; |
e5d5f5ed | 8014 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
b3ccdeb5 | 8015 | if ((gsym != NULL |
88b8e639 | 8016 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
b3ccdeb5 AM |
8017 | : object->local_has_plt_offset(r_sym)) |
8018 | && (!psymval->is_ifunc_symbol() | |
9055360d | 8019 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 8020 | { |
9055360d AM |
8021 | if (size == 64 |
8022 | && gsym != NULL | |
8023 | && target->abiversion() >= 2 | |
8024 | && !parameters->options().output_is_position_independent() | |
8025 | && !is_branch_reloc(r_type)) | |
ec661b9d | 8026 | { |
faa2211d AM |
8027 | Address off = target->glink_section()->find_global_entry(gsym); |
8028 | if (off != invalid_address) | |
6ec65f28 AM |
8029 | { |
8030 | value = target->glink_section()->global_entry_address() + off; | |
8031 | has_stub_value = true; | |
8032 | } | |
ec661b9d | 8033 | } |
c9824451 | 8034 | else |
9055360d AM |
8035 | { |
8036 | Stub_table<size, big_endian>* stub_table | |
8037 | = object->stub_table(relinfo->data_shndx); | |
8038 | if (stub_table == NULL) | |
8039 | { | |
8040 | // This is a ref from a data section to an ifunc symbol. | |
8041 | if (target->stub_tables().size() != 0) | |
8042 | stub_table = target->stub_tables()[0]; | |
8043 | } | |
faa2211d AM |
8044 | if (stub_table != NULL) |
8045 | { | |
7e57d19e | 8046 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 8047 | if (gsym != NULL) |
7e57d19e | 8048 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
8049 | rela.get_r_addend()); |
8050 | else | |
7e57d19e | 8051 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 8052 | rela.get_r_addend()); |
7e57d19e | 8053 | if (ent != NULL) |
faa2211d | 8054 | { |
7e57d19e AM |
8055 | value = stub_table->stub_address() + ent->off_; |
8056 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
8057 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
8058 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
8059 | if (size == 64 | |
8060 | && ent->r2save_ | |
8061 | && relnum + 1 < reloc_count) | |
8062 | { | |
8063 | Reltype next_rela(preloc + reloc_size); | |
8064 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
8065 | == elfcpp::R_PPC64_TOCSAVE | |
8066 | && next_rela.get_r_offset() == rela.get_r_offset() + 4) | |
8067 | value += 4; | |
8068 | } | |
7ee7ff70 | 8069 | localentry0 = ent->localentry0_; |
faa2211d AM |
8070 | has_stub_value = true; |
8071 | } | |
8072 | } | |
9055360d | 8073 | } |
faa2211d AM |
8074 | // We don't care too much about bogus debug references to |
8075 | // non-local functions, but otherwise there had better be a plt | |
8076 | // call stub or global entry stub as appropriate. | |
8077 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 8078 | } |
cf43a2fe AM |
8079 | |
8080 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
8081 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
8082 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
8083 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
8084 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
8085 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 8086 | { |
cf43a2fe AM |
8087 | if (gsym != NULL) |
8088 | { | |
8089 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
8090 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
8091 | } | |
8092 | else | |
8093 | { | |
cf43a2fe AM |
8094 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
8095 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
8096 | } | |
dd93cd0a | 8097 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
8098 | } |
8099 | else if (r_type == elfcpp::R_PPC64_TOC) | |
8100 | { | |
c9269dff | 8101 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 8102 | + object->toc_base_offset()); |
cf43a2fe AM |
8103 | } |
8104 | else if (gsym != NULL | |
8105 | && (r_type == elfcpp::R_POWERPC_REL24 | |
8106 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 8107 | && has_stub_value) |
cf43a2fe | 8108 | { |
c9269dff AM |
8109 | if (size == 64) |
8110 | { | |
8111 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
8112 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
7ee7ff70 AM |
8113 | bool can_plt_call = localentry0; |
8114 | if (!localentry0 && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 8115 | { |
3ea0a085 | 8116 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 8117 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
8118 | if ((insn & 1) != 0 |
8119 | && (insn2 == nop | |
8120 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 8121 | { |
b4f7960d AM |
8122 | elfcpp::Swap<32, big_endian>:: |
8123 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
8124 | can_plt_call = true; |
8125 | } | |
8126 | } | |
8127 | if (!can_plt_call) | |
3ea0a085 AM |
8128 | { |
8129 | // If we don't have a branch and link followed by a nop, | |
8130 | // we can't go via the plt because there is no place to | |
8131 | // put a toc restoring instruction. | |
8132 | // Unless we know we won't be returning. | |
8133 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
8134 | can_plt_call = true; | |
8135 | } | |
8136 | if (!can_plt_call) | |
8137 | { | |
ba8ca3e7 AM |
8138 | // g++ as of 20130507 emits self-calls without a |
8139 | // following nop. This is arguably wrong since we have | |
8140 | // conflicting information. On the one hand a global | |
8141 | // symbol and on the other a local call sequence, but | |
8142 | // don't error for this special case. | |
8143 | // It isn't possible to cheaply verify we have exactly | |
8144 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 8145 | bool ok = false; |
c9824451 | 8146 | Address code = value; |
3ea0a085 AM |
8147 | if (gsym->source() == Symbol::FROM_OBJECT |
8148 | && gsym->object() == object) | |
8149 | { | |
9055360d AM |
8150 | unsigned int dest_shndx = 0; |
8151 | if (target->abiversion() < 2) | |
8152 | { | |
8153 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
8154 | code = psymval->value(object, addend); |
8155 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
8156 | &code, &dest_shndx); | |
9055360d | 8157 | } |
3ea0a085 AM |
8158 | bool is_ordinary; |
8159 | if (dest_shndx == 0) | |
8160 | dest_shndx = gsym->shndx(&is_ordinary); | |
8161 | ok = dest_shndx == relinfo->data_shndx; | |
8162 | } | |
8163 | if (!ok) | |
c9824451 AM |
8164 | { |
8165 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8166 | _("call lacks nop, can't restore toc; " | |
8167 | "recompile with -fPIC")); | |
8168 | value = code; | |
8169 | } | |
3ea0a085 | 8170 | } |
c9269dff | 8171 | } |
cf43a2fe | 8172 | } |
dd93cd0a AM |
8173 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
8174 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8175 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8176 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8177 | { | |
8178 | // First instruction of a global dynamic sequence, arg setup insn. | |
8179 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8180 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8181 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
8182 | if (tls_type == tls::TLSOPT_NONE) | |
8183 | got_type = GOT_TYPE_TLSGD; | |
8184 | else if (tls_type == tls::TLSOPT_TO_IE) | |
8185 | got_type = GOT_TYPE_TPREL; | |
8186 | if (got_type != GOT_TYPE_STANDARD) | |
8187 | { | |
8188 | if (gsym != NULL) | |
8189 | { | |
8190 | gold_assert(gsym->has_got_offset(got_type)); | |
8191 | value = gsym->got_offset(got_type); | |
8192 | } | |
8193 | else | |
8194 | { | |
dd93cd0a AM |
8195 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
8196 | value = object->local_got_offset(r_sym, got_type); | |
8197 | } | |
8198 | value -= target->got_section()->got_base_offset(object); | |
8199 | } | |
8200 | if (tls_type == tls::TLSOPT_TO_IE) | |
8201 | { | |
8202 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8203 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8204 | { | |
dcfc7dd4 | 8205 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8206 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8207 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
8208 | if (size == 32) | |
8209 | insn |= 32 << 26; // lwz | |
8210 | else | |
8211 | insn |= 58 << 26; // ld | |
8212 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8213 | } | |
8214 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8215 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8216 | } | |
8217 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8218 | { | |
8219 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8220 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8221 | { | |
dcfc7dd4 | 8222 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8223 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8224 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8225 | if (size == 32) |
0f81d3f0 AM |
8226 | insn |= addis_0_2; |
8227 | else | |
8228 | insn |= addis_0_13; | |
dd93cd0a AM |
8229 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8230 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8231 | value = psymval->value(object, rela.get_r_addend()); | |
8232 | } | |
8233 | else | |
8234 | { | |
dcfc7dd4 | 8235 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8236 | Insn insn = nop; |
8237 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8238 | r_type = elfcpp::R_POWERPC_NONE; | |
8239 | } | |
8240 | } | |
8241 | } | |
8242 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8243 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8244 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8245 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8246 | { | |
8247 | // First instruction of a local dynamic sequence, arg setup insn. | |
8248 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8249 | if (tls_type == tls::TLSOPT_NONE) | |
8250 | { | |
8251 | value = target->tlsld_got_offset(); | |
8252 | value -= target->got_section()->got_base_offset(object); | |
8253 | } | |
8254 | else | |
8255 | { | |
8256 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8257 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8258 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8259 | { | |
dcfc7dd4 | 8260 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8261 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8262 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8263 | if (size == 32) |
0f81d3f0 AM |
8264 | insn |= addis_0_2; |
8265 | else | |
8266 | insn |= addis_0_13; | |
dd93cd0a AM |
8267 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8268 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 8269 | value = dtp_offset; |
dd93cd0a AM |
8270 | } |
8271 | else | |
8272 | { | |
dcfc7dd4 | 8273 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8274 | Insn insn = nop; |
8275 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8276 | r_type = elfcpp::R_POWERPC_NONE; | |
8277 | } | |
8278 | } | |
8279 | } | |
8280 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
8281 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
8282 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
8283 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
8284 | { | |
8285 | // Accesses relative to a local dynamic sequence address, | |
8286 | // no optimisation here. | |
8287 | if (gsym != NULL) | |
8288 | { | |
8289 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
8290 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
8291 | } | |
8292 | else | |
8293 | { | |
dd93cd0a AM |
8294 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
8295 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
8296 | } | |
8297 | value -= target->got_section()->got_base_offset(object); | |
8298 | } | |
8299 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8300 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8301 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8302 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8303 | { | |
8304 | // First instruction of initial exec sequence. | |
8305 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8306 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8307 | if (tls_type == tls::TLSOPT_NONE) | |
8308 | { | |
8309 | if (gsym != NULL) | |
8310 | { | |
8311 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
8312 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
8313 | } | |
8314 | else | |
8315 | { | |
dd93cd0a AM |
8316 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
8317 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
8318 | } | |
8319 | value -= target->got_section()->got_base_offset(object); | |
8320 | } | |
8321 | else | |
8322 | { | |
8323 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8324 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8325 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8326 | { | |
dcfc7dd4 | 8327 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8328 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8329 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
8330 | if (size == 32) | |
8331 | insn |= addis_0_2; | |
8332 | else | |
8333 | insn |= addis_0_13; | |
8334 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8335 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8336 | value = psymval->value(object, rela.get_r_addend()); | |
8337 | } | |
8338 | else | |
8339 | { | |
dcfc7dd4 | 8340 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8341 | Insn insn = nop; |
8342 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8343 | r_type = elfcpp::R_POWERPC_NONE; | |
8344 | } | |
8345 | } | |
8346 | } | |
8347 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8348 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8349 | { | |
8350 | // Second instruction of a global dynamic sequence, | |
8351 | // the __tls_get_addr call | |
e3deeb9c | 8352 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8353 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
8354 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8355 | if (tls_type != tls::TLSOPT_NONE) | |
8356 | { | |
8357 | if (tls_type == tls::TLSOPT_TO_IE) | |
8358 | { | |
8359 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8360 | Insn insn = add_3_3_13; | |
8361 | if (size == 32) | |
8362 | insn = add_3_3_2; | |
8363 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8364 | r_type = elfcpp::R_POWERPC_NONE; | |
8365 | } | |
8366 | else | |
8367 | { | |
8368 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8369 | Insn insn = addi_3_3; | |
8370 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8371 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8372 | view += d_offset; |
dd93cd0a AM |
8373 | value = psymval->value(object, rela.get_r_addend()); |
8374 | } | |
e3deeb9c | 8375 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
8376 | } |
8377 | } | |
8378 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8379 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8380 | { | |
8381 | // Second instruction of a local dynamic sequence, | |
8382 | // the __tls_get_addr call | |
e3deeb9c | 8383 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8384 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
8385 | if (tls_type == tls::TLSOPT_TO_LE) | |
8386 | { | |
8387 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8388 | Insn insn = addi_3_3; | |
8389 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 8390 | this->skip_next_tls_get_addr_call(); |
dd93cd0a | 8391 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
dcfc7dd4 | 8392 | view += d_offset; |
7404fe1b | 8393 | value = dtp_offset; |
dd93cd0a AM |
8394 | } |
8395 | } | |
8396 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8397 | { | |
8398 | // Second instruction of an initial exec sequence | |
8399 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8400 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8401 | if (tls_type == tls::TLSOPT_TO_LE) | |
8402 | { | |
8403 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8404 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8405 | unsigned int reg = size == 32 ? 2 : 13; | |
8406 | insn = at_tls_transform(insn, reg); | |
8407 | gold_assert(insn != 0); | |
8408 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8409 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8410 | view += d_offset; |
dd93cd0a AM |
8411 | value = psymval->value(object, rela.get_r_addend()); |
8412 | } | |
8413 | } | |
0cfb0717 | 8414 | else if (!has_stub_value) |
cf43a2fe | 8415 | { |
dd93cd0a | 8416 | Address addend = 0; |
cbcb23fa | 8417 | if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) |
cf43a2fe | 8418 | addend = rela.get_r_addend(); |
c9824451 | 8419 | value = psymval->value(object, addend); |
dd93cd0a | 8420 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
8421 | { |
8422 | if (target->abiversion() >= 2) | |
8423 | { | |
8424 | if (gsym != NULL) | |
8425 | value += object->ppc64_local_entry_offset(gsym); | |
8426 | else | |
8427 | value += object->ppc64_local_entry_offset(r_sym); | |
8428 | } | |
8429 | else | |
1611bc4a AM |
8430 | { |
8431 | unsigned int dest_shndx; | |
8432 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
8433 | &value, &dest_shndx); | |
8434 | } | |
9055360d | 8435 | } |
cbcb23fa | 8436 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
8437 | if (max_branch_offset != 0 |
8438 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
8439 | { | |
8440 | Stub_table<size, big_endian>* stub_table | |
8441 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
8442 | if (stub_table != NULL) |
8443 | { | |
8444 | Address off = stub_table->find_long_branch_entry(object, value); | |
8445 | if (off != invalid_address) | |
0cfb0717 AM |
8446 | { |
8447 | value = (stub_table->stub_address() + stub_table->plt_size() | |
8448 | + off); | |
8449 | has_stub_value = true; | |
8450 | } | |
0cfdc767 | 8451 | } |
ec661b9d | 8452 | } |
42cacb20 DE |
8453 | } |
8454 | ||
42cacb20 DE |
8455 | switch (r_type) |
8456 | { | |
dd93cd0a AM |
8457 | case elfcpp::R_PPC64_REL64: |
8458 | case elfcpp::R_POWERPC_REL32: | |
8459 | case elfcpp::R_POWERPC_REL24: | |
8460 | case elfcpp::R_PPC_PLTREL24: | |
8461 | case elfcpp::R_PPC_LOCAL24PC: | |
8462 | case elfcpp::R_POWERPC_REL16: | |
8463 | case elfcpp::R_POWERPC_REL16_LO: | |
8464 | case elfcpp::R_POWERPC_REL16_HI: | |
8465 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 8466 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a AM |
8467 | case elfcpp::R_POWERPC_REL14: |
8468 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8469 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
8470 | value -= address; | |
8471 | break; | |
8472 | ||
42cacb20 DE |
8473 | case elfcpp::R_PPC64_TOC16: |
8474 | case elfcpp::R_PPC64_TOC16_LO: | |
8475 | case elfcpp::R_PPC64_TOC16_HI: | |
8476 | case elfcpp::R_PPC64_TOC16_HA: | |
8477 | case elfcpp::R_PPC64_TOC16_DS: | |
8478 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 8479 | // Subtract the TOC base address. |
c9269dff | 8480 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 8481 | + object->toc_base_offset()); |
42cacb20 DE |
8482 | break; |
8483 | ||
cf43a2fe AM |
8484 | case elfcpp::R_POWERPC_SECTOFF: |
8485 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
8486 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
8487 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
8488 | case elfcpp::R_PPC64_SECTOFF_DS: | |
8489 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8490 | if (os != NULL) | |
8491 | value -= os->address(); | |
42cacb20 DE |
8492 | break; |
8493 | ||
dd93cd0a AM |
8494 | case elfcpp::R_PPC64_TPREL16_DS: |
8495 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
8496 | case elfcpp::R_PPC64_TPREL16_HIGH: |
8497 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8498 | if (size != 64) |
f9c6b907 | 8499 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 8500 | break; |
d8e90251 | 8501 | // Fall through. |
dd93cd0a AM |
8502 | case elfcpp::R_POWERPC_TPREL16: |
8503 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8504 | case elfcpp::R_POWERPC_TPREL16_HI: | |
8505 | case elfcpp::R_POWERPC_TPREL16_HA: | |
8506 | case elfcpp::R_POWERPC_TPREL: | |
8507 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8508 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8509 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8510 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8511 | // tls symbol values are relative to tls_segment()->vaddr() | |
8512 | value -= tp_offset; | |
8513 | break; | |
8514 | ||
8515 | case elfcpp::R_PPC64_DTPREL16_DS: | |
8516 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
8517 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8518 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8519 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8520 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
8521 | if (size != 64) | |
8522 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
8523 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
8524 | break; | |
d8e90251 | 8525 | // Fall through. |
dd93cd0a AM |
8526 | case elfcpp::R_POWERPC_DTPREL16: |
8527 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8528 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8529 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
8530 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
8531 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8532 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
8533 | // tls symbol values are relative to tls_segment()->vaddr() |
8534 | value -= dtp_offset; | |
8535 | break; | |
8536 | ||
45965137 AM |
8537 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
8538 | if (gsym != NULL) | |
8539 | value += object->ppc64_local_entry_offset(gsym); | |
8540 | else | |
8541 | value += object->ppc64_local_entry_offset(r_sym); | |
8542 | break; | |
8543 | ||
42cacb20 DE |
8544 | default: |
8545 | break; | |
8546 | } | |
8547 | ||
dd93cd0a | 8548 | Insn branch_bit = 0; |
42cacb20 DE |
8549 | switch (r_type) |
8550 | { | |
dd93cd0a AM |
8551 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
8552 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8553 | branch_bit = 1 << 21; | |
d8e90251 | 8554 | // Fall through. |
dd93cd0a AM |
8555 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
8556 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
8557 | { | |
8558 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8559 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8560 | insn &= ~(1 << 21); | |
8561 | insn |= branch_bit; | |
8562 | if (this->is_isa_v2) | |
8563 | { | |
8564 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
8565 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
8566 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
8567 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
8568 | insn |= 0x02 << 21; | |
8569 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
8570 | insn |= 0x08 << 21; | |
8571 | else | |
8572 | break; | |
8573 | } | |
8574 | else | |
8575 | { | |
8576 | // Invert 'y' bit if not the default. | |
8577 | if (static_cast<Signed_address>(value) < 0) | |
8578 | insn ^= 1 << 21; | |
8579 | } | |
8580 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8581 | } | |
8582 | break; | |
8583 | ||
8584 | default: | |
8585 | break; | |
8586 | } | |
8587 | ||
aba6bc71 AM |
8588 | if (size == 64) |
8589 | { | |
aba6bc71 AM |
8590 | switch (r_type) |
8591 | { | |
8592 | default: | |
8593 | break; | |
8594 | ||
5edad15d AM |
8595 | // Multi-instruction sequences that access the GOT/TOC can |
8596 | // be optimized, eg. | |
8597 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
8598 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
8599 | // and | |
8600 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
8601 | // to nop; addi rb,r2,x@toc; | |
8602 | // FIXME: the @got sequence shown above is not yet | |
8603 | // optimized. Note that gcc as of 2017-01-07 doesn't use | |
8604 | // the ELF @got relocs except for TLS, instead using the | |
8605 | // PowerOpen variant of a compiler managed GOT (called TOC). | |
8606 | // The PowerOpen TOC sequence equivalent to the first | |
8607 | // example is optimized. | |
aba6bc71 AM |
8608 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
8609 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8610 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8611 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8612 | case elfcpp::R_POWERPC_GOT16_HA: | |
8613 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 8614 | if (parameters->options().toc_optimize()) |
aba6bc71 | 8615 | { |
dcfc7dd4 | 8616 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 8617 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
8618 | if (r_type == elfcpp::R_PPC64_TOC16_HA |
8619 | && object->make_toc_relative(target, &value)) | |
8620 | { | |
8621 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
8622 | == ((15u << 26) | (2 << 16))); | |
8623 | } | |
8624 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
8625 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8626 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
8627 | { |
8628 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
8629 | return true; | |
8630 | } | |
8631 | } | |
8632 | break; | |
8633 | ||
8634 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8635 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8636 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8637 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8638 | case elfcpp::R_POWERPC_GOT16_LO: | |
8639 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8640 | case elfcpp::R_PPC64_TOC16_LO: | |
8641 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 8642 | if (parameters->options().toc_optimize()) |
aba6bc71 | 8643 | { |
dcfc7dd4 | 8644 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 8645 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
8646 | bool changed = false; |
8647 | if (r_type == elfcpp::R_PPC64_TOC16_LO_DS | |
8648 | && object->make_toc_relative(target, &value)) | |
8649 | { | |
8650 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
8651 | insn ^= (14u << 26) ^ (58u << 26); | |
8652 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
8653 | changed = true; | |
8654 | } | |
8655 | if (ok_lo_toc_insn(insn, r_type) | |
8656 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
8657 | { |
8658 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
8659 | { | |
8660 | // Transform addic to addi when we change reg. | |
8661 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
8662 | insn |= (14u << 26) | (2 << 16); | |
8663 | } | |
8664 | else | |
8665 | { | |
8666 | insn &= ~(0x1f << 16); | |
8667 | insn |= 2 << 16; | |
8668 | } | |
5edad15d | 8669 | changed = true; |
aba6bc71 | 8670 | } |
5edad15d AM |
8671 | if (changed) |
8672 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
8673 | } |
8674 | break; | |
549dba71 AM |
8675 | |
8676 | case elfcpp::R_PPC64_ENTRY: | |
8677 | value = (target->got_section()->output_section()->address() | |
8678 | + object->toc_base_offset()); | |
8679 | if (value + 0x80008000 <= 0xffffffff | |
8680 | && !parameters->options().output_is_position_independent()) | |
8681 | { | |
8682 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8683 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
8684 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
8685 | ||
8686 | if ((insn1 & ~0xfffc) == ld_2_12 | |
8687 | && insn2 == add_2_2_12) | |
8688 | { | |
8689 | insn1 = lis_2 + ha(value); | |
8690 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
8691 | insn2 = addi_2_2 + l(value); | |
8692 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
8693 | return true; | |
8694 | } | |
8695 | } | |
8696 | else | |
8697 | { | |
8698 | value -= address; | |
8699 | if (value + 0x80008000 <= 0xffffffff) | |
8700 | { | |
8701 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8702 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
8703 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
8704 | ||
8705 | if ((insn1 & ~0xfffc) == ld_2_12 | |
8706 | && insn2 == add_2_2_12) | |
8707 | { | |
8708 | insn1 = addis_2_12 + ha(value); | |
8709 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
8710 | insn2 = addi_2_2 + l(value); | |
8711 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
8712 | return true; | |
8713 | } | |
8714 | } | |
8715 | } | |
8716 | break; | |
e3a7574e AM |
8717 | |
8718 | case elfcpp::R_POWERPC_REL16_LO: | |
8719 | // If we are generating a non-PIC executable, edit | |
8720 | // 0: addis 2,12,.TOC.-0b@ha | |
8721 | // addi 2,2,.TOC.-0b@l | |
8722 | // used by ELFv2 global entry points to set up r2, to | |
8723 | // lis 2,.TOC.@ha | |
8724 | // addi 2,2,.TOC.@l | |
8725 | // if .TOC. is in range. */ | |
8726 | if (value + address - 4 + 0x80008000 <= 0xffffffff | |
8727 | && relnum != 0 | |
8728 | && preloc != NULL | |
8729 | && target->abiversion() >= 2 | |
8730 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 8731 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
8732 | && gsym != NULL |
8733 | && strcmp(gsym->name(), ".TOC.") == 0) | |
8734 | { | |
0e123f69 | 8735 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
8736 | Reltype prev_rela(preloc - reloc_size); |
8737 | if ((prev_rela.get_r_info() | |
8738 | == elfcpp::elf_r_info<size>(r_sym, | |
8739 | elfcpp::R_POWERPC_REL16_HA)) | |
8740 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
8741 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
8742 | { | |
dcfc7dd4 | 8743 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
8744 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
8745 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
8746 | ||
8747 | if ((insn1 & 0xffff0000) == addis_2_12 | |
8748 | && (insn2 & 0xffff0000) == addi_2_2) | |
8749 | { | |
8750 | insn1 = lis_2 + ha(value + address - 4); | |
8751 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
8752 | insn2 = addi_2_2 + l(value + address - 4); | |
8753 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
8754 | if (relinfo->rr) | |
8755 | { | |
8756 | relinfo->rr->set_strategy(relnum - 1, | |
8757 | Relocatable_relocs::RELOC_SPECIAL); | |
8758 | relinfo->rr->set_strategy(relnum, | |
8759 | Relocatable_relocs::RELOC_SPECIAL); | |
8760 | } | |
8761 | return true; | |
8762 | } | |
8763 | } | |
8764 | } | |
8765 | break; | |
aba6bc71 AM |
8766 | } |
8767 | } | |
8768 | ||
f4baf0d4 | 8769 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 8770 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
8771 | switch (r_type) |
8772 | { | |
8773 | case elfcpp::R_POWERPC_ADDR32: | |
8774 | case elfcpp::R_POWERPC_UADDR32: | |
8775 | if (size == 64) | |
f4baf0d4 | 8776 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
8777 | break; |
8778 | ||
8779 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 8780 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 8781 | if (size == 64) |
f4baf0d4 | 8782 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
8783 | break; |
8784 | ||
dd93cd0a | 8785 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 8786 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
8787 | break; |
8788 | ||
b80eed39 AM |
8789 | case elfcpp::R_POWERPC_ADDR16: |
8790 | // We really should have three separate relocations, | |
8791 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
8792 | // and one for insns with 16-bit unsigned fields. | |
8793 | overflow = Reloc::CHECK_BITFIELD; | |
8794 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
8795 | overflow = Reloc::CHECK_LOW_INSN; | |
8796 | break; | |
8797 | ||
f9c6b907 AM |
8798 | case elfcpp::R_POWERPC_ADDR16_HI: |
8799 | case elfcpp::R_POWERPC_ADDR16_HA: | |
8800 | case elfcpp::R_POWERPC_GOT16_HI: | |
8801 | case elfcpp::R_POWERPC_GOT16_HA: | |
8802 | case elfcpp::R_POWERPC_PLT16_HI: | |
8803 | case elfcpp::R_POWERPC_PLT16_HA: | |
8804 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
8805 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
8806 | case elfcpp::R_PPC64_TOC16_HI: | |
8807 | case elfcpp::R_PPC64_TOC16_HA: | |
8808 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
8809 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
8810 | case elfcpp::R_POWERPC_TPREL16_HI: | |
8811 | case elfcpp::R_POWERPC_TPREL16_HA: | |
8812 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8813 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
8814 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8815 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8816 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8817 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8818 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8819 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8820 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8821 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8822 | case elfcpp::R_POWERPC_REL16_HI: | |
8823 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
8824 | if (size != 32) |
8825 | overflow = Reloc::CHECK_HIGH_INSN; | |
8826 | break; | |
8827 | ||
dd93cd0a AM |
8828 | case elfcpp::R_POWERPC_REL16: |
8829 | case elfcpp::R_PPC64_TOC16: | |
8830 | case elfcpp::R_POWERPC_GOT16: | |
8831 | case elfcpp::R_POWERPC_SECTOFF: | |
8832 | case elfcpp::R_POWERPC_TPREL16: | |
8833 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
8834 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
8835 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
8836 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8837 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8838 | overflow = Reloc::CHECK_LOW_INSN; | |
8839 | break; | |
8840 | ||
8841 | case elfcpp::R_POWERPC_ADDR24: | |
8842 | case elfcpp::R_POWERPC_ADDR14: | |
8843 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8844 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
8845 | case elfcpp::R_PPC64_ADDR16_DS: | |
8846 | case elfcpp::R_POWERPC_REL24: | |
8847 | case elfcpp::R_PPC_PLTREL24: | |
8848 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
8849 | case elfcpp::R_PPC64_TPREL16_DS: |
8850 | case elfcpp::R_PPC64_DTPREL16_DS: | |
8851 | case elfcpp::R_PPC64_TOC16_DS: | |
8852 | case elfcpp::R_PPC64_GOT16_DS: | |
8853 | case elfcpp::R_PPC64_SECTOFF_DS: | |
8854 | case elfcpp::R_POWERPC_REL14: | |
8855 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8856 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 8857 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 8858 | break; |
dd93cd0a | 8859 | } |
42cacb20 | 8860 | |
dcfc7dd4 | 8861 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
8862 | Insn insn = 0; |
8863 | ||
b80eed39 AM |
8864 | if (overflow == Reloc::CHECK_LOW_INSN |
8865 | || overflow == Reloc::CHECK_HIGH_INSN) | |
8866 | { | |
a680de9a | 8867 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 8868 | |
a47622ac AM |
8869 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
8870 | overflow = Reloc::CHECK_BITFIELD; | |
8871 | else if (overflow == Reloc::CHECK_LOW_INSN | |
8872 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
8873 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
8874 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
8875 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
8876 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
8877 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 8878 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
8879 | else |
8880 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
8881 | } |
8882 | ||
a680de9a | 8883 | bool maybe_dq_reloc = false; |
3ea0a085 | 8884 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 8885 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
8886 | switch (r_type) |
8887 | { | |
8888 | case elfcpp::R_POWERPC_NONE: | |
8889 | case elfcpp::R_POWERPC_TLS: | |
8890 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
8891 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
42cacb20 DE |
8892 | break; |
8893 | ||
8894 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 8895 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 8896 | case elfcpp::R_PPC64_TOC: |
45965137 | 8897 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
8898 | Reloc::addr64(view, value); |
8899 | break; | |
8900 | ||
8901 | case elfcpp::R_POWERPC_TPREL: | |
8902 | case elfcpp::R_POWERPC_DTPREL: | |
8903 | if (size == 64) | |
8904 | Reloc::addr64(view, value); | |
8905 | else | |
3ea0a085 | 8906 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
8907 | break; |
8908 | ||
8909 | case elfcpp::R_PPC64_UADDR64: | |
8910 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
8911 | break; |
8912 | ||
8913 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 8914 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
8915 | break; |
8916 | ||
acc276d8 | 8917 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 8918 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 8919 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
8920 | break; |
8921 | ||
8922 | case elfcpp::R_POWERPC_ADDR24: | |
8923 | case elfcpp::R_POWERPC_REL24: | |
8924 | case elfcpp::R_PPC_PLTREL24: | |
8925 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 8926 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
8927 | break; |
8928 | ||
dd93cd0a AM |
8929 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
8930 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
8931 | case elfcpp::R_POWERPC_GOT_TPREL16: |
8932 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
8933 | if (size == 64) |
8934 | { | |
ec86f434 | 8935 | // On ppc64 these are all ds form |
a680de9a | 8936 | maybe_dq_reloc = true; |
dd93cd0a AM |
8937 | break; |
8938 | } | |
c25aa1e1 | 8939 | // Fall through. |
cf43a2fe | 8940 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 8941 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 8942 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 8943 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 8944 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
8945 | case elfcpp::R_POWERPC_TPREL16: |
8946 | case elfcpp::R_POWERPC_DTPREL16: | |
8947 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8948 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 8949 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 8950 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 8951 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 8952 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 8953 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
8954 | case elfcpp::R_POWERPC_TPREL16_LO: |
8955 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8956 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8957 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
8958 | if (size == 64) |
8959 | status = Reloc::addr16(view, value, overflow); | |
8960 | else | |
8961 | maybe_dq_reloc = true; | |
dd93cd0a AM |
8962 | break; |
8963 | ||
8964 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 8965 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
8966 | break; |
8967 | ||
f9c6b907 AM |
8968 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8969 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8970 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
8971 | if (size == 32) | |
8972 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
8973 | goto unsupp; | |
d8e90251 | 8974 | // Fall through. |
cf43a2fe | 8975 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 8976 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 8977 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 8978 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 8979 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
8980 | case elfcpp::R_POWERPC_TPREL16_HI: |
8981 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8982 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8983 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8984 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8985 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8986 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
8987 | break; |
8988 | ||
f9c6b907 AM |
8989 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
8990 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8991 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8992 | if (size == 32) | |
8993 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
8994 | goto unsupp; | |
d8e90251 | 8995 | // Fall through. |
cf43a2fe | 8996 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 8997 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 8998 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 8999 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 9000 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
9001 | case elfcpp::R_POWERPC_TPREL16_HA: |
9002 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9003 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9004 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9005 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9006 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9007 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
9008 | break; |
9009 | ||
a680de9a PB |
9010 | case elfcpp::R_POWERPC_REL16DX_HA: |
9011 | status = Reloc::addr16dx_ha(view, value, overflow); | |
9012 | break; | |
9013 | ||
dd93cd0a AM |
9014 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
9015 | if (size == 32) | |
9016 | // R_PPC_EMB_NADDR16_LO | |
9017 | goto unsupp; | |
d8e90251 | 9018 | // Fall through. |
dd93cd0a AM |
9019 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
9020 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9021 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
9022 | break; |
9023 | ||
dd93cd0a AM |
9024 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
9025 | if (size == 32) | |
9026 | // R_PPC_EMB_NADDR16_HI | |
9027 | goto unsupp; | |
d8e90251 | 9028 | // Fall through. |
dd93cd0a AM |
9029 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
9030 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9031 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
9032 | break; |
9033 | ||
dd93cd0a AM |
9034 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
9035 | if (size == 32) | |
9036 | // R_PPC_EMB_NADDR16_HA | |
9037 | goto unsupp; | |
d8e90251 | 9038 | // Fall through. |
dd93cd0a AM |
9039 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
9040 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9041 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
9042 | break; |
9043 | ||
dd93cd0a AM |
9044 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
9045 | if (size == 32) | |
9046 | // R_PPC_EMB_SDAI16 | |
9047 | goto unsupp; | |
d8e90251 | 9048 | // Fall through. |
dd93cd0a AM |
9049 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
9050 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9051 | Reloc::addr16_ha3(view, value); | |
9052 | break; | |
9053 | ||
9054 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9055 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
9056 | if (size == 32) | |
9057 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
9058 | goto unsupp; | |
d8e90251 | 9059 | // Fall through. |
dd93cd0a AM |
9060 | case elfcpp::R_PPC64_TPREL16_DS: |
9061 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9062 | if (size == 32) | |
9063 | // R_PPC_TLSGD, R_PPC_TLSLD | |
9064 | break; | |
d8e90251 | 9065 | // Fall through. |
cf43a2fe AM |
9066 | case elfcpp::R_PPC64_ADDR16_DS: |
9067 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
9068 | case elfcpp::R_PPC64_TOC16_DS: |
9069 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
9070 | case elfcpp::R_PPC64_GOT16_DS: |
9071 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9072 | case elfcpp::R_PPC64_SECTOFF_DS: | |
9073 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 9074 | maybe_dq_reloc = true; |
dd93cd0a AM |
9075 | break; |
9076 | ||
9077 | case elfcpp::R_POWERPC_ADDR14: | |
9078 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
9079 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
9080 | case elfcpp::R_POWERPC_REL14: | |
9081 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9082 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 9083 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
9084 | break; |
9085 | ||
9086 | case elfcpp::R_POWERPC_COPY: | |
9087 | case elfcpp::R_POWERPC_GLOB_DAT: | |
9088 | case elfcpp::R_POWERPC_JMP_SLOT: | |
9089 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 9090 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
9091 | case elfcpp::R_PPC64_JMP_IREL: |
9092 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
9093 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9094 | _("unexpected reloc %u in object file"), | |
9095 | r_type); | |
9096 | break; | |
9097 | ||
7e57d19e | 9098 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 9099 | if (size == 32) |
7e57d19e | 9100 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
9101 | goto unsupp; |
9102 | else | |
9103 | { | |
7e57d19e AM |
9104 | Symbol_location loc; |
9105 | loc.object = relinfo->object; | |
9106 | loc.shndx = relinfo->data_shndx; | |
9107 | loc.offset = rela.get_r_offset(); | |
9108 | Tocsave_loc::const_iterator p = target->tocsave_loc().find(loc); | |
9109 | if (p != target->tocsave_loc().end()) | |
9110 | { | |
9111 | // If we've generated plt calls using this tocsave, then | |
9112 | // the nop needs to be changed to save r2. | |
9113 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9114 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
9115 | elfcpp::Swap<32, big_endian>:: | |
9116 | writeval(iview, std_2_1 + target->stk_toc()); | |
9117 | } | |
dd93cd0a AM |
9118 | } |
9119 | break; | |
9120 | ||
9121 | case elfcpp::R_PPC_EMB_SDA2I16: | |
9122 | case elfcpp::R_PPC_EMB_SDA2REL: | |
9123 | if (size == 32) | |
9124 | goto unsupp; | |
9125 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
9126 | break; |
9127 | ||
dd93cd0a AM |
9128 | case elfcpp::R_POWERPC_PLT32: |
9129 | case elfcpp::R_POWERPC_PLTREL32: | |
9130 | case elfcpp::R_POWERPC_PLT16_LO: | |
9131 | case elfcpp::R_POWERPC_PLT16_HI: | |
9132 | case elfcpp::R_POWERPC_PLT16_HA: | |
9133 | case elfcpp::R_PPC_SDAREL16: | |
9134 | case elfcpp::R_POWERPC_ADDR30: | |
9135 | case elfcpp::R_PPC64_PLT64: | |
9136 | case elfcpp::R_PPC64_PLTREL64: | |
9137 | case elfcpp::R_PPC64_PLTGOT16: | |
9138 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
9139 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
9140 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
9141 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
9142 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
9143 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
9144 | case elfcpp::R_PPC_EMB_RELSDA: |
9145 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 9146 | default: |
dd93cd0a | 9147 | unsupp: |
42cacb20 DE |
9148 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9149 | _("unsupported reloc %u"), | |
9150 | r_type); | |
9151 | break; | |
9152 | } | |
a680de9a PB |
9153 | |
9154 | if (maybe_dq_reloc) | |
9155 | { | |
9156 | if (insn == 0) | |
9157 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9158 | ||
9159 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
9160 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
9161 | && (insn & 3) == 1)) | |
9162 | status = Reloc::addr16_dq(view, value, overflow); | |
9163 | else if (size == 64 | |
9164 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
9165 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
9166 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
9167 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
9168 | status = Reloc::addr16_ds(view, value, overflow); | |
9169 | else | |
9170 | status = Reloc::addr16(view, value, overflow); | |
9171 | } | |
9172 | ||
0cfb0717 | 9173 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
9174 | && (has_stub_value |
9175 | || !(gsym != NULL | |
282c9750 | 9176 | && gsym->is_undefined() |
3ffaac20 | 9177 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
9178 | { |
9179 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
9180 | _("relocation overflow")); | |
9181 | if (has_stub_value) | |
9182 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
9183 | } | |
42cacb20 DE |
9184 | |
9185 | return true; | |
9186 | } | |
9187 | ||
42cacb20 DE |
9188 | // Relocate section data. |
9189 | ||
9190 | template<int size, bool big_endian> | |
9191 | void | |
9192 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
9193 | const Relocate_info<size, big_endian>* relinfo, |
9194 | unsigned int sh_type, | |
9195 | const unsigned char* prelocs, | |
9196 | size_t reloc_count, | |
9197 | Output_section* output_section, | |
9198 | bool needs_special_offset_handling, | |
9199 | unsigned char* view, | |
c9269dff | 9200 | Address address, |
d83ce4e3 AM |
9201 | section_size_type view_size, |
9202 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
9203 | { |
9204 | typedef Target_powerpc<size, big_endian> Powerpc; | |
9205 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
9206 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
9207 | Powerpc_comdat_behavior; | |
4d625b70 CC |
9208 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9209 | Classify_reloc; | |
42cacb20 DE |
9210 | |
9211 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9212 | ||
4d625b70 CC |
9213 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
9214 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
9215 | relinfo, |
9216 | this, | |
9217 | prelocs, | |
9218 | reloc_count, | |
9219 | output_section, | |
9220 | needs_special_offset_handling, | |
9221 | view, | |
9222 | address, | |
364c7fa5 ILT |
9223 | view_size, |
9224 | reloc_symbol_changes); | |
42cacb20 DE |
9225 | } |
9226 | ||
4d625b70 | 9227 | template<int size, bool big_endian> |
cf43a2fe | 9228 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 9229 | { |
cf43a2fe | 9230 | public: |
0e123f69 AM |
9231 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
9232 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
9233 | static const int sh_type = elfcpp::SHT_RELA; |
9234 | ||
9235 | // Return the symbol referred to by the relocation. | |
9236 | static inline unsigned int | |
9237 | get_r_sym(const Reltype* reloc) | |
9238 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
9239 | ||
9240 | // Return the type of the relocation. | |
9241 | static inline unsigned int | |
9242 | get_r_type(const Reltype* reloc) | |
9243 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
9244 | ||
cf43a2fe AM |
9245 | // Return the strategy to use for a local symbol which is not a |
9246 | // section symbol, given the relocation type. | |
9247 | inline Relocatable_relocs::Reloc_strategy | |
9248 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
9249 | { | |
9250 | if (r_type == 0 && r_sym == 0) | |
9251 | return Relocatable_relocs::RELOC_DISCARD; | |
9252 | return Relocatable_relocs::RELOC_COPY; | |
9253 | } | |
9254 | ||
9255 | // Return the strategy to use for a local symbol which is a section | |
9256 | // symbol, given the relocation type. | |
9257 | inline Relocatable_relocs::Reloc_strategy | |
9258 | local_section_strategy(unsigned int, Relobj*) | |
9259 | { | |
9260 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
9261 | } | |
9262 | ||
9263 | // Return the strategy to use for a global symbol, given the | |
9264 | // relocation type, the object, and the symbol index. | |
9265 | inline Relocatable_relocs::Reloc_strategy | |
9266 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
9267 | { | |
9268 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
9269 | return Relocatable_relocs::RELOC_SPECIAL; | |
9270 | return Relocatable_relocs::RELOC_COPY; | |
9271 | } | |
9272 | }; | |
42cacb20 DE |
9273 | |
9274 | // Scan the relocs during a relocatable link. | |
9275 | ||
9276 | template<int size, bool big_endian> | |
9277 | void | |
9278 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
9279 | Symbol_table* symtab, |
9280 | Layout* layout, | |
9281 | Sized_relobj_file<size, big_endian>* object, | |
9282 | unsigned int data_shndx, | |
9283 | unsigned int sh_type, | |
9284 | const unsigned char* prelocs, | |
9285 | size_t reloc_count, | |
9286 | Output_section* output_section, | |
9287 | bool needs_special_offset_handling, | |
9288 | size_t local_symbol_count, | |
9289 | const unsigned char* plocal_symbols, | |
9290 | Relocatable_relocs* rr) | |
42cacb20 | 9291 | { |
4d625b70 CC |
9292 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
9293 | ||
42cacb20 DE |
9294 | gold_assert(sh_type == elfcpp::SHT_RELA); |
9295 | ||
4d625b70 | 9296 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
9297 | symtab, |
9298 | layout, | |
9299 | object, | |
9300 | data_shndx, | |
9301 | prelocs, | |
9302 | reloc_count, | |
9303 | output_section, | |
9304 | needs_special_offset_handling, | |
9305 | local_symbol_count, | |
9306 | plocal_symbols, | |
9307 | rr); | |
9308 | } | |
9309 | ||
4d625b70 CC |
9310 | // Scan the relocs for --emit-relocs. |
9311 | ||
9312 | template<int size, bool big_endian> | |
9313 | void | |
9314 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
9315 | Symbol_table* symtab, | |
9316 | Layout* layout, | |
9317 | Sized_relobj_file<size, big_endian>* object, | |
9318 | unsigned int data_shndx, | |
9319 | unsigned int sh_type, | |
9320 | const unsigned char* prelocs, | |
9321 | size_t reloc_count, | |
9322 | Output_section* output_section, | |
9323 | bool needs_special_offset_handling, | |
9324 | size_t local_symbol_count, | |
9325 | const unsigned char* plocal_syms, | |
9326 | Relocatable_relocs* rr) | |
9327 | { | |
9328 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
9329 | Classify_reloc; | |
9330 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
9331 | Emit_relocs_strategy; | |
9332 | ||
9333 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9334 | ||
9335 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
9336 | symtab, | |
9337 | layout, | |
9338 | object, | |
9339 | data_shndx, | |
9340 | prelocs, | |
9341 | reloc_count, | |
9342 | output_section, | |
9343 | needs_special_offset_handling, | |
9344 | local_symbol_count, | |
9345 | plocal_syms, | |
9346 | rr); | |
9347 | } | |
9348 | ||
7404fe1b | 9349 | // Emit relocations for a section. |
dd93cd0a AM |
9350 | // This is a modified version of the function by the same name in |
9351 | // target-reloc.h. Using relocate_special_relocatable for | |
9352 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
9353 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
9354 | |
9355 | template<int size, bool big_endian> | |
9356 | void | |
7404fe1b | 9357 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
9358 | const Relocate_info<size, big_endian>* relinfo, |
9359 | unsigned int sh_type, | |
9360 | const unsigned char* prelocs, | |
9361 | size_t reloc_count, | |
9362 | Output_section* output_section, | |
62fe925a | 9363 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 9364 | unsigned char*, |
dd93cd0a | 9365 | Address view_address, |
cf43a2fe | 9366 | section_size_type, |
42cacb20 DE |
9367 | unsigned char* reloc_view, |
9368 | section_size_type reloc_view_size) | |
9369 | { | |
9370 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9371 | ||
0e123f69 AM |
9372 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
9373 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
9374 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
9375 | // Offset from start of insn to d-field reloc. |
9376 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
9377 | |
9378 | Powerpc_relobj<size, big_endian>* const object | |
9379 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
9380 | const unsigned int local_count = object->local_symbol_count(); | |
9381 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 9382 | Address got2_addend = 0; |
cf43a2fe | 9383 | if (got2_shndx != 0) |
c9269dff AM |
9384 | { |
9385 | got2_addend = object->get_output_section_offset(got2_shndx); | |
9386 | gold_assert(got2_addend != invalid_address); | |
9387 | } | |
cf43a2fe AM |
9388 | |
9389 | unsigned char* pwrite = reloc_view; | |
7404fe1b | 9390 | bool zap_next = false; |
cf43a2fe AM |
9391 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
9392 | { | |
91a65d2f | 9393 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
9394 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
9395 | continue; | |
9396 | ||
9397 | Reltype reloc(prelocs); | |
9398 | Reltype_write reloc_write(pwrite); | |
9399 | ||
7404fe1b | 9400 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 9401 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
9402 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
9403 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
9404 | const unsigned int orig_r_sym = r_sym; | |
9405 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
9406 | = reloc.get_r_addend(); | |
9407 | const Symbol* gsym = NULL; | |
9408 | ||
9409 | if (zap_next) | |
9410 | { | |
9411 | // We could arrange to discard these and other relocs for | |
9412 | // tls optimised sequences in the strategy methods, but for | |
9413 | // now do as BFD ld does. | |
9414 | r_type = elfcpp::R_POWERPC_NONE; | |
9415 | zap_next = false; | |
9416 | } | |
cf43a2fe AM |
9417 | |
9418 | // Get the new symbol index. | |
9215b98b | 9419 | Output_section* os = NULL; |
cf43a2fe AM |
9420 | if (r_sym < local_count) |
9421 | { | |
9422 | switch (strategy) | |
9423 | { | |
9424 | case Relocatable_relocs::RELOC_COPY: | |
9425 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 9426 | if (r_sym != 0) |
dd93cd0a | 9427 | { |
7404fe1b AM |
9428 | r_sym = object->symtab_index(r_sym); |
9429 | gold_assert(r_sym != -1U); | |
dd93cd0a | 9430 | } |
cf43a2fe AM |
9431 | break; |
9432 | ||
9433 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
9434 | { | |
9435 | // We are adjusting a section symbol. We need to find | |
9436 | // the symbol table index of the section symbol for | |
9437 | // the output section corresponding to input section | |
9438 | // in which this symbol is defined. | |
9439 | gold_assert(r_sym < local_count); | |
9440 | bool is_ordinary; | |
9441 | unsigned int shndx = | |
9442 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
9443 | gold_assert(is_ordinary); | |
9215b98b | 9444 | os = object->output_section(shndx); |
cf43a2fe AM |
9445 | gold_assert(os != NULL); |
9446 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 9447 | r_sym = os->symtab_index(); |
cf43a2fe AM |
9448 | } |
9449 | break; | |
9450 | ||
9451 | default: | |
9452 | gold_unreachable(); | |
9453 | } | |
9454 | } | |
9455 | else | |
9456 | { | |
7404fe1b | 9457 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
9458 | gold_assert(gsym != NULL); |
9459 | if (gsym->is_forwarder()) | |
9460 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
9461 | ||
9462 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 9463 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
9464 | } |
9465 | ||
9466 | // Get the new offset--the location in the output section where | |
9467 | // this relocation should be applied. | |
cf43a2fe | 9468 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 9469 | offset += offset_in_output_section; |
cf43a2fe AM |
9470 | else |
9471 | { | |
c9269dff AM |
9472 | section_offset_type sot_offset = |
9473 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 9474 | section_offset_type new_sot_offset = |
c9269dff AM |
9475 | output_section->output_offset(object, relinfo->data_shndx, |
9476 | sot_offset); | |
cf43a2fe | 9477 | gold_assert(new_sot_offset != -1); |
7404fe1b | 9478 | offset = new_sot_offset; |
cf43a2fe AM |
9479 | } |
9480 | ||
dd93cd0a AM |
9481 | // In an object file, r_offset is an offset within the section. |
9482 | // In an executable or dynamic object, generated by | |
9483 | // --emit-relocs, r_offset is an absolute address. | |
7404fe1b | 9484 | if (!parameters->options().relocatable()) |
dd93cd0a | 9485 | { |
7404fe1b | 9486 | offset += view_address; |
dd93cd0a | 9487 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 9488 | offset -= offset_in_output_section; |
dd93cd0a AM |
9489 | } |
9490 | ||
cf43a2fe | 9491 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
9492 | if (strategy == Relocatable_relocs::RELOC_COPY) |
9493 | ; | |
9494 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
9495 | { | |
7404fe1b | 9496 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
9215b98b AM |
9497 | gold_assert(os != NULL); |
9498 | addend = psymval->value(object, addend) - os->address(); | |
cf43a2fe AM |
9499 | } |
9500 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
9501 | { | |
e3a7574e AM |
9502 | if (size == 32) |
9503 | { | |
9504 | if (addend >= 32768) | |
9505 | addend += got2_addend; | |
9506 | } | |
9507 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
9508 | { | |
9509 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 9510 | addend -= d_offset; |
e3a7574e AM |
9511 | } |
9512 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
9513 | { | |
9514 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 9515 | addend -= d_offset + 4; |
e3a7574e | 9516 | } |
cf43a2fe AM |
9517 | } |
9518 | else | |
9519 | gold_unreachable(); | |
9520 | ||
7404fe1b AM |
9521 | if (!parameters->options().relocatable()) |
9522 | { | |
9523 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
9524 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
9525 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
9526 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
9527 | { | |
9528 | // First instruction of a global dynamic sequence, | |
9529 | // arg setup insn. | |
9530 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
9531 | switch (this->optimize_tls_gd(final)) | |
9532 | { | |
9533 | case tls::TLSOPT_TO_IE: | |
9534 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
9535 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
9536 | break; | |
9537 | case tls::TLSOPT_TO_LE: | |
9538 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
9539 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
9540 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
9541 | else | |
9542 | { | |
9543 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 9544 | offset -= d_offset; |
7404fe1b AM |
9545 | } |
9546 | break; | |
9547 | default: | |
9548 | break; | |
9549 | } | |
9550 | } | |
9551 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
9552 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
9553 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
9554 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
9555 | { | |
9556 | // First instruction of a local dynamic sequence, | |
9557 | // arg setup insn. | |
9558 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
9559 | { | |
9560 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
9561 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
9562 | { | |
9563 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
9564 | const Output_section* os = relinfo->layout->tls_segment() | |
9565 | ->first_section(); | |
9566 | gold_assert(os != NULL); | |
9567 | gold_assert(os->needs_symtab_index()); | |
9568 | r_sym = os->symtab_index(); | |
9569 | addend = dtp_offset; | |
9570 | } | |
9571 | else | |
9572 | { | |
9573 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 9574 | offset -= d_offset; |
7404fe1b AM |
9575 | } |
9576 | } | |
9577 | } | |
9578 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
9579 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
9580 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
9581 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
9582 | { | |
9583 | // First instruction of initial exec sequence. | |
9584 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
9585 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
9586 | { | |
9587 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
9588 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
9589 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
9590 | else | |
9591 | { | |
9592 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 9593 | offset -= d_offset; |
7404fe1b AM |
9594 | } |
9595 | } | |
9596 | } | |
9597 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
9598 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
9599 | { | |
9600 | // Second instruction of a global dynamic sequence, | |
9601 | // the __tls_get_addr call | |
9602 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
9603 | switch (this->optimize_tls_gd(final)) | |
9604 | { | |
9605 | case tls::TLSOPT_TO_IE: | |
9606 | r_type = elfcpp::R_POWERPC_NONE; | |
9607 | zap_next = true; | |
9608 | break; | |
9609 | case tls::TLSOPT_TO_LE: | |
9610 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 9611 | offset += d_offset; |
7404fe1b AM |
9612 | zap_next = true; |
9613 | break; | |
9614 | default: | |
9615 | break; | |
9616 | } | |
9617 | } | |
9618 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
9619 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
9620 | { | |
9621 | // Second instruction of a local dynamic sequence, | |
9622 | // the __tls_get_addr call | |
9623 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
9624 | { | |
9625 | const Output_section* os = relinfo->layout->tls_segment() | |
9626 | ->first_section(); | |
9627 | gold_assert(os != NULL); | |
9628 | gold_assert(os->needs_symtab_index()); | |
9629 | r_sym = os->symtab_index(); | |
9630 | addend = dtp_offset; | |
9631 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 9632 | offset += d_offset; |
7404fe1b AM |
9633 | zap_next = true; |
9634 | } | |
9635 | } | |
9636 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
9637 | { | |
9638 | // Second instruction of an initial exec sequence | |
9639 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
9640 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
9641 | { | |
9642 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 9643 | offset += d_offset; |
7404fe1b AM |
9644 | } |
9645 | } | |
9646 | } | |
9647 | ||
9648 | reloc_write.put_r_offset(offset); | |
9649 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
9650 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
9651 | |
9652 | pwrite += reloc_size; | |
9653 | } | |
9654 | ||
9655 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
9656 | == reloc_view_size); | |
42cacb20 DE |
9657 | } |
9658 | ||
ec661b9d | 9659 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
9660 | // treatment. This is how we support equality comparisons of function |
9661 | // pointers across shared library boundaries, as described in the | |
9662 | // processor specific ABI supplement. | |
9663 | ||
9664 | template<int size, bool big_endian> | |
9665 | uint64_t | |
9666 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
9667 | { | |
cf43a2fe AM |
9668 | if (size == 32) |
9669 | { | |
9670 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
9671 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
9672 | p != this->stub_tables_.end(); | |
9673 | ++p) | |
9674 | { | |
7e57d19e AM |
9675 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
9676 | = (*p)->find_plt_call_entry(gsym); | |
9677 | if (ent != NULL) | |
9678 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 9679 | } |
c9824451 | 9680 | } |
9055360d AM |
9681 | else if (this->abiversion() >= 2) |
9682 | { | |
faa2211d AM |
9683 | Address off = this->glink_section()->find_global_entry(gsym); |
9684 | if (off != invalid_address) | |
9055360d AM |
9685 | return this->glink_section()->global_entry_address() + off; |
9686 | } | |
ec661b9d | 9687 | gold_unreachable(); |
c9824451 AM |
9688 | } |
9689 | ||
9690 | // Return the PLT address to use for a local symbol. | |
9691 | template<int size, bool big_endian> | |
9692 | uint64_t | |
9693 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
9694 | const Relobj* object, | |
9695 | unsigned int symndx) const | |
9696 | { | |
9697 | if (size == 32) | |
9698 | { | |
9699 | const Sized_relobj<size, big_endian>* relobj | |
9700 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
9701 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
9702 | p != this->stub_tables_.end(); | |
9703 | ++p) | |
9704 | { | |
7e57d19e AM |
9705 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
9706 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
9707 | if (ent != NULL) | |
9708 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 9709 | } |
c9824451 | 9710 | } |
ec661b9d | 9711 | gold_unreachable(); |
c9824451 AM |
9712 | } |
9713 | ||
9714 | // Return the PLT address to use for a global symbol. | |
9715 | template<int size, bool big_endian> | |
9716 | uint64_t | |
9717 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
9718 | const Symbol* gsym) const | |
9719 | { | |
9720 | if (size == 32) | |
9721 | { | |
ec661b9d AM |
9722 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
9723 | p != this->stub_tables_.end(); | |
9724 | ++p) | |
9725 | { | |
7e57d19e AM |
9726 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
9727 | = (*p)->find_plt_call_entry(gsym); | |
9728 | if (ent != NULL) | |
9729 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 9730 | } |
cf43a2fe | 9731 | } |
9055360d AM |
9732 | else if (this->abiversion() >= 2) |
9733 | { | |
faa2211d AM |
9734 | Address off = this->glink_section()->find_global_entry(gsym); |
9735 | if (off != invalid_address) | |
9055360d AM |
9736 | return this->glink_section()->global_entry_address() + off; |
9737 | } | |
ec661b9d | 9738 | gold_unreachable(); |
42cacb20 DE |
9739 | } |
9740 | ||
bd73a62d AM |
9741 | // Return the offset to use for the GOT_INDX'th got entry which is |
9742 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
9743 | template<int size, bool big_endian> | |
9744 | int64_t | |
9745 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
9746 | const Relobj* object, | |
9747 | unsigned int symndx, | |
9748 | unsigned int got_indx) const | |
9749 | { | |
9750 | const Powerpc_relobj<size, big_endian>* ppc_object | |
9751 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
9752 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
9753 | { | |
9754 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
9755 | got_type <= GOT_TYPE_TPREL; | |
9756 | got_type = Got_type(got_type + 1)) | |
9757 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
9758 | { | |
9759 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
9760 | if (got_type == GOT_TYPE_TLSGD) | |
9761 | off += size / 8; | |
9762 | if (off == got_indx * (size / 8)) | |
9763 | { | |
9764 | if (got_type == GOT_TYPE_TPREL) | |
9765 | return -tp_offset; | |
9766 | else | |
9767 | return -dtp_offset; | |
9768 | } | |
9769 | } | |
9770 | } | |
9771 | gold_unreachable(); | |
9772 | } | |
9773 | ||
9774 | // Return the offset to use for the GOT_INDX'th got entry which is | |
9775 | // for global tls symbol GSYM. | |
9776 | template<int size, bool big_endian> | |
9777 | int64_t | |
9778 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
9779 | Symbol* gsym, | |
9780 | unsigned int got_indx) const | |
9781 | { | |
9782 | if (gsym->type() == elfcpp::STT_TLS) | |
9783 | { | |
9784 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
9785 | got_type <= GOT_TYPE_TPREL; | |
9786 | got_type = Got_type(got_type + 1)) | |
9787 | if (gsym->has_got_offset(got_type)) | |
9788 | { | |
9789 | unsigned int off = gsym->got_offset(got_type); | |
9790 | if (got_type == GOT_TYPE_TLSGD) | |
9791 | off += size / 8; | |
9792 | if (off == got_indx * (size / 8)) | |
9793 | { | |
9794 | if (got_type == GOT_TYPE_TPREL) | |
9795 | return -tp_offset; | |
9796 | else | |
9797 | return -dtp_offset; | |
9798 | } | |
9799 | } | |
9800 | } | |
9801 | gold_unreachable(); | |
9802 | } | |
9803 | ||
42cacb20 DE |
9804 | // The selector for powerpc object files. |
9805 | ||
9806 | template<int size, bool big_endian> | |
9807 | class Target_selector_powerpc : public Target_selector | |
9808 | { | |
9809 | public: | |
9810 | Target_selector_powerpc() | |
edc27beb AM |
9811 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
9812 | size, big_endian, | |
03ef7571 ILT |
9813 | (size == 64 |
9814 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
9815 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
9816 | (size == 64 | |
9817 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
9818 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
9819 | { } |
9820 | ||
2e702c99 RM |
9821 | virtual Target* |
9822 | do_instantiate_target() | |
7f055c20 | 9823 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
9824 | }; |
9825 | ||
9826 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
9827 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
9828 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
9829 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
9830 | ||
decdd3bc AM |
9831 | // Instantiate these constants for -O0 |
9832 | template<int size, bool big_endian> | |
9833 | const int Output_data_glink<size, big_endian>::pltresolve_size; | |
9834 | template<int size, bool big_endian> | |
9055360d AM |
9835 | const typename Output_data_glink<size, big_endian>::Address |
9836 | Output_data_glink<size, big_endian>::invalid_address; | |
9837 | template<int size, bool big_endian> | |
decdd3bc AM |
9838 | const typename Stub_table<size, big_endian>::Address |
9839 | Stub_table<size, big_endian>::invalid_address; | |
9840 | template<int size, bool big_endian> | |
9841 | const typename Target_powerpc<size, big_endian>::Address | |
9842 | Target_powerpc<size, big_endian>::invalid_address; | |
9843 | ||
42cacb20 | 9844 | } // End anonymous namespace. |