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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), | |
0af4fcc2 | 104 | no_tls_marker_(false), tls_marker_(false), tls_opt_error_(false), |
590b87ff | 105 | e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), |
724436fc AM |
106 | access_from_map_(), has14_(), stub_table_index_(), st_other_(), |
107 | attributes_section_data_(NULL) | |
b4f7960d AM |
108 | { |
109 | this->set_abiversion(0); | |
110 | } | |
cf43a2fe AM |
111 | |
112 | ~Powerpc_relobj() | |
724436fc | 113 | { delete this->attributes_section_data_; } |
cf43a2fe | 114 | |
b4f7960d AM |
115 | // Read the symbols then set up st_other vector. |
116 | void | |
117 | do_read_symbols(Read_symbols_data*); | |
118 | ||
5edad15d AM |
119 | // Arrange to always relocate .toc first. |
120 | virtual void | |
121 | do_relocate_sections( | |
122 | const Symbol_table* symtab, const Layout* layout, | |
123 | const unsigned char* pshdrs, Output_file* of, | |
124 | typename Sized_relobj_file<size, big_endian>::Views* pviews); | |
125 | ||
126 | // The .toc section index. | |
127 | unsigned int | |
128 | toc_shndx() const | |
129 | { | |
130 | return this->toc_; | |
131 | } | |
132 | ||
133 | // Mark .toc entry at OFF as not optimizable. | |
134 | void | |
135 | set_no_toc_opt(Address off) | |
136 | { | |
137 | if (this->no_toc_opt_.empty()) | |
138 | this->no_toc_opt_.resize(this->section_size(this->toc_shndx()) | |
139 | / (size / 8)); | |
140 | off /= size / 8; | |
141 | if (off < this->no_toc_opt_.size()) | |
142 | this->no_toc_opt_[off] = true; | |
143 | } | |
144 | ||
145 | // Mark the entire .toc as not optimizable. | |
146 | void | |
147 | set_no_toc_opt() | |
148 | { | |
149 | this->no_toc_opt_.resize(1); | |
150 | this->no_toc_opt_[0] = true; | |
151 | } | |
152 | ||
153 | // Return true if code using the .toc entry at OFF should not be edited. | |
154 | bool | |
155 | no_toc_opt(Address off) const | |
156 | { | |
157 | if (this->no_toc_opt_.empty()) | |
158 | return false; | |
159 | off /= size / 8; | |
160 | if (off >= this->no_toc_opt_.size()) | |
161 | return true; | |
162 | return this->no_toc_opt_[off]; | |
163 | } | |
164 | ||
0af4fcc2 AM |
165 | void |
166 | set_no_tls_marker() | |
167 | { | |
168 | if (!this->no_tls_marker_ && this->tls_marker_) | |
169 | this->tls_opt_error_ = true; | |
170 | this->no_tls_marker_ = true; | |
171 | } | |
172 | ||
173 | bool | |
174 | no_tls_marker() const | |
175 | { return this->no_tls_marker_; } | |
176 | ||
177 | void | |
178 | set_tls_marker() | |
179 | { this->tls_marker_ = true; } | |
180 | ||
181 | bool | |
182 | tls_marker() const | |
183 | { return this->tls_marker_; } | |
184 | ||
185 | bool | |
186 | tls_opt_error() const | |
187 | { return this->tls_opt_error_; } | |
188 | ||
c9269dff | 189 | // The .got2 section shndx. |
cf43a2fe AM |
190 | unsigned int |
191 | got2_shndx() const | |
192 | { | |
193 | if (size == 32) | |
c9269dff | 194 | return this->special_; |
cf43a2fe AM |
195 | else |
196 | return 0; | |
197 | } | |
198 | ||
c9269dff AM |
199 | // The .opd section shndx. |
200 | unsigned int | |
201 | opd_shndx() const | |
202 | { | |
203 | if (size == 32) | |
204 | return 0; | |
205 | else | |
206 | return this->special_; | |
207 | } | |
208 | ||
209 | // Init OPD entry arrays. | |
210 | void | |
211 | init_opd(size_t opd_size) | |
212 | { | |
213 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 214 | this->opd_ent_.resize(count); |
c9269dff AM |
215 | } |
216 | ||
217 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
218 | unsigned int |
219 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
220 | { |
221 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
222 | gold_assert(ndx < this->opd_ent_.size()); |
223 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 224 | if (value != NULL) |
bfdfa4cd AM |
225 | *value = this->opd_ent_[ndx].off; |
226 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
227 | } |
228 | ||
229 | // Set section and offset of function entry for .opd + R_OFF. | |
230 | void | |
dd93cd0a | 231 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
232 | { |
233 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
234 | gold_assert(ndx < this->opd_ent_.size()); |
235 | this->opd_ent_[ndx].shndx = shndx; | |
236 | this->opd_ent_[ndx].off = value; | |
237 | } | |
238 | ||
239 | // Return discard flag for .opd + R_OFF. | |
240 | bool | |
241 | get_opd_discard(Address r_off) const | |
242 | { | |
243 | size_t ndx = this->opd_ent_ndx(r_off); | |
244 | gold_assert(ndx < this->opd_ent_.size()); | |
245 | return this->opd_ent_[ndx].discard; | |
246 | } | |
247 | ||
248 | // Set discard flag for .opd + R_OFF. | |
249 | void | |
250 | set_opd_discard(Address r_off) | |
251 | { | |
252 | size_t ndx = this->opd_ent_ndx(r_off); | |
253 | gold_assert(ndx < this->opd_ent_.size()); | |
254 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
255 | } |
256 | ||
e81fea4d AM |
257 | bool |
258 | opd_valid() const | |
259 | { return this->opd_valid_; } | |
260 | ||
261 | void | |
262 | set_opd_valid() | |
263 | { this->opd_valid_ = true; } | |
264 | ||
c9269dff AM |
265 | // Examine .rela.opd to build info about function entry points. |
266 | void | |
267 | scan_opd_relocs(size_t reloc_count, | |
268 | const unsigned char* prelocs, | |
269 | const unsigned char* plocal_syms); | |
270 | ||
5edad15d AM |
271 | // Returns true if a code sequence loading a TOC entry can be |
272 | // converted into code calculating a TOC pointer relative offset. | |
273 | bool | |
274 | make_toc_relative(Target_powerpc<size, big_endian>* target, | |
275 | Address* value); | |
276 | ||
c9b8abb7 AM |
277 | bool |
278 | make_got_relative(Target_powerpc<size, big_endian>* target, | |
279 | const Symbol_value<size>* psymval, | |
280 | Address addend, | |
281 | Address* value); | |
282 | ||
26a4e9cb AM |
283 | // Perform the Sized_relobj_file method, then set up opd info from |
284 | // .opd relocs. | |
c9269dff AM |
285 | void |
286 | do_read_relocs(Read_relocs_data*); | |
287 | ||
cf43a2fe AM |
288 | bool |
289 | do_find_special_sections(Read_symbols_data* sd); | |
290 | ||
ec4dbad3 AM |
291 | // Adjust this local symbol value. Return false if the symbol |
292 | // should be discarded from the output file. | |
293 | bool | |
294 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
295 | { | |
296 | if (size == 64 && this->opd_shndx() != 0) | |
297 | { | |
298 | bool is_ordinary; | |
299 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
300 | return true; | |
301 | if (this->get_opd_discard(lv->input_value())) | |
302 | return false; | |
303 | } | |
304 | return true; | |
305 | } | |
306 | ||
6c77229c AM |
307 | Access_from* |
308 | access_from_map() | |
309 | { return &this->access_from_map_; } | |
310 | ||
311 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
312 | // section at DST_OFF. | |
313 | void | |
efc6fa12 | 314 | add_reference(Relobj* src_obj, |
6c77229c AM |
315 | unsigned int src_indx, |
316 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
317 | { | |
318 | Section_id src_id(src_obj, src_indx); | |
319 | this->access_from_map_[dst_off].insert(src_id); | |
320 | } | |
321 | ||
322 | // Add a reference to the code section specified by the .opd entry | |
323 | // at DST_OFF | |
324 | void | |
325 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
326 | { | |
327 | size_t ndx = this->opd_ent_ndx(dst_off); | |
328 | if (ndx >= this->opd_ent_.size()) | |
329 | this->opd_ent_.resize(ndx + 1); | |
330 | this->opd_ent_[ndx].gc_mark = true; | |
331 | } | |
332 | ||
333 | void | |
334 | process_gc_mark(Symbol_table* symtab) | |
335 | { | |
336 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
337 | if (this->opd_ent_[i].gc_mark) | |
338 | { | |
339 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 340 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
341 | } |
342 | } | |
343 | ||
dd93cd0a AM |
344 | // Return offset in output GOT section that this object will use |
345 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
346 | Address | |
347 | toc_base_offset() const | |
348 | { return 0x8000; } | |
349 | ||
d8f5a274 AM |
350 | void |
351 | set_has_small_toc_reloc() | |
352 | { has_small_toc_reloc_ = true; } | |
353 | ||
354 | bool | |
355 | has_small_toc_reloc() const | |
356 | { return has_small_toc_reloc_; } | |
357 | ||
ec661b9d AM |
358 | void |
359 | set_has_14bit_branch(unsigned int shndx) | |
360 | { | |
361 | if (shndx >= this->has14_.size()) | |
362 | this->has14_.resize(shndx + 1); | |
363 | this->has14_[shndx] = true; | |
364 | } | |
365 | ||
366 | bool | |
367 | has_14bit_branch(unsigned int shndx) const | |
368 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
369 | ||
370 | void | |
a3e60ddb | 371 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 372 | { |
a3e60ddb | 373 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 374 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 375 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
376 | } |
377 | ||
378 | Stub_table<size, big_endian>* | |
379 | stub_table(unsigned int shndx) | |
380 | { | |
a3e60ddb AM |
381 | if (shndx < this->stub_table_index_.size()) |
382 | { | |
383 | Target_powerpc<size, big_endian>* target | |
384 | = static_cast<Target_powerpc<size, big_endian>*>( | |
385 | parameters->sized_target<size, big_endian>()); | |
386 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
387 | if (indx < target->stub_tables().size()) |
388 | return target->stub_tables()[indx]; | |
a3e60ddb | 389 | } |
ec661b9d AM |
390 | return NULL; |
391 | } | |
392 | ||
a3e60ddb AM |
393 | void |
394 | clear_stub_table() | |
395 | { | |
396 | this->stub_table_index_.clear(); | |
397 | } | |
398 | ||
590b87ff AM |
399 | uint32_t |
400 | uniq() const | |
401 | { return this->uniq_; } | |
402 | ||
b4f7960d AM |
403 | int |
404 | abiversion() const | |
405 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
406 | ||
407 | // Set ABI version for input and output | |
408 | void | |
409 | set_abiversion(int ver); | |
410 | ||
7ee7ff70 AM |
411 | unsigned int |
412 | st_other (unsigned int symndx) const | |
413 | { | |
414 | return this->st_other_[symndx]; | |
415 | } | |
416 | ||
b4f7960d AM |
417 | unsigned int |
418 | ppc64_local_entry_offset(const Symbol* sym) const | |
419 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
420 | ||
421 | unsigned int | |
422 | ppc64_local_entry_offset(unsigned int symndx) const | |
423 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
424 | ||
32f59844 AM |
425 | bool |
426 | ppc64_needs_toc(const Symbol* sym) const | |
427 | { return sym->nonvis() > 1 << 3; } | |
428 | ||
429 | bool | |
430 | ppc64_needs_toc(unsigned int symndx) const | |
431 | { return this->st_other_[symndx] > 1 << 5; } | |
432 | ||
724436fc AM |
433 | // The contents of the .gnu.attributes section if there is one. |
434 | const Attributes_section_data* | |
435 | attributes_section_data() const | |
436 | { return this->attributes_section_data_; } | |
437 | ||
cf43a2fe | 438 | private: |
bfdfa4cd AM |
439 | struct Opd_ent |
440 | { | |
441 | unsigned int shndx; | |
c6de8ed4 AM |
442 | bool discard : 1; |
443 | bool gc_mark : 1; | |
26a4e9cb | 444 | Address off; |
bfdfa4cd AM |
445 | }; |
446 | ||
447 | // Return index into opd_ent_ array for .opd entry at OFF. | |
448 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
449 | // apart when the language doesn't use the last 8-byte word, the | |
450 | // environment pointer. Thus dividing the entry section offset by | |
451 | // 16 will give an index into opd_ent_ that works for either layout | |
452 | // of .opd. (It leaves some elements of the vector unused when .opd | |
453 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
454 | // until relocations are processed, and in any case it is possible | |
455 | // for an object to have some entries spaced 16 bytes apart and | |
456 | // others 24 bytes apart.) | |
c9269dff AM |
457 | size_t |
458 | opd_ent_ndx(size_t off) const | |
459 | { return off >> 4;} | |
460 | ||
590b87ff AM |
461 | // Per object unique identifier |
462 | uint32_t uniq_; | |
463 | ||
c9269dff AM |
464 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. |
465 | unsigned int special_; | |
bfdfa4cd | 466 | |
5edad15d AM |
467 | // For 64-bit the .rela.toc and .toc section shdnx. |
468 | unsigned int relatoc_; | |
469 | unsigned int toc_; | |
470 | ||
d8f5a274 AM |
471 | // For 64-bit, whether this object uses small model relocs to access |
472 | // the toc. | |
473 | bool has_small_toc_reloc_; | |
474 | ||
bfdfa4cd AM |
475 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
476 | // vector is valid. The flag could be made atomic and set in | |
477 | // do_read_relocs with memory_order_release and then tested with | |
478 | // memory_order_acquire, potentially resulting in fewer entries in | |
479 | // access_from_map_. | |
480 | bool opd_valid_; | |
481 | ||
0af4fcc2 AM |
482 | // Set when finding a __tls_get_addr call without marker relocs. |
483 | // Such a call disables GD and LD tls optimisations for the object file. | |
484 | bool no_tls_marker_; | |
485 | ||
486 | // Set when finding a __tls_get_addr call with marker relocs, or | |
487 | // when finding a relocation that needs __tls_get_addr calls with | |
488 | // marker relocs. | |
489 | bool tls_marker_; | |
490 | ||
491 | // Set when seeing a __tls_get_addr call without marker relocs after | |
492 | // seeing some __tls_get_addr calls with marker relocs. | |
493 | bool tls_opt_error_; | |
494 | ||
590b87ff AM |
495 | // Header e_flags |
496 | elfcpp::Elf_Word e_flags_; | |
497 | ||
498 | // For 64-bit, an array with one entry per 64-bit word in the .toc | |
499 | // section, set if accesses using that word cannot be optimised. | |
500 | std::vector<bool> no_toc_opt_; | |
501 | ||
c9269dff AM |
502 | // The first 8-byte word of an OPD entry gives the address of the |
503 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 504 | // relocation on this word. The following vector records the |
c9269dff | 505 | // section and offset specified by these relocations. |
bfdfa4cd AM |
506 | std::vector<Opd_ent> opd_ent_; |
507 | ||
e81fea4d | 508 | // References made to this object's .opd section when running |
bfdfa4cd AM |
509 | // gc_process_relocs for another object, before the opd_ent_ vector |
510 | // is valid for this object. | |
e81fea4d | 511 | Access_from access_from_map_; |
ec661b9d AM |
512 | |
513 | // Whether input section has a 14-bit branch reloc. | |
514 | std::vector<bool> has14_; | |
515 | ||
516 | // The stub table to use for a given input section. | |
a3e60ddb | 517 | std::vector<unsigned int> stub_table_index_; |
b4f7960d | 518 | |
b4f7960d AM |
519 | // ELF st_other field for local symbols. |
520 | std::vector<unsigned char> st_other_; | |
724436fc AM |
521 | |
522 | // Object attributes if there is a .gnu.attributes section. | |
523 | Attributes_section_data* attributes_section_data_; | |
cf43a2fe AM |
524 | }; |
525 | ||
dc3714f3 AM |
526 | template<int size, bool big_endian> |
527 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
528 | { | |
529 | public: | |
530 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
531 | ||
532 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
533 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
534 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
724436fc AM |
535 | opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_(), |
536 | attributes_section_data_(NULL) | |
b4f7960d AM |
537 | { |
538 | this->set_abiversion(0); | |
539 | } | |
dc3714f3 AM |
540 | |
541 | ~Powerpc_dynobj() | |
724436fc | 542 | { delete this->attributes_section_data_; } |
dc3714f3 AM |
543 | |
544 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
545 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
546 | void | |
547 | do_read_symbols(Read_symbols_data*); | |
548 | ||
549 | // The .opd section shndx. | |
550 | unsigned int | |
551 | opd_shndx() const | |
552 | { | |
553 | return this->opd_shndx_; | |
554 | } | |
555 | ||
556 | // The .opd section address. | |
557 | Address | |
558 | opd_address() const | |
559 | { | |
560 | return this->opd_address_; | |
561 | } | |
562 | ||
563 | // Init OPD entry arrays. | |
564 | void | |
565 | init_opd(size_t opd_size) | |
566 | { | |
567 | size_t count = this->opd_ent_ndx(opd_size); | |
568 | this->opd_ent_.resize(count); | |
569 | } | |
570 | ||
571 | // Return section and offset of function entry for .opd + R_OFF. | |
572 | unsigned int | |
573 | get_opd_ent(Address r_off, Address* value = NULL) const | |
574 | { | |
575 | size_t ndx = this->opd_ent_ndx(r_off); | |
576 | gold_assert(ndx < this->opd_ent_.size()); | |
577 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
578 | if (value != NULL) | |
579 | *value = this->opd_ent_[ndx].off; | |
580 | return this->opd_ent_[ndx].shndx; | |
581 | } | |
582 | ||
583 | // Set section and offset of function entry for .opd + R_OFF. | |
584 | void | |
585 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
586 | { | |
587 | size_t ndx = this->opd_ent_ndx(r_off); | |
588 | gold_assert(ndx < this->opd_ent_.size()); | |
589 | this->opd_ent_[ndx].shndx = shndx; | |
590 | this->opd_ent_[ndx].off = value; | |
591 | } | |
592 | ||
b4f7960d AM |
593 | int |
594 | abiversion() const | |
595 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
596 | ||
597 | // Set ABI version for input and output. | |
598 | void | |
599 | set_abiversion(int ver); | |
600 | ||
724436fc AM |
601 | // The contents of the .gnu.attributes section if there is one. |
602 | const Attributes_section_data* | |
603 | attributes_section_data() const | |
604 | { return this->attributes_section_data_; } | |
605 | ||
dc3714f3 AM |
606 | private: |
607 | // Used to specify extent of executable sections. | |
608 | struct Sec_info | |
609 | { | |
610 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
611 | : start(start_), len(len_), shndx(shndx_) | |
612 | { } | |
613 | ||
614 | bool | |
615 | operator<(const Sec_info& that) const | |
616 | { return this->start < that.start; } | |
617 | ||
618 | Address start; | |
619 | Address len; | |
620 | unsigned int shndx; | |
621 | }; | |
622 | ||
623 | struct Opd_ent | |
624 | { | |
625 | unsigned int shndx; | |
626 | Address off; | |
627 | }; | |
628 | ||
629 | // Return index into opd_ent_ array for .opd entry at OFF. | |
630 | size_t | |
631 | opd_ent_ndx(size_t off) const | |
632 | { return off >> 4;} | |
633 | ||
634 | // For 64-bit the .opd section shndx and address. | |
635 | unsigned int opd_shndx_; | |
636 | Address opd_address_; | |
637 | ||
590b87ff AM |
638 | // Header e_flags |
639 | elfcpp::Elf_Word e_flags_; | |
640 | ||
dc3714f3 AM |
641 | // The first 8-byte word of an OPD entry gives the address of the |
642 | // entry point of the function. Records the section and offset | |
643 | // corresponding to the address. Note that in dynamic objects, | |
644 | // offset is *not* relative to the section. | |
645 | std::vector<Opd_ent> opd_ent_; | |
724436fc AM |
646 | |
647 | // Object attributes if there is a .gnu.attributes section. | |
648 | Attributes_section_data* attributes_section_data_; | |
dc3714f3 AM |
649 | }; |
650 | ||
5edad15d AM |
651 | // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the |
652 | // base class will emit. | |
653 | ||
654 | template<int sh_type, int size, bool big_endian> | |
655 | class Powerpc_copy_relocs : public Copy_relocs<sh_type, size, big_endian> | |
656 | { | |
657 | public: | |
658 | Powerpc_copy_relocs() | |
659 | : Copy_relocs<sh_type, size, big_endian>(elfcpp::R_POWERPC_COPY) | |
660 | { } | |
661 | ||
662 | // Emit any saved relocations which turn out to be needed. This is | |
663 | // called after all the relocs have been scanned. | |
664 | void | |
665 | emit(Output_data_reloc<sh_type, true, size, big_endian>*); | |
666 | }; | |
667 | ||
42cacb20 DE |
668 | template<int size, bool big_endian> |
669 | class Target_powerpc : public Sized_target<size, big_endian> | |
670 | { | |
671 | public: | |
d83ce4e3 AM |
672 | typedef |
673 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 674 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 675 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
7e57d19e | 676 | typedef Unordered_set<Symbol_location, Symbol_location_hash> Tocsave_loc; |
c9269dff | 677 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
678 | // Offset of tp and dtp pointers from start of TLS block. |
679 | static const Address tp_offset = 0x7000; | |
680 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
681 | |
682 | Target_powerpc() | |
683 | : Sized_target<size, big_endian>(&powerpc_info), | |
2d7ad24e | 684 | got_(NULL), plt_(NULL), iplt_(NULL), lplt_(NULL), brlt_section_(NULL), |
5edad15d | 685 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(), |
43819297 | 686 | tlsld_got_offset_(-1U), |
7e57d19e | 687 | stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), |
63e5eea2 | 688 | power10_relocs_(false), plt_thread_safe_(false), plt_localentry0_(false), |
7ee7ff70 | 689 | plt_localentry0_init_(false), has_localentry0_(false), |
4e0e019f | 690 | has_tls_get_addr_opt_(false), no_tprel_opt_(false), |
7ee7ff70 | 691 | relax_failed_(false), relax_fail_count_(0), |
34e0882b | 692 | stub_group_size_(0), savres_section_(0), |
724436fc AM |
693 | tls_get_addr_(NULL), tls_get_addr_opt_(NULL), |
694 | attributes_section_data_(NULL), | |
695 | last_fp_(NULL), last_ld_(NULL), last_vec_(NULL), last_struct_(NULL) | |
42cacb20 DE |
696 | { |
697 | } | |
698 | ||
2e702c99 | 699 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
700 | // garbage collection. |
701 | void | |
ad0f2072 | 702 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
703 | Layout* layout, |
704 | Sized_relobj_file<size, big_endian>* object, | |
705 | unsigned int data_shndx, | |
706 | unsigned int sh_type, | |
707 | const unsigned char* prelocs, | |
708 | size_t reloc_count, | |
709 | Output_section* output_section, | |
710 | bool needs_special_offset_handling, | |
711 | size_t local_symbol_count, | |
712 | const unsigned char* plocal_symbols); | |
6d03d481 | 713 | |
42cacb20 DE |
714 | // Scan the relocations to look for symbol adjustments. |
715 | void | |
ad0f2072 | 716 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 717 | Layout* layout, |
6fa2a40b | 718 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
719 | unsigned int data_shndx, |
720 | unsigned int sh_type, | |
721 | const unsigned char* prelocs, | |
722 | size_t reloc_count, | |
723 | Output_section* output_section, | |
724 | bool needs_special_offset_handling, | |
725 | size_t local_symbol_count, | |
726 | const unsigned char* plocal_symbols); | |
921b5322 AM |
727 | |
728 | // Map input .toc section to output .got section. | |
729 | const char* | |
730 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
731 | { | |
732 | if (size == 64 && strcmp(name, ".toc") == 0) | |
733 | { | |
734 | *plen = 4; | |
735 | return ".got"; | |
736 | } | |
737 | return NULL; | |
738 | } | |
739 | ||
f3a0ed29 AM |
740 | // Provide linker defined save/restore functions. |
741 | void | |
742 | define_save_restore_funcs(Layout*, Symbol_table*); | |
743 | ||
ec661b9d AM |
744 | // No stubs unless a final link. |
745 | bool | |
746 | do_may_relax() const | |
747 | { return !parameters->options().relocatable(); } | |
748 | ||
749 | bool | |
750 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
751 | ||
9d5781f8 AM |
752 | void |
753 | do_plt_fde_location(const Output_data*, unsigned char*, | |
754 | uint64_t*, off_t*) const; | |
755 | ||
ec661b9d AM |
756 | // Stash info about branches, for stub generation. |
757 | void | |
758 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
759 | unsigned int data_shndx, Address r_offset, | |
760 | unsigned int r_type, unsigned int r_sym, Address addend) | |
761 | { | |
762 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
763 | this->branch_info_.push_back(info); | |
764 | if (r_type == elfcpp::R_POWERPC_REL14 | |
765 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
766 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
767 | ppc_object->set_has_14bit_branch(data_shndx); | |
768 | } | |
769 | ||
7e57d19e AM |
770 | // Return whether the last branch is a plt call, and if so, mark the |
771 | // branch as having an R_PPC64_TOCSAVE. | |
772 | bool | |
773 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
774 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
775 | { | |
776 | return (size == 64 | |
777 | && !this->branch_info_.empty() | |
778 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
779 | r_offset, this, symtab)); | |
780 | } | |
781 | ||
782 | // Say the given location, that of a nop in a function prologue with | |
783 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
784 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
785 | void | |
786 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
787 | unsigned int shndx, Address offset) | |
788 | { | |
789 | Symbol_location loc; | |
790 | loc.object = ppc_object; | |
791 | loc.shndx = shndx; | |
792 | loc.offset = offset; | |
793 | this->tocsave_loc_.insert(loc); | |
794 | } | |
795 | ||
796 | // Accessor | |
b0d0d02b | 797 | const Tocsave_loc* |
7e57d19e AM |
798 | tocsave_loc() const |
799 | { | |
b0d0d02b | 800 | return &this->tocsave_loc_; |
7e57d19e AM |
801 | } |
802 | ||
f43ba157 AM |
803 | void |
804 | do_define_standard_symbols(Symbol_table*, Layout*); | |
805 | ||
42cacb20 DE |
806 | // Finalize the sections. |
807 | void | |
f59f41f3 | 808 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
809 | |
810 | // Return the value to use for a dynamic which requires special | |
811 | // treatment. | |
812 | uint64_t | |
813 | do_dynsym_value(const Symbol*) const; | |
814 | ||
c9824451 AM |
815 | // Return the PLT address to use for a local symbol. |
816 | uint64_t | |
817 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
818 | ||
819 | // Return the PLT address to use for a global symbol. | |
820 | uint64_t | |
821 | do_plt_address_for_global(const Symbol*) const; | |
822 | ||
bd73a62d AM |
823 | // Return the offset to use for the GOT_INDX'th got entry which is |
824 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
825 | int64_t | |
826 | do_tls_offset_for_local(const Relobj* object, | |
827 | unsigned int symndx, | |
828 | unsigned int got_indx) const; | |
829 | ||
830 | // Return the offset to use for the GOT_INDX'th got entry which is | |
831 | // for global tls symbol GSYM. | |
832 | int64_t | |
833 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
834 | ||
dc3714f3 AM |
835 | void |
836 | do_function_location(Symbol_location*) const; | |
837 | ||
4d9aa155 AM |
838 | bool |
839 | do_can_check_for_function_pointers() const | |
840 | { return true; } | |
841 | ||
bbec1a5d AM |
842 | // Adjust -fsplit-stack code which calls non-split-stack code. |
843 | void | |
844 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
845 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 846 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
847 | unsigned char* view, section_size_type view_size, |
848 | std::string* from, std::string* to) const; | |
849 | ||
42cacb20 DE |
850 | // Relocate a section. |
851 | void | |
852 | relocate_section(const Relocate_info<size, big_endian>*, | |
853 | unsigned int sh_type, | |
854 | const unsigned char* prelocs, | |
855 | size_t reloc_count, | |
856 | Output_section* output_section, | |
857 | bool needs_special_offset_handling, | |
858 | unsigned char* view, | |
c9269dff | 859 | Address view_address, |
364c7fa5 ILT |
860 | section_size_type view_size, |
861 | const Reloc_symbol_changes*); | |
42cacb20 DE |
862 | |
863 | // Scan the relocs during a relocatable link. | |
864 | void | |
ad0f2072 | 865 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 866 | Layout* layout, |
6fa2a40b | 867 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
868 | unsigned int data_shndx, |
869 | unsigned int sh_type, | |
870 | const unsigned char* prelocs, | |
871 | size_t reloc_count, | |
872 | Output_section* output_section, | |
873 | bool needs_special_offset_handling, | |
874 | size_t local_symbol_count, | |
875 | const unsigned char* plocal_symbols, | |
876 | Relocatable_relocs*); | |
877 | ||
4d625b70 CC |
878 | // Scan the relocs for --emit-relocs. |
879 | void | |
880 | emit_relocs_scan(Symbol_table* symtab, | |
881 | Layout* layout, | |
882 | Sized_relobj_file<size, big_endian>* object, | |
883 | unsigned int data_shndx, | |
884 | unsigned int sh_type, | |
885 | const unsigned char* prelocs, | |
886 | size_t reloc_count, | |
887 | Output_section* output_section, | |
888 | bool needs_special_offset_handling, | |
889 | size_t local_symbol_count, | |
890 | const unsigned char* plocal_syms, | |
891 | Relocatable_relocs* rr); | |
892 | ||
7404fe1b | 893 | // Emit relocations for a section. |
42cacb20 | 894 | void |
7404fe1b AM |
895 | relocate_relocs(const Relocate_info<size, big_endian>*, |
896 | unsigned int sh_type, | |
897 | const unsigned char* prelocs, | |
898 | size_t reloc_count, | |
899 | Output_section* output_section, | |
62fe925a RM |
900 | typename elfcpp::Elf_types<size>::Elf_Off |
901 | offset_in_output_section, | |
7404fe1b AM |
902 | unsigned char*, |
903 | Address view_address, | |
904 | section_size_type, | |
905 | unsigned char* reloc_view, | |
906 | section_size_type reloc_view_size); | |
42cacb20 DE |
907 | |
908 | // Return whether SYM is defined by the ABI. | |
909 | bool | |
9c2d0ef9 | 910 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 911 | { |
cf43a2fe | 912 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
913 | } |
914 | ||
915 | // Return the size of the GOT section. | |
916 | section_size_type | |
0e70b911 | 917 | got_size() const |
42cacb20 DE |
918 | { |
919 | gold_assert(this->got_ != NULL); | |
920 | return this->got_->data_size(); | |
921 | } | |
922 | ||
cf43a2fe AM |
923 | // Get the PLT section. |
924 | const Output_data_plt_powerpc<size, big_endian>* | |
925 | plt_section() const | |
926 | { | |
927 | gold_assert(this->plt_ != NULL); | |
928 | return this->plt_; | |
929 | } | |
930 | ||
e5d5f5ed AM |
931 | // Get the IPLT section. |
932 | const Output_data_plt_powerpc<size, big_endian>* | |
933 | iplt_section() const | |
934 | { | |
935 | gold_assert(this->iplt_ != NULL); | |
936 | return this->iplt_; | |
937 | } | |
938 | ||
2d7ad24e AM |
939 | // Get the LPLT section. |
940 | const Output_data_plt_powerpc<size, big_endian>* | |
941 | lplt_section() const | |
942 | { | |
943 | return this->lplt_; | |
944 | } | |
945 | ||
08be3224 AM |
946 | // Return the plt offset and section for the given global sym. |
947 | Address | |
948 | plt_off(const Symbol* gsym, | |
949 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
950 | { | |
951 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
952 | && gsym->can_use_relative_reloc(false)) | |
953 | *sec = this->iplt_section(); | |
954 | else | |
955 | *sec = this->plt_section(); | |
956 | return gsym->plt_offset(); | |
957 | } | |
958 | ||
959 | // Return the plt offset and section for the given local sym. | |
960 | Address | |
961 | plt_off(const Sized_relobj_file<size, big_endian>* relobj, | |
962 | unsigned int local_sym_index, | |
963 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
964 | { | |
2d7ad24e AM |
965 | const Symbol_value<size>* lsym = relobj->local_symbol(local_sym_index); |
966 | if (lsym->is_ifunc_symbol()) | |
967 | *sec = this->iplt_section(); | |
968 | else | |
969 | *sec = this->lplt_section(); | |
08be3224 AM |
970 | return relobj->local_plt_offset(local_sym_index); |
971 | } | |
972 | ||
cf43a2fe AM |
973 | // Get the .glink section. |
974 | const Output_data_glink<size, big_endian>* | |
975 | glink_section() const | |
976 | { | |
977 | gold_assert(this->glink_ != NULL); | |
978 | return this->glink_; | |
979 | } | |
980 | ||
9055360d AM |
981 | Output_data_glink<size, big_endian>* |
982 | glink_section() | |
983 | { | |
984 | gold_assert(this->glink_ != NULL); | |
985 | return this->glink_; | |
986 | } | |
987 | ||
9d5781f8 AM |
988 | bool has_glink() const |
989 | { return this->glink_ != NULL; } | |
990 | ||
cf43a2fe AM |
991 | // Get the GOT section. |
992 | const Output_data_got_powerpc<size, big_endian>* | |
993 | got_section() const | |
994 | { | |
995 | gold_assert(this->got_ != NULL); | |
996 | return this->got_; | |
997 | } | |
998 | ||
26a4e9cb AM |
999 | // Get the GOT section, creating it if necessary. |
1000 | Output_data_got_powerpc<size, big_endian>* | |
1001 | got_section(Symbol_table*, Layout*); | |
1002 | ||
cf43a2fe AM |
1003 | Object* |
1004 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
1005 | const elfcpp::Ehdr<size, big_endian>&); | |
1006 | ||
0e70b911 CC |
1007 | // Return the number of entries in the GOT. |
1008 | unsigned int | |
1009 | got_entry_count() const | |
1010 | { | |
1011 | if (this->got_ == NULL) | |
1012 | return 0; | |
1013 | return this->got_size() / (size / 8); | |
1014 | } | |
1015 | ||
1016 | // Return the number of entries in the PLT. | |
1017 | unsigned int | |
1018 | plt_entry_count() const; | |
1019 | ||
1020 | // Return the offset of the first non-reserved PLT entry. | |
1021 | unsigned int | |
b4f7960d AM |
1022 | first_plt_entry_offset() const |
1023 | { | |
1024 | if (size == 32) | |
1025 | return 0; | |
1026 | if (this->abiversion() >= 2) | |
1027 | return 16; | |
1028 | return 24; | |
1029 | } | |
0e70b911 CC |
1030 | |
1031 | // Return the size of each PLT entry. | |
1032 | unsigned int | |
b4f7960d AM |
1033 | plt_entry_size() const |
1034 | { | |
1035 | if (size == 32) | |
1036 | return 4; | |
1037 | if (this->abiversion() >= 2) | |
1038 | return 8; | |
1039 | return 24; | |
1040 | } | |
0e70b911 | 1041 | |
d49044c7 AM |
1042 | Output_data_save_res<size, big_endian>* |
1043 | savres_section() const | |
1044 | { | |
1045 | return this->savres_section_; | |
1046 | } | |
1047 | ||
e81fea4d AM |
1048 | // Add any special sections for this symbol to the gc work list. |
1049 | // For powerpc64, this adds the code section of a function | |
1050 | // descriptor. | |
1051 | void | |
1052 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
1053 | ||
1054 | // Handle target specific gc actions when adding a gc reference from | |
1055 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
1056 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
1057 | // section of a function descriptor. | |
1058 | void | |
1059 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 1060 | Relobj* src_obj, |
e81fea4d | 1061 | unsigned int src_shndx, |
efc6fa12 | 1062 | Relobj* dst_obj, |
e81fea4d AM |
1063 | unsigned int dst_shndx, |
1064 | Address dst_off) const; | |
1065 | ||
ec661b9d AM |
1066 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
1067 | const Stub_tables& | |
1068 | stub_tables() const | |
1069 | { return this->stub_tables_; } | |
1070 | ||
1071 | const Output_data_brlt_powerpc<size, big_endian>* | |
1072 | brlt_section() const | |
1073 | { return this->brlt_section_; } | |
1074 | ||
1075 | void | |
1076 | add_branch_lookup_table(Address to) | |
1077 | { | |
1078 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
1079 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
1080 | } | |
1081 | ||
1082 | Address | |
1083 | find_branch_lookup_table(Address to) | |
1084 | { | |
1085 | typename Branch_lookup_table::const_iterator p | |
1086 | = this->branch_lookup_table_.find(to); | |
1087 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
1088 | } | |
1089 | ||
1090 | void | |
1091 | write_branch_lookup_table(unsigned char *oview) | |
1092 | { | |
1093 | for (typename Branch_lookup_table::const_iterator p | |
1094 | = this->branch_lookup_table_.begin(); | |
1095 | p != this->branch_lookup_table_.end(); | |
1096 | ++p) | |
1097 | { | |
4d5effb9 | 1098 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
1099 | } |
1100 | } | |
1101 | ||
590b87ff AM |
1102 | // Wrapper used after relax to define a local symbol in output data, |
1103 | // from the end if value < 0. | |
1104 | void | |
1105 | define_local(Symbol_table* symtab, const char* name, | |
1106 | Output_data* od, Address value, unsigned int symsize) | |
1107 | { | |
1108 | Symbol* sym | |
1109 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
1110 | od, value, symsize, elfcpp::STT_NOTYPE, | |
1111 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1112 | static_cast<Signed_address>(value) < 0, | |
1113 | false); | |
1114 | // We are creating this symbol late, so need to fix up things | |
1115 | // done early in Layout::finalize. | |
1116 | sym->set_dynsym_index(-1U); | |
1117 | } | |
1118 | ||
63e5eea2 AM |
1119 | void |
1120 | set_power10_relocs() | |
1121 | { | |
1122 | this->power10_relocs_ = true; | |
1123 | } | |
1124 | ||
e4dff765 | 1125 | bool |
7c1f4227 | 1126 | power10_stubs() const |
e4dff765 | 1127 | { |
63e5eea2 AM |
1128 | return (this->power10_relocs_ |
1129 | && (parameters->options().power10_stubs_enum() | |
1130 | != General_options::POWER10_STUBS_NO)); | |
afd2ea23 AM |
1131 | } |
1132 | ||
1133 | bool | |
1134 | power10_stubs_auto() const | |
1135 | { | |
1136 | return (parameters->options().power10_stubs_enum() | |
1137 | == General_options::POWER10_STUBS_AUTO); | |
e4dff765 AM |
1138 | } |
1139 | ||
9e69ed50 AM |
1140 | bool |
1141 | plt_thread_safe() const | |
1142 | { return this->plt_thread_safe_; } | |
1143 | ||
7ee7ff70 AM |
1144 | bool |
1145 | plt_localentry0() const | |
1146 | { return this->plt_localentry0_; } | |
1147 | ||
63e5eea2 AM |
1148 | bool |
1149 | has_localentry0() const | |
1150 | { return this->has_localentry0_; } | |
1151 | ||
7ee7ff70 AM |
1152 | void |
1153 | set_has_localentry0() | |
1154 | { | |
1155 | this->has_localentry0_ = true; | |
1156 | } | |
1157 | ||
1158 | bool | |
1159 | is_elfv2_localentry0(const Symbol* gsym) const | |
1160 | { | |
1161 | return (size == 64 | |
1162 | && this->abiversion() >= 2 | |
1163 | && this->plt_localentry0() | |
1164 | && gsym->type() == elfcpp::STT_FUNC | |
1165 | && gsym->is_defined() | |
565ed01a AM |
1166 | && gsym->nonvis() >> 3 == 0 |
1167 | && !gsym->non_zero_localentry()); | |
7ee7ff70 AM |
1168 | } |
1169 | ||
1170 | bool | |
1171 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1172 | unsigned int r_sym) const | |
1173 | { | |
1174 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1175 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1176 | ||
1177 | if (size == 64 | |
1178 | && this->abiversion() >= 2 | |
1179 | && this->plt_localentry0() | |
1180 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1181 | { | |
1182 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1183 | bool is_ordinary; | |
1184 | if (!psymval->is_ifunc_symbol() | |
1185 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1186 | && is_ordinary) | |
1187 | return true; | |
1188 | } | |
1189 | return false; | |
1190 | } | |
1191 | ||
252dcdf4 AM |
1192 | bool |
1193 | tprel_opt() const | |
4e0e019f | 1194 | { return !this->no_tprel_opt_ && parameters->options().tls_optimize(); } |
252dcdf4 AM |
1195 | |
1196 | void | |
4e0e019f AM |
1197 | set_no_tprel_opt() |
1198 | { this->no_tprel_opt_ = true; } | |
252dcdf4 | 1199 | |
565ed01a AM |
1200 | // Remember any symbols seen with non-zero localentry, even those |
1201 | // not providing a definition | |
1202 | bool | |
1203 | resolve(Symbol* to, const elfcpp::Sym<size, big_endian>& sym, Object*, | |
1204 | const char*) | |
1205 | { | |
1206 | if (size == 64) | |
1207 | { | |
1208 | unsigned char st_other = sym.get_st_other(); | |
1209 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1210 | to->set_non_zero_localentry(); | |
1211 | } | |
1212 | // We haven't resolved anything, continue normal processing. | |
1213 | return false; | |
1214 | } | |
1215 | ||
b4f7960d | 1216 | int |
aacb3b6d | 1217 | abiversion() const |
b4f7960d AM |
1218 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } |
1219 | ||
1220 | void | |
aacb3b6d | 1221 | set_abiversion(int ver) |
b4f7960d AM |
1222 | { |
1223 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1224 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1225 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1226 | this->set_processor_specific_flags(flags); | |
1227 | } | |
1228 | ||
34e0882b AM |
1229 | Symbol* |
1230 | tls_get_addr_opt() const | |
1231 | { return this->tls_get_addr_opt_; } | |
1232 | ||
1233 | Symbol* | |
1234 | tls_get_addr() const | |
1235 | { return this->tls_get_addr_; } | |
1236 | ||
1237 | // If optimizing __tls_get_addr calls, whether this is the | |
1238 | // "__tls_get_addr" symbol. | |
1239 | bool | |
1240 | is_tls_get_addr_opt(const Symbol* gsym) const | |
1241 | { | |
1242 | return this->tls_get_addr_opt_ && (gsym == this->tls_get_addr_ | |
1243 | || gsym == this->tls_get_addr_opt_); | |
1244 | } | |
1245 | ||
1246 | bool | |
1247 | replace_tls_get_addr(const Symbol* gsym) const | |
1248 | { return this->tls_get_addr_opt_ && gsym == this->tls_get_addr_; } | |
1249 | ||
1250 | void | |
1251 | set_has_tls_get_addr_opt() | |
1252 | { this->has_tls_get_addr_opt_ = true; } | |
1253 | ||
aacb3b6d | 1254 | // Offset to toc save stack slot |
b4f7960d | 1255 | int |
aacb3b6d | 1256 | stk_toc() const |
b4f7960d AM |
1257 | { return this->abiversion() < 2 ? 40 : 24; } |
1258 | ||
34e0882b AM |
1259 | // Offset to linker save stack slot. ELFv2 doesn't have a linker word, |
1260 | // so use the CR save slot. Used only by __tls_get_addr call stub, | |
1261 | // relying on __tls_get_addr not saving CR itself. | |
1262 | int | |
1263 | stk_linker() const | |
1264 | { return this->abiversion() < 2 ? 32 : 8; } | |
1265 | ||
724436fc AM |
1266 | // Merge object attributes from input object with those in the output. |
1267 | void | |
6f3fe02b | 1268 | merge_object_attributes(const Object*, const Attributes_section_data*); |
724436fc | 1269 | |
42cacb20 DE |
1270 | private: |
1271 | ||
e3deeb9c AM |
1272 | class Track_tls |
1273 | { | |
1274 | public: | |
1275 | enum Tls_get_addr | |
1276 | { | |
1277 | NOT_EXPECTED = 0, | |
1278 | EXPECTED = 1, | |
1279 | SKIP = 2, | |
1280 | NORMAL = 3 | |
1281 | }; | |
1282 | ||
1283 | Track_tls() | |
aacb3b6d | 1284 | : tls_get_addr_state_(NOT_EXPECTED), |
e3deeb9c AM |
1285 | relinfo_(NULL), relnum_(0), r_offset_(0) |
1286 | { } | |
1287 | ||
1288 | ~Track_tls() | |
1289 | { | |
aacb3b6d | 1290 | if (this->tls_get_addr_state_ != NOT_EXPECTED) |
e3deeb9c AM |
1291 | this->missing(); |
1292 | } | |
1293 | ||
1294 | void | |
1295 | missing(void) | |
1296 | { | |
1297 | if (this->relinfo_ != NULL) | |
1298 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1299 | _("missing expected __tls_get_addr call")); | |
1300 | } | |
1301 | ||
1302 | void | |
1303 | expect_tls_get_addr_call( | |
1304 | const Relocate_info<size, big_endian>* relinfo, | |
1305 | size_t relnum, | |
1306 | Address r_offset) | |
1307 | { | |
aacb3b6d | 1308 | this->tls_get_addr_state_ = EXPECTED; |
e3deeb9c AM |
1309 | this->relinfo_ = relinfo; |
1310 | this->relnum_ = relnum; | |
1311 | this->r_offset_ = r_offset; | |
1312 | } | |
1313 | ||
1314 | void | |
1315 | expect_tls_get_addr_call() | |
aacb3b6d | 1316 | { this->tls_get_addr_state_ = EXPECTED; } |
e3deeb9c AM |
1317 | |
1318 | void | |
1319 | skip_next_tls_get_addr_call() | |
aacb3b6d | 1320 | {this->tls_get_addr_state_ = SKIP; } |
e3deeb9c AM |
1321 | |
1322 | Tls_get_addr | |
34e0882b AM |
1323 | maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, |
1324 | unsigned int r_type, const Symbol* gsym) | |
e3deeb9c | 1325 | { |
32f59844 AM |
1326 | bool is_tls_call |
1327 | = ((r_type == elfcpp::R_POWERPC_REL24 | |
1328 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) | |
1329 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1330 | || is_plt16_reloc<size>(r_type) | |
e4dff765 AM |
1331 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 |
1332 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
32f59844 AM |
1333 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
1334 | || r_type == elfcpp::R_POWERPC_PLTCALL | |
1335 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC | |
1336 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
1337 | && gsym != NULL | |
1338 | && (gsym == target->tls_get_addr() | |
1339 | || gsym == target->tls_get_addr_opt())); | |
aacb3b6d AM |
1340 | Tls_get_addr last_tls = this->tls_get_addr_state_; |
1341 | this->tls_get_addr_state_ = NOT_EXPECTED; | |
e3deeb9c AM |
1342 | if (is_tls_call && last_tls != EXPECTED) |
1343 | return last_tls; | |
1344 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1345 | { | |
1346 | this->missing(); | |
1347 | return EXPECTED; | |
1348 | } | |
1349 | return NORMAL; | |
1350 | } | |
1351 | ||
1352 | private: | |
1353 | // What we're up to regarding calls to __tls_get_addr. | |
1354 | // On powerpc, the branch and link insn making a call to | |
1355 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1356 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
32f59844 | 1357 | // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call. |
e3deeb9c AM |
1358 | // The marker relocation always comes first, and has the same |
1359 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1360 | // argument. This ties the arg setup insn with the call insn, | |
1361 | // allowing ld to safely optimize away the call. We check that | |
1362 | // every call to __tls_get_addr has a marker relocation, and that | |
1363 | // every marker relocation is on a call to __tls_get_addr. | |
aacb3b6d | 1364 | Tls_get_addr tls_get_addr_state_; |
e3deeb9c AM |
1365 | // Info about the last reloc for error message. |
1366 | const Relocate_info<size, big_endian>* relinfo_; | |
1367 | size_t relnum_; | |
1368 | Address r_offset_; | |
1369 | }; | |
1370 | ||
42cacb20 | 1371 | // The class which scans relocations. |
e3deeb9c | 1372 | class Scan : protected Track_tls |
42cacb20 DE |
1373 | { |
1374 | public: | |
bfdfa4cd AM |
1375 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1376 | ||
42cacb20 | 1377 | Scan() |
e3deeb9c | 1378 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1379 | { } |
1380 | ||
95a2c8d6 | 1381 | static inline int |
88b8e639 | 1382 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1383 | |
42cacb20 | 1384 | inline void |
ad0f2072 | 1385 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1386 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1387 | unsigned int data_shndx, |
1388 | Output_section* output_section, | |
1389 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1390 | const elfcpp::Sym<size, big_endian>& lsym, |
1391 | bool is_discarded); | |
42cacb20 DE |
1392 | |
1393 | inline void | |
ad0f2072 | 1394 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1395 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1396 | unsigned int data_shndx, |
1397 | Output_section* output_section, | |
1398 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1399 | Symbol* gsym); | |
1400 | ||
21bb3914 ST |
1401 | inline bool |
1402 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1403 | Target_powerpc* , | |
f6971787 | 1404 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1405 | unsigned int , |
2e702c99 RM |
1406 | Output_section* , |
1407 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1408 | unsigned int r_type, |
2e702c99 | 1409 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1410 | { |
1411 | // PowerPC64 .opd is not folded, so any identical function text | |
1412 | // may be folded and we'll still keep function addresses distinct. | |
1413 | // That means no reloc is of concern here. | |
1414 | if (size == 64) | |
f6971787 AM |
1415 | { |
1416 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1417 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1418 | if (ppcobj->abiversion() == 1) | |
1419 | return false; | |
1420 | } | |
1421 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 | 1422 | // function code might be taking the address of the function. |
32f59844 | 1423 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1424 | } |
21bb3914 ST |
1425 | |
1426 | inline bool | |
1427 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1428 | Target_powerpc* , | |
f6971787 | 1429 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1430 | unsigned int , |
1431 | Output_section* , | |
4d9aa155 AM |
1432 | const elfcpp::Rela<size, big_endian>& , |
1433 | unsigned int r_type, | |
1434 | Symbol*) | |
1435 | { | |
1436 | // As above. | |
1437 | if (size == 64) | |
f6971787 AM |
1438 | { |
1439 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1440 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1441 | if (ppcobj->abiversion() == 1) | |
1442 | return false; | |
1443 | } | |
32f59844 | 1444 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1445 | } |
21bb3914 | 1446 | |
b3ccdeb5 | 1447 | static bool |
9055360d AM |
1448 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1449 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1450 | unsigned int r_type, bool report_err); |
1451 | ||
42cacb20 DE |
1452 | private: |
1453 | static void | |
6fa2a40b | 1454 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1455 | unsigned int r_type); |
1456 | ||
1457 | static void | |
6fa2a40b | 1458 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1459 | unsigned int r_type, Symbol*); |
1460 | ||
1461 | static void | |
1462 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1463 | Target_powerpc* target); | |
1464 | ||
1465 | void | |
1466 | check_non_pic(Relobj*, unsigned int r_type); | |
1467 | ||
1468 | // Whether we have issued an error about a non-PIC compilation. | |
1469 | bool issued_non_pic_error_; | |
1470 | }; | |
1471 | ||
1611bc4a AM |
1472 | bool |
1473 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1474 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1475 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1476 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1477 | |
42cacb20 | 1478 | // The class which implements relocation. |
e3deeb9c | 1479 | class Relocate : protected Track_tls |
42cacb20 DE |
1480 | { |
1481 | public: | |
dd93cd0a AM |
1482 | // Use 'at' branch hints when true, 'y' when false. |
1483 | // FIXME maybe: set this with an option. | |
1484 | static const bool is_isa_v2 = true; | |
1485 | ||
dd93cd0a | 1486 | Relocate() |
e3deeb9c | 1487 | : Track_tls() |
dd93cd0a AM |
1488 | { } |
1489 | ||
42cacb20 DE |
1490 | // Do a relocation. Return false if the caller should not issue |
1491 | // any warnings about this relocation. | |
1492 | inline bool | |
91a65d2f AM |
1493 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1494 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1495 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1496 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1497 | section_size_type); |
42cacb20 DE |
1498 | }; |
1499 | ||
168a4726 AM |
1500 | class Relocate_comdat_behavior |
1501 | { | |
1502 | public: | |
1503 | // Decide what the linker should do for relocations that refer to | |
1504 | // discarded comdat sections. | |
1505 | inline Comdat_behavior | |
1506 | get(const char* name) | |
1507 | { | |
1508 | gold::Default_comdat_behavior default_behavior; | |
1509 | Comdat_behavior ret = default_behavior.get(name); | |
43193fe9 | 1510 | if (ret == CB_ERROR) |
168a4726 AM |
1511 | { |
1512 | if (size == 32 | |
1513 | && (strcmp(name, ".fixup") == 0 | |
1514 | || strcmp(name, ".got2") == 0)) | |
1515 | ret = CB_IGNORE; | |
1516 | if (size == 64 | |
1517 | && (strcmp(name, ".opd") == 0 | |
1518 | || strcmp(name, ".toc") == 0 | |
1519 | || strcmp(name, ".toc1") == 0)) | |
1520 | ret = CB_IGNORE; | |
1521 | } | |
1522 | return ret; | |
1523 | } | |
1524 | }; | |
1525 | ||
dd93cd0a AM |
1526 | // Optimize the TLS relocation type based on what we know about the |
1527 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1528 | // known at link time. | |
1529 | ||
1530 | tls::Tls_optimization | |
1531 | optimize_tls_gd(bool is_final) | |
1532 | { | |
1533 | // If we are generating a shared library, then we can't do anything | |
1534 | // in the linker. | |
aacb3b6d AM |
1535 | if (parameters->options().shared() |
1536 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1537 | return tls::TLSOPT_NONE; |
1538 | ||
1539 | if (!is_final) | |
1540 | return tls::TLSOPT_TO_IE; | |
1541 | return tls::TLSOPT_TO_LE; | |
1542 | } | |
1543 | ||
1544 | tls::Tls_optimization | |
1545 | optimize_tls_ld() | |
1546 | { | |
aacb3b6d AM |
1547 | if (parameters->options().shared() |
1548 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1549 | return tls::TLSOPT_NONE; |
1550 | ||
1551 | return tls::TLSOPT_TO_LE; | |
1552 | } | |
1553 | ||
1554 | tls::Tls_optimization | |
1555 | optimize_tls_ie(bool is_final) | |
1556 | { | |
aacb3b6d AM |
1557 | if (!is_final |
1558 | || parameters->options().shared() | |
1559 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1560 | return tls::TLSOPT_NONE; |
1561 | ||
1562 | return tls::TLSOPT_TO_LE; | |
1563 | } | |
cf43a2fe | 1564 | |
cf43a2fe AM |
1565 | // Create glink. |
1566 | void | |
1567 | make_glink_section(Layout*); | |
42cacb20 | 1568 | |
cf43a2fe AM |
1569 | // Create the PLT section. |
1570 | void | |
40b469d7 | 1571 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1572 | |
e5d5f5ed | 1573 | void |
40b469d7 | 1574 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1575 | |
2d7ad24e AM |
1576 | void |
1577 | make_lplt_section(Layout*); | |
1578 | ||
ec661b9d AM |
1579 | void |
1580 | make_brlt_section(Layout*); | |
1581 | ||
42cacb20 DE |
1582 | // Create a PLT entry for a global symbol. |
1583 | void | |
ec661b9d | 1584 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1585 | |
1586 | // Create a PLT entry for a local IFUNC symbol. | |
1587 | void | |
40b469d7 | 1588 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1589 | Sized_relobj_file<size, big_endian>*, |
1590 | unsigned int); | |
1591 | ||
2d7ad24e AM |
1592 | // Create a PLT entry for a local non-IFUNC symbol. |
1593 | void | |
1594 | make_local_plt_entry(Layout*, | |
1595 | Sized_relobj_file<size, big_endian>*, | |
1596 | unsigned int); | |
1597 | ||
42cacb20 | 1598 | |
dd93cd0a AM |
1599 | // Create a GOT entry for local dynamic __tls_get_addr. |
1600 | unsigned int | |
1601 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1602 | Sized_relobj_file<size, big_endian>* object); | |
1603 | ||
42cacb20 | 1604 | unsigned int |
dd93cd0a AM |
1605 | tlsld_got_offset() const |
1606 | { | |
1607 | return this->tlsld_got_offset_; | |
1608 | } | |
42cacb20 | 1609 | |
42cacb20 DE |
1610 | // Get the dynamic reloc section, creating it if necessary. |
1611 | Reloc_section* | |
1612 | rela_dyn_section(Layout*); | |
1613 | ||
b3ccdeb5 AM |
1614 | // Similarly, but for ifunc symbols get the one for ifunc. |
1615 | Reloc_section* | |
1616 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1617 | ||
42cacb20 DE |
1618 | // Copy a relocation against a global symbol. |
1619 | void | |
ef9beddf | 1620 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1621 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1622 | unsigned int shndx, Output_section* output_section, |
1623 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1624 | { | |
859d7987 | 1625 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1626 | this->copy_relocs_.copy_reloc(symtab, layout, |
1627 | symtab->get_sized_symbol<size>(sym), | |
1628 | object, shndx, output_section, | |
859d7987 CC |
1629 | r_type, reloc.get_r_offset(), |
1630 | reloc.get_r_addend(), | |
1631 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1632 | } |
1633 | ||
0cfdc767 | 1634 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1635 | void |
a3e60ddb | 1636 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1637 | |
1638 | // Sort output sections by address. | |
1639 | struct Sort_sections | |
1640 | { | |
1641 | bool | |
1642 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1643 | { return sec1->address() < sec2->address(); } | |
1644 | }; | |
1645 | ||
1646 | class Branch_info | |
1647 | { | |
1648 | public: | |
1649 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1650 | unsigned int data_shndx, | |
1651 | Address r_offset, | |
1652 | unsigned int r_type, | |
1653 | unsigned int r_sym, | |
1654 | Address addend) | |
1655 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1656 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1657 | { } |
1658 | ||
1659 | ~Branch_info() | |
1660 | { } | |
1661 | ||
7e57d19e AM |
1662 | // Return whether this branch is going via a plt call stub, and if |
1663 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1664 | bool | |
1665 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1666 | unsigned int shndx, Address offset, | |
1667 | Target_powerpc* target, Symbol_table* symtab); | |
1668 | ||
ec661b9d | 1669 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1670 | bool |
ec661b9d AM |
1671 | make_stub(Stub_table<size, big_endian>*, |
1672 | Stub_table<size, big_endian>*, | |
1673 | Symbol_table*) const; | |
1674 | ||
1675 | private: | |
1676 | // The branch location.. | |
1677 | Powerpc_relobj<size, big_endian>* object_; | |
1678 | unsigned int shndx_; | |
1679 | Address offset_; | |
1680 | // ..and the branch type and destination. | |
7e57d19e AM |
1681 | unsigned int r_type_ : 31; |
1682 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1683 | unsigned int r_sym_; |
1684 | Address addend_; | |
1685 | }; | |
1686 | ||
42cacb20 DE |
1687 | // Information about this specific target which we pass to the |
1688 | // general Target structure. | |
1689 | static Target::Target_info powerpc_info; | |
1690 | ||
1691 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1692 | // These values are exposed to the ABI in an incremental link. |
1693 | // Do not renumber existing values without changing the version | |
1694 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1695 | enum Got_type |
1696 | { | |
dd93cd0a AM |
1697 | GOT_TYPE_STANDARD, |
1698 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1699 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1700 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1701 | }; |
1702 | ||
ec661b9d | 1703 | // The GOT section. |
cf43a2fe | 1704 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1705 | // The PLT section. This is a container for a table of addresses, |
1706 | // and their relocations. Each address in the PLT has a dynamic | |
1707 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1708 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1709 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1710 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1711 | // linker adds a stub that loads the PLT entry into ctr then | |
1712 | // branches to ctr. There may be more than one stub for each PLT | |
1713 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1714 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1715 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1716 | // The IPLT section. Like plt_, this is a container for a table of |
1717 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1718 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1719 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1720 | // entry in .glink for lazy resolution, and the relocation section | |
1721 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1722 | // the relocation section may contain relocations against | |
1723 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1724 | // relocation section will appear at the end of other dynamic | |
1725 | // relocations, so that ld.so applies these relocations after other | |
1726 | // dynamic relocations. In a static executable, the relocation | |
1727 | // section is emitted and marked with __rela_iplt_start and | |
1728 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1729 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
2d7ad24e AM |
1730 | // A PLT style section for local, non-ifunc symbols |
1731 | Output_data_plt_powerpc<size, big_endian>* lplt_; | |
ec661b9d AM |
1732 | // Section holding long branch destinations. |
1733 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1734 | // The .glink section. | |
cf43a2fe | 1735 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1736 | // The dynamic reloc section. |
42cacb20 DE |
1737 | Reloc_section* rela_dyn_; |
1738 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1739 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1740 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1741 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1742 | |
1743 | Stub_tables stub_tables_; | |
1744 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1745 | Branch_lookup_table branch_lookup_table_; | |
1746 | ||
1747 | typedef std::vector<Branch_info> Branches; | |
1748 | Branches branch_info_; | |
7e57d19e | 1749 | Tocsave_loc tocsave_loc_; |
9e69ed50 | 1750 | |
63e5eea2 | 1751 | bool power10_relocs_; |
9e69ed50 | 1752 | bool plt_thread_safe_; |
7ee7ff70 AM |
1753 | bool plt_localentry0_; |
1754 | bool plt_localentry0_init_; | |
1755 | bool has_localentry0_; | |
34e0882b | 1756 | bool has_tls_get_addr_opt_; |
4e0e019f | 1757 | bool no_tprel_opt_; |
a3e60ddb AM |
1758 | |
1759 | bool relax_failed_; | |
1760 | int relax_fail_count_; | |
1761 | int32_t stub_group_size_; | |
d49044c7 AM |
1762 | |
1763 | Output_data_save_res<size, big_endian> *savres_section_; | |
34e0882b AM |
1764 | |
1765 | // The "__tls_get_addr" symbol, if present | |
1766 | Symbol* tls_get_addr_; | |
1767 | // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. | |
1768 | Symbol* tls_get_addr_opt_; | |
724436fc AM |
1769 | |
1770 | // Attributes in output. | |
1771 | Attributes_section_data* attributes_section_data_; | |
1772 | ||
1773 | // Last input file to change various attribute tags | |
1774 | const char* last_fp_; | |
1775 | const char* last_ld_; | |
1776 | const char* last_vec_; | |
1777 | const char* last_struct_; | |
42cacb20 DE |
1778 | }; |
1779 | ||
1780 | template<> | |
1781 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1782 | { | |
1783 | 32, // size | |
1784 | true, // is_big_endian | |
1785 | elfcpp::EM_PPC, // machine_code | |
1786 | false, // has_make_symbol | |
1787 | false, // has_resolve | |
1788 | false, // has_code_fill | |
1789 | true, // is_default_stack_executable | |
b3ce541e | 1790 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1791 | '\0', // wrap_char |
1792 | "/usr/lib/ld.so.1", // dynamic_linker | |
1793 | 0x10000000, // default_text_segment_address | |
1794 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1795 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1796 | false, // isolate_execinstr |
1797 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1798 | elfcpp::SHN_UNDEF, // small_common_shndx |
1799 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1800 | 0, // small_common_section_flags | |
05a352e6 DK |
1801 | 0, // large_common_section_flags |
1802 | NULL, // attributes_section | |
a67858e0 | 1803 | NULL, // attributes_vendor |
8d9743bd MK |
1804 | "_start", // entry_symbol_name |
1805 | 32, // hash_entry_size | |
bce5a025 | 1806 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1807 | }; |
1808 | ||
1809 | template<> | |
1810 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1811 | { | |
1812 | 32, // size | |
1813 | false, // is_big_endian | |
1814 | elfcpp::EM_PPC, // machine_code | |
1815 | false, // has_make_symbol | |
1816 | false, // has_resolve | |
1817 | false, // has_code_fill | |
1818 | true, // is_default_stack_executable | |
b3ce541e | 1819 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1820 | '\0', // wrap_char |
1821 | "/usr/lib/ld.so.1", // dynamic_linker | |
1822 | 0x10000000, // default_text_segment_address | |
1823 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1824 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1825 | false, // isolate_execinstr |
1826 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1827 | elfcpp::SHN_UNDEF, // small_common_shndx |
1828 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1829 | 0, // small_common_section_flags | |
05a352e6 DK |
1830 | 0, // large_common_section_flags |
1831 | NULL, // attributes_section | |
a67858e0 | 1832 | NULL, // attributes_vendor |
8d9743bd MK |
1833 | "_start", // entry_symbol_name |
1834 | 32, // hash_entry_size | |
bce5a025 | 1835 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1836 | }; |
1837 | ||
1838 | template<> | |
1839 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1840 | { | |
1841 | 64, // size | |
1842 | true, // is_big_endian | |
1843 | elfcpp::EM_PPC64, // machine_code | |
1844 | false, // has_make_symbol | |
565ed01a | 1845 | true, // has_resolve |
42cacb20 | 1846 | false, // has_code_fill |
ec769010 | 1847 | false, // is_default_stack_executable |
b3ce541e | 1848 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1849 | '\0', // wrap_char |
1850 | "/usr/lib/ld.so.1", // dynamic_linker | |
1851 | 0x10000000, // default_text_segment_address | |
1852 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1853 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1854 | false, // isolate_execinstr |
1855 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1856 | elfcpp::SHN_UNDEF, // small_common_shndx |
1857 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1858 | 0, // small_common_section_flags | |
05a352e6 DK |
1859 | 0, // large_common_section_flags |
1860 | NULL, // attributes_section | |
a67858e0 | 1861 | NULL, // attributes_vendor |
8d9743bd MK |
1862 | "_start", // entry_symbol_name |
1863 | 32, // hash_entry_size | |
bce5a025 | 1864 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1865 | }; |
1866 | ||
1867 | template<> | |
1868 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1869 | { | |
1870 | 64, // size | |
1871 | false, // is_big_endian | |
1872 | elfcpp::EM_PPC64, // machine_code | |
1873 | false, // has_make_symbol | |
565ed01a | 1874 | true, // has_resolve |
42cacb20 | 1875 | false, // has_code_fill |
ec769010 | 1876 | false, // is_default_stack_executable |
b3ce541e | 1877 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1878 | '\0', // wrap_char |
1879 | "/usr/lib/ld.so.1", // dynamic_linker | |
1880 | 0x10000000, // default_text_segment_address | |
1881 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1882 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1883 | false, // isolate_execinstr |
1884 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1885 | elfcpp::SHN_UNDEF, // small_common_shndx |
1886 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1887 | 0, // small_common_section_flags | |
05a352e6 DK |
1888 | 0, // large_common_section_flags |
1889 | NULL, // attributes_section | |
a67858e0 | 1890 | NULL, // attributes_vendor |
8d9743bd MK |
1891 | "_start", // entry_symbol_name |
1892 | 32, // hash_entry_size | |
bce5a025 | 1893 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1894 | }; |
1895 | ||
32f59844 | 1896 | template<int size> |
dd93cd0a AM |
1897 | inline bool |
1898 | is_branch_reloc(unsigned int r_type) | |
1899 | { | |
1900 | return (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 1901 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
dd93cd0a AM |
1902 | || r_type == elfcpp::R_PPC_PLTREL24 |
1903 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1904 | || r_type == elfcpp::R_POWERPC_REL14 | |
1905 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1906 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1907 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1908 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1909 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1910 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1911 | } | |
1912 | ||
08be3224 AM |
1913 | // Reloc resolves to plt entry. |
1914 | template<int size> | |
1915 | inline bool | |
1916 | is_plt16_reloc(unsigned int r_type) | |
1917 | { | |
1918 | return (r_type == elfcpp::R_POWERPC_PLT16_LO | |
1919 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
1920 | || r_type == elfcpp::R_POWERPC_PLT16_HA | |
1921 | || (size == 64 && r_type == elfcpp::R_PPC64_PLT16_LO_DS)); | |
1922 | } | |
1923 | ||
4290b0ab AM |
1924 | // GOT_TYPE_STANDARD (ie. not TLS) GOT relocs |
1925 | inline bool | |
1926 | is_got_reloc(unsigned int r_type) | |
1927 | { | |
1928 | return (r_type == elfcpp::R_POWERPC_GOT16 | |
1929 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
1930 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
1931 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
1932 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
1933 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS | |
1934 | || r_type == elfcpp::R_PPC64_GOT_PCREL34); | |
1935 | } | |
1936 | ||
dd93cd0a AM |
1937 | // If INSN is an opcode that may be used with an @tls operand, return |
1938 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1939 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1940 | uint32_t | |
1941 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1942 | { | |
1943 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1944 | return 0; | |
1945 | ||
1946 | unsigned int rtra; | |
1947 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1948 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1949 | else if (((insn >> 16) & 0x1f) == reg) | |
1950 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1951 | else | |
1952 | return 0; | |
1953 | ||
1954 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1955 | // add -> addi | |
1956 | insn = 14 << 26; | |
1957 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1958 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1959 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1960 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1961 | // load and store indexed -> dform | |
1962 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1963 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1964 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1965 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1966 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1967 | // lwax -> lwa | |
1968 | insn = (58 << 26) | 2; | |
1969 | else | |
1970 | return 0; | |
1971 | insn |= rtra; | |
1972 | return insn; | |
1973 | } | |
1974 | ||
dd93cd0a | 1975 | |
42cacb20 DE |
1976 | template<int size, bool big_endian> |
1977 | class Powerpc_relocate_functions | |
1978 | { | |
dd93cd0a | 1979 | public: |
f4baf0d4 | 1980 | enum Overflow_check |
dd93cd0a | 1981 | { |
f4baf0d4 AM |
1982 | CHECK_NONE, |
1983 | CHECK_SIGNED, | |
b80eed39 AM |
1984 | CHECK_UNSIGNED, |
1985 | CHECK_BITFIELD, | |
1986 | CHECK_LOW_INSN, | |
1987 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1988 | }; |
1989 | ||
f4baf0d4 | 1990 | enum Status |
dd93cd0a | 1991 | { |
f4baf0d4 AM |
1992 | STATUS_OK, |
1993 | STATUS_OVERFLOW | |
1994 | }; | |
dd93cd0a | 1995 | |
42cacb20 | 1996 | private: |
c9269dff | 1997 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1998 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1999 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 2000 | |
dd93cd0a AM |
2001 | template<int valsize> |
2002 | static inline bool | |
2003 | has_overflow_signed(Address value) | |
2004 | { | |
2005 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
2006 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
2007 | limit <<= ((valsize - 1) >> 1); | |
2008 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
2009 | return value + limit > (limit << 1) - 1; | |
2010 | } | |
2011 | ||
2012 | template<int valsize> | |
2013 | static inline bool | |
b80eed39 | 2014 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
2015 | { |
2016 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
2017 | limit <<= ((valsize - 1) >> 1); | |
2018 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
2019 | return value > (limit << 1) - 1; |
2020 | } | |
2021 | ||
2022 | template<int valsize> | |
2023 | static inline bool | |
2024 | has_overflow_bitfield(Address value) | |
2025 | { | |
2026 | return (has_overflow_unsigned<valsize>(value) | |
2027 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
2028 | } |
2029 | ||
2030 | template<int valsize> | |
f4baf0d4 AM |
2031 | static inline Status |
2032 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 2033 | { |
f4baf0d4 | 2034 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
2035 | { |
2036 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 2037 | return STATUS_OVERFLOW; |
dd93cd0a | 2038 | } |
b80eed39 AM |
2039 | else if (overflow == CHECK_UNSIGNED) |
2040 | { | |
2041 | if (has_overflow_unsigned<valsize>(value)) | |
2042 | return STATUS_OVERFLOW; | |
2043 | } | |
f4baf0d4 | 2044 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
2045 | { |
2046 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 2047 | return STATUS_OVERFLOW; |
dd93cd0a | 2048 | } |
f4baf0d4 | 2049 | return STATUS_OK; |
dd93cd0a AM |
2050 | } |
2051 | ||
cf43a2fe | 2052 | // Do a simple RELA relocation |
0cfb0717 | 2053 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
2054 | static inline Status |
2055 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2056 | { |
0cfb0717 | 2057 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 2058 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 2059 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
2060 | return overflowed<valsize>(value, overflow); |
2061 | } | |
2062 | ||
0cfb0717 | 2063 | template<int fieldsize, int valsize> |
f4baf0d4 | 2064 | static inline Status |
42cacb20 DE |
2065 | rela(unsigned char* view, |
2066 | unsigned int right_shift, | |
0cfb0717 | 2067 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 2068 | Address value, |
f4baf0d4 | 2069 | Overflow_check overflow) |
42cacb20 | 2070 | { |
0cfb0717 | 2071 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 2072 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 2073 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
6a010cf6 AM |
2074 | if (overflow == CHECK_SIGNED) |
2075 | value = static_cast<SignedAddress>(value) >> right_shift; | |
2076 | else | |
2077 | value = value >> right_shift; | |
2078 | Valtype reloc = value; | |
42cacb20 DE |
2079 | val &= ~dst_mask; |
2080 | reloc &= dst_mask; | |
0cfb0717 | 2081 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
6a010cf6 | 2082 | return overflowed<valsize>(value, overflow); |
42cacb20 DE |
2083 | } |
2084 | ||
cf43a2fe | 2085 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 2086 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
2087 | static inline Status |
2088 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2089 | { |
0cfb0717 | 2090 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
2091 | return overflowed<valsize>(value, overflow); |
2092 | } | |
2093 | ||
0cfb0717 | 2094 | template<int fieldsize, int valsize> |
f4baf0d4 | 2095 | static inline Status |
cf43a2fe AM |
2096 | rela_ua(unsigned char* view, |
2097 | unsigned int right_shift, | |
0cfb0717 | 2098 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 2099 | Address value, |
f4baf0d4 | 2100 | Overflow_check overflow) |
42cacb20 | 2101 | { |
0cfb0717 | 2102 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 2103 | Valtype; |
0cfb0717 | 2104 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
6a010cf6 AM |
2105 | if (overflow == CHECK_SIGNED) |
2106 | value = static_cast<SignedAddress>(value) >> right_shift; | |
2107 | else | |
2108 | value = value >> right_shift; | |
2109 | Valtype reloc = value; | |
42cacb20 DE |
2110 | val &= ~dst_mask; |
2111 | reloc &= dst_mask; | |
0cfb0717 | 2112 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
6a010cf6 | 2113 | return overflowed<valsize>(value, overflow); |
42cacb20 DE |
2114 | } |
2115 | ||
42cacb20 | 2116 | public: |
dd93cd0a | 2117 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 2118 | static inline void |
dd93cd0a | 2119 | addr64(unsigned char* view, Address value) |
0cfb0717 | 2120 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 2121 | |
dd93cd0a | 2122 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 2123 | static inline void |
dd93cd0a | 2124 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 2125 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
2126 | |
2127 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
2128 | static inline Status |
2129 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2130 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
2131 | |
2132 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
2133 | static inline Status |
2134 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2135 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
2136 | |
2137 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
2138 | static inline Status |
2139 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2140 | { |
0cfb0717 AM |
2141 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
2142 | value, overflow); | |
f4baf0d4 AM |
2143 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2144 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2145 | return stat; |
2146 | } | |
42cacb20 DE |
2147 | |
2148 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
2149 | static inline Status |
2150 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2151 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 2152 | |
dd93cd0a | 2153 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
2154 | static inline Status |
2155 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2156 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 2157 | |
dd93cd0a | 2158 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
2159 | static inline Status |
2160 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2161 | { |
0cfb0717 | 2162 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 2163 | if ((value & 3) != 0) |
f4baf0d4 | 2164 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
2165 | return stat; |
2166 | } | |
42cacb20 | 2167 | |
a680de9a PB |
2168 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
2169 | static inline Status | |
2170 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
2171 | { | |
2172 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
2173 | if ((value & 15) != 0) | |
2174 | stat = STATUS_OVERFLOW; | |
2175 | return stat; | |
2176 | } | |
2177 | ||
42cacb20 DE |
2178 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
2179 | static inline void | |
dd93cd0a | 2180 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 2181 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2182 | |
c9269dff | 2183 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 2184 | static inline void |
dd93cd0a AM |
2185 | addr16_ha(unsigned char* view, Address value) |
2186 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 2187 | |
dd93cd0a | 2188 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 2189 | static inline void |
dd93cd0a | 2190 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 2191 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2192 | |
dd93cd0a | 2193 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 2194 | static inline void |
dd93cd0a AM |
2195 | addr16_ha2(unsigned char* view, Address value) |
2196 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 2197 | |
dd93cd0a | 2198 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 2199 | static inline void |
dd93cd0a | 2200 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 2201 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2202 | |
dd93cd0a | 2203 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 2204 | static inline void |
dd93cd0a AM |
2205 | addr16_ha3(unsigned char* view, Address value) |
2206 | { This::addr16_hi3(view, value + 0x8000); } | |
2207 | ||
2208 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
2209 | static inline Status |
2210 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2211 | { |
0cfb0717 | 2212 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
2213 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2214 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2215 | return stat; |
2216 | } | |
a680de9a PB |
2217 | |
2218 | // R_POWERPC_REL16DX_HA | |
2219 | static inline Status | |
2220 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
2221 | { | |
2222 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
2223 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
2224 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
2225 | value += 0x8000; | |
2226 | value = static_cast<SignedAddress>(value) >> 16; | |
2227 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2228 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
2229 | return overflowed<16>(value, overflow); | |
2230 | } | |
e4dff765 AM |
2231 | |
2232 | // R_PPC64_D34 | |
2233 | static inline Status | |
2234 | addr34(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2235 | { | |
2236 | Status stat = This::template rela<32,18>(view, 16, 0x3ffff, | |
2237 | value, overflow); | |
2238 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2239 | return stat; | |
2240 | } | |
2241 | ||
2242 | // R_PPC64_D34_HI30 | |
2243 | static inline void | |
2244 | addr34_hi(unsigned char *view, uint64_t value) | |
2245 | { This::addr34(view, value >> 34, CHECK_NONE);} | |
2246 | ||
2247 | // R_PPC64_D34_HA30 | |
2248 | static inline void | |
2249 | addr34_ha(unsigned char *view, uint64_t value) | |
2250 | { This::addr34_hi(view, value + (1ULL << 33));} | |
2251 | ||
2252 | // R_PPC64_D28 | |
2253 | static inline Status | |
2254 | addr28(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2255 | { | |
2256 | Status stat = This::template rela<32,12>(view, 16, 0xfff, | |
2257 | value, overflow); | |
2258 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2259 | return stat; | |
2260 | } | |
2261 | ||
2262 | // R_PPC64_ADDR16_HIGHER34 | |
2263 | static inline void | |
2264 | addr16_higher34(unsigned char* view, uint64_t value) | |
2265 | { This::addr16(view, value >> 34, CHECK_NONE); } | |
2266 | ||
2267 | // R_PPC64_ADDR16_HIGHERA34 | |
2268 | static inline void | |
2269 | addr16_highera34(unsigned char* view, uint64_t value) | |
2270 | { This::addr16_higher34(view, value + (1ULL << 33)); } | |
2271 | ||
2272 | // R_PPC64_ADDR16_HIGHEST34 | |
2273 | static inline void | |
2274 | addr16_highest34(unsigned char* view, uint64_t value) | |
2275 | { This::addr16(view, value >> 50, CHECK_NONE); } | |
2276 | ||
2277 | // R_PPC64_ADDR16_HIGHESTA34 | |
2278 | static inline void | |
2279 | addr16_highesta34(unsigned char* view, uint64_t value) | |
2280 | { This::addr16_highest34(view, value + (1ULL << 33)); } | |
cf43a2fe AM |
2281 | }; |
2282 | ||
b4f7960d AM |
2283 | // Set ABI version for input and output. |
2284 | ||
2285 | template<int size, bool big_endian> | |
2286 | void | |
2287 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
2288 | { | |
2289 | this->e_flags_ |= ver; | |
2290 | if (this->abiversion() != 0) | |
2291 | { | |
2292 | Target_powerpc<size, big_endian>* target = | |
2293 | static_cast<Target_powerpc<size, big_endian>*>( | |
2294 | parameters->sized_target<size, big_endian>()); | |
2295 | if (target->abiversion() == 0) | |
2296 | target->set_abiversion(this->abiversion()); | |
2297 | else if (target->abiversion() != this->abiversion()) | |
2298 | gold_error(_("%s: ABI version %d is not compatible " | |
2299 | "with ABI version %d output"), | |
2300 | this->name().c_str(), | |
2301 | this->abiversion(), target->abiversion()); | |
2302 | ||
2303 | } | |
2304 | } | |
2305 | ||
5edad15d AM |
2306 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
2307 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
2308 | |
2309 | template<int size, bool big_endian> | |
2310 | bool | |
2311 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
2312 | Read_symbols_data* sd) | |
2313 | { | |
c9269dff AM |
2314 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2315 | const unsigned char* namesu = sd->section_names->data(); | |
2316 | const char* names = reinterpret_cast<const char*>(namesu); | |
2317 | section_size_type names_size = sd->section_names_size; | |
2318 | const unsigned char* s; | |
2319 | ||
dc3714f3 AM |
2320 | s = this->template find_shdr<size, big_endian>(pshdrs, |
2321 | size == 32 ? ".got2" : ".opd", | |
2322 | names, names_size, NULL); | |
c9269dff AM |
2323 | if (s != NULL) |
2324 | { | |
2325 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2326 | this->special_ = ndx; | |
b4f7960d AM |
2327 | if (size == 64) |
2328 | { | |
2329 | if (this->abiversion() == 0) | |
2330 | this->set_abiversion(1); | |
2331 | else if (this->abiversion() > 1) | |
2332 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2333 | this->name().c_str(), this->abiversion()); | |
2334 | } | |
c9269dff | 2335 | } |
5edad15d AM |
2336 | if (size == 64) |
2337 | { | |
2338 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2339 | names, names_size, NULL); | |
2340 | if (s != NULL) | |
2341 | { | |
2342 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2343 | this->relatoc_ = ndx; | |
2344 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2345 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2346 | } | |
2347 | } | |
c9269dff AM |
2348 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2349 | } | |
2350 | ||
2351 | // Examine .rela.opd to build info about function entry points. | |
2352 | ||
2353 | template<int size, bool big_endian> | |
2354 | void | |
2355 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2356 | size_t reloc_count, | |
2357 | const unsigned char* prelocs, | |
2358 | const unsigned char* plocal_syms) | |
2359 | { | |
2360 | if (size == 64) | |
cf43a2fe | 2361 | { |
0e123f69 AM |
2362 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2363 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2364 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2365 | Address expected_off = 0; |
2366 | bool regular = true; | |
2367 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2368 | |
2369 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2370 | { |
c9269dff AM |
2371 | Reltype reloc(prelocs); |
2372 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2373 | = reloc.get_r_info(); | |
2374 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2375 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2376 | { | |
2377 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2378 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2379 | bool is_ordinary; | |
2380 | unsigned int shndx; | |
2381 | if (r_sym < this->local_symbol_count()) | |
2382 | { | |
2383 | typename elfcpp::Sym<size, big_endian> | |
2384 | lsym(plocal_syms + r_sym * sym_size); | |
2385 | shndx = lsym.get_st_shndx(); | |
2386 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2387 | value = lsym.get_st_value(); | |
2388 | } | |
2389 | else | |
2390 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2391 | &is_ordinary); | |
2392 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2393 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2394 | if (i == 2) |
2395 | { | |
2396 | expected_off = reloc.get_r_offset(); | |
2397 | opd_ent_size = expected_off; | |
2398 | } | |
2399 | else if (expected_off != reloc.get_r_offset()) | |
2400 | regular = false; | |
2401 | expected_off += opd_ent_size; | |
2402 | } | |
2403 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2404 | { | |
2405 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2406 | regular = false; | |
2407 | } | |
2408 | else | |
2409 | { | |
2410 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2411 | this->name().c_str(), r_type); | |
2412 | regular = false; | |
c9269dff AM |
2413 | } |
2414 | } | |
ec4dbad3 AM |
2415 | if (reloc_count <= 2) |
2416 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2417 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2418 | regular = false; | |
2419 | if (!regular) | |
2420 | { | |
2421 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2422 | this->name().c_str()); | |
2423 | opd_ent_size = 0; | |
2424 | } | |
c9269dff AM |
2425 | } |
2426 | } | |
2427 | ||
5edad15d AM |
2428 | // Returns true if a code sequence loading the TOC entry at VALUE |
2429 | // relative to the TOC pointer can be converted into code calculating | |
2430 | // a TOC pointer relative offset. | |
2431 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2432 | ||
2433 | template<int size, bool big_endian> | |
2434 | bool | |
2435 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2436 | Target_powerpc<size, big_endian>* target, | |
2437 | Address* value) | |
2438 | { | |
2439 | if (size != 64) | |
2440 | return false; | |
2441 | ||
e666304e AM |
2442 | // With -mcmodel=medium code it is quite possible to have |
2443 | // toc-relative relocs referring to objects outside the TOC. | |
2444 | // Don't try to look at a non-existent TOC. | |
2445 | if (this->toc_shndx() == 0) | |
2446 | return false; | |
2447 | ||
5edad15d AM |
2448 | // Convert VALUE back to an address by adding got_base (see below), |
2449 | // then to an offset in the TOC by subtracting the TOC output | |
2450 | // section address and the TOC output offset. Since this TOC output | |
2451 | // section and the got output section are one and the same, we can | |
2452 | // omit adding and subtracting the output section address. | |
2453 | Address off = (*value + this->toc_base_offset() | |
2454 | - this->output_section_offset(this->toc_shndx())); | |
2455 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2456 | // TOC relative access to variables outside the TOC. Those of | |
2457 | // course can't be optimized. We also don't try to optimize code | |
2458 | // that is using a different object's TOC. | |
2459 | if (off >= this->section_size(this->toc_shndx())) | |
2460 | return false; | |
2461 | ||
2462 | if (this->no_toc_opt(off)) | |
2463 | return false; | |
2464 | ||
2465 | section_size_type vlen; | |
2466 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2467 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2468 | // The TOC pointer | |
2469 | Address got_base = (target->got_section()->output_section()->address() | |
2470 | + this->toc_base_offset()); | |
2471 | addr -= got_base; | |
857e829e | 2472 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2473 | return false; |
2474 | ||
2475 | *value = addr; | |
2476 | return true; | |
2477 | } | |
2478 | ||
c9b8abb7 AM |
2479 | template<int size, bool big_endian> |
2480 | bool | |
2481 | Powerpc_relobj<size, big_endian>::make_got_relative( | |
2482 | Target_powerpc<size, big_endian>* target, | |
2483 | const Symbol_value<size>* psymval, | |
2484 | Address addend, | |
2485 | Address* value) | |
2486 | { | |
2487 | Address addr = psymval->value(this, addend); | |
2488 | Address got_base = (target->got_section()->output_section()->address() | |
2489 | + this->toc_base_offset()); | |
2490 | addr -= got_base; | |
2491 | if (addr + 0x80008000 > 0xffffffff) | |
2492 | return false; | |
2493 | ||
2494 | *value = addr; | |
2495 | return true; | |
2496 | } | |
2497 | ||
5edad15d AM |
2498 | // Perform the Sized_relobj_file method, then set up opd info from |
2499 | // .opd relocs. | |
2500 | ||
c9269dff AM |
2501 | template<int size, bool big_endian> |
2502 | void | |
2503 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2504 | { | |
2505 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2506 | if (size == 64) | |
2507 | { | |
2508 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2509 | p != rd->relocs.end(); | |
2510 | ++p) | |
2511 | { | |
2512 | if (p->data_shndx == this->opd_shndx()) | |
2513 | { | |
ec4dbad3 AM |
2514 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2515 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2516 | if (opd_size != 0) | |
2517 | { | |
2518 | this->init_opd(opd_size); | |
2519 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2520 | rd->local_symbols->data()); | |
2521 | } | |
c9269dff AM |
2522 | break; |
2523 | } | |
cf43a2fe AM |
2524 | } |
2525 | } | |
cf43a2fe AM |
2526 | } |
2527 | ||
b4f7960d AM |
2528 | // Read the symbols then set up st_other vector. |
2529 | ||
2530 | template<int size, bool big_endian> | |
2531 | void | |
2532 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2533 | { | |
f35c4853 | 2534 | this->base_read_symbols(sd); |
724436fc AM |
2535 | if (this->input_file()->format() != Input_file::FORMAT_ELF) |
2536 | return; | |
b4f7960d AM |
2537 | if (size == 64) |
2538 | { | |
2539 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2540 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2541 | const unsigned int loccount = this->do_local_symbol_count(); | |
2542 | if (loccount != 0) | |
2543 | { | |
2544 | this->st_other_.resize(loccount); | |
2545 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2546 | off_t locsize = loccount * sym_size; | |
2547 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2548 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2549 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2550 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2551 | locsize, true, false); | |
2552 | psyms += sym_size; | |
2553 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2554 | { | |
2555 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2556 | unsigned char st_other = sym.get_st_other(); | |
2557 | this->st_other_[i] = st_other; | |
2558 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2559 | { | |
2560 | if (this->abiversion() == 0) | |
2561 | this->set_abiversion(2); | |
2562 | else if (this->abiversion() < 2) | |
2563 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2564 | " for ABI version 1"), | |
2565 | this->name().c_str(), i); | |
2566 | } | |
2567 | } | |
2568 | } | |
2569 | } | |
724436fc AM |
2570 | |
2571 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2572 | const unsigned char* ps = sd->section_headers->data() + shdr_size; | |
2573 | bool merge_attributes = false; | |
2574 | for (unsigned int i = 1; i < this->shnum(); ++i, ps += shdr_size) | |
2575 | { | |
2576 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2577 | switch (shdr.get_sh_type()) | |
2578 | { | |
2579 | case elfcpp::SHT_GNU_ATTRIBUTES: | |
2580 | { | |
2581 | gold_assert(this->attributes_section_data_ == NULL); | |
2582 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2583 | section_size_type section_size = | |
2584 | convert_to_section_size_type(shdr.get_sh_size()); | |
2585 | const unsigned char* view = | |
2586 | this->get_view(section_offset, section_size, true, false); | |
2587 | this->attributes_section_data_ = | |
2588 | new Attributes_section_data(view, section_size); | |
2589 | } | |
2590 | break; | |
2591 | ||
2592 | case elfcpp::SHT_SYMTAB: | |
2593 | { | |
2594 | // Sometimes an object has no contents except the section | |
2595 | // name string table and an empty symbol table with the | |
2596 | // undefined symbol. We don't want to merge | |
2597 | // processor-specific flags from such an object. | |
2598 | const typename elfcpp::Elf_types<size>::Elf_WXword sym_size = | |
2599 | elfcpp::Elf_sizes<size>::sym_size; | |
2600 | if (shdr.get_sh_size() > sym_size) | |
2601 | merge_attributes = true; | |
2602 | } | |
2603 | break; | |
2604 | ||
2605 | case elfcpp::SHT_STRTAB: | |
2606 | break; | |
2607 | ||
2608 | default: | |
2609 | merge_attributes = true; | |
2610 | break; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | if (!merge_attributes) | |
2615 | { | |
2616 | // Should rarely happen. | |
2617 | delete this->attributes_section_data_; | |
2618 | this->attributes_section_data_ = NULL; | |
2619 | } | |
b4f7960d AM |
2620 | } |
2621 | ||
2622 | template<int size, bool big_endian> | |
2623 | void | |
2624 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2625 | { | |
2626 | this->e_flags_ |= ver; | |
2627 | if (this->abiversion() != 0) | |
2628 | { | |
2629 | Target_powerpc<size, big_endian>* target = | |
2630 | static_cast<Target_powerpc<size, big_endian>*>( | |
2631 | parameters->sized_target<size, big_endian>()); | |
2632 | if (target->abiversion() == 0) | |
2633 | target->set_abiversion(this->abiversion()); | |
2634 | else if (target->abiversion() != this->abiversion()) | |
2635 | gold_error(_("%s: ABI version %d is not compatible " | |
2636 | "with ABI version %d output"), | |
2637 | this->name().c_str(), | |
2638 | this->abiversion(), target->abiversion()); | |
2639 | ||
2640 | } | |
2641 | } | |
2642 | ||
f35c4853 | 2643 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2644 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2645 | ||
2646 | template<int size, bool big_endian> | |
2647 | void | |
2648 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2649 | { | |
f35c4853 | 2650 | this->base_read_symbols(sd); |
724436fc AM |
2651 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; |
2652 | const unsigned char* ps = | |
2653 | sd->section_headers->data() + shdr_size * (this->shnum() - 1); | |
2654 | for (unsigned int i = this->shnum(); i > 0; --i, ps -= shdr_size) | |
2655 | { | |
2656 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2657 | if (shdr.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES) | |
2658 | { | |
2659 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2660 | section_size_type section_size = | |
2661 | convert_to_section_size_type(shdr.get_sh_size()); | |
2662 | const unsigned char* view = | |
2663 | this->get_view(section_offset, section_size, true, false); | |
2664 | this->attributes_section_data_ = | |
2665 | new Attributes_section_data(view, section_size); | |
2666 | break; | |
2667 | } | |
2668 | } | |
dc3714f3 AM |
2669 | if (size == 64) |
2670 | { | |
dc3714f3 AM |
2671 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2672 | const unsigned char* namesu = sd->section_names->data(); | |
2673 | const char* names = reinterpret_cast<const char*>(namesu); | |
2674 | const unsigned char* s = NULL; | |
2675 | const unsigned char* opd; | |
2676 | section_size_type opd_size; | |
2677 | ||
2678 | // Find and read .opd section. | |
2679 | while (1) | |
2680 | { | |
2681 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2682 | sd->section_names_size, | |
2683 | s); | |
2684 | if (s == NULL) | |
2685 | return; | |
2686 | ||
2687 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2688 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2689 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2690 | { | |
b4f7960d AM |
2691 | if (this->abiversion() == 0) |
2692 | this->set_abiversion(1); | |
2693 | else if (this->abiversion() > 1) | |
2694 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2695 | this->name().c_str(), this->abiversion()); | |
2696 | ||
dc3714f3 AM |
2697 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2698 | this->opd_address_ = shdr.get_sh_addr(); | |
2699 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2700 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2701 | true, false); | |
2702 | break; | |
2703 | } | |
2704 | } | |
2705 | ||
2706 | // Build set of executable sections. | |
2707 | // Using a set is probably overkill. There is likely to be only | |
2708 | // a few executable sections, typically .init, .text and .fini, | |
2709 | // and they are generally grouped together. | |
2710 | typedef std::set<Sec_info> Exec_sections; | |
2711 | Exec_sections exec_sections; | |
2712 | s = pshdrs; | |
2713 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2714 | { | |
2715 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2716 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2717 | && ((shdr.get_sh_flags() | |
2718 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2719 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2720 | && shdr.get_sh_size() != 0) | |
2721 | { | |
2722 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2723 | shdr.get_sh_size(), i)); | |
2724 | } | |
2725 | } | |
2726 | if (exec_sections.empty()) | |
2727 | return; | |
2728 | ||
2729 | // Look over the OPD entries. This is complicated by the fact | |
2730 | // that some binaries will use two-word entries while others | |
2731 | // will use the standard three-word entries. In most cases | |
2732 | // the third word (the environment pointer for languages like | |
2733 | // Pascal) is unused and will be zero. If the third word is | |
2734 | // used it should not be pointing into executable sections, | |
2735 | // I think. | |
2736 | this->init_opd(opd_size); | |
2737 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2738 | { | |
2739 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2740 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2741 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2742 | if (val == 0) | |
2743 | // Chances are that this is the third word of an OPD entry. | |
2744 | continue; | |
2745 | typename Exec_sections::const_iterator e | |
2746 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2747 | if (e != exec_sections.begin()) | |
2748 | { | |
2749 | --e; | |
2750 | if (e->start <= val && val < e->start + e->len) | |
2751 | { | |
2752 | // We have an address in an executable section. | |
2753 | // VAL ought to be the function entry, set it up. | |
2754 | this->set_opd_ent(p - opd, e->shndx, val); | |
2755 | // Skip second word of OPD entry, the TOC pointer. | |
2756 | p += 8; | |
2757 | } | |
2758 | } | |
2759 | // If we didn't match any executable sections, we likely | |
2760 | // have a non-zero third word in the OPD entry. | |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | ||
5edad15d AM |
2765 | // Relocate sections. |
2766 | ||
2767 | template<int size, bool big_endian> | |
2768 | void | |
2769 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2770 | const Symbol_table* symtab, const Layout* layout, | |
2771 | const unsigned char* pshdrs, Output_file* of, | |
2772 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2773 | { | |
2774 | unsigned int start = 1; | |
2775 | if (size == 64 | |
2776 | && this->relatoc_ != 0 | |
2777 | && !parameters->options().relocatable()) | |
2778 | { | |
2779 | // Relocate .toc first. | |
2780 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2781 | this->relatoc_, this->relatoc_); | |
2782 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2783 | 1, this->relatoc_ - 1); | |
2784 | start = this->relatoc_ + 1; | |
2785 | } | |
2786 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2787 | start, this->shnum() - 1); | |
2d7ad24e AM |
2788 | |
2789 | if (!parameters->options().output_is_position_independent()) | |
2790 | { | |
2791 | Target_powerpc<size, big_endian>* target | |
2792 | = static_cast<Target_powerpc<size, big_endian>*>( | |
2793 | parameters->sized_target<size, big_endian>()); | |
2794 | if (target->lplt_section() && target->lplt_section()->data_size() != 0) | |
2795 | { | |
2796 | const section_size_type offset = target->lplt_section()->offset(); | |
2797 | const section_size_type oview_size | |
2798 | = convert_to_section_size_type(target->lplt_section()->data_size()); | |
2799 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
2800 | ||
2801 | bool modified = false; | |
2802 | unsigned int nsyms = this->local_symbol_count(); | |
2803 | for (unsigned int i = 0; i < nsyms; i++) | |
2804 | if (this->local_has_plt_offset(i)) | |
2805 | { | |
2806 | Address value = this->local_symbol_value(i, 0); | |
2d7ad24e AM |
2807 | size_t off = this->local_plt_offset(i); |
2808 | elfcpp::Swap<size, big_endian>::writeval(oview + off, value); | |
2809 | modified = true; | |
2810 | } | |
2811 | if (modified) | |
2812 | of->write_output_view(offset, oview_size, oview); | |
2813 | } | |
2814 | } | |
5edad15d AM |
2815 | } |
2816 | ||
f43ba157 | 2817 | // Set up some symbols. |
26a4e9cb AM |
2818 | |
2819 | template<int size, bool big_endian> | |
2820 | void | |
f43ba157 AM |
2821 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2822 | Symbol_table* symtab, | |
2823 | Layout* layout) | |
26a4e9cb AM |
2824 | { |
2825 | if (size == 32) | |
2826 | { | |
bb66a627 AM |
2827 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2828 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2829 | // non-relative dynamic relocs). The proper value will be |
2830 | // updated later. | |
2831 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2832 | if (gotsym != NULL && gotsym->is_undefined()) | |
2833 | { | |
2834 | Target_powerpc<size, big_endian>* target = | |
2835 | static_cast<Target_powerpc<size, big_endian>*>( | |
2836 | parameters->sized_target<size, big_endian>()); | |
2837 | Output_data_got_powerpc<size, big_endian>* got | |
2838 | = target->got_section(symtab, layout); | |
2839 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2840 | Symbol_table::PREDEFINED, | |
2841 | got, 0, 0, | |
2842 | elfcpp::STT_OBJECT, | |
bb66a627 | 2843 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2844 | elfcpp::STV_HIDDEN, 0, |
2845 | false, false); | |
2846 | } | |
2847 | ||
2848 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2849 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2850 | if (sdasym != NULL && sdasym->is_undefined()) | |
2851 | { | |
2852 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2853 | Output_section* os | |
2854 | = layout->add_output_section_data(".sdata", 0, | |
2855 | elfcpp::SHF_ALLOC | |
2856 | | elfcpp::SHF_WRITE, | |
2857 | sdata, ORDER_SMALL_DATA, false); | |
2858 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2859 | Symbol_table::PREDEFINED, | |
2860 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2861 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2862 | 0, false, false); | |
2863 | } | |
2864 | } | |
b4f7960d AM |
2865 | else |
2866 | { | |
2867 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2868 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2869 | if (gotsym != NULL && gotsym->is_undefined()) | |
2870 | { | |
2871 | Target_powerpc<size, big_endian>* target = | |
2872 | static_cast<Target_powerpc<size, big_endian>*>( | |
2873 | parameters->sized_target<size, big_endian>()); | |
2874 | Output_data_got_powerpc<size, big_endian>* got | |
2875 | = target->got_section(symtab, layout); | |
2876 | symtab->define_in_output_data(".TOC.", NULL, | |
2877 | Symbol_table::PREDEFINED, | |
2878 | got, 0x8000, 0, | |
2879 | elfcpp::STT_OBJECT, | |
2880 | elfcpp::STB_LOCAL, | |
2881 | elfcpp::STV_HIDDEN, 0, | |
2882 | false, false); | |
2883 | } | |
2884 | } | |
34e0882b AM |
2885 | |
2886 | this->tls_get_addr_ = symtab->lookup("__tls_get_addr"); | |
2887 | if (parameters->options().tls_get_addr_optimize() | |
2888 | && this->tls_get_addr_ != NULL | |
2889 | && this->tls_get_addr_->in_reg()) | |
2890 | this->tls_get_addr_opt_ = symtab->lookup("__tls_get_addr_opt"); | |
2891 | if (this->tls_get_addr_opt_ != NULL) | |
2892 | { | |
2893 | if (this->tls_get_addr_->is_undefined() | |
2894 | || this->tls_get_addr_->is_from_dynobj()) | |
2895 | { | |
2896 | // Make it seem as if references to __tls_get_addr are | |
2897 | // really to __tls_get_addr_opt, so the latter symbol is | |
2898 | // made dynamic, not the former. | |
2899 | this->tls_get_addr_->clear_in_reg(); | |
2900 | this->tls_get_addr_opt_->set_in_reg(); | |
2901 | } | |
2902 | // We have a non-dynamic definition for __tls_get_addr. | |
2903 | // Make __tls_get_addr_opt the same, if it does not already have | |
2904 | // a non-dynamic definition. | |
2905 | else if (this->tls_get_addr_opt_->is_undefined() | |
2906 | || this->tls_get_addr_opt_->is_from_dynobj()) | |
2907 | { | |
2908 | Sized_symbol<size>* from | |
2909 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_); | |
2910 | Sized_symbol<size>* to | |
2911 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_opt_); | |
2912 | symtab->clone<size>(to, from); | |
2913 | } | |
2914 | } | |
26a4e9cb AM |
2915 | } |
2916 | ||
cf43a2fe AM |
2917 | // Set up PowerPC target specific relobj. |
2918 | ||
2919 | template<int size, bool big_endian> | |
2920 | Object* | |
2921 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2922 | const std::string& name, | |
2923 | Input_file* input_file, | |
2924 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2925 | { | |
2926 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2927 | // ET_EXEC files are valid input for --just-symbols/-R, |
2928 | // and we treat them as relocatable objects. | |
2929 | if (et == elfcpp::ET_REL | |
2930 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2931 | { |
2932 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2933 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2934 | obj->setup(); |
2935 | return obj; | |
2936 | } | |
2937 | else if (et == elfcpp::ET_DYN) | |
2938 | { | |
dc3714f3 AM |
2939 | Powerpc_dynobj<size, big_endian>* obj = |
2940 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2941 | obj->setup(); |
2942 | return obj; | |
2943 | } | |
2944 | else | |
2945 | { | |
c9269dff | 2946 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2947 | return NULL; |
2948 | } | |
2949 | } | |
2950 | ||
2951 | template<int size, bool big_endian> | |
2952 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2953 | { | |
2954 | public: | |
2955 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2956 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2957 | ||
2958 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2959 | : Output_data_got<size, big_endian>(), | |
2960 | symtab_(symtab), layout_(layout), | |
2961 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2962 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2963 | { |
2964 | if (size == 64) | |
2965 | this->set_addralign(256); | |
2966 | } | |
cf43a2fe | 2967 | |
e84fe78f AM |
2968 | // Override all the Output_data_got methods we use so as to first call |
2969 | // reserve_ent(). | |
2970 | bool | |
2971 | add_global(Symbol* gsym, unsigned int got_type) | |
2972 | { | |
2973 | this->reserve_ent(); | |
2974 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2975 | } | |
2976 | ||
2977 | bool | |
2978 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2979 | { | |
2980 | this->reserve_ent(); | |
2981 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2982 | } | |
2983 | ||
2984 | bool | |
2985 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2986 | { return this->add_global_plt(gsym, got_type); } | |
2987 | ||
2988 | void | |
2989 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2990 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2991 | { | |
2992 | this->reserve_ent(); | |
2993 | Output_data_got<size, big_endian>:: | |
2994 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2995 | } | |
2996 | ||
2997 | void | |
2998 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2999 | Output_data_reloc_generic* rel_dyn, | |
3000 | unsigned int r_type_1, unsigned int r_type_2) | |
3001 | { | |
aacb3b6d AM |
3002 | if (gsym->has_got_offset(got_type)) |
3003 | return; | |
3004 | ||
e84fe78f AM |
3005 | this->reserve_ent(2); |
3006 | Output_data_got<size, big_endian>:: | |
3007 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
3008 | } | |
3009 | ||
3010 | bool | |
3011 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
3012 | { | |
3013 | this->reserve_ent(); | |
3014 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
3015 | got_type); | |
3016 | } | |
3017 | ||
3018 | bool | |
3019 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
3020 | { | |
3021 | this->reserve_ent(); | |
3022 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
3023 | got_type); | |
3024 | } | |
3025 | ||
3026 | bool | |
3027 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
3028 | { return this->add_local_plt(object, sym_index, got_type); } | |
3029 | ||
3030 | void | |
3031 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
3032 | unsigned int got_type, | |
3033 | Output_data_reloc_generic* rel_dyn, | |
3034 | unsigned int r_type) | |
3035 | { | |
aacb3b6d AM |
3036 | if (object->local_has_got_offset(sym_index, got_type)) |
3037 | return; | |
3038 | ||
e84fe78f AM |
3039 | this->reserve_ent(2); |
3040 | Output_data_got<size, big_endian>:: | |
3041 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
3042 | } | |
3043 | ||
3044 | unsigned int | |
3045 | add_constant(Valtype constant) | |
3046 | { | |
3047 | this->reserve_ent(); | |
3048 | return Output_data_got<size, big_endian>::add_constant(constant); | |
3049 | } | |
3050 | ||
dd93cd0a AM |
3051 | unsigned int |
3052 | add_constant_pair(Valtype c1, Valtype c2) | |
3053 | { | |
3054 | this->reserve_ent(2); | |
e84fe78f | 3055 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
3056 | } |
3057 | ||
3058 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
3059 | unsigned int |
3060 | g_o_t() const | |
3061 | { | |
3062 | return this->got_offset(this->header_index_); | |
42cacb20 | 3063 | } |
cf43a2fe | 3064 | |
dd93cd0a AM |
3065 | // Offset of base used to access the GOT/TOC. |
3066 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 3067 | Valtype |
dd93cd0a AM |
3068 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
3069 | { | |
3070 | if (size == 32) | |
3071 | return this->g_o_t(); | |
3072 | else | |
3073 | return (this->output_section()->address() | |
3074 | + object->toc_base_offset() | |
3075 | - this->address()); | |
3076 | } | |
3077 | ||
cf43a2fe AM |
3078 | // Ensure our GOT has a header. |
3079 | void | |
3080 | set_final_data_size() | |
3081 | { | |
3082 | if (this->header_ent_cnt_ != 0) | |
3083 | this->make_header(); | |
3084 | Output_data_got<size, big_endian>::set_final_data_size(); | |
3085 | } | |
3086 | ||
3087 | // First word of GOT header needs some values that are not | |
3088 | // handled by Output_data_got so poke them in here. | |
3089 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
3090 | void | |
3091 | do_write(Output_file* of) | |
3092 | { | |
c9824451 AM |
3093 | Valtype val = 0; |
3094 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
3095 | val = this->layout_->dynamic_section()->address(); | |
3096 | if (size == 64) | |
3097 | val = this->output_section()->address() + 0x8000; | |
3098 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
3099 | Output_data_got<size, big_endian>::do_write(of); |
3100 | } | |
3101 | ||
3102 | private: | |
3103 | void | |
3104 | reserve_ent(unsigned int cnt = 1) | |
3105 | { | |
3106 | if (this->header_ent_cnt_ == 0) | |
3107 | return; | |
3108 | if (this->num_entries() + cnt > this->header_index_) | |
3109 | this->make_header(); | |
3110 | } | |
3111 | ||
3112 | void | |
3113 | make_header() | |
3114 | { | |
3115 | this->header_ent_cnt_ = 0; | |
3116 | this->header_index_ = this->num_entries(); | |
3117 | if (size == 32) | |
3118 | { | |
3119 | Output_data_got<size, big_endian>::add_constant(0); | |
3120 | Output_data_got<size, big_endian>::add_constant(0); | |
3121 | Output_data_got<size, big_endian>::add_constant(0); | |
3122 | ||
3123 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
3124 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
3125 | if (gotsym != NULL) | |
3126 | { | |
3127 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
3128 | sym->set_value(this->g_o_t()); | |
3129 | } | |
3130 | else | |
3131 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
3132 | Symbol_table::PREDEFINED, | |
3133 | this, this->g_o_t(), 0, | |
3134 | elfcpp::STT_OBJECT, | |
3135 | elfcpp::STB_LOCAL, | |
3136 | elfcpp::STV_HIDDEN, 0, | |
3137 | false, false); | |
cf43a2fe AM |
3138 | } |
3139 | else | |
3140 | Output_data_got<size, big_endian>::add_constant(0); | |
3141 | } | |
3142 | ||
3143 | // Stashed pointers. | |
3144 | Symbol_table* symtab_; | |
3145 | Layout* layout_; | |
3146 | ||
3147 | // GOT header size. | |
3148 | unsigned int header_ent_cnt_; | |
3149 | // GOT header index. | |
3150 | unsigned int header_index_; | |
42cacb20 DE |
3151 | }; |
3152 | ||
3153 | // Get the GOT section, creating it if necessary. | |
3154 | ||
3155 | template<int size, bool big_endian> | |
cf43a2fe | 3156 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
3157 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
3158 | Layout* layout) | |
3159 | { | |
3160 | if (this->got_ == NULL) | |
3161 | { | |
3162 | gold_assert(symtab != NULL && layout != NULL); | |
3163 | ||
cf43a2fe AM |
3164 | this->got_ |
3165 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
3166 | |
3167 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
3168 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 3169 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
3170 | } |
3171 | ||
3172 | return this->got_; | |
3173 | } | |
3174 | ||
3175 | // Get the dynamic reloc section, creating it if necessary. | |
3176 | ||
3177 | template<int size, bool big_endian> | |
3178 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3179 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
3180 | { | |
3181 | if (this->rela_dyn_ == NULL) | |
3182 | { | |
3183 | gold_assert(layout != NULL); | |
3184 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
3185 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
3186 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
3187 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
3188 | } |
3189 | return this->rela_dyn_; | |
3190 | } | |
3191 | ||
b3ccdeb5 AM |
3192 | // Similarly, but for ifunc symbols get the one for ifunc. |
3193 | ||
3194 | template<int size, bool big_endian> | |
3195 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3196 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
3197 | Layout* layout, | |
3198 | bool for_ifunc) | |
3199 | { | |
3200 | if (!for_ifunc) | |
3201 | return this->rela_dyn_section(layout); | |
3202 | ||
3203 | if (this->iplt_ == NULL) | |
3204 | this->make_iplt_section(symtab, layout); | |
3205 | return this->iplt_->rel_plt(); | |
3206 | } | |
3207 | ||
ec661b9d AM |
3208 | class Stub_control |
3209 | { | |
3210 | public: | |
3211 | // Determine the stub group size. The group size is the absolute | |
3212 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 3213 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 3214 | // the stubbed branches. |
1c3a5fbe AM |
3215 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
3216 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
3217 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
3218 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
3219 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 3220 | { |
ec661b9d AM |
3221 | } |
3222 | ||
3223 | // Return true iff input section can be handled by current stub | |
3224 | // group. | |
3225 | bool | |
3226 | can_add_to_stub_group(Output_section* o, | |
3227 | const Output_section::Input_section* i, | |
3228 | bool has14); | |
3229 | ||
3230 | const Output_section::Input_section* | |
3231 | owner() | |
3232 | { return owner_; } | |
3233 | ||
3234 | Output_section* | |
3235 | output_section() | |
3236 | { return output_section_; } | |
3237 | ||
a20605cf AM |
3238 | void |
3239 | set_output_and_owner(Output_section* o, | |
3240 | const Output_section::Input_section* i) | |
3241 | { | |
3242 | this->output_section_ = o; | |
3243 | this->owner_ = i; | |
3244 | } | |
3245 | ||
ec661b9d AM |
3246 | private: |
3247 | typedef enum | |
3248 | { | |
1c3a5fbe | 3249 | // Initial state. |
ec661b9d | 3250 | NO_GROUP, |
1c3a5fbe | 3251 | // Adding group sections before the stubs. |
ec661b9d | 3252 | FINDING_STUB_SECTION, |
1c3a5fbe | 3253 | // Adding group sections after the stubs. |
ec661b9d AM |
3254 | HAS_STUB_SECTION |
3255 | } State; | |
3256 | ||
ec661b9d | 3257 | uint32_t stub_group_size_; |
a5018ae5 | 3258 | bool stubs_always_after_branch_; |
ec661b9d | 3259 | bool suppress_size_errors_; |
1c3a5fbe AM |
3260 | // True if a stub group can serve multiple output sections. |
3261 | bool multi_os_; | |
3262 | State state_; | |
8a37735f AM |
3263 | // Current max size of group. Starts at stub_group_size_ but is |
3264 | // reduced to stub_group_size_/1024 on seeing a section with | |
3265 | // external conditional branches. | |
3266 | uint32_t group_size_; | |
a5018ae5 | 3267 | uint64_t group_start_addr_; |
57f6d32d AM |
3268 | // owner_ and output_section_ specify the section to which stubs are |
3269 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
3270 | const Output_section::Input_section* owner_; |
3271 | Output_section* output_section_; | |
3272 | }; | |
3273 | ||
0cfdc767 | 3274 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
3275 | // group. Sections are presented to this function in order, |
3276 | // so the first section is the head of the group. | |
ec661b9d AM |
3277 | |
3278 | bool | |
3279 | Stub_control::can_add_to_stub_group(Output_section* o, | |
3280 | const Output_section::Input_section* i, | |
3281 | bool has14) | |
3282 | { | |
ec661b9d AM |
3283 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
3284 | uint64_t this_size; | |
3285 | uint64_t start_addr = o->address(); | |
3286 | ||
3287 | if (whole_sec) | |
3288 | // .init and .fini sections are pasted together to form a single | |
3289 | // function. We can't be adding stubs in the middle of the function. | |
3290 | this_size = o->data_size(); | |
3291 | else | |
3292 | { | |
3293 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
3294 | this_size = i->data_size(); | |
3295 | } | |
57f6d32d | 3296 | |
a5018ae5 | 3297 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
3298 | uint32_t group_size = this->stub_group_size_; |
3299 | if (has14) | |
3300 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 3301 | |
57f6d32d | 3302 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
3303 | gold_warning(_("%s:%s exceeds group size"), |
3304 | i->relobj()->name().c_str(), | |
3305 | i->relobj()->section_name(i->shndx()).c_str()); | |
3306 | ||
afe002dd AM |
3307 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
3308 | has14 ? " 14bit" : "", | |
3309 | i->relobj()->name().c_str(), | |
3310 | i->relobj()->section_name(i->shndx()).c_str(), | |
3311 | (long long) this_size, | |
a5018ae5 AM |
3312 | (this->state_ == NO_GROUP |
3313 | ? this_size | |
3314 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 3315 | |
1c3a5fbe AM |
3316 | if (this->state_ == NO_GROUP) |
3317 | { | |
3318 | // Only here on very first use of Stub_control | |
3319 | this->owner_ = i; | |
3320 | this->output_section_ = o; | |
3321 | this->state_ = FINDING_STUB_SECTION; | |
3322 | this->group_size_ = group_size; | |
3323 | this->group_start_addr_ = start_addr; | |
3324 | return true; | |
3325 | } | |
3326 | else if (!this->multi_os_ && this->output_section_ != o) | |
3327 | ; | |
3328 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 3329 | { |
a5018ae5 | 3330 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 3331 | // group? |
a5018ae5 | 3332 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 3333 | return true; |
ec661b9d | 3334 | } |
a5018ae5 | 3335 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 3336 | { |
a5018ae5 AM |
3337 | if ((whole_sec && this->output_section_ == o) |
3338 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3339 | { |
a5018ae5 | 3340 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
3341 | this->owner_ = i; |
3342 | this->output_section_ = o; | |
a5018ae5 | 3343 | return true; |
57f6d32d | 3344 | } |
a5018ae5 AM |
3345 | // The group before the stubs has reached maximum size. |
3346 | // Now see about adding sections after the stubs to the | |
3347 | // group. If the current section has a 14-bit branch and | |
3348 | // the group before the stubs exceeds group_size_ (because | |
3349 | // they didn't have 14-bit branches), don't add sections | |
3350 | // after the stubs: The size of stubs for such a large | |
3351 | // group may exceed the reach of a 14-bit branch. | |
3352 | if (!this->stubs_always_after_branch_ | |
3353 | && this_size <= this->group_size_ | |
3354 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3355 | { |
a5018ae5 AM |
3356 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
3357 | this->state_ = HAS_STUB_SECTION; | |
3358 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
3359 | return true; |
3360 | } | |
ec661b9d | 3361 | } |
a5018ae5 AM |
3362 | else |
3363 | gold_unreachable(); | |
57f6d32d | 3364 | |
1c3a5fbe AM |
3365 | gold_debug(DEBUG_TARGET, |
3366 | !this->multi_os_ && this->output_section_ != o | |
3367 | ? "nope, new output section\n" | |
3368 | : "nope, didn't fit\n"); | |
afe002dd | 3369 | |
57f6d32d AM |
3370 | // The section fails to fit in the current group. Set up a few |
3371 | // things for the next group. owner_ and output_section_ will be | |
3372 | // set later after we've retrieved those values for the current | |
3373 | // group. | |
3374 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 3375 | this->group_size_ = group_size; |
a5018ae5 | 3376 | this->group_start_addr_ = start_addr; |
57f6d32d | 3377 | return false; |
ec661b9d AM |
3378 | } |
3379 | ||
3380 | // Look over all the input sections, deciding where to place stubs. | |
3381 | ||
3382 | template<int size, bool big_endian> | |
3383 | void | |
3384 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
3385 | const Task*, |
3386 | bool no_size_errors) | |
ec661b9d | 3387 | { |
1c3a5fbe AM |
3388 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
3389 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
3390 | |
3391 | // Group input sections and insert stub table | |
a3e60ddb AM |
3392 | Stub_table_owner* table_owner = NULL; |
3393 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
3394 | Layout::Section_list section_list; |
3395 | layout->get_executable_sections(§ion_list); | |
3396 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
3397 | for (Layout::Section_list::iterator o = section_list.begin(); |
3398 | o != section_list.end(); | |
ec661b9d AM |
3399 | ++o) |
3400 | { | |
3401 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
3402 | for (Input_section_list::const_iterator i |
3403 | = (*o)->input_sections().begin(); | |
3404 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
3405 | ++i) |
3406 | { | |
a3e60ddb AM |
3407 | if (i->is_input_section() |
3408 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
3409 | { |
3410 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
3411 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
3412 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
3413 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
3414 | { | |
a3e60ddb AM |
3415 | table_owner->output_section = stub_control.output_section(); |
3416 | table_owner->owner = stub_control.owner(); | |
a20605cf | 3417 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 3418 | table_owner = NULL; |
ec661b9d | 3419 | } |
a3e60ddb AM |
3420 | if (table_owner == NULL) |
3421 | { | |
3422 | table_owner = new Stub_table_owner; | |
3423 | tables.push_back(table_owner); | |
3424 | } | |
3425 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
3426 | } |
3427 | } | |
3428 | } | |
a3e60ddb | 3429 | if (table_owner != NULL) |
0cfdc767 | 3430 | { |
a5018ae5 AM |
3431 | table_owner->output_section = stub_control.output_section(); |
3432 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
3433 | } |
3434 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
3435 | t != tables.end(); | |
3436 | ++t) | |
3437 | { | |
3438 | Stub_table<size, big_endian>* stub_table; | |
3439 | ||
3440 | if ((*t)->owner->is_input_section()) | |
3441 | stub_table = new Stub_table<size, big_endian>(this, | |
3442 | (*t)->output_section, | |
590b87ff AM |
3443 | (*t)->owner, |
3444 | this->stub_tables_.size()); | |
a3e60ddb AM |
3445 | else if ((*t)->owner->is_relaxed_input_section()) |
3446 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
3447 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 3448 | else |
a3e60ddb AM |
3449 | gold_unreachable(); |
3450 | this->stub_tables_.push_back(stub_table); | |
3451 | delete *t; | |
0cfdc767 | 3452 | } |
ec661b9d AM |
3453 | } |
3454 | ||
32f59844 | 3455 | template<int size> |
a3e60ddb AM |
3456 | static unsigned long |
3457 | max_branch_delta (unsigned int r_type) | |
3458 | { | |
3459 | if (r_type == elfcpp::R_POWERPC_REL14 | |
3460 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
3461 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
3462 | return 1L << 15; | |
3463 | if (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 3464 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
a3e60ddb AM |
3465 | || r_type == elfcpp::R_PPC_PLTREL24 |
3466 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
3467 | return 1L << 25; | |
3468 | return 0; | |
3469 | } | |
3470 | ||
7e57d19e AM |
3471 | // Return whether this branch is going via a plt call stub. |
3472 | ||
3473 | template<int size, bool big_endian> | |
3474 | bool | |
3475 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
3476 | Powerpc_relobj<size, big_endian>* ppc_object, | |
3477 | unsigned int shndx, | |
3478 | Address offset, | |
3479 | Target_powerpc* target, | |
3480 | Symbol_table* symtab) | |
3481 | { | |
3482 | if (this->object_ != ppc_object | |
3483 | || this->shndx_ != shndx | |
3484 | || this->offset_ != offset) | |
3485 | return false; | |
3486 | ||
3487 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3488 | if (sym != NULL && sym->is_forwarder()) | |
3489 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3490 | if (target->replace_tls_get_addr(sym)) |
3491 | sym = target->tls_get_addr_opt(); | |
7e57d19e AM |
3492 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
3493 | if (gsym != NULL | |
7ee7ff70 AM |
3494 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3495 | && !target->is_elfv2_localentry0(gsym)) | |
3496 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3497 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3498 | { |
3499 | this->tocsave_ = 1; | |
3500 | return true; | |
3501 | } | |
3502 | return false; | |
3503 | } | |
3504 | ||
ec661b9d AM |
3505 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3506 | ||
3507 | template<int size, bool big_endian> | |
a3e60ddb | 3508 | bool |
ec661b9d AM |
3509 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3510 | Stub_table<size, big_endian>* stub_table, | |
3511 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3512 | Symbol_table* symtab) const | |
3513 | { | |
3514 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
88b8e639 AM |
3515 | Target_powerpc<size, big_endian>* target = |
3516 | static_cast<Target_powerpc<size, big_endian>*>( | |
3517 | parameters->sized_target<size, big_endian>()); | |
34e0882b AM |
3518 | if (sym != NULL && sym->is_forwarder()) |
3519 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3520 | if (target->replace_tls_get_addr(sym)) |
3521 | sym = target->tls_get_addr_opt(); | |
34e0882b | 3522 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
dc60b26d AM |
3523 | bool ok = true; |
3524 | ||
ec661b9d | 3525 | if (gsym != NULL |
88b8e639 | 3526 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3527 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3528 | { | |
9055360d AM |
3529 | if (size == 64 |
3530 | && gsym != NULL | |
3531 | && target->abiversion() >= 2 | |
3532 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3533 | && !is_branch_reloc<size>(this->r_type_)) |
9055360d AM |
3534 | target->glink_section()->add_global_entry(gsym); |
3535 | else | |
ec661b9d | 3536 | { |
64b5d6d7 AM |
3537 | if (stub_table == NULL |
3538 | && !(size == 32 | |
3539 | && gsym != NULL | |
3540 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3541 | && !is_branch_reloc<size>(this->r_type_))) |
9055360d AM |
3542 | stub_table = this->object_->stub_table(this->shndx_); |
3543 | if (stub_table == NULL) | |
3544 | { | |
64b5d6d7 AM |
3545 | // This is a ref from a data section to an ifunc symbol, |
3546 | // or a non-branch reloc for which we always want to use | |
3547 | // one set of stubs for resolving function addresses. | |
9055360d AM |
3548 | stub_table = ifunc_stub_table; |
3549 | } | |
3550 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3551 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3552 | if (from != invalid_address) | |
3553 | from += (this->object_->output_section(this->shndx_)->address() | |
3554 | + this->offset_); | |
9055360d | 3555 | if (gsym != NULL) |
dc60b26d AM |
3556 | ok = stub_table->add_plt_call_entry(from, |
3557 | this->object_, gsym, | |
7e57d19e AM |
3558 | this->r_type_, this->addend_, |
3559 | this->tocsave_); | |
9055360d | 3560 | else |
dc60b26d AM |
3561 | ok = stub_table->add_plt_call_entry(from, |
3562 | this->object_, this->r_sym_, | |
7e57d19e AM |
3563 | this->r_type_, this->addend_, |
3564 | this->tocsave_); | |
ec661b9d | 3565 | } |
ec661b9d AM |
3566 | } |
3567 | else | |
3568 | { | |
32f59844 | 3569 | Address max_branch_offset = max_branch_delta<size>(this->r_type_); |
a3e60ddb AM |
3570 | if (max_branch_offset == 0) |
3571 | return true; | |
ec661b9d AM |
3572 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3573 | gold_assert(from != invalid_address); | |
3574 | from += (this->object_->output_section(this->shndx_)->address() | |
3575 | + this->offset_); | |
3576 | Address to; | |
e3b53295 | 3577 | unsigned int other = 0; |
ec661b9d AM |
3578 | if (gsym != NULL) |
3579 | { | |
3580 | switch (gsym->source()) | |
3581 | { | |
3582 | case Symbol::FROM_OBJECT: | |
3583 | { | |
3584 | Object* symobj = gsym->object(); | |
3585 | if (symobj->is_dynamic() | |
3586 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3587 | return true; |
ec661b9d AM |
3588 | bool is_ordinary; |
3589 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3590 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3591 | return true; |
ec661b9d AM |
3592 | } |
3593 | break; | |
3594 | ||
3595 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3596 | return true; |
ec661b9d AM |
3597 | |
3598 | default: | |
3599 | break; | |
3600 | } | |
3601 | Symbol_table::Compute_final_value_status status; | |
3602 | to = symtab->compute_final_value<size>(gsym, &status); | |
3603 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3604 | return true; |
e3b53295 AM |
3605 | if (size == 64) |
3606 | other = gsym->nonvis() >> 3; | |
ec661b9d AM |
3607 | } |
3608 | else | |
3609 | { | |
3610 | const Symbol_value<size>* psymval | |
3611 | = this->object_->local_symbol(this->r_sym_); | |
3612 | Symbol_value<size> symval; | |
0f125432 CC |
3613 | if (psymval->is_section_symbol()) |
3614 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3615 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3616 | typename ObjType::Compute_final_local_value_status status | |
3617 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3618 | &symval, symtab); | |
3619 | if (status != ObjType::CFLV_OK | |
3620 | || !symval.has_output_value()) | |
a3e60ddb | 3621 | return true; |
ec661b9d | 3622 | to = symval.value(this->object_, 0); |
e3b53295 AM |
3623 | if (size == 64) |
3624 | other = this->object_->st_other(this->r_sym_) >> 5; | |
ec661b9d | 3625 | } |
cbcb23fa AM |
3626 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3627 | to += this->addend_; | |
ec661b9d AM |
3628 | if (stub_table == NULL) |
3629 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3630 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3631 | { |
3632 | unsigned int dest_shndx; | |
1611bc4a AM |
3633 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3634 | &to, &dest_shndx)) | |
3635 | return true; | |
ec661b9d | 3636 | } |
fa40fbe4 AM |
3637 | unsigned int local_ent = 0; |
3638 | if (size == 64 | |
3639 | && this->r_type_ != elfcpp::R_PPC64_REL24_NOTOC) | |
3640 | local_ent = elfcpp::ppc64_decode_local_entry(other); | |
3641 | Address delta = to + local_ent - from; | |
32f59844 AM |
3642 | if (delta + max_branch_offset >= 2 * max_branch_offset |
3643 | || (size == 64 | |
3644 | && this->r_type_ == elfcpp::R_PPC64_REL24_NOTOC | |
3645 | && (gsym != NULL | |
3646 | ? this->object_->ppc64_needs_toc(gsym) | |
3647 | : this->object_->ppc64_needs_toc(this->r_sym_)))) | |
ec661b9d | 3648 | { |
0cfdc767 AM |
3649 | if (stub_table == NULL) |
3650 | { | |
3651 | gold_warning(_("%s:%s: branch in non-executable section," | |
3652 | " no long branch stub for you"), | |
3653 | this->object_->name().c_str(), | |
3654 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3655 | return true; |
0cfdc767 | 3656 | } |
d49044c7 AM |
3657 | bool save_res = (size == 64 |
3658 | && gsym != NULL | |
3659 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3660 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3661 | ok = stub_table->add_long_branch_entry(this->object_, |
3662 | this->r_type_, | |
fa40fbe4 | 3663 | from, to, other, save_res); |
ec661b9d AM |
3664 | } |
3665 | } | |
dc60b26d AM |
3666 | if (!ok) |
3667 | gold_debug(DEBUG_TARGET, | |
3668 | "branch at %s:%s+%#lx\n" | |
3669 | "can't reach stub attached to %s:%s", | |
3670 | this->object_->name().c_str(), | |
3671 | this->object_->section_name(this->shndx_).c_str(), | |
3672 | (unsigned long) this->offset_, | |
3673 | stub_table->relobj()->name().c_str(), | |
3674 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3675 | ||
3676 | return ok; | |
ec661b9d AM |
3677 | } |
3678 | ||
3679 | // Relaxation hook. This is where we do stub generation. | |
3680 | ||
3681 | template<int size, bool big_endian> | |
3682 | bool | |
3683 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3684 | const Input_objects*, | |
3685 | Symbol_table* symtab, | |
3686 | Layout* layout, | |
3687 | const Task* task) | |
3688 | { | |
3689 | unsigned int prev_brlt_size = 0; | |
3690 | if (pass == 1) | |
ec661b9d | 3691 | { |
b4f7960d AM |
3692 | bool thread_safe |
3693 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3694 | if (size == 64 | |
3695 | && this->abiversion() < 2 | |
3696 | && !thread_safe | |
3697 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3698 | { |
e2458743 | 3699 | static const char* const thread_starter[] = |
9e69ed50 AM |
3700 | { |
3701 | "pthread_create", | |
3702 | /* libstdc++ */ | |
3703 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3704 | /* librt */ | |
3705 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3706 | "mq_notify", "create_timer", | |
3707 | /* libanl */ | |
3708 | "getaddrinfo_a", | |
3709 | /* libgomp */ | |
80272b8c | 3710 | "GOMP_parallel", |
9e69ed50 | 3711 | "GOMP_parallel_start", |
80272b8c | 3712 | "GOMP_parallel_loop_static", |
9e69ed50 | 3713 | "GOMP_parallel_loop_static_start", |
80272b8c | 3714 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3715 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3716 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3717 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3718 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3719 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3720 | "GOMP_parallel_sections", |
43819297 | 3721 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3722 | /* libgo */ |
3723 | "__go_go", | |
9e69ed50 AM |
3724 | }; |
3725 | ||
e2458743 AM |
3726 | if (parameters->options().shared()) |
3727 | thread_safe = true; | |
3728 | else | |
9e69ed50 | 3729 | { |
e2458743 AM |
3730 | for (unsigned int i = 0; |
3731 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3732 | i++) | |
3733 | { | |
3734 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3735 | thread_safe = (sym != NULL | |
3736 | && sym->in_reg() | |
3737 | && sym->in_real_elf()); | |
3738 | if (thread_safe) | |
3739 | break; | |
3740 | } | |
9e69ed50 | 3741 | } |
ec661b9d | 3742 | } |
9e69ed50 | 3743 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3744 | } |
3745 | ||
3746 | if (pass == 1) | |
3747 | { | |
3748 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3749 | bool no_size_errors = true; | |
3750 | if (this->stub_group_size_ == 1) | |
3751 | this->stub_group_size_ = 0x1c00000; | |
3752 | else if (this->stub_group_size_ == -1) | |
3753 | this->stub_group_size_ = -0x1e00000; | |
3754 | else | |
3755 | no_size_errors = false; | |
3756 | this->group_sections(layout, task, no_size_errors); | |
3757 | } | |
3758 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3759 | { | |
3760 | this->branch_lookup_table_.clear(); | |
3761 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3762 | p != this->stub_tables_.end(); | |
3763 | ++p) | |
3764 | { | |
3765 | (*p)->clear_stubs(true); | |
3766 | } | |
3767 | this->stub_tables_.clear(); | |
3768 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3769 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3770 | program_name, this->stub_group_size_); |
3771 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3772 | } |
3773 | ||
3774 | // We need address of stub tables valid for make_stub. | |
3775 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3776 | p != this->stub_tables_.end(); | |
3777 | ++p) | |
3778 | { | |
3779 | const Powerpc_relobj<size, big_endian>* object | |
3780 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3781 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3782 | gold_assert(off != invalid_address); | |
3783 | Output_section* os = (*p)->output_section(); | |
3784 | (*p)->set_address_and_size(os, off); | |
3785 | } | |
3786 | ||
9e69ed50 AM |
3787 | if (pass != 1) |
3788 | { | |
3789 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3790 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3791 | this->branch_lookup_table_.clear(); | |
3792 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3793 | p != this->stub_tables_.end(); | |
3794 | ++p) | |
3795 | { | |
a3e60ddb | 3796 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3797 | } |
3798 | } | |
3799 | ||
3800 | // Build all the stubs. | |
a3e60ddb | 3801 | this->relax_failed_ = false; |
ec661b9d AM |
3802 | Stub_table<size, big_endian>* ifunc_stub_table |
3803 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3804 | Stub_table<size, big_endian>* one_stub_table | |
3805 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3806 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3807 | b != this->branch_info_.end(); | |
3808 | b++) | |
3809 | { | |
a3e60ddb AM |
3810 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3811 | && !this->relax_failed_) | |
3812 | { | |
3813 | this->relax_failed_ = true; | |
3814 | this->relax_fail_count_++; | |
3815 | if (this->relax_fail_count_ < 3) | |
3816 | return true; | |
3817 | } | |
ec661b9d | 3818 | } |
32f59844 AM |
3819 | bool do_resize = false; |
3820 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3821 | p != this->stub_tables_.end(); | |
3822 | ++p) | |
3823 | if ((*p)->need_resize()) | |
3824 | { | |
3825 | do_resize = true; | |
3826 | break; | |
3827 | } | |
3828 | if (do_resize) | |
3829 | { | |
3830 | this->branch_lookup_table_.clear(); | |
3831 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3832 | p != this->stub_tables_.end(); | |
3833 | ++p) | |
3834 | (*p)->set_resizing(true); | |
3835 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3836 | b != this->branch_info_.end(); | |
3837 | b++) | |
3838 | { | |
3839 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) | |
3840 | && !this->relax_failed_) | |
3841 | { | |
3842 | this->relax_failed_ = true; | |
3843 | this->relax_fail_count_++; | |
3844 | if (this->relax_fail_count_ < 3) | |
3845 | return true; | |
3846 | } | |
3847 | } | |
3848 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3849 | p != this->stub_tables_.end(); | |
3850 | ++p) | |
3851 | (*p)->set_resizing(false); | |
3852 | } | |
ec661b9d | 3853 | |
9e69ed50 | 3854 | // Did anything change size? |
ec661b9d AM |
3855 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3856 | bool again = num_huge_branches != prev_brlt_size; | |
3857 | if (size == 64 && num_huge_branches != 0) | |
3858 | this->make_brlt_section(layout); | |
3859 | if (size == 64 && again) | |
3860 | this->brlt_section_->set_current_size(num_huge_branches); | |
3861 | ||
be897fb7 AM |
3862 | for (typename Stub_tables::reverse_iterator p = this->stub_tables_.rbegin(); |
3863 | p != this->stub_tables_.rend(); | |
3864 | ++p) | |
3865 | (*p)->remove_eh_frame(layout); | |
3866 | ||
3867 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3868 | p != this->stub_tables_.end(); | |
3869 | ++p) | |
3870 | (*p)->add_eh_frame(layout); | |
3871 | ||
ec661b9d AM |
3872 | typedef Unordered_set<Output_section*> Output_sections; |
3873 | Output_sections os_need_update; | |
3874 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3875 | p != this->stub_tables_.end(); | |
3876 | ++p) | |
3877 | { | |
3878 | if ((*p)->size_update()) | |
3879 | { | |
3880 | again = true; | |
3881 | os_need_update.insert((*p)->output_section()); | |
3882 | } | |
3883 | } | |
3884 | ||
9e69ed50 AM |
3885 | // Set output section offsets for all input sections in an output |
3886 | // section that just changed size. Anything past the stubs will | |
3887 | // need updating. | |
ec661b9d AM |
3888 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3889 | p != os_need_update.end(); | |
3890 | p++) | |
3891 | { | |
3892 | Output_section* os = *p; | |
3893 | Address off = 0; | |
3894 | typedef Output_section::Input_section_list Input_section_list; | |
3895 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3896 | i != os->input_sections().end(); | |
3897 | ++i) | |
3898 | { | |
3899 | off = align_address(off, i->addralign()); | |
3900 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3901 | i->relobj()->set_section_offset(i->shndx(), off); | |
3902 | if (i->is_relaxed_input_section()) | |
3903 | { | |
3904 | Stub_table<size, big_endian>* stub_table | |
3905 | = static_cast<Stub_table<size, big_endian>*>( | |
3906 | i->relaxed_input_section()); | |
6395d38b HS |
3907 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3908 | off += stub_table_size; | |
3909 | // After a few iterations, set current stub table size | |
3910 | // as min size threshold, so later stub tables can only | |
3911 | // grow in size. | |
3912 | if (pass >= 4) | |
3913 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3914 | } |
3915 | else | |
3916 | off += i->data_size(); | |
3917 | } | |
6830ee24 AM |
3918 | // If .branch_lt is part of this output section, then we have |
3919 | // just done the offset adjustment. | |
ec661b9d AM |
3920 | os->clear_section_offsets_need_adjustment(); |
3921 | } | |
3922 | ||
3923 | if (size == 64 | |
3924 | && !again | |
3925 | && num_huge_branches != 0 | |
3926 | && parameters->options().output_is_position_independent()) | |
3927 | { | |
3928 | // Fill in the BRLT relocs. | |
06f30c9d | 3929 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3930 | for (typename Branch_lookup_table::const_iterator p |
3931 | = this->branch_lookup_table_.begin(); | |
3932 | p != this->branch_lookup_table_.end(); | |
3933 | ++p) | |
3934 | { | |
3935 | this->brlt_section_->add_reloc(p->first, p->second); | |
3936 | } | |
06f30c9d | 3937 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3938 | } |
590b87ff AM |
3939 | |
3940 | if (!again | |
3941 | && (parameters->options().user_set_emit_stub_syms() | |
3942 | ? parameters->options().emit_stub_syms() | |
3943 | : (size == 64 | |
3944 | || parameters->options().output_is_position_independent() | |
3945 | || parameters->options().emit_relocs()))) | |
3946 | { | |
3947 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3948 | p != this->stub_tables_.end(); | |
3949 | ++p) | |
3950 | (*p)->define_stub_syms(symtab); | |
3951 | ||
3952 | if (this->glink_ != NULL) | |
3953 | { | |
9e390558 | 3954 | int stub_size = this->glink_->pltresolve_size(); |
590b87ff AM |
3955 | Address value = -stub_size; |
3956 | if (size == 64) | |
3957 | { | |
3958 | value = 8; | |
3959 | stub_size -= 8; | |
3960 | } | |
3961 | this->define_local(symtab, "__glink_PLTresolve", | |
3962 | this->glink_, value, stub_size); | |
3963 | ||
3964 | if (size != 64) | |
3965 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3966 | } | |
3967 | } | |
3968 | ||
ec661b9d AM |
3969 | return again; |
3970 | } | |
3971 | ||
9d5781f8 AM |
3972 | template<int size, bool big_endian> |
3973 | void | |
3974 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3975 | unsigned char* oview, | |
3976 | uint64_t* paddress, | |
3977 | off_t* plen) const | |
3978 | { | |
3979 | uint64_t address = plt->address(); | |
3980 | off_t len = plt->data_size(); | |
3981 | ||
3982 | if (plt == this->glink_) | |
3983 | { | |
3984 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3985 | if (len == 0) |
3986 | { | |
5fe7ffdc AM |
3987 | // Static linking may need stubs, to support ifunc and long |
3988 | // branches. We need to create an output section for | |
3989 | // .eh_frame early in the link process, to have a place to | |
3990 | // attach stub .eh_frame info. We also need to have | |
3991 | // registered a CIE that matches the stub CIE. Both of | |
3992 | // these requirements are satisfied by creating an FDE and | |
3993 | // CIE for .glink, even though static linking will leave | |
3994 | // .glink zero length. | |
3995 | // ??? Hopefully generating an FDE with a zero address range | |
3996 | // won't confuse anything that consumes .eh_frame info. | |
3997 | } | |
3998 | else if (size == 64) | |
9d5781f8 AM |
3999 | { |
4000 | // There is one word before __glink_PLTresolve | |
4001 | address += 8; | |
4002 | len -= 8; | |
4003 | } | |
4004 | else if (parameters->options().output_is_position_independent()) | |
4005 | { | |
4006 | // There are two FDEs for a position independent glink. | |
4007 | // The first covers the branch table, the second | |
4008 | // __glink_PLTresolve at the end of glink. | |
9e390558 | 4009 | off_t resolve_size = this->glink_->pltresolve_size(); |
5fe7ffdc | 4010 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
4011 | len -= resolve_size; |
4012 | else | |
4013 | { | |
4014 | address += len - resolve_size; | |
4015 | len = resolve_size; | |
4016 | } | |
4017 | } | |
4018 | } | |
4019 | else | |
4020 | { | |
4021 | // Must be a stub table. | |
4022 | const Stub_table<size, big_endian>* stub_table | |
4023 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
4024 | uint64_t stub_address = stub_table->stub_address(); | |
4025 | len -= stub_address - address; | |
4026 | address = stub_address; | |
4027 | } | |
4028 | ||
4029 | *paddress = address; | |
4030 | *plen = len; | |
4031 | } | |
4032 | ||
42cacb20 DE |
4033 | // A class to handle the PLT data. |
4034 | ||
4035 | template<int size, bool big_endian> | |
cf43a2fe | 4036 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
4037 | { |
4038 | public: | |
4039 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4040 | size, big_endian> Reloc_section; | |
4041 | ||
e5d5f5ed AM |
4042 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
4043 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
4044 | const char* name) |
4045 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4046 | rel_(plt_rel), | |
4047 | targ_(targ), | |
e5d5f5ed AM |
4048 | name_(name) |
4049 | { } | |
42cacb20 DE |
4050 | |
4051 | // Add an entry to the PLT. | |
03e25981 | 4052 | void |
cf43a2fe | 4053 | add_entry(Symbol*); |
42cacb20 | 4054 | |
03e25981 | 4055 | void |
e5d5f5ed AM |
4056 | add_ifunc_entry(Symbol*); |
4057 | ||
2d7ad24e AM |
4058 | void |
4059 | add_local_entry(Sized_relobj_file<size, big_endian>*, unsigned int); | |
4060 | ||
03e25981 | 4061 | void |
e5d5f5ed AM |
4062 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
4063 | ||
42cacb20 | 4064 | // Return the .rela.plt section data. |
e5d5f5ed | 4065 | Reloc_section* |
cf43a2fe AM |
4066 | rel_plt() const |
4067 | { | |
42cacb20 DE |
4068 | return this->rel_; |
4069 | } | |
4070 | ||
0e70b911 CC |
4071 | // Return the number of PLT entries. |
4072 | unsigned int | |
4073 | entry_count() const | |
d83ce4e3 | 4074 | { |
b3ccdeb5 AM |
4075 | if (this->current_data_size() == 0) |
4076 | return 0; | |
b4f7960d AM |
4077 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
4078 | / this->plt_entry_size()); | |
d83ce4e3 | 4079 | } |
0e70b911 | 4080 | |
42cacb20 | 4081 | protected: |
42cacb20 | 4082 | void |
cf43a2fe | 4083 | do_adjust_output_section(Output_section* os) |
42cacb20 | 4084 | { |
cf43a2fe | 4085 | os->set_entsize(0); |
42cacb20 DE |
4086 | } |
4087 | ||
6ce78956 AM |
4088 | // Write to a map file. |
4089 | void | |
4090 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 4091 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 4092 | |
cf43a2fe | 4093 | private: |
b4f7960d AM |
4094 | // Return the offset of the first non-reserved PLT entry. |
4095 | unsigned int | |
4096 | first_plt_entry_offset() const | |
4097 | { | |
2d7ad24e AM |
4098 | // IPLT and LPLT have no reserved entry. |
4099 | if (this->name_[3] == 'I' || this->name_[3] == 'L') | |
b4f7960d AM |
4100 | return 0; |
4101 | return this->targ_->first_plt_entry_offset(); | |
4102 | } | |
4103 | ||
4104 | // Return the size of each PLT entry. | |
4105 | unsigned int | |
4106 | plt_entry_size() const | |
4107 | { | |
4108 | return this->targ_->plt_entry_size(); | |
4109 | } | |
cf43a2fe | 4110 | |
42cacb20 DE |
4111 | // Write out the PLT data. |
4112 | void | |
4113 | do_write(Output_file*); | |
4114 | ||
4115 | // The reloc section. | |
4116 | Reloc_section* rel_; | |
cf43a2fe AM |
4117 | // Allows access to .glink for do_write. |
4118 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
4119 | // What to report in map file. |
4120 | const char *name_; | |
42cacb20 DE |
4121 | }; |
4122 | ||
e5d5f5ed | 4123 | // Add an entry to the PLT. |
42cacb20 DE |
4124 | |
4125 | template<int size, bool big_endian> | |
03e25981 | 4126 | void |
e5d5f5ed | 4127 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 4128 | { |
e5d5f5ed AM |
4129 | if (!gsym->has_plt_offset()) |
4130 | { | |
ec661b9d | 4131 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4132 | if (off == 0) |
4133 | off += this->first_plt_entry_offset(); | |
4134 | gsym->set_plt_offset(off); | |
4135 | gsym->set_needs_dynsym_entry(); | |
4136 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4137 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 4138 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4139 | this->set_current_data_size(off); |
4140 | } | |
42cacb20 DE |
4141 | } |
4142 | ||
e5d5f5ed | 4143 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
4144 | |
4145 | template<int size, bool big_endian> | |
03e25981 | 4146 | void |
e5d5f5ed | 4147 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 4148 | { |
cf43a2fe AM |
4149 | if (!gsym->has_plt_offset()) |
4150 | { | |
ec661b9d | 4151 | section_size_type off = this->current_data_size(); |
cf43a2fe | 4152 | gsym->set_plt_offset(off); |
e5d5f5ed | 4153 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 4154 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4155 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4156 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 4157 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4158 | this->set_current_data_size(off); |
4159 | } | |
4160 | } | |
4161 | ||
2d7ad24e AM |
4162 | // Add an entry for a local symbol to the PLT. |
4163 | ||
4164 | template<int size, bool big_endian> | |
4165 | void | |
4166 | Output_data_plt_powerpc<size, big_endian>::add_local_entry( | |
4167 | Sized_relobj_file<size, big_endian>* relobj, | |
4168 | unsigned int local_sym_index) | |
4169 | { | |
4170 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4171 | { | |
4172 | section_size_type off = this->current_data_size(); | |
4173 | relobj->set_local_plt_offset(local_sym_index, off); | |
4174 | if (this->rel_) | |
4175 | { | |
4176 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; | |
4177 | if (size == 64 && this->targ_->abiversion() < 2) | |
4178 | dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4179 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, | |
4180 | dynrel, this, off, 0); | |
4181 | } | |
4182 | off += this->plt_entry_size(); | |
4183 | this->set_current_data_size(off); | |
4184 | } | |
4185 | } | |
4186 | ||
e5d5f5ed AM |
4187 | // Add an entry for a local ifunc symbol to the IPLT. |
4188 | ||
4189 | template<int size, bool big_endian> | |
03e25981 | 4190 | void |
e5d5f5ed AM |
4191 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
4192 | Sized_relobj_file<size, big_endian>* relobj, | |
4193 | unsigned int local_sym_index) | |
4194 | { | |
4195 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4196 | { | |
ec661b9d | 4197 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4198 | relobj->set_local_plt_offset(local_sym_index, off); |
4199 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 4200 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4201 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4202 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
4203 | this, off, 0); | |
b4f7960d | 4204 | off += this->plt_entry_size(); |
cf43a2fe AM |
4205 | this->set_current_data_size(off); |
4206 | } | |
42cacb20 DE |
4207 | } |
4208 | ||
dd93cd0a | 4209 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 4210 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 4211 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
4212 | static const uint32_t add_3_3_2 = 0x7c631214; |
4213 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
34e0882b AM |
4214 | static const uint32_t add_3_12_2 = 0x7c6c1214; |
4215 | static const uint32_t add_3_12_13 = 0x7c6c6a14; | |
dd93cd0a | 4216 | static const uint32_t add_11_0_11 = 0x7d605a14; |
b4f7960d AM |
4217 | static const uint32_t add_11_2_11 = 0x7d625a14; |
4218 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
32f59844 | 4219 | static const uint32_t add_12_11_12 = 0x7d8b6214; |
b4f7960d | 4220 | static const uint32_t addi_0_12 = 0x380c0000; |
dd93cd0a | 4221 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 4222 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 4223 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 4224 | static const uint32_t addi_12_1 = 0x39810000; |
32f59844 | 4225 | static const uint32_t addi_12_11 = 0x398b0000; |
b4f7960d | 4226 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
4227 | static const uint32_t addis_0_2 = 0x3c020000; |
4228 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 4229 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 4230 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
4231 | static const uint32_t addis_11_11 = 0x3d6b0000; |
4232 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 4233 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 4234 | static const uint32_t addis_12_2 = 0x3d820000; |
32f59844 | 4235 | static const uint32_t addis_12_11 = 0x3d8b0000; |
c9269dff | 4236 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
4237 | static const uint32_t b = 0x48000000; |
4238 | static const uint32_t bcl_20_31 = 0x429f0005; | |
4239 | static const uint32_t bctr = 0x4e800420; | |
34e0882b AM |
4240 | static const uint32_t bctrl = 0x4e800421; |
4241 | static const uint32_t beqlr = 0x4d820020; | |
f3a0ed29 | 4242 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 4243 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 4244 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 4245 | static const uint32_t cmpldi_2_0 = 0x28220000; |
34e0882b AM |
4246 | static const uint32_t cmpdi_11_0 = 0x2c2b0000; |
4247 | static const uint32_t cmpwi_11_0 = 0x2c0b0000; | |
dd93cd0a AM |
4248 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
4249 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 | 4250 | static const uint32_t ld_0_1 = 0xe8010000; |
63e5eea2 | 4251 | static const uint32_t ld_0_11 = 0xe80b0000; |
f3a0ed29 | 4252 | static const uint32_t ld_0_12 = 0xe80c0000; |
dd93cd0a | 4253 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 4254 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 4255 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 4256 | static const uint32_t ld_2_12 = 0xe84c0000; |
34e0882b | 4257 | static const uint32_t ld_11_1 = 0xe9610000; |
b4f7960d | 4258 | static const uint32_t ld_11_2 = 0xe9620000; |
34e0882b | 4259 | static const uint32_t ld_11_3 = 0xe9630000; |
b4f7960d AM |
4260 | static const uint32_t ld_11_11 = 0xe96b0000; |
4261 | static const uint32_t ld_12_2 = 0xe9820000; | |
34e0882b | 4262 | static const uint32_t ld_12_3 = 0xe9830000; |
b4f7960d | 4263 | static const uint32_t ld_12_11 = 0xe98b0000; |
9055360d | 4264 | static const uint32_t ld_12_12 = 0xe98c0000; |
32f59844 | 4265 | static const uint32_t ldx_12_11_12 = 0x7d8b602a; |
f3a0ed29 | 4266 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 4267 | static const uint32_t li_0_0 = 0x38000000; |
e4dff765 | 4268 | static const uint32_t li_11_0 = 0x39600000; |
f3a0ed29 | 4269 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 4270 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 4271 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
4272 | static const uint32_t lis_11 = 0x3d600000; |
4273 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 4274 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 4275 | static const uint32_t lwz_0_12 = 0x800c0000; |
34e0882b | 4276 | static const uint32_t lwz_11_3 = 0x81630000; |
c9269dff AM |
4277 | static const uint32_t lwz_11_11 = 0x816b0000; |
4278 | static const uint32_t lwz_11_30 = 0x817e0000; | |
34e0882b | 4279 | static const uint32_t lwz_12_3 = 0x81830000; |
c9269dff | 4280 | static const uint32_t lwz_12_12 = 0x818c0000; |
dd93cd0a | 4281 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 4282 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 4283 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff | 4284 | static const uint32_t mflr_12 = 0x7d8802a6; |
34e0882b AM |
4285 | static const uint32_t mr_0_3 = 0x7c601b78; |
4286 | static const uint32_t mr_3_0 = 0x7c030378; | |
c9269dff AM |
4287 | static const uint32_t mtctr_0 = 0x7c0903a6; |
4288 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 4289 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 4290 | static const uint32_t mtlr_0 = 0x7c0803a6; |
34e0882b | 4291 | static const uint32_t mtlr_11 = 0x7d6803a6; |
c9269dff | 4292 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 4293 | static const uint32_t nop = 0x60000000; |
c9269dff | 4294 | static const uint32_t ori_0_0_0 = 0x60000000; |
e4dff765 | 4295 | static const uint32_t ori_11_11_0 = 0x616b0000; |
32f59844 AM |
4296 | static const uint32_t ori_12_12_0 = 0x618c0000; |
4297 | static const uint32_t oris_12_12_0 = 0x658c0000; | |
e4dff765 | 4298 | static const uint32_t sldi_11_11_34 = 0x796b1746; |
32f59844 | 4299 | static const uint32_t sldi_12_12_32 = 0x799c07c6; |
b4f7960d | 4300 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
4301 | static const uint32_t std_0_1 = 0xf8010000; |
4302 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 4303 | static const uint32_t std_2_1 = 0xf8410000; |
34e0882b | 4304 | static const uint32_t std_11_1 = 0xf9610000; |
f3a0ed29 AM |
4305 | static const uint32_t stfd_0_1 = 0xd8010000; |
4306 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 4307 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
4308 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
4309 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
4310 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 | 4311 | |
e4dff765 AM |
4312 | static const uint64_t paddi_12_pc = 0x0610000039800000ULL; |
4313 | static const uint64_t pld_12_pc = 0x04100000e5800000ULL; | |
4314 | static const uint64_t pnop = 0x0700000000000000ULL; | |
4315 | ||
42cacb20 DE |
4316 | // Write out the PLT. |
4317 | ||
4318 | template<int size, bool big_endian> | |
4319 | void | |
4320 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4321 | { | |
2d7ad24e | 4322 | if (size == 32 && (this->name_[3] != 'I' && this->name_[3] != 'L')) |
cf43a2fe | 4323 | { |
ec661b9d | 4324 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
4325 | const section_size_type oview_size |
4326 | = convert_to_section_size_type(this->data_size()); | |
4327 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4328 | unsigned char* pov = oview; | |
4329 | unsigned char* endpov = oview + oview_size; | |
4330 | ||
e5d5f5ed | 4331 | // The address of the .glink branch table |
cf43a2fe AM |
4332 | const Output_data_glink<size, big_endian>* glink |
4333 | = this->targ_->glink_section(); | |
ec661b9d | 4334 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
4335 | |
4336 | while (pov < endpov) | |
4337 | { | |
4338 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
4339 | pov += 4; | |
4340 | branch_tab += 4; | |
4341 | } | |
4342 | ||
4343 | of->write_output_view(offset, oview_size, oview); | |
4344 | } | |
4345 | } | |
4346 | ||
4347 | // Create the PLT section. | |
4348 | ||
4349 | template<int size, bool big_endian> | |
4350 | void | |
40b469d7 AM |
4351 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
4352 | Layout* layout) | |
cf43a2fe AM |
4353 | { |
4354 | if (this->plt_ == NULL) | |
4355 | { | |
40b469d7 AM |
4356 | if (this->got_ == NULL) |
4357 | this->got_section(symtab, layout); | |
4358 | ||
cf43a2fe AM |
4359 | if (this->glink_ == NULL) |
4360 | make_glink_section(layout); | |
4361 | ||
4362 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
4363 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 4364 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
4365 | this->rela_dyn_section(layout); |
4366 | ||
e5d5f5ed AM |
4367 | Reloc_section* plt_rel = new Reloc_section(false); |
4368 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
4369 | elfcpp::SHF_ALLOC, plt_rel, | |
4370 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
4371 | this->plt_ | |
4372 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 4373 | "** PLT"); |
cf43a2fe AM |
4374 | layout->add_output_section_data(".plt", |
4375 | (size == 32 | |
4376 | ? elfcpp::SHT_PROGBITS | |
4377 | : elfcpp::SHT_NOBITS), | |
4378 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4379 | this->plt_, | |
4380 | (size == 32 | |
4381 | ? ORDER_SMALL_DATA | |
4382 | : ORDER_SMALL_BSS), | |
4383 | false); | |
3254d32c AM |
4384 | |
4385 | Output_section* rela_plt_os = plt_rel->output_section(); | |
4386 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
4387 | } |
4388 | } | |
4389 | ||
e5d5f5ed AM |
4390 | // Create the IPLT section. |
4391 | ||
4392 | template<int size, bool big_endian> | |
4393 | void | |
40b469d7 AM |
4394 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
4395 | Layout* layout) | |
e5d5f5ed AM |
4396 | { |
4397 | if (this->iplt_ == NULL) | |
4398 | { | |
40b469d7 | 4399 | this->make_plt_section(symtab, layout); |
2d7ad24e | 4400 | this->make_lplt_section(layout); |
e5d5f5ed AM |
4401 | |
4402 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
4403 | if (this->rela_dyn_->output_section()) |
4404 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
4405 | this->iplt_ |
4406 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 4407 | "** IPLT"); |
6528b6eb AM |
4408 | if (this->plt_->output_section()) |
4409 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
4410 | } |
4411 | } | |
4412 | ||
2d7ad24e AM |
4413 | // Create the LPLT section. |
4414 | ||
4415 | template<int size, bool big_endian> | |
4416 | void | |
4417 | Target_powerpc<size, big_endian>::make_lplt_section(Layout* layout) | |
4418 | { | |
4419 | if (this->lplt_ == NULL) | |
4420 | { | |
4421 | Reloc_section* lplt_rel = NULL; | |
4422 | if (parameters->options().output_is_position_independent()) | |
4423 | { | |
4424 | lplt_rel = new Reloc_section(false); | |
4425 | this->rela_dyn_section(layout); | |
4426 | if (this->rela_dyn_->output_section()) | |
4427 | this->rela_dyn_->output_section() | |
4428 | ->add_output_section_data(lplt_rel); | |
4429 | } | |
4430 | this->lplt_ | |
4431 | = new Output_data_plt_powerpc<size, big_endian>(this, lplt_rel, | |
4432 | "** LPLT"); | |
4433 | this->make_brlt_section(layout); | |
4434 | if (this->brlt_section_ && this->brlt_section_->output_section()) | |
4435 | this->brlt_section_->output_section() | |
4436 | ->add_output_section_data(this->lplt_); | |
4437 | else | |
4438 | layout->add_output_section_data(".branch_lt", | |
4439 | elfcpp::SHT_PROGBITS, | |
4440 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4441 | this->lplt_, | |
4442 | ORDER_RELRO, | |
4443 | true); | |
4444 | } | |
4445 | } | |
4446 | ||
ec661b9d | 4447 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
4448 | |
4449 | template<int size, bool big_endian> | |
ec661b9d | 4450 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
4451 | { |
4452 | public: | |
ec661b9d AM |
4453 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4454 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4455 | size, big_endian> Reloc_section; | |
c9269dff | 4456 | |
ec661b9d AM |
4457 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
4458 | Reloc_section* brlt_rel) | |
4459 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4460 | rel_(brlt_rel), | |
4461 | targ_(targ) | |
4462 | { } | |
cf43a2fe | 4463 | |
06f30c9d CC |
4464 | void |
4465 | reset_brlt_sizes() | |
4466 | { | |
4467 | this->reset_data_size(); | |
4468 | this->rel_->reset_data_size(); | |
4469 | } | |
4470 | ||
4471 | void | |
4472 | finalize_brlt_sizes() | |
4473 | { | |
4474 | this->finalize_data_size(); | |
4475 | this->rel_->finalize_data_size(); | |
4476 | } | |
4477 | ||
ec661b9d | 4478 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 4479 | void |
ec661b9d AM |
4480 | add_reloc(Address to, unsigned int off) |
4481 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 4482 | |
ec661b9d | 4483 | // Update section and reloc section size. |
e5d5f5ed | 4484 | void |
ec661b9d AM |
4485 | set_current_size(unsigned int num_branches) |
4486 | { | |
4487 | this->reset_address_and_file_offset(); | |
4488 | this->set_current_data_size(num_branches * 16); | |
4489 | this->finalize_data_size(); | |
4490 | Output_section* os = this->output_section(); | |
4491 | os->set_section_offsets_need_adjustment(); | |
4492 | if (this->rel_ != NULL) | |
4493 | { | |
0e123f69 | 4494 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
4495 | this->rel_->reset_address_and_file_offset(); |
4496 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
4497 | this->rel_->finalize_data_size(); | |
4498 | Output_section* os = this->rel_->output_section(); | |
4499 | os->set_section_offsets_need_adjustment(); | |
4500 | } | |
4501 | } | |
cf43a2fe | 4502 | |
ec661b9d AM |
4503 | protected: |
4504 | void | |
4505 | do_adjust_output_section(Output_section* os) | |
4506 | { | |
4507 | os->set_entsize(0); | |
4508 | } | |
e5d5f5ed | 4509 | |
ec661b9d AM |
4510 | // Write to a map file. |
4511 | void | |
4512 | do_print_to_mapfile(Mapfile* mapfile) const | |
4513 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 4514 | |
ec661b9d AM |
4515 | private: |
4516 | // Write out the BRLT data. | |
4517 | void | |
4518 | do_write(Output_file*); | |
c9824451 | 4519 | |
ec661b9d AM |
4520 | // The reloc section. |
4521 | Reloc_section* rel_; | |
4522 | Target_powerpc<size, big_endian>* targ_; | |
4523 | }; | |
cf43a2fe | 4524 | |
ec661b9d AM |
4525 | // Make the branch lookup table section. |
4526 | ||
4527 | template<int size, bool big_endian> | |
4528 | void | |
4529 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
4530 | { | |
4531 | if (size == 64 && this->brlt_section_ == NULL) | |
4532 | { | |
4533 | Reloc_section* brlt_rel = NULL; | |
4534 | bool is_pic = parameters->options().output_is_position_independent(); | |
4535 | if (is_pic) | |
4536 | { | |
54483898 AM |
4537 | // When PIC we can't fill in .branch_lt but must initialise at |
4538 | // runtime via dynamic relocations. | |
ec661b9d AM |
4539 | this->rela_dyn_section(layout); |
4540 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
4541 | if (this->rela_dyn_->output_section()) |
4542 | this->rela_dyn_->output_section() | |
4543 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
4544 | } |
4545 | this->brlt_section_ | |
4546 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 4547 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
4548 | this->plt_->output_section() |
4549 | ->add_output_section_data(this->brlt_section_); | |
4550 | else | |
6830ee24 | 4551 | layout->add_output_section_data(".branch_lt", |
54483898 | 4552 | elfcpp::SHT_PROGBITS, |
ec661b9d AM |
4553 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, |
4554 | this->brlt_section_, | |
54483898 AM |
4555 | ORDER_RELRO, |
4556 | true); | |
ec661b9d AM |
4557 | } |
4558 | } | |
4559 | ||
6830ee24 | 4560 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
4561 | |
4562 | template<int size, bool big_endian> | |
4563 | void | |
4564 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4565 | { | |
4566 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
4567 | { | |
4568 | const section_size_type offset = this->offset(); | |
4569 | const section_size_type oview_size | |
4570 | = convert_to_section_size_type(this->data_size()); | |
4571 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4572 | ||
4573 | this->targ_->write_branch_lookup_table(oview); | |
4574 | of->write_output_view(offset, oview_size, oview); | |
4575 | } | |
4576 | } | |
4577 | ||
9e69ed50 AM |
4578 | static inline uint32_t |
4579 | l(uint32_t a) | |
4580 | { | |
4581 | return a & 0xffff; | |
4582 | } | |
4583 | ||
4584 | static inline uint32_t | |
4585 | hi(uint32_t a) | |
4586 | { | |
4587 | return l(a >> 16); | |
4588 | } | |
4589 | ||
4590 | static inline uint32_t | |
4591 | ha(uint32_t a) | |
4592 | { | |
4593 | return hi(a + 0x8000); | |
4594 | } | |
4595 | ||
e4dff765 AM |
4596 | static inline uint64_t |
4597 | d34(uint64_t v) | |
4598 | { | |
4599 | return ((v & 0x3ffff0000ULL) << 16) | (v & 0xffff); | |
4600 | } | |
4601 | ||
4602 | static inline uint64_t | |
4603 | ha34(uint64_t v) | |
4604 | { | |
4605 | return (v + (1ULL << 33)) >> 34; | |
4606 | } | |
4607 | ||
9d5781f8 AM |
4608 | template<int size> |
4609 | struct Eh_cie | |
4610 | { | |
4611 | static const unsigned char eh_frame_cie[12]; | |
4612 | }; | |
4613 | ||
4614 | template<int size> | |
4615 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
4616 | { | |
4617 | 1, // CIE version. | |
4618 | 'z', 'R', 0, // Augmentation string. | |
4619 | 4, // Code alignment. | |
4620 | 0x80 - size / 8 , // Data alignment. | |
4621 | 65, // RA reg. | |
4622 | 1, // Augmentation size. | |
4623 | (elfcpp::DW_EH_PE_pcrel | |
4624 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
4625 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
4626 | }; | |
4627 | ||
b4f7960d AM |
4628 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
4629 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
4630 | { |
4631 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4632 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4633 | 0, // Augmentation size. | |
63e5eea2 | 4634 | elfcpp::DW_CFA_advance_loc + 2, |
9d5781f8 | 4635 | elfcpp::DW_CFA_register, 65, 12, |
63e5eea2 | 4636 | elfcpp::DW_CFA_advance_loc + 4, |
9d5781f8 AM |
4637 | elfcpp::DW_CFA_restore_extended, 65 |
4638 | }; | |
4639 | ||
b4f7960d AM |
4640 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
4641 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
4642 | { | |
4643 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4644 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4645 | 0, // Augmentation size. | |
63e5eea2 | 4646 | elfcpp::DW_CFA_advance_loc + 2, |
b4f7960d | 4647 | elfcpp::DW_CFA_register, 65, 0, |
63e5eea2 AM |
4648 | elfcpp::DW_CFA_advance_loc + 2, |
4649 | elfcpp::DW_CFA_restore_extended, 65 | |
4650 | }; | |
4651 | ||
4652 | static const unsigned char glink_eh_frame_fde_64v2_localentry0[] = | |
4653 | { | |
4654 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4655 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4656 | 0, // Augmentation size. | |
4657 | elfcpp::DW_CFA_advance_loc + 3, | |
4658 | elfcpp::DW_CFA_register, 65, 0, | |
4659 | elfcpp::DW_CFA_advance_loc + 2, | |
b4f7960d AM |
4660 | elfcpp::DW_CFA_restore_extended, 65 |
4661 | }; | |
4662 | ||
9d5781f8 AM |
4663 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4664 | static const unsigned char glink_eh_frame_fde_32[] = | |
4665 | { | |
4666 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4667 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4668 | 0, // Augmentation size. | |
4669 | elfcpp::DW_CFA_advance_loc + 2, | |
4670 | elfcpp::DW_CFA_register, 65, 0, | |
4671 | elfcpp::DW_CFA_advance_loc + 4, | |
4672 | elfcpp::DW_CFA_restore_extended, 65 | |
4673 | }; | |
4674 | ||
4675 | static const unsigned char default_fde[] = | |
4676 | { | |
4677 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4678 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4679 | 0, // Augmentation size. | |
4680 | elfcpp::DW_CFA_nop, // Pad. | |
4681 | elfcpp::DW_CFA_nop, | |
4682 | elfcpp::DW_CFA_nop | |
4683 | }; | |
4684 | ||
9e69ed50 AM |
4685 | template<bool big_endian> |
4686 | static inline void | |
4687 | write_insn(unsigned char* p, uint32_t v) | |
4688 | { | |
4689 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4690 | } | |
4691 | ||
691d2e9a AM |
4692 | template<int size> |
4693 | static inline unsigned int | |
4694 | param_plt_align() | |
4695 | { | |
4696 | if (!parameters->options().user_set_plt_align()) | |
4697 | return size == 64 ? 32 : 8; | |
4698 | return 1 << parameters->options().plt_align(); | |
4699 | } | |
4700 | ||
ec661b9d AM |
4701 | // Stub_table holds information about plt and long branch stubs. |
4702 | // Stubs are built in an area following some input section determined | |
4703 | // by group_sections(). This input section is converted to a relaxed | |
4704 | // input section allowing it to be resized to accommodate the stubs | |
4705 | ||
4706 | template<int size, bool big_endian> | |
4707 | class Stub_table : public Output_relaxed_input_section | |
4708 | { | |
4709 | public: | |
7e57d19e AM |
4710 | struct Plt_stub_ent |
4711 | { | |
4712 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
afd2ea23 AM |
4713 | : off_(off), indx_(indx), iter_(0), notoc_(0), toc_(0), |
4714 | r2save_(0), localentry0_(0), tocoff_(0) | |
7e57d19e AM |
4715 | { } |
4716 | ||
4717 | unsigned int off_; | |
afd2ea23 | 4718 | unsigned int indx_; |
32f59844 AM |
4719 | unsigned int iter_ : 1; |
4720 | unsigned int notoc_ : 1; | |
afd2ea23 | 4721 | unsigned int toc_ : 1; |
7e57d19e | 4722 | unsigned int r2save_ : 1; |
7ee7ff70 | 4723 | unsigned int localentry0_ : 1; |
afd2ea23 | 4724 | unsigned int tocoff_ : 8; |
7e57d19e | 4725 | }; |
32f59844 AM |
4726 | struct Branch_stub_ent |
4727 | { | |
4728 | Branch_stub_ent(unsigned int off, bool notoc, bool save_res) | |
afd2ea23 | 4729 | : off_(off), iter_(0), notoc_(notoc), toc_(0), save_res_(save_res), |
fa40fbe4 | 4730 | other_(0), tocoff_(0) |
32f59844 AM |
4731 | { } |
4732 | ||
4733 | unsigned int off_; | |
afd2ea23 AM |
4734 | unsigned int iter_ : 1; |
4735 | unsigned int notoc_ : 1; | |
4736 | unsigned int toc_ : 1; | |
4737 | unsigned int save_res_ : 1; | |
fa40fbe4 | 4738 | unsigned int other_ : 3; |
afd2ea23 | 4739 | unsigned int tocoff_ : 8; |
32f59844 | 4740 | }; |
ec661b9d AM |
4741 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4742 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4743 | ||
a3e60ddb AM |
4744 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4745 | Output_section* output_section, | |
590b87ff AM |
4746 | const Output_section::Input_section* owner, |
4747 | uint32_t id) | |
a3e60ddb AM |
4748 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4749 | owner->relobj() | |
4750 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4751 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4752 | orig_data_size_(owner->current_data_size()), |
4753 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4754 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
32f59844 | 4755 | need_save_res_(false), need_resize_(false), resizing_(false), |
220f9906 | 4756 | uniq_(id) |
a3e60ddb AM |
4757 | { |
4758 | this->set_output_section(output_section); | |
ec661b9d | 4759 | |
a3e60ddb AM |
4760 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4761 | new_relaxed.push_back(this); | |
4762 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4763 | } | |
ec661b9d AM |
4764 | |
4765 | // Add a plt call stub. | |
a3e60ddb AM |
4766 | bool |
4767 | add_plt_call_entry(Address, | |
4768 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4769 | const Symbol*, |
4770 | unsigned int, | |
7e57d19e AM |
4771 | Address, |
4772 | bool); | |
ec661b9d | 4773 | |
a3e60ddb AM |
4774 | bool |
4775 | add_plt_call_entry(Address, | |
4776 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4777 | unsigned int, |
4778 | unsigned int, | |
7e57d19e AM |
4779 | Address, |
4780 | bool); | |
ec661b9d AM |
4781 | |
4782 | // Find a given plt call stub. | |
7e57d19e | 4783 | const Plt_stub_ent* |
ec661b9d AM |
4784 | find_plt_call_entry(const Symbol*) const; |
4785 | ||
7e57d19e | 4786 | const Plt_stub_ent* |
ec661b9d AM |
4787 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4788 | unsigned int) const; | |
4789 | ||
7e57d19e | 4790 | const Plt_stub_ent* |
ec661b9d AM |
4791 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4792 | const Symbol*, | |
4793 | unsigned int, | |
4794 | Address) const; | |
4795 | ||
7e57d19e | 4796 | const Plt_stub_ent* |
ec661b9d AM |
4797 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4798 | unsigned int, | |
4799 | unsigned int, | |
4800 | Address) const; | |
4801 | ||
4802 | // Add a long branch stub. | |
a3e60ddb AM |
4803 | bool |
4804 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
fa40fbe4 | 4805 | unsigned int, Address, Address, unsigned int, bool); |
ec661b9d | 4806 | |
32f59844 | 4807 | const Branch_stub_ent* |
9d5781f8 AM |
4808 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4809 | Address) const; | |
ec661b9d | 4810 | |
a3e60ddb AM |
4811 | bool |
4812 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4813 | { | |
32f59844 | 4814 | Address max_branch_offset = max_branch_delta<size>(r_type); |
a3e60ddb AM |
4815 | if (max_branch_offset == 0) |
4816 | return true; | |
4817 | gold_assert(from != invalid_address); | |
4818 | Address loc = off + this->stub_address(); | |
4819 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4820 | } | |
4821 | ||
ec661b9d | 4822 | void |
a3e60ddb | 4823 | clear_stubs(bool all) |
cf43a2fe | 4824 | { |
9e69ed50 AM |
4825 | this->plt_call_stubs_.clear(); |
4826 | this->plt_size_ = 0; | |
ec661b9d AM |
4827 | this->long_branch_stubs_.clear(); |
4828 | this->branch_size_ = 0; | |
d49044c7 | 4829 | this->need_save_res_ = false; |
a3e60ddb AM |
4830 | if (all) |
4831 | { | |
4832 | this->last_plt_size_ = 0; | |
4833 | this->last_branch_size_ = 0; | |
4834 | } | |
cf43a2fe AM |
4835 | } |
4836 | ||
32f59844 AM |
4837 | bool |
4838 | need_resize() const | |
4839 | { return need_resize_; } | |
4840 | ||
4841 | void | |
4842 | set_resizing(bool val) | |
4843 | { | |
4844 | this->resizing_ = val; | |
4845 | if (val) | |
4846 | { | |
4847 | this->need_resize_ = false; | |
4848 | this->plt_size_ = 0; | |
4849 | this->branch_size_ = 0; | |
4850 | this->need_save_res_ = false; | |
4851 | } | |
4852 | } | |
4853 | ||
ec661b9d AM |
4854 | Address |
4855 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4856 | { |
ec661b9d AM |
4857 | Address start_off = off; |
4858 | off += this->orig_data_size_; | |
4859 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4860 | if (this->need_save_res_) |
4861 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4862 | if (my_size != 0) |
4863 | off = align_address(off, this->stub_align()); | |
4864 | // Include original section size and alignment padding in size | |
4865 | my_size += off - start_off; | |
6395d38b HS |
4866 | // Ensure new size is always larger than min size |
4867 | // threshold. Alignment requirement is included in "my_size", so | |
4868 | // increase "my_size" does not invalidate alignment. | |
4869 | if (my_size < this->min_size_threshold_) | |
4870 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4871 | this->reset_address_and_file_offset(); |
4872 | this->set_current_data_size(my_size); | |
4873 | this->set_address_and_file_offset(os->address() + start_off, | |
4874 | os->offset() + start_off); | |
4875 | return my_size; | |
cf43a2fe AM |
4876 | } |
4877 | ||
ec661b9d | 4878 | Address |
9d5781f8 | 4879 | stub_address() const |
ec661b9d AM |
4880 | { |
4881 | return align_address(this->address() + this->orig_data_size_, | |
4882 | this->stub_align()); | |
4883 | } | |
4884 | ||
4885 | Address | |
9d5781f8 | 4886 | stub_offset() const |
ec661b9d AM |
4887 | { |
4888 | return align_address(this->offset() + this->orig_data_size_, | |
4889 | this->stub_align()); | |
4890 | } | |
4891 | ||
4892 | section_size_type | |
4893 | plt_size() const | |
4894 | { return this->plt_size_; } | |
4895 | ||
32f59844 AM |
4896 | section_size_type |
4897 | branch_size() const | |
4898 | { return this->branch_size_; } | |
4899 | ||
590b87ff AM |
4900 | void |
4901 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4902 | { this->min_size_threshold_ = min_size; } |
4903 | ||
590b87ff AM |
4904 | void |
4905 | define_stub_syms(Symbol_table*); | |
4906 | ||
ec661b9d AM |
4907 | bool |
4908 | size_update() | |
4909 | { | |
4910 | Output_section* os = this->output_section(); | |
4911 | if (os->addralign() < this->stub_align()) | |
4912 | { | |
4913 | os->set_addralign(this->stub_align()); | |
4914 | // FIXME: get rid of the insane checkpointing. | |
4915 | // We can't increase alignment of the input section to which | |
4916 | // stubs are attached; The input section may be .init which | |
4917 | // is pasted together with other .init sections to form a | |
4918 | // function. Aligning might insert zero padding resulting in | |
4919 | // sigill. However we do need to increase alignment of the | |
4920 | // output section so that the align_address() on offset in | |
4921 | // set_address_and_size() adds the same padding as the | |
4922 | // align_address() on address in stub_address(). | |
4923 | // What's more, we need this alignment for the layout done in | |
4924 | // relaxation_loop_body() so that the output section starts at | |
4925 | // a suitably aligned address. | |
4926 | os->checkpoint_set_addralign(this->stub_align()); | |
4927 | } | |
9e69ed50 AM |
4928 | if (this->last_plt_size_ != this->plt_size_ |
4929 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4930 | { |
9e69ed50 AM |
4931 | this->last_plt_size_ = this->plt_size_; |
4932 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4933 | return true; |
4934 | } | |
4935 | return false; | |
4936 | } | |
4937 | ||
34e0882b AM |
4938 | // Add .eh_frame info for this stub section. |
4939 | void | |
4940 | add_eh_frame(Layout* layout); | |
be897fb7 | 4941 | |
34e0882b | 4942 | // Remove .eh_frame info for this stub section. |
be897fb7 | 4943 | void |
34e0882b | 4944 | remove_eh_frame(Layout* layout); |
9d5781f8 | 4945 | |
ec661b9d AM |
4946 | Target_powerpc<size, big_endian>* |
4947 | targ() const | |
4948 | { return targ_; } | |
6ce78956 | 4949 | |
cf43a2fe | 4950 | private: |
bdab445c AM |
4951 | class Plt_stub_key; |
4952 | class Plt_stub_key_hash; | |
bdab445c AM |
4953 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4954 | Plt_stub_key_hash> Plt_stub_entries; | |
32f59844 AM |
4955 | class Branch_stub_key; |
4956 | class Branch_stub_key_hash; | |
4957 | typedef Unordered_map<Branch_stub_key, Branch_stub_ent, | |
4958 | Branch_stub_key_hash> Branch_stub_entries; | |
9e69ed50 AM |
4959 | |
4960 | // Alignment of stub section. | |
ec661b9d | 4961 | unsigned int |
9e69ed50 AM |
4962 | stub_align() const |
4963 | { | |
691d2e9a | 4964 | unsigned int min_align = size == 64 ? 32 : 16; |
9e69ed50 AM |
4965 | unsigned int user_align = 1 << parameters->options().plt_align(); |
4966 | return std::max(user_align, min_align); | |
4967 | } | |
cf43a2fe | 4968 | |
91c2b899 AM |
4969 | // Return the plt offset for the given call stub. |
4970 | Address | |
08be3224 AM |
4971 | plt_off(typename Plt_stub_entries::const_iterator p, |
4972 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
91c2b899 AM |
4973 | { |
4974 | const Symbol* gsym = p->first.sym_; | |
4975 | if (gsym != NULL) | |
08be3224 | 4976 | return this->targ_->plt_off(gsym, sec); |
91c2b899 AM |
4977 | else |
4978 | { | |
91c2b899 AM |
4979 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; |
4980 | unsigned int local_sym_index = p->first.locsym_; | |
08be3224 | 4981 | return this->targ_->plt_off(relobj, local_sym_index, sec); |
91c2b899 AM |
4982 | } |
4983 | } | |
4984 | ||
9e69ed50 | 4985 | // Size of a given plt call stub. |
ec661b9d | 4986 | unsigned int |
afd2ea23 | 4987 | plt_call_size(typename Plt_stub_entries::iterator p) const; |
34e0882b AM |
4988 | |
4989 | unsigned int | |
4990 | plt_call_align(unsigned int bytes) const | |
4991 | { | |
691d2e9a | 4992 | unsigned int align = param_plt_align<size>(); |
9e390558 | 4993 | return (bytes + align - 1) & -align; |
9e69ed50 | 4994 | } |
ec661b9d AM |
4995 | |
4996 | // Return long branch stub size. | |
4997 | unsigned int | |
afd2ea23 | 4998 | branch_stub_size(typename Branch_stub_entries::iterator p, |
32f59844 AM |
4999 | bool* need_lt); |
5000 | ||
afd2ea23 AM |
5001 | void |
5002 | build_tls_opt_head(unsigned char** pp, bool save_lr); | |
32f59844 | 5003 | |
afd2ea23 AM |
5004 | void |
5005 | build_tls_opt_tail(unsigned char* p); | |
ec661b9d | 5006 | |
f073a3e8 AM |
5007 | void |
5008 | plt_error(const Plt_stub_key& p); | |
5009 | ||
ec661b9d | 5010 | // Write out stubs. |
cf43a2fe AM |
5011 | void |
5012 | do_write(Output_file*); | |
5013 | ||
ec661b9d | 5014 | // Plt call stub keys. |
bdab445c | 5015 | class Plt_stub_key |
cf43a2fe | 5016 | { |
d1a8cabd | 5017 | public: |
bdab445c | 5018 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
5019 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
5020 | { } | |
5021 | ||
bdab445c | 5022 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 5023 | unsigned int locsym_index) |
c9824451 AM |
5024 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
5025 | { } | |
5026 | ||
bdab445c | 5027 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
5028 | const Symbol* sym, |
5029 | unsigned int r_type, | |
5030 | Address addend) | |
e5d5f5ed | 5031 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
5032 | { |
5033 | if (size != 32) | |
ec661b9d | 5034 | this->addend_ = addend; |
d1a8cabd | 5035 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
5036 | && (r_type == elfcpp::R_PPC_PLTREL24 |
5037 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
cf43a2fe | 5038 | { |
ec661b9d | 5039 | this->addend_ = addend; |
e5d5f5ed | 5040 | if (this->addend_ >= 32768) |
d1a8cabd | 5041 | this->object_ = object; |
cf43a2fe AM |
5042 | } |
5043 | } | |
5044 | ||
bdab445c | 5045 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
5046 | unsigned int locsym_index, |
5047 | unsigned int r_type, | |
5048 | Address addend) | |
e5d5f5ed AM |
5049 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
5050 | { | |
5051 | if (size != 32) | |
ec661b9d | 5052 | this->addend_ = addend; |
e5d5f5ed | 5053 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
5054 | && (r_type == elfcpp::R_PPC_PLTREL24 |
5055 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
ec661b9d | 5056 | this->addend_ = addend; |
e5d5f5ed AM |
5057 | } |
5058 | ||
bdab445c | 5059 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
5060 | { |
5061 | return (this->sym_ == that.sym_ | |
5062 | && this->object_ == that.object_ | |
e5d5f5ed AM |
5063 | && this->addend_ == that.addend_ |
5064 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 5065 | } |
c9269dff AM |
5066 | |
5067 | const Symbol* sym_; | |
e5d5f5ed AM |
5068 | const Sized_relobj_file<size, big_endian>* object_; |
5069 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
5070 | unsigned int locsym_; | |
cf43a2fe AM |
5071 | }; |
5072 | ||
bdab445c | 5073 | class Plt_stub_key_hash |
cf43a2fe | 5074 | { |
d1a8cabd | 5075 | public: |
bdab445c | 5076 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
5077 | { |
5078 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
5079 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
5080 | ^ ent.addend_ |
5081 | ^ ent.locsym_); | |
cf43a2fe | 5082 | } |
ec661b9d AM |
5083 | }; |
5084 | ||
5085 | // Long branch stub keys. | |
32f59844 | 5086 | class Branch_stub_key |
ec661b9d AM |
5087 | { |
5088 | public: | |
32f59844 AM |
5089 | Branch_stub_key(const Powerpc_relobj<size, big_endian>* obj, Address to) |
5090 | : dest_(to), toc_base_off_(0) | |
ec661b9d AM |
5091 | { |
5092 | if (size == 64) | |
5093 | toc_base_off_ = obj->toc_base_offset(); | |
5094 | } | |
5095 | ||
32f59844 | 5096 | bool operator==(const Branch_stub_key& that) const |
ec661b9d AM |
5097 | { |
5098 | return (this->dest_ == that.dest_ | |
5099 | && (size == 32 | |
5100 | || this->toc_base_off_ == that.toc_base_off_)); | |
5101 | } | |
cf43a2fe | 5102 | |
ec661b9d AM |
5103 | Address dest_; |
5104 | unsigned int toc_base_off_; | |
5105 | }; | |
cf43a2fe | 5106 | |
32f59844 | 5107 | class Branch_stub_key_hash |
ec661b9d AM |
5108 | { |
5109 | public: | |
32f59844 AM |
5110 | size_t operator()(const Branch_stub_key& key) const |
5111 | { return key.dest_ ^ key.toc_base_off_; } | |
ec661b9d | 5112 | }; |
cf43a2fe | 5113 | |
ec661b9d | 5114 | // In a sane world this would be a global. |
cf43a2fe | 5115 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 5116 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
5117 | Plt_stub_entries plt_call_stubs_; |
5118 | // Map destination address to stub offset. | |
ec661b9d AM |
5119 | Branch_stub_entries long_branch_stubs_; |
5120 | // size of input section | |
5121 | section_size_type orig_data_size_; | |
5122 | // size of stubs | |
9e69ed50 | 5123 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
5124 | // Some rare cases cause (PR/20529) fluctuation in stub table |
5125 | // size, which leads to an endless relax loop. This is to be fixed | |
5126 | // by, after the first few iterations, allowing only increase of | |
5127 | // stub table size. This variable sets the minimal possible size of | |
5128 | // a stub table, it is zero for the first few iterations, then | |
5129 | // increases monotonically. | |
5130 | Address min_size_threshold_; | |
d49044c7 AM |
5131 | // Set if this stub group needs a copy of out-of-line register |
5132 | // save/restore functions. | |
5133 | bool need_save_res_; | |
32f59844 AM |
5134 | // Set when notoc_/r2save_ changes after sizing a stub |
5135 | bool need_resize_; | |
5136 | // Set when resizing stubs | |
5137 | bool resizing_; | |
590b87ff AM |
5138 | // Per stub table unique identifier. |
5139 | uint32_t uniq_; | |
cf43a2fe AM |
5140 | }; |
5141 | ||
ec661b9d | 5142 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 5143 | // sym/object/addend combo. |
cf43a2fe AM |
5144 | |
5145 | template<int size, bool big_endian> | |
a3e60ddb | 5146 | bool |
ec661b9d | 5147 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5148 | Address from, |
c9824451 | 5149 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5150 | const Symbol* gsym, |
ec661b9d | 5151 | unsigned int r_type, |
7e57d19e AM |
5152 | Address addend, |
5153 | bool tocsave) | |
cf43a2fe | 5154 | { |
bdab445c AM |
5155 | Plt_stub_key key(object, gsym, r_type, addend); |
5156 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5157 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5158 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5159 | if (size == 64) |
7ee7ff70 | 5160 | { |
32f59844 | 5161 | if (p.second |
7ee7ff70 AM |
5162 | && this->targ_->is_elfv2_localentry0(gsym)) |
5163 | { | |
5164 | p.first->second.localentry0_ = 1; | |
5165 | this->targ_->set_has_localentry0(); | |
5166 | } | |
32f59844 AM |
5167 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5168 | { | |
e4dff765 | 5169 | if (!p.second && !p.first->second.notoc_ |
afd2ea23 AM |
5170 | && (!this->targ_->power10_stubs() |
5171 | || this->targ_->power10_stubs_auto())) | |
32f59844 AM |
5172 | this->need_resize_ = true; |
5173 | p.first->second.notoc_ = 1; | |
5174 | } | |
afd2ea23 | 5175 | else |
32f59844 | 5176 | { |
afd2ea23 | 5177 | if (!p.second && !p.first->second.toc_) |
32f59844 | 5178 | this->need_resize_ = true; |
afd2ea23 AM |
5179 | p.first->second.toc_ = 1; |
5180 | if (!tocsave && !p.first->second.localentry0_) | |
5181 | { | |
5182 | if (!p.second && !p.first->second.r2save_) | |
5183 | this->need_resize_ = true; | |
5184 | p.first->second.r2save_ = 1; | |
5185 | } | |
32f59844 AM |
5186 | } |
5187 | } | |
5188 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5189 | { | |
5190 | if (this->resizing_) | |
5191 | { | |
5192 | p.first->second.iter_ = 1; | |
5193 | p.first->second.off_ = this->plt_size_; | |
5194 | } | |
5195 | this->plt_size_ += this->plt_call_size(p.first); | |
34e0882b | 5196 | if (this->targ_->is_tls_get_addr_opt(gsym)) |
220f9906 | 5197 | this->targ_->set_has_tls_get_addr_opt(); |
34e0882b | 5198 | this->plt_size_ = this->plt_call_align(this->plt_size_); |
7ee7ff70 | 5199 | } |
32f59844 | 5200 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
cf43a2fe AM |
5201 | } |
5202 | ||
e5d5f5ed | 5203 | template<int size, bool big_endian> |
a3e60ddb | 5204 | bool |
ec661b9d | 5205 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5206 | Address from, |
c9824451 | 5207 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5208 | unsigned int locsym_index, |
ec661b9d | 5209 | unsigned int r_type, |
7e57d19e AM |
5210 | Address addend, |
5211 | bool tocsave) | |
e5d5f5ed | 5212 | { |
bdab445c AM |
5213 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5214 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5215 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5216 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5217 | if (size == 64) |
7ee7ff70 | 5218 | { |
32f59844 | 5219 | if (p.second |
7ee7ff70 AM |
5220 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) |
5221 | { | |
5222 | p.first->second.localentry0_ = 1; | |
5223 | this->targ_->set_has_localentry0(); | |
5224 | } | |
32f59844 AM |
5225 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5226 | { | |
e4dff765 | 5227 | if (!p.second && !p.first->second.notoc_ |
afd2ea23 AM |
5228 | && (!this->targ_->power10_stubs() |
5229 | || this->targ_->power10_stubs_auto())) | |
32f59844 AM |
5230 | this->need_resize_ = true; |
5231 | p.first->second.notoc_ = 1; | |
5232 | } | |
afd2ea23 | 5233 | else |
32f59844 | 5234 | { |
afd2ea23 | 5235 | if (!p.second && !p.first->second.toc_) |
32f59844 | 5236 | this->need_resize_ = true; |
afd2ea23 AM |
5237 | p.first->second.toc_ = 1; |
5238 | if (!tocsave && !p.first->second.localentry0_) | |
5239 | { | |
5240 | if (!p.second && !p.first->second.r2save_) | |
5241 | this->need_resize_ = true; | |
5242 | p.first->second.r2save_ = 1; | |
5243 | } | |
32f59844 | 5244 | } |
7ee7ff70 | 5245 | } |
32f59844 AM |
5246 | if (p.second || (this->resizing_ && !p.first->second.iter_)) |
5247 | { | |
5248 | if (this->resizing_) | |
5249 | { | |
5250 | p.first->second.iter_ = 1; | |
5251 | p.first->second.off_ = this->plt_size_; | |
5252 | } | |
5253 | this->plt_size_ += this->plt_call_size(p.first); | |
5254 | this->plt_size_ = this->plt_call_align(this->plt_size_); | |
5255 | } | |
5256 | return this->can_reach_stub(from, p.first->second.off_, r_type); | |
e5d5f5ed AM |
5257 | } |
5258 | ||
ec661b9d AM |
5259 | // Find a plt call stub. |
5260 | ||
cf43a2fe | 5261 | template<int size, bool big_endian> |
7e57d19e | 5262 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5263 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5264 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5265 | const Symbol* gsym, |
ec661b9d AM |
5266 | unsigned int r_type, |
5267 | Address addend) const | |
c9824451 | 5268 | { |
bdab445c AM |
5269 | Plt_stub_key key(object, gsym, r_type, addend); |
5270 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5271 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5272 | return NULL; |
5273 | return &p->second; | |
c9824451 AM |
5274 | } |
5275 | ||
5276 | template<int size, bool big_endian> | |
7e57d19e | 5277 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5278 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 5279 | { |
bdab445c AM |
5280 | Plt_stub_key key(gsym); |
5281 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5282 | if (p == this->plt_call_stubs_.end()) |
5283 | return NULL; | |
5284 | return &p->second; | |
cf43a2fe AM |
5285 | } |
5286 | ||
e5d5f5ed | 5287 | template<int size, bool big_endian> |
7e57d19e | 5288 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5289 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5290 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5291 | unsigned int locsym_index, |
ec661b9d AM |
5292 | unsigned int r_type, |
5293 | Address addend) const | |
e5d5f5ed | 5294 | { |
bdab445c AM |
5295 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5296 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5297 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5298 | return NULL; |
5299 | return &p->second; | |
c9824451 AM |
5300 | } |
5301 | ||
5302 | template<int size, bool big_endian> | |
7e57d19e | 5303 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5304 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
5305 | const Sized_relobj_file<size, big_endian>* object, |
5306 | unsigned int locsym_index) const | |
5307 | { | |
bdab445c AM |
5308 | Plt_stub_key key(object, locsym_index); |
5309 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5310 | if (p == this->plt_call_stubs_.end()) |
5311 | return NULL; | |
5312 | return &p->second; | |
ec661b9d AM |
5313 | } |
5314 | ||
5315 | // Add a long branch stub if we don't already have one to given | |
5316 | // destination. | |
5317 | ||
5318 | template<int size, bool big_endian> | |
a3e60ddb | 5319 | bool |
ec661b9d AM |
5320 | Stub_table<size, big_endian>::add_long_branch_entry( |
5321 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
5322 | unsigned int r_type, |
5323 | Address from, | |
d49044c7 | 5324 | Address to, |
fa40fbe4 | 5325 | unsigned int other, |
d49044c7 | 5326 | bool save_res) |
ec661b9d | 5327 | { |
32f59844 AM |
5328 | Branch_stub_key key(object, to); |
5329 | bool notoc = (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC); | |
5330 | Branch_stub_ent ent(this->branch_size_, notoc, save_res); | |
590b87ff | 5331 | std::pair<typename Branch_stub_entries::iterator, bool> p |
32f59844 | 5332 | = this->long_branch_stubs_.insert(std::make_pair(key, ent)); |
afd2ea23 | 5333 | if (notoc) |
ec661b9d | 5334 | { |
afd2ea23 AM |
5335 | if (!p.second && !p.first->second.notoc_) |
5336 | this->need_resize_ = true; | |
32f59844 AM |
5337 | p.first->second.notoc_ = true; |
5338 | } | |
afd2ea23 AM |
5339 | else |
5340 | { | |
5341 | if (!p.second && !p.first->second.toc_) | |
5342 | this->need_resize_ = true; | |
5343 | p.first->second.toc_ = true; | |
5344 | } | |
e3b53295 | 5345 | if (size == 64 && p.first->second.other_ == 0) |
fa40fbe4 | 5346 | p.first->second.other_ = other; |
32f59844 AM |
5347 | gold_assert(save_res == p.first->second.save_res_); |
5348 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5349 | { | |
5350 | if (this->resizing_) | |
5351 | { | |
5352 | p.first->second.iter_ = 1; | |
5353 | p.first->second.off_ = this->branch_size_; | |
5354 | } | |
d49044c7 AM |
5355 | if (save_res) |
5356 | this->need_save_res_ = true; | |
5357 | else | |
5358 | { | |
32f59844 AM |
5359 | bool need_lt = false; |
5360 | unsigned int stub_size = this->branch_stub_size(p.first, &need_lt); | |
5361 | this->branch_size_ += stub_size; | |
5362 | if (size == 64 && need_lt) | |
d49044c7 AM |
5363 | this->targ_->add_branch_lookup_table(to); |
5364 | } | |
ec661b9d | 5365 | } |
32f59844 | 5366 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
ec661b9d AM |
5367 | } |
5368 | ||
d49044c7 | 5369 | // Find long branch stub offset. |
ec661b9d AM |
5370 | |
5371 | template<int size, bool big_endian> | |
32f59844 | 5372 | const typename Stub_table<size, big_endian>::Branch_stub_ent* |
ec661b9d AM |
5373 | Stub_table<size, big_endian>::find_long_branch_entry( |
5374 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 5375 | Address to) const |
ec661b9d | 5376 | { |
32f59844 | 5377 | Branch_stub_key key(object, to); |
ec661b9d | 5378 | typename Branch_stub_entries::const_iterator p |
32f59844 | 5379 | = this->long_branch_stubs_.find(key); |
d49044c7 | 5380 | if (p == this->long_branch_stubs_.end()) |
32f59844 AM |
5381 | return NULL; |
5382 | return &p->second; | |
e5d5f5ed AM |
5383 | } |
5384 | ||
220f9906 AM |
5385 | template<bool big_endian> |
5386 | static void | |
5387 | eh_advance (std::vector<unsigned char>& fde, unsigned int delta) | |
34e0882b | 5388 | { |
220f9906 AM |
5389 | delta /= 4; |
5390 | if (delta < 64) | |
5391 | fde.push_back(elfcpp::DW_CFA_advance_loc + delta); | |
5392 | else if (delta < 256) | |
34e0882b | 5393 | { |
220f9906 AM |
5394 | fde.push_back(elfcpp::DW_CFA_advance_loc1); |
5395 | fde.push_back(delta); | |
5396 | } | |
5397 | else if (delta < 65536) | |
5398 | { | |
5399 | fde.resize(fde.size() + 3); | |
5400 | unsigned char *p = &*fde.end() - 3; | |
5401 | *p++ = elfcpp::DW_CFA_advance_loc2; | |
5402 | elfcpp::Swap<16, big_endian>::writeval(p, delta); | |
5403 | } | |
5404 | else | |
5405 | { | |
5406 | fde.resize(fde.size() + 5); | |
5407 | unsigned char *p = &*fde.end() - 5; | |
5408 | *p++ = elfcpp::DW_CFA_advance_loc4; | |
5409 | elfcpp::Swap<32, big_endian>::writeval(p, delta); | |
34e0882b | 5410 | } |
220f9906 AM |
5411 | } |
5412 | ||
5413 | template<typename T> | |
5414 | static bool | |
5415 | stub_sort(T s1, T s2) | |
5416 | { | |
5417 | return s1->second.off_ < s2->second.off_; | |
34e0882b AM |
5418 | } |
5419 | ||
5420 | // Add .eh_frame info for this stub section. Unlike other linker | |
5421 | // generated .eh_frame this is added late in the link, because we | |
5422 | // only want the .eh_frame info if this particular stub section is | |
5423 | // non-empty. | |
5424 | ||
5425 | template<int size, bool big_endian> | |
5426 | void | |
5427 | Stub_table<size, big_endian>::add_eh_frame(Layout* layout) | |
5428 | { | |
220f9906 AM |
5429 | if (size != 64 |
5430 | || !parameters->options().ld_generated_unwind_info()) | |
34e0882b AM |
5431 | return; |
5432 | ||
5433 | // Since we add stub .eh_frame info late, it must be placed | |
5434 | // after all other linker generated .eh_frame info so that | |
5435 | // merge mapping need not be updated for input sections. | |
5436 | // There is no provision to use a different CIE to that used | |
5437 | // by .glink. | |
5438 | if (!this->targ_->has_glink()) | |
5439 | return; | |
5440 | ||
afd2ea23 | 5441 | typedef typename Plt_stub_entries::iterator plt_iter; |
220f9906 AM |
5442 | std::vector<plt_iter> calls; |
5443 | if (!this->plt_call_stubs_.empty()) | |
5444 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5445 | cs != this->plt_call_stubs_.end(); | |
5446 | ++cs) | |
5447 | if ((this->targ_->is_tls_get_addr_opt(cs->first.sym_) | |
5448 | && cs->second.r2save_ | |
5449 | && !cs->second.localentry0_) | |
e4dff765 | 5450 | || (cs->second.notoc_ |
7c1f4227 | 5451 | && !this->targ_->power10_stubs())) |
220f9906 AM |
5452 | calls.push_back(cs); |
5453 | if (calls.size() > 1) | |
5454 | std::stable_sort(calls.begin(), calls.end(), | |
5455 | stub_sort<plt_iter>); | |
5456 | ||
5457 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5458 | std::vector<branch_iter> branches; | |
e4dff765 | 5459 | if (!this->long_branch_stubs_.empty() |
7c1f4227 | 5460 | && !this->targ_->power10_stubs()) |
220f9906 AM |
5461 | for (branch_iter bs = this->long_branch_stubs_.begin(); |
5462 | bs != this->long_branch_stubs_.end(); | |
5463 | ++bs) | |
5464 | if (bs->second.notoc_) | |
5465 | branches.push_back(bs); | |
5466 | if (branches.size() > 1) | |
5467 | std::stable_sort(branches.begin(), branches.end(), | |
5468 | stub_sort<branch_iter>); | |
5469 | ||
5470 | if (calls.empty() && branches.empty()) | |
34e0882b AM |
5471 | return; |
5472 | ||
220f9906 AM |
5473 | unsigned int last_eh_loc = 0; |
5474 | // offset pcrel sdata4, size udata4, and augmentation size byte. | |
5475 | std::vector<unsigned char> fde(9, 0); | |
5476 | ||
5477 | for (unsigned int i = 0; i < calls.size(); i++) | |
5478 | { | |
5479 | plt_iter cs = calls[i]; | |
5480 | unsigned int off = cs->second.off_; | |
5481 | // The __tls_get_addr_opt call stub needs to describe where | |
5482 | // it saves LR, to support exceptions that might be thrown | |
5483 | // from __tls_get_addr, and to support asynchronous exceptions. | |
5484 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
5485 | { | |
5486 | off += 7 * 4; | |
5487 | if (cs->second.r2save_ | |
5488 | && !cs->second.localentry0_) | |
5489 | { | |
5490 | off += 2 * 4; | |
5491 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5492 | fde.resize(fde.size() + 6); | |
5493 | unsigned char* p = &*fde.end() - 6; | |
5494 | *p++ = elfcpp::DW_CFA_offset_extended_sf; | |
5495 | *p++ = 65; | |
5496 | *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; | |
5497 | unsigned int delta = this->plt_call_size(cs) - 4 - 9 * 4; | |
5498 | *p++ = elfcpp::DW_CFA_advance_loc + delta / 4; | |
5499 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5500 | *p++ = 65; | |
5501 | last_eh_loc = off + delta; | |
5502 | continue; | |
5503 | } | |
5504 | } | |
5505 | // notoc stubs also should describe LR changes, to support | |
5506 | // asynchronous exceptions. | |
5507 | off += (cs->second.r2save_ ? 4 : 0) + 8; | |
5508 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5509 | fde.resize(fde.size() + 6); | |
5510 | unsigned char* p = &*fde.end() - 6; | |
5511 | *p++ = elfcpp::DW_CFA_register; | |
5512 | *p++ = 65; | |
5513 | *p++ = 12; | |
5514 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5515 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5516 | *p++ = 65; | |
5517 | last_eh_loc = off + 8; | |
5518 | } | |
5519 | ||
5520 | for (unsigned int i = 0; i < branches.size(); i++) | |
5521 | { | |
5522 | branch_iter bs = branches[i]; | |
5523 | unsigned int off = bs->second.off_ + 8; | |
5524 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5525 | fde.resize(fde.size() + 6); | |
5526 | unsigned char* p = &*fde.end() - 6; | |
5527 | *p++ = elfcpp::DW_CFA_register; | |
5528 | *p++ = 65; | |
5529 | *p++ = 12; | |
5530 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5531 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5532 | *p++ = 65; | |
5533 | last_eh_loc = off + 8; | |
5534 | } | |
5535 | ||
34e0882b AM |
5536 | layout->add_eh_frame_for_plt(this, |
5537 | Eh_cie<size>::eh_frame_cie, | |
5538 | sizeof (Eh_cie<size>::eh_frame_cie), | |
220f9906 | 5539 | &*fde.begin(), fde.size()); |
34e0882b AM |
5540 | } |
5541 | ||
5542 | template<int size, bool big_endian> | |
5543 | void | |
5544 | Stub_table<size, big_endian>::remove_eh_frame(Layout* layout) | |
5545 | { | |
220f9906 AM |
5546 | if (size == 64 |
5547 | && parameters->options().ld_generated_unwind_info() | |
5548 | && this->targ_->has_glink()) | |
5549 | layout->remove_eh_frame_for_plt(this, | |
5550 | Eh_cie<size>::eh_frame_cie, | |
5551 | sizeof (Eh_cie<size>::eh_frame_cie)); | |
34e0882b AM |
5552 | } |
5553 | ||
ec661b9d AM |
5554 | // A class to handle .glink. |
5555 | ||
5556 | template<int size, bool big_endian> | |
5557 | class Output_data_glink : public Output_section_data | |
5558 | { | |
5559 | public: | |
9055360d AM |
5560 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
5561 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
5562 | |
5563 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
5564 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
5565 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
5566 | { } |
5567 | ||
9d5781f8 | 5568 | void |
9055360d | 5569 | add_eh_frame(Layout* layout); |
9d5781f8 | 5570 | |
9055360d AM |
5571 | void |
5572 | add_global_entry(const Symbol*); | |
5573 | ||
5574 | Address | |
5575 | find_global_entry(const Symbol*) const; | |
5576 | ||
9e390558 AM |
5577 | unsigned int |
5578 | global_entry_align(unsigned int off) const | |
5579 | { | |
691d2e9a | 5580 | unsigned int align = param_plt_align<size>(); |
9e390558 AM |
5581 | return (off + align - 1) & -align; |
5582 | } | |
5583 | ||
5584 | unsigned int | |
5585 | global_entry_off() const | |
5586 | { | |
5587 | return this->global_entry_align(this->end_branch_table_); | |
5588 | } | |
5589 | ||
9055360d AM |
5590 | Address |
5591 | global_entry_address() const | |
5592 | { | |
5593 | gold_assert(this->is_data_size_valid()); | |
9e390558 AM |
5594 | return this->address() + this->global_entry_off(); |
5595 | } | |
5596 | ||
5597 | int | |
5598 | pltresolve_size() const | |
5599 | { | |
5600 | if (size == 64) | |
5601 | return (8 | |
63e5eea2 AM |
5602 | + (this->targ_->abiversion() < 2 ? 11 * 4 |
5603 | : this->targ_->has_localentry0() ? 14 * 4 : 13 * 4)); | |
9e390558 | 5604 | return 16 * 4; |
9d5781f8 AM |
5605 | } |
5606 | ||
ec661b9d AM |
5607 | protected: |
5608 | // Write to a map file. | |
5609 | void | |
5610 | do_print_to_mapfile(Mapfile* mapfile) const | |
5611 | { mapfile->print_output_data(this, _("** glink")); } | |
5612 | ||
5613 | private: | |
5614 | void | |
5615 | set_final_data_size(); | |
5616 | ||
5617 | // Write out .glink | |
5618 | void | |
5619 | do_write(Output_file*); | |
5620 | ||
5621 | // Allows access to .got and .plt for do_write. | |
5622 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
5623 | |
5624 | // Map sym to stub offset. | |
5625 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
5626 | Global_entry_stub_entries global_entry_stubs_; | |
5627 | ||
5628 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
5629 | }; |
5630 | ||
9055360d AM |
5631 | template<int size, bool big_endian> |
5632 | void | |
5633 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
5634 | { | |
5635 | if (!parameters->options().ld_generated_unwind_info()) | |
5636 | return; | |
5637 | ||
5638 | if (size == 64) | |
5639 | { | |
5640 | if (this->targ_->abiversion() < 2) | |
5641 | layout->add_eh_frame_for_plt(this, | |
5642 | Eh_cie<64>::eh_frame_cie, | |
5643 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5644 | glink_eh_frame_fde_64v1, | |
5645 | sizeof (glink_eh_frame_fde_64v1)); | |
63e5eea2 AM |
5646 | else if (this->targ_->has_localentry0()) |
5647 | layout->add_eh_frame_for_plt(this, | |
5648 | Eh_cie<64>::eh_frame_cie, | |
5649 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5650 | glink_eh_frame_fde_64v2_localentry0, | |
5651 | sizeof (glink_eh_frame_fde_64v2)); | |
9055360d AM |
5652 | else |
5653 | layout->add_eh_frame_for_plt(this, | |
5654 | Eh_cie<64>::eh_frame_cie, | |
5655 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5656 | glink_eh_frame_fde_64v2, | |
5657 | sizeof (glink_eh_frame_fde_64v2)); | |
5658 | } | |
5659 | else | |
5660 | { | |
5661 | // 32-bit .glink can use the default since the CIE return | |
5662 | // address reg, LR, is valid. | |
5663 | layout->add_eh_frame_for_plt(this, | |
5664 | Eh_cie<32>::eh_frame_cie, | |
5665 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5666 | default_fde, | |
5667 | sizeof (default_fde)); | |
5668 | // Except where LR is used in a PIC __glink_PLTresolve. | |
5669 | if (parameters->options().output_is_position_independent()) | |
5670 | layout->add_eh_frame_for_plt(this, | |
5671 | Eh_cie<32>::eh_frame_cie, | |
5672 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5673 | glink_eh_frame_fde_32, | |
5674 | sizeof (glink_eh_frame_fde_32)); | |
5675 | } | |
5676 | } | |
5677 | ||
5678 | template<int size, bool big_endian> | |
5679 | void | |
5680 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
5681 | { | |
9e390558 | 5682 | unsigned int off = this->global_entry_align(this->ge_size_); |
9055360d | 5683 | std::pair<typename Global_entry_stub_entries::iterator, bool> p |
9e390558 | 5684 | = this->global_entry_stubs_.insert(std::make_pair(gsym, off)); |
9055360d | 5685 | if (p.second) |
407aa07c | 5686 | this->ge_size_ = off + 16; |
9055360d AM |
5687 | } |
5688 | ||
5689 | template<int size, bool big_endian> | |
5690 | typename Output_data_glink<size, big_endian>::Address | |
5691 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
5692 | { | |
5693 | typename Global_entry_stub_entries::const_iterator p | |
5694 | = this->global_entry_stubs_.find(gsym); | |
5695 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
5696 | } | |
5697 | ||
cf43a2fe AM |
5698 | template<int size, bool big_endian> |
5699 | void | |
5700 | Output_data_glink<size, big_endian>::set_final_data_size() | |
5701 | { | |
ec661b9d AM |
5702 | unsigned int count = this->targ_->plt_entry_count(); |
5703 | section_size_type total = 0; | |
cf43a2fe AM |
5704 | |
5705 | if (count != 0) | |
5706 | { | |
5707 | if (size == 32) | |
5708 | { | |
cf43a2fe AM |
5709 | // space for branch table |
5710 | total += 4 * (count - 1); | |
5711 | ||
5712 | total += -total & 15; | |
9e390558 | 5713 | total += this->pltresolve_size(); |
cf43a2fe AM |
5714 | } |
5715 | else | |
5716 | { | |
9e390558 | 5717 | total += this->pltresolve_size(); |
cf43a2fe AM |
5718 | |
5719 | // space for branch table | |
b4f7960d AM |
5720 | total += 4 * count; |
5721 | if (this->targ_->abiversion() < 2) | |
5722 | { | |
5723 | total += 4 * count; | |
5724 | if (count > 0x8000) | |
5725 | total += 4 * (count - 0x8000); | |
5726 | } | |
cf43a2fe AM |
5727 | } |
5728 | } | |
9055360d | 5729 | this->end_branch_table_ = total; |
9e390558 | 5730 | total = this->global_entry_align(total); |
9055360d | 5731 | total += this->ge_size_; |
cf43a2fe AM |
5732 | |
5733 | this->set_data_size(total); | |
5734 | } | |
5735 | ||
590b87ff AM |
5736 | // Define symbols on stubs, identifying the stub. |
5737 | ||
5738 | template<int size, bool big_endian> | |
5739 | void | |
5740 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
5741 | { | |
5742 | if (!this->plt_call_stubs_.empty()) | |
5743 | { | |
5744 | // The key for the plt call stub hash table includes addresses, | |
5745 | // therefore traversal order depends on those addresses, which | |
5746 | // can change between runs if gold is a PIE. Unfortunately the | |
5747 | // output .symtab ordering depends on the order in which symbols | |
5748 | // are added to the linker symtab. We want reproducible output | |
5749 | // so must sort the call stub symbols. | |
afd2ea23 | 5750 | typedef typename Plt_stub_entries::iterator plt_iter; |
590b87ff AM |
5751 | std::vector<plt_iter> sorted; |
5752 | sorted.resize(this->plt_call_stubs_.size()); | |
5753 | ||
5754 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5755 | cs != this->plt_call_stubs_.end(); | |
5756 | ++cs) | |
bdab445c | 5757 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
5758 | |
5759 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
5760 | { | |
5761 | plt_iter cs = sorted[i]; | |
5762 | char add[10]; | |
5763 | add[0] = 0; | |
5764 | if (cs->first.addend_ != 0) | |
5765 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
5766 | char obj[10]; |
5767 | obj[0] = 0; | |
5768 | if (cs->first.object_) | |
590b87ff AM |
5769 | { |
5770 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5771 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
5772 | sprintf(obj, "%x:", ppcobj->uniq()); |
5773 | } | |
5774 | char localname[9]; | |
5775 | const char *symname; | |
5776 | if (cs->first.sym_ == NULL) | |
5777 | { | |
5778 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
5779 | symname = localname; |
5780 | } | |
34e0882b AM |
5781 | else if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
5782 | symname = this->targ_->tls_get_addr_opt()->name(); | |
590b87ff AM |
5783 | else |
5784 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
5785 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
5786 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
5787 | Address value |
5788 | = this->stub_address() - this->address() + cs->second.off_; | |
34e0882b | 5789 | unsigned int stub_size = this->plt_call_align(this->plt_call_size(cs)); |
590b87ff AM |
5790 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5791 | } | |
5792 | } | |
5793 | ||
afd2ea23 | 5794 | typedef typename Branch_stub_entries::iterator branch_iter; |
590b87ff AM |
5795 | for (branch_iter bs = this->long_branch_stubs_.begin(); |
5796 | bs != this->long_branch_stubs_.end(); | |
5797 | ++bs) | |
5798 | { | |
32f59844 | 5799 | if (bs->second.save_res_) |
590b87ff AM |
5800 | continue; |
5801 | ||
5802 | char* name = new char[8 + 13 + 16 + 1]; | |
5803 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
5804 | static_cast<unsigned long long>(bs->first.dest_)); | |
5805 | Address value = (this->stub_address() - this->address() | |
32f59844 AM |
5806 | + this->plt_size_ + bs->second.off_); |
5807 | bool need_lt = false; | |
5808 | unsigned int stub_size = this->branch_stub_size(bs, &need_lt); | |
590b87ff AM |
5809 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5810 | } | |
5811 | } | |
5812 | ||
32f59844 AM |
5813 | // Emit the start of a __tls_get_addr_opt plt call stub. |
5814 | ||
5815 | template<int size, bool big_endian> | |
afd2ea23 AM |
5816 | void |
5817 | Stub_table<size, big_endian>::build_tls_opt_head(unsigned char** pp, | |
5818 | bool save_lr) | |
32f59844 | 5819 | { |
afd2ea23 AM |
5820 | unsigned char* p = *pp; |
5821 | if (size == 64) | |
32f59844 | 5822 | { |
afd2ea23 AM |
5823 | write_insn<big_endian>(p, ld_11_3 + 0); |
5824 | p += 4; | |
5825 | write_insn<big_endian>(p, ld_12_3 + 8); | |
5826 | p += 4; | |
5827 | write_insn<big_endian>(p, mr_0_3); | |
5828 | p += 4; | |
5829 | write_insn<big_endian>(p, cmpdi_11_0); | |
5830 | p += 4; | |
5831 | write_insn<big_endian>(p, add_3_12_13); | |
5832 | p += 4; | |
5833 | write_insn<big_endian>(p, beqlr); | |
5834 | p += 4; | |
5835 | write_insn<big_endian>(p, mr_3_0); | |
5836 | p += 4; | |
5837 | if (save_lr) | |
32f59844 | 5838 | { |
afd2ea23 | 5839 | write_insn<big_endian>(p, mflr_11); |
32f59844 | 5840 | p += 4; |
afd2ea23 | 5841 | write_insn<big_endian>(p, (std_11_1 + this->targ_->stk_linker())); |
32f59844 AM |
5842 | p += 4; |
5843 | } | |
32f59844 | 5844 | } |
afd2ea23 | 5845 | else |
32f59844 | 5846 | { |
afd2ea23 | 5847 | write_insn<big_endian>(p, lwz_11_3 + 0); |
32f59844 | 5848 | p += 4; |
afd2ea23 | 5849 | write_insn<big_endian>(p, lwz_12_3 + 4); |
32f59844 | 5850 | p += 4; |
afd2ea23 | 5851 | write_insn<big_endian>(p, mr_0_3); |
32f59844 | 5852 | p += 4; |
afd2ea23 AM |
5853 | write_insn<big_endian>(p, cmpwi_11_0); |
5854 | p += 4; | |
5855 | write_insn<big_endian>(p, add_3_12_2); | |
5856 | p += 4; | |
5857 | write_insn<big_endian>(p, beqlr); | |
5858 | p += 4; | |
5859 | write_insn<big_endian>(p, mr_3_0); | |
5860 | p += 4; | |
5861 | write_insn<big_endian>(p, nop); | |
32f59844 | 5862 | p += 4; |
32f59844 | 5863 | } |
afd2ea23 AM |
5864 | *pp = p; |
5865 | } | |
5866 | ||
5867 | // Emit the tail of a __tls_get_addr_opt plt call stub. | |
5868 | ||
5869 | template<int size, bool big_endian> | |
5870 | void | |
5871 | Stub_table<size, big_endian>::build_tls_opt_tail(unsigned char* p) | |
5872 | { | |
5873 | write_insn<big_endian>(p, bctrl); | |
5874 | p += 4; | |
5875 | write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); | |
5876 | p += 4; | |
5877 | write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); | |
5878 | p += 4; | |
5879 | write_insn<big_endian>(p, mtlr_11); | |
5880 | p += 4; | |
5881 | write_insn<big_endian>(p, blr); | |
32f59844 AM |
5882 | } |
5883 | ||
e4dff765 AM |
5884 | // Emit pc-relative plt call stub code. |
5885 | ||
5886 | template<bool big_endian> | |
5887 | static unsigned char* | |
7c1f4227 | 5888 | build_power10_offset(unsigned char* p, uint64_t off, uint64_t odd, bool load) |
e4dff765 AM |
5889 | { |
5890 | uint64_t insn; | |
5891 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
5892 | { | |
5893 | off -= odd; | |
5894 | if (odd) | |
5895 | { | |
5896 | write_insn<big_endian>(p, nop); | |
5897 | p += 4; | |
5898 | } | |
5899 | if (load) | |
5900 | insn = pld_12_pc; | |
5901 | else | |
5902 | insn = paddi_12_pc; | |
5903 | insn |= d34(off); | |
5904 | write_insn<big_endian>(p, insn >> 32); | |
5905 | p += 4; | |
5906 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5907 | } | |
5908 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
5909 | { | |
5910 | off -= 8 - odd; | |
5911 | write_insn<big_endian>(p, li_11_0 | (ha34(off) & 0xffff)); | |
5912 | p += 4; | |
5913 | if (!odd) | |
5914 | { | |
5915 | write_insn<big_endian>(p, sldi_11_11_34); | |
5916 | p += 4; | |
5917 | } | |
5918 | insn = paddi_12_pc | d34(off); | |
5919 | write_insn<big_endian>(p, insn >> 32); | |
5920 | p += 4; | |
5921 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5922 | p += 4; | |
5923 | if (odd) | |
5924 | { | |
5925 | write_insn<big_endian>(p, sldi_11_11_34); | |
5926 | p += 4; | |
5927 | } | |
5928 | if (load) | |
5929 | write_insn<big_endian>(p, ldx_12_11_12); | |
5930 | else | |
5931 | write_insn<big_endian>(p, add_12_11_12); | |
5932 | } | |
5933 | else | |
5934 | { | |
5935 | off -= odd + 8; | |
5936 | write_insn<big_endian>(p, lis_11 | ((ha34(off) >> 16) & 0x3fff)); | |
5937 | p += 4; | |
5938 | write_insn<big_endian>(p, ori_11_11_0 | (ha34(off) & 0xffff)); | |
5939 | p += 4; | |
5940 | if (odd) | |
5941 | { | |
5942 | write_insn<big_endian>(p, sldi_11_11_34); | |
5943 | p += 4; | |
5944 | } | |
5945 | insn = paddi_12_pc | d34(off); | |
5946 | write_insn<big_endian>(p, insn >> 32); | |
5947 | p += 4; | |
5948 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5949 | p += 4; | |
5950 | if (!odd) | |
5951 | { | |
5952 | write_insn<big_endian>(p, sldi_11_11_34); | |
5953 | p += 4; | |
5954 | } | |
5955 | if (load) | |
5956 | write_insn<big_endian>(p, ldx_12_11_12); | |
5957 | else | |
5958 | write_insn<big_endian>(p, add_12_11_12); | |
5959 | } | |
5960 | p += 4; | |
5961 | return p; | |
5962 | } | |
5963 | ||
32f59844 AM |
5964 | // Gets the address of a label (1:) in r11 and builds an offset in r12, |
5965 | // then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
5966 | // mflr %r12 | |
5967 | // bcl 20,31,1f | |
5968 | // 1: mflr %r11 | |
5969 | // mtlr %r12 | |
5970 | // lis %r12,xxx-1b@highest | |
5971 | // ori %r12,%r12,xxx-1b@higher | |
5972 | // sldi %r12,%r12,32 | |
5973 | // oris %r12,%r12,xxx-1b@high | |
5974 | // ori %r12,%r12,xxx-1b@l | |
5975 | // add/ldx %r12,%r11,%r12 | |
5976 | ||
5977 | template<bool big_endian> | |
5978 | static unsigned char* | |
5979 | build_notoc_offset(unsigned char* p, uint64_t off, bool load) | |
5980 | { | |
5981 | write_insn<big_endian>(p, mflr_12); | |
5982 | p += 4; | |
5983 | write_insn<big_endian>(p, bcl_20_31); | |
5984 | p += 4; | |
5985 | write_insn<big_endian>(p, mflr_11); | |
5986 | p += 4; | |
5987 | write_insn<big_endian>(p, mtlr_12); | |
5988 | p += 4; | |
5989 | if (off + 0x8000 < 0x10000) | |
5990 | { | |
5991 | if (load) | |
5992 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
5993 | else | |
5994 | write_insn<big_endian>(p, addi_12_11 + l(off)); | |
5995 | } | |
5996 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
5997 | { | |
5998 | write_insn<big_endian>(p, addis_12_11 + ha(off)); | |
5999 | p += 4; | |
6000 | if (load) | |
6001 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6002 | else | |
6003 | write_insn<big_endian>(p, addi_12_12 + l(off)); | |
6004 | } | |
6005 | else | |
6006 | { | |
6007 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
6008 | { | |
6009 | write_insn<big_endian>(p, li_12_0 + ((off >> 32) & 0xffff)); | |
6010 | p += 4; | |
6011 | } | |
6012 | else | |
6013 | { | |
6014 | write_insn<big_endian>(p, lis_12 + ((off >> 48) & 0xffff)); | |
6015 | p += 4; | |
6016 | if (((off >> 32) & 0xffff) != 0) | |
6017 | { | |
6018 | write_insn<big_endian>(p, ori_12_12_0 + ((off >> 32) & 0xffff)); | |
6019 | p += 4; | |
6020 | } | |
6021 | } | |
6022 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6023 | { | |
6024 | write_insn<big_endian>(p, sldi_12_12_32); | |
6025 | p += 4; | |
6026 | } | |
6027 | if (hi(off) != 0) | |
6028 | { | |
6029 | write_insn<big_endian>(p, oris_12_12_0 + hi(off)); | |
6030 | p += 4; | |
6031 | } | |
6032 | if (l(off) != 0) | |
6033 | { | |
6034 | write_insn<big_endian>(p, ori_12_12_0 + l(off)); | |
6035 | p += 4; | |
6036 | } | |
6037 | if (load) | |
6038 | write_insn<big_endian>(p, ldx_12_11_12); | |
6039 | else | |
6040 | write_insn<big_endian>(p, add_12_11_12); | |
6041 | } | |
6042 | p += 4; | |
6043 | return p; | |
6044 | } | |
6045 | ||
6046 | // Size of a given plt call stub. | |
6047 | ||
6048 | template<int size, bool big_endian> | |
6049 | unsigned int | |
6050 | Stub_table<size, big_endian>::plt_call_size( | |
afd2ea23 | 6051 | typename Plt_stub_entries::iterator p) const |
32f59844 AM |
6052 | { |
6053 | if (size == 32) | |
6054 | { | |
6055 | const Symbol* gsym = p->first.sym_; | |
6056 | return (4 * 4 | |
6057 | + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); | |
6058 | } | |
6059 | ||
6060 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6061 | uint64_t plt_addr = this->plt_off(p, &plt); | |
6062 | plt_addr += plt->address(); | |
afd2ea23 AM |
6063 | if (this->targ_->power10_stubs() |
6064 | && this->targ_->power10_stubs_auto()) | |
32f59844 | 6065 | { |
afd2ea23 AM |
6066 | unsigned int bytes = 0; |
6067 | if (p->second.notoc_) | |
6068 | { | |
6069 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6070 | bytes = 7 * 4; | |
6071 | uint64_t from = this->stub_address() + p->second.off_ + bytes; | |
6072 | uint64_t odd = from & 4; | |
6073 | uint64_t off = plt_addr - from; | |
6074 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6075 | bytes += odd + 4 * 4; | |
6076 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6077 | bytes += 7 * 4; | |
6078 | else | |
6079 | bytes += 8 * 4; | |
6080 | bytes = this->plt_call_align(bytes); | |
6081 | } | |
6082 | unsigned int tail = 0; | |
6083 | if (p->second.toc_) | |
6084 | { | |
6085 | p->second.tocoff_ = bytes; | |
6086 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6087 | { | |
6088 | bytes += 7 * 4; | |
6089 | if (p->second.r2save_ && !p->second.localentry0_) | |
6090 | { | |
6091 | bytes += 2 * 4; | |
6092 | tail = 4 * 4; | |
6093 | } | |
6094 | } | |
6095 | if (p->second.r2save_) | |
6096 | bytes += 4; | |
6097 | uint64_t got_addr | |
6098 | = this->targ_->got_section()->output_section()->address(); | |
6099 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6100 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
6101 | got_addr += ppcobj->toc_base_offset(); | |
6102 | uint64_t off = plt_addr - got_addr; | |
6103 | bytes += 3 * 4 + 4 * (ha(off) != 0); | |
6104 | } | |
6105 | return bytes + tail; | |
32f59844 | 6106 | } |
afd2ea23 AM |
6107 | else |
6108 | { | |
6109 | unsigned int bytes = 0; | |
6110 | unsigned int tail = 0; | |
6111 | if (this->targ_->is_tls_get_addr_opt(p->first.sym_)) | |
6112 | { | |
6113 | bytes = 7 * 4; | |
6114 | if (p->second.r2save_ && !p->second.localentry0_) | |
6115 | { | |
6116 | bytes = 9 * 4; | |
6117 | tail = 4 * 4; | |
6118 | } | |
6119 | } | |
32f59844 | 6120 | |
afd2ea23 AM |
6121 | if (p->second.r2save_) |
6122 | bytes += 4; | |
32f59844 | 6123 | |
afd2ea23 AM |
6124 | if (this->targ_->power10_stubs()) |
6125 | { | |
6126 | uint64_t from = this->stub_address() + p->second.off_ + bytes; | |
6127 | uint64_t odd = from & 4; | |
6128 | uint64_t off = plt_addr - from; | |
6129 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6130 | bytes += odd + 4 * 4; | |
6131 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6132 | bytes += 7 * 4; | |
6133 | else | |
6134 | bytes += 8 * 4; | |
6135 | return bytes + tail; | |
6136 | } | |
e4dff765 | 6137 | |
afd2ea23 | 6138 | if (p->second.notoc_) |
32f59844 | 6139 | { |
afd2ea23 AM |
6140 | uint64_t from = this->stub_address() + p->second.off_ + bytes + 2 * 4; |
6141 | uint64_t off = plt_addr - from; | |
6142 | if (off + 0x8000 < 0x10000) | |
6143 | bytes += 7 * 4; | |
6144 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
6145 | bytes += 8 * 4; | |
6146 | else | |
6147 | { | |
6148 | bytes += 8 * 4; | |
6149 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
6150 | && ((off >> 32) & 0xffff) != 0) | |
6151 | bytes += 4; | |
6152 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6153 | bytes += 4; | |
6154 | if (hi(off) != 0) | |
6155 | bytes += 4; | |
6156 | if (l(off) != 0) | |
6157 | bytes += 4; | |
6158 | } | |
6159 | return bytes + tail; | |
32f59844 | 6160 | } |
32f59844 | 6161 | |
afd2ea23 AM |
6162 | uint64_t got_addr = this->targ_->got_section()->output_section()->address(); |
6163 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6164 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
6165 | got_addr += ppcobj->toc_base_offset(); | |
6166 | uint64_t off = plt_addr - got_addr; | |
6167 | bytes += 3 * 4 + 4 * (ha(off) != 0); | |
6168 | if (this->targ_->abiversion() < 2) | |
6169 | { | |
6170 | bool static_chain = parameters->options().plt_static_chain(); | |
6171 | bool thread_safe = this->targ_->plt_thread_safe(); | |
6172 | bytes += (4 | |
6173 | + 4 * static_chain | |
6174 | + 8 * thread_safe | |
6175 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
6176 | } | |
6177 | return bytes + tail; | |
32f59844 | 6178 | } |
32f59844 AM |
6179 | } |
6180 | ||
6181 | // Return long branch stub size. | |
6182 | ||
6183 | template<int size, bool big_endian> | |
6184 | unsigned int | |
6185 | Stub_table<size, big_endian>::branch_stub_size( | |
afd2ea23 | 6186 | typename Branch_stub_entries::iterator p, |
32f59844 AM |
6187 | bool* need_lt) |
6188 | { | |
6189 | Address loc = this->stub_address() + this->last_plt_size_ + p->second.off_; | |
6190 | if (size == 32) | |
6191 | { | |
6192 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
6193 | return 4; | |
6194 | if (parameters->options().output_is_position_independent()) | |
6195 | return 32; | |
6196 | return 16; | |
6197 | } | |
6198 | ||
6199 | uint64_t off = p->first.dest_ - loc; | |
afd2ea23 | 6200 | unsigned int bytes = 0; |
32f59844 AM |
6201 | if (p->second.notoc_) |
6202 | { | |
7c1f4227 | 6203 | if (this->targ_->power10_stubs()) |
e4dff765 AM |
6204 | { |
6205 | Address odd = loc & 4; | |
6206 | if (off + (1 << 25) < 2 << 25) | |
afd2ea23 AM |
6207 | bytes = odd + 12; |
6208 | else if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6209 | bytes = odd + 16; | |
6210 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6211 | bytes = 28; | |
6212 | else | |
6213 | bytes = 32; | |
6214 | if (!(p->second.toc_ && this->targ_->power10_stubs_auto())) | |
6215 | return bytes; | |
6216 | p->second.tocoff_ = bytes; | |
6217 | } | |
6218 | else | |
6219 | { | |
6220 | off -= 8; | |
6221 | if (off + 0x8000 < 0x10000) | |
6222 | return 24; | |
6223 | if (off + 0x80008000ULL < 0x100000000ULL) | |
6224 | { | |
6225 | if (off + 24 + (1 << 25) < 2 << 25) | |
6226 | return 28; | |
6227 | return 32; | |
6228 | } | |
6229 | ||
6230 | bytes = 32; | |
6231 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
6232 | && ((off >> 32) & 0xffff) != 0) | |
6233 | bytes += 4; | |
6234 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6235 | bytes += 4; | |
6236 | if (hi(off) != 0) | |
6237 | bytes += 4; | |
6238 | if (l(off) != 0) | |
6239 | bytes += 4; | |
6240 | return bytes; | |
6241 | } | |
32f59844 AM |
6242 | } |
6243 | ||
fa40fbe4 | 6244 | off += elfcpp::ppc64_decode_local_entry(p->second.other_); |
32f59844 | 6245 | if (off + (1 << 25) < 2 << 25) |
afd2ea23 AM |
6246 | return bytes + 4; |
6247 | if (!this->targ_->power10_stubs() | |
6248 | || (p->second.toc_ && this->targ_->power10_stubs_auto())) | |
e4dff765 | 6249 | *need_lt = true; |
afd2ea23 | 6250 | return bytes + 16; |
32f59844 AM |
6251 | } |
6252 | ||
f073a3e8 AM |
6253 | template<int size, bool big_endian> |
6254 | void | |
6255 | Stub_table<size, big_endian>::plt_error(const Plt_stub_key& p) | |
6256 | { | |
6257 | if (p.sym_) | |
6258 | gold_error(_("linkage table error against `%s'"), | |
6259 | p.sym_->demangled_name().c_str()); | |
6260 | else | |
6261 | gold_error(_("linkage table error against `%s:[local %u]'"), | |
6262 | p.object_->name().c_str(), | |
6263 | p.locsym_); | |
6264 | } | |
6265 | ||
ec661b9d | 6266 | // Write out plt and long branch stub code. |
cf43a2fe AM |
6267 | |
6268 | template<int size, bool big_endian> | |
6269 | void | |
ec661b9d | 6270 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 6271 | { |
ec661b9d AM |
6272 | if (this->plt_call_stubs_.empty() |
6273 | && this->long_branch_stubs_.empty()) | |
6274 | return; | |
6275 | ||
6276 | const section_size_type start_off = this->offset(); | |
6277 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 6278 | const section_size_type oview_size = |
ec661b9d | 6279 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 6280 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 6281 | unsigned char* p; |
42cacb20 | 6282 | |
e4dff765 | 6283 | if (size == 64 |
7c1f4227 | 6284 | && this->targ_->power10_stubs()) |
e4dff765 | 6285 | { |
afd2ea23 AM |
6286 | const Output_data_got_powerpc<size, big_endian>* got |
6287 | = this->targ_->got_section(); | |
6288 | Address got_os_addr = got->output_section()->address(); | |
6289 | ||
e4dff765 AM |
6290 | if (!this->plt_call_stubs_.empty()) |
6291 | { | |
6292 | // Write out plt call stubs. | |
6293 | typename Plt_stub_entries::const_iterator cs; | |
6294 | for (cs = this->plt_call_stubs_.begin(); | |
6295 | cs != this->plt_call_stubs_.end(); | |
6296 | ++cs) | |
6297 | { | |
6298 | p = oview + cs->second.off_; | |
e4dff765 AM |
6299 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6300 | Address pltoff = this->plt_off(cs, &plt); | |
6301 | Address plt_addr = pltoff + plt->address(); | |
afd2ea23 AM |
6302 | if (this->targ_->power10_stubs_auto()) |
6303 | { | |
6304 | if (cs->second.notoc_) | |
6305 | { | |
6306 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6307 | this->build_tls_opt_head(&p, false); | |
6308 | Address from = this->stub_address() + (p - oview); | |
6309 | Address delta = plt_addr - from; | |
6310 | p = build_power10_offset<big_endian>(p, delta, from & 4, | |
6311 | true); | |
6312 | write_insn<big_endian>(p, mtctr_12); | |
6313 | p += 4; | |
6314 | write_insn<big_endian>(p, bctr); | |
6315 | p += 4; | |
6316 | p = oview + this->plt_call_align(p - oview); | |
6317 | } | |
6318 | if (cs->second.toc_) | |
6319 | { | |
6320 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6321 | { | |
6322 | bool save_lr | |
6323 | = cs->second.r2save_ && !cs->second.localentry0_; | |
6324 | this->build_tls_opt_head(&p, save_lr); | |
6325 | } | |
6326 | const Powerpc_relobj<size, big_endian>* ppcobj | |
6327 | = static_cast<const Powerpc_relobj<size, big_endian>*>( | |
6328 | cs->first.object_); | |
6329 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
6330 | Address off = plt_addr - got_addr; | |
6331 | ||
6332 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) | |
6333 | this->plt_error(cs->first); | |
6334 | ||
6335 | if (cs->second.r2save_) | |
6336 | { | |
6337 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6338 | p += 4; | |
6339 | } | |
6340 | if (ha(off) != 0) | |
6341 | { | |
6342 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
6343 | p += 4; | |
6344 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6345 | p += 4; | |
6346 | } | |
6347 | else | |
6348 | { | |
6349 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
6350 | p += 4; | |
6351 | } | |
6352 | write_insn<big_endian>(p, mtctr_12); | |
6353 | p += 4; | |
6354 | if (cs->second.r2save_ | |
6355 | && !cs->second.localentry0_ | |
6356 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6357 | this->build_tls_opt_tail(p); | |
6358 | else | |
6359 | write_insn<big_endian>(p, bctr); | |
6360 | } | |
6361 | } | |
6362 | else | |
6363 | { | |
6364 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6365 | { | |
6366 | bool save_lr | |
6367 | = cs->second.r2save_ && !cs->second.localentry0_; | |
6368 | this->build_tls_opt_head(&p, save_lr); | |
6369 | } | |
6370 | if (cs->second.r2save_) | |
6371 | { | |
6372 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6373 | p += 4; | |
6374 | } | |
6375 | Address from = this->stub_address() + (p - oview); | |
6376 | Address delta = plt_addr - from; | |
6377 | p = build_power10_offset<big_endian>(p, delta, from & 4, true); | |
6378 | write_insn<big_endian>(p, mtctr_12); | |
6379 | p += 4; | |
6380 | if (cs->second.r2save_ | |
6381 | && !cs->second.localentry0_ | |
6382 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6383 | this->build_tls_opt_tail(p); | |
6384 | else | |
6385 | write_insn<big_endian>(p, bctr); | |
6386 | } | |
e4dff765 AM |
6387 | } |
6388 | } | |
6389 | ||
6390 | // Write out long branch stubs. | |
6391 | typename Branch_stub_entries::const_iterator bs; | |
6392 | for (bs = this->long_branch_stubs_.begin(); | |
6393 | bs != this->long_branch_stubs_.end(); | |
6394 | ++bs) | |
6395 | { | |
6396 | if (bs->second.save_res_) | |
6397 | continue; | |
6398 | Address off = this->plt_size_ + bs->second.off_; | |
6399 | p = oview + off; | |
6400 | Address loc = this->stub_address() + off; | |
6401 | Address delta = bs->first.dest_ - loc; | |
afd2ea23 | 6402 | if (this->targ_->power10_stubs_auto()) |
e4dff765 | 6403 | { |
afd2ea23 AM |
6404 | if (bs->second.notoc_) |
6405 | { | |
6406 | unsigned char* startp = p; | |
6407 | p = build_power10_offset<big_endian>(p, delta, | |
6408 | loc & 4, false); | |
6409 | delta -= p - startp; | |
6410 | startp = p; | |
6411 | if (delta + (1 << 25) < 2 << 25) | |
6412 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6413 | else | |
6414 | { | |
6415 | write_insn<big_endian>(p, mtctr_12); | |
6416 | p += 4; | |
6417 | write_insn<big_endian>(p, bctr); | |
6418 | } | |
6419 | p += 4; | |
6420 | delta -= p - startp; | |
6421 | } | |
6422 | if (bs->second.toc_) | |
6423 | { | |
fa40fbe4 | 6424 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); |
afd2ea23 AM |
6425 | if (delta + (1 << 25) >= 2 << 25) |
6426 | { | |
6427 | Address brlt_addr | |
6428 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
6429 | gold_assert(brlt_addr != invalid_address); | |
6430 | brlt_addr += this->targ_->brlt_section()->address(); | |
6431 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
6432 | Address brltoff = brlt_addr - got_addr; | |
6433 | if (ha(brltoff) == 0) | |
6434 | { | |
6435 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)); | |
6436 | p += 4; | |
6437 | } | |
6438 | else | |
6439 | { | |
6440 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); | |
6441 | p += 4; | |
6442 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)); | |
6443 | p += 4; | |
6444 | } | |
6445 | } | |
6446 | if (delta + (1 << 25) < 2 << 25) | |
6447 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6448 | else | |
6449 | { | |
6450 | write_insn<big_endian>(p, mtctr_12); | |
6451 | p += 4; | |
6452 | write_insn<big_endian>(p, bctr); | |
6453 | } | |
6454 | } | |
e4dff765 | 6455 | } |
e4dff765 AM |
6456 | else |
6457 | { | |
fa40fbe4 AM |
6458 | if (!bs->second.notoc_) |
6459 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); | |
afd2ea23 AM |
6460 | if (bs->second.notoc_ || delta + (1 << 25) >= 2 << 25) |
6461 | { | |
6462 | unsigned char* startp = p; | |
6463 | p = build_power10_offset<big_endian>(p, delta, | |
6464 | loc & 4, false); | |
6465 | delta -= p - startp; | |
6466 | } | |
6467 | if (delta + (1 << 25) < 2 << 25) | |
6468 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6469 | else | |
6470 | { | |
6471 | write_insn<big_endian>(p, mtctr_12); | |
6472 | p += 4; | |
6473 | write_insn<big_endian>(p, bctr); | |
6474 | } | |
e4dff765 AM |
6475 | } |
6476 | } | |
6477 | } | |
6478 | else if (size == 64) | |
cf43a2fe | 6479 | { |
ec661b9d AM |
6480 | const Output_data_got_powerpc<size, big_endian>* got |
6481 | = this->targ_->got_section(); | |
dd93cd0a | 6482 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 6483 | |
32f59844 AM |
6484 | if (!this->plt_call_stubs_.empty() |
6485 | && this->targ_->abiversion() >= 2) | |
cf43a2fe | 6486 | { |
32f59844 AM |
6487 | // Write out plt call stubs for ELFv2. |
6488 | typename Plt_stub_entries::const_iterator cs; | |
6489 | for (cs = this->plt_call_stubs_.begin(); | |
6490 | cs != this->plt_call_stubs_.end(); | |
6491 | ++cs) | |
6492 | { | |
6493 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6494 | Address pltoff = this->plt_off(cs, &plt); | |
6495 | Address plt_addr = pltoff + plt->address(); | |
6496 | ||
6497 | p = oview + cs->second.off_; | |
afd2ea23 AM |
6498 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6499 | { | |
6500 | bool save_lr = cs->second.r2save_ && !cs->second.localentry0_; | |
6501 | this->build_tls_opt_head(&p, save_lr); | |
6502 | } | |
32f59844 AM |
6503 | if (cs->second.r2save_) |
6504 | { | |
6505 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6506 | p += 4; | |
6507 | } | |
6508 | if (cs->second.notoc_) | |
6509 | { | |
6510 | Address from = this->stub_address() + (p - oview) + 8; | |
6511 | Address off = plt_addr - from; | |
6512 | p = build_notoc_offset<big_endian>(p, off, true); | |
6513 | } | |
6514 | else | |
6515 | { | |
6516 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6517 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6518 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
6519 | Address off = plt_addr - got_addr; | |
6520 | ||
6521 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) | |
6522 | this->plt_error(cs->first); | |
6523 | ||
6524 | if (ha(off) != 0) | |
6525 | { | |
6526 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
6527 | p += 4; | |
6528 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6529 | p += 4; | |
6530 | } | |
6531 | else | |
6532 | { | |
6533 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
6534 | p += 4; | |
6535 | } | |
6536 | } | |
6537 | write_insn<big_endian>(p, mtctr_12); | |
6538 | p += 4; | |
afd2ea23 AM |
6539 | if (cs->second.r2save_ |
6540 | && !cs->second.localentry0_ | |
6541 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6542 | this->build_tls_opt_tail(p); | |
6543 | else | |
32f59844 AM |
6544 | write_insn<big_endian>(p, bctr); |
6545 | } | |
6546 | } | |
6547 | else if (!this->plt_call_stubs_.empty()) | |
6548 | { | |
6549 | // Write out plt call stubs for ELFv1. | |
ec661b9d AM |
6550 | typename Plt_stub_entries::const_iterator cs; |
6551 | for (cs = this->plt_call_stubs_.begin(); | |
6552 | cs != this->plt_call_stubs_.end(); | |
6553 | ++cs) | |
e5d5f5ed | 6554 | { |
08be3224 AM |
6555 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6556 | Address pltoff = this->plt_off(cs, &plt); | |
6557 | Address plt_addr = pltoff + plt->address(); | |
ec661b9d AM |
6558 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
6559 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6560 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 6561 | Address off = plt_addr - got_addr; |
ec661b9d | 6562 | |
32f59844 AM |
6563 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0 |
6564 | || cs->second.notoc_) | |
f073a3e8 | 6565 | this->plt_error(cs->first); |
ec661b9d | 6566 | |
32f59844 AM |
6567 | bool static_chain = parameters->options().plt_static_chain(); |
6568 | bool thread_safe = this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
6569 | bool use_fake_dep = false; |
6570 | Address cmp_branch_off = 0; | |
407aa07c | 6571 | if (thread_safe) |
9e69ed50 AM |
6572 | { |
6573 | unsigned int pltindex | |
6574 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
6575 | / this->targ_->plt_entry_size()); | |
6576 | Address glinkoff | |
9e390558 | 6577 | = (this->targ_->glink_section()->pltresolve_size() |
9e69ed50 AM |
6578 | + pltindex * 8); |
6579 | if (pltindex > 32768) | |
6580 | glinkoff += (pltindex - 32768) * 4; | |
6581 | Address to | |
6582 | = this->targ_->glink_section()->address() + glinkoff; | |
6583 | Address from | |
7e57d19e AM |
6584 | = (this->stub_address() + cs->second.off_ + 20 |
6585 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
6586 | + 4 * (ha(off) != 0) |
6587 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
6588 | + 4 * static_chain); | |
6589 | cmp_branch_off = to - from; | |
6590 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
6591 | } | |
6592 | ||
bdab445c | 6593 | p = oview + cs->second.off_; |
afd2ea23 AM |
6594 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6595 | { | |
6596 | bool save_lr = cs->second.r2save_ && !cs->second.localentry0_; | |
6597 | this->build_tls_opt_head(&p, save_lr); | |
6598 | use_fake_dep = thread_safe; | |
6599 | } | |
32f59844 | 6600 | if (cs->second.r2save_) |
34e0882b | 6601 | { |
32f59844 | 6602 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
34e0882b | 6603 | p += 4; |
34e0882b | 6604 | } |
9e69ed50 | 6605 | if (ha(off) != 0) |
ec661b9d | 6606 | { |
32f59844 AM |
6607 | write_insn<big_endian>(p, addis_11_2 + ha(off)); |
6608 | p += 4; | |
6609 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
6610 | p += 4; | |
6611 | if (ha(off + 8 + 8 * static_chain) != ha(off)) | |
397998fc | 6612 | { |
32f59844 | 6613 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
397998fc | 6614 | p += 4; |
32f59844 | 6615 | off = 0; |
397998fc | 6616 | } |
32f59844 AM |
6617 | write_insn<big_endian>(p, mtctr_12); |
6618 | p += 4; | |
6619 | if (use_fake_dep) | |
397998fc | 6620 | { |
32f59844 | 6621 | write_insn<big_endian>(p, xor_2_12_12); |
397998fc | 6622 | p += 4; |
32f59844 | 6623 | write_insn<big_endian>(p, add_11_11_2); |
397998fc AM |
6624 | p += 4; |
6625 | } | |
32f59844 | 6626 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); |
b4f7960d | 6627 | p += 4; |
32f59844 | 6628 | if (static_chain) |
9e69ed50 | 6629 | { |
32f59844 | 6630 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); |
b4f7960d | 6631 | p += 4; |
9e69ed50 | 6632 | } |
ec661b9d AM |
6633 | } |
6634 | else | |
6635 | { | |
b4f7960d AM |
6636 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
6637 | p += 4; | |
32f59844 | 6638 | if (ha(off + 8 + 8 * static_chain) != ha(off)) |
ec661b9d | 6639 | { |
b4f7960d AM |
6640 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
6641 | p += 4; | |
9e69ed50 | 6642 | off = 0; |
ec661b9d | 6643 | } |
b4f7960d AM |
6644 | write_insn<big_endian>(p, mtctr_12); |
6645 | p += 4; | |
32f59844 | 6646 | if (use_fake_dep) |
9e69ed50 | 6647 | { |
32f59844 AM |
6648 | write_insn<big_endian>(p, xor_11_12_12); |
6649 | p += 4; | |
6650 | write_insn<big_endian>(p, add_2_2_11); | |
b4f7960d | 6651 | p += 4; |
9e69ed50 | 6652 | } |
32f59844 AM |
6653 | if (static_chain) |
6654 | { | |
6655 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
6656 | p += 4; | |
6657 | } | |
6658 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
34e0882b | 6659 | p += 4; |
34e0882b | 6660 | } |
afd2ea23 AM |
6661 | if (cs->second.r2save_ |
6662 | && !cs->second.localentry0_ | |
6663 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
6664 | this->build_tls_opt_tail(p); | |
34e0882b | 6665 | else if (thread_safe && !use_fake_dep) |
9e69ed50 | 6666 | { |
b4f7960d AM |
6667 | write_insn<big_endian>(p, cmpldi_2_0); |
6668 | p += 4; | |
6669 | write_insn<big_endian>(p, bnectr_p4); | |
6670 | p += 4; | |
9e69ed50 AM |
6671 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
6672 | } | |
6673 | else | |
407aa07c | 6674 | write_insn<big_endian>(p, bctr); |
e5d5f5ed | 6675 | } |
ec661b9d AM |
6676 | } |
6677 | ||
6678 | // Write out long branch stubs. | |
6679 | typename Branch_stub_entries::const_iterator bs; | |
6680 | for (bs = this->long_branch_stubs_.begin(); | |
6681 | bs != this->long_branch_stubs_.end(); | |
6682 | ++bs) | |
6683 | { | |
32f59844 | 6684 | if (bs->second.save_res_) |
d49044c7 | 6685 | continue; |
32f59844 AM |
6686 | Address off = this->plt_size_ + bs->second.off_; |
6687 | p = oview + off; | |
6688 | Address loc = this->stub_address() + off; | |
ec661b9d | 6689 | Address delta = bs->first.dest_ - loc; |
fa40fbe4 AM |
6690 | if (!bs->second.notoc_) |
6691 | delta += elfcpp::ppc64_decode_local_entry(bs->second.other_); | |
32f59844 AM |
6692 | if (bs->second.notoc_) |
6693 | { | |
6694 | unsigned char* startp = p; | |
6695 | p = build_notoc_offset<big_endian>(p, off, false); | |
6696 | delta -= p - startp; | |
6697 | } | |
6698 | else if (delta + (1 << 25) >= 2 << 25) | |
cf43a2fe | 6699 | { |
ec661b9d AM |
6700 | Address brlt_addr |
6701 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
6702 | gold_assert(brlt_addr != invalid_address); | |
6703 | brlt_addr += this->targ_->brlt_section()->address(); | |
6704 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
6705 | Address brltoff = brlt_addr - got_addr; | |
6706 | if (ha(brltoff) == 0) | |
6707 | { | |
32f59844 AM |
6708 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)); |
6709 | p += 4; | |
ec661b9d AM |
6710 | } |
6711 | else | |
cf43a2fe | 6712 | { |
32f59844 AM |
6713 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); |
6714 | p += 4; | |
6715 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)); | |
6716 | p += 4; | |
cf43a2fe | 6717 | } |
32f59844 AM |
6718 | } |
6719 | if (delta + (1 << 25) < 2 << 25) | |
6720 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6721 | else | |
6722 | { | |
6723 | write_insn<big_endian>(p, mtctr_12); | |
6724 | p += 4; | |
407aa07c | 6725 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6726 | } |
ec661b9d AM |
6727 | } |
6728 | } | |
32f59844 | 6729 | else // size == 32 |
ec661b9d AM |
6730 | { |
6731 | if (!this->plt_call_stubs_.empty()) | |
6732 | { | |
ec661b9d AM |
6733 | // The address of _GLOBAL_OFFSET_TABLE_. |
6734 | Address g_o_t = invalid_address; | |
6735 | ||
6736 | // Write out plt call stubs. | |
6737 | typename Plt_stub_entries::const_iterator cs; | |
6738 | for (cs = this->plt_call_stubs_.begin(); | |
6739 | cs != this->plt_call_stubs_.end(); | |
6740 | ++cs) | |
cf43a2fe | 6741 | { |
08be3224 AM |
6742 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6743 | Address plt_addr = this->plt_off(cs, &plt); | |
6744 | plt_addr += plt->address(); | |
ec661b9d | 6745 | |
bdab445c | 6746 | p = oview + cs->second.off_; |
afd2ea23 AM |
6747 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
6748 | this->build_tls_opt_head(&p, false); | |
ec661b9d AM |
6749 | if (parameters->options().output_is_position_independent()) |
6750 | { | |
6751 | Address got_addr; | |
6752 | const Powerpc_relobj<size, big_endian>* ppcobj | |
6753 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
6754 | (cs->first.object_)); | |
6755 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
6756 | { | |
6757 | unsigned int got2 = ppcobj->got2_shndx(); | |
6758 | got_addr = ppcobj->get_output_section_offset(got2); | |
6759 | gold_assert(got_addr != invalid_address); | |
6760 | got_addr += (ppcobj->output_section(got2)->address() | |
6761 | + cs->first.addend_); | |
6762 | } | |
6763 | else | |
6764 | { | |
6765 | if (g_o_t == invalid_address) | |
6766 | { | |
6767 | const Output_data_got_powerpc<size, big_endian>* got | |
6768 | = this->targ_->got_section(); | |
6769 | g_o_t = got->address() + got->g_o_t(); | |
6770 | } | |
6771 | got_addr = g_o_t; | |
6772 | } | |
6773 | ||
9e69ed50 AM |
6774 | Address off = plt_addr - got_addr; |
6775 | if (ha(off) == 0) | |
9e390558 | 6776 | write_insn<big_endian>(p, lwz_11_30 + l(off)); |
ec661b9d AM |
6777 | else |
6778 | { | |
9e390558 AM |
6779 | write_insn<big_endian>(p, addis_11_30 + ha(off)); |
6780 | p += 4; | |
6781 | write_insn<big_endian>(p, lwz_11_11 + l(off)); | |
ec661b9d AM |
6782 | } |
6783 | } | |
6784 | else | |
6785 | { | |
9e390558 AM |
6786 | write_insn<big_endian>(p, lis_11 + ha(plt_addr)); |
6787 | p += 4; | |
6788 | write_insn<big_endian>(p, lwz_11_11 + l(plt_addr)); | |
ec661b9d | 6789 | } |
9e390558 AM |
6790 | p += 4; |
6791 | write_insn<big_endian>(p, mtctr_11); | |
6792 | p += 4; | |
407aa07c | 6793 | write_insn<big_endian>(p, bctr); |
ec661b9d AM |
6794 | } |
6795 | } | |
6796 | ||
6797 | // Write out long branch stubs. | |
6798 | typename Branch_stub_entries::const_iterator bs; | |
6799 | for (bs = this->long_branch_stubs_.begin(); | |
6800 | bs != this->long_branch_stubs_.end(); | |
6801 | ++bs) | |
6802 | { | |
32f59844 | 6803 | if (bs->second.save_res_) |
d49044c7 | 6804 | continue; |
32f59844 AM |
6805 | Address off = this->plt_size_ + bs->second.off_; |
6806 | p = oview + off; | |
6807 | Address loc = this->stub_address() + off; | |
ec661b9d AM |
6808 | Address delta = bs->first.dest_ - loc; |
6809 | if (delta + (1 << 25) < 2 << 25) | |
6810 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6811 | else if (!parameters->options().output_is_position_independent()) | |
6812 | { | |
9e390558 AM |
6813 | write_insn<big_endian>(p, lis_12 + ha(bs->first.dest_)); |
6814 | p += 4; | |
6815 | write_insn<big_endian>(p, addi_12_12 + l(bs->first.dest_)); | |
ec661b9d AM |
6816 | } |
6817 | else | |
6818 | { | |
6819 | delta -= 8; | |
9e390558 AM |
6820 | write_insn<big_endian>(p, mflr_0); |
6821 | p += 4; | |
6822 | write_insn<big_endian>(p, bcl_20_31); | |
6823 | p += 4; | |
6824 | write_insn<big_endian>(p, mflr_12); | |
6825 | p += 4; | |
6826 | write_insn<big_endian>(p, addis_12_12 + ha(delta)); | |
6827 | p += 4; | |
6828 | write_insn<big_endian>(p, addi_12_12 + l(delta)); | |
6829 | p += 4; | |
6830 | write_insn<big_endian>(p, mtlr_0); | |
cf43a2fe | 6831 | } |
9e390558 AM |
6832 | p += 4; |
6833 | write_insn<big_endian>(p, mtctr_12); | |
6834 | p += 4; | |
407aa07c | 6835 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6836 | } |
ec661b9d | 6837 | } |
d49044c7 AM |
6838 | if (this->need_save_res_) |
6839 | { | |
6840 | p = oview + this->plt_size_ + this->branch_size_; | |
6841 | memcpy (p, this->targ_->savres_section()->contents(), | |
6842 | this->targ_->savres_section()->data_size()); | |
6843 | } | |
ec661b9d AM |
6844 | } |
6845 | ||
6846 | // Write out .glink. | |
6847 | ||
6848 | template<int size, bool big_endian> | |
6849 | void | |
6850 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
6851 | { | |
6852 | const section_size_type off = this->offset(); | |
6853 | const section_size_type oview_size = | |
6854 | convert_to_section_size_type(this->data_size()); | |
6855 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
6856 | unsigned char* p; | |
6857 | ||
6858 | // The base address of the .plt section. | |
6859 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
6860 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 6861 | |
ec661b9d AM |
6862 | if (size == 64) |
6863 | { | |
9055360d | 6864 | if (this->end_branch_table_ != 0) |
b4f7960d | 6865 | { |
9055360d AM |
6866 | // Write pltresolve stub. |
6867 | p = oview; | |
6868 | Address after_bcl = this->address() + 16; | |
6869 | Address pltoff = plt_base - after_bcl; | |
6870 | ||
6871 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 6872 | |
b4f7960d | 6873 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 6874 | { |
9055360d AM |
6875 | write_insn<big_endian>(p, mflr_12), p += 4; |
6876 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6877 | write_insn<big_endian>(p, mflr_11), p += 4; | |
6878 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
6879 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
6880 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
6881 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
6882 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
6883 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6884 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
6885 | } | |
6886 | else | |
6887 | { | |
63e5eea2 AM |
6888 | if (this->targ_->has_localentry0()) |
6889 | { | |
6890 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; | |
6891 | } | |
9055360d AM |
6892 | write_insn<big_endian>(p, mflr_0), p += 4; |
6893 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6894 | write_insn<big_endian>(p, mflr_11), p += 4; | |
9055360d | 6895 | write_insn<big_endian>(p, mtlr_0), p += 4; |
63e5eea2 AM |
6896 | if (this->targ_->has_localentry0()) |
6897 | { | |
6898 | write_insn<big_endian>(p, ld_0_11 + l(-20)), p += 4; | |
6899 | } | |
6900 | else | |
6901 | { | |
6902 | write_insn<big_endian>(p, ld_0_11 + l(-16)), p += 4; | |
6903 | } | |
9055360d | 6904 | write_insn<big_endian>(p, sub_12_12_11), p += 4; |
63e5eea2 AM |
6905 | write_insn<big_endian>(p, add_11_0_11), p += 4; |
6906 | write_insn<big_endian>(p, addi_0_12 + l(-44)), p += 4; | |
9055360d AM |
6907 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; |
6908 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
6909 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6910 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
6911 | } | |
407aa07c | 6912 | write_insn<big_endian>(p, bctr), p += 4; |
9e390558 | 6913 | gold_assert(p == oview + this->pltresolve_size()); |
9055360d AM |
6914 | |
6915 | // Write lazy link call stubs. | |
6916 | uint32_t indx = 0; | |
6917 | while (p < oview + this->end_branch_table_) | |
6918 | { | |
6919 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 6920 | { |
9055360d AM |
6921 | if (indx < 0x8000) |
6922 | { | |
6923 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
6924 | } | |
6925 | else | |
6926 | { | |
bbec1a5d | 6927 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
6928 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
6929 | } | |
b4f7960d | 6930 | } |
9055360d AM |
6931 | uint32_t branch_off = 8 - (p - oview); |
6932 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
6933 | indx++; | |
cf43a2fe | 6934 | } |
9055360d AM |
6935 | } |
6936 | ||
6937 | Address plt_base = this->targ_->plt_section()->address(); | |
6938 | Address iplt_base = invalid_address; | |
9e390558 | 6939 | unsigned int global_entry_off = this->global_entry_off(); |
9055360d AM |
6940 | Address global_entry_base = this->address() + global_entry_off; |
6941 | typename Global_entry_stub_entries::const_iterator ge; | |
6942 | for (ge = this->global_entry_stubs_.begin(); | |
6943 | ge != this->global_entry_stubs_.end(); | |
6944 | ++ge) | |
6945 | { | |
6946 | p = oview + global_entry_off + ge->second; | |
6947 | Address plt_addr = ge->first->plt_offset(); | |
6948 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
6949 | && ge->first->can_use_relative_reloc(false)) | |
6950 | { | |
6951 | if (iplt_base == invalid_address) | |
6952 | iplt_base = this->targ_->iplt_section()->address(); | |
6953 | plt_addr += iplt_base; | |
6954 | } | |
6955 | else | |
6956 | plt_addr += plt_base; | |
6957 | Address my_addr = global_entry_base + ge->second; | |
6958 | Address off = plt_addr - my_addr; | |
6959 | ||
6960 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
f073a3e8 | 6961 | gold_error(_("linkage table error against `%s'"), |
9055360d AM |
6962 | ge->first->demangled_name().c_str()); |
6963 | ||
6964 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
6965 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
6966 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
407aa07c | 6967 | write_insn<big_endian>(p, bctr); |
cf43a2fe AM |
6968 | } |
6969 | } | |
6970 | else | |
6971 | { | |
ec661b9d AM |
6972 | const Output_data_got_powerpc<size, big_endian>* got |
6973 | = this->targ_->got_section(); | |
dd93cd0a AM |
6974 | // The address of _GLOBAL_OFFSET_TABLE_. |
6975 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 6976 | |
cf43a2fe | 6977 | // Write out pltresolve branch table. |
ec661b9d | 6978 | p = oview; |
9e390558 | 6979 | unsigned int the_end = oview_size - this->pltresolve_size(); |
c9269dff | 6980 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
6981 | while (p < end_p - 8 * 4) |
6982 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
6983 | while (p < end_p) | |
6984 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 6985 | |
cf43a2fe | 6986 | // Write out pltresolve call stub. |
9e390558 | 6987 | end_p = oview + oview_size; |
cf43a2fe | 6988 | if (parameters->options().output_is_position_independent()) |
42cacb20 | 6989 | { |
ec661b9d | 6990 | Address res0_off = 0; |
dd93cd0a AM |
6991 | Address after_bcl_off = the_end + 12; |
6992 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe | 6993 | |
9e390558 AM |
6994 | write_insn<big_endian>(p, addis_11_11 + ha(bcl_res0)); |
6995 | p += 4; | |
6996 | write_insn<big_endian>(p, mflr_0); | |
6997 | p += 4; | |
6998 | write_insn<big_endian>(p, bcl_20_31); | |
6999 | p += 4; | |
7000 | write_insn<big_endian>(p, addi_11_11 + l(bcl_res0)); | |
7001 | p += 4; | |
7002 | write_insn<big_endian>(p, mflr_12); | |
7003 | p += 4; | |
7004 | write_insn<big_endian>(p, mtlr_0); | |
7005 | p += 4; | |
7006 | write_insn<big_endian>(p, sub_11_11_12); | |
7007 | p += 4; | |
cf43a2fe | 7008 | |
dd93cd0a | 7009 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe | 7010 | |
9e390558 AM |
7011 | write_insn<big_endian>(p, addis_12_12 + ha(got_bcl)); |
7012 | p += 4; | |
cf43a2fe AM |
7013 | if (ha(got_bcl) == ha(got_bcl + 4)) |
7014 | { | |
9e390558 AM |
7015 | write_insn<big_endian>(p, lwz_0_12 + l(got_bcl)); |
7016 | p += 4; | |
7017 | write_insn<big_endian>(p, lwz_12_12 + l(got_bcl + 4)); | |
cf43a2fe AM |
7018 | } |
7019 | else | |
7020 | { | |
9e390558 AM |
7021 | write_insn<big_endian>(p, lwzu_0_12 + l(got_bcl)); |
7022 | p += 4; | |
7023 | write_insn<big_endian>(p, lwz_12_12 + 4); | |
cf43a2fe | 7024 | } |
9e390558 AM |
7025 | p += 4; |
7026 | write_insn<big_endian>(p, mtctr_0); | |
7027 | p += 4; | |
7028 | write_insn<big_endian>(p, add_0_11_11); | |
7029 | p += 4; | |
7030 | write_insn<big_endian>(p, add_11_0_11); | |
42cacb20 | 7031 | } |
cf43a2fe | 7032 | else |
42cacb20 | 7033 | { |
ec661b9d | 7034 | Address res0 = this->address(); |
cf43a2fe | 7035 | |
9e390558 AM |
7036 | write_insn<big_endian>(p, lis_12 + ha(g_o_t + 4)); |
7037 | p += 4; | |
7038 | write_insn<big_endian>(p, addis_11_11 + ha(-res0)); | |
7039 | p += 4; | |
cf43a2fe | 7040 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 7041 | write_insn<big_endian>(p, lwz_0_12 + l(g_o_t + 4)); |
cf43a2fe | 7042 | else |
9e390558 AM |
7043 | write_insn<big_endian>(p, lwzu_0_12 + l(g_o_t + 4)); |
7044 | p += 4; | |
7045 | write_insn<big_endian>(p, addi_11_11 + l(-res0)); | |
7046 | p += 4; | |
7047 | write_insn<big_endian>(p, mtctr_0); | |
7048 | p += 4; | |
7049 | write_insn<big_endian>(p, add_0_11_11); | |
7050 | p += 4; | |
cf43a2fe | 7051 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 7052 | write_insn<big_endian>(p, lwz_12_12 + l(g_o_t + 8)); |
cf43a2fe | 7053 | else |
9e390558 AM |
7054 | write_insn<big_endian>(p, lwz_12_12 + 4); |
7055 | p += 4; | |
7056 | write_insn<big_endian>(p, add_11_0_11); | |
7057 | } | |
7058 | p += 4; | |
407aa07c AM |
7059 | write_insn<big_endian>(p, bctr); |
7060 | p += 4; | |
9e390558 AM |
7061 | while (p < end_p) |
7062 | { | |
7063 | write_insn<big_endian>(p, nop); | |
7064 | p += 4; | |
42cacb20 DE |
7065 | } |
7066 | } | |
7067 | ||
cf43a2fe AM |
7068 | of->write_output_view(off, oview_size, oview); |
7069 | } | |
7070 | ||
f3a0ed29 AM |
7071 | |
7072 | // A class to handle linker generated save/restore functions. | |
7073 | ||
7074 | template<int size, bool big_endian> | |
7075 | class Output_data_save_res : public Output_section_data_build | |
7076 | { | |
7077 | public: | |
7078 | Output_data_save_res(Symbol_table* symtab); | |
7079 | ||
d49044c7 AM |
7080 | const unsigned char* |
7081 | contents() const | |
7082 | { | |
7083 | return contents_; | |
7084 | } | |
7085 | ||
f3a0ed29 AM |
7086 | protected: |
7087 | // Write to a map file. | |
7088 | void | |
7089 | do_print_to_mapfile(Mapfile* mapfile) const | |
7090 | { mapfile->print_output_data(this, _("** save/restore")); } | |
7091 | ||
7092 | void | |
7093 | do_write(Output_file*); | |
7094 | ||
7095 | private: | |
7096 | // The maximum size of save/restore contents. | |
7097 | static const unsigned int savres_max = 218*4; | |
7098 | ||
7099 | void | |
7100 | savres_define(Symbol_table* symtab, | |
7101 | const char *name, | |
7102 | unsigned int lo, unsigned int hi, | |
7103 | unsigned char* write_ent(unsigned char*, int), | |
7104 | unsigned char* write_tail(unsigned char*, int)); | |
7105 | ||
7106 | unsigned char *contents_; | |
7107 | }; | |
7108 | ||
7109 | template<bool big_endian> | |
7110 | static unsigned char* | |
7111 | savegpr0(unsigned char* p, int r) | |
7112 | { | |
7113 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7114 | write_insn<big_endian>(p, insn); | |
7115 | return p + 4; | |
7116 | } | |
7117 | ||
7118 | template<bool big_endian> | |
7119 | static unsigned char* | |
7120 | savegpr0_tail(unsigned char* p, int r) | |
7121 | { | |
7122 | p = savegpr0<big_endian>(p, r); | |
7123 | uint32_t insn = std_0_1 + 16; | |
7124 | write_insn<big_endian>(p, insn); | |
7125 | p = p + 4; | |
7126 | write_insn<big_endian>(p, blr); | |
7127 | return p + 4; | |
7128 | } | |
7129 | ||
7130 | template<bool big_endian> | |
62fe925a | 7131 | static unsigned char* |
f3a0ed29 AM |
7132 | restgpr0(unsigned char* p, int r) |
7133 | { | |
7134 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7135 | write_insn<big_endian>(p, insn); | |
7136 | return p + 4; | |
7137 | } | |
7138 | ||
7139 | template<bool big_endian> | |
62fe925a | 7140 | static unsigned char* |
f3a0ed29 AM |
7141 | restgpr0_tail(unsigned char* p, int r) |
7142 | { | |
7143 | uint32_t insn = ld_0_1 + 16; | |
7144 | write_insn<big_endian>(p, insn); | |
7145 | p = p + 4; | |
7146 | p = restgpr0<big_endian>(p, r); | |
7147 | write_insn<big_endian>(p, mtlr_0); | |
7148 | p = p + 4; | |
7149 | if (r == 29) | |
7150 | { | |
7151 | p = restgpr0<big_endian>(p, 30); | |
7152 | p = restgpr0<big_endian>(p, 31); | |
7153 | } | |
7154 | write_insn<big_endian>(p, blr); | |
7155 | return p + 4; | |
7156 | } | |
7157 | ||
7158 | template<bool big_endian> | |
62fe925a | 7159 | static unsigned char* |
f3a0ed29 AM |
7160 | savegpr1(unsigned char* p, int r) |
7161 | { | |
7162 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7163 | write_insn<big_endian>(p, insn); | |
7164 | return p + 4; | |
7165 | } | |
7166 | ||
7167 | template<bool big_endian> | |
62fe925a | 7168 | static unsigned char* |
f3a0ed29 AM |
7169 | savegpr1_tail(unsigned char* p, int r) |
7170 | { | |
7171 | p = savegpr1<big_endian>(p, r); | |
7172 | write_insn<big_endian>(p, blr); | |
7173 | return p + 4; | |
7174 | } | |
7175 | ||
7176 | template<bool big_endian> | |
62fe925a | 7177 | static unsigned char* |
f3a0ed29 AM |
7178 | restgpr1(unsigned char* p, int r) |
7179 | { | |
7180 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7181 | write_insn<big_endian>(p, insn); | |
7182 | return p + 4; | |
7183 | } | |
7184 | ||
7185 | template<bool big_endian> | |
62fe925a | 7186 | static unsigned char* |
f3a0ed29 AM |
7187 | restgpr1_tail(unsigned char* p, int r) |
7188 | { | |
7189 | p = restgpr1<big_endian>(p, r); | |
7190 | write_insn<big_endian>(p, blr); | |
7191 | return p + 4; | |
7192 | } | |
7193 | ||
7194 | template<bool big_endian> | |
62fe925a | 7195 | static unsigned char* |
f3a0ed29 AM |
7196 | savefpr(unsigned char* p, int r) |
7197 | { | |
7198 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7199 | write_insn<big_endian>(p, insn); | |
7200 | return p + 4; | |
7201 | } | |
7202 | ||
7203 | template<bool big_endian> | |
62fe925a | 7204 | static unsigned char* |
f3a0ed29 AM |
7205 | savefpr0_tail(unsigned char* p, int r) |
7206 | { | |
7207 | p = savefpr<big_endian>(p, r); | |
7208 | write_insn<big_endian>(p, std_0_1 + 16); | |
7209 | p = p + 4; | |
7210 | write_insn<big_endian>(p, blr); | |
7211 | return p + 4; | |
7212 | } | |
7213 | ||
7214 | template<bool big_endian> | |
62fe925a | 7215 | static unsigned char* |
f3a0ed29 AM |
7216 | restfpr(unsigned char* p, int r) |
7217 | { | |
7218 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
7219 | write_insn<big_endian>(p, insn); | |
7220 | return p + 4; | |
7221 | } | |
7222 | ||
7223 | template<bool big_endian> | |
62fe925a | 7224 | static unsigned char* |
f3a0ed29 AM |
7225 | restfpr0_tail(unsigned char* p, int r) |
7226 | { | |
7227 | write_insn<big_endian>(p, ld_0_1 + 16); | |
7228 | p = p + 4; | |
7229 | p = restfpr<big_endian>(p, r); | |
7230 | write_insn<big_endian>(p, mtlr_0); | |
7231 | p = p + 4; | |
7232 | if (r == 29) | |
7233 | { | |
7234 | p = restfpr<big_endian>(p, 30); | |
7235 | p = restfpr<big_endian>(p, 31); | |
7236 | } | |
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 | savefpr1_tail(unsigned char* p, int r) |
7244 | { | |
7245 | p = savefpr<big_endian>(p, r); | |
7246 | write_insn<big_endian>(p, blr); | |
7247 | return p + 4; | |
7248 | } | |
7249 | ||
7250 | template<bool big_endian> | |
62fe925a | 7251 | static unsigned char* |
f3a0ed29 AM |
7252 | restfpr1_tail(unsigned char* p, int r) |
7253 | { | |
7254 | p = restfpr<big_endian>(p, r); | |
7255 | write_insn<big_endian>(p, blr); | |
7256 | return p + 4; | |
7257 | } | |
7258 | ||
7259 | template<bool big_endian> | |
62fe925a | 7260 | static unsigned char* |
f3a0ed29 AM |
7261 | savevr(unsigned char* p, int r) |
7262 | { | |
7263 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
7264 | write_insn<big_endian>(p, insn); | |
7265 | p = p + 4; | |
7266 | insn = stvx_0_12_0 + (r << 21); | |
7267 | write_insn<big_endian>(p, insn); | |
7268 | return p + 4; | |
7269 | } | |
7270 | ||
7271 | template<bool big_endian> | |
62fe925a | 7272 | static unsigned char* |
f3a0ed29 AM |
7273 | savevr_tail(unsigned char* p, int r) |
7274 | { | |
7275 | p = savevr<big_endian>(p, r); | |
7276 | write_insn<big_endian>(p, blr); | |
7277 | return p + 4; | |
7278 | } | |
7279 | ||
7280 | template<bool big_endian> | |
62fe925a | 7281 | static unsigned char* |
f3a0ed29 AM |
7282 | restvr(unsigned char* p, int r) |
7283 | { | |
7284 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
7285 | write_insn<big_endian>(p, insn); | |
7286 | p = p + 4; | |
7287 | insn = lvx_0_12_0 + (r << 21); | |
7288 | write_insn<big_endian>(p, insn); | |
7289 | return p + 4; | |
7290 | } | |
7291 | ||
7292 | template<bool big_endian> | |
62fe925a | 7293 | static unsigned char* |
f3a0ed29 AM |
7294 | restvr_tail(unsigned char* p, int r) |
7295 | { | |
7296 | p = restvr<big_endian>(p, r); | |
7297 | write_insn<big_endian>(p, blr); | |
7298 | return p + 4; | |
7299 | } | |
7300 | ||
7301 | ||
7302 | template<int size, bool big_endian> | |
7303 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
7304 | Symbol_table* symtab) | |
7305 | : Output_section_data_build(4), | |
7306 | contents_(NULL) | |
7307 | { | |
7308 | this->savres_define(symtab, | |
7309 | "_savegpr0_", 14, 31, | |
7310 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
7311 | this->savres_define(symtab, | |
7312 | "_restgpr0_", 14, 29, | |
7313 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
7314 | this->savres_define(symtab, | |
7315 | "_restgpr0_", 30, 31, | |
7316 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
7317 | this->savres_define(symtab, | |
7318 | "_savegpr1_", 14, 31, | |
7319 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
7320 | this->savres_define(symtab, | |
7321 | "_restgpr1_", 14, 31, | |
7322 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
7323 | this->savres_define(symtab, | |
7324 | "_savefpr_", 14, 31, | |
7325 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
7326 | this->savres_define(symtab, | |
7327 | "_restfpr_", 14, 29, | |
7328 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
7329 | this->savres_define(symtab, | |
7330 | "_restfpr_", 30, 31, | |
7331 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
7332 | this->savres_define(symtab, | |
7333 | "._savef", 14, 31, | |
7334 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
7335 | this->savres_define(symtab, | |
7336 | "._restf", 14, 31, | |
7337 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
7338 | this->savres_define(symtab, | |
7339 | "_savevr_", 20, 31, | |
7340 | savevr<big_endian>, savevr_tail<big_endian>); | |
7341 | this->savres_define(symtab, | |
7342 | "_restvr_", 20, 31, | |
7343 | restvr<big_endian>, restvr_tail<big_endian>); | |
7344 | } | |
7345 | ||
7346 | template<int size, bool big_endian> | |
7347 | void | |
7348 | Output_data_save_res<size, big_endian>::savres_define( | |
7349 | Symbol_table* symtab, | |
7350 | const char *name, | |
7351 | unsigned int lo, unsigned int hi, | |
7352 | unsigned char* write_ent(unsigned char*, int), | |
7353 | unsigned char* write_tail(unsigned char*, int)) | |
7354 | { | |
7355 | size_t len = strlen(name); | |
7356 | bool writing = false; | |
7357 | char sym[16]; | |
7358 | ||
7359 | memcpy(sym, name, len); | |
7360 | sym[len + 2] = 0; | |
7361 | ||
7362 | for (unsigned int i = lo; i <= hi; i++) | |
7363 | { | |
7364 | sym[len + 0] = i / 10 + '0'; | |
7365 | sym[len + 1] = i % 10 + '0'; | |
7366 | Symbol* gsym = symtab->lookup(sym); | |
7367 | bool refd = gsym != NULL && gsym->is_undefined(); | |
7368 | writing = writing || refd; | |
7369 | if (writing) | |
7370 | { | |
7371 | if (this->contents_ == NULL) | |
7372 | this->contents_ = new unsigned char[this->savres_max]; | |
7373 | ||
ec661b9d | 7374 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
7375 | unsigned char* p = this->contents_ + value; |
7376 | if (i != hi) | |
7377 | p = write_ent(p, i); | |
7378 | else | |
7379 | p = write_tail(p, i); | |
ec661b9d | 7380 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
7381 | this->set_current_data_size(cur_size); |
7382 | if (refd) | |
7383 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
7384 | this, value, cur_size - value, | |
7385 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
7386 | elfcpp::STV_HIDDEN, 0, false, false); | |
7387 | } | |
7388 | } | |
7389 | } | |
7390 | ||
7391 | // Write out save/restore. | |
7392 | ||
7393 | template<int size, bool big_endian> | |
7394 | void | |
7395 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
7396 | { | |
ec661b9d | 7397 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
7398 | const section_size_type oview_size = |
7399 | convert_to_section_size_type(this->data_size()); | |
7400 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
7401 | memcpy(oview, this->contents_, oview_size); | |
7402 | of->write_output_view(off, oview_size, oview); | |
7403 | } | |
7404 | ||
7405 | ||
cf43a2fe | 7406 | // Create the glink section. |
42cacb20 | 7407 | |
cf43a2fe AM |
7408 | template<int size, bool big_endian> |
7409 | void | |
7410 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
7411 | { | |
7412 | if (this->glink_ == NULL) | |
7413 | { | |
7414 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 7415 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
7416 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
7417 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
7418 | this->glink_, ORDER_TEXT, false); | |
7419 | } | |
42cacb20 DE |
7420 | } |
7421 | ||
7422 | // Create a PLT entry for a global symbol. | |
7423 | ||
7424 | template<int size, bool big_endian> | |
7425 | void | |
ec661b9d AM |
7426 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
7427 | Layout* layout, | |
7428 | Symbol* gsym) | |
42cacb20 | 7429 | { |
e5d5f5ed AM |
7430 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
7431 | && gsym->can_use_relative_reloc(false)) | |
7432 | { | |
7433 | if (this->iplt_ == NULL) | |
40b469d7 | 7434 | this->make_iplt_section(symtab, layout); |
03e25981 | 7435 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
7436 | } |
7437 | else | |
7438 | { | |
7439 | if (this->plt_ == NULL) | |
40b469d7 | 7440 | this->make_plt_section(symtab, layout); |
03e25981 | 7441 | this->plt_->add_entry(gsym); |
e5d5f5ed | 7442 | } |
e5d5f5ed | 7443 | } |
42cacb20 | 7444 | |
2d7ad24e AM |
7445 | // Make a PLT entry for a local symbol. |
7446 | ||
7447 | template<int size, bool big_endian> | |
7448 | void | |
7449 | Target_powerpc<size, big_endian>::make_local_plt_entry( | |
7450 | Layout* layout, | |
7451 | Sized_relobj_file<size, big_endian>* relobj, | |
7452 | unsigned int r_sym) | |
7453 | { | |
7454 | if (this->lplt_ == NULL) | |
7455 | this->make_lplt_section(layout); | |
7456 | this->lplt_->add_local_entry(relobj, r_sym); | |
7457 | } | |
7458 | ||
e5d5f5ed | 7459 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 7460 | |
e5d5f5ed AM |
7461 | template<int size, bool big_endian> |
7462 | void | |
7463 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 7464 | Symbol_table* symtab, |
e5d5f5ed | 7465 | Layout* layout, |
ec661b9d AM |
7466 | Sized_relobj_file<size, big_endian>* relobj, |
7467 | unsigned int r_sym) | |
e5d5f5ed AM |
7468 | { |
7469 | if (this->iplt_ == NULL) | |
40b469d7 | 7470 | this->make_iplt_section(symtab, layout); |
03e25981 | 7471 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
7472 | } |
7473 | ||
0e70b911 CC |
7474 | // Return the number of entries in the PLT. |
7475 | ||
7476 | template<int size, bool big_endian> | |
7477 | unsigned int | |
7478 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
7479 | { | |
7480 | if (this->plt_ == NULL) | |
7481 | return 0; | |
b3ccdeb5 | 7482 | return this->plt_->entry_count(); |
0e70b911 CC |
7483 | } |
7484 | ||
dd93cd0a | 7485 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
7486 | |
7487 | template<int size, bool big_endian> | |
7488 | unsigned int | |
dd93cd0a | 7489 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
7490 | Symbol_table* symtab, |
7491 | Layout* layout, | |
7492 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 7493 | { |
dd93cd0a | 7494 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
7495 | { |
7496 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
7497 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
7498 | Output_data_got_powerpc<size, big_endian>* got |
7499 | = this->got_section(symtab, layout); | |
7500 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
7501 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
7502 | got_offset, 0); | |
dd93cd0a | 7503 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 7504 | } |
dd93cd0a | 7505 | return this->tlsld_got_offset_; |
42cacb20 DE |
7506 | } |
7507 | ||
95a2c8d6 RS |
7508 | // Get the Reference_flags for a particular relocation. |
7509 | ||
7510 | template<int size, bool big_endian> | |
7511 | int | |
88b8e639 AM |
7512 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
7513 | unsigned int r_type, | |
7514 | const Target_powerpc* target) | |
95a2c8d6 | 7515 | { |
88b8e639 AM |
7516 | int ref = 0; |
7517 | ||
95a2c8d6 RS |
7518 | switch (r_type) |
7519 | { | |
7520 | case elfcpp::R_POWERPC_NONE: | |
7521 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7522 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7523 | case elfcpp::R_PPC64_TOC: | |
7524 | // No symbol reference. | |
88b8e639 | 7525 | break; |
95a2c8d6 | 7526 | |
dd93cd0a AM |
7527 | case elfcpp::R_PPC64_ADDR64: |
7528 | case elfcpp::R_PPC64_UADDR64: | |
7529 | case elfcpp::R_POWERPC_ADDR32: | |
7530 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 7531 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 7532 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
7533 | case elfcpp::R_POWERPC_ADDR16_LO: |
7534 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7535 | case elfcpp::R_POWERPC_ADDR16_HA: | |
89c52ae3 AM |
7536 | case elfcpp::R_PPC64_ADDR16_HIGHER34: |
7537 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
7538 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
7539 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
7540 | case elfcpp::R_PPC64_D34: | |
7541 | case elfcpp::R_PPC64_D34_LO: | |
7542 | case elfcpp::R_PPC64_D34_HI30: | |
7543 | case elfcpp::R_PPC64_D34_HA30: | |
7544 | case elfcpp::R_PPC64_D28: | |
88b8e639 AM |
7545 | ref = Symbol::ABSOLUTE_REF; |
7546 | break; | |
95a2c8d6 | 7547 | |
dd93cd0a AM |
7548 | case elfcpp::R_POWERPC_ADDR24: |
7549 | case elfcpp::R_POWERPC_ADDR14: | |
7550 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7551 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
7552 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
7553 | break; | |
dd93cd0a | 7554 | |
e5d5f5ed | 7555 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 7556 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 7557 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
7558 | case elfcpp::R_POWERPC_REL16: |
7559 | case elfcpp::R_POWERPC_REL16_LO: | |
7560 | case elfcpp::R_POWERPC_REL16_HI: | |
7561 | case elfcpp::R_POWERPC_REL16_HA: | |
c432bbba AM |
7562 | case elfcpp::R_PPC64_REL16_HIGH: |
7563 | case elfcpp::R_PPC64_REL16_HIGHA: | |
7564 | case elfcpp::R_PPC64_REL16_HIGHER: | |
7565 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
7566 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
7567 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
e4dff765 AM |
7568 | case elfcpp::R_PPC64_PCREL34: |
7569 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7570 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7571 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7572 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
7573 | case elfcpp::R_PPC64_PCREL28: | |
88b8e639 AM |
7574 | ref = Symbol::RELATIVE_REF; |
7575 | break; | |
95a2c8d6 | 7576 | |
32f59844 AM |
7577 | case elfcpp::R_PPC64_REL24_NOTOC: |
7578 | if (size == 32) | |
7579 | break; | |
7580 | // Fall through. | |
dd93cd0a | 7581 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 7582 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
7583 | case elfcpp::R_POWERPC_REL14: |
7584 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7585 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
7586 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
7587 | break; | |
95a2c8d6 RS |
7588 | |
7589 | case elfcpp::R_POWERPC_GOT16: | |
7590 | case elfcpp::R_POWERPC_GOT16_LO: | |
7591 | case elfcpp::R_POWERPC_GOT16_HI: | |
7592 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
7593 | case elfcpp::R_PPC64_GOT16_DS: |
7594 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7595 | case elfcpp::R_PPC64_GOT_PCREL34: |
95a2c8d6 RS |
7596 | case elfcpp::R_PPC64_TOC16: |
7597 | case elfcpp::R_PPC64_TOC16_LO: | |
7598 | case elfcpp::R_PPC64_TOC16_HI: | |
7599 | case elfcpp::R_PPC64_TOC16_HA: | |
7600 | case elfcpp::R_PPC64_TOC16_DS: | |
7601 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
08be3224 AM |
7602 | case elfcpp::R_POWERPC_PLT16_LO: |
7603 | case elfcpp::R_POWERPC_PLT16_HI: | |
7604 | case elfcpp::R_POWERPC_PLT16_HA: | |
7605 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
e4dff765 AM |
7606 | case elfcpp::R_PPC64_PLT_PCREL34: |
7607 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
32d849b3 | 7608 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 7609 | break; |
95a2c8d6 RS |
7610 | |
7611 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7612 | case elfcpp::R_POWERPC_TLS: | |
89c52ae3 AM |
7613 | case elfcpp::R_PPC64_TLSGD: |
7614 | case elfcpp::R_PPC64_TLSLD: | |
7615 | case elfcpp::R_PPC64_TPREL34: | |
7616 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
7617 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
7618 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
7619 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
7620 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
88b8e639 AM |
7621 | ref = Symbol::TLS_REF; |
7622 | break; | |
95a2c8d6 RS |
7623 | |
7624 | case elfcpp::R_POWERPC_COPY: | |
7625 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7626 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7627 | case elfcpp::R_POWERPC_RELATIVE: | |
7628 | case elfcpp::R_POWERPC_DTPMOD: | |
7629 | default: | |
7630 | // Not expected. We will give an error later. | |
88b8e639 | 7631 | break; |
95a2c8d6 | 7632 | } |
88b8e639 AM |
7633 | |
7634 | if (size == 64 && target->abiversion() < 2) | |
7635 | ref |= Symbol::FUNC_DESC_ABI; | |
7636 | return ref; | |
95a2c8d6 RS |
7637 | } |
7638 | ||
42cacb20 DE |
7639 | // Report an unsupported relocation against a local symbol. |
7640 | ||
7641 | template<int size, bool big_endian> | |
7642 | void | |
7643 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
7644 | Sized_relobj_file<size, big_endian>* object, |
7645 | unsigned int r_type) | |
42cacb20 DE |
7646 | { |
7647 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
7648 | object->name().c_str(), r_type); | |
7649 | } | |
7650 | ||
7651 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
7652 | // dynamic linker does not support it, issue an error. | |
7653 | ||
7654 | template<int size, bool big_endian> | |
7655 | void | |
7656 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
7657 | unsigned int r_type) | |
7658 | { | |
7659 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
7660 | ||
7661 | // These are the relocation types supported by glibc for both 32-bit | |
7662 | // and 64-bit powerpc. | |
7663 | switch (r_type) | |
7664 | { | |
3ea0a085 | 7665 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
7666 | case elfcpp::R_POWERPC_RELATIVE: |
7667 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7668 | case elfcpp::R_POWERPC_DTPMOD: | |
7669 | case elfcpp::R_POWERPC_DTPREL: | |
7670 | case elfcpp::R_POWERPC_TPREL: | |
7671 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7672 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 7673 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 7674 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 7675 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 7676 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
7677 | case elfcpp::R_POWERPC_ADDR16: |
7678 | case elfcpp::R_POWERPC_UADDR16: | |
7679 | case elfcpp::R_POWERPC_ADDR16_LO: | |
7680 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7681 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7682 | case elfcpp::R_POWERPC_ADDR14: | |
7683 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7684 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7685 | case elfcpp::R_POWERPC_REL32: | |
3ea0a085 AM |
7686 | case elfcpp::R_POWERPC_TPREL16: |
7687 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7688 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7689 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
7690 | return; |
7691 | ||
7692 | default: | |
7693 | break; | |
7694 | } | |
7695 | ||
7696 | if (size == 64) | |
7697 | { | |
7698 | switch (r_type) | |
7699 | { | |
7700 | // These are the relocation types supported only on 64-bit. | |
7701 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 7702 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 7703 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 7704 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 7705 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
7706 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7707 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
7708 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7709 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7710 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7711 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 7712 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
7713 | case elfcpp::R_POWERPC_ADDR30: |
7714 | case elfcpp::R_PPC64_TPREL16_DS: | |
7715 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7716 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7717 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
7718 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
7719 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7720 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7721 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
7722 | return; |
7723 | ||
7724 | default: | |
7725 | break; | |
7726 | } | |
7727 | } | |
7728 | else | |
7729 | { | |
7730 | switch (r_type) | |
7731 | { | |
7732 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 | 7733 | // ??? glibc ld.so doesn't need to support these. |
e59a1001 | 7734 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
7735 | case elfcpp::R_POWERPC_DTPREL16: |
7736 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7737 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7738 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7739 | return; | |
42cacb20 DE |
7740 | |
7741 | default: | |
7742 | break; | |
7743 | } | |
7744 | } | |
7745 | ||
7746 | // This prevents us from issuing more than one error per reloc | |
7747 | // section. But we can still wind up issuing more than one | |
7748 | // error per object file. | |
7749 | if (this->issued_non_pic_error_) | |
7750 | return; | |
33aea2fd | 7751 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
7752 | object->error(_("requires unsupported dynamic reloc; " |
7753 | "recompile with -fPIC")); | |
7754 | this->issued_non_pic_error_ = true; | |
7755 | return; | |
7756 | } | |
7757 | ||
e5d5f5ed AM |
7758 | // Return whether we need to make a PLT entry for a relocation of the |
7759 | // given type against a STT_GNU_IFUNC symbol. | |
7760 | ||
7761 | template<int size, bool big_endian> | |
7762 | bool | |
7763 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 7764 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 7765 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
7766 | unsigned int r_type, |
7767 | bool report_err) | |
e5d5f5ed | 7768 | { |
c9824451 AM |
7769 | // In non-pic code any reference will resolve to the plt call stub |
7770 | // for the ifunc symbol. | |
9055360d AM |
7771 | if ((size == 32 || target->abiversion() >= 2) |
7772 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
7773 | return true; |
7774 | ||
e5d5f5ed AM |
7775 | switch (r_type) |
7776 | { | |
b3ccdeb5 | 7777 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
7778 | case elfcpp::R_POWERPC_ADDR32: |
7779 | case elfcpp::R_POWERPC_UADDR32: | |
7780 | if (size == 32) | |
b3ccdeb5 | 7781 | return false; |
e5d5f5ed AM |
7782 | break; |
7783 | ||
7784 | case elfcpp::R_PPC64_ADDR64: | |
7785 | case elfcpp::R_PPC64_UADDR64: | |
7786 | if (size == 64) | |
b3ccdeb5 | 7787 | return false; |
e5d5f5ed AM |
7788 | break; |
7789 | ||
b3ccdeb5 | 7790 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
7791 | case elfcpp::R_POWERPC_GOT16: |
7792 | case elfcpp::R_POWERPC_GOT16_LO: | |
7793 | case elfcpp::R_POWERPC_GOT16_HI: | |
7794 | case elfcpp::R_POWERPC_GOT16_HA: | |
7795 | case elfcpp::R_PPC64_GOT16_DS: | |
7796 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7797 | case elfcpp::R_PPC64_GOT_PCREL34: |
b3ccdeb5 | 7798 | return false; |
e5d5f5ed | 7799 | |
08be3224 AM |
7800 | // PLT relocs are OK and need a PLT entry. |
7801 | case elfcpp::R_POWERPC_PLT16_LO: | |
7802 | case elfcpp::R_POWERPC_PLT16_HI: | |
7803 | case elfcpp::R_POWERPC_PLT16_HA: | |
7804 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
23cedd1d AM |
7805 | case elfcpp::R_POWERPC_PLTSEQ: |
7806 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7807 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7808 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7809 | case elfcpp::R_PPC64_PLT_PCREL34: |
7810 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
08be3224 AM |
7811 | return true; |
7812 | break; | |
7813 | ||
b3ccdeb5 | 7814 | // Function calls are good, and these do need a PLT entry. |
32f59844 AM |
7815 | case elfcpp::R_PPC64_REL24_NOTOC: |
7816 | if (size == 32) | |
7817 | break; | |
7818 | // Fall through. | |
e5d5f5ed AM |
7819 | case elfcpp::R_POWERPC_ADDR24: |
7820 | case elfcpp::R_POWERPC_ADDR14: | |
7821 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7822 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7823 | case elfcpp::R_POWERPC_REL24: | |
7824 | case elfcpp::R_PPC_PLTREL24: | |
7825 | case elfcpp::R_POWERPC_REL14: | |
7826 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7827 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7828 | return true; | |
7829 | ||
7830 | default: | |
7831 | break; | |
7832 | } | |
7833 | ||
7834 | // Anything else is a problem. | |
7835 | // If we are building a static executable, the libc startup function | |
7836 | // responsible for applying indirect function relocations is going | |
7837 | // to complain about the reloc type. | |
7838 | // If we are building a dynamic executable, we will have a text | |
7839 | // relocation. The dynamic loader will set the text segment | |
7840 | // writable and non-executable to apply text relocations. So we'll | |
7841 | // segfault when trying to run the indirection function to resolve | |
7842 | // the reloc. | |
b3ccdeb5 AM |
7843 | if (report_err) |
7844 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
7845 | object->name().c_str(), r_type); |
7846 | return false; | |
7847 | } | |
7848 | ||
5edad15d AM |
7849 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
7850 | // reloc. | |
7851 | ||
7852 | static bool | |
7853 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
7854 | { | |
7855 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
7856 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7857 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7858 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7859 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7860 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7861 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7862 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7863 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7864 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7865 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7866 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7867 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7868 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7869 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7870 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
7871 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
7872 | /* Exclude lfqu by testing reloc. If relocs are ever | |
7873 | defined for the reduced D field in psq_lu then those | |
7874 | will need testing too. */ | |
7875 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7876 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7877 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
7878 | && (insn & 1) == 0) | |
7879 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
7880 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
7881 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
7882 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7883 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7884 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
7885 | && (insn & 1) == 0)); | |
7886 | } | |
7887 | ||
42cacb20 DE |
7888 | // Scan a relocation for a local symbol. |
7889 | ||
7890 | template<int size, bool big_endian> | |
7891 | inline void | |
7892 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
7893 | Symbol_table* symtab, |
7894 | Layout* layout, | |
7895 | Target_powerpc<size, big_endian>* target, | |
7896 | Sized_relobj_file<size, big_endian>* object, | |
7897 | unsigned int data_shndx, | |
7898 | Output_section* output_section, | |
7899 | const elfcpp::Rela<size, big_endian>& reloc, | |
7900 | unsigned int r_type, | |
e5d5f5ed | 7901 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 7902 | bool is_discarded) |
42cacb20 | 7903 | { |
0af4fcc2 AM |
7904 | Powerpc_relobj<size, big_endian>* ppc_object |
7905 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7906 | ||
7907 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, NULL)) | |
7908 | { | |
7909 | case Track_tls::NOT_EXPECTED: | |
7910 | ppc_object->set_no_tls_marker(); | |
7911 | break; | |
7912 | default: | |
7913 | break; | |
7914 | } | |
e3deeb9c AM |
7915 | |
7916 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7917 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7918 | { | |
7919 | this->expect_tls_get_addr_call(); | |
0af4fcc2 AM |
7920 | if (!ppc_object->no_tls_marker()) |
7921 | { | |
7922 | tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
7923 | if (tls_type != tls::TLSOPT_NONE) | |
7924 | { | |
7925 | this->skip_next_tls_get_addr_call(); | |
7926 | ppc_object->set_tls_marker(); | |
7927 | } | |
7928 | } | |
e3deeb9c AM |
7929 | } |
7930 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7931 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7932 | { | |
7933 | this->expect_tls_get_addr_call(); | |
0af4fcc2 AM |
7934 | if (!ppc_object->no_tls_marker()) |
7935 | { | |
7936 | tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7937 | if (tls_type != tls::TLSOPT_NONE) | |
7938 | { | |
7939 | this->skip_next_tls_get_addr_call(); | |
7940 | ppc_object->set_tls_marker(); | |
7941 | } | |
7942 | } | |
e3deeb9c AM |
7943 | } |
7944 | ||
bfdfa4cd AM |
7945 | if (is_discarded) |
7946 | { | |
7947 | if (size == 64 | |
7948 | && data_shndx == ppc_object->opd_shndx() | |
7949 | && r_type == elfcpp::R_PPC64_ADDR64) | |
7950 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
7951 | return; | |
7952 | } | |
7953 | ||
e5d5f5ed AM |
7954 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
7955 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 7956 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 7957 | { |
ec661b9d AM |
7958 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
7959 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7960 | r_type, r_sym, reloc.get_r_addend()); | |
7961 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 7962 | } |
e5d5f5ed | 7963 | |
42cacb20 DE |
7964 | switch (r_type) |
7965 | { | |
7966 | case elfcpp::R_POWERPC_NONE: | |
7967 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7968 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 7969 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 7970 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
7971 | case elfcpp::R_POWERPC_PLTSEQ: |
7972 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7973 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7974 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7975 | case elfcpp::R_PPC64_PCREL_OPT: |
7976 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
7977 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
7978 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
7979 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
7980 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7981 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7982 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7983 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
e4dff765 AM |
7984 | case elfcpp::R_PPC64_D34: |
7985 | case elfcpp::R_PPC64_D34_LO: | |
7986 | case elfcpp::R_PPC64_D34_HI30: | |
7987 | case elfcpp::R_PPC64_D34_HA30: | |
7988 | case elfcpp::R_PPC64_D28: | |
7989 | case elfcpp::R_PPC64_PCREL34: | |
7990 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
7991 | case elfcpp::R_PPC64_TPREL34: |
7992 | case elfcpp::R_PPC64_DTPREL34: | |
dd93cd0a AM |
7993 | break; |
7994 | ||
7995 | case elfcpp::R_PPC64_TOC: | |
7996 | { | |
7997 | Output_data_got_powerpc<size, big_endian>* got | |
7998 | = target->got_section(symtab, layout); | |
7999 | if (parameters->options().output_is_position_independent()) | |
8000 | { | |
bfdfa4cd AM |
8001 | Address off = reloc.get_r_offset(); |
8002 | if (size == 64 | |
9055360d | 8003 | && target->abiversion() < 2 |
bfdfa4cd AM |
8004 | && data_shndx == ppc_object->opd_shndx() |
8005 | && ppc_object->get_opd_discard(off - 8)) | |
8006 | break; | |
8007 | ||
dd93cd0a | 8008 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 8009 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
8010 | rela_dyn->add_output_section_relative(got->output_section(), |
8011 | elfcpp::R_POWERPC_RELATIVE, | |
8012 | output_section, | |
bfdfa4cd AM |
8013 | object, data_shndx, off, |
8014 | symobj->toc_base_offset()); | |
dd93cd0a AM |
8015 | } |
8016 | } | |
42cacb20 DE |
8017 | break; |
8018 | ||
8019 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 8020 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 8021 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
8022 | case elfcpp::R_POWERPC_UADDR32: |
8023 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 8024 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 8025 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
8026 | case elfcpp::R_POWERPC_ADDR16_HI: |
8027 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 8028 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
8029 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8030 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
8031 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
8032 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
8033 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
8034 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
8035 | case elfcpp::R_PPC64_ADDR16_DS: | |
8036 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
8037 | case elfcpp::R_POWERPC_ADDR14: | |
8038 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8039 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
8040 | // If building a shared library (or a position-independent |
8041 | // executable), we need to create a dynamic relocation for | |
8042 | // this location. | |
c9824451 | 8043 | if (parameters->options().output_is_position_independent() |
9055360d | 8044 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 8045 | { |
b3ccdeb5 AM |
8046 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
8047 | is_ifunc); | |
1f98a074 | 8048 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
8049 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
8050 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 8051 | { |
b3ccdeb5 AM |
8052 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
8053 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 8054 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
8055 | output_section, data_shndx, |
8056 | reloc.get_r_offset(), | |
c9824451 | 8057 | reloc.get_r_addend(), false); |
2e702c99 | 8058 | } |
1f98a074 | 8059 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 8060 | { |
dd93cd0a | 8061 | check_non_pic(object, r_type); |
dd93cd0a AM |
8062 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
8063 | data_shndx, reloc.get_r_offset(), | |
8064 | reloc.get_r_addend()); | |
2e702c99 | 8065 | } |
1f98a074 AM |
8066 | else |
8067 | { | |
8068 | gold_assert(lsym.get_st_value() == 0); | |
8069 | unsigned int shndx = lsym.get_st_shndx(); | |
8070 | bool is_ordinary; | |
8071 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
8072 | &is_ordinary); | |
8073 | if (!is_ordinary) | |
8074 | object->error(_("section symbol %u has bad shndx %u"), | |
8075 | r_sym, shndx); | |
8076 | else | |
8077 | rela_dyn->add_local_section(object, shndx, r_type, | |
8078 | output_section, data_shndx, | |
8079 | reloc.get_r_offset()); | |
8080 | } | |
2e702c99 | 8081 | } |
42cacb20 DE |
8082 | break; |
8083 | ||
e4dff765 AM |
8084 | case elfcpp::R_PPC64_PLT_PCREL34: |
8085 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
2d7ad24e AM |
8086 | case elfcpp::R_POWERPC_PLT16_LO: |
8087 | case elfcpp::R_POWERPC_PLT16_HI: | |
8088 | case elfcpp::R_POWERPC_PLT16_HA: | |
8089 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8090 | if (!is_ifunc) | |
8091 | { | |
8092 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8093 | target->make_local_plt_entry(layout, object, r_sym); | |
8094 | } | |
8095 | break; | |
8096 | ||
32f59844 AM |
8097 | case elfcpp::R_PPC64_REL24_NOTOC: |
8098 | if (size == 32) | |
8099 | break; | |
8100 | // Fall through. | |
42cacb20 | 8101 | case elfcpp::R_POWERPC_REL24: |
c9824451 | 8102 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 8103 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
8104 | case elfcpp::R_POWERPC_REL14: |
8105 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8106 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 8107 | if (!is_ifunc) |
0e123f69 AM |
8108 | { |
8109 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8110 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
8111 | r_type, r_sym, reloc.get_r_addend()); | |
8112 | } | |
ec661b9d AM |
8113 | break; |
8114 | ||
7e57d19e AM |
8115 | case elfcpp::R_PPC64_TOCSAVE: |
8116 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
8117 | // caller has already saved r2 and thus a plt call stub need not | |
8118 | // save r2. | |
8119 | if (size == 64 | |
8120 | && target->mark_pltcall(ppc_object, data_shndx, | |
8121 | reloc.get_r_offset() - 4, symtab)) | |
8122 | { | |
8123 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8124 | unsigned int shndx = lsym.get_st_shndx(); | |
8125 | bool is_ordinary; | |
8126 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8127 | if (!is_ordinary) | |
8128 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
8129 | r_sym, shndx); | |
8130 | else | |
8131 | target->add_tocsave(ppc_object, shndx, | |
8132 | lsym.get_st_value() + reloc.get_r_addend()); | |
8133 | } | |
8134 | break; | |
8135 | ||
ec661b9d AM |
8136 | case elfcpp::R_PPC64_REL64: |
8137 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 8138 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 8139 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 8140 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 8141 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 8142 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
8143 | case elfcpp::R_PPC64_REL16_HIGH: |
8144 | case elfcpp::R_PPC64_REL16_HIGHA: | |
8145 | case elfcpp::R_PPC64_REL16_HIGHER: | |
8146 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
8147 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
8148 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 8149 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 8150 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 8151 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 8152 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
8153 | case elfcpp::R_PPC64_SECTOFF_DS: |
8154 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8155 | case elfcpp::R_POWERPC_TPREL16: | |
8156 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8157 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 8158 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
8159 | case elfcpp::R_PPC64_TPREL16_DS: |
8160 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8161 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8162 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8163 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 8164 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 8165 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 8166 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
8167 | case elfcpp::R_POWERPC_DTPREL16: |
8168 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8169 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8170 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
8171 | case elfcpp::R_PPC64_DTPREL16_DS: |
8172 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
8173 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8174 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8175 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8176 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8177 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8178 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
8179 | case elfcpp::R_PPC64_TLSGD: |
8180 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 8181 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
8182 | break; |
8183 | ||
e4dff765 | 8184 | case elfcpp::R_PPC64_GOT_PCREL34: |
42cacb20 DE |
8185 | case elfcpp::R_POWERPC_GOT16: |
8186 | case elfcpp::R_POWERPC_GOT16_LO: | |
8187 | case elfcpp::R_POWERPC_GOT16_HI: | |
8188 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
8189 | case elfcpp::R_PPC64_GOT16_DS: |
8190 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 8191 | { |
c9269dff | 8192 | // The symbol requires a GOT entry. |
dd93cd0a AM |
8193 | Output_data_got_powerpc<size, big_endian>* got |
8194 | = target->got_section(symtab, layout); | |
8195 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 8196 | |
e5d5f5ed | 8197 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 8198 | { |
b01a4b04 AM |
8199 | if (is_ifunc |
8200 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
8201 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
8202 | else | |
8203 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
8204 | } | |
8205 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
8206 | { | |
8207 | // If we are generating a shared object or a pie, this | |
8208 | // symbol's GOT entry will be set by a dynamic relocation. | |
8209 | unsigned int off; | |
8210 | off = got->add_constant(0); | |
8211 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 8212 | |
b3ccdeb5 AM |
8213 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
8214 | is_ifunc); | |
8215 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
8216 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 8217 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 8218 | got, off, 0, false); |
2e702c99 | 8219 | } |
42cacb20 DE |
8220 | } |
8221 | break; | |
8222 | ||
cf43a2fe AM |
8223 | case elfcpp::R_PPC64_TOC16: |
8224 | case elfcpp::R_PPC64_TOC16_LO: | |
8225 | case elfcpp::R_PPC64_TOC16_HI: | |
8226 | case elfcpp::R_PPC64_TOC16_HA: | |
8227 | case elfcpp::R_PPC64_TOC16_DS: | |
8228 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
8229 | // We need a GOT section. |
8230 | target->got_section(symtab, layout); | |
8231 | break; | |
8232 | ||
87c69f97 | 8233 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
dd93cd0a AM |
8234 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
8235 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8236 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8237 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8238 | { | |
0af4fcc2 AM |
8239 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
8240 | if (!ppc_object->no_tls_marker()) | |
8241 | tls_type = target->optimize_tls_gd(true); | |
dd93cd0a AM |
8242 | if (tls_type == tls::TLSOPT_NONE) |
8243 | { | |
8244 | Output_data_got_powerpc<size, big_endian>* got | |
8245 | = target->got_section(symtab, layout); | |
8246 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
8247 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8248 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
8249 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
8250 | } |
8251 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8252 | { | |
8253 | // no GOT relocs needed for Local Exec. | |
0af4fcc2 | 8254 | ppc_object->set_tls_marker(); |
dd93cd0a AM |
8255 | } |
8256 | else | |
8257 | gold_unreachable(); | |
8258 | } | |
42cacb20 DE |
8259 | break; |
8260 | ||
87c69f97 | 8261 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: |
dd93cd0a AM |
8262 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
8263 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8264 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8265 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8266 | { | |
0af4fcc2 AM |
8267 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
8268 | if (!ppc_object->no_tls_marker()) | |
8269 | tls_type = target->optimize_tls_ld(); | |
dd93cd0a AM |
8270 | if (tls_type == tls::TLSOPT_NONE) |
8271 | target->tlsld_got_offset(symtab, layout, object); | |
8272 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8273 | { | |
8274 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
8275 | if (parameters->options().emit_relocs()) |
8276 | { | |
8277 | Output_section* os = layout->tls_segment()->first_section(); | |
8278 | gold_assert(os != NULL); | |
8279 | os->set_needs_symtab_index(); | |
8280 | } | |
0af4fcc2 | 8281 | ppc_object->set_tls_marker(); |
dd93cd0a AM |
8282 | } |
8283 | else | |
8284 | gold_unreachable(); | |
8285 | } | |
42cacb20 | 8286 | break; |
42cacb20 | 8287 | |
87c69f97 | 8288 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: |
dd93cd0a AM |
8289 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
8290 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8291 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8292 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8293 | { | |
8294 | Output_data_got_powerpc<size, big_endian>* got | |
8295 | = target->got_section(symtab, layout); | |
8296 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 8297 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
8298 | } |
8299 | break; | |
42cacb20 | 8300 | |
87c69f97 | 8301 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: |
dd93cd0a AM |
8302 | case elfcpp::R_POWERPC_GOT_TPREL16: |
8303 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8304 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8305 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8306 | { | |
0af4fcc2 | 8307 | tls::Tls_optimization tls_type = target->optimize_tls_ie(true); |
dd93cd0a AM |
8308 | if (tls_type == tls::TLSOPT_NONE) |
8309 | { | |
dd93cd0a | 8310 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
8311 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
8312 | { | |
8313 | Output_data_got_powerpc<size, big_endian>* got | |
8314 | = target->got_section(symtab, layout); | |
8315 | unsigned int off = got->add_constant(0); | |
8316 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
8317 | ||
8318 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8319 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
8320 | elfcpp::R_POWERPC_TPREL, | |
8321 | got, off, 0); | |
8322 | } | |
dd93cd0a AM |
8323 | } |
8324 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8325 | { | |
8326 | // no GOT relocs needed for Local Exec. | |
8327 | } | |
8328 | else | |
8329 | gold_unreachable(); | |
8330 | } | |
8331 | break; | |
8332 | ||
8333 | default: | |
8334 | unsupported_reloc_local(object, r_type); | |
8335 | break; | |
8336 | } | |
d8f5a274 | 8337 | |
5edad15d AM |
8338 | if (size == 64 |
8339 | && parameters->options().toc_optimize()) | |
8340 | { | |
8341 | if (data_shndx == ppc_object->toc_shndx()) | |
8342 | { | |
8343 | bool ok = true; | |
8344 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
8345 | || (is_ifunc && target->abiversion() < 2)) | |
8346 | ok = false; | |
8347 | else if (parameters->options().output_is_position_independent()) | |
8348 | { | |
8349 | if (is_ifunc) | |
8350 | ok = false; | |
8351 | else | |
8352 | { | |
8353 | unsigned int shndx = lsym.get_st_shndx(); | |
8354 | if (shndx >= elfcpp::SHN_LORESERVE | |
8355 | && shndx != elfcpp::SHN_XINDEX) | |
8356 | ok = false; | |
8357 | } | |
8358 | } | |
8359 | if (!ok) | |
8360 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
8361 | } | |
8362 | ||
8363 | enum {no_check, check_lo, check_ha} insn_check; | |
8364 | switch (r_type) | |
8365 | { | |
8366 | default: | |
8367 | insn_check = no_check; | |
8368 | break; | |
8369 | ||
8370 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8371 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8372 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8373 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8374 | case elfcpp::R_POWERPC_GOT16_HA: | |
8375 | case elfcpp::R_PPC64_TOC16_HA: | |
8376 | insn_check = check_ha; | |
8377 | break; | |
8378 | ||
8379 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8380 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8381 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8382 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8383 | case elfcpp::R_POWERPC_GOT16_LO: | |
8384 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8385 | case elfcpp::R_PPC64_TOC16_LO: | |
8386 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8387 | insn_check = check_lo; | |
8388 | break; | |
8389 | } | |
8390 | ||
8391 | section_size_type slen; | |
8392 | const unsigned char* view = NULL; | |
8393 | if (insn_check != no_check) | |
8394 | { | |
8395 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8396 | section_size_type off = | |
8397 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8398 | if (off < slen) | |
8399 | { | |
8400 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8401 | if (insn_check == check_lo | |
8402 | ? !ok_lo_toc_insn(insn, r_type) | |
8403 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8404 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8405 | { | |
8406 | ppc_object->set_no_toc_opt(); | |
8407 | gold_warning(_("%s: toc optimization is not supported " | |
8408 | "for %#08x instruction"), | |
8409 | ppc_object->name().c_str(), insn); | |
8410 | } | |
8411 | } | |
8412 | } | |
8413 | ||
8414 | switch (r_type) | |
8415 | { | |
8416 | default: | |
8417 | break; | |
8418 | case elfcpp::R_PPC64_TOC16: | |
8419 | case elfcpp::R_PPC64_TOC16_LO: | |
8420 | case elfcpp::R_PPC64_TOC16_HI: | |
8421 | case elfcpp::R_PPC64_TOC16_HA: | |
8422 | case elfcpp::R_PPC64_TOC16_DS: | |
8423 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8424 | unsigned int shndx = lsym.get_st_shndx(); | |
8425 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8426 | bool is_ordinary; | |
8427 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8428 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
8429 | { | |
412294da | 8430 | Address dst_off = lsym.get_st_value() + reloc.get_r_addend(); |
5edad15d AM |
8431 | if (dst_off < ppc_object->section_size(shndx)) |
8432 | { | |
8433 | bool ok = false; | |
8434 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
8435 | ok = true; | |
8436 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
8437 | { | |
8438 | // Need to check that the insn is a ld | |
8439 | if (!view) | |
8440 | view = ppc_object->section_contents(data_shndx, | |
8441 | &slen, | |
8442 | false); | |
8443 | section_size_type off = | |
8444 | (convert_to_section_size_type(reloc.get_r_offset()) | |
8445 | + (big_endian ? -2 : 3)); | |
8446 | if (off < slen | |
8447 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
8448 | ok = true; | |
8449 | } | |
8450 | if (!ok) | |
8451 | ppc_object->set_no_toc_opt(dst_off); | |
8452 | } | |
8453 | } | |
8454 | break; | |
8455 | } | |
8456 | } | |
8457 | ||
f159cdb6 AM |
8458 | if (size == 32) |
8459 | { | |
8460 | switch (r_type) | |
8461 | { | |
8462 | case elfcpp::R_POWERPC_REL32: | |
8463 | if (ppc_object->got2_shndx() != 0 | |
8464 | && parameters->options().output_is_position_independent()) | |
8465 | { | |
8466 | unsigned int shndx = lsym.get_st_shndx(); | |
8467 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8468 | bool is_ordinary; | |
8469 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8470 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
8471 | && (ppc_object->section_flags(data_shndx) | |
8472 | & elfcpp::SHF_EXECINSTR) != 0) | |
8473 | gold_error(_("%s: unsupported -mbss-plt code"), | |
8474 | ppc_object->name().c_str()); | |
8475 | } | |
8476 | break; | |
8477 | default: | |
8478 | break; | |
8479 | } | |
8480 | } | |
8481 | ||
d8f5a274 AM |
8482 | switch (r_type) |
8483 | { | |
8484 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
8485 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8486 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8487 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8488 | case elfcpp::R_POWERPC_GOT16: | |
8489 | case elfcpp::R_PPC64_GOT16_DS: | |
8490 | case elfcpp::R_PPC64_TOC16: | |
8491 | case elfcpp::R_PPC64_TOC16_DS: | |
8492 | ppc_object->set_has_small_toc_reloc(); | |
89c52ae3 AM |
8493 | break; |
8494 | default: | |
8495 | break; | |
8496 | } | |
8497 | ||
8498 | switch (r_type) | |
8499 | { | |
89c52ae3 AM |
8500 | case elfcpp::R_PPC64_TPREL16_DS: |
8501 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8502 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8503 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8504 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8505 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8506 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8507 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8508 | case elfcpp::R_PPC64_TPREL34: | |
252dcdf4 AM |
8509 | if (size != 64) |
8510 | break; | |
8511 | // Fall through. | |
8512 | case elfcpp::R_POWERPC_TPREL16: | |
8513 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8514 | case elfcpp::R_POWERPC_TPREL16_HI: | |
8515 | case elfcpp::R_POWERPC_TPREL16_HA: | |
89c52ae3 AM |
8516 | layout->set_has_static_tls(); |
8517 | break; | |
8518 | default: | |
8519 | break; | |
8520 | } | |
8521 | ||
252dcdf4 AM |
8522 | switch (r_type) |
8523 | { | |
8524 | case elfcpp::R_POWERPC_TPREL16_HA: | |
8525 | if (target->tprel_opt()) | |
8526 | { | |
8527 | section_size_type slen; | |
8528 | const unsigned char* view = NULL; | |
8529 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8530 | section_size_type off | |
8531 | = convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8532 | if (off < slen) | |
8533 | { | |
8534 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8535 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8536 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
4e0e019f | 8537 | target->set_no_tprel_opt(); |
252dcdf4 AM |
8538 | } |
8539 | } | |
8540 | break; | |
8541 | ||
8542 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8543 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8544 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8545 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8546 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8547 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8548 | if (size != 64) | |
8549 | break; | |
8550 | // Fall through. | |
8551 | case elfcpp::R_POWERPC_TPREL16_HI: | |
4e0e019f | 8552 | target->set_no_tprel_opt(); |
252dcdf4 AM |
8553 | break; |
8554 | default: | |
8555 | break; | |
8556 | } | |
8557 | ||
89c52ae3 AM |
8558 | switch (r_type) |
8559 | { | |
8560 | case elfcpp::R_PPC64_D34: | |
8561 | case elfcpp::R_PPC64_D34_LO: | |
8562 | case elfcpp::R_PPC64_D34_HI30: | |
8563 | case elfcpp::R_PPC64_D34_HA30: | |
8564 | case elfcpp::R_PPC64_D28: | |
8565 | case elfcpp::R_PPC64_PCREL34: | |
8566 | case elfcpp::R_PPC64_PCREL28: | |
8567 | case elfcpp::R_PPC64_TPREL34: | |
8568 | case elfcpp::R_PPC64_DTPREL34: | |
8569 | case elfcpp::R_PPC64_PLT_PCREL34: | |
8570 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
8571 | case elfcpp::R_PPC64_GOT_PCREL34: | |
87c69f97 AM |
8572 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
8573 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
8574 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
8575 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
63e5eea2 | 8576 | target->set_power10_relocs(); |
89c52ae3 | 8577 | break; |
d8f5a274 AM |
8578 | default: |
8579 | break; | |
8580 | } | |
dd93cd0a AM |
8581 | } |
8582 | ||
8583 | // Report an unsupported relocation against a global symbol. | |
8584 | ||
8585 | template<int size, bool big_endian> | |
8586 | void | |
8587 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
8588 | Sized_relobj_file<size, big_endian>* object, | |
8589 | unsigned int r_type, | |
8590 | Symbol* gsym) | |
8591 | { | |
42cacb20 DE |
8592 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
8593 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
8594 | } | |
8595 | ||
8596 | // Scan a relocation for a global symbol. | |
8597 | ||
8598 | template<int size, bool big_endian> | |
8599 | inline void | |
8600 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
8601 | Symbol_table* symtab, |
8602 | Layout* layout, | |
8603 | Target_powerpc<size, big_endian>* target, | |
8604 | Sized_relobj_file<size, big_endian>* object, | |
8605 | unsigned int data_shndx, | |
8606 | Output_section* output_section, | |
8607 | const elfcpp::Rela<size, big_endian>& reloc, | |
8608 | unsigned int r_type, | |
8609 | Symbol* gsym) | |
42cacb20 | 8610 | { |
0af4fcc2 AM |
8611 | Powerpc_relobj<size, big_endian>* ppc_object |
8612 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
8613 | ||
8614 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) | |
8615 | { | |
8616 | case Track_tls::NOT_EXPECTED: | |
8617 | ppc_object->set_no_tls_marker(); | |
8618 | break; | |
8619 | case Track_tls::SKIP: | |
8620 | return; | |
8621 | default: | |
8622 | break; | |
8623 | } | |
e3deeb9c | 8624 | |
34e0882b AM |
8625 | if (target->replace_tls_get_addr(gsym)) |
8626 | // Change a __tls_get_addr reference to __tls_get_addr_opt | |
8627 | // so dynamic relocs are emitted against the latter symbol. | |
8628 | gsym = target->tls_get_addr_opt(); | |
8629 | ||
e3deeb9c AM |
8630 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) |
8631 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8632 | { | |
8633 | this->expect_tls_get_addr_call(); | |
0af4fcc2 AM |
8634 | if (!ppc_object->no_tls_marker()) |
8635 | { | |
8636 | bool final = gsym->final_value_is_known(); | |
8637 | tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8638 | if (tls_type != tls::TLSOPT_NONE) | |
8639 | { | |
8640 | this->skip_next_tls_get_addr_call(); | |
8641 | ppc_object->set_tls_marker(); | |
8642 | } | |
8643 | } | |
e3deeb9c AM |
8644 | } |
8645 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8646 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8647 | { | |
8648 | this->expect_tls_get_addr_call(); | |
0af4fcc2 AM |
8649 | if (!ppc_object->no_tls_marker()) |
8650 | { | |
8651 | tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8652 | if (tls_type != tls::TLSOPT_NONE) | |
8653 | { | |
8654 | this->skip_next_tls_get_addr_call(); | |
8655 | ppc_object->set_tls_marker(); | |
8656 | } | |
8657 | } | |
e3deeb9c AM |
8658 | } |
8659 | ||
e5d5f5ed | 8660 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 8661 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
8662 | bool pushed_ifunc = false; |
8663 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 8664 | { |
0e123f69 | 8665 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 8666 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8667 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 8668 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 8669 | pushed_ifunc = true; |
ec661b9d | 8670 | } |
e5d5f5ed | 8671 | |
42cacb20 DE |
8672 | switch (r_type) |
8673 | { | |
8674 | case elfcpp::R_POWERPC_NONE: | |
8675 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
8676 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 8677 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 8678 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 8679 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
8680 | case elfcpp::R_POWERPC_PLTSEQ: |
8681 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
8682 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
8683 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
8684 | case elfcpp::R_PPC64_PCREL_OPT: |
8685 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
8686 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
8687 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
8688 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
8689 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
8690 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
8691 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
8692 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
e4dff765 AM |
8693 | case elfcpp::R_PPC64_D34: |
8694 | case elfcpp::R_PPC64_D34_LO: | |
8695 | case elfcpp::R_PPC64_D34_HI30: | |
8696 | case elfcpp::R_PPC64_D34_HA30: | |
8697 | case elfcpp::R_PPC64_D28: | |
8698 | case elfcpp::R_PPC64_PCREL34: | |
8699 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
8700 | case elfcpp::R_PPC64_TPREL34: |
8701 | case elfcpp::R_PPC64_DTPREL34: | |
dd93cd0a AM |
8702 | break; |
8703 | ||
8704 | case elfcpp::R_PPC64_TOC: | |
8705 | { | |
8706 | Output_data_got_powerpc<size, big_endian>* got | |
8707 | = target->got_section(symtab, layout); | |
8708 | if (parameters->options().output_is_position_independent()) | |
8709 | { | |
bfdfa4cd AM |
8710 | Address off = reloc.get_r_offset(); |
8711 | if (size == 64 | |
8712 | && data_shndx == ppc_object->opd_shndx() | |
8713 | && ppc_object->get_opd_discard(off - 8)) | |
8714 | break; | |
8715 | ||
dd93cd0a AM |
8716 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8717 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
8718 | if (data_shndx != ppc_object->opd_shndx()) | |
8719 | symobj = static_cast | |
8720 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8721 | rela_dyn->add_output_section_relative(got->output_section(), | |
8722 | elfcpp::R_POWERPC_RELATIVE, | |
8723 | output_section, | |
bfdfa4cd | 8724 | object, data_shndx, off, |
dd93cd0a AM |
8725 | symobj->toc_base_offset()); |
8726 | } | |
8727 | } | |
42cacb20 DE |
8728 | break; |
8729 | ||
c9269dff | 8730 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 8731 | if (size == 64 |
9055360d | 8732 | && target->abiversion() < 2 |
bfdfa4cd AM |
8733 | && data_shndx == ppc_object->opd_shndx() |
8734 | && (gsym->is_defined_in_discarded_section() | |
8735 | || gsym->object() != object)) | |
8736 | { | |
8737 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
8738 | break; | |
8739 | } | |
d8e90251 | 8740 | // Fall through. |
dd93cd0a | 8741 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 8742 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
8743 | case elfcpp::R_POWERPC_UADDR32: |
8744 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
8745 | case elfcpp::R_POWERPC_ADDR16: |
8746 | case elfcpp::R_POWERPC_ADDR16_LO: | |
8747 | case elfcpp::R_POWERPC_ADDR16_HI: | |
8748 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 8749 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
8750 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8751 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
8752 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
8753 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
8754 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
8755 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
8756 | case elfcpp::R_PPC64_ADDR16_DS: | |
8757 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
8758 | case elfcpp::R_POWERPC_ADDR14: | |
8759 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8760 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 8761 | { |
c9269dff AM |
8762 | // Make a PLT entry if necessary. |
8763 | if (gsym->needs_plt_entry()) | |
8764 | { | |
9055360d AM |
8765 | // Since this is not a PC-relative relocation, we may be |
8766 | // taking the address of a function. In that case we need to | |
8767 | // set the entry in the dynamic symbol table to the address of | |
8768 | // the PLT call stub. | |
8769 | bool need_ifunc_plt = false; | |
8770 | if ((size == 32 || target->abiversion() >= 2) | |
8771 | && gsym->is_from_dynobj() | |
8772 | && !parameters->options().output_is_position_independent()) | |
8773 | { | |
8774 | gsym->set_needs_dynsym_value(); | |
8775 | need_ifunc_plt = true; | |
8776 | } | |
8777 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 8778 | { |
0e123f69 | 8779 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8780 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 8781 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
8782 | reloc.get_r_addend()); |
8783 | target->make_plt_entry(symtab, layout, gsym); | |
8784 | } | |
c9269dff AM |
8785 | } |
8786 | // Make a dynamic relocation if necessary. | |
88b8e639 | 8787 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 8788 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 8789 | { |
a82bef93 ST |
8790 | if (!parameters->options().output_is_position_independent() |
8791 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
8792 | { |
8793 | target->copy_reloc(symtab, layout, object, | |
8794 | data_shndx, output_section, gsym, reloc); | |
8795 | } | |
9055360d AM |
8796 | else if ((((size == 32 |
8797 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
8798 | || (size == 64 | |
8799 | && r_type == elfcpp::R_PPC64_ADDR64 | |
8800 | && target->abiversion() >= 2)) | |
627b30b7 AM |
8801 | && gsym->can_use_relative_reloc(false) |
8802 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
8803 | && parameters->options().shared())) | |
8804 | || (size == 64 | |
8805 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 8806 | && target->abiversion() < 2 |
627b30b7 AM |
8807 | && (gsym->can_use_relative_reloc(false) |
8808 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 8809 | { |
b3ccdeb5 AM |
8810 | Reloc_section* rela_dyn |
8811 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
8812 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
8813 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
8814 | rela_dyn->add_symbolless_global_addend( |
8815 | gsym, dynrel, output_section, object, data_shndx, | |
8816 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
8817 | } |
8818 | else | |
8819 | { | |
b3ccdeb5 AM |
8820 | Reloc_section* rela_dyn |
8821 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 8822 | check_non_pic(object, r_type); |
dd93cd0a AM |
8823 | rela_dyn->add_global(gsym, r_type, output_section, |
8824 | object, data_shndx, | |
8825 | reloc.get_r_offset(), | |
8826 | reloc.get_r_addend()); | |
5edad15d AM |
8827 | |
8828 | if (size == 64 | |
8829 | && parameters->options().toc_optimize() | |
8830 | && data_shndx == ppc_object->toc_shndx()) | |
8831 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
8832 | } |
8833 | } | |
42cacb20 DE |
8834 | } |
8835 | break; | |
8836 | ||
e4dff765 AM |
8837 | case elfcpp::R_PPC64_PLT_PCREL34: |
8838 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
08be3224 AM |
8839 | case elfcpp::R_POWERPC_PLT16_LO: |
8840 | case elfcpp::R_POWERPC_PLT16_HI: | |
8841 | case elfcpp::R_POWERPC_PLT16_HA: | |
8842 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8843 | if (!pushed_ifunc) | |
8844 | target->make_plt_entry(symtab, layout, gsym); | |
8845 | break; | |
8846 | ||
32f59844 AM |
8847 | case elfcpp::R_PPC64_REL24_NOTOC: |
8848 | if (size == 32) | |
8849 | break; | |
8850 | // Fall through. | |
cf43a2fe | 8851 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 8852 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
8853 | if (!is_ifunc) |
8854 | { | |
0e123f69 | 8855 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8856 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8857 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
8858 | if (gsym->needs_plt_entry() |
8859 | || (!gsym->final_value_is_known() | |
8860 | && (gsym->is_undefined() | |
8861 | || gsym->is_from_dynobj() | |
8862 | || gsym->is_preemptible()))) | |
8863 | target->make_plt_entry(symtab, layout, gsym); | |
8864 | } | |
d8e90251 | 8865 | // Fall through. |
42cacb20 | 8866 | |
3ea0a085 | 8867 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 8868 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 8869 | // Make a dynamic relocation if necessary. |
88b8e639 | 8870 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 8871 | { |
a82bef93 ST |
8872 | if (!parameters->options().output_is_position_independent() |
8873 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
8874 | { |
8875 | target->copy_reloc(symtab, layout, object, | |
8876 | data_shndx, output_section, gsym, | |
8877 | reloc); | |
8878 | } | |
8879 | else | |
8880 | { | |
b3ccdeb5 AM |
8881 | Reloc_section* rela_dyn |
8882 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
8883 | check_non_pic(object, r_type); |
8884 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
8885 | data_shndx, reloc.get_r_offset(), | |
8886 | reloc.get_r_addend()); | |
8887 | } | |
8888 | } | |
8889 | break; | |
8890 | ||
ec661b9d AM |
8891 | case elfcpp::R_POWERPC_REL14: |
8892 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8893 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 8894 | if (!is_ifunc) |
0e123f69 AM |
8895 | { |
8896 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8897 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
8898 | r_type, r_sym, reloc.get_r_addend()); | |
8899 | } | |
ec661b9d AM |
8900 | break; |
8901 | ||
7e57d19e AM |
8902 | case elfcpp::R_PPC64_TOCSAVE: |
8903 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
8904 | // caller has already saved r2 and thus a plt call stub need not | |
8905 | // save r2. | |
8906 | if (size == 64 | |
8907 | && target->mark_pltcall(ppc_object, data_shndx, | |
8908 | reloc.get_r_offset() - 4, symtab)) | |
8909 | { | |
8910 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8911 | bool is_ordinary; | |
8912 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
8913 | if (!is_ordinary) | |
8914 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
8915 | r_sym, shndx); | |
8916 | else | |
8917 | { | |
8918 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
8919 | target->add_tocsave(ppc_object, shndx, | |
8920 | sym->value() + reloc.get_r_addend()); | |
8921 | } | |
8922 | } | |
8923 | break; | |
8924 | ||
6ce78956 AM |
8925 | case elfcpp::R_POWERPC_REL16: |
8926 | case elfcpp::R_POWERPC_REL16_LO: | |
8927 | case elfcpp::R_POWERPC_REL16_HI: | |
8928 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 8929 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
8930 | case elfcpp::R_PPC64_REL16_HIGH: |
8931 | case elfcpp::R_PPC64_REL16_HIGHA: | |
8932 | case elfcpp::R_PPC64_REL16_HIGHER: | |
8933 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
8934 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
8935 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 8936 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 8937 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 8938 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 8939 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
8940 | case elfcpp::R_PPC64_SECTOFF_DS: |
8941 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8942 | case elfcpp::R_POWERPC_TPREL16: | |
8943 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8944 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 8945 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
8946 | case elfcpp::R_PPC64_TPREL16_DS: |
8947 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8948 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8949 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8950 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 8951 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 8952 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 8953 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
8954 | case elfcpp::R_POWERPC_DTPREL16: |
8955 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8956 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8957 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
8958 | case elfcpp::R_PPC64_DTPREL16_DS: |
8959 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
8960 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8961 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8962 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8963 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8964 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8965 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
8966 | case elfcpp::R_PPC64_TLSGD: |
8967 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 8968 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
8969 | break; |
8970 | ||
e4dff765 | 8971 | case elfcpp::R_PPC64_GOT_PCREL34: |
42cacb20 DE |
8972 | case elfcpp::R_POWERPC_GOT16: |
8973 | case elfcpp::R_POWERPC_GOT16_LO: | |
8974 | case elfcpp::R_POWERPC_GOT16_HI: | |
8975 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
8976 | case elfcpp::R_PPC64_GOT16_DS: |
8977 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 8978 | { |
c9269dff AM |
8979 | // The symbol requires a GOT entry. |
8980 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
8981 | |
8982 | got = target->got_section(symtab, layout); | |
2e702c99 | 8983 | if (gsym->final_value_is_known()) |
2e702c99 | 8984 | { |
b01a4b04 AM |
8985 | if (is_ifunc |
8986 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
8987 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
8988 | else | |
8989 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
8990 | } | |
8991 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
8992 | { | |
8993 | // If we are generating a shared object or a pie, this | |
8994 | // symbol's GOT entry will be set by a dynamic relocation. | |
8995 | unsigned int off = got->add_constant(0); | |
8996 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
8997 | ||
b3ccdeb5 AM |
8998 | Reloc_section* rela_dyn |
8999 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
9000 | ||
e5d5f5ed | 9001 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
9002 | && !((size == 32 |
9003 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
9004 | && gsym->visibility() == elfcpp::STV_PROTECTED |
9005 | && parameters->options().shared())) | |
2e702c99 | 9006 | { |
b3ccdeb5 AM |
9007 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
9008 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
9009 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
9010 | } | |
9011 | else | |
9012 | { | |
9013 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
9014 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 9015 | } |
2e702c99 | 9016 | } |
42cacb20 DE |
9017 | } |
9018 | break; | |
9019 | ||
cf43a2fe AM |
9020 | case elfcpp::R_PPC64_TOC16: |
9021 | case elfcpp::R_PPC64_TOC16_LO: | |
9022 | case elfcpp::R_PPC64_TOC16_HI: | |
9023 | case elfcpp::R_PPC64_TOC16_HA: | |
9024 | case elfcpp::R_PPC64_TOC16_DS: | |
9025 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
9026 | // We need a GOT section. |
9027 | target->got_section(symtab, layout); | |
9028 | break; | |
9029 | ||
87c69f97 | 9030 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
dd93cd0a AM |
9031 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
9032 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9033 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
9034 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9035 | { | |
0af4fcc2 AM |
9036 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
9037 | if (!ppc_object->no_tls_marker()) | |
9038 | { | |
9039 | bool final = gsym->final_value_is_known(); | |
9040 | tls_type = target->optimize_tls_gd(final); | |
9041 | } | |
dd93cd0a AM |
9042 | if (tls_type == tls::TLSOPT_NONE) |
9043 | { | |
9044 | Output_data_got_powerpc<size, big_endian>* got | |
9045 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
9046 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
9047 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
9048 | elfcpp::R_POWERPC_DTPMOD, |
9049 | elfcpp::R_POWERPC_DTPREL); | |
9050 | } | |
9051 | else if (tls_type == tls::TLSOPT_TO_IE) | |
9052 | { | |
acc276d8 AM |
9053 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
9054 | { | |
9055 | Output_data_got_powerpc<size, big_endian>* got | |
9056 | = target->got_section(symtab, layout); | |
9057 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
9058 | if (gsym->is_undefined() | |
9059 | || gsym->is_from_dynobj()) | |
9060 | { | |
9061 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
9062 | elfcpp::R_POWERPC_TPREL); | |
9063 | } | |
9064 | else | |
9065 | { | |
9066 | unsigned int off = got->add_constant(0); | |
9067 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
9068 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
9069 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
9070 | got, off, 0); | |
9071 | } | |
9072 | } | |
0af4fcc2 | 9073 | ppc_object->set_tls_marker(); |
dd93cd0a AM |
9074 | } |
9075 | else if (tls_type == tls::TLSOPT_TO_LE) | |
9076 | { | |
9077 | // no GOT relocs needed for Local Exec. | |
0af4fcc2 | 9078 | ppc_object->set_tls_marker(); |
dd93cd0a AM |
9079 | } |
9080 | else | |
9081 | gold_unreachable(); | |
9082 | } | |
42cacb20 DE |
9083 | break; |
9084 | ||
87c69f97 | 9085 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: |
dd93cd0a AM |
9086 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
9087 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
9088 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
9089 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9090 | { | |
0af4fcc2 AM |
9091 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
9092 | if (!ppc_object->no_tls_marker()) | |
9093 | tls_type = target->optimize_tls_ld(); | |
dd93cd0a AM |
9094 | if (tls_type == tls::TLSOPT_NONE) |
9095 | target->tlsld_got_offset(symtab, layout, object); | |
9096 | else if (tls_type == tls::TLSOPT_TO_LE) | |
9097 | { | |
9098 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
9099 | if (parameters->options().emit_relocs()) |
9100 | { | |
9101 | Output_section* os = layout->tls_segment()->first_section(); | |
9102 | gold_assert(os != NULL); | |
9103 | os->set_needs_symtab_index(); | |
9104 | } | |
0af4fcc2 | 9105 | ppc_object->set_tls_marker(); |
dd93cd0a AM |
9106 | } |
9107 | else | |
9108 | gold_unreachable(); | |
9109 | } | |
9110 | break; | |
9111 | ||
87c69f97 | 9112 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: |
dd93cd0a AM |
9113 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
9114 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9115 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
9116 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9117 | { | |
9118 | Output_data_got_powerpc<size, big_endian>* got | |
9119 | = target->got_section(symtab, layout); | |
bd73a62d AM |
9120 | if (!gsym->final_value_is_known() |
9121 | && (gsym->is_from_dynobj() | |
9122 | || gsym->is_undefined() | |
9123 | || gsym->is_preemptible())) | |
9124 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
9125 | target->rela_dyn_section(layout), | |
9126 | elfcpp::R_POWERPC_DTPREL); | |
9127 | else | |
9128 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
9129 | } |
9130 | break; | |
9131 | ||
87c69f97 | 9132 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: |
dd93cd0a AM |
9133 | case elfcpp::R_POWERPC_GOT_TPREL16: |
9134 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9135 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
9136 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9137 | { | |
0af4fcc2 AM |
9138 | bool final = gsym->final_value_is_known(); |
9139 | tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
dd93cd0a AM |
9140 | if (tls_type == tls::TLSOPT_NONE) |
9141 | { | |
acc276d8 AM |
9142 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
9143 | { | |
9144 | Output_data_got_powerpc<size, big_endian>* got | |
9145 | = target->got_section(symtab, layout); | |
9146 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
9147 | if (gsym->is_undefined() | |
9148 | || gsym->is_from_dynobj()) | |
9149 | { | |
9150 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
9151 | elfcpp::R_POWERPC_TPREL); | |
9152 | } | |
9153 | else | |
9154 | { | |
9155 | unsigned int off = got->add_constant(0); | |
9156 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
9157 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
9158 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
9159 | got, off, 0); | |
9160 | } | |
9161 | } | |
dd93cd0a AM |
9162 | } |
9163 | else if (tls_type == tls::TLSOPT_TO_LE) | |
9164 | { | |
9165 | // no GOT relocs needed for Local Exec. | |
9166 | } | |
9167 | else | |
9168 | gold_unreachable(); | |
9169 | } | |
42cacb20 DE |
9170 | break; |
9171 | ||
9172 | default: | |
9173 | unsupported_reloc_global(object, r_type, gsym); | |
9174 | break; | |
9175 | } | |
d8f5a274 | 9176 | |
5edad15d AM |
9177 | if (size == 64 |
9178 | && parameters->options().toc_optimize()) | |
9179 | { | |
9180 | if (data_shndx == ppc_object->toc_shndx()) | |
9181 | { | |
9182 | bool ok = true; | |
9183 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
9184 | || (is_ifunc && target->abiversion() < 2)) | |
9185 | ok = false; | |
9186 | else if (parameters->options().output_is_position_independent() | |
9187 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
9188 | ok = false; | |
9189 | if (!ok) | |
9190 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
9191 | } | |
9192 | ||
9193 | enum {no_check, check_lo, check_ha} insn_check; | |
9194 | switch (r_type) | |
9195 | { | |
9196 | default: | |
9197 | insn_check = no_check; | |
9198 | break; | |
9199 | ||
9200 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
9201 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
9202 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
9203 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
9204 | case elfcpp::R_POWERPC_GOT16_HA: | |
9205 | case elfcpp::R_PPC64_TOC16_HA: | |
9206 | insn_check = check_ha; | |
9207 | break; | |
9208 | ||
9209 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
9210 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
9211 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
9212 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
9213 | case elfcpp::R_POWERPC_GOT16_LO: | |
9214 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
9215 | case elfcpp::R_PPC64_TOC16_LO: | |
9216 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
9217 | insn_check = check_lo; | |
9218 | break; | |
9219 | } | |
9220 | ||
9221 | section_size_type slen; | |
9222 | const unsigned char* view = NULL; | |
9223 | if (insn_check != no_check) | |
9224 | { | |
9225 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
9226 | section_size_type off = | |
9227 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
9228 | if (off < slen) | |
9229 | { | |
9230 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
9231 | if (insn_check == check_lo | |
9232 | ? !ok_lo_toc_insn(insn, r_type) | |
9233 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
9234 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9235 | { | |
9236 | ppc_object->set_no_toc_opt(); | |
9237 | gold_warning(_("%s: toc optimization is not supported " | |
9238 | "for %#08x instruction"), | |
9239 | ppc_object->name().c_str(), insn); | |
9240 | } | |
9241 | } | |
9242 | } | |
9243 | ||
9244 | switch (r_type) | |
9245 | { | |
9246 | default: | |
9247 | break; | |
9248 | case elfcpp::R_PPC64_TOC16: | |
9249 | case elfcpp::R_PPC64_TOC16_LO: | |
9250 | case elfcpp::R_PPC64_TOC16_HI: | |
9251 | case elfcpp::R_PPC64_TOC16_HA: | |
9252 | case elfcpp::R_PPC64_TOC16_DS: | |
9253 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
9254 | if (gsym->source() == Symbol::FROM_OBJECT | |
9255 | && !gsym->object()->is_dynamic()) | |
9256 | { | |
9257 | Powerpc_relobj<size, big_endian>* sym_object | |
9258 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
9259 | bool is_ordinary; | |
9260 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
9261 | if (shndx == sym_object->toc_shndx()) | |
9262 | { | |
9263 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
412294da | 9264 | Address dst_off = sym->value() + reloc.get_r_addend(); |
5edad15d AM |
9265 | if (dst_off < sym_object->section_size(shndx)) |
9266 | { | |
9267 | bool ok = false; | |
9268 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
9269 | ok = true; | |
9270 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
9271 | { | |
9272 | // Need to check that the insn is a ld | |
9273 | if (!view) | |
9274 | view = ppc_object->section_contents(data_shndx, | |
9275 | &slen, | |
9276 | false); | |
9277 | section_size_type off = | |
9278 | (convert_to_section_size_type(reloc.get_r_offset()) | |
9279 | + (big_endian ? -2 : 3)); | |
9280 | if (off < slen | |
9281 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
9282 | ok = true; | |
9283 | } | |
9284 | if (!ok) | |
9285 | sym_object->set_no_toc_opt(dst_off); | |
9286 | } | |
9287 | } | |
9288 | } | |
9289 | break; | |
9290 | } | |
9291 | } | |
9292 | ||
f159cdb6 AM |
9293 | if (size == 32) |
9294 | { | |
9295 | switch (r_type) | |
9296 | { | |
9297 | case elfcpp::R_PPC_LOCAL24PC: | |
9298 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
9299 | gold_error(_("%s: unsupported -mbss-plt code"), | |
9300 | ppc_object->name().c_str()); | |
9301 | break; | |
9302 | default: | |
9303 | break; | |
9304 | } | |
9305 | } | |
9306 | ||
d8f5a274 AM |
9307 | switch (r_type) |
9308 | { | |
9309 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
9310 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
9311 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
9312 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
9313 | case elfcpp::R_POWERPC_GOT16: | |
9314 | case elfcpp::R_PPC64_GOT16_DS: | |
9315 | case elfcpp::R_PPC64_TOC16: | |
9316 | case elfcpp::R_PPC64_TOC16_DS: | |
9317 | ppc_object->set_has_small_toc_reloc(); | |
89c52ae3 AM |
9318 | break; |
9319 | default: | |
9320 | break; | |
9321 | } | |
9322 | ||
9323 | switch (r_type) | |
9324 | { | |
89c52ae3 AM |
9325 | case elfcpp::R_PPC64_TPREL16_DS: |
9326 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
9327 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9328 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9329 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9330 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9331 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9332 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9333 | case elfcpp::R_PPC64_TPREL34: | |
252dcdf4 AM |
9334 | if (size != 64) |
9335 | break; | |
9336 | // Fall through. | |
9337 | case elfcpp::R_POWERPC_TPREL16: | |
9338 | case elfcpp::R_POWERPC_TPREL16_LO: | |
9339 | case elfcpp::R_POWERPC_TPREL16_HI: | |
9340 | case elfcpp::R_POWERPC_TPREL16_HA: | |
89c52ae3 AM |
9341 | layout->set_has_static_tls(); |
9342 | break; | |
9343 | default: | |
9344 | break; | |
9345 | } | |
9346 | ||
252dcdf4 AM |
9347 | switch (r_type) |
9348 | { | |
9349 | case elfcpp::R_POWERPC_TPREL16_HA: | |
9350 | if (target->tprel_opt()) | |
9351 | { | |
9352 | section_size_type slen; | |
9353 | const unsigned char* view = NULL; | |
9354 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
9355 | section_size_type off | |
9356 | = convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
9357 | if (off < slen) | |
9358 | { | |
9359 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
9360 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
9361 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
4e0e019f | 9362 | target->set_no_tprel_opt(); |
252dcdf4 AM |
9363 | } |
9364 | } | |
9365 | break; | |
9366 | ||
9367 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
9368 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
9369 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
9370 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
9371 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
9372 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
9373 | if (size != 64) | |
9374 | break; | |
9375 | // Fall through. | |
9376 | case elfcpp::R_POWERPC_TPREL16_HI: | |
4e0e019f | 9377 | target->set_no_tprel_opt(); |
252dcdf4 AM |
9378 | break; |
9379 | default: | |
9380 | break; | |
9381 | } | |
9382 | ||
89c52ae3 AM |
9383 | switch (r_type) |
9384 | { | |
9385 | case elfcpp::R_PPC64_D34: | |
9386 | case elfcpp::R_PPC64_D34_LO: | |
9387 | case elfcpp::R_PPC64_D34_HI30: | |
9388 | case elfcpp::R_PPC64_D34_HA30: | |
9389 | case elfcpp::R_PPC64_D28: | |
9390 | case elfcpp::R_PPC64_PCREL34: | |
9391 | case elfcpp::R_PPC64_PCREL28: | |
9392 | case elfcpp::R_PPC64_TPREL34: | |
9393 | case elfcpp::R_PPC64_DTPREL34: | |
9394 | case elfcpp::R_PPC64_PLT_PCREL34: | |
9395 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
9396 | case elfcpp::R_PPC64_GOT_PCREL34: | |
87c69f97 AM |
9397 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
9398 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
9399 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
9400 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
63e5eea2 | 9401 | target->set_power10_relocs(); |
89c52ae3 | 9402 | break; |
d8f5a274 AM |
9403 | default: |
9404 | break; | |
9405 | } | |
42cacb20 DE |
9406 | } |
9407 | ||
6d03d481 ST |
9408 | // Process relocations for gc. |
9409 | ||
9410 | template<int size, bool big_endian> | |
9411 | void | |
9412 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
9413 | Symbol_table* symtab, |
9414 | Layout* layout, | |
9415 | Sized_relobj_file<size, big_endian>* object, | |
9416 | unsigned int data_shndx, | |
9417 | unsigned int, | |
9418 | const unsigned char* prelocs, | |
9419 | size_t reloc_count, | |
9420 | Output_section* output_section, | |
9421 | bool needs_special_offset_handling, | |
9422 | size_t local_symbol_count, | |
9423 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
9424 | { |
9425 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
9426 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9427 | Classify_reloc; | |
9428 | ||
e81fea4d AM |
9429 | Powerpc_relobj<size, big_endian>* ppc_object |
9430 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
9431 | if (size == 64) | |
9432 | ppc_object->set_opd_valid(); | |
9433 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
9434 | { | |
9435 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
9436 | for (p = ppc_object->access_from_map()->begin(); | |
9437 | p != ppc_object->access_from_map()->end(); | |
9438 | ++p) | |
9439 | { | |
9440 | Address dst_off = p->first; | |
9441 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
9442 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
9443 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
9444 | { | |
efc6fa12 | 9445 | Relobj* src_obj = s->first; |
e81fea4d AM |
9446 | unsigned int src_indx = s->second; |
9447 | symtab->gc()->add_reference(src_obj, src_indx, | |
9448 | ppc_object, dst_indx); | |
9449 | } | |
9450 | p->second.clear(); | |
9451 | } | |
9452 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 9453 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
9454 | // Don't look at .opd relocs as .opd will reference everything. |
9455 | return; | |
9456 | } | |
6d03d481 | 9457 | |
4d625b70 | 9458 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
9459 | symtab, |
9460 | layout, | |
9461 | this, | |
9462 | object, | |
9463 | data_shndx, | |
9464 | prelocs, | |
9465 | reloc_count, | |
9466 | output_section, | |
9467 | needs_special_offset_handling, | |
9468 | local_symbol_count, | |
9469 | plocal_symbols); | |
9470 | } | |
9471 | ||
e81fea4d AM |
9472 | // Handle target specific gc actions when adding a gc reference from |
9473 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
9474 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
9475 | // section of a function descriptor. | |
9476 | ||
9477 | template<int size, bool big_endian> | |
9478 | void | |
9479 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
9480 | Symbol_table* symtab, | |
efc6fa12 | 9481 | Relobj* src_obj, |
e81fea4d | 9482 | unsigned int src_shndx, |
efc6fa12 | 9483 | Relobj* dst_obj, |
e81fea4d AM |
9484 | unsigned int dst_shndx, |
9485 | Address dst_off) const | |
9486 | { | |
6c77229c AM |
9487 | if (size != 64 || dst_obj->is_dynamic()) |
9488 | return; | |
9489 | ||
e81fea4d AM |
9490 | Powerpc_relobj<size, big_endian>* ppc_object |
9491 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 9492 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
9493 | { |
9494 | if (ppc_object->opd_valid()) | |
9495 | { | |
9496 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
9497 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
9498 | } | |
9499 | else | |
9500 | { | |
9501 | // If we haven't run scan_opd_relocs, we must delay | |
9502 | // processing this function descriptor reference. | |
9503 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
9504 | } | |
9505 | } | |
9506 | } | |
9507 | ||
9508 | // Add any special sections for this symbol to the gc work list. | |
9509 | // For powerpc64, this adds the code section of a function | |
9510 | // descriptor. | |
9511 | ||
9512 | template<int size, bool big_endian> | |
9513 | void | |
9514 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
9515 | Symbol_table* symtab, | |
9516 | Symbol* sym) const | |
9517 | { | |
6a31512f | 9518 | if (size == 64 && sym->object()->pluginobj() == NULL) |
e81fea4d AM |
9519 | { |
9520 | Powerpc_relobj<size, big_endian>* ppc_object | |
9521 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
9522 | bool is_ordinary; | |
9523 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 9524 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
9525 | { |
9526 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
9527 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
9528 | if (ppc_object->opd_valid()) |
9529 | { | |
9530 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
9531 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
9532 | dst_indx)); | |
c6de8ed4 AM |
9533 | } |
9534 | else | |
9535 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
9536 | } |
9537 | } | |
9538 | } | |
9539 | ||
dc3714f3 AM |
9540 | // For a symbol location in .opd, set LOC to the location of the |
9541 | // function entry. | |
9542 | ||
9543 | template<int size, bool big_endian> | |
9544 | void | |
9545 | Target_powerpc<size, big_endian>::do_function_location( | |
9546 | Symbol_location* loc) const | |
9547 | { | |
a2d7bf59 | 9548 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
9549 | { |
9550 | if (loc->object->is_dynamic()) | |
9551 | { | |
9552 | Powerpc_dynobj<size, big_endian>* ppc_object | |
9553 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
9554 | if (loc->shndx == ppc_object->opd_shndx()) | |
9555 | { | |
9556 | Address dest_off; | |
9557 | Address off = loc->offset - ppc_object->opd_address(); | |
9558 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
9559 | loc->offset = dest_off; | |
9560 | } | |
9561 | } | |
9562 | else | |
9563 | { | |
9564 | const Powerpc_relobj<size, big_endian>* ppc_object | |
9565 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
9566 | if (loc->shndx == ppc_object->opd_shndx()) | |
9567 | { | |
9568 | Address dest_off; | |
9569 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
9570 | loc->offset = dest_off; | |
9571 | } | |
9572 | } | |
9573 | } | |
9574 | } | |
9575 | ||
bbec1a5d AM |
9576 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
9577 | // compiled with -fsplit-stack. The function calls non-split-stack | |
9578 | // code. Change the function to ensure it has enough stack space to | |
9579 | // call some random function. | |
9580 | ||
9581 | template<int size, bool big_endian> | |
9582 | void | |
9583 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
9584 | Relobj* object, | |
9585 | unsigned int shndx, | |
9586 | section_offset_type fnoffset, | |
9587 | section_size_type fnsize, | |
6e0813d3 CC |
9588 | const unsigned char* prelocs, |
9589 | size_t reloc_count, | |
bbec1a5d AM |
9590 | unsigned char* view, |
9591 | section_size_type view_size, | |
9592 | std::string* from, | |
9593 | std::string* to) const | |
9594 | { | |
9595 | // 32-bit not supported. | |
9596 | if (size == 32) | |
9597 | { | |
9598 | // warn | |
9599 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
9600 | prelocs, reloc_count, view, view_size, |
9601 | from, to); | |
bbec1a5d AM |
9602 | return; |
9603 | } | |
9604 | ||
9605 | // The function always starts with | |
9606 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
9607 | // addis %r12,%r1,-allocate@ha | |
9608 | // addi %r12,%r12,-allocate@l | |
9609 | // cmpld %r12,%r0 | |
9610 | // but note that the addis or addi may be replaced with a nop | |
9611 | ||
9612 | unsigned char *entry = view + fnoffset; | |
9613 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9614 | ||
9615 | if ((insn & 0xffff0000) == addis_2_12) | |
9616 | { | |
9617 | /* Skip ELFv2 global entry code. */ | |
9618 | entry += 8; | |
9619 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9620 | } | |
9621 | ||
9622 | unsigned char *pinsn = entry; | |
9623 | bool ok = false; | |
9624 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
9625 | if (insn == ld_private_ss) | |
9626 | { | |
9627 | int32_t allocate = 0; | |
9628 | while (1) | |
9629 | { | |
9630 | pinsn += 4; | |
9631 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
9632 | if ((insn & 0xffff0000) == addis_12_1) | |
9633 | allocate += (insn & 0xffff) << 16; | |
9634 | else if ((insn & 0xffff0000) == addi_12_1 | |
9635 | || (insn & 0xffff0000) == addi_12_12) | |
9636 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
9637 | else if (insn != nop) | |
9638 | break; | |
9639 | } | |
9640 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
9641 | { | |
9642 | int extra = parameters->options().split_stack_adjust_size(); | |
9643 | allocate -= extra; | |
9644 | if (allocate >= 0 || extra < 0) | |
9645 | { | |
9646 | object->error(_("split-stack stack size overflow at " | |
9647 | "section %u offset %0zx"), | |
9648 | shndx, static_cast<size_t>(fnoffset)); | |
9649 | return; | |
9650 | } | |
9651 | pinsn = entry + 4; | |
9652 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
9653 | if (insn != addis_12_1) | |
9654 | { | |
9655 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9656 | pinsn += 4; | |
9657 | insn = addi_12_12 | (allocate & 0xffff); | |
9658 | if (insn != addi_12_12) | |
9659 | { | |
9660 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9661 | pinsn += 4; | |
9662 | } | |
9663 | } | |
9664 | else | |
9665 | { | |
9666 | insn = addi_12_1 | (allocate & 0xffff); | |
9667 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9668 | pinsn += 4; | |
9669 | } | |
9670 | if (pinsn != entry + 12) | |
9671 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
9672 | ||
9673 | ok = true; | |
9674 | } | |
9675 | } | |
9676 | ||
9677 | if (!ok) | |
9678 | { | |
9679 | if (!object->has_no_split_stack()) | |
9680 | object->error(_("failed to match split-stack sequence at " | |
9681 | "section %u offset %0zx"), | |
9682 | shndx, static_cast<size_t>(fnoffset)); | |
9683 | } | |
9684 | } | |
9685 | ||
42cacb20 DE |
9686 | // Scan relocations for a section. |
9687 | ||
9688 | template<int size, bool big_endian> | |
9689 | void | |
9690 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
9691 | Symbol_table* symtab, |
9692 | Layout* layout, | |
9693 | Sized_relobj_file<size, big_endian>* object, | |
9694 | unsigned int data_shndx, | |
9695 | unsigned int sh_type, | |
9696 | const unsigned char* prelocs, | |
9697 | size_t reloc_count, | |
9698 | Output_section* output_section, | |
9699 | bool needs_special_offset_handling, | |
9700 | size_t local_symbol_count, | |
9701 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
9702 | { |
9703 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
9704 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9705 | Classify_reloc; | |
42cacb20 | 9706 | |
7ee7ff70 AM |
9707 | if (!this->plt_localentry0_init_) |
9708 | { | |
9709 | bool plt_localentry0 = false; | |
9710 | if (size == 64 | |
9711 | && this->abiversion() >= 2) | |
9712 | { | |
9713 | if (parameters->options().user_set_plt_localentry()) | |
9714 | plt_localentry0 = parameters->options().plt_localentry(); | |
d44c746a AM |
9715 | if (plt_localentry0 |
9716 | && symtab->lookup("GLIBC_2.26", NULL) == NULL) | |
9717 | gold_warning(_("--plt-localentry is especially dangerous without " | |
9718 | "ld.so support to detect ABI violations")); | |
7ee7ff70 AM |
9719 | } |
9720 | this->plt_localentry0_ = plt_localentry0; | |
9721 | this->plt_localentry0_init_ = true; | |
9722 | } | |
9723 | ||
42cacb20 DE |
9724 | if (sh_type == elfcpp::SHT_REL) |
9725 | { | |
9726 | gold_error(_("%s: unsupported REL reloc section"), | |
9727 | object->name().c_str()); | |
9728 | return; | |
9729 | } | |
9730 | ||
4d625b70 | 9731 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
9732 | symtab, |
9733 | layout, | |
9734 | this, | |
9735 | object, | |
9736 | data_shndx, | |
9737 | prelocs, | |
9738 | reloc_count, | |
9739 | output_section, | |
9740 | needs_special_offset_handling, | |
9741 | local_symbol_count, | |
9742 | plocal_symbols); | |
63e5eea2 AM |
9743 | |
9744 | if (this->plt_localentry0_ && this->power10_relocs_) | |
9745 | { | |
9746 | gold_warning(_("--plt-localentry is incompatible with " | |
9747 | "power10 pc-relative code")); | |
9748 | this->plt_localentry0_ = false; | |
9749 | } | |
42cacb20 DE |
9750 | } |
9751 | ||
ec4dbad3 AM |
9752 | // Functor class for processing the global symbol table. |
9753 | // Removes symbols defined on discarded opd entries. | |
9754 | ||
9755 | template<bool big_endian> | |
9756 | class Global_symbol_visitor_opd | |
9757 | { | |
9758 | public: | |
9759 | Global_symbol_visitor_opd() | |
9760 | { } | |
9761 | ||
9762 | void | |
9763 | operator()(Sized_symbol<64>* sym) | |
9764 | { | |
9765 | if (sym->has_symtab_index() | |
9766 | || sym->source() != Symbol::FROM_OBJECT | |
9767 | || !sym->in_real_elf()) | |
9768 | return; | |
9769 | ||
6c77229c AM |
9770 | if (sym->object()->is_dynamic()) |
9771 | return; | |
9772 | ||
ec4dbad3 AM |
9773 | Powerpc_relobj<64, big_endian>* symobj |
9774 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 9775 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
9776 | return; |
9777 | ||
9778 | bool is_ordinary; | |
9779 | unsigned int shndx = sym->shndx(&is_ordinary); | |
9780 | if (shndx == symobj->opd_shndx() | |
9781 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
9782 | { |
9783 | sym->set_undefined(); | |
e3ee8ed4 | 9784 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
9785 | sym->set_is_defined_in_discarded_section(); |
9786 | sym->set_symtab_index(-1U); | |
9787 | } | |
ec4dbad3 AM |
9788 | } |
9789 | }; | |
9790 | ||
f3a0ed29 AM |
9791 | template<int size, bool big_endian> |
9792 | void | |
9793 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
9794 | Layout* layout, | |
9795 | Symbol_table* symtab) | |
9796 | { | |
9797 | if (size == 64) | |
9798 | { | |
d49044c7 AM |
9799 | Output_data_save_res<size, big_endian>* savres |
9800 | = new Output_data_save_res<size, big_endian>(symtab); | |
9801 | this->savres_section_ = savres; | |
f3a0ed29 AM |
9802 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
9803 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
9804 | savres, ORDER_TEXT, false); | |
9805 | } | |
9806 | } | |
9807 | ||
d8f5a274 AM |
9808 | // Sort linker created .got section first (for the header), then input |
9809 | // sections belonging to files using small model code. | |
9810 | ||
9811 | template<bool big_endian> | |
9812 | class Sort_toc_sections | |
9813 | { | |
9814 | public: | |
9815 | bool | |
9816 | operator()(const Output_section::Input_section& is1, | |
9817 | const Output_section::Input_section& is2) const | |
9818 | { | |
9819 | if (!is1.is_input_section() && is2.is_input_section()) | |
9820 | return true; | |
9821 | bool small1 | |
9822 | = (is1.is_input_section() | |
9823 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
9824 | ->has_small_toc_reloc())); | |
9825 | bool small2 | |
9826 | = (is2.is_input_section() | |
9827 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
9828 | ->has_small_toc_reloc())); | |
9829 | return small1 && !small2; | |
9830 | } | |
9831 | }; | |
9832 | ||
42cacb20 DE |
9833 | // Finalize the sections. |
9834 | ||
9835 | template<int size, bool big_endian> | |
9836 | void | |
d5b40221 DK |
9837 | Target_powerpc<size, big_endian>::do_finalize_sections( |
9838 | Layout* layout, | |
724436fc | 9839 | const Input_objects* input_objects, |
ec4dbad3 | 9840 | Symbol_table* symtab) |
42cacb20 | 9841 | { |
c9824451 AM |
9842 | if (parameters->doing_static_link()) |
9843 | { | |
9844 | // At least some versions of glibc elf-init.o have a strong | |
9845 | // reference to __rela_iplt marker syms. A weak ref would be | |
9846 | // better.. | |
9847 | if (this->iplt_ != NULL) | |
9848 | { | |
9849 | Reloc_section* rel = this->iplt_->rel_plt(); | |
9850 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
9851 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9852 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9853 | elfcpp::STV_HIDDEN, 0, false, true); | |
9854 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
9855 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9856 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9857 | elfcpp::STV_HIDDEN, 0, true, true); | |
9858 | } | |
9859 | else | |
9860 | { | |
9861 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
9862 | Symbol_table::PREDEFINED, 0, 0, | |
9863 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9864 | elfcpp::STV_HIDDEN, 0, true, false); | |
9865 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
9866 | Symbol_table::PREDEFINED, 0, 0, | |
9867 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9868 | elfcpp::STV_HIDDEN, 0, true, false); | |
9869 | } | |
9870 | } | |
9871 | ||
ec4dbad3 AM |
9872 | if (size == 64) |
9873 | { | |
9874 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
9875 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
9876 | |
9877 | if (!parameters->options().relocatable()) | |
9878 | { | |
9879 | this->define_save_restore_funcs(layout, symtab); | |
9880 | ||
9881 | // Annoyingly, we need to make these sections now whether or | |
9882 | // not we need them. If we delay until do_relax then we | |
9883 | // need to mess with the relaxation machinery checkpointing. | |
9884 | this->got_section(symtab, layout); | |
9885 | this->make_brlt_section(layout); | |
d8f5a274 AM |
9886 | |
9887 | if (parameters->options().toc_sort()) | |
9888 | { | |
9889 | Output_section* os = this->got_->output_section(); | |
9890 | if (os != NULL && os->input_sections().size() > 1) | |
9891 | std::stable_sort(os->input_sections().begin(), | |
9892 | os->input_sections().end(), | |
9893 | Sort_toc_sections<big_endian>()); | |
9894 | } | |
ec661b9d | 9895 | } |
ec4dbad3 AM |
9896 | } |
9897 | ||
42cacb20 | 9898 | // Fill in some more dynamic tags. |
c9269dff | 9899 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 9900 | if (odyn != NULL) |
cf43a2fe | 9901 | { |
c9824451 AM |
9902 | const Reloc_section* rel_plt = (this->plt_ == NULL |
9903 | ? NULL | |
9904 | : this->plt_->rel_plt()); | |
9905 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
9906 | this->rela_dyn_, true, size == 32); | |
9907 | ||
9908 | if (size == 32) | |
dd93cd0a | 9909 | { |
c9824451 AM |
9910 | if (this->got_ != NULL) |
9911 | { | |
9912 | this->got_->finalize_data_size(); | |
9913 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
9914 | this->got_, this->got_->g_o_t()); | |
9915 | } | |
34e0882b AM |
9916 | if (this->has_tls_get_addr_opt_) |
9917 | odyn->add_constant(elfcpp::DT_PPC_OPT, elfcpp::PPC_OPT_TLS); | |
dd93cd0a | 9918 | } |
c9824451 | 9919 | else |
dd93cd0a | 9920 | { |
c9824451 AM |
9921 | if (this->glink_ != NULL) |
9922 | { | |
9923 | this->glink_->finalize_data_size(); | |
9924 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
9925 | this->glink_, | |
9e390558 | 9926 | (this->glink_->pltresolve_size() |
c9824451 AM |
9927 | - 32)); |
9928 | } | |
34e0882b | 9929 | if (this->has_localentry0_ || this->has_tls_get_addr_opt_) |
7ee7ff70 | 9930 | odyn->add_constant(elfcpp::DT_PPC64_OPT, |
34e0882b AM |
9931 | ((this->has_localentry0_ |
9932 | ? elfcpp::PPC64_OPT_LOCALENTRY : 0) | |
9933 | | (this->has_tls_get_addr_opt_ | |
9934 | ? elfcpp::PPC64_OPT_TLS : 0))); | |
dd93cd0a | 9935 | } |
c9269dff | 9936 | } |
cf43a2fe | 9937 | |
42cacb20 DE |
9938 | // Emit any relocs we saved in an attempt to avoid generating COPY |
9939 | // relocs. | |
9940 | if (this->copy_relocs_.any_saved_relocs()) | |
9941 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
724436fc AM |
9942 | |
9943 | for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); | |
9944 | p != input_objects->relobj_end(); | |
9945 | ++p) | |
9946 | { | |
9947 | Powerpc_relobj<size, big_endian>* ppc_relobj | |
9948 | = static_cast<Powerpc_relobj<size, big_endian>*>(*p); | |
9949 | if (ppc_relobj->attributes_section_data()) | |
6f3fe02b | 9950 | this->merge_object_attributes(ppc_relobj, |
724436fc AM |
9951 | ppc_relobj->attributes_section_data()); |
9952 | } | |
9953 | for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); | |
9954 | p != input_objects->dynobj_end(); | |
9955 | ++p) | |
9956 | { | |
9957 | Powerpc_dynobj<size, big_endian>* ppc_dynobj | |
9958 | = static_cast<Powerpc_dynobj<size, big_endian>*>(*p); | |
9959 | if (ppc_dynobj->attributes_section_data()) | |
6f3fe02b | 9960 | this->merge_object_attributes(ppc_dynobj, |
724436fc AM |
9961 | ppc_dynobj->attributes_section_data()); |
9962 | } | |
9963 | ||
9964 | // Create a .gnu.attributes section if we have merged any attributes | |
9965 | // from inputs. | |
9966 | if (this->attributes_section_data_ != NULL | |
9967 | && this->attributes_section_data_->size() != 0) | |
9968 | { | |
9969 | Output_attributes_section_data* attributes_section | |
9970 | = new Output_attributes_section_data(*this->attributes_section_data_); | |
9971 | layout->add_output_section_data(".gnu.attributes", | |
9972 | elfcpp::SHT_GNU_ATTRIBUTES, 0, | |
9973 | attributes_section, ORDER_INVALID, false); | |
9974 | } | |
9975 | } | |
9976 | ||
9977 | // Merge object attributes from input file called NAME with those of the | |
9978 | // output. The input object attributes are in the object pointed by PASD. | |
9979 | ||
9980 | template<int size, bool big_endian> | |
9981 | void | |
9982 | Target_powerpc<size, big_endian>::merge_object_attributes( | |
6f3fe02b | 9983 | const Object* obj, |
724436fc AM |
9984 | const Attributes_section_data* pasd) |
9985 | { | |
9986 | // Return if there is no attributes section data. | |
9987 | if (pasd == NULL) | |
9988 | return; | |
9989 | ||
9990 | // Create output object attributes. | |
9991 | if (this->attributes_section_data_ == NULL) | |
9992 | this->attributes_section_data_ = new Attributes_section_data(NULL, 0); | |
9993 | ||
9994 | const int vendor = Object_attribute::OBJ_ATTR_GNU; | |
9995 | const Object_attribute* in_attr = pasd->known_attributes(vendor); | |
9996 | Object_attribute* out_attr | |
9997 | = this->attributes_section_data_->known_attributes(vendor); | |
9998 | ||
6f3fe02b | 9999 | const char* name = obj->name().c_str(); |
724436fc AM |
10000 | const char* err; |
10001 | const char* first; | |
10002 | const char* second; | |
10003 | int tag = elfcpp::Tag_GNU_Power_ABI_FP; | |
10004 | int in_fp = in_attr[tag].int_value() & 0xf; | |
10005 | int out_fp = out_attr[tag].int_value() & 0xf; | |
6f3fe02b | 10006 | bool warn_only = obj->is_dynamic(); |
724436fc AM |
10007 | if (in_fp != out_fp) |
10008 | { | |
10009 | err = NULL; | |
10010 | if ((in_fp & 3) == 0) | |
10011 | ; | |
10012 | else if ((out_fp & 3) == 0) | |
10013 | { | |
6f3fe02b AM |
10014 | if (!warn_only) |
10015 | { | |
10016 | out_fp |= in_fp & 3; | |
10017 | out_attr[tag].set_int_value(out_fp); | |
10018 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10019 | this->last_fp_ = name; | |
10020 | } | |
724436fc AM |
10021 | } |
10022 | else if ((out_fp & 3) != 2 && (in_fp & 3) == 2) | |
10023 | { | |
10024 | err = N_("%s uses hard float, %s uses soft float"); | |
10025 | first = this->last_fp_; | |
10026 | second = name; | |
10027 | } | |
10028 | else if ((out_fp & 3) == 2 && (in_fp & 3) != 2) | |
10029 | { | |
10030 | err = N_("%s uses hard float, %s uses soft float"); | |
10031 | first = name; | |
10032 | second = this->last_fp_; | |
10033 | } | |
10034 | else if ((out_fp & 3) == 1 && (in_fp & 3) == 3) | |
10035 | { | |
10036 | err = N_("%s uses double-precision hard float, " | |
10037 | "%s uses single-precision hard float"); | |
10038 | first = this->last_fp_; | |
10039 | second = name; | |
10040 | } | |
10041 | else if ((out_fp & 3) == 3 && (in_fp & 3) == 1) | |
10042 | { | |
10043 | err = N_("%s uses double-precision hard float, " | |
10044 | "%s uses single-precision hard float"); | |
10045 | first = name; | |
10046 | second = this->last_fp_; | |
10047 | } | |
10048 | ||
10049 | if (err || (in_fp & 0xc) == 0) | |
10050 | ; | |
10051 | else if ((out_fp & 0xc) == 0) | |
10052 | { | |
6f3fe02b AM |
10053 | if (!warn_only) |
10054 | { | |
10055 | out_fp |= in_fp & 0xc; | |
10056 | out_attr[tag].set_int_value(out_fp); | |
10057 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10058 | this->last_ld_ = name; | |
10059 | } | |
724436fc AM |
10060 | } |
10061 | else if ((out_fp & 0xc) != 2 * 4 && (in_fp & 0xc) == 2 * 4) | |
10062 | { | |
10063 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
10064 | first = name; | |
10065 | second = this->last_ld_; | |
10066 | } | |
10067 | else if ((in_fp & 0xc) != 2 * 4 && (out_fp & 0xc) == 2 * 4) | |
10068 | { | |
10069 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
10070 | first = this->last_ld_; | |
10071 | second = name; | |
10072 | } | |
10073 | else if ((out_fp & 0xc) == 1 * 4 && (in_fp & 0xc) == 3 * 4) | |
10074 | { | |
10075 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
10076 | first = this->last_ld_; | |
10077 | second = name; | |
10078 | } | |
10079 | else if ((out_fp & 0xc) == 3 * 4 && (in_fp & 0xc) == 1 * 4) | |
10080 | { | |
10081 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
10082 | first = name; | |
10083 | second = this->last_ld_; | |
10084 | } | |
10085 | ||
10086 | if (err) | |
10087 | { | |
10088 | if (parameters->options().warn_mismatch()) | |
6f3fe02b AM |
10089 | { |
10090 | if (warn_only) | |
10091 | gold_warning(_(err), first, second); | |
10092 | else | |
10093 | gold_error(_(err), first, second); | |
10094 | } | |
724436fc AM |
10095 | // Arrange for this attribute to be deleted. It's better to |
10096 | // say "don't know" about a file than to wrongly claim compliance. | |
6f3fe02b AM |
10097 | if (!warn_only) |
10098 | out_attr[tag].set_type(0); | |
724436fc AM |
10099 | } |
10100 | } | |
10101 | ||
10102 | if (size == 32) | |
10103 | { | |
10104 | tag = elfcpp::Tag_GNU_Power_ABI_Vector; | |
10105 | int in_vec = in_attr[tag].int_value() & 3; | |
10106 | int out_vec = out_attr[tag].int_value() & 3; | |
10107 | if (in_vec != out_vec) | |
10108 | { | |
10109 | err = NULL; | |
10110 | if (in_vec == 0) | |
10111 | ; | |
10112 | else if (out_vec == 0) | |
10113 | { | |
10114 | out_vec = in_vec; | |
10115 | out_attr[tag].set_int_value(out_vec); | |
10116 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10117 | this->last_vec_ = name; | |
10118 | } | |
10119 | // For now, allow generic to transition to AltiVec or SPE | |
10120 | // without a warning. If GCC marked files with their stack | |
10121 | // alignment and used don't-care markings for files which are | |
10122 | // not affected by the vector ABI, we could warn about this | |
10123 | // case too. */ | |
10124 | else if (in_vec == 1) | |
10125 | ; | |
10126 | else if (out_vec == 1) | |
10127 | { | |
10128 | out_vec = in_vec; | |
10129 | out_attr[tag].set_int_value(out_vec); | |
10130 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10131 | this->last_vec_ = name; | |
10132 | } | |
10133 | else if (out_vec < in_vec) | |
10134 | { | |
10135 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
10136 | first = this->last_vec_; | |
10137 | second = name; | |
10138 | } | |
10139 | else if (out_vec > in_vec) | |
10140 | { | |
10141 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
10142 | first = name; | |
10143 | second = this->last_vec_; | |
10144 | } | |
10145 | if (err) | |
10146 | { | |
10147 | if (parameters->options().warn_mismatch()) | |
10148 | gold_error(_(err), first, second); | |
10149 | out_attr[tag].set_type(0); | |
10150 | } | |
10151 | } | |
10152 | ||
10153 | tag = elfcpp::Tag_GNU_Power_ABI_Struct_Return; | |
10154 | int in_struct = in_attr[tag].int_value() & 3; | |
10155 | int out_struct = out_attr[tag].int_value() & 3; | |
10156 | if (in_struct != out_struct) | |
10157 | { | |
10158 | err = NULL; | |
10159 | if (in_struct == 0 || in_struct == 3) | |
10160 | ; | |
10161 | else if (out_struct == 0) | |
10162 | { | |
10163 | out_struct = in_struct; | |
10164 | out_attr[tag].set_int_value(out_struct); | |
10165 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
10166 | this->last_struct_ = name; | |
10167 | } | |
10168 | else if (out_struct < in_struct) | |
10169 | { | |
10170 | err = N_("%s uses r3/r4 for small structure returns, " | |
10171 | "%s uses memory"); | |
10172 | first = this->last_struct_; | |
10173 | second = name; | |
10174 | } | |
10175 | else if (out_struct > in_struct) | |
10176 | { | |
10177 | err = N_("%s uses r3/r4 for small structure returns, " | |
10178 | "%s uses memory"); | |
10179 | first = name; | |
10180 | second = this->last_struct_; | |
10181 | } | |
10182 | if (err) | |
10183 | { | |
10184 | if (parameters->options().warn_mismatch()) | |
10185 | gold_error(_(err), first, second); | |
10186 | out_attr[tag].set_type(0); | |
10187 | } | |
10188 | } | |
10189 | } | |
10190 | ||
10191 | // Merge Tag_compatibility attributes and any common GNU ones. | |
10192 | this->attributes_section_data_->merge(name, pasd); | |
42cacb20 DE |
10193 | } |
10194 | ||
5edad15d AM |
10195 | // Emit any saved relocs, and mark toc entries using any of these |
10196 | // relocs as not optimizable. | |
aba6bc71 | 10197 | |
5edad15d AM |
10198 | template<int sh_type, int size, bool big_endian> |
10199 | void | |
10200 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
10201 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 10202 | { |
5edad15d AM |
10203 | if (size == 64 |
10204 | && parameters->options().toc_optimize()) | |
10205 | { | |
10206 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
10207 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
10208 | p != this->entries_.end(); | |
10209 | ++p) | |
10210 | { | |
10211 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
10212 | entry = *p; | |
10213 | ||
10214 | // If the symbol is no longer defined in a dynamic object, | |
10215 | // then we emitted a COPY relocation. If it is still | |
10216 | // dynamic then we'll need dynamic relocations and thus | |
10217 | // can't optimize toc entries. | |
10218 | if (entry.sym_->is_from_dynobj()) | |
10219 | { | |
10220 | Powerpc_relobj<size, big_endian>* ppc_object | |
10221 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
10222 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
10223 | ppc_object->set_no_toc_opt(entry.address_); | |
10224 | } | |
10225 | } | |
10226 | } | |
10227 | ||
10228 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
10229 | } |
10230 | ||
3ea0a085 AM |
10231 | // Return the value to use for a branch relocation. |
10232 | ||
10233 | template<int size, bool big_endian> | |
1611bc4a | 10234 | bool |
3ea0a085 | 10235 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 10236 | const Symbol_table* symtab, |
3ea0a085 AM |
10237 | const Sized_symbol<size>* gsym, |
10238 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 10239 | Address *value, |
3ea0a085 AM |
10240 | unsigned int *dest_shndx) |
10241 | { | |
9055360d AM |
10242 | if (size == 32 || this->abiversion() >= 2) |
10243 | gold_unreachable(); | |
3ea0a085 | 10244 | *dest_shndx = 0; |
3ea0a085 AM |
10245 | |
10246 | // If the symbol is defined in an opd section, ie. is a function | |
10247 | // descriptor, use the function descriptor code entry address | |
10248 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 10249 | if (gsym != NULL |
0e123f69 AM |
10250 | && (gsym->source() != Symbol::FROM_OBJECT |
10251 | || gsym->object()->is_dynamic())) | |
1611bc4a | 10252 | return true; |
3ea0a085 AM |
10253 | if (gsym != NULL) |
10254 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
10255 | unsigned int shndx = symobj->opd_shndx(); | |
10256 | if (shndx == 0) | |
1611bc4a | 10257 | return true; |
3ea0a085 | 10258 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 10259 | if (opd_addr == invalid_address) |
1611bc4a | 10260 | return true; |
c6905c28 | 10261 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 10262 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
10263 | { |
10264 | Address sec_off; | |
1611bc4a | 10265 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
10266 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
10267 | { | |
10268 | Section_id folded | |
10269 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
10270 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
10271 | *dest_shndx = folded.second; | |
10272 | } | |
3ea0a085 | 10273 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
10274 | if (sec_addr == invalid_address) |
10275 | return false; | |
10276 | ||
3ea0a085 | 10277 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 10278 | *value = sec_addr + sec_off; |
3ea0a085 | 10279 | } |
1611bc4a | 10280 | return true; |
3ea0a085 AM |
10281 | } |
10282 | ||
c9b8abb7 AM |
10283 | template<int size> |
10284 | static bool | |
10285 | relative_value_is_known(const Sized_symbol<size>* gsym) | |
10286 | { | |
10287 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
10288 | return false; | |
10289 | ||
10290 | if (gsym->is_from_dynobj() | |
10291 | || gsym->is_undefined() | |
10292 | || gsym->is_preemptible()) | |
10293 | return false; | |
10294 | ||
10295 | if (gsym->is_absolute()) | |
10296 | return !parameters->options().output_is_position_independent(); | |
10297 | ||
10298 | return true; | |
10299 | } | |
10300 | ||
10301 | template<int size> | |
10302 | static bool | |
10303 | relative_value_is_known(const Symbol_value<size>* psymval) | |
10304 | { | |
10305 | if (psymval->is_ifunc_symbol()) | |
10306 | return false; | |
10307 | ||
10308 | bool is_ordinary; | |
10309 | unsigned int shndx = psymval->input_shndx(&is_ordinary); | |
10310 | ||
10311 | return is_ordinary && shndx != elfcpp::SHN_UNDEF; | |
10312 | } | |
10313 | ||
0c951c25 AM |
10314 | // PCREL_OPT in one instance flags to the linker that a pair of insns: |
10315 | // pld ra,symbol@got@pcrel | |
10316 | // load/store rt,0(ra) | |
10317 | // or | |
10318 | // pla ra,symbol@pcrel | |
10319 | // load/store rt,0(ra) | |
10320 | // may be translated to | |
10321 | // pload/pstore rt,symbol@pcrel | |
10322 | // nop. | |
10323 | // This function returns true if the optimization is possible, placing | |
10324 | // the prefix insn in *PINSN1 and a NOP in *PINSN2. | |
10325 | // | |
10326 | // On entry to this function, the linker has already determined that | |
10327 | // the pld can be replaced with pla: *PINSN1 is that pla insn, | |
10328 | // while *PINSN2 is the second instruction. | |
10329 | ||
10330 | inline bool | |
10331 | xlate_pcrel_opt(uint64_t *pinsn1, uint64_t *pinsn2) | |
10332 | { | |
10333 | uint32_t insn2 = *pinsn2 >> 32; | |
10334 | uint64_t i1new; | |
10335 | ||
10336 | // Check that regs match. | |
10337 | if (((insn2 >> 16) & 31) != ((*pinsn1 >> 21) & 31)) | |
10338 | return false; | |
10339 | ||
10340 | switch ((insn2 >> 26) & 63) | |
10341 | { | |
10342 | default: | |
10343 | return false; | |
10344 | ||
10345 | case 32: // lwz | |
10346 | case 34: // lbz | |
10347 | case 36: // stw | |
10348 | case 38: // stb | |
10349 | case 40: // lhz | |
10350 | case 42: // lha | |
10351 | case 44: // sth | |
10352 | case 48: // lfs | |
10353 | case 50: // lfd | |
10354 | case 52: // stfs | |
10355 | case 54: // stfd | |
10356 | // These are the PMLS cases, where we just need to tack a prefix | |
10357 | // on the insn. Check that the D field is zero. | |
10358 | if ((insn2 & 0xffff) != 0) | |
10359 | return false; | |
10360 | i1new = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
10361 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
10362 | break; | |
10363 | ||
10364 | case 58: // lwa, ld | |
10365 | if ((insn2 & 0xfffd) != 0) | |
10366 | return false; | |
10367 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10368 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) | |
10369 | | (insn2 & (31ULL << 21))); | |
10370 | break; | |
10371 | ||
10372 | case 57: // lxsd, lxssp | |
10373 | if ((insn2 & 0xfffc) != 0 || (insn2 & 3) < 2) | |
10374 | return false; | |
10375 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10376 | | ((40ULL | (insn2 & 3)) << 26) | |
10377 | | (insn2 & (31ULL << 21))); | |
10378 | break; | |
10379 | ||
10380 | case 61: // stxsd, stxssp, lxv, stxv | |
10381 | if ((insn2 & 3) == 0) | |
10382 | return false; | |
10383 | else if ((insn2 & 3) >= 2) | |
10384 | { | |
10385 | if ((insn2 & 0xfffc) != 0) | |
10386 | return false; | |
10387 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10388 | | ((44ULL | (insn2 & 3)) << 26) | |
10389 | | (insn2 & (31ULL << 21))); | |
10390 | } | |
10391 | else | |
10392 | { | |
10393 | if ((insn2 & 0xfff0) != 0) | |
10394 | return false; | |
10395 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10396 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) | |
10397 | | (insn2 & (31ULL << 21))); | |
10398 | } | |
10399 | break; | |
10400 | ||
10401 | case 56: // lq | |
10402 | if ((insn2 & 0xffff) != 0) | |
10403 | return false; | |
10404 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10405 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); | |
10406 | break; | |
10407 | ||
10408 | case 62: // std, stq | |
10409 | if ((insn2 & 0xfffd) != 0) | |
10410 | return false; | |
10411 | i1new = ((1ULL << 58) | (1ULL << 52) | |
10412 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) | |
10413 | | (insn2 & (31ULL << 21))); | |
10414 | break; | |
10415 | } | |
10416 | ||
10417 | *pinsn1 = i1new; | |
10418 | *pinsn2 = (uint64_t) nop << 32; | |
10419 | return true; | |
10420 | } | |
10421 | ||
42cacb20 DE |
10422 | // Perform a relocation. |
10423 | ||
10424 | template<int size, bool big_endian> | |
10425 | inline bool | |
10426 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 10427 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 10428 | unsigned int, |
d83ce4e3 AM |
10429 | Target_powerpc* target, |
10430 | Output_section* os, | |
10431 | size_t relnum, | |
91a65d2f | 10432 | const unsigned char* preloc, |
d83ce4e3 AM |
10433 | const Sized_symbol<size>* gsym, |
10434 | const Symbol_value<size>* psymval, | |
10435 | unsigned char* view, | |
c9269dff AM |
10436 | Address address, |
10437 | section_size_type view_size) | |
42cacb20 | 10438 | { |
23cedd1d AM |
10439 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
10440 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; | |
10441 | typedef typename elfcpp::Rela<size, big_endian> Reltype; | |
10442 | ||
0e804863 ILT |
10443 | if (view == NULL) |
10444 | return true; | |
10445 | ||
34e0882b AM |
10446 | if (target->replace_tls_get_addr(gsym)) |
10447 | gsym = static_cast<const Sized_symbol<size>*>(target->tls_get_addr_opt()); | |
10448 | ||
91a65d2f AM |
10449 | const elfcpp::Rela<size, big_endian> rela(preloc); |
10450 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
0af4fcc2 AM |
10451 | Powerpc_relobj<size, big_endian>* const object |
10452 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
34e0882b | 10453 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) |
dd93cd0a | 10454 | { |
e3deeb9c | 10455 | case Track_tls::NOT_EXPECTED: |
0af4fcc2 AM |
10456 | if (!parameters->options().shared() |
10457 | && parameters->options().tls_optimize()) | |
10458 | { | |
10459 | // It is a hard error to see a __tls_get_addr call without | |
10460 | // marker relocs after seeing calls with marker relocs in the | |
10461 | // same object file, because dynamic relocation accounting | |
10462 | // will be wrong. | |
10463 | if (object->tls_opt_error()) | |
10464 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
10465 | _("__tls_get_addr call lacks marker reloc")); | |
10466 | else | |
10467 | gold_warning_at_location(relinfo, relnum, rela.get_r_offset(), | |
10468 | _("__tls_get_addr call lacks marker reloc")); | |
10469 | } | |
e3deeb9c AM |
10470 | break; |
10471 | case Track_tls::EXPECTED: | |
10472 | // We have already complained. | |
10473 | break; | |
10474 | case Track_tls::SKIP: | |
23cedd1d | 10475 | if (is_plt16_reloc<size>(r_type) |
32f59844 AM |
10476 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
10477 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC) | |
23cedd1d AM |
10478 | { |
10479 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10480 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10481 | } | |
10482 | else if (size == 64 && r_type == elfcpp::R_POWERPC_PLTCALL) | |
10483 | { | |
10484 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10485 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, nop); | |
10486 | } | |
e4dff765 AM |
10487 | else if (size == 64 && (r_type == elfcpp::R_PPC64_PLT_PCREL34 |
10488 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
10489 | { | |
10490 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10491 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
10492 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
10493 | } | |
e3deeb9c AM |
10494 | return true; |
10495 | case Track_tls::NORMAL: | |
10496 | break; | |
dd93cd0a | 10497 | } |
dd93cd0a | 10498 | |
dcfc7dd4 AM |
10499 | // Offset from start of insn to d-field reloc. |
10500 | const int d_offset = big_endian ? 2 : 0; | |
10501 | ||
dd93cd0a | 10502 | Address value = 0; |
0cfb0717 | 10503 | bool has_stub_value = false; |
7ee7ff70 | 10504 | bool localentry0 = false; |
e5d5f5ed | 10505 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
08be3224 AM |
10506 | bool has_plt_offset |
10507 | = (gsym != NULL | |
88b8e639 | 10508 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
08be3224 AM |
10509 | : object->local_has_plt_offset(r_sym)); |
10510 | if (has_plt_offset | |
4290b0ab | 10511 | && !is_got_reloc(r_type) |
08be3224 | 10512 | && !is_plt16_reloc<size>(r_type) |
e4dff765 AM |
10513 | && r_type != elfcpp::R_PPC64_PLT_PCREL34 |
10514 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
23cedd1d AM |
10515 | && r_type != elfcpp::R_POWERPC_PLTSEQ |
10516 | && r_type != elfcpp::R_POWERPC_PLTCALL | |
32f59844 AM |
10517 | && r_type != elfcpp::R_PPC64_PLTSEQ_NOTOC |
10518 | && r_type != elfcpp::R_PPC64_PLTCALL_NOTOC | |
b3ccdeb5 | 10519 | && (!psymval->is_ifunc_symbol() |
9055360d | 10520 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 10521 | { |
9055360d AM |
10522 | if (size == 64 |
10523 | && gsym != NULL | |
10524 | && target->abiversion() >= 2 | |
10525 | && !parameters->options().output_is_position_independent() | |
32f59844 | 10526 | && !is_branch_reloc<size>(r_type)) |
ec661b9d | 10527 | { |
faa2211d AM |
10528 | Address off = target->glink_section()->find_global_entry(gsym); |
10529 | if (off != invalid_address) | |
6ec65f28 AM |
10530 | { |
10531 | value = target->glink_section()->global_entry_address() + off; | |
10532 | has_stub_value = true; | |
10533 | } | |
ec661b9d | 10534 | } |
c9824451 | 10535 | else |
9055360d | 10536 | { |
64b5d6d7 AM |
10537 | Stub_table<size, big_endian>* stub_table = NULL; |
10538 | if (target->stub_tables().size() == 1) | |
10539 | stub_table = target->stub_tables()[0]; | |
10540 | if (stub_table == NULL | |
10541 | && !(size == 32 | |
10542 | && gsym != NULL | |
10543 | && !parameters->options().output_is_position_independent() | |
32f59844 | 10544 | && !is_branch_reloc<size>(r_type))) |
64b5d6d7 | 10545 | stub_table = object->stub_table(relinfo->data_shndx); |
9055360d AM |
10546 | if (stub_table == NULL) |
10547 | { | |
64b5d6d7 AM |
10548 | // This is a ref from a data section to an ifunc symbol, |
10549 | // or a non-branch reloc for which we always want to use | |
10550 | // one set of stubs for resolving function addresses. | |
9055360d AM |
10551 | if (target->stub_tables().size() != 0) |
10552 | stub_table = target->stub_tables()[0]; | |
10553 | } | |
faa2211d AM |
10554 | if (stub_table != NULL) |
10555 | { | |
7e57d19e | 10556 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 10557 | if (gsym != NULL) |
7e57d19e | 10558 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
10559 | rela.get_r_addend()); |
10560 | else | |
7e57d19e | 10561 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 10562 | rela.get_r_addend()); |
7e57d19e | 10563 | if (ent != NULL) |
faa2211d | 10564 | { |
7e57d19e AM |
10565 | value = stub_table->stub_address() + ent->off_; |
10566 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
10567 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
10568 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
afd2ea23 AM |
10569 | if (size == 64 |
10570 | && r_type != elfcpp::R_PPC64_REL24_NOTOC) | |
10571 | value += ent->tocoff_; | |
7e57d19e AM |
10572 | if (size == 64 |
10573 | && ent->r2save_ | |
a993d270 AM |
10574 | && !(gsym != NULL |
10575 | && target->is_tls_get_addr_opt(gsym))) | |
afd2ea23 | 10576 | { |
a993d270 AM |
10577 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
10578 | { | |
10579 | if (!(target->power10_stubs() | |
10580 | && target->power10_stubs_auto())) | |
10581 | value += 4; | |
10582 | } | |
10583 | else if (relnum < reloc_count - 1) | |
10584 | { | |
10585 | Reltype next_rela(preloc + reloc_size); | |
10586 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
10587 | == elfcpp::R_PPC64_TOCSAVE | |
10588 | && (next_rela.get_r_offset() | |
10589 | == rela.get_r_offset() + 4)) | |
10590 | value += 4; | |
10591 | } | |
7e57d19e | 10592 | } |
7ee7ff70 | 10593 | localentry0 = ent->localentry0_; |
faa2211d AM |
10594 | has_stub_value = true; |
10595 | } | |
10596 | } | |
9055360d | 10597 | } |
faa2211d AM |
10598 | // We don't care too much about bogus debug references to |
10599 | // non-local functions, but otherwise there had better be a plt | |
10600 | // call stub or global entry stub as appropriate. | |
10601 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 10602 | } |
cf43a2fe | 10603 | |
e4dff765 AM |
10604 | if (has_plt_offset && (is_plt16_reloc<size>(r_type) |
10605 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
10606 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
08be3224 AM |
10607 | { |
10608 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
10609 | if (gsym) | |
10610 | value = target->plt_off(gsym, &plt); | |
10611 | else | |
10612 | value = target->plt_off(object, r_sym, &plt); | |
10613 | value += plt->address(); | |
10614 | ||
10615 | if (size == 64) | |
e4dff765 AM |
10616 | { |
10617 | if (r_type != elfcpp::R_PPC64_PLT_PCREL34 | |
10618 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC) | |
10619 | value -= (target->got_section()->output_section()->address() | |
10620 | + object->toc_base_offset()); | |
10621 | } | |
08be3224 AM |
10622 | else if (parameters->options().output_is_position_independent()) |
10623 | { | |
10624 | if (rela.get_r_addend() >= 32768) | |
10625 | { | |
10626 | unsigned int got2 = object->got2_shndx(); | |
10627 | value -= (object->get_output_section_offset(got2) | |
10628 | + object->output_section(got2)->address() | |
10629 | + rela.get_r_addend()); | |
10630 | } | |
10631 | else | |
10632 | value -= (target->got_section()->address() | |
10633 | + target->got_section()->g_o_t()); | |
10634 | } | |
10635 | } | |
23cedd1d AM |
10636 | else if (!has_plt_offset |
10637 | && (is_plt16_reloc<size>(r_type) | |
32f59844 AM |
10638 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
10639 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
10640 | { |
10641 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10642 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10643 | r_type = elfcpp::R_POWERPC_NONE; | |
10644 | } | |
e4dff765 AM |
10645 | else if (!has_plt_offset |
10646 | && (r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
10647 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
10648 | { | |
10649 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10650 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
10651 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
10652 | r_type = elfcpp::R_POWERPC_NONE; | |
10653 | } | |
4290b0ab | 10654 | else if (is_got_reloc(r_type)) |
42cacb20 | 10655 | { |
cf43a2fe AM |
10656 | if (gsym != NULL) |
10657 | { | |
10658 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
10659 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
10660 | } | |
10661 | else | |
10662 | { | |
cf43a2fe AM |
10663 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
10664 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
10665 | } | |
e4dff765 AM |
10666 | if (r_type == elfcpp::R_PPC64_GOT_PCREL34) |
10667 | value += target->got_section()->address(); | |
10668 | else | |
10669 | value -= target->got_section()->got_base_offset(object); | |
cf43a2fe AM |
10670 | } |
10671 | else if (r_type == elfcpp::R_PPC64_TOC) | |
10672 | { | |
c9269dff | 10673 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 10674 | + object->toc_base_offset()); |
cf43a2fe AM |
10675 | } |
10676 | else if (gsym != NULL | |
10677 | && (r_type == elfcpp::R_POWERPC_REL24 | |
10678 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 10679 | && has_stub_value) |
cf43a2fe | 10680 | { |
c9269dff AM |
10681 | if (size == 64) |
10682 | { | |
10683 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
10684 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
34e0882b AM |
10685 | bool can_plt_call = localentry0 || target->is_tls_get_addr_opt(gsym); |
10686 | if (!can_plt_call && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 10687 | { |
3ea0a085 | 10688 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 10689 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
10690 | if ((insn & 1) != 0 |
10691 | && (insn2 == nop | |
10692 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 10693 | { |
b4f7960d AM |
10694 | elfcpp::Swap<32, big_endian>:: |
10695 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
10696 | can_plt_call = true; |
10697 | } | |
10698 | } | |
10699 | if (!can_plt_call) | |
3ea0a085 AM |
10700 | { |
10701 | // If we don't have a branch and link followed by a nop, | |
10702 | // we can't go via the plt because there is no place to | |
10703 | // put a toc restoring instruction. | |
10704 | // Unless we know we won't be returning. | |
10705 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
10706 | can_plt_call = true; | |
10707 | } | |
10708 | if (!can_plt_call) | |
10709 | { | |
ba8ca3e7 AM |
10710 | // g++ as of 20130507 emits self-calls without a |
10711 | // following nop. This is arguably wrong since we have | |
10712 | // conflicting information. On the one hand a global | |
10713 | // symbol and on the other a local call sequence, but | |
10714 | // don't error for this special case. | |
10715 | // It isn't possible to cheaply verify we have exactly | |
10716 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 10717 | bool ok = false; |
c9824451 | 10718 | Address code = value; |
3ea0a085 AM |
10719 | if (gsym->source() == Symbol::FROM_OBJECT |
10720 | && gsym->object() == object) | |
10721 | { | |
9055360d AM |
10722 | unsigned int dest_shndx = 0; |
10723 | if (target->abiversion() < 2) | |
10724 | { | |
10725 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
10726 | code = psymval->value(object, addend); |
10727 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
10728 | &code, &dest_shndx); | |
9055360d | 10729 | } |
3ea0a085 AM |
10730 | bool is_ordinary; |
10731 | if (dest_shndx == 0) | |
10732 | dest_shndx = gsym->shndx(&is_ordinary); | |
10733 | ok = dest_shndx == relinfo->data_shndx; | |
10734 | } | |
10735 | if (!ok) | |
c9824451 AM |
10736 | { |
10737 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
10738 | _("call lacks nop, can't restore toc; " | |
10739 | "recompile with -fPIC")); | |
10740 | value = code; | |
10741 | } | |
3ea0a085 | 10742 | } |
c9269dff | 10743 | } |
cf43a2fe | 10744 | } |
dd93cd0a AM |
10745 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
10746 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
10747 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
89c52ae3 | 10748 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA |
87c69f97 | 10749 | || r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a AM |
10750 | { |
10751 | // First instruction of a global dynamic sequence, arg setup insn. | |
0af4fcc2 AM |
10752 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
10753 | if (!object->no_tls_marker()) | |
10754 | { | |
10755 | bool final = gsym == NULL || gsym->final_value_is_known(); | |
10756 | tls_type = target->optimize_tls_gd(final); | |
10757 | } | |
dd93cd0a AM |
10758 | enum Got_type got_type = GOT_TYPE_STANDARD; |
10759 | if (tls_type == tls::TLSOPT_NONE) | |
10760 | got_type = GOT_TYPE_TLSGD; | |
10761 | else if (tls_type == tls::TLSOPT_TO_IE) | |
10762 | got_type = GOT_TYPE_TPREL; | |
10763 | if (got_type != GOT_TYPE_STANDARD) | |
10764 | { | |
10765 | if (gsym != NULL) | |
10766 | { | |
10767 | gold_assert(gsym->has_got_offset(got_type)); | |
10768 | value = gsym->got_offset(got_type); | |
10769 | } | |
10770 | else | |
10771 | { | |
dd93cd0a AM |
10772 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
10773 | value = object->local_got_offset(r_sym, got_type); | |
10774 | } | |
87c69f97 | 10775 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
89c52ae3 AM |
10776 | value += target->got_section()->address(); |
10777 | else | |
10778 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10779 | } |
10780 | if (tls_type == tls::TLSOPT_TO_IE) | |
10781 | { | |
87c69f97 | 10782 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a | 10783 | { |
89c52ae3 AM |
10784 | Insn* iview = reinterpret_cast<Insn*>(view); |
10785 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10786 | pinsn <<= 32; | |
10787 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10788 | // pla -> pld | |
10789 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
10790 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10791 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10792 | pinsn & 0xffffffff); | |
87c69f97 | 10793 | r_type = elfcpp::R_PPC64_GOT_TPREL_PCREL34; |
89c52ae3 AM |
10794 | } |
10795 | else | |
10796 | { | |
10797 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10798 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10799 | { | |
10800 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10801 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10802 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
10803 | if (size == 32) | |
10804 | insn |= 32 << 26; // lwz | |
10805 | else | |
10806 | insn |= 58 << 26; // ld | |
10807 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10808 | } | |
10809 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
10810 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
dd93cd0a | 10811 | } |
dd93cd0a AM |
10812 | } |
10813 | else if (tls_type == tls::TLSOPT_TO_LE) | |
10814 | { | |
87c69f97 | 10815 | if (r_type == elfcpp::R_PPC64_GOT_TLSGD_PCREL34) |
dd93cd0a | 10816 | { |
89c52ae3 AM |
10817 | Insn* iview = reinterpret_cast<Insn*>(view); |
10818 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10819 | pinsn <<= 32; | |
10820 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10821 | // pla pcrel -> paddi r13 | |
10822 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
10823 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10824 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10825 | pinsn & 0xffffffff); | |
10826 | r_type = elfcpp::R_PPC64_TPREL34; | |
dd93cd0a AM |
10827 | value = psymval->value(object, rela.get_r_addend()); |
10828 | } | |
10829 | else | |
10830 | { | |
89c52ae3 AM |
10831 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
10832 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10833 | { | |
10834 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10835 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10836 | insn &= (1 << 26) - (1 << 21); // extract rt | |
10837 | if (size == 32) | |
10838 | insn |= addis_0_2; | |
10839 | else | |
10840 | insn |= addis_0_13; | |
10841 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10842 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10843 | value = psymval->value(object, rela.get_r_addend()); | |
10844 | } | |
10845 | else | |
10846 | { | |
10847 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10848 | Insn insn = nop; | |
10849 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10850 | r_type = elfcpp::R_POWERPC_NONE; | |
10851 | } | |
dd93cd0a AM |
10852 | } |
10853 | } | |
10854 | } | |
10855 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10856 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
10857 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
89c52ae3 | 10858 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA |
87c69f97 | 10859 | || r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
dd93cd0a AM |
10860 | { |
10861 | // First instruction of a local dynamic sequence, arg setup insn. | |
0af4fcc2 AM |
10862 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
10863 | if (!object->no_tls_marker()) | |
10864 | tls_type = target->optimize_tls_ld(); | |
dd93cd0a AM |
10865 | if (tls_type == tls::TLSOPT_NONE) |
10866 | { | |
10867 | value = target->tlsld_got_offset(); | |
87c69f97 | 10868 | if (r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
89c52ae3 AM |
10869 | value += target->got_section()->address(); |
10870 | else | |
10871 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10872 | } |
10873 | else | |
10874 | { | |
10875 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
87c69f97 | 10876 | if (r_type == elfcpp::R_PPC64_GOT_TLSLD_PCREL34) |
89c52ae3 AM |
10877 | { |
10878 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10879 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10880 | pinsn <<= 32; | |
10881 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10882 | // pla pcrel -> paddi r13 | |
10883 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
10884 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10885 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10886 | pinsn & 0xffffffff); | |
10887 | r_type = elfcpp::R_PPC64_TPREL34; | |
10888 | value = dtp_offset; | |
10889 | } | |
10890 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10891 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
dd93cd0a | 10892 | { |
dcfc7dd4 | 10893 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
10894 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10895 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 10896 | if (size == 32) |
0f81d3f0 AM |
10897 | insn |= addis_0_2; |
10898 | else | |
10899 | insn |= addis_0_13; | |
dd93cd0a AM |
10900 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
10901 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 10902 | value = dtp_offset; |
dd93cd0a AM |
10903 | } |
10904 | else | |
10905 | { | |
dcfc7dd4 | 10906 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10907 | Insn insn = nop; |
10908 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10909 | r_type = elfcpp::R_POWERPC_NONE; | |
10910 | } | |
10911 | } | |
10912 | } | |
10913 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
10914 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
10915 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
89c52ae3 | 10916 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA |
87c69f97 | 10917 | || r_type == elfcpp::R_PPC64_GOT_DTPREL_PCREL34) |
dd93cd0a AM |
10918 | { |
10919 | // Accesses relative to a local dynamic sequence address, | |
10920 | // no optimisation here. | |
10921 | if (gsym != NULL) | |
10922 | { | |
10923 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
10924 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
10925 | } | |
10926 | else | |
10927 | { | |
dd93cd0a AM |
10928 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
10929 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
10930 | } | |
87c69f97 | 10931 | if (r_type == elfcpp::R_PPC64_GOT_DTPREL_PCREL34) |
89c52ae3 AM |
10932 | value += target->got_section()->address(); |
10933 | else | |
10934 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10935 | } |
10936 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10937 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
10938 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
89c52ae3 | 10939 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA |
87c69f97 | 10940 | || r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
dd93cd0a AM |
10941 | { |
10942 | // First instruction of initial exec sequence. | |
0af4fcc2 AM |
10943 | bool final = gsym == NULL || gsym->final_value_is_known(); |
10944 | tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
dd93cd0a AM |
10945 | if (tls_type == tls::TLSOPT_NONE) |
10946 | { | |
10947 | if (gsym != NULL) | |
10948 | { | |
10949 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
10950 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
10951 | } | |
10952 | else | |
10953 | { | |
dd93cd0a AM |
10954 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
10955 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
10956 | } | |
87c69f97 | 10957 | if (r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
89c52ae3 AM |
10958 | value += target->got_section()->address(); |
10959 | else | |
10960 | value -= target->got_section()->got_base_offset(object); | |
dd93cd0a AM |
10961 | } |
10962 | else | |
10963 | { | |
10964 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
87c69f97 | 10965 | if (r_type == elfcpp::R_PPC64_GOT_TPREL_PCREL34) |
89c52ae3 AM |
10966 | { |
10967 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10968 | uint64_t pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10969 | pinsn <<= 32; | |
10970 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10971 | // pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel | |
10972 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
10973 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
10974 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
10975 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10976 | pinsn & 0xffffffff); | |
10977 | r_type = elfcpp::R_PPC64_TPREL34; | |
10978 | value = psymval->value(object, rela.get_r_addend()); | |
10979 | } | |
10980 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10981 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
dd93cd0a | 10982 | { |
dcfc7dd4 | 10983 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10984 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10985 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
10986 | if (size == 32) | |
10987 | insn |= addis_0_2; | |
10988 | else | |
10989 | insn |= addis_0_13; | |
10990 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10991 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10992 | value = psymval->value(object, rela.get_r_addend()); | |
10993 | } | |
10994 | else | |
10995 | { | |
dcfc7dd4 | 10996 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10997 | Insn insn = nop; |
10998 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10999 | r_type = elfcpp::R_POWERPC_NONE; | |
11000 | } | |
11001 | } | |
11002 | } | |
11003 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
11004 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
11005 | { | |
11006 | // Second instruction of a global dynamic sequence, | |
11007 | // the __tls_get_addr call | |
e3deeb9c | 11008 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
0af4fcc2 AM |
11009 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
11010 | if (!object->no_tls_marker()) | |
11011 | { | |
11012 | bool final = gsym == NULL || gsym->final_value_is_known(); | |
11013 | tls_type = target->optimize_tls_gd(final); | |
11014 | } | |
dd93cd0a AM |
11015 | if (tls_type != tls::TLSOPT_NONE) |
11016 | { | |
11017 | if (tls_type == tls::TLSOPT_TO_IE) | |
11018 | { | |
11019 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11020 | Insn insn = add_3_3_13; | |
11021 | if (size == 32) | |
11022 | insn = add_3_3_2; | |
11023 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11024 | r_type = elfcpp::R_POWERPC_NONE; | |
11025 | } | |
11026 | else | |
11027 | { | |
89c52ae3 AM |
11028 | bool is_pcrel = false; |
11029 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
11030 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
11031 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
11032 | if (relnum < reloc_count - 1) | |
11033 | { | |
11034 | Reltype next_rela(preloc + reloc_size); | |
11035 | unsigned int r_type2 | |
11036 | = elfcpp::elf_r_type<size>(next_rela.get_r_info()); | |
11037 | if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC | |
11038 | || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
11039 | && next_rela.get_r_offset() == rela.get_r_offset()) | |
11040 | is_pcrel = true; | |
11041 | } | |
dd93cd0a | 11042 | Insn* iview = reinterpret_cast<Insn*>(view); |
89c52ae3 AM |
11043 | if (is_pcrel) |
11044 | { | |
11045 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
11046 | r_type = elfcpp::R_POWERPC_NONE; | |
11047 | } | |
11048 | else | |
11049 | { | |
11050 | elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); | |
11051 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
11052 | view += d_offset; | |
11053 | value = psymval->value(object, rela.get_r_addend()); | |
11054 | } | |
dd93cd0a | 11055 | } |
e3deeb9c | 11056 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
11057 | } |
11058 | } | |
11059 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
11060 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
11061 | { | |
11062 | // Second instruction of a local dynamic sequence, | |
11063 | // the __tls_get_addr call | |
e3deeb9c | 11064 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
0af4fcc2 AM |
11065 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
11066 | if (!object->no_tls_marker()) | |
11067 | tls_type = target->optimize_tls_ld(); | |
dd93cd0a AM |
11068 | if (tls_type == tls::TLSOPT_TO_LE) |
11069 | { | |
89c52ae3 AM |
11070 | bool is_pcrel = false; |
11071 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
11072 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
11073 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
11074 | if (relnum < reloc_count - 1) | |
11075 | { | |
11076 | Reltype next_rela(preloc + reloc_size); | |
11077 | unsigned int r_type2 | |
11078 | = elfcpp::elf_r_type<size>(next_rela.get_r_info()); | |
11079 | if ((r_type2 == elfcpp::R_PPC64_REL24_NOTOC | |
11080 | || r_type2 == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
11081 | && next_rela.get_r_offset() == rela.get_r_offset()) | |
11082 | is_pcrel = true; | |
11083 | } | |
dd93cd0a | 11084 | Insn* iview = reinterpret_cast<Insn*>(view); |
89c52ae3 AM |
11085 | if (is_pcrel) |
11086 | { | |
11087 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
11088 | r_type = elfcpp::R_POWERPC_NONE; | |
11089 | } | |
11090 | else | |
11091 | { | |
11092 | elfcpp::Swap<32, big_endian>::writeval(iview, addi_3_3); | |
11093 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
11094 | view += d_offset; | |
11095 | value = dtp_offset; | |
11096 | } | |
e3deeb9c | 11097 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
11098 | } |
11099 | } | |
11100 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
11101 | { | |
11102 | // Second instruction of an initial exec sequence | |
0af4fcc2 AM |
11103 | bool final = gsym == NULL || gsym->final_value_is_known(); |
11104 | tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
dd93cd0a AM |
11105 | if (tls_type == tls::TLSOPT_TO_LE) |
11106 | { | |
89c52ae3 AM |
11107 | Address roff = rela.get_r_offset() & 3; |
11108 | Insn* iview = reinterpret_cast<Insn*>(view - roff); | |
dd93cd0a AM |
11109 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
11110 | unsigned int reg = size == 32 ? 2 : 13; | |
11111 | insn = at_tls_transform(insn, reg); | |
11112 | gold_assert(insn != 0); | |
89c52ae3 AM |
11113 | if (roff == 0) |
11114 | { | |
11115 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11116 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
11117 | view += d_offset; | |
11118 | value = psymval->value(object, rela.get_r_addend()); | |
11119 | } | |
11120 | else if (roff == 1) | |
11121 | { | |
11122 | // For pcrel IE to LE we already have the full offset | |
11123 | // and thus don't need an addi here. A nop or mr will do. | |
11124 | if ((insn & (0x3f << 26)) == 14 << 26) | |
11125 | { | |
11126 | // Extract regs from addi rt,ra,si. | |
11127 | unsigned int rt = (insn >> 21) & 0x1f; | |
11128 | unsigned int ra = (insn >> 16) & 0x1f; | |
11129 | if (rt == ra) | |
11130 | insn = nop; | |
11131 | else | |
11132 | { | |
11133 | // Build or ra,rs,rb with rb==rs, ie. mr ra,rs. | |
11134 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
11135 | insn |= (31u << 26) | (444u << 1); | |
11136 | } | |
11137 | } | |
11138 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11139 | r_type = elfcpp::R_POWERPC_NONE; | |
11140 | } | |
dd93cd0a AM |
11141 | } |
11142 | } | |
0cfb0717 | 11143 | else if (!has_stub_value) |
cf43a2fe | 11144 | { |
32f59844 AM |
11145 | if (!has_plt_offset && (r_type == elfcpp::R_POWERPC_PLTCALL |
11146 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC)) | |
23cedd1d AM |
11147 | { |
11148 | // PLTCALL without plt entry => convert to direct call | |
11149 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11150 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11151 | insn = (insn & 1) | b; | |
11152 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11153 | if (size == 32) | |
11154 | r_type = elfcpp::R_PPC_PLTREL24; | |
32f59844 AM |
11155 | else if (r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) |
11156 | r_type = elfcpp::R_PPC64_REL24_NOTOC; | |
23cedd1d AM |
11157 | else |
11158 | r_type = elfcpp::R_POWERPC_REL24; | |
11159 | } | |
dd93cd0a | 11160 | Address addend = 0; |
08be3224 AM |
11161 | if (!(size == 32 |
11162 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
11163 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
11164 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
11165 | || r_type == elfcpp::R_POWERPC_PLT16_HA))) | |
cf43a2fe | 11166 | addend = rela.get_r_addend(); |
c9824451 | 11167 | value = psymval->value(object, addend); |
fa40fbe4 | 11168 | unsigned int local_ent = 0; |
32f59844 | 11169 | if (size == 64 && is_branch_reloc<size>(r_type)) |
9055360d AM |
11170 | { |
11171 | if (target->abiversion() >= 2) | |
11172 | { | |
11173 | if (gsym != NULL) | |
fa40fbe4 | 11174 | local_ent = object->ppc64_local_entry_offset(gsym); |
9055360d | 11175 | else |
fa40fbe4 | 11176 | local_ent = object->ppc64_local_entry_offset(r_sym); |
9055360d AM |
11177 | } |
11178 | else | |
1611bc4a AM |
11179 | { |
11180 | unsigned int dest_shndx; | |
11181 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
11182 | &value, &dest_shndx); | |
11183 | } | |
9055360d | 11184 | } |
fa40fbe4 AM |
11185 | Address max_branch = max_branch_delta<size>(r_type); |
11186 | if (max_branch != 0 | |
11187 | && (value + local_ent - address + max_branch >= 2 * max_branch | |
32f59844 AM |
11188 | || (size == 64 |
11189 | && r_type == elfcpp::R_PPC64_REL24_NOTOC | |
11190 | && (gsym != NULL | |
11191 | ? object->ppc64_needs_toc(gsym) | |
11192 | : object->ppc64_needs_toc(r_sym))))) | |
ec661b9d AM |
11193 | { |
11194 | Stub_table<size, big_endian>* stub_table | |
11195 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
11196 | if (stub_table != NULL) |
11197 | { | |
32f59844 AM |
11198 | const typename Stub_table<size, big_endian>::Branch_stub_ent* ent |
11199 | = stub_table->find_long_branch_entry(object, value); | |
11200 | if (ent != NULL) | |
0cfb0717 | 11201 | { |
32f59844 AM |
11202 | if (ent->save_res_) |
11203 | value = (value - target->savres_section()->address() | |
11204 | + stub_table->branch_size()); | |
11205 | else | |
afd2ea23 AM |
11206 | { |
11207 | value = (stub_table->stub_address() | |
11208 | + stub_table->plt_size() | |
11209 | + ent->off_); | |
11210 | if (size == 64 | |
11211 | && r_type != elfcpp::R_PPC64_REL24_NOTOC) | |
f1e05b19 | 11212 | value += ent->tocoff_; |
afd2ea23 | 11213 | } |
0cfb0717 AM |
11214 | has_stub_value = true; |
11215 | } | |
0cfdc767 | 11216 | } |
ec661b9d | 11217 | } |
fa40fbe4 AM |
11218 | if (!has_stub_value) |
11219 | value += local_ent; | |
42cacb20 DE |
11220 | } |
11221 | ||
42cacb20 DE |
11222 | switch (r_type) |
11223 | { | |
32f59844 AM |
11224 | case elfcpp::R_PPC64_REL24_NOTOC: |
11225 | if (size == 32) | |
11226 | break; | |
11227 | // Fall through. | |
dd93cd0a AM |
11228 | case elfcpp::R_PPC64_REL64: |
11229 | case elfcpp::R_POWERPC_REL32: | |
11230 | case elfcpp::R_POWERPC_REL24: | |
11231 | case elfcpp::R_PPC_PLTREL24: | |
11232 | case elfcpp::R_PPC_LOCAL24PC: | |
11233 | case elfcpp::R_POWERPC_REL16: | |
11234 | case elfcpp::R_POWERPC_REL16_LO: | |
11235 | case elfcpp::R_POWERPC_REL16_HI: | |
11236 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 11237 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
11238 | case elfcpp::R_PPC64_REL16_HIGH: |
11239 | case elfcpp::R_PPC64_REL16_HIGHA: | |
11240 | case elfcpp::R_PPC64_REL16_HIGHER: | |
11241 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
11242 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
11243 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a AM |
11244 | case elfcpp::R_POWERPC_REL14: |
11245 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11246 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
11247 | case elfcpp::R_PPC64_PCREL34: |
11248 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11249 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11250 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
11251 | case elfcpp::R_PPC64_PCREL28: | |
87c69f97 AM |
11252 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
11253 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
11254 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
11255 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
e4dff765 AM |
11256 | case elfcpp::R_PPC64_REL16_HIGHER34: |
11257 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
11258 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
11259 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
dd93cd0a AM |
11260 | value -= address; |
11261 | break; | |
11262 | ||
42cacb20 DE |
11263 | case elfcpp::R_PPC64_TOC16: |
11264 | case elfcpp::R_PPC64_TOC16_LO: | |
11265 | case elfcpp::R_PPC64_TOC16_HI: | |
11266 | case elfcpp::R_PPC64_TOC16_HA: | |
11267 | case elfcpp::R_PPC64_TOC16_DS: | |
11268 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 11269 | // Subtract the TOC base address. |
c9269dff | 11270 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 11271 | + object->toc_base_offset()); |
42cacb20 DE |
11272 | break; |
11273 | ||
cf43a2fe AM |
11274 | case elfcpp::R_POWERPC_SECTOFF: |
11275 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
11276 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
11277 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
11278 | case elfcpp::R_PPC64_SECTOFF_DS: | |
11279 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
11280 | if (os != NULL) | |
11281 | value -= os->address(); | |
42cacb20 DE |
11282 | break; |
11283 | ||
dd93cd0a AM |
11284 | case elfcpp::R_PPC64_TPREL16_DS: |
11285 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
11286 | case elfcpp::R_PPC64_TPREL16_HIGH: |
11287 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 11288 | if (size != 64) |
f9c6b907 | 11289 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 11290 | break; |
d8e90251 | 11291 | // Fall through. |
dd93cd0a AM |
11292 | case elfcpp::R_POWERPC_TPREL16: |
11293 | case elfcpp::R_POWERPC_TPREL16_LO: | |
11294 | case elfcpp::R_POWERPC_TPREL16_HI: | |
11295 | case elfcpp::R_POWERPC_TPREL16_HA: | |
11296 | case elfcpp::R_POWERPC_TPREL: | |
11297 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
11298 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
11299 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
11300 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
89c52ae3 | 11301 | case elfcpp::R_PPC64_TPREL34: |
dd93cd0a AM |
11302 | // tls symbol values are relative to tls_segment()->vaddr() |
11303 | value -= tp_offset; | |
11304 | break; | |
11305 | ||
11306 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11307 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
11308 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
11309 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
11310 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
11311 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
11312 | if (size != 64) | |
11313 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
11314 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
11315 | break; | |
d8e90251 | 11316 | // Fall through. |
dd93cd0a AM |
11317 | case elfcpp::R_POWERPC_DTPREL16: |
11318 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
11319 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11320 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11321 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
11322 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
11323 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
89c52ae3 | 11324 | case elfcpp::R_PPC64_DTPREL34: |
dd93cd0a AM |
11325 | // tls symbol values are relative to tls_segment()->vaddr() |
11326 | value -= dtp_offset; | |
11327 | break; | |
11328 | ||
45965137 AM |
11329 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
11330 | if (gsym != NULL) | |
11331 | value += object->ppc64_local_entry_offset(gsym); | |
11332 | else | |
11333 | value += object->ppc64_local_entry_offset(r_sym); | |
11334 | break; | |
11335 | ||
42cacb20 DE |
11336 | default: |
11337 | break; | |
11338 | } | |
11339 | ||
dd93cd0a | 11340 | Insn branch_bit = 0; |
42cacb20 DE |
11341 | switch (r_type) |
11342 | { | |
dd93cd0a AM |
11343 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
11344 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11345 | branch_bit = 1 << 21; | |
d8e90251 | 11346 | // Fall through. |
dd93cd0a AM |
11347 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
11348 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
11349 | { | |
11350 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11351 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11352 | insn &= ~(1 << 21); | |
11353 | insn |= branch_bit; | |
11354 | if (this->is_isa_v2) | |
11355 | { | |
11356 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
11357 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
11358 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
11359 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
11360 | insn |= 0x02 << 21; | |
11361 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
11362 | insn |= 0x08 << 21; | |
11363 | else | |
11364 | break; | |
11365 | } | |
11366 | else | |
11367 | { | |
11368 | // Invert 'y' bit if not the default. | |
11369 | if (static_cast<Signed_address>(value) < 0) | |
11370 | insn ^= 1 << 21; | |
11371 | } | |
11372 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11373 | } | |
11374 | break; | |
11375 | ||
08be3224 AM |
11376 | case elfcpp::R_POWERPC_PLT16_HA: |
11377 | if (size == 32 | |
11378 | && !parameters->options().output_is_position_independent()) | |
11379 | { | |
11380 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
11381 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11382 | ||
11383 | // Convert addis to lis. | |
11384 | if ((insn & (0x3f << 26)) == 15u << 26 | |
11385 | && (insn & (0x1f << 16)) != 0) | |
11386 | { | |
11387 | insn &= ~(0x1f << 16); | |
11388 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11389 | } | |
11390 | } | |
11391 | break; | |
11392 | ||
dd93cd0a AM |
11393 | default: |
11394 | break; | |
11395 | } | |
11396 | ||
252dcdf4 AM |
11397 | if (gsym |
11398 | ? relative_value_is_known(gsym) | |
11399 | : relative_value_is_known(psymval)) | |
aba6bc71 | 11400 | { |
0c951c25 AM |
11401 | Insn* iview; |
11402 | Insn* iview2; | |
11403 | Insn insn; | |
11404 | uint64_t pinsn, pinsn2; | |
11405 | ||
aba6bc71 AM |
11406 | switch (r_type) |
11407 | { | |
11408 | default: | |
11409 | break; | |
11410 | ||
5edad15d AM |
11411 | // Multi-instruction sequences that access the GOT/TOC can |
11412 | // be optimized, eg. | |
11413 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
11414 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
11415 | // and | |
11416 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
11417 | // to nop; addi rb,r2,x@toc; | |
aba6bc71 AM |
11418 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
11419 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11420 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11421 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11422 | case elfcpp::R_POWERPC_GOT16_HA: | |
11423 | case elfcpp::R_PPC64_TOC16_HA: | |
252dcdf4 | 11424 | if (size == 64 && parameters->options().toc_optimize()) |
aba6bc71 | 11425 | { |
0c951c25 AM |
11426 | iview = reinterpret_cast<Insn*>(view - d_offset); |
11427 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
c9b8abb7 AM |
11428 | if ((r_type == elfcpp::R_PPC64_TOC16_HA |
11429 | && object->make_toc_relative(target, &value)) | |
11430 | || (r_type == elfcpp::R_POWERPC_GOT16_HA | |
11431 | && object->make_got_relative(target, psymval, | |
11432 | rela.get_r_addend(), | |
11433 | &value))) | |
5edad15d AM |
11434 | { |
11435 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
11436 | == ((15u << 26) | (2 << 16))); | |
11437 | } | |
11438 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
11439 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
11440 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
11441 | { |
11442 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
11443 | return true; | |
11444 | } | |
11445 | } | |
11446 | break; | |
11447 | ||
11448 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
11449 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
11450 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
11451 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
11452 | case elfcpp::R_POWERPC_GOT16_LO: | |
11453 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
11454 | case elfcpp::R_PPC64_TOC16_LO: | |
11455 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
252dcdf4 | 11456 | if (size == 64 && parameters->options().toc_optimize()) |
aba6bc71 | 11457 | { |
0c951c25 AM |
11458 | iview = reinterpret_cast<Insn*>(view - d_offset); |
11459 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
5edad15d | 11460 | bool changed = false; |
c9b8abb7 AM |
11461 | if ((r_type == elfcpp::R_PPC64_TOC16_LO_DS |
11462 | && object->make_toc_relative(target, &value)) | |
11463 | || (r_type == elfcpp::R_PPC64_GOT16_LO_DS | |
11464 | && object->make_got_relative(target, psymval, | |
11465 | rela.get_r_addend(), | |
11466 | &value))) | |
5edad15d AM |
11467 | { |
11468 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
11469 | insn ^= (14u << 26) ^ (58u << 26); | |
11470 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
11471 | changed = true; | |
11472 | } | |
11473 | if (ok_lo_toc_insn(insn, r_type) | |
11474 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
11475 | { |
11476 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
11477 | { | |
11478 | // Transform addic to addi when we change reg. | |
11479 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
11480 | insn |= (14u << 26) | (2 << 16); | |
11481 | } | |
11482 | else | |
11483 | { | |
11484 | insn &= ~(0x1f << 16); | |
11485 | insn |= 2 << 16; | |
11486 | } | |
5edad15d | 11487 | changed = true; |
aba6bc71 | 11488 | } |
5edad15d AM |
11489 | if (changed) |
11490 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
11491 | } |
11492 | break; | |
549dba71 | 11493 | |
c9b8abb7 | 11494 | case elfcpp::R_PPC64_GOT_PCREL34: |
252dcdf4 | 11495 | if (size == 64 && parameters->options().toc_optimize()) |
c9b8abb7 | 11496 | { |
0c951c25 AM |
11497 | iview = reinterpret_cast<Insn*>(view); |
11498 | pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11499 | pinsn <<= 32; | |
11500 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11501 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
c9b8abb7 AM |
11502 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) |
11503 | break; | |
11504 | ||
11505 | Address relval = psymval->value(object, rela.get_r_addend()); | |
11506 | relval -= address; | |
11507 | if (relval + (1ULL << 33) < 1ULL << 34) | |
11508 | { | |
11509 | value = relval; | |
11510 | // Replace with paddi | |
0c951c25 AM |
11511 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); |
11512 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
c9b8abb7 | 11513 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, |
0c951c25 AM |
11514 | pinsn & 0xffffffff); |
11515 | goto pcrelopt; | |
c9b8abb7 AM |
11516 | } |
11517 | } | |
11518 | break; | |
11519 | ||
0c951c25 | 11520 | case elfcpp::R_PPC64_PCREL34: |
252dcdf4 AM |
11521 | if (size == 64) |
11522 | { | |
11523 | iview = reinterpret_cast<Insn*>(view); | |
11524 | pinsn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11525 | pinsn <<= 32; | |
11526 | pinsn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11527 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
11528 | != ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
11529 | | (14ULL << 26) /* paddi */)) | |
11530 | break; | |
0c951c25 | 11531 | |
252dcdf4 AM |
11532 | pcrelopt: |
11533 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
11534 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
11535 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
11536 | if (relnum >= reloc_count - 1) | |
11537 | break; | |
0c951c25 | 11538 | |
252dcdf4 AM |
11539 | Reltype next_rela(preloc + reloc_size); |
11540 | if ((elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
11541 | != elfcpp::R_PPC64_PCREL_OPT) | |
11542 | || next_rela.get_r_offset() != rela.get_r_offset()) | |
11543 | break; | |
0c951c25 | 11544 | |
252dcdf4 AM |
11545 | Address off = next_rela.get_r_addend(); |
11546 | if (off == 0) | |
11547 | off = 8; // zero means next insn. | |
11548 | if (off + rela.get_r_offset() + 4 > view_size) | |
11549 | break; | |
0c951c25 | 11550 | |
252dcdf4 AM |
11551 | iview2 = reinterpret_cast<Insn*>(view + off); |
11552 | pinsn2 = elfcpp::Swap<32, big_endian>::readval(iview2); | |
11553 | pinsn2 <<= 32; | |
11554 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
11555 | break; | |
11556 | if (xlate_pcrel_opt(&pinsn, &pinsn2)) | |
11557 | { | |
11558 | elfcpp::Swap<32, big_endian>::writeval(iview, pinsn >> 32); | |
11559 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
11560 | pinsn & 0xffffffff); | |
11561 | elfcpp::Swap<32, big_endian>::writeval(iview2, pinsn2 >> 32); | |
11562 | } | |
11563 | } | |
0c951c25 AM |
11564 | break; |
11565 | ||
9a23f96e | 11566 | case elfcpp::R_POWERPC_TPREL16_HA: |
252dcdf4 | 11567 | if (target->tprel_opt() && value + 0x8000 < 0x10000) |
9a23f96e AM |
11568 | { |
11569 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
252dcdf4 AM |
11570 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); |
11571 | return true; | |
9a23f96e AM |
11572 | } |
11573 | break; | |
11574 | ||
11575 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
11576 | if (size == 32) | |
11577 | // R_PPC_TLSGD, R_PPC_TLSLD | |
11578 | break; | |
11579 | // Fall through. | |
11580 | case elfcpp::R_POWERPC_TPREL16_LO: | |
252dcdf4 | 11581 | if (target->tprel_opt() && value + 0x8000 < 0x10000) |
9a23f96e AM |
11582 | { |
11583 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
11584 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11585 | insn &= ~(0x1f << 16); | |
11586 | insn |= (size == 32 ? 2 : 13) << 16; | |
11587 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
11588 | } | |
11589 | break; | |
11590 | ||
549dba71 | 11591 | case elfcpp::R_PPC64_ENTRY: |
252dcdf4 | 11592 | if (size == 64) |
549dba71 | 11593 | { |
252dcdf4 AM |
11594 | value = (target->got_section()->output_section()->address() |
11595 | + object->toc_base_offset()); | |
11596 | if (value + 0x80008000 <= 0xffffffff | |
11597 | && !parameters->options().output_is_position_independent()) | |
549dba71 AM |
11598 | { |
11599 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11600 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11601 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11602 | ||
11603 | if ((insn1 & ~0xfffc) == ld_2_12 | |
11604 | && insn2 == add_2_2_12) | |
11605 | { | |
252dcdf4 | 11606 | insn1 = lis_2 + ha(value); |
549dba71 AM |
11607 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); |
11608 | insn2 = addi_2_2 + l(value); | |
11609 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
11610 | return true; | |
11611 | } | |
11612 | } | |
252dcdf4 AM |
11613 | else |
11614 | { | |
11615 | value -= address; | |
11616 | if (value + 0x80008000 <= 0xffffffff) | |
11617 | { | |
11618 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11619 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11620 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
11621 | ||
11622 | if ((insn1 & ~0xfffc) == ld_2_12 | |
11623 | && insn2 == add_2_2_12) | |
11624 | { | |
11625 | insn1 = addis_2_12 + ha(value); | |
11626 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
11627 | insn2 = addi_2_2 + l(value); | |
11628 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
11629 | return true; | |
11630 | } | |
11631 | } | |
11632 | } | |
549dba71 AM |
11633 | } |
11634 | break; | |
e3a7574e AM |
11635 | |
11636 | case elfcpp::R_POWERPC_REL16_LO: | |
11637 | // If we are generating a non-PIC executable, edit | |
11638 | // 0: addis 2,12,.TOC.-0b@ha | |
11639 | // addi 2,2,.TOC.-0b@l | |
11640 | // used by ELFv2 global entry points to set up r2, to | |
11641 | // lis 2,.TOC.@ha | |
11642 | // addi 2,2,.TOC.@l | |
11643 | // if .TOC. is in range. */ | |
252dcdf4 AM |
11644 | if (size == 64 |
11645 | && value + address - 4 + 0x80008000 <= 0xffffffff | |
f60c61e6 | 11646 | && relnum + 1 > 1 |
e3a7574e AM |
11647 | && preloc != NULL |
11648 | && target->abiversion() >= 2 | |
11649 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 11650 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
11651 | && gsym != NULL |
11652 | && strcmp(gsym->name(), ".TOC.") == 0) | |
11653 | { | |
0e123f69 | 11654 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
11655 | Reltype prev_rela(preloc - reloc_size); |
11656 | if ((prev_rela.get_r_info() | |
11657 | == elfcpp::elf_r_info<size>(r_sym, | |
11658 | elfcpp::R_POWERPC_REL16_HA)) | |
11659 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
11660 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
11661 | { | |
dcfc7dd4 | 11662 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
11663 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
11664 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
11665 | ||
11666 | if ((insn1 & 0xffff0000) == addis_2_12 | |
11667 | && (insn2 & 0xffff0000) == addi_2_2) | |
11668 | { | |
11669 | insn1 = lis_2 + ha(value + address - 4); | |
11670 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
11671 | insn2 = addi_2_2 + l(value + address - 4); | |
11672 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
11673 | if (relinfo->rr) | |
11674 | { | |
11675 | relinfo->rr->set_strategy(relnum - 1, | |
11676 | Relocatable_relocs::RELOC_SPECIAL); | |
11677 | relinfo->rr->set_strategy(relnum, | |
11678 | Relocatable_relocs::RELOC_SPECIAL); | |
11679 | } | |
11680 | return true; | |
11681 | } | |
11682 | } | |
11683 | } | |
11684 | break; | |
aba6bc71 AM |
11685 | } |
11686 | } | |
11687 | ||
f4baf0d4 | 11688 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 11689 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
11690 | switch (r_type) |
11691 | { | |
11692 | case elfcpp::R_POWERPC_ADDR32: | |
11693 | case elfcpp::R_POWERPC_UADDR32: | |
11694 | if (size == 64) | |
f4baf0d4 | 11695 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
11696 | break; |
11697 | ||
11698 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 11699 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 11700 | if (size == 64) |
f4baf0d4 | 11701 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
11702 | break; |
11703 | ||
dd93cd0a | 11704 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 11705 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
11706 | break; |
11707 | ||
b80eed39 AM |
11708 | case elfcpp::R_POWERPC_ADDR16: |
11709 | // We really should have three separate relocations, | |
11710 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
11711 | // and one for insns with 16-bit unsigned fields. | |
11712 | overflow = Reloc::CHECK_BITFIELD; | |
11713 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
11714 | overflow = Reloc::CHECK_LOW_INSN; | |
11715 | break; | |
11716 | ||
f9c6b907 AM |
11717 | case elfcpp::R_POWERPC_ADDR16_HI: |
11718 | case elfcpp::R_POWERPC_ADDR16_HA: | |
11719 | case elfcpp::R_POWERPC_GOT16_HI: | |
11720 | case elfcpp::R_POWERPC_GOT16_HA: | |
11721 | case elfcpp::R_POWERPC_PLT16_HI: | |
11722 | case elfcpp::R_POWERPC_PLT16_HA: | |
11723 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
11724 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
11725 | case elfcpp::R_PPC64_TOC16_HI: | |
11726 | case elfcpp::R_PPC64_TOC16_HA: | |
11727 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
11728 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
11729 | case elfcpp::R_POWERPC_TPREL16_HI: | |
11730 | case elfcpp::R_POWERPC_TPREL16_HA: | |
11731 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11732 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11733 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
11734 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11735 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
11736 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
11737 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
11738 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11739 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
11740 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11741 | case elfcpp::R_POWERPC_REL16_HI: | |
11742 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
11743 | if (size != 32) |
11744 | overflow = Reloc::CHECK_HIGH_INSN; | |
11745 | break; | |
11746 | ||
dd93cd0a AM |
11747 | case elfcpp::R_POWERPC_REL16: |
11748 | case elfcpp::R_PPC64_TOC16: | |
11749 | case elfcpp::R_POWERPC_GOT16: | |
11750 | case elfcpp::R_POWERPC_SECTOFF: | |
11751 | case elfcpp::R_POWERPC_TPREL16: | |
11752 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
11753 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
11754 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
11755 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
11756 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
11757 | overflow = Reloc::CHECK_LOW_INSN; | |
11758 | break; | |
11759 | ||
32f59844 AM |
11760 | case elfcpp::R_PPC64_REL24_NOTOC: |
11761 | if (size == 32) | |
11762 | break; | |
11763 | // Fall through. | |
b80eed39 AM |
11764 | case elfcpp::R_POWERPC_ADDR24: |
11765 | case elfcpp::R_POWERPC_ADDR14: | |
11766 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
11767 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
11768 | case elfcpp::R_PPC64_ADDR16_DS: | |
11769 | case elfcpp::R_POWERPC_REL24: | |
11770 | case elfcpp::R_PPC_PLTREL24: | |
11771 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
11772 | case elfcpp::R_PPC64_TPREL16_DS: |
11773 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11774 | case elfcpp::R_PPC64_TOC16_DS: | |
11775 | case elfcpp::R_PPC64_GOT16_DS: | |
11776 | case elfcpp::R_PPC64_SECTOFF_DS: | |
11777 | case elfcpp::R_POWERPC_REL14: | |
11778 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11779 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
11780 | case elfcpp::R_PPC64_D34: |
11781 | case elfcpp::R_PPC64_PCREL34: | |
11782 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11783 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11784 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
11785 | case elfcpp::R_PPC64_D28: | |
11786 | case elfcpp::R_PPC64_PCREL28: | |
89c52ae3 AM |
11787 | case elfcpp::R_PPC64_TPREL34: |
11788 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
11789 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
11790 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
11791 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
11792 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
f4baf0d4 | 11793 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 11794 | break; |
dd93cd0a | 11795 | } |
42cacb20 | 11796 | |
dcfc7dd4 | 11797 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
11798 | Insn insn = 0; |
11799 | ||
b80eed39 AM |
11800 | if (overflow == Reloc::CHECK_LOW_INSN |
11801 | || overflow == Reloc::CHECK_HIGH_INSN) | |
11802 | { | |
a680de9a | 11803 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 11804 | |
a47622ac AM |
11805 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
11806 | overflow = Reloc::CHECK_BITFIELD; | |
11807 | else if (overflow == Reloc::CHECK_LOW_INSN | |
11808 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
11809 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
11810 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
11811 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
11812 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
11813 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 11814 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
11815 | else |
11816 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
11817 | } |
11818 | ||
a680de9a | 11819 | bool maybe_dq_reloc = false; |
3ea0a085 | 11820 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 11821 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
11822 | switch (r_type) |
11823 | { | |
11824 | case elfcpp::R_POWERPC_NONE: | |
11825 | case elfcpp::R_POWERPC_TLS: | |
11826 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
11827 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
23cedd1d AM |
11828 | case elfcpp::R_POWERPC_PLTSEQ: |
11829 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
11830 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
11831 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 | 11832 | case elfcpp::R_PPC64_PCREL_OPT: |
42cacb20 DE |
11833 | break; |
11834 | ||
11835 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 11836 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 11837 | case elfcpp::R_PPC64_TOC: |
45965137 | 11838 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
11839 | Reloc::addr64(view, value); |
11840 | break; | |
11841 | ||
11842 | case elfcpp::R_POWERPC_TPREL: | |
11843 | case elfcpp::R_POWERPC_DTPREL: | |
11844 | if (size == 64) | |
11845 | Reloc::addr64(view, value); | |
11846 | else | |
3ea0a085 | 11847 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
11848 | break; |
11849 | ||
11850 | case elfcpp::R_PPC64_UADDR64: | |
11851 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
11852 | break; |
11853 | ||
11854 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 11855 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
11856 | break; |
11857 | ||
acc276d8 | 11858 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 11859 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 11860 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
11861 | break; |
11862 | ||
32f59844 AM |
11863 | case elfcpp::R_PPC64_REL24_NOTOC: |
11864 | if (size == 32) | |
11865 | goto unsupp; // R_PPC_EMB_RELSDA | |
11866 | // Fall through. | |
dd93cd0a AM |
11867 | case elfcpp::R_POWERPC_ADDR24: |
11868 | case elfcpp::R_POWERPC_REL24: | |
11869 | case elfcpp::R_PPC_PLTREL24: | |
11870 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 11871 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
11872 | break; |
11873 | ||
dd93cd0a AM |
11874 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
11875 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
11876 | case elfcpp::R_POWERPC_GOT_TPREL16: |
11877 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
11878 | if (size == 64) |
11879 | { | |
ec86f434 | 11880 | // On ppc64 these are all ds form |
a680de9a | 11881 | maybe_dq_reloc = true; |
dd93cd0a AM |
11882 | break; |
11883 | } | |
c25aa1e1 | 11884 | // Fall through. |
cf43a2fe | 11885 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 11886 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 11887 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 11888 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 11889 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
11890 | case elfcpp::R_POWERPC_TPREL16: |
11891 | case elfcpp::R_POWERPC_DTPREL16: | |
11892 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
11893 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 11894 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 11895 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 11896 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 11897 | case elfcpp::R_POWERPC_GOT16_LO: |
08be3224 | 11898 | case elfcpp::R_POWERPC_PLT16_LO: |
cf43a2fe | 11899 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
11900 | case elfcpp::R_POWERPC_TPREL16_LO: |
11901 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
11902 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
11903 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
11904 | if (size == 64) |
11905 | status = Reloc::addr16(view, value, overflow); | |
11906 | else | |
11907 | maybe_dq_reloc = true; | |
dd93cd0a AM |
11908 | break; |
11909 | ||
11910 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 11911 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
11912 | break; |
11913 | ||
f9c6b907 AM |
11914 | case elfcpp::R_PPC64_ADDR16_HIGH: |
11915 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
11916 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
11917 | if (size == 32) | |
11918 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
11919 | goto unsupp; | |
d8e90251 | 11920 | // Fall through. |
cf43a2fe | 11921 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 11922 | case elfcpp::R_POWERPC_REL16_HI: |
c432bbba | 11923 | case elfcpp::R_PPC64_REL16_HIGH: |
cf43a2fe | 11924 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 11925 | case elfcpp::R_POWERPC_GOT16_HI: |
08be3224 | 11926 | case elfcpp::R_POWERPC_PLT16_HI: |
cf43a2fe | 11927 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
11928 | case elfcpp::R_POWERPC_TPREL16_HI: |
11929 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
11930 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
11931 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
11932 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
11933 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
11934 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
11935 | break; |
11936 | ||
f9c6b907 AM |
11937 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
11938 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
11939 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
11940 | if (size == 32) | |
11941 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
11942 | goto unsupp; | |
d8e90251 | 11943 | // Fall through. |
cf43a2fe | 11944 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 11945 | case elfcpp::R_POWERPC_REL16_HA: |
c432bbba | 11946 | case elfcpp::R_PPC64_REL16_HIGHA: |
cf43a2fe | 11947 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 11948 | case elfcpp::R_POWERPC_GOT16_HA: |
08be3224 | 11949 | case elfcpp::R_POWERPC_PLT16_HA: |
cf43a2fe | 11950 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
11951 | case elfcpp::R_POWERPC_TPREL16_HA: |
11952 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11953 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11954 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
11955 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11956 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11957 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
11958 | break; |
11959 | ||
a680de9a PB |
11960 | case elfcpp::R_POWERPC_REL16DX_HA: |
11961 | status = Reloc::addr16dx_ha(view, value, overflow); | |
11962 | break; | |
11963 | ||
dd93cd0a AM |
11964 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
11965 | if (size == 32) | |
11966 | // R_PPC_EMB_NADDR16_LO | |
11967 | goto unsupp; | |
d8e90251 | 11968 | // Fall through. |
dd93cd0a | 11969 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
c432bbba | 11970 | case elfcpp::R_PPC64_REL16_HIGHER: |
dd93cd0a AM |
11971 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
11972 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
11973 | break; |
11974 | ||
dd93cd0a AM |
11975 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
11976 | if (size == 32) | |
11977 | // R_PPC_EMB_NADDR16_HI | |
11978 | goto unsupp; | |
d8e90251 | 11979 | // Fall through. |
dd93cd0a | 11980 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
c432bbba | 11981 | case elfcpp::R_PPC64_REL16_HIGHERA: |
dd93cd0a AM |
11982 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
11983 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
11984 | break; |
11985 | ||
dd93cd0a AM |
11986 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
11987 | if (size == 32) | |
11988 | // R_PPC_EMB_NADDR16_HA | |
11989 | goto unsupp; | |
d8e90251 | 11990 | // Fall through. |
dd93cd0a | 11991 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
c432bbba | 11992 | case elfcpp::R_PPC64_REL16_HIGHEST: |
dd93cd0a AM |
11993 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
11994 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
11995 | break; |
11996 | ||
dd93cd0a AM |
11997 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
11998 | if (size == 32) | |
11999 | // R_PPC_EMB_SDAI16 | |
12000 | goto unsupp; | |
d8e90251 | 12001 | // Fall through. |
dd93cd0a | 12002 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
c432bbba | 12003 | case elfcpp::R_PPC64_REL16_HIGHESTA: |
dd93cd0a AM |
12004 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
12005 | Reloc::addr16_ha3(view, value); | |
12006 | break; | |
12007 | ||
12008 | case elfcpp::R_PPC64_DTPREL16_DS: | |
12009 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
12010 | if (size == 32) | |
12011 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
12012 | goto unsupp; | |
d8e90251 | 12013 | // Fall through. |
dd93cd0a AM |
12014 | case elfcpp::R_PPC64_TPREL16_DS: |
12015 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
12016 | if (size == 32) | |
12017 | // R_PPC_TLSGD, R_PPC_TLSLD | |
12018 | break; | |
d8e90251 | 12019 | // Fall through. |
cf43a2fe AM |
12020 | case elfcpp::R_PPC64_ADDR16_DS: |
12021 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
12022 | case elfcpp::R_PPC64_TOC16_DS: |
12023 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
12024 | case elfcpp::R_PPC64_GOT16_DS: |
12025 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
08be3224 | 12026 | case elfcpp::R_PPC64_PLT16_LO_DS: |
cf43a2fe AM |
12027 | case elfcpp::R_PPC64_SECTOFF_DS: |
12028 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 12029 | maybe_dq_reloc = true; |
dd93cd0a AM |
12030 | break; |
12031 | ||
12032 | case elfcpp::R_POWERPC_ADDR14: | |
12033 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
12034 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
12035 | case elfcpp::R_POWERPC_REL14: | |
12036 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
12037 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 12038 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
12039 | break; |
12040 | ||
12041 | case elfcpp::R_POWERPC_COPY: | |
12042 | case elfcpp::R_POWERPC_GLOB_DAT: | |
12043 | case elfcpp::R_POWERPC_JMP_SLOT: | |
12044 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 12045 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
12046 | case elfcpp::R_PPC64_JMP_IREL: |
12047 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
12048 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
12049 | _("unexpected reloc %u in object file"), | |
12050 | r_type); | |
12051 | break; | |
12052 | ||
7e57d19e | 12053 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 12054 | if (size == 32) |
7e57d19e | 12055 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
12056 | goto unsupp; |
12057 | else | |
12058 | { | |
7e57d19e AM |
12059 | Symbol_location loc; |
12060 | loc.object = relinfo->object; | |
12061 | loc.shndx = relinfo->data_shndx; | |
12062 | loc.offset = rela.get_r_offset(); | |
b0d0d02b AM |
12063 | const Tocsave_loc *tocsave = target->tocsave_loc(); |
12064 | if (tocsave->find(loc) != tocsave->end()) | |
7e57d19e AM |
12065 | { |
12066 | // If we've generated plt calls using this tocsave, then | |
12067 | // the nop needs to be changed to save r2. | |
12068 | Insn* iview = reinterpret_cast<Insn*>(view); | |
12069 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
12070 | elfcpp::Swap<32, big_endian>:: | |
12071 | writeval(iview, std_2_1 + target->stk_toc()); | |
12072 | } | |
dd93cd0a AM |
12073 | } |
12074 | break; | |
12075 | ||
12076 | case elfcpp::R_PPC_EMB_SDA2I16: | |
12077 | case elfcpp::R_PPC_EMB_SDA2REL: | |
12078 | if (size == 32) | |
12079 | goto unsupp; | |
12080 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
12081 | break; |
12082 | ||
e4dff765 AM |
12083 | case elfcpp::R_PPC64_D34: |
12084 | case elfcpp::R_PPC64_D34_LO: | |
12085 | case elfcpp::R_PPC64_PCREL34: | |
12086 | case elfcpp::R_PPC64_GOT_PCREL34: | |
12087 | case elfcpp::R_PPC64_PLT_PCREL34: | |
12088 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
89c52ae3 AM |
12089 | case elfcpp::R_PPC64_TPREL34: |
12090 | case elfcpp::R_PPC64_DTPREL34: | |
87c69f97 AM |
12091 | case elfcpp::R_PPC64_GOT_TLSGD_PCREL34: |
12092 | case elfcpp::R_PPC64_GOT_TLSLD_PCREL34: | |
12093 | case elfcpp::R_PPC64_GOT_TPREL_PCREL34: | |
12094 | case elfcpp::R_PPC64_GOT_DTPREL_PCREL34: | |
e4dff765 AM |
12095 | if (size == 32) |
12096 | goto unsupp; | |
12097 | status = Reloc::addr34(view, value, overflow); | |
12098 | break; | |
12099 | ||
12100 | case elfcpp::R_PPC64_D34_HI30: | |
12101 | if (size == 32) | |
12102 | goto unsupp; | |
12103 | Reloc::addr34_hi(view, value); | |
12104 | break; | |
12105 | ||
12106 | case elfcpp::R_PPC64_D34_HA30: | |
12107 | if (size == 32) | |
12108 | goto unsupp; | |
12109 | Reloc::addr34_ha(view, value); | |
12110 | break; | |
12111 | ||
12112 | case elfcpp::R_PPC64_D28: | |
12113 | case elfcpp::R_PPC64_PCREL28: | |
12114 | if (size == 32) | |
12115 | goto unsupp; | |
12116 | status = Reloc::addr28(view, value, overflow); | |
12117 | break; | |
12118 | ||
12119 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
12120 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
12121 | if (size == 32) | |
12122 | goto unsupp; | |
12123 | Reloc::addr16_higher34(view, value); | |
12124 | break; | |
12125 | ||
12126 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
12127 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
12128 | if (size == 32) | |
12129 | goto unsupp; | |
12130 | Reloc::addr16_highera34(view, value); | |
12131 | break; | |
12132 | ||
12133 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
12134 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
12135 | if (size == 32) | |
12136 | goto unsupp; | |
12137 | Reloc::addr16_highest34(view, value); | |
12138 | break; | |
12139 | ||
12140 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
12141 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
12142 | if (size == 32) | |
12143 | goto unsupp; | |
12144 | Reloc::addr16_highesta34(view, value); | |
12145 | break; | |
12146 | ||
dd93cd0a AM |
12147 | case elfcpp::R_POWERPC_PLT32: |
12148 | case elfcpp::R_POWERPC_PLTREL32: | |
dd93cd0a AM |
12149 | case elfcpp::R_PPC_SDAREL16: |
12150 | case elfcpp::R_POWERPC_ADDR30: | |
12151 | case elfcpp::R_PPC64_PLT64: | |
12152 | case elfcpp::R_PPC64_PLTREL64: | |
12153 | case elfcpp::R_PPC64_PLTGOT16: | |
12154 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
12155 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
12156 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
dd93cd0a AM |
12157 | case elfcpp::R_PPC64_PLTGOT16_DS: |
12158 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a | 12159 | case elfcpp::R_PPC_TOC16: |
42cacb20 | 12160 | default: |
dd93cd0a | 12161 | unsupp: |
42cacb20 DE |
12162 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
12163 | _("unsupported reloc %u"), | |
12164 | r_type); | |
12165 | break; | |
12166 | } | |
a680de9a PB |
12167 | |
12168 | if (maybe_dq_reloc) | |
12169 | { | |
12170 | if (insn == 0) | |
12171 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
12172 | ||
12173 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
12174 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
12175 | && (insn & 3) == 1)) | |
12176 | status = Reloc::addr16_dq(view, value, overflow); | |
12177 | else if (size == 64 | |
12178 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
12179 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
12180 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
12181 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
12182 | status = Reloc::addr16_ds(view, value, overflow); | |
12183 | else | |
12184 | status = Reloc::addr16(view, value, overflow); | |
12185 | } | |
12186 | ||
0cfb0717 | 12187 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
12188 | && (has_stub_value |
12189 | || !(gsym != NULL | |
282c9750 | 12190 | && gsym->is_undefined() |
32f59844 | 12191 | && is_branch_reloc<size>(r_type)))) |
0cfb0717 AM |
12192 | { |
12193 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
12194 | _("relocation overflow")); | |
12195 | if (has_stub_value) | |
12196 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
12197 | } | |
42cacb20 DE |
12198 | |
12199 | return true; | |
12200 | } | |
12201 | ||
42cacb20 DE |
12202 | // Relocate section data. |
12203 | ||
12204 | template<int size, bool big_endian> | |
12205 | void | |
12206 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
12207 | const Relocate_info<size, big_endian>* relinfo, |
12208 | unsigned int sh_type, | |
12209 | const unsigned char* prelocs, | |
12210 | size_t reloc_count, | |
12211 | Output_section* output_section, | |
12212 | bool needs_special_offset_handling, | |
12213 | unsigned char* view, | |
c9269dff | 12214 | Address address, |
d83ce4e3 AM |
12215 | section_size_type view_size, |
12216 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
12217 | { |
12218 | typedef Target_powerpc<size, big_endian> Powerpc; | |
12219 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
12220 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
12221 | Powerpc_comdat_behavior; | |
4d625b70 CC |
12222 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
12223 | Classify_reloc; | |
42cacb20 DE |
12224 | |
12225 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12226 | ||
4d625b70 CC |
12227 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
12228 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
12229 | relinfo, |
12230 | this, | |
12231 | prelocs, | |
12232 | reloc_count, | |
12233 | output_section, | |
12234 | needs_special_offset_handling, | |
12235 | view, | |
12236 | address, | |
364c7fa5 ILT |
12237 | view_size, |
12238 | reloc_symbol_changes); | |
42cacb20 DE |
12239 | } |
12240 | ||
4d625b70 | 12241 | template<int size, bool big_endian> |
cf43a2fe | 12242 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 12243 | { |
cf43a2fe | 12244 | public: |
0e123f69 AM |
12245 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
12246 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
12247 | static const int sh_type = elfcpp::SHT_RELA; |
12248 | ||
12249 | // Return the symbol referred to by the relocation. | |
12250 | static inline unsigned int | |
12251 | get_r_sym(const Reltype* reloc) | |
12252 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
12253 | ||
12254 | // Return the type of the relocation. | |
12255 | static inline unsigned int | |
12256 | get_r_type(const Reltype* reloc) | |
12257 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
12258 | ||
cf43a2fe AM |
12259 | // Return the strategy to use for a local symbol which is not a |
12260 | // section symbol, given the relocation type. | |
12261 | inline Relocatable_relocs::Reloc_strategy | |
12262 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
12263 | { | |
12264 | if (r_type == 0 && r_sym == 0) | |
12265 | return Relocatable_relocs::RELOC_DISCARD; | |
12266 | return Relocatable_relocs::RELOC_COPY; | |
12267 | } | |
12268 | ||
12269 | // Return the strategy to use for a local symbol which is a section | |
12270 | // symbol, given the relocation type. | |
12271 | inline Relocatable_relocs::Reloc_strategy | |
12272 | local_section_strategy(unsigned int, Relobj*) | |
12273 | { | |
12274 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
12275 | } | |
12276 | ||
12277 | // Return the strategy to use for a global symbol, given the | |
12278 | // relocation type, the object, and the symbol index. | |
12279 | inline Relocatable_relocs::Reloc_strategy | |
12280 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
12281 | { | |
08be3224 AM |
12282 | if (size == 32 |
12283 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
12284 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
12285 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
12286 | || r_type == elfcpp::R_POWERPC_PLT16_HA)) | |
cf43a2fe AM |
12287 | return Relocatable_relocs::RELOC_SPECIAL; |
12288 | return Relocatable_relocs::RELOC_COPY; | |
12289 | } | |
12290 | }; | |
42cacb20 DE |
12291 | |
12292 | // Scan the relocs during a relocatable link. | |
12293 | ||
12294 | template<int size, bool big_endian> | |
12295 | void | |
12296 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
12297 | Symbol_table* symtab, |
12298 | Layout* layout, | |
12299 | Sized_relobj_file<size, big_endian>* object, | |
12300 | unsigned int data_shndx, | |
12301 | unsigned int sh_type, | |
12302 | const unsigned char* prelocs, | |
12303 | size_t reloc_count, | |
12304 | Output_section* output_section, | |
12305 | bool needs_special_offset_handling, | |
12306 | size_t local_symbol_count, | |
12307 | const unsigned char* plocal_symbols, | |
12308 | Relocatable_relocs* rr) | |
42cacb20 | 12309 | { |
4d625b70 CC |
12310 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
12311 | ||
42cacb20 DE |
12312 | gold_assert(sh_type == elfcpp::SHT_RELA); |
12313 | ||
4d625b70 | 12314 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
12315 | symtab, |
12316 | layout, | |
12317 | object, | |
12318 | data_shndx, | |
12319 | prelocs, | |
12320 | reloc_count, | |
12321 | output_section, | |
12322 | needs_special_offset_handling, | |
12323 | local_symbol_count, | |
12324 | plocal_symbols, | |
12325 | rr); | |
12326 | } | |
12327 | ||
4d625b70 CC |
12328 | // Scan the relocs for --emit-relocs. |
12329 | ||
12330 | template<int size, bool big_endian> | |
12331 | void | |
12332 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
12333 | Symbol_table* symtab, | |
12334 | Layout* layout, | |
12335 | Sized_relobj_file<size, big_endian>* object, | |
12336 | unsigned int data_shndx, | |
12337 | unsigned int sh_type, | |
12338 | const unsigned char* prelocs, | |
12339 | size_t reloc_count, | |
12340 | Output_section* output_section, | |
12341 | bool needs_special_offset_handling, | |
12342 | size_t local_symbol_count, | |
12343 | const unsigned char* plocal_syms, | |
12344 | Relocatable_relocs* rr) | |
12345 | { | |
12346 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
12347 | Classify_reloc; | |
12348 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
12349 | Emit_relocs_strategy; | |
12350 | ||
12351 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12352 | ||
12353 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
12354 | symtab, | |
12355 | layout, | |
12356 | object, | |
12357 | data_shndx, | |
12358 | prelocs, | |
12359 | reloc_count, | |
12360 | output_section, | |
12361 | needs_special_offset_handling, | |
12362 | local_symbol_count, | |
12363 | plocal_syms, | |
12364 | rr); | |
12365 | } | |
12366 | ||
7404fe1b | 12367 | // Emit relocations for a section. |
dd93cd0a AM |
12368 | // This is a modified version of the function by the same name in |
12369 | // target-reloc.h. Using relocate_special_relocatable for | |
12370 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
12371 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
12372 | |
12373 | template<int size, bool big_endian> | |
12374 | void | |
7404fe1b | 12375 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
12376 | const Relocate_info<size, big_endian>* relinfo, |
12377 | unsigned int sh_type, | |
12378 | const unsigned char* prelocs, | |
12379 | size_t reloc_count, | |
12380 | Output_section* output_section, | |
62fe925a | 12381 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 12382 | unsigned char*, |
dd93cd0a | 12383 | Address view_address, |
cf43a2fe | 12384 | section_size_type, |
42cacb20 DE |
12385 | unsigned char* reloc_view, |
12386 | section_size_type reloc_view_size) | |
12387 | { | |
12388 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
12389 | ||
0e123f69 AM |
12390 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
12391 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
12392 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
12393 | // Offset from start of insn to d-field reloc. |
12394 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
12395 | |
12396 | Powerpc_relobj<size, big_endian>* const object | |
12397 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
12398 | const unsigned int local_count = object->local_symbol_count(); | |
12399 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 12400 | Address got2_addend = 0; |
cf43a2fe | 12401 | if (got2_shndx != 0) |
c9269dff AM |
12402 | { |
12403 | got2_addend = object->get_output_section_offset(got2_shndx); | |
12404 | gold_assert(got2_addend != invalid_address); | |
12405 | } | |
cf43a2fe | 12406 | |
033bfb73 CC |
12407 | const bool relocatable = parameters->options().relocatable(); |
12408 | ||
cf43a2fe | 12409 | unsigned char* pwrite = reloc_view; |
7404fe1b | 12410 | bool zap_next = false; |
cf43a2fe AM |
12411 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
12412 | { | |
91a65d2f | 12413 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
12414 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
12415 | continue; | |
12416 | ||
12417 | Reltype reloc(prelocs); | |
12418 | Reltype_write reloc_write(pwrite); | |
12419 | ||
7404fe1b | 12420 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 12421 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
12422 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
12423 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
12424 | const unsigned int orig_r_sym = r_sym; | |
12425 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
12426 | = reloc.get_r_addend(); | |
12427 | const Symbol* gsym = NULL; | |
12428 | ||
12429 | if (zap_next) | |
12430 | { | |
12431 | // We could arrange to discard these and other relocs for | |
12432 | // tls optimised sequences in the strategy methods, but for | |
12433 | // now do as BFD ld does. | |
12434 | r_type = elfcpp::R_POWERPC_NONE; | |
12435 | zap_next = false; | |
12436 | } | |
cf43a2fe AM |
12437 | |
12438 | // Get the new symbol index. | |
9215b98b | 12439 | Output_section* os = NULL; |
cf43a2fe AM |
12440 | if (r_sym < local_count) |
12441 | { | |
12442 | switch (strategy) | |
12443 | { | |
12444 | case Relocatable_relocs::RELOC_COPY: | |
12445 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 12446 | if (r_sym != 0) |
dd93cd0a | 12447 | { |
7404fe1b AM |
12448 | r_sym = object->symtab_index(r_sym); |
12449 | gold_assert(r_sym != -1U); | |
dd93cd0a | 12450 | } |
cf43a2fe AM |
12451 | break; |
12452 | ||
12453 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
12454 | { | |
12455 | // We are adjusting a section symbol. We need to find | |
12456 | // the symbol table index of the section symbol for | |
12457 | // the output section corresponding to input section | |
12458 | // in which this symbol is defined. | |
12459 | gold_assert(r_sym < local_count); | |
12460 | bool is_ordinary; | |
12461 | unsigned int shndx = | |
12462 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
12463 | gold_assert(is_ordinary); | |
9215b98b | 12464 | os = object->output_section(shndx); |
cf43a2fe AM |
12465 | gold_assert(os != NULL); |
12466 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 12467 | r_sym = os->symtab_index(); |
cf43a2fe AM |
12468 | } |
12469 | break; | |
12470 | ||
12471 | default: | |
12472 | gold_unreachable(); | |
12473 | } | |
12474 | } | |
12475 | else | |
12476 | { | |
7404fe1b | 12477 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
12478 | gold_assert(gsym != NULL); |
12479 | if (gsym->is_forwarder()) | |
12480 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
12481 | ||
12482 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 12483 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
12484 | } |
12485 | ||
12486 | // Get the new offset--the location in the output section where | |
12487 | // this relocation should be applied. | |
cf43a2fe | 12488 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 12489 | offset += offset_in_output_section; |
cf43a2fe AM |
12490 | else |
12491 | { | |
c9269dff AM |
12492 | section_offset_type sot_offset = |
12493 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 12494 | section_offset_type new_sot_offset = |
c9269dff AM |
12495 | output_section->output_offset(object, relinfo->data_shndx, |
12496 | sot_offset); | |
cf43a2fe | 12497 | gold_assert(new_sot_offset != -1); |
7404fe1b | 12498 | offset = new_sot_offset; |
cf43a2fe AM |
12499 | } |
12500 | ||
dd93cd0a AM |
12501 | // In an object file, r_offset is an offset within the section. |
12502 | // In an executable or dynamic object, generated by | |
12503 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 12504 | if (!relocatable) |
dd93cd0a | 12505 | { |
7404fe1b | 12506 | offset += view_address; |
dd93cd0a | 12507 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 12508 | offset -= offset_in_output_section; |
dd93cd0a AM |
12509 | } |
12510 | ||
cf43a2fe | 12511 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
12512 | if (strategy == Relocatable_relocs::RELOC_COPY) |
12513 | ; | |
12514 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
12515 | { | |
7404fe1b | 12516 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
033bfb73 CC |
12517 | addend = psymval->value(object, addend); |
12518 | // In a relocatable link, the symbol value is relative to | |
12519 | // the start of the output section. For a non-relocatable | |
12520 | // link, we need to adjust the addend. | |
12521 | if (!relocatable) | |
12522 | { | |
12523 | gold_assert(os != NULL); | |
12524 | addend -= os->address(); | |
12525 | } | |
cf43a2fe AM |
12526 | } |
12527 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
12528 | { | |
e3a7574e AM |
12529 | if (size == 32) |
12530 | { | |
12531 | if (addend >= 32768) | |
12532 | addend += got2_addend; | |
12533 | } | |
12534 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
12535 | { | |
12536 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 12537 | addend -= d_offset; |
e3a7574e AM |
12538 | } |
12539 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
12540 | { | |
12541 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 12542 | addend -= d_offset + 4; |
e3a7574e | 12543 | } |
cf43a2fe AM |
12544 | } |
12545 | else | |
12546 | gold_unreachable(); | |
12547 | ||
033bfb73 | 12548 | if (!relocatable) |
7404fe1b AM |
12549 | { |
12550 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
12551 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
12552 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
12553 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
12554 | { | |
12555 | // First instruction of a global dynamic sequence, | |
12556 | // arg setup insn. | |
0af4fcc2 AM |
12557 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
12558 | if (!object->no_tls_marker()) | |
12559 | { | |
12560 | bool final = gsym == NULL || gsym->final_value_is_known(); | |
12561 | tls_type = this->optimize_tls_gd(final); | |
12562 | } | |
12563 | switch (tls_type) | |
7404fe1b AM |
12564 | { |
12565 | case tls::TLSOPT_TO_IE: | |
12566 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
12567 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
12568 | break; | |
12569 | case tls::TLSOPT_TO_LE: | |
12570 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
12571 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
12572 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12573 | else | |
12574 | { | |
12575 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12576 | offset -= d_offset; |
7404fe1b AM |
12577 | } |
12578 | break; | |
12579 | default: | |
12580 | break; | |
12581 | } | |
12582 | } | |
12583 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
12584 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
12585 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
12586 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
12587 | { | |
12588 | // First instruction of a local dynamic sequence, | |
12589 | // arg setup insn. | |
0af4fcc2 AM |
12590 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
12591 | if (!object->no_tls_marker()) | |
12592 | tls_type = this->optimize_tls_ld(); | |
12593 | if (tls_type == tls::TLSOPT_TO_LE) | |
7404fe1b AM |
12594 | { |
12595 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
12596 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
12597 | { | |
12598 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12599 | const Output_section* os = relinfo->layout->tls_segment() | |
12600 | ->first_section(); | |
12601 | gold_assert(os != NULL); | |
12602 | gold_assert(os->needs_symtab_index()); | |
12603 | r_sym = os->symtab_index(); | |
12604 | addend = dtp_offset; | |
12605 | } | |
12606 | else | |
12607 | { | |
12608 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12609 | offset -= d_offset; |
7404fe1b AM |
12610 | } |
12611 | } | |
12612 | } | |
12613 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
12614 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
12615 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
12616 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
12617 | { | |
12618 | // First instruction of initial exec sequence. | |
0af4fcc2 | 12619 | bool final = gsym == NULL || gsym->final_value_is_known(); |
7404fe1b AM |
12620 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) |
12621 | { | |
12622 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
12623 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
12624 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
12625 | else | |
12626 | { | |
12627 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 12628 | offset -= d_offset; |
7404fe1b AM |
12629 | } |
12630 | } | |
12631 | } | |
12632 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
12633 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
12634 | { | |
12635 | // Second instruction of a global dynamic sequence, | |
12636 | // the __tls_get_addr call | |
0af4fcc2 AM |
12637 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
12638 | if (!object->no_tls_marker()) | |
12639 | { | |
12640 | bool final = gsym == NULL || gsym->final_value_is_known(); | |
12641 | tls_type = this->optimize_tls_gd(final); | |
12642 | } | |
12643 | switch (tls_type) | |
7404fe1b AM |
12644 | { |
12645 | case tls::TLSOPT_TO_IE: | |
12646 | r_type = elfcpp::R_POWERPC_NONE; | |
12647 | zap_next = true; | |
12648 | break; | |
12649 | case tls::TLSOPT_TO_LE: | |
12650 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12651 | offset += d_offset; |
7404fe1b AM |
12652 | zap_next = true; |
12653 | break; | |
12654 | default: | |
12655 | break; | |
12656 | } | |
12657 | } | |
12658 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
12659 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
12660 | { | |
12661 | // Second instruction of a local dynamic sequence, | |
12662 | // the __tls_get_addr call | |
0af4fcc2 AM |
12663 | tls::Tls_optimization tls_type = tls::TLSOPT_NONE; |
12664 | if (!object->no_tls_marker()) | |
12665 | tls_type = this->optimize_tls_ld(); | |
12666 | if (tls_type == tls::TLSOPT_TO_LE) | |
7404fe1b AM |
12667 | { |
12668 | const Output_section* os = relinfo->layout->tls_segment() | |
12669 | ->first_section(); | |
12670 | gold_assert(os != NULL); | |
12671 | gold_assert(os->needs_symtab_index()); | |
12672 | r_sym = os->symtab_index(); | |
12673 | addend = dtp_offset; | |
12674 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12675 | offset += d_offset; |
7404fe1b AM |
12676 | zap_next = true; |
12677 | } | |
12678 | } | |
12679 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
12680 | { | |
12681 | // Second instruction of an initial exec sequence | |
0af4fcc2 | 12682 | bool final = gsym == NULL || gsym->final_value_is_known(); |
7404fe1b AM |
12683 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) |
12684 | { | |
12685 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 12686 | offset += d_offset; |
7404fe1b AM |
12687 | } |
12688 | } | |
12689 | } | |
12690 | ||
12691 | reloc_write.put_r_offset(offset); | |
12692 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
12693 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
12694 | |
12695 | pwrite += reloc_size; | |
12696 | } | |
12697 | ||
12698 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
12699 | == reloc_view_size); | |
42cacb20 DE |
12700 | } |
12701 | ||
ec661b9d | 12702 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
12703 | // treatment. This is how we support equality comparisons of function |
12704 | // pointers across shared library boundaries, as described in the | |
12705 | // processor specific ABI supplement. | |
12706 | ||
12707 | template<int size, bool big_endian> | |
12708 | uint64_t | |
12709 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
12710 | { | |
cf43a2fe AM |
12711 | if (size == 32) |
12712 | { | |
12713 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
12714 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12715 | p != this->stub_tables_.end(); | |
12716 | ++p) | |
12717 | { | |
7e57d19e AM |
12718 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12719 | = (*p)->find_plt_call_entry(gsym); | |
12720 | if (ent != NULL) | |
12721 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12722 | } |
c9824451 | 12723 | } |
9055360d AM |
12724 | else if (this->abiversion() >= 2) |
12725 | { | |
faa2211d AM |
12726 | Address off = this->glink_section()->find_global_entry(gsym); |
12727 | if (off != invalid_address) | |
9055360d AM |
12728 | return this->glink_section()->global_entry_address() + off; |
12729 | } | |
ec661b9d | 12730 | gold_unreachable(); |
c9824451 AM |
12731 | } |
12732 | ||
12733 | // Return the PLT address to use for a local symbol. | |
12734 | template<int size, bool big_endian> | |
12735 | uint64_t | |
12736 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
12737 | const Relobj* object, | |
12738 | unsigned int symndx) const | |
12739 | { | |
12740 | if (size == 32) | |
12741 | { | |
12742 | const Sized_relobj<size, big_endian>* relobj | |
12743 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
12744 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12745 | p != this->stub_tables_.end(); | |
12746 | ++p) | |
12747 | { | |
7e57d19e AM |
12748 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12749 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
12750 | if (ent != NULL) | |
12751 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12752 | } |
c9824451 | 12753 | } |
ec661b9d | 12754 | gold_unreachable(); |
c9824451 AM |
12755 | } |
12756 | ||
12757 | // Return the PLT address to use for a global symbol. | |
12758 | template<int size, bool big_endian> | |
12759 | uint64_t | |
12760 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
12761 | const Symbol* gsym) const | |
12762 | { | |
12763 | if (size == 32) | |
12764 | { | |
ec661b9d AM |
12765 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
12766 | p != this->stub_tables_.end(); | |
12767 | ++p) | |
12768 | { | |
7e57d19e AM |
12769 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
12770 | = (*p)->find_plt_call_entry(gsym); | |
12771 | if (ent != NULL) | |
12772 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 12773 | } |
cf43a2fe | 12774 | } |
9055360d AM |
12775 | else if (this->abiversion() >= 2) |
12776 | { | |
faa2211d AM |
12777 | Address off = this->glink_section()->find_global_entry(gsym); |
12778 | if (off != invalid_address) | |
9055360d AM |
12779 | return this->glink_section()->global_entry_address() + off; |
12780 | } | |
ec661b9d | 12781 | gold_unreachable(); |
42cacb20 DE |
12782 | } |
12783 | ||
bd73a62d AM |
12784 | // Return the offset to use for the GOT_INDX'th got entry which is |
12785 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
12786 | template<int size, bool big_endian> | |
12787 | int64_t | |
12788 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
12789 | const Relobj* object, | |
12790 | unsigned int symndx, | |
12791 | unsigned int got_indx) const | |
12792 | { | |
12793 | const Powerpc_relobj<size, big_endian>* ppc_object | |
12794 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
12795 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
12796 | { | |
12797 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
12798 | got_type <= GOT_TYPE_TPREL; | |
12799 | got_type = Got_type(got_type + 1)) | |
12800 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
12801 | { | |
12802 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
12803 | if (got_type == GOT_TYPE_TLSGD) | |
12804 | off += size / 8; | |
12805 | if (off == got_indx * (size / 8)) | |
12806 | { | |
12807 | if (got_type == GOT_TYPE_TPREL) | |
12808 | return -tp_offset; | |
12809 | else | |
12810 | return -dtp_offset; | |
12811 | } | |
12812 | } | |
12813 | } | |
12814 | gold_unreachable(); | |
12815 | } | |
12816 | ||
12817 | // Return the offset to use for the GOT_INDX'th got entry which is | |
12818 | // for global tls symbol GSYM. | |
12819 | template<int size, bool big_endian> | |
12820 | int64_t | |
12821 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
12822 | Symbol* gsym, | |
12823 | unsigned int got_indx) const | |
12824 | { | |
12825 | if (gsym->type() == elfcpp::STT_TLS) | |
12826 | { | |
12827 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
12828 | got_type <= GOT_TYPE_TPREL; | |
12829 | got_type = Got_type(got_type + 1)) | |
12830 | if (gsym->has_got_offset(got_type)) | |
12831 | { | |
12832 | unsigned int off = gsym->got_offset(got_type); | |
12833 | if (got_type == GOT_TYPE_TLSGD) | |
12834 | off += size / 8; | |
12835 | if (off == got_indx * (size / 8)) | |
12836 | { | |
12837 | if (got_type == GOT_TYPE_TPREL) | |
12838 | return -tp_offset; | |
12839 | else | |
12840 | return -dtp_offset; | |
12841 | } | |
12842 | } | |
12843 | } | |
12844 | gold_unreachable(); | |
12845 | } | |
12846 | ||
42cacb20 DE |
12847 | // The selector for powerpc object files. |
12848 | ||
12849 | template<int size, bool big_endian> | |
12850 | class Target_selector_powerpc : public Target_selector | |
12851 | { | |
12852 | public: | |
12853 | Target_selector_powerpc() | |
edc27beb AM |
12854 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
12855 | size, big_endian, | |
03ef7571 ILT |
12856 | (size == 64 |
12857 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
12858 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
12859 | (size == 64 | |
12860 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
12861 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
12862 | { } |
12863 | ||
2e702c99 RM |
12864 | virtual Target* |
12865 | do_instantiate_target() | |
7f055c20 | 12866 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
12867 | }; |
12868 | ||
12869 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
12870 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
12871 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
12872 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
12873 | ||
decdd3bc AM |
12874 | // Instantiate these constants for -O0 |
12875 | template<int size, bool big_endian> | |
9055360d AM |
12876 | const typename Output_data_glink<size, big_endian>::Address |
12877 | Output_data_glink<size, big_endian>::invalid_address; | |
12878 | template<int size, bool big_endian> | |
decdd3bc AM |
12879 | const typename Stub_table<size, big_endian>::Address |
12880 | Stub_table<size, big_endian>::invalid_address; | |
12881 | template<int size, bool big_endian> | |
12882 | const typename Target_powerpc<size, big_endian>::Address | |
12883 | Target_powerpc<size, big_endian>::invalid_address; | |
12884 | ||
42cacb20 | 12885 | } // End anonymous namespace. |