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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
250d07de | 3 | // Copyright (C) 2008-2021 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" |
724436fc | 44 | #include "attributes.h" |
42cacb20 DE |
45 | |
46 | namespace | |
47 | { | |
48 | ||
49 | using namespace gold; | |
50 | ||
51 | template<int size, bool big_endian> | |
52 | class Output_data_plt_powerpc; | |
53 | ||
ec661b9d AM |
54 | template<int size, bool big_endian> |
55 | class Output_data_brlt_powerpc; | |
56 | ||
cf43a2fe AM |
57 | template<int size, bool big_endian> |
58 | class Output_data_got_powerpc; | |
59 | ||
60 | template<int size, bool big_endian> | |
61 | class Output_data_glink; | |
62 | ||
ec661b9d AM |
63 | template<int size, bool big_endian> |
64 | class Stub_table; | |
65 | ||
d49044c7 AM |
66 | template<int size, bool big_endian> |
67 | class Output_data_save_res; | |
68 | ||
a3e60ddb AM |
69 | template<int size, bool big_endian> |
70 | class Target_powerpc; | |
71 | ||
72 | struct Stub_table_owner | |
73 | { | |
dc60b26d AM |
74 | Stub_table_owner() |
75 | : output_section(NULL), owner(NULL) | |
76 | { } | |
77 | ||
a3e60ddb AM |
78 | Output_section* output_section; |
79 | const Output_section::Input_section* owner; | |
80 | }; | |
81 | ||
32f59844 | 82 | template<int size> |
23cedd1d AM |
83 | inline bool is_branch_reloc(unsigned int); |
84 | ||
85 | template<int size> | |
86 | inline bool is_plt16_reloc(unsigned int); | |
4d9aa155 | 87 | |
590b87ff AM |
88 | // Counter incremented on every Powerpc_relobj constructed. |
89 | static uint32_t object_id = 0; | |
90 | ||
cf43a2fe AM |
91 | template<int size, bool big_endian> |
92 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
93 | { | |
94 | public: | |
dd93cd0a | 95 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
96 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
97 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 98 | |
cf43a2fe AM |
99 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
100 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
101 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff AM |
102 | uniq_(object_id++), special_(0), relatoc_(0), toc_(0), |
103 | has_small_toc_reloc_(false), opd_valid_(false), | |
104 | e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), | |
724436fc AM |
105 | access_from_map_(), has14_(), stub_table_index_(), st_other_(), |
106 | attributes_section_data_(NULL) | |
b4f7960d AM |
107 | { |
108 | this->set_abiversion(0); | |
109 | } | |
cf43a2fe AM |
110 | |
111 | ~Powerpc_relobj() | |
724436fc | 112 | { delete this->attributes_section_data_; } |
cf43a2fe | 113 | |
b4f7960d AM |
114 | // Read the symbols then set up st_other vector. |
115 | void | |
116 | do_read_symbols(Read_symbols_data*); | |
117 | ||
5edad15d AM |
118 | // Arrange to always relocate .toc first. |
119 | virtual void | |
120 | do_relocate_sections( | |
121 | const Symbol_table* symtab, const Layout* layout, | |
122 | const unsigned char* pshdrs, Output_file* of, | |
123 | typename Sized_relobj_file<size, big_endian>::Views* pviews); | |
124 | ||
125 | // The .toc section index. | |
126 | unsigned int | |
127 | toc_shndx() const | |
128 | { | |
129 | return this->toc_; | |
130 | } | |
131 | ||
132 | // Mark .toc entry at OFF as not optimizable. | |
133 | void | |
134 | set_no_toc_opt(Address off) | |
135 | { | |
136 | if (this->no_toc_opt_.empty()) | |
137 | this->no_toc_opt_.resize(this->section_size(this->toc_shndx()) | |
138 | / (size / 8)); | |
139 | off /= size / 8; | |
140 | if (off < this->no_toc_opt_.size()) | |
141 | this->no_toc_opt_[off] = true; | |
142 | } | |
143 | ||
144 | // Mark the entire .toc as not optimizable. | |
145 | void | |
146 | set_no_toc_opt() | |
147 | { | |
148 | this->no_toc_opt_.resize(1); | |
149 | this->no_toc_opt_[0] = true; | |
150 | } | |
151 | ||
152 | // Return true if code using the .toc entry at OFF should not be edited. | |
153 | bool | |
154 | no_toc_opt(Address off) const | |
155 | { | |
156 | if (this->no_toc_opt_.empty()) | |
157 | return false; | |
158 | off /= size / 8; | |
159 | if (off >= this->no_toc_opt_.size()) | |
160 | return true; | |
161 | return this->no_toc_opt_[off]; | |
162 | } | |
163 | ||
c9269dff | 164 | // The .got2 section shndx. |
cf43a2fe AM |
165 | unsigned int |
166 | got2_shndx() const | |
167 | { | |
168 | if (size == 32) | |
c9269dff | 169 | return this->special_; |
cf43a2fe AM |
170 | else |
171 | return 0; | |
172 | } | |
173 | ||
c9269dff AM |
174 | // The .opd section shndx. |
175 | unsigned int | |
176 | opd_shndx() const | |
177 | { | |
178 | if (size == 32) | |
179 | return 0; | |
180 | else | |
181 | return this->special_; | |
182 | } | |
183 | ||
184 | // Init OPD entry arrays. | |
185 | void | |
186 | init_opd(size_t opd_size) | |
187 | { | |
188 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 189 | this->opd_ent_.resize(count); |
c9269dff AM |
190 | } |
191 | ||
192 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
193 | unsigned int |
194 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
195 | { |
196 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
197 | gold_assert(ndx < this->opd_ent_.size()); |
198 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 199 | if (value != NULL) |
bfdfa4cd AM |
200 | *value = this->opd_ent_[ndx].off; |
201 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
202 | } |
203 | ||
204 | // Set section and offset of function entry for .opd + R_OFF. | |
205 | void | |
dd93cd0a | 206 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
207 | { |
208 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
209 | gold_assert(ndx < this->opd_ent_.size()); |
210 | this->opd_ent_[ndx].shndx = shndx; | |
211 | this->opd_ent_[ndx].off = value; | |
212 | } | |
213 | ||
214 | // Return discard flag for .opd + R_OFF. | |
215 | bool | |
216 | get_opd_discard(Address r_off) const | |
217 | { | |
218 | size_t ndx = this->opd_ent_ndx(r_off); | |
219 | gold_assert(ndx < this->opd_ent_.size()); | |
220 | return this->opd_ent_[ndx].discard; | |
221 | } | |
222 | ||
223 | // Set discard flag for .opd + R_OFF. | |
224 | void | |
225 | set_opd_discard(Address r_off) | |
226 | { | |
227 | size_t ndx = this->opd_ent_ndx(r_off); | |
228 | gold_assert(ndx < this->opd_ent_.size()); | |
229 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
230 | } |
231 | ||
e81fea4d AM |
232 | bool |
233 | opd_valid() const | |
234 | { return this->opd_valid_; } | |
235 | ||
236 | void | |
237 | set_opd_valid() | |
238 | { this->opd_valid_ = true; } | |
239 | ||
c9269dff AM |
240 | // Examine .rela.opd to build info about function entry points. |
241 | void | |
242 | scan_opd_relocs(size_t reloc_count, | |
243 | const unsigned char* prelocs, | |
244 | const unsigned char* plocal_syms); | |
245 | ||
5edad15d AM |
246 | // Returns true if a code sequence loading a TOC entry can be |
247 | // converted into code calculating a TOC pointer relative offset. | |
248 | bool | |
249 | make_toc_relative(Target_powerpc<size, big_endian>* target, | |
250 | Address* value); | |
251 | ||
c9b8abb7 AM |
252 | bool |
253 | make_got_relative(Target_powerpc<size, big_endian>* target, | |
254 | const Symbol_value<size>* psymval, | |
255 | Address addend, | |
256 | Address* value); | |
257 | ||
26a4e9cb AM |
258 | // Perform the Sized_relobj_file method, then set up opd info from |
259 | // .opd relocs. | |
c9269dff AM |
260 | void |
261 | do_read_relocs(Read_relocs_data*); | |
262 | ||
cf43a2fe AM |
263 | bool |
264 | do_find_special_sections(Read_symbols_data* sd); | |
265 | ||
ec4dbad3 AM |
266 | // Adjust this local symbol value. Return false if the symbol |
267 | // should be discarded from the output file. | |
268 | bool | |
269 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
270 | { | |
271 | if (size == 64 && this->opd_shndx() != 0) | |
272 | { | |
273 | bool is_ordinary; | |
274 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
275 | return true; | |
276 | if (this->get_opd_discard(lv->input_value())) | |
277 | return false; | |
278 | } | |
279 | return true; | |
280 | } | |
281 | ||
6c77229c AM |
282 | Access_from* |
283 | access_from_map() | |
284 | { return &this->access_from_map_; } | |
285 | ||
286 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
287 | // section at DST_OFF. | |
288 | void | |
efc6fa12 | 289 | add_reference(Relobj* src_obj, |
6c77229c AM |
290 | unsigned int src_indx, |
291 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
292 | { | |
293 | Section_id src_id(src_obj, src_indx); | |
294 | this->access_from_map_[dst_off].insert(src_id); | |
295 | } | |
296 | ||
297 | // Add a reference to the code section specified by the .opd entry | |
298 | // at DST_OFF | |
299 | void | |
300 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
301 | { | |
302 | size_t ndx = this->opd_ent_ndx(dst_off); | |
303 | if (ndx >= this->opd_ent_.size()) | |
304 | this->opd_ent_.resize(ndx + 1); | |
305 | this->opd_ent_[ndx].gc_mark = true; | |
306 | } | |
307 | ||
308 | void | |
309 | process_gc_mark(Symbol_table* symtab) | |
310 | { | |
311 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
312 | if (this->opd_ent_[i].gc_mark) | |
313 | { | |
314 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 315 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
316 | } |
317 | } | |
318 | ||
dd93cd0a AM |
319 | // Return offset in output GOT section that this object will use |
320 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
321 | Address | |
322 | toc_base_offset() const | |
323 | { return 0x8000; } | |
324 | ||
d8f5a274 AM |
325 | void |
326 | set_has_small_toc_reloc() | |
327 | { has_small_toc_reloc_ = true; } | |
328 | ||
329 | bool | |
330 | has_small_toc_reloc() const | |
331 | { return has_small_toc_reloc_; } | |
332 | ||
ec661b9d AM |
333 | void |
334 | set_has_14bit_branch(unsigned int shndx) | |
335 | { | |
336 | if (shndx >= this->has14_.size()) | |
337 | this->has14_.resize(shndx + 1); | |
338 | this->has14_[shndx] = true; | |
339 | } | |
340 | ||
341 | bool | |
342 | has_14bit_branch(unsigned int shndx) const | |
343 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
344 | ||
345 | void | |
a3e60ddb | 346 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 347 | { |
a3e60ddb | 348 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 349 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 350 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
351 | } |
352 | ||
353 | Stub_table<size, big_endian>* | |
354 | stub_table(unsigned int shndx) | |
355 | { | |
a3e60ddb AM |
356 | if (shndx < this->stub_table_index_.size()) |
357 | { | |
358 | Target_powerpc<size, big_endian>* target | |
359 | = static_cast<Target_powerpc<size, big_endian>*>( | |
360 | parameters->sized_target<size, big_endian>()); | |
361 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
362 | if (indx < target->stub_tables().size()) |
363 | return target->stub_tables()[indx]; | |
a3e60ddb | 364 | } |
ec661b9d AM |
365 | return NULL; |
366 | } | |
367 | ||
a3e60ddb AM |
368 | void |
369 | clear_stub_table() | |
370 | { | |
371 | this->stub_table_index_.clear(); | |
372 | } | |
373 | ||
590b87ff AM |
374 | uint32_t |
375 | uniq() const | |
376 | { return this->uniq_; } | |
377 | ||
b4f7960d AM |
378 | int |
379 | abiversion() const | |
380 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
381 | ||
382 | // Set ABI version for input and output | |
383 | void | |
384 | set_abiversion(int ver); | |
385 | ||
7ee7ff70 AM |
386 | unsigned int |
387 | st_other (unsigned int symndx) const | |
388 | { | |
389 | return this->st_other_[symndx]; | |
390 | } | |
391 | ||
b4f7960d AM |
392 | unsigned int |
393 | ppc64_local_entry_offset(const Symbol* sym) const | |
394 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
395 | ||
396 | unsigned int | |
397 | ppc64_local_entry_offset(unsigned int symndx) const | |
398 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
399 | ||
32f59844 AM |
400 | bool |
401 | ppc64_needs_toc(const Symbol* sym) const | |
402 | { return sym->nonvis() > 1 << 3; } | |
403 | ||
404 | bool | |
405 | ppc64_needs_toc(unsigned int symndx) const | |
406 | { return this->st_other_[symndx] > 1 << 5; } | |
407 | ||
724436fc AM |
408 | // The contents of the .gnu.attributes section if there is one. |
409 | const Attributes_section_data* | |
410 | attributes_section_data() const | |
411 | { return this->attributes_section_data_; } | |
412 | ||
cf43a2fe | 413 | private: |
bfdfa4cd AM |
414 | struct Opd_ent |
415 | { | |
416 | unsigned int shndx; | |
c6de8ed4 AM |
417 | bool discard : 1; |
418 | bool gc_mark : 1; | |
26a4e9cb | 419 | Address off; |
bfdfa4cd AM |
420 | }; |
421 | ||
422 | // Return index into opd_ent_ array for .opd entry at OFF. | |
423 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
424 | // apart when the language doesn't use the last 8-byte word, the | |
425 | // environment pointer. Thus dividing the entry section offset by | |
426 | // 16 will give an index into opd_ent_ that works for either layout | |
427 | // of .opd. (It leaves some elements of the vector unused when .opd | |
428 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
429 | // until relocations are processed, and in any case it is possible | |
430 | // for an object to have some entries spaced 16 bytes apart and | |
431 | // others 24 bytes apart.) | |
c9269dff AM |
432 | size_t |
433 | opd_ent_ndx(size_t off) const | |
434 | { return off >> 4;} | |
435 | ||
590b87ff AM |
436 | // Per object unique identifier |
437 | uint32_t uniq_; | |
438 | ||
c9269dff AM |
439 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. |
440 | unsigned int special_; | |
bfdfa4cd | 441 | |
5edad15d AM |
442 | // For 64-bit the .rela.toc and .toc section shdnx. |
443 | unsigned int relatoc_; | |
444 | unsigned int toc_; | |
445 | ||
d8f5a274 AM |
446 | // For 64-bit, whether this object uses small model relocs to access |
447 | // the toc. | |
448 | bool has_small_toc_reloc_; | |
449 | ||
bfdfa4cd AM |
450 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
451 | // vector is valid. The flag could be made atomic and set in | |
452 | // do_read_relocs with memory_order_release and then tested with | |
453 | // memory_order_acquire, potentially resulting in fewer entries in | |
454 | // access_from_map_. | |
455 | bool opd_valid_; | |
456 | ||
590b87ff AM |
457 | // Header e_flags |
458 | elfcpp::Elf_Word e_flags_; | |
459 | ||
460 | // For 64-bit, an array with one entry per 64-bit word in the .toc | |
461 | // section, set if accesses using that word cannot be optimised. | |
462 | std::vector<bool> no_toc_opt_; | |
463 | ||
c9269dff AM |
464 | // The first 8-byte word of an OPD entry gives the address of the |
465 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 466 | // relocation on this word. The following vector records the |
c9269dff | 467 | // section and offset specified by these relocations. |
bfdfa4cd AM |
468 | std::vector<Opd_ent> opd_ent_; |
469 | ||
e81fea4d | 470 | // References made to this object's .opd section when running |
bfdfa4cd AM |
471 | // gc_process_relocs for another object, before the opd_ent_ vector |
472 | // is valid for this object. | |
e81fea4d | 473 | Access_from access_from_map_; |
ec661b9d AM |
474 | |
475 | // Whether input section has a 14-bit branch reloc. | |
476 | std::vector<bool> has14_; | |
477 | ||
478 | // The stub table to use for a given input section. | |
a3e60ddb | 479 | std::vector<unsigned int> stub_table_index_; |
b4f7960d | 480 | |
b4f7960d AM |
481 | // ELF st_other field for local symbols. |
482 | std::vector<unsigned char> st_other_; | |
724436fc AM |
483 | |
484 | // Object attributes if there is a .gnu.attributes section. | |
485 | Attributes_section_data* attributes_section_data_; | |
cf43a2fe AM |
486 | }; |
487 | ||
dc3714f3 AM |
488 | template<int size, bool big_endian> |
489 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
490 | { | |
491 | public: | |
492 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
493 | ||
494 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
495 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
496 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
724436fc AM |
497 | opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_(), |
498 | attributes_section_data_(NULL) | |
b4f7960d AM |
499 | { |
500 | this->set_abiversion(0); | |
501 | } | |
dc3714f3 AM |
502 | |
503 | ~Powerpc_dynobj() | |
724436fc | 504 | { delete this->attributes_section_data_; } |
dc3714f3 AM |
505 | |
506 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
507 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
508 | void | |
509 | do_read_symbols(Read_symbols_data*); | |
510 | ||
511 | // The .opd section shndx. | |
512 | unsigned int | |
513 | opd_shndx() const | |
514 | { | |
515 | return this->opd_shndx_; | |
516 | } | |
517 | ||
518 | // The .opd section address. | |
519 | Address | |
520 | opd_address() const | |
521 | { | |
522 | return this->opd_address_; | |
523 | } | |
524 | ||
525 | // Init OPD entry arrays. | |
526 | void | |
527 | init_opd(size_t opd_size) | |
528 | { | |
529 | size_t count = this->opd_ent_ndx(opd_size); | |
530 | this->opd_ent_.resize(count); | |
531 | } | |
532 | ||
533 | // Return section and offset of function entry for .opd + R_OFF. | |
534 | unsigned int | |
535 | get_opd_ent(Address r_off, Address* value = NULL) const | |
536 | { | |
537 | size_t ndx = this->opd_ent_ndx(r_off); | |
538 | gold_assert(ndx < this->opd_ent_.size()); | |
539 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
540 | if (value != NULL) | |
541 | *value = this->opd_ent_[ndx].off; | |
542 | return this->opd_ent_[ndx].shndx; | |
543 | } | |
544 | ||
545 | // Set section and offset of function entry for .opd + R_OFF. | |
546 | void | |
547 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
548 | { | |
549 | size_t ndx = this->opd_ent_ndx(r_off); | |
550 | gold_assert(ndx < this->opd_ent_.size()); | |
551 | this->opd_ent_[ndx].shndx = shndx; | |
552 | this->opd_ent_[ndx].off = value; | |
553 | } | |
554 | ||
b4f7960d AM |
555 | int |
556 | abiversion() const | |
557 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
558 | ||
559 | // Set ABI version for input and output. | |
560 | void | |
561 | set_abiversion(int ver); | |
562 | ||
724436fc AM |
563 | // The contents of the .gnu.attributes section if there is one. |
564 | const Attributes_section_data* | |
565 | attributes_section_data() const | |
566 | { return this->attributes_section_data_; } | |
567 | ||
dc3714f3 AM |
568 | private: |
569 | // Used to specify extent of executable sections. | |
570 | struct Sec_info | |
571 | { | |
572 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
573 | : start(start_), len(len_), shndx(shndx_) | |
574 | { } | |
575 | ||
576 | bool | |
577 | operator<(const Sec_info& that) const | |
578 | { return this->start < that.start; } | |
579 | ||
580 | Address start; | |
581 | Address len; | |
582 | unsigned int shndx; | |
583 | }; | |
584 | ||
585 | struct Opd_ent | |
586 | { | |
587 | unsigned int shndx; | |
588 | Address off; | |
589 | }; | |
590 | ||
591 | // Return index into opd_ent_ array for .opd entry at OFF. | |
592 | size_t | |
593 | opd_ent_ndx(size_t off) const | |
594 | { return off >> 4;} | |
595 | ||
596 | // For 64-bit the .opd section shndx and address. | |
597 | unsigned int opd_shndx_; | |
598 | Address opd_address_; | |
599 | ||
590b87ff AM |
600 | // Header e_flags |
601 | elfcpp::Elf_Word e_flags_; | |
602 | ||
dc3714f3 AM |
603 | // The first 8-byte word of an OPD entry gives the address of the |
604 | // entry point of the function. Records the section and offset | |
605 | // corresponding to the address. Note that in dynamic objects, | |
606 | // offset is *not* relative to the section. | |
607 | std::vector<Opd_ent> opd_ent_; | |
724436fc AM |
608 | |
609 | // Object attributes if there is a .gnu.attributes section. | |
610 | Attributes_section_data* attributes_section_data_; | |
dc3714f3 AM |
611 | }; |
612 | ||
5edad15d AM |
613 | // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the |
614 | // base class will emit. | |
615 | ||
616 | template<int sh_type, int size, bool big_endian> | |
617 | class Powerpc_copy_relocs : public Copy_relocs<sh_type, size, big_endian> | |
618 | { | |
619 | public: | |
620 | Powerpc_copy_relocs() | |
621 | : Copy_relocs<sh_type, size, big_endian>(elfcpp::R_POWERPC_COPY) | |
622 | { } | |
623 | ||
624 | // Emit any saved relocations which turn out to be needed. This is | |
625 | // called after all the relocs have been scanned. | |
626 | void | |
627 | emit(Output_data_reloc<sh_type, true, size, big_endian>*); | |
628 | }; | |
629 | ||
42cacb20 DE |
630 | template<int size, bool big_endian> |
631 | class Target_powerpc : public Sized_target<size, big_endian> | |
632 | { | |
633 | public: | |
d83ce4e3 AM |
634 | typedef |
635 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 636 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 637 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
7e57d19e | 638 | typedef Unordered_set<Symbol_location, Symbol_location_hash> Tocsave_loc; |
c9269dff | 639 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
640 | // Offset of tp and dtp pointers from start of TLS block. |
641 | static const Address tp_offset = 0x7000; | |
642 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
643 | |
644 | Target_powerpc() | |
645 | : Sized_target<size, big_endian>(&powerpc_info), | |
2d7ad24e | 646 | got_(NULL), plt_(NULL), iplt_(NULL), lplt_(NULL), brlt_section_(NULL), |
5edad15d | 647 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(), |
43819297 | 648 | tlsld_got_offset_(-1U), |
7e57d19e | 649 | stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), |
63e5eea2 | 650 | power10_relocs_(false), plt_thread_safe_(false), plt_localentry0_(false), |
7ee7ff70 | 651 | plt_localentry0_init_(false), has_localentry0_(false), |
4e0e019f | 652 | has_tls_get_addr_opt_(false), no_tprel_opt_(false), |
7ee7ff70 | 653 | relax_failed_(false), relax_fail_count_(0), |
34e0882b | 654 | stub_group_size_(0), savres_section_(0), |
724436fc AM |
655 | tls_get_addr_(NULL), tls_get_addr_opt_(NULL), |
656 | attributes_section_data_(NULL), | |
657 | last_fp_(NULL), last_ld_(NULL), last_vec_(NULL), last_struct_(NULL) | |
42cacb20 DE |
658 | { |
659 | } | |
660 | ||
2e702c99 | 661 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
662 | // garbage collection. |
663 | void | |
ad0f2072 | 664 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
665 | Layout* layout, |
666 | Sized_relobj_file<size, big_endian>* object, | |
667 | unsigned int data_shndx, | |
668 | unsigned int sh_type, | |
669 | const unsigned char* prelocs, | |
670 | size_t reloc_count, | |
671 | Output_section* output_section, | |
672 | bool needs_special_offset_handling, | |
673 | size_t local_symbol_count, | |
674 | const unsigned char* plocal_symbols); | |
6d03d481 | 675 | |
42cacb20 DE |
676 | // Scan the relocations to look for symbol adjustments. |
677 | void | |
ad0f2072 | 678 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 679 | Layout* layout, |
6fa2a40b | 680 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
681 | unsigned int data_shndx, |
682 | unsigned int sh_type, | |
683 | const unsigned char* prelocs, | |
684 | size_t reloc_count, | |
685 | Output_section* output_section, | |
686 | bool needs_special_offset_handling, | |
687 | size_t local_symbol_count, | |
688 | const unsigned char* plocal_symbols); | |
921b5322 AM |
689 | |
690 | // Map input .toc section to output .got section. | |
691 | const char* | |
692 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
693 | { | |
694 | if (size == 64 && strcmp(name, ".toc") == 0) | |
695 | { | |
696 | *plen = 4; | |
697 | return ".got"; | |
698 | } | |
699 | return NULL; | |
700 | } | |
701 | ||
f3a0ed29 AM |
702 | // Provide linker defined save/restore functions. |
703 | void | |
704 | define_save_restore_funcs(Layout*, Symbol_table*); | |
705 | ||
ec661b9d AM |
706 | // No stubs unless a final link. |
707 | bool | |
708 | do_may_relax() const | |
709 | { return !parameters->options().relocatable(); } | |
710 | ||
711 | bool | |
712 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
713 | ||
9d5781f8 AM |
714 | void |
715 | do_plt_fde_location(const Output_data*, unsigned char*, | |
716 | uint64_t*, off_t*) const; | |
717 | ||
ec661b9d AM |
718 | // Stash info about branches, for stub generation. |
719 | void | |
720 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
721 | unsigned int data_shndx, Address r_offset, | |
722 | unsigned int r_type, unsigned int r_sym, Address addend) | |
723 | { | |
724 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
725 | this->branch_info_.push_back(info); | |
726 | if (r_type == elfcpp::R_POWERPC_REL14 | |
727 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
728 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
729 | ppc_object->set_has_14bit_branch(data_shndx); | |
730 | } | |
731 | ||
7e57d19e AM |
732 | // Return whether the last branch is a plt call, and if so, mark the |
733 | // branch as having an R_PPC64_TOCSAVE. | |
734 | bool | |
735 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
736 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
737 | { | |
738 | return (size == 64 | |
739 | && !this->branch_info_.empty() | |
740 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
741 | r_offset, this, symtab)); | |
742 | } | |
743 | ||
744 | // Say the given location, that of a nop in a function prologue with | |
745 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
746 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
747 | void | |
748 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
749 | unsigned int shndx, Address offset) | |
750 | { | |
751 | Symbol_location loc; | |
752 | loc.object = ppc_object; | |
753 | loc.shndx = shndx; | |
754 | loc.offset = offset; | |
755 | this->tocsave_loc_.insert(loc); | |
756 | } | |
757 | ||
758 | // Accessor | |
b0d0d02b | 759 | const Tocsave_loc* |
7e57d19e AM |
760 | tocsave_loc() const |
761 | { | |
b0d0d02b | 762 | return &this->tocsave_loc_; |
7e57d19e AM |
763 | } |
764 | ||
f43ba157 AM |
765 | void |
766 | do_define_standard_symbols(Symbol_table*, Layout*); | |
767 | ||
42cacb20 DE |
768 | // Finalize the sections. |
769 | void | |
f59f41f3 | 770 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
771 | |
772 | // Return the value to use for a dynamic which requires special | |
773 | // treatment. | |
774 | uint64_t | |
775 | do_dynsym_value(const Symbol*) const; | |
776 | ||
c9824451 AM |
777 | // Return the PLT address to use for a local symbol. |
778 | uint64_t | |
779 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
780 | ||
781 | // Return the PLT address to use for a global symbol. | |
782 | uint64_t | |
783 | do_plt_address_for_global(const Symbol*) const; | |
784 | ||
bd73a62d AM |
785 | // Return the offset to use for the GOT_INDX'th got entry which is |
786 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
787 | int64_t | |
788 | do_tls_offset_for_local(const Relobj* object, | |
789 | unsigned int symndx, | |
790 | unsigned int got_indx) const; | |
791 | ||
792 | // Return the offset to use for the GOT_INDX'th got entry which is | |
793 | // for global tls symbol GSYM. | |
794 | int64_t | |
795 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
796 | ||
dc3714f3 AM |
797 | void |
798 | do_function_location(Symbol_location*) const; | |
799 | ||
4d9aa155 AM |
800 | bool |
801 | do_can_check_for_function_pointers() const | |
802 | { return true; } | |
803 | ||
bbec1a5d AM |
804 | // Adjust -fsplit-stack code which calls non-split-stack code. |
805 | void | |
806 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
807 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 808 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
809 | unsigned char* view, section_size_type view_size, |
810 | std::string* from, std::string* to) const; | |
811 | ||
42cacb20 DE |
812 | // Relocate a section. |
813 | void | |
814 | relocate_section(const Relocate_info<size, big_endian>*, | |
815 | unsigned int sh_type, | |
816 | const unsigned char* prelocs, | |
817 | size_t reloc_count, | |
818 | Output_section* output_section, | |
819 | bool needs_special_offset_handling, | |
820 | unsigned char* view, | |
c9269dff | 821 | Address view_address, |
364c7fa5 ILT |
822 | section_size_type view_size, |
823 | const Reloc_symbol_changes*); | |
42cacb20 DE |
824 | |
825 | // Scan the relocs during a relocatable link. | |
826 | void | |
ad0f2072 | 827 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 828 | Layout* layout, |
6fa2a40b | 829 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
830 | unsigned int data_shndx, |
831 | unsigned int sh_type, | |
832 | const unsigned char* prelocs, | |
833 | size_t reloc_count, | |
834 | Output_section* output_section, | |
835 | bool needs_special_offset_handling, | |
836 | size_t local_symbol_count, | |
837 | const unsigned char* plocal_symbols, | |
838 | Relocatable_relocs*); | |
839 | ||
4d625b70 CC |
840 | // Scan the relocs for --emit-relocs. |
841 | void | |
842 | emit_relocs_scan(Symbol_table* symtab, | |
843 | Layout* layout, | |
844 | Sized_relobj_file<size, big_endian>* object, | |
845 | unsigned int data_shndx, | |
846 | unsigned int sh_type, | |
847 | const unsigned char* prelocs, | |
848 | size_t reloc_count, | |
849 | Output_section* output_section, | |
850 | bool needs_special_offset_handling, | |
851 | size_t local_symbol_count, | |
852 | const unsigned char* plocal_syms, | |
853 | Relocatable_relocs* rr); | |
854 | ||
7404fe1b | 855 | // Emit relocations for a section. |
42cacb20 | 856 | void |
7404fe1b AM |
857 | relocate_relocs(const Relocate_info<size, big_endian>*, |
858 | unsigned int sh_type, | |
859 | const unsigned char* prelocs, | |
860 | size_t reloc_count, | |
861 | Output_section* output_section, | |
62fe925a RM |
862 | typename elfcpp::Elf_types<size>::Elf_Off |
863 | offset_in_output_section, | |
7404fe1b AM |
864 | unsigned char*, |
865 | Address view_address, | |
866 | section_size_type, | |
867 | unsigned char* reloc_view, | |
868 | section_size_type reloc_view_size); | |
42cacb20 DE |
869 | |
870 | // Return whether SYM is defined by the ABI. | |
871 | bool | |
9c2d0ef9 | 872 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 873 | { |
cf43a2fe | 874 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
875 | } |
876 | ||
877 | // Return the size of the GOT section. | |
878 | section_size_type | |
0e70b911 | 879 | got_size() const |
42cacb20 DE |
880 | { |
881 | gold_assert(this->got_ != NULL); | |
882 | return this->got_->data_size(); | |
883 | } | |
884 | ||
cf43a2fe AM |
885 | // Get the PLT section. |
886 | const Output_data_plt_powerpc<size, big_endian>* | |
887 | plt_section() const | |
888 | { | |
889 | gold_assert(this->plt_ != NULL); | |
890 | return this->plt_; | |
891 | } | |
892 | ||
e5d5f5ed AM |
893 | // Get the IPLT section. |
894 | const Output_data_plt_powerpc<size, big_endian>* | |
895 | iplt_section() const | |
896 | { | |
897 | gold_assert(this->iplt_ != NULL); | |
898 | return this->iplt_; | |
899 | } | |
900 | ||
2d7ad24e AM |
901 | // Get the LPLT section. |
902 | const Output_data_plt_powerpc<size, big_endian>* | |
903 | lplt_section() const | |
904 | { | |
905 | return this->lplt_; | |
906 | } | |
907 | ||
08be3224 AM |
908 | // Return the plt offset and section for the given global sym. |
909 | Address | |
910 | plt_off(const Symbol* gsym, | |
911 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
912 | { | |
913 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
914 | && gsym->can_use_relative_reloc(false)) | |
915 | *sec = this->iplt_section(); | |
916 | else | |
917 | *sec = this->plt_section(); | |
918 | return gsym->plt_offset(); | |
919 | } | |
920 | ||
921 | // Return the plt offset and section for the given local sym. | |
922 | Address | |
923 | plt_off(const Sized_relobj_file<size, big_endian>* relobj, | |
924 | unsigned int local_sym_index, | |
925 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
926 | { | |
2d7ad24e AM |
927 | const Symbol_value<size>* lsym = relobj->local_symbol(local_sym_index); |
928 | if (lsym->is_ifunc_symbol()) | |
929 | *sec = this->iplt_section(); | |
930 | else | |
931 | *sec = this->lplt_section(); | |
08be3224 AM |
932 | return relobj->local_plt_offset(local_sym_index); |
933 | } | |
934 | ||
cf43a2fe AM |
935 | // Get the .glink section. |
936 | const Output_data_glink<size, big_endian>* | |
937 | glink_section() const | |
938 | { | |
939 | gold_assert(this->glink_ != NULL); | |
940 | return this->glink_; | |
941 | } | |
942 | ||
9055360d AM |
943 | Output_data_glink<size, big_endian>* |
944 | glink_section() | |
945 | { | |
946 | gold_assert(this->glink_ != NULL); | |
947 | return this->glink_; | |
948 | } | |
949 | ||
9d5781f8 AM |
950 | bool has_glink() const |
951 | { return this->glink_ != NULL; } | |
952 | ||
cf43a2fe AM |
953 | // Get the GOT section. |
954 | const Output_data_got_powerpc<size, big_endian>* | |
955 | got_section() const | |
956 | { | |
957 | gold_assert(this->got_ != NULL); | |
958 | return this->got_; | |
959 | } | |
960 | ||
26a4e9cb AM |
961 | // Get the GOT section, creating it if necessary. |
962 | Output_data_got_powerpc<size, big_endian>* | |
963 | got_section(Symbol_table*, Layout*); | |
964 | ||
cf43a2fe AM |
965 | Object* |
966 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
967 | const elfcpp::Ehdr<size, big_endian>&); | |
968 | ||
0e70b911 CC |
969 | // Return the number of entries in the GOT. |
970 | unsigned int | |
971 | got_entry_count() const | |
972 | { | |
973 | if (this->got_ == NULL) | |
974 | return 0; | |
975 | return this->got_size() / (size / 8); | |
976 | } | |
977 | ||
978 | // Return the number of entries in the PLT. | |
979 | unsigned int | |
980 | plt_entry_count() const; | |
981 | ||
982 | // Return the offset of the first non-reserved PLT entry. | |
983 | unsigned int | |
b4f7960d AM |
984 | first_plt_entry_offset() const |
985 | { | |
986 | if (size == 32) | |
987 | return 0; | |
988 | if (this->abiversion() >= 2) | |
989 | return 16; | |
990 | return 24; | |
991 | } | |
0e70b911 CC |
992 | |
993 | // Return the size of each PLT entry. | |
994 | unsigned int | |
b4f7960d AM |
995 | plt_entry_size() const |
996 | { | |
997 | if (size == 32) | |
998 | return 4; | |
999 | if (this->abiversion() >= 2) | |
1000 | return 8; | |
1001 | return 24; | |
1002 | } | |
0e70b911 | 1003 | |
d49044c7 AM |
1004 | Output_data_save_res<size, big_endian>* |
1005 | savres_section() const | |
1006 | { | |
1007 | return this->savres_section_; | |
1008 | } | |
1009 | ||
e81fea4d AM |
1010 | // Add any special sections for this symbol to the gc work list. |
1011 | // For powerpc64, this adds the code section of a function | |
1012 | // descriptor. | |
1013 | void | |
1014 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
1015 | ||
1016 | // Handle target specific gc actions when adding a gc reference from | |
1017 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
1018 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
1019 | // section of a function descriptor. | |
1020 | void | |
1021 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 1022 | Relobj* src_obj, |
e81fea4d | 1023 | unsigned int src_shndx, |
efc6fa12 | 1024 | Relobj* dst_obj, |
e81fea4d AM |
1025 | unsigned int dst_shndx, |
1026 | Address dst_off) const; | |
1027 | ||
ec661b9d AM |
1028 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
1029 | const Stub_tables& | |
1030 | stub_tables() const | |
1031 | { return this->stub_tables_; } | |
1032 | ||
1033 | const Output_data_brlt_powerpc<size, big_endian>* | |
1034 | brlt_section() const | |
1035 | { return this->brlt_section_; } | |
1036 | ||
1037 | void | |
1038 | add_branch_lookup_table(Address to) | |
1039 | { | |
1040 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
1041 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
1042 | } | |
1043 | ||
1044 | Address | |
1045 | find_branch_lookup_table(Address to) | |
1046 | { | |
1047 | typename Branch_lookup_table::const_iterator p | |
1048 | = this->branch_lookup_table_.find(to); | |
1049 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
1050 | } | |
1051 | ||
1052 | void | |
1053 | write_branch_lookup_table(unsigned char *oview) | |
1054 | { | |
1055 | for (typename Branch_lookup_table::const_iterator p | |
1056 | = this->branch_lookup_table_.begin(); | |
1057 | p != this->branch_lookup_table_.end(); | |
1058 | ++p) | |
1059 | { | |
4d5effb9 | 1060 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
1061 | } |
1062 | } | |
1063 | ||
590b87ff AM |
1064 | // Wrapper used after relax to define a local symbol in output data, |
1065 | // from the end if value < 0. | |
1066 | void | |
1067 | define_local(Symbol_table* symtab, const char* name, | |
1068 | Output_data* od, Address value, unsigned int symsize) | |
1069 | { | |
1070 | Symbol* sym | |
1071 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
1072 | od, value, symsize, elfcpp::STT_NOTYPE, | |
1073 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1074 | static_cast<Signed_address>(value) < 0, | |
1075 | false); | |
1076 | // We are creating this symbol late, so need to fix up things | |
1077 | // done early in Layout::finalize. | |
1078 | sym->set_dynsym_index(-1U); | |
1079 | } | |
1080 | ||
63e5eea2 AM |
1081 | void |
1082 | set_power10_relocs() | |
1083 | { | |
1084 | this->power10_relocs_ = true; | |
1085 | } | |
1086 | ||
e4dff765 | 1087 | bool |
7c1f4227 | 1088 | power10_stubs() const |
e4dff765 | 1089 | { |
63e5eea2 AM |
1090 | return (this->power10_relocs_ |
1091 | && (parameters->options().power10_stubs_enum() | |
1092 | != General_options::POWER10_STUBS_NO)); | |
afd2ea23 AM |
1093 | } |
1094 | ||
1095 | bool | |
1096 | power10_stubs_auto() const | |
1097 | { | |
1098 | return (parameters->options().power10_stubs_enum() | |
1099 | == General_options::POWER10_STUBS_AUTO); | |
e4dff765 AM |
1100 | } |
1101 | ||
9e69ed50 AM |
1102 | bool |
1103 | plt_thread_safe() const | |
1104 | { return this->plt_thread_safe_; } | |
1105 | ||
7ee7ff70 AM |
1106 | bool |
1107 | plt_localentry0() const | |
1108 | { return this->plt_localentry0_; } | |
1109 | ||
63e5eea2 AM |
1110 | bool |
1111 | has_localentry0() const | |
1112 | { return this->has_localentry0_; } | |
1113 | ||
7ee7ff70 AM |
1114 | void |
1115 | set_has_localentry0() | |
1116 | { | |
1117 | this->has_localentry0_ = true; | |
1118 | } | |
1119 | ||
1120 | bool | |
1121 | is_elfv2_localentry0(const Symbol* gsym) const | |
1122 | { | |
1123 | return (size == 64 | |
1124 | && this->abiversion() >= 2 | |
1125 | && this->plt_localentry0() | |
1126 | && gsym->type() == elfcpp::STT_FUNC | |
1127 | && gsym->is_defined() | |
565ed01a AM |
1128 | && gsym->nonvis() >> 3 == 0 |
1129 | && !gsym->non_zero_localentry()); | |
7ee7ff70 AM |
1130 | } |
1131 | ||
1132 | bool | |
1133 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1134 | unsigned int r_sym) const | |
1135 | { | |
1136 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1137 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1138 | ||
1139 | if (size == 64 | |
1140 | && this->abiversion() >= 2 | |
1141 | && this->plt_localentry0() | |
1142 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1143 | { | |
1144 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1145 | bool is_ordinary; | |
1146 | if (!psymval->is_ifunc_symbol() | |
1147 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1148 | && is_ordinary) | |
1149 | return true; | |
1150 | } | |
1151 | return false; | |
1152 | } | |
1153 | ||
252dcdf4 AM |
1154 | bool |
1155 | tprel_opt() const | |
4e0e019f | 1156 | { return !this->no_tprel_opt_ && parameters->options().tls_optimize(); } |
252dcdf4 AM |
1157 | |
1158 | void | |
4e0e019f AM |
1159 | set_no_tprel_opt() |
1160 | { this->no_tprel_opt_ = true; } | |
252dcdf4 | 1161 | |
565ed01a AM |
1162 | // Remember any symbols seen with non-zero localentry, even those |
1163 | // not providing a definition | |
1164 | bool | |
1165 | resolve(Symbol* to, const elfcpp::Sym<size, big_endian>& sym, Object*, | |
1166 | const char*) | |
1167 | { | |
1168 | if (size == 64) | |
1169 | { | |
1170 | unsigned char st_other = sym.get_st_other(); | |
1171 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1172 | to->set_non_zero_localentry(); | |
1173 | } | |
1174 | // We haven't resolved anything, continue normal processing. | |
1175 | return false; | |
1176 | } | |
1177 | ||
b4f7960d | 1178 | int |
aacb3b6d | 1179 | abiversion() const |
b4f7960d AM |
1180 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } |
1181 | ||
1182 | void | |
aacb3b6d | 1183 | set_abiversion(int ver) |
b4f7960d AM |
1184 | { |
1185 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1186 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1187 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1188 | this->set_processor_specific_flags(flags); | |
1189 | } | |
1190 | ||
34e0882b AM |
1191 | Symbol* |
1192 | tls_get_addr_opt() const | |
1193 | { return this->tls_get_addr_opt_; } | |
1194 | ||
1195 | Symbol* | |
1196 | tls_get_addr() const | |
1197 | { return this->tls_get_addr_; } | |
1198 | ||
1199 | // If optimizing __tls_get_addr calls, whether this is the | |
1200 | // "__tls_get_addr" symbol. | |
1201 | bool | |
1202 | is_tls_get_addr_opt(const Symbol* gsym) const | |
1203 | { | |
1204 | return this->tls_get_addr_opt_ && (gsym == this->tls_get_addr_ | |
1205 | || gsym == this->tls_get_addr_opt_); | |
1206 | } | |
1207 | ||
1208 | bool | |
1209 | replace_tls_get_addr(const Symbol* gsym) const | |
1210 | { return this->tls_get_addr_opt_ && gsym == this->tls_get_addr_; } | |
1211 | ||
1212 | void | |
1213 | set_has_tls_get_addr_opt() | |
1214 | { this->has_tls_get_addr_opt_ = true; } | |
1215 | ||
aacb3b6d | 1216 | // Offset to toc save stack slot |
b4f7960d | 1217 | int |
aacb3b6d | 1218 | stk_toc() const |
b4f7960d AM |
1219 | { return this->abiversion() < 2 ? 40 : 24; } |
1220 | ||
34e0882b AM |
1221 | // Offset to linker save stack slot. ELFv2 doesn't have a linker word, |
1222 | // so use the CR save slot. Used only by __tls_get_addr call stub, | |
1223 | // relying on __tls_get_addr not saving CR itself. | |
1224 | int | |
1225 | stk_linker() const | |
1226 | { return this->abiversion() < 2 ? 32 : 8; } | |
1227 | ||
724436fc AM |
1228 | // Merge object attributes from input object with those in the output. |
1229 | void | |
6f3fe02b | 1230 | merge_object_attributes(const Object*, const Attributes_section_data*); |
724436fc | 1231 | |
42cacb20 DE |
1232 | private: |
1233 | ||
e3deeb9c AM |
1234 | class Track_tls |
1235 | { | |
1236 | public: | |
1237 | enum Tls_get_addr | |
1238 | { | |
1239 | NOT_EXPECTED = 0, | |
1240 | EXPECTED = 1, | |
1241 | SKIP = 2, | |
1242 | NORMAL = 3 | |
1243 | }; | |
1244 | ||
1245 | Track_tls() | |
aacb3b6d | 1246 | : tls_get_addr_state_(NOT_EXPECTED), |
e3deeb9c AM |
1247 | relinfo_(NULL), relnum_(0), r_offset_(0) |
1248 | { } | |
1249 | ||
1250 | ~Track_tls() | |
1251 | { | |
aacb3b6d | 1252 | if (this->tls_get_addr_state_ != NOT_EXPECTED) |
e3deeb9c AM |
1253 | this->missing(); |
1254 | } | |
1255 | ||
1256 | void | |
1257 | missing(void) | |
1258 | { | |
1259 | if (this->relinfo_ != NULL) | |
1260 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1261 | _("missing expected __tls_get_addr call")); | |
1262 | } | |
1263 | ||
1264 | void | |
1265 | expect_tls_get_addr_call( | |
1266 | const Relocate_info<size, big_endian>* relinfo, | |
1267 | size_t relnum, | |
1268 | Address r_offset) | |
1269 | { | |
aacb3b6d | 1270 | this->tls_get_addr_state_ = EXPECTED; |
e3deeb9c AM |
1271 | this->relinfo_ = relinfo; |
1272 | this->relnum_ = relnum; | |
1273 | this->r_offset_ = r_offset; | |
1274 | } | |
1275 | ||
1276 | void | |
1277 | expect_tls_get_addr_call() | |
aacb3b6d | 1278 | { this->tls_get_addr_state_ = EXPECTED; } |
e3deeb9c AM |
1279 | |
1280 | void | |
1281 | skip_next_tls_get_addr_call() | |
aacb3b6d | 1282 | {this->tls_get_addr_state_ = SKIP; } |
e3deeb9c AM |
1283 | |
1284 | Tls_get_addr | |
34e0882b AM |
1285 | maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, |
1286 | unsigned int r_type, const Symbol* gsym) | |
e3deeb9c | 1287 | { |
32f59844 AM |
1288 | bool is_tls_call |
1289 | = ((r_type == elfcpp::R_POWERPC_REL24 | |
1290 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) | |
1291 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1292 | || is_plt16_reloc<size>(r_type) | |
e4dff765 AM |
1293 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 |
1294 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
32f59844 AM |
1295 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
1296 | || r_type == elfcpp::R_POWERPC_PLTCALL | |
1297 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC | |
1298 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
1299 | && gsym != NULL | |
1300 | && (gsym == target->tls_get_addr() | |
1301 | || gsym == target->tls_get_addr_opt())); | |
aacb3b6d AM |
1302 | Tls_get_addr last_tls = this->tls_get_addr_state_; |
1303 | this->tls_get_addr_state_ = NOT_EXPECTED; | |
e3deeb9c AM |
1304 | if (is_tls_call && last_tls != EXPECTED) |
1305 | return last_tls; | |
1306 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1307 | { | |
1308 | this->missing(); | |
1309 | return EXPECTED; | |
1310 | } | |
1311 | return NORMAL; | |
1312 | } | |
1313 | ||
1314 | private: | |
1315 | // What we're up to regarding calls to __tls_get_addr. | |
1316 | // On powerpc, the branch and link insn making a call to | |
1317 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1318 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
32f59844 | 1319 | // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call. |
e3deeb9c AM |
1320 | // The marker relocation always comes first, and has the same |
1321 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1322 | // argument. This ties the arg setup insn with the call insn, | |
1323 | // allowing ld to safely optimize away the call. We check that | |
1324 | // every call to __tls_get_addr has a marker relocation, and that | |
1325 | // every marker relocation is on a call to __tls_get_addr. | |
aacb3b6d | 1326 | Tls_get_addr tls_get_addr_state_; |
e3deeb9c AM |
1327 | // Info about the last reloc for error message. |
1328 | const Relocate_info<size, big_endian>* relinfo_; | |
1329 | size_t relnum_; | |
1330 | Address r_offset_; | |
1331 | }; | |
1332 | ||
42cacb20 | 1333 | // The class which scans relocations. |
e3deeb9c | 1334 | class Scan : protected Track_tls |
42cacb20 DE |
1335 | { |
1336 | public: | |
bfdfa4cd AM |
1337 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1338 | ||
42cacb20 | 1339 | Scan() |
e3deeb9c | 1340 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1341 | { } |
1342 | ||
95a2c8d6 | 1343 | static inline int |
88b8e639 | 1344 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1345 | |
42cacb20 | 1346 | inline void |
ad0f2072 | 1347 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1348 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1349 | unsigned int data_shndx, |
1350 | Output_section* output_section, | |
1351 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1352 | const elfcpp::Sym<size, big_endian>& lsym, |
1353 | bool is_discarded); | |
42cacb20 DE |
1354 | |
1355 | inline void | |
ad0f2072 | 1356 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1357 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1358 | unsigned int data_shndx, |
1359 | Output_section* output_section, | |
1360 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1361 | Symbol* gsym); | |
1362 | ||
21bb3914 ST |
1363 | inline bool |
1364 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1365 | Target_powerpc* , | |
f6971787 | 1366 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1367 | unsigned int , |
2e702c99 RM |
1368 | Output_section* , |
1369 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1370 | unsigned int r_type, |
2e702c99 | 1371 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1372 | { |
1373 | // PowerPC64 .opd is not folded, so any identical function text | |
1374 | // may be folded and we'll still keep function addresses distinct. | |
1375 | // That means no reloc is of concern here. | |
1376 | if (size == 64) | |
f6971787 AM |
1377 | { |
1378 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1379 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1380 | if (ppcobj->abiversion() == 1) | |
1381 | return false; | |
1382 | } | |
1383 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 | 1384 | // function code might be taking the address of the function. |
32f59844 | 1385 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1386 | } |
21bb3914 ST |
1387 | |
1388 | inline bool | |
1389 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1390 | Target_powerpc* , | |
f6971787 | 1391 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1392 | unsigned int , |
1393 | Output_section* , | |
4d9aa155 AM |
1394 | const elfcpp::Rela<size, big_endian>& , |
1395 | unsigned int r_type, | |
1396 | Symbol*) | |
1397 | { | |
1398 | // As above. | |
1399 | if (size == 64) | |
f6971787 AM |
1400 | { |
1401 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1402 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1403 | if (ppcobj->abiversion() == 1) | |
1404 | return false; | |
1405 | } | |
32f59844 | 1406 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1407 | } |
21bb3914 | 1408 | |
b3ccdeb5 | 1409 | static bool |
9055360d AM |
1410 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1411 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1412 | unsigned int r_type, bool report_err); |
1413 | ||
42cacb20 DE |
1414 | private: |
1415 | static void | |
6fa2a40b | 1416 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1417 | unsigned int r_type); |
1418 | ||
1419 | static void | |
6fa2a40b | 1420 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1421 | unsigned int r_type, Symbol*); |
1422 | ||
1423 | static void | |
1424 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1425 | Target_powerpc* target); | |
1426 | ||
1427 | void | |
1428 | check_non_pic(Relobj*, unsigned int r_type); | |
1429 | ||
1430 | // Whether we have issued an error about a non-PIC compilation. | |
1431 | bool issued_non_pic_error_; | |
1432 | }; | |
1433 | ||
1611bc4a AM |
1434 | bool |
1435 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1436 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1437 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1438 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1439 | |
42cacb20 | 1440 | // The class which implements relocation. |
e3deeb9c | 1441 | class Relocate : protected Track_tls |
42cacb20 DE |
1442 | { |
1443 | public: | |
dd93cd0a AM |
1444 | // Use 'at' branch hints when true, 'y' when false. |
1445 | // FIXME maybe: set this with an option. | |
1446 | static const bool is_isa_v2 = true; | |
1447 | ||
dd93cd0a | 1448 | Relocate() |
e3deeb9c | 1449 | : Track_tls() |
dd93cd0a AM |
1450 | { } |
1451 | ||
42cacb20 DE |
1452 | // Do a relocation. Return false if the caller should not issue |
1453 | // any warnings about this relocation. | |
1454 | inline bool | |
91a65d2f AM |
1455 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1456 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1457 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1458 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1459 | section_size_type); |
42cacb20 DE |
1460 | }; |
1461 | ||
168a4726 AM |
1462 | class Relocate_comdat_behavior |
1463 | { | |
1464 | public: | |
1465 | // Decide what the linker should do for relocations that refer to | |
1466 | // discarded comdat sections. | |
1467 | inline Comdat_behavior | |
1468 | get(const char* name) | |
1469 | { | |
1470 | gold::Default_comdat_behavior default_behavior; | |
1471 | Comdat_behavior ret = default_behavior.get(name); | |
43193fe9 | 1472 | if (ret == CB_ERROR) |
168a4726 AM |
1473 | { |
1474 | if (size == 32 | |
1475 | && (strcmp(name, ".fixup") == 0 | |
1476 | || strcmp(name, ".got2") == 0)) | |
1477 | ret = CB_IGNORE; | |
1478 | if (size == 64 | |
1479 | && (strcmp(name, ".opd") == 0 | |
1480 | || strcmp(name, ".toc") == 0 | |
1481 | || strcmp(name, ".toc1") == 0)) | |
1482 | ret = CB_IGNORE; | |
1483 | } | |
1484 | return ret; | |
1485 | } | |
1486 | }; | |
1487 | ||
dd93cd0a AM |
1488 | // Optimize the TLS relocation type based on what we know about the |
1489 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1490 | // known at link time. | |
1491 | ||
1492 | tls::Tls_optimization | |
1493 | optimize_tls_gd(bool is_final) | |
1494 | { | |
1495 | // If we are generating a shared library, then we can't do anything | |
1496 | // in the linker. | |
aacb3b6d AM |
1497 | if (parameters->options().shared() |
1498 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1499 | return tls::TLSOPT_NONE; |
1500 | ||
1501 | if (!is_final) | |
1502 | return tls::TLSOPT_TO_IE; | |
1503 | return tls::TLSOPT_TO_LE; | |
1504 | } | |
1505 | ||
1506 | tls::Tls_optimization | |
1507 | optimize_tls_ld() | |
1508 | { | |
aacb3b6d AM |
1509 | if (parameters->options().shared() |
1510 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1511 | return tls::TLSOPT_NONE; |
1512 | ||
1513 | return tls::TLSOPT_TO_LE; | |
1514 | } | |
1515 | ||
1516 | tls::Tls_optimization | |
1517 | optimize_tls_ie(bool is_final) | |
1518 | { | |
aacb3b6d AM |
1519 | if (!is_final |
1520 | || parameters->options().shared() | |
1521 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1522 | return tls::TLSOPT_NONE; |
1523 | ||
1524 | return tls::TLSOPT_TO_LE; | |
1525 | } | |
cf43a2fe | 1526 | |
cf43a2fe AM |
1527 | // Create glink. |
1528 | void | |
1529 | make_glink_section(Layout*); | |
42cacb20 | 1530 | |
cf43a2fe AM |
1531 | // Create the PLT section. |
1532 | void | |
40b469d7 | 1533 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1534 | |
e5d5f5ed | 1535 | void |
40b469d7 | 1536 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1537 | |
2d7ad24e AM |
1538 | void |
1539 | make_lplt_section(Layout*); | |
1540 | ||
ec661b9d AM |
1541 | void |
1542 | make_brlt_section(Layout*); | |
1543 | ||
42cacb20 DE |
1544 | // Create a PLT entry for a global symbol. |
1545 | void | |
ec661b9d | 1546 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1547 | |
1548 | // Create a PLT entry for a local IFUNC symbol. | |
1549 | void | |
40b469d7 | 1550 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1551 | Sized_relobj_file<size, big_endian>*, |
1552 | unsigned int); | |
1553 | ||
2d7ad24e AM |
1554 | // Create a PLT entry for a local non-IFUNC symbol. |
1555 | void | |
1556 | make_local_plt_entry(Layout*, | |
1557 | Sized_relobj_file<size, big_endian>*, | |
1558 | unsigned int); | |
1559 | ||
42cacb20 | 1560 | |
dd93cd0a AM |
1561 | // Create a GOT entry for local dynamic __tls_get_addr. |
1562 | unsigned int | |
1563 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1564 | Sized_relobj_file<size, big_endian>* object); | |
1565 | ||
42cacb20 | 1566 | unsigned int |
dd93cd0a AM |
1567 | tlsld_got_offset() const |
1568 | { | |
1569 | return this->tlsld_got_offset_; | |
1570 | } | |
42cacb20 | 1571 | |
42cacb20 DE |
1572 | // Get the dynamic reloc section, creating it if necessary. |
1573 | Reloc_section* | |
1574 | rela_dyn_section(Layout*); | |
1575 | ||
b3ccdeb5 AM |
1576 | // Similarly, but for ifunc symbols get the one for ifunc. |
1577 | Reloc_section* | |
1578 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1579 | ||
42cacb20 DE |
1580 | // Copy a relocation against a global symbol. |
1581 | void | |
ef9beddf | 1582 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1583 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1584 | unsigned int shndx, Output_section* output_section, |
1585 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1586 | { | |
859d7987 | 1587 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1588 | this->copy_relocs_.copy_reloc(symtab, layout, |
1589 | symtab->get_sized_symbol<size>(sym), | |
1590 | object, shndx, output_section, | |
859d7987 CC |
1591 | r_type, reloc.get_r_offset(), |
1592 | reloc.get_r_addend(), | |
1593 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1594 | } |
1595 | ||
0cfdc767 | 1596 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1597 | void |
a3e60ddb | 1598 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1599 | |
1600 | // Sort output sections by address. | |
1601 | struct Sort_sections | |
1602 | { | |
1603 | bool | |
1604 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1605 | { return sec1->address() < sec2->address(); } | |
1606 | }; | |
1607 | ||
1608 | class Branch_info | |
1609 | { | |
1610 | public: | |
1611 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1612 | unsigned int data_shndx, | |
1613 | Address r_offset, | |
1614 | unsigned int r_type, | |
1615 | unsigned int r_sym, | |
1616 | Address addend) | |
1617 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1618 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1619 | { } |
1620 | ||
1621 | ~Branch_info() | |
1622 | { } | |
1623 | ||
7e57d19e AM |
1624 | // Return whether this branch is going via a plt call stub, and if |
1625 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1626 | bool | |
1627 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1628 | unsigned int shndx, Address offset, | |
1629 | Target_powerpc* target, Symbol_table* symtab); | |
1630 | ||
ec661b9d | 1631 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1632 | bool |
ec661b9d AM |
1633 | make_stub(Stub_table<size, big_endian>*, |
1634 | Stub_table<size, big_endian>*, | |
1635 | Symbol_table*) const; | |
1636 | ||
1637 | private: | |
1638 | // The branch location.. | |
1639 | Powerpc_relobj<size, big_endian>* object_; | |
1640 | unsigned int shndx_; | |
1641 | Address offset_; | |
1642 | // ..and the branch type and destination. | |
7e57d19e AM |
1643 | unsigned int r_type_ : 31; |
1644 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1645 | unsigned int r_sym_; |
1646 | Address addend_; | |
1647 | }; | |
1648 | ||
42cacb20 DE |
1649 | // Information about this specific target which we pass to the |
1650 | // general Target structure. | |
1651 | static Target::Target_info powerpc_info; | |
1652 | ||
1653 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1654 | // These values are exposed to the ABI in an incremental link. |
1655 | // Do not renumber existing values without changing the version | |
1656 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1657 | enum Got_type |
1658 | { | |
dd93cd0a AM |
1659 | GOT_TYPE_STANDARD, |
1660 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1661 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1662 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1663 | }; |
1664 | ||
ec661b9d | 1665 | // The GOT section. |
cf43a2fe | 1666 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1667 | // The PLT section. This is a container for a table of addresses, |
1668 | // and their relocations. Each address in the PLT has a dynamic | |
1669 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1670 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1671 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1672 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1673 | // linker adds a stub that loads the PLT entry into ctr then | |
1674 | // branches to ctr. There may be more than one stub for each PLT | |
1675 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1676 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1677 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1678 | // The IPLT section. Like plt_, this is a container for a table of |
1679 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1680 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1681 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1682 | // entry in .glink for lazy resolution, and the relocation section | |
1683 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1684 | // the relocation section may contain relocations against | |
1685 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1686 | // relocation section will appear at the end of other dynamic | |
1687 | // relocations, so that ld.so applies these relocations after other | |
1688 | // dynamic relocations. In a static executable, the relocation | |
1689 | // section is emitted and marked with __rela_iplt_start and | |
1690 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1691 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
2d7ad24e AM |
1692 | // A PLT style section for local, non-ifunc symbols |
1693 | Output_data_plt_powerpc<size, big_endian>* lplt_; | |
ec661b9d AM |
1694 | // Section holding long branch destinations. |
1695 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1696 | // The .glink section. | |
cf43a2fe | 1697 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1698 | // The dynamic reloc section. |
42cacb20 DE |
1699 | Reloc_section* rela_dyn_; |
1700 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1701 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1702 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1703 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1704 | |
1705 | Stub_tables stub_tables_; | |
1706 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1707 | Branch_lookup_table branch_lookup_table_; | |
1708 | ||
1709 | typedef std::vector<Branch_info> Branches; | |
1710 | Branches branch_info_; | |
7e57d19e | 1711 | Tocsave_loc tocsave_loc_; |
9e69ed50 | 1712 | |
63e5eea2 | 1713 | bool power10_relocs_; |
9e69ed50 | 1714 | bool plt_thread_safe_; |
7ee7ff70 AM |
1715 | bool plt_localentry0_; |
1716 | bool plt_localentry0_init_; | |
1717 | bool has_localentry0_; | |
34e0882b | 1718 | bool has_tls_get_addr_opt_; |
4e0e019f | 1719 | bool no_tprel_opt_; |
a3e60ddb AM |
1720 | |
1721 | bool relax_failed_; | |
1722 | int relax_fail_count_; | |
1723 | int32_t stub_group_size_; | |
d49044c7 AM |
1724 | |
1725 | Output_data_save_res<size, big_endian> *savres_section_; | |
34e0882b AM |
1726 | |
1727 | // The "__tls_get_addr" symbol, if present | |
1728 | Symbol* tls_get_addr_; | |
1729 | // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. | |
1730 | Symbol* tls_get_addr_opt_; | |
724436fc AM |
1731 | |
1732 | // Attributes in output. | |
1733 | Attributes_section_data* attributes_section_data_; | |
1734 | ||
1735 | // Last input file to change various attribute tags | |
1736 | const char* last_fp_; | |
1737 | const char* last_ld_; | |
1738 | const char* last_vec_; | |
1739 | const char* last_struct_; | |
42cacb20 DE |
1740 | }; |
1741 | ||
1742 | template<> | |
1743 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1744 | { | |
1745 | 32, // size | |
1746 | true, // is_big_endian | |
1747 | elfcpp::EM_PPC, // machine_code | |
1748 | false, // has_make_symbol | |
1749 | false, // has_resolve | |
1750 | false, // has_code_fill | |
1751 | true, // is_default_stack_executable | |
b3ce541e | 1752 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1753 | '\0', // wrap_char |
1754 | "/usr/lib/ld.so.1", // dynamic_linker | |
1755 | 0x10000000, // default_text_segment_address | |
1756 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1757 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1758 | false, // isolate_execinstr |
1759 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1760 | elfcpp::SHN_UNDEF, // small_common_shndx |
1761 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1762 | 0, // small_common_section_flags | |
05a352e6 DK |
1763 | 0, // large_common_section_flags |
1764 | NULL, // attributes_section | |
a67858e0 | 1765 | NULL, // attributes_vendor |
8d9743bd MK |
1766 | "_start", // entry_symbol_name |
1767 | 32, // hash_entry_size | |
bce5a025 | 1768 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1769 | }; |
1770 | ||
1771 | template<> | |
1772 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1773 | { | |
1774 | 32, // size | |
1775 | false, // is_big_endian | |
1776 | elfcpp::EM_PPC, // machine_code | |
1777 | false, // has_make_symbol | |
1778 | false, // has_resolve | |
1779 | false, // has_code_fill | |
1780 | true, // is_default_stack_executable | |
b3ce541e | 1781 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1782 | '\0', // wrap_char |
1783 | "/usr/lib/ld.so.1", // dynamic_linker | |
1784 | 0x10000000, // default_text_segment_address | |
1785 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1786 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1787 | false, // isolate_execinstr |
1788 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1789 | elfcpp::SHN_UNDEF, // small_common_shndx |
1790 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1791 | 0, // small_common_section_flags | |
05a352e6 DK |
1792 | 0, // large_common_section_flags |
1793 | NULL, // attributes_section | |
a67858e0 | 1794 | NULL, // attributes_vendor |
8d9743bd MK |
1795 | "_start", // entry_symbol_name |
1796 | 32, // hash_entry_size | |
bce5a025 | 1797 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1798 | }; |
1799 | ||
1800 | template<> | |
1801 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1802 | { | |
1803 | 64, // size | |
1804 | true, // is_big_endian | |
1805 | elfcpp::EM_PPC64, // machine_code | |
1806 | false, // has_make_symbol | |
565ed01a | 1807 | true, // has_resolve |
42cacb20 | 1808 | false, // has_code_fill |
ec769010 | 1809 | false, // is_default_stack_executable |
b3ce541e | 1810 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1811 | '\0', // wrap_char |
1812 | "/usr/lib/ld.so.1", // dynamic_linker | |
1813 | 0x10000000, // default_text_segment_address | |
1814 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1815 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1816 | false, // isolate_execinstr |
1817 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1818 | elfcpp::SHN_UNDEF, // small_common_shndx |
1819 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1820 | 0, // small_common_section_flags | |
05a352e6 DK |
1821 | 0, // large_common_section_flags |
1822 | NULL, // attributes_section | |
a67858e0 | 1823 | NULL, // attributes_vendor |
8d9743bd MK |
1824 | "_start", // entry_symbol_name |
1825 | 32, // hash_entry_size | |
bce5a025 | 1826 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1827 | }; |
1828 | ||
1829 | template<> | |
1830 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1831 | { | |
1832 | 64, // size | |
1833 | false, // is_big_endian | |
1834 | elfcpp::EM_PPC64, // machine_code | |
1835 | false, // has_make_symbol | |
565ed01a | 1836 | true, // has_resolve |
42cacb20 | 1837 | false, // has_code_fill |
ec769010 | 1838 | false, // is_default_stack_executable |
b3ce541e | 1839 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1840 | '\0', // wrap_char |
1841 | "/usr/lib/ld.so.1", // dynamic_linker | |
1842 | 0x10000000, // default_text_segment_address | |
1843 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1844 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1845 | false, // isolate_execinstr |
1846 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1847 | elfcpp::SHN_UNDEF, // small_common_shndx |
1848 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1849 | 0, // small_common_section_flags | |
05a352e6 DK |
1850 | 0, // large_common_section_flags |
1851 | NULL, // attributes_section | |
a67858e0 | 1852 | NULL, // attributes_vendor |
8d9743bd MK |
1853 | "_start", // entry_symbol_name |
1854 | 32, // hash_entry_size | |
bce5a025 | 1855 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1856 | }; |
1857 | ||
32f59844 | 1858 | template<int size> |
dd93cd0a AM |
1859 | inline bool |
1860 | is_branch_reloc(unsigned int r_type) | |
1861 | { | |
1862 | return (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 1863 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
dd93cd0a AM |
1864 | || r_type == elfcpp::R_PPC_PLTREL24 |
1865 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1866 | || r_type == elfcpp::R_POWERPC_REL14 | |
1867 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1868 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1869 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1870 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1871 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1872 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1873 | } | |
1874 | ||
08be3224 AM |
1875 | // Reloc resolves to plt entry. |
1876 | template<int size> | |
1877 | inline bool | |
1878 | is_plt16_reloc(unsigned int r_type) | |
1879 | { | |
1880 | return (r_type == elfcpp::R_POWERPC_PLT16_LO | |
1881 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
1882 | || r_type == elfcpp::R_POWERPC_PLT16_HA | |
1883 | || (size == 64 && r_type == elfcpp::R_PPC64_PLT16_LO_DS)); | |
1884 | } | |
1885 | ||
4290b0ab AM |
1886 | // GOT_TYPE_STANDARD (ie. not TLS) GOT relocs |
1887 | inline bool | |
1888 | is_got_reloc(unsigned int r_type) | |
1889 | { | |
1890 | return (r_type == elfcpp::R_POWERPC_GOT16 | |
1891 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
1892 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
1893 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
1894 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
1895 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS | |
1896 | || r_type == elfcpp::R_PPC64_GOT_PCREL34); | |
1897 | } | |
1898 | ||
dd93cd0a AM |
1899 | // If INSN is an opcode that may be used with an @tls operand, return |
1900 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1901 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1902 | uint32_t | |
1903 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1904 | { | |
1905 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1906 | return 0; | |
1907 | ||
1908 | unsigned int rtra; | |
1909 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1910 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1911 | else if (((insn >> 16) & 0x1f) == reg) | |
1912 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1913 | else | |
1914 | return 0; | |
1915 | ||
1916 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1917 | // add -> addi | |
1918 | insn = 14 << 26; | |
1919 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1920 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1921 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1922 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1923 | // load and store indexed -> dform | |
1924 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1925 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1926 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1927 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1928 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1929 | // lwax -> lwa | |
1930 | insn = (58 << 26) | 2; | |
1931 | else | |
1932 | return 0; | |
1933 | insn |= rtra; | |
1934 | return insn; | |
1935 | } | |
1936 | ||
dd93cd0a | 1937 | |
42cacb20 DE |
1938 | template<int size, bool big_endian> |
1939 | class Powerpc_relocate_functions | |
1940 | { | |
dd93cd0a | 1941 | public: |
f4baf0d4 | 1942 | enum Overflow_check |
dd93cd0a | 1943 | { |
f4baf0d4 AM |
1944 | CHECK_NONE, |
1945 | CHECK_SIGNED, | |
b80eed39 AM |
1946 | CHECK_UNSIGNED, |
1947 | CHECK_BITFIELD, | |
1948 | CHECK_LOW_INSN, | |
1949 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1950 | }; |
1951 | ||
f4baf0d4 | 1952 | enum Status |
dd93cd0a | 1953 | { |
f4baf0d4 AM |
1954 | STATUS_OK, |
1955 | STATUS_OVERFLOW | |
1956 | }; | |
dd93cd0a | 1957 | |
42cacb20 | 1958 | private: |
c9269dff | 1959 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1960 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1961 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1962 | |
dd93cd0a AM |
1963 | template<int valsize> |
1964 | static inline bool | |
1965 | has_overflow_signed(Address value) | |
1966 | { | |
1967 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1968 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1969 | limit <<= ((valsize - 1) >> 1); | |
1970 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1971 | return value + limit > (limit << 1) - 1; | |
1972 | } | |
1973 | ||
1974 | template<int valsize> | |
1975 | static inline bool | |
b80eed39 | 1976 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1977 | { |
1978 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1979 | limit <<= ((valsize - 1) >> 1); | |
1980 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1981 | return value > (limit << 1) - 1; |
1982 | } | |
1983 | ||
1984 | template<int valsize> | |
1985 | static inline bool | |
1986 | has_overflow_bitfield(Address value) | |
1987 | { | |
1988 | return (has_overflow_unsigned<valsize>(value) | |
1989 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1990 | } |
1991 | ||
1992 | template<int valsize> | |
f4baf0d4 AM |
1993 | static inline Status |
1994 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1995 | { |
f4baf0d4 | 1996 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1997 | { |
1998 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1999 | return STATUS_OVERFLOW; |
dd93cd0a | 2000 | } |
b80eed39 AM |
2001 | else if (overflow == CHECK_UNSIGNED) |
2002 | { | |
2003 | if (has_overflow_unsigned<valsize>(value)) | |
2004 | return STATUS_OVERFLOW; | |
2005 | } | |
f4baf0d4 | 2006 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
2007 | { |
2008 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 2009 | return STATUS_OVERFLOW; |
dd93cd0a | 2010 | } |
f4baf0d4 | 2011 | return STATUS_OK; |
dd93cd0a AM |
2012 | } |
2013 | ||
cf43a2fe | 2014 | // Do a simple RELA relocation |
0cfb0717 | 2015 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
2016 | static inline Status |
2017 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2018 | { |
0cfb0717 | 2019 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 2020 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 2021 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
2022 | return overflowed<valsize>(value, overflow); |
2023 | } | |
2024 | ||
0cfb0717 | 2025 | template<int fieldsize, int valsize> |
f4baf0d4 | 2026 | static inline Status |
42cacb20 DE |
2027 | rela(unsigned char* view, |
2028 | unsigned int right_shift, | |
0cfb0717 | 2029 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 2030 | Address value, |
f4baf0d4 | 2031 | Overflow_check overflow) |
42cacb20 | 2032 | { |
0cfb0717 | 2033 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 2034 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 2035 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
6a010cf6 AM |
2036 | if (overflow == CHECK_SIGNED) |
2037 | value = static_cast<SignedAddress>(value) >> right_shift; | |
2038 | else | |
2039 | value = value >> right_shift; | |
2040 | Valtype reloc = value; | |
42cacb20 DE |
2041 | val &= ~dst_mask; |
2042 | reloc &= dst_mask; | |
0cfb0717 | 2043 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
6a010cf6 | 2044 | return overflowed<valsize>(value, overflow); |
42cacb20 DE |
2045 | } |
2046 | ||
cf43a2fe | 2047 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 2048 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
2049 | static inline Status |
2050 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2051 | { |
0cfb0717 | 2052 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
2053 | return overflowed<valsize>(value, overflow); |
2054 | } | |
2055 | ||
0cfb0717 | 2056 | template<int fieldsize, int valsize> |
f4baf0d4 | 2057 | static inline Status |
cf43a2fe AM |
2058 | rela_ua(unsigned char* view, |
2059 | unsigned int right_shift, | |
0cfb0717 | 2060 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 2061 | Address value, |
f4baf0d4 | 2062 | Overflow_check overflow) |
42cacb20 | 2063 | { |
0cfb0717 | 2064 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 2065 | Valtype; |
0cfb0717 | 2066 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
6a010cf6 AM |
2067 | if (overflow == CHECK_SIGNED) |
2068 | value = static_cast<SignedAddress>(value) >> right_shift; | |
2069 | else | |
2070 | value = value >> right_shift; | |
2071 | Valtype reloc = value; | |
42cacb20 DE |
2072 | val &= ~dst_mask; |
2073 | reloc &= dst_mask; | |
0cfb0717 | 2074 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
6a010cf6 | 2075 | return overflowed<valsize>(value, overflow); |
42cacb20 DE |
2076 | } |
2077 | ||
42cacb20 | 2078 | public: |
dd93cd0a | 2079 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 2080 | static inline void |
dd93cd0a | 2081 | addr64(unsigned char* view, Address value) |
0cfb0717 | 2082 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 2083 | |
dd93cd0a | 2084 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 2085 | static inline void |
dd93cd0a | 2086 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 2087 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
2088 | |
2089 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
2090 | static inline Status |
2091 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2092 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
2093 | |
2094 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
2095 | static inline Status |
2096 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2097 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
2098 | |
2099 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
2100 | static inline Status |
2101 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2102 | { |
0cfb0717 AM |
2103 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
2104 | value, overflow); | |
f4baf0d4 AM |
2105 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2106 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2107 | return stat; |
2108 | } | |
42cacb20 DE |
2109 | |
2110 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
2111 | static inline Status |
2112 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2113 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 2114 | |
dd93cd0a | 2115 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
2116 | static inline Status |
2117 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2118 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 2119 | |
dd93cd0a | 2120 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
2121 | static inline Status |
2122 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2123 | { |
0cfb0717 | 2124 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 2125 | if ((value & 3) != 0) |
f4baf0d4 | 2126 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
2127 | return stat; |
2128 | } | |
42cacb20 | 2129 | |
a680de9a PB |
2130 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
2131 | static inline Status | |
2132 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
2133 | { | |
2134 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
2135 | if ((value & 15) != 0) | |
2136 | stat = STATUS_OVERFLOW; | |
2137 | return stat; | |
2138 | } | |
2139 | ||
42cacb20 DE |
2140 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
2141 | static inline void | |
dd93cd0a | 2142 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 2143 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2144 | |
c9269dff | 2145 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 2146 | static inline void |
dd93cd0a AM |
2147 | addr16_ha(unsigned char* view, Address value) |
2148 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 2149 | |
dd93cd0a | 2150 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 2151 | static inline void |
dd93cd0a | 2152 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 2153 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2154 | |
dd93cd0a | 2155 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 2156 | static inline void |
dd93cd0a AM |
2157 | addr16_ha2(unsigned char* view, Address value) |
2158 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 2159 | |
dd93cd0a | 2160 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 2161 | static inline void |
dd93cd0a | 2162 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 2163 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2164 | |
dd93cd0a | 2165 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 2166 | static inline void |
dd93cd0a AM |
2167 | addr16_ha3(unsigned char* view, Address value) |
2168 | { This::addr16_hi3(view, value + 0x8000); } | |
2169 | ||
2170 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
2171 | static inline Status |
2172 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2173 | { |
0cfb0717 | 2174 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
2175 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2176 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2177 | return stat; |
2178 | } | |
a680de9a PB |
2179 | |
2180 | // R_POWERPC_REL16DX_HA | |
2181 | static inline Status | |
2182 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
2183 | { | |
2184 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
2185 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
2186 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
2187 | value += 0x8000; | |
2188 | value = static_cast<SignedAddress>(value) >> 16; | |
2189 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2190 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
2191 | return overflowed<16>(value, overflow); | |
2192 | } | |
e4dff765 AM |
2193 | |
2194 | // R_PPC64_D34 | |
2195 | static inline Status | |
2196 | addr34(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2197 | { | |
2198 | Status stat = This::template rela<32,18>(view, 16, 0x3ffff, | |
2199 | value, overflow); | |
2200 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2201 | return stat; | |
2202 | } | |
2203 | ||
2204 | // R_PPC64_D34_HI30 | |
2205 | static inline void | |
2206 | addr34_hi(unsigned char *view, uint64_t value) | |
2207 | { This::addr34(view, value >> 34, CHECK_NONE);} | |
2208 | ||
2209 | // R_PPC64_D34_HA30 | |
2210 | static inline void | |
2211 | addr34_ha(unsigned char *view, uint64_t value) | |
2212 | { This::addr34_hi(view, value + (1ULL << 33));} | |
2213 | ||
2214 | // R_PPC64_D28 | |
2215 | static inline Status | |
2216 | addr28(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2217 | { | |
2218 | Status stat = This::template rela<32,12>(view, 16, 0xfff, | |
2219 | value, overflow); | |
2220 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2221 | return stat; | |
2222 | } | |
2223 | ||
2224 | // R_PPC64_ADDR16_HIGHER34 | |
2225 | static inline void | |
2226 | addr16_higher34(unsigned char* view, uint64_t value) | |
2227 | { This::addr16(view, value >> 34, CHECK_NONE); } | |
2228 | ||
2229 | // R_PPC64_ADDR16_HIGHERA34 | |
2230 | static inline void | |
2231 | addr16_highera34(unsigned char* view, uint64_t value) | |
2232 | { This::addr16_higher34(view, value + (1ULL << 33)); } | |
2233 | ||
2234 | // R_PPC64_ADDR16_HIGHEST34 | |
2235 | static inline void | |
2236 | addr16_highest34(unsigned char* view, uint64_t value) | |
2237 | { This::addr16(view, value >> 50, CHECK_NONE); } | |
2238 | ||
2239 | // R_PPC64_ADDR16_HIGHESTA34 | |
2240 | static inline void | |
2241 | addr16_highesta34(unsigned char* view, uint64_t value) | |
2242 | { This::addr16_highest34(view, value + (1ULL << 33)); } | |
cf43a2fe AM |
2243 | }; |
2244 | ||
b4f7960d AM |
2245 | // Set ABI version for input and output. |
2246 | ||
2247 | template<int size, bool big_endian> | |
2248 | void | |
2249 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
2250 | { | |
2251 | this->e_flags_ |= ver; | |
2252 | if (this->abiversion() != 0) | |
2253 | { | |
2254 | Target_powerpc<size, big_endian>* target = | |
2255 | static_cast<Target_powerpc<size, big_endian>*>( | |
2256 | parameters->sized_target<size, big_endian>()); | |
2257 | if (target->abiversion() == 0) | |
2258 | target->set_abiversion(this->abiversion()); | |
2259 | else if (target->abiversion() != this->abiversion()) | |
2260 | gold_error(_("%s: ABI version %d is not compatible " | |
2261 | "with ABI version %d output"), | |
2262 | this->name().c_str(), | |
2263 | this->abiversion(), target->abiversion()); | |
2264 | ||
2265 | } | |
2266 | } | |
2267 | ||
5edad15d AM |
2268 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
2269 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
2270 | |
2271 | template<int size, bool big_endian> | |
2272 | bool | |
2273 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
2274 | Read_symbols_data* sd) | |
2275 | { | |
c9269dff AM |
2276 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2277 | const unsigned char* namesu = sd->section_names->data(); | |
2278 | const char* names = reinterpret_cast<const char*>(namesu); | |
2279 | section_size_type names_size = sd->section_names_size; | |
2280 | const unsigned char* s; | |
2281 | ||
dc3714f3 AM |
2282 | s = this->template find_shdr<size, big_endian>(pshdrs, |
2283 | size == 32 ? ".got2" : ".opd", | |
2284 | names, names_size, NULL); | |
c9269dff AM |
2285 | if (s != NULL) |
2286 | { | |
2287 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2288 | this->special_ = ndx; | |
b4f7960d AM |
2289 | if (size == 64) |
2290 | { | |
2291 | if (this->abiversion() == 0) | |
2292 | this->set_abiversion(1); | |
2293 | else if (this->abiversion() > 1) | |
2294 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2295 | this->name().c_str(), this->abiversion()); | |
2296 | } | |
c9269dff | 2297 | } |
5edad15d AM |
2298 | if (size == 64) |
2299 | { | |
2300 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2301 | names, names_size, NULL); | |
2302 | if (s != NULL) | |
2303 | { | |
2304 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2305 | this->relatoc_ = ndx; | |
2306 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2307 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2308 | } | |
2309 | } | |
c9269dff AM |
2310 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2311 | } | |
2312 | ||
2313 | // Examine .rela.opd to build info about function entry points. | |
2314 | ||
2315 | template<int size, bool big_endian> | |
2316 | void | |
2317 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2318 | size_t reloc_count, | |
2319 | const unsigned char* prelocs, | |
2320 | const unsigned char* plocal_syms) | |
2321 | { | |
2322 | if (size == 64) | |
cf43a2fe | 2323 | { |
0e123f69 AM |
2324 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2325 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2326 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2327 | Address expected_off = 0; |
2328 | bool regular = true; | |
2329 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2330 | |
2331 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2332 | { |
c9269dff AM |
2333 | Reltype reloc(prelocs); |
2334 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2335 | = reloc.get_r_info(); | |
2336 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2337 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2338 | { | |
2339 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2340 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2341 | bool is_ordinary; | |
2342 | unsigned int shndx; | |
2343 | if (r_sym < this->local_symbol_count()) | |
2344 | { | |
2345 | typename elfcpp::Sym<size, big_endian> | |
2346 | lsym(plocal_syms + r_sym * sym_size); | |
2347 | shndx = lsym.get_st_shndx(); | |
2348 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2349 | value = lsym.get_st_value(); | |
2350 | } | |
2351 | else | |
2352 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2353 | &is_ordinary); | |
2354 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2355 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2356 | if (i == 2) |
2357 | { | |
2358 | expected_off = reloc.get_r_offset(); | |
2359 | opd_ent_size = expected_off; | |
2360 | } | |
2361 | else if (expected_off != reloc.get_r_offset()) | |
2362 | regular = false; | |
2363 | expected_off += opd_ent_size; | |
2364 | } | |
2365 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2366 | { | |
2367 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2368 | regular = false; | |
2369 | } | |
2370 | else | |
2371 | { | |
2372 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2373 | this->name().c_str(), r_type); | |
2374 | regular = false; | |
c9269dff AM |
2375 | } |
2376 | } | |
ec4dbad3 AM |
2377 | if (reloc_count <= 2) |
2378 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2379 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2380 | regular = false; | |
2381 | if (!regular) | |
2382 | { | |
2383 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2384 | this->name().c_str()); | |
2385 | opd_ent_size = 0; | |
2386 | } | |
c9269dff AM |
2387 | } |
2388 | } | |
2389 | ||
5edad15d AM |
2390 | // Returns true if a code sequence loading the TOC entry at VALUE |
2391 | // relative to the TOC pointer can be converted into code calculating | |
2392 | // a TOC pointer relative offset. | |
2393 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2394 | ||
2395 | template<int size, bool big_endian> | |
2396 | bool | |
2397 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2398 | Target_powerpc<size, big_endian>* target, | |
2399 | Address* value) | |
2400 | { | |
2401 | if (size != 64) | |
2402 | return false; | |
2403 | ||
e666304e AM |
2404 | // With -mcmodel=medium code it is quite possible to have |
2405 | // toc-relative relocs referring to objects outside the TOC. | |
2406 | // Don't try to look at a non-existent TOC. | |
2407 | if (this->toc_shndx() == 0) | |
2408 | return false; | |
2409 | ||
5edad15d AM |
2410 | // Convert VALUE back to an address by adding got_base (see below), |
2411 | // then to an offset in the TOC by subtracting the TOC output | |
2412 | // section address and the TOC output offset. Since this TOC output | |
2413 | // section and the got output section are one and the same, we can | |
2414 | // omit adding and subtracting the output section address. | |
2415 | Address off = (*value + this->toc_base_offset() | |
2416 | - this->output_section_offset(this->toc_shndx())); | |
2417 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2418 | // TOC relative access to variables outside the TOC. Those of | |
2419 | // course can't be optimized. We also don't try to optimize code | |
2420 | // that is using a different object's TOC. | |
2421 | if (off >= this->section_size(this->toc_shndx())) | |
2422 | return false; | |
2423 | ||
2424 | if (this->no_toc_opt(off)) | |
2425 | return false; | |
2426 | ||
2427 | section_size_type vlen; | |
2428 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2429 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2430 | // The TOC pointer | |
2431 | Address got_base = (target->got_section()->output_section()->address() | |
2432 | + this->toc_base_offset()); | |
2433 | addr -= got_base; | |
857e829e | 2434 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2435 | return false; |
2436 | ||
2437 | *value = addr; | |
2438 | return true; | |
2439 | } | |
2440 | ||
c9b8abb7 AM |
2441 | template<int size, bool big_endian> |
2442 | bool | |
2443 | Powerpc_relobj<size, big_endian>::make_got_relative( | |
2444 | Target_powerpc<size, big_endian>* target, | |
2445 | const Symbol_value<size>* psymval, | |
2446 | Address addend, | |
2447 | Address* value) | |
2448 | { | |
2449 | Address addr = psymval->value(this, addend); | |
2450 | Address got_base = (target->got_section()->output_section()->address() | |
2451 | + this->toc_base_offset()); | |
2452 | addr -= got_base; | |
2453 | if (addr + 0x80008000 > 0xffffffff) | |
2454 | return false; | |
2455 | ||
2456 | *value = addr; | |
2457 | return true; | |
2458 | } | |
2459 | ||
5edad15d AM |
2460 | // Perform the Sized_relobj_file method, then set up opd info from |
2461 | // .opd relocs. | |
2462 | ||
c9269dff AM |
2463 | template<int size, bool big_endian> |
2464 | void | |
2465 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2466 | { | |
2467 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2468 | if (size == 64) | |
2469 | { | |
2470 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2471 | p != rd->relocs.end(); | |
2472 | ++p) | |
2473 | { | |
2474 | if (p->data_shndx == this->opd_shndx()) | |
2475 | { | |
ec4dbad3 AM |
2476 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2477 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2478 | if (opd_size != 0) | |
2479 | { | |
2480 | this->init_opd(opd_size); | |
2481 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2482 | rd->local_symbols->data()); | |
2483 | } | |
c9269dff AM |
2484 | break; |
2485 | } | |
cf43a2fe AM |
2486 | } |
2487 | } | |
cf43a2fe AM |
2488 | } |
2489 | ||
b4f7960d AM |
2490 | // Read the symbols then set up st_other vector. |
2491 | ||
2492 | template<int size, bool big_endian> | |
2493 | void | |
2494 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2495 | { | |
f35c4853 | 2496 | this->base_read_symbols(sd); |
724436fc AM |
2497 | if (this->input_file()->format() != Input_file::FORMAT_ELF) |
2498 | return; | |
b4f7960d AM |
2499 | if (size == 64) |
2500 | { | |
2501 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2502 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2503 | const unsigned int loccount = this->do_local_symbol_count(); | |
2504 | if (loccount != 0) | |
2505 | { | |
2506 | this->st_other_.resize(loccount); | |
2507 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2508 | off_t locsize = loccount * sym_size; | |
2509 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2510 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2511 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2512 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2513 | locsize, true, false); | |
2514 | psyms += sym_size; | |
2515 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2516 | { | |
2517 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2518 | unsigned char st_other = sym.get_st_other(); | |
2519 | this->st_other_[i] = st_other; | |
2520 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2521 | { | |
2522 | if (this->abiversion() == 0) | |
2523 | this->set_abiversion(2); | |
2524 | else if (this->abiversion() < 2) | |
2525 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2526 | " for ABI version 1"), | |
2527 | this->name().c_str(), i); | |
2528 | } | |
2529 | } | |
2530 | } | |
2531 | } | |
724436fc AM |
2532 | |
2533 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2534 | const unsigned char* ps = sd->section_headers->data() + shdr_size; | |
2535 | bool merge_attributes = false; | |
2536 | for (unsigned int i = 1; i < this->shnum(); ++i, ps += shdr_size) | |
2537 | { | |
2538 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2539 | switch (shdr.get_sh_type()) | |
2540 | { | |
2541 | case elfcpp::SHT_GNU_ATTRIBUTES: | |
2542 | { | |
2543 | gold_assert(this->attributes_section_data_ == NULL); | |
2544 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2545 | section_size_type section_size = | |
2546 | convert_to_section_size_type(shdr.get_sh_size()); | |
2547 | const unsigned char* view = | |
2548 | this->get_view(section_offset, section_size, true, false); | |
2549 | this->attributes_section_data_ = | |
2550 | new Attributes_section_data(view, section_size); | |
2551 | } | |
2552 | break; | |
2553 | ||
2554 | case elfcpp::SHT_SYMTAB: | |
2555 | { | |
2556 | // Sometimes an object has no contents except the section | |
2557 | // name string table and an empty symbol table with the | |
2558 | // undefined symbol. We don't want to merge | |
2559 | // processor-specific flags from such an object. | |
2560 | const typename elfcpp::Elf_types<size>::Elf_WXword sym_size = | |
2561 | elfcpp::Elf_sizes<size>::sym_size; | |
2562 | if (shdr.get_sh_size() > sym_size) | |
2563 | merge_attributes = true; | |
2564 | } | |
2565 | break; | |
2566 | ||
2567 | case elfcpp::SHT_STRTAB: | |
2568 | break; | |
2569 | ||
2570 | default: | |
2571 | merge_attributes = true; | |
2572 | break; | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | if (!merge_attributes) | |
2577 | { | |
2578 | // Should rarely happen. | |
2579 | delete this->attributes_section_data_; | |
2580 | this->attributes_section_data_ = NULL; | |
2581 | } | |
b4f7960d AM |
2582 | } |
2583 | ||
2584 | template<int size, bool big_endian> | |
2585 | void | |
2586 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2587 | { | |
2588 | this->e_flags_ |= ver; | |
2589 | if (this->abiversion() != 0) | |
2590 | { | |
2591 | Target_powerpc<size, big_endian>* target = | |
2592 | static_cast<Target_powerpc<size, big_endian>*>( | |
2593 | parameters->sized_target<size, big_endian>()); | |
2594 | if (target->abiversion() == 0) | |
2595 | target->set_abiversion(this->abiversion()); | |
2596 | else if (target->abiversion() != this->abiversion()) | |
2597 | gold_error(_("%s: ABI version %d is not compatible " | |
2598 | "with ABI version %d output"), | |
2599 | this->name().c_str(), | |
2600 | this->abiversion(), target->abiversion()); | |
2601 | ||
2602 | } | |
2603 | } | |
2604 | ||
f35c4853 | 2605 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2606 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2607 | ||
2608 | template<int size, bool big_endian> | |
2609 | void | |
2610 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2611 | { | |
f35c4853 | 2612 | this->base_read_symbols(sd); |
724436fc AM |
2613 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; |
2614 | const unsigned char* ps = | |
2615 | sd->section_headers->data() + shdr_size * (this->shnum() - 1); | |
2616 | for (unsigned int i = this->shnum(); i > 0; --i, ps -= shdr_size) | |
2617 | { | |
2618 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2619 | if (shdr.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES) | |
2620 | { | |
2621 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2622 | section_size_type section_size = | |
2623 | convert_to_section_size_type(shdr.get_sh_size()); | |
2624 | const unsigned char* view = | |
2625 | this->get_view(section_offset, section_size, true, false); | |
2626 | this->attributes_section_data_ = | |
2627 | new Attributes_section_data(view, section_size); | |
2628 | break; | |
2629 | } | |
2630 | } | |
dc3714f3 AM |
2631 | if (size == 64) |
2632 | { | |
dc3714f3 AM |
2633 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2634 | const unsigned char* namesu = sd->section_names->data(); | |
2635 | const char* names = reinterpret_cast<const char*>(namesu); | |
2636 | const unsigned char* s = NULL; | |
2637 | const unsigned char* opd; | |
2638 | section_size_type opd_size; | |
2639 | ||
2640 | // Find and read .opd section. | |
2641 | while (1) | |
2642 | { | |
2643 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2644 | sd->section_names_size, | |
2645 | s); | |
2646 | if (s == NULL) | |
2647 | return; | |
2648 | ||
2649 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2650 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2651 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2652 | { | |
b4f7960d AM |
2653 | if (this->abiversion() == 0) |
2654 | this->set_abiversion(1); | |
2655 | else if (this->abiversion() > 1) | |
2656 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2657 | this->name().c_str(), this->abiversion()); | |
2658 | ||
dc3714f3 AM |
2659 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2660 | this->opd_address_ = shdr.get_sh_addr(); | |
2661 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2662 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2663 | true, false); | |
2664 | break; | |
2665 | } | |
2666 | } | |
2667 | ||
2668 | // Build set of executable sections. | |
2669 | // Using a set is probably overkill. There is likely to be only | |
2670 | // a few executable sections, typically .init, .text and .fini, | |
2671 | // and they are generally grouped together. | |
2672 | typedef std::set<Sec_info> Exec_sections; | |
2673 | Exec_sections exec_sections; | |
2674 | s = pshdrs; | |
2675 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2676 | { | |
2677 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2678 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2679 | && ((shdr.get_sh_flags() | |
2680 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2681 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2682 | && shdr.get_sh_size() != 0) | |
2683 | { | |
2684 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2685 | shdr.get_sh_size(), i)); | |
2686 | } | |
2687 | } | |
2688 | if (exec_sections.empty()) | |
2689 | return; | |
2690 | ||
2691 | // Look over the OPD entries. This is complicated by the fact | |
2692 | // that some binaries will use two-word entries while others | |
2693 | // will use the standard three-word entries. In most cases | |
2694 | // the third word (the environment pointer for languages like | |
2695 | // Pascal) is unused and will be zero. If the third word is | |
2696 | // used it should not be pointing into executable sections, | |
2697 | // I think. | |
2698 | this->init_opd(opd_size); | |
2699 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2700 | { | |
2701 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2702 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2703 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2704 | if (val == 0) | |
2705 | // Chances are that this is the third word of an OPD entry. | |
2706 | continue; | |
2707 | typename Exec_sections::const_iterator e | |
2708 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2709 | if (e != exec_sections.begin()) | |
2710 | { | |
2711 | --e; | |
2712 | if (e->start <= val && val < e->start + e->len) | |
2713 | { | |
2714 | // We have an address in an executable section. | |
2715 | // VAL ought to be the function entry, set it up. | |
2716 | this->set_opd_ent(p - opd, e->shndx, val); | |
2717 | // Skip second word of OPD entry, the TOC pointer. | |
2718 | p += 8; | |
2719 | } | |
2720 | } | |
2721 | // If we didn't match any executable sections, we likely | |
2722 | // have a non-zero third word in the OPD entry. | |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
5edad15d AM |
2727 | // Relocate sections. |
2728 | ||
2729 | template<int size, bool big_endian> | |
2730 | void | |
2731 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2732 | const Symbol_table* symtab, const Layout* layout, | |
2733 | const unsigned char* pshdrs, Output_file* of, | |
2734 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2735 | { | |
2736 | unsigned int start = 1; | |
2737 | if (size == 64 | |
2738 | && this->relatoc_ != 0 | |
2739 | && !parameters->options().relocatable()) | |
2740 | { | |
2741 | // Relocate .toc first. | |
2742 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2743 | this->relatoc_, this->relatoc_); | |
2744 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2745 | 1, this->relatoc_ - 1); | |
2746 | start = this->relatoc_ + 1; | |
2747 | } | |
2748 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2749 | start, this->shnum() - 1); | |
2d7ad24e AM |
2750 | |
2751 | if (!parameters->options().output_is_position_independent()) | |
2752 | { | |
2753 | Target_powerpc<size, big_endian>* target | |
2754 | = static_cast<Target_powerpc<size, big_endian>*>( | |
2755 | parameters->sized_target<size, big_endian>()); | |
2756 | if (target->lplt_section() && target->lplt_section()->data_size() != 0) | |
2757 | { | |
2758 | const section_size_type offset = target->lplt_section()->offset(); | |
2759 | const section_size_type oview_size | |
2760 | = convert_to_section_size_type(target->lplt_section()->data_size()); | |
2761 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
2762 | ||
2763 | bool modified = false; | |
2764 | unsigned int nsyms = this->local_symbol_count(); | |
2765 | for (unsigned int i = 0; i < nsyms; i++) | |
2766 | if (this->local_has_plt_offset(i)) | |
2767 | { | |
2768 | Address value = this->local_symbol_value(i, 0); | |
2d7ad24e AM |
2769 | size_t off = this->local_plt_offset(i); |
2770 | elfcpp::Swap<size, big_endian>::writeval(oview + off, value); | |
2771 | modified = true; | |
2772 | } | |
2773 | if (modified) | |
2774 | of->write_output_view(offset, oview_size, oview); | |
2775 | } | |
2776 | } | |
5edad15d AM |
2777 | } |
2778 | ||
f43ba157 | 2779 | // Set up some symbols. |
26a4e9cb AM |
2780 | |
2781 | template<int size, bool big_endian> | |
2782 | void | |
f43ba157 AM |
2783 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2784 | Symbol_table* symtab, | |
2785 | Layout* layout) | |
26a4e9cb AM |
2786 | { |
2787 | if (size == 32) | |
2788 | { | |
bb66a627 AM |
2789 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2790 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2791 | // non-relative dynamic relocs). The proper value will be |
2792 | // updated later. | |
2793 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2794 | if (gotsym != NULL && gotsym->is_undefined()) | |
2795 | { | |
2796 | Target_powerpc<size, big_endian>* target = | |
2797 | static_cast<Target_powerpc<size, big_endian>*>( | |
2798 | parameters->sized_target<size, big_endian>()); | |
2799 | Output_data_got_powerpc<size, big_endian>* got | |
2800 | = target->got_section(symtab, layout); | |
2801 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2802 | Symbol_table::PREDEFINED, | |
2803 | got, 0, 0, | |
2804 | elfcpp::STT_OBJECT, | |
bb66a627 | 2805 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2806 | elfcpp::STV_HIDDEN, 0, |
2807 | false, false); | |
2808 | } | |
2809 | ||
2810 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2811 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2812 | if (sdasym != NULL && sdasym->is_undefined()) | |
2813 | { | |
2814 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2815 | Output_section* os | |
2816 | = layout->add_output_section_data(".sdata", 0, | |
2817 | elfcpp::SHF_ALLOC | |
2818 | | elfcpp::SHF_WRITE, | |
2819 | sdata, ORDER_SMALL_DATA, false); | |
2820 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2821 | Symbol_table::PREDEFINED, | |
2822 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2823 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2824 | 0, false, false); | |
2825 | } | |
2826 | } | |
b4f7960d AM |
2827 | else |
2828 | { | |
2829 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2830 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2831 | if (gotsym != NULL && gotsym->is_undefined()) | |
2832 | { | |
2833 | Target_powerpc<size, big_endian>* target = | |
2834 | static_cast<Target_powerpc<size, big_endian>*>( | |
2835 | parameters->sized_target<size, big_endian>()); | |
2836 | Output_data_got_powerpc<size, big_endian>* got | |
2837 | = target->got_section(symtab, layout); | |
2838 | symtab->define_in_output_data(".TOC.", NULL, | |
2839 | Symbol_table::PREDEFINED, | |
2840 | got, 0x8000, 0, | |
2841 | elfcpp::STT_OBJECT, | |
2842 | elfcpp::STB_LOCAL, | |
2843 | elfcpp::STV_HIDDEN, 0, | |
2844 | false, false); | |
2845 | } | |
2846 | } | |
34e0882b AM |
2847 | |
2848 | this->tls_get_addr_ = symtab->lookup("__tls_get_addr"); | |
2849 | if (parameters->options().tls_get_addr_optimize() | |
2850 | && this->tls_get_addr_ != NULL | |
2851 | && this->tls_get_addr_->in_reg()) | |
2852 | this->tls_get_addr_opt_ = symtab->lookup("__tls_get_addr_opt"); | |
2853 | if (this->tls_get_addr_opt_ != NULL) | |
2854 | { | |
2855 | if (this->tls_get_addr_->is_undefined() | |
2856 | || this->tls_get_addr_->is_from_dynobj()) | |
2857 | { | |
2858 | // Make it seem as if references to __tls_get_addr are | |
2859 | // really to __tls_get_addr_opt, so the latter symbol is | |
2860 | // made dynamic, not the former. | |
2861 | this->tls_get_addr_->clear_in_reg(); | |
2862 | this->tls_get_addr_opt_->set_in_reg(); | |
2863 | } | |
2864 | // We have a non-dynamic definition for __tls_get_addr. | |
2865 | // Make __tls_get_addr_opt the same, if it does not already have | |
2866 | // a non-dynamic definition. | |
2867 | else if (this->tls_get_addr_opt_->is_undefined() | |
2868 | || this->tls_get_addr_opt_->is_from_dynobj()) | |
2869 | { | |
2870 | Sized_symbol<size>* from | |
2871 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_); | |
2872 | Sized_symbol<size>* to | |
2873 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_opt_); | |
2874 | symtab->clone<size>(to, from); | |
2875 | } | |
2876 | } | |
26a4e9cb AM |
2877 | } |
2878 | ||
cf43a2fe AM |
2879 | // Set up PowerPC target specific relobj. |
2880 | ||
2881 | template<int size, bool big_endian> | |
2882 | Object* | |
2883 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2884 | const std::string& name, | |
2885 | Input_file* input_file, | |
2886 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2887 | { | |
2888 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2889 | // ET_EXEC files are valid input for --just-symbols/-R, |
2890 | // and we treat them as relocatable objects. | |
2891 | if (et == elfcpp::ET_REL | |
2892 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2893 | { |
2894 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2895 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2896 | obj->setup(); |
2897 | return obj; | |
2898 | } | |
2899 | else if (et == elfcpp::ET_DYN) | |
2900 | { | |
dc3714f3 AM |
2901 | Powerpc_dynobj<size, big_endian>* obj = |
2902 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2903 | obj->setup(); |
2904 | return obj; | |
2905 | } | |
2906 | else | |
2907 | { | |
c9269dff | 2908 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2909 | return NULL; |
2910 | } | |
2911 | } | |
2912 | ||
2913 | template<int size, bool big_endian> | |
2914 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2915 | { | |
2916 | public: | |
2917 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2918 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2919 | ||
2920 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2921 | : Output_data_got<size, big_endian>(), | |
2922 | symtab_(symtab), layout_(layout), | |
2923 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2924 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2925 | { |
2926 | if (size == 64) | |
2927 | this->set_addralign(256); | |
2928 | } | |
cf43a2fe | 2929 | |
e84fe78f AM |
2930 | // Override all the Output_data_got methods we use so as to first call |
2931 | // reserve_ent(). | |
2932 | bool | |
2933 | add_global(Symbol* gsym, unsigned int got_type) | |
2934 | { | |
2935 | this->reserve_ent(); | |
2936 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2937 | } | |
2938 | ||
2939 | bool | |
2940 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2941 | { | |
2942 | this->reserve_ent(); | |
2943 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2944 | } | |
2945 | ||
2946 | bool | |
2947 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2948 | { return this->add_global_plt(gsym, got_type); } | |
2949 | ||
2950 | void | |
2951 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2952 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2953 | { | |
2954 | this->reserve_ent(); | |
2955 | Output_data_got<size, big_endian>:: | |
2956 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2957 | } | |
2958 | ||
2959 | void | |
2960 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2961 | Output_data_reloc_generic* rel_dyn, | |
2962 | unsigned int r_type_1, unsigned int r_type_2) | |
2963 | { | |
aacb3b6d AM |
2964 | if (gsym->has_got_offset(got_type)) |
2965 | return; | |
2966 | ||
e84fe78f AM |
2967 | this->reserve_ent(2); |
2968 | Output_data_got<size, big_endian>:: | |
2969 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2970 | } | |
2971 | ||
2972 | bool | |
2973 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2974 | { | |
2975 | this->reserve_ent(); | |
2976 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2977 | got_type); | |
2978 | } | |
2979 | ||
2980 | bool | |
2981 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2982 | { | |
2983 | this->reserve_ent(); | |
2984 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2985 | got_type); | |
2986 | } | |
2987 | ||
2988 | bool | |
2989 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2990 | { return this->add_local_plt(object, sym_index, got_type); } | |
2991 | ||
2992 | void | |
2993 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2994 | unsigned int got_type, | |
2995 | Output_data_reloc_generic* rel_dyn, | |
2996 | unsigned int r_type) | |
2997 | { | |
aacb3b6d AM |
2998 | if (object->local_has_got_offset(sym_index, got_type)) |
2999 | return; | |
3000 | ||
e84fe78f AM |
3001 | this->reserve_ent(2); |
3002 | Output_data_got<size, big_endian>:: | |
3003 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
3004 | } | |
3005 | ||
3006 | unsigned int | |
3007 | add_constant(Valtype constant) | |
3008 | { | |
3009 | this->reserve_ent(); | |
3010 | return Output_data_got<size, big_endian>::add_constant(constant); | |
3011 | } | |
3012 | ||
dd93cd0a AM |
3013 | unsigned int |
3014 | add_constant_pair(Valtype c1, Valtype c2) | |
3015 | { | |
3016 | this->reserve_ent(2); | |
e84fe78f | 3017 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
3018 | } |
3019 | ||
3020 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
3021 | unsigned int |
3022 | g_o_t() const | |
3023 | { | |
3024 | return this->got_offset(this->header_index_); | |
42cacb20 | 3025 | } |
cf43a2fe | 3026 | |
dd93cd0a AM |
3027 | // Offset of base used to access the GOT/TOC. |
3028 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 3029 | Valtype |
dd93cd0a AM |
3030 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
3031 | { | |
3032 | if (size == 32) | |
3033 | return this->g_o_t(); | |
3034 | else | |
3035 | return (this->output_section()->address() | |
3036 | + object->toc_base_offset() | |
3037 | - this->address()); | |
3038 | } | |
3039 | ||
cf43a2fe AM |
3040 | // Ensure our GOT has a header. |
3041 | void | |
3042 | set_final_data_size() | |
3043 | { | |
3044 | if (this->header_ent_cnt_ != 0) | |
3045 | this->make_header(); | |
3046 | Output_data_got<size, big_endian>::set_final_data_size(); | |
3047 | } | |
3048 | ||
3049 | // First word of GOT header needs some values that are not | |
3050 | // handled by Output_data_got so poke them in here. | |
3051 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
3052 | void | |
3053 | do_write(Output_file* of) | |
3054 | { | |
c9824451 AM |
3055 | Valtype val = 0; |
3056 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
3057 | val = this->layout_->dynamic_section()->address(); | |
3058 | if (size == 64) | |
3059 | val = this->output_section()->address() + 0x8000; | |
3060 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
3061 | Output_data_got<size, big_endian>::do_write(of); |
3062 | } | |
3063 | ||
3064 | private: | |
3065 | void | |
3066 | reserve_ent(unsigned int cnt = 1) | |
3067 | { | |
3068 | if (this->header_ent_cnt_ == 0) | |
3069 | return; | |
3070 | if (this->num_entries() + cnt > this->header_index_) | |
3071 | this->make_header(); | |
3072 | } | |
3073 | ||
3074 | void | |
3075 | make_header() | |
3076 | { | |
3077 | this->header_ent_cnt_ = 0; | |
3078 | this->header_index_ = this->num_entries(); | |
3079 | if (size == 32) | |
3080 | { | |
3081 | Output_data_got<size, big_endian>::add_constant(0); | |
3082 | Output_data_got<size, big_endian>::add_constant(0); | |
3083 | Output_data_got<size, big_endian>::add_constant(0); | |
3084 | ||
3085 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
3086 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
3087 | if (gotsym != NULL) | |
3088 | { | |
3089 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
3090 | sym->set_value(this->g_o_t()); | |
3091 | } | |
3092 | else | |
3093 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
3094 | Symbol_table::PREDEFINED, | |
3095 | this, this->g_o_t(), 0, | |
3096 | elfcpp::STT_OBJECT, | |
3097 | elfcpp::STB_LOCAL, | |
3098 | elfcpp::STV_HIDDEN, 0, | |
3099 | false, false); | |
cf43a2fe AM |
3100 | } |
3101 | else | |
3102 | Output_data_got<size, big_endian>::add_constant(0); | |
3103 | } | |
3104 | ||
3105 | // Stashed pointers. | |
3106 | Symbol_table* symtab_; | |
3107 | Layout* layout_; | |
3108 | ||
3109 | // GOT header size. | |
3110 | unsigned int header_ent_cnt_; | |
3111 | // GOT header index. | |
3112 | unsigned int header_index_; | |
42cacb20 DE |
3113 | }; |
3114 | ||
3115 | // Get the GOT section, creating it if necessary. | |
3116 | ||
3117 | template<int size, bool big_endian> | |
cf43a2fe | 3118 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
3119 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
3120 | Layout* layout) | |
3121 | { | |
3122 | if (this->got_ == NULL) | |
3123 | { | |
3124 | gold_assert(symtab != NULL && layout != NULL); | |
3125 | ||
cf43a2fe AM |
3126 | this->got_ |
3127 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
3128 | |
3129 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
3130 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 3131 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
3132 | } |
3133 | ||
3134 | return this->got_; | |
3135 | } | |
3136 | ||
3137 | // Get the dynamic reloc section, creating it if necessary. | |
3138 | ||
3139 | template<int size, bool big_endian> | |
3140 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3141 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
3142 | { | |
3143 | if (this->rela_dyn_ == NULL) | |
3144 | { | |
3145 | gold_assert(layout != NULL); | |
3146 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
3147 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
3148 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
3149 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
3150 | } |
3151 | return this->rela_dyn_; | |
3152 | } | |
3153 | ||
b3ccdeb5 AM |
3154 | // Similarly, but for ifunc symbols get the one for ifunc. |
3155 | ||
3156 | template<int size, bool big_endian> | |
3157 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3158 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
3159 | Layout* layout, | |
3160 | bool for_ifunc) | |
3161 | { | |
3162 | if (!for_ifunc) | |
3163 | return this->rela_dyn_section(layout); | |
3164 | ||
3165 | if (this->iplt_ == NULL) | |
3166 | this->make_iplt_section(symtab, layout); | |
3167 | return this->iplt_->rel_plt(); | |
3168 | } | |
3169 | ||
ec661b9d AM |
3170 | class Stub_control |
3171 | { | |
3172 | public: | |
3173 | // Determine the stub group size. The group size is the absolute | |
3174 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 3175 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 3176 | // the stubbed branches. |
1c3a5fbe AM |
3177 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
3178 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
3179 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
3180 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
3181 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 3182 | { |
ec661b9d AM |
3183 | } |
3184 | ||
3185 | // Return true iff input section can be handled by current stub | |
3186 | // group. | |
3187 | bool | |
3188 | can_add_to_stub_group(Output_section* o, | |
3189 | const Output_section::Input_section* i, | |
3190 | bool has14); | |
3191 | ||
3192 | const Output_section::Input_section* | |
3193 | owner() | |
3194 | { return owner_; } | |
3195 | ||
3196 | Output_section* | |
3197 | output_section() | |
3198 | { return output_section_; } | |
3199 | ||
a20605cf AM |
3200 | void |
3201 | set_output_and_owner(Output_section* o, | |
3202 | const Output_section::Input_section* i) | |
3203 | { | |
3204 | this->output_section_ = o; | |
3205 | this->owner_ = i; | |
3206 | } | |
3207 | ||
ec661b9d AM |
3208 | private: |
3209 | typedef enum | |
3210 | { | |
1c3a5fbe | 3211 | // Initial state. |
ec661b9d | 3212 | NO_GROUP, |
1c3a5fbe | 3213 | // Adding group sections before the stubs. |
ec661b9d | 3214 | FINDING_STUB_SECTION, |
1c3a5fbe | 3215 | // Adding group sections after the stubs. |
ec661b9d AM |
3216 | HAS_STUB_SECTION |
3217 | } State; | |
3218 | ||
ec661b9d | 3219 | uint32_t stub_group_size_; |
a5018ae5 | 3220 | bool stubs_always_after_branch_; |
ec661b9d | 3221 | bool suppress_size_errors_; |
1c3a5fbe AM |
3222 | // True if a stub group can serve multiple output sections. |
3223 | bool multi_os_; | |
3224 | State state_; | |
8a37735f AM |
3225 | // Current max size of group. Starts at stub_group_size_ but is |
3226 | // reduced to stub_group_size_/1024 on seeing a section with | |
3227 | // external conditional branches. | |
3228 | uint32_t group_size_; | |
a5018ae5 | 3229 | uint64_t group_start_addr_; |
57f6d32d AM |
3230 | // owner_ and output_section_ specify the section to which stubs are |
3231 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
3232 | const Output_section::Input_section* owner_; |
3233 | Output_section* output_section_; | |
3234 | }; | |
3235 | ||
0cfdc767 | 3236 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
3237 | // group. Sections are presented to this function in order, |
3238 | // so the first section is the head of the group. | |
ec661b9d AM |
3239 | |
3240 | bool | |
3241 | Stub_control::can_add_to_stub_group(Output_section* o, | |
3242 | const Output_section::Input_section* i, | |
3243 | bool has14) | |
3244 | { | |
ec661b9d AM |
3245 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
3246 | uint64_t this_size; | |
3247 | uint64_t start_addr = o->address(); | |
3248 | ||
3249 | if (whole_sec) | |
3250 | // .init and .fini sections are pasted together to form a single | |
3251 | // function. We can't be adding stubs in the middle of the function. | |
3252 | this_size = o->data_size(); | |
3253 | else | |
3254 | { | |
3255 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
3256 | this_size = i->data_size(); | |
3257 | } | |
57f6d32d | 3258 | |
a5018ae5 | 3259 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
3260 | uint32_t group_size = this->stub_group_size_; |
3261 | if (has14) | |
3262 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 3263 | |
57f6d32d | 3264 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
3265 | gold_warning(_("%s:%s exceeds group size"), |
3266 | i->relobj()->name().c_str(), | |
3267 | i->relobj()->section_name(i->shndx()).c_str()); | |
3268 | ||
afe002dd AM |
3269 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
3270 | has14 ? " 14bit" : "", | |
3271 | i->relobj()->name().c_str(), | |
3272 | i->relobj()->section_name(i->shndx()).c_str(), | |
3273 | (long long) this_size, | |
a5018ae5 AM |
3274 | (this->state_ == NO_GROUP |
3275 | ? this_size | |
3276 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 3277 | |
1c3a5fbe AM |
3278 | if (this->state_ == NO_GROUP) |
3279 | { | |
3280 | // Only here on very first use of Stub_control | |
3281 | this->owner_ = i; | |
3282 | this->output_section_ = o; | |
3283 | this->state_ = FINDING_STUB_SECTION; | |
3284 | this->group_size_ = group_size; | |
3285 | this->group_start_addr_ = start_addr; | |
3286 | return true; | |
3287 | } | |
3288 | else if (!this->multi_os_ && this->output_section_ != o) | |
3289 | ; | |
3290 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 3291 | { |
a5018ae5 | 3292 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 3293 | // group? |
a5018ae5 | 3294 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 3295 | return true; |
ec661b9d | 3296 | } |
a5018ae5 | 3297 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 3298 | { |
a5018ae5 AM |
3299 | if ((whole_sec && this->output_section_ == o) |
3300 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3301 | { |
a5018ae5 | 3302 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
3303 | this->owner_ = i; |
3304 | this->output_section_ = o; | |
a5018ae5 | 3305 | return true; |
57f6d32d | 3306 | } |
a5018ae5 AM |
3307 | // The group before the stubs has reached maximum size. |
3308 | // Now see about adding sections after the stubs to the | |
3309 | // group. If the current section has a 14-bit branch and | |
3310 | // the group before the stubs exceeds group_size_ (because | |
3311 | // they didn't have 14-bit branches), don't add sections | |
3312 | // after the stubs: The size of stubs for such a large | |
3313 | // group may exceed the reach of a 14-bit branch. | |
3314 | if (!this->stubs_always_after_branch_ | |
3315 | && this_size <= this->group_size_ | |
3316 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3317 | { |
a5018ae5 AM |
3318 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
3319 | this->state_ = HAS_STUB_SECTION; | |
3320 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
3321 | return true; |
3322 | } | |
ec661b9d | 3323 | } |
a5018ae5 AM |
3324 | else |
3325 | gold_unreachable(); | |
57f6d32d | 3326 | |
1c3a5fbe AM |
3327 | gold_debug(DEBUG_TARGET, |
3328 | !this->multi_os_ && this->output_section_ != o | |
3329 | ? "nope, new output section\n" | |
3330 | : "nope, didn't fit\n"); | |
afe002dd | 3331 | |
57f6d32d AM |
3332 | // The section fails to fit in the current group. Set up a few |
3333 | // things for the next group. owner_ and output_section_ will be | |
3334 | // set later after we've retrieved those values for the current | |
3335 | // group. | |
3336 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 3337 | this->group_size_ = group_size; |
a5018ae5 | 3338 | this->group_start_addr_ = start_addr; |
57f6d32d | 3339 | return false; |
ec661b9d AM |
3340 | } |
3341 | ||
3342 | // Look over all the input sections, deciding where to place stubs. | |
3343 | ||
3344 | template<int size, bool big_endian> | |
3345 | void | |
3346 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
3347 | const Task*, |
3348 | bool no_size_errors) | |
ec661b9d | 3349 | { |
1c3a5fbe AM |
3350 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
3351 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
3352 | |
3353 | // Group input sections and insert stub table | |
a3e60ddb AM |
3354 | Stub_table_owner* table_owner = NULL; |
3355 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
3356 | Layout::Section_list section_list; |
3357 | layout->get_executable_sections(§ion_list); | |
3358 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
3359 | for (Layout::Section_list::iterator o = section_list.begin(); |
3360 | o != section_list.end(); | |
ec661b9d AM |
3361 | ++o) |
3362 | { | |
3363 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
3364 | for (Input_section_list::const_iterator i |
3365 | = (*o)->input_sections().begin(); | |
3366 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
3367 | ++i) |
3368 | { | |
a3e60ddb AM |
3369 | if (i->is_input_section() |
3370 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
3371 | { |
3372 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
3373 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
3374 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
3375 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
3376 | { | |
a3e60ddb AM |
3377 | table_owner->output_section = stub_control.output_section(); |
3378 | table_owner->owner = stub_control.owner(); | |
a20605cf | 3379 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 3380 | table_owner = NULL; |
ec661b9d | 3381 | } |
a3e60ddb AM |
3382 | if (table_owner == NULL) |
3383 | { | |
3384 | table_owner = new Stub_table_owner; | |
3385 | tables.push_back(table_owner); | |
3386 | } | |
3387 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
3388 | } |
3389 | } | |
3390 | } | |
a3e60ddb | 3391 | if (table_owner != NULL) |
0cfdc767 | 3392 | { |
a5018ae5 AM |
3393 | table_owner->output_section = stub_control.output_section(); |
3394 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
3395 | } |
3396 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
3397 | t != tables.end(); | |
3398 | ++t) | |
3399 | { | |
3400 | Stub_table<size, big_endian>* stub_table; | |
3401 | ||
3402 | if ((*t)->owner->is_input_section()) | |
3403 | stub_table = new Stub_table<size, big_endian>(this, | |
3404 | (*t)->output_section, | |
590b87ff AM |
3405 | (*t)->owner, |
3406 | this->stub_tables_.size()); | |
a3e60ddb AM |
3407 | else if ((*t)->owner->is_relaxed_input_section()) |
3408 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
3409 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 3410 | else |
a3e60ddb AM |
3411 | gold_unreachable(); |
3412 | this->stub_tables_.push_back(stub_table); | |
3413 | delete *t; | |
0cfdc767 | 3414 | } |
ec661b9d AM |
3415 | } |
3416 | ||
32f59844 | 3417 | template<int size> |
a3e60ddb AM |
3418 | static unsigned long |
3419 | max_branch_delta (unsigned int r_type) | |
3420 | { | |
3421 | if (r_type == elfcpp::R_POWERPC_REL14 | |
3422 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
3423 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
3424 | return 1L << 15; | |
3425 | if (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 3426 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
a3e60ddb AM |
3427 | || r_type == elfcpp::R_PPC_PLTREL24 |
3428 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
3429 | return 1L << 25; | |
3430 | return 0; | |
3431 | } | |
3432 | ||
7e57d19e AM |
3433 | // Return whether this branch is going via a plt call stub. |
3434 | ||
3435 | template<int size, bool big_endian> | |
3436 | bool | |
3437 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
3438 | Powerpc_relobj<size, big_endian>* ppc_object, | |
3439 | unsigned int shndx, | |
3440 | Address offset, | |
3441 | Target_powerpc* target, | |
3442 | Symbol_table* symtab) | |
3443 | { | |
3444 | if (this->object_ != ppc_object | |
3445 | || this->shndx_ != shndx | |
3446 | || this->offset_ != offset) | |
3447 | return false; | |
3448 | ||
3449 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3450 | if (sym != NULL && sym->is_forwarder()) | |
3451 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3452 | if (target->replace_tls_get_addr(sym)) |
3453 | sym = target->tls_get_addr_opt(); | |
7e57d19e AM |
3454 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
3455 | if (gsym != NULL | |
7ee7ff70 AM |
3456 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3457 | && !target->is_elfv2_localentry0(gsym)) | |
3458 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3459 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3460 | { |
3461 | this->tocsave_ = 1; | |
3462 | return true; | |
3463 | } | |
3464 | return false; | |
3465 | } | |
3466 | ||
ec661b9d AM |
3467 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3468 | ||
3469 | template<int size, bool big_endian> | |
a3e60ddb | 3470 | bool |
ec661b9d AM |
3471 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3472 | Stub_table<size, big_endian>* stub_table, | |
3473 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3474 | Symbol_table* symtab) const | |
3475 | { | |
3476 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
88b8e639 AM |
3477 | Target_powerpc<size, big_endian>* target = |
3478 | static_cast<Target_powerpc<size, big_endian>*>( | |
3479 | parameters->sized_target<size, big_endian>()); | |
34e0882b AM |
3480 | if (sym != NULL && sym->is_forwarder()) |
3481 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3482 | if (target->replace_tls_get_addr(sym)) |
3483 | sym = target->tls_get_addr_opt(); | |
34e0882b | 3484 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
dc60b26d AM |
3485 | bool ok = true; |
3486 | ||
ec661b9d | 3487 | if (gsym != NULL |
88b8e639 | 3488 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3489 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3490 | { | |
9055360d AM |
3491 | if (size == 64 |
3492 | && gsym != NULL | |
3493 | && target->abiversion() >= 2 | |
3494 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3495 | && !is_branch_reloc<size>(this->r_type_)) |
9055360d AM |
3496 | target->glink_section()->add_global_entry(gsym); |
3497 | else | |
ec661b9d | 3498 | { |
64b5d6d7 AM |
3499 | if (stub_table == NULL |
3500 | && !(size == 32 | |
3501 | && gsym != NULL | |
3502 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3503 | && !is_branch_reloc<size>(this->r_type_))) |
9055360d AM |
3504 | stub_table = this->object_->stub_table(this->shndx_); |
3505 | if (stub_table == NULL) | |
3506 | { | |
64b5d6d7 AM |
3507 | // This is a ref from a data section to an ifunc symbol, |
3508 | // or a non-branch reloc for which we always want to use | |
3509 | // one set of stubs for resolving function addresses. | |
9055360d AM |
3510 | stub_table = ifunc_stub_table; |
3511 | } | |
3512 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3513 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3514 | if (from != invalid_address) | |
3515 | from += (this->object_->output_section(this->shndx_)->address() | |
3516 | + this->offset_); | |
9055360d | 3517 | if (gsym != NULL) |
dc60b26d AM |
3518 | ok = stub_table->add_plt_call_entry(from, |
3519 | this->object_, gsym, | |
7e57d19e AM |
3520 | this->r_type_, this->addend_, |
3521 | this->tocsave_); | |
9055360d | 3522 | else |
dc60b26d AM |
3523 | ok = stub_table->add_plt_call_entry(from, |
3524 | this->object_, this->r_sym_, | |
7e57d19e AM |
3525 | this->r_type_, this->addend_, |
3526 | this->tocsave_); | |
ec661b9d | 3527 | } |
ec661b9d AM |
3528 | } |
3529 | else | |
3530 | { | |
32f59844 | 3531 | Address max_branch_offset = max_branch_delta<size>(this->r_type_); |
a3e60ddb AM |
3532 | if (max_branch_offset == 0) |
3533 | return true; | |
ec661b9d AM |
3534 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3535 | gold_assert(from != invalid_address); | |
3536 | from += (this->object_->output_section(this->shndx_)->address() | |
3537 | + this->offset_); | |
3538 | Address to; | |
fa40fbe4 | 3539 | unsigned int other; |
ec661b9d AM |
3540 | if (gsym != NULL) |
3541 | { | |
3542 | switch (gsym->source()) | |
3543 | { | |
3544 | case Symbol::FROM_OBJECT: | |
3545 | { | |
3546 | Object* symobj = gsym->object(); | |
3547 | if (symobj->is_dynamic() | |
3548 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3549 | return true; |
ec661b9d AM |
3550 | bool is_ordinary; |
3551 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3552 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3553 | return true; |
ec661b9d AM |
3554 | } |
3555 | break; | |
3556 | ||
3557 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3558 | return true; |
ec661b9d AM |
3559 | |
3560 | default: | |
3561 | break; | |
3562 | } | |
3563 | Symbol_table::Compute_final_value_status status; | |
3564 | to = symtab->compute_final_value<size>(gsym, &status); | |
3565 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3566 | return true; |
fa40fbe4 | 3567 | other = gsym->nonvis() >> 3; |
ec661b9d AM |
3568 | } |
3569 | else | |
3570 | { | |
3571 | const Symbol_value<size>* psymval | |
3572 | = this->object_->local_symbol(this->r_sym_); | |
3573 | Symbol_value<size> symval; | |
0f125432 CC |
3574 | if (psymval->is_section_symbol()) |
3575 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3576 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3577 | typename ObjType::Compute_final_local_value_status status | |
3578 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3579 | &symval, symtab); | |
3580 | if (status != ObjType::CFLV_OK | |
3581 | || !symval.has_output_value()) | |
a3e60ddb | 3582 | return true; |
ec661b9d | 3583 | to = symval.value(this->object_, 0); |
fa40fbe4 | 3584 | other = this->object_->st_other(this->r_sym_) >> 5; |
ec661b9d | 3585 | } |
cbcb23fa AM |
3586 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3587 | to += this->addend_; | |
ec661b9d AM |
3588 | if (stub_table == NULL) |
3589 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3590 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3591 | { |
3592 | unsigned int dest_shndx; | |
1611bc4a AM |
3593 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3594 | &to, &dest_shndx)) | |
3595 | return true; | |
ec661b9d | 3596 | } |
fa40fbe4 AM |
3597 | unsigned int local_ent = 0; |
3598 | if (size == 64 | |
3599 | && this->r_type_ != elfcpp::R_PPC64_REL24_NOTOC) | |
3600 | local_ent = elfcpp::ppc64_decode_local_entry(other); | |
3601 | Address delta = to + local_ent - from; | |
32f59844 AM |
3602 | if (delta + max_branch_offset >= 2 * max_branch_offset |
3603 | || (size == 64 | |
3604 | && this->r_type_ == elfcpp::R_PPC64_REL24_NOTOC | |
3605 | && (gsym != NULL | |
3606 | ? this->object_->ppc64_needs_toc(gsym) | |
3607 | : this->object_->ppc64_needs_toc(this->r_sym_)))) | |
ec661b9d | 3608 | { |
0cfdc767 AM |
3609 | if (stub_table == NULL) |
3610 | { | |
3611 | gold_warning(_("%s:%s: branch in non-executable section," | |
3612 | " no long branch stub for you"), | |
3613 | this->object_->name().c_str(), | |
3614 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3615 | return true; |
0cfdc767 | 3616 | } |
d49044c7 AM |
3617 | bool save_res = (size == 64 |
3618 | && gsym != NULL | |
3619 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3620 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3621 | ok = stub_table->add_long_branch_entry(this->object_, |
3622 | this->r_type_, | |
fa40fbe4 | 3623 | from, to, other, save_res); |
ec661b9d AM |
3624 | } |
3625 | } | |
dc60b26d AM |
3626 | if (!ok) |
3627 | gold_debug(DEBUG_TARGET, | |
3628 | "branch at %s:%s+%#lx\n" | |
3629 | "can't reach stub attached to %s:%s", | |
3630 | this->object_->name().c_str(), | |
3631 | this->object_->section_name(this->shndx_).c_str(), | |
3632 | (unsigned long) this->offset_, | |
3633 | stub_table->relobj()->name().c_str(), | |
3634 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3635 | ||
3636 | return ok; | |
ec661b9d AM |
3637 | } |
3638 | ||
3639 | // Relaxation hook. This is where we do stub generation. | |
3640 | ||
3641 | template<int size, bool big_endian> | |
3642 | bool | |
3643 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3644 | const Input_objects*, | |
3645 | Symbol_table* symtab, | |
3646 | Layout* layout, | |
3647 | const Task* task) | |
3648 | { | |
3649 | unsigned int prev_brlt_size = 0; | |
3650 | if (pass == 1) | |
ec661b9d | 3651 | { |
b4f7960d AM |
3652 | bool thread_safe |
3653 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3654 | if (size == 64 | |
3655 | && this->abiversion() < 2 | |
3656 | && !thread_safe | |
3657 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3658 | { |
e2458743 | 3659 | static const char* const thread_starter[] = |
9e69ed50 AM |
3660 | { |
3661 | "pthread_create", | |
3662 | /* libstdc++ */ | |
3663 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3664 | /* librt */ | |
3665 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3666 | "mq_notify", "create_timer", | |
3667 | /* libanl */ | |
3668 | "getaddrinfo_a", | |
3669 | /* libgomp */ | |
80272b8c | 3670 | "GOMP_parallel", |
9e69ed50 | 3671 | "GOMP_parallel_start", |
80272b8c | 3672 | "GOMP_parallel_loop_static", |
9e69ed50 | 3673 | "GOMP_parallel_loop_static_start", |
80272b8c | 3674 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3675 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3676 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3677 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3678 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3679 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3680 | "GOMP_parallel_sections", |
43819297 | 3681 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3682 | /* libgo */ |
3683 | "__go_go", | |
9e69ed50 AM |
3684 | }; |
3685 | ||
e2458743 AM |
3686 | if (parameters->options().shared()) |
3687 | thread_safe = true; | |
3688 | else | |
9e69ed50 | 3689 | { |
e2458743 AM |
3690 | for (unsigned int i = 0; |
3691 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3692 | i++) | |
3693 | { | |
3694 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3695 | thread_safe = (sym != NULL | |
3696 | && sym->in_reg() | |
3697 | && sym->in_real_elf()); | |
3698 | if (thread_safe) | |
3699 | break; | |
3700 | } | |
9e69ed50 | 3701 | } |
ec661b9d | 3702 | } |
9e69ed50 | 3703 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3704 | } |
3705 | ||
3706 | if (pass == 1) | |
3707 | { | |
3708 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3709 | bool no_size_errors = true; | |
3710 | if (this->stub_group_size_ == 1) | |
3711 | this->stub_group_size_ = 0x1c00000; | |
3712 | else if (this->stub_group_size_ == -1) | |
3713 | this->stub_group_size_ = -0x1e00000; | |
3714 | else | |
3715 | no_size_errors = false; | |
3716 | this->group_sections(layout, task, no_size_errors); | |
3717 | } | |
3718 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3719 | { | |
3720 | this->branch_lookup_table_.clear(); | |
3721 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3722 | p != this->stub_tables_.end(); | |
3723 | ++p) | |
3724 | { | |
3725 | (*p)->clear_stubs(true); | |
3726 | } | |
3727 | this->stub_tables_.clear(); | |
3728 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3729 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3730 | program_name, this->stub_group_size_); |
3731 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3732 | } |
3733 | ||
3734 | // We need address of stub tables valid for make_stub. | |
3735 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3736 | p != this->stub_tables_.end(); | |
3737 | ++p) | |
3738 | { | |
3739 | const Powerpc_relobj<size, big_endian>* object | |
3740 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3741 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3742 | gold_assert(off != invalid_address); | |
3743 | Output_section* os = (*p)->output_section(); | |
3744 | (*p)->set_address_and_size(os, off); | |
3745 | } | |
3746 | ||
9e69ed50 AM |
3747 | if (pass != 1) |
3748 | { | |
3749 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3750 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3751 | this->branch_lookup_table_.clear(); | |
3752 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3753 | p != this->stub_tables_.end(); | |
3754 | ++p) | |
3755 | { | |
a3e60ddb | 3756 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3757 | } |
3758 | } | |
3759 | ||
3760 | // Build all the stubs. | |
a3e60ddb | 3761 | this->relax_failed_ = false; |
ec661b9d AM |
3762 | Stub_table<size, big_endian>* ifunc_stub_table |
3763 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3764 | Stub_table<size, big_endian>* one_stub_table | |
3765 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3766 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3767 | b != this->branch_info_.end(); | |
3768 | b++) | |
3769 | { | |
a3e60ddb AM |
3770 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3771 | && !this->relax_failed_) | |
3772 | { | |
3773 | this->relax_failed_ = true; | |
3774 | this->relax_fail_count_++; | |
3775 | if (this->relax_fail_count_ < 3) | |
3776 | return true; | |
3777 | } | |
ec661b9d | 3778 | } |
32f59844 AM |
3779 | bool do_resize = false; |
3780 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3781 | p != this->stub_tables_.end(); | |
3782 | ++p) | |
3783 | if ((*p)->need_resize()) | |
3784 | { | |
3785 | do_resize = true; | |
3786 | break; | |
3787 | } | |
3788 | if (do_resize) | |
3789 | { | |
3790 | this->branch_lookup_table_.clear(); | |
3791 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3792 | p != this->stub_tables_.end(); | |
3793 | ++p) | |
3794 | (*p)->set_resizing(true); | |
3795 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3796 | b != this->branch_info_.end(); | |
3797 | b++) | |
3798 | { | |
3799 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) | |
3800 | && !this->relax_failed_) | |
3801 | { | |
3802 | this->relax_failed_ = true; | |
3803 | this->relax_fail_count_++; | |
3804 | if (this->relax_fail_count_ < 3) | |
3805 | return true; | |
3806 | } | |
3807 | } | |
3808 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3809 | p != this->stub_tables_.end(); | |
3810 | ++p) | |
3811 | (*p)->set_resizing(false); | |
3812 | } | |
ec661b9d | 3813 | |
9e69ed50 | 3814 | // Did anything change size? |
ec661b9d AM |
3815 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3816 | bool again = num_huge_branches != prev_brlt_size; | |
3817 | if (size == 64 && num_huge_branches != 0) | |
3818 | this->make_brlt_section(layout); | |
3819 | if (size == 64 && again) | |
3820 | this->brlt_section_->set_current_size(num_huge_branches); | |
3821 | ||
be897fb7 AM |
3822 | for (typename Stub_tables::reverse_iterator p = this->stub_tables_.rbegin(); |
3823 | p != this->stub_tables_.rend(); | |
3824 | ++p) | |
3825 | (*p)->remove_eh_frame(layout); | |
3826 | ||
3827 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3828 | p != this->stub_tables_.end(); | |
3829 | ++p) | |
3830 | (*p)->add_eh_frame(layout); | |
3831 | ||
ec661b9d AM |
3832 | typedef Unordered_set<Output_section*> Output_sections; |
3833 | Output_sections os_need_update; | |
3834 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3835 | p != this->stub_tables_.end(); | |
3836 | ++p) | |
3837 | { | |
3838 | if ((*p)->size_update()) | |
3839 | { | |
3840 | again = true; | |
3841 | os_need_update.insert((*p)->output_section()); | |
3842 | } | |
3843 | } | |
3844 | ||
9e69ed50 AM |
3845 | // Set output section offsets for all input sections in an output |
3846 | // section that just changed size. Anything past the stubs will | |
3847 | // need updating. | |
ec661b9d AM |
3848 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3849 | p != os_need_update.end(); | |
3850 | p++) | |
3851 | { | |
3852 | Output_section* os = *p; | |
3853 | Address off = 0; | |
3854 | typedef Output_section::Input_section_list Input_section_list; | |
3855 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3856 | i != os->input_sections().end(); | |
3857 | ++i) | |
3858 | { | |
3859 | off = align_address(off, i->addralign()); | |
3860 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3861 | i->relobj()->set_section_offset(i->shndx(), off); | |
3862 | if (i->is_relaxed_input_section()) | |
3863 | { | |
3864 | Stub_table<size, big_endian>* stub_table | |
3865 | = static_cast<Stub_table<size, big_endian>*>( | |
3866 | i->relaxed_input_section()); | |
6395d38b HS |
3867 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3868 | off += stub_table_size; | |
3869 | // After a few iterations, set current stub table size | |
3870 | // as min size threshold, so later stub tables can only | |
3871 | // grow in size. | |
3872 | if (pass >= 4) | |
3873 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3874 | } |
3875 | else | |
3876 | off += i->data_size(); | |
3877 | } | |
6830ee24 AM |
3878 | // If .branch_lt is part of this output section, then we have |
3879 | // just done the offset adjustment. | |
ec661b9d AM |
3880 | os->clear_section_offsets_need_adjustment(); |
3881 | } | |
3882 | ||
3883 | if (size == 64 | |
3884 | && !again | |
3885 | && num_huge_branches != 0 | |
3886 | && parameters->options().output_is_position_independent()) | |
3887 | { | |
3888 | // Fill in the BRLT relocs. | |
06f30c9d | 3889 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3890 | for (typename Branch_lookup_table::const_iterator p |
3891 | = this->branch_lookup_table_.begin(); | |
3892 | p != this->branch_lookup_table_.end(); | |
3893 | ++p) | |
3894 | { | |
3895 | this->brlt_section_->add_reloc(p->first, p->second); | |
3896 | } | |
06f30c9d | 3897 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3898 | } |
590b87ff AM |
3899 | |
3900 | if (!again | |
3901 | && (parameters->options().user_set_emit_stub_syms() | |
3902 | ? parameters->options().emit_stub_syms() | |
3903 | : (size == 64 | |
3904 | || parameters->options().output_is_position_independent() | |
3905 | || parameters->options().emit_relocs()))) | |
3906 | { | |
3907 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3908 | p != this->stub_tables_.end(); | |
3909 | ++p) | |
3910 | (*p)->define_stub_syms(symtab); | |
3911 | ||
3912 | if (this->glink_ != NULL) | |
3913 | { | |
9e390558 | 3914 | int stub_size = this->glink_->pltresolve_size(); |
590b87ff AM |
3915 | Address value = -stub_size; |
3916 | if (size == 64) | |
3917 | { | |
3918 | value = 8; | |
3919 | stub_size -= 8; | |
3920 | } | |
3921 | this->define_local(symtab, "__glink_PLTresolve", | |
3922 | this->glink_, value, stub_size); | |
3923 | ||
3924 | if (size != 64) | |
3925 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3926 | } | |
3927 | } | |
3928 | ||
ec661b9d AM |
3929 | return again; |
3930 | } | |
3931 | ||
9d5781f8 AM |
3932 | template<int size, bool big_endian> |
3933 | void | |
3934 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3935 | unsigned char* oview, | |
3936 | uint64_t* paddress, | |
3937 | off_t* plen) const | |
3938 | { | |
3939 | uint64_t address = plt->address(); | |
3940 | off_t len = plt->data_size(); | |
3941 | ||
3942 | if (plt == this->glink_) | |
3943 | { | |
3944 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3945 | if (len == 0) |
3946 | { | |
3947 | gold_assert(parameters->doing_static_link()); | |
3948 | // Static linking may need stubs, to support ifunc and long | |
3949 | // branches. We need to create an output section for | |
3950 | // .eh_frame early in the link process, to have a place to | |
3951 | // attach stub .eh_frame info. We also need to have | |
3952 | // registered a CIE that matches the stub CIE. Both of | |
3953 | // these requirements are satisfied by creating an FDE and | |
3954 | // CIE for .glink, even though static linking will leave | |
3955 | // .glink zero length. | |
3956 | // ??? Hopefully generating an FDE with a zero address range | |
3957 | // won't confuse anything that consumes .eh_frame info. | |
3958 | } | |
3959 | else if (size == 64) | |
9d5781f8 AM |
3960 | { |
3961 | // There is one word before __glink_PLTresolve | |
3962 | address += 8; | |
3963 | len -= 8; | |
3964 | } | |
3965 | else if (parameters->options().output_is_position_independent()) | |
3966 | { | |
3967 | // There are two FDEs for a position independent glink. | |
3968 | // The first covers the branch table, the second | |
3969 | // __glink_PLTresolve at the end of glink. | |
9e390558 | 3970 | off_t resolve_size = this->glink_->pltresolve_size(); |
5fe7ffdc | 3971 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3972 | len -= resolve_size; |
3973 | else | |
3974 | { | |
3975 | address += len - resolve_size; | |
3976 | len = resolve_size; | |
3977 | } | |
3978 | } | |
3979 | } | |
3980 | else | |
3981 | { | |
3982 | // Must be a stub table. | |
3983 | const Stub_table<size, big_endian>* stub_table | |
3984 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3985 | uint64_t stub_address = stub_table->stub_address(); | |
3986 | len -= stub_address - address; | |
3987 | address = stub_address; | |
3988 | } | |
3989 | ||
3990 | *paddress = address; | |
3991 | *plen = len; | |
3992 | } | |
3993 | ||
42cacb20 DE |
3994 | // A class to handle the PLT data. |
3995 | ||
3996 | template<int size, bool big_endian> | |
cf43a2fe | 3997 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3998 | { |
3999 | public: | |
4000 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4001 | size, big_endian> Reloc_section; | |
4002 | ||
e5d5f5ed AM |
4003 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
4004 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
4005 | const char* name) |
4006 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4007 | rel_(plt_rel), | |
4008 | targ_(targ), | |
e5d5f5ed AM |
4009 | name_(name) |
4010 | { } | |
42cacb20 DE |
4011 | |
4012 | // Add an entry to the PLT. | |
03e25981 | 4013 | void |
cf43a2fe | 4014 | add_entry(Symbol*); |
42cacb20 | 4015 | |
03e25981 | 4016 | void |
e5d5f5ed AM |
4017 | add_ifunc_entry(Symbol*); |
4018 | ||
2d7ad24e AM |
4019 | void |
4020 | add_local_entry(Sized_relobj_file<size, big_endian>*, unsigned int); | |
4021 | ||
03e25981 | 4022 | void |
e5d5f5ed AM |
4023 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
4024 | ||
42cacb20 | 4025 | // Return the .rela.plt section data. |
e5d5f5ed | 4026 | Reloc_section* |
cf43a2fe AM |
4027 | rel_plt() const |
4028 | { | |
42cacb20 DE |
4029 | return this->rel_; |
4030 | } | |
4031 | ||
0e70b911 CC |
4032 | // Return the number of PLT entries. |
4033 | unsigned int | |
4034 | entry_count() const | |
d83ce4e3 | 4035 | { |
b3ccdeb5 AM |
4036 | if (this->current_data_size() == 0) |
4037 | return 0; | |
b4f7960d AM |
4038 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
4039 | / this->plt_entry_size()); | |
d83ce4e3 | 4040 | } |
0e70b911 | 4041 | |
42cacb20 | 4042 | protected: |
42cacb20 | 4043 | void |
cf43a2fe | 4044 | do_adjust_output_section(Output_section* os) |
42cacb20 | 4045 | { |
cf43a2fe | 4046 | os->set_entsize(0); |
42cacb20 DE |
4047 | } |
4048 | ||
6ce78956 AM |
4049 | // Write to a map file. |
4050 | void | |
4051 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 4052 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 4053 | |
cf43a2fe | 4054 | private: |
b4f7960d AM |
4055 | // Return the offset of the first non-reserved PLT entry. |
4056 | unsigned int | |
4057 | first_plt_entry_offset() const | |
4058 | { | |
2d7ad24e AM |
4059 | // IPLT and LPLT have no reserved entry. |
4060 | if (this->name_[3] == 'I' || this->name_[3] == 'L') | |
b4f7960d AM |
4061 | return 0; |
4062 | return this->targ_->first_plt_entry_offset(); | |
4063 | } | |
4064 | ||
4065 | // Return the size of each PLT entry. | |
4066 | unsigned int | |
4067 | plt_entry_size() const | |
4068 | { | |
4069 | return this->targ_->plt_entry_size(); | |
4070 | } | |
cf43a2fe | 4071 | |
42cacb20 DE |
4072 | // Write out the PLT data. |
4073 | void | |
4074 | do_write(Output_file*); | |
4075 | ||
4076 | // The reloc section. | |
4077 | Reloc_section* rel_; | |
cf43a2fe AM |
4078 | // Allows access to .glink for do_write. |
4079 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
4080 | // What to report in map file. |
4081 | const char *name_; | |
42cacb20 DE |
4082 | }; |
4083 | ||
e5d5f5ed | 4084 | // Add an entry to the PLT. |
42cacb20 DE |
4085 | |
4086 | template<int size, bool big_endian> | |
03e25981 | 4087 | void |
e5d5f5ed | 4088 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 4089 | { |
e5d5f5ed AM |
4090 | if (!gsym->has_plt_offset()) |
4091 | { | |
ec661b9d | 4092 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4093 | if (off == 0) |
4094 | off += this->first_plt_entry_offset(); | |
4095 | gsym->set_plt_offset(off); | |
4096 | gsym->set_needs_dynsym_entry(); | |
4097 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4098 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 4099 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4100 | this->set_current_data_size(off); |
4101 | } | |
42cacb20 DE |
4102 | } |
4103 | ||
e5d5f5ed | 4104 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
4105 | |
4106 | template<int size, bool big_endian> | |
03e25981 | 4107 | void |
e5d5f5ed | 4108 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 4109 | { |
cf43a2fe AM |
4110 | if (!gsym->has_plt_offset()) |
4111 | { | |
ec661b9d | 4112 | section_size_type off = this->current_data_size(); |
cf43a2fe | 4113 | gsym->set_plt_offset(off); |
e5d5f5ed | 4114 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 4115 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4116 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4117 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 4118 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4119 | this->set_current_data_size(off); |
4120 | } | |
4121 | } | |
4122 | ||
2d7ad24e AM |
4123 | // Add an entry for a local symbol to the PLT. |
4124 | ||
4125 | template<int size, bool big_endian> | |
4126 | void | |
4127 | Output_data_plt_powerpc<size, big_endian>::add_local_entry( | |
4128 | Sized_relobj_file<size, big_endian>* relobj, | |
4129 | unsigned int local_sym_index) | |
4130 | { | |
4131 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4132 | { | |
4133 | section_size_type off = this->current_data_size(); | |
4134 | relobj->set_local_plt_offset(local_sym_index, off); | |
4135 | if (this->rel_) | |
4136 | { | |
4137 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; | |
4138 | if (size == 64 && this->targ_->abiversion() < 2) | |
4139 | dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4140 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, | |
4141 | dynrel, this, off, 0); | |
4142 | } | |
4143 | off += this->plt_entry_size(); | |
4144 | this->set_current_data_size(off); | |
4145 | } | |
4146 | } | |
4147 | ||
e5d5f5ed AM |
4148 | // Add an entry for a local ifunc symbol to the IPLT. |
4149 | ||
4150 | template<int size, bool big_endian> | |
03e25981 | 4151 | void |
e5d5f5ed AM |
4152 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
4153 | Sized_relobj_file<size, big_endian>* relobj, | |
4154 | unsigned int local_sym_index) | |
4155 | { | |
4156 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4157 | { | |
ec661b9d | 4158 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4159 | relobj->set_local_plt_offset(local_sym_index, off); |
4160 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 4161 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4162 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4163 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
4164 | this, off, 0); | |
b4f7960d | 4165 | off += this->plt_entry_size(); |
cf43a2fe AM |
4166 | this->set_current_data_size(off); |
4167 | } | |
42cacb20 DE |
4168 | } |
4169 | ||
dd93cd0a | 4170 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 4171 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 4172 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
4173 | static const uint32_t add_3_3_2 = 0x7c631214; |
4174 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
34e0882b AM |
4175 | static const uint32_t add_3_12_2 = 0x7c6c1214; |
4176 | static const uint32_t add_3_12_13 = 0x7c6c6a14; | |
dd93cd0a | 4177 | static const uint32_t add_11_0_11 = 0x7d605a14; |
b4f7960d AM |
4178 | static const uint32_t add_11_2_11 = 0x7d625a14; |
4179 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
32f59844 | 4180 | static const uint32_t add_12_11_12 = 0x7d8b6214; |
b4f7960d | 4181 | static const uint32_t addi_0_12 = 0x380c0000; |
dd93cd0a | 4182 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 4183 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 4184 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 4185 | static const uint32_t addi_12_1 = 0x39810000; |
32f59844 | 4186 | static const uint32_t addi_12_11 = 0x398b0000; |
b4f7960d | 4187 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
4188 | static const uint32_t addis_0_2 = 0x3c020000; |
4189 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 4190 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 4191 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
4192 | static const uint32_t addis_11_11 = 0x3d6b0000; |
4193 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 4194 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 4195 | static const uint32_t addis_12_2 = 0x3d820000; |
32f59844 | 4196 | static const uint32_t addis_12_11 = 0x3d8b0000; |
c9269dff | 4197 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
4198 | static const uint32_t b = 0x48000000; |
4199 | static const uint32_t bcl_20_31 = 0x429f0005; | |
4200 | static const uint32_t bctr = 0x4e800420; | |
34e0882b AM |
4201 | static const uint32_t bctrl = 0x4e800421; |
4202 | static const uint32_t beqlr = 0x4d820020; | |
f3a0ed29 | 4203 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 4204 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 4205 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 4206 | static const uint32_t cmpldi_2_0 = 0x28220000; |
34e0882b AM |
4207 | static const uint32_t cmpdi_11_0 = 0x2c2b0000; |
4208 | static const uint32_t cmpwi_11_0 = 0x2c0b0000; | |
dd93cd0a AM |
4209 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
4210 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 | 4211 | static const uint32_t ld_0_1 = 0xe8010000; |
63e5eea2 | 4212 | static const uint32_t ld_0_11 = 0xe80b0000; |
f3a0ed29 | 4213 | static const uint32_t ld_0_12 = 0xe80c0000; |
dd93cd0a | 4214 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 4215 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 4216 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 4217 | static const uint32_t ld_2_12 = 0xe84c0000; |
34e0882b | 4218 | static const uint32_t ld_11_1 = 0xe9610000; |
b4f7960d | 4219 | static const uint32_t ld_11_2 = 0xe9620000; |
34e0882b | 4220 | static const uint32_t ld_11_3 = 0xe9630000; |
b4f7960d AM |
4221 | static const uint32_t ld_11_11 = 0xe96b0000; |
4222 | static const uint32_t ld_12_2 = 0xe9820000; | |
34e0882b | 4223 | static const uint32_t ld_12_3 = 0xe9830000; |
b4f7960d | 4224 | static const uint32_t ld_12_11 = 0xe98b0000; |
9055360d | 4225 | static const uint32_t ld_12_12 = 0xe98c0000; |
32f59844 | 4226 | static const uint32_t ldx_12_11_12 = 0x7d8b602a; |
f3a0ed29 | 4227 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 4228 | static const uint32_t li_0_0 = 0x38000000; |
e4dff765 | 4229 | static const uint32_t li_11_0 = 0x39600000; |
f3a0ed29 | 4230 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 4231 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 4232 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
4233 | static const uint32_t lis_11 = 0x3d600000; |
4234 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 4235 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 4236 | static const uint32_t lwz_0_12 = 0x800c0000; |
34e0882b | 4237 | static const uint32_t lwz_11_3 = 0x81630000; |
c9269dff AM |
4238 | static const uint32_t lwz_11_11 = 0x816b0000; |
4239 | static const uint32_t lwz_11_30 = 0x817e0000; | |
34e0882b | 4240 | static const uint32_t lwz_12_3 = 0x81830000; |
c9269dff | 4241 | static const uint32_t lwz_12_12 = 0x818c0000; |
dd93cd0a | 4242 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 4243 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 4244 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff | 4245 | static const uint32_t mflr_12 = 0x7d8802a6; |
34e0882b AM |
4246 | static const uint32_t mr_0_3 = 0x7c601b78; |
4247 | static const uint32_t mr_3_0 = 0x7c030378; | |
c9269dff AM |
4248 | static const uint32_t mtctr_0 = 0x7c0903a6; |
4249 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 4250 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 4251 | static const uint32_t mtlr_0 = 0x7c0803a6; |
34e0882b | 4252 | static const uint32_t mtlr_11 = 0x7d6803a6; |
c9269dff | 4253 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 4254 | static const uint32_t nop = 0x60000000; |
c9269dff | 4255 | static const uint32_t ori_0_0_0 = 0x60000000; |
e4dff765 | 4256 | static const uint32_t ori_11_11_0 = 0x616b0000; |
32f59844 AM |
4257 | static const uint32_t ori_12_12_0 = 0x618c0000; |
4258 | static const uint32_t oris_12_12_0 = 0x658c0000; | |
e4dff765 | 4259 | static const uint32_t sldi_11_11_34 = 0x796b1746; |
32f59844 | 4260 | static const uint32_t sldi_12_12_32 = 0x799c07c6; |
b4f7960d | 4261 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
4262 | static const uint32_t std_0_1 = 0xf8010000; |
4263 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 4264 | static const uint32_t std_2_1 = 0xf8410000; |
34e0882b | 4265 | static const uint32_t std_11_1 = 0xf9610000; |
f3a0ed29 AM |
4266 | static const uint32_t stfd_0_1 = 0xd8010000; |
4267 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 4268 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
4269 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
4270 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
4271 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 | 4272 | |
e4dff765 AM |
4273 | static const uint64_t paddi_12_pc = 0x0610000039800000ULL; |
4274 | static const uint64_t pld_12_pc = 0x04100000e5800000ULL; | |
4275 | static const uint64_t pnop = 0x0700000000000000ULL; | |
4276 | ||
42cacb20 DE |
4277 | // Write out the PLT. |
4278 | ||
4279 | template<int size, bool big_endian> | |
4280 | void | |
4281 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4282 | { | |
2d7ad24e | 4283 | if (size == 32 && (this->name_[3] != 'I' && this->name_[3] != 'L')) |
cf43a2fe | 4284 | { |
ec661b9d | 4285 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
4286 | const section_size_type oview_size |
4287 | = convert_to_section_size_type(this->data_size()); | |
4288 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4289 | unsigned char* pov = oview; | |
4290 | unsigned char* endpov = oview + oview_size; | |
4291 | ||
e5d5f5ed | 4292 | // The address of the .glink branch table |
cf43a2fe AM |
4293 | const Output_data_glink<size, big_endian>* glink |
4294 | = this->targ_->glink_section(); | |
ec661b9d | 4295 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
4296 | |
4297 | while (pov < endpov) | |
4298 | { | |
4299 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
4300 | pov += 4; | |
4301 | branch_tab += 4; | |
4302 | } | |
4303 | ||
4304 | of->write_output_view(offset, oview_size, oview); | |
4305 | } | |
4306 | } | |
4307 | ||
4308 | // Create the PLT section. | |
4309 | ||
4310 | template<int size, bool big_endian> | |
4311 | void | |
40b469d7 AM |
4312 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
4313 | Layout* layout) | |
cf43a2fe AM |
4314 | { |
4315 | if (this->plt_ == NULL) | |
4316 | { | |
40b469d7 AM |
4317 | if (this->got_ == NULL) |
4318 | this->got_section(symtab, layout); | |
4319 | ||
cf43a2fe AM |
4320 | if (this->glink_ == NULL) |
4321 | make_glink_section(layout); | |
4322 | ||
4323 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
4324 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 4325 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
4326 | this->rela_dyn_section(layout); |
4327 | ||
e5d5f5ed AM |
4328 | Reloc_section* plt_rel = new Reloc_section(false); |
4329 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
4330 | elfcpp::SHF_ALLOC, plt_rel, | |
4331 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
4332 | this->plt_ | |
4333 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 4334 | "** PLT"); |
cf43a2fe AM |
4335 | layout->add_output_section_data(".plt", |
4336 | (size == 32 | |
4337 | ? elfcpp::SHT_PROGBITS | |
4338 | : elfcpp::SHT_NOBITS), | |
4339 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4340 | this->plt_, | |
4341 | (size == 32 | |
4342 | ? ORDER_SMALL_DATA | |
4343 | : ORDER_SMALL_BSS), | |
4344 | false); | |
3254d32c AM |
4345 | |
4346 | Output_section* rela_plt_os = plt_rel->output_section(); | |
4347 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
4348 | } |
4349 | } | |
4350 | ||
e5d5f5ed AM |
4351 | // Create the IPLT section. |
4352 | ||
4353 | template<int size, bool big_endian> | |
4354 | void | |
40b469d7 AM |
4355 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
4356 | Layout* layout) | |
e5d5f5ed AM |
4357 | { |
4358 | if (this->iplt_ == NULL) | |
4359 | { | |
40b469d7 | 4360 | this->make_plt_section(symtab, layout); |
2d7ad24e | 4361 | this->make_lplt_section(layout); |
e5d5f5ed AM |
4362 | |
4363 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
4364 | if (this->rela_dyn_->output_section()) |
4365 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
4366 | this->iplt_ |
4367 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 4368 | "** IPLT"); |
6528b6eb AM |
4369 | if (this->plt_->output_section()) |
4370 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
4371 | } |
4372 | } | |
4373 | ||
2d7ad24e AM |
4374 | // Create the LPLT section. |
4375 | ||
4376 | template<int size, bool big_endian> | |
4377 | void | |
4378 | Target_powerpc<size, big_endian>::make_lplt_section(Layout* layout) | |
4379 | { | |
4380 | if (this->lplt_ == NULL) | |
4381 | { | |
4382 | Reloc_section* lplt_rel = NULL; | |
4383 | if (parameters->options().output_is_position_independent()) | |
4384 | { | |
4385 | lplt_rel = new Reloc_section(false); | |
4386 | this->rela_dyn_section(layout); | |
4387 | if (this->rela_dyn_->output_section()) | |
4388 | this->rela_dyn_->output_section() | |
4389 | ->add_output_section_data(lplt_rel); | |
4390 | } | |
4391 | this->lplt_ | |
4392 | = new Output_data_plt_powerpc<size, big_endian>(this, lplt_rel, | |
4393 | "** LPLT"); | |
4394 | this->make_brlt_section(layout); | |
4395 | if (this->brlt_section_ && this->brlt_section_->output_section()) | |
4396 | this->brlt_section_->output_section() | |
4397 | ->add_output_section_data(this->lplt_); | |
4398 | else | |
4399 | layout->add_output_section_data(".branch_lt", | |
4400 | elfcpp::SHT_PROGBITS, | |
4401 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4402 | this->lplt_, | |
4403 | ORDER_RELRO, | |
4404 | true); | |
4405 | } | |
4406 | } | |
4407 | ||
ec661b9d | 4408 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
4409 | |
4410 | template<int size, bool big_endian> | |
ec661b9d | 4411 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
4412 | { |
4413 | public: | |
ec661b9d AM |
4414 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4415 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4416 | size, big_endian> Reloc_section; | |
c9269dff | 4417 | |
ec661b9d AM |
4418 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
4419 | Reloc_section* brlt_rel) | |
4420 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4421 | rel_(brlt_rel), | |
4422 | targ_(targ) | |
4423 | { } | |
cf43a2fe | 4424 | |
06f30c9d CC |
4425 | void |
4426 | reset_brlt_sizes() | |
4427 | { | |
4428 | this->reset_data_size(); | |
4429 | this->rel_->reset_data_size(); | |
4430 | } | |
4431 | ||
4432 | void | |
4433 | finalize_brlt_sizes() | |
4434 | { | |
4435 | this->finalize_data_size(); | |
4436 | this->rel_->finalize_data_size(); | |
4437 | } | |
4438 | ||
ec661b9d | 4439 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 4440 | void |
ec661b9d AM |
4441 | add_reloc(Address to, unsigned int off) |
4442 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 4443 | |
ec661b9d | 4444 | // Update section and reloc section size. |
e5d5f5ed | 4445 | void |
ec661b9d AM |
4446 | set_current_size(unsigned int num_branches) |
4447 | { | |
4448 | this->reset_address_and_file_offset(); | |
4449 | this->set_current_data_size(num_branches * 16); | |
4450 | this->finalize_data_size(); | |
4451 | Output_section* os = this->output_section(); | |
4452 | os->set_section_offsets_need_adjustment(); | |
4453 | if (this->rel_ != NULL) | |
4454 | { | |
0e123f69 | 4455 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
4456 | this->rel_->reset_address_and_file_offset(); |
4457 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
4458 | this->rel_->finalize_data_size(); | |
4459 | Output_section* os = this->rel_->output_section(); | |
4460 | os->set_section_offsets_need_adjustment(); | |
4461 | } | |
4462 | } | |
cf43a2fe | 4463 | |
ec661b9d AM |
4464 | protected: |
4465 | void | |
4466 | do_adjust_output_section(Output_section* os) | |
4467 | { | |
4468 | os->set_entsize(0); | |
4469 | } | |
e5d5f5ed | 4470 | |
ec661b9d AM |
4471 | // Write to a map file. |
4472 | void | |
4473 | do_print_to_mapfile(Mapfile* mapfile) const | |
4474 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 4475 | |
ec661b9d AM |
4476 | private: |
4477 | // Write out the BRLT data. | |
4478 | void | |
4479 | do_write(Output_file*); | |
c9824451 | 4480 | |
ec661b9d AM |
4481 | // The reloc section. |
4482 | Reloc_section* rel_; | |
4483 | Target_powerpc<size, big_endian>* targ_; | |
4484 | }; | |
cf43a2fe | 4485 | |
ec661b9d AM |
4486 | // Make the branch lookup table section. |
4487 | ||
4488 | template<int size, bool big_endian> | |
4489 | void | |
4490 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
4491 | { | |
4492 | if (size == 64 && this->brlt_section_ == NULL) | |
4493 | { | |
4494 | Reloc_section* brlt_rel = NULL; | |
4495 | bool is_pic = parameters->options().output_is_position_independent(); | |
4496 | if (is_pic) | |
4497 | { | |
54483898 AM |
4498 | // When PIC we can't fill in .branch_lt but must initialise at |
4499 | // runtime via dynamic relocations. | |
ec661b9d AM |
4500 | this->rela_dyn_section(layout); |
4501 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
4502 | if (this->rela_dyn_->output_section()) |
4503 | this->rela_dyn_->output_section() | |
4504 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
4505 | } |
4506 | this->brlt_section_ | |
4507 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 4508 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
4509 | this->plt_->output_section() |
4510 | ->add_output_section_data(this->brlt_section_); | |
4511 | else | |
6830ee24 | 4512 | layout->add_output_section_data(".branch_lt", |
54483898 | 4513 | elfcpp::SHT_PROGBITS, |
ec661b9d AM |
4514 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, |
4515 | this->brlt_section_, | |
54483898 AM |
4516 | ORDER_RELRO, |
4517 | true); | |
ec661b9d AM |
4518 | } |
4519 | } | |
4520 | ||
6830ee24 | 4521 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
4522 | |
4523 | template<int size, bool big_endian> | |
4524 | void | |
4525 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4526 | { | |
4527 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
4528 | { | |
4529 | const section_size_type offset = this->offset(); | |
4530 | const section_size_type oview_size | |
4531 | = convert_to_section_size_type(this->data_size()); | |
4532 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4533 | ||
4534 | this->targ_->write_branch_lookup_table(oview); | |
4535 | of->write_output_view(offset, oview_size, oview); | |
4536 | } | |
4537 | } | |
4538 | ||
9e69ed50 AM |
4539 | static inline uint32_t |
4540 | l(uint32_t a) | |
4541 | { | |
4542 | return a & 0xffff; | |
4543 | } | |
4544 | ||
4545 | static inline uint32_t | |
4546 | hi(uint32_t a) | |
4547 | { | |
4548 | return l(a >> 16); | |
4549 | } | |
4550 | ||
4551 | static inline uint32_t | |
4552 | ha(uint32_t a) | |
4553 | { | |
4554 | return hi(a + 0x8000); | |
4555 | } | |
4556 | ||
e4dff765 AM |
4557 | static inline uint64_t |
4558 | d34(uint64_t v) | |
4559 | { | |
4560 | return ((v & 0x3ffff0000ULL) << 16) | (v & 0xffff); | |
4561 | } | |
4562 | ||
4563 | static inline uint64_t | |
4564 | ha34(uint64_t v) | |
4565 | { | |
4566 | return (v + (1ULL << 33)) >> 34; | |
4567 | } | |
4568 | ||
9d5781f8 AM |
4569 | template<int size> |
4570 | struct Eh_cie | |
4571 | { | |
4572 | static const unsigned char eh_frame_cie[12]; | |
4573 | }; | |
4574 | ||
4575 | template<int size> | |
4576 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
4577 | { | |
4578 | 1, // CIE version. | |
4579 | 'z', 'R', 0, // Augmentation string. | |
4580 | 4, // Code alignment. | |
4581 | 0x80 - size / 8 , // Data alignment. | |
4582 | 65, // RA reg. | |
4583 | 1, // Augmentation size. | |
4584 | (elfcpp::DW_EH_PE_pcrel | |
4585 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
4586 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
4587 | }; | |
4588 | ||
b4f7960d AM |
4589 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
4590 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
4591 | { |
4592 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4593 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4594 | 0, // Augmentation size. | |
63e5eea2 | 4595 | elfcpp::DW_CFA_advance_loc + 2, |
9d5781f8 | 4596 | elfcpp::DW_CFA_register, 65, 12, |
63e5eea2 | 4597 | elfcpp::DW_CFA_advance_loc + 4, |
9d5781f8 AM |
4598 | elfcpp::DW_CFA_restore_extended, 65 |
4599 | }; | |
4600 | ||
b4f7960d AM |
4601 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
4602 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
4603 | { | |
4604 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4605 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4606 | 0, // Augmentation size. | |
63e5eea2 | 4607 | elfcpp::DW_CFA_advance_loc + 2, |
b4f7960d | 4608 | elfcpp::DW_CFA_register, 65, 0, |
63e5eea2 AM |
4609 | elfcpp::DW_CFA_advance_loc + 2, |
4610 | elfcpp::DW_CFA_restore_extended, 65 | |
4611 | }; | |
4612 | ||
4613 | static const unsigned char glink_eh_frame_fde_64v2_localentry0[] = | |
4614 | { | |
4615 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4616 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4617 | 0, // Augmentation size. | |
4618 | elfcpp::DW_CFA_advance_loc + 3, | |
4619 | elfcpp::DW_CFA_register, 65, 0, | |
4620 | elfcpp::DW_CFA_advance_loc + 2, | |
b4f7960d AM |
4621 | elfcpp::DW_CFA_restore_extended, 65 |
4622 | }; | |
4623 | ||
9d5781f8 AM |
4624 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4625 | static const unsigned char glink_eh_frame_fde_32[] = | |
4626 | { | |
4627 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4628 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4629 | 0, // Augmentation size. | |
4630 | elfcpp::DW_CFA_advance_loc + 2, | |
4631 | elfcpp::DW_CFA_register, 65, 0, | |
4632 | elfcpp::DW_CFA_advance_loc + 4, | |
4633 | elfcpp::DW_CFA_restore_extended, 65 | |
4634 | }; | |
4635 | ||
4636 | static const unsigned char default_fde[] = | |
4637 | { | |
4638 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4639 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4640 | 0, // Augmentation size. | |
4641 | elfcpp::DW_CFA_nop, // Pad. | |
4642 | elfcpp::DW_CFA_nop, | |
4643 | elfcpp::DW_CFA_nop | |
4644 | }; | |
4645 | ||
9e69ed50 AM |
4646 | template<bool big_endian> |
4647 | static inline void | |
4648 | write_insn(unsigned char* p, uint32_t v) | |
4649 | { | |
4650 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4651 | } | |
4652 | ||
691d2e9a AM |
4653 | template<int size> |
4654 | static inline unsigned int | |
4655 | param_plt_align() | |
4656 | { | |
4657 | if (!parameters->options().user_set_plt_align()) | |
4658 | return size == 64 ? 32 : 8; | |
4659 | return 1 << parameters->options().plt_align(); | |
4660 | } | |
4661 | ||
ec661b9d AM |
4662 | // Stub_table holds information about plt and long branch stubs. |
4663 | // Stubs are built in an area following some input section determined | |
4664 | // by group_sections(). This input section is converted to a relaxed | |
4665 | // input section allowing it to be resized to accommodate the stubs | |
4666 | ||
4667 | template<int size, bool big_endian> | |
4668 | class Stub_table : public Output_relaxed_input_section | |
4669 | { | |
4670 | public: | |
7e57d19e AM |
4671 | struct Plt_stub_ent |
4672 | { | |
4673 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
afd2ea23 AM |
4674 | : off_(off), indx_(indx), iter_(0), notoc_(0), toc_(0), |
4675 | r2save_(0), localentry0_(0), tocoff_(0) | |
7e57d19e AM |
4676 | { } |
4677 | ||
4678 | unsigned int off_; | |
afd2ea23 | 4679 | unsigned int indx_; |
32f59844 AM |
4680 | unsigned int iter_ : 1; |
4681 | unsigned int notoc_ : 1; | |
afd2ea23 | 4682 | unsigned int toc_ : 1; |
7e57d19e | 4683 | unsigned int r2save_ : 1; |
7ee7ff70 | 4684 | unsigned int localentry0_ : 1; |
afd2ea23 | 4685 | unsigned int tocoff_ : 8; |
7e57d19e | 4686 | }; |
32f59844 AM |
4687 | struct Branch_stub_ent |
4688 | { | |
4689 | Branch_stub_ent(unsigned int off, bool notoc, bool save_res) | |
afd2ea23 | 4690 | : off_(off), iter_(0), notoc_(notoc), toc_(0), save_res_(save_res), |
fa40fbe4 | 4691 | other_(0), tocoff_(0) |
32f59844 AM |
4692 | { } |
4693 | ||
4694 | unsigned int off_; | |
afd2ea23 AM |
4695 | unsigned int iter_ : 1; |
4696 | unsigned int notoc_ : 1; | |
4697 | unsigned int toc_ : 1; | |
4698 | unsigned int save_res_ : 1; | |
fa40fbe4 | 4699 | unsigned int other_ : 3; |
afd2ea23 | 4700 | unsigned int tocoff_ : 8; |
32f59844 | 4701 | }; |
ec661b9d AM |
4702 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4703 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4704 | ||
a3e60ddb AM |
4705 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4706 | Output_section* output_section, | |
590b87ff AM |
4707 | const Output_section::Input_section* owner, |
4708 | uint32_t id) | |
a3e60ddb AM |
4709 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4710 | owner->relobj() | |
4711 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4712 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4713 | orig_data_size_(owner->current_data_size()), |
4714 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4715 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
32f59844 | 4716 | need_save_res_(false), need_resize_(false), resizing_(false), |
220f9906 | 4717 | uniq_(id) |
a3e60ddb AM |
4718 | { |
4719 | this->set_output_section(output_section); | |
ec661b9d | 4720 | |
a3e60ddb AM |
4721 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4722 | new_relaxed.push_back(this); | |
4723 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4724 | } | |
ec661b9d AM |
4725 | |
4726 | // Add a plt call stub. | |
a3e60ddb AM |
4727 | bool |
4728 | add_plt_call_entry(Address, | |
4729 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4730 | const Symbol*, |
4731 | unsigned int, | |
7e57d19e AM |
4732 | Address, |
4733 | bool); | |
ec661b9d | 4734 | |
a3e60ddb AM |
4735 | bool |
4736 | add_plt_call_entry(Address, | |
4737 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4738 | unsigned int, |
4739 | unsigned int, | |
7e57d19e AM |
4740 | Address, |
4741 | bool); | |
ec661b9d AM |
4742 | |
4743 | // Find a given plt call stub. | |
7e57d19e | 4744 | const Plt_stub_ent* |
ec661b9d AM |
4745 | find_plt_call_entry(const Symbol*) const; |
4746 | ||
7e57d19e | 4747 | const Plt_stub_ent* |
ec661b9d AM |
4748 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4749 | unsigned int) const; | |
4750 | ||
7e57d19e | 4751 | const Plt_stub_ent* |
ec661b9d AM |
4752 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4753 | const Symbol*, | |
4754 | unsigned int, | |
4755 | Address) const; | |
4756 | ||
7e57d19e | 4757 | const Plt_stub_ent* |
ec661b9d AM |
4758 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4759 | unsigned int, | |
4760 | unsigned int, | |
4761 | Address) const; | |
4762 | ||
4763 | // Add a long branch stub. | |
a3e60ddb AM |
4764 | bool |
4765 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
fa40fbe4 | 4766 | unsigned int, Address, Address, unsigned int, bool); |
ec661b9d | 4767 | |
32f59844 | 4768 | const Branch_stub_ent* |
9d5781f8 AM |
4769 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4770 | Address) const; | |
ec661b9d | 4771 | |
a3e60ddb AM |
4772 | bool |
4773 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4774 | { | |
32f59844 | 4775 | Address max_branch_offset = max_branch_delta<size>(r_type); |
a3e60ddb AM |
4776 | if (max_branch_offset == 0) |
4777 | return true; | |
4778 | gold_assert(from != invalid_address); | |
4779 | Address loc = off + this->stub_address(); | |
4780 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4781 | } | |
4782 | ||
ec661b9d | 4783 | void |
a3e60ddb | 4784 | clear_stubs(bool all) |
cf43a2fe | 4785 | { |
9e69ed50 AM |
4786 | this->plt_call_stubs_.clear(); |
4787 | this->plt_size_ = 0; | |
ec661b9d AM |
4788 | this->long_branch_stubs_.clear(); |
4789 | this->branch_size_ = 0; | |
d49044c7 | 4790 | this->need_save_res_ = false; |
a3e60ddb AM |
4791 | if (all) |
4792 | { | |
4793 | this->last_plt_size_ = 0; | |
4794 | this->last_branch_size_ = 0; | |
4795 | } | |
cf43a2fe AM |
4796 | } |
4797 | ||
32f59844 AM |
4798 | bool |
4799 | need_resize() const | |
4800 | { return need_resize_; } | |
4801 | ||
4802 | void | |
4803 | set_resizing(bool val) | |
4804 | { | |
4805 | this->resizing_ = val; | |
4806 | if (val) | |
4807 | { | |
4808 | this->need_resize_ = false; | |
4809 | this->plt_size_ = 0; | |
4810 | this->branch_size_ = 0; | |
4811 | this->need_save_res_ = false; | |
4812 | } | |
4813 | } | |
4814 | ||
ec661b9d AM |
4815 | Address |
4816 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4817 | { |
ec661b9d AM |
4818 | Address start_off = off; |
4819 | off += this->orig_data_size_; | |
4820 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4821 | if (this->need_save_res_) |
4822 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4823 | if (my_size != 0) |
4824 | off = align_address(off, this->stub_align()); | |
4825 | // Include original section size and alignment padding in size | |
4826 | my_size += off - start_off; | |
6395d38b HS |
4827 | // Ensure new size is always larger than min size |
4828 | // threshold. Alignment requirement is included in "my_size", so | |
4829 | // increase "my_size" does not invalidate alignment. | |
4830 | if (my_size < this->min_size_threshold_) | |
4831 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4832 | this->reset_address_and_file_offset(); |
4833 | this->set_current_data_size(my_size); | |
4834 | this->set_address_and_file_offset(os->address() + start_off, | |
4835 | os->offset() + start_off); | |
4836 | return my_size; | |
cf43a2fe AM |
4837 | } |
4838 | ||
ec661b9d | 4839 | Address |
9d5781f8 | 4840 | stub_address() const |
ec661b9d AM |
4841 | { |
4842 | return align_address(this->address() + this->orig_data_size_, | |
4843 | this->stub_align()); | |
4844 | } | |
4845 | ||
4846 | Address | |
9d5781f8 | 4847 | stub_offset() const |
ec661b9d AM |
4848 | { |
4849 | return align_address(this->offset() + this->orig_data_size_, | |
4850 | this->stub_align()); | |
4851 | } | |
4852 | ||
4853 | section_size_type | |
4854 | plt_size() const | |
4855 | { return this->plt_size_; } | |
4856 | ||
32f59844 AM |
4857 | section_size_type |
4858 | branch_size() const | |
4859 | { return this->branch_size_; } | |
4860 | ||
590b87ff AM |
4861 | void |
4862 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4863 | { this->min_size_threshold_ = min_size; } |
4864 | ||
590b87ff AM |
4865 | void |
4866 | define_stub_syms(Symbol_table*); | |
4867 | ||
ec661b9d AM |
4868 | bool |
4869 | size_update() | |
4870 | { | |
4871 | Output_section* os = this->output_section(); | |
4872 | if (os->addralign() < this->stub_align()) | |
4873 | { | |
4874 | os->set_addralign(this->stub_align()); | |
4875 | // FIXME: get rid of the insane checkpointing. | |
4876 | // We can't increase alignment of the input section to which | |
4877 | // stubs are attached; The input section may be .init which | |
4878 | // is pasted together with other .init sections to form a | |
4879 | // function. Aligning might insert zero padding resulting in | |
4880 | // sigill. However we do need to increase alignment of the | |
4881 | // output section so that the align_address() on offset in | |
4882 | // set_address_and_size() adds the same padding as the | |
4883 | // align_address() on address in stub_address(). | |
4884 | // What's more, we need this alignment for the layout done in | |
4885 | // relaxation_loop_body() so that the output section starts at | |
4886 | // a suitably aligned address. | |
4887 | os->checkpoint_set_addralign(this->stub_align()); | |
4888 | } | |
9e69ed50 AM |
4889 | if (this->last_plt_size_ != this->plt_size_ |
4890 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4891 | { |
9e69ed50 AM |
4892 | this->last_plt_size_ = this->plt_size_; |
4893 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4894 | return true; |
4895 | } | |
4896 | return false; | |
4897 | } | |
4898 | ||
34e0882b AM |
4899 | // Add .eh_frame info for this stub section. |
4900 | void | |
4901 | add_eh_frame(Layout* layout); | |
be897fb7 | 4902 | |
34e0882b | 4903 | // Remove .eh_frame info for this stub section. |
be897fb7 | 4904 | void |
34e0882b | 4905 | remove_eh_frame(Layout* layout); |
9d5781f8 | 4906 | |
ec661b9d AM |
4907 | Target_powerpc<size, big_endian>* |
4908 | targ() const | |
4909 | { return targ_; } | |
6ce78956 | 4910 | |
cf43a2fe | 4911 | private: |
bdab445c AM |
4912 | class Plt_stub_key; |
4913 | class Plt_stub_key_hash; | |
bdab445c AM |
4914 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4915 | Plt_stub_key_hash> Plt_stub_entries; | |
32f59844 AM |
4916 | class Branch_stub_key; |
4917 | class Branch_stub_key_hash; | |
4918 | typedef Unordered_map<Branch_stub_key, Branch_stub_ent, | |
4919 | Branch_stub_key_hash> Branch_stub_entries; | |
9e69ed50 AM |
4920 | |
4921 | // Alignment of stub section. | |
ec661b9d | 4922 | unsigned int |
9e69ed50 AM |
4923 | stub_align() const |
4924 | { | |
691d2e9a | 4925 | unsigned int min_align = size == 64 ? 32 : 16; |
9e69ed50 AM |
4926 | unsigned int user_align = 1 << parameters->options().plt_align(); |
4927 | return std::max(user_align, min_align); | |
4928 | } | |
cf43a2fe | 4929 | |
91c2b899 AM |
4930 | // Return the plt offset for the given call stub. |
4931 | Address | |
08be3224 AM |
4932 | plt_off(typename Plt_stub_entries::const_iterator p, |
4933 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
91c2b899 AM |
4934 | { |
4935 | const Symbol* gsym = p->first.sym_; | |
4936 | if (gsym != NULL) | |
08be3224 | 4937 | return this->targ_->plt_off(gsym, sec); |
91c2b899 AM |
4938 | else |
4939 | { | |
91c2b899 AM |
4940 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; |
4941 | unsigned int local_sym_index = p->first.locsym_; | |
08be3224 | 4942 | return this->targ_->plt_off(relobj, local_sym_index, sec); |
91c2b899 AM |
4943 | } |
4944 | } | |
4945 | ||
9e69ed50 | 4946 | // Size of a given plt call stub. |
ec661b9d | 4947 | unsigned int |
afd2ea23 | 4948 | plt_call_size(typename Plt_stub_entries::iterator p) const; |
34e0882b AM |
4949 | |
4950 | unsigned int | |
4951 | plt_call_align(unsigned int bytes) const | |
4952 | { | |
691d2e9a | 4953 | unsigned int align = param_plt_align<size>(); |
9e390558 | 4954 | return (bytes + align - 1) & -align; |
9e69ed50 | 4955 | } |
ec661b9d AM |
4956 | |
4957 | // Return long branch stub size. | |
4958 | unsigned int | |
afd2ea23 | 4959 | branch_stub_size(typename Branch_stub_entries::iterator p, |
32f59844 AM |
4960 | bool* need_lt); |
4961 | ||
afd2ea23 AM |
4962 | void |
4963 | build_tls_opt_head(unsigned char** pp, bool save_lr); | |
32f59844 | 4964 | |
afd2ea23 AM |
4965 | void |
4966 | build_tls_opt_tail(unsigned char* p); | |
ec661b9d | 4967 | |
f073a3e8 AM |
4968 | void |
4969 | plt_error(const Plt_stub_key& p); | |
4970 | ||
ec661b9d | 4971 | // Write out stubs. |
cf43a2fe AM |
4972 | void |
4973 | do_write(Output_file*); | |
4974 | ||
ec661b9d | 4975 | // Plt call stub keys. |
bdab445c | 4976 | class Plt_stub_key |
cf43a2fe | 4977 | { |
d1a8cabd | 4978 | public: |
bdab445c | 4979 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
4980 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
4981 | { } | |
4982 | ||
bdab445c | 4983 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 4984 | unsigned int locsym_index) |
c9824451 AM |
4985 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4986 | { } | |
4987 | ||
bdab445c | 4988 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4989 | const Symbol* sym, |
4990 | unsigned int r_type, | |
4991 | Address addend) | |
e5d5f5ed | 4992 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
4993 | { |
4994 | if (size != 32) | |
ec661b9d | 4995 | this->addend_ = addend; |
d1a8cabd | 4996 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
4997 | && (r_type == elfcpp::R_PPC_PLTREL24 |
4998 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
cf43a2fe | 4999 | { |
ec661b9d | 5000 | this->addend_ = addend; |
e5d5f5ed | 5001 | if (this->addend_ >= 32768) |
d1a8cabd | 5002 | this->object_ = object; |
cf43a2fe AM |
5003 | } |
5004 | } | |
5005 | ||
bdab445c | 5006 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
5007 | unsigned int locsym_index, |
5008 | unsigned int r_type, | |
5009 | Address addend) | |
e5d5f5ed AM |
5010 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
5011 | { | |
5012 | if (size != 32) | |
ec661b9d | 5013 | this->addend_ = addend; |
e5d5f5ed | 5014 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
5015 | && (r_type == elfcpp::R_PPC_PLTREL24 |
5016 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
ec661b9d | 5017 | this->addend_ = addend; |
e5d5f5ed AM |
5018 | } |
5019 | ||
bdab445c | 5020 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
5021 | { |
5022 | return (this->sym_ == that.sym_ | |
5023 | && this->object_ == that.object_ | |
e5d5f5ed AM |
5024 | && this->addend_ == that.addend_ |
5025 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 5026 | } |
c9269dff AM |
5027 | |
5028 | const Symbol* sym_; | |
e5d5f5ed AM |
5029 | const Sized_relobj_file<size, big_endian>* object_; |
5030 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
5031 | unsigned int locsym_; | |
cf43a2fe AM |
5032 | }; |
5033 | ||
bdab445c | 5034 | class Plt_stub_key_hash |
cf43a2fe | 5035 | { |
d1a8cabd | 5036 | public: |
bdab445c | 5037 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
5038 | { |
5039 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
5040 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
5041 | ^ ent.addend_ |
5042 | ^ ent.locsym_); | |
cf43a2fe | 5043 | } |
ec661b9d AM |
5044 | }; |
5045 | ||
5046 | // Long branch stub keys. | |
32f59844 | 5047 | class Branch_stub_key |
ec661b9d AM |
5048 | { |
5049 | public: | |
32f59844 AM |
5050 | Branch_stub_key(const Powerpc_relobj<size, big_endian>* obj, Address to) |
5051 | : dest_(to), toc_base_off_(0) | |
ec661b9d AM |
5052 | { |
5053 | if (size == 64) | |
5054 | toc_base_off_ = obj->toc_base_offset(); | |
5055 | } | |
5056 | ||
32f59844 | 5057 | bool operator==(const Branch_stub_key& that) const |
ec661b9d AM |
5058 | { |
5059 | return (this->dest_ == that.dest_ | |
5060 | && (size == 32 | |
5061 | || this->toc_base_off_ == that.toc_base_off_)); | |
5062 | } | |
cf43a2fe | 5063 | |
ec661b9d AM |
5064 | Address dest_; |
5065 | unsigned int toc_base_off_; | |
5066 | }; | |
cf43a2fe | 5067 | |
32f59844 | 5068 | class Branch_stub_key_hash |
ec661b9d AM |
5069 | { |
5070 | public: | |
32f59844 AM |
5071 | size_t operator()(const Branch_stub_key& key) const |
5072 | { return key.dest_ ^ key.toc_base_off_; } | |
ec661b9d | 5073 | }; |
cf43a2fe | 5074 | |
ec661b9d | 5075 | // In a sane world this would be a global. |
cf43a2fe | 5076 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 5077 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
5078 | Plt_stub_entries plt_call_stubs_; |
5079 | // Map destination address to stub offset. | |
ec661b9d AM |
5080 | Branch_stub_entries long_branch_stubs_; |
5081 | // size of input section | |
5082 | section_size_type orig_data_size_; | |
5083 | // size of stubs | |
9e69ed50 | 5084 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
5085 | // Some rare cases cause (PR/20529) fluctuation in stub table |
5086 | // size, which leads to an endless relax loop. This is to be fixed | |
5087 | // by, after the first few iterations, allowing only increase of | |
5088 | // stub table size. This variable sets the minimal possible size of | |
5089 | // a stub table, it is zero for the first few iterations, then | |
5090 | // increases monotonically. | |
5091 | Address min_size_threshold_; | |
d49044c7 AM |
5092 | // Set if this stub group needs a copy of out-of-line register |
5093 | // save/restore functions. | |
5094 | bool need_save_res_; | |
32f59844 AM |
5095 | // Set when notoc_/r2save_ changes after sizing a stub |
5096 | bool need_resize_; | |
5097 | // Set when resizing stubs | |
5098 | bool resizing_; | |
590b87ff AM |
5099 | // Per stub table unique identifier. |
5100 | uint32_t uniq_; | |
cf43a2fe AM |
5101 | }; |
5102 | ||
ec661b9d | 5103 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 5104 | // sym/object/addend combo. |
cf43a2fe AM |
5105 | |
5106 | template<int size, bool big_endian> | |
a3e60ddb | 5107 | bool |
ec661b9d | 5108 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5109 | Address from, |
c9824451 | 5110 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5111 | const Symbol* gsym, |
ec661b9d | 5112 | unsigned int r_type, |
7e57d19e AM |
5113 | Address addend, |
5114 | bool tocsave) | |
cf43a2fe | 5115 | { |
bdab445c AM |
5116 | Plt_stub_key key(object, gsym, r_type, addend); |
5117 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5118 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5119 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5120 | if (size == 64) |
7ee7ff70 | 5121 | { |
32f59844 | 5122 | if (p.second |
7ee7ff70 AM |
5123 | && this->targ_->is_elfv2_localentry0(gsym)) |
5124 | { | |
5125 | p.first->second.localentry0_ = 1; | |
5126 | this->targ_->set_has_localentry0(); | |
5127 | } | |
32f59844 AM |
5128 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5129 | { | |
e4dff765 | 5130 | if (!p.second && !p.first->second.notoc_ |
afd2ea23 AM |
5131 | && (!this->targ_->power10_stubs() |
5132 | || this->targ_->power10_stubs_auto())) | |
32f59844 AM |
5133 | this->need_resize_ = true; |
5134 | p.first->second.notoc_ = 1; | |
5135 | } | |
afd2ea23 | 5136 | else |
32f59844 | 5137 | { |
afd2ea23 | 5138 | if (!p.second && !p.first->second.toc_) |
32f59844 | 5139 | this->need_resize_ = true; |
afd2ea23 AM |
5140 | p.first->second.toc_ = 1; |
5141 | if (!tocsave && !p.first->second.localentry0_) | |
5142 | { | |
5143 | if (!p.second && !p.first->second.r2save_) | |
5144 | this->need_resize_ = true; | |
5145 | p.first->second.r2save_ = 1; | |
5146 | } | |
32f59844 AM |
5147 | } |
5148 | } | |
5149 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5150 | { | |
5151 | if (this->resizing_) | |
5152 | { | |
5153 | p.first->second.iter_ = 1; | |
5154 | p.first->second.off_ = this->plt_size_; | |
5155 | } | |
5156 | this->plt_size_ += this->plt_call_size(p.first); | |
34e0882b | 5157 | if (this->targ_->is_tls_get_addr_opt(gsym)) |
220f9906 | 5158 | this->targ_->set_has_tls_get_addr_opt(); |
34e0882b | 5159 | this->plt_size_ = this->plt_call_align(this->plt_size_); |
7ee7ff70 | 5160 | } |
32f59844 | 5161 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
cf43a2fe AM |
5162 | } |
5163 | ||
e5d5f5ed | 5164 | template<int size, bool big_endian> |
a3e60ddb | 5165 | bool |
ec661b9d | 5166 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5167 | Address from, |
c9824451 | 5168 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5169 | unsigned int locsym_index, |
ec661b9d | 5170 | unsigned int r_type, |
7e57d19e AM |
5171 | Address addend, |
5172 | bool tocsave) | |
e5d5f5ed | 5173 | { |
bdab445c AM |
5174 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5175 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5176 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5177 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5178 | if (size == 64) |
7ee7ff70 | 5179 | { |
32f59844 | 5180 | if (p.second |
7ee7ff70 AM |
5181 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) |
5182 | { | |
5183 | p.first->second.localentry0_ = 1; | |
5184 | this->targ_->set_has_localentry0(); | |
5185 | } | |
32f59844 AM |
5186 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5187 | { | |
e4dff765 | 5188 | if (!p.second && !p.first->second.notoc_ |
afd2ea23 AM |
5189 | && (!this->targ_->power10_stubs() |
5190 | || this->targ_->power10_stubs_auto())) | |
32f59844 AM |
5191 | this->need_resize_ = true; |
5192 | p.first->second.notoc_ = 1; | |
5193 | } | |
afd2ea23 | 5194 | else |
32f59844 | 5195 | { |
afd2ea23 | 5196 | if (!p.second && !p.first->second.toc_) |
32f59844 | 5197 | this->need_resize_ = true; |
afd2ea23 AM |
5198 | p.first->second.toc_ = 1; |
5199 | if (!tocsave && !p.first->second.localentry0_) | |
5200 | { | |
5201 | if (!p.second && !p.first->second.r2save_) | |
5202 | this->need_resize_ = true; | |
5203 | p.first->second.r2save_ = 1; | |
5204 | } | |
32f59844 | 5205 | } |
7ee7ff70 | 5206 | } |
32f59844 AM |
5207 | if (p.second || (this->resizing_ && !p.first->second.iter_)) |
5208 | { | |
5209 | if (this->resizing_) | |
5210 | { | |
5211 | p.first->second.iter_ = 1; | |
5212 | p.first->second.off_ = this->plt_size_; | |
5213 | } | |
5214 | this->plt_size_ += this->plt_call_size(p.first); | |
5215 | this->plt_size_ = this->plt_call_align(this->plt_size_); | |
5216 | } | |
5217 | return this->can_reach_stub(from, p.first->second.off_, r_type); | |
e5d5f5ed AM |
5218 | } |
5219 | ||
ec661b9d AM |
5220 | // Find a plt call stub. |
5221 | ||
cf43a2fe | 5222 | template<int size, bool big_endian> |
7e57d19e | 5223 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5224 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5225 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5226 | const Symbol* gsym, |
ec661b9d AM |
5227 | unsigned int r_type, |
5228 | Address addend) const | |
c9824451 | 5229 | { |
bdab445c AM |
5230 | Plt_stub_key key(object, gsym, r_type, addend); |
5231 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5232 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5233 | return NULL; |
5234 | return &p->second; | |
c9824451 AM |
5235 | } |
5236 | ||
5237 | template<int size, bool big_endian> | |
7e57d19e | 5238 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5239 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 5240 | { |
bdab445c AM |
5241 | Plt_stub_key key(gsym); |
5242 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5243 | if (p == this->plt_call_stubs_.end()) |
5244 | return NULL; | |
5245 | return &p->second; | |
cf43a2fe AM |
5246 | } |
5247 | ||
e5d5f5ed | 5248 | template<int size, bool big_endian> |
7e57d19e | 5249 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5250 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5251 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5252 | unsigned int locsym_index, |
ec661b9d AM |
5253 | unsigned int r_type, |
5254 | Address addend) const | |
e5d5f5ed | 5255 | { |
bdab445c AM |
5256 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5257 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5258 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5259 | return NULL; |
5260 | return &p->second; | |
c9824451 AM |
5261 | } |
5262 | ||
5263 | template<int size, bool big_endian> | |
7e57d19e | 5264 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5265 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
5266 | const Sized_relobj_file<size, big_endian>* object, |
5267 | unsigned int locsym_index) const | |
5268 | { | |
bdab445c AM |
5269 | Plt_stub_key key(object, locsym_index); |
5270 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5271 | if (p == this->plt_call_stubs_.end()) |
5272 | return NULL; | |
5273 | return &p->second; | |
ec661b9d AM |
5274 | } |
5275 | ||
5276 | // Add a long branch stub if we don't already have one to given | |
5277 | // destination. | |
5278 | ||
5279 | template<int size, bool big_endian> | |
a3e60ddb | 5280 | bool |
ec661b9d AM |
5281 | Stub_table<size, big_endian>::add_long_branch_entry( |
5282 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
5283 | unsigned int r_type, |
5284 | Address from, | |
d49044c7 | 5285 | Address to, |
fa40fbe4 | 5286 | unsigned int other, |
d49044c7 | 5287 | bool save_res) |
ec661b9d | 5288 | { |
32f59844 AM |
5289 | Branch_stub_key key(object, to); |
5290 | bool notoc = (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC); | |
5291 | Branch_stub_ent ent(this->branch_size_, notoc, save_res); | |
590b87ff | 5292 | std::pair<typename Branch_stub_entries::iterator, bool> p |
32f59844 | 5293 | = this->long_branch_stubs_.insert(std::make_pair(key, ent)); |
afd2ea23 | 5294 | if (notoc) |
ec661b9d | 5295 | { |
afd2ea23 AM |
5296 | if (!p.second && !p.first->second.notoc_) |
5297 | this->need_resize_ = true; | |
32f59844 AM |
5298 | p.first->second.notoc_ = true; |
5299 | } | |
afd2ea23 AM |
5300 | else |
5301 | { | |
5302 | if (!p.second && !p.first->second.toc_) | |
5303 | this->need_resize_ = true; | |
5304 | p.first->second.toc_ = true; | |
5305 | } | |
fa40fbe4 AM |
5306 | if (p.first->second.other_ == 0) |
5307 | p.first->second.other_ = other; | |
32f59844 AM |
5308 | gold_assert(save_res == p.first->second.save_res_); |
5309 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5310 | { | |
5311 | if (this->resizing_) | |
5312 | { | |
5313 | p.first->second.iter_ = 1; | |
5314 | p.first->second.off_ = this->branch_size_; | |
5315 | } | |
d49044c7 AM |
5316 | if (save_res) |
5317 | this->need_save_res_ = true; | |
5318 | else | |
5319 | { | |
32f59844 AM |
5320 | bool need_lt = false; |
5321 | unsigned int stub_size = this->branch_stub_size(p.first, &need_lt); | |
5322 | this->branch_size_ += stub_size; | |
5323 | if (size == 64 && need_lt) | |
d49044c7 AM |
5324 | this->targ_->add_branch_lookup_table(to); |
5325 | } | |
ec661b9d | 5326 | } |
32f59844 | 5327 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
ec661b9d AM |
5328 | } |
5329 | ||
d49044c7 | 5330 | // Find long branch stub offset. |
ec661b9d AM |
5331 | |
5332 | template<int size, bool big_endian> | |
32f59844 | 5333 | const typename Stub_table<size, big_endian>::Branch_stub_ent* |
ec661b9d AM |
5334 | Stub_table<size, big_endian>::find_long_branch_entry( |
5335 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 5336 | Address to) const |
ec661b9d | 5337 | { |
32f59844 | 5338 | Branch_stub_key key(object, to); |
ec661b9d | 5339 | typename Branch_stub_entries::const_iterator p |
32f59844 | 5340 | = this->long_branch_stubs_.find(key); |
d49044c7 | 5341 | if (p == this->long_branch_stubs_.end()) |
32f59844 AM |
5342 | return NULL; |
5343 | return &p->second; | |
e5d5f5ed AM |
5344 | } |
5345 | ||
220f9906 AM |
5346 | template<bool big_endian> |
5347 | static void | |
5348 | eh_advance (std::vector<unsigned char>& fde, unsigned int delta) | |
34e0882b | 5349 | { |
220f9906 AM |
5350 | delta /= 4; |
5351 | if (delta < 64) | |
5352 | fde.push_back(elfcpp::DW_CFA_advance_loc + delta); | |
5353 | else if (delta < 256) | |
34e0882b | 5354 | { |
220f9906 AM |
5355 | fde.push_back(elfcpp::DW_CFA_advance_loc1); |
5356 | fde.push_back(delta); | |
5357 | } | |
5358 | else if (delta < 65536) | |
5359 | { | |
5360 | fde.resize(fde.size() + 3); | |
5361 | unsigned char *p = &*fde.end() - 3; | |
5362 | *p++ = elfcpp::DW_CFA_advance_loc2; | |
5363 | elfcpp::Swap<16, big_endian>::writeval(p, delta); | |
5364 | } | |
5365 | else | |
5366 | { | |
5367 | fde.resize(fde.size() + 5); | |
5368 | unsigned char *p = &*fde.end() - 5; | |
5369 | *p++ = elfcpp::DW_CFA_advance_loc4; | |
5370 | elfcpp::Swap<32, big_endian>::writeval(p, delta); | |
34e0882b | 5371 | } |
220f9906 AM |
5372 | } |
5373 | ||
5374 | template<typename T> | |
5375 | static bool | |
5376 | stub_sort(T s1, T s2) | |
5377 | { | |
5378 | return s1->second.off_ < s2->second.off_; | |
34e0882b AM |
5379 | } |
5380 | ||
5381 | // Add .eh_frame info for this stub section. Unlike other linker | |
5382 | // generated .eh_frame this is added late in the link, because we | |
5383 | // only want the .eh_frame info if this particular stub section is | |
5384 | // non-empty. | |
5385 | ||
5386 | template<int size, bool big_endian> | |
5387 | void | |
5388 | Stub_table<size, big_endian>::add_eh_frame(Layout* layout) | |
5389 | { | |
220f9906 AM |
5390 | if (size != 64 |
5391 | || !parameters->options().ld_generated_unwind_info()) | |
34e0882b AM |
5392 | return; |
5393 | ||
5394 | // Since we add stub .eh_frame info late, it must be placed | |
5395 | // after all other linker generated .eh_frame info so that | |
5396 | // merge mapping need not be updated for input sections. | |
5397 | // There is no provision to use a different CIE to that used | |
5398 | // by .glink. | |
5399 | if (!this->targ_->has_glink()) | |
5400 | return; | |
5401 | ||
afd2ea23 | 5402 | typedef typename Plt_stub_entries::iterator plt_iter; |
220f9906 AM |
5403 | std::vector<plt_iter> calls; |
5404 | if (!this->plt_call_stubs_.empty()) | |
5405 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5406 | cs != this->plt_call_stubs_.end(); | |
5407 | ++cs) | |
5408 | if ((this->targ_->is_tls_get_addr_opt(cs->first.sym_) | |
5409 | && cs->second.r2save_ | |
5410 | && !cs->second.localentry0_) | |
e4dff765 | 5411 | || (cs->second.notoc_ |
7c1f4227 | 5412 | && !this->targ_->power10_stubs())) |
220f9906 AM |
5413 | calls.push_back(cs); |
5414 | if (calls.size() > 1) | |
5415 | std::stable_sort(calls.begin(), calls.end(), | |
5416 | stub_sort<plt_iter>); | |
5417 | ||
5418 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5419 | std::vector<branch_iter> branches; | |
e4dff765 | 5420 | if (!this->long_branch_stubs_.empty() |
7c1f4227 | 5421 | && !this->targ_->power10_stubs()) |
220f9906 AM |
5422 | for (branch_iter bs = this->long_branch_stubs_.begin(); |
5423 | bs != this->long_branch_stubs_.end(); | |
5424 | ++bs) | |
5425 | if (bs->second.notoc_) | |
5426 | branches.push_back(bs); | |
5427 | if (branches.size() > 1) | |
5428 | std::stable_sort(branches.begin(), branches.end(), | |
5429 | stub_sort<branch_iter>); | |
5430 | ||
5431 | if (calls.empty() && branches.empty()) | |
34e0882b AM |
5432 | return; |
5433 | ||
220f9906 AM |
5434 | unsigned int last_eh_loc = 0; |
5435 | // offset pcrel sdata4, size udata4, and augmentation size byte. | |
5436 | std::vector<unsigned char> fde(9, 0); | |
5437 | ||
5438 | for (unsigned int i = 0; i < calls.size(); i++) | |
5439 | { | |
5440 | plt_iter cs = calls[i]; | |
5441 | unsigned int off = cs->second.off_; | |
5442 | // The __tls_get_addr_opt call stub needs to describe where | |
5443 | // it saves LR, to support exceptions that might be thrown | |
5444 | // from __tls_get_addr, and to support asynchronous exceptions. | |
5445 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
5446 | { | |
5447 | off += 7 * 4; | |
5448 | if (cs->second.r2save_ | |
5449 | && !cs->second.localentry0_) | |
5450 | { | |
5451 | off += 2 * 4; | |
5452 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5453 | fde.resize(fde.size() + 6); | |
5454 | unsigned char* p = &*fde.end() - 6; | |
5455 | *p++ = elfcpp::DW_CFA_offset_extended_sf; | |
5456 | *p++ = 65; | |
5457 | *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; | |
5458 | unsigned int delta = this->plt_call_size(cs) - 4 - 9 * 4; | |
5459 | *p++ = elfcpp::DW_CFA_advance_loc + delta / 4; | |
5460 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5461 | *p++ = 65; | |
5462 | last_eh_loc = off + delta; | |
5463 | continue; | |
5464 | } | |
5465 | } | |
5466 | // notoc stubs also should describe LR changes, to support | |
5467 | // asynchronous exceptions. | |
5468 | off += (cs->second.r2save_ ? 4 : 0) + 8; | |
5469 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5470 | fde.resize(fde.size() + 6); | |
5471 | unsigned char* p = &*fde.end() - 6; | |
5472 | *p++ = elfcpp::DW_CFA_register; | |
5473 | *p++ = 65; | |
5474 | *p++ = 12; | |
5475 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5476 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5477 | *p++ = 65; | |
5478 | last_eh_loc = off + 8; | |
5479 | } | |
5480 | ||
5481 | for (unsigned int i = 0; i < branches.size(); i++) | |
5482 | { | |
5483 | branch_iter bs = branches[i]; | |
5484 | unsigned int off = bs->second.off_ + 8; | |
5485 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5486 | fde.resize(fde.size() + 6); | |
5487 | unsigned char* p = &*fde.end() - 6; | |
5488 | *p++ = elfcpp::DW_CFA_register; | |
5489 | *p++ = 65; | |
5490 | *p++ = 12; | |
5491 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5492 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5493 | *p++ = 65; | |
5494 | last_eh_loc = off + 8; | |
5495 | } | |
5496 | ||
34e0882b AM |
5497 | layout->add_eh_frame_for_plt(this, |
5498 | Eh_cie<size>::eh_frame_cie, | |
5499 | sizeof (Eh_cie<size>::eh_frame_cie), | |
220f9906 | 5500 | &*fde.begin(), fde.size()); |
34e0882b AM |
5501 | } |
5502 | ||
5503 | template<int size, bool big_endian> | |
5504 | void | |
5505 | Stub_table<size, big_endian>::remove_eh_frame(Layout* layout) | |
5506 | { | |
220f9906 AM |
5507 | if (size == 64 |
5508 | && parameters->options().ld_generated_unwind_info() | |
5509 | && this->targ_->has_glink()) | |
5510 | layout->remove_eh_frame_for_plt(this, | |
5511 | Eh_cie<size>::eh_frame_cie, | |
5512 | sizeof (Eh_cie<size>::eh_frame_cie)); | |
34e0882b AM |
5513 | } |
5514 | ||
ec661b9d AM |
5515 | // A class to handle .glink. |
5516 | ||
5517 | template<int size, bool big_endian> | |
5518 | class Output_data_glink : public Output_section_data | |
5519 | { | |
5520 | public: | |
9055360d AM |
5521 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
5522 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
5523 | |
5524 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
5525 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
5526 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
5527 | { } |
5528 | ||
9d5781f8 | 5529 | void |
9055360d | 5530 | add_eh_frame(Layout* layout); |
9d5781f8 | 5531 | |
9055360d AM |
5532 | void |
5533 | add_global_entry(const Symbol*); | |
5534 | ||
5535 | Address | |
5536 | find_global_entry(const Symbol*) const; | |
5537 | ||
9e390558 AM |
5538 | unsigned int |
5539 | global_entry_align(unsigned int off) const | |
5540 | { | |
691d2e9a | 5541 | unsigned int align = param_plt_align<size>(); |
9e390558 AM |
5542 | return (off + align - 1) & -align; |
5543 | } | |
5544 | ||
5545 | unsigned int | |
5546 | global_entry_off() const | |
5547 | { | |
5548 | return this->global_entry_align(this->end_branch_table_); | |
5549 | } | |
5550 | ||
9055360d AM |
5551 | Address |
5552 | global_entry_address() const | |
5553 | { | |
5554 | gold_assert(this->is_data_size_valid()); | |
9e390558 AM |
5555 | return this->address() + this->global_entry_off(); |
5556 | } | |
5557 | ||
5558 | int | |
5559 | pltresolve_size() const | |
5560 | { | |
5561 | if (size == 64) | |
5562 | return (8 | |
63e5eea2 AM |
5563 | + (this->targ_->abiversion() < 2 ? 11 * 4 |
5564 | : this->targ_->has_localentry0() ? 14 * 4 : 13 * 4)); | |
9e390558 | 5565 | return 16 * 4; |
9d5781f8 AM |
5566 | } |
5567 | ||
ec661b9d AM |
5568 | protected: |
5569 | // Write to a map file. | |
5570 | void | |
5571 | do_print_to_mapfile(Mapfile* mapfile) const | |
5572 | { mapfile->print_output_data(this, _("** glink")); } | |
5573 | ||
5574 | private: | |
5575 | void | |
5576 | set_final_data_size(); | |
5577 | ||
5578 | // Write out .glink | |
5579 | void | |
5580 | do_write(Output_file*); | |
5581 | ||
5582 | // Allows access to .got and .plt for do_write. | |
5583 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
5584 | |
5585 | // Map sym to stub offset. | |
5586 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
5587 | Global_entry_stub_entries global_entry_stubs_; | |
5588 | ||
5589 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
5590 | }; |
5591 | ||
9055360d AM |
5592 | template<int size, bool big_endian> |
5593 | void | |
5594 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
5595 | { | |
5596 | if (!parameters->options().ld_generated_unwind_info()) | |
5597 | return; | |
5598 | ||
5599 | if (size == 64) | |
5600 | { | |
5601 | if (this->targ_->abiversion() < 2) | |
5602 | layout->add_eh_frame_for_plt(this, | |
5603 | Eh_cie<64>::eh_frame_cie, | |
5604 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5605 | glink_eh_frame_fde_64v1, | |
5606 | sizeof (glink_eh_frame_fde_64v1)); | |
63e5eea2 AM |
5607 | else if (this->targ_->has_localentry0()) |
5608 | layout->add_eh_frame_for_plt(this, | |
5609 | Eh_cie<64>::eh_frame_cie, | |
5610 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5611 | glink_eh_frame_fde_64v2_localentry0, | |
5612 | sizeof (glink_eh_frame_fde_64v2)); | |
9055360d AM |
5613 | else |
5614 | layout->add_eh_frame_for_plt(this, | |
5615 | Eh_cie<64>::eh_frame_cie, | |
5616 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5617 | glink_eh_frame_fde_64v2, | |
5618 | sizeof (glink_eh_frame_fde_64v2)); | |
5619 | } | |
5620 | else | |
5621 | { | |
5622 | // 32-bit .glink can use the default since the CIE return | |
5623 | // address reg, LR, is valid. | |
5624 | layout->add_eh_frame_for_plt(this, | |
5625 | Eh_cie<32>::eh_frame_cie, | |
5626 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5627 | default_fde, | |
5628 | sizeof (default_fde)); | |
5629 | // Except where LR is used in a PIC __glink_PLTresolve. | |
5630 | if (parameters->options().output_is_position_independent()) | |
5631 | layout->add_eh_frame_for_plt(this, | |
5632 | Eh_cie<32>::eh_frame_cie, | |
5633 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5634 | glink_eh_frame_fde_32, | |
5635 | sizeof (glink_eh_frame_fde_32)); | |
5636 | } | |
5637 | } | |
5638 | ||
5639 | template<int size, bool big_endian> | |
5640 | void | |
5641 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
5642 | { | |
9e390558 | 5643 | unsigned int off = this->global_entry_align(this->ge_size_); |
9055360d | 5644 | std::pair<typename Global_entry_stub_entries::iterator, bool> p |
9e390558 | 5645 | = this->global_entry_stubs_.insert(std::make_pair(gsym, off)); |
9055360d | 5646 | if (p.second) |
407aa07c | 5647 | this->ge_size_ = off + 16; |
9055360d AM |
5648 | } |
5649 | ||
5650 | template<int size, bool big_endian> | |
5651 | typename Output_data_glink<size, big_endian>::Address | |
5652 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
5653 | { | |
5654 | typename Global_entry_stub_entries::const_iterator p | |
5655 | = this->global_entry_stubs_.find(gsym); | |
5656 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
5657 | } | |
5658 | ||
cf43a2fe AM |
5659 | template<int size, bool big_endian> |
5660 | void | |
5661 | Output_data_glink<size, big_endian>::set_final_data_size() | |
5662 | { | |
ec661b9d AM |
5663 | unsigned int count = this->targ_->plt_entry_count(); |
5664 | section_size_type total = 0; | |
cf43a2fe AM |
5665 | |
5666 | if (count != 0) | |
5667 | { | |
5668 | if (size == 32) | |
5669 | { | |
cf43a2fe AM |
5670 | // space for branch table |
5671 | total += 4 * (count - 1); | |
5672 | ||
5673 | total += -total & 15; | |
9e390558 | 5674 | total += this->pltresolve_size(); |
cf43a2fe AM |
5675 | } |
5676 | else | |
5677 | { | |
9e390558 | 5678 | total += this->pltresolve_size(); |
cf43a2fe AM |
5679 | |
5680 | // space for branch table | |
b4f7960d AM |
5681 | total += 4 * count; |
5682 | if (this->targ_->abiversion() < 2) | |
5683 | { | |
5684 | total += 4 * count; | |
5685 | if (count > 0x8000) | |
5686 | total += 4 * (count - 0x8000); | |
5687 | } | |
cf43a2fe AM |
5688 | } |
5689 | } | |
9055360d | 5690 | this->end_branch_table_ = total; |
9e390558 | 5691 | total = this->global_entry_align(total); |
9055360d | 5692 | total += this->ge_size_; |
cf43a2fe AM |
5693 | |
5694 | this->set_data_size(total); | |
5695 | } | |
5696 | ||
590b87ff AM |
5697 | // Define symbols on stubs, identifying the stub. |
5698 | ||
5699 | template<int size, bool big_endian> | |
5700 | void | |
5701 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
5702 | { | |
5703 | if (!this->plt_call_stubs_.empty()) | |
5704 | { | |
5705 | // The key for the plt call stub hash table includes addresses, | |
5706 | // therefore traversal order depends on those addresses, which | |
5707 | // can change between runs if gold is a PIE. Unfortunately the | |
5708 | // output .symtab ordering depends on the order in which symbols | |
5709 | // are added to the linker symtab. We want reproducible output | |
5710 | // so must sort the call stub symbols. | |
afd2ea23 | 5711 | typedef typename Plt_stub_entries::iterator plt_iter; |
590b87ff AM |
5712 | std::vector<plt_iter> sorted; |
5713 | sorted.resize(this->plt_call_stubs_.size()); | |
5714 | ||
5715 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5716 | cs != this->plt_call_stubs_.end(); | |
5717 | ++cs) | |
bdab445c | 5718 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
5719 | |
5720 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
5721 | { | |
5722 | plt_iter cs = sorted[i]; | |
5723 | char add[10]; | |
5724 | add[0] = 0; | |
5725 | if (cs->first.addend_ != 0) | |
5726 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
5727 | char obj[10]; |
5728 | obj[0] = 0; | |
5729 | if (cs->first.object_) | |
590b87ff AM |
5730 | { |
5731 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5732 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
5733 | sprintf(obj, "%x:", ppcobj->uniq()); |
5734 | } | |
5735 | char localname[9]; | |
5736 | const char *symname; | |
5737 | if (cs->first.sym_ == NULL) | |
5738 | { | |
5739 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
5740 | symname = localname; |
5741 | } | |
34e0882b AM |
5742 | else if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
5743 | symname = this->targ_->tls_get_addr_opt()->name(); | |
590b87ff AM |
5744 | else |
5745 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
5746 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
5747 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
5748 | Address value |
5749 | = this->stub_address() - this->address() + cs->second.off_; | |
34e0882b | 5750 | unsigned int stub_size = this->plt_call_align(this->plt_call_size(cs)); |
590b87ff AM |
5751 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5752 | } | |
5753 | } | |
5754 | ||
afd2ea23 | 5755 | typedef typename Branch_stub_entries::iterator branch_iter; |
590b87ff AM |
5756 | for (branch_iter bs = this->long_branch_stubs_.begin(); |
5757 | bs != this->long_branch_stubs_.end(); | |
5758 | ++bs) | |
5759 | { | |
32f59844 | 5760 | if (bs->second.save_res_) |
590b87ff AM |
5761 | continue; |
5762 | ||
5763 | char* name = new char[8 + 13 + 16 + 1]; | |
5764 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
5765 | static_cast<unsigned long long>(bs->first.dest_)); | |
5766 | Address value = (this->stub_address() - this->address() | |
32f59844 AM |
5767 | + this->plt_size_ + bs->second.off_); |
5768 | bool need_lt = false; | |
5769 | unsigned int stub_size = this->branch_stub_size(bs, &need_lt); | |
590b87ff AM |
5770 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5771 | } | |
5772 | } | |
5773 | ||
32f59844 AM |
5774 | // Emit the start of a __tls_get_addr_opt plt call stub. |
5775 | ||
5776 | template<int size, bool big_endian> | |
afd2ea23 AM |
5777 | void |
5778 | Stub_table<size, big_endian>::build_tls_opt_head(unsigned char** pp, | |
5779 | bool save_lr) | |
32f59844 | 5780 | { |
afd2ea23 AM |
5781 | unsigned char* p = *pp; |
5782 | if (size == 64) | |
32f59844 | 5783 | { |
afd2ea23 AM |
5784 | write_insn<big_endian>(p, ld_11_3 + 0); |
5785 | p += 4; | |
5786 | write_insn<big_endian>(p, ld_12_3 + 8); | |
5787 | p += 4; | |
5788 | write_insn<big_endian>(p, mr_0_3); | |
5789 | p += 4; | |
5790 | write_insn<big_endian>(p, cmpdi_11_0); | |
5791 | p += 4; | |
5792 | write_insn<big_endian>(p, add_3_12_13); | |
5793 | p += 4; | |
5794 | write_insn<big_endian>(p, beqlr); | |
5795 | p += 4; | |
5796 | write_insn<big_endian>(p, mr_3_0); | |
5797 | p += 4; | |
5798 | if (save_lr) | |
32f59844 | 5799 | { |
afd2ea23 | 5800 | write_insn<big_endian>(p, mflr_11); |
32f59844 | 5801 | p += 4; |
afd2ea23 | 5802 | write_insn<big_endian>(p, (std_11_1 + this->targ_->stk_linker())); |
32f59844 AM |
5803 | p += 4; |
5804 | } | |
32f59844 | 5805 | } |
afd2ea23 | 5806 | else |
32f59844 | 5807 | { |
afd2ea23 | 5808 | write_insn<big_endian>(p, lwz_11_3 + 0); |
32f59844 | 5809 | p += 4; |
afd2ea23 | 5810 | write_insn<big_endian>(p, lwz_12_3 + 4); |
32f59844 | 5811 | p += 4; |
afd2ea23 | 5812 | write_insn<big_endian>(p, mr_0_3); |
32f59844 | 5813 | p += 4; |
afd2ea23 AM |
5814 | write_insn<big_endian>(p, cmpwi_11_0); |
5815 | p += 4; | |
5816 | write_insn<big_endian>(p, add_3_12_2); | |
5817 | p += 4; | |
5818 | write_insn<big_endian>(p, beqlr); | |
5819 | p += 4; | |
5820 | write_insn<big_endian>(p, mr_3_0); | |
5821 | p += 4; | |
5822 | write_insn<big_endian>(p, nop); | |
32f59844 | 5823 | p += 4; |
32f59844 | 5824 | } |
afd2ea23 AM |
5825 | *pp = p; |
5826 | } | |
5827 | ||
5828 | // Emit the tail of a __tls_get_addr_opt plt call stub. | |
5829 | ||
5830 | template<int size, bool big_endian> | |
5831 | void | |
5832 | Stub_table<size, big_endian>::build_tls_opt_tail(unsigned char* p) | |
5833 | { | |
5834 | write_insn<big_endian>(p, bctrl); | |
5835 | p += 4; | |
5836 | write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); | |
5837 | p += 4; | |
5838 | write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); | |
5839 | p += 4; | |
5840 | write_insn<big_endian>(p, mtlr_11); | |
5841 | p += 4; | |
5842 | write_insn<big_endian>(p, blr); | |
32f59844 AM |
5843 | } |
5844 | ||
e4dff765 AM |
5845 | // Emit pc-relative plt call stub code. |
5846 | ||
5847 | template<bool big_endian> | |
5848 | static unsigned char* | |
7c1f4227 | 5849 | build_power10_offset(unsigned char* p, uint64_t off, uint64_t odd, bool load) |
e4dff765 AM |
5850 | { |
5851 | uint64_t insn; | |
5852 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
5853 | { | |
5854 | off -= odd; | |
5855 | if (odd) | |
5856 | { | |
5857 | write_insn<big_endian>(p, nop); | |
5858 | p += 4; | |
5859 | } | |
5860 | if (load) | |
5861 | insn = pld_12_pc; | |
5862 | else | |
5863 | insn = paddi_12_pc; | |
5864 | insn |= d34(off); | |
5865 | write_insn<big_endian>(p, insn >> 32); | |
5866 | p += 4; | |
5867 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5868 | } | |
5869 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
5870 | { | |
5871 | off -= 8 - odd; | |
5872 | write_insn<big_endian>(p, li_11_0 | (ha34(off) & 0xffff)); | |
5873 | p += 4; | |
5874 | if (!odd) | |
5875 | { | |
5876 | write_insn<big_endian>(p, sldi_11_11_34); | |
5877 | p += 4; | |
5878 | } | |
5879 | insn = paddi_12_pc | d34(off); | |
5880 | write_insn<big_endian>(p, insn >> 32); | |
5881 | p += 4; | |
5882 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5883 | p += 4; | |
5884 | if (odd) | |
5885 | { | |
5886 | write_insn<big_endian>(p, sldi_11_11_34); | |
5887 | p += 4; | |
5888 | } | |
5889 | if (load) | |
5890 | write_insn<big_endian>(p, ldx_12_11_12); | |
5891 | else | |
5892 | write_insn<big_endian>(p, add_12_11_12); | |
5893 | } | |
5894 | else | |
5895 | { | |
5896 | off -= odd + 8; | |
5897 | write_insn<big_endian>(p, lis_11 | ((ha34(off) >> 16) & 0x3fff)); | |
5898 | p += 4; | |
5899 | write_insn<big_endian>(p, ori_11_11_0 | (ha34(off) & 0xffff)); | |
5900 | p += 4; | |
5901 | if (odd) | |
5902 | { | |
5903 | write_insn<big_endian>(p, sldi_11_11_34); | |
5904 | p += 4; | |
5905 | } | |
5906 | insn = paddi_12_pc | d34(off); | |
5907 | write_insn<big_endian>(p, insn >> 32); | |
5908 | p += 4; | |
5909 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5910 | p += 4; | |
5911 | if (!odd) | |
5912 | { | |
5913 | write_insn<big_endian>(p, sldi_11_11_34); | |
5914 | p += 4; | |
5915 | } | |
5916 | if (load) | |
5917 | write_insn<big_endian>(p, ldx_12_11_12); | |
5918 | else | |
5919 | write_insn<big_endian>(p, add_12_11_12); | |
5920 | } | |
5921 | p += 4; | |
5922 | return p; | |
5923 | } | |
5924 | ||
32f59844 AM |
5925 | // Gets the address of a label (1:) in r11 and builds an offset in r12, |
5926 | // then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
5927 | // mflr %r12 | |
5928 | // bcl 20,31,1f | |
5929 | // 1: mflr %r11 | |
5930 | // mtlr %r12 | |
5931 | // lis %r12,xxx-1b@highest | |
5932 | // ori %r12,%r12,xxx-1b@higher | |
5933 | // sldi %r12,%r12,32 | |
5934 | // oris %r12,%r12,xxx-1b@high | |
5935 | // ori %r12,%r12,xxx-1b@l | |
5936 | // add/ldx %r12,%r11,%r12 | |
5937 | ||
5938 | template<bool big_endian> | |
5939 | static unsigned char* | |
5940 | build_notoc_offset(unsigned char* p, uint64_t off, bool load) | |
5941 | { | |
5942 | write_insn<big_endian>(p, mflr_12); | |
5943 | p += 4; | |
5944 | write_insn<big_endian>(p, bcl_20_31); | |
5945 | p += 4; | |
5946 | write_insn<big_endian>(p, mflr_11); | |
5947 | p += 4; | |
5948 | write_insn<big_endian>(p, mtlr_12); | |
5949 | p += 4; | |
5950 | if (off + 0x8000 < 0x10000) | |
5951 | { | |
5952 | if (load) | |
5953 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
5954 | else | |
5955 | write_insn<big_endian>(p, addi_12_11 + l(off)); | |
5956 | } | |
5957 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
5958 | { | |
5959 | write_insn<big_endian>(p, addis_12_11 + ha(off)); | |
5960 | p += 4; | |
5961 | if (load) | |
5962 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
5963 | else | |
5964 | write_insn<big_endian>(p, addi_12_12 + l(off)); | |
5965 | } | |
5966 | else | |
5967 | { | |
5968 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
5969 | { | |
5970 | write_insn<big_endian>(p, li_12_0 + ((off >> 32) & 0xffff)); | |
5971 | p += 4; | |
5972 | } | |
5973 | else | |
5974 | { | |
5975 | write_insn<big_endian>(p, lis_12 + ((off >> 48) & 0xffff)); | |
5976 | p += 4; | |
5977 | if (((off >> 32) & 0xffff) != 0) | |
5978 | { | |
5979 | write_insn<big_endian>(p, ori_12_12_0 + ((off >> 32) & 0xffff)); | |
5980 | p += 4; | |
5981 | } | |
5982 | } | |
5983 | if (((off >> 32) & 0xffffffffULL) != 0) | |
5984 | { | |
5985 | write_insn<big_endian>(p, sldi_12_12_32); | |
5986 | p += 4; | |
5987 | } | |
5988 | if (hi(off) != 0) | |
5989 | { | |
5990 | write_insn<big_endian>(p, oris_12_12_0 + hi(off)); | |
5991 | p += 4; | |
5992 | } | |
5993 | if (l(off) != 0) | |
5994 | { | |
5995 | write_insn<big_endian>(p, ori_12_12_0 + l(off)); | |
5996 | p += 4; | |
5997 | } | |
5998 | if (load) | |
5999 | write_insn<big_endian>(p, ldx_12_11_12); | |
6000 | else | |
6001 | write_insn<big_endian>(p, add_12_11_12); | |
6002 | } | |
6003 | p += 4; | |
6004 | return p; | |
6005 | } | |
6006 | ||
6007 | // Size of a given plt call stub. | |
6008 | ||
6009 | template<int size, bool big_endian> | |
6010 | unsigned int | |
6011 | Stub_table<size, big_endian>::plt_call_size( | |
afd2ea23 | 6012 | typename Plt_stub_entries::iterator p) const |
32f59844 AM |
6013 | { |
6014 | if (size == 32) | |
6015 | { | |
6016 | const Symbol* gsym = p->first.sym_; | |
6017 | return (4 * 4 | |
6018 | + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); | |
6019 | } | |
6020 | ||
6021 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6022 | uint64_t plt_addr = this->plt_off(p, &plt); | |
6023 | plt_addr += plt->address(); | |
afd2ea23 AM |
6024 | if (this->targ_->power10_stubs() |
6025 | && this->targ_->power10_stubs_auto()) | |
32f59844 | 6026 | { |
afd2ea23 AM |
6027 | unsigned int bytes = 0; |
6028 | if (p->second.notoc_) | |
6029 | { | |
6030 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6031 | bytes = 7 * 4; | |
6032 | uint64_t from = this->stub_address() + p->second.off_ + bytes; | |
6033 | uint64_t odd = from & 4; | |
6034 | uint64_t off = plt_addr - from; | |
6035 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6036 | bytes += odd + 4 * 4; | |
6037 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6038 | bytes += 7 * 4; | |
6039 | else | |
6040 | bytes += 8 * 4; | |
6041 | bytes = this->plt_call_align(bytes); | |
6042 | } | |
6043 | unsigned int tail = 0; | |
6044 | if (p->second.toc_) | |
6045 | { | |
6046 | p->second.tocoff_ = bytes; | |
6047 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6048 | { | |
6049 | bytes += 7 * 4; | |
6050 | if (p->second.r2save_ && !p->second.localentry0_) | |
6051 | { | |
6052 | bytes += 2 * 4; | |
6053 | tail = 4 * 4; | |
6054 | } | |
6055 | } | |
6056 | if (p->second.r2save_) | |
6057 | bytes += 4; | |
6058 | uint64_t got_addr | |
6059 | = this->targ_->got_section()->output_section()->address(); | |
6060 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6061 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
6062 | got_addr += ppcobj->toc_base_offset(); | |
6063 | uint64_t off = plt_addr - got_addr; | |
6064 | bytes += 3 * 4 + 4 * (ha(off) != 0); | |
6065 | } | |
6066 | return bytes + tail; | |
32f59844 | 6067 | } |
afd2ea23 AM |
6068 | else |
6069 | { | |
6070 | unsigned int bytes = 0; | |
6071 | unsigned int tail = 0; | |
6072 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6073 | { | |
6074 | bytes = 7 * 4; | |
6075 | if (p->second.r2save_ && !p->second.localentry0_) | |
6076 | { | |
6077 | bytes = 9 * 4; | |
6078 | tail = 4 * 4; | |
6079 | } | |
6080 | } | |
32f59844 | 6081 | |
afd2ea23 AM |
6082 | if (p->second.r2save_) |
6083 | bytes += 4; | |
32f59844 | 6084 | |
afd2ea23 AM |
6085 | if (this->targ_->power10_stubs()) |
6086 | { | |
6087 | uint64_t from = this->stub_address() + p->second.off_ + bytes; | |
6088 | uint64_t odd = from & 4; | |
6089 | uint64_t off = plt_addr - from; | |
6090 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6091 | bytes += odd + 4 * 4; | |
6092 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6093 | bytes += 7 * 4; | |
6094 | else | |
6095 | bytes += 8 * 4; | |
6096 | return bytes + tail; | |
6097 | } | |
e4dff765 | 6098 | |
afd2ea23 | 6099 | if (p->second.notoc_) |
32f59844 | 6100 | { |
afd2ea23 AM |
6101 | uint64_t from = this->stub_address() + p->second.off_ + bytes + 2 * 4; |
6102 | uint64_t off = plt_addr - from; | |
6103 | if (off + 0x8000 < 0x10000) | |
6104 | bytes += 7 * 4; | |
6105 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
6106 | bytes += 8 * 4; | |
6107 | else | |
6108 | { | |
6109 | bytes += 8 * 4; | |
6110 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
6111 | && ((off >> 32) & 0xffff) != 0) | |
6112 | bytes += 4; | |
6113 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6114 | bytes += 4; | |
6115 | if (hi(off) != 0) | |
6116 | bytes += 4; | |
6117 | if (l(off) != 0) | |
6118 | bytes += 4; | |
6119 | } | |
6120 | return bytes + tail; | |
32f59844 | 6121 | } |
32f59844 | 6122 | |
afd2ea23 AM |
6123 | uint64_t got_addr = this->targ_->got_section()->output_section()->address(); |
6124 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6125 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
6126 | got_addr += ppcobj->toc_base_offset(); | |
6127 | uint64_t off = plt_addr - got_addr; | |
6128 | bytes += 3 * 4 + 4 * (ha(off) != 0); | |
6129 | if (this->targ_->abiversion() < 2) | |
6130 | { | |
6131 | bool static_chain = parameters->options().plt_static_chain(); | |
6132 | bool thread_safe = this->targ_->plt_thread_safe(); | |
6133 | bytes += (4 | |
6134 | + 4 * static_chain | |
6135 | + 8 * thread_safe | |
6136 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
6137 | } | |
6138 | return bytes + tail; | |
32f59844 | 6139 | } |
32f59844 AM |
6140 | } |
6141 | ||
6142 | // Return long branch stub size. | |
6143 | ||
6144 | template<int size, bool big_endian> | |
6145 | unsigned int | |
6146 | Stub_table<size, big_endian>::branch_stub_size( | |
afd2ea23 | 6147 | typename Branch_stub_entries::iterator p, |
32f59844 AM |
6148 | bool* need_lt) |
6149 | { | |
6150 | Address loc = this->stub_address() + this->last_plt_size_ + p->second.off_; | |
6151 | if (size == 32) | |
6152 | { | |
6153 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
6154 | return 4; | |
6155 | if (parameters->options().output_is_position_independent()) | |
6156 | return 32; | |
6157 | return 16; | |
6158 | } | |
6159 | ||
6160 | uint64_t off = p->first.dest_ - loc; | |
afd2ea23 | 6161 | unsigned int bytes = 0; |
32f59844 AM |
6162 | if (p->second.notoc_) |
6163 | { | |
7c1f4227 | 6164 | if (this->targ_->power10_stubs()) |
e4dff765 AM |
6165 | { |
6166 | Address odd = loc & 4; | |
6167 | if (off + (1 << 25) < 2 << 25) | |
afd2ea23 AM |
6168 | bytes = odd + 12; |
6169 | else if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6170 | bytes = odd + 16; | |
6171 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6172 | bytes = 28; | |
6173 | else | |
6174 | bytes = 32; | |
6175 | if (!(p->second.toc_ && this->targ_->power10_stubs_auto())) | |
6176 | return bytes; | |
6177 | p->second.tocoff_ = bytes; | |
6178 | } | |
6179 | else | |
6180 | { | |
6181 | off -= 8; | |
6182 | if (off + 0x8000 < 0x10000) | |
6183 | return 24; | |
6184 | if (off + 0x80008000ULL < 0x100000000ULL) | |
6185 | { | |
6186 | if (off + 24 + (1 << 25) < 2 << 25) | |
6187 | return 28; | |
6188 | return 32; | |
6189 | } | |
6190 | ||
6191 | bytes = 32; | |
6192 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
6193 | && ((off >> 32) & 0xffff) != 0) | |
6194 | bytes += 4; | |
6195 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6196 | bytes += 4; | |
6197 | if (hi(off) != 0) | |
6198 | bytes += 4; | |
6199 | if (l(off) != 0) | |
6200 | bytes += 4; | |
6201 | return bytes; | |
6202 | } | |
32f59844 AM |
6203 | } |
6204 | ||
fa40fbe4 | 6205 | off += elfcpp::ppc64_decode_local_entry(p->second.other_); |
32f59844 | 6206 | if (off + (1 << 25) < 2 << 25) |
afd2ea23 AM |
6207 | return bytes + 4; |
6208 | if (!this->targ_->power10_stubs() | |
6209 | || (p->second.toc_ && this->targ_->power10_stubs_auto())) | |
e4dff765 | 6210 | *need_lt = true; |
afd2ea23 | 6211 | return bytes + 16; |
32f59844 AM |
6212 | } |
6213 | ||
f073a3e8 AM |
6214 | template<int size, bool big_endian> |
6215 | void | |
6216 | Stub_table<size, big_endian>::plt_error(const Plt_stub_key& p) | |
6217 | { | |
6218 | if (p.sym_) | |
6219 | gold_error(_("linkage table error against `%s'"), | |
6220 | p.sym_->demangled_name().c_str()); | |
6221 | else | |
6222 | gold_error(_("linkage table error against `%s:[local %u]'"), | |
6223 | p.object_->name().c_str(), | |
6224 | p.locsym_); | |
6225 | } | |
6226 | ||
ec661b9d | 6227 | // Write out plt and long branch stub code. |
cf43a2fe AM |
6228 | |
6229 | template<int size, bool big_endian> | |
6230 | void | |
ec661b9d | 6231 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 6232 | { |
ec661b9d AM |
6233 | if (this->plt_call_stubs_.empty() |
6234 | && this->long_branch_stubs_.empty()) | |
6235 | return; | |
6236 | ||
6237 | const section_size_type start_off = this->offset(); | |
6238 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 6239 | const section_size_type oview_size = |
ec661b9d | 6240 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 6241 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 6242 | unsigned char* p; |
42cacb20 | 6243 | |
e4dff765 | 6244 | if (size == 64 |
7c1f4227 | 6245 | && this->targ_->power10_stubs()) |
e4dff765 | 6246 | { |
afd2ea23 AM |
6247 | const Output_data_got_powerpc<size, big_endian>* got |
6248 | = this->targ_->got_section(); | |
6249 | Address got_os_addr = got->output_section()->address(); | |
6250 | ||
e4dff765 AM |
6251 | if (!this->plt_call_stubs_.empty()) |
6252 | { | |
6253 | // Write out plt call stubs. | |
6254 | typename Plt_stub_entries::const_iterator cs; | |
6255 | for (cs = this->plt_call_stubs_.begin(); | |
6256 | cs != this->plt_call_stubs_.end(); | |
6257 | ++cs) | |
6258 | { | |
6259 | p = oview + cs->second.off_; | |
e4dff765 AM |
6260 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6261 | Address pltoff = this->plt_off(cs, &plt); | |
6262 | Address plt_addr = pltoff + plt->address(); | |
afd2ea23 AM |
6263 | if (this->targ_->power10_stubs_auto()) |
6264 | { | |
6265 | if (cs->second.notoc_) | |
6266 | { | |
6267 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6268 | this->build_tls_opt_head(&p, false); | |
6269 | Address from = this->stub_address() + (p - oview); | |
6270 | Address delta = plt_addr - from; | |
6271 | p = build_power10_offset<big_endian>(p, delta, from & 4, | |
6272 | true); | |
6273 | write_insn<big_endian>(p, mtctr_12); | |
6274 | p += 4; | |
6275 | write_insn<big_endian>(p, bctr); | |
6276 | p += 4; | |
6277 | p = oview + this->plt_call_align(p - oview); | |
6278 | } | |
6279 | if (cs->second.toc_) | |
6280 | { | |
6281 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6282 | { | |
6283 | bool save_lr | |
6284 | = cs->second.r2save_ && !cs->second.localentry0_; | |
6285 | this->build_tls_opt_head(&p, save_lr); | |
6286 | } | |
6287 | const Powerpc_relobj<size, big_endian>* ppcobj | |
6288 | = static_cast<const Powerpc_relobj<size, big_endian>*>( | |
6289 | cs->first.object_); | |
6290 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
6291 | Address off = plt_addr - got_addr; | |
6292 | ||
6293 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) | |
6294 | this->plt_error(cs->first); | |
6295 | ||
6296 | if (cs->second.r2save_) | |
6297 | { | |
6298 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6299 | p += 4; | |
6300 | } | |
6301 | if (ha(off) != 0) | |
6302 | { | |
6303 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
6304 | p += 4; | |
6305 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6306 | p += 4; | |
6307 | } | |
6308 | else | |
6309 | { | |
6310 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
6311 | p += 4; | |
6312 | } | |
6313 | write_insn<big_endian>(p, mtctr_12); | |
6314 | p += 4; | |
6315 | if (cs->second.r2save_ | |
6316 | && !cs->second.localentry0_ | |
6317 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6318 | this->build_tls_opt_tail(p); | |
6319 | else | |
6320 | write_insn<big_endian>(p, bctr); | |
6321 | } | |
6322 | } | |
6323 | else | |
6324 | { | |
6325 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6326 | { | |
6327 | bool save_lr | |
6328 | = cs->second.r2save_ && !cs->second.localentry0_; | |
6329 | this->build_tls_opt_head(&p, save_lr); | |
6330 | } | |
6331 | if (cs->second.r2save_) | |
6332 | { | |
6333 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6334 | p += 4; | |
6335 | } | |
6336 | Address from = this->stub_address() + (p - oview); | |
6337 | Address delta = plt_addr - from; | |
6338 | p = build_power10_offset<big_endian>(p, delta, from & 4, true); | |
6339 | write_insn<big_endian>(p, mtctr_12); | |
6340 | p += 4; | |
6341 | if (cs->second.r2save_ | |
6342 | && !cs->second.localentry0_ | |
6343 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6344 | this->build_tls_opt_tail(p); | |
6345 | else | |
6346 | write_insn<big_endian>(p, bctr); | |
6347 | } | |
e4dff765 AM |
6348 | } |
6349 | } | |
6350 | ||
6351 | // Write out long branch stubs. | |
6352 | typename Branch_stub_entries::const_iterator bs; | |
6353 | for (bs = this->long_branch_stubs_.begin(); | |
6354 | bs != this->long_branch_stubs_.end(); | |
6355 | ++bs) | |
6356 | { | |
6357 | if (bs->second.save_res_) | |
6358 | continue; | |
6359 | Address off = this->plt_size_ + bs->second.off_; | |
6360 | p = oview + off; | |
6361 | Address loc = this->stub_address() + off; | |
6362 | Address delta = bs->first.dest_ - loc; | |
afd2ea23 | 6363 | if (this->targ_->power10_stubs_auto()) |
e4dff765 | 6364 | { |
afd2ea23 AM |
6365 | if (bs->second.notoc_) |
6366 | { | |
6367 | unsigned char* startp = p; | |
6368 | p = build_power10_offset<big_endian>(p, delta, | |
6369 | loc & 4, false); | |
6370 | delta -= p - startp; | |
6371 | startp = p; | |
6372 | if (delta + (1 << 25) < 2 << 25) | |
6373 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6374 | else | |
6375 | { | |
6376 | write_insn<big_endian>(p, mtctr_12); | |
6377 | p += 4; | |
6378 | write_insn<big_endian>(p, bctr); | |
6379 | } | |
6380 | p += 4; | |
6381 | delta -= p - startp; | |
6382 | } | |
6383 | if (bs->second.toc_) | |
6384 | { | |
fa40fbe4 | 6385 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); |
afd2ea23 AM |
6386 | if (delta + (1 << 25) >= 2 << 25) |
6387 | { | |
6388 | Address brlt_addr | |
6389 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
6390 | gold_assert(brlt_addr != invalid_address); | |
6391 | brlt_addr += this->targ_->brlt_section()->address(); | |
6392 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
6393 | Address brltoff = brlt_addr - got_addr; | |
6394 | if (ha(brltoff) == 0) | |
6395 | { | |
6396 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)); | |
6397 | p += 4; | |
6398 | } | |
6399 | else | |
6400 | { | |
6401 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); | |
6402 | p += 4; | |
6403 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)); | |
6404 | p += 4; | |
6405 | } | |
6406 | } | |
6407 | if (delta + (1 << 25) < 2 << 25) | |
6408 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6409 | else | |
6410 | { | |
6411 | write_insn<big_endian>(p, mtctr_12); | |
6412 | p += 4; | |
6413 | write_insn<big_endian>(p, bctr); | |
6414 | } | |
6415 | } | |
e4dff765 | 6416 | } |
e4dff765 AM |
6417 | else |
6418 | { | |
fa40fbe4 AM |
6419 | if (!bs->second.notoc_) |
6420 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); | |
afd2ea23 AM |
6421 | if (bs->second.notoc_ || delta + (1 << 25) >= 2 << 25) |
6422 | { | |
6423 | unsigned char* startp = p; | |
6424 | p = build_power10_offset<big_endian>(p, delta, | |
6425 | loc & 4, false); | |
6426 | delta -= p - startp; | |
6427 | } | |
6428 | if (delta + (1 << 25) < 2 << 25) | |
6429 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6430 | else | |
6431 | { | |
6432 | write_insn<big_endian>(p, mtctr_12); | |
6433 | p += 4; | |
6434 | write_insn<big_endian>(p, bctr); | |
6435 | } | |
e4dff765 AM |
6436 | } |
6437 | } | |
6438 | } | |
6439 | else if (size == 64) | |
cf43a2fe | 6440 | { |
ec661b9d AM |
6441 | const Output_data_got_powerpc<size, big_endian>* got |
6442 | = this->targ_->got_section(); | |
dd93cd0a | 6443 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 6444 | |
32f59844 AM |
6445 | if (!this->plt_call_stubs_.empty() |
6446 | && this->targ_->abiversion() >= 2) | |
cf43a2fe | 6447 | { |
32f59844 AM |
6448 | // Write out plt call stubs for ELFv2. |
6449 | typename Plt_stub_entries::const_iterator cs; | |
6450 | for (cs = this->plt_call_stubs_.begin(); | |
6451 | cs != this->plt_call_stubs_.end(); | |
6452 | ++cs) | |
6453 | { | |
6454 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6455 | Address pltoff = this->plt_off(cs, &plt); | |
6456 | Address plt_addr = pltoff + plt->address(); | |
6457 | ||
6458 | p = oview + cs->second.off_; | |
afd2ea23 AM |
6459 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6460 | { | |
6461 | bool save_lr = cs->second.r2save_ && !cs->second.localentry0_; | |
6462 | this->build_tls_opt_head(&p, save_lr); | |
6463 | } | |
32f59844 AM |
6464 | if (cs->second.r2save_) |
6465 | { | |
6466 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6467 | p += 4; | |
6468 | } | |
6469 | if (cs->second.notoc_) | |
6470 | { | |
6471 | Address from = this->stub_address() + (p - oview) + 8; | |
6472 | Address off = plt_addr - from; | |
6473 | p = build_notoc_offset<big_endian>(p, off, true); | |
6474 | } | |
6475 | else | |
6476 | { | |
6477 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6478 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6479 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
6480 | Address off = plt_addr - got_addr; | |
6481 | ||
6482 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) | |
6483 | this->plt_error(cs->first); | |
6484 | ||
6485 | if (ha(off) != 0) | |
6486 | { | |
6487 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
6488 | p += 4; | |
6489 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6490 | p += 4; | |
6491 | } | |
6492 | else | |
6493 | { | |
6494 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
6495 | p += 4; | |
6496 | } | |
6497 | } | |
6498 | write_insn<big_endian>(p, mtctr_12); | |
6499 | p += 4; | |
afd2ea23 AM |
6500 | if (cs->second.r2save_ |
6501 | && !cs->second.localentry0_ | |
6502 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6503 | this->build_tls_opt_tail(p); | |
6504 | else | |
32f59844 AM |
6505 | write_insn<big_endian>(p, bctr); |
6506 | } | |
6507 | } | |
6508 | else if (!this->plt_call_stubs_.empty()) | |
6509 | { | |
6510 | // Write out plt call stubs for ELFv1. | |
ec661b9d AM |
6511 | typename Plt_stub_entries::const_iterator cs; |
6512 | for (cs = this->plt_call_stubs_.begin(); | |
6513 | cs != this->plt_call_stubs_.end(); | |
6514 | ++cs) | |
e5d5f5ed | 6515 | { |
08be3224 AM |
6516 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6517 | Address pltoff = this->plt_off(cs, &plt); | |
6518 | Address plt_addr = pltoff + plt->address(); | |
ec661b9d AM |
6519 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
6520 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6521 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 6522 | Address off = plt_addr - got_addr; |
ec661b9d | 6523 | |
32f59844 AM |
6524 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0 |
6525 | || cs->second.notoc_) | |
f073a3e8 | 6526 | this->plt_error(cs->first); |
ec661b9d | 6527 | |
32f59844 AM |
6528 | bool static_chain = parameters->options().plt_static_chain(); |
6529 | bool thread_safe = this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
6530 | bool use_fake_dep = false; |
6531 | Address cmp_branch_off = 0; | |
407aa07c | 6532 | if (thread_safe) |
9e69ed50 AM |
6533 | { |
6534 | unsigned int pltindex | |
6535 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
6536 | / this->targ_->plt_entry_size()); | |
6537 | Address glinkoff | |
9e390558 | 6538 | = (this->targ_->glink_section()->pltresolve_size() |
9e69ed50 AM |
6539 | + pltindex * 8); |
6540 | if (pltindex > 32768) | |
6541 | glinkoff += (pltindex - 32768) * 4; | |
6542 | Address to | |
6543 | = this->targ_->glink_section()->address() + glinkoff; | |
6544 | Address from | |
7e57d19e AM |
6545 | = (this->stub_address() + cs->second.off_ + 20 |
6546 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
6547 | + 4 * (ha(off) != 0) |
6548 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
6549 | + 4 * static_chain); | |
6550 | cmp_branch_off = to - from; | |
6551 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
6552 | } | |
6553 | ||
bdab445c | 6554 | p = oview + cs->second.off_; |
afd2ea23 AM |
6555 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6556 | { | |
6557 | bool save_lr = cs->second.r2save_ && !cs->second.localentry0_; | |
6558 | this->build_tls_opt_head(&p, save_lr); | |
6559 | use_fake_dep = thread_safe; | |
6560 | } | |
32f59844 | 6561 | if (cs->second.r2save_) |
34e0882b | 6562 | { |
32f59844 | 6563 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
34e0882b | 6564 | p += 4; |
34e0882b | 6565 | } |
9e69ed50 | 6566 | if (ha(off) != 0) |
ec661b9d | 6567 | { |
32f59844 AM |
6568 | write_insn<big_endian>(p, addis_11_2 + ha(off)); |
6569 | p += 4; | |
6570 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
6571 | p += 4; | |
6572 | if (ha(off + 8 + 8 * static_chain) != ha(off)) | |
397998fc | 6573 | { |
32f59844 | 6574 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
397998fc | 6575 | p += 4; |
32f59844 | 6576 | off = 0; |
397998fc | 6577 | } |
32f59844 AM |
6578 | write_insn<big_endian>(p, mtctr_12); |
6579 | p += 4; | |
6580 | if (use_fake_dep) | |
397998fc | 6581 | { |
32f59844 | 6582 | write_insn<big_endian>(p, xor_2_12_12); |
397998fc | 6583 | p += 4; |
32f59844 | 6584 | write_insn<big_endian>(p, add_11_11_2); |
397998fc AM |
6585 | p += 4; |
6586 | } | |
32f59844 | 6587 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); |
b4f7960d | 6588 | p += 4; |
32f59844 | 6589 | if (static_chain) |
9e69ed50 | 6590 | { |
32f59844 | 6591 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); |
b4f7960d | 6592 | p += 4; |
9e69ed50 | 6593 | } |
ec661b9d AM |
6594 | } |
6595 | else | |
6596 | { | |
b4f7960d AM |
6597 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
6598 | p += 4; | |
32f59844 | 6599 | if (ha(off + 8 + 8 * static_chain) != ha(off)) |
ec661b9d | 6600 | { |
b4f7960d AM |
6601 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
6602 | p += 4; | |
9e69ed50 | 6603 | off = 0; |
ec661b9d | 6604 | } |
b4f7960d AM |
6605 | write_insn<big_endian>(p, mtctr_12); |
6606 | p += 4; | |
32f59844 | 6607 | if (use_fake_dep) |
9e69ed50 | 6608 | { |
32f59844 AM |
6609 | write_insn<big_endian>(p, xor_11_12_12); |
6610 | p += 4; | |
6611 | write_insn<big_endian>(p, add_2_2_11); | |
b4f7960d | 6612 | p += 4; |
9e69ed50 | 6613 | } |
32f59844 AM |
6614 | if (static_chain) |
6615 | { | |
6616 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
6617 | p += 4; | |
6618 | } | |
6619 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
34e0882b | 6620 | p += 4; |
34e0882b | 6621 | } |
afd2ea23 AM |
6622 | if (cs->second.r2save_ |
6623 | && !cs->second.localentry0_ | |
6624 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6625 | this->build_tls_opt_tail(p); | |
34e0882b | 6626 | else if (thread_safe && !use_fake_dep) |
9e69ed50 | 6627 | { |
b4f7960d AM |
6628 | write_insn<big_endian>(p, cmpldi_2_0); |
6629 | p += 4; | |
6630 | write_insn<big_endian>(p, bnectr_p4); | |
6631 | p += 4; | |
9e69ed50 AM |
6632 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
6633 | } | |
6634 | else | |
407aa07c | 6635 | write_insn<big_endian>(p, bctr); |
e5d5f5ed | 6636 | } |
ec661b9d AM |
6637 | } |
6638 | ||
6639 | // Write out long branch stubs. | |
6640 | typename Branch_stub_entries::const_iterator bs; | |
6641 | for (bs = this->long_branch_stubs_.begin(); | |
6642 | bs != this->long_branch_stubs_.end(); | |
6643 | ++bs) | |
6644 | { | |
32f59844 | 6645 | if (bs->second.save_res_) |
d49044c7 | 6646 | continue; |
32f59844 AM |
6647 | Address off = this->plt_size_ + bs->second.off_; |
6648 | p = oview + off; | |
6649 | Address loc = this->stub_address() + off; | |
ec661b9d | 6650 | Address delta = bs->first.dest_ - loc; |
fa40fbe4 AM |
6651 | if (!bs->second.notoc_) |
6652 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); | |
32f59844 AM |
6653 | if (bs->second.notoc_) |
6654 | { | |
6655 | unsigned char* startp = p; | |
6656 | p = build_notoc_offset<big_endian>(p, off, false); | |
6657 | delta -= p - startp; | |
6658 | } | |
6659 | else if (delta + (1 << 25) >= 2 << 25) | |
cf43a2fe | 6660 | { |
ec661b9d AM |
6661 | Address brlt_addr |
6662 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
6663 | gold_assert(brlt_addr != invalid_address); | |
6664 | brlt_addr += this->targ_->brlt_section()->address(); | |
6665 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
6666 | Address brltoff = brlt_addr - got_addr; | |
6667 | if (ha(brltoff) == 0) | |
6668 | { | |
32f59844 AM |
6669 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)); |
6670 | p += 4; | |
ec661b9d AM |
6671 | } |
6672 | else | |
cf43a2fe | 6673 | { |
32f59844 AM |
6674 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); |
6675 | p += 4; | |
6676 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)); | |
6677 | p += 4; | |
cf43a2fe | 6678 | } |
32f59844 AM |
6679 | } |
6680 | if (delta + (1 << 25) < 2 << 25) | |
6681 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6682 | else | |
6683 | { | |
6684 | write_insn<big_endian>(p, mtctr_12); | |
6685 | p += 4; | |
407aa07c | 6686 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6687 | } |
ec661b9d AM |
6688 | } |
6689 | } | |
32f59844 | 6690 | else // size == 32 |
ec661b9d AM |
6691 | { |
6692 | if (!this->plt_call_stubs_.empty()) | |
6693 | { | |
ec661b9d AM |
6694 | // The address of _GLOBAL_OFFSET_TABLE_. |
6695 | Address g_o_t = invalid_address; | |
6696 | ||
6697 | // Write out plt call stubs. | |
6698 | typename Plt_stub_entries::const_iterator cs; | |
6699 | for (cs = this->plt_call_stubs_.begin(); | |
6700 | cs != this->plt_call_stubs_.end(); | |
6701 | ++cs) | |
cf43a2fe | 6702 | { |
08be3224 AM |
6703 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6704 | Address plt_addr = this->plt_off(cs, &plt); | |
6705 | plt_addr += plt->address(); | |
ec661b9d | 6706 | |
bdab445c | 6707 | p = oview + cs->second.off_; |
afd2ea23 AM |
6708 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6709 | this->build_tls_opt_head(&p, false); | |
ec661b9d AM |
6710 | if (parameters->options().output_is_position_independent()) |
6711 | { | |
6712 | Address got_addr; | |
6713 | const Powerpc_relobj<size, big_endian>* ppcobj | |
6714 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
6715 | (cs->first.object_)); | |
6716 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
6717 | { | |
6718 | unsigned int got2 = ppcobj->got2_shndx(); | |
6719 | got_addr = ppcobj->get_output_section_offset(got2); | |
6720 | gold_assert(got_addr != invalid_address); | |
6721 | got_addr += (ppcobj->output_section(got2)->address() | |
6722 | + cs->first.addend_); | |
6723 | } | |
6724 | else | |
6725 | { | |
6726 | if (g_o_t == invalid_address) | |
6727 | { | |
6728 | const Output_data_got_powerpc<size, big_endian>* got | |
6729 | = this->targ_->got_section(); | |
6730 | g_o_t = got->address() + got->g_o_t(); | |
6731 | } | |
6732 | got_addr = g_o_t; | |
6733 | } | |
6734 | ||
9e69ed50 AM |
6735 | Address off = plt_addr - got_addr; |
6736 | if (ha(off) == 0) | |
9e390558 | 6737 | write_insn<big_endian>(p, lwz_11_30 + l(off)); |
ec661b9d AM |
6738 | else |
6739 | { | |
9e390558 AM |
6740 | write_insn<big_endian>(p, addis_11_30 + ha(off)); |
6741 | p += 4; | |
6742 | write_insn<big_endian>(p, lwz_11_11 + l(off)); | |
ec661b9d AM |
6743 | } |
6744 | } | |
6745 | else | |
6746 | { | |
9e390558 AM |
6747 | write_insn<big_endian>(p, lis_11 + ha(plt_addr)); |
6748 | p += 4; | |
6749 | write_insn<big_endian>(p, lwz_11_11 + l(plt_addr)); | |
ec661b9d | 6750 | } |
9e390558 AM |
6751 | p += 4; |
6752 | write_insn<big_endian>(p, mtctr_11); | |
6753 | p += 4; | |
407aa07c | 6754 | write_insn<big_endian>(p, bctr); |
ec661b9d AM |
6755 | } |
6756 | } | |
6757 | ||
6758 | // Write out long branch stubs. | |
6759 | typename Branch_stub_entries::const_iterator bs; | |
6760 | for (bs = this->long_branch_stubs_.begin(); | |
6761 | bs != this->long_branch_stubs_.end(); | |
6762 | ++bs) | |
6763 | { | |
32f59844 | 6764 | if (bs->second.save_res_) |
d49044c7 | 6765 | continue; |
32f59844 AM |
6766 | Address off = this->plt_size_ + bs->second.off_; |
6767 | p = oview + off; | |
6768 | Address loc = this->stub_address() + off; | |
ec661b9d AM |
6769 | Address delta = bs->first.dest_ - loc; |
6770 | if (delta + (1 << 25) < 2 << 25) | |
6771 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6772 | else if (!parameters->options().output_is_position_independent()) | |
6773 | { | |
9e390558 AM |
6774 | write_insn<big_endian>(p, lis_12 + ha(bs->first.dest_)); |
6775 | p += 4; | |
6776 | write_insn<big_endian>(p, addi_12_12 + l(bs->first.dest_)); | |
ec661b9d AM |
6777 | } |
6778 | else | |
6779 | { | |
6780 | delta -= 8; | |
9e390558 AM |
6781 | write_insn<big_endian>(p, mflr_0); |
6782 | p += 4; | |
6783 | write_insn<big_endian>(p, bcl_20_31); | |
6784 | p += 4; | |
6785 | write_insn<big_endian>(p, mflr_12); | |
6786 | p += 4; | |
6787 | write_insn<big_endian>(p, addis_12_12 + ha(delta)); | |
6788 | p += 4; | |
6789 | write_insn<big_endian>(p, addi_12_12 + l(delta)); | |
6790 | p += 4; | |
6791 | write_insn<big_endian>(p, mtlr_0); | |
cf43a2fe | 6792 | } |
9e390558 AM |
6793 | p += 4; |
6794 | write_insn<big_endian>(p, mtctr_12); | |
6795 | p += 4; | |
407aa07c | 6796 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6797 | } |
ec661b9d | 6798 | } |
d49044c7 AM |
6799 | if (this->need_save_res_) |
6800 | { | |
6801 | p = oview + this->plt_size_ + this->branch_size_; | |
6802 | memcpy (p, this->targ_->savres_section()->contents(), | |
6803 | this->targ_->savres_section()->data_size()); | |
6804 | } | |
ec661b9d AM |
6805 | } |
6806 | ||
6807 | // Write out .glink. | |
6808 | ||
6809 | template<int size, bool big_endian> | |
6810 | void | |
6811 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
6812 | { | |
6813 | const section_size_type off = this->offset(); | |
6814 | const section_size_type oview_size = | |
6815 | convert_to_section_size_type(this->data_size()); | |
6816 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
6817 | unsigned char* p; | |
6818 | ||
6819 | // The base address of the .plt section. | |
6820 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
6821 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 6822 | |
ec661b9d AM |
6823 | if (size == 64) |
6824 | { | |
9055360d | 6825 | if (this->end_branch_table_ != 0) |
b4f7960d | 6826 | { |
9055360d AM |
6827 | // Write pltresolve stub. |
6828 | p = oview; | |
6829 | Address after_bcl = this->address() + 16; | |
6830 | Address pltoff = plt_base - after_bcl; | |
6831 | ||
6832 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 6833 | |
b4f7960d | 6834 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 6835 | { |
9055360d AM |
6836 | write_insn<big_endian>(p, mflr_12), p += 4; |
6837 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6838 | write_insn<big_endian>(p, mflr_11), p += 4; | |
6839 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
6840 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
6841 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
6842 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
6843 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
6844 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6845 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
6846 | } | |
6847 | else | |
6848 | { | |
63e5eea2 AM |
6849 | if (this->targ_->has_localentry0()) |
6850 | { | |
6851 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; | |
6852 | } | |
9055360d AM |
6853 | write_insn<big_endian>(p, mflr_0), p += 4; |
6854 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6855 | write_insn<big_endian>(p, mflr_11), p += 4; | |
9055360d | 6856 | write_insn<big_endian>(p, mtlr_0), p += 4; |
63e5eea2 AM |
6857 | if (this->targ_->has_localentry0()) |
6858 | { | |
6859 | write_insn<big_endian>(p, ld_0_11 + l(-20)), p += 4; | |
6860 | } | |
6861 | else | |
6862 | { | |
6863 | write_insn<big_endian>(p, ld_0_11 + l(-16)), p += 4; | |
6864 | } | |
9055360d | 6865 | write_insn<big_endian>(p, sub_12_12_11), p += 4; |
63e5eea2 AM |
6866 | write_insn<big_endian>(p, add_11_0_11), p += 4; |
6867 | write_insn<big_endian>(p, addi_0_12 + l(-44)), p += 4; | |
9055360d AM |
6868 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; |
6869 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
6870 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6871 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
6872 | } | |
407aa07c | 6873 | write_insn<big_endian>(p, bctr), p += 4; |
9e390558 | 6874 | gold_assert(p == oview + this->pltresolve_size()); |
9055360d AM |
6875 | |
6876 | // Write lazy link call stubs. | |
6877 | uint32_t indx = 0; | |
6878 | while (p < oview + this->end_branch_table_) | |
6879 | { | |
6880 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 6881 | { |
9055360d AM |
6882 | if (indx < 0x8000) |
6883 | { | |
6884 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
6885 | } | |
6886 | else | |
6887 | { | |
bbec1a5d | 6888 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
6889 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
6890 | } | |
b4f7960d | 6891 | } |
9055360d AM |
6892 | uint32_t branch_off = 8 - (p - oview); |
6893 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
6894 | indx++; | |
cf43a2fe | 6895 | } |
9055360d AM |
6896 | } |
6897 | ||
6898 | Address plt_base = this->targ_->plt_section()->address(); | |
6899 | Address iplt_base = invalid_address; | |
9e390558 | 6900 | unsigned int global_entry_off = this->global_entry_off(); |
9055360d AM |
6901 | Address global_entry_base = this->address() + global_entry_off; |
6902 | typename Global_entry_stub_entries::const_iterator ge; | |
6903 | for (ge = this->global_entry_stubs_.begin(); | |
6904 | ge != this->global_entry_stubs_.end(); | |
6905 | ++ge) | |
6906 | { | |
6907 | p = oview + global_entry_off + ge->second; | |
6908 | Address plt_addr = ge->first->plt_offset(); | |
6909 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
6910 | && ge->first->can_use_relative_reloc(false)) | |
6911 | { | |
6912 | if (iplt_base == invalid_address) | |
6913 | iplt_base = this->targ_->iplt_section()->address(); | |
6914 | plt_addr += iplt_base; | |
6915 | } | |
6916 | else | |
6917 | plt_addr += plt_base; | |
6918 | Address my_addr = global_entry_base + ge->second; | |
6919 | Address off = plt_addr - my_addr; | |
6920 | ||
6921 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
f073a3e8 | 6922 | gold_error(_("linkage table error against `%s'"), |
9055360d AM |
6923 | ge->first->demangled_name().c_str()); |
6924 | ||
6925 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
6926 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
6927 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
407aa07c | 6928 | write_insn<big_endian>(p, bctr); |
cf43a2fe AM |
6929 | } |
6930 | } | |
6931 | else | |
6932 | { | |
ec661b9d AM |
6933 | const Output_data_got_powerpc<size, big_endian>* got |
6934 | = this->targ_->got_section(); | |
dd93cd0a AM |
6935 | // The address of _GLOBAL_OFFSET_TABLE_. |
6936 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 6937 | |
cf43a2fe | 6938 | // Write out pltresolve branch table. |
ec661b9d | 6939 | p = oview; |
9e390558 | 6940 | unsigned int the_end = oview_size - this->pltresolve_size(); |
c9269dff | 6941 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
6942 | while (p < end_p - 8 * 4) |
6943 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
6944 | while (p < end_p) | |
6945 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 6946 | |
cf43a2fe | 6947 | // Write out pltresolve call stub. |
9e390558 | 6948 | end_p = oview + oview_size; |
cf43a2fe | 6949 | if (parameters->options().output_is_position_independent()) |
42cacb20 | 6950 | { |
ec661b9d | 6951 | Address res0_off = 0; |
dd93cd0a AM |
6952 | Address after_bcl_off = the_end + 12; |
6953 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe | 6954 | |
9e390558 AM |
6955 | write_insn<big_endian>(p, addis_11_11 + ha(bcl_res0)); |
6956 | p += 4; | |
6957 | write_insn<big_endian>(p, mflr_0); | |
6958 | p += 4; | |
6959 | write_insn<big_endian>(p, bcl_20_31); | |
6960 | p += 4; | |
6961 | write_insn<big_endian>(p, addi_11_11 + l(bcl_res0)); | |
6962 | p += 4; | |
6963 | write_insn<big_endian>(p, mflr_12); | |
6964 | p += 4; | |
6965 | write_insn<big_endian>(p, mtlr_0); | |
6966 | p += 4; | |
6967 | write_insn<big_endian>(p, sub_11_11_12); | |
6968 | p += 4; | |
cf43a2fe | 6969 | |
dd93cd0a | 6970 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe | 6971 | |
9e390558 AM |
6972 | write_insn<big_endian>(p, addis_12_12 + ha(got_bcl)); |
6973 | p += 4; | |
cf43a2fe AM |
6974 | if (ha(got_bcl) == ha(got_bcl + 4)) |
6975 | { | |
9e390558 AM |
6976 | write_insn<big_endian>(p, lwz_0_12 + l(got_bcl)); |
6977 | p += 4; | |
6978 | write_insn<big_endian>(p, lwz_12_12 + l(got_bcl + 4)); | |
cf43a2fe AM |
6979 | } |
6980 | else | |
6981 | { | |
9e390558 AM |
6982 | write_insn<big_endian>(p, lwzu_0_12 + l(got_bcl)); |
6983 | p += 4; | |
6984 | write_insn<big_endian>(p, lwz_12_12 + 4); | |
cf43a2fe | 6985 | } |
9e390558 AM |
6986 | p += 4; |
6987 | write_insn<big_endian>(p, mtctr_0); | |
6988 | p += 4; | |
6989 | write_insn<big_endian>(p, add_0_11_11); | |
6990 | p += 4; | |
6991 | write_insn<big_endian>(p, add_11_0_11); | |
42cacb20 | 6992 | } |
cf43a2fe | 6993 | else |
42cacb20 | 6994 | { |
ec661b9d | 6995 | Address res0 = this->address(); |
cf43a2fe | 6996 | |
9e390558 AM |
6997 | write_insn<big_endian>(p, lis_12 + ha(g_o_t + 4)); |
6998 | p += 4; | |
6999 | write_insn<big_endian>(p, addis_11_11 + ha(-res0)); | |
7000 | p += 4; | |
cf43a2fe | 7001 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 7002 | write_insn<big_endian>(p, lwz_0_12 + l(g_o_t + 4)); |
cf43a2fe | 7003 | else |
9e390558 AM |
7004 | write_insn<big_endian>(p, lwzu_0_12 + l(g_o_t + 4)); |
7005 | p += 4; | |
7006 | write_insn<big_endian>(p, addi_11_11 + l(-res0)); | |
7007 | p += 4; | |
7008 | write_insn<big_endian>(p, mtctr_0); | |
7009 | p += 4; | |
7010 | write_insn<big_endian>(p, add_0_11_11); | |
7011 | p += 4; | |
cf43a2fe | 7012 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 7013 | write_insn<big_endian>(p, lwz_12_12 + l(g_o_t + 8)); |
cf43a2fe | 7014 | else |
9e390558 AM |
7015 | write_insn<big_endian>(p, lwz_12_12 + 4); |
7016 | p += 4; | |
7017 | write_insn<big_endian>(p, add_11_0_11); | |
7018 | } | |
7019 | p += 4; | |
407aa07c AM |
7020 | write_insn<big_endian>(p, bctr); |
7021 | p += 4; | |
9e390558 AM |
7022 | while (p < end_p) |
7023 | { | |
7024 | write_insn<big_endian>(p, nop); | |
7025 | p += 4; | |
42cacb20 DE |
7026 | } |
7027 | } | |
7028 | ||
cf43a2fe AM |
7029 | of->write_output_view(off, oview_size, oview); |
7030 | } | |
7031 | ||
f3a0ed29 AM |
7032 | |
7033 | // A class to handle linker generated save/restore functions. | |
7034 | ||
7035 | template<int size, bool big_endian> | |
7036 | class Output_data_save_res : public Output_section_data_build | |
7037 | { | |
7038 | public: | |
7039 | Output_data_save_res(Symbol_table* symtab); | |
7040 | ||
d49044c7 AM |
7041 | const unsigned char* |
7042 | contents() const | |
7043 | { | |
7044 | return contents_; | |
7045 | } | |
7046 | ||
f3a0ed29 AM |
7047 | protected: |
7048 | // Write to a map file. | |
7049 | void | |
7050 | do_print_to_mapfile(Mapfile* mapfile) const | |
7051 | { mapfile->print_output_data(this, _("** save/restore")); } | |
7052 | ||
7053 | void | |
7054 | do_write(Output_file*); | |
7055 | ||
7056 | private: | |
7057 | // The maximum size of save/restore contents. | |
7058 | static const unsigned int savres_max = 218*4; | |
7059 | ||
7060 | void | |
7061 | savres_define(Symbol_table* symtab, | |
7062 | const char *name, | |
7063 | unsigned int lo, unsigned int hi, | |
7064 | unsigned char* write_ent(unsigned char*, int), | |
7065 | unsigned char* write_tail(unsigned char*, int)); | |
7066 | ||
7067 | unsigned char *contents_; | |
7068 | }; | |
7069 | ||
7070 | template<bool big_endian> | |
7071 | static unsigned char* | |
7072 | savegpr0(unsigned char* p, int r) | |
7073 | { | |
7074 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7075 | write_insn<big_endian>(p, insn); | |
7076 | return p + 4; | |
7077 | } | |
7078 | ||
7079 | template<bool big_endian> | |
7080 | static unsigned char* | |
7081 | savegpr0_tail(unsigned char* p, int r) | |
7082 | { | |
7083 | p = savegpr0<big_endian>(p, r); | |
7084 | uint32_t insn = std_0_1 + 16; | |
7085 | write_insn<big_endian>(p, insn); | |
7086 | p = p + 4; | |
7087 | write_insn<big_endian>(p, blr); | |
7088 | return p + 4; | |
7089 | } | |
7090 | ||
7091 | template<bool big_endian> | |
62fe925a | 7092 | static unsigned char* |
f3a0ed29 AM |
7093 | restgpr0(unsigned char* p, int r) |
7094 | { | |
7095 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7096 | write_insn<big_endian>(p, insn); | |
7097 | return p + 4; | |
7098 | } | |
7099 | ||
7100 | template<bool big_endian> | |
62fe925a | 7101 | static unsigned char* |
f3a0ed29 AM |
7102 | restgpr0_tail(unsigned char* p, int r) |
7103 | { | |
7104 | uint32_t insn = ld_0_1 + 16; | |
7105 | write_insn<big_endian>(p, insn); | |
7106 | p = p + 4; | |
7107 | p = restgpr0<big_endian>(p, r); | |
7108 | write_insn<big_endian>(p, mtlr_0); | |
7109 | p = p + 4; | |
7110 | if (r == 29) | |
7111 | { | |
7112 | p = restgpr0<big_endian>(p, 30); | |
7113 | p = restgpr0<big_endian>(p, 31); | |
7114 | } | |
7115 | write_insn<big_endian>(p, blr); | |
7116 | return p + 4; | |
7117 | } | |
7118 | ||
7119 | template<bool big_endian> | |
62fe925a | 7120 | static unsigned char* |
f3a0ed29 AM |
7121 | savegpr1(unsigned char* p, int r) |
7122 | { | |
7123 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7124 | write_insn<big_endian>(p, insn); | |
7125 | return p + 4; | |
7126 | } | |
7127 | ||
7128 | template<bool big_endian> | |
62fe925a | 7129 | static unsigned char* |
f3a0ed29 AM |
7130 | savegpr1_tail(unsigned char* p, int r) |
7131 | { | |
7132 | p = savegpr1<big_endian>(p, r); | |
7133 | write_insn<big_endian>(p, blr); | |
7134 | return p + 4; | |
7135 | } | |
7136 | ||
7137 | template<bool big_endian> | |
62fe925a | 7138 | static unsigned char* |
f3a0ed29 AM |
7139 | restgpr1(unsigned char* p, int r) |
7140 | { | |
7141 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7142 | write_insn<big_endian>(p, insn); | |
7143 | return p + 4; | |
7144 | } | |
7145 | ||
7146 | template<bool big_endian> | |
62fe925a | 7147 | static unsigned char* |
f3a0ed29 AM |
7148 | restgpr1_tail(unsigned char* p, int r) |
7149 | { | |
7150 | p = restgpr1<big_endian>(p, r); | |
7151 | write_insn<big_endian>(p, blr); | |
7152 | return p + 4; | |
7153 | } | |
7154 | ||
7155 | template<bool big_endian> | |
62fe925a | 7156 | static unsigned char* |
f3a0ed29 AM |
7157 | savefpr(unsigned char* p, int r) |
7158 | { | |
7159 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7160 | write_insn<big_endian>(p, insn); | |
7161 | return p + 4; | |
7162 | } | |
7163 | ||
7164 | template<bool big_endian> | |
62fe925a | 7165 | static unsigned char* |
f3a0ed29 AM |
7166 | savefpr0_tail(unsigned char* p, int r) |
7167 | { | |
7168 | p = savefpr<big_endian>(p, r); | |
7169 | write_insn<big_endian>(p, std_0_1 + 16); | |
7170 | p = p + 4; | |
7171 | write_insn<big_endian>(p, blr); | |
7172 | return p + 4; | |
7173 | } | |
7174 | ||
7175 | template<bool big_endian> | |
62fe925a | 7176 | static unsigned char* |
f3a0ed29 AM |
7177 | restfpr(unsigned char* p, int r) |
7178 | { | |
7179 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7180 | write_insn<big_endian>(p, insn); | |
7181 | return p + 4; | |
7182 | } | |
7183 | ||
7184 | template<bool big_endian> | |
62fe925a | 7185 | static unsigned char* |
f3a0ed29 AM |
7186 | restfpr0_tail(unsigned char* p, int r) |
7187 | { | |
7188 | write_insn<big_endian>(p, ld_0_1 + 16); | |
7189 | p = p + 4; | |
7190 | p = restfpr<big_endian>(p, r); | |
7191 | write_insn<big_endian>(p, mtlr_0); | |
7192 | p = p + 4; | |
7193 | if (r == 29) | |
7194 | { | |
7195 | p = restfpr<big_endian>(p, 30); | |
7196 | p = restfpr<big_endian>(p, 31); | |
7197 | } | |
7198 | write_insn<big_endian>(p, blr); | |
7199 | return p + 4; | |
7200 | } | |
7201 | ||
7202 | template<bool big_endian> | |
62fe925a | 7203 | static unsigned char* |
f3a0ed29 AM |
7204 | savefpr1_tail(unsigned char* p, int r) |
7205 | { | |
7206 | p = savefpr<big_endian>(p, r); | |
7207 | write_insn<big_endian>(p, blr); | |
7208 | return p + 4; | |
7209 | } | |
7210 | ||
7211 | template<bool big_endian> | |
62fe925a | 7212 | static unsigned char* |
f3a0ed29 AM |
7213 | restfpr1_tail(unsigned char* p, int r) |
7214 | { | |
7215 | p = restfpr<big_endian>(p, r); | |
7216 | write_insn<big_endian>(p, blr); | |
7217 | return p + 4; | |
7218 | } | |
7219 | ||
7220 | template<bool big_endian> | |
62fe925a | 7221 | static unsigned char* |
f3a0ed29 AM |
7222 | savevr(unsigned char* p, int r) |
7223 | { | |
7224 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
7225 | write_insn<big_endian>(p, insn); | |
7226 | p = p + 4; | |
7227 | insn = stvx_0_12_0 + (r << 21); | |
7228 | write_insn<big_endian>(p, insn); | |
7229 | return p + 4; | |
7230 | } | |
7231 | ||
7232 | template<bool big_endian> | |
62fe925a | 7233 | static unsigned char* |
f3a0ed29 AM |
7234 | savevr_tail(unsigned char* p, int r) |
7235 | { | |
7236 | p = savevr<big_endian>(p, r); | |
7237 | write_insn<big_endian>(p, blr); | |
7238 | return p + 4; | |
7239 | } | |
7240 | ||
7241 | template<bool big_endian> | |
62fe925a | 7242 | static unsigned char* |
f3a0ed29 AM |
7243 | restvr(unsigned char* p, int r) |
7244 | { | |
7245 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
7246 | write_insn<big_endian>(p, insn); | |
7247 | p = p + 4; | |
7248 | insn = lvx_0_12_0 + (r << 21); | |
7249 | write_insn<big_endian>(p, insn); | |
7250 | return p + 4; | |
7251 | } | |
7252 | ||
7253 | template<bool big_endian> | |
62fe925a | 7254 | static unsigned char* |
f3a0ed29 AM |
7255 | restvr_tail(unsigned char* p, int r) |
7256 | { | |
7257 | p = restvr<big_endian>(p, r); | |
7258 | write_insn<big_endian>(p, blr); | |
7259 | return p + 4; | |
7260 | } | |
7261 | ||
7262 | ||
7263 | template<int size, bool big_endian> | |
7264 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
7265 | Symbol_table* symtab) | |
7266 | : Output_section_data_build(4), | |
7267 | contents_(NULL) | |
7268 | { | |
7269 | this->savres_define(symtab, | |
7270 | "_savegpr0_", 14, 31, | |
7271 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
7272 | this->savres_define(symtab, | |
7273 | "_restgpr0_", 14, 29, | |
7274 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
7275 | this->savres_define(symtab, | |
7276 | "_restgpr0_", 30, 31, | |
7277 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
7278 | this->savres_define(symtab, | |
7279 | "_savegpr1_", 14, 31, | |
7280 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
7281 | this->savres_define(symtab, | |
7282 | "_restgpr1_", 14, 31, | |
7283 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
7284 | this->savres_define(symtab, | |
7285 | "_savefpr_", 14, 31, | |
7286 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
7287 | this->savres_define(symtab, | |
7288 | "_restfpr_", 14, 29, | |
7289 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
7290 | this->savres_define(symtab, | |
7291 | "_restfpr_", 30, 31, | |
7292 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
7293 | this->savres_define(symtab, | |
7294 | "._savef", 14, 31, | |
7295 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
7296 | this->savres_define(symtab, | |
7297 | "._restf", 14, 31, | |
7298 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
7299 | this->savres_define(symtab, | |
7300 | "_savevr_", 20, 31, | |
7301 | savevr<big_endian>, savevr_tail<big_endian>); | |
7302 | this->savres_define(symtab, | |
7303 | "_restvr_", 20, 31, | |
7304 | restvr<big_endian>, restvr_tail<big_endian>); | |
7305 | } | |
7306 | ||
7307 | template<int size, bool big_endian> | |
7308 | void | |
7309 | Output_data_save_res<size, big_endian>::savres_define( | |
7310 | Symbol_table* symtab, | |
7311 | const char *name, | |
7312 | unsigned int lo, unsigned int hi, | |
7313 | unsigned char* write_ent(unsigned char*, int), | |
7314 | unsigned char* write_tail(unsigned char*, int)) | |
7315 | { | |
7316 | size_t len = strlen(name); | |
7317 | bool writing = false; | |
7318 | char sym[16]; | |
7319 | ||
7320 | memcpy(sym, name, len); | |
7321 | sym[len + 2] = 0; | |
7322 | ||
7323 | for (unsigned int i = lo; i <= hi; i++) | |
7324 | { | |
7325 | sym[len + 0] = i / 10 + '0'; | |
7326 | sym[len + 1] = i % 10 + '0'; | |
7327 | Symbol* gsym = symtab->lookup(sym); | |
7328 | bool refd = gsym != NULL && gsym->is_undefined(); | |
7329 | writing = writing || refd; | |
7330 | if (writing) | |
7331 | { | |
7332 | if (this->contents_ == NULL) | |
7333 | this->contents_ = new unsigned char[this->savres_max]; | |
7334 | ||
ec661b9d | 7335 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
7336 | unsigned char* p = this->contents_ + value; |
7337 | if (i != hi) | |
7338 | p = write_ent(p, i); | |
7339 | else | |
7340 | p = write_tail(p, i); | |
ec661b9d | 7341 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
7342 | this->set_current_data_size(cur_size); |
7343 | if (refd) | |
7344 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
7345 | this, value, cur_size - value, | |
7346 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
7347 | elfcpp::STV_HIDDEN, 0, false, false); | |
7348 | } | |
7349 | } | |
7350 | } | |
7351 | ||
7352 | // Write out save/restore. | |
7353 | ||
7354 | template<int size, bool big_endian> | |
7355 | void | |
7356 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
7357 | { | |
ec661b9d | 7358 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
7359 | const section_size_type oview_size = |
7360 | convert_to_section_size_type(this->data_size()); | |
7361 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
7362 | memcpy(oview, this->contents_, oview_size); | |
7363 | of->write_output_view(off, oview_size, oview); | |
7364 | } | |
7365 | ||
7366 | ||
cf43a2fe | 7367 | // Create the glink section. |
42cacb20 | 7368 | |
cf43a2fe AM |
7369 | template<int size, bool big_endian> |
7370 | void | |
7371 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
7372 | { | |
7373 | if (this->glink_ == NULL) | |
7374 | { | |
7375 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 7376 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
7377 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
7378 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
7379 | this->glink_, ORDER_TEXT, false); | |
7380 | } | |
42cacb20 DE |
7381 | } |
7382 | ||
7383 | // Create a PLT entry for a global symbol. | |
7384 | ||
7385 | template<int size, bool big_endian> | |
7386 | void | |
ec661b9d AM |
7387 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
7388 | Layout* layout, | |
7389 | Symbol* gsym) | |
42cacb20 | 7390 | { |
e5d5f5ed AM |
7391 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
7392 | && gsym->can_use_relative_reloc(false)) | |
7393 | { | |
7394 | if (this->iplt_ == NULL) | |
40b469d7 | 7395 | this->make_iplt_section(symtab, layout); |
03e25981 | 7396 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
7397 | } |
7398 | else | |
7399 | { | |
7400 | if (this->plt_ == NULL) | |
40b469d7 | 7401 | this->make_plt_section(symtab, layout); |
03e25981 | 7402 | this->plt_->add_entry(gsym); |
e5d5f5ed | 7403 | } |
e5d5f5ed | 7404 | } |
42cacb20 | 7405 | |
2d7ad24e AM |
7406 | // Make a PLT entry for a local symbol. |
7407 | ||
7408 | template<int size, bool big_endian> | |
7409 | void | |
7410 | Target_powerpc<size, big_endian>::make_local_plt_entry( | |
7411 | Layout* layout, | |
7412 | Sized_relobj_file<size, big_endian>* relobj, | |
7413 | unsigned int r_sym) | |
7414 | { | |
7415 | if (this->lplt_ == NULL) | |
7416 | this->make_lplt_section(layout); | |
7417 | this->lplt_->add_local_entry(relobj, r_sym); | |
7418 | } | |
7419 | ||
e5d5f5ed | 7420 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 7421 | |
e5d5f5ed AM |
7422 | template<int size, bool big_endian> |
7423 | void | |
7424 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 7425 | Symbol_table* symtab, |
e5d5f5ed | 7426 | Layout* layout, |
ec661b9d AM |
7427 | Sized_relobj_file<size, big_endian>* relobj, |
7428 | unsigned int r_sym) | |
e5d5f5ed AM |
7429 | { |
7430 | if (this->iplt_ == NULL) | |
40b469d7 | 7431 | this->make_iplt_section(symtab, layout); |
03e25981 | 7432 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
7433 | } |
7434 | ||
0e70b911 CC |
7435 | // Return the number of entries in the PLT. |
7436 | ||
7437 | template<int size, bool big_endian> | |
7438 | unsigned int | |
7439 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
7440 | { | |
7441 | if (this->plt_ == NULL) | |
7442 | return 0; | |
b3ccdeb5 | 7443 | return this->plt_->entry_count(); |
0e70b911 CC |
7444 | } |
7445 | ||
dd93cd0a | 7446 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
7447 | |
7448 | template<int size, bool big_endian> | |
7449 | unsigned int | |
dd93cd0a | 7450 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
7451 | Symbol_table* symtab, |
7452 | Layout* layout, | |
7453 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 7454 | { |
dd93cd0a | 7455 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
7456 | { |
7457 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
7458 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
7459 | Output_data_got_powerpc<size, big_endian>* got |
7460 | = this->got_section(symtab, layout); | |
7461 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
7462 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
7463 | got_offset, 0); | |
dd93cd0a | 7464 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 7465 | } |
dd93cd0a | 7466 | return this->tlsld_got_offset_; |
42cacb20 DE |
7467 | } |
7468 | ||
95a2c8d6 RS |
7469 | // Get the Reference_flags for a particular relocation. |
7470 | ||
7471 | template<int size, bool big_endian> | |
7472 | int | |
88b8e639 AM |
7473 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
7474 | unsigned int r_type, | |
7475 | const Target_powerpc* target) | |
95a2c8d6 | 7476 | { |
88b8e639 AM |
7477 | int ref = 0; |
7478 | ||
95a2c8d6 RS |
7479 | switch (r_type) |
7480 | { | |
7481 | case elfcpp::R_POWERPC_NONE: | |
7482 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7483 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7484 | case elfcpp::R_PPC64_TOC: | |
7485 | // No symbol reference. | |
88b8e639 | 7486 | break; |
95a2c8d6 | 7487 | |
dd93cd0a AM |
7488 | case elfcpp::R_PPC64_ADDR64: |
7489 | case elfcpp::R_PPC64_UADDR64: | |
7490 | case elfcpp::R_POWERPC_ADDR32: | |
7491 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 7492 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 7493 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
7494 | case elfcpp::R_POWERPC_ADDR16_LO: |
7495 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7496 | case elfcpp::R_POWERPC_ADDR16_HA: | |
89c52ae3 AM |
7497 | case elfcpp::R_PPC64_ADDR16_HIGHER34: |
7498 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
7499 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
7500 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
7501 | case elfcpp::R_PPC64_D34: | |
7502 | case elfcpp::R_PPC64_D34_LO: | |
7503 | case elfcpp::R_PPC64_D34_HI30: | |
7504 | case elfcpp::R_PPC64_D34_HA30: | |
7505 | case elfcpp::R_PPC64_D28: | |
88b8e639 AM |
7506 | ref = Symbol::ABSOLUTE_REF; |
7507 | break; | |
95a2c8d6 | 7508 | |
dd93cd0a AM |
7509 | case elfcpp::R_POWERPC_ADDR24: |
7510 | case elfcpp::R_POWERPC_ADDR14: | |
7511 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7512 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
7513 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
7514 | break; | |
dd93cd0a | 7515 | |
e5d5f5ed | 7516 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 7517 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 7518 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
7519 | case elfcpp::R_POWERPC_REL16: |
7520 | case elfcpp::R_POWERPC_REL16_LO: | |
7521 | case elfcpp::R_POWERPC_REL16_HI: | |
7522 | case elfcpp::R_POWERPC_REL16_HA: | |
c432bbba AM |
7523 | case elfcpp::R_PPC64_REL16_HIGH: |
7524 | case elfcpp::R_PPC64_REL16_HIGHA: | |
7525 | case elfcpp::R_PPC64_REL16_HIGHER: | |
7526 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
7527 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
7528 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
e4dff765 AM |
7529 | case elfcpp::R_PPC64_PCREL34: |
7530 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7531 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7532 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7533 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
7534 | case elfcpp::R_PPC64_PCREL28: | |
88b8e639 AM |
7535 | ref = Symbol::RELATIVE_REF; |
7536 | break; | |
95a2c8d6 | 7537 | |
32f59844 AM |
7538 | case elfcpp::R_PPC64_REL24_NOTOC: |
7539 | if (size == 32) | |
7540 | break; | |
7541 | // Fall through. | |
dd93cd0a | 7542 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 7543 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
7544 | case elfcpp::R_POWERPC_REL14: |
7545 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7546 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
7547 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
7548 | break; | |
95a2c8d6 RS |
7549 | |
7550 | case elfcpp::R_POWERPC_GOT16: | |
7551 | case elfcpp::R_POWERPC_GOT16_LO: | |
7552 | case elfcpp::R_POWERPC_GOT16_HI: | |
7553 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
7554 | case elfcpp::R_PPC64_GOT16_DS: |
7555 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7556 | case elfcpp::R_PPC64_GOT_PCREL34: |
95a2c8d6 RS |
7557 | case elfcpp::R_PPC64_TOC16: |
7558 | case elfcpp::R_PPC64_TOC16_LO: | |
7559 | case elfcpp::R_PPC64_TOC16_HI: | |
7560 | case elfcpp::R_PPC64_TOC16_HA: | |
7561 | case elfcpp::R_PPC64_TOC16_DS: | |
7562 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
08be3224 AM |
7563 | case elfcpp::R_POWERPC_PLT16_LO: |
7564 | case elfcpp::R_POWERPC_PLT16_HI: | |
7565 | case elfcpp::R_POWERPC_PLT16_HA: | |
7566 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
e4dff765 AM |
7567 | case elfcpp::R_PPC64_PLT_PCREL34: |
7568 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
32d849b3 | 7569 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 7570 | break; |
95a2c8d6 RS |
7571 | |
7572 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7573 | case elfcpp::R_POWERPC_TLS: | |
89c52ae3 AM |
7574 | case elfcpp::R_PPC64_TLSGD: |
7575 | case elfcpp::R_PPC64_TLSLD: | |
7576 | case elfcpp::R_PPC64_TPREL34: | |
7577 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
7578 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
7579 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
7580 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
7581 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
88b8e639 AM |
7582 | ref = Symbol::TLS_REF; |
7583 | break; | |
95a2c8d6 RS |
7584 | |
7585 | case elfcpp::R_POWERPC_COPY: | |
7586 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7587 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7588 | case elfcpp::R_POWERPC_RELATIVE: | |
7589 | case elfcpp::R_POWERPC_DTPMOD: | |
7590 | default: | |
7591 | // Not expected. We will give an error later. | |
88b8e639 | 7592 | break; |
95a2c8d6 | 7593 | } |
88b8e639 AM |
7594 | |
7595 | if (size == 64 && target->abiversion() < 2) | |
7596 | ref |= Symbol::FUNC_DESC_ABI; | |
7597 | return ref; | |
95a2c8d6 RS |
7598 | } |
7599 | ||
42cacb20 DE |
7600 | // Report an unsupported relocation against a local symbol. |
7601 | ||
7602 | template<int size, bool big_endian> | |
7603 | void | |
7604 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
7605 | Sized_relobj_file<size, big_endian>* object, |
7606 | unsigned int r_type) | |
42cacb20 DE |
7607 | { |
7608 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
7609 | object->name().c_str(), r_type); | |
7610 | } | |
7611 | ||
7612 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
7613 | // dynamic linker does not support it, issue an error. | |
7614 | ||
7615 | template<int size, bool big_endian> | |
7616 | void | |
7617 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
7618 | unsigned int r_type) | |
7619 | { | |
7620 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
7621 | ||
7622 | // These are the relocation types supported by glibc for both 32-bit | |
7623 | // and 64-bit powerpc. | |
7624 | switch (r_type) | |
7625 | { | |
3ea0a085 | 7626 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
7627 | case elfcpp::R_POWERPC_RELATIVE: |
7628 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7629 | case elfcpp::R_POWERPC_DTPMOD: | |
7630 | case elfcpp::R_POWERPC_DTPREL: | |
7631 | case elfcpp::R_POWERPC_TPREL: | |
7632 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7633 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 7634 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 7635 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 7636 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 7637 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
7638 | case elfcpp::R_POWERPC_ADDR16: |
7639 | case elfcpp::R_POWERPC_UADDR16: | |
7640 | case elfcpp::R_POWERPC_ADDR16_LO: | |
7641 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7642 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7643 | case elfcpp::R_POWERPC_ADDR14: | |
7644 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7645 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7646 | case elfcpp::R_POWERPC_REL32: | |
3ea0a085 AM |
7647 | case elfcpp::R_POWERPC_TPREL16: |
7648 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7649 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7650 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
7651 | return; |
7652 | ||
7653 | default: | |
7654 | break; | |
7655 | } | |
7656 | ||
7657 | if (size == 64) | |
7658 | { | |
7659 | switch (r_type) | |
7660 | { | |
7661 | // These are the relocation types supported only on 64-bit. | |
7662 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 7663 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 7664 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 7665 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 7666 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
7667 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7668 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
7669 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7670 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7671 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7672 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 7673 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
7674 | case elfcpp::R_POWERPC_ADDR30: |
7675 | case elfcpp::R_PPC64_TPREL16_DS: | |
7676 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7677 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7678 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
7679 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
7680 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7681 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7682 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
7683 | return; |
7684 | ||
7685 | default: | |
7686 | break; | |
7687 | } | |
7688 | } | |
7689 | else | |
7690 | { | |
7691 | switch (r_type) | |
7692 | { | |
7693 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 | 7694 | // ??? glibc ld.so doesn't need to support these. |
e59a1001 | 7695 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
7696 | case elfcpp::R_POWERPC_DTPREL16: |
7697 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7698 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7699 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7700 | return; | |
42cacb20 DE |
7701 | |
7702 | default: | |
7703 | break; | |
7704 | } | |
7705 | } | |
7706 | ||
7707 | // This prevents us from issuing more than one error per reloc | |
7708 | // section. But we can still wind up issuing more than one | |
7709 | // error per object file. | |
7710 | if (this->issued_non_pic_error_) | |
7711 | return; | |
33aea2fd | 7712 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
7713 | object->error(_("requires unsupported dynamic reloc; " |
7714 | "recompile with -fPIC")); | |
7715 | this->issued_non_pic_error_ = true; | |
7716 | return; | |
7717 | } | |
7718 | ||
e5d5f5ed AM |
7719 | // Return whether we need to make a PLT entry for a relocation of the |
7720 | // given type against a STT_GNU_IFUNC symbol. | |
7721 | ||
7722 | template<int size, bool big_endian> | |
7723 | bool | |
7724 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 7725 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 7726 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
7727 | unsigned int r_type, |
7728 | bool report_err) | |
e5d5f5ed | 7729 | { |
c9824451 AM |
7730 | // In non-pic code any reference will resolve to the plt call stub |
7731 | // for the ifunc symbol. | |
9055360d AM |
7732 | if ((size == 32 || target->abiversion() >= 2) |
7733 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
7734 | return true; |
7735 | ||
e5d5f5ed AM |
7736 | switch (r_type) |
7737 | { | |
b3ccdeb5 | 7738 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
7739 | case elfcpp::R_POWERPC_ADDR32: |
7740 | case elfcpp::R_POWERPC_UADDR32: | |
7741 | if (size == 32) | |
b3ccdeb5 | 7742 | return false; |
e5d5f5ed AM |
7743 | break; |
7744 | ||
7745 | case elfcpp::R_PPC64_ADDR64: | |
7746 | case elfcpp::R_PPC64_UADDR64: | |
7747 | if (size == 64) | |
b3ccdeb5 | 7748 | return false; |
e5d5f5ed AM |
7749 | break; |
7750 | ||
b3ccdeb5 | 7751 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
7752 | case elfcpp::R_POWERPC_GOT16: |
7753 | case elfcpp::R_POWERPC_GOT16_LO: | |
7754 | case elfcpp::R_POWERPC_GOT16_HI: | |
7755 | case elfcpp::R_POWERPC_GOT16_HA: | |
7756 | case elfcpp::R_PPC64_GOT16_DS: | |
7757 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7758 | case elfcpp::R_PPC64_GOT_PCREL34: |
b3ccdeb5 | 7759 | return false; |
e5d5f5ed | 7760 | |
08be3224 AM |
7761 | // PLT relocs are OK and need a PLT entry. |
7762 | case elfcpp::R_POWERPC_PLT16_LO: | |
7763 | case elfcpp::R_POWERPC_PLT16_HI: | |
7764 | case elfcpp::R_POWERPC_PLT16_HA: | |
7765 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
23cedd1d AM |
7766 | case elfcpp::R_POWERPC_PLTSEQ: |
7767 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7768 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7769 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7770 | case elfcpp::R_PPC64_PLT_PCREL34: |
7771 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
08be3224 AM |
7772 | return true; |
7773 | break; | |
7774 | ||
b3ccdeb5 | 7775 | // Function calls are good, and these do need a PLT entry. |
32f59844 AM |
7776 | case elfcpp::R_PPC64_REL24_NOTOC: |
7777 | if (size == 32) | |
7778 | break; | |
7779 | // Fall through. | |
e5d5f5ed AM |
7780 | case elfcpp::R_POWERPC_ADDR24: |
7781 | case elfcpp::R_POWERPC_ADDR14: | |
7782 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7783 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7784 | case elfcpp::R_POWERPC_REL24: | |
7785 | case elfcpp::R_PPC_PLTREL24: | |
7786 | case elfcpp::R_POWERPC_REL14: | |
7787 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7788 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7789 | return true; | |
7790 | ||
7791 | default: | |
7792 | break; | |
7793 | } | |
7794 | ||
7795 | // Anything else is a problem. | |
7796 | // If we are building a static executable, the libc startup function | |
7797 | // responsible for applying indirect function relocations is going | |
7798 | // to complain about the reloc type. | |
7799 | // If we are building a dynamic executable, we will have a text | |
7800 | // relocation. The dynamic loader will set the text segment | |
7801 | // writable and non-executable to apply text relocations. So we'll | |
7802 | // segfault when trying to run the indirection function to resolve | |
7803 | // the reloc. | |
b3ccdeb5 AM |
7804 | if (report_err) |
7805 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
7806 | object->name().c_str(), r_type); |
7807 | return false; | |
7808 | } | |
7809 | ||
5edad15d AM |
7810 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
7811 | // reloc. | |
7812 | ||
7813 | static bool | |
7814 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
7815 | { | |
7816 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
7817 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7818 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7819 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7820 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7821 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7822 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7823 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7824 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7825 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7826 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7827 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7828 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7829 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7830 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7831 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
7832 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
7833 | /* Exclude lfqu by testing reloc. If relocs are ever | |
7834 | defined for the reduced D field in psq_lu then those | |
7835 | will need testing too. */ | |
7836 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7837 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7838 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
7839 | && (insn & 1) == 0) | |
7840 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
7841 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
7842 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
7843 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7844 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7845 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
7846 | && (insn & 1) == 0)); | |
7847 | } | |
7848 | ||
42cacb20 DE |
7849 | // Scan a relocation for a local symbol. |
7850 | ||
7851 | template<int size, bool big_endian> | |
7852 | inline void | |
7853 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
7854 | Symbol_table* symtab, |
7855 | Layout* layout, | |
7856 | Target_powerpc<size, big_endian>* target, | |
7857 | Sized_relobj_file<size, big_endian>* object, | |
7858 | unsigned int data_shndx, | |
7859 | Output_section* output_section, | |
7860 | const elfcpp::Rela<size, big_endian>& reloc, | |
7861 | unsigned int r_type, | |
e5d5f5ed | 7862 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 7863 | bool is_discarded) |
42cacb20 | 7864 | { |
34e0882b | 7865 | this->maybe_skip_tls_get_addr_call(target, r_type, NULL); |
e3deeb9c AM |
7866 | |
7867 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7868 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7869 | { | |
7870 | this->expect_tls_get_addr_call(); | |
7871 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
7872 | if (tls_type != tls::TLSOPT_NONE) | |
7873 | this->skip_next_tls_get_addr_call(); | |
7874 | } | |
7875 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7876 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7877 | { | |
7878 | this->expect_tls_get_addr_call(); | |
7879 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7880 | if (tls_type != tls::TLSOPT_NONE) | |
7881 | this->skip_next_tls_get_addr_call(); | |
7882 | } | |
7883 | ||
dd93cd0a AM |
7884 | Powerpc_relobj<size, big_endian>* ppc_object |
7885 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7886 | ||
bfdfa4cd AM |
7887 | if (is_discarded) |
7888 | { | |
7889 | if (size == 64 | |
7890 | && data_shndx == ppc_object->opd_shndx() | |
7891 | && r_type == elfcpp::R_PPC64_ADDR64) | |
7892 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
7893 | return; | |
7894 | } | |
7895 | ||
e5d5f5ed AM |
7896 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
7897 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 7898 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 7899 | { |
ec661b9d AM |
7900 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
7901 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7902 | r_type, r_sym, reloc.get_r_addend()); | |
7903 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 7904 | } |
e5d5f5ed | 7905 | |
42cacb20 DE |
7906 | switch (r_type) |
7907 | { | |
7908 | case elfcpp::R_POWERPC_NONE: | |
7909 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7910 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 7911 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 7912 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
7913 | case elfcpp::R_POWERPC_PLTSEQ: |
7914 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7915 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7916 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7917 | case elfcpp::R_PPC64_PCREL_OPT: |
7918 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
7919 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
7920 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
7921 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
7922 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7923 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7924 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7925 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
e4dff765 AM |
7926 | case elfcpp::R_PPC64_D34: |
7927 | case elfcpp::R_PPC64_D34_LO: | |
7928 | case elfcpp::R_PPC64_D34_HI30: | |
7929 | case elfcpp::R_PPC64_D34_HA30: | |
7930 | case elfcpp::R_PPC64_D28: | |
7931 | case elfcpp::R_PPC64_PCREL34: | |
7932 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
7933 | case elfcpp::R_PPC64_TPREL34: |
7934 | case elfcpp::R_PPC64_DTPREL34: | |
dd93cd0a AM |
7935 | break; |
7936 | ||
7937 | case elfcpp::R_PPC64_TOC: | |
7938 | { | |
7939 | Output_data_got_powerpc<size, big_endian>* got | |
7940 | = target->got_section(symtab, layout); | |
7941 | if (parameters->options().output_is_position_independent()) | |
7942 | { | |
bfdfa4cd AM |
7943 | Address off = reloc.get_r_offset(); |
7944 | if (size == 64 | |
9055360d | 7945 | && target->abiversion() < 2 |
bfdfa4cd AM |
7946 | && data_shndx == ppc_object->opd_shndx() |
7947 | && ppc_object->get_opd_discard(off - 8)) | |
7948 | break; | |
7949 | ||
dd93cd0a | 7950 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 7951 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
7952 | rela_dyn->add_output_section_relative(got->output_section(), |
7953 | elfcpp::R_POWERPC_RELATIVE, | |
7954 | output_section, | |
bfdfa4cd AM |
7955 | object, data_shndx, off, |
7956 | symobj->toc_base_offset()); | |
dd93cd0a AM |
7957 | } |
7958 | } | |
42cacb20 DE |
7959 | break; |
7960 | ||
7961 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 7962 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 7963 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
7964 | case elfcpp::R_POWERPC_UADDR32: |
7965 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 7966 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 7967 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
7968 | case elfcpp::R_POWERPC_ADDR16_HI: |
7969 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 7970 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
7971 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7972 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
7973 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7974 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7975 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7976 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7977 | case elfcpp::R_PPC64_ADDR16_DS: | |
7978 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
7979 | case elfcpp::R_POWERPC_ADDR14: | |
7980 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7981 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
7982 | // If building a shared library (or a position-independent |
7983 | // executable), we need to create a dynamic relocation for | |
7984 | // this location. | |
c9824451 | 7985 | if (parameters->options().output_is_position_independent() |
9055360d | 7986 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 7987 | { |
b3ccdeb5 AM |
7988 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
7989 | is_ifunc); | |
1f98a074 | 7990 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
7991 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
7992 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 7993 | { |
b3ccdeb5 AM |
7994 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
7995 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 7996 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
7997 | output_section, data_shndx, |
7998 | reloc.get_r_offset(), | |
c9824451 | 7999 | reloc.get_r_addend(), false); |
2e702c99 | 8000 | } |
1f98a074 | 8001 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 8002 | { |
dd93cd0a | 8003 | check_non_pic(object, r_type); |
dd93cd0a AM |
8004 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
8005 | data_shndx, reloc.get_r_offset(), | |
8006 | reloc.get_r_addend()); | |
2e702c99 | 8007 | } |
1f98a074 AM |
8008 | else |
8009 | { | |
8010 | gold_assert(lsym.get_st_value() == 0); | |
8011 | unsigned int shndx = lsym.get_st_shndx(); | |
8012 | bool is_ordinary; | |
8013 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
8014 | &is_ordinary); | |
8015 | if (!is_ordinary) | |
8016 | object->error(_("section symbol %u has bad shndx %u"), | |
8017 | r_sym, shndx); | |
8018 | else | |
8019 | rela_dyn->add_local_section(object, shndx, r_type, | |
8020 | output_section, data_shndx, | |
8021 | reloc.get_r_offset()); | |
8022 | } | |
2e702c99 | 8023 | } |
42cacb20 DE |
8024 | break; |
8025 | ||
e4dff765 AM |
8026 | case elfcpp::R_PPC64_PLT_PCREL34: |
8027 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
2d7ad24e AM |
8028 | case elfcpp::R_POWERPC_PLT16_LO: |
8029 | case elfcpp::R_POWERPC_PLT16_HI: | |
8030 | case elfcpp::R_POWERPC_PLT16_HA: | |
8031 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8032 | if (!is_ifunc) | |
8033 | { | |
8034 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8035 | target->make_local_plt_entry(layout, object, r_sym); | |
8036 | } | |
8037 | break; | |
8038 | ||
32f59844 AM |
8039 | case elfcpp::R_PPC64_REL24_NOTOC: |
8040 | if (size == 32) | |
8041 | break; | |
8042 | // Fall through. | |
42cacb20 | 8043 | case elfcpp::R_POWERPC_REL24: |
c9824451 | 8044 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 8045 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
8046 | case elfcpp::R_POWERPC_REL14: |
8047 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8048 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 8049 | if (!is_ifunc) |
0e123f69 AM |
8050 | { |
8051 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8052 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
8053 | r_type, r_sym, reloc.get_r_addend()); | |
8054 | } | |
ec661b9d AM |
8055 | break; |
8056 | ||
7e57d19e AM |
8057 | case elfcpp::R_PPC64_TOCSAVE: |
8058 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
8059 | // caller has already saved r2 and thus a plt call stub need not | |
8060 | // save r2. | |
8061 | if (size == 64 | |
8062 | && target->mark_pltcall(ppc_object, data_shndx, | |
8063 | reloc.get_r_offset() - 4, symtab)) | |
8064 | { | |
8065 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8066 | unsigned int shndx = lsym.get_st_shndx(); | |
8067 | bool is_ordinary; | |
8068 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8069 | if (!is_ordinary) | |
8070 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
8071 | r_sym, shndx); | |
8072 | else | |
8073 | target->add_tocsave(ppc_object, shndx, | |
8074 | lsym.get_st_value() + reloc.get_r_addend()); | |
8075 | } | |
8076 | break; | |
8077 | ||
ec661b9d AM |
8078 | case elfcpp::R_PPC64_REL64: |
8079 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 8080 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 8081 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 8082 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 8083 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 8084 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
8085 | case elfcpp::R_PPC64_REL16_HIGH: |
8086 | case elfcpp::R_PPC64_REL16_HIGHA: | |
8087 | case elfcpp::R_PPC64_REL16_HIGHER: | |
8088 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
8089 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
8090 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 8091 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 8092 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 8093 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 8094 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
8095 | case elfcpp::R_PPC64_SECTOFF_DS: |
8096 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8097 | case elfcpp::R_POWERPC_TPREL16: | |
8098 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8099 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 8100 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
8101 | case elfcpp::R_PPC64_TPREL16_DS: |
8102 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8103 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8104 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8105 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 8106 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 8107 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 8108 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
8109 | case elfcpp::R_POWERPC_DTPREL16: |
8110 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8111 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8112 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
8113 | case elfcpp::R_PPC64_DTPREL16_DS: |
8114 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
8115 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8116 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8117 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8118 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8119 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8120 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
8121 | case elfcpp::R_PPC64_TLSGD: |
8122 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 8123 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
8124 | break; |
8125 | ||
e4dff765 | 8126 | case elfcpp::R_PPC64_GOT_PCREL34: |
42cacb20 DE |
8127 | case elfcpp::R_POWERPC_GOT16: |
8128 | case elfcpp::R_POWERPC_GOT16_LO: | |
8129 | case elfcpp::R_POWERPC_GOT16_HI: | |
8130 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
8131 | case elfcpp::R_PPC64_GOT16_DS: |
8132 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 8133 | { |
c9269dff | 8134 | // The symbol requires a GOT entry. |
dd93cd0a AM |
8135 | Output_data_got_powerpc<size, big_endian>* got |
8136 | = target->got_section(symtab, layout); | |
8137 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 8138 | |
e5d5f5ed | 8139 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 8140 | { |
b01a4b04 AM |
8141 | if (is_ifunc |
8142 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
8143 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
8144 | else | |
8145 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
8146 | } | |
8147 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
8148 | { | |
8149 | // If we are generating a shared object or a pie, this | |
8150 | // symbol's GOT entry will be set by a dynamic relocation. | |
8151 | unsigned int off; | |
8152 | off = got->add_constant(0); | |
8153 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 8154 | |
b3ccdeb5 AM |
8155 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
8156 | is_ifunc); | |
8157 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
8158 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 8159 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 8160 | got, off, 0, false); |
2e702c99 | 8161 | } |
42cacb20 DE |
8162 | } |
8163 | break; | |
8164 | ||
cf43a2fe AM |
8165 | case elfcpp::R_PPC64_TOC16: |
8166 | case elfcpp::R_PPC64_TOC16_LO: | |
8167 | case elfcpp::R_PPC64_TOC16_HI: | |
8168 | case elfcpp::R_PPC64_TOC16_HA: | |
8169 | case elfcpp::R_PPC64_TOC16_DS: | |
8170 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
8171 | // We need a GOT section. |
8172 | target->got_section(symtab, layout); | |
8173 | break; | |
8174 | ||
87c69f97 | 8175 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
dd93cd0a AM |
8176 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
8177 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8178 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8179 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8180 | { | |
8181 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
8182 | if (tls_type == tls::TLSOPT_NONE) | |
8183 | { | |
8184 | Output_data_got_powerpc<size, big_endian>* got | |
8185 | = target->got_section(symtab, layout); | |
8186 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
8187 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8188 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
8189 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
8190 | } |
8191 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8192 | { | |
8193 | // no GOT relocs needed for Local Exec. | |
8194 | } | |
8195 | else | |
8196 | gold_unreachable(); | |
8197 | } | |
42cacb20 DE |
8198 | break; |
8199 | ||
87c69f97 | 8200 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: |
dd93cd0a AM |
8201 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
8202 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8203 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8204 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8205 | { | |
8206 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8207 | if (tls_type == tls::TLSOPT_NONE) | |
8208 | target->tlsld_got_offset(symtab, layout, object); | |
8209 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8210 | { | |
8211 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
8212 | if (parameters->options().emit_relocs()) |
8213 | { | |
8214 | Output_section* os = layout->tls_segment()->first_section(); | |
8215 | gold_assert(os != NULL); | |
8216 | os->set_needs_symtab_index(); | |
8217 | } | |
dd93cd0a AM |
8218 | } |
8219 | else | |
8220 | gold_unreachable(); | |
8221 | } | |
42cacb20 | 8222 | break; |
42cacb20 | 8223 | |
87c69f97 | 8224 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: |
dd93cd0a AM |
8225 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
8226 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8227 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8228 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8229 | { | |
8230 | Output_data_got_powerpc<size, big_endian>* got | |
8231 | = target->got_section(symtab, layout); | |
8232 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 8233 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
8234 | } |
8235 | break; | |
42cacb20 | 8236 | |
87c69f97 | 8237 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: |
dd93cd0a AM |
8238 | case elfcpp::R_POWERPC_GOT_TPREL16: |
8239 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8240 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8241 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8242 | { | |
8243 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
8244 | if (tls_type == tls::TLSOPT_NONE) | |
8245 | { | |
dd93cd0a | 8246 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
8247 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
8248 | { | |
8249 | Output_data_got_powerpc<size, big_endian>* got | |
8250 | = target->got_section(symtab, layout); | |
8251 | unsigned int off = got->add_constant(0); | |
8252 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
8253 | ||
8254 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8255 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
8256 | elfcpp::R_POWERPC_TPREL, | |
8257 | got, off, 0); | |
8258 | } | |
dd93cd0a AM |
8259 | } |
8260 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8261 | { | |
8262 | // no GOT relocs needed for Local Exec. | |
8263 | } | |
8264 | else | |
8265 | gold_unreachable(); | |
8266 | } | |
8267 | break; | |
8268 | ||
8269 | default: | |
8270 | unsupported_reloc_local(object, r_type); | |
8271 | break; | |
8272 | } | |
d8f5a274 | 8273 | |
5edad15d AM |
8274 | if (size == 64 |
8275 | && parameters->options().toc_optimize()) | |
8276 | { | |
8277 | if (data_shndx == ppc_object->toc_shndx()) | |
8278 | { | |
8279 | bool ok = true; | |
8280 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
8281 | || (is_ifunc && target->abiversion() < 2)) | |
8282 | ok = false; | |
8283 | else if (parameters->options().output_is_position_independent()) | |
8284 | { | |
8285 | if (is_ifunc) | |
8286 | ok = false; | |
8287 | else | |
8288 | { | |
8289 | unsigned int shndx = lsym.get_st_shndx(); | |
8290 | if (shndx >= elfcpp::SHN_LORESERVE | |
8291 | && shndx != elfcpp::SHN_XINDEX) | |
8292 | ok = false; | |
8293 | } | |
8294 | } | |
8295 | if (!ok) | |
8296 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
8297 | } | |
8298 | ||
8299 | enum {no_check, check_lo, check_ha} insn_check; | |
8300 | switch (r_type) | |
8301 | { | |
8302 | default: | |
8303 | insn_check = no_check; | |
8304 | break; | |
8305 | ||
8306 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8307 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8308 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8309 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8310 | case elfcpp::R_POWERPC_GOT16_HA: | |
8311 | case elfcpp::R_PPC64_TOC16_HA: | |
8312 | insn_check = check_ha; | |
8313 | break; | |
8314 | ||
8315 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8316 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8317 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8318 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8319 | case elfcpp::R_POWERPC_GOT16_LO: | |
8320 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8321 | case elfcpp::R_PPC64_TOC16_LO: | |
8322 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8323 | insn_check = check_lo; | |
8324 | break; | |
8325 | } | |
8326 | ||
8327 | section_size_type slen; | |
8328 | const unsigned char* view = NULL; | |
8329 | if (insn_check != no_check) | |
8330 | { | |
8331 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8332 | section_size_type off = | |
8333 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8334 | if (off < slen) | |
8335 | { | |
8336 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8337 | if (insn_check == check_lo | |
8338 | ? !ok_lo_toc_insn(insn, r_type) | |
8339 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8340 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8341 | { | |
8342 | ppc_object->set_no_toc_opt(); | |
8343 | gold_warning(_("%s: toc optimization is not supported " | |
8344 | "for %#08x instruction"), | |
8345 | ppc_object->name().c_str(), insn); | |
8346 | } | |
8347 | } | |
8348 | } | |
8349 | ||
8350 | switch (r_type) | |
8351 | { | |
8352 | default: | |
8353 | break; | |
8354 | case elfcpp::R_PPC64_TOC16: | |
8355 | case elfcpp::R_PPC64_TOC16_LO: | |
8356 | case elfcpp::R_PPC64_TOC16_HI: | |
8357 | case elfcpp::R_PPC64_TOC16_HA: | |
8358 | case elfcpp::R_PPC64_TOC16_DS: | |
8359 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8360 | unsigned int shndx = lsym.get_st_shndx(); | |
8361 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8362 | bool is_ordinary; | |
8363 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8364 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
8365 | { | |
412294da | 8366 | Address dst_off = lsym.get_st_value() + reloc.get_r_addend(); |
5edad15d AM |
8367 | if (dst_off < ppc_object->section_size(shndx)) |
8368 | { | |
8369 | bool ok = false; | |
8370 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
8371 | ok = true; | |
8372 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
8373 | { | |
8374 | // Need to check that the insn is a ld | |
8375 | if (!view) | |
8376 | view = ppc_object->section_contents(data_shndx, | |
8377 | &slen, | |
8378 | false); | |
8379 | section_size_type off = | |
8380 | (convert_to_section_size_type(reloc.get_r_offset()) | |
8381 | + (big_endian ? -2 : 3)); | |
8382 | if (off < slen | |
8383 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
8384 | ok = true; | |
8385 | } | |
8386 | if (!ok) | |
8387 | ppc_object->set_no_toc_opt(dst_off); | |
8388 | } | |
8389 | } | |
8390 | break; | |
8391 | } | |
8392 | } | |
8393 | ||
f159cdb6 AM |
8394 | if (size == 32) |
8395 | { | |
8396 | switch (r_type) | |
8397 | { | |
8398 | case elfcpp::R_POWERPC_REL32: | |
8399 | if (ppc_object->got2_shndx() != 0 | |
8400 | && parameters->options().output_is_position_independent()) | |
8401 | { | |
8402 | unsigned int shndx = lsym.get_st_shndx(); | |
8403 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8404 | bool is_ordinary; | |
8405 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8406 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
8407 | && (ppc_object->section_flags(data_shndx) | |
8408 | & elfcpp::SHF_EXECINSTR) != 0) | |
8409 | gold_error(_("%s: unsupported -mbss-plt code"), | |
8410 | ppc_object->name().c_str()); | |
8411 | } | |
8412 | break; | |
8413 | default: | |
8414 | break; | |
8415 | } | |
8416 | } | |
8417 | ||
d8f5a274 AM |
8418 | switch (r_type) |
8419 | { | |
8420 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
8421 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8422 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8423 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8424 | case elfcpp::R_POWERPC_GOT16: | |
8425 | case elfcpp::R_PPC64_GOT16_DS: | |
8426 | case elfcpp::R_PPC64_TOC16: | |
8427 | case elfcpp::R_PPC64_TOC16_DS: | |
8428 | ppc_object->set_has_small_toc_reloc(); | |
89c52ae3 AM |
8429 | break; |
8430 | default: | |
8431 | break; | |
8432 | } | |
8433 | ||
8434 | switch (r_type) | |
8435 | { | |
89c52ae3 AM |
8436 | case elfcpp::R_PPC64_TPREL16_DS: |
8437 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8438 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8439 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8440 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8441 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8442 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8443 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8444 | case elfcpp::R_PPC64_TPREL34: | |
252dcdf4 AM |
8445 | if (size != 64) |
8446 | break; | |
8447 | // Fall through. | |
8448 | case elfcpp::R_POWERPC_TPREL16: | |
8449 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8450 | case elfcpp::R_POWERPC_TPREL16_HI: | |
8451 | case elfcpp::R_POWERPC_TPREL16_HA: | |
89c52ae3 AM |
8452 | layout->set_has_static_tls(); |
8453 | break; | |
8454 | default: | |
8455 | break; | |
8456 | } | |
8457 | ||
252dcdf4 AM |
8458 | switch (r_type) |
8459 | { | |
8460 | case elfcpp::R_POWERPC_TPREL16_HA: | |
8461 | if (target->tprel_opt()) | |
8462 | { | |
8463 | section_size_type slen; | |
8464 | const unsigned char* view = NULL; | |
8465 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8466 | section_size_type off | |
8467 | = convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8468 | if (off < slen) | |
8469 | { | |
8470 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8471 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8472 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
4e0e019f | 8473 | target->set_no_tprel_opt(); |
252dcdf4 AM |
8474 | } |
8475 | } | |
8476 | break; | |
8477 | ||
8478 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8479 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8480 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8481 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8482 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8483 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8484 | if (size != 64) | |
8485 | break; | |
8486 | // Fall through. | |
8487 | case elfcpp::R_POWERPC_TPREL16_HI: | |
4e0e019f | 8488 | target->set_no_tprel_opt(); |
252dcdf4 AM |
8489 | break; |
8490 | default: | |
8491 | break; | |
8492 | } | |
8493 | ||
89c52ae3 AM |
8494 | switch (r_type) |
8495 | { | |
8496 | case elfcpp::R_PPC64_D34: | |
8497 | case elfcpp::R_PPC64_D34_LO: | |
8498 | case elfcpp::R_PPC64_D34_HI30: | |
8499 | case elfcpp::R_PPC64_D34_HA30: | |
8500 | case elfcpp::R_PPC64_D28: | |
8501 | case elfcpp::R_PPC64_PCREL34: | |
8502 | case elfcpp::R_PPC64_PCREL28: | |
8503 | case elfcpp::R_PPC64_TPREL34: | |
8504 | case elfcpp::R_PPC64_DTPREL34: | |
8505 | case elfcpp::R_PPC64_PLT_PCREL34: | |
8506 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
8507 | case elfcpp::R_PPC64_GOT_PCREL34: | |
87c69f97 AM |
8508 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
8509 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
8510 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
8511 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
63e5eea2 | 8512 | target->set_power10_relocs(); |
89c52ae3 | 8513 | break; |
d8f5a274 AM |
8514 | default: |
8515 | break; | |
8516 | } | |
dd93cd0a AM |
8517 | } |
8518 | ||
8519 | // Report an unsupported relocation against a global symbol. | |
8520 | ||
8521 | template<int size, bool big_endian> | |
8522 | void | |
8523 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
8524 | Sized_relobj_file<size, big_endian>* object, | |
8525 | unsigned int r_type, | |
8526 | Symbol* gsym) | |
8527 | { | |
42cacb20 DE |
8528 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
8529 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
8530 | } | |
8531 | ||
8532 | // Scan a relocation for a global symbol. | |
8533 | ||
8534 | template<int size, bool big_endian> | |
8535 | inline void | |
8536 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
8537 | Symbol_table* symtab, |
8538 | Layout* layout, | |
8539 | Target_powerpc<size, big_endian>* target, | |
8540 | Sized_relobj_file<size, big_endian>* object, | |
8541 | unsigned int data_shndx, | |
8542 | Output_section* output_section, | |
8543 | const elfcpp::Rela<size, big_endian>& reloc, | |
8544 | unsigned int r_type, | |
8545 | Symbol* gsym) | |
42cacb20 | 8546 | { |
34e0882b AM |
8547 | if (this->maybe_skip_tls_get_addr_call(target, r_type, gsym) |
8548 | == Track_tls::SKIP) | |
e3deeb9c AM |
8549 | return; |
8550 | ||
34e0882b AM |
8551 | if (target->replace_tls_get_addr(gsym)) |
8552 | // Change a __tls_get_addr reference to __tls_get_addr_opt | |
8553 | // so dynamic relocs are emitted against the latter symbol. | |
8554 | gsym = target->tls_get_addr_opt(); | |
8555 | ||
e3deeb9c AM |
8556 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) |
8557 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8558 | { | |
8559 | this->expect_tls_get_addr_call(); | |
8560 | const bool final = gsym->final_value_is_known(); | |
8561 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8562 | if (tls_type != tls::TLSOPT_NONE) | |
8563 | this->skip_next_tls_get_addr_call(); | |
8564 | } | |
8565 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8566 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8567 | { | |
8568 | this->expect_tls_get_addr_call(); | |
8569 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8570 | if (tls_type != tls::TLSOPT_NONE) | |
8571 | this->skip_next_tls_get_addr_call(); | |
8572 | } | |
8573 | ||
dd93cd0a AM |
8574 | Powerpc_relobj<size, big_endian>* ppc_object |
8575 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
8576 | ||
e5d5f5ed | 8577 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 8578 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
8579 | bool pushed_ifunc = false; |
8580 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 8581 | { |
0e123f69 | 8582 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 8583 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8584 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 8585 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 8586 | pushed_ifunc = true; |
ec661b9d | 8587 | } |
e5d5f5ed | 8588 | |
42cacb20 DE |
8589 | switch (r_type) |
8590 | { | |
8591 | case elfcpp::R_POWERPC_NONE: | |
8592 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
8593 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 8594 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 8595 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 8596 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
8597 | case elfcpp::R_POWERPC_PLTSEQ: |
8598 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
8599 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
8600 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
8601 | case elfcpp::R_PPC64_PCREL_OPT: |
8602 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
8603 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
8604 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
8605 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
8606 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
8607 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
8608 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
8609 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
e4dff765 AM |
8610 | case elfcpp::R_PPC64_D34: |
8611 | case elfcpp::R_PPC64_D34_LO: | |
8612 | case elfcpp::R_PPC64_D34_HI30: | |
8613 | case elfcpp::R_PPC64_D34_HA30: | |
8614 | case elfcpp::R_PPC64_D28: | |
8615 | case elfcpp::R_PPC64_PCREL34: | |
8616 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
8617 | case elfcpp::R_PPC64_TPREL34: |
8618 | case elfcpp::R_PPC64_DTPREL34: | |
dd93cd0a AM |
8619 | break; |
8620 | ||
8621 | case elfcpp::R_PPC64_TOC: | |
8622 | { | |
8623 | Output_data_got_powerpc<size, big_endian>* got | |
8624 | = target->got_section(symtab, layout); | |
8625 | if (parameters->options().output_is_position_independent()) | |
8626 | { | |
bfdfa4cd AM |
8627 | Address off = reloc.get_r_offset(); |
8628 | if (size == 64 | |
8629 | && data_shndx == ppc_object->opd_shndx() | |
8630 | && ppc_object->get_opd_discard(off - 8)) | |
8631 | break; | |
8632 | ||
dd93cd0a AM |
8633 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8634 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
8635 | if (data_shndx != ppc_object->opd_shndx()) | |
8636 | symobj = static_cast | |
8637 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8638 | rela_dyn->add_output_section_relative(got->output_section(), | |
8639 | elfcpp::R_POWERPC_RELATIVE, | |
8640 | output_section, | |
bfdfa4cd | 8641 | object, data_shndx, off, |
dd93cd0a AM |
8642 | symobj->toc_base_offset()); |
8643 | } | |
8644 | } | |
42cacb20 DE |
8645 | break; |
8646 | ||
c9269dff | 8647 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 8648 | if (size == 64 |
9055360d | 8649 | && target->abiversion() < 2 |
bfdfa4cd AM |
8650 | && data_shndx == ppc_object->opd_shndx() |
8651 | && (gsym->is_defined_in_discarded_section() | |
8652 | || gsym->object() != object)) | |
8653 | { | |
8654 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
8655 | break; | |
8656 | } | |
d8e90251 | 8657 | // Fall through. |
dd93cd0a | 8658 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 8659 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
8660 | case elfcpp::R_POWERPC_UADDR32: |
8661 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
8662 | case elfcpp::R_POWERPC_ADDR16: |
8663 | case elfcpp::R_POWERPC_ADDR16_LO: | |
8664 | case elfcpp::R_POWERPC_ADDR16_HI: | |
8665 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 8666 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
8667 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8668 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
8669 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
8670 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
8671 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
8672 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
8673 | case elfcpp::R_PPC64_ADDR16_DS: | |
8674 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
8675 | case elfcpp::R_POWERPC_ADDR14: | |
8676 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8677 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 8678 | { |
c9269dff AM |
8679 | // Make a PLT entry if necessary. |
8680 | if (gsym->needs_plt_entry()) | |
8681 | { | |
9055360d AM |
8682 | // Since this is not a PC-relative relocation, we may be |
8683 | // taking the address of a function. In that case we need to | |
8684 | // set the entry in the dynamic symbol table to the address of | |
8685 | // the PLT call stub. | |
8686 | bool need_ifunc_plt = false; | |
8687 | if ((size == 32 || target->abiversion() >= 2) | |
8688 | && gsym->is_from_dynobj() | |
8689 | && !parameters->options().output_is_position_independent()) | |
8690 | { | |
8691 | gsym->set_needs_dynsym_value(); | |
8692 | need_ifunc_plt = true; | |
8693 | } | |
8694 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 8695 | { |
0e123f69 | 8696 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8697 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 8698 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
8699 | reloc.get_r_addend()); |
8700 | target->make_plt_entry(symtab, layout, gsym); | |
8701 | } | |
c9269dff AM |
8702 | } |
8703 | // Make a dynamic relocation if necessary. | |
88b8e639 | 8704 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 8705 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 8706 | { |
a82bef93 ST |
8707 | if (!parameters->options().output_is_position_independent() |
8708 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
8709 | { |
8710 | target->copy_reloc(symtab, layout, object, | |
8711 | data_shndx, output_section, gsym, reloc); | |
8712 | } | |
9055360d AM |
8713 | else if ((((size == 32 |
8714 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
8715 | || (size == 64 | |
8716 | && r_type == elfcpp::R_PPC64_ADDR64 | |
8717 | && target->abiversion() >= 2)) | |
627b30b7 AM |
8718 | && gsym->can_use_relative_reloc(false) |
8719 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
8720 | && parameters->options().shared())) | |
8721 | || (size == 64 | |
8722 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 8723 | && target->abiversion() < 2 |
627b30b7 AM |
8724 | && (gsym->can_use_relative_reloc(false) |
8725 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 8726 | { |
b3ccdeb5 AM |
8727 | Reloc_section* rela_dyn |
8728 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
8729 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
8730 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
8731 | rela_dyn->add_symbolless_global_addend( |
8732 | gsym, dynrel, output_section, object, data_shndx, | |
8733 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
8734 | } |
8735 | else | |
8736 | { | |
b3ccdeb5 AM |
8737 | Reloc_section* rela_dyn |
8738 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 8739 | check_non_pic(object, r_type); |
dd93cd0a AM |
8740 | rela_dyn->add_global(gsym, r_type, output_section, |
8741 | object, data_shndx, | |
8742 | reloc.get_r_offset(), | |
8743 | reloc.get_r_addend()); | |
5edad15d AM |
8744 | |
8745 | if (size == 64 | |
8746 | && parameters->options().toc_optimize() | |
8747 | && data_shndx == ppc_object->toc_shndx()) | |
8748 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
8749 | } |
8750 | } | |
42cacb20 DE |
8751 | } |
8752 | break; | |
8753 | ||
e4dff765 AM |
8754 | case elfcpp::R_PPC64_PLT_PCREL34: |
8755 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
08be3224 AM |
8756 | case elfcpp::R_POWERPC_PLT16_LO: |
8757 | case elfcpp::R_POWERPC_PLT16_HI: | |
8758 | case elfcpp::R_POWERPC_PLT16_HA: | |
8759 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8760 | if (!pushed_ifunc) | |
8761 | target->make_plt_entry(symtab, layout, gsym); | |
8762 | break; | |
8763 | ||
32f59844 AM |
8764 | case elfcpp::R_PPC64_REL24_NOTOC: |
8765 | if (size == 32) | |
8766 | break; | |
8767 | // Fall through. | |
cf43a2fe | 8768 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 8769 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
8770 | if (!is_ifunc) |
8771 | { | |
0e123f69 | 8772 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8773 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8774 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
8775 | if (gsym->needs_plt_entry() |
8776 | || (!gsym->final_value_is_known() | |
8777 | && (gsym->is_undefined() | |
8778 | || gsym->is_from_dynobj() | |
8779 | || gsym->is_preemptible()))) | |
8780 | target->make_plt_entry(symtab, layout, gsym); | |
8781 | } | |
d8e90251 | 8782 | // Fall through. |
42cacb20 | 8783 | |
3ea0a085 | 8784 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 8785 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 8786 | // Make a dynamic relocation if necessary. |
88b8e639 | 8787 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 8788 | { |
a82bef93 ST |
8789 | if (!parameters->options().output_is_position_independent() |
8790 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
8791 | { |
8792 | target->copy_reloc(symtab, layout, object, | |
8793 | data_shndx, output_section, gsym, | |
8794 | reloc); | |
8795 | } | |
8796 | else | |
8797 | { | |
b3ccdeb5 AM |
8798 | Reloc_section* rela_dyn |
8799 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
8800 | check_non_pic(object, r_type); |
8801 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
8802 | data_shndx, reloc.get_r_offset(), | |
8803 | reloc.get_r_addend()); | |
8804 | } | |
8805 | } | |
8806 | break; | |
8807 | ||
ec661b9d AM |
8808 | case elfcpp::R_POWERPC_REL14: |
8809 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8810 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 8811 | if (!is_ifunc) |
0e123f69 AM |
8812 | { |
8813 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8814 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
8815 | r_type, r_sym, reloc.get_r_addend()); | |
8816 | } | |
ec661b9d AM |
8817 | break; |
8818 | ||
7e57d19e AM |
8819 | case elfcpp::R_PPC64_TOCSAVE: |
8820 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
8821 | // caller has already saved r2 and thus a plt call stub need not | |
8822 | // save r2. | |
8823 | if (size == 64 | |
8824 | && target->mark_pltcall(ppc_object, data_shndx, | |
8825 | reloc.get_r_offset() - 4, symtab)) | |
8826 | { | |
8827 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8828 | bool is_ordinary; | |
8829 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
8830 | if (!is_ordinary) | |
8831 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
8832 | r_sym, shndx); | |
8833 | else | |
8834 | { | |
8835 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
8836 | target->add_tocsave(ppc_object, shndx, | |
8837 | sym->value() + reloc.get_r_addend()); | |
8838 | } | |
8839 | } | |
8840 | break; | |
8841 | ||
6ce78956 AM |
8842 | case elfcpp::R_POWERPC_REL16: |
8843 | case elfcpp::R_POWERPC_REL16_LO: | |
8844 | case elfcpp::R_POWERPC_REL16_HI: | |
8845 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 8846 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
8847 | case elfcpp::R_PPC64_REL16_HIGH: |
8848 | case elfcpp::R_PPC64_REL16_HIGHA: | |
8849 | case elfcpp::R_PPC64_REL16_HIGHER: | |
8850 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
8851 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
8852 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 8853 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 8854 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 8855 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 8856 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
8857 | case elfcpp::R_PPC64_SECTOFF_DS: |
8858 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8859 | case elfcpp::R_POWERPC_TPREL16: | |
8860 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8861 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 8862 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
8863 | case elfcpp::R_PPC64_TPREL16_DS: |
8864 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8865 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8866 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8867 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 8868 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 8869 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 8870 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
8871 | case elfcpp::R_POWERPC_DTPREL16: |
8872 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8873 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8874 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
8875 | case elfcpp::R_PPC64_DTPREL16_DS: |
8876 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
8877 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8878 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8879 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8880 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8881 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8882 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
8883 | case elfcpp::R_PPC64_TLSGD: |
8884 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 8885 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
8886 | break; |
8887 | ||
e4dff765 | 8888 | case elfcpp::R_PPC64_GOT_PCREL34: |
42cacb20 DE |
8889 | case elfcpp::R_POWERPC_GOT16: |
8890 | case elfcpp::R_POWERPC_GOT16_LO: | |
8891 | case elfcpp::R_POWERPC_GOT16_HI: | |
8892 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
8893 | case elfcpp::R_PPC64_GOT16_DS: |
8894 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 8895 | { |
c9269dff AM |
8896 | // The symbol requires a GOT entry. |
8897 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
8898 | |
8899 | got = target->got_section(symtab, layout); | |
2e702c99 | 8900 | if (gsym->final_value_is_known()) |
2e702c99 | 8901 | { |
b01a4b04 AM |
8902 | if (is_ifunc |
8903 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
8904 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
8905 | else | |
8906 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
8907 | } | |
8908 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
8909 | { | |
8910 | // If we are generating a shared object or a pie, this | |
8911 | // symbol's GOT entry will be set by a dynamic relocation. | |
8912 | unsigned int off = got->add_constant(0); | |
8913 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
8914 | ||
b3ccdeb5 AM |
8915 | Reloc_section* rela_dyn |
8916 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
8917 | ||
e5d5f5ed | 8918 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
8919 | && !((size == 32 |
8920 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
8921 | && gsym->visibility() == elfcpp::STV_PROTECTED |
8922 | && parameters->options().shared())) | |
2e702c99 | 8923 | { |
b3ccdeb5 AM |
8924 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
8925 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
8926 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
8927 | } | |
8928 | else | |
8929 | { | |
8930 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
8931 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 8932 | } |
2e702c99 | 8933 | } |
42cacb20 DE |
8934 | } |
8935 | break; | |
8936 | ||
cf43a2fe AM |
8937 | case elfcpp::R_PPC64_TOC16: |
8938 | case elfcpp::R_PPC64_TOC16_LO: | |
8939 | case elfcpp::R_PPC64_TOC16_HI: | |
8940 | case elfcpp::R_PPC64_TOC16_HA: | |
8941 | case elfcpp::R_PPC64_TOC16_DS: | |
8942 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
8943 | // We need a GOT section. |
8944 | target->got_section(symtab, layout); | |
8945 | break; | |
8946 | ||
87c69f97 | 8947 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
dd93cd0a AM |
8948 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
8949 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8950 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8951 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8952 | { | |
8953 | const bool final = gsym->final_value_is_known(); | |
8954 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8955 | if (tls_type == tls::TLSOPT_NONE) | |
8956 | { | |
8957 | Output_data_got_powerpc<size, big_endian>* got | |
8958 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
8959 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8960 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
8961 | elfcpp::R_POWERPC_DTPMOD, |
8962 | elfcpp::R_POWERPC_DTPREL); | |
8963 | } | |
8964 | else if (tls_type == tls::TLSOPT_TO_IE) | |
8965 | { | |
acc276d8 AM |
8966 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
8967 | { | |
8968 | Output_data_got_powerpc<size, big_endian>* got | |
8969 | = target->got_section(symtab, layout); | |
8970 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8971 | if (gsym->is_undefined() | |
8972 | || gsym->is_from_dynobj()) | |
8973 | { | |
8974 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
8975 | elfcpp::R_POWERPC_TPREL); | |
8976 | } | |
8977 | else | |
8978 | { | |
8979 | unsigned int off = got->add_constant(0); | |
8980 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
8981 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
8982 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
8983 | got, off, 0); | |
8984 | } | |
8985 | } | |
dd93cd0a AM |
8986 | } |
8987 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8988 | { | |
8989 | // no GOT relocs needed for Local Exec. | |
8990 | } | |
8991 | else | |
8992 | gold_unreachable(); | |
8993 | } | |
42cacb20 DE |
8994 | break; |
8995 | ||
87c69f97 | 8996 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: |
dd93cd0a AM |
8997 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
8998 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8999 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9000 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9001 | { | |
9002 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
9003 | if (tls_type == tls::TLSOPT_NONE) | |
9004 | target->tlsld_got_offset(symtab, layout, object); | |
9005 | else if (tls_type == tls::TLSOPT_TO_LE) | |
9006 | { | |
9007 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
9008 | if (parameters->options().emit_relocs()) |
9009 | { | |
9010 | Output_section* os = layout->tls_segment()->first_section(); | |
9011 | gold_assert(os != NULL); | |
9012 | os->set_needs_symtab_index(); | |
9013 | } | |
dd93cd0a AM |
9014 | } |
9015 | else | |
9016 | gold_unreachable(); | |
9017 | } | |
9018 | break; | |
9019 | ||
87c69f97 | 9020 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: |
dd93cd0a AM |
9021 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
9022 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9023 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9024 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9025 | { | |
9026 | Output_data_got_powerpc<size, big_endian>* got | |
9027 | = target->got_section(symtab, layout); | |
bd73a62d AM |
9028 | if (!gsym->final_value_is_known() |
9029 | && (gsym->is_from_dynobj() | |
9030 | || gsym->is_undefined() | |
9031 | || gsym->is_preemptible())) | |
9032 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
9033 | target->rela_dyn_section(layout), | |
9034 | elfcpp::R_POWERPC_DTPREL); | |
9035 | else | |
9036 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
9037 | } |
9038 | break; | |
9039 | ||
87c69f97 | 9040 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: |
dd93cd0a AM |
9041 | case elfcpp::R_POWERPC_GOT_TPREL16: |
9042 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9043 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9044 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9045 | { | |
9046 | const bool final = gsym->final_value_is_known(); | |
9047 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
9048 | if (tls_type == tls::TLSOPT_NONE) | |
9049 | { | |
acc276d8 AM |
9050 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
9051 | { | |
9052 | Output_data_got_powerpc<size, big_endian>* got | |
9053 | = target->got_section(symtab, layout); | |
9054 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
9055 | if (gsym->is_undefined() | |
9056 | || gsym->is_from_dynobj()) | |
9057 | { | |
9058 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
9059 | elfcpp::R_POWERPC_TPREL); | |
9060 | } | |
9061 | else | |
9062 | { | |
9063 | unsigned int off = got->add_constant(0); | |
9064 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
9065 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
9066 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
9067 | got, off, 0); | |
9068 | } | |
9069 | } | |
dd93cd0a AM |
9070 | } |
9071 | else if (tls_type == tls::TLSOPT_TO_LE) | |
9072 | { | |
9073 | // no GOT relocs needed for Local Exec. | |
9074 | } | |
9075 | else | |
9076 | gold_unreachable(); | |
9077 | } | |
42cacb20 DE |
9078 | break; |
9079 | ||
9080 | default: | |
9081 | unsupported_reloc_global(object, r_type, gsym); | |
9082 | break; | |
9083 | } | |
d8f5a274 | 9084 | |
5edad15d AM |
9085 | if (size == 64 |
9086 | && parameters->options().toc_optimize()) | |
9087 | { | |
9088 | if (data_shndx == ppc_object->toc_shndx()) | |
9089 | { | |
9090 | bool ok = true; | |
9091 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
9092 | || (is_ifunc && target->abiversion() < 2)) | |
9093 | ok = false; | |
9094 | else if (parameters->options().output_is_position_independent() | |
9095 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
9096 | ok = false; | |
9097 | if (!ok) | |
9098 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
9099 | } | |
9100 | ||
9101 | enum {no_check, check_lo, check_ha} insn_check; | |
9102 | switch (r_type) | |
9103 | { | |
9104 | default: | |
9105 | insn_check = no_check; | |
9106 | break; | |
9107 | ||
9108 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9109 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9110 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9111 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9112 | case elfcpp::R_POWERPC_GOT16_HA: | |
9113 | case elfcpp::R_PPC64_TOC16_HA: | |
9114 | insn_check = check_ha; | |
9115 | break; | |
9116 | ||
9117 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
9118 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9119 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9120 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9121 | case elfcpp::R_POWERPC_GOT16_LO: | |
9122 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9123 | case elfcpp::R_PPC64_TOC16_LO: | |
9124 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
9125 | insn_check = check_lo; | |
9126 | break; | |
9127 | } | |
9128 | ||
9129 | section_size_type slen; | |
9130 | const unsigned char* view = NULL; | |
9131 | if (insn_check != no_check) | |
9132 | { | |
9133 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
9134 | section_size_type off = | |
9135 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
9136 | if (off < slen) | |
9137 | { | |
9138 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
9139 | if (insn_check == check_lo | |
9140 | ? !ok_lo_toc_insn(insn, r_type) | |
9141 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9142 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9143 | { | |
9144 | ppc_object->set_no_toc_opt(); | |
9145 | gold_warning(_("%s: toc optimization is not supported " | |
9146 | "for %#08x instruction"), | |
9147 | ppc_object->name().c_str(), insn); | |
9148 | } | |
9149 | } | |
9150 | } | |
9151 | ||
9152 | switch (r_type) | |
9153 | { | |
9154 | default: | |
9155 | break; | |
9156 | case elfcpp::R_PPC64_TOC16: | |
9157 | case elfcpp::R_PPC64_TOC16_LO: | |
9158 | case elfcpp::R_PPC64_TOC16_HI: | |
9159 | case elfcpp::R_PPC64_TOC16_HA: | |
9160 | case elfcpp::R_PPC64_TOC16_DS: | |
9161 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
9162 | if (gsym->source() == Symbol::FROM_OBJECT | |
9163 | && !gsym->object()->is_dynamic()) | |
9164 | { | |
9165 | Powerpc_relobj<size, big_endian>* sym_object | |
9166 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
9167 | bool is_ordinary; | |
9168 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
9169 | if (shndx == sym_object->toc_shndx()) | |
9170 | { | |
9171 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
412294da | 9172 | Address dst_off = sym->value() + reloc.get_r_addend(); |
5edad15d AM |
9173 | if (dst_off < sym_object->section_size(shndx)) |
9174 | { | |
9175 | bool ok = false; | |
9176 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
9177 | ok = true; | |
9178 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
9179 | { | |
9180 | // Need to check that the insn is a ld | |
9181 | if (!view) | |
9182 | view = ppc_object->section_contents(data_shndx, | |
9183 | &slen, | |
9184 | false); | |
9185 | section_size_type off = | |
9186 | (convert_to_section_size_type(reloc.get_r_offset()) | |
9187 | + (big_endian ? -2 : 3)); | |
9188 | if (off < slen | |
9189 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
9190 | ok = true; | |
9191 | } | |
9192 | if (!ok) | |
9193 | sym_object->set_no_toc_opt(dst_off); | |
9194 | } | |
9195 | } | |
9196 | } | |
9197 | break; | |
9198 | } | |
9199 | } | |
9200 | ||
f159cdb6 AM |
9201 | if (size == 32) |
9202 | { | |
9203 | switch (r_type) | |
9204 | { | |
9205 | case elfcpp::R_PPC_LOCAL24PC: | |
9206 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
9207 | gold_error(_("%s: unsupported -mbss-plt code"), | |
9208 | ppc_object->name().c_str()); | |
9209 | break; | |
9210 | default: | |
9211 | break; | |
9212 | } | |
9213 | } | |
9214 | ||
d8f5a274 AM |
9215 | switch (r_type) |
9216 | { | |
9217 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
9218 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
9219 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
9220 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
9221 | case elfcpp::R_POWERPC_GOT16: | |
9222 | case elfcpp::R_PPC64_GOT16_DS: | |
9223 | case elfcpp::R_PPC64_TOC16: | |
9224 | case elfcpp::R_PPC64_TOC16_DS: | |
9225 | ppc_object->set_has_small_toc_reloc(); | |
89c52ae3 AM |
9226 | break; |
9227 | default: | |
9228 | break; | |
9229 | } | |
9230 | ||
9231 | switch (r_type) | |
9232 | { | |
89c52ae3 AM |
9233 | case elfcpp::R_PPC64_TPREL16_DS: |
9234 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9235 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9236 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9237 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9238 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9239 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9240 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9241 | case elfcpp::R_PPC64_TPREL34: | |
252dcdf4 AM |
9242 | if (size != 64) |
9243 | break; | |
9244 | // Fall through. | |
9245 | case elfcpp::R_POWERPC_TPREL16: | |
9246 | case elfcpp::R_POWERPC_TPREL16_LO: | |
9247 | case elfcpp::R_POWERPC_TPREL16_HI: | |
9248 | case elfcpp::R_POWERPC_TPREL16_HA: | |
89c52ae3 AM |
9249 | layout->set_has_static_tls(); |
9250 | break; | |
9251 | default: | |
9252 | break; | |
9253 | } | |
9254 | ||
252dcdf4 AM |
9255 | switch (r_type) |
9256 | { | |
9257 | case elfcpp::R_POWERPC_TPREL16_HA: | |
9258 | if (target->tprel_opt()) | |
9259 | { | |
9260 | section_size_type slen; | |
9261 | const unsigned char* view = NULL; | |
9262 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
9263 | section_size_type off | |
9264 | = convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
9265 | if (off < slen) | |
9266 | { | |
9267 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
9268 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
9269 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
4e0e019f | 9270 | target->set_no_tprel_opt(); |
252dcdf4 AM |
9271 | } |
9272 | } | |
9273 | break; | |
9274 | ||
9275 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9276 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9277 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9278 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9279 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9280 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9281 | if (size != 64) | |
9282 | break; | |
9283 | // Fall through. | |
9284 | case elfcpp::R_POWERPC_TPREL16_HI: | |
4e0e019f | 9285 | target->set_no_tprel_opt(); |
252dcdf4 AM |
9286 | break; |
9287 | default: | |
9288 | break; | |
9289 | } | |
9290 | ||
89c52ae3 AM |
9291 | switch (r_type) |
9292 | { | |
9293 | case elfcpp::R_PPC64_D34: | |
9294 | case elfcpp::R_PPC64_D34_LO: | |
9295 | case elfcpp::R_PPC64_D34_HI30: | |
9296 | case elfcpp::R_PPC64_D34_HA30: | |
9297 | case elfcpp::R_PPC64_D28: | |
9298 | case elfcpp::R_PPC64_PCREL34: | |
9299 | case elfcpp::R_PPC64_PCREL28: | |
9300 | case elfcpp::R_PPC64_TPREL34: | |
9301 | case elfcpp::R_PPC64_DTPREL34: | |
9302 | case elfcpp::R_PPC64_PLT_PCREL34: | |
9303 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
9304 | case elfcpp::R_PPC64_GOT_PCREL34: | |
87c69f97 AM |
9305 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
9306 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
9307 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
9308 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
63e5eea2 | 9309 | target->set_power10_relocs(); |
89c52ae3 | 9310 | break; |
d8f5a274 AM |
9311 | default: |
9312 | break; | |
9313 | } | |
42cacb20 DE |
9314 | } |
9315 | ||
6d03d481 ST |
9316 | // Process relocations for gc. |
9317 | ||
9318 | template<int size, bool big_endian> | |
9319 | void | |
9320 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
9321 | Symbol_table* symtab, |
9322 | Layout* layout, | |
9323 | Sized_relobj_file<size, big_endian>* object, | |
9324 | unsigned int data_shndx, | |
9325 | unsigned int, | |
9326 | const unsigned char* prelocs, | |
9327 | size_t reloc_count, | |
9328 | Output_section* output_section, | |
9329 | bool needs_special_offset_handling, | |
9330 | size_t local_symbol_count, | |
9331 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
9332 | { |
9333 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
9334 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9335 | Classify_reloc; | |
9336 | ||
e81fea4d AM |
9337 | Powerpc_relobj<size, big_endian>* ppc_object |
9338 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
9339 | if (size == 64) | |
9340 | ppc_object->set_opd_valid(); | |
9341 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
9342 | { | |
9343 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
9344 | for (p = ppc_object->access_from_map()->begin(); | |
9345 | p != ppc_object->access_from_map()->end(); | |
9346 | ++p) | |
9347 | { | |
9348 | Address dst_off = p->first; | |
9349 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
9350 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
9351 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
9352 | { | |
efc6fa12 | 9353 | Relobj* src_obj = s->first; |
e81fea4d AM |
9354 | unsigned int src_indx = s->second; |
9355 | symtab->gc()->add_reference(src_obj, src_indx, | |
9356 | ppc_object, dst_indx); | |
9357 | } | |
9358 | p->second.clear(); | |
9359 | } | |
9360 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 9361 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
9362 | // Don't look at .opd relocs as .opd will reference everything. |
9363 | return; | |
9364 | } | |
6d03d481 | 9365 | |
4d625b70 | 9366 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
9367 | symtab, |
9368 | layout, | |
9369 | this, | |
9370 | object, | |
9371 | data_shndx, | |
9372 | prelocs, | |
9373 | reloc_count, | |
9374 | output_section, | |
9375 | needs_special_offset_handling, | |
9376 | local_symbol_count, | |
9377 | plocal_symbols); | |
9378 | } | |
9379 | ||
e81fea4d AM |
9380 | // Handle target specific gc actions when adding a gc reference from |
9381 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
9382 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
9383 | // section of a function descriptor. | |
9384 | ||
9385 | template<int size, bool big_endian> | |
9386 | void | |
9387 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
9388 | Symbol_table* symtab, | |
efc6fa12 | 9389 | Relobj* src_obj, |
e81fea4d | 9390 | unsigned int src_shndx, |
efc6fa12 | 9391 | Relobj* dst_obj, |
e81fea4d AM |
9392 | unsigned int dst_shndx, |
9393 | Address dst_off) const | |
9394 | { | |
6c77229c AM |
9395 | if (size != 64 || dst_obj->is_dynamic()) |
9396 | return; | |
9397 | ||
e81fea4d AM |
9398 | Powerpc_relobj<size, big_endian>* ppc_object |
9399 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 9400 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
9401 | { |
9402 | if (ppc_object->opd_valid()) | |
9403 | { | |
9404 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
9405 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
9406 | } | |
9407 | else | |
9408 | { | |
9409 | // If we haven't run scan_opd_relocs, we must delay | |
9410 | // processing this function descriptor reference. | |
9411 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
9412 | } | |
9413 | } | |
9414 | } | |
9415 | ||
9416 | // Add any special sections for this symbol to the gc work list. | |
9417 | // For powerpc64, this adds the code section of a function | |
9418 | // descriptor. | |
9419 | ||
9420 | template<int size, bool big_endian> | |
9421 | void | |
9422 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
9423 | Symbol_table* symtab, | |
9424 | Symbol* sym) const | |
9425 | { | |
6a31512f | 9426 | if (size == 64 && sym->object()->pluginobj() == NULL) |
e81fea4d AM |
9427 | { |
9428 | Powerpc_relobj<size, big_endian>* ppc_object | |
9429 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
9430 | bool is_ordinary; | |
9431 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 9432 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
9433 | { |
9434 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
9435 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
9436 | if (ppc_object->opd_valid()) |
9437 | { | |
9438 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
9439 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
9440 | dst_indx)); | |
c6de8ed4 AM |
9441 | } |
9442 | else | |
9443 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
9444 | } |
9445 | } | |
9446 | } | |
9447 | ||
dc3714f3 AM |
9448 | // For a symbol location in .opd, set LOC to the location of the |
9449 | // function entry. | |
9450 | ||
9451 | template<int size, bool big_endian> | |
9452 | void | |
9453 | Target_powerpc<size, big_endian>::do_function_location( | |
9454 | Symbol_location* loc) const | |
9455 | { | |
a2d7bf59 | 9456 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
9457 | { |
9458 | if (loc->object->is_dynamic()) | |
9459 | { | |
9460 | Powerpc_dynobj<size, big_endian>* ppc_object | |
9461 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
9462 | if (loc->shndx == ppc_object->opd_shndx()) | |
9463 | { | |
9464 | Address dest_off; | |
9465 | Address off = loc->offset - ppc_object->opd_address(); | |
9466 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
9467 | loc->offset = dest_off; | |
9468 | } | |
9469 | } | |
9470 | else | |
9471 | { | |
9472 | const Powerpc_relobj<size, big_endian>* ppc_object | |
9473 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
9474 | if (loc->shndx == ppc_object->opd_shndx()) | |
9475 | { | |
9476 | Address dest_off; | |
9477 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
9478 | loc->offset = dest_off; | |
9479 | } | |
9480 | } | |
9481 | } | |
9482 | } | |
9483 | ||
bbec1a5d AM |
9484 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
9485 | // compiled with -fsplit-stack. The function calls non-split-stack | |
9486 | // code. Change the function to ensure it has enough stack space to | |
9487 | // call some random function. | |
9488 | ||
9489 | template<int size, bool big_endian> | |
9490 | void | |
9491 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
9492 | Relobj* object, | |
9493 | unsigned int shndx, | |
9494 | section_offset_type fnoffset, | |
9495 | section_size_type fnsize, | |
6e0813d3 CC |
9496 | const unsigned char* prelocs, |
9497 | size_t reloc_count, | |
bbec1a5d AM |
9498 | unsigned char* view, |
9499 | section_size_type view_size, | |
9500 | std::string* from, | |
9501 | std::string* to) const | |
9502 | { | |
9503 | // 32-bit not supported. | |
9504 | if (size == 32) | |
9505 | { | |
9506 | // warn | |
9507 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
9508 | prelocs, reloc_count, view, view_size, |
9509 | from, to); | |
bbec1a5d AM |
9510 | return; |
9511 | } | |
9512 | ||
9513 | // The function always starts with | |
9514 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
9515 | // addis %r12,%r1,-allocate@ha | |
9516 | // addi %r12,%r12,-allocate@l | |
9517 | // cmpld %r12,%r0 | |
9518 | // but note that the addis or addi may be replaced with a nop | |
9519 | ||
9520 | unsigned char *entry = view + fnoffset; | |
9521 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9522 | ||
9523 | if ((insn & 0xffff0000) == addis_2_12) | |
9524 | { | |
9525 | /* Skip ELFv2 global entry code. */ | |
9526 | entry += 8; | |
9527 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9528 | } | |
9529 | ||
9530 | unsigned char *pinsn = entry; | |
9531 | bool ok = false; | |
9532 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
9533 | if (insn == ld_private_ss) | |
9534 | { | |
9535 | int32_t allocate = 0; | |
9536 | while (1) | |
9537 | { | |
9538 | pinsn += 4; | |
9539 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
9540 | if ((insn & 0xffff0000) == addis_12_1) | |
9541 | allocate += (insn & 0xffff) << 16; | |
9542 | else if ((insn & 0xffff0000) == addi_12_1 | |
9543 | || (insn & 0xffff0000) == addi_12_12) | |
9544 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
9545 | else if (insn != nop) | |
9546 | break; | |
9547 | } | |
9548 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
9549 | { | |
9550 | int extra = parameters->options().split_stack_adjust_size(); | |
9551 | allocate -= extra; | |
9552 | if (allocate >= 0 || extra < 0) | |
9553 | { | |
9554 | object->error(_("split-stack stack size overflow at " | |
9555 | "section %u offset %0zx"), | |
9556 | shndx, static_cast<size_t>(fnoffset)); | |
9557 | return; | |
9558 | } | |
9559 | pinsn = entry + 4; | |
9560 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
9561 | if (insn != addis_12_1) | |
9562 | { | |
9563 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9564 | pinsn += 4; | |
9565 | insn = addi_12_12 | (allocate & 0xffff); | |
9566 | if (insn != addi_12_12) | |
9567 | { | |
9568 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9569 | pinsn += 4; | |
9570 | } | |
9571 | } | |
9572 | else | |
9573 | { | |
9574 | insn = addi_12_1 | (allocate & 0xffff); | |
9575 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9576 | pinsn += 4; | |
9577 | } | |
9578 | if (pinsn != entry + 12) | |
9579 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
9580 | ||
9581 | ok = true; | |
9582 | } | |
9583 | } | |
9584 | ||
9585 | if (!ok) | |
9586 | { | |
9587 | if (!object->has_no_split_stack()) | |
9588 | object->error(_("failed to match split-stack sequence at " | |
9589 | "section %u offset %0zx"), | |
9590 | shndx, static_cast<size_t>(fnoffset)); | |
9591 | } | |
9592 | } | |
9593 | ||
42cacb20 DE |
9594 | // Scan relocations for a section. |
9595 | ||
9596 | template<int size, bool big_endian> | |
9597 | void | |
9598 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
9599 | Symbol_table* symtab, |
9600 | Layout* layout, | |
9601 | Sized_relobj_file<size, big_endian>* object, | |
9602 | unsigned int data_shndx, | |
9603 | unsigned int sh_type, | |
9604 | const unsigned char* prelocs, | |
9605 | size_t reloc_count, | |
9606 | Output_section* output_section, | |
9607 | bool needs_special_offset_handling, | |
9608 | size_t local_symbol_count, | |
9609 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
9610 | { |
9611 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
9612 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9613 | Classify_reloc; | |
42cacb20 | 9614 | |
7ee7ff70 AM |
9615 | if (!this->plt_localentry0_init_) |
9616 | { | |
9617 | bool plt_localentry0 = false; | |
9618 | if (size == 64 | |
9619 | && this->abiversion() >= 2) | |
9620 | { | |
9621 | if (parameters->options().user_set_plt_localentry()) | |
9622 | plt_localentry0 = parameters->options().plt_localentry(); | |
d44c746a AM |
9623 | if (plt_localentry0 |
9624 | && symtab->lookup("GLIBC_2.26", NULL) == NULL) | |
9625 | gold_warning(_("--plt-localentry is especially dangerous without " | |
9626 | "ld.so support to detect ABI violations")); | |
7ee7ff70 AM |
9627 | } |
9628 | this->plt_localentry0_ = plt_localentry0; | |
9629 | this->plt_localentry0_init_ = true; | |
9630 | } | |
9631 | ||
42cacb20 DE |
9632 | if (sh_type == elfcpp::SHT_REL) |
9633 | { | |
9634 | gold_error(_("%s: unsupported REL reloc section"), | |
9635 | object->name().c_str()); | |
9636 | return; | |
9637 | } | |
9638 | ||
4d625b70 | 9639 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
9640 | symtab, |
9641 | layout, | |
9642 | this, | |
9643 | object, | |
9644 | data_shndx, | |
9645 | prelocs, | |
9646 | reloc_count, | |
9647 | output_section, | |
9648 | needs_special_offset_handling, | |
9649 | local_symbol_count, | |
9650 | plocal_symbols); | |
63e5eea2 AM |
9651 | |
9652 | if (this->plt_localentry0_ && this->power10_relocs_) | |
9653 | { | |
9654 | gold_warning(_("--plt-localentry is incompatible with " | |
9655 | "power10 pc-relative code")); | |
9656 | this->plt_localentry0_ = false; | |
9657 | } | |
42cacb20 DE |
9658 | } |
9659 | ||
ec4dbad3 AM |
9660 | // Functor class for processing the global symbol table. |
9661 | // Removes symbols defined on discarded opd entries. | |
9662 | ||
9663 | template<bool big_endian> | |
9664 | class Global_symbol_visitor_opd | |
9665 | { | |
9666 | public: | |
9667 | Global_symbol_visitor_opd() | |
9668 | { } | |
9669 | ||
9670 | void | |
9671 | operator()(Sized_symbol<64>* sym) | |
9672 | { | |
9673 | if (sym->has_symtab_index() | |
9674 | || sym->source() != Symbol::FROM_OBJECT | |
9675 | || !sym->in_real_elf()) | |
9676 | return; | |
9677 | ||
6c77229c AM |
9678 | if (sym->object()->is_dynamic()) |
9679 | return; | |
9680 | ||
ec4dbad3 AM |
9681 | Powerpc_relobj<64, big_endian>* symobj |
9682 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 9683 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
9684 | return; |
9685 | ||
9686 | bool is_ordinary; | |
9687 | unsigned int shndx = sym->shndx(&is_ordinary); | |
9688 | if (shndx == symobj->opd_shndx() | |
9689 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
9690 | { |
9691 | sym->set_undefined(); | |
e3ee8ed4 | 9692 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
9693 | sym->set_is_defined_in_discarded_section(); |
9694 | sym->set_symtab_index(-1U); | |
9695 | } | |
ec4dbad3 AM |
9696 | } |
9697 | }; | |
9698 | ||
f3a0ed29 AM |
9699 | template<int size, bool big_endian> |
9700 | void | |
9701 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
9702 | Layout* layout, | |
9703 | Symbol_table* symtab) | |
9704 | { | |
9705 | if (size == 64) | |
9706 | { | |
d49044c7 AM |
9707 | Output_data_save_res<size, big_endian>* savres |
9708 | = new Output_data_save_res<size, big_endian>(symtab); | |
9709 | this->savres_section_ = savres; | |
f3a0ed29 AM |
9710 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
9711 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
9712 | savres, ORDER_TEXT, false); | |
9713 | } | |
9714 | } | |
9715 | ||
d8f5a274 AM |
9716 | // Sort linker created .got section first (for the header), then input |
9717 | // sections belonging to files using small model code. | |
9718 | ||
9719 | template<bool big_endian> | |
9720 | class Sort_toc_sections | |
9721 | { | |
9722 | public: | |
9723 | bool | |
9724 | operator()(const Output_section::Input_section& is1, | |
9725 | const Output_section::Input_section& is2) const | |
9726 | { | |
9727 | if (!is1.is_input_section() && is2.is_input_section()) | |
9728 | return true; | |
9729 | bool small1 | |
9730 | = (is1.is_input_section() | |
9731 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
9732 | ->has_small_toc_reloc())); | |
9733 | bool small2 | |
9734 | = (is2.is_input_section() | |
9735 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
9736 | ->has_small_toc_reloc())); | |
9737 | return small1 && !small2; | |
9738 | } | |
9739 | }; | |
9740 | ||
42cacb20 DE |
9741 | // Finalize the sections. |
9742 | ||
9743 | template<int size, bool big_endian> | |
9744 | void | |
d5b40221 DK |
9745 | Target_powerpc<size, big_endian>::do_finalize_sections( |
9746 | Layout* layout, | |
724436fc | 9747 | const Input_objects* input_objects, |
ec4dbad3 | 9748 | Symbol_table* symtab) |
42cacb20 | 9749 | { |
c9824451 AM |
9750 | if (parameters->doing_static_link()) |
9751 | { | |
9752 | // At least some versions of glibc elf-init.o have a strong | |
9753 | // reference to __rela_iplt marker syms. A weak ref would be | |
9754 | // better.. | |
9755 | if (this->iplt_ != NULL) | |
9756 | { | |
9757 | Reloc_section* rel = this->iplt_->rel_plt(); | |
9758 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
9759 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9760 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9761 | elfcpp::STV_HIDDEN, 0, false, true); | |
9762 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
9763 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9764 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9765 | elfcpp::STV_HIDDEN, 0, true, true); | |
9766 | } | |
9767 | else | |
9768 | { | |
9769 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
9770 | Symbol_table::PREDEFINED, 0, 0, | |
9771 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9772 | elfcpp::STV_HIDDEN, 0, true, false); | |
9773 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
9774 | Symbol_table::PREDEFINED, 0, 0, | |
9775 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9776 | elfcpp::STV_HIDDEN, 0, true, false); | |
9777 | } | |
9778 | } | |
9779 | ||
ec4dbad3 AM |
9780 | if (size == 64) |
9781 | { | |
9782 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
9783 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
9784 | |
9785 | if (!parameters->options().relocatable()) | |
9786 | { | |
9787 | this->define_save_restore_funcs(layout, symtab); | |
9788 | ||
9789 | // Annoyingly, we need to make these sections now whether or | |
9790 | // not we need them. If we delay until do_relax then we | |
9791 | // need to mess with the relaxation machinery checkpointing. | |
9792 | this->got_section(symtab, layout); | |
9793 | this->make_brlt_section(layout); | |
d8f5a274 AM |
9794 | |
9795 | if (parameters->options().toc_sort()) | |
9796 | { | |
9797 | Output_section* os = this->got_->output_section(); | |
9798 | if (os != NULL && os->input_sections().size() > 1) | |
9799 | std::stable_sort(os->input_sections().begin(), | |
9800 | os->input_sections().end(), | |
9801 | Sort_toc_sections<big_endian>()); | |
9802 | } | |
ec661b9d | 9803 | } |
ec4dbad3 AM |
9804 | } |
9805 | ||
42cacb20 | 9806 | // Fill in some more dynamic tags. |
c9269dff | 9807 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 9808 | if (odyn != NULL) |
cf43a2fe | 9809 | { |
c9824451 AM |
9810 | const Reloc_section* rel_plt = (this->plt_ == NULL |
9811 | ? NULL | |
9812 | : this->plt_->rel_plt()); | |
9813 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
9814 | this->rela_dyn_, true, size == 32); | |
9815 | ||
9816 | if (size == 32) | |
dd93cd0a | 9817 | { |
c9824451 AM |
9818 | if (this->got_ != NULL) |
9819 | { | |
9820 | this->got_->finalize_data_size(); | |
9821 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
9822 | this->got_, this->got_->g_o_t()); | |
9823 | } | |
34e0882b AM |
9824 | if (this->has_tls_get_addr_opt_) |
9825 | odyn->add_constant(elfcpp::DT_PPC_OPT, elfcpp::PPC_OPT_TLS); | |
dd93cd0a | 9826 | } |
c9824451 | 9827 | else |
dd93cd0a | 9828 | { |
c9824451 AM |
9829 | if (this->glink_ != NULL) |
9830 | { | |
9831 | this->glink_->finalize_data_size(); | |
9832 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
9833 | this->glink_, | |
9e390558 | 9834 | (this->glink_->pltresolve_size() |
c9824451 AM |
9835 | - 32)); |
9836 | } | |
34e0882b | 9837 | if (this->has_localentry0_ || this->has_tls_get_addr_opt_) |
7ee7ff70 | 9838 | odyn->add_constant(elfcpp::DT_PPC64_OPT, |
34e0882b AM |
9839 | ((this->has_localentry0_ |
9840 | ? elfcpp::PPC64_OPT_LOCALENTRY : 0) | |
9841 | | (this->has_tls_get_addr_opt_ | |
9842 | ? elfcpp::PPC64_OPT_TLS : 0))); | |
dd93cd0a | 9843 | } |
c9269dff | 9844 | } |
cf43a2fe | 9845 | |
42cacb20 DE |
9846 | // Emit any relocs we saved in an attempt to avoid generating COPY |
9847 | // relocs. | |
9848 | if (this->copy_relocs_.any_saved_relocs()) | |
9849 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
724436fc AM |
9850 | |
9851 | for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); | |
9852 | p != input_objects->relobj_end(); | |
9853 | ++p) | |
9854 | { | |
9855 | Powerpc_relobj<size, big_endian>* ppc_relobj | |
9856 | = static_cast<Powerpc_relobj<size, big_endian>*>(*p); | |
9857 | if (ppc_relobj->attributes_section_data()) | |
6f3fe02b | 9858 | this->merge_object_attributes(ppc_relobj, |
724436fc AM |
9859 | ppc_relobj->attributes_section_data()); |
9860 | } | |
9861 | for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); | |
9862 | p != input_objects->dynobj_end(); | |
9863 | ++p) | |
9864 | { | |
9865 | Powerpc_dynobj<size, big_endian>* ppc_dynobj | |
9866 | = static_cast<Powerpc_dynobj<size, big_endian>*>(*p); | |
9867 | if (ppc_dynobj->attributes_section_data()) | |
6f3fe02b | 9868 | this->merge_object_attributes(ppc_dynobj, |
724436fc AM |
9869 | ppc_dynobj->attributes_section_data()); |
9870 | } | |
9871 | ||
9872 | // Create a .gnu.attributes section if we have merged any attributes | |
9873 | // from inputs. | |
9874 | if (this->attributes_section_data_ != NULL | |
9875 | && this->attributes_section_data_->size() != 0) | |
9876 | { | |
9877 | Output_attributes_section_data* attributes_section | |
9878 | = new Output_attributes_section_data(*this->attributes_section_data_); | |
9879 | layout->add_output_section_data(".gnu.attributes", | |
9880 | elfcpp::SHT_GNU_ATTRIBUTES, 0, | |
9881 | attributes_section, ORDER_INVALID, false); | |
9882 | } | |
9883 | } | |
9884 | ||
9885 | // Merge object attributes from input file called NAME with those of the | |
9886 | // output. The input object attributes are in the object pointed by PASD. | |
9887 | ||
9888 | template<int size, bool big_endian> | |
9889 | void | |
9890 | Target_powerpc<size, big_endian>::merge_object_attributes( | |
6f3fe02b | 9891 | const Object* obj, |
724436fc AM |
9892 | const Attributes_section_data* pasd) |
9893 | { | |
9894 | // Return if there is no attributes section data. | |
9895 | if (pasd == NULL) | |
9896 | return; | |
9897 | ||
9898 | // Create output object attributes. | |
9899 | if (this->attributes_section_data_ == NULL) | |
9900 | this->attributes_section_data_ = new Attributes_section_data(NULL, 0); | |
9901 | ||
9902 | const int vendor = Object_attribute::OBJ_ATTR_GNU; | |
9903 | const Object_attribute* in_attr = pasd->known_attributes(vendor); | |
9904 | Object_attribute* out_attr | |
9905 | = this->attributes_section_data_->known_attributes(vendor); | |
9906 | ||
6f3fe02b | 9907 | const char* name = obj->name().c_str(); |
724436fc AM |
9908 | const char* err; |
9909 | const char* first; | |
9910 | const char* second; | |
9911 | int tag = elfcpp::Tag_GNU_Power_ABI_FP; | |
9912 | int in_fp = in_attr[tag].int_value() & 0xf; | |
9913 | int out_fp = out_attr[tag].int_value() & 0xf; | |
6f3fe02b | 9914 | bool warn_only = obj->is_dynamic(); |
724436fc AM |
9915 | if (in_fp != out_fp) |
9916 | { | |
9917 | err = NULL; | |
9918 | if ((in_fp & 3) == 0) | |
9919 | ; | |
9920 | else if ((out_fp & 3) == 0) | |
9921 | { | |
6f3fe02b AM |
9922 | if (!warn_only) |
9923 | { | |
9924 | out_fp |= in_fp & 3; | |
9925 | out_attr[tag].set_int_value(out_fp); | |
9926 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9927 | this->last_fp_ = name; | |
9928 | } | |
724436fc AM |
9929 | } |
9930 | else if ((out_fp & 3) != 2 && (in_fp & 3) == 2) | |
9931 | { | |
9932 | err = N_("%s uses hard float, %s uses soft float"); | |
9933 | first = this->last_fp_; | |
9934 | second = name; | |
9935 | } | |
9936 | else if ((out_fp & 3) == 2 && (in_fp & 3) != 2) | |
9937 | { | |
9938 | err = N_("%s uses hard float, %s uses soft float"); | |
9939 | first = name; | |
9940 | second = this->last_fp_; | |
9941 | } | |
9942 | else if ((out_fp & 3) == 1 && (in_fp & 3) == 3) | |
9943 | { | |
9944 | err = N_("%s uses double-precision hard float, " | |
9945 | "%s uses single-precision hard float"); | |
9946 | first = this->last_fp_; | |
9947 | second = name; | |
9948 | } | |
9949 | else if ((out_fp & 3) == 3 && (in_fp & 3) == 1) | |
9950 | { | |
9951 | err = N_("%s uses double-precision hard float, " | |
9952 | "%s uses single-precision hard float"); | |
9953 | first = name; | |
9954 | second = this->last_fp_; | |
9955 | } | |
9956 | ||
9957 | if (err || (in_fp & 0xc) == 0) | |
9958 | ; | |
9959 | else if ((out_fp & 0xc) == 0) | |
9960 | { | |
6f3fe02b AM |
9961 | if (!warn_only) |
9962 | { | |
9963 | out_fp |= in_fp & 0xc; | |
9964 | out_attr[tag].set_int_value(out_fp); | |
9965 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9966 | this->last_ld_ = name; | |
9967 | } | |
724436fc AM |
9968 | } |
9969 | else if ((out_fp & 0xc) != 2 * 4 && (in_fp & 0xc) == 2 * 4) | |
9970 | { | |
9971 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
9972 | first = name; | |
9973 | second = this->last_ld_; | |
9974 | } | |
9975 | else if ((in_fp & 0xc) != 2 * 4 && (out_fp & 0xc) == 2 * 4) | |
9976 | { | |
9977 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
9978 | first = this->last_ld_; | |
9979 | second = name; | |
9980 | } | |
9981 | else if ((out_fp & 0xc) == 1 * 4 && (in_fp & 0xc) == 3 * 4) | |
9982 | { | |
9983 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
9984 | first = this->last_ld_; | |
9985 | second = name; | |
9986 | } | |
9987 | else if ((out_fp & 0xc) == 3 * 4 && (in_fp & 0xc) == 1 * 4) | |
9988 | { | |
9989 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
9990 | first = name; | |
9991 | second = this->last_ld_; | |
9992 | } | |
9993 | ||
9994 | if (err) | |
9995 | { | |
9996 | if (parameters->options().warn_mismatch()) | |
6f3fe02b AM |
9997 | { |
9998 | if (warn_only) | |
9999 | gold_warning(_(err), first, second); | |
10000 | else | |
10001 | gold_error(_(err), first, second); | |
10002 | } | |
724436fc AM |
10003 | // Arrange for this attribute to be deleted. It's better to |
10004 | // say "don't know" about a file than to wrongly claim compliance. | |
6f3fe02b AM |
10005 | if (!warn_only) |
10006 | out_attr[tag].set_type(0); | |
724436fc AM |
10007 | } |
10008 | } | |
10009 | ||
10010 | if (size == 32) | |
10011 | { | |
10012 | tag = elfcpp::Tag_GNU_Power_ABI_Vector; | |
10013 | int in_vec = in_attr[tag].int_value() & 3; | |
10014 | int out_vec = out_attr[tag].int_value() & 3; | |
10015 | if (in_vec != out_vec) | |
10016 | { | |
10017 | err = NULL; | |
10018 | if (in_vec == 0) | |
10019 | ; | |
10020 | else if (out_vec == 0) | |
10021 | { | |
10022 | out_vec = in_vec; | |
10023 | out_attr[tag].set_int_value(out_vec); | |
10024 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10025 | this->last_vec_ = name; | |
10026 | } | |
10027 | // For now, allow generic to transition to AltiVec or SPE | |
10028 | // without a warning. If GCC marked files with their stack | |
10029 | // alignment and used don't-care markings for files which are | |
10030 | // not affected by the vector ABI, we could warn about this | |
10031 | // case too. */ | |
10032 | else if (in_vec == 1) | |
10033 | ; | |
10034 | else if (out_vec == 1) | |
10035 | { | |
10036 | out_vec = in_vec; | |
10037 | out_attr[tag].set_int_value(out_vec); | |
10038 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10039 | this->last_vec_ = name; | |
10040 | } | |
10041 | else if (out_vec < in_vec) | |
10042 | { | |
10043 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
10044 | first = this->last_vec_; | |
10045 | second = name; | |
10046 | } | |
10047 | else if (out_vec > in_vec) | |
10048 | { | |
10049 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
10050 | first = name; | |
10051 | second = this->last_vec_; | |
10052 | } | |
10053 | if (err) | |
10054 | { | |
10055 | if (parameters->options().warn_mismatch()) | |
10056 | gold_error(_(err), first, second); | |
10057 | out_attr[tag].set_type(0); | |
10058 | } | |
10059 | } | |
10060 | ||
10061 | tag = elfcpp::Tag_GNU_Power_ABI_Struct_Return; | |
10062 | int in_struct = in_attr[tag].int_value() & 3; | |
10063 | int out_struct = out_attr[tag].int_value() & 3; | |
10064 | if (in_struct != out_struct) | |
10065 | { | |
10066 | err = NULL; | |
10067 | if (in_struct == 0 || in_struct == 3) | |
10068 | ; | |
10069 | else if (out_struct == 0) | |
10070 | { | |
10071 | out_struct = in_struct; | |
10072 | out_attr[tag].set_int_value(out_struct); | |
10073 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10074 | this->last_struct_ = name; | |
10075 | } | |
10076 | else if (out_struct < in_struct) | |
10077 | { | |
10078 | err = N_("%s uses r3/r4 for small structure returns, " | |
10079 | "%s uses memory"); | |
10080 | first = this->last_struct_; | |
10081 | second = name; | |
10082 | } | |
10083 | else if (out_struct > in_struct) | |
10084 | { | |
10085 | err = N_("%s uses r3/r4 for small structure returns, " | |
10086 | "%s uses memory"); | |
10087 | first = name; | |
10088 | second = this->last_struct_; | |
10089 | } | |
10090 | if (err) | |
10091 | { | |
10092 | if (parameters->options().warn_mismatch()) | |
10093 | gold_error(_(err), first, second); | |
10094 | out_attr[tag].set_type(0); | |
10095 | } | |
10096 | } | |
10097 | } | |
10098 | ||
10099 | // Merge Tag_compatibility attributes and any common GNU ones. | |
10100 | this->attributes_section_data_->merge(name, pasd); | |
42cacb20 DE |
10101 | } |
10102 | ||
5edad15d AM |
10103 | // Emit any saved relocs, and mark toc entries using any of these |
10104 | // relocs as not optimizable. | |
aba6bc71 | 10105 | |
5edad15d AM |
10106 | template<int sh_type, int size, bool big_endian> |
10107 | void | |
10108 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
10109 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 10110 | { |
5edad15d AM |
10111 | if (size == 64 |
10112 | && parameters->options().toc_optimize()) | |
10113 | { | |
10114 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
10115 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
10116 | p != this->entries_.end(); | |
10117 | ++p) | |
10118 | { | |
10119 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
10120 | entry = *p; | |
10121 | ||
10122 | // If the symbol is no longer defined in a dynamic object, | |
10123 | // then we emitted a COPY relocation. If it is still | |
10124 | // dynamic then we'll need dynamic relocations and thus | |
10125 | // can't optimize toc entries. | |
10126 | if (entry.sym_->is_from_dynobj()) | |
10127 | { | |
10128 | Powerpc_relobj<size, big_endian>* ppc_object | |
10129 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
10130 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
10131 | ppc_object->set_no_toc_opt(entry.address_); | |
10132 | } | |
10133 | } | |
10134 | } | |
10135 | ||
10136 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
10137 | } |
10138 | ||
3ea0a085 AM |
10139 | // Return the value to use for a branch relocation. |
10140 | ||
10141 | template<int size, bool big_endian> | |
1611bc4a | 10142 | bool |
3ea0a085 | 10143 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 10144 | const Symbol_table* symtab, |
3ea0a085 AM |
10145 | const Sized_symbol<size>* gsym, |
10146 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 10147 | Address *value, |
3ea0a085 AM |
10148 | unsigned int *dest_shndx) |
10149 | { | |
9055360d AM |
10150 | if (size == 32 || this->abiversion() >= 2) |
10151 | gold_unreachable(); | |
3ea0a085 | 10152 | *dest_shndx = 0; |
3ea0a085 AM |
10153 | |
10154 | // If the symbol is defined in an opd section, ie. is a function | |
10155 | // descriptor, use the function descriptor code entry address | |
10156 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 10157 | if (gsym != NULL |
0e123f69 AM |
10158 | && (gsym->source() != Symbol::FROM_OBJECT |
10159 | || gsym->object()->is_dynamic())) | |
1611bc4a | 10160 | return true; |
3ea0a085 AM |
10161 | if (gsym != NULL) |
10162 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
10163 | unsigned int shndx = symobj->opd_shndx(); | |
10164 | if (shndx == 0) | |
1611bc4a | 10165 | return true; |
3ea0a085 | 10166 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 10167 | if (opd_addr == invalid_address) |
1611bc4a | 10168 | return true; |
c6905c28 | 10169 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 10170 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
10171 | { |
10172 | Address sec_off; | |
1611bc4a | 10173 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
10174 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
10175 | { | |
10176 | Section_id folded | |
10177 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
10178 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
10179 | *dest_shndx = folded.second; | |
10180 | } | |
3ea0a085 | 10181 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
10182 | if (sec_addr == invalid_address) |
10183 | return false; | |
10184 | ||
3ea0a085 | 10185 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 10186 | *value = sec_addr + sec_off; |
3ea0a085 | 10187 | } |
1611bc4a | 10188 | return true; |
3ea0a085 AM |
10189 | } |
10190 | ||
c9b8abb7 AM |
10191 | template<int size> |
10192 | static bool | |
10193 | relative_value_is_known(const Sized_symbol<size>* gsym) | |
10194 | { | |
10195 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
10196 | return false; | |
10197 | ||
10198 | if (gsym->is_from_dynobj() | |
10199 | || gsym->is_undefined() | |
10200 | || gsym->is_preemptible()) | |
10201 | return false; | |
10202 | ||
10203 | if (gsym->is_absolute()) | |
10204 | return !parameters->options().output_is_position_independent(); | |
10205 | ||
10206 | return true; | |
10207 | } | |
10208 | ||
10209 | template<int size> | |
10210 | static bool | |
10211 | relative_value_is_known(const Symbol_value<size>* psymval) | |
10212 | { | |
10213 | if (psymval->is_ifunc_symbol()) | |
10214 | return false; | |
10215 | ||
10216 | bool is_ordinary; | |
10217 | unsigned int shndx = psymval->input_shndx(&is_ordinary); | |
10218 | ||
10219 | return is_ordinary && shndx != elfcpp::SHN_UNDEF; | |
10220 | } | |
10221 | ||
0c951c25 AM |
10222 | // PCREL_OPT in one instance flags to the linker that a pair of insns: |
10223 | // pld ra,symbol@got@pcrel | |
10224 | // load/store rt,0(ra) | |
10225 | // or | |
10226 | // pla ra,symbol@pcrel | |
10227 | // load/store rt,0(ra) | |
10228 | // may be translated to | |
10229 | // pload/pstore rt,symbol@pcrel | |
10230 | // nop. | |
10231 | // This function returns true if the optimization is possible, placing | |
10232 | // the prefix insn in *PINSN1 and a NOP in *PINSN2. | |
10233 | // | |
10234 | // On entry to this function, the linker has already determined that | |
10235 | // the pld can be replaced with pla: *PINSN1 is that pla insn, | |
10236 | // while *PINSN2 is the second instruction. | |
10237 | ||
10238 | inline bool | |
10239 | xlate_pcrel_opt(uint64_t *pinsn1, uint64_t *pinsn2) | |
10240 | { | |
10241 | uint32_t insn2 = *pinsn2 >> 32; | |
10242 | uint64_t i1new; | |
10243 | ||
10244 | // Check that regs match. | |
10245 | if (((insn2 >> 16) & 31) != ((*pinsn1 >> 21) & 31)) | |
10246 | return false; | |
10247 | ||
10248 | switch ((insn2 >> 26) & 63) | |
10249 | { | |
10250 | default: | |
10251 | return false; | |
10252 | ||
10253 | case 32: // lwz | |
10254 | case 34: // lbz | |
10255 | case 36: // stw | |
10256 | case 38: // stb | |
10257 | case 40: // lhz | |
10258 | case 42: // lha | |
10259 | case 44: // sth | |
10260 | case 48: // lfs | |
10261 | case 50: // lfd | |
10262 | case 52: // stfs | |
10263 | case 54: // stfd | |
10264 | // These are the PMLS cases, where we just need to tack a prefix | |
10265 | // on the insn. Check that the D field is zero. | |
10266 | if ((insn2 & 0xffff) != 0) | |
10267 | return false; | |
10268 | i1new = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
10269 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
10270 | break; | |
10271 | ||
10272 | case 58: // lwa, ld | |
10273 | if ((insn2 & 0xfffd) != 0) | |
10274 | return false; | |
10275 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10276 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) | |
10277 | | (insn2 & (31ULL << 21))); | |
10278 | break; | |
10279 | ||
10280 | case 57: // lxsd, lxssp | |
10281 | if ((insn2 & 0xfffc) != 0 || (insn2 & 3) < 2) | |
10282 | return false; | |
10283 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10284 | | ((40ULL | (insn2 & 3)) << 26) | |
10285 | | (insn2 & (31ULL << 21))); | |
10286 | break; | |
10287 | ||
10288 | case 61: // stxsd, stxssp, lxv, stxv | |
10289 | if ((insn2 & 3) == 0) | |
10290 | return false; | |
10291 | else if ((insn2 & 3) >= 2) | |
10292 | { | |
10293 | if ((insn2 & 0xfffc) != 0) | |
10294 | return false; | |
10295 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10296 | | ((44ULL | (insn2 & 3)) << 26) | |
10297 | | (insn2 & (31ULL << 21))); | |
10298 | } | |
10299 | else | |
10300 | { | |
10301 | if ((insn2 & 0xfff0) != 0) | |
10302 | return false; | |
10303 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10304 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) | |
10305 | | (insn2 & (31ULL << 21))); | |
10306 | } | |
10307 | break; | |
10308 | ||
10309 | case 56: // lq | |
10310 | if ((insn2 & 0xffff) != 0) | |
10311 | return false; | |
10312 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10313 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
10314 | break; | |
10315 | ||
10316 | case 62: // std, stq | |
10317 | if ((insn2 & 0xfffd) != 0) | |
10318 | return false; | |
10319 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10320 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) | |
10321 | | (insn2 & (31ULL << 21))); | |
10322 | break; | |
10323 | } | |
10324 | ||
10325 | *pinsn1 = i1new; | |
10326 | *pinsn2 = (uint64_t) nop << 32; | |
10327 | return true; | |
10328 | } | |
10329 | ||
42cacb20 DE |
10330 | // Perform a relocation. |
10331 | ||
10332 | template<int size, bool big_endian> | |
10333 | inline bool | |
10334 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 10335 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 10336 | unsigned int, |
d83ce4e3 AM |
10337 | Target_powerpc* target, |
10338 | Output_section* os, | |
10339 | size_t relnum, | |
91a65d2f | 10340 | const unsigned char* preloc, |
d83ce4e3 AM |
10341 | const Sized_symbol<size>* gsym, |
10342 | const Symbol_value<size>* psymval, | |
10343 | unsigned char* view, | |
c9269dff AM |
10344 | Address address, |
10345 | section_size_type view_size) | |
42cacb20 | 10346 | { |
23cedd1d AM |
10347 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
10348 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; | |
10349 | typedef typename elfcpp::Rela<size, big_endian> Reltype; | |
10350 | ||
0e804863 ILT |
10351 | if (view == NULL) |
10352 | return true; | |
10353 | ||
34e0882b AM |
10354 | if (target->replace_tls_get_addr(gsym)) |
10355 | gsym = static_cast<const Sized_symbol<size>*>(target->tls_get_addr_opt()); | |
10356 | ||
91a65d2f AM |
10357 | const elfcpp::Rela<size, big_endian> rela(preloc); |
10358 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
34e0882b | 10359 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) |
dd93cd0a | 10360 | { |
e3deeb9c AM |
10361 | case Track_tls::NOT_EXPECTED: |
10362 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
10363 | _("__tls_get_addr call lacks marker reloc")); | |
10364 | break; | |
10365 | case Track_tls::EXPECTED: | |
10366 | // We have already complained. | |
10367 | break; | |
10368 | case Track_tls::SKIP: | |
23cedd1d | 10369 | if (is_plt16_reloc<size>(r_type) |
32f59844 AM |
10370 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
10371 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC) | |
23cedd1d AM |
10372 | { |
10373 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10374 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10375 | } | |
10376 | else if (size == 64 && r_type == elfcpp::R_POWERPC_PLTCALL) | |
10377 | { | |
10378 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10379 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, nop); | |
10380 | } | |
e4dff765 AM |
10381 | else if (size == 64 && (r_type == elfcpp::R_PPC64_PLT_PCREL34 |
10382 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
10383 | { | |
10384 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10385 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
10386 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
10387 | } | |
e3deeb9c AM |
10388 | return true; |
10389 | case Track_tls::NORMAL: | |
10390 | break; | |
dd93cd0a | 10391 | } |
dd93cd0a | 10392 | |
dcfc7dd4 AM |
10393 | // Offset from start of insn to d-field reloc. |
10394 | const int d_offset = big_endian ? 2 : 0; | |
10395 | ||
3ea0a085 AM |
10396 | Powerpc_relobj<size, big_endian>* const object |
10397 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 10398 | Address value = 0; |
0cfb0717 | 10399 | bool has_stub_value = false; |
7ee7ff70 | 10400 | bool localentry0 = false; |
e5d5f5ed | 10401 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
08be3224 AM |
10402 | bool has_plt_offset |
10403 | = (gsym != NULL | |
88b8e639 | 10404 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
08be3224 AM |
10405 | : object->local_has_plt_offset(r_sym)); |
10406 | if (has_plt_offset | |
4290b0ab | 10407 | && !is_got_reloc(r_type) |
08be3224 | 10408 | && !is_plt16_reloc<size>(r_type) |
e4dff765 AM |
10409 | && r_type != elfcpp::R_PPC64_PLT_PCREL34 |
10410 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
23cedd1d AM |
10411 | && r_type != elfcpp::R_POWERPC_PLTSEQ |
10412 | && r_type != elfcpp::R_POWERPC_PLTCALL | |
32f59844 AM |
10413 | && r_type != elfcpp::R_PPC64_PLTSEQ_NOTOC |
10414 | && r_type != elfcpp::R_PPC64_PLTCALL_NOTOC | |
b3ccdeb5 | 10415 | && (!psymval->is_ifunc_symbol() |
9055360d | 10416 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 10417 | { |
9055360d AM |
10418 | if (size == 64 |
10419 | && gsym != NULL | |
10420 | && target->abiversion() >= 2 | |
10421 | && !parameters->options().output_is_position_independent() | |
32f59844 | 10422 | && !is_branch_reloc<size>(r_type)) |
ec661b9d | 10423 | { |
faa2211d AM |
10424 | Address off = target->glink_section()->find_global_entry(gsym); |
10425 | if (off != invalid_address) | |
6ec65f28 AM |
10426 | { |
10427 | value = target->glink_section()->global_entry_address() + off; | |
10428 | has_stub_value = true; | |
10429 | } | |
ec661b9d | 10430 | } |
c9824451 | 10431 | else |
9055360d | 10432 | { |
64b5d6d7 AM |
10433 | Stub_table<size, big_endian>* stub_table = NULL; |
10434 | if (target->stub_tables().size() == 1) | |
10435 | stub_table = target->stub_tables()[0]; | |
10436 | if (stub_table == NULL | |
10437 | && !(size == 32 | |
10438 | && gsym != NULL | |
10439 | && !parameters->options().output_is_position_independent() | |
32f59844 | 10440 | && !is_branch_reloc<size>(r_type))) |
64b5d6d7 | 10441 | stub_table = object->stub_table(relinfo->data_shndx); |
9055360d AM |
10442 | if (stub_table == NULL) |
10443 | { | |
64b5d6d7 AM |
10444 | // This is a ref from a data section to an ifunc symbol, |
10445 | // or a non-branch reloc for which we always want to use | |
10446 | // one set of stubs for resolving function addresses. | |
9055360d AM |
10447 | if (target->stub_tables().size() != 0) |
10448 | stub_table = target->stub_tables()[0]; | |
10449 | } | |
faa2211d AM |
10450 | if (stub_table != NULL) |
10451 | { | |
7e57d19e | 10452 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 10453 | if (gsym != NULL) |
7e57d19e | 10454 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
10455 | rela.get_r_addend()); |
10456 | else | |
7e57d19e | 10457 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 10458 | rela.get_r_addend()); |
7e57d19e | 10459 | if (ent != NULL) |
faa2211d | 10460 | { |
7e57d19e AM |
10461 | value = stub_table->stub_address() + ent->off_; |
10462 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
10463 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
10464 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
afd2ea23 AM |
10465 | if (size == 64 |
10466 | && r_type != elfcpp::R_PPC64_REL24_NOTOC) | |
10467 | value += ent->tocoff_; | |
7e57d19e AM |
10468 | if (size == 64 |
10469 | && ent->r2save_ | |
a993d270 AM |
10470 | && !(gsym != NULL |
10471 | && target->is_tls_get_addr_opt(gsym))) | |
afd2ea23 | 10472 | { |
a993d270 AM |
10473 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
10474 | { | |
10475 | if (!(target->power10_stubs() | |
10476 | && target->power10_stubs_auto())) | |
10477 | value += 4; | |
10478 | } | |
10479 | else if (relnum < reloc_count - 1) | |
10480 | { | |
10481 | Reltype next_rela(preloc + reloc_size); | |
10482 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
10483 | == elfcpp::R_PPC64_TOCSAVE | |
10484 | && (next_rela.get_r_offset() | |
10485 | == rela.get_r_offset() + 4)) | |
10486 | value += 4; | |
10487 | } | |
7e57d19e | 10488 | } |
7ee7ff70 | 10489 | localentry0 = ent->localentry0_; |
faa2211d AM |
10490 | has_stub_value = true; |
10491 | } | |
10492 | } | |
9055360d | 10493 | } |
faa2211d AM |
10494 | // We don't care too much about bogus debug references to |
10495 | // non-local functions, but otherwise there had better be a plt | |
10496 | // call stub or global entry stub as appropriate. | |
10497 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 10498 | } |
cf43a2fe | 10499 | |
e4dff765 AM |
10500 | if (has_plt_offset && (is_plt16_reloc<size>(r_type) |
10501 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
10502 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
08be3224 AM |
10503 | { |
10504 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
10505 | if (gsym) | |
10506 | value = target->plt_off(gsym, &plt); | |
10507 | else | |
10508 | value = target->plt_off(object, r_sym, &plt); | |
10509 | value += plt->address(); | |
10510 | ||
10511 | if (size == 64) | |
e4dff765 AM |
10512 | { |
10513 | if (r_type != elfcpp::R_PPC64_PLT_PCREL34 | |
10514 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC) | |
10515 | value -= (target->got_section()->output_section()->address() | |
10516 | + object->toc_base_offset()); | |
10517 | } | |
08be3224 AM |
10518 | else if (parameters->options().output_is_position_independent()) |
10519 | { | |
10520 | if (rela.get_r_addend() >= 32768) | |
10521 | { | |
10522 | unsigned int got2 = object->got2_shndx(); | |
10523 | value -= (object->get_output_section_offset(got2) | |
10524 | + object->output_section(got2)->address() | |
10525 | + rela.get_r_addend()); | |
10526 | } | |
10527 | else | |
10528 | value -= (target->got_section()->address() | |
10529 | + target->got_section()->g_o_t()); | |
10530 | } | |
10531 | } | |
23cedd1d AM |
10532 | else if (!has_plt_offset |
10533 | && (is_plt16_reloc<size>(r_type) | |
32f59844 AM |
10534 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
10535 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
10536 | { |
10537 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10538 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10539 | r_type = elfcpp::R_POWERPC_NONE; | |
10540 | } | |
e4dff765 AM |
10541 | else if (!has_plt_offset |
10542 | && (r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
10543 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
10544 | { | |
10545 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10546 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
10547 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
10548 | r_type = elfcpp::R_POWERPC_NONE; | |
10549 | } | |
4290b0ab | 10550 | else if (is_got_reloc(r_type)) |
42cacb20 | 10551 | { |
cf43a2fe AM |
10552 | if (gsym != NULL) |
10553 | { | |
10554 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
10555 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
10556 | } | |
10557 | else | |
10558 | { | |
cf43a2fe AM |
10559 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
10560 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
10561 | } | |
e4dff765 AM |
10562 | if (r_type == elfcpp::R_PPC64_GOT_PCREL34) |
10563 | value += target->got_section()->address(); | |
10564 | else | |
10565 | value -= target->got_section()->got_base_offset(object); | |
cf43a2fe AM |
10566 | } |
10567 | else if (r_type == elfcpp::R_PPC64_TOC) | |
10568 | { | |
c9269dff | 10569 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 10570 | + object->toc_base_offset()); |
cf43a2fe AM |
10571 | } |
10572 | else if (gsym != NULL | |
10573 | && (r_type == elfcpp::R_POWERPC_REL24 | |
10574 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 10575 | && has_stub_value) |
cf43a2fe | 10576 | { |
c9269dff AM |
10577 | if (size == 64) |
10578 | { | |
10579 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
10580 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
34e0882b AM |
10581 | bool can_plt_call = localentry0 || target->is_tls_get_addr_opt(gsym); |
10582 | if (!can_plt_call && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 10583 | { |
3ea0a085 | 10584 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 10585 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
10586 | if ((insn & 1) != 0 |
10587 | && (insn2 == nop | |
10588 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 10589 | { |
b4f7960d AM |
10590 | elfcpp::Swap<32, big_endian>:: |
10591 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
10592 | can_plt_call = true; |
10593 | } | |
10594 | } | |
10595 | if (!can_plt_call) | |
3ea0a085 AM |
10596 | { |
10597 | // If we don't have a branch and link followed by a nop, | |
10598 | // we can't go via the plt because there is no place to | |
10599 | // put a toc restoring instruction. | |
10600 | // Unless we know we won't be returning. | |
10601 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
10602 | can_plt_call = true; | |
10603 | } | |
10604 | if (!can_plt_call) | |
10605 | { | |
ba8ca3e7 AM |
10606 | // g++ as of 20130507 emits self-calls without a |
10607 | // following nop. This is arguably wrong since we have | |
10608 | // conflicting information. On the one hand a global | |
10609 | // symbol and on the other a local call sequence, but | |
10610 | // don't error for this special case. | |
10611 | // It isn't possible to cheaply verify we have exactly | |
10612 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 10613 | bool ok = false; |
c9824451 | 10614 | Address code = value; |
3ea0a085 AM |
10615 | if (gsym->source() == Symbol::FROM_OBJECT |
10616 | && gsym->object() == object) | |
10617 | { | |
9055360d AM |
10618 | unsigned int dest_shndx = 0; |
10619 | if (target->abiversion() < 2) | |
10620 | { | |
10621 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
10622 | code = psymval->value(object, addend); |
10623 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
10624 | &code, &dest_shndx); | |
9055360d | 10625 | } |
3ea0a085 AM |
10626 | bool is_ordinary; |
10627 | if (dest_shndx == 0) | |
10628 | dest_shndx = gsym->shndx(&is_ordinary); | |
10629 | ok = dest_shndx == relinfo->data_shndx; | |
10630 | } | |
10631 | if (!ok) | |
c9824451 AM |
10632 | { |
10633 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
10634 | _("call lacks nop, can't restore toc; " | |
10635 | "recompile with -fPIC")); | |
10636 | value = code; | |
10637 | } | |
3ea0a085 | 10638 | } |
c9269dff | 10639 | } |
cf43a2fe | 10640 | } |
dd93cd0a AM |
10641 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
10642 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
10643 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
89c52ae3 | 10644 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA |
87c69f97 | 10645 | || r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a AM |
10646 | { |
10647 | // First instruction of a global dynamic sequence, arg setup insn. | |
10648 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10649 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
10650 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
10651 | if (tls_type == tls::TLSOPT_NONE) | |
10652 | got_type = GOT_TYPE_TLSGD; | |
10653 | else if (tls_type == tls::TLSOPT_TO_IE) | |
10654 | got_type = GOT_TYPE_TPREL; | |
10655 | if (got_type != GOT_TYPE_STANDARD) | |
10656 | { | |
10657 | if (gsym != NULL) | |
10658 | { | |
10659 | gold_assert(gsym->has_got_offset(got_type)); | |
10660 | value = gsym->got_offset(got_type); | |
10661 | } | |
10662 | else | |
10663 | { | |
dd93cd0a AM |
10664 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
10665 | value = object->local_got_offset(r_sym, got_type); | |
10666 | } | |
87c69f97 | 10667 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
89c52ae3 AM |
10668 | value += target->got_section()->address(); |
10669 | else | |
10670 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10671 | } |
10672 | if (tls_type == tls::TLSOPT_TO_IE) | |
10673 | { | |
87c69f97 | 10674 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a | 10675 | { |
89c52ae3 AM |
10676 | Insn* iview = reinterpret_cast<Insn*>(view); |
10677 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10678 | pinsn <<= 32; | |
10679 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10680 | // pla -> pld | |
10681 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
10682 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10683 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10684 | pinsn & 0xffffffff); | |
87c69f97 | 10685 | r_type = elfcpp::R_PPC64_GOT_TPREL_PCREL34; |
89c52ae3 AM |
10686 | } |
10687 | else | |
10688 | { | |
10689 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10690 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10691 | { | |
10692 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10693 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10694 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
10695 | if (size == 32) | |
10696 | insn |= 32 << 26; // lwz | |
10697 | else | |
10698 | insn |= 58 << 26; // ld | |
10699 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10700 | } | |
10701 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
10702 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
dd93cd0a | 10703 | } |
dd93cd0a AM |
10704 | } |
10705 | else if (tls_type == tls::TLSOPT_TO_LE) | |
10706 | { | |
87c69f97 | 10707 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a | 10708 | { |
89c52ae3 AM |
10709 | Insn* iview = reinterpret_cast<Insn*>(view); |
10710 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10711 | pinsn <<= 32; | |
10712 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10713 | // pla pcrel -> paddi r13 | |
10714 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
10715 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10716 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10717 | pinsn & 0xffffffff); | |
10718 | r_type = elfcpp::R_PPC64_TPREL34; | |
dd93cd0a AM |
10719 | value = psymval->value(object, rela.get_r_addend()); |
10720 | } | |
10721 | else | |
10722 | { | |
89c52ae3 AM |
10723 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
10724 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10725 | { | |
10726 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10727 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10728 | insn &= (1 << 26) - (1 << 21); // extract rt | |
10729 | if (size == 32) | |
10730 | insn |= addis_0_2; | |
10731 | else | |
10732 | insn |= addis_0_13; | |
10733 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10734 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10735 | value = psymval->value(object, rela.get_r_addend()); | |
10736 | } | |
10737 | else | |
10738 | { | |
10739 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10740 | Insn insn = nop; | |
10741 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10742 | r_type = elfcpp::R_POWERPC_NONE; | |
10743 | } | |
dd93cd0a AM |
10744 | } |
10745 | } | |
10746 | } | |
10747 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10748 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
10749 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
89c52ae3 | 10750 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA |
87c69f97 | 10751 | || r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
dd93cd0a AM |
10752 | { |
10753 | // First instruction of a local dynamic sequence, arg setup insn. | |
10754 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
10755 | if (tls_type == tls::TLSOPT_NONE) | |
10756 | { | |
10757 | value = target->tlsld_got_offset(); | |
87c69f97 | 10758 | if (r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
89c52ae3 AM |
10759 | value += target->got_section()->address(); |
10760 | else | |
10761 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10762 | } |
10763 | else | |
10764 | { | |
10765 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
87c69f97 | 10766 | if (r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
89c52ae3 AM |
10767 | { |
10768 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10769 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10770 | pinsn <<= 32; | |
10771 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10772 | // pla pcrel -> paddi r13 | |
10773 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
10774 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10775 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10776 | pinsn & 0xffffffff); | |
10777 | r_type = elfcpp::R_PPC64_TPREL34; | |
10778 | value = dtp_offset; | |
10779 | } | |
10780 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10781 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
dd93cd0a | 10782 | { |
dcfc7dd4 | 10783 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
10784 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10785 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 10786 | if (size == 32) |
0f81d3f0 AM |
10787 | insn |= addis_0_2; |
10788 | else | |
10789 | insn |= addis_0_13; | |
dd93cd0a AM |
10790 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
10791 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 10792 | value = dtp_offset; |
dd93cd0a AM |
10793 | } |
10794 | else | |
10795 | { | |
dcfc7dd4 | 10796 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10797 | Insn insn = nop; |
10798 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10799 | r_type = elfcpp::R_POWERPC_NONE; | |
10800 | } | |
10801 | } | |
10802 | } | |
10803 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
10804 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
10805 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
89c52ae3 | 10806 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA |
87c69f97 | 10807 | || r_type == elfcpp::R_PPC64_GOT_DTPREL_PCREL34) |
dd93cd0a AM |
10808 | { |
10809 | // Accesses relative to a local dynamic sequence address, | |
10810 | // no optimisation here. | |
10811 | if (gsym != NULL) | |
10812 | { | |
10813 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
10814 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
10815 | } | |
10816 | else | |
10817 | { | |
dd93cd0a AM |
10818 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
10819 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
10820 | } | |
87c69f97 | 10821 | if (r_type == elfcpp::R_PPC64_GOT_DTPREL_PCREL34) |
89c52ae3 AM |
10822 | value += target->got_section()->address(); |
10823 | else | |
10824 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10825 | } |
10826 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10827 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
10828 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
89c52ae3 | 10829 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA |
87c69f97 | 10830 | || r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
dd93cd0a AM |
10831 | { |
10832 | // First instruction of initial exec sequence. | |
10833 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10834 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
10835 | if (tls_type == tls::TLSOPT_NONE) | |
10836 | { | |
10837 | if (gsym != NULL) | |
10838 | { | |
10839 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
10840 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
10841 | } | |
10842 | else | |
10843 | { | |
dd93cd0a AM |
10844 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
10845 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
10846 | } | |
87c69f97 | 10847 | if (r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
89c52ae3 AM |
10848 | value += target->got_section()->address(); |
10849 | else | |
10850 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10851 | } |
10852 | else | |
10853 | { | |
10854 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
87c69f97 | 10855 | if (r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
89c52ae3 AM |
10856 | { |
10857 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10858 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10859 | pinsn <<= 32; | |
10860 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10861 | // pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel | |
10862 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
10863 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
10864 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10865 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10866 | pinsn & 0xffffffff); | |
10867 | r_type = elfcpp::R_PPC64_TPREL34; | |
10868 | value = psymval->value(object, rela.get_r_addend()); | |
10869 | } | |
10870 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10871 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
dd93cd0a | 10872 | { |
dcfc7dd4 | 10873 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10874 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10875 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
10876 | if (size == 32) | |
10877 | insn |= addis_0_2; | |
10878 | else | |
10879 | insn |= addis_0_13; | |
10880 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10881 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10882 | value = psymval->value(object, rela.get_r_addend()); | |
10883 | } | |
10884 | else | |
10885 | { | |
dcfc7dd4 | 10886 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10887 | Insn insn = nop; |
10888 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10889 | r_type = elfcpp::R_POWERPC_NONE; | |
10890 | } | |
10891 | } | |
10892 | } | |
10893 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
10894 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
10895 | { | |
10896 | // Second instruction of a global dynamic sequence, | |
10897 | // the __tls_get_addr call | |
e3deeb9c | 10898 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
10899 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
10900 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
10901 | if (tls_type != tls::TLSOPT_NONE) | |
10902 | { | |
10903 | if (tls_type == tls::TLSOPT_TO_IE) | |
10904 | { | |
10905 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10906 | Insn insn = add_3_3_13; | |
10907 | if (size == 32) | |
10908 | insn = add_3_3_2; | |
10909 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10910 | r_type = elfcpp::R_POWERPC_NONE; | |
10911 | } | |
10912 | else | |
10913 | { | |
89c52ae3 AM |
10914 | bool is_pcrel = false; |
10915 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
10916 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
10917 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
10918 | if (relnum < reloc_count - 1) | |
10919 | { | |
10920 | Reltype next_rela(preloc + reloc_size); | |
10921 | unsigned int r_type2 | |
10922 | = elfcpp::elf_r_type<size>(next_rela.get_r_info()); | |
10923 | if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC | |
10924 | || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
10925 | && next_rela.get_r_offset() == rela.get_r_offset()) | |
10926 | is_pcrel = true; | |
10927 | } | |
dd93cd0a | 10928 | Insn* iview = reinterpret_cast<Insn*>(view); |
89c52ae3 AM |
10929 | if (is_pcrel) |
10930 | { | |
10931 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10932 | r_type = elfcpp::R_POWERPC_NONE; | |
10933 | } | |
10934 | else | |
10935 | { | |
10936 | elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); | |
10937 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
10938 | view += d_offset; | |
10939 | value = psymval->value(object, rela.get_r_addend()); | |
10940 | } | |
dd93cd0a | 10941 | } |
e3deeb9c | 10942 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
10943 | } |
10944 | } | |
10945 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
10946 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
10947 | { | |
10948 | // Second instruction of a local dynamic sequence, | |
10949 | // the __tls_get_addr call | |
e3deeb9c | 10950 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
10951 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
10952 | if (tls_type == tls::TLSOPT_TO_LE) | |
10953 | { | |
89c52ae3 AM |
10954 | bool is_pcrel = false; |
10955 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
10956 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
10957 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
10958 | if (relnum < reloc_count - 1) | |
10959 | { | |
10960 | Reltype next_rela(preloc + reloc_size); | |
10961 | unsigned int r_type2 | |
10962 | = elfcpp::elf_r_type<size>(next_rela.get_r_info()); | |
10963 | if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC | |
10964 | || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
10965 | && next_rela.get_r_offset() == rela.get_r_offset()) | |
10966 | is_pcrel = true; | |
10967 | } | |
dd93cd0a | 10968 | Insn* iview = reinterpret_cast<Insn*>(view); |
89c52ae3 AM |
10969 | if (is_pcrel) |
10970 | { | |
10971 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10972 | r_type = elfcpp::R_POWERPC_NONE; | |
10973 | } | |
10974 | else | |
10975 | { | |
10976 | elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); | |
10977 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
10978 | view += d_offset; | |
10979 | value = dtp_offset; | |
10980 | } | |
e3deeb9c | 10981 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
10982 | } |
10983 | } | |
10984 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
10985 | { | |
10986 | // Second instruction of an initial exec sequence | |
10987 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10988 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
10989 | if (tls_type == tls::TLSOPT_TO_LE) | |
10990 | { | |
89c52ae3 AM |
10991 | Address roff = rela.get_r_offset() & 3; |
10992 | Insn* iview = reinterpret_cast<Insn*>(view - roff); | |
dd93cd0a AM |
10993 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10994 | unsigned int reg = size == 32 ? 2 : 13; | |
10995 | insn = at_tls_transform(insn, reg); | |
10996 | gold_assert(insn != 0); | |
89c52ae3 AM |
10997 | if (roff == 0) |
10998 | { | |
10999 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11000 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
11001 | view += d_offset; | |
11002 | value = psymval->value(object, rela.get_r_addend()); | |
11003 | } | |
11004 | else if (roff == 1) | |
11005 | { | |
11006 | // For pcrel IE to LE we already have the full offset | |
11007 | // and thus don't need an addi here. A nop or mr will do. | |
11008 | if ((insn & (0x3f << 26)) == 14 << 26) | |
11009 | { | |
11010 | // Extract regs from addi rt,ra,si. | |
11011 | unsigned int rt = (insn >> 21) & 0x1f; | |
11012 | unsigned int ra = (insn >> 16) & 0x1f; | |
11013 | if (rt == ra) | |
11014 | insn = nop; | |
11015 | else | |
11016 | { | |
11017 | // Build or ra,rs,rb with rb==rs, ie. mr ra,rs. | |
11018 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
11019 | insn |= (31u << 26) | (444u << 1); | |
11020 | } | |
11021 | } | |
11022 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11023 | r_type = elfcpp::R_POWERPC_NONE; | |
11024 | } | |
dd93cd0a AM |
11025 | } |
11026 | } | |
0cfb0717 | 11027 | else if (!has_stub_value) |
cf43a2fe | 11028 | { |
32f59844 AM |
11029 | if (!has_plt_offset && (r_type == elfcpp::R_POWERPC_PLTCALL |
11030 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC)) | |
23cedd1d AM |
11031 | { |
11032 | // PLTCALL without plt entry => convert to direct call | |
11033 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11034 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11035 | insn = (insn & 1) | b; | |
11036 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11037 | if (size == 32) | |
11038 | r_type = elfcpp::R_PPC_PLTREL24; | |
32f59844 AM |
11039 | else if (r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) |
11040 | r_type = elfcpp::R_PPC64_REL24_NOTOC; | |
23cedd1d AM |
11041 | else |
11042 | r_type = elfcpp::R_POWERPC_REL24; | |
11043 | } | |
dd93cd0a | 11044 | Address addend = 0; |
08be3224 AM |
11045 | if (!(size == 32 |
11046 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
11047 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
11048 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
11049 | || r_type == elfcpp::R_POWERPC_PLT16_HA))) | |
cf43a2fe | 11050 | addend = rela.get_r_addend(); |
c9824451 | 11051 | value = psymval->value(object, addend); |
fa40fbe4 | 11052 | unsigned int local_ent = 0; |
32f59844 | 11053 | if (size == 64 && is_branch_reloc<size>(r_type)) |
9055360d AM |
11054 | { |
11055 | if (target->abiversion() >= 2) | |
11056 | { | |
11057 | if (gsym != NULL) | |
fa40fbe4 | 11058 | local_ent = object->ppc64_local_entry_offset(gsym); |
9055360d | 11059 | else |
fa40fbe4 | 11060 | local_ent = object->ppc64_local_entry_offset(r_sym); |
9055360d AM |
11061 | } |
11062 | else | |
1611bc4a AM |
11063 | { |
11064 | unsigned int dest_shndx; | |
11065 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
11066 | &value, &dest_shndx); | |
11067 | } | |
9055360d | 11068 | } |
fa40fbe4 AM |
11069 | Address max_branch = max_branch_delta<size>(r_type); |
11070 | if (max_branch != 0 | |
11071 | && (value + local_ent - address + max_branch >= 2 * max_branch | |
32f59844 AM |
11072 | || (size == 64 |
11073 | && r_type == elfcpp::R_PPC64_REL24_NOTOC | |
11074 | && (gsym != NULL | |
11075 | ? object->ppc64_needs_toc(gsym) | |
11076 | : object->ppc64_needs_toc(r_sym))))) | |
ec661b9d AM |
11077 | { |
11078 | Stub_table<size, big_endian>* stub_table | |
11079 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
11080 | if (stub_table != NULL) |
11081 | { | |
32f59844 AM |
11082 | const typename Stub_table<size, big_endian>::Branch_stub_ent* ent |
11083 | = stub_table->find_long_branch_entry(object, value); | |
11084 | if (ent != NULL) | |
0cfb0717 | 11085 | { |
32f59844 AM |
11086 | if (ent->save_res_) |
11087 | value = (value - target->savres_section()->address() | |
11088 | + stub_table->branch_size()); | |
11089 | else | |
afd2ea23 AM |
11090 | { |
11091 | value = (stub_table->stub_address() | |
11092 | + stub_table->plt_size() | |
11093 | + ent->off_); | |
11094 | if (size == 64 | |
11095 | && r_type != elfcpp::R_PPC64_REL24_NOTOC) | |
f1e05b19 | 11096 | value += ent->tocoff_; |
afd2ea23 | 11097 | } |
0cfb0717 AM |
11098 | has_stub_value = true; |
11099 | } | |
0cfdc767 | 11100 | } |
ec661b9d | 11101 | } |
fa40fbe4 AM |
11102 | if (!has_stub_value) |
11103 | value += local_ent; | |
42cacb20 DE |
11104 | } |
11105 | ||
42cacb20 DE |
11106 | switch (r_type) |
11107 | { | |
32f59844 AM |
11108 | case elfcpp::R_PPC64_REL24_NOTOC: |
11109 | if (size == 32) | |
11110 | break; | |
11111 | // Fall through. | |
dd93cd0a AM |
11112 | case elfcpp::R_PPC64_REL64: |
11113 | case elfcpp::R_POWERPC_REL32: | |
11114 | case elfcpp::R_POWERPC_REL24: | |
11115 | case elfcpp::R_PPC_PLTREL24: | |
11116 | case elfcpp::R_PPC_LOCAL24PC: | |
11117 | case elfcpp::R_POWERPC_REL16: | |
11118 | case elfcpp::R_POWERPC_REL16_LO: | |
11119 | case elfcpp::R_POWERPC_REL16_HI: | |
11120 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 11121 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
11122 | case elfcpp::R_PPC64_REL16_HIGH: |
11123 | case elfcpp::R_PPC64_REL16_HIGHA: | |
11124 | case elfcpp::R_PPC64_REL16_HIGHER: | |
11125 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
11126 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
11127 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a AM |
11128 | case elfcpp::R_POWERPC_REL14: |
11129 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11130 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
11131 | case elfcpp::R_PPC64_PCREL34: |
11132 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11133 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11134 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
11135 | case elfcpp::R_PPC64_PCREL28: | |
87c69f97 AM |
11136 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
11137 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
11138 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
11139 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
e4dff765 AM |
11140 | case elfcpp::R_PPC64_REL16_HIGHER34: |
11141 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
11142 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
11143 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
dd93cd0a AM |
11144 | value -= address; |
11145 | break; | |
11146 | ||
42cacb20 DE |
11147 | case elfcpp::R_PPC64_TOC16: |
11148 | case elfcpp::R_PPC64_TOC16_LO: | |
11149 | case elfcpp::R_PPC64_TOC16_HI: | |
11150 | case elfcpp::R_PPC64_TOC16_HA: | |
11151 | case elfcpp::R_PPC64_TOC16_DS: | |
11152 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 11153 | // Subtract the TOC base address. |
c9269dff | 11154 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 11155 | + object->toc_base_offset()); |
42cacb20 DE |
11156 | break; |
11157 | ||
cf43a2fe AM |
11158 | case elfcpp::R_POWERPC_SECTOFF: |
11159 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
11160 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
11161 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
11162 | case elfcpp::R_PPC64_SECTOFF_DS: | |
11163 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
11164 | if (os != NULL) | |
11165 | value -= os->address(); | |
42cacb20 DE |
11166 | break; |
11167 | ||
dd93cd0a AM |
11168 | case elfcpp::R_PPC64_TPREL16_DS: |
11169 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
11170 | case elfcpp::R_PPC64_TPREL16_HIGH: |
11171 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 11172 | if (size != 64) |
f9c6b907 | 11173 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 11174 | break; |
d8e90251 | 11175 | // Fall through. |
dd93cd0a AM |
11176 | case elfcpp::R_POWERPC_TPREL16: |
11177 | case elfcpp::R_POWERPC_TPREL16_LO: | |
11178 | case elfcpp::R_POWERPC_TPREL16_HI: | |
11179 | case elfcpp::R_POWERPC_TPREL16_HA: | |
11180 | case elfcpp::R_POWERPC_TPREL: | |
11181 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
11182 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
11183 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
11184 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
89c52ae3 | 11185 | case elfcpp::R_PPC64_TPREL34: |
dd93cd0a AM |
11186 | // tls symbol values are relative to tls_segment()->vaddr() |
11187 | value -= tp_offset; | |
11188 | break; | |
11189 | ||
11190 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11191 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
11192 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
11193 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
11194 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
11195 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
11196 | if (size != 64) | |
11197 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
11198 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
11199 | break; | |
d8e90251 | 11200 | // Fall through. |
dd93cd0a AM |
11201 | case elfcpp::R_POWERPC_DTPREL16: |
11202 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
11203 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11204 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11205 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
11206 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
11207 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
89c52ae3 | 11208 | case elfcpp::R_PPC64_DTPREL34: |
dd93cd0a AM |
11209 | // tls symbol values are relative to tls_segment()->vaddr() |
11210 | value -= dtp_offset; | |
11211 | break; | |
11212 | ||
45965137 AM |
11213 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
11214 | if (gsym != NULL) | |
11215 | value += object->ppc64_local_entry_offset(gsym); | |
11216 | else | |
11217 | value += object->ppc64_local_entry_offset(r_sym); | |
11218 | break; | |
11219 | ||
42cacb20 DE |
11220 | default: |
11221 | break; | |
11222 | } | |
11223 | ||
dd93cd0a | 11224 | Insn branch_bit = 0; |
42cacb20 DE |
11225 | switch (r_type) |
11226 | { | |
dd93cd0a AM |
11227 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
11228 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11229 | branch_bit = 1 << 21; | |
d8e90251 | 11230 | // Fall through. |
dd93cd0a AM |
11231 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
11232 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
11233 | { | |
11234 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11235 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11236 | insn &= ~(1 << 21); | |
11237 | insn |= branch_bit; | |
11238 | if (this->is_isa_v2) | |
11239 | { | |
11240 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
11241 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
11242 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
11243 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
11244 | insn |= 0x02 << 21; | |
11245 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
11246 | insn |= 0x08 << 21; | |
11247 | else | |
11248 | break; | |
11249 | } | |
11250 | else | |
11251 | { | |
11252 | // Invert 'y' bit if not the default. | |
11253 | if (static_cast<Signed_address>(value) < 0) | |
11254 | insn ^= 1 << 21; | |
11255 | } | |
11256 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11257 | } | |
11258 | break; | |
11259 | ||
08be3224 AM |
11260 | case elfcpp::R_POWERPC_PLT16_HA: |
11261 | if (size == 32 | |
11262 | && !parameters->options().output_is_position_independent()) | |
11263 | { | |
11264 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
11265 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11266 | ||
11267 | // Convert addis to lis. | |
11268 | if ((insn & (0x3f << 26)) == 15u << 26 | |
11269 | && (insn & (0x1f << 16)) != 0) | |
11270 | { | |
11271 | insn &= ~(0x1f << 16); | |
11272 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11273 | } | |
11274 | } | |
11275 | break; | |
11276 | ||
dd93cd0a AM |
11277 | default: |
11278 | break; | |
11279 | } | |
11280 | ||
252dcdf4 AM |
11281 | if (gsym |
11282 | ? relative_value_is_known(gsym) | |
11283 | : relative_value_is_known(psymval)) | |
aba6bc71 | 11284 | { |
0c951c25 AM |
11285 | Insn* iview; |
11286 | Insn* iview2; | |
11287 | Insn insn; | |
11288 | uint64_t pinsn, pinsn2; | |
11289 | ||
aba6bc71 AM |
11290 | switch (r_type) |
11291 | { | |
11292 | default: | |
11293 | break; | |
11294 | ||
5edad15d AM |
11295 | // Multi-instruction sequences that access the GOT/TOC can |
11296 | // be optimized, eg. | |
11297 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
11298 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
11299 | // and | |
11300 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
11301 | // to nop; addi rb,r2,x@toc; | |
aba6bc71 AM |
11302 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
11303 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11304 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11305 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11306 | case elfcpp::R_POWERPC_GOT16_HA: | |
11307 | case elfcpp::R_PPC64_TOC16_HA: | |
252dcdf4 | 11308 | if (size == 64 && parameters->options().toc_optimize()) |
aba6bc71 | 11309 | { |
0c951c25 AM |
11310 | iview = reinterpret_cast<Insn*>(view - d_offset); |
11311 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
c9b8abb7 AM |
11312 | if ((r_type == elfcpp::R_PPC64_TOC16_HA |
11313 | && object->make_toc_relative(target, &value)) | |
11314 | || (r_type == elfcpp::R_POWERPC_GOT16_HA | |
11315 | && object->make_got_relative(target, psymval, | |
11316 | rela.get_r_addend(), | |
11317 | &value))) | |
5edad15d AM |
11318 | { |
11319 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
11320 | == ((15u << 26) | (2 << 16))); | |
11321 | } | |
11322 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
11323 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
11324 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
11325 | { |
11326 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
11327 | return true; | |
11328 | } | |
11329 | } | |
11330 | break; | |
11331 | ||
11332 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
11333 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
11334 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
11335 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
11336 | case elfcpp::R_POWERPC_GOT16_LO: | |
11337 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
11338 | case elfcpp::R_PPC64_TOC16_LO: | |
11339 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
252dcdf4 | 11340 | if (size == 64 && parameters->options().toc_optimize()) |
aba6bc71 | 11341 | { |
0c951c25 AM |
11342 | iview = reinterpret_cast<Insn*>(view - d_offset); |
11343 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
5edad15d | 11344 | bool changed = false; |
c9b8abb7 AM |
11345 | if ((r_type == elfcpp::R_PPC64_TOC16_LO_DS |
11346 | && object->make_toc_relative(target, &value)) | |
11347 | || (r_type == elfcpp::R_PPC64_GOT16_LO_DS | |
11348 | && object->make_got_relative(target, psymval, | |
11349 | rela.get_r_addend(), | |
11350 | &value))) | |
5edad15d AM |
11351 | { |
11352 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
11353 | insn ^= (14u << 26) ^ (58u << 26); | |
11354 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
11355 | changed = true; | |
11356 | } | |
11357 | if (ok_lo_toc_insn(insn, r_type) | |
11358 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
11359 | { |
11360 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
11361 | { | |
11362 | // Transform addic to addi when we change reg. | |
11363 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
11364 | insn |= (14u << 26) | (2 << 16); | |
11365 | } | |
11366 | else | |
11367 | { | |
11368 | insn &= ~(0x1f << 16); | |
11369 | insn |= 2 << 16; | |
11370 | } | |
5edad15d | 11371 | changed = true; |
aba6bc71 | 11372 | } |
5edad15d AM |
11373 | if (changed) |
11374 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
11375 | } |
11376 | break; | |
549dba71 | 11377 | |
c9b8abb7 | 11378 | case elfcpp::R_PPC64_GOT_PCREL34: |
252dcdf4 | 11379 | if (size == 64 && parameters->options().toc_optimize()) |
c9b8abb7 | 11380 | { |
0c951c25 AM |
11381 | iview = reinterpret_cast<Insn*>(view); |
11382 | pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11383 | pinsn <<= 32; | |
11384 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11385 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
c9b8abb7 AM |
11386 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) |
11387 | break; | |
11388 | ||
11389 | Address relval = psymval->value(object, rela.get_r_addend()); | |
11390 | relval -= address; | |
11391 | if (relval + (1ULL << 33) < 1ULL << 34) | |
11392 | { | |
11393 | value = relval; | |
11394 | // Replace with paddi | |
0c951c25 AM |
11395 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); |
11396 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
c9b8abb7 | 11397 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, |
0c951c25 AM |
11398 | pinsn & 0xffffffff); |
11399 | goto pcrelopt; | |
c9b8abb7 AM |
11400 | } |
11401 | } | |
11402 | break; | |
11403 | ||
0c951c25 | 11404 | case elfcpp::R_PPC64_PCREL34: |
252dcdf4 AM |
11405 | if (size == 64) |
11406 | { | |
11407 | iview = reinterpret_cast<Insn*>(view); | |
11408 | pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11409 | pinsn <<= 32; | |
11410 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11411 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
11412 | != ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
11413 | | (14ULL << 26) /* paddi */)) | |
11414 | break; | |
0c951c25 | 11415 | |
252dcdf4 AM |
11416 | pcrelopt: |
11417 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
11418 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
11419 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
11420 | if (relnum >= reloc_count - 1) | |
11421 | break; | |
0c951c25 | 11422 | |
252dcdf4 AM |
11423 | Reltype next_rela(preloc + reloc_size); |
11424 | if ((elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
11425 | != elfcpp::R_PPC64_PCREL_OPT) | |
11426 | || next_rela.get_r_offset() != rela.get_r_offset()) | |
11427 | break; | |
0c951c25 | 11428 | |
252dcdf4 AM |
11429 | Address off = next_rela.get_r_addend(); |
11430 | if (off == 0) | |
11431 | off = 8; // zero means next insn. | |
11432 | if (off + rela.get_r_offset() + 4 > view_size) | |
11433 | break; | |
0c951c25 | 11434 | |
252dcdf4 AM |
11435 | iview2 = reinterpret_cast<Insn*>(view + off); |
11436 | pinsn2 = elfcpp::Swap<32, big_endian>::readval(iview2); | |
11437 | pinsn2 <<= 32; | |
11438 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
11439 | break; | |
11440 | if (xlate_pcrel_opt(&pinsn, &pinsn2)) | |
11441 | { | |
11442 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
11443 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
11444 | pinsn & 0xffffffff); | |
11445 | elfcpp::Swap<32, big_endian>::writeval(iview2, pinsn2 >> 32); | |
11446 | } | |
11447 | } | |
0c951c25 AM |
11448 | break; |
11449 | ||
9a23f96e | 11450 | case elfcpp::R_POWERPC_TPREL16_HA: |
252dcdf4 | 11451 | if (target->tprel_opt() && value + 0x8000 < 0x10000) |
9a23f96e AM |
11452 | { |
11453 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
252dcdf4 AM |
11454 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); |
11455 | return true; | |
9a23f96e AM |
11456 | } |
11457 | break; | |
11458 | ||
11459 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
11460 | if (size == 32) | |
11461 | // R_PPC_TLSGD, R_PPC_TLSLD | |
11462 | break; | |
11463 | // Fall through. | |
11464 | case elfcpp::R_POWERPC_TPREL16_LO: | |
252dcdf4 | 11465 | if (target->tprel_opt() && value + 0x8000 < 0x10000) |
9a23f96e AM |
11466 | { |
11467 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
11468 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11469 | insn &= ~(0x1f << 16); | |
11470 | insn |= (size == 32 ? 2 : 13) << 16; | |
11471 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11472 | } | |
11473 | break; | |
11474 | ||
549dba71 | 11475 | case elfcpp::R_PPC64_ENTRY: |
252dcdf4 | 11476 | if (size == 64) |
549dba71 | 11477 | { |
252dcdf4 AM |
11478 | value = (target->got_section()->output_section()->address() |
11479 | + object->toc_base_offset()); | |
11480 | if (value + 0x80008000 <= 0xffffffff | |
11481 | && !parameters->options().output_is_position_independent()) | |
549dba71 AM |
11482 | { |
11483 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11484 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11485 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11486 | ||
11487 | if ((insn1 & ~0xfffc) == ld_2_12 | |
11488 | && insn2 == add_2_2_12) | |
11489 | { | |
252dcdf4 | 11490 | insn1 = lis_2 + ha(value); |
549dba71 AM |
11491 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); |
11492 | insn2 = addi_2_2 + l(value); | |
11493 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
11494 | return true; | |
11495 | } | |
11496 | } | |
252dcdf4 AM |
11497 | else |
11498 | { | |
11499 | value -= address; | |
11500 | if (value + 0x80008000 <= 0xffffffff) | |
11501 | { | |
11502 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11503 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11504 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11505 | ||
11506 | if ((insn1 & ~0xfffc) == ld_2_12 | |
11507 | && insn2 == add_2_2_12) | |
11508 | { | |
11509 | insn1 = addis_2_12 + ha(value); | |
11510 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
11511 | insn2 = addi_2_2 + l(value); | |
11512 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
11513 | return true; | |
11514 | } | |
11515 | } | |
11516 | } | |
549dba71 AM |
11517 | } |
11518 | break; | |
e3a7574e AM |
11519 | |
11520 | case elfcpp::R_POWERPC_REL16_LO: | |
11521 | // If we are generating a non-PIC executable, edit | |
11522 | // 0: addis 2,12,.TOC.-0b@ha | |
11523 | // addi 2,2,.TOC.-0b@l | |
11524 | // used by ELFv2 global entry points to set up r2, to | |
11525 | // lis 2,.TOC.@ha | |
11526 | // addi 2,2,.TOC.@l | |
11527 | // if .TOC. is in range. */ | |
252dcdf4 AM |
11528 | if (size == 64 |
11529 | && value + address - 4 + 0x80008000 <= 0xffffffff | |
f60c61e6 | 11530 | && relnum + 1 > 1 |
e3a7574e AM |
11531 | && preloc != NULL |
11532 | && target->abiversion() >= 2 | |
11533 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 11534 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
11535 | && gsym != NULL |
11536 | && strcmp(gsym->name(), ".TOC.") == 0) | |
11537 | { | |
0e123f69 | 11538 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
11539 | Reltype prev_rela(preloc - reloc_size); |
11540 | if ((prev_rela.get_r_info() | |
11541 | == elfcpp::elf_r_info<size>(r_sym, | |
11542 | elfcpp::R_POWERPC_REL16_HA)) | |
11543 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
11544 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
11545 | { | |
dcfc7dd4 | 11546 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
11547 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
11548 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11549 | ||
11550 | if ((insn1 & 0xffff0000) == addis_2_12 | |
11551 | && (insn2 & 0xffff0000) == addi_2_2) | |
11552 | { | |
11553 | insn1 = lis_2 + ha(value + address - 4); | |
11554 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
11555 | insn2 = addi_2_2 + l(value + address - 4); | |
11556 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
11557 | if (relinfo->rr) | |
11558 | { | |
11559 | relinfo->rr->set_strategy(relnum - 1, | |
11560 | Relocatable_relocs::RELOC_SPECIAL); | |
11561 | relinfo->rr->set_strategy(relnum, | |
11562 | Relocatable_relocs::RELOC_SPECIAL); | |
11563 | } | |
11564 | return true; | |
11565 | } | |
11566 | } | |
11567 | } | |
11568 | break; | |
aba6bc71 AM |
11569 | } |
11570 | } | |
11571 | ||
f4baf0d4 | 11572 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 11573 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
11574 | switch (r_type) |
11575 | { | |
11576 | case elfcpp::R_POWERPC_ADDR32: | |
11577 | case elfcpp::R_POWERPC_UADDR32: | |
11578 | if (size == 64) | |
f4baf0d4 | 11579 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
11580 | break; |
11581 | ||
11582 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 11583 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 11584 | if (size == 64) |
f4baf0d4 | 11585 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
11586 | break; |
11587 | ||
dd93cd0a | 11588 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 11589 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
11590 | break; |
11591 | ||
b80eed39 AM |
11592 | case elfcpp::R_POWERPC_ADDR16: |
11593 | // We really should have three separate relocations, | |
11594 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
11595 | // and one for insns with 16-bit unsigned fields. | |
11596 | overflow = Reloc::CHECK_BITFIELD; | |
11597 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
11598 | overflow = Reloc::CHECK_LOW_INSN; | |
11599 | break; | |
11600 | ||
f9c6b907 AM |
11601 | case elfcpp::R_POWERPC_ADDR16_HI: |
11602 | case elfcpp::R_POWERPC_ADDR16_HA: | |
11603 | case elfcpp::R_POWERPC_GOT16_HI: | |
11604 | case elfcpp::R_POWERPC_GOT16_HA: | |
11605 | case elfcpp::R_POWERPC_PLT16_HI: | |
11606 | case elfcpp::R_POWERPC_PLT16_HA: | |
11607 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
11608 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
11609 | case elfcpp::R_PPC64_TOC16_HI: | |
11610 | case elfcpp::R_PPC64_TOC16_HA: | |
11611 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
11612 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
11613 | case elfcpp::R_POWERPC_TPREL16_HI: | |
11614 | case elfcpp::R_POWERPC_TPREL16_HA: | |
11615 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11616 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11617 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
11618 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11619 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
11620 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
11621 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
11622 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11623 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
11624 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11625 | case elfcpp::R_POWERPC_REL16_HI: | |
11626 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
11627 | if (size != 32) |
11628 | overflow = Reloc::CHECK_HIGH_INSN; | |
11629 | break; | |
11630 | ||
dd93cd0a AM |
11631 | case elfcpp::R_POWERPC_REL16: |
11632 | case elfcpp::R_PPC64_TOC16: | |
11633 | case elfcpp::R_POWERPC_GOT16: | |
11634 | case elfcpp::R_POWERPC_SECTOFF: | |
11635 | case elfcpp::R_POWERPC_TPREL16: | |
11636 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
11637 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
11638 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
11639 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
11640 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
11641 | overflow = Reloc::CHECK_LOW_INSN; | |
11642 | break; | |
11643 | ||
32f59844 AM |
11644 | case elfcpp::R_PPC64_REL24_NOTOC: |
11645 | if (size == 32) | |
11646 | break; | |
11647 | // Fall through. | |
b80eed39 AM |
11648 | case elfcpp::R_POWERPC_ADDR24: |
11649 | case elfcpp::R_POWERPC_ADDR14: | |
11650 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
11651 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
11652 | case elfcpp::R_PPC64_ADDR16_DS: | |
11653 | case elfcpp::R_POWERPC_REL24: | |
11654 | case elfcpp::R_PPC_PLTREL24: | |
11655 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
11656 | case elfcpp::R_PPC64_TPREL16_DS: |
11657 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11658 | case elfcpp::R_PPC64_TOC16_DS: | |
11659 | case elfcpp::R_PPC64_GOT16_DS: | |
11660 | case elfcpp::R_PPC64_SECTOFF_DS: | |
11661 | case elfcpp::R_POWERPC_REL14: | |
11662 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11663 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
11664 | case elfcpp::R_PPC64_D34: |
11665 | case elfcpp::R_PPC64_PCREL34: | |
11666 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11667 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11668 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
11669 | case elfcpp::R_PPC64_D28: | |
11670 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
11671 | case elfcpp::R_PPC64_TPREL34: |
11672 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
11673 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
11674 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
11675 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
11676 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
f4baf0d4 | 11677 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 11678 | break; |
dd93cd0a | 11679 | } |
42cacb20 | 11680 | |
dcfc7dd4 | 11681 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
11682 | Insn insn = 0; |
11683 | ||
b80eed39 AM |
11684 | if (overflow == Reloc::CHECK_LOW_INSN |
11685 | || overflow == Reloc::CHECK_HIGH_INSN) | |
11686 | { | |
a680de9a | 11687 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 11688 | |
a47622ac AM |
11689 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
11690 | overflow = Reloc::CHECK_BITFIELD; | |
11691 | else if (overflow == Reloc::CHECK_LOW_INSN | |
11692 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
11693 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
11694 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
11695 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
11696 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
11697 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 11698 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
11699 | else |
11700 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
11701 | } |
11702 | ||
a680de9a | 11703 | bool maybe_dq_reloc = false; |
3ea0a085 | 11704 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 11705 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
11706 | switch (r_type) |
11707 | { | |
11708 | case elfcpp::R_POWERPC_NONE: | |
11709 | case elfcpp::R_POWERPC_TLS: | |
11710 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
11711 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
23cedd1d AM |
11712 | case elfcpp::R_POWERPC_PLTSEQ: |
11713 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
11714 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
11715 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 | 11716 | case elfcpp::R_PPC64_PCREL_OPT: |
42cacb20 DE |
11717 | break; |
11718 | ||
11719 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 11720 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 11721 | case elfcpp::R_PPC64_TOC: |
45965137 | 11722 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
11723 | Reloc::addr64(view, value); |
11724 | break; | |
11725 | ||
11726 | case elfcpp::R_POWERPC_TPREL: | |
11727 | case elfcpp::R_POWERPC_DTPREL: | |
11728 | if (size == 64) | |
11729 | Reloc::addr64(view, value); | |
11730 | else | |
3ea0a085 | 11731 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
11732 | break; |
11733 | ||
11734 | case elfcpp::R_PPC64_UADDR64: | |
11735 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
11736 | break; |
11737 | ||
11738 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 11739 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
11740 | break; |
11741 | ||
acc276d8 | 11742 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 11743 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 11744 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
11745 | break; |
11746 | ||
32f59844 AM |
11747 | case elfcpp::R_PPC64_REL24_NOTOC: |
11748 | if (size == 32) | |
11749 | goto unsupp; // R_PPC_EMB_RELSDA | |
11750 | // Fall through. | |
dd93cd0a AM |
11751 | case elfcpp::R_POWERPC_ADDR24: |
11752 | case elfcpp::R_POWERPC_REL24: | |
11753 | case elfcpp::R_PPC_PLTREL24: | |
11754 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 11755 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
11756 | break; |
11757 | ||
dd93cd0a AM |
11758 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
11759 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
11760 | case elfcpp::R_POWERPC_GOT_TPREL16: |
11761 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
11762 | if (size == 64) |
11763 | { | |
ec86f434 | 11764 | // On ppc64 these are all ds form |
a680de9a | 11765 | maybe_dq_reloc = true; |
dd93cd0a AM |
11766 | break; |
11767 | } | |
c25aa1e1 | 11768 | // Fall through. |
cf43a2fe | 11769 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 11770 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 11771 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 11772 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 11773 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
11774 | case elfcpp::R_POWERPC_TPREL16: |
11775 | case elfcpp::R_POWERPC_DTPREL16: | |
11776 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
11777 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 11778 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 11779 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 11780 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 11781 | case elfcpp::R_POWERPC_GOT16_LO: |
08be3224 | 11782 | case elfcpp::R_POWERPC_PLT16_LO: |
cf43a2fe | 11783 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
11784 | case elfcpp::R_POWERPC_TPREL16_LO: |
11785 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
11786 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
11787 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
11788 | if (size == 64) |
11789 | status = Reloc::addr16(view, value, overflow); | |
11790 | else | |
11791 | maybe_dq_reloc = true; | |
dd93cd0a AM |
11792 | break; |
11793 | ||
11794 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 11795 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
11796 | break; |
11797 | ||
f9c6b907 AM |
11798 | case elfcpp::R_PPC64_ADDR16_HIGH: |
11799 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
11800 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
11801 | if (size == 32) | |
11802 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
11803 | goto unsupp; | |
d8e90251 | 11804 | // Fall through. |
cf43a2fe | 11805 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 11806 | case elfcpp::R_POWERPC_REL16_HI: |
c432bbba | 11807 | case elfcpp::R_PPC64_REL16_HIGH: |
cf43a2fe | 11808 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 11809 | case elfcpp::R_POWERPC_GOT16_HI: |
08be3224 | 11810 | case elfcpp::R_POWERPC_PLT16_HI: |
cf43a2fe | 11811 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
11812 | case elfcpp::R_POWERPC_TPREL16_HI: |
11813 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11814 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
11815 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
11816 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
11817 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
11818 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
11819 | break; |
11820 | ||
f9c6b907 AM |
11821 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
11822 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
11823 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
11824 | if (size == 32) | |
11825 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
11826 | goto unsupp; | |
d8e90251 | 11827 | // Fall through. |
cf43a2fe | 11828 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 11829 | case elfcpp::R_POWERPC_REL16_HA: |
c432bbba | 11830 | case elfcpp::R_PPC64_REL16_HIGHA: |
cf43a2fe | 11831 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 11832 | case elfcpp::R_POWERPC_GOT16_HA: |
08be3224 | 11833 | case elfcpp::R_POWERPC_PLT16_HA: |
cf43a2fe | 11834 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
11835 | case elfcpp::R_POWERPC_TPREL16_HA: |
11836 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11837 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11838 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
11839 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11840 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11841 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
11842 | break; |
11843 | ||
a680de9a PB |
11844 | case elfcpp::R_POWERPC_REL16DX_HA: |
11845 | status = Reloc::addr16dx_ha(view, value, overflow); | |
11846 | break; | |
11847 | ||
dd93cd0a AM |
11848 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
11849 | if (size == 32) | |
11850 | // R_PPC_EMB_NADDR16_LO | |
11851 | goto unsupp; | |
d8e90251 | 11852 | // Fall through. |
dd93cd0a | 11853 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
c432bbba | 11854 | case elfcpp::R_PPC64_REL16_HIGHER: |
dd93cd0a AM |
11855 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
11856 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
11857 | break; |
11858 | ||
dd93cd0a AM |
11859 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
11860 | if (size == 32) | |
11861 | // R_PPC_EMB_NADDR16_HI | |
11862 | goto unsupp; | |
d8e90251 | 11863 | // Fall through. |
dd93cd0a | 11864 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
c432bbba | 11865 | case elfcpp::R_PPC64_REL16_HIGHERA: |
dd93cd0a AM |
11866 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
11867 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
11868 | break; |
11869 | ||
dd93cd0a AM |
11870 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
11871 | if (size == 32) | |
11872 | // R_PPC_EMB_NADDR16_HA | |
11873 | goto unsupp; | |
d8e90251 | 11874 | // Fall through. |
dd93cd0a | 11875 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
c432bbba | 11876 | case elfcpp::R_PPC64_REL16_HIGHEST: |
dd93cd0a AM |
11877 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
11878 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
11879 | break; |
11880 | ||
dd93cd0a AM |
11881 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
11882 | if (size == 32) | |
11883 | // R_PPC_EMB_SDAI16 | |
11884 | goto unsupp; | |
d8e90251 | 11885 | // Fall through. |
dd93cd0a | 11886 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
c432bbba | 11887 | case elfcpp::R_PPC64_REL16_HIGHESTA: |
dd93cd0a AM |
11888 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
11889 | Reloc::addr16_ha3(view, value); | |
11890 | break; | |
11891 | ||
11892 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11893 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
11894 | if (size == 32) | |
11895 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
11896 | goto unsupp; | |
d8e90251 | 11897 | // Fall through. |
dd93cd0a AM |
11898 | case elfcpp::R_PPC64_TPREL16_DS: |
11899 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
11900 | if (size == 32) | |
11901 | // R_PPC_TLSGD, R_PPC_TLSLD | |
11902 | break; | |
d8e90251 | 11903 | // Fall through. |
cf43a2fe AM |
11904 | case elfcpp::R_PPC64_ADDR16_DS: |
11905 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
11906 | case elfcpp::R_PPC64_TOC16_DS: |
11907 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
11908 | case elfcpp::R_PPC64_GOT16_DS: |
11909 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
08be3224 | 11910 | case elfcpp::R_PPC64_PLT16_LO_DS: |
cf43a2fe AM |
11911 | case elfcpp::R_PPC64_SECTOFF_DS: |
11912 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 11913 | maybe_dq_reloc = true; |
dd93cd0a AM |
11914 | break; |
11915 | ||
11916 | case elfcpp::R_POWERPC_ADDR14: | |
11917 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
11918 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
11919 | case elfcpp::R_POWERPC_REL14: | |
11920 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11921 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 11922 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
11923 | break; |
11924 | ||
11925 | case elfcpp::R_POWERPC_COPY: | |
11926 | case elfcpp::R_POWERPC_GLOB_DAT: | |
11927 | case elfcpp::R_POWERPC_JMP_SLOT: | |
11928 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 11929 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
11930 | case elfcpp::R_PPC64_JMP_IREL: |
11931 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
11932 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
11933 | _("unexpected reloc %u in object file"), | |
11934 | r_type); | |
11935 | break; | |
11936 | ||
7e57d19e | 11937 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 11938 | if (size == 32) |
7e57d19e | 11939 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
11940 | goto unsupp; |
11941 | else | |
11942 | { | |
7e57d19e AM |
11943 | Symbol_location loc; |
11944 | loc.object = relinfo->object; | |
11945 | loc.shndx = relinfo->data_shndx; | |
11946 | loc.offset = rela.get_r_offset(); | |
b0d0d02b AM |
11947 | const Tocsave_loc *tocsave = target->tocsave_loc(); |
11948 | if (tocsave->find(loc) != tocsave->end()) | |
7e57d19e AM |
11949 | { |
11950 | // If we've generated plt calls using this tocsave, then | |
11951 | // the nop needs to be changed to save r2. | |
11952 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11953 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
11954 | elfcpp::Swap<32, big_endian>:: | |
11955 | writeval(iview, std_2_1 + target->stk_toc()); | |
11956 | } | |
dd93cd0a AM |
11957 | } |
11958 | break; | |
11959 | ||
11960 | case elfcpp::R_PPC_EMB_SDA2I16: | |
11961 | case elfcpp::R_PPC_EMB_SDA2REL: | |
11962 | if (size == 32) | |
11963 | goto unsupp; | |
11964 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
11965 | break; |
11966 | ||
e4dff765 AM |
11967 | case elfcpp::R_PPC64_D34: |
11968 | case elfcpp::R_PPC64_D34_LO: | |
11969 | case elfcpp::R_PPC64_PCREL34: | |
11970 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11971 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11972 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
89c52ae3 AM |
11973 | case elfcpp::R_PPC64_TPREL34: |
11974 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
11975 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
11976 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
11977 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
11978 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
e4dff765 AM |
11979 | if (size == 32) |
11980 | goto unsupp; | |
11981 | status = Reloc::addr34(view, value, overflow); | |
11982 | break; | |
11983 | ||
11984 | case elfcpp::R_PPC64_D34_HI30: | |
11985 | if (size == 32) | |
11986 | goto unsupp; | |
11987 | Reloc::addr34_hi(view, value); | |
11988 | break; | |
11989 | ||
11990 | case elfcpp::R_PPC64_D34_HA30: | |
11991 | if (size == 32) | |
11992 | goto unsupp; | |
11993 | Reloc::addr34_ha(view, value); | |
11994 | break; | |
11995 | ||
11996 | case elfcpp::R_PPC64_D28: | |
11997 | case elfcpp::R_PPC64_PCREL28: | |
11998 | if (size == 32) | |
11999 | goto unsupp; | |
12000 | status = Reloc::addr28(view, value, overflow); | |
12001 | break; | |
12002 | ||
12003 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
12004 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
12005 | if (size == 32) | |
12006 | goto unsupp; | |
12007 | Reloc::addr16_higher34(view, value); | |
12008 | break; | |
12009 | ||
12010 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
12011 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
12012 | if (size == 32) | |
12013 | goto unsupp; | |
12014 | Reloc::addr16_highera34(view, value); | |
12015 | break; | |
12016 | ||
12017 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
12018 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
12019 | if (size == 32) | |
12020 | goto unsupp; | |
12021 | Reloc::addr16_highest34(view, value); | |
12022 | break; | |
12023 | ||
12024 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
12025 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
12026 | if (size == 32) | |
12027 | goto unsupp; | |
12028 | Reloc::addr16_highesta34(view, value); | |
12029 | break; | |
12030 | ||
dd93cd0a AM |
12031 | case elfcpp::R_POWERPC_PLT32: |
12032 | case elfcpp::R_POWERPC_PLTREL32: | |
dd93cd0a AM |
12033 | case elfcpp::R_PPC_SDAREL16: |
12034 | case elfcpp::R_POWERPC_ADDR30: | |
12035 | case elfcpp::R_PPC64_PLT64: | |
12036 | case elfcpp::R_PPC64_PLTREL64: | |
12037 | case elfcpp::R_PPC64_PLTGOT16: | |
12038 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
12039 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
12040 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
dd93cd0a AM |
12041 | case elfcpp::R_PPC64_PLTGOT16_DS: |
12042 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a | 12043 | case elfcpp::R_PPC_TOC16: |
42cacb20 | 12044 | default: |
dd93cd0a | 12045 | unsupp: |
42cacb20 DE |
12046 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
12047 | _("unsupported reloc %u"), | |
12048 | r_type); | |
12049 | break; | |
12050 | } | |
a680de9a PB |
12051 | |
12052 | if (maybe_dq_reloc) | |
12053 | { | |
12054 | if (insn == 0) | |
12055 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
12056 | ||
12057 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
12058 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
12059 | && (insn & 3) == 1)) | |
12060 | status = Reloc::addr16_dq(view, value, overflow); | |
12061 | else if (size == 64 | |
12062 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
12063 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
12064 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
12065 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
12066 | status = Reloc::addr16_ds(view, value, overflow); | |
12067 | else | |
12068 | status = Reloc::addr16(view, value, overflow); | |
12069 | } | |
12070 | ||
0cfb0717 | 12071 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
12072 | && (has_stub_value |
12073 | || !(gsym != NULL | |
282c9750 | 12074 | && gsym->is_undefined() |
32f59844 | 12075 | && is_branch_reloc<size>(r_type)))) |
0cfb0717 AM |
12076 | { |
12077 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
12078 | _("relocation overflow")); | |
12079 | if (has_stub_value) | |
12080 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
12081 | } | |
42cacb20 DE |
12082 | |
12083 | return true; | |
12084 | } | |
12085 | ||
42cacb20 DE |
12086 | // Relocate section data. |
12087 | ||
12088 | template<int size, bool big_endian> | |
12089 | void | |
12090 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
12091 | const Relocate_info<size, big_endian>* relinfo, |
12092 | unsigned int sh_type, | |
12093 | const unsigned char* prelocs, | |
12094 | size_t reloc_count, | |
12095 | Output_section* output_section, | |
12096 | bool needs_special_offset_handling, | |
12097 | unsigned char* view, | |
c9269dff | 12098 | Address address, |
d83ce4e3 AM |
12099 | section_size_type view_size, |
12100 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
12101 | { |
12102 | typedef Target_powerpc<size, big_endian> Powerpc; | |
12103 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
12104 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
12105 | Powerpc_comdat_behavior; | |
4d625b70 CC |
12106 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
12107 | Classify_reloc; | |
42cacb20 DE |
12108 | |
12109 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12110 | ||
4d625b70 CC |
12111 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
12112 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
12113 | relinfo, |
12114 | this, | |
12115 | prelocs, | |
12116 | reloc_count, | |
12117 | output_section, | |
12118 | needs_special_offset_handling, | |
12119 | view, | |
12120 | address, | |
364c7fa5 ILT |
12121 | view_size, |
12122 | reloc_symbol_changes); | |
42cacb20 DE |
12123 | } |
12124 | ||
4d625b70 | 12125 | template<int size, bool big_endian> |
cf43a2fe | 12126 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 12127 | { |
cf43a2fe | 12128 | public: |
0e123f69 AM |
12129 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
12130 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
12131 | static const int sh_type = elfcpp::SHT_RELA; |
12132 | ||
12133 | // Return the symbol referred to by the relocation. | |
12134 | static inline unsigned int | |
12135 | get_r_sym(const Reltype* reloc) | |
12136 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
12137 | ||
12138 | // Return the type of the relocation. | |
12139 | static inline unsigned int | |
12140 | get_r_type(const Reltype* reloc) | |
12141 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
12142 | ||
cf43a2fe AM |
12143 | // Return the strategy to use for a local symbol which is not a |
12144 | // section symbol, given the relocation type. | |
12145 | inline Relocatable_relocs::Reloc_strategy | |
12146 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
12147 | { | |
12148 | if (r_type == 0 && r_sym == 0) | |
12149 | return Relocatable_relocs::RELOC_DISCARD; | |
12150 | return Relocatable_relocs::RELOC_COPY; | |
12151 | } | |
12152 | ||
12153 | // Return the strategy to use for a local symbol which is a section | |
12154 | // symbol, given the relocation type. | |
12155 | inline Relocatable_relocs::Reloc_strategy | |
12156 | local_section_strategy(unsigned int, Relobj*) | |
12157 | { | |
12158 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
12159 | } | |
12160 | ||
12161 | // Return the strategy to use for a global symbol, given the | |
12162 | // relocation type, the object, and the symbol index. | |
12163 | inline Relocatable_relocs::Reloc_strategy | |
12164 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
12165 | { | |
08be3224 AM |
12166 | if (size == 32 |
12167 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
12168 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
12169 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
12170 | || r_type == elfcpp::R_POWERPC_PLT16_HA)) | |
cf43a2fe AM |
12171 | return Relocatable_relocs::RELOC_SPECIAL; |
12172 | return Relocatable_relocs::RELOC_COPY; | |
12173 | } | |
12174 | }; | |
42cacb20 DE |
12175 | |
12176 | // Scan the relocs during a relocatable link. | |
12177 | ||
12178 | template<int size, bool big_endian> | |
12179 | void | |
12180 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
12181 | Symbol_table* symtab, |
12182 | Layout* layout, | |
12183 | Sized_relobj_file<size, big_endian>* object, | |
12184 | unsigned int data_shndx, | |
12185 | unsigned int sh_type, | |
12186 | const unsigned char* prelocs, | |
12187 | size_t reloc_count, | |
12188 | Output_section* output_section, | |
12189 | bool needs_special_offset_handling, | |
12190 | size_t local_symbol_count, | |
12191 | const unsigned char* plocal_symbols, | |
12192 | Relocatable_relocs* rr) | |
42cacb20 | 12193 | { |
4d625b70 CC |
12194 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
12195 | ||
42cacb20 DE |
12196 | gold_assert(sh_type == elfcpp::SHT_RELA); |
12197 | ||
4d625b70 | 12198 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
12199 | symtab, |
12200 | layout, | |
12201 | object, | |
12202 | data_shndx, | |
12203 | prelocs, | |
12204 | reloc_count, | |
12205 | output_section, | |
12206 | needs_special_offset_handling, | |
12207 | local_symbol_count, | |
12208 | plocal_symbols, | |
12209 | rr); | |
12210 | } | |
12211 | ||
4d625b70 CC |
12212 | // Scan the relocs for --emit-relocs. |
12213 | ||
12214 | template<int size, bool big_endian> | |
12215 | void | |
12216 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
12217 | Symbol_table* symtab, | |
12218 | Layout* layout, | |
12219 | Sized_relobj_file<size, big_endian>* object, | |
12220 | unsigned int data_shndx, | |
12221 | unsigned int sh_type, | |
12222 | const unsigned char* prelocs, | |
12223 | size_t reloc_count, | |
12224 | Output_section* output_section, | |
12225 | bool needs_special_offset_handling, | |
12226 | size_t local_symbol_count, | |
12227 | const unsigned char* plocal_syms, | |
12228 | Relocatable_relocs* rr) | |
12229 | { | |
12230 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
12231 | Classify_reloc; | |
12232 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
12233 | Emit_relocs_strategy; | |
12234 | ||
12235 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12236 | ||
12237 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
12238 | symtab, | |
12239 | layout, | |
12240 | object, | |
12241 | data_shndx, | |
12242 | prelocs, | |
12243 | reloc_count, | |
12244 | output_section, | |
12245 | needs_special_offset_handling, | |
12246 | local_symbol_count, | |
12247 | plocal_syms, | |
12248 | rr); | |
12249 | } | |
12250 | ||
7404fe1b | 12251 | // Emit relocations for a section. |
dd93cd0a AM |
12252 | // This is a modified version of the function by the same name in |
12253 | // target-reloc.h. Using relocate_special_relocatable for | |
12254 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
12255 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
12256 | |
12257 | template<int size, bool big_endian> | |
12258 | void | |
7404fe1b | 12259 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
12260 | const Relocate_info<size, big_endian>* relinfo, |
12261 | unsigned int sh_type, | |
12262 | const unsigned char* prelocs, | |
12263 | size_t reloc_count, | |
12264 | Output_section* output_section, | |
62fe925a | 12265 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 12266 | unsigned char*, |
dd93cd0a | 12267 | Address view_address, |
cf43a2fe | 12268 | section_size_type, |
42cacb20 DE |
12269 | unsigned char* reloc_view, |
12270 | section_size_type reloc_view_size) | |
12271 | { | |
12272 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12273 | ||
0e123f69 AM |
12274 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
12275 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
12276 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
12277 | // Offset from start of insn to d-field reloc. |
12278 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
12279 | |
12280 | Powerpc_relobj<size, big_endian>* const object | |
12281 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
12282 | const unsigned int local_count = object->local_symbol_count(); | |
12283 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 12284 | Address got2_addend = 0; |
cf43a2fe | 12285 | if (got2_shndx != 0) |
c9269dff AM |
12286 | { |
12287 | got2_addend = object->get_output_section_offset(got2_shndx); | |
12288 | gold_assert(got2_addend != invalid_address); | |
12289 | } | |
cf43a2fe | 12290 | |
033bfb73 CC |
12291 | const bool relocatable = parameters->options().relocatable(); |
12292 | ||
cf43a2fe | 12293 | unsigned char* pwrite = reloc_view; |
7404fe1b | 12294 | bool zap_next = false; |
cf43a2fe AM |
12295 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
12296 | { | |
91a65d2f | 12297 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
12298 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
12299 | continue; | |
12300 | ||
12301 | Reltype reloc(prelocs); | |
12302 | Reltype_write reloc_write(pwrite); | |
12303 | ||
7404fe1b | 12304 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 12305 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
12306 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
12307 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
12308 | const unsigned int orig_r_sym = r_sym; | |
12309 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
12310 | = reloc.get_r_addend(); | |
12311 | const Symbol* gsym = NULL; | |
12312 | ||
12313 | if (zap_next) | |
12314 | { | |
12315 | // We could arrange to discard these and other relocs for | |
12316 | // tls optimised sequences in the strategy methods, but for | |
12317 | // now do as BFD ld does. | |
12318 | r_type = elfcpp::R_POWERPC_NONE; | |
12319 | zap_next = false; | |
12320 | } | |
cf43a2fe AM |
12321 | |
12322 | // Get the new symbol index. | |
9215b98b | 12323 | Output_section* os = NULL; |
cf43a2fe AM |
12324 | if (r_sym < local_count) |
12325 | { | |
12326 | switch (strategy) | |
12327 | { | |
12328 | case Relocatable_relocs::RELOC_COPY: | |
12329 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 12330 | if (r_sym != 0) |
dd93cd0a | 12331 | { |
7404fe1b AM |
12332 | r_sym = object->symtab_index(r_sym); |
12333 | gold_assert(r_sym != -1U); | |
dd93cd0a | 12334 | } |
cf43a2fe AM |
12335 | break; |
12336 | ||
12337 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
12338 | { | |
12339 | // We are adjusting a section symbol. We need to find | |
12340 | // the symbol table index of the section symbol for | |
12341 | // the output section corresponding to input section | |
12342 | // in which this symbol is defined. | |
12343 | gold_assert(r_sym < local_count); | |
12344 | bool is_ordinary; | |
12345 | unsigned int shndx = | |
12346 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
12347 | gold_assert(is_ordinary); | |
9215b98b | 12348 | os = object->output_section(shndx); |
cf43a2fe AM |
12349 | gold_assert(os != NULL); |
12350 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 12351 | r_sym = os->symtab_index(); |
cf43a2fe AM |
12352 | } |
12353 | break; | |
12354 | ||
12355 | default: | |
12356 | gold_unreachable(); | |
12357 | } | |
12358 | } | |
12359 | else | |
12360 | { | |
7404fe1b | 12361 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
12362 | gold_assert(gsym != NULL); |
12363 | if (gsym->is_forwarder()) | |
12364 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
12365 | ||
12366 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 12367 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
12368 | } |
12369 | ||
12370 | // Get the new offset--the location in the output section where | |
12371 | // this relocation should be applied. | |
cf43a2fe | 12372 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 12373 | offset += offset_in_output_section; |
cf43a2fe AM |
12374 | else |
12375 | { | |
c9269dff AM |
12376 | section_offset_type sot_offset = |
12377 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 12378 | section_offset_type new_sot_offset = |
c9269dff AM |
12379 | output_section->output_offset(object, relinfo->data_shndx, |
12380 | sot_offset); | |
cf43a2fe | 12381 | gold_assert(new_sot_offset != -1); |
7404fe1b | 12382 | offset = new_sot_offset; |
cf43a2fe AM |
12383 | } |
12384 | ||
dd93cd0a AM |
12385 | // In an object file, r_offset is an offset within the section. |
12386 | // In an executable or dynamic object, generated by | |
12387 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 12388 | if (!relocatable) |
dd93cd0a | 12389 | { |
7404fe1b | 12390 | offset += view_address; |
dd93cd0a | 12391 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 12392 | offset -= offset_in_output_section; |
dd93cd0a AM |
12393 | } |
12394 | ||
cf43a2fe | 12395 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
12396 | if (strategy == Relocatable_relocs::RELOC_COPY) |
12397 | ; | |
12398 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
12399 | { | |
7404fe1b | 12400 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
033bfb73 CC |
12401 | addend = psymval->value(object, addend); |
12402 | // In a relocatable link, the symbol value is relative to | |
12403 | // the start of the output section. For a non-relocatable | |
12404 | // link, we need to adjust the addend. | |
12405 | if (!relocatable) | |
12406 | { | |
12407 | gold_assert(os != NULL); | |
12408 | addend -= os->address(); | |
12409 | } | |
cf43a2fe AM |
12410 | } |
12411 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
12412 | { | |
e3a7574e AM |
12413 | if (size == 32) |
12414 | { | |
12415 | if (addend >= 32768) | |
12416 | addend += got2_addend; | |
12417 | } | |
12418 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
12419 | { | |
12420 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 12421 | addend -= d_offset; |
e3a7574e AM |
12422 | } |
12423 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
12424 | { | |
12425 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 12426 | addend -= d_offset + 4; |
e3a7574e | 12427 | } |
cf43a2fe AM |
12428 | } |
12429 | else | |
12430 | gold_unreachable(); | |
12431 | ||
033bfb73 | 12432 | if (!relocatable) |
7404fe1b AM |
12433 | { |
12434 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
12435 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
12436 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
12437 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
12438 | { | |
12439 | // First instruction of a global dynamic sequence, | |
12440 | // arg setup insn. | |
12441 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
12442 | switch (this->optimize_tls_gd(final)) | |
12443 | { | |
12444 | case tls::TLSOPT_TO_IE: | |
12445 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
12446 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
12447 | break; | |
12448 | case tls::TLSOPT_TO_LE: | |
12449 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
12450 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
12451 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12452 | else | |
12453 | { | |
12454 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12455 | offset -= d_offset; |
7404fe1b AM |
12456 | } |
12457 | break; | |
12458 | default: | |
12459 | break; | |
12460 | } | |
12461 | } | |
12462 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
12463 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
12464 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
12465 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
12466 | { | |
12467 | // First instruction of a local dynamic sequence, | |
12468 | // arg setup insn. | |
12469 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
12470 | { | |
12471 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
12472 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
12473 | { | |
12474 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12475 | const Output_section* os = relinfo->layout->tls_segment() | |
12476 | ->first_section(); | |
12477 | gold_assert(os != NULL); | |
12478 | gold_assert(os->needs_symtab_index()); | |
12479 | r_sym = os->symtab_index(); | |
12480 | addend = dtp_offset; | |
12481 | } | |
12482 | else | |
12483 | { | |
12484 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12485 | offset -= d_offset; |
7404fe1b AM |
12486 | } |
12487 | } | |
12488 | } | |
12489 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
12490 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
12491 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
12492 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
12493 | { | |
12494 | // First instruction of initial exec sequence. | |
12495 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
12496 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
12497 | { | |
12498 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
12499 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
12500 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12501 | else | |
12502 | { | |
12503 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12504 | offset -= d_offset; |
7404fe1b AM |
12505 | } |
12506 | } | |
12507 | } | |
12508 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
12509 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
12510 | { | |
12511 | // Second instruction of a global dynamic sequence, | |
12512 | // the __tls_get_addr call | |
12513 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
12514 | switch (this->optimize_tls_gd(final)) | |
12515 | { | |
12516 | case tls::TLSOPT_TO_IE: | |
12517 | r_type = elfcpp::R_POWERPC_NONE; | |
12518 | zap_next = true; | |
12519 | break; | |
12520 | case tls::TLSOPT_TO_LE: | |
12521 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12522 | offset += d_offset; |
7404fe1b AM |
12523 | zap_next = true; |
12524 | break; | |
12525 | default: | |
12526 | break; | |
12527 | } | |
12528 | } | |
12529 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
12530 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
12531 | { | |
12532 | // Second instruction of a local dynamic sequence, | |
12533 | // the __tls_get_addr call | |
12534 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
12535 | { | |
12536 | const Output_section* os = relinfo->layout->tls_segment() | |
12537 | ->first_section(); | |
12538 | gold_assert(os != NULL); | |
12539 | gold_assert(os->needs_symtab_index()); | |
12540 | r_sym = os->symtab_index(); | |
12541 | addend = dtp_offset; | |
12542 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12543 | offset += d_offset; |
7404fe1b AM |
12544 | zap_next = true; |
12545 | } | |
12546 | } | |
12547 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
12548 | { | |
12549 | // Second instruction of an initial exec sequence | |
12550 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
12551 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
12552 | { | |
12553 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12554 | offset += d_offset; |
7404fe1b AM |
12555 | } |
12556 | } | |
12557 | } | |
12558 | ||
12559 | reloc_write.put_r_offset(offset); | |
12560 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
12561 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
12562 | |
12563 | pwrite += reloc_size; | |
12564 | } | |
12565 | ||
12566 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
12567 | == reloc_view_size); | |
42cacb20 DE |
12568 | } |
12569 | ||
ec661b9d | 12570 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
12571 | // treatment. This is how we support equality comparisons of function |
12572 | // pointers across shared library boundaries, as described in the | |
12573 | // processor specific ABI supplement. | |
12574 | ||
12575 | template<int size, bool big_endian> | |
12576 | uint64_t | |
12577 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
12578 | { | |
cf43a2fe AM |
12579 | if (size == 32) |
12580 | { | |
12581 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
12582 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12583 | p != this->stub_tables_.end(); | |
12584 | ++p) | |
12585 | { | |
7e57d19e AM |
12586 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12587 | = (*p)->find_plt_call_entry(gsym); | |
12588 | if (ent != NULL) | |
12589 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12590 | } |
c9824451 | 12591 | } |
9055360d AM |
12592 | else if (this->abiversion() >= 2) |
12593 | { | |
faa2211d AM |
12594 | Address off = this->glink_section()->find_global_entry(gsym); |
12595 | if (off != invalid_address) | |
9055360d AM |
12596 | return this->glink_section()->global_entry_address() + off; |
12597 | } | |
ec661b9d | 12598 | gold_unreachable(); |
c9824451 AM |
12599 | } |
12600 | ||
12601 | // Return the PLT address to use for a local symbol. | |
12602 | template<int size, bool big_endian> | |
12603 | uint64_t | |
12604 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
12605 | const Relobj* object, | |
12606 | unsigned int symndx) const | |
12607 | { | |
12608 | if (size == 32) | |
12609 | { | |
12610 | const Sized_relobj<size, big_endian>* relobj | |
12611 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
12612 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12613 | p != this->stub_tables_.end(); | |
12614 | ++p) | |
12615 | { | |
7e57d19e AM |
12616 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12617 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
12618 | if (ent != NULL) | |
12619 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12620 | } |
c9824451 | 12621 | } |
ec661b9d | 12622 | gold_unreachable(); |
c9824451 AM |
12623 | } |
12624 | ||
12625 | // Return the PLT address to use for a global symbol. | |
12626 | template<int size, bool big_endian> | |
12627 | uint64_t | |
12628 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
12629 | const Symbol* gsym) const | |
12630 | { | |
12631 | if (size == 32) | |
12632 | { | |
ec661b9d AM |
12633 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12634 | p != this->stub_tables_.end(); | |
12635 | ++p) | |
12636 | { | |
7e57d19e AM |
12637 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12638 | = (*p)->find_plt_call_entry(gsym); | |
12639 | if (ent != NULL) | |
12640 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12641 | } |
cf43a2fe | 12642 | } |
9055360d AM |
12643 | else if (this->abiversion() >= 2) |
12644 | { | |
faa2211d AM |
12645 | Address off = this->glink_section()->find_global_entry(gsym); |
12646 | if (off != invalid_address) | |
9055360d AM |
12647 | return this->glink_section()->global_entry_address() + off; |
12648 | } | |
ec661b9d | 12649 | gold_unreachable(); |
42cacb20 DE |
12650 | } |
12651 | ||
bd73a62d AM |
12652 | // Return the offset to use for the GOT_INDX'th got entry which is |
12653 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
12654 | template<int size, bool big_endian> | |
12655 | int64_t | |
12656 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
12657 | const Relobj* object, | |
12658 | unsigned int symndx, | |
12659 | unsigned int got_indx) const | |
12660 | { | |
12661 | const Powerpc_relobj<size, big_endian>* ppc_object | |
12662 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
12663 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
12664 | { | |
12665 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
12666 | got_type <= GOT_TYPE_TPREL; | |
12667 | got_type = Got_type(got_type + 1)) | |
12668 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
12669 | { | |
12670 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
12671 | if (got_type == GOT_TYPE_TLSGD) | |
12672 | off += size / 8; | |
12673 | if (off == got_indx * (size / 8)) | |
12674 | { | |
12675 | if (got_type == GOT_TYPE_TPREL) | |
12676 | return -tp_offset; | |
12677 | else | |
12678 | return -dtp_offset; | |
12679 | } | |
12680 | } | |
12681 | } | |
12682 | gold_unreachable(); | |
12683 | } | |
12684 | ||
12685 | // Return the offset to use for the GOT_INDX'th got entry which is | |
12686 | // for global tls symbol GSYM. | |
12687 | template<int size, bool big_endian> | |
12688 | int64_t | |
12689 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
12690 | Symbol* gsym, | |
12691 | unsigned int got_indx) const | |
12692 | { | |
12693 | if (gsym->type() == elfcpp::STT_TLS) | |
12694 | { | |
12695 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
12696 | got_type <= GOT_TYPE_TPREL; | |
12697 | got_type = Got_type(got_type + 1)) | |
12698 | if (gsym->has_got_offset(got_type)) | |
12699 | { | |
12700 | unsigned int off = gsym->got_offset(got_type); | |
12701 | if (got_type == GOT_TYPE_TLSGD) | |
12702 | off += size / 8; | |
12703 | if (off == got_indx * (size / 8)) | |
12704 | { | |
12705 | if (got_type == GOT_TYPE_TPREL) | |
12706 | return -tp_offset; | |
12707 | else | |
12708 | return -dtp_offset; | |
12709 | } | |
12710 | } | |
12711 | } | |
12712 | gold_unreachable(); | |
12713 | } | |
12714 | ||
42cacb20 DE |
12715 | // The selector for powerpc object files. |
12716 | ||
12717 | template<int size, bool big_endian> | |
12718 | class Target_selector_powerpc : public Target_selector | |
12719 | { | |
12720 | public: | |
12721 | Target_selector_powerpc() | |
edc27beb AM |
12722 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
12723 | size, big_endian, | |
03ef7571 ILT |
12724 | (size == 64 |
12725 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
12726 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
12727 | (size == 64 | |
12728 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
12729 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
12730 | { } |
12731 | ||
2e702c99 RM |
12732 | virtual Target* |
12733 | do_instantiate_target() | |
7f055c20 | 12734 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
12735 | }; |
12736 | ||
12737 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
12738 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
12739 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
12740 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
12741 | ||
decdd3bc AM |
12742 | // Instantiate these constants for -O0 |
12743 | template<int size, bool big_endian> | |
9055360d AM |
12744 | const typename Output_data_glink<size, big_endian>::Address |
12745 | Output_data_glink<size, big_endian>::invalid_address; | |
12746 | template<int size, bool big_endian> | |
decdd3bc AM |
12747 | const typename Stub_table<size, big_endian>::Address |
12748 | Stub_table<size, big_endian>::invalid_address; | |
12749 | template<int size, bool big_endian> | |
12750 | const typename Target_powerpc<size, big_endian>::Address | |
12751 | Target_powerpc<size, big_endian>::invalid_address; | |
12752 | ||
42cacb20 | 12753 | } // End anonymous namespace. |