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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
219d1afa | 3 | // Copyright (C) 2008-2018 Free Software Foundation, Inc. |
42cacb20 DE |
4 | // Written by David S. Miller <davem@davemloft.net> |
5 | // and David Edelsohn <edelsohn@gnu.org> | |
6 | ||
7 | // This file is part of gold. | |
8 | ||
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; either version 3 of the License, or | |
12 | // (at your option) any later version. | |
13 | ||
14 | // This program is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License | |
20 | // along with this program; if not, write to the Free Software | |
21 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | // MA 02110-1301, USA. | |
23 | ||
24 | #include "gold.h" | |
25 | ||
dc3714f3 | 26 | #include <set> |
ec661b9d | 27 | #include <algorithm> |
42cacb20 | 28 | #include "elfcpp.h" |
9d5781f8 | 29 | #include "dwarf.h" |
42cacb20 DE |
30 | #include "parameters.h" |
31 | #include "reloc.h" | |
32 | #include "powerpc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
37 | #include "copy-relocs.h" | |
38 | #include "target.h" | |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
f345227a | 43 | #include "gc.h" |
42cacb20 DE |
44 | |
45 | namespace | |
46 | { | |
47 | ||
48 | using namespace gold; | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | class Output_data_plt_powerpc; | |
52 | ||
ec661b9d AM |
53 | template<int size, bool big_endian> |
54 | class Output_data_brlt_powerpc; | |
55 | ||
cf43a2fe AM |
56 | template<int size, bool big_endian> |
57 | class Output_data_got_powerpc; | |
58 | ||
59 | template<int size, bool big_endian> | |
60 | class Output_data_glink; | |
61 | ||
ec661b9d AM |
62 | template<int size, bool big_endian> |
63 | class Stub_table; | |
64 | ||
d49044c7 AM |
65 | template<int size, bool big_endian> |
66 | class Output_data_save_res; | |
67 | ||
a3e60ddb AM |
68 | template<int size, bool big_endian> |
69 | class Target_powerpc; | |
70 | ||
71 | struct Stub_table_owner | |
72 | { | |
dc60b26d AM |
73 | Stub_table_owner() |
74 | : output_section(NULL), owner(NULL) | |
75 | { } | |
76 | ||
a3e60ddb AM |
77 | Output_section* output_section; |
78 | const Output_section::Input_section* owner; | |
79 | }; | |
80 | ||
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), | |
34e0882b | 616 | has_tls_get_addr_opt_(false), |
7ee7ff70 | 617 | relax_failed_(false), relax_fail_count_(0), |
34e0882b AM |
618 | stub_group_size_(0), savres_section_(0), |
619 | tls_get_addr_(NULL), tls_get_addr_opt_(NULL) | |
42cacb20 DE |
620 | { |
621 | } | |
622 | ||
2e702c99 | 623 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
624 | // garbage collection. |
625 | void | |
ad0f2072 | 626 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
627 | Layout* layout, |
628 | Sized_relobj_file<size, big_endian>* object, | |
629 | unsigned int data_shndx, | |
630 | unsigned int sh_type, | |
631 | const unsigned char* prelocs, | |
632 | size_t reloc_count, | |
633 | Output_section* output_section, | |
634 | bool needs_special_offset_handling, | |
635 | size_t local_symbol_count, | |
636 | const unsigned char* plocal_symbols); | |
6d03d481 | 637 | |
42cacb20 DE |
638 | // Scan the relocations to look for symbol adjustments. |
639 | void | |
ad0f2072 | 640 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 641 | Layout* layout, |
6fa2a40b | 642 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
643 | unsigned int data_shndx, |
644 | unsigned int sh_type, | |
645 | const unsigned char* prelocs, | |
646 | size_t reloc_count, | |
647 | Output_section* output_section, | |
648 | bool needs_special_offset_handling, | |
649 | size_t local_symbol_count, | |
650 | const unsigned char* plocal_symbols); | |
921b5322 AM |
651 | |
652 | // Map input .toc section to output .got section. | |
653 | const char* | |
654 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
655 | { | |
656 | if (size == 64 && strcmp(name, ".toc") == 0) | |
657 | { | |
658 | *plen = 4; | |
659 | return ".got"; | |
660 | } | |
661 | return NULL; | |
662 | } | |
663 | ||
f3a0ed29 AM |
664 | // Provide linker defined save/restore functions. |
665 | void | |
666 | define_save_restore_funcs(Layout*, Symbol_table*); | |
667 | ||
ec661b9d AM |
668 | // No stubs unless a final link. |
669 | bool | |
670 | do_may_relax() const | |
671 | { return !parameters->options().relocatable(); } | |
672 | ||
673 | bool | |
674 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
675 | ||
9d5781f8 AM |
676 | void |
677 | do_plt_fde_location(const Output_data*, unsigned char*, | |
678 | uint64_t*, off_t*) const; | |
679 | ||
ec661b9d AM |
680 | // Stash info about branches, for stub generation. |
681 | void | |
682 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
683 | unsigned int data_shndx, Address r_offset, | |
684 | unsigned int r_type, unsigned int r_sym, Address addend) | |
685 | { | |
686 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
687 | this->branch_info_.push_back(info); | |
688 | if (r_type == elfcpp::R_POWERPC_REL14 | |
689 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
690 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
691 | ppc_object->set_has_14bit_branch(data_shndx); | |
692 | } | |
693 | ||
7e57d19e AM |
694 | // Return whether the last branch is a plt call, and if so, mark the |
695 | // branch as having an R_PPC64_TOCSAVE. | |
696 | bool | |
697 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
698 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
699 | { | |
700 | return (size == 64 | |
701 | && !this->branch_info_.empty() | |
702 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
703 | r_offset, this, symtab)); | |
704 | } | |
705 | ||
706 | // Say the given location, that of a nop in a function prologue with | |
707 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
708 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
709 | void | |
710 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
711 | unsigned int shndx, Address offset) | |
712 | { | |
713 | Symbol_location loc; | |
714 | loc.object = ppc_object; | |
715 | loc.shndx = shndx; | |
716 | loc.offset = offset; | |
717 | this->tocsave_loc_.insert(loc); | |
718 | } | |
719 | ||
720 | // Accessor | |
721 | const Tocsave_loc | |
722 | tocsave_loc() const | |
723 | { | |
724 | return this->tocsave_loc_; | |
725 | } | |
726 | ||
f43ba157 AM |
727 | void |
728 | do_define_standard_symbols(Symbol_table*, Layout*); | |
729 | ||
42cacb20 DE |
730 | // Finalize the sections. |
731 | void | |
f59f41f3 | 732 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
733 | |
734 | // Return the value to use for a dynamic which requires special | |
735 | // treatment. | |
736 | uint64_t | |
737 | do_dynsym_value(const Symbol*) const; | |
738 | ||
c9824451 AM |
739 | // Return the PLT address to use for a local symbol. |
740 | uint64_t | |
741 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
742 | ||
743 | // Return the PLT address to use for a global symbol. | |
744 | uint64_t | |
745 | do_plt_address_for_global(const Symbol*) const; | |
746 | ||
bd73a62d AM |
747 | // Return the offset to use for the GOT_INDX'th got entry which is |
748 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
749 | int64_t | |
750 | do_tls_offset_for_local(const Relobj* object, | |
751 | unsigned int symndx, | |
752 | unsigned int got_indx) const; | |
753 | ||
754 | // Return the offset to use for the GOT_INDX'th got entry which is | |
755 | // for global tls symbol GSYM. | |
756 | int64_t | |
757 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
758 | ||
dc3714f3 AM |
759 | void |
760 | do_function_location(Symbol_location*) const; | |
761 | ||
4d9aa155 AM |
762 | bool |
763 | do_can_check_for_function_pointers() const | |
764 | { return true; } | |
765 | ||
bbec1a5d AM |
766 | // Adjust -fsplit-stack code which calls non-split-stack code. |
767 | void | |
768 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
769 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 770 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
771 | unsigned char* view, section_size_type view_size, |
772 | std::string* from, std::string* to) const; | |
773 | ||
42cacb20 DE |
774 | // Relocate a section. |
775 | void | |
776 | relocate_section(const Relocate_info<size, big_endian>*, | |
777 | unsigned int sh_type, | |
778 | const unsigned char* prelocs, | |
779 | size_t reloc_count, | |
780 | Output_section* output_section, | |
781 | bool needs_special_offset_handling, | |
782 | unsigned char* view, | |
c9269dff | 783 | Address view_address, |
364c7fa5 ILT |
784 | section_size_type view_size, |
785 | const Reloc_symbol_changes*); | |
42cacb20 DE |
786 | |
787 | // Scan the relocs during a relocatable link. | |
788 | void | |
ad0f2072 | 789 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 790 | Layout* layout, |
6fa2a40b | 791 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
792 | unsigned int data_shndx, |
793 | unsigned int sh_type, | |
794 | const unsigned char* prelocs, | |
795 | size_t reloc_count, | |
796 | Output_section* output_section, | |
797 | bool needs_special_offset_handling, | |
798 | size_t local_symbol_count, | |
799 | const unsigned char* plocal_symbols, | |
800 | Relocatable_relocs*); | |
801 | ||
4d625b70 CC |
802 | // Scan the relocs for --emit-relocs. |
803 | void | |
804 | emit_relocs_scan(Symbol_table* symtab, | |
805 | Layout* layout, | |
806 | Sized_relobj_file<size, big_endian>* object, | |
807 | unsigned int data_shndx, | |
808 | unsigned int sh_type, | |
809 | const unsigned char* prelocs, | |
810 | size_t reloc_count, | |
811 | Output_section* output_section, | |
812 | bool needs_special_offset_handling, | |
813 | size_t local_symbol_count, | |
814 | const unsigned char* plocal_syms, | |
815 | Relocatable_relocs* rr); | |
816 | ||
7404fe1b | 817 | // Emit relocations for a section. |
42cacb20 | 818 | void |
7404fe1b AM |
819 | relocate_relocs(const Relocate_info<size, big_endian>*, |
820 | unsigned int sh_type, | |
821 | const unsigned char* prelocs, | |
822 | size_t reloc_count, | |
823 | Output_section* output_section, | |
62fe925a RM |
824 | typename elfcpp::Elf_types<size>::Elf_Off |
825 | offset_in_output_section, | |
7404fe1b AM |
826 | unsigned char*, |
827 | Address view_address, | |
828 | section_size_type, | |
829 | unsigned char* reloc_view, | |
830 | section_size_type reloc_view_size); | |
42cacb20 DE |
831 | |
832 | // Return whether SYM is defined by the ABI. | |
833 | bool | |
9c2d0ef9 | 834 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 835 | { |
cf43a2fe | 836 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
837 | } |
838 | ||
839 | // Return the size of the GOT section. | |
840 | section_size_type | |
0e70b911 | 841 | got_size() const |
42cacb20 DE |
842 | { |
843 | gold_assert(this->got_ != NULL); | |
844 | return this->got_->data_size(); | |
845 | } | |
846 | ||
cf43a2fe AM |
847 | // Get the PLT section. |
848 | const Output_data_plt_powerpc<size, big_endian>* | |
849 | plt_section() const | |
850 | { | |
851 | gold_assert(this->plt_ != NULL); | |
852 | return this->plt_; | |
853 | } | |
854 | ||
e5d5f5ed AM |
855 | // Get the IPLT section. |
856 | const Output_data_plt_powerpc<size, big_endian>* | |
857 | iplt_section() const | |
858 | { | |
859 | gold_assert(this->iplt_ != NULL); | |
860 | return this->iplt_; | |
861 | } | |
862 | ||
cf43a2fe AM |
863 | // Get the .glink section. |
864 | const Output_data_glink<size, big_endian>* | |
865 | glink_section() const | |
866 | { | |
867 | gold_assert(this->glink_ != NULL); | |
868 | return this->glink_; | |
869 | } | |
870 | ||
9055360d AM |
871 | Output_data_glink<size, big_endian>* |
872 | glink_section() | |
873 | { | |
874 | gold_assert(this->glink_ != NULL); | |
875 | return this->glink_; | |
876 | } | |
877 | ||
9d5781f8 AM |
878 | bool has_glink() const |
879 | { return this->glink_ != NULL; } | |
880 | ||
cf43a2fe AM |
881 | // Get the GOT section. |
882 | const Output_data_got_powerpc<size, big_endian>* | |
883 | got_section() const | |
884 | { | |
885 | gold_assert(this->got_ != NULL); | |
886 | return this->got_; | |
887 | } | |
888 | ||
26a4e9cb AM |
889 | // Get the GOT section, creating it if necessary. |
890 | Output_data_got_powerpc<size, big_endian>* | |
891 | got_section(Symbol_table*, Layout*); | |
892 | ||
cf43a2fe AM |
893 | Object* |
894 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
895 | const elfcpp::Ehdr<size, big_endian>&); | |
896 | ||
0e70b911 CC |
897 | // Return the number of entries in the GOT. |
898 | unsigned int | |
899 | got_entry_count() const | |
900 | { | |
901 | if (this->got_ == NULL) | |
902 | return 0; | |
903 | return this->got_size() / (size / 8); | |
904 | } | |
905 | ||
906 | // Return the number of entries in the PLT. | |
907 | unsigned int | |
908 | plt_entry_count() const; | |
909 | ||
910 | // Return the offset of the first non-reserved PLT entry. | |
911 | unsigned int | |
b4f7960d AM |
912 | first_plt_entry_offset() const |
913 | { | |
914 | if (size == 32) | |
915 | return 0; | |
916 | if (this->abiversion() >= 2) | |
917 | return 16; | |
918 | return 24; | |
919 | } | |
0e70b911 CC |
920 | |
921 | // Return the size of each PLT entry. | |
922 | unsigned int | |
b4f7960d AM |
923 | plt_entry_size() const |
924 | { | |
925 | if (size == 32) | |
926 | return 4; | |
927 | if (this->abiversion() >= 2) | |
928 | return 8; | |
929 | return 24; | |
930 | } | |
0e70b911 | 931 | |
d49044c7 AM |
932 | Output_data_save_res<size, big_endian>* |
933 | savres_section() const | |
934 | { | |
935 | return this->savres_section_; | |
936 | } | |
937 | ||
e81fea4d AM |
938 | // Add any special sections for this symbol to the gc work list. |
939 | // For powerpc64, this adds the code section of a function | |
940 | // descriptor. | |
941 | void | |
942 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
943 | ||
944 | // Handle target specific gc actions when adding a gc reference from | |
945 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
946 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
947 | // section of a function descriptor. | |
948 | void | |
949 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 950 | Relobj* src_obj, |
e81fea4d | 951 | unsigned int src_shndx, |
efc6fa12 | 952 | Relobj* dst_obj, |
e81fea4d AM |
953 | unsigned int dst_shndx, |
954 | Address dst_off) const; | |
955 | ||
ec661b9d AM |
956 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
957 | const Stub_tables& | |
958 | stub_tables() const | |
959 | { return this->stub_tables_; } | |
960 | ||
961 | const Output_data_brlt_powerpc<size, big_endian>* | |
962 | brlt_section() const | |
963 | { return this->brlt_section_; } | |
964 | ||
965 | void | |
966 | add_branch_lookup_table(Address to) | |
967 | { | |
968 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
969 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
970 | } | |
971 | ||
972 | Address | |
973 | find_branch_lookup_table(Address to) | |
974 | { | |
975 | typename Branch_lookup_table::const_iterator p | |
976 | = this->branch_lookup_table_.find(to); | |
977 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
978 | } | |
979 | ||
980 | void | |
981 | write_branch_lookup_table(unsigned char *oview) | |
982 | { | |
983 | for (typename Branch_lookup_table::const_iterator p | |
984 | = this->branch_lookup_table_.begin(); | |
985 | p != this->branch_lookup_table_.end(); | |
986 | ++p) | |
987 | { | |
4d5effb9 | 988 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
989 | } |
990 | } | |
991 | ||
590b87ff AM |
992 | // Wrapper used after relax to define a local symbol in output data, |
993 | // from the end if value < 0. | |
994 | void | |
995 | define_local(Symbol_table* symtab, const char* name, | |
996 | Output_data* od, Address value, unsigned int symsize) | |
997 | { | |
998 | Symbol* sym | |
999 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
1000 | od, value, symsize, elfcpp::STT_NOTYPE, | |
1001 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1002 | static_cast<Signed_address>(value) < 0, | |
1003 | false); | |
1004 | // We are creating this symbol late, so need to fix up things | |
1005 | // done early in Layout::finalize. | |
1006 | sym->set_dynsym_index(-1U); | |
1007 | } | |
1008 | ||
9e69ed50 AM |
1009 | bool |
1010 | plt_thread_safe() const | |
1011 | { return this->plt_thread_safe_; } | |
1012 | ||
7ee7ff70 AM |
1013 | bool |
1014 | plt_localentry0() const | |
1015 | { return this->plt_localentry0_; } | |
1016 | ||
1017 | void | |
1018 | set_has_localentry0() | |
1019 | { | |
1020 | this->has_localentry0_ = true; | |
1021 | } | |
1022 | ||
1023 | bool | |
1024 | is_elfv2_localentry0(const Symbol* gsym) const | |
1025 | { | |
1026 | return (size == 64 | |
1027 | && this->abiversion() >= 2 | |
1028 | && this->plt_localentry0() | |
1029 | && gsym->type() == elfcpp::STT_FUNC | |
1030 | && gsym->is_defined() | |
565ed01a AM |
1031 | && gsym->nonvis() >> 3 == 0 |
1032 | && !gsym->non_zero_localentry()); | |
7ee7ff70 AM |
1033 | } |
1034 | ||
1035 | bool | |
1036 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1037 | unsigned int r_sym) const | |
1038 | { | |
1039 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1040 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1041 | ||
1042 | if (size == 64 | |
1043 | && this->abiversion() >= 2 | |
1044 | && this->plt_localentry0() | |
1045 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1046 | { | |
1047 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1048 | bool is_ordinary; | |
1049 | if (!psymval->is_ifunc_symbol() | |
1050 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1051 | && is_ordinary) | |
1052 | return true; | |
1053 | } | |
1054 | return false; | |
1055 | } | |
1056 | ||
565ed01a AM |
1057 | // Remember any symbols seen with non-zero localentry, even those |
1058 | // not providing a definition | |
1059 | bool | |
1060 | resolve(Symbol* to, const elfcpp::Sym<size, big_endian>& sym, Object*, | |
1061 | const char*) | |
1062 | { | |
1063 | if (size == 64) | |
1064 | { | |
1065 | unsigned char st_other = sym.get_st_other(); | |
1066 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1067 | to->set_non_zero_localentry(); | |
1068 | } | |
1069 | // We haven't resolved anything, continue normal processing. | |
1070 | return false; | |
1071 | } | |
1072 | ||
b4f7960d | 1073 | int |
aacb3b6d | 1074 | abiversion() const |
b4f7960d AM |
1075 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } |
1076 | ||
1077 | void | |
aacb3b6d | 1078 | set_abiversion(int ver) |
b4f7960d AM |
1079 | { |
1080 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1081 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1082 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1083 | this->set_processor_specific_flags(flags); | |
1084 | } | |
1085 | ||
34e0882b AM |
1086 | Symbol* |
1087 | tls_get_addr_opt() const | |
1088 | { return this->tls_get_addr_opt_; } | |
1089 | ||
1090 | Symbol* | |
1091 | tls_get_addr() const | |
1092 | { return this->tls_get_addr_; } | |
1093 | ||
1094 | // If optimizing __tls_get_addr calls, whether this is the | |
1095 | // "__tls_get_addr" symbol. | |
1096 | bool | |
1097 | is_tls_get_addr_opt(const Symbol* gsym) const | |
1098 | { | |
1099 | return this->tls_get_addr_opt_ && (gsym == this->tls_get_addr_ | |
1100 | || gsym == this->tls_get_addr_opt_); | |
1101 | } | |
1102 | ||
1103 | bool | |
1104 | replace_tls_get_addr(const Symbol* gsym) const | |
1105 | { return this->tls_get_addr_opt_ && gsym == this->tls_get_addr_; } | |
1106 | ||
1107 | void | |
1108 | set_has_tls_get_addr_opt() | |
1109 | { this->has_tls_get_addr_opt_ = true; } | |
1110 | ||
aacb3b6d | 1111 | // Offset to toc save stack slot |
b4f7960d | 1112 | int |
aacb3b6d | 1113 | stk_toc() const |
b4f7960d AM |
1114 | { return this->abiversion() < 2 ? 40 : 24; } |
1115 | ||
34e0882b AM |
1116 | // Offset to linker save stack slot. ELFv2 doesn't have a linker word, |
1117 | // so use the CR save slot. Used only by __tls_get_addr call stub, | |
1118 | // relying on __tls_get_addr not saving CR itself. | |
1119 | int | |
1120 | stk_linker() const | |
1121 | { return this->abiversion() < 2 ? 32 : 8; } | |
1122 | ||
42cacb20 DE |
1123 | private: |
1124 | ||
e3deeb9c AM |
1125 | class Track_tls |
1126 | { | |
1127 | public: | |
1128 | enum Tls_get_addr | |
1129 | { | |
1130 | NOT_EXPECTED = 0, | |
1131 | EXPECTED = 1, | |
1132 | SKIP = 2, | |
1133 | NORMAL = 3 | |
1134 | }; | |
1135 | ||
1136 | Track_tls() | |
aacb3b6d | 1137 | : tls_get_addr_state_(NOT_EXPECTED), |
e3deeb9c AM |
1138 | relinfo_(NULL), relnum_(0), r_offset_(0) |
1139 | { } | |
1140 | ||
1141 | ~Track_tls() | |
1142 | { | |
aacb3b6d | 1143 | if (this->tls_get_addr_state_ != NOT_EXPECTED) |
e3deeb9c AM |
1144 | this->missing(); |
1145 | } | |
1146 | ||
1147 | void | |
1148 | missing(void) | |
1149 | { | |
1150 | if (this->relinfo_ != NULL) | |
1151 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1152 | _("missing expected __tls_get_addr call")); | |
1153 | } | |
1154 | ||
1155 | void | |
1156 | expect_tls_get_addr_call( | |
1157 | const Relocate_info<size, big_endian>* relinfo, | |
1158 | size_t relnum, | |
1159 | Address r_offset) | |
1160 | { | |
aacb3b6d | 1161 | this->tls_get_addr_state_ = EXPECTED; |
e3deeb9c AM |
1162 | this->relinfo_ = relinfo; |
1163 | this->relnum_ = relnum; | |
1164 | this->r_offset_ = r_offset; | |
1165 | } | |
1166 | ||
1167 | void | |
1168 | expect_tls_get_addr_call() | |
aacb3b6d | 1169 | { this->tls_get_addr_state_ = EXPECTED; } |
e3deeb9c AM |
1170 | |
1171 | void | |
1172 | skip_next_tls_get_addr_call() | |
aacb3b6d | 1173 | {this->tls_get_addr_state_ = SKIP; } |
e3deeb9c AM |
1174 | |
1175 | Tls_get_addr | |
34e0882b AM |
1176 | maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, |
1177 | unsigned int r_type, const Symbol* gsym) | |
e3deeb9c AM |
1178 | { |
1179 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
1180 | || r_type == elfcpp::R_PPC_PLTREL24) | |
1181 | && gsym != NULL | |
34e0882b AM |
1182 | && (gsym == target->tls_get_addr() |
1183 | || gsym == target->tls_get_addr_opt())); | |
aacb3b6d AM |
1184 | Tls_get_addr last_tls = this->tls_get_addr_state_; |
1185 | this->tls_get_addr_state_ = NOT_EXPECTED; | |
e3deeb9c AM |
1186 | if (is_tls_call && last_tls != EXPECTED) |
1187 | return last_tls; | |
1188 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1189 | { | |
1190 | this->missing(); | |
1191 | return EXPECTED; | |
1192 | } | |
1193 | return NORMAL; | |
1194 | } | |
1195 | ||
1196 | private: | |
1197 | // What we're up to regarding calls to __tls_get_addr. | |
1198 | // On powerpc, the branch and link insn making a call to | |
1199 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1200 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
1201 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
1202 | // The marker relocation always comes first, and has the same | |
1203 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1204 | // argument. This ties the arg setup insn with the call insn, | |
1205 | // allowing ld to safely optimize away the call. We check that | |
1206 | // every call to __tls_get_addr has a marker relocation, and that | |
1207 | // every marker relocation is on a call to __tls_get_addr. | |
aacb3b6d | 1208 | Tls_get_addr tls_get_addr_state_; |
e3deeb9c AM |
1209 | // Info about the last reloc for error message. |
1210 | const Relocate_info<size, big_endian>* relinfo_; | |
1211 | size_t relnum_; | |
1212 | Address r_offset_; | |
1213 | }; | |
1214 | ||
42cacb20 | 1215 | // The class which scans relocations. |
e3deeb9c | 1216 | class Scan : protected Track_tls |
42cacb20 DE |
1217 | { |
1218 | public: | |
bfdfa4cd AM |
1219 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1220 | ||
42cacb20 | 1221 | Scan() |
e3deeb9c | 1222 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1223 | { } |
1224 | ||
95a2c8d6 | 1225 | static inline int |
88b8e639 | 1226 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1227 | |
42cacb20 | 1228 | inline void |
ad0f2072 | 1229 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1230 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1231 | unsigned int data_shndx, |
1232 | Output_section* output_section, | |
1233 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1234 | const elfcpp::Sym<size, big_endian>& lsym, |
1235 | bool is_discarded); | |
42cacb20 DE |
1236 | |
1237 | inline void | |
ad0f2072 | 1238 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1239 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1240 | unsigned int data_shndx, |
1241 | Output_section* output_section, | |
1242 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1243 | Symbol* gsym); | |
1244 | ||
21bb3914 ST |
1245 | inline bool |
1246 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1247 | Target_powerpc* , | |
f6971787 | 1248 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1249 | unsigned int , |
2e702c99 RM |
1250 | Output_section* , |
1251 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1252 | unsigned int r_type, |
2e702c99 | 1253 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1254 | { |
1255 | // PowerPC64 .opd is not folded, so any identical function text | |
1256 | // may be folded and we'll still keep function addresses distinct. | |
1257 | // That means no reloc is of concern here. | |
1258 | if (size == 64) | |
f6971787 AM |
1259 | { |
1260 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1261 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1262 | if (ppcobj->abiversion() == 1) | |
1263 | return false; | |
1264 | } | |
1265 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
1266 | // function code might be taking the address of the function. |
1267 | return !is_branch_reloc(r_type); | |
1268 | } | |
21bb3914 ST |
1269 | |
1270 | inline bool | |
1271 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1272 | Target_powerpc* , | |
f6971787 | 1273 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1274 | unsigned int , |
1275 | Output_section* , | |
4d9aa155 AM |
1276 | const elfcpp::Rela<size, big_endian>& , |
1277 | unsigned int r_type, | |
1278 | Symbol*) | |
1279 | { | |
1280 | // As above. | |
1281 | if (size == 64) | |
f6971787 AM |
1282 | { |
1283 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1284 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1285 | if (ppcobj->abiversion() == 1) | |
1286 | return false; | |
1287 | } | |
4d9aa155 AM |
1288 | return !is_branch_reloc(r_type); |
1289 | } | |
21bb3914 | 1290 | |
b3ccdeb5 | 1291 | static bool |
9055360d AM |
1292 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1293 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1294 | unsigned int r_type, bool report_err); |
1295 | ||
42cacb20 DE |
1296 | private: |
1297 | static void | |
6fa2a40b | 1298 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1299 | unsigned int r_type); |
1300 | ||
1301 | static void | |
6fa2a40b | 1302 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1303 | unsigned int r_type, Symbol*); |
1304 | ||
1305 | static void | |
1306 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1307 | Target_powerpc* target); | |
1308 | ||
1309 | void | |
1310 | check_non_pic(Relobj*, unsigned int r_type); | |
1311 | ||
1312 | // Whether we have issued an error about a non-PIC compilation. | |
1313 | bool issued_non_pic_error_; | |
1314 | }; | |
1315 | ||
1611bc4a AM |
1316 | bool |
1317 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1318 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1319 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1320 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1321 | |
42cacb20 | 1322 | // The class which implements relocation. |
e3deeb9c | 1323 | class Relocate : protected Track_tls |
42cacb20 DE |
1324 | { |
1325 | public: | |
dd93cd0a AM |
1326 | // Use 'at' branch hints when true, 'y' when false. |
1327 | // FIXME maybe: set this with an option. | |
1328 | static const bool is_isa_v2 = true; | |
1329 | ||
dd93cd0a | 1330 | Relocate() |
e3deeb9c | 1331 | : Track_tls() |
dd93cd0a AM |
1332 | { } |
1333 | ||
42cacb20 DE |
1334 | // Do a relocation. Return false if the caller should not issue |
1335 | // any warnings about this relocation. | |
1336 | inline bool | |
91a65d2f AM |
1337 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1338 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1339 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1340 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1341 | section_size_type); |
42cacb20 DE |
1342 | }; |
1343 | ||
168a4726 AM |
1344 | class Relocate_comdat_behavior |
1345 | { | |
1346 | public: | |
1347 | // Decide what the linker should do for relocations that refer to | |
1348 | // discarded comdat sections. | |
1349 | inline Comdat_behavior | |
1350 | get(const char* name) | |
1351 | { | |
1352 | gold::Default_comdat_behavior default_behavior; | |
1353 | Comdat_behavior ret = default_behavior.get(name); | |
1354 | if (ret == CB_WARNING) | |
1355 | { | |
1356 | if (size == 32 | |
1357 | && (strcmp(name, ".fixup") == 0 | |
1358 | || strcmp(name, ".got2") == 0)) | |
1359 | ret = CB_IGNORE; | |
1360 | if (size == 64 | |
1361 | && (strcmp(name, ".opd") == 0 | |
1362 | || strcmp(name, ".toc") == 0 | |
1363 | || strcmp(name, ".toc1") == 0)) | |
1364 | ret = CB_IGNORE; | |
1365 | } | |
1366 | return ret; | |
1367 | } | |
1368 | }; | |
1369 | ||
dd93cd0a AM |
1370 | // Optimize the TLS relocation type based on what we know about the |
1371 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1372 | // known at link time. | |
1373 | ||
1374 | tls::Tls_optimization | |
1375 | optimize_tls_gd(bool is_final) | |
1376 | { | |
1377 | // If we are generating a shared library, then we can't do anything | |
1378 | // in the linker. | |
aacb3b6d AM |
1379 | if (parameters->options().shared() |
1380 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1381 | return tls::TLSOPT_NONE; |
1382 | ||
1383 | if (!is_final) | |
1384 | return tls::TLSOPT_TO_IE; | |
1385 | return tls::TLSOPT_TO_LE; | |
1386 | } | |
1387 | ||
1388 | tls::Tls_optimization | |
1389 | optimize_tls_ld() | |
1390 | { | |
aacb3b6d AM |
1391 | if (parameters->options().shared() |
1392 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1393 | return tls::TLSOPT_NONE; |
1394 | ||
1395 | return tls::TLSOPT_TO_LE; | |
1396 | } | |
1397 | ||
1398 | tls::Tls_optimization | |
1399 | optimize_tls_ie(bool is_final) | |
1400 | { | |
aacb3b6d AM |
1401 | if (!is_final |
1402 | || parameters->options().shared() | |
1403 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1404 | return tls::TLSOPT_NONE; |
1405 | ||
1406 | return tls::TLSOPT_TO_LE; | |
1407 | } | |
cf43a2fe | 1408 | |
cf43a2fe AM |
1409 | // Create glink. |
1410 | void | |
1411 | make_glink_section(Layout*); | |
42cacb20 | 1412 | |
cf43a2fe AM |
1413 | // Create the PLT section. |
1414 | void | |
40b469d7 | 1415 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1416 | |
e5d5f5ed | 1417 | void |
40b469d7 | 1418 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1419 | |
ec661b9d AM |
1420 | void |
1421 | make_brlt_section(Layout*); | |
1422 | ||
42cacb20 DE |
1423 | // Create a PLT entry for a global symbol. |
1424 | void | |
ec661b9d | 1425 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1426 | |
1427 | // Create a PLT entry for a local IFUNC symbol. | |
1428 | void | |
40b469d7 | 1429 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1430 | Sized_relobj_file<size, big_endian>*, |
1431 | unsigned int); | |
1432 | ||
42cacb20 | 1433 | |
dd93cd0a AM |
1434 | // Create a GOT entry for local dynamic __tls_get_addr. |
1435 | unsigned int | |
1436 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1437 | Sized_relobj_file<size, big_endian>* object); | |
1438 | ||
42cacb20 | 1439 | unsigned int |
dd93cd0a AM |
1440 | tlsld_got_offset() const |
1441 | { | |
1442 | return this->tlsld_got_offset_; | |
1443 | } | |
42cacb20 | 1444 | |
42cacb20 DE |
1445 | // Get the dynamic reloc section, creating it if necessary. |
1446 | Reloc_section* | |
1447 | rela_dyn_section(Layout*); | |
1448 | ||
b3ccdeb5 AM |
1449 | // Similarly, but for ifunc symbols get the one for ifunc. |
1450 | Reloc_section* | |
1451 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1452 | ||
42cacb20 DE |
1453 | // Copy a relocation against a global symbol. |
1454 | void | |
ef9beddf | 1455 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1456 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1457 | unsigned int shndx, Output_section* output_section, |
1458 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1459 | { | |
859d7987 | 1460 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1461 | this->copy_relocs_.copy_reloc(symtab, layout, |
1462 | symtab->get_sized_symbol<size>(sym), | |
1463 | object, shndx, output_section, | |
859d7987 CC |
1464 | r_type, reloc.get_r_offset(), |
1465 | reloc.get_r_addend(), | |
1466 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1467 | } |
1468 | ||
0cfdc767 | 1469 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1470 | void |
a3e60ddb | 1471 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1472 | |
1473 | // Sort output sections by address. | |
1474 | struct Sort_sections | |
1475 | { | |
1476 | bool | |
1477 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1478 | { return sec1->address() < sec2->address(); } | |
1479 | }; | |
1480 | ||
1481 | class Branch_info | |
1482 | { | |
1483 | public: | |
1484 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1485 | unsigned int data_shndx, | |
1486 | Address r_offset, | |
1487 | unsigned int r_type, | |
1488 | unsigned int r_sym, | |
1489 | Address addend) | |
1490 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1491 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1492 | { } |
1493 | ||
1494 | ~Branch_info() | |
1495 | { } | |
1496 | ||
7e57d19e AM |
1497 | // Return whether this branch is going via a plt call stub, and if |
1498 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1499 | bool | |
1500 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1501 | unsigned int shndx, Address offset, | |
1502 | Target_powerpc* target, Symbol_table* symtab); | |
1503 | ||
ec661b9d | 1504 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1505 | bool |
ec661b9d AM |
1506 | make_stub(Stub_table<size, big_endian>*, |
1507 | Stub_table<size, big_endian>*, | |
1508 | Symbol_table*) const; | |
1509 | ||
1510 | private: | |
1511 | // The branch location.. | |
1512 | Powerpc_relobj<size, big_endian>* object_; | |
1513 | unsigned int shndx_; | |
1514 | Address offset_; | |
1515 | // ..and the branch type and destination. | |
7e57d19e AM |
1516 | unsigned int r_type_ : 31; |
1517 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1518 | unsigned int r_sym_; |
1519 | Address addend_; | |
1520 | }; | |
1521 | ||
42cacb20 DE |
1522 | // Information about this specific target which we pass to the |
1523 | // general Target structure. | |
1524 | static Target::Target_info powerpc_info; | |
1525 | ||
1526 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1527 | // These values are exposed to the ABI in an incremental link. |
1528 | // Do not renumber existing values without changing the version | |
1529 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1530 | enum Got_type |
1531 | { | |
dd93cd0a AM |
1532 | GOT_TYPE_STANDARD, |
1533 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1534 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1535 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1536 | }; |
1537 | ||
ec661b9d | 1538 | // The GOT section. |
cf43a2fe | 1539 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1540 | // The PLT section. This is a container for a table of addresses, |
1541 | // and their relocations. Each address in the PLT has a dynamic | |
1542 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1543 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1544 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1545 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1546 | // linker adds a stub that loads the PLT entry into ctr then | |
1547 | // branches to ctr. There may be more than one stub for each PLT | |
1548 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1549 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1550 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1551 | // The IPLT section. Like plt_, this is a container for a table of |
1552 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1553 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1554 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1555 | // entry in .glink for lazy resolution, and the relocation section | |
1556 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1557 | // the relocation section may contain relocations against | |
1558 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1559 | // relocation section will appear at the end of other dynamic | |
1560 | // relocations, so that ld.so applies these relocations after other | |
1561 | // dynamic relocations. In a static executable, the relocation | |
1562 | // section is emitted and marked with __rela_iplt_start and | |
1563 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1564 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
ec661b9d AM |
1565 | // Section holding long branch destinations. |
1566 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1567 | // The .glink section. | |
cf43a2fe | 1568 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1569 | // The dynamic reloc section. |
42cacb20 DE |
1570 | Reloc_section* rela_dyn_; |
1571 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1572 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1573 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1574 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1575 | |
1576 | Stub_tables stub_tables_; | |
1577 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1578 | Branch_lookup_table branch_lookup_table_; | |
1579 | ||
1580 | typedef std::vector<Branch_info> Branches; | |
1581 | Branches branch_info_; | |
7e57d19e | 1582 | Tocsave_loc tocsave_loc_; |
9e69ed50 AM |
1583 | |
1584 | bool plt_thread_safe_; | |
7ee7ff70 AM |
1585 | bool plt_localentry0_; |
1586 | bool plt_localentry0_init_; | |
1587 | bool has_localentry0_; | |
34e0882b | 1588 | bool has_tls_get_addr_opt_; |
a3e60ddb AM |
1589 | |
1590 | bool relax_failed_; | |
1591 | int relax_fail_count_; | |
1592 | int32_t stub_group_size_; | |
d49044c7 AM |
1593 | |
1594 | Output_data_save_res<size, big_endian> *savres_section_; | |
34e0882b AM |
1595 | |
1596 | // The "__tls_get_addr" symbol, if present | |
1597 | Symbol* tls_get_addr_; | |
1598 | // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. | |
1599 | Symbol* tls_get_addr_opt_; | |
42cacb20 DE |
1600 | }; |
1601 | ||
1602 | template<> | |
1603 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1604 | { | |
1605 | 32, // size | |
1606 | true, // is_big_endian | |
1607 | elfcpp::EM_PPC, // machine_code | |
1608 | false, // has_make_symbol | |
1609 | false, // has_resolve | |
1610 | false, // has_code_fill | |
1611 | true, // is_default_stack_executable | |
b3ce541e | 1612 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1613 | '\0', // wrap_char |
1614 | "/usr/lib/ld.so.1", // dynamic_linker | |
1615 | 0x10000000, // default_text_segment_address | |
1616 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1617 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1618 | false, // isolate_execinstr |
1619 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1620 | elfcpp::SHN_UNDEF, // small_common_shndx |
1621 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1622 | 0, // small_common_section_flags | |
05a352e6 DK |
1623 | 0, // large_common_section_flags |
1624 | NULL, // attributes_section | |
a67858e0 | 1625 | NULL, // attributes_vendor |
8d9743bd MK |
1626 | "_start", // entry_symbol_name |
1627 | 32, // hash_entry_size | |
42cacb20 DE |
1628 | }; |
1629 | ||
1630 | template<> | |
1631 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1632 | { | |
1633 | 32, // size | |
1634 | false, // is_big_endian | |
1635 | elfcpp::EM_PPC, // machine_code | |
1636 | false, // has_make_symbol | |
1637 | false, // has_resolve | |
1638 | false, // has_code_fill | |
1639 | true, // is_default_stack_executable | |
b3ce541e | 1640 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1641 | '\0', // wrap_char |
1642 | "/usr/lib/ld.so.1", // dynamic_linker | |
1643 | 0x10000000, // default_text_segment_address | |
1644 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1645 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1646 | false, // isolate_execinstr |
1647 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1648 | elfcpp::SHN_UNDEF, // small_common_shndx |
1649 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1650 | 0, // small_common_section_flags | |
05a352e6 DK |
1651 | 0, // large_common_section_flags |
1652 | NULL, // attributes_section | |
a67858e0 | 1653 | NULL, // attributes_vendor |
8d9743bd MK |
1654 | "_start", // entry_symbol_name |
1655 | 32, // hash_entry_size | |
42cacb20 DE |
1656 | }; |
1657 | ||
1658 | template<> | |
1659 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1660 | { | |
1661 | 64, // size | |
1662 | true, // is_big_endian | |
1663 | elfcpp::EM_PPC64, // machine_code | |
1664 | false, // has_make_symbol | |
565ed01a | 1665 | true, // has_resolve |
42cacb20 | 1666 | false, // has_code_fill |
ec769010 | 1667 | false, // is_default_stack_executable |
b3ce541e | 1668 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1669 | '\0', // wrap_char |
1670 | "/usr/lib/ld.so.1", // dynamic_linker | |
1671 | 0x10000000, // default_text_segment_address | |
1672 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1673 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1674 | false, // isolate_execinstr |
1675 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1676 | elfcpp::SHN_UNDEF, // small_common_shndx |
1677 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1678 | 0, // small_common_section_flags | |
05a352e6 DK |
1679 | 0, // large_common_section_flags |
1680 | NULL, // attributes_section | |
a67858e0 | 1681 | NULL, // attributes_vendor |
8d9743bd MK |
1682 | "_start", // entry_symbol_name |
1683 | 32, // hash_entry_size | |
42cacb20 DE |
1684 | }; |
1685 | ||
1686 | template<> | |
1687 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1688 | { | |
1689 | 64, // size | |
1690 | false, // is_big_endian | |
1691 | elfcpp::EM_PPC64, // machine_code | |
1692 | false, // has_make_symbol | |
565ed01a | 1693 | true, // has_resolve |
42cacb20 | 1694 | false, // has_code_fill |
ec769010 | 1695 | false, // is_default_stack_executable |
b3ce541e | 1696 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1697 | '\0', // wrap_char |
1698 | "/usr/lib/ld.so.1", // dynamic_linker | |
1699 | 0x10000000, // default_text_segment_address | |
1700 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1701 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1702 | false, // isolate_execinstr |
1703 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1704 | elfcpp::SHN_UNDEF, // small_common_shndx |
1705 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1706 | 0, // small_common_section_flags | |
05a352e6 DK |
1707 | 0, // large_common_section_flags |
1708 | NULL, // attributes_section | |
a67858e0 | 1709 | NULL, // attributes_vendor |
8d9743bd MK |
1710 | "_start", // entry_symbol_name |
1711 | 32, // hash_entry_size | |
42cacb20 DE |
1712 | }; |
1713 | ||
dd93cd0a AM |
1714 | inline bool |
1715 | is_branch_reloc(unsigned int r_type) | |
1716 | { | |
1717 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1718 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1719 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1720 | || r_type == elfcpp::R_POWERPC_REL14 | |
1721 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1722 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1723 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1724 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1725 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1726 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1727 | } | |
1728 | ||
1729 | // If INSN is an opcode that may be used with an @tls operand, return | |
1730 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1731 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1732 | uint32_t | |
1733 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1734 | { | |
1735 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1736 | return 0; | |
1737 | ||
1738 | unsigned int rtra; | |
1739 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1740 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1741 | else if (((insn >> 16) & 0x1f) == reg) | |
1742 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1743 | else | |
1744 | return 0; | |
1745 | ||
1746 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1747 | // add -> addi | |
1748 | insn = 14 << 26; | |
1749 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1750 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1751 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1752 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1753 | // load and store indexed -> dform | |
1754 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1755 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1756 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1757 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1758 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1759 | // lwax -> lwa | |
1760 | insn = (58 << 26) | 2; | |
1761 | else | |
1762 | return 0; | |
1763 | insn |= rtra; | |
1764 | return insn; | |
1765 | } | |
1766 | ||
dd93cd0a | 1767 | |
42cacb20 DE |
1768 | template<int size, bool big_endian> |
1769 | class Powerpc_relocate_functions | |
1770 | { | |
dd93cd0a | 1771 | public: |
f4baf0d4 | 1772 | enum Overflow_check |
dd93cd0a | 1773 | { |
f4baf0d4 AM |
1774 | CHECK_NONE, |
1775 | CHECK_SIGNED, | |
b80eed39 AM |
1776 | CHECK_UNSIGNED, |
1777 | CHECK_BITFIELD, | |
1778 | CHECK_LOW_INSN, | |
1779 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1780 | }; |
1781 | ||
f4baf0d4 | 1782 | enum Status |
dd93cd0a | 1783 | { |
f4baf0d4 AM |
1784 | STATUS_OK, |
1785 | STATUS_OVERFLOW | |
1786 | }; | |
dd93cd0a | 1787 | |
42cacb20 | 1788 | private: |
c9269dff | 1789 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1790 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1791 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1792 | |
dd93cd0a AM |
1793 | template<int valsize> |
1794 | static inline bool | |
1795 | has_overflow_signed(Address value) | |
1796 | { | |
1797 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1798 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1799 | limit <<= ((valsize - 1) >> 1); | |
1800 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1801 | return value + limit > (limit << 1) - 1; | |
1802 | } | |
1803 | ||
1804 | template<int valsize> | |
1805 | static inline bool | |
b80eed39 | 1806 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1807 | { |
1808 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1809 | limit <<= ((valsize - 1) >> 1); | |
1810 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1811 | return value > (limit << 1) - 1; |
1812 | } | |
1813 | ||
1814 | template<int valsize> | |
1815 | static inline bool | |
1816 | has_overflow_bitfield(Address value) | |
1817 | { | |
1818 | return (has_overflow_unsigned<valsize>(value) | |
1819 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1820 | } |
1821 | ||
1822 | template<int valsize> | |
f4baf0d4 AM |
1823 | static inline Status |
1824 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1825 | { |
f4baf0d4 | 1826 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1827 | { |
1828 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1829 | return STATUS_OVERFLOW; |
dd93cd0a | 1830 | } |
b80eed39 AM |
1831 | else if (overflow == CHECK_UNSIGNED) |
1832 | { | |
1833 | if (has_overflow_unsigned<valsize>(value)) | |
1834 | return STATUS_OVERFLOW; | |
1835 | } | |
f4baf0d4 | 1836 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1837 | { |
1838 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1839 | return STATUS_OVERFLOW; |
dd93cd0a | 1840 | } |
f4baf0d4 | 1841 | return STATUS_OK; |
dd93cd0a AM |
1842 | } |
1843 | ||
cf43a2fe | 1844 | // Do a simple RELA relocation |
0cfb0717 | 1845 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1846 | static inline Status |
1847 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1848 | { |
0cfb0717 | 1849 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1850 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1851 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1852 | return overflowed<valsize>(value, overflow); |
1853 | } | |
1854 | ||
0cfb0717 | 1855 | template<int fieldsize, int valsize> |
f4baf0d4 | 1856 | static inline Status |
42cacb20 DE |
1857 | rela(unsigned char* view, |
1858 | unsigned int right_shift, | |
0cfb0717 | 1859 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1860 | Address value, |
f4baf0d4 | 1861 | Overflow_check overflow) |
42cacb20 | 1862 | { |
0cfb0717 | 1863 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1864 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1865 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1866 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1867 | val &= ~dst_mask; |
1868 | reloc &= dst_mask; | |
0cfb0717 | 1869 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1870 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1871 | } |
1872 | ||
cf43a2fe | 1873 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1874 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1875 | static inline Status |
1876 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1877 | { |
0cfb0717 | 1878 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1879 | return overflowed<valsize>(value, overflow); |
1880 | } | |
1881 | ||
0cfb0717 | 1882 | template<int fieldsize, int valsize> |
f4baf0d4 | 1883 | static inline Status |
cf43a2fe AM |
1884 | rela_ua(unsigned char* view, |
1885 | unsigned int right_shift, | |
0cfb0717 | 1886 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1887 | Address value, |
f4baf0d4 | 1888 | Overflow_check overflow) |
42cacb20 | 1889 | { |
0cfb0717 | 1890 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1891 | Valtype; |
0cfb0717 | 1892 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1893 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1894 | val &= ~dst_mask; |
1895 | reloc &= dst_mask; | |
0cfb0717 | 1896 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1897 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1898 | } |
1899 | ||
42cacb20 | 1900 | public: |
dd93cd0a | 1901 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1902 | static inline void |
dd93cd0a | 1903 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1904 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1905 | |
dd93cd0a | 1906 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1907 | static inline void |
dd93cd0a | 1908 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1909 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1910 | |
1911 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1912 | static inline Status |
1913 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1914 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1915 | |
1916 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1917 | static inline Status |
1918 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1919 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1920 | |
1921 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1922 | static inline Status |
1923 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1924 | { |
0cfb0717 AM |
1925 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1926 | value, overflow); | |
f4baf0d4 AM |
1927 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1928 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1929 | return stat; |
1930 | } | |
42cacb20 DE |
1931 | |
1932 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1933 | static inline Status |
1934 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1935 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 1936 | |
dd93cd0a | 1937 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1938 | static inline Status |
1939 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1940 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 1941 | |
dd93cd0a | 1942 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1943 | static inline Status |
1944 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1945 | { |
0cfb0717 | 1946 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 1947 | if ((value & 3) != 0) |
f4baf0d4 | 1948 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
1949 | return stat; |
1950 | } | |
42cacb20 | 1951 | |
a680de9a PB |
1952 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
1953 | static inline Status | |
1954 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
1955 | { | |
1956 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
1957 | if ((value & 15) != 0) | |
1958 | stat = STATUS_OVERFLOW; | |
1959 | return stat; | |
1960 | } | |
1961 | ||
42cacb20 DE |
1962 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1963 | static inline void | |
dd93cd0a | 1964 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 1965 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1966 | |
c9269dff | 1967 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1968 | static inline void |
dd93cd0a AM |
1969 | addr16_ha(unsigned char* view, Address value) |
1970 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1971 | |
dd93cd0a | 1972 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1973 | static inline void |
dd93cd0a | 1974 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 1975 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1976 | |
dd93cd0a | 1977 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1978 | static inline void |
dd93cd0a AM |
1979 | addr16_ha2(unsigned char* view, Address value) |
1980 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1981 | |
dd93cd0a | 1982 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1983 | static inline void |
dd93cd0a | 1984 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 1985 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1986 | |
dd93cd0a | 1987 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1988 | static inline void |
dd93cd0a AM |
1989 | addr16_ha3(unsigned char* view, Address value) |
1990 | { This::addr16_hi3(view, value + 0x8000); } | |
1991 | ||
1992 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1993 | static inline Status |
1994 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1995 | { |
0cfb0717 | 1996 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
1997 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1998 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1999 | return stat; |
2000 | } | |
a680de9a PB |
2001 | |
2002 | // R_POWERPC_REL16DX_HA | |
2003 | static inline Status | |
2004 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
2005 | { | |
2006 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
2007 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
2008 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
2009 | value += 0x8000; | |
2010 | value = static_cast<SignedAddress>(value) >> 16; | |
2011 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2012 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
2013 | return overflowed<16>(value, overflow); | |
2014 | } | |
cf43a2fe AM |
2015 | }; |
2016 | ||
b4f7960d AM |
2017 | // Set ABI version for input and output. |
2018 | ||
2019 | template<int size, bool big_endian> | |
2020 | void | |
2021 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
2022 | { | |
2023 | this->e_flags_ |= ver; | |
2024 | if (this->abiversion() != 0) | |
2025 | { | |
2026 | Target_powerpc<size, big_endian>* target = | |
2027 | static_cast<Target_powerpc<size, big_endian>*>( | |
2028 | parameters->sized_target<size, big_endian>()); | |
2029 | if (target->abiversion() == 0) | |
2030 | target->set_abiversion(this->abiversion()); | |
2031 | else if (target->abiversion() != this->abiversion()) | |
2032 | gold_error(_("%s: ABI version %d is not compatible " | |
2033 | "with ABI version %d output"), | |
2034 | this->name().c_str(), | |
2035 | this->abiversion(), target->abiversion()); | |
2036 | ||
2037 | } | |
2038 | } | |
2039 | ||
5edad15d AM |
2040 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
2041 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
2042 | |
2043 | template<int size, bool big_endian> | |
2044 | bool | |
2045 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
2046 | Read_symbols_data* sd) | |
2047 | { | |
c9269dff AM |
2048 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2049 | const unsigned char* namesu = sd->section_names->data(); | |
2050 | const char* names = reinterpret_cast<const char*>(namesu); | |
2051 | section_size_type names_size = sd->section_names_size; | |
2052 | const unsigned char* s; | |
2053 | ||
dc3714f3 AM |
2054 | s = this->template find_shdr<size, big_endian>(pshdrs, |
2055 | size == 32 ? ".got2" : ".opd", | |
2056 | names, names_size, NULL); | |
c9269dff AM |
2057 | if (s != NULL) |
2058 | { | |
2059 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2060 | this->special_ = ndx; | |
b4f7960d AM |
2061 | if (size == 64) |
2062 | { | |
2063 | if (this->abiversion() == 0) | |
2064 | this->set_abiversion(1); | |
2065 | else if (this->abiversion() > 1) | |
2066 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2067 | this->name().c_str(), this->abiversion()); | |
2068 | } | |
c9269dff | 2069 | } |
5edad15d AM |
2070 | if (size == 64) |
2071 | { | |
2072 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2073 | names, names_size, NULL); | |
2074 | if (s != NULL) | |
2075 | { | |
2076 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2077 | this->relatoc_ = ndx; | |
2078 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2079 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2080 | } | |
2081 | } | |
c9269dff AM |
2082 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2083 | } | |
2084 | ||
2085 | // Examine .rela.opd to build info about function entry points. | |
2086 | ||
2087 | template<int size, bool big_endian> | |
2088 | void | |
2089 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2090 | size_t reloc_count, | |
2091 | const unsigned char* prelocs, | |
2092 | const unsigned char* plocal_syms) | |
2093 | { | |
2094 | if (size == 64) | |
cf43a2fe | 2095 | { |
0e123f69 AM |
2096 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2097 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2098 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2099 | Address expected_off = 0; |
2100 | bool regular = true; | |
2101 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2102 | |
2103 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2104 | { |
c9269dff AM |
2105 | Reltype reloc(prelocs); |
2106 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2107 | = reloc.get_r_info(); | |
2108 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2109 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2110 | { | |
2111 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2112 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2113 | bool is_ordinary; | |
2114 | unsigned int shndx; | |
2115 | if (r_sym < this->local_symbol_count()) | |
2116 | { | |
2117 | typename elfcpp::Sym<size, big_endian> | |
2118 | lsym(plocal_syms + r_sym * sym_size); | |
2119 | shndx = lsym.get_st_shndx(); | |
2120 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2121 | value = lsym.get_st_value(); | |
2122 | } | |
2123 | else | |
2124 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2125 | &is_ordinary); | |
2126 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2127 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2128 | if (i == 2) |
2129 | { | |
2130 | expected_off = reloc.get_r_offset(); | |
2131 | opd_ent_size = expected_off; | |
2132 | } | |
2133 | else if (expected_off != reloc.get_r_offset()) | |
2134 | regular = false; | |
2135 | expected_off += opd_ent_size; | |
2136 | } | |
2137 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2138 | { | |
2139 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2140 | regular = false; | |
2141 | } | |
2142 | else | |
2143 | { | |
2144 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2145 | this->name().c_str(), r_type); | |
2146 | regular = false; | |
c9269dff AM |
2147 | } |
2148 | } | |
ec4dbad3 AM |
2149 | if (reloc_count <= 2) |
2150 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2151 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2152 | regular = false; | |
2153 | if (!regular) | |
2154 | { | |
2155 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2156 | this->name().c_str()); | |
2157 | opd_ent_size = 0; | |
2158 | } | |
c9269dff AM |
2159 | } |
2160 | } | |
2161 | ||
5edad15d AM |
2162 | // Returns true if a code sequence loading the TOC entry at VALUE |
2163 | // relative to the TOC pointer can be converted into code calculating | |
2164 | // a TOC pointer relative offset. | |
2165 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2166 | ||
2167 | template<int size, bool big_endian> | |
2168 | bool | |
2169 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2170 | Target_powerpc<size, big_endian>* target, | |
2171 | Address* value) | |
2172 | { | |
2173 | if (size != 64) | |
2174 | return false; | |
2175 | ||
e666304e AM |
2176 | // With -mcmodel=medium code it is quite possible to have |
2177 | // toc-relative relocs referring to objects outside the TOC. | |
2178 | // Don't try to look at a non-existent TOC. | |
2179 | if (this->toc_shndx() == 0) | |
2180 | return false; | |
2181 | ||
5edad15d AM |
2182 | // Convert VALUE back to an address by adding got_base (see below), |
2183 | // then to an offset in the TOC by subtracting the TOC output | |
2184 | // section address and the TOC output offset. Since this TOC output | |
2185 | // section and the got output section are one and the same, we can | |
2186 | // omit adding and subtracting the output section address. | |
2187 | Address off = (*value + this->toc_base_offset() | |
2188 | - this->output_section_offset(this->toc_shndx())); | |
2189 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2190 | // TOC relative access to variables outside the TOC. Those of | |
2191 | // course can't be optimized. We also don't try to optimize code | |
2192 | // that is using a different object's TOC. | |
2193 | if (off >= this->section_size(this->toc_shndx())) | |
2194 | return false; | |
2195 | ||
2196 | if (this->no_toc_opt(off)) | |
2197 | return false; | |
2198 | ||
2199 | section_size_type vlen; | |
2200 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2201 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2202 | // The TOC pointer | |
2203 | Address got_base = (target->got_section()->output_section()->address() | |
2204 | + this->toc_base_offset()); | |
2205 | addr -= got_base; | |
857e829e | 2206 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2207 | return false; |
2208 | ||
2209 | *value = addr; | |
2210 | return true; | |
2211 | } | |
2212 | ||
2213 | // Perform the Sized_relobj_file method, then set up opd info from | |
2214 | // .opd relocs. | |
2215 | ||
c9269dff AM |
2216 | template<int size, bool big_endian> |
2217 | void | |
2218 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2219 | { | |
2220 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2221 | if (size == 64) | |
2222 | { | |
2223 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2224 | p != rd->relocs.end(); | |
2225 | ++p) | |
2226 | { | |
2227 | if (p->data_shndx == this->opd_shndx()) | |
2228 | { | |
ec4dbad3 AM |
2229 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2230 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2231 | if (opd_size != 0) | |
2232 | { | |
2233 | this->init_opd(opd_size); | |
2234 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2235 | rd->local_symbols->data()); | |
2236 | } | |
c9269dff AM |
2237 | break; |
2238 | } | |
cf43a2fe AM |
2239 | } |
2240 | } | |
cf43a2fe AM |
2241 | } |
2242 | ||
b4f7960d AM |
2243 | // Read the symbols then set up st_other vector. |
2244 | ||
2245 | template<int size, bool big_endian> | |
2246 | void | |
2247 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2248 | { | |
f35c4853 | 2249 | this->base_read_symbols(sd); |
b4f7960d AM |
2250 | if (size == 64) |
2251 | { | |
2252 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2253 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2254 | const unsigned int loccount = this->do_local_symbol_count(); | |
2255 | if (loccount != 0) | |
2256 | { | |
2257 | this->st_other_.resize(loccount); | |
2258 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2259 | off_t locsize = loccount * sym_size; | |
2260 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2261 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2262 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2263 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2264 | locsize, true, false); | |
2265 | psyms += sym_size; | |
2266 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2267 | { | |
2268 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2269 | unsigned char st_other = sym.get_st_other(); | |
2270 | this->st_other_[i] = st_other; | |
2271 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2272 | { | |
2273 | if (this->abiversion() == 0) | |
2274 | this->set_abiversion(2); | |
2275 | else if (this->abiversion() < 2) | |
2276 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2277 | " for ABI version 1"), | |
2278 | this->name().c_str(), i); | |
2279 | } | |
2280 | } | |
2281 | } | |
2282 | } | |
2283 | } | |
2284 | ||
2285 | template<int size, bool big_endian> | |
2286 | void | |
2287 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2288 | { | |
2289 | this->e_flags_ |= ver; | |
2290 | if (this->abiversion() != 0) | |
2291 | { | |
2292 | Target_powerpc<size, big_endian>* target = | |
2293 | static_cast<Target_powerpc<size, big_endian>*>( | |
2294 | parameters->sized_target<size, big_endian>()); | |
2295 | if (target->abiversion() == 0) | |
2296 | target->set_abiversion(this->abiversion()); | |
2297 | else if (target->abiversion() != this->abiversion()) | |
2298 | gold_error(_("%s: ABI version %d is not compatible " | |
2299 | "with ABI version %d output"), | |
2300 | this->name().c_str(), | |
2301 | this->abiversion(), target->abiversion()); | |
2302 | ||
2303 | } | |
2304 | } | |
2305 | ||
f35c4853 | 2306 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2307 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2308 | ||
2309 | template<int size, bool big_endian> | |
2310 | void | |
2311 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2312 | { | |
f35c4853 | 2313 | this->base_read_symbols(sd); |
dc3714f3 AM |
2314 | if (size == 64) |
2315 | { | |
2316 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2317 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2318 | const unsigned char* namesu = sd->section_names->data(); | |
2319 | const char* names = reinterpret_cast<const char*>(namesu); | |
2320 | const unsigned char* s = NULL; | |
2321 | const unsigned char* opd; | |
2322 | section_size_type opd_size; | |
2323 | ||
2324 | // Find and read .opd section. | |
2325 | while (1) | |
2326 | { | |
2327 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2328 | sd->section_names_size, | |
2329 | s); | |
2330 | if (s == NULL) | |
2331 | return; | |
2332 | ||
2333 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2334 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2335 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2336 | { | |
b4f7960d AM |
2337 | if (this->abiversion() == 0) |
2338 | this->set_abiversion(1); | |
2339 | else if (this->abiversion() > 1) | |
2340 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2341 | this->name().c_str(), this->abiversion()); | |
2342 | ||
dc3714f3 AM |
2343 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2344 | this->opd_address_ = shdr.get_sh_addr(); | |
2345 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2346 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2347 | true, false); | |
2348 | break; | |
2349 | } | |
2350 | } | |
2351 | ||
2352 | // Build set of executable sections. | |
2353 | // Using a set is probably overkill. There is likely to be only | |
2354 | // a few executable sections, typically .init, .text and .fini, | |
2355 | // and they are generally grouped together. | |
2356 | typedef std::set<Sec_info> Exec_sections; | |
2357 | Exec_sections exec_sections; | |
2358 | s = pshdrs; | |
2359 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2360 | { | |
2361 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2362 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2363 | && ((shdr.get_sh_flags() | |
2364 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2365 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2366 | && shdr.get_sh_size() != 0) | |
2367 | { | |
2368 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2369 | shdr.get_sh_size(), i)); | |
2370 | } | |
2371 | } | |
2372 | if (exec_sections.empty()) | |
2373 | return; | |
2374 | ||
2375 | // Look over the OPD entries. This is complicated by the fact | |
2376 | // that some binaries will use two-word entries while others | |
2377 | // will use the standard three-word entries. In most cases | |
2378 | // the third word (the environment pointer for languages like | |
2379 | // Pascal) is unused and will be zero. If the third word is | |
2380 | // used it should not be pointing into executable sections, | |
2381 | // I think. | |
2382 | this->init_opd(opd_size); | |
2383 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2384 | { | |
2385 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2386 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2387 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2388 | if (val == 0) | |
2389 | // Chances are that this is the third word of an OPD entry. | |
2390 | continue; | |
2391 | typename Exec_sections::const_iterator e | |
2392 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2393 | if (e != exec_sections.begin()) | |
2394 | { | |
2395 | --e; | |
2396 | if (e->start <= val && val < e->start + e->len) | |
2397 | { | |
2398 | // We have an address in an executable section. | |
2399 | // VAL ought to be the function entry, set it up. | |
2400 | this->set_opd_ent(p - opd, e->shndx, val); | |
2401 | // Skip second word of OPD entry, the TOC pointer. | |
2402 | p += 8; | |
2403 | } | |
2404 | } | |
2405 | // If we didn't match any executable sections, we likely | |
2406 | // have a non-zero third word in the OPD entry. | |
2407 | } | |
2408 | } | |
2409 | } | |
2410 | ||
5edad15d AM |
2411 | // Relocate sections. |
2412 | ||
2413 | template<int size, bool big_endian> | |
2414 | void | |
2415 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2416 | const Symbol_table* symtab, const Layout* layout, | |
2417 | const unsigned char* pshdrs, Output_file* of, | |
2418 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2419 | { | |
2420 | unsigned int start = 1; | |
2421 | if (size == 64 | |
2422 | && this->relatoc_ != 0 | |
2423 | && !parameters->options().relocatable()) | |
2424 | { | |
2425 | // Relocate .toc first. | |
2426 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2427 | this->relatoc_, this->relatoc_); | |
2428 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2429 | 1, this->relatoc_ - 1); | |
2430 | start = this->relatoc_ + 1; | |
2431 | } | |
2432 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2433 | start, this->shnum() - 1); | |
2434 | } | |
2435 | ||
f43ba157 | 2436 | // Set up some symbols. |
26a4e9cb AM |
2437 | |
2438 | template<int size, bool big_endian> | |
2439 | void | |
f43ba157 AM |
2440 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2441 | Symbol_table* symtab, | |
2442 | Layout* layout) | |
26a4e9cb AM |
2443 | { |
2444 | if (size == 32) | |
2445 | { | |
bb66a627 AM |
2446 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2447 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2448 | // non-relative dynamic relocs). The proper value will be |
2449 | // updated later. | |
2450 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2451 | if (gotsym != NULL && gotsym->is_undefined()) | |
2452 | { | |
2453 | Target_powerpc<size, big_endian>* target = | |
2454 | static_cast<Target_powerpc<size, big_endian>*>( | |
2455 | parameters->sized_target<size, big_endian>()); | |
2456 | Output_data_got_powerpc<size, big_endian>* got | |
2457 | = target->got_section(symtab, layout); | |
2458 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2459 | Symbol_table::PREDEFINED, | |
2460 | got, 0, 0, | |
2461 | elfcpp::STT_OBJECT, | |
bb66a627 | 2462 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2463 | elfcpp::STV_HIDDEN, 0, |
2464 | false, false); | |
2465 | } | |
2466 | ||
2467 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2468 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2469 | if (sdasym != NULL && sdasym->is_undefined()) | |
2470 | { | |
2471 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2472 | Output_section* os | |
2473 | = layout->add_output_section_data(".sdata", 0, | |
2474 | elfcpp::SHF_ALLOC | |
2475 | | elfcpp::SHF_WRITE, | |
2476 | sdata, ORDER_SMALL_DATA, false); | |
2477 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2478 | Symbol_table::PREDEFINED, | |
2479 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2480 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2481 | 0, false, false); | |
2482 | } | |
2483 | } | |
b4f7960d AM |
2484 | else |
2485 | { | |
2486 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2487 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2488 | if (gotsym != NULL && gotsym->is_undefined()) | |
2489 | { | |
2490 | Target_powerpc<size, big_endian>* target = | |
2491 | static_cast<Target_powerpc<size, big_endian>*>( | |
2492 | parameters->sized_target<size, big_endian>()); | |
2493 | Output_data_got_powerpc<size, big_endian>* got | |
2494 | = target->got_section(symtab, layout); | |
2495 | symtab->define_in_output_data(".TOC.", NULL, | |
2496 | Symbol_table::PREDEFINED, | |
2497 | got, 0x8000, 0, | |
2498 | elfcpp::STT_OBJECT, | |
2499 | elfcpp::STB_LOCAL, | |
2500 | elfcpp::STV_HIDDEN, 0, | |
2501 | false, false); | |
2502 | } | |
2503 | } | |
34e0882b AM |
2504 | |
2505 | this->tls_get_addr_ = symtab->lookup("__tls_get_addr"); | |
2506 | if (parameters->options().tls_get_addr_optimize() | |
2507 | && this->tls_get_addr_ != NULL | |
2508 | && this->tls_get_addr_->in_reg()) | |
2509 | this->tls_get_addr_opt_ = symtab->lookup("__tls_get_addr_opt"); | |
2510 | if (this->tls_get_addr_opt_ != NULL) | |
2511 | { | |
2512 | if (this->tls_get_addr_->is_undefined() | |
2513 | || this->tls_get_addr_->is_from_dynobj()) | |
2514 | { | |
2515 | // Make it seem as if references to __tls_get_addr are | |
2516 | // really to __tls_get_addr_opt, so the latter symbol is | |
2517 | // made dynamic, not the former. | |
2518 | this->tls_get_addr_->clear_in_reg(); | |
2519 | this->tls_get_addr_opt_->set_in_reg(); | |
2520 | } | |
2521 | // We have a non-dynamic definition for __tls_get_addr. | |
2522 | // Make __tls_get_addr_opt the same, if it does not already have | |
2523 | // a non-dynamic definition. | |
2524 | else if (this->tls_get_addr_opt_->is_undefined() | |
2525 | || this->tls_get_addr_opt_->is_from_dynobj()) | |
2526 | { | |
2527 | Sized_symbol<size>* from | |
2528 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_); | |
2529 | Sized_symbol<size>* to | |
2530 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_opt_); | |
2531 | symtab->clone<size>(to, from); | |
2532 | } | |
2533 | } | |
26a4e9cb AM |
2534 | } |
2535 | ||
cf43a2fe AM |
2536 | // Set up PowerPC target specific relobj. |
2537 | ||
2538 | template<int size, bool big_endian> | |
2539 | Object* | |
2540 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2541 | const std::string& name, | |
2542 | Input_file* input_file, | |
2543 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2544 | { | |
2545 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2546 | // ET_EXEC files are valid input for --just-symbols/-R, |
2547 | // and we treat them as relocatable objects. | |
2548 | if (et == elfcpp::ET_REL | |
2549 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2550 | { |
2551 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2552 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2553 | obj->setup(); |
2554 | return obj; | |
2555 | } | |
2556 | else if (et == elfcpp::ET_DYN) | |
2557 | { | |
dc3714f3 AM |
2558 | Powerpc_dynobj<size, big_endian>* obj = |
2559 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2560 | obj->setup(); |
2561 | return obj; | |
2562 | } | |
2563 | else | |
2564 | { | |
c9269dff | 2565 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2566 | return NULL; |
2567 | } | |
2568 | } | |
2569 | ||
2570 | template<int size, bool big_endian> | |
2571 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2572 | { | |
2573 | public: | |
2574 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2575 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2576 | ||
2577 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2578 | : Output_data_got<size, big_endian>(), | |
2579 | symtab_(symtab), layout_(layout), | |
2580 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2581 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2582 | { |
2583 | if (size == 64) | |
2584 | this->set_addralign(256); | |
2585 | } | |
cf43a2fe | 2586 | |
e84fe78f AM |
2587 | // Override all the Output_data_got methods we use so as to first call |
2588 | // reserve_ent(). | |
2589 | bool | |
2590 | add_global(Symbol* gsym, unsigned int got_type) | |
2591 | { | |
2592 | this->reserve_ent(); | |
2593 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2594 | } | |
2595 | ||
2596 | bool | |
2597 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2598 | { | |
2599 | this->reserve_ent(); | |
2600 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2601 | } | |
2602 | ||
2603 | bool | |
2604 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2605 | { return this->add_global_plt(gsym, got_type); } | |
2606 | ||
2607 | void | |
2608 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2609 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2610 | { | |
2611 | this->reserve_ent(); | |
2612 | Output_data_got<size, big_endian>:: | |
2613 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2614 | } | |
2615 | ||
2616 | void | |
2617 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2618 | Output_data_reloc_generic* rel_dyn, | |
2619 | unsigned int r_type_1, unsigned int r_type_2) | |
2620 | { | |
aacb3b6d AM |
2621 | if (gsym->has_got_offset(got_type)) |
2622 | return; | |
2623 | ||
e84fe78f AM |
2624 | this->reserve_ent(2); |
2625 | Output_data_got<size, big_endian>:: | |
2626 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2627 | } | |
2628 | ||
2629 | bool | |
2630 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2631 | { | |
2632 | this->reserve_ent(); | |
2633 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2634 | got_type); | |
2635 | } | |
2636 | ||
2637 | bool | |
2638 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2639 | { | |
2640 | this->reserve_ent(); | |
2641 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2642 | got_type); | |
2643 | } | |
2644 | ||
2645 | bool | |
2646 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2647 | { return this->add_local_plt(object, sym_index, got_type); } | |
2648 | ||
2649 | void | |
2650 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2651 | unsigned int got_type, | |
2652 | Output_data_reloc_generic* rel_dyn, | |
2653 | unsigned int r_type) | |
2654 | { | |
aacb3b6d AM |
2655 | if (object->local_has_got_offset(sym_index, got_type)) |
2656 | return; | |
2657 | ||
e84fe78f AM |
2658 | this->reserve_ent(2); |
2659 | Output_data_got<size, big_endian>:: | |
2660 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2661 | } | |
2662 | ||
2663 | unsigned int | |
2664 | add_constant(Valtype constant) | |
2665 | { | |
2666 | this->reserve_ent(); | |
2667 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2668 | } | |
2669 | ||
dd93cd0a AM |
2670 | unsigned int |
2671 | add_constant_pair(Valtype c1, Valtype c2) | |
2672 | { | |
2673 | this->reserve_ent(2); | |
e84fe78f | 2674 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2675 | } |
2676 | ||
2677 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2678 | unsigned int |
2679 | g_o_t() const | |
2680 | { | |
2681 | return this->got_offset(this->header_index_); | |
42cacb20 | 2682 | } |
cf43a2fe | 2683 | |
dd93cd0a AM |
2684 | // Offset of base used to access the GOT/TOC. |
2685 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2686 | Valtype |
dd93cd0a AM |
2687 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2688 | { | |
2689 | if (size == 32) | |
2690 | return this->g_o_t(); | |
2691 | else | |
2692 | return (this->output_section()->address() | |
2693 | + object->toc_base_offset() | |
2694 | - this->address()); | |
2695 | } | |
2696 | ||
cf43a2fe AM |
2697 | // Ensure our GOT has a header. |
2698 | void | |
2699 | set_final_data_size() | |
2700 | { | |
2701 | if (this->header_ent_cnt_ != 0) | |
2702 | this->make_header(); | |
2703 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2704 | } | |
2705 | ||
2706 | // First word of GOT header needs some values that are not | |
2707 | // handled by Output_data_got so poke them in here. | |
2708 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2709 | void | |
2710 | do_write(Output_file* of) | |
2711 | { | |
c9824451 AM |
2712 | Valtype val = 0; |
2713 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2714 | val = this->layout_->dynamic_section()->address(); | |
2715 | if (size == 64) | |
2716 | val = this->output_section()->address() + 0x8000; | |
2717 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2718 | Output_data_got<size, big_endian>::do_write(of); |
2719 | } | |
2720 | ||
2721 | private: | |
2722 | void | |
2723 | reserve_ent(unsigned int cnt = 1) | |
2724 | { | |
2725 | if (this->header_ent_cnt_ == 0) | |
2726 | return; | |
2727 | if (this->num_entries() + cnt > this->header_index_) | |
2728 | this->make_header(); | |
2729 | } | |
2730 | ||
2731 | void | |
2732 | make_header() | |
2733 | { | |
2734 | this->header_ent_cnt_ = 0; | |
2735 | this->header_index_ = this->num_entries(); | |
2736 | if (size == 32) | |
2737 | { | |
2738 | Output_data_got<size, big_endian>::add_constant(0); | |
2739 | Output_data_got<size, big_endian>::add_constant(0); | |
2740 | Output_data_got<size, big_endian>::add_constant(0); | |
2741 | ||
2742 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2743 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2744 | if (gotsym != NULL) | |
2745 | { | |
2746 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2747 | sym->set_value(this->g_o_t()); | |
2748 | } | |
2749 | else | |
2750 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2751 | Symbol_table::PREDEFINED, | |
2752 | this, this->g_o_t(), 0, | |
2753 | elfcpp::STT_OBJECT, | |
2754 | elfcpp::STB_LOCAL, | |
2755 | elfcpp::STV_HIDDEN, 0, | |
2756 | false, false); | |
cf43a2fe AM |
2757 | } |
2758 | else | |
2759 | Output_data_got<size, big_endian>::add_constant(0); | |
2760 | } | |
2761 | ||
2762 | // Stashed pointers. | |
2763 | Symbol_table* symtab_; | |
2764 | Layout* layout_; | |
2765 | ||
2766 | // GOT header size. | |
2767 | unsigned int header_ent_cnt_; | |
2768 | // GOT header index. | |
2769 | unsigned int header_index_; | |
42cacb20 DE |
2770 | }; |
2771 | ||
2772 | // Get the GOT section, creating it if necessary. | |
2773 | ||
2774 | template<int size, bool big_endian> | |
cf43a2fe | 2775 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2776 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2777 | Layout* layout) | |
2778 | { | |
2779 | if (this->got_ == NULL) | |
2780 | { | |
2781 | gold_assert(symtab != NULL && layout != NULL); | |
2782 | ||
cf43a2fe AM |
2783 | this->got_ |
2784 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2785 | |
2786 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2787 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2788 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2789 | } |
2790 | ||
2791 | return this->got_; | |
2792 | } | |
2793 | ||
2794 | // Get the dynamic reloc section, creating it if necessary. | |
2795 | ||
2796 | template<int size, bool big_endian> | |
2797 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2798 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2799 | { | |
2800 | if (this->rela_dyn_ == NULL) | |
2801 | { | |
2802 | gold_assert(layout != NULL); | |
2803 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2804 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2805 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2806 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2807 | } |
2808 | return this->rela_dyn_; | |
2809 | } | |
2810 | ||
b3ccdeb5 AM |
2811 | // Similarly, but for ifunc symbols get the one for ifunc. |
2812 | ||
2813 | template<int size, bool big_endian> | |
2814 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2815 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2816 | Layout* layout, | |
2817 | bool for_ifunc) | |
2818 | { | |
2819 | if (!for_ifunc) | |
2820 | return this->rela_dyn_section(layout); | |
2821 | ||
2822 | if (this->iplt_ == NULL) | |
2823 | this->make_iplt_section(symtab, layout); | |
2824 | return this->iplt_->rel_plt(); | |
2825 | } | |
2826 | ||
ec661b9d AM |
2827 | class Stub_control |
2828 | { | |
2829 | public: | |
2830 | // Determine the stub group size. The group size is the absolute | |
2831 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 2832 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 2833 | // the stubbed branches. |
1c3a5fbe AM |
2834 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
2835 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
2836 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
2837 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
2838 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 2839 | { |
ec661b9d AM |
2840 | } |
2841 | ||
2842 | // Return true iff input section can be handled by current stub | |
2843 | // group. | |
2844 | bool | |
2845 | can_add_to_stub_group(Output_section* o, | |
2846 | const Output_section::Input_section* i, | |
2847 | bool has14); | |
2848 | ||
2849 | const Output_section::Input_section* | |
2850 | owner() | |
2851 | { return owner_; } | |
2852 | ||
2853 | Output_section* | |
2854 | output_section() | |
2855 | { return output_section_; } | |
2856 | ||
a20605cf AM |
2857 | void |
2858 | set_output_and_owner(Output_section* o, | |
2859 | const Output_section::Input_section* i) | |
2860 | { | |
2861 | this->output_section_ = o; | |
2862 | this->owner_ = i; | |
2863 | } | |
2864 | ||
ec661b9d AM |
2865 | private: |
2866 | typedef enum | |
2867 | { | |
1c3a5fbe | 2868 | // Initial state. |
ec661b9d | 2869 | NO_GROUP, |
1c3a5fbe | 2870 | // Adding group sections before the stubs. |
ec661b9d | 2871 | FINDING_STUB_SECTION, |
1c3a5fbe | 2872 | // Adding group sections after the stubs. |
ec661b9d AM |
2873 | HAS_STUB_SECTION |
2874 | } State; | |
2875 | ||
ec661b9d | 2876 | uint32_t stub_group_size_; |
a5018ae5 | 2877 | bool stubs_always_after_branch_; |
ec661b9d | 2878 | bool suppress_size_errors_; |
1c3a5fbe AM |
2879 | // True if a stub group can serve multiple output sections. |
2880 | bool multi_os_; | |
2881 | State state_; | |
8a37735f AM |
2882 | // Current max size of group. Starts at stub_group_size_ but is |
2883 | // reduced to stub_group_size_/1024 on seeing a section with | |
2884 | // external conditional branches. | |
2885 | uint32_t group_size_; | |
a5018ae5 | 2886 | uint64_t group_start_addr_; |
57f6d32d AM |
2887 | // owner_ and output_section_ specify the section to which stubs are |
2888 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
2889 | const Output_section::Input_section* owner_; |
2890 | Output_section* output_section_; | |
2891 | }; | |
2892 | ||
0cfdc767 | 2893 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
2894 | // group. Sections are presented to this function in order, |
2895 | // so the first section is the head of the group. | |
ec661b9d AM |
2896 | |
2897 | bool | |
2898 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2899 | const Output_section::Input_section* i, | |
2900 | bool has14) | |
2901 | { | |
ec661b9d AM |
2902 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
2903 | uint64_t this_size; | |
2904 | uint64_t start_addr = o->address(); | |
2905 | ||
2906 | if (whole_sec) | |
2907 | // .init and .fini sections are pasted together to form a single | |
2908 | // function. We can't be adding stubs in the middle of the function. | |
2909 | this_size = o->data_size(); | |
2910 | else | |
2911 | { | |
2912 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
2913 | this_size = i->data_size(); | |
2914 | } | |
57f6d32d | 2915 | |
a5018ae5 | 2916 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
2917 | uint32_t group_size = this->stub_group_size_; |
2918 | if (has14) | |
2919 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 2920 | |
57f6d32d | 2921 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
2922 | gold_warning(_("%s:%s exceeds group size"), |
2923 | i->relobj()->name().c_str(), | |
2924 | i->relobj()->section_name(i->shndx()).c_str()); | |
2925 | ||
afe002dd AM |
2926 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
2927 | has14 ? " 14bit" : "", | |
2928 | i->relobj()->name().c_str(), | |
2929 | i->relobj()->section_name(i->shndx()).c_str(), | |
2930 | (long long) this_size, | |
a5018ae5 AM |
2931 | (this->state_ == NO_GROUP |
2932 | ? this_size | |
2933 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 2934 | |
1c3a5fbe AM |
2935 | if (this->state_ == NO_GROUP) |
2936 | { | |
2937 | // Only here on very first use of Stub_control | |
2938 | this->owner_ = i; | |
2939 | this->output_section_ = o; | |
2940 | this->state_ = FINDING_STUB_SECTION; | |
2941 | this->group_size_ = group_size; | |
2942 | this->group_start_addr_ = start_addr; | |
2943 | return true; | |
2944 | } | |
2945 | else if (!this->multi_os_ && this->output_section_ != o) | |
2946 | ; | |
2947 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 2948 | { |
a5018ae5 | 2949 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 2950 | // group? |
a5018ae5 | 2951 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 2952 | return true; |
ec661b9d | 2953 | } |
a5018ae5 | 2954 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 2955 | { |
a5018ae5 AM |
2956 | if ((whole_sec && this->output_section_ == o) |
2957 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2958 | { |
a5018ae5 | 2959 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
2960 | this->owner_ = i; |
2961 | this->output_section_ = o; | |
a5018ae5 | 2962 | return true; |
57f6d32d | 2963 | } |
a5018ae5 AM |
2964 | // The group before the stubs has reached maximum size. |
2965 | // Now see about adding sections after the stubs to the | |
2966 | // group. If the current section has a 14-bit branch and | |
2967 | // the group before the stubs exceeds group_size_ (because | |
2968 | // they didn't have 14-bit branches), don't add sections | |
2969 | // after the stubs: The size of stubs for such a large | |
2970 | // group may exceed the reach of a 14-bit branch. | |
2971 | if (!this->stubs_always_after_branch_ | |
2972 | && this_size <= this->group_size_ | |
2973 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2974 | { |
a5018ae5 AM |
2975 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
2976 | this->state_ = HAS_STUB_SECTION; | |
2977 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
2978 | return true; |
2979 | } | |
ec661b9d | 2980 | } |
a5018ae5 AM |
2981 | else |
2982 | gold_unreachable(); | |
57f6d32d | 2983 | |
1c3a5fbe AM |
2984 | gold_debug(DEBUG_TARGET, |
2985 | !this->multi_os_ && this->output_section_ != o | |
2986 | ? "nope, new output section\n" | |
2987 | : "nope, didn't fit\n"); | |
afe002dd | 2988 | |
57f6d32d AM |
2989 | // The section fails to fit in the current group. Set up a few |
2990 | // things for the next group. owner_ and output_section_ will be | |
2991 | // set later after we've retrieved those values for the current | |
2992 | // group. | |
2993 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 2994 | this->group_size_ = group_size; |
a5018ae5 | 2995 | this->group_start_addr_ = start_addr; |
57f6d32d | 2996 | return false; |
ec661b9d AM |
2997 | } |
2998 | ||
2999 | // Look over all the input sections, deciding where to place stubs. | |
3000 | ||
3001 | template<int size, bool big_endian> | |
3002 | void | |
3003 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
3004 | const Task*, |
3005 | bool no_size_errors) | |
ec661b9d | 3006 | { |
1c3a5fbe AM |
3007 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
3008 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
3009 | |
3010 | // Group input sections and insert stub table | |
a3e60ddb AM |
3011 | Stub_table_owner* table_owner = NULL; |
3012 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
3013 | Layout::Section_list section_list; |
3014 | layout->get_executable_sections(§ion_list); | |
3015 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
3016 | for (Layout::Section_list::iterator o = section_list.begin(); |
3017 | o != section_list.end(); | |
ec661b9d AM |
3018 | ++o) |
3019 | { | |
3020 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
3021 | for (Input_section_list::const_iterator i |
3022 | = (*o)->input_sections().begin(); | |
3023 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
3024 | ++i) |
3025 | { | |
a3e60ddb AM |
3026 | if (i->is_input_section() |
3027 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
3028 | { |
3029 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
3030 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
3031 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
3032 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
3033 | { | |
a3e60ddb AM |
3034 | table_owner->output_section = stub_control.output_section(); |
3035 | table_owner->owner = stub_control.owner(); | |
a20605cf | 3036 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 3037 | table_owner = NULL; |
ec661b9d | 3038 | } |
a3e60ddb AM |
3039 | if (table_owner == NULL) |
3040 | { | |
3041 | table_owner = new Stub_table_owner; | |
3042 | tables.push_back(table_owner); | |
3043 | } | |
3044 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
3045 | } |
3046 | } | |
3047 | } | |
a3e60ddb | 3048 | if (table_owner != NULL) |
0cfdc767 | 3049 | { |
a5018ae5 AM |
3050 | table_owner->output_section = stub_control.output_section(); |
3051 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
3052 | } |
3053 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
3054 | t != tables.end(); | |
3055 | ++t) | |
3056 | { | |
3057 | Stub_table<size, big_endian>* stub_table; | |
3058 | ||
3059 | if ((*t)->owner->is_input_section()) | |
3060 | stub_table = new Stub_table<size, big_endian>(this, | |
3061 | (*t)->output_section, | |
590b87ff AM |
3062 | (*t)->owner, |
3063 | this->stub_tables_.size()); | |
a3e60ddb AM |
3064 | else if ((*t)->owner->is_relaxed_input_section()) |
3065 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
3066 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 3067 | else |
a3e60ddb AM |
3068 | gold_unreachable(); |
3069 | this->stub_tables_.push_back(stub_table); | |
3070 | delete *t; | |
0cfdc767 | 3071 | } |
ec661b9d AM |
3072 | } |
3073 | ||
a3e60ddb AM |
3074 | static unsigned long |
3075 | max_branch_delta (unsigned int r_type) | |
3076 | { | |
3077 | if (r_type == elfcpp::R_POWERPC_REL14 | |
3078 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
3079 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
3080 | return 1L << 15; | |
3081 | if (r_type == elfcpp::R_POWERPC_REL24 | |
3082 | || r_type == elfcpp::R_PPC_PLTREL24 | |
3083 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
3084 | return 1L << 25; | |
3085 | return 0; | |
3086 | } | |
3087 | ||
7e57d19e AM |
3088 | // Return whether this branch is going via a plt call stub. |
3089 | ||
3090 | template<int size, bool big_endian> | |
3091 | bool | |
3092 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
3093 | Powerpc_relobj<size, big_endian>* ppc_object, | |
3094 | unsigned int shndx, | |
3095 | Address offset, | |
3096 | Target_powerpc* target, | |
3097 | Symbol_table* symtab) | |
3098 | { | |
3099 | if (this->object_ != ppc_object | |
3100 | || this->shndx_ != shndx | |
3101 | || this->offset_ != offset) | |
3102 | return false; | |
3103 | ||
3104 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3105 | if (sym != NULL && sym->is_forwarder()) | |
3106 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3107 | if (target->replace_tls_get_addr(sym)) |
3108 | sym = target->tls_get_addr_opt(); | |
7e57d19e AM |
3109 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
3110 | if (gsym != NULL | |
7ee7ff70 AM |
3111 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3112 | && !target->is_elfv2_localentry0(gsym)) | |
3113 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3114 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3115 | { |
3116 | this->tocsave_ = 1; | |
3117 | return true; | |
3118 | } | |
3119 | return false; | |
3120 | } | |
3121 | ||
ec661b9d AM |
3122 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3123 | ||
3124 | template<int size, bool big_endian> | |
a3e60ddb | 3125 | bool |
ec661b9d AM |
3126 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3127 | Stub_table<size, big_endian>* stub_table, | |
3128 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3129 | Symbol_table* symtab) const | |
3130 | { | |
3131 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
88b8e639 AM |
3132 | Target_powerpc<size, big_endian>* target = |
3133 | static_cast<Target_powerpc<size, big_endian>*>( | |
3134 | parameters->sized_target<size, big_endian>()); | |
34e0882b AM |
3135 | if (sym != NULL && sym->is_forwarder()) |
3136 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3137 | if (target->replace_tls_get_addr(sym)) |
3138 | sym = target->tls_get_addr_opt(); | |
34e0882b | 3139 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
dc60b26d AM |
3140 | bool ok = true; |
3141 | ||
ec661b9d | 3142 | if (gsym != NULL |
88b8e639 | 3143 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3144 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3145 | { | |
9055360d AM |
3146 | if (size == 64 |
3147 | && gsym != NULL | |
3148 | && target->abiversion() >= 2 | |
3149 | && !parameters->options().output_is_position_independent() | |
3150 | && !is_branch_reloc(this->r_type_)) | |
3151 | target->glink_section()->add_global_entry(gsym); | |
3152 | else | |
ec661b9d | 3153 | { |
64b5d6d7 AM |
3154 | if (stub_table == NULL |
3155 | && !(size == 32 | |
3156 | && gsym != NULL | |
3157 | && !parameters->options().output_is_position_independent() | |
3158 | && !is_branch_reloc(this->r_type_))) | |
9055360d AM |
3159 | stub_table = this->object_->stub_table(this->shndx_); |
3160 | if (stub_table == NULL) | |
3161 | { | |
64b5d6d7 AM |
3162 | // This is a ref from a data section to an ifunc symbol, |
3163 | // or a non-branch reloc for which we always want to use | |
3164 | // one set of stubs for resolving function addresses. | |
9055360d AM |
3165 | stub_table = ifunc_stub_table; |
3166 | } | |
3167 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3168 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3169 | if (from != invalid_address) | |
3170 | from += (this->object_->output_section(this->shndx_)->address() | |
3171 | + this->offset_); | |
9055360d | 3172 | if (gsym != NULL) |
dc60b26d AM |
3173 | ok = stub_table->add_plt_call_entry(from, |
3174 | this->object_, gsym, | |
7e57d19e AM |
3175 | this->r_type_, this->addend_, |
3176 | this->tocsave_); | |
9055360d | 3177 | else |
dc60b26d AM |
3178 | ok = stub_table->add_plt_call_entry(from, |
3179 | this->object_, this->r_sym_, | |
7e57d19e AM |
3180 | this->r_type_, this->addend_, |
3181 | this->tocsave_); | |
ec661b9d | 3182 | } |
ec661b9d AM |
3183 | } |
3184 | else | |
3185 | { | |
cbcb23fa | 3186 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
3187 | if (max_branch_offset == 0) |
3188 | return true; | |
ec661b9d AM |
3189 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3190 | gold_assert(from != invalid_address); | |
3191 | from += (this->object_->output_section(this->shndx_)->address() | |
3192 | + this->offset_); | |
3193 | Address to; | |
3194 | if (gsym != NULL) | |
3195 | { | |
3196 | switch (gsym->source()) | |
3197 | { | |
3198 | case Symbol::FROM_OBJECT: | |
3199 | { | |
3200 | Object* symobj = gsym->object(); | |
3201 | if (symobj->is_dynamic() | |
3202 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3203 | return true; |
ec661b9d AM |
3204 | bool is_ordinary; |
3205 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3206 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3207 | return true; |
ec661b9d AM |
3208 | } |
3209 | break; | |
3210 | ||
3211 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3212 | return true; |
ec661b9d AM |
3213 | |
3214 | default: | |
3215 | break; | |
3216 | } | |
3217 | Symbol_table::Compute_final_value_status status; | |
3218 | to = symtab->compute_final_value<size>(gsym, &status); | |
3219 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3220 | return true; |
9055360d AM |
3221 | if (size == 64) |
3222 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
3223 | } |
3224 | else | |
3225 | { | |
3226 | const Symbol_value<size>* psymval | |
3227 | = this->object_->local_symbol(this->r_sym_); | |
3228 | Symbol_value<size> symval; | |
0f125432 CC |
3229 | if (psymval->is_section_symbol()) |
3230 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3231 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3232 | typename ObjType::Compute_final_local_value_status status | |
3233 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3234 | &symval, symtab); | |
3235 | if (status != ObjType::CFLV_OK | |
3236 | || !symval.has_output_value()) | |
a3e60ddb | 3237 | return true; |
ec661b9d | 3238 | to = symval.value(this->object_, 0); |
9055360d AM |
3239 | if (size == 64) |
3240 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 3241 | } |
cbcb23fa AM |
3242 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3243 | to += this->addend_; | |
ec661b9d AM |
3244 | if (stub_table == NULL) |
3245 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3246 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3247 | { |
3248 | unsigned int dest_shndx; | |
1611bc4a AM |
3249 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3250 | &to, &dest_shndx)) | |
3251 | return true; | |
ec661b9d AM |
3252 | } |
3253 | Address delta = to - from; | |
3254 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
3255 | { | |
0cfdc767 AM |
3256 | if (stub_table == NULL) |
3257 | { | |
3258 | gold_warning(_("%s:%s: branch in non-executable section," | |
3259 | " no long branch stub for you"), | |
3260 | this->object_->name().c_str(), | |
3261 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3262 | return true; |
0cfdc767 | 3263 | } |
d49044c7 AM |
3264 | bool save_res = (size == 64 |
3265 | && gsym != NULL | |
3266 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3267 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3268 | ok = stub_table->add_long_branch_entry(this->object_, |
3269 | this->r_type_, | |
3270 | from, to, save_res); | |
ec661b9d AM |
3271 | } |
3272 | } | |
dc60b26d AM |
3273 | if (!ok) |
3274 | gold_debug(DEBUG_TARGET, | |
3275 | "branch at %s:%s+%#lx\n" | |
3276 | "can't reach stub attached to %s:%s", | |
3277 | this->object_->name().c_str(), | |
3278 | this->object_->section_name(this->shndx_).c_str(), | |
3279 | (unsigned long) this->offset_, | |
3280 | stub_table->relobj()->name().c_str(), | |
3281 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3282 | ||
3283 | return ok; | |
ec661b9d AM |
3284 | } |
3285 | ||
3286 | // Relaxation hook. This is where we do stub generation. | |
3287 | ||
3288 | template<int size, bool big_endian> | |
3289 | bool | |
3290 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3291 | const Input_objects*, | |
3292 | Symbol_table* symtab, | |
3293 | Layout* layout, | |
3294 | const Task* task) | |
3295 | { | |
3296 | unsigned int prev_brlt_size = 0; | |
3297 | if (pass == 1) | |
ec661b9d | 3298 | { |
b4f7960d AM |
3299 | bool thread_safe |
3300 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3301 | if (size == 64 | |
3302 | && this->abiversion() < 2 | |
3303 | && !thread_safe | |
3304 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3305 | { |
e2458743 | 3306 | static const char* const thread_starter[] = |
9e69ed50 AM |
3307 | { |
3308 | "pthread_create", | |
3309 | /* libstdc++ */ | |
3310 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3311 | /* librt */ | |
3312 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3313 | "mq_notify", "create_timer", | |
3314 | /* libanl */ | |
3315 | "getaddrinfo_a", | |
3316 | /* libgomp */ | |
80272b8c | 3317 | "GOMP_parallel", |
9e69ed50 | 3318 | "GOMP_parallel_start", |
80272b8c | 3319 | "GOMP_parallel_loop_static", |
9e69ed50 | 3320 | "GOMP_parallel_loop_static_start", |
80272b8c | 3321 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3322 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3323 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3324 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3325 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3326 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3327 | "GOMP_parallel_sections", |
43819297 | 3328 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3329 | /* libgo */ |
3330 | "__go_go", | |
9e69ed50 AM |
3331 | }; |
3332 | ||
e2458743 AM |
3333 | if (parameters->options().shared()) |
3334 | thread_safe = true; | |
3335 | else | |
9e69ed50 | 3336 | { |
e2458743 AM |
3337 | for (unsigned int i = 0; |
3338 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3339 | i++) | |
3340 | { | |
3341 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3342 | thread_safe = (sym != NULL | |
3343 | && sym->in_reg() | |
3344 | && sym->in_real_elf()); | |
3345 | if (thread_safe) | |
3346 | break; | |
3347 | } | |
9e69ed50 | 3348 | } |
ec661b9d | 3349 | } |
9e69ed50 | 3350 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3351 | } |
3352 | ||
3353 | if (pass == 1) | |
3354 | { | |
3355 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3356 | bool no_size_errors = true; | |
3357 | if (this->stub_group_size_ == 1) | |
3358 | this->stub_group_size_ = 0x1c00000; | |
3359 | else if (this->stub_group_size_ == -1) | |
3360 | this->stub_group_size_ = -0x1e00000; | |
3361 | else | |
3362 | no_size_errors = false; | |
3363 | this->group_sections(layout, task, no_size_errors); | |
3364 | } | |
3365 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3366 | { | |
3367 | this->branch_lookup_table_.clear(); | |
3368 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3369 | p != this->stub_tables_.end(); | |
3370 | ++p) | |
3371 | { | |
3372 | (*p)->clear_stubs(true); | |
3373 | } | |
3374 | this->stub_tables_.clear(); | |
3375 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3376 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3377 | program_name, this->stub_group_size_); |
3378 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3379 | } |
3380 | ||
3381 | // We need address of stub tables valid for make_stub. | |
3382 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3383 | p != this->stub_tables_.end(); | |
3384 | ++p) | |
3385 | { | |
3386 | const Powerpc_relobj<size, big_endian>* object | |
3387 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3388 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3389 | gold_assert(off != invalid_address); | |
3390 | Output_section* os = (*p)->output_section(); | |
3391 | (*p)->set_address_and_size(os, off); | |
3392 | } | |
3393 | ||
9e69ed50 AM |
3394 | if (pass != 1) |
3395 | { | |
3396 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3397 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3398 | this->branch_lookup_table_.clear(); | |
3399 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3400 | p != this->stub_tables_.end(); | |
3401 | ++p) | |
3402 | { | |
a3e60ddb | 3403 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3404 | } |
3405 | } | |
3406 | ||
3407 | // Build all the stubs. | |
a3e60ddb | 3408 | this->relax_failed_ = false; |
ec661b9d AM |
3409 | Stub_table<size, big_endian>* ifunc_stub_table |
3410 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3411 | Stub_table<size, big_endian>* one_stub_table | |
3412 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3413 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3414 | b != this->branch_info_.end(); | |
3415 | b++) | |
3416 | { | |
a3e60ddb AM |
3417 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3418 | && !this->relax_failed_) | |
3419 | { | |
3420 | this->relax_failed_ = true; | |
3421 | this->relax_fail_count_++; | |
3422 | if (this->relax_fail_count_ < 3) | |
3423 | return true; | |
3424 | } | |
ec661b9d AM |
3425 | } |
3426 | ||
9e69ed50 | 3427 | // Did anything change size? |
ec661b9d AM |
3428 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3429 | bool again = num_huge_branches != prev_brlt_size; | |
3430 | if (size == 64 && num_huge_branches != 0) | |
3431 | this->make_brlt_section(layout); | |
3432 | if (size == 64 && again) | |
3433 | this->brlt_section_->set_current_size(num_huge_branches); | |
3434 | ||
be897fb7 AM |
3435 | for (typename Stub_tables::reverse_iterator p = this->stub_tables_.rbegin(); |
3436 | p != this->stub_tables_.rend(); | |
3437 | ++p) | |
3438 | (*p)->remove_eh_frame(layout); | |
3439 | ||
3440 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3441 | p != this->stub_tables_.end(); | |
3442 | ++p) | |
3443 | (*p)->add_eh_frame(layout); | |
3444 | ||
ec661b9d AM |
3445 | typedef Unordered_set<Output_section*> Output_sections; |
3446 | Output_sections os_need_update; | |
3447 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3448 | p != this->stub_tables_.end(); | |
3449 | ++p) | |
3450 | { | |
3451 | if ((*p)->size_update()) | |
3452 | { | |
3453 | again = true; | |
3454 | os_need_update.insert((*p)->output_section()); | |
3455 | } | |
3456 | } | |
3457 | ||
9e69ed50 AM |
3458 | // Set output section offsets for all input sections in an output |
3459 | // section that just changed size. Anything past the stubs will | |
3460 | // need updating. | |
ec661b9d AM |
3461 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3462 | p != os_need_update.end(); | |
3463 | p++) | |
3464 | { | |
3465 | Output_section* os = *p; | |
3466 | Address off = 0; | |
3467 | typedef Output_section::Input_section_list Input_section_list; | |
3468 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3469 | i != os->input_sections().end(); | |
3470 | ++i) | |
3471 | { | |
3472 | off = align_address(off, i->addralign()); | |
3473 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3474 | i->relobj()->set_section_offset(i->shndx(), off); | |
3475 | if (i->is_relaxed_input_section()) | |
3476 | { | |
3477 | Stub_table<size, big_endian>* stub_table | |
3478 | = static_cast<Stub_table<size, big_endian>*>( | |
3479 | i->relaxed_input_section()); | |
6395d38b HS |
3480 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3481 | off += stub_table_size; | |
3482 | // After a few iterations, set current stub table size | |
3483 | // as min size threshold, so later stub tables can only | |
3484 | // grow in size. | |
3485 | if (pass >= 4) | |
3486 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3487 | } |
3488 | else | |
3489 | off += i->data_size(); | |
3490 | } | |
6830ee24 AM |
3491 | // If .branch_lt is part of this output section, then we have |
3492 | // just done the offset adjustment. | |
ec661b9d AM |
3493 | os->clear_section_offsets_need_adjustment(); |
3494 | } | |
3495 | ||
3496 | if (size == 64 | |
3497 | && !again | |
3498 | && num_huge_branches != 0 | |
3499 | && parameters->options().output_is_position_independent()) | |
3500 | { | |
3501 | // Fill in the BRLT relocs. | |
06f30c9d | 3502 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3503 | for (typename Branch_lookup_table::const_iterator p |
3504 | = this->branch_lookup_table_.begin(); | |
3505 | p != this->branch_lookup_table_.end(); | |
3506 | ++p) | |
3507 | { | |
3508 | this->brlt_section_->add_reloc(p->first, p->second); | |
3509 | } | |
06f30c9d | 3510 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3511 | } |
590b87ff AM |
3512 | |
3513 | if (!again | |
3514 | && (parameters->options().user_set_emit_stub_syms() | |
3515 | ? parameters->options().emit_stub_syms() | |
3516 | : (size == 64 | |
3517 | || parameters->options().output_is_position_independent() | |
3518 | || parameters->options().emit_relocs()))) | |
3519 | { | |
3520 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3521 | p != this->stub_tables_.end(); | |
3522 | ++p) | |
3523 | (*p)->define_stub_syms(symtab); | |
3524 | ||
3525 | if (this->glink_ != NULL) | |
3526 | { | |
9e390558 | 3527 | int stub_size = this->glink_->pltresolve_size(); |
590b87ff AM |
3528 | Address value = -stub_size; |
3529 | if (size == 64) | |
3530 | { | |
3531 | value = 8; | |
3532 | stub_size -= 8; | |
3533 | } | |
3534 | this->define_local(symtab, "__glink_PLTresolve", | |
3535 | this->glink_, value, stub_size); | |
3536 | ||
3537 | if (size != 64) | |
3538 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3539 | } | |
3540 | } | |
3541 | ||
ec661b9d AM |
3542 | return again; |
3543 | } | |
3544 | ||
9d5781f8 AM |
3545 | template<int size, bool big_endian> |
3546 | void | |
3547 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3548 | unsigned char* oview, | |
3549 | uint64_t* paddress, | |
3550 | off_t* plen) const | |
3551 | { | |
3552 | uint64_t address = plt->address(); | |
3553 | off_t len = plt->data_size(); | |
3554 | ||
3555 | if (plt == this->glink_) | |
3556 | { | |
3557 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3558 | if (len == 0) |
3559 | { | |
3560 | gold_assert(parameters->doing_static_link()); | |
3561 | // Static linking may need stubs, to support ifunc and long | |
3562 | // branches. We need to create an output section for | |
3563 | // .eh_frame early in the link process, to have a place to | |
3564 | // attach stub .eh_frame info. We also need to have | |
3565 | // registered a CIE that matches the stub CIE. Both of | |
3566 | // these requirements are satisfied by creating an FDE and | |
3567 | // CIE for .glink, even though static linking will leave | |
3568 | // .glink zero length. | |
3569 | // ??? Hopefully generating an FDE with a zero address range | |
3570 | // won't confuse anything that consumes .eh_frame info. | |
3571 | } | |
3572 | else if (size == 64) | |
9d5781f8 AM |
3573 | { |
3574 | // There is one word before __glink_PLTresolve | |
3575 | address += 8; | |
3576 | len -= 8; | |
3577 | } | |
3578 | else if (parameters->options().output_is_position_independent()) | |
3579 | { | |
3580 | // There are two FDEs for a position independent glink. | |
3581 | // The first covers the branch table, the second | |
3582 | // __glink_PLTresolve at the end of glink. | |
9e390558 | 3583 | off_t resolve_size = this->glink_->pltresolve_size(); |
5fe7ffdc | 3584 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3585 | len -= resolve_size; |
3586 | else | |
3587 | { | |
3588 | address += len - resolve_size; | |
3589 | len = resolve_size; | |
3590 | } | |
3591 | } | |
3592 | } | |
3593 | else | |
3594 | { | |
3595 | // Must be a stub table. | |
3596 | const Stub_table<size, big_endian>* stub_table | |
3597 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3598 | uint64_t stub_address = stub_table->stub_address(); | |
3599 | len -= stub_address - address; | |
3600 | address = stub_address; | |
3601 | } | |
3602 | ||
3603 | *paddress = address; | |
3604 | *plen = len; | |
3605 | } | |
3606 | ||
42cacb20 DE |
3607 | // A class to handle the PLT data. |
3608 | ||
3609 | template<int size, bool big_endian> | |
cf43a2fe | 3610 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3611 | { |
3612 | public: | |
3613 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3614 | size, big_endian> Reloc_section; | |
3615 | ||
e5d5f5ed AM |
3616 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3617 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3618 | const char* name) |
3619 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3620 | rel_(plt_rel), | |
3621 | targ_(targ), | |
e5d5f5ed AM |
3622 | name_(name) |
3623 | { } | |
42cacb20 DE |
3624 | |
3625 | // Add an entry to the PLT. | |
03e25981 | 3626 | void |
cf43a2fe | 3627 | add_entry(Symbol*); |
42cacb20 | 3628 | |
03e25981 | 3629 | void |
e5d5f5ed AM |
3630 | add_ifunc_entry(Symbol*); |
3631 | ||
03e25981 | 3632 | void |
e5d5f5ed AM |
3633 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3634 | ||
42cacb20 | 3635 | // Return the .rela.plt section data. |
e5d5f5ed | 3636 | Reloc_section* |
cf43a2fe AM |
3637 | rel_plt() const |
3638 | { | |
42cacb20 DE |
3639 | return this->rel_; |
3640 | } | |
3641 | ||
0e70b911 CC |
3642 | // Return the number of PLT entries. |
3643 | unsigned int | |
3644 | entry_count() const | |
d83ce4e3 | 3645 | { |
b3ccdeb5 AM |
3646 | if (this->current_data_size() == 0) |
3647 | return 0; | |
b4f7960d AM |
3648 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3649 | / this->plt_entry_size()); | |
d83ce4e3 | 3650 | } |
0e70b911 | 3651 | |
42cacb20 | 3652 | protected: |
42cacb20 | 3653 | void |
cf43a2fe | 3654 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3655 | { |
cf43a2fe | 3656 | os->set_entsize(0); |
42cacb20 DE |
3657 | } |
3658 | ||
6ce78956 AM |
3659 | // Write to a map file. |
3660 | void | |
3661 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3662 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3663 | |
cf43a2fe | 3664 | private: |
b4f7960d AM |
3665 | // Return the offset of the first non-reserved PLT entry. |
3666 | unsigned int | |
3667 | first_plt_entry_offset() const | |
3668 | { | |
3669 | // IPLT has no reserved entry. | |
3670 | if (this->name_[3] == 'I') | |
3671 | return 0; | |
3672 | return this->targ_->first_plt_entry_offset(); | |
3673 | } | |
3674 | ||
3675 | // Return the size of each PLT entry. | |
3676 | unsigned int | |
3677 | plt_entry_size() const | |
3678 | { | |
3679 | return this->targ_->plt_entry_size(); | |
3680 | } | |
cf43a2fe | 3681 | |
42cacb20 DE |
3682 | // Write out the PLT data. |
3683 | void | |
3684 | do_write(Output_file*); | |
3685 | ||
3686 | // The reloc section. | |
3687 | Reloc_section* rel_; | |
cf43a2fe AM |
3688 | // Allows access to .glink for do_write. |
3689 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3690 | // What to report in map file. |
3691 | const char *name_; | |
42cacb20 DE |
3692 | }; |
3693 | ||
e5d5f5ed | 3694 | // Add an entry to the PLT. |
42cacb20 DE |
3695 | |
3696 | template<int size, bool big_endian> | |
03e25981 | 3697 | void |
e5d5f5ed | 3698 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3699 | { |
e5d5f5ed AM |
3700 | if (!gsym->has_plt_offset()) |
3701 | { | |
ec661b9d | 3702 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3703 | if (off == 0) |
3704 | off += this->first_plt_entry_offset(); | |
3705 | gsym->set_plt_offset(off); | |
3706 | gsym->set_needs_dynsym_entry(); | |
3707 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3708 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3709 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3710 | this->set_current_data_size(off); |
3711 | } | |
42cacb20 DE |
3712 | } |
3713 | ||
e5d5f5ed | 3714 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3715 | |
3716 | template<int size, bool big_endian> | |
03e25981 | 3717 | void |
e5d5f5ed | 3718 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3719 | { |
cf43a2fe AM |
3720 | if (!gsym->has_plt_offset()) |
3721 | { | |
ec661b9d | 3722 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3723 | gsym->set_plt_offset(off); |
e5d5f5ed | 3724 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3725 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3726 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3727 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3728 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3729 | this->set_current_data_size(off); |
3730 | } | |
3731 | } | |
3732 | ||
3733 | // Add an entry for a local ifunc symbol to the IPLT. | |
3734 | ||
3735 | template<int size, bool big_endian> | |
03e25981 | 3736 | void |
e5d5f5ed AM |
3737 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3738 | Sized_relobj_file<size, big_endian>* relobj, | |
3739 | unsigned int local_sym_index) | |
3740 | { | |
3741 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3742 | { | |
ec661b9d | 3743 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3744 | relobj->set_local_plt_offset(local_sym_index, off); |
3745 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3746 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3747 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3748 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3749 | this, off, 0); | |
b4f7960d | 3750 | off += this->plt_entry_size(); |
cf43a2fe AM |
3751 | this->set_current_data_size(off); |
3752 | } | |
42cacb20 DE |
3753 | } |
3754 | ||
dd93cd0a | 3755 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3756 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 3757 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
3758 | static const uint32_t add_3_3_2 = 0x7c631214; |
3759 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
34e0882b AM |
3760 | static const uint32_t add_3_12_2 = 0x7c6c1214; |
3761 | static const uint32_t add_3_12_13 = 0x7c6c6a14; | |
dd93cd0a | 3762 | static const uint32_t add_11_0_11 = 0x7d605a14; |
b4f7960d AM |
3763 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3764 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3765 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3766 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3767 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3768 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3769 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3770 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3771 | static const uint32_t addis_0_2 = 0x3c020000; |
3772 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3773 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3774 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3775 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3776 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3777 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3778 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3779 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3780 | static const uint32_t b = 0x48000000; |
3781 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3782 | static const uint32_t bctr = 0x4e800420; | |
34e0882b | 3783 | static const uint32_t bctrl = 0x4e800421; |
1be5d8d3 AM |
3784 | static const uint32_t beqctrm = 0x4dc20420; |
3785 | static const uint32_t beqctrlm = 0x4dc20421; | |
34e0882b | 3786 | static const uint32_t beqlr = 0x4d820020; |
f3a0ed29 | 3787 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3788 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3789 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3790 | static const uint32_t cmpldi_2_0 = 0x28220000; |
34e0882b AM |
3791 | static const uint32_t cmpdi_11_0 = 0x2c2b0000; |
3792 | static const uint32_t cmpwi_11_0 = 0x2c0b0000; | |
dd93cd0a AM |
3793 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3794 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
1be5d8d3 | 3795 | static const uint32_t crseteq = 0x4c421242; |
f3a0ed29 AM |
3796 | static const uint32_t ld_0_1 = 0xe8010000; |
3797 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3798 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3799 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 3800 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 3801 | static const uint32_t ld_2_12 = 0xe84c0000; |
34e0882b | 3802 | static const uint32_t ld_11_1 = 0xe9610000; |
b4f7960d | 3803 | static const uint32_t ld_11_2 = 0xe9620000; |
34e0882b | 3804 | static const uint32_t ld_11_3 = 0xe9630000; |
b4f7960d AM |
3805 | static const uint32_t ld_11_11 = 0xe96b0000; |
3806 | static const uint32_t ld_12_2 = 0xe9820000; | |
34e0882b | 3807 | static const uint32_t ld_12_3 = 0xe9830000; |
b4f7960d | 3808 | static const uint32_t ld_12_11 = 0xe98b0000; |
9055360d | 3809 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3810 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3811 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3812 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3813 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 3814 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
3815 | static const uint32_t lis_11 = 0x3d600000; |
3816 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3817 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 3818 | static const uint32_t lwz_0_12 = 0x800c0000; |
34e0882b | 3819 | static const uint32_t lwz_11_3 = 0x81630000; |
c9269dff AM |
3820 | static const uint32_t lwz_11_11 = 0x816b0000; |
3821 | static const uint32_t lwz_11_30 = 0x817e0000; | |
34e0882b | 3822 | static const uint32_t lwz_12_3 = 0x81830000; |
c9269dff | 3823 | static const uint32_t lwz_12_12 = 0x818c0000; |
dd93cd0a | 3824 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3825 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3826 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff | 3827 | static const uint32_t mflr_12 = 0x7d8802a6; |
34e0882b AM |
3828 | static const uint32_t mr_0_3 = 0x7c601b78; |
3829 | static const uint32_t mr_3_0 = 0x7c030378; | |
c9269dff AM |
3830 | static const uint32_t mtctr_0 = 0x7c0903a6; |
3831 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3832 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3833 | static const uint32_t mtlr_0 = 0x7c0803a6; |
34e0882b | 3834 | static const uint32_t mtlr_11 = 0x7d6803a6; |
c9269dff | 3835 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3836 | static const uint32_t nop = 0x60000000; |
c9269dff | 3837 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3838 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3839 | static const uint32_t std_0_1 = 0xf8010000; |
3840 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3841 | static const uint32_t std_2_1 = 0xf8410000; |
34e0882b | 3842 | static const uint32_t std_11_1 = 0xf9610000; |
f3a0ed29 AM |
3843 | static const uint32_t stfd_0_1 = 0xd8010000; |
3844 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3845 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3846 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3847 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3848 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3849 | |
3850 | // Write out the PLT. | |
3851 | ||
3852 | template<int size, bool big_endian> | |
3853 | void | |
3854 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3855 | { | |
b3ccdeb5 | 3856 | if (size == 32 && this->name_[3] != 'I') |
cf43a2fe | 3857 | { |
ec661b9d | 3858 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3859 | const section_size_type oview_size |
3860 | = convert_to_section_size_type(this->data_size()); | |
3861 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3862 | unsigned char* pov = oview; | |
3863 | unsigned char* endpov = oview + oview_size; | |
3864 | ||
e5d5f5ed | 3865 | // The address of the .glink branch table |
cf43a2fe AM |
3866 | const Output_data_glink<size, big_endian>* glink |
3867 | = this->targ_->glink_section(); | |
ec661b9d | 3868 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3869 | |
3870 | while (pov < endpov) | |
3871 | { | |
3872 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3873 | pov += 4; | |
3874 | branch_tab += 4; | |
3875 | } | |
3876 | ||
3877 | of->write_output_view(offset, oview_size, oview); | |
3878 | } | |
3879 | } | |
3880 | ||
3881 | // Create the PLT section. | |
3882 | ||
3883 | template<int size, bool big_endian> | |
3884 | void | |
40b469d7 AM |
3885 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
3886 | Layout* layout) | |
cf43a2fe AM |
3887 | { |
3888 | if (this->plt_ == NULL) | |
3889 | { | |
40b469d7 AM |
3890 | if (this->got_ == NULL) |
3891 | this->got_section(symtab, layout); | |
3892 | ||
cf43a2fe AM |
3893 | if (this->glink_ == NULL) |
3894 | make_glink_section(layout); | |
3895 | ||
3896 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
3897 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 3898 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
3899 | this->rela_dyn_section(layout); |
3900 | ||
e5d5f5ed AM |
3901 | Reloc_section* plt_rel = new Reloc_section(false); |
3902 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
3903 | elfcpp::SHF_ALLOC, plt_rel, | |
3904 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
3905 | this->plt_ | |
3906 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 3907 | "** PLT"); |
cf43a2fe AM |
3908 | layout->add_output_section_data(".plt", |
3909 | (size == 32 | |
3910 | ? elfcpp::SHT_PROGBITS | |
3911 | : elfcpp::SHT_NOBITS), | |
3912 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3913 | this->plt_, | |
3914 | (size == 32 | |
3915 | ? ORDER_SMALL_DATA | |
3916 | : ORDER_SMALL_BSS), | |
3917 | false); | |
3254d32c AM |
3918 | |
3919 | Output_section* rela_plt_os = plt_rel->output_section(); | |
3920 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
3921 | } |
3922 | } | |
3923 | ||
e5d5f5ed AM |
3924 | // Create the IPLT section. |
3925 | ||
3926 | template<int size, bool big_endian> | |
3927 | void | |
40b469d7 AM |
3928 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
3929 | Layout* layout) | |
e5d5f5ed AM |
3930 | { |
3931 | if (this->iplt_ == NULL) | |
3932 | { | |
40b469d7 | 3933 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
3934 | |
3935 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
3936 | if (this->rela_dyn_->output_section()) |
3937 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
3938 | this->iplt_ |
3939 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 3940 | "** IPLT"); |
6528b6eb AM |
3941 | if (this->plt_->output_section()) |
3942 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
3943 | } |
3944 | } | |
3945 | ||
ec661b9d | 3946 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
3947 | |
3948 | template<int size, bool big_endian> | |
ec661b9d | 3949 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
3950 | { |
3951 | public: | |
ec661b9d AM |
3952 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
3953 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3954 | size, big_endian> Reloc_section; | |
c9269dff | 3955 | |
ec661b9d AM |
3956 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
3957 | Reloc_section* brlt_rel) | |
3958 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3959 | rel_(brlt_rel), | |
3960 | targ_(targ) | |
3961 | { } | |
cf43a2fe | 3962 | |
06f30c9d CC |
3963 | void |
3964 | reset_brlt_sizes() | |
3965 | { | |
3966 | this->reset_data_size(); | |
3967 | this->rel_->reset_data_size(); | |
3968 | } | |
3969 | ||
3970 | void | |
3971 | finalize_brlt_sizes() | |
3972 | { | |
3973 | this->finalize_data_size(); | |
3974 | this->rel_->finalize_data_size(); | |
3975 | } | |
3976 | ||
ec661b9d | 3977 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 3978 | void |
ec661b9d AM |
3979 | add_reloc(Address to, unsigned int off) |
3980 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 3981 | |
ec661b9d | 3982 | // Update section and reloc section size. |
e5d5f5ed | 3983 | void |
ec661b9d AM |
3984 | set_current_size(unsigned int num_branches) |
3985 | { | |
3986 | this->reset_address_and_file_offset(); | |
3987 | this->set_current_data_size(num_branches * 16); | |
3988 | this->finalize_data_size(); | |
3989 | Output_section* os = this->output_section(); | |
3990 | os->set_section_offsets_need_adjustment(); | |
3991 | if (this->rel_ != NULL) | |
3992 | { | |
0e123f69 | 3993 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
3994 | this->rel_->reset_address_and_file_offset(); |
3995 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
3996 | this->rel_->finalize_data_size(); | |
3997 | Output_section* os = this->rel_->output_section(); | |
3998 | os->set_section_offsets_need_adjustment(); | |
3999 | } | |
4000 | } | |
cf43a2fe | 4001 | |
ec661b9d AM |
4002 | protected: |
4003 | void | |
4004 | do_adjust_output_section(Output_section* os) | |
4005 | { | |
4006 | os->set_entsize(0); | |
4007 | } | |
e5d5f5ed | 4008 | |
ec661b9d AM |
4009 | // Write to a map file. |
4010 | void | |
4011 | do_print_to_mapfile(Mapfile* mapfile) const | |
4012 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 4013 | |
ec661b9d AM |
4014 | private: |
4015 | // Write out the BRLT data. | |
4016 | void | |
4017 | do_write(Output_file*); | |
c9824451 | 4018 | |
ec661b9d AM |
4019 | // The reloc section. |
4020 | Reloc_section* rel_; | |
4021 | Target_powerpc<size, big_endian>* targ_; | |
4022 | }; | |
cf43a2fe | 4023 | |
ec661b9d AM |
4024 | // Make the branch lookup table section. |
4025 | ||
4026 | template<int size, bool big_endian> | |
4027 | void | |
4028 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
4029 | { | |
4030 | if (size == 64 && this->brlt_section_ == NULL) | |
4031 | { | |
4032 | Reloc_section* brlt_rel = NULL; | |
4033 | bool is_pic = parameters->options().output_is_position_independent(); | |
4034 | if (is_pic) | |
4035 | { | |
6830ee24 AM |
4036 | // When PIC we can't fill in .branch_lt (like .plt it can be |
4037 | // a bss style section) but must initialise at runtime via | |
6528b6eb | 4038 | // dynamic relocations. |
ec661b9d AM |
4039 | this->rela_dyn_section(layout); |
4040 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
4041 | if (this->rela_dyn_->output_section()) |
4042 | this->rela_dyn_->output_section() | |
4043 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
4044 | } |
4045 | this->brlt_section_ | |
4046 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 4047 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
4048 | this->plt_->output_section() |
4049 | ->add_output_section_data(this->brlt_section_); | |
4050 | else | |
6830ee24 | 4051 | layout->add_output_section_data(".branch_lt", |
ec661b9d AM |
4052 | (is_pic ? elfcpp::SHT_NOBITS |
4053 | : elfcpp::SHT_PROGBITS), | |
4054 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4055 | this->brlt_section_, | |
4056 | (is_pic ? ORDER_SMALL_BSS | |
4057 | : ORDER_SMALL_DATA), | |
4058 | false); | |
4059 | } | |
4060 | } | |
4061 | ||
6830ee24 | 4062 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
4063 | |
4064 | template<int size, bool big_endian> | |
4065 | void | |
4066 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4067 | { | |
4068 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
4069 | { | |
4070 | const section_size_type offset = this->offset(); | |
4071 | const section_size_type oview_size | |
4072 | = convert_to_section_size_type(this->data_size()); | |
4073 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4074 | ||
4075 | this->targ_->write_branch_lookup_table(oview); | |
4076 | of->write_output_view(offset, oview_size, oview); | |
4077 | } | |
4078 | } | |
4079 | ||
9e69ed50 AM |
4080 | static inline uint32_t |
4081 | l(uint32_t a) | |
4082 | { | |
4083 | return a & 0xffff; | |
4084 | } | |
4085 | ||
4086 | static inline uint32_t | |
4087 | hi(uint32_t a) | |
4088 | { | |
4089 | return l(a >> 16); | |
4090 | } | |
4091 | ||
4092 | static inline uint32_t | |
4093 | ha(uint32_t a) | |
4094 | { | |
4095 | return hi(a + 0x8000); | |
4096 | } | |
4097 | ||
9d5781f8 AM |
4098 | template<int size> |
4099 | struct Eh_cie | |
4100 | { | |
4101 | static const unsigned char eh_frame_cie[12]; | |
4102 | }; | |
4103 | ||
4104 | template<int size> | |
4105 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
4106 | { | |
4107 | 1, // CIE version. | |
4108 | 'z', 'R', 0, // Augmentation string. | |
4109 | 4, // Code alignment. | |
4110 | 0x80 - size / 8 , // Data alignment. | |
4111 | 65, // RA reg. | |
4112 | 1, // Augmentation size. | |
4113 | (elfcpp::DW_EH_PE_pcrel | |
4114 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
4115 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
4116 | }; | |
4117 | ||
b4f7960d AM |
4118 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
4119 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
4120 | { |
4121 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4122 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4123 | 0, // Augmentation size. | |
4124 | elfcpp::DW_CFA_advance_loc + 1, | |
4125 | elfcpp::DW_CFA_register, 65, 12, | |
15a3a14f | 4126 | elfcpp::DW_CFA_advance_loc + 5, |
9d5781f8 AM |
4127 | elfcpp::DW_CFA_restore_extended, 65 |
4128 | }; | |
4129 | ||
b4f7960d AM |
4130 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
4131 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
4132 | { | |
4133 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4134 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4135 | 0, // Augmentation size. | |
4136 | elfcpp::DW_CFA_advance_loc + 1, | |
4137 | elfcpp::DW_CFA_register, 65, 0, | |
15a3a14f | 4138 | elfcpp::DW_CFA_advance_loc + 7, |
b4f7960d AM |
4139 | elfcpp::DW_CFA_restore_extended, 65 |
4140 | }; | |
4141 | ||
9d5781f8 AM |
4142 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4143 | static const unsigned char glink_eh_frame_fde_32[] = | |
4144 | { | |
4145 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4146 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4147 | 0, // Augmentation size. | |
4148 | elfcpp::DW_CFA_advance_loc + 2, | |
4149 | elfcpp::DW_CFA_register, 65, 0, | |
4150 | elfcpp::DW_CFA_advance_loc + 4, | |
4151 | elfcpp::DW_CFA_restore_extended, 65 | |
4152 | }; | |
4153 | ||
4154 | static const unsigned char default_fde[] = | |
4155 | { | |
4156 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4157 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4158 | 0, // Augmentation size. | |
4159 | elfcpp::DW_CFA_nop, // Pad. | |
4160 | elfcpp::DW_CFA_nop, | |
4161 | elfcpp::DW_CFA_nop | |
4162 | }; | |
4163 | ||
9e69ed50 AM |
4164 | template<bool big_endian> |
4165 | static inline void | |
4166 | write_insn(unsigned char* p, uint32_t v) | |
4167 | { | |
4168 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4169 | } | |
4170 | ||
1be5d8d3 AM |
4171 | template<bool big_endian> |
4172 | static unsigned char* | |
4173 | output_bctr(unsigned char* p) | |
4174 | { | |
4175 | if (!parameters->options().speculate_indirect_jumps()) | |
4176 | { | |
4177 | write_insn<big_endian>(p, crseteq); | |
4178 | p += 4; | |
4179 | write_insn<big_endian>(p, beqctrm); | |
4180 | p += 4; | |
4181 | write_insn<big_endian>(p, b); | |
4182 | } | |
4183 | else | |
4184 | write_insn<big_endian>(p, bctr); | |
4185 | p += 4; | |
4186 | return p; | |
4187 | } | |
4188 | ||
691d2e9a AM |
4189 | template<int size> |
4190 | static inline unsigned int | |
4191 | param_plt_align() | |
4192 | { | |
4193 | if (!parameters->options().user_set_plt_align()) | |
4194 | return size == 64 ? 32 : 8; | |
4195 | return 1 << parameters->options().plt_align(); | |
4196 | } | |
4197 | ||
ec661b9d AM |
4198 | // Stub_table holds information about plt and long branch stubs. |
4199 | // Stubs are built in an area following some input section determined | |
4200 | // by group_sections(). This input section is converted to a relaxed | |
4201 | // input section allowing it to be resized to accommodate the stubs | |
4202 | ||
4203 | template<int size, bool big_endian> | |
4204 | class Stub_table : public Output_relaxed_input_section | |
4205 | { | |
4206 | public: | |
7e57d19e AM |
4207 | struct Plt_stub_ent |
4208 | { | |
4209 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
7ee7ff70 | 4210 | : off_(off), indx_(indx), r2save_(0), localentry0_(0) |
7e57d19e AM |
4211 | { } |
4212 | ||
4213 | unsigned int off_; | |
7ee7ff70 | 4214 | unsigned int indx_ : 30; |
7e57d19e | 4215 | unsigned int r2save_ : 1; |
7ee7ff70 | 4216 | unsigned int localentry0_ : 1; |
7e57d19e | 4217 | }; |
ec661b9d AM |
4218 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4219 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4220 | ||
a3e60ddb AM |
4221 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4222 | Output_section* output_section, | |
590b87ff AM |
4223 | const Output_section::Input_section* owner, |
4224 | uint32_t id) | |
a3e60ddb AM |
4225 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4226 | owner->relobj() | |
4227 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4228 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4229 | orig_data_size_(owner->current_data_size()), |
4230 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4231 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
34e0882b AM |
4232 | need_save_res_(false), uniq_(id), tls_get_addr_opt_bctrl_(-1u), |
4233 | plt_fde_len_(0) | |
a3e60ddb AM |
4234 | { |
4235 | this->set_output_section(output_section); | |
ec661b9d | 4236 | |
a3e60ddb AM |
4237 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4238 | new_relaxed.push_back(this); | |
4239 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4240 | } | |
ec661b9d AM |
4241 | |
4242 | // Add a plt call stub. | |
a3e60ddb AM |
4243 | bool |
4244 | add_plt_call_entry(Address, | |
4245 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4246 | const Symbol*, |
4247 | unsigned int, | |
7e57d19e AM |
4248 | Address, |
4249 | bool); | |
ec661b9d | 4250 | |
a3e60ddb AM |
4251 | bool |
4252 | add_plt_call_entry(Address, | |
4253 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4254 | unsigned int, |
4255 | unsigned int, | |
7e57d19e AM |
4256 | Address, |
4257 | bool); | |
ec661b9d AM |
4258 | |
4259 | // Find a given plt call stub. | |
7e57d19e | 4260 | const Plt_stub_ent* |
ec661b9d AM |
4261 | find_plt_call_entry(const Symbol*) const; |
4262 | ||
7e57d19e | 4263 | const Plt_stub_ent* |
ec661b9d AM |
4264 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4265 | unsigned int) const; | |
4266 | ||
7e57d19e | 4267 | const Plt_stub_ent* |
ec661b9d AM |
4268 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4269 | const Symbol*, | |
4270 | unsigned int, | |
4271 | Address) const; | |
4272 | ||
7e57d19e | 4273 | const Plt_stub_ent* |
ec661b9d AM |
4274 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4275 | unsigned int, | |
4276 | unsigned int, | |
4277 | Address) const; | |
4278 | ||
4279 | // Add a long branch stub. | |
a3e60ddb AM |
4280 | bool |
4281 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 4282 | unsigned int, Address, Address, bool); |
ec661b9d AM |
4283 | |
4284 | Address | |
9d5781f8 AM |
4285 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4286 | Address) const; | |
ec661b9d | 4287 | |
a3e60ddb AM |
4288 | bool |
4289 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4290 | { | |
cbcb23fa | 4291 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
4292 | if (max_branch_offset == 0) |
4293 | return true; | |
4294 | gold_assert(from != invalid_address); | |
4295 | Address loc = off + this->stub_address(); | |
4296 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4297 | } | |
4298 | ||
ec661b9d | 4299 | void |
a3e60ddb | 4300 | clear_stubs(bool all) |
cf43a2fe | 4301 | { |
9e69ed50 AM |
4302 | this->plt_call_stubs_.clear(); |
4303 | this->plt_size_ = 0; | |
ec661b9d AM |
4304 | this->long_branch_stubs_.clear(); |
4305 | this->branch_size_ = 0; | |
d49044c7 | 4306 | this->need_save_res_ = false; |
a3e60ddb AM |
4307 | if (all) |
4308 | { | |
4309 | this->last_plt_size_ = 0; | |
4310 | this->last_branch_size_ = 0; | |
4311 | } | |
cf43a2fe AM |
4312 | } |
4313 | ||
ec661b9d AM |
4314 | Address |
4315 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4316 | { |
ec661b9d AM |
4317 | Address start_off = off; |
4318 | off += this->orig_data_size_; | |
4319 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4320 | if (this->need_save_res_) |
4321 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4322 | if (my_size != 0) |
4323 | off = align_address(off, this->stub_align()); | |
4324 | // Include original section size and alignment padding in size | |
4325 | my_size += off - start_off; | |
6395d38b HS |
4326 | // Ensure new size is always larger than min size |
4327 | // threshold. Alignment requirement is included in "my_size", so | |
4328 | // increase "my_size" does not invalidate alignment. | |
4329 | if (my_size < this->min_size_threshold_) | |
4330 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4331 | this->reset_address_and_file_offset(); |
4332 | this->set_current_data_size(my_size); | |
4333 | this->set_address_and_file_offset(os->address() + start_off, | |
4334 | os->offset() + start_off); | |
4335 | return my_size; | |
cf43a2fe AM |
4336 | } |
4337 | ||
ec661b9d | 4338 | Address |
9d5781f8 | 4339 | stub_address() const |
ec661b9d AM |
4340 | { |
4341 | return align_address(this->address() + this->orig_data_size_, | |
4342 | this->stub_align()); | |
4343 | } | |
4344 | ||
4345 | Address | |
9d5781f8 | 4346 | stub_offset() const |
ec661b9d AM |
4347 | { |
4348 | return align_address(this->offset() + this->orig_data_size_, | |
4349 | this->stub_align()); | |
4350 | } | |
4351 | ||
4352 | section_size_type | |
4353 | plt_size() const | |
4354 | { return this->plt_size_; } | |
4355 | ||
590b87ff AM |
4356 | void |
4357 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4358 | { this->min_size_threshold_ = min_size; } |
4359 | ||
590b87ff AM |
4360 | void |
4361 | define_stub_syms(Symbol_table*); | |
4362 | ||
ec661b9d AM |
4363 | bool |
4364 | size_update() | |
4365 | { | |
4366 | Output_section* os = this->output_section(); | |
4367 | if (os->addralign() < this->stub_align()) | |
4368 | { | |
4369 | os->set_addralign(this->stub_align()); | |
4370 | // FIXME: get rid of the insane checkpointing. | |
4371 | // We can't increase alignment of the input section to which | |
4372 | // stubs are attached; The input section may be .init which | |
4373 | // is pasted together with other .init sections to form a | |
4374 | // function. Aligning might insert zero padding resulting in | |
4375 | // sigill. However we do need to increase alignment of the | |
4376 | // output section so that the align_address() on offset in | |
4377 | // set_address_and_size() adds the same padding as the | |
4378 | // align_address() on address in stub_address(). | |
4379 | // What's more, we need this alignment for the layout done in | |
4380 | // relaxation_loop_body() so that the output section starts at | |
4381 | // a suitably aligned address. | |
4382 | os->checkpoint_set_addralign(this->stub_align()); | |
4383 | } | |
9e69ed50 AM |
4384 | if (this->last_plt_size_ != this->plt_size_ |
4385 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4386 | { |
9e69ed50 AM |
4387 | this->last_plt_size_ = this->plt_size_; |
4388 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4389 | return true; |
4390 | } | |
4391 | return false; | |
4392 | } | |
4393 | ||
34e0882b | 4394 | // Generate a suitable FDE to describe code in this stub group. |
9d5781f8 | 4395 | void |
34e0882b | 4396 | init_plt_fde(); |
be897fb7 | 4397 | |
34e0882b AM |
4398 | // Add .eh_frame info for this stub section. |
4399 | void | |
4400 | add_eh_frame(Layout* layout); | |
be897fb7 | 4401 | |
34e0882b | 4402 | // Remove .eh_frame info for this stub section. |
be897fb7 | 4403 | void |
34e0882b | 4404 | remove_eh_frame(Layout* layout); |
9d5781f8 | 4405 | |
ec661b9d AM |
4406 | Target_powerpc<size, big_endian>* |
4407 | targ() const | |
4408 | { return targ_; } | |
6ce78956 | 4409 | |
cf43a2fe | 4410 | private: |
bdab445c AM |
4411 | class Plt_stub_key; |
4412 | class Plt_stub_key_hash; | |
bdab445c AM |
4413 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4414 | Plt_stub_key_hash> Plt_stub_entries; | |
590b87ff AM |
4415 | class Branch_stub_ent; |
4416 | class Branch_stub_ent_hash; | |
4417 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
4418 | Branch_stub_ent_hash> Branch_stub_entries; | |
9e69ed50 AM |
4419 | |
4420 | // Alignment of stub section. | |
ec661b9d | 4421 | unsigned int |
9e69ed50 AM |
4422 | stub_align() const |
4423 | { | |
691d2e9a | 4424 | unsigned int min_align = size == 64 ? 32 : 16; |
9e69ed50 AM |
4425 | unsigned int user_align = 1 << parameters->options().plt_align(); |
4426 | return std::max(user_align, min_align); | |
4427 | } | |
cf43a2fe | 4428 | |
91c2b899 AM |
4429 | // Return the plt offset for the given call stub. |
4430 | Address | |
4431 | plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const | |
4432 | { | |
4433 | const Symbol* gsym = p->first.sym_; | |
4434 | if (gsym != NULL) | |
4435 | { | |
4436 | *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
4437 | && gsym->can_use_relative_reloc(false)); | |
4438 | return gsym->plt_offset(); | |
4439 | } | |
4440 | else | |
4441 | { | |
4442 | *is_iplt = true; | |
4443 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; | |
4444 | unsigned int local_sym_index = p->first.locsym_; | |
4445 | return relobj->local_plt_offset(local_sym_index); | |
4446 | } | |
4447 | } | |
4448 | ||
9e69ed50 | 4449 | // Size of a given plt call stub. |
ec661b9d | 4450 | unsigned int |
9e69ed50 AM |
4451 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
4452 | { | |
4453 | if (size == 32) | |
34e0882b AM |
4454 | { |
4455 | const Symbol* gsym = p->first.sym_; | |
9e390558 | 4456 | return (4 * 4 |
1be5d8d3 | 4457 | + (!parameters->options().speculate_indirect_jumps() ? 2 * 4 : 0) |
9e390558 | 4458 | + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); |
34e0882b | 4459 | } |
9e69ed50 | 4460 | |
91c2b899 AM |
4461 | bool is_iplt; |
4462 | Address plt_addr = this->plt_off(p, &is_iplt); | |
4463 | if (is_iplt) | |
4464 | plt_addr += this->targ_->iplt_section()->address(); | |
9e69ed50 | 4465 | else |
91c2b899 AM |
4466 | plt_addr += this->targ_->plt_section()->address(); |
4467 | Address got_addr = this->targ_->got_section()->output_section()->address(); | |
9e69ed50 AM |
4468 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
4469 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
4470 | got_addr += ppcobj->toc_base_offset(); |
4471 | Address off = plt_addr - got_addr; | |
b4f7960d | 4472 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
1be5d8d3 AM |
4473 | if (!parameters->options().speculate_indirect_jumps()) |
4474 | bytes += 2 * 4; | |
34e0882b AM |
4475 | const Symbol* gsym = p->first.sym_; |
4476 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
4477 | bytes += 13 * 4; | |
b4f7960d AM |
4478 | if (this->targ_->abiversion() < 2) |
4479 | { | |
4480 | bool static_chain = parameters->options().plt_static_chain(); | |
4481 | bool thread_safe = this->targ_->plt_thread_safe(); | |
4482 | bytes += (4 | |
4483 | + 4 * static_chain | |
4484 | + 8 * thread_safe | |
4485 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
4486 | } | |
34e0882b AM |
4487 | return bytes; |
4488 | } | |
4489 | ||
4490 | unsigned int | |
4491 | plt_call_align(unsigned int bytes) const | |
4492 | { | |
691d2e9a | 4493 | unsigned int align = param_plt_align<size>(); |
9e390558 | 4494 | return (bytes + align - 1) & -align; |
9e69ed50 | 4495 | } |
ec661b9d AM |
4496 | |
4497 | // Return long branch stub size. | |
4498 | unsigned int | |
590b87ff | 4499 | branch_stub_size(typename Branch_stub_entries::const_iterator p) |
ec661b9d | 4500 | { |
590b87ff AM |
4501 | Address loc = this->stub_address() + this->last_plt_size_ + p->second; |
4502 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
ec661b9d | 4503 | return 4; |
9e390558 | 4504 | unsigned int bytes = 16; |
1be5d8d3 AM |
4505 | if (!parameters->options().speculate_indirect_jumps()) |
4506 | bytes += 8; | |
9e390558 AM |
4507 | if (size == 32 && parameters->options().output_is_position_independent()) |
4508 | bytes += 16; | |
4509 | return bytes; | |
ec661b9d AM |
4510 | } |
4511 | ||
4512 | // Write out stubs. | |
cf43a2fe AM |
4513 | void |
4514 | do_write(Output_file*); | |
4515 | ||
ec661b9d | 4516 | // Plt call stub keys. |
bdab445c | 4517 | class Plt_stub_key |
cf43a2fe | 4518 | { |
d1a8cabd | 4519 | public: |
bdab445c | 4520 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
4521 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
4522 | { } | |
4523 | ||
bdab445c | 4524 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 4525 | unsigned int locsym_index) |
c9824451 AM |
4526 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4527 | { } | |
4528 | ||
bdab445c | 4529 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4530 | const Symbol* sym, |
4531 | unsigned int r_type, | |
4532 | Address addend) | |
e5d5f5ed | 4533 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
4534 | { |
4535 | if (size != 32) | |
ec661b9d | 4536 | this->addend_ = addend; |
d1a8cabd | 4537 | else if (parameters->options().output_is_position_independent() |
ec661b9d | 4538 | && r_type == elfcpp::R_PPC_PLTREL24) |
cf43a2fe | 4539 | { |
ec661b9d | 4540 | this->addend_ = addend; |
e5d5f5ed | 4541 | if (this->addend_ >= 32768) |
d1a8cabd | 4542 | this->object_ = object; |
cf43a2fe AM |
4543 | } |
4544 | } | |
4545 | ||
bdab445c | 4546 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4547 | unsigned int locsym_index, |
4548 | unsigned int r_type, | |
4549 | Address addend) | |
e5d5f5ed AM |
4550 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4551 | { | |
4552 | if (size != 32) | |
ec661b9d | 4553 | this->addend_ = addend; |
e5d5f5ed | 4554 | else if (parameters->options().output_is_position_independent() |
ec661b9d AM |
4555 | && r_type == elfcpp::R_PPC_PLTREL24) |
4556 | this->addend_ = addend; | |
e5d5f5ed AM |
4557 | } |
4558 | ||
bdab445c | 4559 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
4560 | { |
4561 | return (this->sym_ == that.sym_ | |
4562 | && this->object_ == that.object_ | |
e5d5f5ed AM |
4563 | && this->addend_ == that.addend_ |
4564 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 4565 | } |
c9269dff AM |
4566 | |
4567 | const Symbol* sym_; | |
e5d5f5ed AM |
4568 | const Sized_relobj_file<size, big_endian>* object_; |
4569 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
4570 | unsigned int locsym_; | |
cf43a2fe AM |
4571 | }; |
4572 | ||
bdab445c | 4573 | class Plt_stub_key_hash |
cf43a2fe | 4574 | { |
d1a8cabd | 4575 | public: |
bdab445c | 4576 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
4577 | { |
4578 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
4579 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
4580 | ^ ent.addend_ |
4581 | ^ ent.locsym_); | |
cf43a2fe | 4582 | } |
ec661b9d AM |
4583 | }; |
4584 | ||
4585 | // Long branch stub keys. | |
4586 | class Branch_stub_ent | |
4587 | { | |
4588 | public: | |
d49044c7 AM |
4589 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, |
4590 | Address to, bool save_res) | |
4591 | : dest_(to), toc_base_off_(0), save_res_(save_res) | |
ec661b9d AM |
4592 | { |
4593 | if (size == 64) | |
4594 | toc_base_off_ = obj->toc_base_offset(); | |
4595 | } | |
4596 | ||
4597 | bool operator==(const Branch_stub_ent& that) const | |
4598 | { | |
4599 | return (this->dest_ == that.dest_ | |
4600 | && (size == 32 | |
4601 | || this->toc_base_off_ == that.toc_base_off_)); | |
4602 | } | |
cf43a2fe | 4603 | |
ec661b9d AM |
4604 | Address dest_; |
4605 | unsigned int toc_base_off_; | |
d49044c7 | 4606 | bool save_res_; |
ec661b9d | 4607 | }; |
cf43a2fe | 4608 | |
ec661b9d AM |
4609 | class Branch_stub_ent_hash |
4610 | { | |
4611 | public: | |
4612 | size_t operator()(const Branch_stub_ent& ent) const | |
4613 | { return ent.dest_ ^ ent.toc_base_off_; } | |
4614 | }; | |
cf43a2fe | 4615 | |
ec661b9d | 4616 | // In a sane world this would be a global. |
cf43a2fe | 4617 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 4618 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
4619 | Plt_stub_entries plt_call_stubs_; |
4620 | // Map destination address to stub offset. | |
ec661b9d AM |
4621 | Branch_stub_entries long_branch_stubs_; |
4622 | // size of input section | |
4623 | section_size_type orig_data_size_; | |
4624 | // size of stubs | |
9e69ed50 | 4625 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
4626 | // Some rare cases cause (PR/20529) fluctuation in stub table |
4627 | // size, which leads to an endless relax loop. This is to be fixed | |
4628 | // by, after the first few iterations, allowing only increase of | |
4629 | // stub table size. This variable sets the minimal possible size of | |
4630 | // a stub table, it is zero for the first few iterations, then | |
4631 | // increases monotonically. | |
4632 | Address min_size_threshold_; | |
d49044c7 AM |
4633 | // Set if this stub group needs a copy of out-of-line register |
4634 | // save/restore functions. | |
4635 | bool need_save_res_; | |
590b87ff AM |
4636 | // Per stub table unique identifier. |
4637 | uint32_t uniq_; | |
34e0882b AM |
4638 | // The bctrl in the __tls_get_addr_opt stub, if present. |
4639 | unsigned int tls_get_addr_opt_bctrl_; | |
4640 | // FDE unwind info for this stub group. | |
4641 | unsigned int plt_fde_len_; | |
4642 | unsigned char plt_fde_[20]; | |
cf43a2fe AM |
4643 | }; |
4644 | ||
ec661b9d | 4645 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 4646 | // sym/object/addend combo. |
cf43a2fe AM |
4647 | |
4648 | template<int size, bool big_endian> | |
a3e60ddb | 4649 | bool |
ec661b9d | 4650 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4651 | Address from, |
c9824451 | 4652 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4653 | const Symbol* gsym, |
ec661b9d | 4654 | unsigned int r_type, |
7e57d19e AM |
4655 | Address addend, |
4656 | bool tocsave) | |
cf43a2fe | 4657 | { |
bdab445c AM |
4658 | Plt_stub_key key(object, gsym, r_type, addend); |
4659 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4660 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4661 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4662 | if (p.second) |
7ee7ff70 AM |
4663 | { |
4664 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
4665 | if (size == 64 | |
4666 | && this->targ_->is_elfv2_localentry0(gsym)) | |
4667 | { | |
4668 | p.first->second.localentry0_ = 1; | |
4669 | this->targ_->set_has_localentry0(); | |
4670 | } | |
34e0882b AM |
4671 | if (this->targ_->is_tls_get_addr_opt(gsym)) |
4672 | { | |
4673 | this->targ_->set_has_tls_get_addr_opt(); | |
4674 | this->tls_get_addr_opt_bctrl_ = this->plt_size_ - 5 * 4; | |
4675 | } | |
4676 | this->plt_size_ = this->plt_call_align(this->plt_size_); | |
7ee7ff70 AM |
4677 | } |
4678 | if (size == 64 | |
4679 | && !tocsave | |
4680 | && !p.first->second.localentry0_) | |
7e57d19e | 4681 | p.first->second.r2save_ = 1; |
bdab445c | 4682 | return this->can_reach_stub(from, ent.off_, r_type); |
cf43a2fe AM |
4683 | } |
4684 | ||
e5d5f5ed | 4685 | template<int size, bool big_endian> |
a3e60ddb | 4686 | bool |
ec661b9d | 4687 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4688 | Address from, |
c9824451 | 4689 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4690 | unsigned int locsym_index, |
ec661b9d | 4691 | unsigned int r_type, |
7e57d19e AM |
4692 | Address addend, |
4693 | bool tocsave) | |
e5d5f5ed | 4694 | { |
bdab445c AM |
4695 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4696 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 4697 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 4698 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
9e69ed50 | 4699 | if (p.second) |
7ee7ff70 AM |
4700 | { |
4701 | this->plt_size_ = ent.off_ + this->plt_call_size(p.first); | |
34e0882b | 4702 | this->plt_size_ = this->plt_call_align(this->plt_size_); |
7ee7ff70 AM |
4703 | if (size == 64 |
4704 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) | |
4705 | { | |
4706 | p.first->second.localentry0_ = 1; | |
4707 | this->targ_->set_has_localentry0(); | |
4708 | } | |
4709 | } | |
4710 | if (size == 64 | |
4711 | && !tocsave | |
4712 | && !p.first->second.localentry0_) | |
7e57d19e | 4713 | p.first->second.r2save_ = 1; |
bdab445c | 4714 | return this->can_reach_stub(from, ent.off_, r_type); |
e5d5f5ed AM |
4715 | } |
4716 | ||
ec661b9d AM |
4717 | // Find a plt call stub. |
4718 | ||
cf43a2fe | 4719 | template<int size, bool big_endian> |
7e57d19e | 4720 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4721 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4722 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4723 | const Symbol* gsym, |
ec661b9d AM |
4724 | unsigned int r_type, |
4725 | Address addend) const | |
c9824451 | 4726 | { |
bdab445c AM |
4727 | Plt_stub_key key(object, gsym, r_type, addend); |
4728 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4729 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4730 | return NULL; |
4731 | return &p->second; | |
c9824451 AM |
4732 | } |
4733 | ||
4734 | template<int size, bool big_endian> | |
7e57d19e | 4735 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4736 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4737 | { |
bdab445c AM |
4738 | Plt_stub_key key(gsym); |
4739 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4740 | if (p == this->plt_call_stubs_.end()) |
4741 | return NULL; | |
4742 | return &p->second; | |
cf43a2fe AM |
4743 | } |
4744 | ||
e5d5f5ed | 4745 | template<int size, bool big_endian> |
7e57d19e | 4746 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4747 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4748 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4749 | unsigned int locsym_index, |
ec661b9d AM |
4750 | unsigned int r_type, |
4751 | Address addend) const | |
e5d5f5ed | 4752 | { |
bdab445c AM |
4753 | Plt_stub_key key(object, locsym_index, r_type, addend); |
4754 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
4755 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
4756 | return NULL; |
4757 | return &p->second; | |
c9824451 AM |
4758 | } |
4759 | ||
4760 | template<int size, bool big_endian> | |
7e57d19e | 4761 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 4762 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4763 | const Sized_relobj_file<size, big_endian>* object, |
4764 | unsigned int locsym_index) const | |
4765 | { | |
bdab445c AM |
4766 | Plt_stub_key key(object, locsym_index); |
4767 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
4768 | if (p == this->plt_call_stubs_.end()) |
4769 | return NULL; | |
4770 | return &p->second; | |
ec661b9d AM |
4771 | } |
4772 | ||
4773 | // Add a long branch stub if we don't already have one to given | |
4774 | // destination. | |
4775 | ||
4776 | template<int size, bool big_endian> | |
a3e60ddb | 4777 | bool |
ec661b9d AM |
4778 | Stub_table<size, big_endian>::add_long_branch_entry( |
4779 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4780 | unsigned int r_type, |
4781 | Address from, | |
d49044c7 AM |
4782 | Address to, |
4783 | bool save_res) | |
ec661b9d | 4784 | { |
d49044c7 | 4785 | Branch_stub_ent ent(object, to, save_res); |
ec661b9d | 4786 | Address off = this->branch_size_; |
590b87ff AM |
4787 | std::pair<typename Branch_stub_entries::iterator, bool> p |
4788 | = this->long_branch_stubs_.insert(std::make_pair(ent, off)); | |
4789 | if (p.second) | |
ec661b9d | 4790 | { |
d49044c7 AM |
4791 | if (save_res) |
4792 | this->need_save_res_ = true; | |
4793 | else | |
4794 | { | |
590b87ff | 4795 | unsigned int stub_size = this->branch_stub_size(p.first); |
d49044c7 AM |
4796 | this->branch_size_ = off + stub_size; |
4797 | if (size == 64 && stub_size != 4) | |
4798 | this->targ_->add_branch_lookup_table(to); | |
4799 | } | |
ec661b9d | 4800 | } |
a3e60ddb | 4801 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4802 | } |
4803 | ||
d49044c7 | 4804 | // Find long branch stub offset. |
ec661b9d AM |
4805 | |
4806 | template<int size, bool big_endian> | |
ec5b8187 | 4807 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4808 | Stub_table<size, big_endian>::find_long_branch_entry( |
4809 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4810 | Address to) const |
ec661b9d | 4811 | { |
d49044c7 | 4812 | Branch_stub_ent ent(object, to, false); |
ec661b9d AM |
4813 | typename Branch_stub_entries::const_iterator p |
4814 | = this->long_branch_stubs_.find(ent); | |
d49044c7 AM |
4815 | if (p == this->long_branch_stubs_.end()) |
4816 | return invalid_address; | |
4817 | if (p->first.save_res_) | |
4818 | return to - this->targ_->savres_section()->address() + this->branch_size_; | |
4819 | return p->second; | |
e5d5f5ed AM |
4820 | } |
4821 | ||
34e0882b AM |
4822 | // Generate a suitable FDE to describe code in this stub group. |
4823 | // The __tls_get_addr_opt call stub needs to describe where it saves | |
4824 | // LR, to support exceptions that might be thrown from __tls_get_addr. | |
4825 | ||
4826 | template<int size, bool big_endian> | |
4827 | void | |
4828 | Stub_table<size, big_endian>::init_plt_fde() | |
4829 | { | |
4830 | unsigned char* p = this->plt_fde_; | |
4831 | // offset pcrel sdata4, size udata4, and augmentation size byte. | |
4832 | memset (p, 0, 9); | |
4833 | p += 9; | |
4834 | if (this->tls_get_addr_opt_bctrl_ != -1u) | |
4835 | { | |
4836 | unsigned int to_bctrl = this->tls_get_addr_opt_bctrl_ / 4; | |
4837 | if (to_bctrl < 64) | |
4838 | *p++ = elfcpp::DW_CFA_advance_loc + to_bctrl; | |
4839 | else if (to_bctrl < 256) | |
4840 | { | |
4841 | *p++ = elfcpp::DW_CFA_advance_loc1; | |
4842 | *p++ = to_bctrl; | |
4843 | } | |
4844 | else if (to_bctrl < 65536) | |
4845 | { | |
4846 | *p++ = elfcpp::DW_CFA_advance_loc2; | |
4847 | elfcpp::Swap<16, big_endian>::writeval(p, to_bctrl); | |
4848 | p += 2; | |
4849 | } | |
4850 | else | |
4851 | { | |
4852 | *p++ = elfcpp::DW_CFA_advance_loc4; | |
4853 | elfcpp::Swap<32, big_endian>::writeval(p, to_bctrl); | |
4854 | p += 4; | |
4855 | } | |
4856 | *p++ = elfcpp::DW_CFA_offset_extended_sf; | |
4857 | *p++ = 65; | |
4858 | *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; | |
4859 | *p++ = elfcpp::DW_CFA_advance_loc + 4; | |
4860 | *p++ = elfcpp::DW_CFA_restore_extended; | |
4861 | *p++ = 65; | |
4862 | } | |
4863 | this->plt_fde_len_ = p - this->plt_fde_; | |
4864 | } | |
4865 | ||
4866 | // Add .eh_frame info for this stub section. Unlike other linker | |
4867 | // generated .eh_frame this is added late in the link, because we | |
4868 | // only want the .eh_frame info if this particular stub section is | |
4869 | // non-empty. | |
4870 | ||
4871 | template<int size, bool big_endian> | |
4872 | void | |
4873 | Stub_table<size, big_endian>::add_eh_frame(Layout* layout) | |
4874 | { | |
4875 | if (!parameters->options().ld_generated_unwind_info()) | |
4876 | return; | |
4877 | ||
4878 | // Since we add stub .eh_frame info late, it must be placed | |
4879 | // after all other linker generated .eh_frame info so that | |
4880 | // merge mapping need not be updated for input sections. | |
4881 | // There is no provision to use a different CIE to that used | |
4882 | // by .glink. | |
4883 | if (!this->targ_->has_glink()) | |
4884 | return; | |
4885 | ||
4886 | if (this->plt_size_ + this->branch_size_ + this->need_save_res_ == 0) | |
4887 | return; | |
4888 | ||
4889 | this->init_plt_fde(); | |
4890 | layout->add_eh_frame_for_plt(this, | |
4891 | Eh_cie<size>::eh_frame_cie, | |
4892 | sizeof (Eh_cie<size>::eh_frame_cie), | |
4893 | this->plt_fde_, this->plt_fde_len_); | |
4894 | } | |
4895 | ||
4896 | template<int size, bool big_endian> | |
4897 | void | |
4898 | Stub_table<size, big_endian>::remove_eh_frame(Layout* layout) | |
4899 | { | |
4900 | if (this->plt_fde_len_ != 0) | |
4901 | { | |
4902 | layout->remove_eh_frame_for_plt(this, | |
4903 | Eh_cie<size>::eh_frame_cie, | |
4904 | sizeof (Eh_cie<size>::eh_frame_cie), | |
4905 | this->plt_fde_, this->plt_fde_len_); | |
4906 | this->plt_fde_len_ = 0; | |
4907 | } | |
4908 | } | |
4909 | ||
ec661b9d AM |
4910 | // A class to handle .glink. |
4911 | ||
4912 | template<int size, bool big_endian> | |
4913 | class Output_data_glink : public Output_section_data | |
4914 | { | |
4915 | public: | |
9055360d AM |
4916 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4917 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
4918 | |
4919 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
4920 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
4921 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
4922 | { } |
4923 | ||
9d5781f8 | 4924 | void |
9055360d | 4925 | add_eh_frame(Layout* layout); |
9d5781f8 | 4926 | |
9055360d AM |
4927 | void |
4928 | add_global_entry(const Symbol*); | |
4929 | ||
4930 | Address | |
4931 | find_global_entry(const Symbol*) const; | |
4932 | ||
9e390558 AM |
4933 | unsigned int |
4934 | global_entry_align(unsigned int off) const | |
4935 | { | |
691d2e9a | 4936 | unsigned int align = param_plt_align<size>(); |
9e390558 AM |
4937 | return (off + align - 1) & -align; |
4938 | } | |
4939 | ||
4940 | unsigned int | |
4941 | global_entry_off() const | |
4942 | { | |
4943 | return this->global_entry_align(this->end_branch_table_); | |
4944 | } | |
4945 | ||
9055360d AM |
4946 | Address |
4947 | global_entry_address() const | |
4948 | { | |
4949 | gold_assert(this->is_data_size_valid()); | |
9e390558 AM |
4950 | return this->address() + this->global_entry_off(); |
4951 | } | |
4952 | ||
4953 | int | |
4954 | pltresolve_size() const | |
4955 | { | |
4956 | if (size == 64) | |
4957 | return (8 | |
1be5d8d3 AM |
4958 | + (this->targ_->abiversion() < 2 ? 11 * 4 : 14 * 4) |
4959 | + (!parameters->options().speculate_indirect_jumps() ? 2 * 4 : 0)); | |
9e390558 | 4960 | return 16 * 4; |
9d5781f8 AM |
4961 | } |
4962 | ||
ec661b9d AM |
4963 | protected: |
4964 | // Write to a map file. | |
4965 | void | |
4966 | do_print_to_mapfile(Mapfile* mapfile) const | |
4967 | { mapfile->print_output_data(this, _("** glink")); } | |
4968 | ||
4969 | private: | |
4970 | void | |
4971 | set_final_data_size(); | |
4972 | ||
4973 | // Write out .glink | |
4974 | void | |
4975 | do_write(Output_file*); | |
4976 | ||
4977 | // Allows access to .got and .plt for do_write. | |
4978 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
4979 | |
4980 | // Map sym to stub offset. | |
4981 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
4982 | Global_entry_stub_entries global_entry_stubs_; | |
4983 | ||
4984 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
4985 | }; |
4986 | ||
9055360d AM |
4987 | template<int size, bool big_endian> |
4988 | void | |
4989 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
4990 | { | |
4991 | if (!parameters->options().ld_generated_unwind_info()) | |
4992 | return; | |
4993 | ||
4994 | if (size == 64) | |
4995 | { | |
4996 | if (this->targ_->abiversion() < 2) | |
4997 | layout->add_eh_frame_for_plt(this, | |
4998 | Eh_cie<64>::eh_frame_cie, | |
4999 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5000 | glink_eh_frame_fde_64v1, | |
5001 | sizeof (glink_eh_frame_fde_64v1)); | |
5002 | else | |
5003 | layout->add_eh_frame_for_plt(this, | |
5004 | Eh_cie<64>::eh_frame_cie, | |
5005 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5006 | glink_eh_frame_fde_64v2, | |
5007 | sizeof (glink_eh_frame_fde_64v2)); | |
5008 | } | |
5009 | else | |
5010 | { | |
5011 | // 32-bit .glink can use the default since the CIE return | |
5012 | // address reg, LR, is valid. | |
5013 | layout->add_eh_frame_for_plt(this, | |
5014 | Eh_cie<32>::eh_frame_cie, | |
5015 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5016 | default_fde, | |
5017 | sizeof (default_fde)); | |
5018 | // Except where LR is used in a PIC __glink_PLTresolve. | |
5019 | if (parameters->options().output_is_position_independent()) | |
5020 | layout->add_eh_frame_for_plt(this, | |
5021 | Eh_cie<32>::eh_frame_cie, | |
5022 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5023 | glink_eh_frame_fde_32, | |
5024 | sizeof (glink_eh_frame_fde_32)); | |
5025 | } | |
5026 | } | |
5027 | ||
5028 | template<int size, bool big_endian> | |
5029 | void | |
5030 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
5031 | { | |
9e390558 | 5032 | unsigned int off = this->global_entry_align(this->ge_size_); |
9055360d | 5033 | std::pair<typename Global_entry_stub_entries::iterator, bool> p |
9e390558 | 5034 | = this->global_entry_stubs_.insert(std::make_pair(gsym, off)); |
9055360d | 5035 | if (p.second) |
1be5d8d3 AM |
5036 | this->ge_size_ |
5037 | = off + 16 + (!parameters->options().speculate_indirect_jumps() ? 8 : 0); | |
9055360d AM |
5038 | } |
5039 | ||
5040 | template<int size, bool big_endian> | |
5041 | typename Output_data_glink<size, big_endian>::Address | |
5042 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
5043 | { | |
5044 | typename Global_entry_stub_entries::const_iterator p | |
5045 | = this->global_entry_stubs_.find(gsym); | |
5046 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
5047 | } | |
5048 | ||
cf43a2fe AM |
5049 | template<int size, bool big_endian> |
5050 | void | |
5051 | Output_data_glink<size, big_endian>::set_final_data_size() | |
5052 | { | |
ec661b9d AM |
5053 | unsigned int count = this->targ_->plt_entry_count(); |
5054 | section_size_type total = 0; | |
cf43a2fe AM |
5055 | |
5056 | if (count != 0) | |
5057 | { | |
5058 | if (size == 32) | |
5059 | { | |
cf43a2fe AM |
5060 | // space for branch table |
5061 | total += 4 * (count - 1); | |
5062 | ||
5063 | total += -total & 15; | |
9e390558 | 5064 | total += this->pltresolve_size(); |
cf43a2fe AM |
5065 | } |
5066 | else | |
5067 | { | |
9e390558 | 5068 | total += this->pltresolve_size(); |
cf43a2fe AM |
5069 | |
5070 | // space for branch table | |
b4f7960d AM |
5071 | total += 4 * count; |
5072 | if (this->targ_->abiversion() < 2) | |
5073 | { | |
5074 | total += 4 * count; | |
5075 | if (count > 0x8000) | |
5076 | total += 4 * (count - 0x8000); | |
5077 | } | |
cf43a2fe AM |
5078 | } |
5079 | } | |
9055360d | 5080 | this->end_branch_table_ = total; |
9e390558 | 5081 | total = this->global_entry_align(total); |
9055360d | 5082 | total += this->ge_size_; |
cf43a2fe AM |
5083 | |
5084 | this->set_data_size(total); | |
5085 | } | |
5086 | ||
590b87ff AM |
5087 | // Define symbols on stubs, identifying the stub. |
5088 | ||
5089 | template<int size, bool big_endian> | |
5090 | void | |
5091 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
5092 | { | |
5093 | if (!this->plt_call_stubs_.empty()) | |
5094 | { | |
5095 | // The key for the plt call stub hash table includes addresses, | |
5096 | // therefore traversal order depends on those addresses, which | |
5097 | // can change between runs if gold is a PIE. Unfortunately the | |
5098 | // output .symtab ordering depends on the order in which symbols | |
5099 | // are added to the linker symtab. We want reproducible output | |
5100 | // so must sort the call stub symbols. | |
5101 | typedef typename Plt_stub_entries::const_iterator plt_iter; | |
5102 | std::vector<plt_iter> sorted; | |
5103 | sorted.resize(this->plt_call_stubs_.size()); | |
5104 | ||
5105 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5106 | cs != this->plt_call_stubs_.end(); | |
5107 | ++cs) | |
bdab445c | 5108 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
5109 | |
5110 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
5111 | { | |
5112 | plt_iter cs = sorted[i]; | |
5113 | char add[10]; | |
5114 | add[0] = 0; | |
5115 | if (cs->first.addend_ != 0) | |
5116 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
5117 | char obj[10]; |
5118 | obj[0] = 0; | |
5119 | if (cs->first.object_) | |
590b87ff AM |
5120 | { |
5121 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5122 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
5123 | sprintf(obj, "%x:", ppcobj->uniq()); |
5124 | } | |
5125 | char localname[9]; | |
5126 | const char *symname; | |
5127 | if (cs->first.sym_ == NULL) | |
5128 | { | |
5129 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
5130 | symname = localname; |
5131 | } | |
34e0882b AM |
5132 | else if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
5133 | symname = this->targ_->tls_get_addr_opt()->name(); | |
590b87ff AM |
5134 | else |
5135 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
5136 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
5137 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
5138 | Address value |
5139 | = this->stub_address() - this->address() + cs->second.off_; | |
34e0882b | 5140 | unsigned int stub_size = this->plt_call_align(this->plt_call_size(cs)); |
590b87ff AM |
5141 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5142 | } | |
5143 | } | |
5144 | ||
5145 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5146 | for (branch_iter bs = this->long_branch_stubs_.begin(); | |
5147 | bs != this->long_branch_stubs_.end(); | |
5148 | ++bs) | |
5149 | { | |
5150 | if (bs->first.save_res_) | |
5151 | continue; | |
5152 | ||
5153 | char* name = new char[8 + 13 + 16 + 1]; | |
5154 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
5155 | static_cast<unsigned long long>(bs->first.dest_)); | |
5156 | Address value = (this->stub_address() - this->address() | |
5157 | + this->plt_size_ + bs->second); | |
5158 | unsigned int stub_size = this->branch_stub_size(bs); | |
5159 | this->targ_->define_local(symtab, name, this, value, stub_size); | |
5160 | } | |
5161 | } | |
5162 | ||
ec661b9d | 5163 | // Write out plt and long branch stub code. |
cf43a2fe AM |
5164 | |
5165 | template<int size, bool big_endian> | |
5166 | void | |
ec661b9d | 5167 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 5168 | { |
ec661b9d AM |
5169 | if (this->plt_call_stubs_.empty() |
5170 | && this->long_branch_stubs_.empty()) | |
5171 | return; | |
5172 | ||
5173 | const section_size_type start_off = this->offset(); | |
5174 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 5175 | const section_size_type oview_size = |
ec661b9d | 5176 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 5177 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 5178 | unsigned char* p; |
42cacb20 | 5179 | |
cf43a2fe AM |
5180 | if (size == 64) |
5181 | { | |
ec661b9d AM |
5182 | const Output_data_got_powerpc<size, big_endian>* got |
5183 | = this->targ_->got_section(); | |
dd93cd0a | 5184 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 5185 | |
ec661b9d | 5186 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 5187 | { |
ec661b9d AM |
5188 | // The base address of the .plt section. |
5189 | Address plt_base = this->targ_->plt_section()->address(); | |
5190 | Address iplt_base = invalid_address; | |
5191 | ||
5192 | // Write out plt call stubs. | |
5193 | typename Plt_stub_entries::const_iterator cs; | |
5194 | for (cs = this->plt_call_stubs_.begin(); | |
5195 | cs != this->plt_call_stubs_.end(); | |
5196 | ++cs) | |
e5d5f5ed | 5197 | { |
91c2b899 AM |
5198 | bool is_iplt; |
5199 | Address pltoff = this->plt_off(cs, &is_iplt); | |
9e69ed50 | 5200 | Address plt_addr = pltoff; |
91c2b899 | 5201 | if (is_iplt) |
ec661b9d AM |
5202 | { |
5203 | if (iplt_base == invalid_address) | |
5204 | iplt_base = this->targ_->iplt_section()->address(); | |
5205 | plt_addr += iplt_base; | |
5206 | } | |
5207 | else | |
5208 | plt_addr += plt_base; | |
5209 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5210 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
5211 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 5212 | Address off = plt_addr - got_addr; |
ec661b9d | 5213 | |
9e69ed50 | 5214 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
5215 | gold_error(_("%s: linkage table error against `%s'"), |
5216 | cs->first.object_->name().c_str(), | |
5217 | cs->first.sym_->demangled_name().c_str()); | |
5218 | ||
b4f7960d AM |
5219 | bool plt_load_toc = this->targ_->abiversion() < 2; |
5220 | bool static_chain | |
5221 | = plt_load_toc && parameters->options().plt_static_chain(); | |
5222 | bool thread_safe | |
5223 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
5224 | bool use_fake_dep = false; |
5225 | Address cmp_branch_off = 0; | |
1be5d8d3 AM |
5226 | if (thread_safe |
5227 | && !parameters->options().speculate_indirect_jumps()) | |
5228 | use_fake_dep = true; | |
5229 | else if (thread_safe) | |
9e69ed50 AM |
5230 | { |
5231 | unsigned int pltindex | |
5232 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
5233 | / this->targ_->plt_entry_size()); | |
5234 | Address glinkoff | |
9e390558 | 5235 | = (this->targ_->glink_section()->pltresolve_size() |
9e69ed50 AM |
5236 | + pltindex * 8); |
5237 | if (pltindex > 32768) | |
5238 | glinkoff += (pltindex - 32768) * 4; | |
5239 | Address to | |
5240 | = this->targ_->glink_section()->address() + glinkoff; | |
5241 | Address from | |
7e57d19e AM |
5242 | = (this->stub_address() + cs->second.off_ + 20 |
5243 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
5244 | + 4 * (ha(off) != 0) |
5245 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
5246 | + 4 * static_chain); | |
5247 | cmp_branch_off = to - from; | |
5248 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
5249 | } | |
5250 | ||
bdab445c | 5251 | p = oview + cs->second.off_; |
34e0882b AM |
5252 | const Symbol* gsym = cs->first.sym_; |
5253 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
5254 | { | |
5255 | write_insn<big_endian>(p, ld_11_3 + 0); | |
5256 | p += 4; | |
5257 | write_insn<big_endian>(p, ld_12_3 + 8); | |
5258 | p += 4; | |
5259 | write_insn<big_endian>(p, mr_0_3); | |
5260 | p += 4; | |
5261 | write_insn<big_endian>(p, cmpdi_11_0); | |
5262 | p += 4; | |
5263 | write_insn<big_endian>(p, add_3_12_13); | |
5264 | p += 4; | |
5265 | write_insn<big_endian>(p, beqlr); | |
5266 | p += 4; | |
5267 | write_insn<big_endian>(p, mr_3_0); | |
5268 | p += 4; | |
5269 | if (!cs->second.localentry0_) | |
5270 | { | |
5271 | write_insn<big_endian>(p, mflr_11); | |
5272 | p += 4; | |
5273 | write_insn<big_endian>(p, (std_11_1 | |
5274 | + this->targ_->stk_linker())); | |
5275 | p += 4; | |
5276 | } | |
1be5d8d3 | 5277 | use_fake_dep |= thread_safe; |
34e0882b | 5278 | } |
9e69ed50 | 5279 | if (ha(off) != 0) |
ec661b9d | 5280 | { |
7e57d19e AM |
5281 | if (cs->second.r2save_) |
5282 | { | |
5283 | write_insn<big_endian>(p, | |
5284 | std_2_1 + this->targ_->stk_toc()); | |
5285 | p += 4; | |
5286 | } | |
397998fc AM |
5287 | if (plt_load_toc) |
5288 | { | |
5289 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
5290 | p += 4; | |
5291 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
5292 | p += 4; | |
5293 | } | |
5294 | else | |
5295 | { | |
5296 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
5297 | p += 4; | |
5298 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
5299 | p += 4; | |
5300 | } | |
b4f7960d AM |
5301 | if (plt_load_toc |
5302 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 5303 | { |
b4f7960d AM |
5304 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
5305 | p += 4; | |
9e69ed50 | 5306 | off = 0; |
ec661b9d | 5307 | } |
b4f7960d AM |
5308 | write_insn<big_endian>(p, mtctr_12); |
5309 | p += 4; | |
5310 | if (plt_load_toc) | |
9e69ed50 | 5311 | { |
b4f7960d AM |
5312 | if (use_fake_dep) |
5313 | { | |
5314 | write_insn<big_endian>(p, xor_2_12_12); | |
5315 | p += 4; | |
5316 | write_insn<big_endian>(p, add_11_11_2); | |
5317 | p += 4; | |
5318 | } | |
5319 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
5320 | p += 4; | |
5321 | if (static_chain) | |
5322 | { | |
5323 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
5324 | p += 4; | |
5325 | } | |
9e69ed50 | 5326 | } |
ec661b9d AM |
5327 | } |
5328 | else | |
5329 | { | |
7e57d19e AM |
5330 | if (cs->second.r2save_) |
5331 | { | |
5332 | write_insn<big_endian>(p, | |
5333 | std_2_1 + this->targ_->stk_toc()); | |
5334 | p += 4; | |
5335 | } | |
b4f7960d AM |
5336 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
5337 | p += 4; | |
5338 | if (plt_load_toc | |
5339 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 5340 | { |
b4f7960d AM |
5341 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
5342 | p += 4; | |
9e69ed50 | 5343 | off = 0; |
ec661b9d | 5344 | } |
b4f7960d AM |
5345 | write_insn<big_endian>(p, mtctr_12); |
5346 | p += 4; | |
5347 | if (plt_load_toc) | |
9e69ed50 | 5348 | { |
b4f7960d AM |
5349 | if (use_fake_dep) |
5350 | { | |
5351 | write_insn<big_endian>(p, xor_11_12_12); | |
5352 | p += 4; | |
5353 | write_insn<big_endian>(p, add_2_2_11); | |
5354 | p += 4; | |
5355 | } | |
5356 | if (static_chain) | |
5357 | { | |
5358 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
5359 | p += 4; | |
5360 | } | |
5361 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
5362 | p += 4; | |
9e69ed50 | 5363 | } |
ec661b9d | 5364 | } |
34e0882b AM |
5365 | if (!cs->second.localentry0_ |
5366 | && this->targ_->is_tls_get_addr_opt(gsym)) | |
5367 | { | |
1be5d8d3 AM |
5368 | if (!parameters->options().speculate_indirect_jumps()) |
5369 | { | |
5370 | write_insn<big_endian>(p, crseteq); | |
5371 | p += 4; | |
5372 | write_insn<big_endian>(p, beqctrlm); | |
5373 | } | |
5374 | else | |
5375 | write_insn<big_endian>(p, bctrl); | |
34e0882b AM |
5376 | p += 4; |
5377 | write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); | |
5378 | p += 4; | |
5379 | write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); | |
5380 | p += 4; | |
5381 | write_insn<big_endian>(p, mtlr_11); | |
5382 | p += 4; | |
5383 | write_insn<big_endian>(p, blr); | |
5384 | } | |
5385 | else if (thread_safe && !use_fake_dep) | |
9e69ed50 | 5386 | { |
b4f7960d AM |
5387 | write_insn<big_endian>(p, cmpldi_2_0); |
5388 | p += 4; | |
5389 | write_insn<big_endian>(p, bnectr_p4); | |
5390 | p += 4; | |
9e69ed50 AM |
5391 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
5392 | } | |
5393 | else | |
1be5d8d3 | 5394 | output_bctr<big_endian>(p); |
e5d5f5ed | 5395 | } |
ec661b9d AM |
5396 | } |
5397 | ||
5398 | // Write out long branch stubs. | |
5399 | typename Branch_stub_entries::const_iterator bs; | |
5400 | for (bs = this->long_branch_stubs_.begin(); | |
5401 | bs != this->long_branch_stubs_.end(); | |
5402 | ++bs) | |
5403 | { | |
d49044c7 AM |
5404 | if (bs->first.save_res_) |
5405 | continue; | |
ec661b9d AM |
5406 | p = oview + this->plt_size_ + bs->second; |
5407 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5408 | Address delta = bs->first.dest_ - loc; | |
5409 | if (delta + (1 << 25) < 2 << 25) | |
5410 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 5411 | else |
cf43a2fe | 5412 | { |
ec661b9d AM |
5413 | Address brlt_addr |
5414 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
5415 | gold_assert(brlt_addr != invalid_address); | |
5416 | brlt_addr += this->targ_->brlt_section()->address(); | |
5417 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
5418 | Address brltoff = brlt_addr - got_addr; | |
5419 | if (ha(brltoff) == 0) | |
5420 | { | |
b4f7960d | 5421 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
5422 | } |
5423 | else | |
cf43a2fe | 5424 | { |
397998fc AM |
5425 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
5426 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 5427 | } |
b4f7960d | 5428 | write_insn<big_endian>(p, mtctr_12), p += 4; |
1be5d8d3 | 5429 | output_bctr<big_endian>(p); |
cf43a2fe | 5430 | } |
ec661b9d AM |
5431 | } |
5432 | } | |
5433 | else | |
5434 | { | |
5435 | if (!this->plt_call_stubs_.empty()) | |
5436 | { | |
5437 | // The base address of the .plt section. | |
5438 | Address plt_base = this->targ_->plt_section()->address(); | |
5439 | Address iplt_base = invalid_address; | |
5440 | // The address of _GLOBAL_OFFSET_TABLE_. | |
5441 | Address g_o_t = invalid_address; | |
5442 | ||
5443 | // Write out plt call stubs. | |
5444 | typename Plt_stub_entries::const_iterator cs; | |
5445 | for (cs = this->plt_call_stubs_.begin(); | |
5446 | cs != this->plt_call_stubs_.end(); | |
5447 | ++cs) | |
cf43a2fe | 5448 | { |
91c2b899 AM |
5449 | bool is_iplt; |
5450 | Address plt_addr = this->plt_off(cs, &is_iplt); | |
5451 | if (is_iplt) | |
ec661b9d AM |
5452 | { |
5453 | if (iplt_base == invalid_address) | |
5454 | iplt_base = this->targ_->iplt_section()->address(); | |
5455 | plt_addr += iplt_base; | |
5456 | } | |
5457 | else | |
5458 | plt_addr += plt_base; | |
5459 | ||
bdab445c | 5460 | p = oview + cs->second.off_; |
34e0882b AM |
5461 | const Symbol* gsym = cs->first.sym_; |
5462 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
5463 | { | |
5464 | write_insn<big_endian>(p, lwz_11_3 + 0); | |
5465 | p += 4; | |
5466 | write_insn<big_endian>(p, lwz_12_3 + 4); | |
5467 | p += 4; | |
5468 | write_insn<big_endian>(p, mr_0_3); | |
5469 | p += 4; | |
5470 | write_insn<big_endian>(p, cmpwi_11_0); | |
5471 | p += 4; | |
5472 | write_insn<big_endian>(p, add_3_12_2); | |
5473 | p += 4; | |
5474 | write_insn<big_endian>(p, beqlr); | |
5475 | p += 4; | |
5476 | write_insn<big_endian>(p, mr_3_0); | |
5477 | p += 4; | |
5478 | write_insn<big_endian>(p, nop); | |
5479 | p += 4; | |
5480 | } | |
ec661b9d AM |
5481 | if (parameters->options().output_is_position_independent()) |
5482 | { | |
5483 | Address got_addr; | |
5484 | const Powerpc_relobj<size, big_endian>* ppcobj | |
5485 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
5486 | (cs->first.object_)); | |
5487 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
5488 | { | |
5489 | unsigned int got2 = ppcobj->got2_shndx(); | |
5490 | got_addr = ppcobj->get_output_section_offset(got2); | |
5491 | gold_assert(got_addr != invalid_address); | |
5492 | got_addr += (ppcobj->output_section(got2)->address() | |
5493 | + cs->first.addend_); | |
5494 | } | |
5495 | else | |
5496 | { | |
5497 | if (g_o_t == invalid_address) | |
5498 | { | |
5499 | const Output_data_got_powerpc<size, big_endian>* got | |
5500 | = this->targ_->got_section(); | |
5501 | g_o_t = got->address() + got->g_o_t(); | |
5502 | } | |
5503 | got_addr = g_o_t; | |
5504 | } | |
5505 | ||
9e69ed50 AM |
5506 | Address off = plt_addr - got_addr; |
5507 | if (ha(off) == 0) | |
9e390558 | 5508 | write_insn<big_endian>(p, lwz_11_30 + l(off)); |
ec661b9d AM |
5509 | else |
5510 | { | |
9e390558 AM |
5511 | write_insn<big_endian>(p, addis_11_30 + ha(off)); |
5512 | p += 4; | |
5513 | write_insn<big_endian>(p, lwz_11_11 + l(off)); | |
ec661b9d AM |
5514 | } |
5515 | } | |
5516 | else | |
5517 | { | |
9e390558 AM |
5518 | write_insn<big_endian>(p, lis_11 + ha(plt_addr)); |
5519 | p += 4; | |
5520 | write_insn<big_endian>(p, lwz_11_11 + l(plt_addr)); | |
ec661b9d | 5521 | } |
9e390558 AM |
5522 | p += 4; |
5523 | write_insn<big_endian>(p, mtctr_11); | |
5524 | p += 4; | |
1be5d8d3 | 5525 | output_bctr<big_endian>(p); |
ec661b9d AM |
5526 | } |
5527 | } | |
5528 | ||
5529 | // Write out long branch stubs. | |
5530 | typename Branch_stub_entries::const_iterator bs; | |
5531 | for (bs = this->long_branch_stubs_.begin(); | |
5532 | bs != this->long_branch_stubs_.end(); | |
5533 | ++bs) | |
5534 | { | |
d49044c7 AM |
5535 | if (bs->first.save_res_) |
5536 | continue; | |
ec661b9d AM |
5537 | p = oview + this->plt_size_ + bs->second; |
5538 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
5539 | Address delta = bs->first.dest_ - loc; | |
5540 | if (delta + (1 << 25) < 2 << 25) | |
5541 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
5542 | else if (!parameters->options().output_is_position_independent()) | |
5543 | { | |
9e390558 AM |
5544 | write_insn<big_endian>(p, lis_12 + ha(bs->first.dest_)); |
5545 | p += 4; | |
5546 | write_insn<big_endian>(p, addi_12_12 + l(bs->first.dest_)); | |
ec661b9d AM |
5547 | } |
5548 | else | |
5549 | { | |
5550 | delta -= 8; | |
9e390558 AM |
5551 | write_insn<big_endian>(p, mflr_0); |
5552 | p += 4; | |
5553 | write_insn<big_endian>(p, bcl_20_31); | |
5554 | p += 4; | |
5555 | write_insn<big_endian>(p, mflr_12); | |
5556 | p += 4; | |
5557 | write_insn<big_endian>(p, addis_12_12 + ha(delta)); | |
5558 | p += 4; | |
5559 | write_insn<big_endian>(p, addi_12_12 + l(delta)); | |
5560 | p += 4; | |
5561 | write_insn<big_endian>(p, mtlr_0); | |
cf43a2fe | 5562 | } |
9e390558 AM |
5563 | p += 4; |
5564 | write_insn<big_endian>(p, mtctr_12); | |
5565 | p += 4; | |
1be5d8d3 | 5566 | output_bctr<big_endian>(p); |
cf43a2fe | 5567 | } |
ec661b9d | 5568 | } |
d49044c7 AM |
5569 | if (this->need_save_res_) |
5570 | { | |
5571 | p = oview + this->plt_size_ + this->branch_size_; | |
5572 | memcpy (p, this->targ_->savres_section()->contents(), | |
5573 | this->targ_->savres_section()->data_size()); | |
5574 | } | |
ec661b9d AM |
5575 | } |
5576 | ||
5577 | // Write out .glink. | |
5578 | ||
5579 | template<int size, bool big_endian> | |
5580 | void | |
5581 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
5582 | { | |
5583 | const section_size_type off = this->offset(); | |
5584 | const section_size_type oview_size = | |
5585 | convert_to_section_size_type(this->data_size()); | |
5586 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5587 | unsigned char* p; | |
5588 | ||
5589 | // The base address of the .plt section. | |
5590 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
5591 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 5592 | |
ec661b9d AM |
5593 | if (size == 64) |
5594 | { | |
9055360d | 5595 | if (this->end_branch_table_ != 0) |
b4f7960d | 5596 | { |
9055360d AM |
5597 | // Write pltresolve stub. |
5598 | p = oview; | |
5599 | Address after_bcl = this->address() + 16; | |
5600 | Address pltoff = plt_base - after_bcl; | |
5601 | ||
5602 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 5603 | |
b4f7960d | 5604 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 5605 | { |
9055360d AM |
5606 | write_insn<big_endian>(p, mflr_12), p += 4; |
5607 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5608 | write_insn<big_endian>(p, mflr_11), p += 4; | |
5609 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
5610 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
5611 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5612 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5613 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
5614 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5615 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
5616 | } | |
5617 | else | |
5618 | { | |
5619 | write_insn<big_endian>(p, mflr_0), p += 4; | |
5620 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
5621 | write_insn<big_endian>(p, mflr_11), p += 4; | |
7ee7ff70 | 5622 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; |
9055360d AM |
5623 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; |
5624 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
5625 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
5626 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
5627 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
5628 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
5629 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
5630 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
5631 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
5632 | } | |
1be5d8d3 | 5633 | p = output_bctr<big_endian>(p); |
9e390558 | 5634 | gold_assert(p == oview + this->pltresolve_size()); |
9055360d AM |
5635 | |
5636 | // Write lazy link call stubs. | |
5637 | uint32_t indx = 0; | |
5638 | while (p < oview + this->end_branch_table_) | |
5639 | { | |
5640 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 5641 | { |
9055360d AM |
5642 | if (indx < 0x8000) |
5643 | { | |
5644 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
5645 | } | |
5646 | else | |
5647 | { | |
bbec1a5d | 5648 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
5649 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
5650 | } | |
b4f7960d | 5651 | } |
9055360d AM |
5652 | uint32_t branch_off = 8 - (p - oview); |
5653 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
5654 | indx++; | |
cf43a2fe | 5655 | } |
9055360d AM |
5656 | } |
5657 | ||
5658 | Address plt_base = this->targ_->plt_section()->address(); | |
5659 | Address iplt_base = invalid_address; | |
9e390558 | 5660 | unsigned int global_entry_off = this->global_entry_off(); |
9055360d AM |
5661 | Address global_entry_base = this->address() + global_entry_off; |
5662 | typename Global_entry_stub_entries::const_iterator ge; | |
5663 | for (ge = this->global_entry_stubs_.begin(); | |
5664 | ge != this->global_entry_stubs_.end(); | |
5665 | ++ge) | |
5666 | { | |
5667 | p = oview + global_entry_off + ge->second; | |
5668 | Address plt_addr = ge->first->plt_offset(); | |
5669 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
5670 | && ge->first->can_use_relative_reloc(false)) | |
5671 | { | |
5672 | if (iplt_base == invalid_address) | |
5673 | iplt_base = this->targ_->iplt_section()->address(); | |
5674 | plt_addr += iplt_base; | |
5675 | } | |
5676 | else | |
5677 | plt_addr += plt_base; | |
5678 | Address my_addr = global_entry_base + ge->second; | |
5679 | Address off = plt_addr - my_addr; | |
5680 | ||
5681 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
5682 | gold_error(_("%s: linkage table error against `%s'"), | |
5683 | ge->first->object()->name().c_str(), | |
5684 | ge->first->demangled_name().c_str()); | |
5685 | ||
5686 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
5687 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
5688 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
1be5d8d3 | 5689 | output_bctr<big_endian>(p); |
cf43a2fe AM |
5690 | } |
5691 | } | |
5692 | else | |
5693 | { | |
ec661b9d AM |
5694 | const Output_data_got_powerpc<size, big_endian>* got |
5695 | = this->targ_->got_section(); | |
dd93cd0a AM |
5696 | // The address of _GLOBAL_OFFSET_TABLE_. |
5697 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 5698 | |
cf43a2fe | 5699 | // Write out pltresolve branch table. |
ec661b9d | 5700 | p = oview; |
9e390558 | 5701 | unsigned int the_end = oview_size - this->pltresolve_size(); |
c9269dff | 5702 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
5703 | while (p < end_p - 8 * 4) |
5704 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
5705 | while (p < end_p) | |
5706 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 5707 | |
cf43a2fe | 5708 | // Write out pltresolve call stub. |
9e390558 | 5709 | end_p = oview + oview_size; |
cf43a2fe | 5710 | if (parameters->options().output_is_position_independent()) |
42cacb20 | 5711 | { |
ec661b9d | 5712 | Address res0_off = 0; |
dd93cd0a AM |
5713 | Address after_bcl_off = the_end + 12; |
5714 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe | 5715 | |
9e390558 AM |
5716 | write_insn<big_endian>(p, addis_11_11 + ha(bcl_res0)); |
5717 | p += 4; | |
5718 | write_insn<big_endian>(p, mflr_0); | |
5719 | p += 4; | |
5720 | write_insn<big_endian>(p, bcl_20_31); | |
5721 | p += 4; | |
5722 | write_insn<big_endian>(p, addi_11_11 + l(bcl_res0)); | |
5723 | p += 4; | |
5724 | write_insn<big_endian>(p, mflr_12); | |
5725 | p += 4; | |
5726 | write_insn<big_endian>(p, mtlr_0); | |
5727 | p += 4; | |
5728 | write_insn<big_endian>(p, sub_11_11_12); | |
5729 | p += 4; | |
cf43a2fe | 5730 | |
dd93cd0a | 5731 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe | 5732 | |
9e390558 AM |
5733 | write_insn<big_endian>(p, addis_12_12 + ha(got_bcl)); |
5734 | p += 4; | |
cf43a2fe AM |
5735 | if (ha(got_bcl) == ha(got_bcl + 4)) |
5736 | { | |
9e390558 AM |
5737 | write_insn<big_endian>(p, lwz_0_12 + l(got_bcl)); |
5738 | p += 4; | |
5739 | write_insn<big_endian>(p, lwz_12_12 + l(got_bcl + 4)); | |
cf43a2fe AM |
5740 | } |
5741 | else | |
5742 | { | |
9e390558 AM |
5743 | write_insn<big_endian>(p, lwzu_0_12 + l(got_bcl)); |
5744 | p += 4; | |
5745 | write_insn<big_endian>(p, lwz_12_12 + 4); | |
cf43a2fe | 5746 | } |
9e390558 AM |
5747 | p += 4; |
5748 | write_insn<big_endian>(p, mtctr_0); | |
5749 | p += 4; | |
5750 | write_insn<big_endian>(p, add_0_11_11); | |
5751 | p += 4; | |
5752 | write_insn<big_endian>(p, add_11_0_11); | |
42cacb20 | 5753 | } |
cf43a2fe | 5754 | else |
42cacb20 | 5755 | { |
ec661b9d | 5756 | Address res0 = this->address(); |
cf43a2fe | 5757 | |
9e390558 AM |
5758 | write_insn<big_endian>(p, lis_12 + ha(g_o_t + 4)); |
5759 | p += 4; | |
5760 | write_insn<big_endian>(p, addis_11_11 + ha(-res0)); | |
5761 | p += 4; | |
cf43a2fe | 5762 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 5763 | write_insn<big_endian>(p, lwz_0_12 + l(g_o_t + 4)); |
cf43a2fe | 5764 | else |
9e390558 AM |
5765 | write_insn<big_endian>(p, lwzu_0_12 + l(g_o_t + 4)); |
5766 | p += 4; | |
5767 | write_insn<big_endian>(p, addi_11_11 + l(-res0)); | |
5768 | p += 4; | |
5769 | write_insn<big_endian>(p, mtctr_0); | |
5770 | p += 4; | |
5771 | write_insn<big_endian>(p, add_0_11_11); | |
5772 | p += 4; | |
cf43a2fe | 5773 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 5774 | write_insn<big_endian>(p, lwz_12_12 + l(g_o_t + 8)); |
cf43a2fe | 5775 | else |
9e390558 AM |
5776 | write_insn<big_endian>(p, lwz_12_12 + 4); |
5777 | p += 4; | |
5778 | write_insn<big_endian>(p, add_11_0_11); | |
5779 | } | |
5780 | p += 4; | |
1be5d8d3 | 5781 | p = output_bctr<big_endian>(p); |
9e390558 AM |
5782 | while (p < end_p) |
5783 | { | |
5784 | write_insn<big_endian>(p, nop); | |
5785 | p += 4; | |
42cacb20 DE |
5786 | } |
5787 | } | |
5788 | ||
cf43a2fe AM |
5789 | of->write_output_view(off, oview_size, oview); |
5790 | } | |
5791 | ||
f3a0ed29 AM |
5792 | |
5793 | // A class to handle linker generated save/restore functions. | |
5794 | ||
5795 | template<int size, bool big_endian> | |
5796 | class Output_data_save_res : public Output_section_data_build | |
5797 | { | |
5798 | public: | |
5799 | Output_data_save_res(Symbol_table* symtab); | |
5800 | ||
d49044c7 AM |
5801 | const unsigned char* |
5802 | contents() const | |
5803 | { | |
5804 | return contents_; | |
5805 | } | |
5806 | ||
f3a0ed29 AM |
5807 | protected: |
5808 | // Write to a map file. | |
5809 | void | |
5810 | do_print_to_mapfile(Mapfile* mapfile) const | |
5811 | { mapfile->print_output_data(this, _("** save/restore")); } | |
5812 | ||
5813 | void | |
5814 | do_write(Output_file*); | |
5815 | ||
5816 | private: | |
5817 | // The maximum size of save/restore contents. | |
5818 | static const unsigned int savres_max = 218*4; | |
5819 | ||
5820 | void | |
5821 | savres_define(Symbol_table* symtab, | |
5822 | const char *name, | |
5823 | unsigned int lo, unsigned int hi, | |
5824 | unsigned char* write_ent(unsigned char*, int), | |
5825 | unsigned char* write_tail(unsigned char*, int)); | |
5826 | ||
5827 | unsigned char *contents_; | |
5828 | }; | |
5829 | ||
5830 | template<bool big_endian> | |
5831 | static unsigned char* | |
5832 | savegpr0(unsigned char* p, int r) | |
5833 | { | |
5834 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5835 | write_insn<big_endian>(p, insn); | |
5836 | return p + 4; | |
5837 | } | |
5838 | ||
5839 | template<bool big_endian> | |
5840 | static unsigned char* | |
5841 | savegpr0_tail(unsigned char* p, int r) | |
5842 | { | |
5843 | p = savegpr0<big_endian>(p, r); | |
5844 | uint32_t insn = std_0_1 + 16; | |
5845 | write_insn<big_endian>(p, insn); | |
5846 | p = p + 4; | |
5847 | write_insn<big_endian>(p, blr); | |
5848 | return p + 4; | |
5849 | } | |
5850 | ||
5851 | template<bool big_endian> | |
62fe925a | 5852 | static unsigned char* |
f3a0ed29 AM |
5853 | restgpr0(unsigned char* p, int r) |
5854 | { | |
5855 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5856 | write_insn<big_endian>(p, insn); | |
5857 | return p + 4; | |
5858 | } | |
5859 | ||
5860 | template<bool big_endian> | |
62fe925a | 5861 | static unsigned char* |
f3a0ed29 AM |
5862 | restgpr0_tail(unsigned char* p, int r) |
5863 | { | |
5864 | uint32_t insn = ld_0_1 + 16; | |
5865 | write_insn<big_endian>(p, insn); | |
5866 | p = p + 4; | |
5867 | p = restgpr0<big_endian>(p, r); | |
5868 | write_insn<big_endian>(p, mtlr_0); | |
5869 | p = p + 4; | |
5870 | if (r == 29) | |
5871 | { | |
5872 | p = restgpr0<big_endian>(p, 30); | |
5873 | p = restgpr0<big_endian>(p, 31); | |
5874 | } | |
5875 | write_insn<big_endian>(p, blr); | |
5876 | return p + 4; | |
5877 | } | |
5878 | ||
5879 | template<bool big_endian> | |
62fe925a | 5880 | static unsigned char* |
f3a0ed29 AM |
5881 | savegpr1(unsigned char* p, int r) |
5882 | { | |
5883 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5884 | write_insn<big_endian>(p, insn); | |
5885 | return p + 4; | |
5886 | } | |
5887 | ||
5888 | template<bool big_endian> | |
62fe925a | 5889 | static unsigned char* |
f3a0ed29 AM |
5890 | savegpr1_tail(unsigned char* p, int r) |
5891 | { | |
5892 | p = savegpr1<big_endian>(p, r); | |
5893 | write_insn<big_endian>(p, blr); | |
5894 | return p + 4; | |
5895 | } | |
5896 | ||
5897 | template<bool big_endian> | |
62fe925a | 5898 | static unsigned char* |
f3a0ed29 AM |
5899 | restgpr1(unsigned char* p, int r) |
5900 | { | |
5901 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5902 | write_insn<big_endian>(p, insn); | |
5903 | return p + 4; | |
5904 | } | |
5905 | ||
5906 | template<bool big_endian> | |
62fe925a | 5907 | static unsigned char* |
f3a0ed29 AM |
5908 | restgpr1_tail(unsigned char* p, int r) |
5909 | { | |
5910 | p = restgpr1<big_endian>(p, r); | |
5911 | write_insn<big_endian>(p, blr); | |
5912 | return p + 4; | |
5913 | } | |
5914 | ||
5915 | template<bool big_endian> | |
62fe925a | 5916 | static unsigned char* |
f3a0ed29 AM |
5917 | savefpr(unsigned char* p, int r) |
5918 | { | |
5919 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5920 | write_insn<big_endian>(p, insn); | |
5921 | return p + 4; | |
5922 | } | |
5923 | ||
5924 | template<bool big_endian> | |
62fe925a | 5925 | static unsigned char* |
f3a0ed29 AM |
5926 | savefpr0_tail(unsigned char* p, int r) |
5927 | { | |
5928 | p = savefpr<big_endian>(p, r); | |
5929 | write_insn<big_endian>(p, std_0_1 + 16); | |
5930 | p = p + 4; | |
5931 | write_insn<big_endian>(p, blr); | |
5932 | return p + 4; | |
5933 | } | |
5934 | ||
5935 | template<bool big_endian> | |
62fe925a | 5936 | static unsigned char* |
f3a0ed29 AM |
5937 | restfpr(unsigned char* p, int r) |
5938 | { | |
5939 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5940 | write_insn<big_endian>(p, insn); | |
5941 | return p + 4; | |
5942 | } | |
5943 | ||
5944 | template<bool big_endian> | |
62fe925a | 5945 | static unsigned char* |
f3a0ed29 AM |
5946 | restfpr0_tail(unsigned char* p, int r) |
5947 | { | |
5948 | write_insn<big_endian>(p, ld_0_1 + 16); | |
5949 | p = p + 4; | |
5950 | p = restfpr<big_endian>(p, r); | |
5951 | write_insn<big_endian>(p, mtlr_0); | |
5952 | p = p + 4; | |
5953 | if (r == 29) | |
5954 | { | |
5955 | p = restfpr<big_endian>(p, 30); | |
5956 | p = restfpr<big_endian>(p, 31); | |
5957 | } | |
5958 | write_insn<big_endian>(p, blr); | |
5959 | return p + 4; | |
5960 | } | |
5961 | ||
5962 | template<bool big_endian> | |
62fe925a | 5963 | static unsigned char* |
f3a0ed29 AM |
5964 | savefpr1_tail(unsigned char* p, int r) |
5965 | { | |
5966 | p = savefpr<big_endian>(p, r); | |
5967 | write_insn<big_endian>(p, blr); | |
5968 | return p + 4; | |
5969 | } | |
5970 | ||
5971 | template<bool big_endian> | |
62fe925a | 5972 | static unsigned char* |
f3a0ed29 AM |
5973 | restfpr1_tail(unsigned char* p, int r) |
5974 | { | |
5975 | p = restfpr<big_endian>(p, r); | |
5976 | write_insn<big_endian>(p, blr); | |
5977 | return p + 4; | |
5978 | } | |
5979 | ||
5980 | template<bool big_endian> | |
62fe925a | 5981 | static unsigned char* |
f3a0ed29 AM |
5982 | savevr(unsigned char* p, int r) |
5983 | { | |
5984 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5985 | write_insn<big_endian>(p, insn); | |
5986 | p = p + 4; | |
5987 | insn = stvx_0_12_0 + (r << 21); | |
5988 | write_insn<big_endian>(p, insn); | |
5989 | return p + 4; | |
5990 | } | |
5991 | ||
5992 | template<bool big_endian> | |
62fe925a | 5993 | static unsigned char* |
f3a0ed29 AM |
5994 | savevr_tail(unsigned char* p, int r) |
5995 | { | |
5996 | p = savevr<big_endian>(p, r); | |
5997 | write_insn<big_endian>(p, blr); | |
5998 | return p + 4; | |
5999 | } | |
6000 | ||
6001 | template<bool big_endian> | |
62fe925a | 6002 | static unsigned char* |
f3a0ed29 AM |
6003 | restvr(unsigned char* p, int r) |
6004 | { | |
6005 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
6006 | write_insn<big_endian>(p, insn); | |
6007 | p = p + 4; | |
6008 | insn = lvx_0_12_0 + (r << 21); | |
6009 | write_insn<big_endian>(p, insn); | |
6010 | return p + 4; | |
6011 | } | |
6012 | ||
6013 | template<bool big_endian> | |
62fe925a | 6014 | static unsigned char* |
f3a0ed29 AM |
6015 | restvr_tail(unsigned char* p, int r) |
6016 | { | |
6017 | p = restvr<big_endian>(p, r); | |
6018 | write_insn<big_endian>(p, blr); | |
6019 | return p + 4; | |
6020 | } | |
6021 | ||
6022 | ||
6023 | template<int size, bool big_endian> | |
6024 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
6025 | Symbol_table* symtab) | |
6026 | : Output_section_data_build(4), | |
6027 | contents_(NULL) | |
6028 | { | |
6029 | this->savres_define(symtab, | |
6030 | "_savegpr0_", 14, 31, | |
6031 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
6032 | this->savres_define(symtab, | |
6033 | "_restgpr0_", 14, 29, | |
6034 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6035 | this->savres_define(symtab, | |
6036 | "_restgpr0_", 30, 31, | |
6037 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6038 | this->savres_define(symtab, | |
6039 | "_savegpr1_", 14, 31, | |
6040 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
6041 | this->savres_define(symtab, | |
6042 | "_restgpr1_", 14, 31, | |
6043 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
6044 | this->savres_define(symtab, | |
6045 | "_savefpr_", 14, 31, | |
6046 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
6047 | this->savres_define(symtab, | |
6048 | "_restfpr_", 14, 29, | |
6049 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6050 | this->savres_define(symtab, | |
6051 | "_restfpr_", 30, 31, | |
6052 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6053 | this->savres_define(symtab, | |
6054 | "._savef", 14, 31, | |
6055 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
6056 | this->savres_define(symtab, | |
6057 | "._restf", 14, 31, | |
6058 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
6059 | this->savres_define(symtab, | |
6060 | "_savevr_", 20, 31, | |
6061 | savevr<big_endian>, savevr_tail<big_endian>); | |
6062 | this->savres_define(symtab, | |
6063 | "_restvr_", 20, 31, | |
6064 | restvr<big_endian>, restvr_tail<big_endian>); | |
6065 | } | |
6066 | ||
6067 | template<int size, bool big_endian> | |
6068 | void | |
6069 | Output_data_save_res<size, big_endian>::savres_define( | |
6070 | Symbol_table* symtab, | |
6071 | const char *name, | |
6072 | unsigned int lo, unsigned int hi, | |
6073 | unsigned char* write_ent(unsigned char*, int), | |
6074 | unsigned char* write_tail(unsigned char*, int)) | |
6075 | { | |
6076 | size_t len = strlen(name); | |
6077 | bool writing = false; | |
6078 | char sym[16]; | |
6079 | ||
6080 | memcpy(sym, name, len); | |
6081 | sym[len + 2] = 0; | |
6082 | ||
6083 | for (unsigned int i = lo; i <= hi; i++) | |
6084 | { | |
6085 | sym[len + 0] = i / 10 + '0'; | |
6086 | sym[len + 1] = i % 10 + '0'; | |
6087 | Symbol* gsym = symtab->lookup(sym); | |
6088 | bool refd = gsym != NULL && gsym->is_undefined(); | |
6089 | writing = writing || refd; | |
6090 | if (writing) | |
6091 | { | |
6092 | if (this->contents_ == NULL) | |
6093 | this->contents_ = new unsigned char[this->savres_max]; | |
6094 | ||
ec661b9d | 6095 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
6096 | unsigned char* p = this->contents_ + value; |
6097 | if (i != hi) | |
6098 | p = write_ent(p, i); | |
6099 | else | |
6100 | p = write_tail(p, i); | |
ec661b9d | 6101 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
6102 | this->set_current_data_size(cur_size); |
6103 | if (refd) | |
6104 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
6105 | this, value, cur_size - value, | |
6106 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
6107 | elfcpp::STV_HIDDEN, 0, false, false); | |
6108 | } | |
6109 | } | |
6110 | } | |
6111 | ||
6112 | // Write out save/restore. | |
6113 | ||
6114 | template<int size, bool big_endian> | |
6115 | void | |
6116 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
6117 | { | |
ec661b9d | 6118 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
6119 | const section_size_type oview_size = |
6120 | convert_to_section_size_type(this->data_size()); | |
6121 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
6122 | memcpy(oview, this->contents_, oview_size); | |
6123 | of->write_output_view(off, oview_size, oview); | |
6124 | } | |
6125 | ||
6126 | ||
cf43a2fe | 6127 | // Create the glink section. |
42cacb20 | 6128 | |
cf43a2fe AM |
6129 | template<int size, bool big_endian> |
6130 | void | |
6131 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
6132 | { | |
6133 | if (this->glink_ == NULL) | |
6134 | { | |
6135 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 6136 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
6137 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
6138 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
6139 | this->glink_, ORDER_TEXT, false); | |
6140 | } | |
42cacb20 DE |
6141 | } |
6142 | ||
6143 | // Create a PLT entry for a global symbol. | |
6144 | ||
6145 | template<int size, bool big_endian> | |
6146 | void | |
ec661b9d AM |
6147 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
6148 | Layout* layout, | |
6149 | Symbol* gsym) | |
42cacb20 | 6150 | { |
e5d5f5ed AM |
6151 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
6152 | && gsym->can_use_relative_reloc(false)) | |
6153 | { | |
6154 | if (this->iplt_ == NULL) | |
40b469d7 | 6155 | this->make_iplt_section(symtab, layout); |
03e25981 | 6156 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
6157 | } |
6158 | else | |
6159 | { | |
6160 | if (this->plt_ == NULL) | |
40b469d7 | 6161 | this->make_plt_section(symtab, layout); |
03e25981 | 6162 | this->plt_->add_entry(gsym); |
e5d5f5ed | 6163 | } |
e5d5f5ed | 6164 | } |
42cacb20 | 6165 | |
e5d5f5ed | 6166 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 6167 | |
e5d5f5ed AM |
6168 | template<int size, bool big_endian> |
6169 | void | |
6170 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 6171 | Symbol_table* symtab, |
e5d5f5ed | 6172 | Layout* layout, |
ec661b9d AM |
6173 | Sized_relobj_file<size, big_endian>* relobj, |
6174 | unsigned int r_sym) | |
e5d5f5ed AM |
6175 | { |
6176 | if (this->iplt_ == NULL) | |
40b469d7 | 6177 | this->make_iplt_section(symtab, layout); |
03e25981 | 6178 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
6179 | } |
6180 | ||
0e70b911 CC |
6181 | // Return the number of entries in the PLT. |
6182 | ||
6183 | template<int size, bool big_endian> | |
6184 | unsigned int | |
6185 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
6186 | { | |
6187 | if (this->plt_ == NULL) | |
6188 | return 0; | |
b3ccdeb5 | 6189 | return this->plt_->entry_count(); |
0e70b911 CC |
6190 | } |
6191 | ||
dd93cd0a | 6192 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
6193 | |
6194 | template<int size, bool big_endian> | |
6195 | unsigned int | |
dd93cd0a | 6196 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
6197 | Symbol_table* symtab, |
6198 | Layout* layout, | |
6199 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 6200 | { |
dd93cd0a | 6201 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
6202 | { |
6203 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
6204 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
6205 | Output_data_got_powerpc<size, big_endian>* got |
6206 | = this->got_section(symtab, layout); | |
6207 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
6208 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
6209 | got_offset, 0); | |
dd93cd0a | 6210 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 6211 | } |
dd93cd0a | 6212 | return this->tlsld_got_offset_; |
42cacb20 DE |
6213 | } |
6214 | ||
95a2c8d6 RS |
6215 | // Get the Reference_flags for a particular relocation. |
6216 | ||
6217 | template<int size, bool big_endian> | |
6218 | int | |
88b8e639 AM |
6219 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
6220 | unsigned int r_type, | |
6221 | const Target_powerpc* target) | |
95a2c8d6 | 6222 | { |
88b8e639 AM |
6223 | int ref = 0; |
6224 | ||
95a2c8d6 RS |
6225 | switch (r_type) |
6226 | { | |
6227 | case elfcpp::R_POWERPC_NONE: | |
6228 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6229 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6230 | case elfcpp::R_PPC64_TOC: | |
6231 | // No symbol reference. | |
88b8e639 | 6232 | break; |
95a2c8d6 | 6233 | |
dd93cd0a AM |
6234 | case elfcpp::R_PPC64_ADDR64: |
6235 | case elfcpp::R_PPC64_UADDR64: | |
6236 | case elfcpp::R_POWERPC_ADDR32: | |
6237 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 6238 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 6239 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
6240 | case elfcpp::R_POWERPC_ADDR16_LO: |
6241 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6242 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
6243 | ref = Symbol::ABSOLUTE_REF; |
6244 | break; | |
95a2c8d6 | 6245 | |
dd93cd0a AM |
6246 | case elfcpp::R_POWERPC_ADDR24: |
6247 | case elfcpp::R_POWERPC_ADDR14: | |
6248 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6249 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
6250 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
6251 | break; | |
dd93cd0a | 6252 | |
e5d5f5ed | 6253 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6254 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 6255 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
6256 | case elfcpp::R_POWERPC_REL16: |
6257 | case elfcpp::R_POWERPC_REL16_LO: | |
6258 | case elfcpp::R_POWERPC_REL16_HI: | |
6259 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
6260 | ref = Symbol::RELATIVE_REF; |
6261 | break; | |
95a2c8d6 | 6262 | |
dd93cd0a | 6263 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 6264 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
6265 | case elfcpp::R_POWERPC_REL14: |
6266 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6267 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
6268 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
6269 | break; | |
95a2c8d6 RS |
6270 | |
6271 | case elfcpp::R_POWERPC_GOT16: | |
6272 | case elfcpp::R_POWERPC_GOT16_LO: | |
6273 | case elfcpp::R_POWERPC_GOT16_HI: | |
6274 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
6275 | case elfcpp::R_PPC64_GOT16_DS: |
6276 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
6277 | case elfcpp::R_PPC64_TOC16: |
6278 | case elfcpp::R_PPC64_TOC16_LO: | |
6279 | case elfcpp::R_PPC64_TOC16_HI: | |
6280 | case elfcpp::R_PPC64_TOC16_HA: | |
6281 | case elfcpp::R_PPC64_TOC16_DS: | |
6282 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
32d849b3 | 6283 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 6284 | break; |
95a2c8d6 RS |
6285 | |
6286 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6287 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
6288 | ref = Symbol::TLS_REF; |
6289 | break; | |
95a2c8d6 RS |
6290 | |
6291 | case elfcpp::R_POWERPC_COPY: | |
6292 | case elfcpp::R_POWERPC_GLOB_DAT: | |
6293 | case elfcpp::R_POWERPC_JMP_SLOT: | |
6294 | case elfcpp::R_POWERPC_RELATIVE: | |
6295 | case elfcpp::R_POWERPC_DTPMOD: | |
6296 | default: | |
6297 | // Not expected. We will give an error later. | |
88b8e639 | 6298 | break; |
95a2c8d6 | 6299 | } |
88b8e639 AM |
6300 | |
6301 | if (size == 64 && target->abiversion() < 2) | |
6302 | ref |= Symbol::FUNC_DESC_ABI; | |
6303 | return ref; | |
95a2c8d6 RS |
6304 | } |
6305 | ||
42cacb20 DE |
6306 | // Report an unsupported relocation against a local symbol. |
6307 | ||
6308 | template<int size, bool big_endian> | |
6309 | void | |
6310 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
6311 | Sized_relobj_file<size, big_endian>* object, |
6312 | unsigned int r_type) | |
42cacb20 DE |
6313 | { |
6314 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
6315 | object->name().c_str(), r_type); | |
6316 | } | |
6317 | ||
6318 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
6319 | // dynamic linker does not support it, issue an error. | |
6320 | ||
6321 | template<int size, bool big_endian> | |
6322 | void | |
6323 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
6324 | unsigned int r_type) | |
6325 | { | |
6326 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
6327 | ||
6328 | // These are the relocation types supported by glibc for both 32-bit | |
6329 | // and 64-bit powerpc. | |
6330 | switch (r_type) | |
6331 | { | |
3ea0a085 | 6332 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
6333 | case elfcpp::R_POWERPC_RELATIVE: |
6334 | case elfcpp::R_POWERPC_GLOB_DAT: | |
6335 | case elfcpp::R_POWERPC_DTPMOD: | |
6336 | case elfcpp::R_POWERPC_DTPREL: | |
6337 | case elfcpp::R_POWERPC_TPREL: | |
6338 | case elfcpp::R_POWERPC_JMP_SLOT: | |
6339 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 6340 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 6341 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 6342 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 6343 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
6344 | case elfcpp::R_POWERPC_ADDR16: |
6345 | case elfcpp::R_POWERPC_UADDR16: | |
6346 | case elfcpp::R_POWERPC_ADDR16_LO: | |
6347 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6348 | case elfcpp::R_POWERPC_ADDR16_HA: | |
6349 | case elfcpp::R_POWERPC_ADDR14: | |
6350 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6351 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
6352 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 6353 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
6354 | case elfcpp::R_POWERPC_TPREL16: |
6355 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6356 | case elfcpp::R_POWERPC_TPREL16_HI: | |
6357 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
6358 | return; |
6359 | ||
6360 | default: | |
6361 | break; | |
6362 | } | |
6363 | ||
6364 | if (size == 64) | |
6365 | { | |
6366 | switch (r_type) | |
6367 | { | |
6368 | // These are the relocation types supported only on 64-bit. | |
6369 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 6370 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 6371 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 6372 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 6373 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
6374 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6375 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
6376 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6377 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6378 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6379 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 6380 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
6381 | case elfcpp::R_POWERPC_ADDR30: |
6382 | case elfcpp::R_PPC64_TPREL16_DS: | |
6383 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6384 | case elfcpp::R_PPC64_TPREL16_HIGH: |
6385 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
6386 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
6387 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
6388 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
6389 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
6390 | return; |
6391 | ||
6392 | default: | |
6393 | break; | |
6394 | } | |
6395 | } | |
6396 | else | |
6397 | { | |
6398 | switch (r_type) | |
6399 | { | |
6400 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
6401 | // ??? glibc ld.so doesn't need to support these. |
6402 | case elfcpp::R_POWERPC_DTPREL16: | |
6403 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6404 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6405 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
6406 | return; | |
42cacb20 DE |
6407 | |
6408 | default: | |
6409 | break; | |
6410 | } | |
6411 | } | |
6412 | ||
6413 | // This prevents us from issuing more than one error per reloc | |
6414 | // section. But we can still wind up issuing more than one | |
6415 | // error per object file. | |
6416 | if (this->issued_non_pic_error_) | |
6417 | return; | |
33aea2fd | 6418 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
6419 | object->error(_("requires unsupported dynamic reloc; " |
6420 | "recompile with -fPIC")); | |
6421 | this->issued_non_pic_error_ = true; | |
6422 | return; | |
6423 | } | |
6424 | ||
e5d5f5ed AM |
6425 | // Return whether we need to make a PLT entry for a relocation of the |
6426 | // given type against a STT_GNU_IFUNC symbol. | |
6427 | ||
6428 | template<int size, bool big_endian> | |
6429 | bool | |
6430 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 6431 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 6432 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
6433 | unsigned int r_type, |
6434 | bool report_err) | |
e5d5f5ed | 6435 | { |
c9824451 AM |
6436 | // In non-pic code any reference will resolve to the plt call stub |
6437 | // for the ifunc symbol. | |
9055360d AM |
6438 | if ((size == 32 || target->abiversion() >= 2) |
6439 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
6440 | return true; |
6441 | ||
e5d5f5ed AM |
6442 | switch (r_type) |
6443 | { | |
b3ccdeb5 | 6444 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
6445 | case elfcpp::R_POWERPC_ADDR32: |
6446 | case elfcpp::R_POWERPC_UADDR32: | |
6447 | if (size == 32) | |
b3ccdeb5 | 6448 | return false; |
e5d5f5ed AM |
6449 | break; |
6450 | ||
6451 | case elfcpp::R_PPC64_ADDR64: | |
6452 | case elfcpp::R_PPC64_UADDR64: | |
6453 | if (size == 64) | |
b3ccdeb5 | 6454 | return false; |
e5d5f5ed AM |
6455 | break; |
6456 | ||
b3ccdeb5 | 6457 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
6458 | case elfcpp::R_POWERPC_GOT16: |
6459 | case elfcpp::R_POWERPC_GOT16_LO: | |
6460 | case elfcpp::R_POWERPC_GOT16_HI: | |
6461 | case elfcpp::R_POWERPC_GOT16_HA: | |
6462 | case elfcpp::R_PPC64_GOT16_DS: | |
6463 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 6464 | return false; |
e5d5f5ed | 6465 | |
b3ccdeb5 | 6466 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
6467 | case elfcpp::R_POWERPC_ADDR24: |
6468 | case elfcpp::R_POWERPC_ADDR14: | |
6469 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6470 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
6471 | case elfcpp::R_POWERPC_REL24: | |
6472 | case elfcpp::R_PPC_PLTREL24: | |
6473 | case elfcpp::R_POWERPC_REL14: | |
6474 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6475 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
6476 | return true; | |
6477 | ||
6478 | default: | |
6479 | break; | |
6480 | } | |
6481 | ||
6482 | // Anything else is a problem. | |
6483 | // If we are building a static executable, the libc startup function | |
6484 | // responsible for applying indirect function relocations is going | |
6485 | // to complain about the reloc type. | |
6486 | // If we are building a dynamic executable, we will have a text | |
6487 | // relocation. The dynamic loader will set the text segment | |
6488 | // writable and non-executable to apply text relocations. So we'll | |
6489 | // segfault when trying to run the indirection function to resolve | |
6490 | // the reloc. | |
b3ccdeb5 AM |
6491 | if (report_err) |
6492 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
6493 | object->name().c_str(), r_type); |
6494 | return false; | |
6495 | } | |
6496 | ||
5edad15d AM |
6497 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6498 | // reloc. | |
6499 | ||
6500 | static bool | |
6501 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
6502 | { | |
6503 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
6504 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6505 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6506 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6507 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6508 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6509 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6510 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6511 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6512 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6513 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6514 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6515 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6516 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6517 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6518 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
6519 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
6520 | /* Exclude lfqu by testing reloc. If relocs are ever | |
6521 | defined for the reduced D field in psq_lu then those | |
6522 | will need testing too. */ | |
6523 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6524 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6525 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
6526 | && (insn & 1) == 0) | |
6527 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
6528 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
6529 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
6530 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
6531 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
6532 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
6533 | && (insn & 1) == 0)); | |
6534 | } | |
6535 | ||
42cacb20 DE |
6536 | // Scan a relocation for a local symbol. |
6537 | ||
6538 | template<int size, bool big_endian> | |
6539 | inline void | |
6540 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
6541 | Symbol_table* symtab, |
6542 | Layout* layout, | |
6543 | Target_powerpc<size, big_endian>* target, | |
6544 | Sized_relobj_file<size, big_endian>* object, | |
6545 | unsigned int data_shndx, | |
6546 | Output_section* output_section, | |
6547 | const elfcpp::Rela<size, big_endian>& reloc, | |
6548 | unsigned int r_type, | |
e5d5f5ed | 6549 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 6550 | bool is_discarded) |
42cacb20 | 6551 | { |
34e0882b | 6552 | this->maybe_skip_tls_get_addr_call(target, r_type, NULL); |
e3deeb9c AM |
6553 | |
6554 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
6555 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
6556 | { | |
6557 | this->expect_tls_get_addr_call(); | |
6558 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6559 | if (tls_type != tls::TLSOPT_NONE) | |
6560 | this->skip_next_tls_get_addr_call(); | |
6561 | } | |
6562 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
6563 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
6564 | { | |
6565 | this->expect_tls_get_addr_call(); | |
6566 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6567 | if (tls_type != tls::TLSOPT_NONE) | |
6568 | this->skip_next_tls_get_addr_call(); | |
6569 | } | |
6570 | ||
dd93cd0a AM |
6571 | Powerpc_relobj<size, big_endian>* ppc_object |
6572 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6573 | ||
bfdfa4cd AM |
6574 | if (is_discarded) |
6575 | { | |
6576 | if (size == 64 | |
6577 | && data_shndx == ppc_object->opd_shndx() | |
6578 | && r_type == elfcpp::R_PPC64_ADDR64) | |
6579 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
6580 | return; | |
6581 | } | |
6582 | ||
e5d5f5ed AM |
6583 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
6584 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 6585 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 6586 | { |
ec661b9d AM |
6587 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
6588 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6589 | r_type, r_sym, reloc.get_r_addend()); | |
6590 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 6591 | } |
e5d5f5ed | 6592 | |
42cacb20 DE |
6593 | switch (r_type) |
6594 | { | |
6595 | case elfcpp::R_POWERPC_NONE: | |
6596 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6597 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 6598 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 6599 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
6600 | break; |
6601 | ||
6602 | case elfcpp::R_PPC64_TOC: | |
6603 | { | |
6604 | Output_data_got_powerpc<size, big_endian>* got | |
6605 | = target->got_section(symtab, layout); | |
6606 | if (parameters->options().output_is_position_independent()) | |
6607 | { | |
bfdfa4cd AM |
6608 | Address off = reloc.get_r_offset(); |
6609 | if (size == 64 | |
9055360d | 6610 | && target->abiversion() < 2 |
bfdfa4cd AM |
6611 | && data_shndx == ppc_object->opd_shndx() |
6612 | && ppc_object->get_opd_discard(off - 8)) | |
6613 | break; | |
6614 | ||
dd93cd0a | 6615 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 6616 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
6617 | rela_dyn->add_output_section_relative(got->output_section(), |
6618 | elfcpp::R_POWERPC_RELATIVE, | |
6619 | output_section, | |
bfdfa4cd AM |
6620 | object, data_shndx, off, |
6621 | symobj->toc_base_offset()); | |
dd93cd0a AM |
6622 | } |
6623 | } | |
42cacb20 DE |
6624 | break; |
6625 | ||
6626 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 6627 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 6628 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
6629 | case elfcpp::R_POWERPC_UADDR32: |
6630 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 6631 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 6632 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
6633 | case elfcpp::R_POWERPC_ADDR16_HI: |
6634 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 6635 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
6636 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6637 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6638 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6639 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6640 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6641 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6642 | case elfcpp::R_PPC64_ADDR16_DS: | |
6643 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6644 | case elfcpp::R_POWERPC_ADDR14: | |
6645 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6646 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
6647 | // If building a shared library (or a position-independent |
6648 | // executable), we need to create a dynamic relocation for | |
6649 | // this location. | |
c9824451 | 6650 | if (parameters->options().output_is_position_independent() |
9055360d | 6651 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 6652 | { |
b3ccdeb5 AM |
6653 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6654 | is_ifunc); | |
1f98a074 | 6655 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
6656 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
6657 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 6658 | { |
b3ccdeb5 AM |
6659 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6660 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6661 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
6662 | output_section, data_shndx, |
6663 | reloc.get_r_offset(), | |
c9824451 | 6664 | reloc.get_r_addend(), false); |
2e702c99 | 6665 | } |
1f98a074 | 6666 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 6667 | { |
dd93cd0a | 6668 | check_non_pic(object, r_type); |
dd93cd0a AM |
6669 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
6670 | data_shndx, reloc.get_r_offset(), | |
6671 | reloc.get_r_addend()); | |
2e702c99 | 6672 | } |
1f98a074 AM |
6673 | else |
6674 | { | |
6675 | gold_assert(lsym.get_st_value() == 0); | |
6676 | unsigned int shndx = lsym.get_st_shndx(); | |
6677 | bool is_ordinary; | |
6678 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
6679 | &is_ordinary); | |
6680 | if (!is_ordinary) | |
6681 | object->error(_("section symbol %u has bad shndx %u"), | |
6682 | r_sym, shndx); | |
6683 | else | |
6684 | rela_dyn->add_local_section(object, shndx, r_type, | |
6685 | output_section, data_shndx, | |
6686 | reloc.get_r_offset()); | |
6687 | } | |
2e702c99 | 6688 | } |
42cacb20 DE |
6689 | break; |
6690 | ||
6691 | case elfcpp::R_POWERPC_REL24: | |
c9824451 | 6692 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6693 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
6694 | case elfcpp::R_POWERPC_REL14: |
6695 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6696 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 6697 | if (!is_ifunc) |
0e123f69 AM |
6698 | { |
6699 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6700 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6701 | r_type, r_sym, reloc.get_r_addend()); | |
6702 | } | |
ec661b9d AM |
6703 | break; |
6704 | ||
7e57d19e AM |
6705 | case elfcpp::R_PPC64_TOCSAVE: |
6706 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
6707 | // caller has already saved r2 and thus a plt call stub need not | |
6708 | // save r2. | |
6709 | if (size == 64 | |
6710 | && target->mark_pltcall(ppc_object, data_shndx, | |
6711 | reloc.get_r_offset() - 4, symtab)) | |
6712 | { | |
6713 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6714 | unsigned int shndx = lsym.get_st_shndx(); | |
6715 | bool is_ordinary; | |
6716 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
6717 | if (!is_ordinary) | |
6718 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
6719 | r_sym, shndx); | |
6720 | else | |
6721 | target->add_tocsave(ppc_object, shndx, | |
6722 | lsym.get_st_value() + reloc.get_r_addend()); | |
6723 | } | |
6724 | break; | |
6725 | ||
ec661b9d AM |
6726 | case elfcpp::R_PPC64_REL64: |
6727 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 6728 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 6729 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 6730 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 6731 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 6732 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 6733 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6734 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6735 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6736 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6737 | case elfcpp::R_PPC64_SECTOFF_DS: |
6738 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6739 | case elfcpp::R_POWERPC_TPREL16: | |
6740 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6741 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6742 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6743 | case elfcpp::R_PPC64_TPREL16_DS: |
6744 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6745 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6746 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6747 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6748 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6749 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6750 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6751 | case elfcpp::R_POWERPC_DTPREL16: |
6752 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6753 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6754 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6755 | case elfcpp::R_PPC64_DTPREL16_DS: |
6756 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6757 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6758 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6759 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6760 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6761 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6762 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6763 | case elfcpp::R_PPC64_TLSGD: |
6764 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6765 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
6766 | break; |
6767 | ||
6768 | case elfcpp::R_POWERPC_GOT16: | |
6769 | case elfcpp::R_POWERPC_GOT16_LO: | |
6770 | case elfcpp::R_POWERPC_GOT16_HI: | |
6771 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6772 | case elfcpp::R_PPC64_GOT16_DS: |
6773 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6774 | { |
c9269dff | 6775 | // The symbol requires a GOT entry. |
dd93cd0a AM |
6776 | Output_data_got_powerpc<size, big_endian>* got |
6777 | = target->got_section(symtab, layout); | |
6778 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 6779 | |
e5d5f5ed | 6780 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 6781 | { |
b01a4b04 AM |
6782 | if (is_ifunc |
6783 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6784 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
6785 | else | |
6786 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
6787 | } | |
6788 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
6789 | { | |
6790 | // If we are generating a shared object or a pie, this | |
6791 | // symbol's GOT entry will be set by a dynamic relocation. | |
6792 | unsigned int off; | |
6793 | off = got->add_constant(0); | |
6794 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 6795 | |
b3ccdeb5 AM |
6796 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
6797 | is_ifunc); | |
6798 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6799 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 6800 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 6801 | got, off, 0, false); |
2e702c99 | 6802 | } |
42cacb20 DE |
6803 | } |
6804 | break; | |
6805 | ||
cf43a2fe AM |
6806 | case elfcpp::R_PPC64_TOC16: |
6807 | case elfcpp::R_PPC64_TOC16_LO: | |
6808 | case elfcpp::R_PPC64_TOC16_HI: | |
6809 | case elfcpp::R_PPC64_TOC16_HA: | |
6810 | case elfcpp::R_PPC64_TOC16_DS: | |
6811 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6812 | // We need a GOT section. |
6813 | target->got_section(symtab, layout); | |
6814 | break; | |
6815 | ||
dd93cd0a AM |
6816 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6817 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6818 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6819 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6820 | { | |
6821 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
6822 | if (tls_type == tls::TLSOPT_NONE) | |
6823 | { | |
6824 | Output_data_got_powerpc<size, big_endian>* got | |
6825 | = target->got_section(symtab, layout); | |
6826 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
6827 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6828 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
6829 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
6830 | } |
6831 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6832 | { | |
6833 | // no GOT relocs needed for Local Exec. | |
6834 | } | |
6835 | else | |
6836 | gold_unreachable(); | |
6837 | } | |
42cacb20 DE |
6838 | break; |
6839 | ||
dd93cd0a AM |
6840 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6841 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6842 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6843 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6844 | { | |
6845 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6846 | if (tls_type == tls::TLSOPT_NONE) | |
6847 | target->tlsld_got_offset(symtab, layout, object); | |
6848 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6849 | { | |
6850 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6851 | if (parameters->options().emit_relocs()) |
6852 | { | |
6853 | Output_section* os = layout->tls_segment()->first_section(); | |
6854 | gold_assert(os != NULL); | |
6855 | os->set_needs_symtab_index(); | |
6856 | } | |
dd93cd0a AM |
6857 | } |
6858 | else | |
6859 | gold_unreachable(); | |
6860 | } | |
42cacb20 | 6861 | break; |
42cacb20 | 6862 | |
dd93cd0a AM |
6863 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
6864 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6865 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6866 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6867 | { | |
6868 | Output_data_got_powerpc<size, big_endian>* got | |
6869 | = target->got_section(symtab, layout); | |
6870 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 6871 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
6872 | } |
6873 | break; | |
42cacb20 | 6874 | |
dd93cd0a AM |
6875 | case elfcpp::R_POWERPC_GOT_TPREL16: |
6876 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6877 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
6878 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6879 | { | |
6880 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
6881 | if (tls_type == tls::TLSOPT_NONE) | |
6882 | { | |
dd93cd0a | 6883 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
6884 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
6885 | { | |
6886 | Output_data_got_powerpc<size, big_endian>* got | |
6887 | = target->got_section(symtab, layout); | |
6888 | unsigned int off = got->add_constant(0); | |
6889 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
6890 | ||
6891 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6892 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
6893 | elfcpp::R_POWERPC_TPREL, | |
6894 | got, off, 0); | |
6895 | } | |
dd93cd0a AM |
6896 | } |
6897 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6898 | { | |
6899 | // no GOT relocs needed for Local Exec. | |
6900 | } | |
6901 | else | |
6902 | gold_unreachable(); | |
6903 | } | |
6904 | break; | |
6905 | ||
6906 | default: | |
6907 | unsupported_reloc_local(object, r_type); | |
6908 | break; | |
6909 | } | |
d8f5a274 | 6910 | |
5edad15d AM |
6911 | if (size == 64 |
6912 | && parameters->options().toc_optimize()) | |
6913 | { | |
6914 | if (data_shndx == ppc_object->toc_shndx()) | |
6915 | { | |
6916 | bool ok = true; | |
6917 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
6918 | || (is_ifunc && target->abiversion() < 2)) | |
6919 | ok = false; | |
6920 | else if (parameters->options().output_is_position_independent()) | |
6921 | { | |
6922 | if (is_ifunc) | |
6923 | ok = false; | |
6924 | else | |
6925 | { | |
6926 | unsigned int shndx = lsym.get_st_shndx(); | |
6927 | if (shndx >= elfcpp::SHN_LORESERVE | |
6928 | && shndx != elfcpp::SHN_XINDEX) | |
6929 | ok = false; | |
6930 | } | |
6931 | } | |
6932 | if (!ok) | |
6933 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
6934 | } | |
6935 | ||
6936 | enum {no_check, check_lo, check_ha} insn_check; | |
6937 | switch (r_type) | |
6938 | { | |
6939 | default: | |
6940 | insn_check = no_check; | |
6941 | break; | |
6942 | ||
6943 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6944 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6945 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6946 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6947 | case elfcpp::R_POWERPC_GOT16_HA: | |
6948 | case elfcpp::R_PPC64_TOC16_HA: | |
6949 | insn_check = check_ha; | |
6950 | break; | |
6951 | ||
6952 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6953 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6954 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6955 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6956 | case elfcpp::R_POWERPC_GOT16_LO: | |
6957 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
6958 | case elfcpp::R_PPC64_TOC16_LO: | |
6959 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
6960 | insn_check = check_lo; | |
6961 | break; | |
6962 | } | |
6963 | ||
6964 | section_size_type slen; | |
6965 | const unsigned char* view = NULL; | |
6966 | if (insn_check != no_check) | |
6967 | { | |
6968 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
6969 | section_size_type off = | |
6970 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
6971 | if (off < slen) | |
6972 | { | |
6973 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
6974 | if (insn_check == check_lo | |
6975 | ? !ok_lo_toc_insn(insn, r_type) | |
6976 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
6977 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
6978 | { | |
6979 | ppc_object->set_no_toc_opt(); | |
6980 | gold_warning(_("%s: toc optimization is not supported " | |
6981 | "for %#08x instruction"), | |
6982 | ppc_object->name().c_str(), insn); | |
6983 | } | |
6984 | } | |
6985 | } | |
6986 | ||
6987 | switch (r_type) | |
6988 | { | |
6989 | default: | |
6990 | break; | |
6991 | case elfcpp::R_PPC64_TOC16: | |
6992 | case elfcpp::R_PPC64_TOC16_LO: | |
6993 | case elfcpp::R_PPC64_TOC16_HI: | |
6994 | case elfcpp::R_PPC64_TOC16_HA: | |
6995 | case elfcpp::R_PPC64_TOC16_DS: | |
6996 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
6997 | unsigned int shndx = lsym.get_st_shndx(); | |
6998 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6999 | bool is_ordinary; | |
7000 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
7001 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
7002 | { | |
412294da | 7003 | Address dst_off = lsym.get_st_value() + reloc.get_r_addend(); |
5edad15d AM |
7004 | if (dst_off < ppc_object->section_size(shndx)) |
7005 | { | |
7006 | bool ok = false; | |
7007 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
7008 | ok = true; | |
7009 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
7010 | { | |
7011 | // Need to check that the insn is a ld | |
7012 | if (!view) | |
7013 | view = ppc_object->section_contents(data_shndx, | |
7014 | &slen, | |
7015 | false); | |
7016 | section_size_type off = | |
7017 | (convert_to_section_size_type(reloc.get_r_offset()) | |
7018 | + (big_endian ? -2 : 3)); | |
7019 | if (off < slen | |
7020 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
7021 | ok = true; | |
7022 | } | |
7023 | if (!ok) | |
7024 | ppc_object->set_no_toc_opt(dst_off); | |
7025 | } | |
7026 | } | |
7027 | break; | |
7028 | } | |
7029 | } | |
7030 | ||
f159cdb6 AM |
7031 | if (size == 32) |
7032 | { | |
7033 | switch (r_type) | |
7034 | { | |
7035 | case elfcpp::R_POWERPC_REL32: | |
7036 | if (ppc_object->got2_shndx() != 0 | |
7037 | && parameters->options().output_is_position_independent()) | |
7038 | { | |
7039 | unsigned int shndx = lsym.get_st_shndx(); | |
7040 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7041 | bool is_ordinary; | |
7042 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
7043 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
7044 | && (ppc_object->section_flags(data_shndx) | |
7045 | & elfcpp::SHF_EXECINSTR) != 0) | |
7046 | gold_error(_("%s: unsupported -mbss-plt code"), | |
7047 | ppc_object->name().c_str()); | |
7048 | } | |
7049 | break; | |
7050 | default: | |
7051 | break; | |
7052 | } | |
7053 | } | |
7054 | ||
d8f5a274 AM |
7055 | switch (r_type) |
7056 | { | |
7057 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7058 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7059 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7060 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7061 | case elfcpp::R_POWERPC_GOT16: | |
7062 | case elfcpp::R_PPC64_GOT16_DS: | |
7063 | case elfcpp::R_PPC64_TOC16: | |
7064 | case elfcpp::R_PPC64_TOC16_DS: | |
7065 | ppc_object->set_has_small_toc_reloc(); | |
7066 | default: | |
7067 | break; | |
7068 | } | |
dd93cd0a AM |
7069 | } |
7070 | ||
7071 | // Report an unsupported relocation against a global symbol. | |
7072 | ||
7073 | template<int size, bool big_endian> | |
7074 | void | |
7075 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
7076 | Sized_relobj_file<size, big_endian>* object, | |
7077 | unsigned int r_type, | |
7078 | Symbol* gsym) | |
7079 | { | |
42cacb20 DE |
7080 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
7081 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
7082 | } | |
7083 | ||
7084 | // Scan a relocation for a global symbol. | |
7085 | ||
7086 | template<int size, bool big_endian> | |
7087 | inline void | |
7088 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
7089 | Symbol_table* symtab, |
7090 | Layout* layout, | |
7091 | Target_powerpc<size, big_endian>* target, | |
7092 | Sized_relobj_file<size, big_endian>* object, | |
7093 | unsigned int data_shndx, | |
7094 | Output_section* output_section, | |
7095 | const elfcpp::Rela<size, big_endian>& reloc, | |
7096 | unsigned int r_type, | |
7097 | Symbol* gsym) | |
42cacb20 | 7098 | { |
34e0882b AM |
7099 | if (this->maybe_skip_tls_get_addr_call(target, r_type, gsym) |
7100 | == Track_tls::SKIP) | |
e3deeb9c AM |
7101 | return; |
7102 | ||
34e0882b AM |
7103 | if (target->replace_tls_get_addr(gsym)) |
7104 | // Change a __tls_get_addr reference to __tls_get_addr_opt | |
7105 | // so dynamic relocs are emitted against the latter symbol. | |
7106 | gsym = target->tls_get_addr_opt(); | |
7107 | ||
e3deeb9c AM |
7108 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) |
7109 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7110 | { | |
7111 | this->expect_tls_get_addr_call(); | |
7112 | const bool final = gsym->final_value_is_known(); | |
7113 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7114 | if (tls_type != tls::TLSOPT_NONE) | |
7115 | this->skip_next_tls_get_addr_call(); | |
7116 | } | |
7117 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7118 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7119 | { | |
7120 | this->expect_tls_get_addr_call(); | |
7121 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7122 | if (tls_type != tls::TLSOPT_NONE) | |
7123 | this->skip_next_tls_get_addr_call(); | |
7124 | } | |
7125 | ||
dd93cd0a AM |
7126 | Powerpc_relobj<size, big_endian>* ppc_object |
7127 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7128 | ||
e5d5f5ed | 7129 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 7130 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
7131 | bool pushed_ifunc = false; |
7132 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 7133 | { |
0e123f69 | 7134 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 7135 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 7136 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 7137 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 7138 | pushed_ifunc = true; |
ec661b9d | 7139 | } |
e5d5f5ed | 7140 | |
42cacb20 DE |
7141 | switch (r_type) |
7142 | { | |
7143 | case elfcpp::R_POWERPC_NONE: | |
7144 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7145 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 7146 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 7147 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 7148 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
7149 | break; |
7150 | ||
7151 | case elfcpp::R_PPC64_TOC: | |
7152 | { | |
7153 | Output_data_got_powerpc<size, big_endian>* got | |
7154 | = target->got_section(symtab, layout); | |
7155 | if (parameters->options().output_is_position_independent()) | |
7156 | { | |
bfdfa4cd AM |
7157 | Address off = reloc.get_r_offset(); |
7158 | if (size == 64 | |
7159 | && data_shndx == ppc_object->opd_shndx() | |
7160 | && ppc_object->get_opd_discard(off - 8)) | |
7161 | break; | |
7162 | ||
dd93cd0a AM |
7163 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7164 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
7165 | if (data_shndx != ppc_object->opd_shndx()) | |
7166 | symobj = static_cast | |
7167 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7168 | rela_dyn->add_output_section_relative(got->output_section(), | |
7169 | elfcpp::R_POWERPC_RELATIVE, | |
7170 | output_section, | |
bfdfa4cd | 7171 | object, data_shndx, off, |
dd93cd0a AM |
7172 | symobj->toc_base_offset()); |
7173 | } | |
7174 | } | |
42cacb20 DE |
7175 | break; |
7176 | ||
c9269dff | 7177 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 7178 | if (size == 64 |
9055360d | 7179 | && target->abiversion() < 2 |
bfdfa4cd AM |
7180 | && data_shndx == ppc_object->opd_shndx() |
7181 | && (gsym->is_defined_in_discarded_section() | |
7182 | || gsym->object() != object)) | |
7183 | { | |
7184 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
7185 | break; | |
7186 | } | |
d8e90251 | 7187 | // Fall through. |
dd93cd0a | 7188 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 7189 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
7190 | case elfcpp::R_POWERPC_UADDR32: |
7191 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
7192 | case elfcpp::R_POWERPC_ADDR16: |
7193 | case elfcpp::R_POWERPC_ADDR16_LO: | |
7194 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7195 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 7196 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
7197 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7198 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
7199 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7200 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7201 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7202 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7203 | case elfcpp::R_PPC64_ADDR16_DS: | |
7204 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
7205 | case elfcpp::R_POWERPC_ADDR14: | |
7206 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7207 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 7208 | { |
c9269dff AM |
7209 | // Make a PLT entry if necessary. |
7210 | if (gsym->needs_plt_entry()) | |
7211 | { | |
9055360d AM |
7212 | // Since this is not a PC-relative relocation, we may be |
7213 | // taking the address of a function. In that case we need to | |
7214 | // set the entry in the dynamic symbol table to the address of | |
7215 | // the PLT call stub. | |
7216 | bool need_ifunc_plt = false; | |
7217 | if ((size == 32 || target->abiversion() >= 2) | |
7218 | && gsym->is_from_dynobj() | |
7219 | && !parameters->options().output_is_position_independent()) | |
7220 | { | |
7221 | gsym->set_needs_dynsym_value(); | |
7222 | need_ifunc_plt = true; | |
7223 | } | |
7224 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 7225 | { |
0e123f69 | 7226 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 7227 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 7228 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
7229 | reloc.get_r_addend()); |
7230 | target->make_plt_entry(symtab, layout, gsym); | |
7231 | } | |
c9269dff AM |
7232 | } |
7233 | // Make a dynamic relocation if necessary. | |
88b8e639 | 7234 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 7235 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 7236 | { |
a82bef93 ST |
7237 | if (!parameters->options().output_is_position_independent() |
7238 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
7239 | { |
7240 | target->copy_reloc(symtab, layout, object, | |
7241 | data_shndx, output_section, gsym, reloc); | |
7242 | } | |
9055360d AM |
7243 | else if ((((size == 32 |
7244 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
7245 | || (size == 64 | |
7246 | && r_type == elfcpp::R_PPC64_ADDR64 | |
7247 | && target->abiversion() >= 2)) | |
627b30b7 AM |
7248 | && gsym->can_use_relative_reloc(false) |
7249 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
7250 | && parameters->options().shared())) | |
7251 | || (size == 64 | |
7252 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 7253 | && target->abiversion() < 2 |
627b30b7 AM |
7254 | && (gsym->can_use_relative_reloc(false) |
7255 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 7256 | { |
b3ccdeb5 AM |
7257 | Reloc_section* rela_dyn |
7258 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
7259 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
7260 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
7261 | rela_dyn->add_symbolless_global_addend( |
7262 | gsym, dynrel, output_section, object, data_shndx, | |
7263 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
7264 | } |
7265 | else | |
7266 | { | |
b3ccdeb5 AM |
7267 | Reloc_section* rela_dyn |
7268 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 7269 | check_non_pic(object, r_type); |
dd93cd0a AM |
7270 | rela_dyn->add_global(gsym, r_type, output_section, |
7271 | object, data_shndx, | |
7272 | reloc.get_r_offset(), | |
7273 | reloc.get_r_addend()); | |
5edad15d AM |
7274 | |
7275 | if (size == 64 | |
7276 | && parameters->options().toc_optimize() | |
7277 | && data_shndx == ppc_object->toc_shndx()) | |
7278 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
7279 | } |
7280 | } | |
42cacb20 DE |
7281 | } |
7282 | break; | |
7283 | ||
cf43a2fe | 7284 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 7285 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
7286 | if (!is_ifunc) |
7287 | { | |
0e123f69 | 7288 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 7289 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 7290 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
7291 | if (gsym->needs_plt_entry() |
7292 | || (!gsym->final_value_is_known() | |
7293 | && (gsym->is_undefined() | |
7294 | || gsym->is_from_dynobj() | |
7295 | || gsym->is_preemptible()))) | |
7296 | target->make_plt_entry(symtab, layout, gsym); | |
7297 | } | |
d8e90251 | 7298 | // Fall through. |
42cacb20 | 7299 | |
3ea0a085 | 7300 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 7301 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 7302 | // Make a dynamic relocation if necessary. |
88b8e639 | 7303 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 7304 | { |
a82bef93 ST |
7305 | if (!parameters->options().output_is_position_independent() |
7306 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
7307 | { |
7308 | target->copy_reloc(symtab, layout, object, | |
7309 | data_shndx, output_section, gsym, | |
7310 | reloc); | |
7311 | } | |
7312 | else | |
7313 | { | |
b3ccdeb5 AM |
7314 | Reloc_section* rela_dyn |
7315 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
7316 | check_non_pic(object, r_type); |
7317 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
7318 | data_shndx, reloc.get_r_offset(), | |
7319 | reloc.get_r_addend()); | |
7320 | } | |
7321 | } | |
7322 | break; | |
7323 | ||
ec661b9d AM |
7324 | case elfcpp::R_POWERPC_REL14: |
7325 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7326 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 7327 | if (!is_ifunc) |
0e123f69 AM |
7328 | { |
7329 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7330 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7331 | r_type, r_sym, reloc.get_r_addend()); | |
7332 | } | |
ec661b9d AM |
7333 | break; |
7334 | ||
7e57d19e AM |
7335 | case elfcpp::R_PPC64_TOCSAVE: |
7336 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
7337 | // caller has already saved r2 and thus a plt call stub need not | |
7338 | // save r2. | |
7339 | if (size == 64 | |
7340 | && target->mark_pltcall(ppc_object, data_shndx, | |
7341 | reloc.get_r_offset() - 4, symtab)) | |
7342 | { | |
7343 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7344 | bool is_ordinary; | |
7345 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
7346 | if (!is_ordinary) | |
7347 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
7348 | r_sym, shndx); | |
7349 | else | |
7350 | { | |
7351 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
7352 | target->add_tocsave(ppc_object, shndx, | |
7353 | sym->value() + reloc.get_r_addend()); | |
7354 | } | |
7355 | } | |
7356 | break; | |
7357 | ||
6ce78956 AM |
7358 | case elfcpp::R_POWERPC_REL16: |
7359 | case elfcpp::R_POWERPC_REL16_LO: | |
7360 | case elfcpp::R_POWERPC_REL16_HI: | |
7361 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 7362 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 7363 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 7364 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 7365 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 7366 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
7367 | case elfcpp::R_PPC64_SECTOFF_DS: |
7368 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7369 | case elfcpp::R_POWERPC_TPREL16: | |
7370 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7371 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 7372 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
7373 | case elfcpp::R_PPC64_TPREL16_DS: |
7374 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
7375 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
7376 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7377 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 7378 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 7379 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 7380 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
7381 | case elfcpp::R_POWERPC_DTPREL16: |
7382 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7383 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7384 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
7385 | case elfcpp::R_PPC64_DTPREL16_DS: |
7386 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
7387 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7388 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7389 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7390 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7391 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7392 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
7393 | case elfcpp::R_PPC64_TLSGD: |
7394 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 7395 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
7396 | break; |
7397 | ||
42cacb20 DE |
7398 | case elfcpp::R_POWERPC_GOT16: |
7399 | case elfcpp::R_POWERPC_GOT16_LO: | |
7400 | case elfcpp::R_POWERPC_GOT16_HI: | |
7401 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
7402 | case elfcpp::R_PPC64_GOT16_DS: |
7403 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 7404 | { |
c9269dff AM |
7405 | // The symbol requires a GOT entry. |
7406 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
7407 | |
7408 | got = target->got_section(symtab, layout); | |
2e702c99 | 7409 | if (gsym->final_value_is_known()) |
2e702c99 | 7410 | { |
b01a4b04 AM |
7411 | if (is_ifunc |
7412 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
7413 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
7414 | else | |
7415 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
7416 | } | |
7417 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
7418 | { | |
7419 | // If we are generating a shared object or a pie, this | |
7420 | // symbol's GOT entry will be set by a dynamic relocation. | |
7421 | unsigned int off = got->add_constant(0); | |
7422 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
7423 | ||
b3ccdeb5 AM |
7424 | Reloc_section* rela_dyn |
7425 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
7426 | ||
e5d5f5ed | 7427 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
7428 | && !((size == 32 |
7429 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
7430 | && gsym->visibility() == elfcpp::STV_PROTECTED |
7431 | && parameters->options().shared())) | |
2e702c99 | 7432 | { |
b3ccdeb5 AM |
7433 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
7434 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
7435 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
7436 | } | |
7437 | else | |
7438 | { | |
7439 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
7440 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 7441 | } |
2e702c99 | 7442 | } |
42cacb20 DE |
7443 | } |
7444 | break; | |
7445 | ||
cf43a2fe AM |
7446 | case elfcpp::R_PPC64_TOC16: |
7447 | case elfcpp::R_PPC64_TOC16_LO: | |
7448 | case elfcpp::R_PPC64_TOC16_HI: | |
7449 | case elfcpp::R_PPC64_TOC16_HA: | |
7450 | case elfcpp::R_PPC64_TOC16_DS: | |
7451 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
7452 | // We need a GOT section. |
7453 | target->got_section(symtab, layout); | |
7454 | break; | |
7455 | ||
dd93cd0a AM |
7456 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7457 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7458 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7459 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7460 | { | |
7461 | const bool final = gsym->final_value_is_known(); | |
7462 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7463 | if (tls_type == tls::TLSOPT_NONE) | |
7464 | { | |
7465 | Output_data_got_powerpc<size, big_endian>* got | |
7466 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
7467 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7468 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
7469 | elfcpp::R_POWERPC_DTPMOD, |
7470 | elfcpp::R_POWERPC_DTPREL); | |
7471 | } | |
7472 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7473 | { | |
acc276d8 AM |
7474 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7475 | { | |
7476 | Output_data_got_powerpc<size, big_endian>* got | |
7477 | = target->got_section(symtab, layout); | |
7478 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7479 | if (gsym->is_undefined() | |
7480 | || gsym->is_from_dynobj()) | |
7481 | { | |
7482 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7483 | elfcpp::R_POWERPC_TPREL); | |
7484 | } | |
7485 | else | |
7486 | { | |
7487 | unsigned int off = got->add_constant(0); | |
7488 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7489 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7490 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7491 | got, off, 0); | |
7492 | } | |
7493 | } | |
dd93cd0a AM |
7494 | } |
7495 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7496 | { | |
7497 | // no GOT relocs needed for Local Exec. | |
7498 | } | |
7499 | else | |
7500 | gold_unreachable(); | |
7501 | } | |
42cacb20 DE |
7502 | break; |
7503 | ||
dd93cd0a AM |
7504 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
7505 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7506 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7507 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7508 | { | |
7509 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7510 | if (tls_type == tls::TLSOPT_NONE) | |
7511 | target->tlsld_got_offset(symtab, layout, object); | |
7512 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7513 | { | |
7514 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
7515 | if (parameters->options().emit_relocs()) |
7516 | { | |
7517 | Output_section* os = layout->tls_segment()->first_section(); | |
7518 | gold_assert(os != NULL); | |
7519 | os->set_needs_symtab_index(); | |
7520 | } | |
dd93cd0a AM |
7521 | } |
7522 | else | |
7523 | gold_unreachable(); | |
7524 | } | |
7525 | break; | |
7526 | ||
7527 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7528 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7529 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7530 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7531 | { | |
7532 | Output_data_got_powerpc<size, big_endian>* got | |
7533 | = target->got_section(symtab, layout); | |
bd73a62d AM |
7534 | if (!gsym->final_value_is_known() |
7535 | && (gsym->is_from_dynobj() | |
7536 | || gsym->is_undefined() | |
7537 | || gsym->is_preemptible())) | |
7538 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
7539 | target->rela_dyn_section(layout), | |
7540 | elfcpp::R_POWERPC_DTPREL); | |
7541 | else | |
7542 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
7543 | } |
7544 | break; | |
7545 | ||
7546 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7547 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7548 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7549 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7550 | { | |
7551 | const bool final = gsym->final_value_is_known(); | |
7552 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7553 | if (tls_type == tls::TLSOPT_NONE) | |
7554 | { | |
acc276d8 AM |
7555 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
7556 | { | |
7557 | Output_data_got_powerpc<size, big_endian>* got | |
7558 | = target->got_section(symtab, layout); | |
7559 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7560 | if (gsym->is_undefined() | |
7561 | || gsym->is_from_dynobj()) | |
7562 | { | |
7563 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
7564 | elfcpp::R_POWERPC_TPREL); | |
7565 | } | |
7566 | else | |
7567 | { | |
7568 | unsigned int off = got->add_constant(0); | |
7569 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
7570 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
7571 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
7572 | got, off, 0); | |
7573 | } | |
7574 | } | |
dd93cd0a AM |
7575 | } |
7576 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7577 | { | |
7578 | // no GOT relocs needed for Local Exec. | |
7579 | } | |
7580 | else | |
7581 | gold_unreachable(); | |
7582 | } | |
42cacb20 DE |
7583 | break; |
7584 | ||
7585 | default: | |
7586 | unsupported_reloc_global(object, r_type, gsym); | |
7587 | break; | |
7588 | } | |
d8f5a274 | 7589 | |
5edad15d AM |
7590 | if (size == 64 |
7591 | && parameters->options().toc_optimize()) | |
7592 | { | |
7593 | if (data_shndx == ppc_object->toc_shndx()) | |
7594 | { | |
7595 | bool ok = true; | |
7596 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
7597 | || (is_ifunc && target->abiversion() < 2)) | |
7598 | ok = false; | |
7599 | else if (parameters->options().output_is_position_independent() | |
7600 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
7601 | ok = false; | |
7602 | if (!ok) | |
7603 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
7604 | } | |
7605 | ||
7606 | enum {no_check, check_lo, check_ha} insn_check; | |
7607 | switch (r_type) | |
7608 | { | |
7609 | default: | |
7610 | insn_check = no_check; | |
7611 | break; | |
7612 | ||
7613 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7614 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7615 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7616 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7617 | case elfcpp::R_POWERPC_GOT16_HA: | |
7618 | case elfcpp::R_PPC64_TOC16_HA: | |
7619 | insn_check = check_ha; | |
7620 | break; | |
7621 | ||
7622 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7623 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7624 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7625 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7626 | case elfcpp::R_POWERPC_GOT16_LO: | |
7627 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7628 | case elfcpp::R_PPC64_TOC16_LO: | |
7629 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7630 | insn_check = check_lo; | |
7631 | break; | |
7632 | } | |
7633 | ||
7634 | section_size_type slen; | |
7635 | const unsigned char* view = NULL; | |
7636 | if (insn_check != no_check) | |
7637 | { | |
7638 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
7639 | section_size_type off = | |
7640 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
7641 | if (off < slen) | |
7642 | { | |
7643 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
7644 | if (insn_check == check_lo | |
7645 | ? !ok_lo_toc_insn(insn, r_type) | |
7646 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7647 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
7648 | { | |
7649 | ppc_object->set_no_toc_opt(); | |
7650 | gold_warning(_("%s: toc optimization is not supported " | |
7651 | "for %#08x instruction"), | |
7652 | ppc_object->name().c_str(), insn); | |
7653 | } | |
7654 | } | |
7655 | } | |
7656 | ||
7657 | switch (r_type) | |
7658 | { | |
7659 | default: | |
7660 | break; | |
7661 | case elfcpp::R_PPC64_TOC16: | |
7662 | case elfcpp::R_PPC64_TOC16_LO: | |
7663 | case elfcpp::R_PPC64_TOC16_HI: | |
7664 | case elfcpp::R_PPC64_TOC16_HA: | |
7665 | case elfcpp::R_PPC64_TOC16_DS: | |
7666 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
7667 | if (gsym->source() == Symbol::FROM_OBJECT | |
7668 | && !gsym->object()->is_dynamic()) | |
7669 | { | |
7670 | Powerpc_relobj<size, big_endian>* sym_object | |
7671 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7672 | bool is_ordinary; | |
7673 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
7674 | if (shndx == sym_object->toc_shndx()) | |
7675 | { | |
7676 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
412294da | 7677 | Address dst_off = sym->value() + reloc.get_r_addend(); |
5edad15d AM |
7678 | if (dst_off < sym_object->section_size(shndx)) |
7679 | { | |
7680 | bool ok = false; | |
7681 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
7682 | ok = true; | |
7683 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
7684 | { | |
7685 | // Need to check that the insn is a ld | |
7686 | if (!view) | |
7687 | view = ppc_object->section_contents(data_shndx, | |
7688 | &slen, | |
7689 | false); | |
7690 | section_size_type off = | |
7691 | (convert_to_section_size_type(reloc.get_r_offset()) | |
7692 | + (big_endian ? -2 : 3)); | |
7693 | if (off < slen | |
7694 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
7695 | ok = true; | |
7696 | } | |
7697 | if (!ok) | |
7698 | sym_object->set_no_toc_opt(dst_off); | |
7699 | } | |
7700 | } | |
7701 | } | |
7702 | break; | |
7703 | } | |
7704 | } | |
7705 | ||
f159cdb6 AM |
7706 | if (size == 32) |
7707 | { | |
7708 | switch (r_type) | |
7709 | { | |
7710 | case elfcpp::R_PPC_LOCAL24PC: | |
7711 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
7712 | gold_error(_("%s: unsupported -mbss-plt code"), | |
7713 | ppc_object->name().c_str()); | |
7714 | break; | |
7715 | default: | |
7716 | break; | |
7717 | } | |
7718 | } | |
7719 | ||
d8f5a274 AM |
7720 | switch (r_type) |
7721 | { | |
7722 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7723 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7724 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7725 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7726 | case elfcpp::R_POWERPC_GOT16: | |
7727 | case elfcpp::R_PPC64_GOT16_DS: | |
7728 | case elfcpp::R_PPC64_TOC16: | |
7729 | case elfcpp::R_PPC64_TOC16_DS: | |
7730 | ppc_object->set_has_small_toc_reloc(); | |
7731 | default: | |
7732 | break; | |
7733 | } | |
42cacb20 DE |
7734 | } |
7735 | ||
6d03d481 ST |
7736 | // Process relocations for gc. |
7737 | ||
7738 | template<int size, bool big_endian> | |
7739 | void | |
7740 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
7741 | Symbol_table* symtab, |
7742 | Layout* layout, | |
7743 | Sized_relobj_file<size, big_endian>* object, | |
7744 | unsigned int data_shndx, | |
7745 | unsigned int, | |
7746 | const unsigned char* prelocs, | |
7747 | size_t reloc_count, | |
7748 | Output_section* output_section, | |
7749 | bool needs_special_offset_handling, | |
7750 | size_t local_symbol_count, | |
7751 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
7752 | { |
7753 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
7754 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
7755 | Classify_reloc; | |
7756 | ||
e81fea4d AM |
7757 | Powerpc_relobj<size, big_endian>* ppc_object |
7758 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7759 | if (size == 64) | |
7760 | ppc_object->set_opd_valid(); | |
7761 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
7762 | { | |
7763 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
7764 | for (p = ppc_object->access_from_map()->begin(); | |
7765 | p != ppc_object->access_from_map()->end(); | |
7766 | ++p) | |
7767 | { | |
7768 | Address dst_off = p->first; | |
7769 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
7770 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
7771 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
7772 | { | |
efc6fa12 | 7773 | Relobj* src_obj = s->first; |
e81fea4d AM |
7774 | unsigned int src_indx = s->second; |
7775 | symtab->gc()->add_reference(src_obj, src_indx, | |
7776 | ppc_object, dst_indx); | |
7777 | } | |
7778 | p->second.clear(); | |
7779 | } | |
7780 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 7781 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
7782 | // Don't look at .opd relocs as .opd will reference everything. |
7783 | return; | |
7784 | } | |
6d03d481 | 7785 | |
4d625b70 | 7786 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
7787 | symtab, |
7788 | layout, | |
7789 | this, | |
7790 | object, | |
7791 | data_shndx, | |
7792 | prelocs, | |
7793 | reloc_count, | |
7794 | output_section, | |
7795 | needs_special_offset_handling, | |
7796 | local_symbol_count, | |
7797 | plocal_symbols); | |
7798 | } | |
7799 | ||
e81fea4d AM |
7800 | // Handle target specific gc actions when adding a gc reference from |
7801 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
7802 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
7803 | // section of a function descriptor. | |
7804 | ||
7805 | template<int size, bool big_endian> | |
7806 | void | |
7807 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
7808 | Symbol_table* symtab, | |
efc6fa12 | 7809 | Relobj* src_obj, |
e81fea4d | 7810 | unsigned int src_shndx, |
efc6fa12 | 7811 | Relobj* dst_obj, |
e81fea4d AM |
7812 | unsigned int dst_shndx, |
7813 | Address dst_off) const | |
7814 | { | |
6c77229c AM |
7815 | if (size != 64 || dst_obj->is_dynamic()) |
7816 | return; | |
7817 | ||
e81fea4d AM |
7818 | Powerpc_relobj<size, big_endian>* ppc_object |
7819 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 7820 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7821 | { |
7822 | if (ppc_object->opd_valid()) | |
7823 | { | |
7824 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
7825 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
7826 | } | |
7827 | else | |
7828 | { | |
7829 | // If we haven't run scan_opd_relocs, we must delay | |
7830 | // processing this function descriptor reference. | |
7831 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
7832 | } | |
7833 | } | |
7834 | } | |
7835 | ||
7836 | // Add any special sections for this symbol to the gc work list. | |
7837 | // For powerpc64, this adds the code section of a function | |
7838 | // descriptor. | |
7839 | ||
7840 | template<int size, bool big_endian> | |
7841 | void | |
7842 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
7843 | Symbol_table* symtab, | |
7844 | Symbol* sym) const | |
7845 | { | |
7846 | if (size == 64) | |
7847 | { | |
7848 | Powerpc_relobj<size, big_endian>* ppc_object | |
7849 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
7850 | bool is_ordinary; | |
7851 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 7852 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
7853 | { |
7854 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
7855 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
7856 | if (ppc_object->opd_valid()) |
7857 | { | |
7858 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
7859 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
7860 | dst_indx)); | |
c6de8ed4 AM |
7861 | } |
7862 | else | |
7863 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
7864 | } |
7865 | } | |
7866 | } | |
7867 | ||
dc3714f3 AM |
7868 | // For a symbol location in .opd, set LOC to the location of the |
7869 | // function entry. | |
7870 | ||
7871 | template<int size, bool big_endian> | |
7872 | void | |
7873 | Target_powerpc<size, big_endian>::do_function_location( | |
7874 | Symbol_location* loc) const | |
7875 | { | |
a2d7bf59 | 7876 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
7877 | { |
7878 | if (loc->object->is_dynamic()) | |
7879 | { | |
7880 | Powerpc_dynobj<size, big_endian>* ppc_object | |
7881 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
7882 | if (loc->shndx == ppc_object->opd_shndx()) | |
7883 | { | |
7884 | Address dest_off; | |
7885 | Address off = loc->offset - ppc_object->opd_address(); | |
7886 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
7887 | loc->offset = dest_off; | |
7888 | } | |
7889 | } | |
7890 | else | |
7891 | { | |
7892 | const Powerpc_relobj<size, big_endian>* ppc_object | |
7893 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
7894 | if (loc->shndx == ppc_object->opd_shndx()) | |
7895 | { | |
7896 | Address dest_off; | |
7897 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
7898 | loc->offset = dest_off; | |
7899 | } | |
7900 | } | |
7901 | } | |
7902 | } | |
7903 | ||
bbec1a5d AM |
7904 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
7905 | // compiled with -fsplit-stack. The function calls non-split-stack | |
7906 | // code. Change the function to ensure it has enough stack space to | |
7907 | // call some random function. | |
7908 | ||
7909 | template<int size, bool big_endian> | |
7910 | void | |
7911 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
7912 | Relobj* object, | |
7913 | unsigned int shndx, | |
7914 | section_offset_type fnoffset, | |
7915 | section_size_type fnsize, | |
6e0813d3 CC |
7916 | const unsigned char* prelocs, |
7917 | size_t reloc_count, | |
bbec1a5d AM |
7918 | unsigned char* view, |
7919 | section_size_type view_size, | |
7920 | std::string* from, | |
7921 | std::string* to) const | |
7922 | { | |
7923 | // 32-bit not supported. | |
7924 | if (size == 32) | |
7925 | { | |
7926 | // warn | |
7927 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
7928 | prelocs, reloc_count, view, view_size, |
7929 | from, to); | |
bbec1a5d AM |
7930 | return; |
7931 | } | |
7932 | ||
7933 | // The function always starts with | |
7934 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
7935 | // addis %r12,%r1,-allocate@ha | |
7936 | // addi %r12,%r12,-allocate@l | |
7937 | // cmpld %r12,%r0 | |
7938 | // but note that the addis or addi may be replaced with a nop | |
7939 | ||
7940 | unsigned char *entry = view + fnoffset; | |
7941 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
7942 | ||
7943 | if ((insn & 0xffff0000) == addis_2_12) | |
7944 | { | |
7945 | /* Skip ELFv2 global entry code. */ | |
7946 | entry += 8; | |
7947 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
7948 | } | |
7949 | ||
7950 | unsigned char *pinsn = entry; | |
7951 | bool ok = false; | |
7952 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
7953 | if (insn == ld_private_ss) | |
7954 | { | |
7955 | int32_t allocate = 0; | |
7956 | while (1) | |
7957 | { | |
7958 | pinsn += 4; | |
7959 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
7960 | if ((insn & 0xffff0000) == addis_12_1) | |
7961 | allocate += (insn & 0xffff) << 16; | |
7962 | else if ((insn & 0xffff0000) == addi_12_1 | |
7963 | || (insn & 0xffff0000) == addi_12_12) | |
7964 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
7965 | else if (insn != nop) | |
7966 | break; | |
7967 | } | |
7968 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
7969 | { | |
7970 | int extra = parameters->options().split_stack_adjust_size(); | |
7971 | allocate -= extra; | |
7972 | if (allocate >= 0 || extra < 0) | |
7973 | { | |
7974 | object->error(_("split-stack stack size overflow at " | |
7975 | "section %u offset %0zx"), | |
7976 | shndx, static_cast<size_t>(fnoffset)); | |
7977 | return; | |
7978 | } | |
7979 | pinsn = entry + 4; | |
7980 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
7981 | if (insn != addis_12_1) | |
7982 | { | |
7983 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7984 | pinsn += 4; | |
7985 | insn = addi_12_12 | (allocate & 0xffff); | |
7986 | if (insn != addi_12_12) | |
7987 | { | |
7988 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7989 | pinsn += 4; | |
7990 | } | |
7991 | } | |
7992 | else | |
7993 | { | |
7994 | insn = addi_12_1 | (allocate & 0xffff); | |
7995 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
7996 | pinsn += 4; | |
7997 | } | |
7998 | if (pinsn != entry + 12) | |
7999 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
8000 | ||
8001 | ok = true; | |
8002 | } | |
8003 | } | |
8004 | ||
8005 | if (!ok) | |
8006 | { | |
8007 | if (!object->has_no_split_stack()) | |
8008 | object->error(_("failed to match split-stack sequence at " | |
8009 | "section %u offset %0zx"), | |
8010 | shndx, static_cast<size_t>(fnoffset)); | |
8011 | } | |
8012 | } | |
8013 | ||
42cacb20 DE |
8014 | // Scan relocations for a section. |
8015 | ||
8016 | template<int size, bool big_endian> | |
8017 | void | |
8018 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
8019 | Symbol_table* symtab, |
8020 | Layout* layout, | |
8021 | Sized_relobj_file<size, big_endian>* object, | |
8022 | unsigned int data_shndx, | |
8023 | unsigned int sh_type, | |
8024 | const unsigned char* prelocs, | |
8025 | size_t reloc_count, | |
8026 | Output_section* output_section, | |
8027 | bool needs_special_offset_handling, | |
8028 | size_t local_symbol_count, | |
8029 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
8030 | { |
8031 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
8032 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
8033 | Classify_reloc; | |
42cacb20 | 8034 | |
7ee7ff70 AM |
8035 | if (!this->plt_localentry0_init_) |
8036 | { | |
8037 | bool plt_localentry0 = false; | |
8038 | if (size == 64 | |
8039 | && this->abiversion() >= 2) | |
8040 | { | |
8041 | if (parameters->options().user_set_plt_localentry()) | |
8042 | plt_localentry0 = parameters->options().plt_localentry(); | |
d44c746a AM |
8043 | if (plt_localentry0 |
8044 | && symtab->lookup("GLIBC_2.26", NULL) == NULL) | |
8045 | gold_warning(_("--plt-localentry is especially dangerous without " | |
8046 | "ld.so support to detect ABI violations")); | |
7ee7ff70 AM |
8047 | } |
8048 | this->plt_localentry0_ = plt_localentry0; | |
8049 | this->plt_localentry0_init_ = true; | |
8050 | } | |
8051 | ||
42cacb20 DE |
8052 | if (sh_type == elfcpp::SHT_REL) |
8053 | { | |
8054 | gold_error(_("%s: unsupported REL reloc section"), | |
8055 | object->name().c_str()); | |
8056 | return; | |
8057 | } | |
8058 | ||
4d625b70 | 8059 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
8060 | symtab, |
8061 | layout, | |
8062 | this, | |
8063 | object, | |
8064 | data_shndx, | |
8065 | prelocs, | |
8066 | reloc_count, | |
8067 | output_section, | |
8068 | needs_special_offset_handling, | |
8069 | local_symbol_count, | |
8070 | plocal_symbols); | |
8071 | } | |
8072 | ||
ec4dbad3 AM |
8073 | // Functor class for processing the global symbol table. |
8074 | // Removes symbols defined on discarded opd entries. | |
8075 | ||
8076 | template<bool big_endian> | |
8077 | class Global_symbol_visitor_opd | |
8078 | { | |
8079 | public: | |
8080 | Global_symbol_visitor_opd() | |
8081 | { } | |
8082 | ||
8083 | void | |
8084 | operator()(Sized_symbol<64>* sym) | |
8085 | { | |
8086 | if (sym->has_symtab_index() | |
8087 | || sym->source() != Symbol::FROM_OBJECT | |
8088 | || !sym->in_real_elf()) | |
8089 | return; | |
8090 | ||
6c77229c AM |
8091 | if (sym->object()->is_dynamic()) |
8092 | return; | |
8093 | ||
ec4dbad3 AM |
8094 | Powerpc_relobj<64, big_endian>* symobj |
8095 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 8096 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
8097 | return; |
8098 | ||
8099 | bool is_ordinary; | |
8100 | unsigned int shndx = sym->shndx(&is_ordinary); | |
8101 | if (shndx == symobj->opd_shndx() | |
8102 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
8103 | { |
8104 | sym->set_undefined(); | |
e3ee8ed4 | 8105 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
8106 | sym->set_is_defined_in_discarded_section(); |
8107 | sym->set_symtab_index(-1U); | |
8108 | } | |
ec4dbad3 AM |
8109 | } |
8110 | }; | |
8111 | ||
f3a0ed29 AM |
8112 | template<int size, bool big_endian> |
8113 | void | |
8114 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
8115 | Layout* layout, | |
8116 | Symbol_table* symtab) | |
8117 | { | |
8118 | if (size == 64) | |
8119 | { | |
d49044c7 AM |
8120 | Output_data_save_res<size, big_endian>* savres |
8121 | = new Output_data_save_res<size, big_endian>(symtab); | |
8122 | this->savres_section_ = savres; | |
f3a0ed29 AM |
8123 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
8124 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
8125 | savres, ORDER_TEXT, false); | |
8126 | } | |
8127 | } | |
8128 | ||
d8f5a274 AM |
8129 | // Sort linker created .got section first (for the header), then input |
8130 | // sections belonging to files using small model code. | |
8131 | ||
8132 | template<bool big_endian> | |
8133 | class Sort_toc_sections | |
8134 | { | |
8135 | public: | |
8136 | bool | |
8137 | operator()(const Output_section::Input_section& is1, | |
8138 | const Output_section::Input_section& is2) const | |
8139 | { | |
8140 | if (!is1.is_input_section() && is2.is_input_section()) | |
8141 | return true; | |
8142 | bool small1 | |
8143 | = (is1.is_input_section() | |
8144 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
8145 | ->has_small_toc_reloc())); | |
8146 | bool small2 | |
8147 | = (is2.is_input_section() | |
8148 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
8149 | ->has_small_toc_reloc())); | |
8150 | return small1 && !small2; | |
8151 | } | |
8152 | }; | |
8153 | ||
42cacb20 DE |
8154 | // Finalize the sections. |
8155 | ||
8156 | template<int size, bool big_endian> | |
8157 | void | |
d5b40221 DK |
8158 | Target_powerpc<size, big_endian>::do_finalize_sections( |
8159 | Layout* layout, | |
f59f41f3 | 8160 | const Input_objects*, |
ec4dbad3 | 8161 | Symbol_table* symtab) |
42cacb20 | 8162 | { |
c9824451 AM |
8163 | if (parameters->doing_static_link()) |
8164 | { | |
8165 | // At least some versions of glibc elf-init.o have a strong | |
8166 | // reference to __rela_iplt marker syms. A weak ref would be | |
8167 | // better.. | |
8168 | if (this->iplt_ != NULL) | |
8169 | { | |
8170 | Reloc_section* rel = this->iplt_->rel_plt(); | |
8171 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
8172 | Symbol_table::PREDEFINED, rel, 0, 0, | |
8173 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8174 | elfcpp::STV_HIDDEN, 0, false, true); | |
8175 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
8176 | Symbol_table::PREDEFINED, rel, 0, 0, | |
8177 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8178 | elfcpp::STV_HIDDEN, 0, true, true); | |
8179 | } | |
8180 | else | |
8181 | { | |
8182 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
8183 | Symbol_table::PREDEFINED, 0, 0, | |
8184 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8185 | elfcpp::STV_HIDDEN, 0, true, false); | |
8186 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
8187 | Symbol_table::PREDEFINED, 0, 0, | |
8188 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
8189 | elfcpp::STV_HIDDEN, 0, true, false); | |
8190 | } | |
8191 | } | |
8192 | ||
ec4dbad3 AM |
8193 | if (size == 64) |
8194 | { | |
8195 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
8196 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
8197 | |
8198 | if (!parameters->options().relocatable()) | |
8199 | { | |
8200 | this->define_save_restore_funcs(layout, symtab); | |
8201 | ||
8202 | // Annoyingly, we need to make these sections now whether or | |
8203 | // not we need them. If we delay until do_relax then we | |
8204 | // need to mess with the relaxation machinery checkpointing. | |
8205 | this->got_section(symtab, layout); | |
8206 | this->make_brlt_section(layout); | |
d8f5a274 AM |
8207 | |
8208 | if (parameters->options().toc_sort()) | |
8209 | { | |
8210 | Output_section* os = this->got_->output_section(); | |
8211 | if (os != NULL && os->input_sections().size() > 1) | |
8212 | std::stable_sort(os->input_sections().begin(), | |
8213 | os->input_sections().end(), | |
8214 | Sort_toc_sections<big_endian>()); | |
8215 | } | |
ec661b9d | 8216 | } |
ec4dbad3 AM |
8217 | } |
8218 | ||
42cacb20 | 8219 | // Fill in some more dynamic tags. |
c9269dff | 8220 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 8221 | if (odyn != NULL) |
cf43a2fe | 8222 | { |
c9824451 AM |
8223 | const Reloc_section* rel_plt = (this->plt_ == NULL |
8224 | ? NULL | |
8225 | : this->plt_->rel_plt()); | |
8226 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
8227 | this->rela_dyn_, true, size == 32); | |
8228 | ||
8229 | if (size == 32) | |
dd93cd0a | 8230 | { |
c9824451 AM |
8231 | if (this->got_ != NULL) |
8232 | { | |
8233 | this->got_->finalize_data_size(); | |
8234 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
8235 | this->got_, this->got_->g_o_t()); | |
8236 | } | |
34e0882b AM |
8237 | if (this->has_tls_get_addr_opt_) |
8238 | odyn->add_constant(elfcpp::DT_PPC_OPT, elfcpp::PPC_OPT_TLS); | |
dd93cd0a | 8239 | } |
c9824451 | 8240 | else |
dd93cd0a | 8241 | { |
c9824451 AM |
8242 | if (this->glink_ != NULL) |
8243 | { | |
8244 | this->glink_->finalize_data_size(); | |
8245 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
8246 | this->glink_, | |
9e390558 | 8247 | (this->glink_->pltresolve_size() |
c9824451 AM |
8248 | - 32)); |
8249 | } | |
34e0882b | 8250 | if (this->has_localentry0_ || this->has_tls_get_addr_opt_) |
7ee7ff70 | 8251 | odyn->add_constant(elfcpp::DT_PPC64_OPT, |
34e0882b AM |
8252 | ((this->has_localentry0_ |
8253 | ? elfcpp::PPC64_OPT_LOCALENTRY : 0) | |
8254 | | (this->has_tls_get_addr_opt_ | |
8255 | ? elfcpp::PPC64_OPT_TLS : 0))); | |
dd93cd0a | 8256 | } |
c9269dff | 8257 | } |
cf43a2fe | 8258 | |
42cacb20 DE |
8259 | // Emit any relocs we saved in an attempt to avoid generating COPY |
8260 | // relocs. | |
8261 | if (this->copy_relocs_.any_saved_relocs()) | |
8262 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
8263 | } | |
8264 | ||
5edad15d AM |
8265 | // Emit any saved relocs, and mark toc entries using any of these |
8266 | // relocs as not optimizable. | |
aba6bc71 | 8267 | |
5edad15d AM |
8268 | template<int sh_type, int size, bool big_endian> |
8269 | void | |
8270 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
8271 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 8272 | { |
5edad15d AM |
8273 | if (size == 64 |
8274 | && parameters->options().toc_optimize()) | |
8275 | { | |
8276 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
8277 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
8278 | p != this->entries_.end(); | |
8279 | ++p) | |
8280 | { | |
8281 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
8282 | entry = *p; | |
8283 | ||
8284 | // If the symbol is no longer defined in a dynamic object, | |
8285 | // then we emitted a COPY relocation. If it is still | |
8286 | // dynamic then we'll need dynamic relocations and thus | |
8287 | // can't optimize toc entries. | |
8288 | if (entry.sym_->is_from_dynobj()) | |
8289 | { | |
8290 | Powerpc_relobj<size, big_endian>* ppc_object | |
8291 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
8292 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
8293 | ppc_object->set_no_toc_opt(entry.address_); | |
8294 | } | |
8295 | } | |
8296 | } | |
8297 | ||
8298 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
8299 | } |
8300 | ||
3ea0a085 AM |
8301 | // Return the value to use for a branch relocation. |
8302 | ||
8303 | template<int size, bool big_endian> | |
1611bc4a | 8304 | bool |
3ea0a085 | 8305 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 8306 | const Symbol_table* symtab, |
3ea0a085 AM |
8307 | const Sized_symbol<size>* gsym, |
8308 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 8309 | Address *value, |
3ea0a085 AM |
8310 | unsigned int *dest_shndx) |
8311 | { | |
9055360d AM |
8312 | if (size == 32 || this->abiversion() >= 2) |
8313 | gold_unreachable(); | |
3ea0a085 | 8314 | *dest_shndx = 0; |
3ea0a085 AM |
8315 | |
8316 | // If the symbol is defined in an opd section, ie. is a function | |
8317 | // descriptor, use the function descriptor code entry address | |
8318 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 8319 | if (gsym != NULL |
0e123f69 AM |
8320 | && (gsym->source() != Symbol::FROM_OBJECT |
8321 | || gsym->object()->is_dynamic())) | |
1611bc4a | 8322 | return true; |
3ea0a085 AM |
8323 | if (gsym != NULL) |
8324 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8325 | unsigned int shndx = symobj->opd_shndx(); | |
8326 | if (shndx == 0) | |
1611bc4a | 8327 | return true; |
3ea0a085 | 8328 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 8329 | if (opd_addr == invalid_address) |
1611bc4a | 8330 | return true; |
c6905c28 | 8331 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 8332 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
8333 | { |
8334 | Address sec_off; | |
1611bc4a | 8335 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
8336 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
8337 | { | |
8338 | Section_id folded | |
8339 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
8340 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
8341 | *dest_shndx = folded.second; | |
8342 | } | |
3ea0a085 | 8343 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
8344 | if (sec_addr == invalid_address) |
8345 | return false; | |
8346 | ||
3ea0a085 | 8347 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 8348 | *value = sec_addr + sec_off; |
3ea0a085 | 8349 | } |
1611bc4a | 8350 | return true; |
3ea0a085 AM |
8351 | } |
8352 | ||
42cacb20 DE |
8353 | // Perform a relocation. |
8354 | ||
8355 | template<int size, bool big_endian> | |
8356 | inline bool | |
8357 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 8358 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 8359 | unsigned int, |
d83ce4e3 AM |
8360 | Target_powerpc* target, |
8361 | Output_section* os, | |
8362 | size_t relnum, | |
91a65d2f | 8363 | const unsigned char* preloc, |
d83ce4e3 AM |
8364 | const Sized_symbol<size>* gsym, |
8365 | const Symbol_value<size>* psymval, | |
8366 | unsigned char* view, | |
c9269dff AM |
8367 | Address address, |
8368 | section_size_type view_size) | |
42cacb20 | 8369 | { |
0e804863 ILT |
8370 | if (view == NULL) |
8371 | return true; | |
8372 | ||
34e0882b AM |
8373 | if (target->replace_tls_get_addr(gsym)) |
8374 | gsym = static_cast<const Sized_symbol<size>*>(target->tls_get_addr_opt()); | |
8375 | ||
91a65d2f AM |
8376 | const elfcpp::Rela<size, big_endian> rela(preloc); |
8377 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
34e0882b | 8378 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) |
dd93cd0a | 8379 | { |
e3deeb9c AM |
8380 | case Track_tls::NOT_EXPECTED: |
8381 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8382 | _("__tls_get_addr call lacks marker reloc")); | |
8383 | break; | |
8384 | case Track_tls::EXPECTED: | |
8385 | // We have already complained. | |
8386 | break; | |
8387 | case Track_tls::SKIP: | |
8388 | return true; | |
8389 | case Track_tls::NORMAL: | |
8390 | break; | |
dd93cd0a | 8391 | } |
dd93cd0a | 8392 | |
42cacb20 | 8393 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 8394 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
0e123f69 | 8395 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
dcfc7dd4 AM |
8396 | // Offset from start of insn to d-field reloc. |
8397 | const int d_offset = big_endian ? 2 : 0; | |
8398 | ||
3ea0a085 AM |
8399 | Powerpc_relobj<size, big_endian>* const object |
8400 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 8401 | Address value = 0; |
0cfb0717 | 8402 | bool has_stub_value = false; |
7ee7ff70 | 8403 | bool localentry0 = false; |
e5d5f5ed | 8404 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
b3ccdeb5 | 8405 | if ((gsym != NULL |
88b8e639 | 8406 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
b3ccdeb5 AM |
8407 | : object->local_has_plt_offset(r_sym)) |
8408 | && (!psymval->is_ifunc_symbol() | |
9055360d | 8409 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 8410 | { |
9055360d AM |
8411 | if (size == 64 |
8412 | && gsym != NULL | |
8413 | && target->abiversion() >= 2 | |
8414 | && !parameters->options().output_is_position_independent() | |
8415 | && !is_branch_reloc(r_type)) | |
ec661b9d | 8416 | { |
faa2211d AM |
8417 | Address off = target->glink_section()->find_global_entry(gsym); |
8418 | if (off != invalid_address) | |
6ec65f28 AM |
8419 | { |
8420 | value = target->glink_section()->global_entry_address() + off; | |
8421 | has_stub_value = true; | |
8422 | } | |
ec661b9d | 8423 | } |
c9824451 | 8424 | else |
9055360d | 8425 | { |
64b5d6d7 AM |
8426 | Stub_table<size, big_endian>* stub_table = NULL; |
8427 | if (target->stub_tables().size() == 1) | |
8428 | stub_table = target->stub_tables()[0]; | |
8429 | if (stub_table == NULL | |
8430 | && !(size == 32 | |
8431 | && gsym != NULL | |
8432 | && !parameters->options().output_is_position_independent() | |
8433 | && !is_branch_reloc(r_type))) | |
8434 | stub_table = object->stub_table(relinfo->data_shndx); | |
9055360d AM |
8435 | if (stub_table == NULL) |
8436 | { | |
64b5d6d7 AM |
8437 | // This is a ref from a data section to an ifunc symbol, |
8438 | // or a non-branch reloc for which we always want to use | |
8439 | // one set of stubs for resolving function addresses. | |
9055360d AM |
8440 | if (target->stub_tables().size() != 0) |
8441 | stub_table = target->stub_tables()[0]; | |
8442 | } | |
faa2211d AM |
8443 | if (stub_table != NULL) |
8444 | { | |
7e57d19e | 8445 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 8446 | if (gsym != NULL) |
7e57d19e | 8447 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
8448 | rela.get_r_addend()); |
8449 | else | |
7e57d19e | 8450 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 8451 | rela.get_r_addend()); |
7e57d19e | 8452 | if (ent != NULL) |
faa2211d | 8453 | { |
7e57d19e AM |
8454 | value = stub_table->stub_address() + ent->off_; |
8455 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
8456 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
8457 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
8458 | if (size == 64 | |
8459 | && ent->r2save_ | |
8460 | && relnum + 1 < reloc_count) | |
8461 | { | |
8462 | Reltype next_rela(preloc + reloc_size); | |
8463 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
8464 | == elfcpp::R_PPC64_TOCSAVE | |
8465 | && next_rela.get_r_offset() == rela.get_r_offset() + 4) | |
8466 | value += 4; | |
8467 | } | |
7ee7ff70 | 8468 | localentry0 = ent->localentry0_; |
faa2211d AM |
8469 | has_stub_value = true; |
8470 | } | |
8471 | } | |
9055360d | 8472 | } |
faa2211d AM |
8473 | // We don't care too much about bogus debug references to |
8474 | // non-local functions, but otherwise there had better be a plt | |
8475 | // call stub or global entry stub as appropriate. | |
8476 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 8477 | } |
cf43a2fe AM |
8478 | |
8479 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
8480 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
8481 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
8482 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
8483 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
8484 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 8485 | { |
cf43a2fe AM |
8486 | if (gsym != NULL) |
8487 | { | |
8488 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
8489 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
8490 | } | |
8491 | else | |
8492 | { | |
cf43a2fe AM |
8493 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
8494 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
8495 | } | |
dd93cd0a | 8496 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
8497 | } |
8498 | else if (r_type == elfcpp::R_PPC64_TOC) | |
8499 | { | |
c9269dff | 8500 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 8501 | + object->toc_base_offset()); |
cf43a2fe AM |
8502 | } |
8503 | else if (gsym != NULL | |
8504 | && (r_type == elfcpp::R_POWERPC_REL24 | |
8505 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 8506 | && has_stub_value) |
cf43a2fe | 8507 | { |
c9269dff AM |
8508 | if (size == 64) |
8509 | { | |
8510 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
8511 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
34e0882b AM |
8512 | bool can_plt_call = localentry0 || target->is_tls_get_addr_opt(gsym); |
8513 | if (!can_plt_call && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 8514 | { |
3ea0a085 | 8515 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 8516 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
8517 | if ((insn & 1) != 0 |
8518 | && (insn2 == nop | |
8519 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 8520 | { |
b4f7960d AM |
8521 | elfcpp::Swap<32, big_endian>:: |
8522 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
8523 | can_plt_call = true; |
8524 | } | |
8525 | } | |
8526 | if (!can_plt_call) | |
3ea0a085 AM |
8527 | { |
8528 | // If we don't have a branch and link followed by a nop, | |
8529 | // we can't go via the plt because there is no place to | |
8530 | // put a toc restoring instruction. | |
8531 | // Unless we know we won't be returning. | |
8532 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
8533 | can_plt_call = true; | |
8534 | } | |
8535 | if (!can_plt_call) | |
8536 | { | |
ba8ca3e7 AM |
8537 | // g++ as of 20130507 emits self-calls without a |
8538 | // following nop. This is arguably wrong since we have | |
8539 | // conflicting information. On the one hand a global | |
8540 | // symbol and on the other a local call sequence, but | |
8541 | // don't error for this special case. | |
8542 | // It isn't possible to cheaply verify we have exactly | |
8543 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 8544 | bool ok = false; |
c9824451 | 8545 | Address code = value; |
3ea0a085 AM |
8546 | if (gsym->source() == Symbol::FROM_OBJECT |
8547 | && gsym->object() == object) | |
8548 | { | |
9055360d AM |
8549 | unsigned int dest_shndx = 0; |
8550 | if (target->abiversion() < 2) | |
8551 | { | |
8552 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
8553 | code = psymval->value(object, addend); |
8554 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
8555 | &code, &dest_shndx); | |
9055360d | 8556 | } |
3ea0a085 AM |
8557 | bool is_ordinary; |
8558 | if (dest_shndx == 0) | |
8559 | dest_shndx = gsym->shndx(&is_ordinary); | |
8560 | ok = dest_shndx == relinfo->data_shndx; | |
8561 | } | |
8562 | if (!ok) | |
c9824451 AM |
8563 | { |
8564 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8565 | _("call lacks nop, can't restore toc; " | |
8566 | "recompile with -fPIC")); | |
8567 | value = code; | |
8568 | } | |
3ea0a085 | 8569 | } |
c9269dff | 8570 | } |
cf43a2fe | 8571 | } |
dd93cd0a AM |
8572 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
8573 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8574 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8575 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8576 | { | |
8577 | // First instruction of a global dynamic sequence, arg setup insn. | |
8578 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8579 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8580 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
8581 | if (tls_type == tls::TLSOPT_NONE) | |
8582 | got_type = GOT_TYPE_TLSGD; | |
8583 | else if (tls_type == tls::TLSOPT_TO_IE) | |
8584 | got_type = GOT_TYPE_TPREL; | |
8585 | if (got_type != GOT_TYPE_STANDARD) | |
8586 | { | |
8587 | if (gsym != NULL) | |
8588 | { | |
8589 | gold_assert(gsym->has_got_offset(got_type)); | |
8590 | value = gsym->got_offset(got_type); | |
8591 | } | |
8592 | else | |
8593 | { | |
dd93cd0a AM |
8594 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
8595 | value = object->local_got_offset(r_sym, got_type); | |
8596 | } | |
8597 | value -= target->got_section()->got_base_offset(object); | |
8598 | } | |
8599 | if (tls_type == tls::TLSOPT_TO_IE) | |
8600 | { | |
8601 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8602 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8603 | { | |
dcfc7dd4 | 8604 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8605 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8606 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
8607 | if (size == 32) | |
8608 | insn |= 32 << 26; // lwz | |
8609 | else | |
8610 | insn |= 58 << 26; // ld | |
8611 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8612 | } | |
8613 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8614 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8615 | } | |
8616 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8617 | { | |
8618 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8619 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8620 | { | |
dcfc7dd4 | 8621 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8622 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8623 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8624 | if (size == 32) |
0f81d3f0 AM |
8625 | insn |= addis_0_2; |
8626 | else | |
8627 | insn |= addis_0_13; | |
dd93cd0a AM |
8628 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8629 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8630 | value = psymval->value(object, rela.get_r_addend()); | |
8631 | } | |
8632 | else | |
8633 | { | |
dcfc7dd4 | 8634 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8635 | Insn insn = nop; |
8636 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8637 | r_type = elfcpp::R_POWERPC_NONE; | |
8638 | } | |
8639 | } | |
8640 | } | |
8641 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8642 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8643 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8644 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8645 | { | |
8646 | // First instruction of a local dynamic sequence, arg setup insn. | |
8647 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8648 | if (tls_type == tls::TLSOPT_NONE) | |
8649 | { | |
8650 | value = target->tlsld_got_offset(); | |
8651 | value -= target->got_section()->got_base_offset(object); | |
8652 | } | |
8653 | else | |
8654 | { | |
8655 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8656 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8657 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8658 | { | |
dcfc7dd4 | 8659 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
8660 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8661 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 8662 | if (size == 32) |
0f81d3f0 AM |
8663 | insn |= addis_0_2; |
8664 | else | |
8665 | insn |= addis_0_13; | |
dd93cd0a AM |
8666 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
8667 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 8668 | value = dtp_offset; |
dd93cd0a AM |
8669 | } |
8670 | else | |
8671 | { | |
dcfc7dd4 | 8672 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8673 | Insn insn = nop; |
8674 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8675 | r_type = elfcpp::R_POWERPC_NONE; | |
8676 | } | |
8677 | } | |
8678 | } | |
8679 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
8680 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
8681 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
8682 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
8683 | { | |
8684 | // Accesses relative to a local dynamic sequence address, | |
8685 | // no optimisation here. | |
8686 | if (gsym != NULL) | |
8687 | { | |
8688 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
8689 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
8690 | } | |
8691 | else | |
8692 | { | |
dd93cd0a AM |
8693 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
8694 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
8695 | } | |
8696 | value -= target->got_section()->got_base_offset(object); | |
8697 | } | |
8698 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8699 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8700 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8701 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8702 | { | |
8703 | // First instruction of initial exec sequence. | |
8704 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8705 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8706 | if (tls_type == tls::TLSOPT_NONE) | |
8707 | { | |
8708 | if (gsym != NULL) | |
8709 | { | |
8710 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
8711 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
8712 | } | |
8713 | else | |
8714 | { | |
dd93cd0a AM |
8715 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
8716 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
8717 | } | |
8718 | value -= target->got_section()->got_base_offset(object); | |
8719 | } | |
8720 | else | |
8721 | { | |
8722 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
8723 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8724 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8725 | { | |
dcfc7dd4 | 8726 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8727 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
8728 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
8729 | if (size == 32) | |
8730 | insn |= addis_0_2; | |
8731 | else | |
8732 | insn |= addis_0_13; | |
8733 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8734 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8735 | value = psymval->value(object, rela.get_r_addend()); | |
8736 | } | |
8737 | else | |
8738 | { | |
dcfc7dd4 | 8739 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
8740 | Insn insn = nop; |
8741 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8742 | r_type = elfcpp::R_POWERPC_NONE; | |
8743 | } | |
8744 | } | |
8745 | } | |
8746 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8747 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8748 | { | |
8749 | // Second instruction of a global dynamic sequence, | |
8750 | // the __tls_get_addr call | |
e3deeb9c | 8751 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8752 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
8753 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8754 | if (tls_type != tls::TLSOPT_NONE) | |
8755 | { | |
8756 | if (tls_type == tls::TLSOPT_TO_IE) | |
8757 | { | |
8758 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8759 | Insn insn = add_3_3_13; | |
8760 | if (size == 32) | |
8761 | insn = add_3_3_2; | |
8762 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8763 | r_type = elfcpp::R_POWERPC_NONE; | |
8764 | } | |
8765 | else | |
8766 | { | |
8767 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8768 | Insn insn = addi_3_3; | |
8769 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8770 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8771 | view += d_offset; |
dd93cd0a AM |
8772 | value = psymval->value(object, rela.get_r_addend()); |
8773 | } | |
e3deeb9c | 8774 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
8775 | } |
8776 | } | |
8777 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8778 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8779 | { | |
8780 | // Second instruction of a local dynamic sequence, | |
8781 | // the __tls_get_addr call | |
e3deeb9c | 8782 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
8783 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
8784 | if (tls_type == tls::TLSOPT_TO_LE) | |
8785 | { | |
8786 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8787 | Insn insn = addi_3_3; | |
8788 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 8789 | this->skip_next_tls_get_addr_call(); |
dd93cd0a | 8790 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
dcfc7dd4 | 8791 | view += d_offset; |
7404fe1b | 8792 | value = dtp_offset; |
dd93cd0a AM |
8793 | } |
8794 | } | |
8795 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8796 | { | |
8797 | // Second instruction of an initial exec sequence | |
8798 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8799 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8800 | if (tls_type == tls::TLSOPT_TO_LE) | |
8801 | { | |
8802 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8803 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8804 | unsigned int reg = size == 32 ? 2 : 13; | |
8805 | insn = at_tls_transform(insn, reg); | |
8806 | gold_assert(insn != 0); | |
8807 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8808 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8809 | view += d_offset; |
dd93cd0a AM |
8810 | value = psymval->value(object, rela.get_r_addend()); |
8811 | } | |
8812 | } | |
0cfb0717 | 8813 | else if (!has_stub_value) |
cf43a2fe | 8814 | { |
dd93cd0a | 8815 | Address addend = 0; |
cbcb23fa | 8816 | if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) |
cf43a2fe | 8817 | addend = rela.get_r_addend(); |
c9824451 | 8818 | value = psymval->value(object, addend); |
dd93cd0a | 8819 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
8820 | { |
8821 | if (target->abiversion() >= 2) | |
8822 | { | |
8823 | if (gsym != NULL) | |
8824 | value += object->ppc64_local_entry_offset(gsym); | |
8825 | else | |
8826 | value += object->ppc64_local_entry_offset(r_sym); | |
8827 | } | |
8828 | else | |
1611bc4a AM |
8829 | { |
8830 | unsigned int dest_shndx; | |
8831 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
8832 | &value, &dest_shndx); | |
8833 | } | |
9055360d | 8834 | } |
cbcb23fa | 8835 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
8836 | if (max_branch_offset != 0 |
8837 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
8838 | { | |
8839 | Stub_table<size, big_endian>* stub_table | |
8840 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
8841 | if (stub_table != NULL) |
8842 | { | |
8843 | Address off = stub_table->find_long_branch_entry(object, value); | |
8844 | if (off != invalid_address) | |
0cfb0717 AM |
8845 | { |
8846 | value = (stub_table->stub_address() + stub_table->plt_size() | |
8847 | + off); | |
8848 | has_stub_value = true; | |
8849 | } | |
0cfdc767 | 8850 | } |
ec661b9d | 8851 | } |
42cacb20 DE |
8852 | } |
8853 | ||
42cacb20 DE |
8854 | switch (r_type) |
8855 | { | |
dd93cd0a AM |
8856 | case elfcpp::R_PPC64_REL64: |
8857 | case elfcpp::R_POWERPC_REL32: | |
8858 | case elfcpp::R_POWERPC_REL24: | |
8859 | case elfcpp::R_PPC_PLTREL24: | |
8860 | case elfcpp::R_PPC_LOCAL24PC: | |
8861 | case elfcpp::R_POWERPC_REL16: | |
8862 | case elfcpp::R_POWERPC_REL16_LO: | |
8863 | case elfcpp::R_POWERPC_REL16_HI: | |
8864 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 8865 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a AM |
8866 | case elfcpp::R_POWERPC_REL14: |
8867 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8868 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
8869 | value -= address; | |
8870 | break; | |
8871 | ||
42cacb20 DE |
8872 | case elfcpp::R_PPC64_TOC16: |
8873 | case elfcpp::R_PPC64_TOC16_LO: | |
8874 | case elfcpp::R_PPC64_TOC16_HI: | |
8875 | case elfcpp::R_PPC64_TOC16_HA: | |
8876 | case elfcpp::R_PPC64_TOC16_DS: | |
8877 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 8878 | // Subtract the TOC base address. |
c9269dff | 8879 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 8880 | + object->toc_base_offset()); |
42cacb20 DE |
8881 | break; |
8882 | ||
cf43a2fe AM |
8883 | case elfcpp::R_POWERPC_SECTOFF: |
8884 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
8885 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
8886 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
8887 | case elfcpp::R_PPC64_SECTOFF_DS: | |
8888 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8889 | if (os != NULL) | |
8890 | value -= os->address(); | |
42cacb20 DE |
8891 | break; |
8892 | ||
dd93cd0a AM |
8893 | case elfcpp::R_PPC64_TPREL16_DS: |
8894 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
8895 | case elfcpp::R_PPC64_TPREL16_HIGH: |
8896 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8897 | if (size != 64) |
f9c6b907 | 8898 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 8899 | break; |
d8e90251 | 8900 | // Fall through. |
dd93cd0a AM |
8901 | case elfcpp::R_POWERPC_TPREL16: |
8902 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8903 | case elfcpp::R_POWERPC_TPREL16_HI: | |
8904 | case elfcpp::R_POWERPC_TPREL16_HA: | |
8905 | case elfcpp::R_POWERPC_TPREL: | |
8906 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8907 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8908 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8909 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8910 | // tls symbol values are relative to tls_segment()->vaddr() | |
8911 | value -= tp_offset; | |
8912 | break; | |
8913 | ||
8914 | case elfcpp::R_PPC64_DTPREL16_DS: | |
8915 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
8916 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8917 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8918 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8919 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
8920 | if (size != 64) | |
8921 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
8922 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
8923 | break; | |
d8e90251 | 8924 | // Fall through. |
dd93cd0a AM |
8925 | case elfcpp::R_POWERPC_DTPREL16: |
8926 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8927 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8928 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
8929 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
8930 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8931 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
8932 | // tls symbol values are relative to tls_segment()->vaddr() |
8933 | value -= dtp_offset; | |
8934 | break; | |
8935 | ||
45965137 AM |
8936 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
8937 | if (gsym != NULL) | |
8938 | value += object->ppc64_local_entry_offset(gsym); | |
8939 | else | |
8940 | value += object->ppc64_local_entry_offset(r_sym); | |
8941 | break; | |
8942 | ||
42cacb20 DE |
8943 | default: |
8944 | break; | |
8945 | } | |
8946 | ||
dd93cd0a | 8947 | Insn branch_bit = 0; |
42cacb20 DE |
8948 | switch (r_type) |
8949 | { | |
dd93cd0a AM |
8950 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
8951 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8952 | branch_bit = 1 << 21; | |
d8e90251 | 8953 | // Fall through. |
dd93cd0a AM |
8954 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
8955 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
8956 | { | |
8957 | Insn* iview = reinterpret_cast<Insn*>(view); | |
8958 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8959 | insn &= ~(1 << 21); | |
8960 | insn |= branch_bit; | |
8961 | if (this->is_isa_v2) | |
8962 | { | |
8963 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
8964 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
8965 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
8966 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
8967 | insn |= 0x02 << 21; | |
8968 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
8969 | insn |= 0x08 << 21; | |
8970 | else | |
8971 | break; | |
8972 | } | |
8973 | else | |
8974 | { | |
8975 | // Invert 'y' bit if not the default. | |
8976 | if (static_cast<Signed_address>(value) < 0) | |
8977 | insn ^= 1 << 21; | |
8978 | } | |
8979 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
8980 | } | |
8981 | break; | |
8982 | ||
8983 | default: | |
8984 | break; | |
8985 | } | |
8986 | ||
aba6bc71 AM |
8987 | if (size == 64) |
8988 | { | |
aba6bc71 AM |
8989 | switch (r_type) |
8990 | { | |
8991 | default: | |
8992 | break; | |
8993 | ||
5edad15d AM |
8994 | // Multi-instruction sequences that access the GOT/TOC can |
8995 | // be optimized, eg. | |
8996 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
8997 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
8998 | // and | |
8999 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
9000 | // to nop; addi rb,r2,x@toc; | |
9001 | // FIXME: the @got sequence shown above is not yet | |
9002 | // optimized. Note that gcc as of 2017-01-07 doesn't use | |
9003 | // the ELF @got relocs except for TLS, instead using the | |
9004 | // PowerOpen variant of a compiler managed GOT (called TOC). | |
9005 | // The PowerOpen TOC sequence equivalent to the first | |
9006 | // example is optimized. | |
aba6bc71 AM |
9007 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
9008 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9009 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9010 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9011 | case elfcpp::R_POWERPC_GOT16_HA: | |
9012 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 9013 | if (parameters->options().toc_optimize()) |
aba6bc71 | 9014 | { |
dcfc7dd4 | 9015 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 9016 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
9017 | if (r_type == elfcpp::R_PPC64_TOC16_HA |
9018 | && object->make_toc_relative(target, &value)) | |
9019 | { | |
9020 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
9021 | == ((15u << 26) | (2 << 16))); | |
9022 | } | |
9023 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
9024 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
9025 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
9026 | { |
9027 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9028 | return true; | |
9029 | } | |
9030 | } | |
9031 | break; | |
9032 | ||
9033 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
9034 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9035 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9036 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9037 | case elfcpp::R_POWERPC_GOT16_LO: | |
9038 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9039 | case elfcpp::R_PPC64_TOC16_LO: | |
9040 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 9041 | if (parameters->options().toc_optimize()) |
aba6bc71 | 9042 | { |
dcfc7dd4 | 9043 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 9044 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d AM |
9045 | bool changed = false; |
9046 | if (r_type == elfcpp::R_PPC64_TOC16_LO_DS | |
9047 | && object->make_toc_relative(target, &value)) | |
9048 | { | |
9049 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
9050 | insn ^= (14u << 26) ^ (58u << 26); | |
9051 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
9052 | changed = true; | |
9053 | } | |
9054 | if (ok_lo_toc_insn(insn, r_type) | |
9055 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
9056 | { |
9057 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
9058 | { | |
9059 | // Transform addic to addi when we change reg. | |
9060 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
9061 | insn |= (14u << 26) | (2 << 16); | |
9062 | } | |
9063 | else | |
9064 | { | |
9065 | insn &= ~(0x1f << 16); | |
9066 | insn |= 2 << 16; | |
9067 | } | |
5edad15d | 9068 | changed = true; |
aba6bc71 | 9069 | } |
5edad15d AM |
9070 | if (changed) |
9071 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
9072 | } |
9073 | break; | |
549dba71 | 9074 | |
9a23f96e AM |
9075 | case elfcpp::R_POWERPC_TPREL16_HA: |
9076 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
9077 | { | |
9078 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
9079 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9080 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9081 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
9082 | ; | |
9083 | else | |
9084 | { | |
9085 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9086 | return true; | |
9087 | } | |
9088 | } | |
9089 | break; | |
9090 | ||
9091 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9092 | if (size == 32) | |
9093 | // R_PPC_TLSGD, R_PPC_TLSLD | |
9094 | break; | |
9095 | // Fall through. | |
9096 | case elfcpp::R_POWERPC_TPREL16_LO: | |
9097 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
9098 | { | |
9099 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
9100 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9101 | insn &= ~(0x1f << 16); | |
9102 | insn |= (size == 32 ? 2 : 13) << 16; | |
9103 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
9104 | } | |
9105 | break; | |
9106 | ||
549dba71 AM |
9107 | case elfcpp::R_PPC64_ENTRY: |
9108 | value = (target->got_section()->output_section()->address() | |
9109 | + object->toc_base_offset()); | |
9110 | if (value + 0x80008000 <= 0xffffffff | |
9111 | && !parameters->options().output_is_position_independent()) | |
9112 | { | |
9113 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9114 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9115 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
9116 | ||
9117 | if ((insn1 & ~0xfffc) == ld_2_12 | |
9118 | && insn2 == add_2_2_12) | |
9119 | { | |
9120 | insn1 = lis_2 + ha(value); | |
9121 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
9122 | insn2 = addi_2_2 + l(value); | |
9123 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
9124 | return true; | |
9125 | } | |
9126 | } | |
9127 | else | |
9128 | { | |
9129 | value -= address; | |
9130 | if (value + 0x80008000 <= 0xffffffff) | |
9131 | { | |
9132 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9133 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9134 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
9135 | ||
9136 | if ((insn1 & ~0xfffc) == ld_2_12 | |
9137 | && insn2 == add_2_2_12) | |
9138 | { | |
9139 | insn1 = addis_2_12 + ha(value); | |
9140 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
9141 | insn2 = addi_2_2 + l(value); | |
9142 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
9143 | return true; | |
9144 | } | |
9145 | } | |
9146 | } | |
9147 | break; | |
e3a7574e AM |
9148 | |
9149 | case elfcpp::R_POWERPC_REL16_LO: | |
9150 | // If we are generating a non-PIC executable, edit | |
9151 | // 0: addis 2,12,.TOC.-0b@ha | |
9152 | // addi 2,2,.TOC.-0b@l | |
9153 | // used by ELFv2 global entry points to set up r2, to | |
9154 | // lis 2,.TOC.@ha | |
9155 | // addi 2,2,.TOC.@l | |
9156 | // if .TOC. is in range. */ | |
9157 | if (value + address - 4 + 0x80008000 <= 0xffffffff | |
9158 | && relnum != 0 | |
9159 | && preloc != NULL | |
9160 | && target->abiversion() >= 2 | |
9161 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 9162 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
9163 | && gsym != NULL |
9164 | && strcmp(gsym->name(), ".TOC.") == 0) | |
9165 | { | |
0e123f69 | 9166 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
9167 | Reltype prev_rela(preloc - reloc_size); |
9168 | if ((prev_rela.get_r_info() | |
9169 | == elfcpp::elf_r_info<size>(r_sym, | |
9170 | elfcpp::R_POWERPC_REL16_HA)) | |
9171 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
9172 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
9173 | { | |
dcfc7dd4 | 9174 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
9175 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
9176 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
9177 | ||
9178 | if ((insn1 & 0xffff0000) == addis_2_12 | |
9179 | && (insn2 & 0xffff0000) == addi_2_2) | |
9180 | { | |
9181 | insn1 = lis_2 + ha(value + address - 4); | |
9182 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
9183 | insn2 = addi_2_2 + l(value + address - 4); | |
9184 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
9185 | if (relinfo->rr) | |
9186 | { | |
9187 | relinfo->rr->set_strategy(relnum - 1, | |
9188 | Relocatable_relocs::RELOC_SPECIAL); | |
9189 | relinfo->rr->set_strategy(relnum, | |
9190 | Relocatable_relocs::RELOC_SPECIAL); | |
9191 | } | |
9192 | return true; | |
9193 | } | |
9194 | } | |
9195 | } | |
9196 | break; | |
aba6bc71 AM |
9197 | } |
9198 | } | |
9199 | ||
f4baf0d4 | 9200 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 9201 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
9202 | switch (r_type) |
9203 | { | |
9204 | case elfcpp::R_POWERPC_ADDR32: | |
9205 | case elfcpp::R_POWERPC_UADDR32: | |
9206 | if (size == 64) | |
f4baf0d4 | 9207 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
9208 | break; |
9209 | ||
9210 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 9211 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 9212 | if (size == 64) |
f4baf0d4 | 9213 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
9214 | break; |
9215 | ||
dd93cd0a | 9216 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 9217 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
9218 | break; |
9219 | ||
b80eed39 AM |
9220 | case elfcpp::R_POWERPC_ADDR16: |
9221 | // We really should have three separate relocations, | |
9222 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
9223 | // and one for insns with 16-bit unsigned fields. | |
9224 | overflow = Reloc::CHECK_BITFIELD; | |
9225 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
9226 | overflow = Reloc::CHECK_LOW_INSN; | |
9227 | break; | |
9228 | ||
f9c6b907 AM |
9229 | case elfcpp::R_POWERPC_ADDR16_HI: |
9230 | case elfcpp::R_POWERPC_ADDR16_HA: | |
9231 | case elfcpp::R_POWERPC_GOT16_HI: | |
9232 | case elfcpp::R_POWERPC_GOT16_HA: | |
9233 | case elfcpp::R_POWERPC_PLT16_HI: | |
9234 | case elfcpp::R_POWERPC_PLT16_HA: | |
9235 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
9236 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
9237 | case elfcpp::R_PPC64_TOC16_HI: | |
9238 | case elfcpp::R_PPC64_TOC16_HA: | |
9239 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
9240 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
9241 | case elfcpp::R_POWERPC_TPREL16_HI: | |
9242 | case elfcpp::R_POWERPC_TPREL16_HA: | |
9243 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
9244 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9245 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
9246 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9247 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9248 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9249 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9250 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9251 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9252 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9253 | case elfcpp::R_POWERPC_REL16_HI: | |
9254 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
9255 | if (size != 32) |
9256 | overflow = Reloc::CHECK_HIGH_INSN; | |
9257 | break; | |
9258 | ||
dd93cd0a AM |
9259 | case elfcpp::R_POWERPC_REL16: |
9260 | case elfcpp::R_PPC64_TOC16: | |
9261 | case elfcpp::R_POWERPC_GOT16: | |
9262 | case elfcpp::R_POWERPC_SECTOFF: | |
9263 | case elfcpp::R_POWERPC_TPREL16: | |
9264 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
9265 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
9266 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
9267 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
9268 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
9269 | overflow = Reloc::CHECK_LOW_INSN; | |
9270 | break; | |
9271 | ||
9272 | case elfcpp::R_POWERPC_ADDR24: | |
9273 | case elfcpp::R_POWERPC_ADDR14: | |
9274 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
9275 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
9276 | case elfcpp::R_PPC64_ADDR16_DS: | |
9277 | case elfcpp::R_POWERPC_REL24: | |
9278 | case elfcpp::R_PPC_PLTREL24: | |
9279 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
9280 | case elfcpp::R_PPC64_TPREL16_DS: |
9281 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9282 | case elfcpp::R_PPC64_TOC16_DS: | |
9283 | case elfcpp::R_PPC64_GOT16_DS: | |
9284 | case elfcpp::R_PPC64_SECTOFF_DS: | |
9285 | case elfcpp::R_POWERPC_REL14: | |
9286 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9287 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 9288 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 9289 | break; |
dd93cd0a | 9290 | } |
42cacb20 | 9291 | |
dcfc7dd4 | 9292 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
9293 | Insn insn = 0; |
9294 | ||
b80eed39 AM |
9295 | if (overflow == Reloc::CHECK_LOW_INSN |
9296 | || overflow == Reloc::CHECK_HIGH_INSN) | |
9297 | { | |
a680de9a | 9298 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 9299 | |
a47622ac AM |
9300 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
9301 | overflow = Reloc::CHECK_BITFIELD; | |
9302 | else if (overflow == Reloc::CHECK_LOW_INSN | |
9303 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
9304 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
9305 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
9306 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
9307 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
9308 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 9309 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
9310 | else |
9311 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
9312 | } |
9313 | ||
a680de9a | 9314 | bool maybe_dq_reloc = false; |
3ea0a085 | 9315 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 9316 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
9317 | switch (r_type) |
9318 | { | |
9319 | case elfcpp::R_POWERPC_NONE: | |
9320 | case elfcpp::R_POWERPC_TLS: | |
9321 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
9322 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
42cacb20 DE |
9323 | break; |
9324 | ||
9325 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 9326 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 9327 | case elfcpp::R_PPC64_TOC: |
45965137 | 9328 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
9329 | Reloc::addr64(view, value); |
9330 | break; | |
9331 | ||
9332 | case elfcpp::R_POWERPC_TPREL: | |
9333 | case elfcpp::R_POWERPC_DTPREL: | |
9334 | if (size == 64) | |
9335 | Reloc::addr64(view, value); | |
9336 | else | |
3ea0a085 | 9337 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
9338 | break; |
9339 | ||
9340 | case elfcpp::R_PPC64_UADDR64: | |
9341 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
9342 | break; |
9343 | ||
9344 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 9345 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
9346 | break; |
9347 | ||
acc276d8 | 9348 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 9349 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 9350 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
9351 | break; |
9352 | ||
9353 | case elfcpp::R_POWERPC_ADDR24: | |
9354 | case elfcpp::R_POWERPC_REL24: | |
9355 | case elfcpp::R_PPC_PLTREL24: | |
9356 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 9357 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
9358 | break; |
9359 | ||
dd93cd0a AM |
9360 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
9361 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
9362 | case elfcpp::R_POWERPC_GOT_TPREL16: |
9363 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
9364 | if (size == 64) |
9365 | { | |
ec86f434 | 9366 | // On ppc64 these are all ds form |
a680de9a | 9367 | maybe_dq_reloc = true; |
dd93cd0a AM |
9368 | break; |
9369 | } | |
c25aa1e1 | 9370 | // Fall through. |
cf43a2fe | 9371 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 9372 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 9373 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 9374 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 9375 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
9376 | case elfcpp::R_POWERPC_TPREL16: |
9377 | case elfcpp::R_POWERPC_DTPREL16: | |
9378 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
9379 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 9380 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 9381 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 9382 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 9383 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 9384 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
9385 | case elfcpp::R_POWERPC_TPREL16_LO: |
9386 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
9387 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9388 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
9389 | if (size == 64) |
9390 | status = Reloc::addr16(view, value, overflow); | |
9391 | else | |
9392 | maybe_dq_reloc = true; | |
dd93cd0a AM |
9393 | break; |
9394 | ||
9395 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 9396 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
9397 | break; |
9398 | ||
f9c6b907 AM |
9399 | case elfcpp::R_PPC64_ADDR16_HIGH: |
9400 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9401 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
9402 | if (size == 32) | |
9403 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
9404 | goto unsupp; | |
d8e90251 | 9405 | // Fall through. |
cf43a2fe | 9406 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 9407 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 9408 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 9409 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 9410 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
9411 | case elfcpp::R_POWERPC_TPREL16_HI: |
9412 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
9413 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
9414 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9415 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9416 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9417 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
9418 | break; |
9419 | ||
f9c6b907 AM |
9420 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
9421 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9422 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
9423 | if (size == 32) | |
9424 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
9425 | goto unsupp; | |
d8e90251 | 9426 | // Fall through. |
cf43a2fe | 9427 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 9428 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 9429 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 9430 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 9431 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
9432 | case elfcpp::R_POWERPC_TPREL16_HA: |
9433 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
9434 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9435 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9436 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9437 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9438 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
9439 | break; |
9440 | ||
a680de9a PB |
9441 | case elfcpp::R_POWERPC_REL16DX_HA: |
9442 | status = Reloc::addr16dx_ha(view, value, overflow); | |
9443 | break; | |
9444 | ||
dd93cd0a AM |
9445 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
9446 | if (size == 32) | |
9447 | // R_PPC_EMB_NADDR16_LO | |
9448 | goto unsupp; | |
d8e90251 | 9449 | // Fall through. |
dd93cd0a AM |
9450 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
9451 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9452 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
9453 | break; |
9454 | ||
dd93cd0a AM |
9455 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
9456 | if (size == 32) | |
9457 | // R_PPC_EMB_NADDR16_HI | |
9458 | goto unsupp; | |
d8e90251 | 9459 | // Fall through. |
dd93cd0a AM |
9460 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
9461 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9462 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
9463 | break; |
9464 | ||
dd93cd0a AM |
9465 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
9466 | if (size == 32) | |
9467 | // R_PPC_EMB_NADDR16_HA | |
9468 | goto unsupp; | |
d8e90251 | 9469 | // Fall through. |
dd93cd0a AM |
9470 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
9471 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9472 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
9473 | break; |
9474 | ||
dd93cd0a AM |
9475 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
9476 | if (size == 32) | |
9477 | // R_PPC_EMB_SDAI16 | |
9478 | goto unsupp; | |
d8e90251 | 9479 | // Fall through. |
dd93cd0a AM |
9480 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
9481 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9482 | Reloc::addr16_ha3(view, value); | |
9483 | break; | |
9484 | ||
9485 | case elfcpp::R_PPC64_DTPREL16_DS: | |
9486 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
9487 | if (size == 32) | |
9488 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
9489 | goto unsupp; | |
d8e90251 | 9490 | // Fall through. |
dd93cd0a AM |
9491 | case elfcpp::R_PPC64_TPREL16_DS: |
9492 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9493 | if (size == 32) | |
9494 | // R_PPC_TLSGD, R_PPC_TLSLD | |
9495 | break; | |
d8e90251 | 9496 | // Fall through. |
cf43a2fe AM |
9497 | case elfcpp::R_PPC64_ADDR16_DS: |
9498 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
9499 | case elfcpp::R_PPC64_TOC16_DS: |
9500 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
9501 | case elfcpp::R_PPC64_GOT16_DS: |
9502 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9503 | case elfcpp::R_PPC64_SECTOFF_DS: | |
9504 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 9505 | maybe_dq_reloc = true; |
dd93cd0a AM |
9506 | break; |
9507 | ||
9508 | case elfcpp::R_POWERPC_ADDR14: | |
9509 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
9510 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
9511 | case elfcpp::R_POWERPC_REL14: | |
9512 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
9513 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 9514 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
9515 | break; |
9516 | ||
9517 | case elfcpp::R_POWERPC_COPY: | |
9518 | case elfcpp::R_POWERPC_GLOB_DAT: | |
9519 | case elfcpp::R_POWERPC_JMP_SLOT: | |
9520 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 9521 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
9522 | case elfcpp::R_PPC64_JMP_IREL: |
9523 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
9524 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9525 | _("unexpected reloc %u in object file"), | |
9526 | r_type); | |
9527 | break; | |
9528 | ||
7e57d19e | 9529 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 9530 | if (size == 32) |
7e57d19e | 9531 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
9532 | goto unsupp; |
9533 | else | |
9534 | { | |
7e57d19e AM |
9535 | Symbol_location loc; |
9536 | loc.object = relinfo->object; | |
9537 | loc.shndx = relinfo->data_shndx; | |
9538 | loc.offset = rela.get_r_offset(); | |
9539 | Tocsave_loc::const_iterator p = target->tocsave_loc().find(loc); | |
9540 | if (p != target->tocsave_loc().end()) | |
9541 | { | |
9542 | // If we've generated plt calls using this tocsave, then | |
9543 | // the nop needs to be changed to save r2. | |
9544 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9545 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
9546 | elfcpp::Swap<32, big_endian>:: | |
9547 | writeval(iview, std_2_1 + target->stk_toc()); | |
9548 | } | |
dd93cd0a AM |
9549 | } |
9550 | break; | |
9551 | ||
9552 | case elfcpp::R_PPC_EMB_SDA2I16: | |
9553 | case elfcpp::R_PPC_EMB_SDA2REL: | |
9554 | if (size == 32) | |
9555 | goto unsupp; | |
9556 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
9557 | break; |
9558 | ||
dd93cd0a AM |
9559 | case elfcpp::R_POWERPC_PLT32: |
9560 | case elfcpp::R_POWERPC_PLTREL32: | |
9561 | case elfcpp::R_POWERPC_PLT16_LO: | |
9562 | case elfcpp::R_POWERPC_PLT16_HI: | |
9563 | case elfcpp::R_POWERPC_PLT16_HA: | |
9564 | case elfcpp::R_PPC_SDAREL16: | |
9565 | case elfcpp::R_POWERPC_ADDR30: | |
9566 | case elfcpp::R_PPC64_PLT64: | |
9567 | case elfcpp::R_PPC64_PLTREL64: | |
9568 | case elfcpp::R_PPC64_PLTGOT16: | |
9569 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
9570 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
9571 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
9572 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
9573 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
9574 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
9575 | case elfcpp::R_PPC_EMB_RELSDA: |
9576 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 9577 | default: |
dd93cd0a | 9578 | unsupp: |
42cacb20 DE |
9579 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
9580 | _("unsupported reloc %u"), | |
9581 | r_type); | |
9582 | break; | |
9583 | } | |
a680de9a PB |
9584 | |
9585 | if (maybe_dq_reloc) | |
9586 | { | |
9587 | if (insn == 0) | |
9588 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
9589 | ||
9590 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
9591 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
9592 | && (insn & 3) == 1)) | |
9593 | status = Reloc::addr16_dq(view, value, overflow); | |
9594 | else if (size == 64 | |
9595 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
9596 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
9597 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
9598 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
9599 | status = Reloc::addr16_ds(view, value, overflow); | |
9600 | else | |
9601 | status = Reloc::addr16(view, value, overflow); | |
9602 | } | |
9603 | ||
0cfb0717 | 9604 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
9605 | && (has_stub_value |
9606 | || !(gsym != NULL | |
282c9750 | 9607 | && gsym->is_undefined() |
3ffaac20 | 9608 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
9609 | { |
9610 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
9611 | _("relocation overflow")); | |
9612 | if (has_stub_value) | |
9613 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
9614 | } | |
42cacb20 DE |
9615 | |
9616 | return true; | |
9617 | } | |
9618 | ||
42cacb20 DE |
9619 | // Relocate section data. |
9620 | ||
9621 | template<int size, bool big_endian> | |
9622 | void | |
9623 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
9624 | const Relocate_info<size, big_endian>* relinfo, |
9625 | unsigned int sh_type, | |
9626 | const unsigned char* prelocs, | |
9627 | size_t reloc_count, | |
9628 | Output_section* output_section, | |
9629 | bool needs_special_offset_handling, | |
9630 | unsigned char* view, | |
c9269dff | 9631 | Address address, |
d83ce4e3 AM |
9632 | section_size_type view_size, |
9633 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
9634 | { |
9635 | typedef Target_powerpc<size, big_endian> Powerpc; | |
9636 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
9637 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
9638 | Powerpc_comdat_behavior; | |
4d625b70 CC |
9639 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9640 | Classify_reloc; | |
42cacb20 DE |
9641 | |
9642 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9643 | ||
4d625b70 CC |
9644 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
9645 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
9646 | relinfo, |
9647 | this, | |
9648 | prelocs, | |
9649 | reloc_count, | |
9650 | output_section, | |
9651 | needs_special_offset_handling, | |
9652 | view, | |
9653 | address, | |
364c7fa5 ILT |
9654 | view_size, |
9655 | reloc_symbol_changes); | |
42cacb20 DE |
9656 | } |
9657 | ||
4d625b70 | 9658 | template<int size, bool big_endian> |
cf43a2fe | 9659 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 9660 | { |
cf43a2fe | 9661 | public: |
0e123f69 AM |
9662 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
9663 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
9664 | static const int sh_type = elfcpp::SHT_RELA; |
9665 | ||
9666 | // Return the symbol referred to by the relocation. | |
9667 | static inline unsigned int | |
9668 | get_r_sym(const Reltype* reloc) | |
9669 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
9670 | ||
9671 | // Return the type of the relocation. | |
9672 | static inline unsigned int | |
9673 | get_r_type(const Reltype* reloc) | |
9674 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
9675 | ||
cf43a2fe AM |
9676 | // Return the strategy to use for a local symbol which is not a |
9677 | // section symbol, given the relocation type. | |
9678 | inline Relocatable_relocs::Reloc_strategy | |
9679 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
9680 | { | |
9681 | if (r_type == 0 && r_sym == 0) | |
9682 | return Relocatable_relocs::RELOC_DISCARD; | |
9683 | return Relocatable_relocs::RELOC_COPY; | |
9684 | } | |
9685 | ||
9686 | // Return the strategy to use for a local symbol which is a section | |
9687 | // symbol, given the relocation type. | |
9688 | inline Relocatable_relocs::Reloc_strategy | |
9689 | local_section_strategy(unsigned int, Relobj*) | |
9690 | { | |
9691 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
9692 | } | |
9693 | ||
9694 | // Return the strategy to use for a global symbol, given the | |
9695 | // relocation type, the object, and the symbol index. | |
9696 | inline Relocatable_relocs::Reloc_strategy | |
9697 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
9698 | { | |
9699 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
9700 | return Relocatable_relocs::RELOC_SPECIAL; | |
9701 | return Relocatable_relocs::RELOC_COPY; | |
9702 | } | |
9703 | }; | |
42cacb20 DE |
9704 | |
9705 | // Scan the relocs during a relocatable link. | |
9706 | ||
9707 | template<int size, bool big_endian> | |
9708 | void | |
9709 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
9710 | Symbol_table* symtab, |
9711 | Layout* layout, | |
9712 | Sized_relobj_file<size, big_endian>* object, | |
9713 | unsigned int data_shndx, | |
9714 | unsigned int sh_type, | |
9715 | const unsigned char* prelocs, | |
9716 | size_t reloc_count, | |
9717 | Output_section* output_section, | |
9718 | bool needs_special_offset_handling, | |
9719 | size_t local_symbol_count, | |
9720 | const unsigned char* plocal_symbols, | |
9721 | Relocatable_relocs* rr) | |
42cacb20 | 9722 | { |
4d625b70 CC |
9723 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
9724 | ||
42cacb20 DE |
9725 | gold_assert(sh_type == elfcpp::SHT_RELA); |
9726 | ||
4d625b70 | 9727 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
9728 | symtab, |
9729 | layout, | |
9730 | object, | |
9731 | data_shndx, | |
9732 | prelocs, | |
9733 | reloc_count, | |
9734 | output_section, | |
9735 | needs_special_offset_handling, | |
9736 | local_symbol_count, | |
9737 | plocal_symbols, | |
9738 | rr); | |
9739 | } | |
9740 | ||
4d625b70 CC |
9741 | // Scan the relocs for --emit-relocs. |
9742 | ||
9743 | template<int size, bool big_endian> | |
9744 | void | |
9745 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
9746 | Symbol_table* symtab, | |
9747 | Layout* layout, | |
9748 | Sized_relobj_file<size, big_endian>* object, | |
9749 | unsigned int data_shndx, | |
9750 | unsigned int sh_type, | |
9751 | const unsigned char* prelocs, | |
9752 | size_t reloc_count, | |
9753 | Output_section* output_section, | |
9754 | bool needs_special_offset_handling, | |
9755 | size_t local_symbol_count, | |
9756 | const unsigned char* plocal_syms, | |
9757 | Relocatable_relocs* rr) | |
9758 | { | |
9759 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
9760 | Classify_reloc; | |
9761 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
9762 | Emit_relocs_strategy; | |
9763 | ||
9764 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9765 | ||
9766 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
9767 | symtab, | |
9768 | layout, | |
9769 | object, | |
9770 | data_shndx, | |
9771 | prelocs, | |
9772 | reloc_count, | |
9773 | output_section, | |
9774 | needs_special_offset_handling, | |
9775 | local_symbol_count, | |
9776 | plocal_syms, | |
9777 | rr); | |
9778 | } | |
9779 | ||
7404fe1b | 9780 | // Emit relocations for a section. |
dd93cd0a AM |
9781 | // This is a modified version of the function by the same name in |
9782 | // target-reloc.h. Using relocate_special_relocatable for | |
9783 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
9784 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
9785 | |
9786 | template<int size, bool big_endian> | |
9787 | void | |
7404fe1b | 9788 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
9789 | const Relocate_info<size, big_endian>* relinfo, |
9790 | unsigned int sh_type, | |
9791 | const unsigned char* prelocs, | |
9792 | size_t reloc_count, | |
9793 | Output_section* output_section, | |
62fe925a | 9794 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 9795 | unsigned char*, |
dd93cd0a | 9796 | Address view_address, |
cf43a2fe | 9797 | section_size_type, |
42cacb20 DE |
9798 | unsigned char* reloc_view, |
9799 | section_size_type reloc_view_size) | |
9800 | { | |
9801 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
9802 | ||
0e123f69 AM |
9803 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
9804 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
9805 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
9806 | // Offset from start of insn to d-field reloc. |
9807 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
9808 | |
9809 | Powerpc_relobj<size, big_endian>* const object | |
9810 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
9811 | const unsigned int local_count = object->local_symbol_count(); | |
9812 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 9813 | Address got2_addend = 0; |
cf43a2fe | 9814 | if (got2_shndx != 0) |
c9269dff AM |
9815 | { |
9816 | got2_addend = object->get_output_section_offset(got2_shndx); | |
9817 | gold_assert(got2_addend != invalid_address); | |
9818 | } | |
cf43a2fe | 9819 | |
033bfb73 CC |
9820 | const bool relocatable = parameters->options().relocatable(); |
9821 | ||
cf43a2fe | 9822 | unsigned char* pwrite = reloc_view; |
7404fe1b | 9823 | bool zap_next = false; |
cf43a2fe AM |
9824 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
9825 | { | |
91a65d2f | 9826 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
9827 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
9828 | continue; | |
9829 | ||
9830 | Reltype reloc(prelocs); | |
9831 | Reltype_write reloc_write(pwrite); | |
9832 | ||
7404fe1b | 9833 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 9834 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
9835 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
9836 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
9837 | const unsigned int orig_r_sym = r_sym; | |
9838 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
9839 | = reloc.get_r_addend(); | |
9840 | const Symbol* gsym = NULL; | |
9841 | ||
9842 | if (zap_next) | |
9843 | { | |
9844 | // We could arrange to discard these and other relocs for | |
9845 | // tls optimised sequences in the strategy methods, but for | |
9846 | // now do as BFD ld does. | |
9847 | r_type = elfcpp::R_POWERPC_NONE; | |
9848 | zap_next = false; | |
9849 | } | |
cf43a2fe AM |
9850 | |
9851 | // Get the new symbol index. | |
9215b98b | 9852 | Output_section* os = NULL; |
cf43a2fe AM |
9853 | if (r_sym < local_count) |
9854 | { | |
9855 | switch (strategy) | |
9856 | { | |
9857 | case Relocatable_relocs::RELOC_COPY: | |
9858 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 9859 | if (r_sym != 0) |
dd93cd0a | 9860 | { |
7404fe1b AM |
9861 | r_sym = object->symtab_index(r_sym); |
9862 | gold_assert(r_sym != -1U); | |
dd93cd0a | 9863 | } |
cf43a2fe AM |
9864 | break; |
9865 | ||
9866 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
9867 | { | |
9868 | // We are adjusting a section symbol. We need to find | |
9869 | // the symbol table index of the section symbol for | |
9870 | // the output section corresponding to input section | |
9871 | // in which this symbol is defined. | |
9872 | gold_assert(r_sym < local_count); | |
9873 | bool is_ordinary; | |
9874 | unsigned int shndx = | |
9875 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
9876 | gold_assert(is_ordinary); | |
9215b98b | 9877 | os = object->output_section(shndx); |
cf43a2fe AM |
9878 | gold_assert(os != NULL); |
9879 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 9880 | r_sym = os->symtab_index(); |
cf43a2fe AM |
9881 | } |
9882 | break; | |
9883 | ||
9884 | default: | |
9885 | gold_unreachable(); | |
9886 | } | |
9887 | } | |
9888 | else | |
9889 | { | |
7404fe1b | 9890 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
9891 | gold_assert(gsym != NULL); |
9892 | if (gsym->is_forwarder()) | |
9893 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
9894 | ||
9895 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 9896 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
9897 | } |
9898 | ||
9899 | // Get the new offset--the location in the output section where | |
9900 | // this relocation should be applied. | |
cf43a2fe | 9901 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 9902 | offset += offset_in_output_section; |
cf43a2fe AM |
9903 | else |
9904 | { | |
c9269dff AM |
9905 | section_offset_type sot_offset = |
9906 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 9907 | section_offset_type new_sot_offset = |
c9269dff AM |
9908 | output_section->output_offset(object, relinfo->data_shndx, |
9909 | sot_offset); | |
cf43a2fe | 9910 | gold_assert(new_sot_offset != -1); |
7404fe1b | 9911 | offset = new_sot_offset; |
cf43a2fe AM |
9912 | } |
9913 | ||
dd93cd0a AM |
9914 | // In an object file, r_offset is an offset within the section. |
9915 | // In an executable or dynamic object, generated by | |
9916 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 9917 | if (!relocatable) |
dd93cd0a | 9918 | { |
7404fe1b | 9919 | offset += view_address; |
dd93cd0a | 9920 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 9921 | offset -= offset_in_output_section; |
dd93cd0a AM |
9922 | } |
9923 | ||
cf43a2fe | 9924 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
9925 | if (strategy == Relocatable_relocs::RELOC_COPY) |
9926 | ; | |
9927 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
9928 | { | |
7404fe1b | 9929 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
033bfb73 CC |
9930 | addend = psymval->value(object, addend); |
9931 | // In a relocatable link, the symbol value is relative to | |
9932 | // the start of the output section. For a non-relocatable | |
9933 | // link, we need to adjust the addend. | |
9934 | if (!relocatable) | |
9935 | { | |
9936 | gold_assert(os != NULL); | |
9937 | addend -= os->address(); | |
9938 | } | |
cf43a2fe AM |
9939 | } |
9940 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
9941 | { | |
e3a7574e AM |
9942 | if (size == 32) |
9943 | { | |
9944 | if (addend >= 32768) | |
9945 | addend += got2_addend; | |
9946 | } | |
9947 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
9948 | { | |
9949 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 9950 | addend -= d_offset; |
e3a7574e AM |
9951 | } |
9952 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
9953 | { | |
9954 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 9955 | addend -= d_offset + 4; |
e3a7574e | 9956 | } |
cf43a2fe AM |
9957 | } |
9958 | else | |
9959 | gold_unreachable(); | |
9960 | ||
033bfb73 | 9961 | if (!relocatable) |
7404fe1b AM |
9962 | { |
9963 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
9964 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
9965 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
9966 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
9967 | { | |
9968 | // First instruction of a global dynamic sequence, | |
9969 | // arg setup insn. | |
9970 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
9971 | switch (this->optimize_tls_gd(final)) | |
9972 | { | |
9973 | case tls::TLSOPT_TO_IE: | |
9974 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
9975 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
9976 | break; | |
9977 | case tls::TLSOPT_TO_LE: | |
9978 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
9979 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
9980 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
9981 | else | |
9982 | { | |
9983 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 9984 | offset -= d_offset; |
7404fe1b AM |
9985 | } |
9986 | break; | |
9987 | default: | |
9988 | break; | |
9989 | } | |
9990 | } | |
9991 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
9992 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
9993 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
9994 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
9995 | { | |
9996 | // First instruction of a local dynamic sequence, | |
9997 | // arg setup insn. | |
9998 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
9999 | { | |
10000 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10001 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
10002 | { | |
10003 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10004 | const Output_section* os = relinfo->layout->tls_segment() | |
10005 | ->first_section(); | |
10006 | gold_assert(os != NULL); | |
10007 | gold_assert(os->needs_symtab_index()); | |
10008 | r_sym = os->symtab_index(); | |
10009 | addend = dtp_offset; | |
10010 | } | |
10011 | else | |
10012 | { | |
10013 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 10014 | offset -= d_offset; |
7404fe1b AM |
10015 | } |
10016 | } | |
10017 | } | |
10018 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10019 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
10020 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
10021 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
10022 | { | |
10023 | // First instruction of initial exec sequence. | |
10024 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10025 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
10026 | { | |
10027 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10028 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
10029 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10030 | else | |
10031 | { | |
10032 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 10033 | offset -= d_offset; |
7404fe1b AM |
10034 | } |
10035 | } | |
10036 | } | |
10037 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
10038 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
10039 | { | |
10040 | // Second instruction of a global dynamic sequence, | |
10041 | // the __tls_get_addr call | |
10042 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10043 | switch (this->optimize_tls_gd(final)) | |
10044 | { | |
10045 | case tls::TLSOPT_TO_IE: | |
10046 | r_type = elfcpp::R_POWERPC_NONE; | |
10047 | zap_next = true; | |
10048 | break; | |
10049 | case tls::TLSOPT_TO_LE: | |
10050 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10051 | offset += d_offset; |
7404fe1b AM |
10052 | zap_next = true; |
10053 | break; | |
10054 | default: | |
10055 | break; | |
10056 | } | |
10057 | } | |
10058 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
10059 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
10060 | { | |
10061 | // Second instruction of a local dynamic sequence, | |
10062 | // the __tls_get_addr call | |
10063 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
10064 | { | |
10065 | const Output_section* os = relinfo->layout->tls_segment() | |
10066 | ->first_section(); | |
10067 | gold_assert(os != NULL); | |
10068 | gold_assert(os->needs_symtab_index()); | |
10069 | r_sym = os->symtab_index(); | |
10070 | addend = dtp_offset; | |
10071 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10072 | offset += d_offset; |
7404fe1b AM |
10073 | zap_next = true; |
10074 | } | |
10075 | } | |
10076 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
10077 | { | |
10078 | // Second instruction of an initial exec sequence | |
10079 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10080 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
10081 | { | |
10082 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10083 | offset += d_offset; |
7404fe1b AM |
10084 | } |
10085 | } | |
10086 | } | |
10087 | ||
10088 | reloc_write.put_r_offset(offset); | |
10089 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
10090 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
10091 | |
10092 | pwrite += reloc_size; | |
10093 | } | |
10094 | ||
10095 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
10096 | == reloc_view_size); | |
42cacb20 DE |
10097 | } |
10098 | ||
ec661b9d | 10099 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
10100 | // treatment. This is how we support equality comparisons of function |
10101 | // pointers across shared library boundaries, as described in the | |
10102 | // processor specific ABI supplement. | |
10103 | ||
10104 | template<int size, bool big_endian> | |
10105 | uint64_t | |
10106 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
10107 | { | |
cf43a2fe AM |
10108 | if (size == 32) |
10109 | { | |
10110 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
10111 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10112 | p != this->stub_tables_.end(); | |
10113 | ++p) | |
10114 | { | |
7e57d19e AM |
10115 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10116 | = (*p)->find_plt_call_entry(gsym); | |
10117 | if (ent != NULL) | |
10118 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10119 | } |
c9824451 | 10120 | } |
9055360d AM |
10121 | else if (this->abiversion() >= 2) |
10122 | { | |
faa2211d AM |
10123 | Address off = this->glink_section()->find_global_entry(gsym); |
10124 | if (off != invalid_address) | |
9055360d AM |
10125 | return this->glink_section()->global_entry_address() + off; |
10126 | } | |
ec661b9d | 10127 | gold_unreachable(); |
c9824451 AM |
10128 | } |
10129 | ||
10130 | // Return the PLT address to use for a local symbol. | |
10131 | template<int size, bool big_endian> | |
10132 | uint64_t | |
10133 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
10134 | const Relobj* object, | |
10135 | unsigned int symndx) const | |
10136 | { | |
10137 | if (size == 32) | |
10138 | { | |
10139 | const Sized_relobj<size, big_endian>* relobj | |
10140 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
10141 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10142 | p != this->stub_tables_.end(); | |
10143 | ++p) | |
10144 | { | |
7e57d19e AM |
10145 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10146 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
10147 | if (ent != NULL) | |
10148 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10149 | } |
c9824451 | 10150 | } |
ec661b9d | 10151 | gold_unreachable(); |
c9824451 AM |
10152 | } |
10153 | ||
10154 | // Return the PLT address to use for a global symbol. | |
10155 | template<int size, bool big_endian> | |
10156 | uint64_t | |
10157 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
10158 | const Symbol* gsym) const | |
10159 | { | |
10160 | if (size == 32) | |
10161 | { | |
ec661b9d AM |
10162 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
10163 | p != this->stub_tables_.end(); | |
10164 | ++p) | |
10165 | { | |
7e57d19e AM |
10166 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
10167 | = (*p)->find_plt_call_entry(gsym); | |
10168 | if (ent != NULL) | |
10169 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 10170 | } |
cf43a2fe | 10171 | } |
9055360d AM |
10172 | else if (this->abiversion() >= 2) |
10173 | { | |
faa2211d AM |
10174 | Address off = this->glink_section()->find_global_entry(gsym); |
10175 | if (off != invalid_address) | |
9055360d AM |
10176 | return this->glink_section()->global_entry_address() + off; |
10177 | } | |
ec661b9d | 10178 | gold_unreachable(); |
42cacb20 DE |
10179 | } |
10180 | ||
bd73a62d AM |
10181 | // Return the offset to use for the GOT_INDX'th got entry which is |
10182 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
10183 | template<int size, bool big_endian> | |
10184 | int64_t | |
10185 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
10186 | const Relobj* object, | |
10187 | unsigned int symndx, | |
10188 | unsigned int got_indx) const | |
10189 | { | |
10190 | const Powerpc_relobj<size, big_endian>* ppc_object | |
10191 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
10192 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
10193 | { | |
10194 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
10195 | got_type <= GOT_TYPE_TPREL; | |
10196 | got_type = Got_type(got_type + 1)) | |
10197 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
10198 | { | |
10199 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
10200 | if (got_type == GOT_TYPE_TLSGD) | |
10201 | off += size / 8; | |
10202 | if (off == got_indx * (size / 8)) | |
10203 | { | |
10204 | if (got_type == GOT_TYPE_TPREL) | |
10205 | return -tp_offset; | |
10206 | else | |
10207 | return -dtp_offset; | |
10208 | } | |
10209 | } | |
10210 | } | |
10211 | gold_unreachable(); | |
10212 | } | |
10213 | ||
10214 | // Return the offset to use for the GOT_INDX'th got entry which is | |
10215 | // for global tls symbol GSYM. | |
10216 | template<int size, bool big_endian> | |
10217 | int64_t | |
10218 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
10219 | Symbol* gsym, | |
10220 | unsigned int got_indx) const | |
10221 | { | |
10222 | if (gsym->type() == elfcpp::STT_TLS) | |
10223 | { | |
10224 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
10225 | got_type <= GOT_TYPE_TPREL; | |
10226 | got_type = Got_type(got_type + 1)) | |
10227 | if (gsym->has_got_offset(got_type)) | |
10228 | { | |
10229 | unsigned int off = gsym->got_offset(got_type); | |
10230 | if (got_type == GOT_TYPE_TLSGD) | |
10231 | off += size / 8; | |
10232 | if (off == got_indx * (size / 8)) | |
10233 | { | |
10234 | if (got_type == GOT_TYPE_TPREL) | |
10235 | return -tp_offset; | |
10236 | else | |
10237 | return -dtp_offset; | |
10238 | } | |
10239 | } | |
10240 | } | |
10241 | gold_unreachable(); | |
10242 | } | |
10243 | ||
42cacb20 DE |
10244 | // The selector for powerpc object files. |
10245 | ||
10246 | template<int size, bool big_endian> | |
10247 | class Target_selector_powerpc : public Target_selector | |
10248 | { | |
10249 | public: | |
10250 | Target_selector_powerpc() | |
edc27beb AM |
10251 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
10252 | size, big_endian, | |
03ef7571 ILT |
10253 | (size == 64 |
10254 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
10255 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
10256 | (size == 64 | |
10257 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
10258 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
10259 | { } |
10260 | ||
2e702c99 RM |
10261 | virtual Target* |
10262 | do_instantiate_target() | |
7f055c20 | 10263 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
10264 | }; |
10265 | ||
10266 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
10267 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
10268 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
10269 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
10270 | ||
decdd3bc AM |
10271 | // Instantiate these constants for -O0 |
10272 | template<int size, bool big_endian> | |
9055360d AM |
10273 | const typename Output_data_glink<size, big_endian>::Address |
10274 | Output_data_glink<size, big_endian>::invalid_address; | |
10275 | template<int size, bool big_endian> | |
decdd3bc AM |
10276 | const typename Stub_table<size, big_endian>::Address |
10277 | Stub_table<size, big_endian>::invalid_address; | |
10278 | template<int size, bool big_endian> | |
10279 | const typename Target_powerpc<size, big_endian>::Address | |
10280 | Target_powerpc<size, big_endian>::invalid_address; | |
10281 | ||
42cacb20 | 10282 | } // End anonymous namespace. |