Commit | Line | Data |
---|---|---|
42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
82704155 | 3 | // Copyright (C) 2008-2019 Free Software Foundation, Inc. |
42cacb20 DE |
4 | // Written by David S. Miller <davem@davemloft.net> |
5 | // and David Edelsohn <edelsohn@gnu.org> | |
6 | ||
7 | // This file is part of gold. | |
8 | ||
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; either version 3 of the License, or | |
12 | // (at your option) any later version. | |
13 | ||
14 | // This program is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License | |
20 | // along with this program; if not, write to the Free Software | |
21 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | // MA 02110-1301, USA. | |
23 | ||
24 | #include "gold.h" | |
25 | ||
dc3714f3 | 26 | #include <set> |
ec661b9d | 27 | #include <algorithm> |
42cacb20 | 28 | #include "elfcpp.h" |
9d5781f8 | 29 | #include "dwarf.h" |
42cacb20 DE |
30 | #include "parameters.h" |
31 | #include "reloc.h" | |
32 | #include "powerpc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
37 | #include "copy-relocs.h" | |
38 | #include "target.h" | |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
f345227a | 43 | #include "gc.h" |
724436fc | 44 | #include "attributes.h" |
42cacb20 DE |
45 | |
46 | namespace | |
47 | { | |
48 | ||
49 | using namespace gold; | |
50 | ||
51 | template<int size, bool big_endian> | |
52 | class Output_data_plt_powerpc; | |
53 | ||
ec661b9d AM |
54 | template<int size, bool big_endian> |
55 | class Output_data_brlt_powerpc; | |
56 | ||
cf43a2fe AM |
57 | template<int size, bool big_endian> |
58 | class Output_data_got_powerpc; | |
59 | ||
60 | template<int size, bool big_endian> | |
61 | class Output_data_glink; | |
62 | ||
ec661b9d AM |
63 | template<int size, bool big_endian> |
64 | class Stub_table; | |
65 | ||
d49044c7 AM |
66 | template<int size, bool big_endian> |
67 | class Output_data_save_res; | |
68 | ||
a3e60ddb AM |
69 | template<int size, bool big_endian> |
70 | class Target_powerpc; | |
71 | ||
72 | struct Stub_table_owner | |
73 | { | |
dc60b26d AM |
74 | Stub_table_owner() |
75 | : output_section(NULL), owner(NULL) | |
76 | { } | |
77 | ||
a3e60ddb AM |
78 | Output_section* output_section; |
79 | const Output_section::Input_section* owner; | |
80 | }; | |
81 | ||
32f59844 | 82 | template<int size> |
23cedd1d AM |
83 | inline bool is_branch_reloc(unsigned int); |
84 | ||
85 | template<int size> | |
86 | inline bool is_plt16_reloc(unsigned int); | |
4d9aa155 | 87 | |
590b87ff AM |
88 | // Counter incremented on every Powerpc_relobj constructed. |
89 | static uint32_t object_id = 0; | |
90 | ||
cf43a2fe AM |
91 | template<int size, bool big_endian> |
92 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
93 | { | |
94 | public: | |
dd93cd0a | 95 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
96 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
97 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 98 | |
cf43a2fe AM |
99 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
100 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
101 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
590b87ff AM |
102 | uniq_(object_id++), special_(0), relatoc_(0), toc_(0), |
103 | has_small_toc_reloc_(false), opd_valid_(false), | |
104 | e_flags_(ehdr.get_e_flags()), no_toc_opt_(), opd_ent_(), | |
724436fc AM |
105 | access_from_map_(), has14_(), stub_table_index_(), st_other_(), |
106 | attributes_section_data_(NULL) | |
b4f7960d AM |
107 | { |
108 | this->set_abiversion(0); | |
109 | } | |
cf43a2fe AM |
110 | |
111 | ~Powerpc_relobj() | |
724436fc | 112 | { delete this->attributes_section_data_; } |
cf43a2fe | 113 | |
b4f7960d AM |
114 | // Read the symbols then set up st_other vector. |
115 | void | |
116 | do_read_symbols(Read_symbols_data*); | |
117 | ||
5edad15d AM |
118 | // Arrange to always relocate .toc first. |
119 | virtual void | |
120 | do_relocate_sections( | |
121 | const Symbol_table* symtab, const Layout* layout, | |
122 | const unsigned char* pshdrs, Output_file* of, | |
123 | typename Sized_relobj_file<size, big_endian>::Views* pviews); | |
124 | ||
125 | // The .toc section index. | |
126 | unsigned int | |
127 | toc_shndx() const | |
128 | { | |
129 | return this->toc_; | |
130 | } | |
131 | ||
132 | // Mark .toc entry at OFF as not optimizable. | |
133 | void | |
134 | set_no_toc_opt(Address off) | |
135 | { | |
136 | if (this->no_toc_opt_.empty()) | |
137 | this->no_toc_opt_.resize(this->section_size(this->toc_shndx()) | |
138 | / (size / 8)); | |
139 | off /= size / 8; | |
140 | if (off < this->no_toc_opt_.size()) | |
141 | this->no_toc_opt_[off] = true; | |
142 | } | |
143 | ||
144 | // Mark the entire .toc as not optimizable. | |
145 | void | |
146 | set_no_toc_opt() | |
147 | { | |
148 | this->no_toc_opt_.resize(1); | |
149 | this->no_toc_opt_[0] = true; | |
150 | } | |
151 | ||
152 | // Return true if code using the .toc entry at OFF should not be edited. | |
153 | bool | |
154 | no_toc_opt(Address off) const | |
155 | { | |
156 | if (this->no_toc_opt_.empty()) | |
157 | return false; | |
158 | off /= size / 8; | |
159 | if (off >= this->no_toc_opt_.size()) | |
160 | return true; | |
161 | return this->no_toc_opt_[off]; | |
162 | } | |
163 | ||
c9269dff | 164 | // The .got2 section shndx. |
cf43a2fe AM |
165 | unsigned int |
166 | got2_shndx() const | |
167 | { | |
168 | if (size == 32) | |
c9269dff | 169 | return this->special_; |
cf43a2fe AM |
170 | else |
171 | return 0; | |
172 | } | |
173 | ||
c9269dff AM |
174 | // The .opd section shndx. |
175 | unsigned int | |
176 | opd_shndx() const | |
177 | { | |
178 | if (size == 32) | |
179 | return 0; | |
180 | else | |
181 | return this->special_; | |
182 | } | |
183 | ||
184 | // Init OPD entry arrays. | |
185 | void | |
186 | init_opd(size_t opd_size) | |
187 | { | |
188 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 189 | this->opd_ent_.resize(count); |
c9269dff AM |
190 | } |
191 | ||
192 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
193 | unsigned int |
194 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
195 | { |
196 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
197 | gold_assert(ndx < this->opd_ent_.size()); |
198 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 199 | if (value != NULL) |
bfdfa4cd AM |
200 | *value = this->opd_ent_[ndx].off; |
201 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
202 | } |
203 | ||
204 | // Set section and offset of function entry for .opd + R_OFF. | |
205 | void | |
dd93cd0a | 206 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
207 | { |
208 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
209 | gold_assert(ndx < this->opd_ent_.size()); |
210 | this->opd_ent_[ndx].shndx = shndx; | |
211 | this->opd_ent_[ndx].off = value; | |
212 | } | |
213 | ||
214 | // Return discard flag for .opd + R_OFF. | |
215 | bool | |
216 | get_opd_discard(Address r_off) const | |
217 | { | |
218 | size_t ndx = this->opd_ent_ndx(r_off); | |
219 | gold_assert(ndx < this->opd_ent_.size()); | |
220 | return this->opd_ent_[ndx].discard; | |
221 | } | |
222 | ||
223 | // Set discard flag for .opd + R_OFF. | |
224 | void | |
225 | set_opd_discard(Address r_off) | |
226 | { | |
227 | size_t ndx = this->opd_ent_ndx(r_off); | |
228 | gold_assert(ndx < this->opd_ent_.size()); | |
229 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
230 | } |
231 | ||
e81fea4d AM |
232 | bool |
233 | opd_valid() const | |
234 | { return this->opd_valid_; } | |
235 | ||
236 | void | |
237 | set_opd_valid() | |
238 | { this->opd_valid_ = true; } | |
239 | ||
c9269dff AM |
240 | // Examine .rela.opd to build info about function entry points. |
241 | void | |
242 | scan_opd_relocs(size_t reloc_count, | |
243 | const unsigned char* prelocs, | |
244 | const unsigned char* plocal_syms); | |
245 | ||
5edad15d AM |
246 | // Returns true if a code sequence loading a TOC entry can be |
247 | // converted into code calculating a TOC pointer relative offset. | |
248 | bool | |
249 | make_toc_relative(Target_powerpc<size, big_endian>* target, | |
250 | Address* value); | |
251 | ||
c9b8abb7 AM |
252 | bool |
253 | make_got_relative(Target_powerpc<size, big_endian>* target, | |
254 | const Symbol_value<size>* psymval, | |
255 | Address addend, | |
256 | Address* value); | |
257 | ||
26a4e9cb AM |
258 | // Perform the Sized_relobj_file method, then set up opd info from |
259 | // .opd relocs. | |
c9269dff AM |
260 | void |
261 | do_read_relocs(Read_relocs_data*); | |
262 | ||
cf43a2fe AM |
263 | bool |
264 | do_find_special_sections(Read_symbols_data* sd); | |
265 | ||
ec4dbad3 AM |
266 | // Adjust this local symbol value. Return false if the symbol |
267 | // should be discarded from the output file. | |
268 | bool | |
269 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
270 | { | |
271 | if (size == 64 && this->opd_shndx() != 0) | |
272 | { | |
273 | bool is_ordinary; | |
274 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
275 | return true; | |
276 | if (this->get_opd_discard(lv->input_value())) | |
277 | return false; | |
278 | } | |
279 | return true; | |
280 | } | |
281 | ||
6c77229c AM |
282 | Access_from* |
283 | access_from_map() | |
284 | { return &this->access_from_map_; } | |
285 | ||
286 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
287 | // section at DST_OFF. | |
288 | void | |
efc6fa12 | 289 | add_reference(Relobj* src_obj, |
6c77229c AM |
290 | unsigned int src_indx, |
291 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
292 | { | |
293 | Section_id src_id(src_obj, src_indx); | |
294 | this->access_from_map_[dst_off].insert(src_id); | |
295 | } | |
296 | ||
297 | // Add a reference to the code section specified by the .opd entry | |
298 | // at DST_OFF | |
299 | void | |
300 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
301 | { | |
302 | size_t ndx = this->opd_ent_ndx(dst_off); | |
303 | if (ndx >= this->opd_ent_.size()) | |
304 | this->opd_ent_.resize(ndx + 1); | |
305 | this->opd_ent_[ndx].gc_mark = true; | |
306 | } | |
307 | ||
308 | void | |
309 | process_gc_mark(Symbol_table* symtab) | |
310 | { | |
311 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
312 | if (this->opd_ent_[i].gc_mark) | |
313 | { | |
314 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 315 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
316 | } |
317 | } | |
318 | ||
dd93cd0a AM |
319 | // Return offset in output GOT section that this object will use |
320 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
321 | Address | |
322 | toc_base_offset() const | |
323 | { return 0x8000; } | |
324 | ||
d8f5a274 AM |
325 | void |
326 | set_has_small_toc_reloc() | |
327 | { has_small_toc_reloc_ = true; } | |
328 | ||
329 | bool | |
330 | has_small_toc_reloc() const | |
331 | { return has_small_toc_reloc_; } | |
332 | ||
ec661b9d AM |
333 | void |
334 | set_has_14bit_branch(unsigned int shndx) | |
335 | { | |
336 | if (shndx >= this->has14_.size()) | |
337 | this->has14_.resize(shndx + 1); | |
338 | this->has14_[shndx] = true; | |
339 | } | |
340 | ||
341 | bool | |
342 | has_14bit_branch(unsigned int shndx) const | |
343 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
344 | ||
345 | void | |
a3e60ddb | 346 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 347 | { |
a3e60ddb | 348 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 349 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 350 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
351 | } |
352 | ||
353 | Stub_table<size, big_endian>* | |
354 | stub_table(unsigned int shndx) | |
355 | { | |
a3e60ddb AM |
356 | if (shndx < this->stub_table_index_.size()) |
357 | { | |
358 | Target_powerpc<size, big_endian>* target | |
359 | = static_cast<Target_powerpc<size, big_endian>*>( | |
360 | parameters->sized_target<size, big_endian>()); | |
361 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
362 | if (indx < target->stub_tables().size()) |
363 | return target->stub_tables()[indx]; | |
a3e60ddb | 364 | } |
ec661b9d AM |
365 | return NULL; |
366 | } | |
367 | ||
a3e60ddb AM |
368 | void |
369 | clear_stub_table() | |
370 | { | |
371 | this->stub_table_index_.clear(); | |
372 | } | |
373 | ||
590b87ff AM |
374 | uint32_t |
375 | uniq() const | |
376 | { return this->uniq_; } | |
377 | ||
b4f7960d AM |
378 | int |
379 | abiversion() const | |
380 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
381 | ||
382 | // Set ABI version for input and output | |
383 | void | |
384 | set_abiversion(int ver); | |
385 | ||
7ee7ff70 AM |
386 | unsigned int |
387 | st_other (unsigned int symndx) const | |
388 | { | |
389 | return this->st_other_[symndx]; | |
390 | } | |
391 | ||
b4f7960d AM |
392 | unsigned int |
393 | ppc64_local_entry_offset(const Symbol* sym) const | |
394 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
395 | ||
396 | unsigned int | |
397 | ppc64_local_entry_offset(unsigned int symndx) const | |
398 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
399 | ||
32f59844 AM |
400 | bool |
401 | ppc64_needs_toc(const Symbol* sym) const | |
402 | { return sym->nonvis() > 1 << 3; } | |
403 | ||
404 | bool | |
405 | ppc64_needs_toc(unsigned int symndx) const | |
406 | { return this->st_other_[symndx] > 1 << 5; } | |
407 | ||
724436fc AM |
408 | // The contents of the .gnu.attributes section if there is one. |
409 | const Attributes_section_data* | |
410 | attributes_section_data() const | |
411 | { return this->attributes_section_data_; } | |
412 | ||
cf43a2fe | 413 | private: |
bfdfa4cd AM |
414 | struct Opd_ent |
415 | { | |
416 | unsigned int shndx; | |
c6de8ed4 AM |
417 | bool discard : 1; |
418 | bool gc_mark : 1; | |
26a4e9cb | 419 | Address off; |
bfdfa4cd AM |
420 | }; |
421 | ||
422 | // Return index into opd_ent_ array for .opd entry at OFF. | |
423 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
424 | // apart when the language doesn't use the last 8-byte word, the | |
425 | // environment pointer. Thus dividing the entry section offset by | |
426 | // 16 will give an index into opd_ent_ that works for either layout | |
427 | // of .opd. (It leaves some elements of the vector unused when .opd | |
428 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
429 | // until relocations are processed, and in any case it is possible | |
430 | // for an object to have some entries spaced 16 bytes apart and | |
431 | // others 24 bytes apart.) | |
c9269dff AM |
432 | size_t |
433 | opd_ent_ndx(size_t off) const | |
434 | { return off >> 4;} | |
435 | ||
590b87ff AM |
436 | // Per object unique identifier |
437 | uint32_t uniq_; | |
438 | ||
c9269dff AM |
439 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. |
440 | unsigned int special_; | |
bfdfa4cd | 441 | |
5edad15d AM |
442 | // For 64-bit the .rela.toc and .toc section shdnx. |
443 | unsigned int relatoc_; | |
444 | unsigned int toc_; | |
445 | ||
d8f5a274 AM |
446 | // For 64-bit, whether this object uses small model relocs to access |
447 | // the toc. | |
448 | bool has_small_toc_reloc_; | |
449 | ||
bfdfa4cd AM |
450 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
451 | // vector is valid. The flag could be made atomic and set in | |
452 | // do_read_relocs with memory_order_release and then tested with | |
453 | // memory_order_acquire, potentially resulting in fewer entries in | |
454 | // access_from_map_. | |
455 | bool opd_valid_; | |
456 | ||
590b87ff AM |
457 | // Header e_flags |
458 | elfcpp::Elf_Word e_flags_; | |
459 | ||
460 | // For 64-bit, an array with one entry per 64-bit word in the .toc | |
461 | // section, set if accesses using that word cannot be optimised. | |
462 | std::vector<bool> no_toc_opt_; | |
463 | ||
c9269dff AM |
464 | // The first 8-byte word of an OPD entry gives the address of the |
465 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 466 | // relocation on this word. The following vector records the |
c9269dff | 467 | // section and offset specified by these relocations. |
bfdfa4cd AM |
468 | std::vector<Opd_ent> opd_ent_; |
469 | ||
e81fea4d | 470 | // References made to this object's .opd section when running |
bfdfa4cd AM |
471 | // gc_process_relocs for another object, before the opd_ent_ vector |
472 | // is valid for this object. | |
e81fea4d | 473 | Access_from access_from_map_; |
ec661b9d AM |
474 | |
475 | // Whether input section has a 14-bit branch reloc. | |
476 | std::vector<bool> has14_; | |
477 | ||
478 | // The stub table to use for a given input section. | |
a3e60ddb | 479 | std::vector<unsigned int> stub_table_index_; |
b4f7960d | 480 | |
b4f7960d AM |
481 | // ELF st_other field for local symbols. |
482 | std::vector<unsigned char> st_other_; | |
724436fc AM |
483 | |
484 | // Object attributes if there is a .gnu.attributes section. | |
485 | Attributes_section_data* attributes_section_data_; | |
cf43a2fe AM |
486 | }; |
487 | ||
dc3714f3 AM |
488 | template<int size, bool big_endian> |
489 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
490 | { | |
491 | public: | |
492 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
493 | ||
494 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
495 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
496 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
724436fc AM |
497 | opd_shndx_(0), e_flags_(ehdr.get_e_flags()), opd_ent_(), |
498 | attributes_section_data_(NULL) | |
b4f7960d AM |
499 | { |
500 | this->set_abiversion(0); | |
501 | } | |
dc3714f3 AM |
502 | |
503 | ~Powerpc_dynobj() | |
724436fc | 504 | { delete this->attributes_section_data_; } |
dc3714f3 AM |
505 | |
506 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
507 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
508 | void | |
509 | do_read_symbols(Read_symbols_data*); | |
510 | ||
511 | // The .opd section shndx. | |
512 | unsigned int | |
513 | opd_shndx() const | |
514 | { | |
515 | return this->opd_shndx_; | |
516 | } | |
517 | ||
518 | // The .opd section address. | |
519 | Address | |
520 | opd_address() const | |
521 | { | |
522 | return this->opd_address_; | |
523 | } | |
524 | ||
525 | // Init OPD entry arrays. | |
526 | void | |
527 | init_opd(size_t opd_size) | |
528 | { | |
529 | size_t count = this->opd_ent_ndx(opd_size); | |
530 | this->opd_ent_.resize(count); | |
531 | } | |
532 | ||
533 | // Return section and offset of function entry for .opd + R_OFF. | |
534 | unsigned int | |
535 | get_opd_ent(Address r_off, Address* value = NULL) const | |
536 | { | |
537 | size_t ndx = this->opd_ent_ndx(r_off); | |
538 | gold_assert(ndx < this->opd_ent_.size()); | |
539 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
540 | if (value != NULL) | |
541 | *value = this->opd_ent_[ndx].off; | |
542 | return this->opd_ent_[ndx].shndx; | |
543 | } | |
544 | ||
545 | // Set section and offset of function entry for .opd + R_OFF. | |
546 | void | |
547 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
548 | { | |
549 | size_t ndx = this->opd_ent_ndx(r_off); | |
550 | gold_assert(ndx < this->opd_ent_.size()); | |
551 | this->opd_ent_[ndx].shndx = shndx; | |
552 | this->opd_ent_[ndx].off = value; | |
553 | } | |
554 | ||
b4f7960d AM |
555 | int |
556 | abiversion() const | |
557 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
558 | ||
559 | // Set ABI version for input and output. | |
560 | void | |
561 | set_abiversion(int ver); | |
562 | ||
724436fc AM |
563 | // The contents of the .gnu.attributes section if there is one. |
564 | const Attributes_section_data* | |
565 | attributes_section_data() const | |
566 | { return this->attributes_section_data_; } | |
567 | ||
dc3714f3 AM |
568 | private: |
569 | // Used to specify extent of executable sections. | |
570 | struct Sec_info | |
571 | { | |
572 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
573 | : start(start_), len(len_), shndx(shndx_) | |
574 | { } | |
575 | ||
576 | bool | |
577 | operator<(const Sec_info& that) const | |
578 | { return this->start < that.start; } | |
579 | ||
580 | Address start; | |
581 | Address len; | |
582 | unsigned int shndx; | |
583 | }; | |
584 | ||
585 | struct Opd_ent | |
586 | { | |
587 | unsigned int shndx; | |
588 | Address off; | |
589 | }; | |
590 | ||
591 | // Return index into opd_ent_ array for .opd entry at OFF. | |
592 | size_t | |
593 | opd_ent_ndx(size_t off) const | |
594 | { return off >> 4;} | |
595 | ||
596 | // For 64-bit the .opd section shndx and address. | |
597 | unsigned int opd_shndx_; | |
598 | Address opd_address_; | |
599 | ||
590b87ff AM |
600 | // Header e_flags |
601 | elfcpp::Elf_Word e_flags_; | |
602 | ||
dc3714f3 AM |
603 | // The first 8-byte word of an OPD entry gives the address of the |
604 | // entry point of the function. Records the section and offset | |
605 | // corresponding to the address. Note that in dynamic objects, | |
606 | // offset is *not* relative to the section. | |
607 | std::vector<Opd_ent> opd_ent_; | |
724436fc AM |
608 | |
609 | // Object attributes if there is a .gnu.attributes section. | |
610 | Attributes_section_data* attributes_section_data_; | |
dc3714f3 AM |
611 | }; |
612 | ||
5edad15d AM |
613 | // Powerpc_copy_relocs class. Needed to peek at dynamic relocs the |
614 | // base class will emit. | |
615 | ||
616 | template<int sh_type, int size, bool big_endian> | |
617 | class Powerpc_copy_relocs : public Copy_relocs<sh_type, size, big_endian> | |
618 | { | |
619 | public: | |
620 | Powerpc_copy_relocs() | |
621 | : Copy_relocs<sh_type, size, big_endian>(elfcpp::R_POWERPC_COPY) | |
622 | { } | |
623 | ||
624 | // Emit any saved relocations which turn out to be needed. This is | |
625 | // called after all the relocs have been scanned. | |
626 | void | |
627 | emit(Output_data_reloc<sh_type, true, size, big_endian>*); | |
628 | }; | |
629 | ||
42cacb20 DE |
630 | template<int size, bool big_endian> |
631 | class Target_powerpc : public Sized_target<size, big_endian> | |
632 | { | |
633 | public: | |
d83ce4e3 AM |
634 | typedef |
635 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 636 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 637 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
7e57d19e | 638 | typedef Unordered_set<Symbol_location, Symbol_location_hash> Tocsave_loc; |
c9269dff | 639 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
640 | // Offset of tp and dtp pointers from start of TLS block. |
641 | static const Address tp_offset = 0x7000; | |
642 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
643 | |
644 | Target_powerpc() | |
645 | : Sized_target<size, big_endian>(&powerpc_info), | |
2d7ad24e | 646 | got_(NULL), plt_(NULL), iplt_(NULL), lplt_(NULL), brlt_section_(NULL), |
5edad15d | 647 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(), |
43819297 | 648 | tlsld_got_offset_(-1U), |
7e57d19e | 649 | stub_tables_(), branch_lookup_table_(), branch_info_(), tocsave_loc_(), |
e4dff765 | 650 | powerxx_stubs_(false), plt_thread_safe_(false), plt_localentry0_(false), |
7ee7ff70 | 651 | plt_localentry0_init_(false), has_localentry0_(false), |
34e0882b | 652 | has_tls_get_addr_opt_(false), |
7ee7ff70 | 653 | relax_failed_(false), relax_fail_count_(0), |
34e0882b | 654 | stub_group_size_(0), savres_section_(0), |
724436fc AM |
655 | tls_get_addr_(NULL), tls_get_addr_opt_(NULL), |
656 | attributes_section_data_(NULL), | |
657 | last_fp_(NULL), last_ld_(NULL), last_vec_(NULL), last_struct_(NULL) | |
42cacb20 DE |
658 | { |
659 | } | |
660 | ||
2e702c99 | 661 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
662 | // garbage collection. |
663 | void | |
ad0f2072 | 664 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
665 | Layout* layout, |
666 | Sized_relobj_file<size, big_endian>* object, | |
667 | unsigned int data_shndx, | |
668 | unsigned int sh_type, | |
669 | const unsigned char* prelocs, | |
670 | size_t reloc_count, | |
671 | Output_section* output_section, | |
672 | bool needs_special_offset_handling, | |
673 | size_t local_symbol_count, | |
674 | const unsigned char* plocal_symbols); | |
6d03d481 | 675 | |
42cacb20 DE |
676 | // Scan the relocations to look for symbol adjustments. |
677 | void | |
ad0f2072 | 678 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 679 | Layout* layout, |
6fa2a40b | 680 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
681 | unsigned int data_shndx, |
682 | unsigned int sh_type, | |
683 | const unsigned char* prelocs, | |
684 | size_t reloc_count, | |
685 | Output_section* output_section, | |
686 | bool needs_special_offset_handling, | |
687 | size_t local_symbol_count, | |
688 | const unsigned char* plocal_symbols); | |
921b5322 AM |
689 | |
690 | // Map input .toc section to output .got section. | |
691 | const char* | |
692 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
693 | { | |
694 | if (size == 64 && strcmp(name, ".toc") == 0) | |
695 | { | |
696 | *plen = 4; | |
697 | return ".got"; | |
698 | } | |
699 | return NULL; | |
700 | } | |
701 | ||
f3a0ed29 AM |
702 | // Provide linker defined save/restore functions. |
703 | void | |
704 | define_save_restore_funcs(Layout*, Symbol_table*); | |
705 | ||
ec661b9d AM |
706 | // No stubs unless a final link. |
707 | bool | |
708 | do_may_relax() const | |
709 | { return !parameters->options().relocatable(); } | |
710 | ||
711 | bool | |
712 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
713 | ||
9d5781f8 AM |
714 | void |
715 | do_plt_fde_location(const Output_data*, unsigned char*, | |
716 | uint64_t*, off_t*) const; | |
717 | ||
ec661b9d AM |
718 | // Stash info about branches, for stub generation. |
719 | void | |
720 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
721 | unsigned int data_shndx, Address r_offset, | |
722 | unsigned int r_type, unsigned int r_sym, Address addend) | |
723 | { | |
724 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
725 | this->branch_info_.push_back(info); | |
726 | if (r_type == elfcpp::R_POWERPC_REL14 | |
727 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
728 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
729 | ppc_object->set_has_14bit_branch(data_shndx); | |
730 | } | |
731 | ||
7e57d19e AM |
732 | // Return whether the last branch is a plt call, and if so, mark the |
733 | // branch as having an R_PPC64_TOCSAVE. | |
734 | bool | |
735 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
736 | unsigned int data_shndx, Address r_offset, Symbol_table* symtab) | |
737 | { | |
738 | return (size == 64 | |
739 | && !this->branch_info_.empty() | |
740 | && this->branch_info_.back().mark_pltcall(ppc_object, data_shndx, | |
741 | r_offset, this, symtab)); | |
742 | } | |
743 | ||
744 | // Say the given location, that of a nop in a function prologue with | |
745 | // an R_PPC64_TOCSAVE reloc, will be used to save r2. | |
746 | // R_PPC64_TOCSAVE relocs on nops following calls point at this nop. | |
747 | void | |
748 | add_tocsave(Powerpc_relobj<size, big_endian>* ppc_object, | |
749 | unsigned int shndx, Address offset) | |
750 | { | |
751 | Symbol_location loc; | |
752 | loc.object = ppc_object; | |
753 | loc.shndx = shndx; | |
754 | loc.offset = offset; | |
755 | this->tocsave_loc_.insert(loc); | |
756 | } | |
757 | ||
758 | // Accessor | |
759 | const Tocsave_loc | |
760 | tocsave_loc() const | |
761 | { | |
762 | return this->tocsave_loc_; | |
763 | } | |
764 | ||
f43ba157 AM |
765 | void |
766 | do_define_standard_symbols(Symbol_table*, Layout*); | |
767 | ||
42cacb20 DE |
768 | // Finalize the sections. |
769 | void | |
f59f41f3 | 770 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
771 | |
772 | // Return the value to use for a dynamic which requires special | |
773 | // treatment. | |
774 | uint64_t | |
775 | do_dynsym_value(const Symbol*) const; | |
776 | ||
c9824451 AM |
777 | // Return the PLT address to use for a local symbol. |
778 | uint64_t | |
779 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
780 | ||
781 | // Return the PLT address to use for a global symbol. | |
782 | uint64_t | |
783 | do_plt_address_for_global(const Symbol*) const; | |
784 | ||
bd73a62d AM |
785 | // Return the offset to use for the GOT_INDX'th got entry which is |
786 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
787 | int64_t | |
788 | do_tls_offset_for_local(const Relobj* object, | |
789 | unsigned int symndx, | |
790 | unsigned int got_indx) const; | |
791 | ||
792 | // Return the offset to use for the GOT_INDX'th got entry which is | |
793 | // for global tls symbol GSYM. | |
794 | int64_t | |
795 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
796 | ||
dc3714f3 AM |
797 | void |
798 | do_function_location(Symbol_location*) const; | |
799 | ||
4d9aa155 AM |
800 | bool |
801 | do_can_check_for_function_pointers() const | |
802 | { return true; } | |
803 | ||
bbec1a5d AM |
804 | // Adjust -fsplit-stack code which calls non-split-stack code. |
805 | void | |
806 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
807 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 808 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
809 | unsigned char* view, section_size_type view_size, |
810 | std::string* from, std::string* to) const; | |
811 | ||
42cacb20 DE |
812 | // Relocate a section. |
813 | void | |
814 | relocate_section(const Relocate_info<size, big_endian>*, | |
815 | unsigned int sh_type, | |
816 | const unsigned char* prelocs, | |
817 | size_t reloc_count, | |
818 | Output_section* output_section, | |
819 | bool needs_special_offset_handling, | |
820 | unsigned char* view, | |
c9269dff | 821 | Address view_address, |
364c7fa5 ILT |
822 | section_size_type view_size, |
823 | const Reloc_symbol_changes*); | |
42cacb20 DE |
824 | |
825 | // Scan the relocs during a relocatable link. | |
826 | void | |
ad0f2072 | 827 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 828 | Layout* layout, |
6fa2a40b | 829 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
830 | unsigned int data_shndx, |
831 | unsigned int sh_type, | |
832 | const unsigned char* prelocs, | |
833 | size_t reloc_count, | |
834 | Output_section* output_section, | |
835 | bool needs_special_offset_handling, | |
836 | size_t local_symbol_count, | |
837 | const unsigned char* plocal_symbols, | |
838 | Relocatable_relocs*); | |
839 | ||
4d625b70 CC |
840 | // Scan the relocs for --emit-relocs. |
841 | void | |
842 | emit_relocs_scan(Symbol_table* symtab, | |
843 | Layout* layout, | |
844 | Sized_relobj_file<size, big_endian>* object, | |
845 | unsigned int data_shndx, | |
846 | unsigned int sh_type, | |
847 | const unsigned char* prelocs, | |
848 | size_t reloc_count, | |
849 | Output_section* output_section, | |
850 | bool needs_special_offset_handling, | |
851 | size_t local_symbol_count, | |
852 | const unsigned char* plocal_syms, | |
853 | Relocatable_relocs* rr); | |
854 | ||
7404fe1b | 855 | // Emit relocations for a section. |
42cacb20 | 856 | void |
7404fe1b AM |
857 | relocate_relocs(const Relocate_info<size, big_endian>*, |
858 | unsigned int sh_type, | |
859 | const unsigned char* prelocs, | |
860 | size_t reloc_count, | |
861 | Output_section* output_section, | |
62fe925a RM |
862 | typename elfcpp::Elf_types<size>::Elf_Off |
863 | offset_in_output_section, | |
7404fe1b AM |
864 | unsigned char*, |
865 | Address view_address, | |
866 | section_size_type, | |
867 | unsigned char* reloc_view, | |
868 | section_size_type reloc_view_size); | |
42cacb20 DE |
869 | |
870 | // Return whether SYM is defined by the ABI. | |
871 | bool | |
9c2d0ef9 | 872 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 873 | { |
cf43a2fe | 874 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
875 | } |
876 | ||
877 | // Return the size of the GOT section. | |
878 | section_size_type | |
0e70b911 | 879 | got_size() const |
42cacb20 DE |
880 | { |
881 | gold_assert(this->got_ != NULL); | |
882 | return this->got_->data_size(); | |
883 | } | |
884 | ||
cf43a2fe AM |
885 | // Get the PLT section. |
886 | const Output_data_plt_powerpc<size, big_endian>* | |
887 | plt_section() const | |
888 | { | |
889 | gold_assert(this->plt_ != NULL); | |
890 | return this->plt_; | |
891 | } | |
892 | ||
e5d5f5ed AM |
893 | // Get the IPLT section. |
894 | const Output_data_plt_powerpc<size, big_endian>* | |
895 | iplt_section() const | |
896 | { | |
897 | gold_assert(this->iplt_ != NULL); | |
898 | return this->iplt_; | |
899 | } | |
900 | ||
2d7ad24e AM |
901 | // Get the LPLT section. |
902 | const Output_data_plt_powerpc<size, big_endian>* | |
903 | lplt_section() const | |
904 | { | |
905 | return this->lplt_; | |
906 | } | |
907 | ||
08be3224 AM |
908 | // Return the plt offset and section for the given global sym. |
909 | Address | |
910 | plt_off(const Symbol* gsym, | |
911 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
912 | { | |
913 | if (gsym->type() == elfcpp::STT_GNU_IFUNC | |
914 | && gsym->can_use_relative_reloc(false)) | |
915 | *sec = this->iplt_section(); | |
916 | else | |
917 | *sec = this->plt_section(); | |
918 | return gsym->plt_offset(); | |
919 | } | |
920 | ||
921 | // Return the plt offset and section for the given local sym. | |
922 | Address | |
923 | plt_off(const Sized_relobj_file<size, big_endian>* relobj, | |
924 | unsigned int local_sym_index, | |
925 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
926 | { | |
2d7ad24e AM |
927 | const Symbol_value<size>* lsym = relobj->local_symbol(local_sym_index); |
928 | if (lsym->is_ifunc_symbol()) | |
929 | *sec = this->iplt_section(); | |
930 | else | |
931 | *sec = this->lplt_section(); | |
08be3224 AM |
932 | return relobj->local_plt_offset(local_sym_index); |
933 | } | |
934 | ||
cf43a2fe AM |
935 | // Get the .glink section. |
936 | const Output_data_glink<size, big_endian>* | |
937 | glink_section() const | |
938 | { | |
939 | gold_assert(this->glink_ != NULL); | |
940 | return this->glink_; | |
941 | } | |
942 | ||
9055360d AM |
943 | Output_data_glink<size, big_endian>* |
944 | glink_section() | |
945 | { | |
946 | gold_assert(this->glink_ != NULL); | |
947 | return this->glink_; | |
948 | } | |
949 | ||
9d5781f8 AM |
950 | bool has_glink() const |
951 | { return this->glink_ != NULL; } | |
952 | ||
cf43a2fe AM |
953 | // Get the GOT section. |
954 | const Output_data_got_powerpc<size, big_endian>* | |
955 | got_section() const | |
956 | { | |
957 | gold_assert(this->got_ != NULL); | |
958 | return this->got_; | |
959 | } | |
960 | ||
26a4e9cb AM |
961 | // Get the GOT section, creating it if necessary. |
962 | Output_data_got_powerpc<size, big_endian>* | |
963 | got_section(Symbol_table*, Layout*); | |
964 | ||
cf43a2fe AM |
965 | Object* |
966 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
967 | const elfcpp::Ehdr<size, big_endian>&); | |
968 | ||
0e70b911 CC |
969 | // Return the number of entries in the GOT. |
970 | unsigned int | |
971 | got_entry_count() const | |
972 | { | |
973 | if (this->got_ == NULL) | |
974 | return 0; | |
975 | return this->got_size() / (size / 8); | |
976 | } | |
977 | ||
978 | // Return the number of entries in the PLT. | |
979 | unsigned int | |
980 | plt_entry_count() const; | |
981 | ||
982 | // Return the offset of the first non-reserved PLT entry. | |
983 | unsigned int | |
b4f7960d AM |
984 | first_plt_entry_offset() const |
985 | { | |
986 | if (size == 32) | |
987 | return 0; | |
988 | if (this->abiversion() >= 2) | |
989 | return 16; | |
990 | return 24; | |
991 | } | |
0e70b911 CC |
992 | |
993 | // Return the size of each PLT entry. | |
994 | unsigned int | |
b4f7960d AM |
995 | plt_entry_size() const |
996 | { | |
997 | if (size == 32) | |
998 | return 4; | |
999 | if (this->abiversion() >= 2) | |
1000 | return 8; | |
1001 | return 24; | |
1002 | } | |
0e70b911 | 1003 | |
d49044c7 AM |
1004 | Output_data_save_res<size, big_endian>* |
1005 | savres_section() const | |
1006 | { | |
1007 | return this->savres_section_; | |
1008 | } | |
1009 | ||
e81fea4d AM |
1010 | // Add any special sections for this symbol to the gc work list. |
1011 | // For powerpc64, this adds the code section of a function | |
1012 | // descriptor. | |
1013 | void | |
1014 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
1015 | ||
1016 | // Handle target specific gc actions when adding a gc reference from | |
1017 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
1018 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
1019 | // section of a function descriptor. | |
1020 | void | |
1021 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 1022 | Relobj* src_obj, |
e81fea4d | 1023 | unsigned int src_shndx, |
efc6fa12 | 1024 | Relobj* dst_obj, |
e81fea4d AM |
1025 | unsigned int dst_shndx, |
1026 | Address dst_off) const; | |
1027 | ||
ec661b9d AM |
1028 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
1029 | const Stub_tables& | |
1030 | stub_tables() const | |
1031 | { return this->stub_tables_; } | |
1032 | ||
1033 | const Output_data_brlt_powerpc<size, big_endian>* | |
1034 | brlt_section() const | |
1035 | { return this->brlt_section_; } | |
1036 | ||
1037 | void | |
1038 | add_branch_lookup_table(Address to) | |
1039 | { | |
1040 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
1041 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
1042 | } | |
1043 | ||
1044 | Address | |
1045 | find_branch_lookup_table(Address to) | |
1046 | { | |
1047 | typename Branch_lookup_table::const_iterator p | |
1048 | = this->branch_lookup_table_.find(to); | |
1049 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
1050 | } | |
1051 | ||
1052 | void | |
1053 | write_branch_lookup_table(unsigned char *oview) | |
1054 | { | |
1055 | for (typename Branch_lookup_table::const_iterator p | |
1056 | = this->branch_lookup_table_.begin(); | |
1057 | p != this->branch_lookup_table_.end(); | |
1058 | ++p) | |
1059 | { | |
4d5effb9 | 1060 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
1061 | } |
1062 | } | |
1063 | ||
590b87ff AM |
1064 | // Wrapper used after relax to define a local symbol in output data, |
1065 | // from the end if value < 0. | |
1066 | void | |
1067 | define_local(Symbol_table* symtab, const char* name, | |
1068 | Output_data* od, Address value, unsigned int symsize) | |
1069 | { | |
1070 | Symbol* sym | |
1071 | = symtab->define_in_output_data(name, NULL, Symbol_table::PREDEFINED, | |
1072 | od, value, symsize, elfcpp::STT_NOTYPE, | |
1073 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, 0, | |
1074 | static_cast<Signed_address>(value) < 0, | |
1075 | false); | |
1076 | // We are creating this symbol late, so need to fix up things | |
1077 | // done early in Layout::finalize. | |
1078 | sym->set_dynsym_index(-1U); | |
1079 | } | |
1080 | ||
e4dff765 AM |
1081 | bool |
1082 | powerxx_stubs() const | |
1083 | { return this->powerxx_stubs_; } | |
1084 | ||
1085 | void | |
1086 | set_powerxx_stubs() | |
1087 | { | |
1088 | this->powerxx_stubs_ = true; | |
1089 | } | |
1090 | ||
9e69ed50 AM |
1091 | bool |
1092 | plt_thread_safe() const | |
1093 | { return this->plt_thread_safe_; } | |
1094 | ||
7ee7ff70 AM |
1095 | bool |
1096 | plt_localentry0() const | |
1097 | { return this->plt_localentry0_; } | |
1098 | ||
1099 | void | |
1100 | set_has_localentry0() | |
1101 | { | |
1102 | this->has_localentry0_ = true; | |
1103 | } | |
1104 | ||
1105 | bool | |
1106 | is_elfv2_localentry0(const Symbol* gsym) const | |
1107 | { | |
1108 | return (size == 64 | |
1109 | && this->abiversion() >= 2 | |
1110 | && this->plt_localentry0() | |
1111 | && gsym->type() == elfcpp::STT_FUNC | |
1112 | && gsym->is_defined() | |
565ed01a AM |
1113 | && gsym->nonvis() >> 3 == 0 |
1114 | && !gsym->non_zero_localentry()); | |
7ee7ff70 AM |
1115 | } |
1116 | ||
1117 | bool | |
1118 | is_elfv2_localentry0(const Sized_relobj_file<size, big_endian>* object, | |
1119 | unsigned int r_sym) const | |
1120 | { | |
1121 | const Powerpc_relobj<size, big_endian>* ppc_object | |
1122 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
1123 | ||
1124 | if (size == 64 | |
1125 | && this->abiversion() >= 2 | |
1126 | && this->plt_localentry0() | |
1127 | && ppc_object->st_other(r_sym) >> 5 == 0) | |
1128 | { | |
1129 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
1130 | bool is_ordinary; | |
1131 | if (!psymval->is_ifunc_symbol() | |
1132 | && psymval->input_shndx(&is_ordinary) != elfcpp::SHN_UNDEF | |
1133 | && is_ordinary) | |
1134 | return true; | |
1135 | } | |
1136 | return false; | |
1137 | } | |
1138 | ||
565ed01a AM |
1139 | // Remember any symbols seen with non-zero localentry, even those |
1140 | // not providing a definition | |
1141 | bool | |
1142 | resolve(Symbol* to, const elfcpp::Sym<size, big_endian>& sym, Object*, | |
1143 | const char*) | |
1144 | { | |
1145 | if (size == 64) | |
1146 | { | |
1147 | unsigned char st_other = sym.get_st_other(); | |
1148 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1149 | to->set_non_zero_localentry(); | |
1150 | } | |
1151 | // We haven't resolved anything, continue normal processing. | |
1152 | return false; | |
1153 | } | |
1154 | ||
b4f7960d | 1155 | int |
aacb3b6d | 1156 | abiversion() const |
b4f7960d AM |
1157 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } |
1158 | ||
1159 | void | |
aacb3b6d | 1160 | set_abiversion(int ver) |
b4f7960d AM |
1161 | { |
1162 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
1163 | flags &= ~elfcpp::EF_PPC64_ABI; | |
1164 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
1165 | this->set_processor_specific_flags(flags); | |
1166 | } | |
1167 | ||
34e0882b AM |
1168 | Symbol* |
1169 | tls_get_addr_opt() const | |
1170 | { return this->tls_get_addr_opt_; } | |
1171 | ||
1172 | Symbol* | |
1173 | tls_get_addr() const | |
1174 | { return this->tls_get_addr_; } | |
1175 | ||
1176 | // If optimizing __tls_get_addr calls, whether this is the | |
1177 | // "__tls_get_addr" symbol. | |
1178 | bool | |
1179 | is_tls_get_addr_opt(const Symbol* gsym) const | |
1180 | { | |
1181 | return this->tls_get_addr_opt_ && (gsym == this->tls_get_addr_ | |
1182 | || gsym == this->tls_get_addr_opt_); | |
1183 | } | |
1184 | ||
1185 | bool | |
1186 | replace_tls_get_addr(const Symbol* gsym) const | |
1187 | { return this->tls_get_addr_opt_ && gsym == this->tls_get_addr_; } | |
1188 | ||
1189 | void | |
1190 | set_has_tls_get_addr_opt() | |
1191 | { this->has_tls_get_addr_opt_ = true; } | |
1192 | ||
aacb3b6d | 1193 | // Offset to toc save stack slot |
b4f7960d | 1194 | int |
aacb3b6d | 1195 | stk_toc() const |
b4f7960d AM |
1196 | { return this->abiversion() < 2 ? 40 : 24; } |
1197 | ||
34e0882b AM |
1198 | // Offset to linker save stack slot. ELFv2 doesn't have a linker word, |
1199 | // so use the CR save slot. Used only by __tls_get_addr call stub, | |
1200 | // relying on __tls_get_addr not saving CR itself. | |
1201 | int | |
1202 | stk_linker() const | |
1203 | { return this->abiversion() < 2 ? 32 : 8; } | |
1204 | ||
724436fc AM |
1205 | // Merge object attributes from input object with those in the output. |
1206 | void | |
1207 | merge_object_attributes(const char*, const Attributes_section_data*); | |
1208 | ||
42cacb20 DE |
1209 | private: |
1210 | ||
e3deeb9c AM |
1211 | class Track_tls |
1212 | { | |
1213 | public: | |
1214 | enum Tls_get_addr | |
1215 | { | |
1216 | NOT_EXPECTED = 0, | |
1217 | EXPECTED = 1, | |
1218 | SKIP = 2, | |
1219 | NORMAL = 3 | |
1220 | }; | |
1221 | ||
1222 | Track_tls() | |
aacb3b6d | 1223 | : tls_get_addr_state_(NOT_EXPECTED), |
e3deeb9c AM |
1224 | relinfo_(NULL), relnum_(0), r_offset_(0) |
1225 | { } | |
1226 | ||
1227 | ~Track_tls() | |
1228 | { | |
aacb3b6d | 1229 | if (this->tls_get_addr_state_ != NOT_EXPECTED) |
e3deeb9c AM |
1230 | this->missing(); |
1231 | } | |
1232 | ||
1233 | void | |
1234 | missing(void) | |
1235 | { | |
1236 | if (this->relinfo_ != NULL) | |
1237 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
1238 | _("missing expected __tls_get_addr call")); | |
1239 | } | |
1240 | ||
1241 | void | |
1242 | expect_tls_get_addr_call( | |
1243 | const Relocate_info<size, big_endian>* relinfo, | |
1244 | size_t relnum, | |
1245 | Address r_offset) | |
1246 | { | |
aacb3b6d | 1247 | this->tls_get_addr_state_ = EXPECTED; |
e3deeb9c AM |
1248 | this->relinfo_ = relinfo; |
1249 | this->relnum_ = relnum; | |
1250 | this->r_offset_ = r_offset; | |
1251 | } | |
1252 | ||
1253 | void | |
1254 | expect_tls_get_addr_call() | |
aacb3b6d | 1255 | { this->tls_get_addr_state_ = EXPECTED; } |
e3deeb9c AM |
1256 | |
1257 | void | |
1258 | skip_next_tls_get_addr_call() | |
aacb3b6d | 1259 | {this->tls_get_addr_state_ = SKIP; } |
e3deeb9c AM |
1260 | |
1261 | Tls_get_addr | |
34e0882b AM |
1262 | maybe_skip_tls_get_addr_call(Target_powerpc<size, big_endian>* target, |
1263 | unsigned int r_type, const Symbol* gsym) | |
e3deeb9c | 1264 | { |
32f59844 AM |
1265 | bool is_tls_call |
1266 | = ((r_type == elfcpp::R_POWERPC_REL24 | |
1267 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) | |
1268 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1269 | || is_plt16_reloc<size>(r_type) | |
e4dff765 AM |
1270 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 |
1271 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
32f59844 AM |
1272 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
1273 | || r_type == elfcpp::R_POWERPC_PLTCALL | |
1274 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC | |
1275 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) | |
1276 | && gsym != NULL | |
1277 | && (gsym == target->tls_get_addr() | |
1278 | || gsym == target->tls_get_addr_opt())); | |
aacb3b6d AM |
1279 | Tls_get_addr last_tls = this->tls_get_addr_state_; |
1280 | this->tls_get_addr_state_ = NOT_EXPECTED; | |
e3deeb9c AM |
1281 | if (is_tls_call && last_tls != EXPECTED) |
1282 | return last_tls; | |
1283 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
1284 | { | |
1285 | this->missing(); | |
1286 | return EXPECTED; | |
1287 | } | |
1288 | return NORMAL; | |
1289 | } | |
1290 | ||
1291 | private: | |
1292 | // What we're up to regarding calls to __tls_get_addr. | |
1293 | // On powerpc, the branch and link insn making a call to | |
1294 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
1295 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
32f59844 | 1296 | // usual R_POWERPC_REL24 or R_PPC_PLTREL24 relocation on a call. |
e3deeb9c AM |
1297 | // The marker relocation always comes first, and has the same |
1298 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
1299 | // argument. This ties the arg setup insn with the call insn, | |
1300 | // allowing ld to safely optimize away the call. We check that | |
1301 | // every call to __tls_get_addr has a marker relocation, and that | |
1302 | // every marker relocation is on a call to __tls_get_addr. | |
aacb3b6d | 1303 | Tls_get_addr tls_get_addr_state_; |
e3deeb9c AM |
1304 | // Info about the last reloc for error message. |
1305 | const Relocate_info<size, big_endian>* relinfo_; | |
1306 | size_t relnum_; | |
1307 | Address r_offset_; | |
1308 | }; | |
1309 | ||
42cacb20 | 1310 | // The class which scans relocations. |
e3deeb9c | 1311 | class Scan : protected Track_tls |
42cacb20 DE |
1312 | { |
1313 | public: | |
bfdfa4cd AM |
1314 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1315 | ||
42cacb20 | 1316 | Scan() |
e3deeb9c | 1317 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
1318 | { } |
1319 | ||
95a2c8d6 | 1320 | static inline int |
88b8e639 | 1321 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 1322 | |
42cacb20 | 1323 | inline void |
ad0f2072 | 1324 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1325 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1326 | unsigned int data_shndx, |
1327 | Output_section* output_section, | |
1328 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
1329 | const elfcpp::Sym<size, big_endian>& lsym, |
1330 | bool is_discarded); | |
42cacb20 DE |
1331 | |
1332 | inline void | |
ad0f2072 | 1333 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 1334 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1335 | unsigned int data_shndx, |
1336 | Output_section* output_section, | |
1337 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1338 | Symbol* gsym); | |
1339 | ||
21bb3914 ST |
1340 | inline bool |
1341 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1342 | Target_powerpc* , | |
f6971787 | 1343 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1344 | unsigned int , |
2e702c99 RM |
1345 | Output_section* , |
1346 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1347 | unsigned int r_type, |
2e702c99 | 1348 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1349 | { |
1350 | // PowerPC64 .opd is not folded, so any identical function text | |
1351 | // may be folded and we'll still keep function addresses distinct. | |
1352 | // That means no reloc is of concern here. | |
1353 | if (size == 64) | |
f6971787 AM |
1354 | { |
1355 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1356 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1357 | if (ppcobj->abiversion() == 1) | |
1358 | return false; | |
1359 | } | |
1360 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 | 1361 | // function code might be taking the address of the function. |
32f59844 | 1362 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1363 | } |
21bb3914 ST |
1364 | |
1365 | inline bool | |
1366 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1367 | Target_powerpc* , | |
f6971787 | 1368 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1369 | unsigned int , |
1370 | Output_section* , | |
4d9aa155 AM |
1371 | const elfcpp::Rela<size, big_endian>& , |
1372 | unsigned int r_type, | |
1373 | Symbol*) | |
1374 | { | |
1375 | // As above. | |
1376 | if (size == 64) | |
f6971787 AM |
1377 | { |
1378 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1379 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1380 | if (ppcobj->abiversion() == 1) | |
1381 | return false; | |
1382 | } | |
32f59844 | 1383 | return !is_branch_reloc<size>(r_type); |
4d9aa155 | 1384 | } |
21bb3914 | 1385 | |
b3ccdeb5 | 1386 | static bool |
9055360d AM |
1387 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1388 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1389 | unsigned int r_type, bool report_err); |
1390 | ||
42cacb20 DE |
1391 | private: |
1392 | static void | |
6fa2a40b | 1393 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1394 | unsigned int r_type); |
1395 | ||
1396 | static void | |
6fa2a40b | 1397 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1398 | unsigned int r_type, Symbol*); |
1399 | ||
1400 | static void | |
1401 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1402 | Target_powerpc* target); | |
1403 | ||
1404 | void | |
1405 | check_non_pic(Relobj*, unsigned int r_type); | |
1406 | ||
1407 | // Whether we have issued an error about a non-PIC compilation. | |
1408 | bool issued_non_pic_error_; | |
1409 | }; | |
1410 | ||
1611bc4a AM |
1411 | bool |
1412 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1413 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1414 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1415 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1416 | |
42cacb20 | 1417 | // The class which implements relocation. |
e3deeb9c | 1418 | class Relocate : protected Track_tls |
42cacb20 DE |
1419 | { |
1420 | public: | |
dd93cd0a AM |
1421 | // Use 'at' branch hints when true, 'y' when false. |
1422 | // FIXME maybe: set this with an option. | |
1423 | static const bool is_isa_v2 = true; | |
1424 | ||
dd93cd0a | 1425 | Relocate() |
e3deeb9c | 1426 | : Track_tls() |
dd93cd0a AM |
1427 | { } |
1428 | ||
42cacb20 DE |
1429 | // Do a relocation. Return false if the caller should not issue |
1430 | // any warnings about this relocation. | |
1431 | inline bool | |
91a65d2f AM |
1432 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1433 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1434 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1435 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1436 | section_size_type); |
42cacb20 DE |
1437 | }; |
1438 | ||
168a4726 AM |
1439 | class Relocate_comdat_behavior |
1440 | { | |
1441 | public: | |
1442 | // Decide what the linker should do for relocations that refer to | |
1443 | // discarded comdat sections. | |
1444 | inline Comdat_behavior | |
1445 | get(const char* name) | |
1446 | { | |
1447 | gold::Default_comdat_behavior default_behavior; | |
1448 | Comdat_behavior ret = default_behavior.get(name); | |
43193fe9 | 1449 | if (ret == CB_ERROR) |
168a4726 AM |
1450 | { |
1451 | if (size == 32 | |
1452 | && (strcmp(name, ".fixup") == 0 | |
1453 | || strcmp(name, ".got2") == 0)) | |
1454 | ret = CB_IGNORE; | |
1455 | if (size == 64 | |
1456 | && (strcmp(name, ".opd") == 0 | |
1457 | || strcmp(name, ".toc") == 0 | |
1458 | || strcmp(name, ".toc1") == 0)) | |
1459 | ret = CB_IGNORE; | |
1460 | } | |
1461 | return ret; | |
1462 | } | |
1463 | }; | |
1464 | ||
dd93cd0a AM |
1465 | // Optimize the TLS relocation type based on what we know about the |
1466 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1467 | // known at link time. | |
1468 | ||
1469 | tls::Tls_optimization | |
1470 | optimize_tls_gd(bool is_final) | |
1471 | { | |
1472 | // If we are generating a shared library, then we can't do anything | |
1473 | // in the linker. | |
aacb3b6d AM |
1474 | if (parameters->options().shared() |
1475 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1476 | return tls::TLSOPT_NONE; |
1477 | ||
1478 | if (!is_final) | |
1479 | return tls::TLSOPT_TO_IE; | |
1480 | return tls::TLSOPT_TO_LE; | |
1481 | } | |
1482 | ||
1483 | tls::Tls_optimization | |
1484 | optimize_tls_ld() | |
1485 | { | |
aacb3b6d AM |
1486 | if (parameters->options().shared() |
1487 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1488 | return tls::TLSOPT_NONE; |
1489 | ||
1490 | return tls::TLSOPT_TO_LE; | |
1491 | } | |
1492 | ||
1493 | tls::Tls_optimization | |
1494 | optimize_tls_ie(bool is_final) | |
1495 | { | |
aacb3b6d AM |
1496 | if (!is_final |
1497 | || parameters->options().shared() | |
1498 | || !parameters->options().tls_optimize()) | |
dd93cd0a AM |
1499 | return tls::TLSOPT_NONE; |
1500 | ||
1501 | return tls::TLSOPT_TO_LE; | |
1502 | } | |
cf43a2fe | 1503 | |
cf43a2fe AM |
1504 | // Create glink. |
1505 | void | |
1506 | make_glink_section(Layout*); | |
42cacb20 | 1507 | |
cf43a2fe AM |
1508 | // Create the PLT section. |
1509 | void | |
40b469d7 | 1510 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1511 | |
e5d5f5ed | 1512 | void |
40b469d7 | 1513 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1514 | |
2d7ad24e AM |
1515 | void |
1516 | make_lplt_section(Layout*); | |
1517 | ||
ec661b9d AM |
1518 | void |
1519 | make_brlt_section(Layout*); | |
1520 | ||
42cacb20 DE |
1521 | // Create a PLT entry for a global symbol. |
1522 | void | |
ec661b9d | 1523 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1524 | |
1525 | // Create a PLT entry for a local IFUNC symbol. | |
1526 | void | |
40b469d7 | 1527 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1528 | Sized_relobj_file<size, big_endian>*, |
1529 | unsigned int); | |
1530 | ||
2d7ad24e AM |
1531 | // Create a PLT entry for a local non-IFUNC symbol. |
1532 | void | |
1533 | make_local_plt_entry(Layout*, | |
1534 | Sized_relobj_file<size, big_endian>*, | |
1535 | unsigned int); | |
1536 | ||
42cacb20 | 1537 | |
dd93cd0a AM |
1538 | // Create a GOT entry for local dynamic __tls_get_addr. |
1539 | unsigned int | |
1540 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1541 | Sized_relobj_file<size, big_endian>* object); | |
1542 | ||
42cacb20 | 1543 | unsigned int |
dd93cd0a AM |
1544 | tlsld_got_offset() const |
1545 | { | |
1546 | return this->tlsld_got_offset_; | |
1547 | } | |
42cacb20 | 1548 | |
42cacb20 DE |
1549 | // Get the dynamic reloc section, creating it if necessary. |
1550 | Reloc_section* | |
1551 | rela_dyn_section(Layout*); | |
1552 | ||
b3ccdeb5 AM |
1553 | // Similarly, but for ifunc symbols get the one for ifunc. |
1554 | Reloc_section* | |
1555 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1556 | ||
42cacb20 DE |
1557 | // Copy a relocation against a global symbol. |
1558 | void | |
ef9beddf | 1559 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1560 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1561 | unsigned int shndx, Output_section* output_section, |
1562 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1563 | { | |
859d7987 | 1564 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1565 | this->copy_relocs_.copy_reloc(symtab, layout, |
1566 | symtab->get_sized_symbol<size>(sym), | |
1567 | object, shndx, output_section, | |
859d7987 CC |
1568 | r_type, reloc.get_r_offset(), |
1569 | reloc.get_r_addend(), | |
1570 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1571 | } |
1572 | ||
0cfdc767 | 1573 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1574 | void |
a3e60ddb | 1575 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1576 | |
1577 | // Sort output sections by address. | |
1578 | struct Sort_sections | |
1579 | { | |
1580 | bool | |
1581 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1582 | { return sec1->address() < sec2->address(); } | |
1583 | }; | |
1584 | ||
1585 | class Branch_info | |
1586 | { | |
1587 | public: | |
1588 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1589 | unsigned int data_shndx, | |
1590 | Address r_offset, | |
1591 | unsigned int r_type, | |
1592 | unsigned int r_sym, | |
1593 | Address addend) | |
1594 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
7e57d19e | 1595 | r_type_(r_type), tocsave_ (0), r_sym_(r_sym), addend_(addend) |
ec661b9d AM |
1596 | { } |
1597 | ||
1598 | ~Branch_info() | |
1599 | { } | |
1600 | ||
7e57d19e AM |
1601 | // Return whether this branch is going via a plt call stub, and if |
1602 | // so, mark it as having an R_PPC64_TOCSAVE. | |
1603 | bool | |
1604 | mark_pltcall(Powerpc_relobj<size, big_endian>* ppc_object, | |
1605 | unsigned int shndx, Address offset, | |
1606 | Target_powerpc* target, Symbol_table* symtab); | |
1607 | ||
ec661b9d | 1608 | // If this branch needs a plt call stub, or a long branch stub, make one. |
a3e60ddb | 1609 | bool |
ec661b9d AM |
1610 | make_stub(Stub_table<size, big_endian>*, |
1611 | Stub_table<size, big_endian>*, | |
1612 | Symbol_table*) const; | |
1613 | ||
1614 | private: | |
1615 | // The branch location.. | |
1616 | Powerpc_relobj<size, big_endian>* object_; | |
1617 | unsigned int shndx_; | |
1618 | Address offset_; | |
1619 | // ..and the branch type and destination. | |
7e57d19e AM |
1620 | unsigned int r_type_ : 31; |
1621 | unsigned int tocsave_ : 1; | |
ec661b9d AM |
1622 | unsigned int r_sym_; |
1623 | Address addend_; | |
1624 | }; | |
1625 | ||
42cacb20 DE |
1626 | // Information about this specific target which we pass to the |
1627 | // general Target structure. | |
1628 | static Target::Target_info powerpc_info; | |
1629 | ||
1630 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1631 | // These values are exposed to the ABI in an incremental link. |
1632 | // Do not renumber existing values without changing the version | |
1633 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1634 | enum Got_type |
1635 | { | |
dd93cd0a AM |
1636 | GOT_TYPE_STANDARD, |
1637 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1638 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1639 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1640 | }; |
1641 | ||
ec661b9d | 1642 | // The GOT section. |
cf43a2fe | 1643 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1644 | // The PLT section. This is a container for a table of addresses, |
1645 | // and their relocations. Each address in the PLT has a dynamic | |
1646 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1647 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1648 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1649 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1650 | // linker adds a stub that loads the PLT entry into ctr then | |
1651 | // branches to ctr. There may be more than one stub for each PLT | |
1652 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1653 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1654 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1655 | // The IPLT section. Like plt_, this is a container for a table of |
1656 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1657 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1658 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1659 | // entry in .glink for lazy resolution, and the relocation section | |
1660 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1661 | // the relocation section may contain relocations against | |
1662 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1663 | // relocation section will appear at the end of other dynamic | |
1664 | // relocations, so that ld.so applies these relocations after other | |
1665 | // dynamic relocations. In a static executable, the relocation | |
1666 | // section is emitted and marked with __rela_iplt_start and | |
1667 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1668 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
2d7ad24e AM |
1669 | // A PLT style section for local, non-ifunc symbols |
1670 | Output_data_plt_powerpc<size, big_endian>* lplt_; | |
ec661b9d AM |
1671 | // Section holding long branch destinations. |
1672 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1673 | // The .glink section. | |
cf43a2fe | 1674 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1675 | // The dynamic reloc section. |
42cacb20 DE |
1676 | Reloc_section* rela_dyn_; |
1677 | // Relocs saved to avoid a COPY reloc. | |
5edad15d | 1678 | Powerpc_copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; |
dd93cd0a AM |
1679 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1680 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1681 | |
1682 | Stub_tables stub_tables_; | |
1683 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1684 | Branch_lookup_table branch_lookup_table_; | |
1685 | ||
1686 | typedef std::vector<Branch_info> Branches; | |
1687 | Branches branch_info_; | |
7e57d19e | 1688 | Tocsave_loc tocsave_loc_; |
9e69ed50 | 1689 | |
e4dff765 | 1690 | bool powerxx_stubs_; |
9e69ed50 | 1691 | bool plt_thread_safe_; |
7ee7ff70 AM |
1692 | bool plt_localentry0_; |
1693 | bool plt_localentry0_init_; | |
1694 | bool has_localentry0_; | |
34e0882b | 1695 | bool has_tls_get_addr_opt_; |
a3e60ddb AM |
1696 | |
1697 | bool relax_failed_; | |
1698 | int relax_fail_count_; | |
1699 | int32_t stub_group_size_; | |
d49044c7 AM |
1700 | |
1701 | Output_data_save_res<size, big_endian> *savres_section_; | |
34e0882b AM |
1702 | |
1703 | // The "__tls_get_addr" symbol, if present | |
1704 | Symbol* tls_get_addr_; | |
1705 | // If optimizing __tls_get_addr calls, the "__tls_get_addr_opt" symbol. | |
1706 | Symbol* tls_get_addr_opt_; | |
724436fc AM |
1707 | |
1708 | // Attributes in output. | |
1709 | Attributes_section_data* attributes_section_data_; | |
1710 | ||
1711 | // Last input file to change various attribute tags | |
1712 | const char* last_fp_; | |
1713 | const char* last_ld_; | |
1714 | const char* last_vec_; | |
1715 | const char* last_struct_; | |
42cacb20 DE |
1716 | }; |
1717 | ||
1718 | template<> | |
1719 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1720 | { | |
1721 | 32, // size | |
1722 | true, // is_big_endian | |
1723 | elfcpp::EM_PPC, // machine_code | |
1724 | false, // has_make_symbol | |
1725 | false, // has_resolve | |
1726 | false, // has_code_fill | |
1727 | true, // is_default_stack_executable | |
b3ce541e | 1728 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1729 | '\0', // wrap_char |
1730 | "/usr/lib/ld.so.1", // dynamic_linker | |
1731 | 0x10000000, // default_text_segment_address | |
1732 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1733 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1734 | false, // isolate_execinstr |
1735 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1736 | elfcpp::SHN_UNDEF, // small_common_shndx |
1737 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1738 | 0, // small_common_section_flags | |
05a352e6 DK |
1739 | 0, // large_common_section_flags |
1740 | NULL, // attributes_section | |
a67858e0 | 1741 | NULL, // attributes_vendor |
8d9743bd MK |
1742 | "_start", // entry_symbol_name |
1743 | 32, // hash_entry_size | |
bce5a025 | 1744 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1745 | }; |
1746 | ||
1747 | template<> | |
1748 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1749 | { | |
1750 | 32, // size | |
1751 | false, // is_big_endian | |
1752 | elfcpp::EM_PPC, // machine_code | |
1753 | false, // has_make_symbol | |
1754 | false, // has_resolve | |
1755 | false, // has_code_fill | |
1756 | true, // is_default_stack_executable | |
b3ce541e | 1757 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1758 | '\0', // wrap_char |
1759 | "/usr/lib/ld.so.1", // dynamic_linker | |
1760 | 0x10000000, // default_text_segment_address | |
1761 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1762 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1763 | false, // isolate_execinstr |
1764 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1765 | elfcpp::SHN_UNDEF, // small_common_shndx |
1766 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1767 | 0, // small_common_section_flags | |
05a352e6 DK |
1768 | 0, // large_common_section_flags |
1769 | NULL, // attributes_section | |
a67858e0 | 1770 | NULL, // attributes_vendor |
8d9743bd MK |
1771 | "_start", // entry_symbol_name |
1772 | 32, // hash_entry_size | |
bce5a025 | 1773 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1774 | }; |
1775 | ||
1776 | template<> | |
1777 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1778 | { | |
1779 | 64, // size | |
1780 | true, // is_big_endian | |
1781 | elfcpp::EM_PPC64, // machine_code | |
1782 | false, // has_make_symbol | |
565ed01a | 1783 | true, // has_resolve |
42cacb20 | 1784 | false, // has_code_fill |
ec769010 | 1785 | false, // is_default_stack_executable |
b3ce541e | 1786 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1787 | '\0', // wrap_char |
1788 | "/usr/lib/ld.so.1", // dynamic_linker | |
1789 | 0x10000000, // default_text_segment_address | |
1790 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1791 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1792 | false, // isolate_execinstr |
1793 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1794 | elfcpp::SHN_UNDEF, // small_common_shndx |
1795 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1796 | 0, // small_common_section_flags | |
05a352e6 DK |
1797 | 0, // large_common_section_flags |
1798 | NULL, // attributes_section | |
a67858e0 | 1799 | NULL, // attributes_vendor |
8d9743bd MK |
1800 | "_start", // entry_symbol_name |
1801 | 32, // hash_entry_size | |
bce5a025 | 1802 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1803 | }; |
1804 | ||
1805 | template<> | |
1806 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1807 | { | |
1808 | 64, // size | |
1809 | false, // is_big_endian | |
1810 | elfcpp::EM_PPC64, // machine_code | |
1811 | false, // has_make_symbol | |
565ed01a | 1812 | true, // has_resolve |
42cacb20 | 1813 | false, // has_code_fill |
ec769010 | 1814 | false, // is_default_stack_executable |
b3ce541e | 1815 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1816 | '\0', // wrap_char |
1817 | "/usr/lib/ld.so.1", // dynamic_linker | |
1818 | 0x10000000, // default_text_segment_address | |
1819 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1820 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1821 | false, // isolate_execinstr |
1822 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1823 | elfcpp::SHN_UNDEF, // small_common_shndx |
1824 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1825 | 0, // small_common_section_flags | |
05a352e6 DK |
1826 | 0, // large_common_section_flags |
1827 | NULL, // attributes_section | |
a67858e0 | 1828 | NULL, // attributes_vendor |
8d9743bd MK |
1829 | "_start", // entry_symbol_name |
1830 | 32, // hash_entry_size | |
bce5a025 | 1831 | elfcpp::SHT_PROGBITS, // unwind_section_type |
42cacb20 DE |
1832 | }; |
1833 | ||
32f59844 | 1834 | template<int size> |
dd93cd0a AM |
1835 | inline bool |
1836 | is_branch_reloc(unsigned int r_type) | |
1837 | { | |
1838 | return (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 1839 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
dd93cd0a AM |
1840 | || r_type == elfcpp::R_PPC_PLTREL24 |
1841 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1842 | || r_type == elfcpp::R_POWERPC_REL14 | |
1843 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1844 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1845 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1846 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1847 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1848 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1849 | } | |
1850 | ||
08be3224 AM |
1851 | // Reloc resolves to plt entry. |
1852 | template<int size> | |
1853 | inline bool | |
1854 | is_plt16_reloc(unsigned int r_type) | |
1855 | { | |
1856 | return (r_type == elfcpp::R_POWERPC_PLT16_LO | |
1857 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
1858 | || r_type == elfcpp::R_POWERPC_PLT16_HA | |
1859 | || (size == 64 && r_type == elfcpp::R_PPC64_PLT16_LO_DS)); | |
1860 | } | |
1861 | ||
dd93cd0a AM |
1862 | // If INSN is an opcode that may be used with an @tls operand, return |
1863 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1864 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1865 | uint32_t | |
1866 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1867 | { | |
1868 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1869 | return 0; | |
1870 | ||
1871 | unsigned int rtra; | |
1872 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1873 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1874 | else if (((insn >> 16) & 0x1f) == reg) | |
1875 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1876 | else | |
1877 | return 0; | |
1878 | ||
1879 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1880 | // add -> addi | |
1881 | insn = 14 << 26; | |
1882 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1883 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1884 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1885 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1886 | // load and store indexed -> dform | |
1887 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1888 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1889 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1890 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1891 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1892 | // lwax -> lwa | |
1893 | insn = (58 << 26) | 2; | |
1894 | else | |
1895 | return 0; | |
1896 | insn |= rtra; | |
1897 | return insn; | |
1898 | } | |
1899 | ||
dd93cd0a | 1900 | |
42cacb20 DE |
1901 | template<int size, bool big_endian> |
1902 | class Powerpc_relocate_functions | |
1903 | { | |
dd93cd0a | 1904 | public: |
f4baf0d4 | 1905 | enum Overflow_check |
dd93cd0a | 1906 | { |
f4baf0d4 AM |
1907 | CHECK_NONE, |
1908 | CHECK_SIGNED, | |
b80eed39 AM |
1909 | CHECK_UNSIGNED, |
1910 | CHECK_BITFIELD, | |
1911 | CHECK_LOW_INSN, | |
1912 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1913 | }; |
1914 | ||
f4baf0d4 | 1915 | enum Status |
dd93cd0a | 1916 | { |
f4baf0d4 AM |
1917 | STATUS_OK, |
1918 | STATUS_OVERFLOW | |
1919 | }; | |
dd93cd0a | 1920 | |
42cacb20 | 1921 | private: |
c9269dff | 1922 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1923 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1924 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1925 | |
dd93cd0a AM |
1926 | template<int valsize> |
1927 | static inline bool | |
1928 | has_overflow_signed(Address value) | |
1929 | { | |
1930 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1931 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1932 | limit <<= ((valsize - 1) >> 1); | |
1933 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1934 | return value + limit > (limit << 1) - 1; | |
1935 | } | |
1936 | ||
1937 | template<int valsize> | |
1938 | static inline bool | |
b80eed39 | 1939 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1940 | { |
1941 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1942 | limit <<= ((valsize - 1) >> 1); | |
1943 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1944 | return value > (limit << 1) - 1; |
1945 | } | |
1946 | ||
1947 | template<int valsize> | |
1948 | static inline bool | |
1949 | has_overflow_bitfield(Address value) | |
1950 | { | |
1951 | return (has_overflow_unsigned<valsize>(value) | |
1952 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1953 | } |
1954 | ||
1955 | template<int valsize> | |
f4baf0d4 AM |
1956 | static inline Status |
1957 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1958 | { |
f4baf0d4 | 1959 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1960 | { |
1961 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1962 | return STATUS_OVERFLOW; |
dd93cd0a | 1963 | } |
b80eed39 AM |
1964 | else if (overflow == CHECK_UNSIGNED) |
1965 | { | |
1966 | if (has_overflow_unsigned<valsize>(value)) | |
1967 | return STATUS_OVERFLOW; | |
1968 | } | |
f4baf0d4 | 1969 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1970 | { |
1971 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1972 | return STATUS_OVERFLOW; |
dd93cd0a | 1973 | } |
f4baf0d4 | 1974 | return STATUS_OK; |
dd93cd0a AM |
1975 | } |
1976 | ||
cf43a2fe | 1977 | // Do a simple RELA relocation |
0cfb0717 | 1978 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1979 | static inline Status |
1980 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1981 | { |
0cfb0717 | 1982 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1983 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1984 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1985 | return overflowed<valsize>(value, overflow); |
1986 | } | |
1987 | ||
0cfb0717 | 1988 | template<int fieldsize, int valsize> |
f4baf0d4 | 1989 | static inline Status |
42cacb20 DE |
1990 | rela(unsigned char* view, |
1991 | unsigned int right_shift, | |
0cfb0717 | 1992 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1993 | Address value, |
f4baf0d4 | 1994 | Overflow_check overflow) |
42cacb20 | 1995 | { |
0cfb0717 | 1996 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1997 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1998 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1999 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
2000 | val &= ~dst_mask; |
2001 | reloc &= dst_mask; | |
0cfb0717 | 2002 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 2003 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
2004 | } |
2005 | ||
cf43a2fe | 2006 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 2007 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
2008 | static inline Status |
2009 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2010 | { |
0cfb0717 | 2011 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
2012 | return overflowed<valsize>(value, overflow); |
2013 | } | |
2014 | ||
0cfb0717 | 2015 | template<int fieldsize, int valsize> |
f4baf0d4 | 2016 | static inline Status |
cf43a2fe AM |
2017 | rela_ua(unsigned char* view, |
2018 | unsigned int right_shift, | |
0cfb0717 | 2019 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 2020 | Address value, |
f4baf0d4 | 2021 | Overflow_check overflow) |
42cacb20 | 2022 | { |
0cfb0717 | 2023 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 2024 | Valtype; |
0cfb0717 | 2025 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 2026 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
2027 | val &= ~dst_mask; |
2028 | reloc &= dst_mask; | |
0cfb0717 | 2029 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 2030 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
2031 | } |
2032 | ||
42cacb20 | 2033 | public: |
dd93cd0a | 2034 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 2035 | static inline void |
dd93cd0a | 2036 | addr64(unsigned char* view, Address value) |
0cfb0717 | 2037 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 2038 | |
dd93cd0a | 2039 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 2040 | static inline void |
dd93cd0a | 2041 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 2042 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
2043 | |
2044 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
2045 | static inline Status |
2046 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2047 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
2048 | |
2049 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
2050 | static inline Status |
2051 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2052 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
2053 | |
2054 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
2055 | static inline Status |
2056 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2057 | { |
0cfb0717 AM |
2058 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
2059 | value, overflow); | |
f4baf0d4 AM |
2060 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2061 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2062 | return stat; |
2063 | } | |
42cacb20 DE |
2064 | |
2065 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
2066 | static inline Status |
2067 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2068 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 2069 | |
dd93cd0a | 2070 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
2071 | static inline Status |
2072 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 2073 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 2074 | |
dd93cd0a | 2075 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
2076 | static inline Status |
2077 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2078 | { |
0cfb0717 | 2079 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 2080 | if ((value & 3) != 0) |
f4baf0d4 | 2081 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
2082 | return stat; |
2083 | } | |
42cacb20 | 2084 | |
a680de9a PB |
2085 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
2086 | static inline Status | |
2087 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
2088 | { | |
2089 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
2090 | if ((value & 15) != 0) | |
2091 | stat = STATUS_OVERFLOW; | |
2092 | return stat; | |
2093 | } | |
2094 | ||
42cacb20 DE |
2095 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
2096 | static inline void | |
dd93cd0a | 2097 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 2098 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2099 | |
c9269dff | 2100 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 2101 | static inline void |
dd93cd0a AM |
2102 | addr16_ha(unsigned char* view, Address value) |
2103 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 2104 | |
dd93cd0a | 2105 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 2106 | static inline void |
dd93cd0a | 2107 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 2108 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2109 | |
dd93cd0a | 2110 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 2111 | static inline void |
dd93cd0a AM |
2112 | addr16_ha2(unsigned char* view, Address value) |
2113 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 2114 | |
dd93cd0a | 2115 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 2116 | static inline void |
dd93cd0a | 2117 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 2118 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 2119 | |
dd93cd0a | 2120 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 2121 | static inline void |
dd93cd0a AM |
2122 | addr16_ha3(unsigned char* view, Address value) |
2123 | { This::addr16_hi3(view, value + 0x8000); } | |
2124 | ||
2125 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
2126 | static inline Status |
2127 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 2128 | { |
0cfb0717 | 2129 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
2130 | if (overflow != CHECK_NONE && (value & 3) != 0) |
2131 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
2132 | return stat; |
2133 | } | |
a680de9a PB |
2134 | |
2135 | // R_POWERPC_REL16DX_HA | |
2136 | static inline Status | |
2137 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
2138 | { | |
2139 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
2140 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
2141 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
2142 | value += 0x8000; | |
2143 | value = static_cast<SignedAddress>(value) >> 16; | |
2144 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
2145 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
2146 | return overflowed<16>(value, overflow); | |
2147 | } | |
e4dff765 AM |
2148 | |
2149 | // R_PPC64_D34 | |
2150 | static inline Status | |
2151 | addr34(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2152 | { | |
2153 | Status stat = This::template rela<32,18>(view, 16, 0x3ffff, | |
2154 | value, overflow); | |
2155 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2156 | return stat; | |
2157 | } | |
2158 | ||
2159 | // R_PPC64_D34_HI30 | |
2160 | static inline void | |
2161 | addr34_hi(unsigned char *view, uint64_t value) | |
2162 | { This::addr34(view, value >> 34, CHECK_NONE);} | |
2163 | ||
2164 | // R_PPC64_D34_HA30 | |
2165 | static inline void | |
2166 | addr34_ha(unsigned char *view, uint64_t value) | |
2167 | { This::addr34_hi(view, value + (1ULL << 33));} | |
2168 | ||
2169 | // R_PPC64_D28 | |
2170 | static inline Status | |
2171 | addr28(unsigned char *view, uint64_t value, Overflow_check overflow) | |
2172 | { | |
2173 | Status stat = This::template rela<32,12>(view, 16, 0xfff, | |
2174 | value, overflow); | |
2175 | This::rela<32,16>(view + 4, 0, 0xffff, value, CHECK_NONE); | |
2176 | return stat; | |
2177 | } | |
2178 | ||
2179 | // R_PPC64_ADDR16_HIGHER34 | |
2180 | static inline void | |
2181 | addr16_higher34(unsigned char* view, uint64_t value) | |
2182 | { This::addr16(view, value >> 34, CHECK_NONE); } | |
2183 | ||
2184 | // R_PPC64_ADDR16_HIGHERA34 | |
2185 | static inline void | |
2186 | addr16_highera34(unsigned char* view, uint64_t value) | |
2187 | { This::addr16_higher34(view, value + (1ULL << 33)); } | |
2188 | ||
2189 | // R_PPC64_ADDR16_HIGHEST34 | |
2190 | static inline void | |
2191 | addr16_highest34(unsigned char* view, uint64_t value) | |
2192 | { This::addr16(view, value >> 50, CHECK_NONE); } | |
2193 | ||
2194 | // R_PPC64_ADDR16_HIGHESTA34 | |
2195 | static inline void | |
2196 | addr16_highesta34(unsigned char* view, uint64_t value) | |
2197 | { This::addr16_highest34(view, value + (1ULL << 33)); } | |
cf43a2fe AM |
2198 | }; |
2199 | ||
b4f7960d AM |
2200 | // Set ABI version for input and output. |
2201 | ||
2202 | template<int size, bool big_endian> | |
2203 | void | |
2204 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
2205 | { | |
2206 | this->e_flags_ |= ver; | |
2207 | if (this->abiversion() != 0) | |
2208 | { | |
2209 | Target_powerpc<size, big_endian>* target = | |
2210 | static_cast<Target_powerpc<size, big_endian>*>( | |
2211 | parameters->sized_target<size, big_endian>()); | |
2212 | if (target->abiversion() == 0) | |
2213 | target->set_abiversion(this->abiversion()); | |
2214 | else if (target->abiversion() != this->abiversion()) | |
2215 | gold_error(_("%s: ABI version %d is not compatible " | |
2216 | "with ABI version %d output"), | |
2217 | this->name().c_str(), | |
2218 | this->abiversion(), target->abiversion()); | |
2219 | ||
2220 | } | |
2221 | } | |
2222 | ||
5edad15d AM |
2223 | // Stash away the index of .got2, .opd, .rela.toc, and .toc in a |
2224 | // relocatable object, if such sections exists. | |
cf43a2fe AM |
2225 | |
2226 | template<int size, bool big_endian> | |
2227 | bool | |
2228 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
2229 | Read_symbols_data* sd) | |
2230 | { | |
c9269dff AM |
2231 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2232 | const unsigned char* namesu = sd->section_names->data(); | |
2233 | const char* names = reinterpret_cast<const char*>(namesu); | |
2234 | section_size_type names_size = sd->section_names_size; | |
2235 | const unsigned char* s; | |
2236 | ||
dc3714f3 AM |
2237 | s = this->template find_shdr<size, big_endian>(pshdrs, |
2238 | size == 32 ? ".got2" : ".opd", | |
2239 | names, names_size, NULL); | |
c9269dff AM |
2240 | if (s != NULL) |
2241 | { | |
2242 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2243 | this->special_ = ndx; | |
b4f7960d AM |
2244 | if (size == 64) |
2245 | { | |
2246 | if (this->abiversion() == 0) | |
2247 | this->set_abiversion(1); | |
2248 | else if (this->abiversion() > 1) | |
2249 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2250 | this->name().c_str(), this->abiversion()); | |
2251 | } | |
c9269dff | 2252 | } |
5edad15d AM |
2253 | if (size == 64) |
2254 | { | |
2255 | s = this->template find_shdr<size, big_endian>(pshdrs, ".rela.toc", | |
2256 | names, names_size, NULL); | |
2257 | if (s != NULL) | |
2258 | { | |
2259 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
2260 | this->relatoc_ = ndx; | |
2261 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2262 | this->toc_ = this->adjust_shndx(shdr.get_sh_info()); | |
2263 | } | |
2264 | } | |
c9269dff AM |
2265 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); |
2266 | } | |
2267 | ||
2268 | // Examine .rela.opd to build info about function entry points. | |
2269 | ||
2270 | template<int size, bool big_endian> | |
2271 | void | |
2272 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
2273 | size_t reloc_count, | |
2274 | const unsigned char* prelocs, | |
2275 | const unsigned char* plocal_syms) | |
2276 | { | |
2277 | if (size == 64) | |
cf43a2fe | 2278 | { |
0e123f69 AM |
2279 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
2280 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 2281 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
2282 | Address expected_off = 0; |
2283 | bool regular = true; | |
2284 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
2285 | |
2286 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 2287 | { |
c9269dff AM |
2288 | Reltype reloc(prelocs); |
2289 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
2290 | = reloc.get_r_info(); | |
2291 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
2292 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
2293 | { | |
2294 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
2295 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
2296 | bool is_ordinary; | |
2297 | unsigned int shndx; | |
2298 | if (r_sym < this->local_symbol_count()) | |
2299 | { | |
2300 | typename elfcpp::Sym<size, big_endian> | |
2301 | lsym(plocal_syms + r_sym * sym_size); | |
2302 | shndx = lsym.get_st_shndx(); | |
2303 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2304 | value = lsym.get_st_value(); | |
2305 | } | |
2306 | else | |
2307 | shndx = this->symbol_section_and_value(r_sym, &value, | |
2308 | &is_ordinary); | |
2309 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
2310 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
2311 | if (i == 2) |
2312 | { | |
2313 | expected_off = reloc.get_r_offset(); | |
2314 | opd_ent_size = expected_off; | |
2315 | } | |
2316 | else if (expected_off != reloc.get_r_offset()) | |
2317 | regular = false; | |
2318 | expected_off += opd_ent_size; | |
2319 | } | |
2320 | else if (r_type == elfcpp::R_PPC64_TOC) | |
2321 | { | |
2322 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
2323 | regular = false; | |
2324 | } | |
2325 | else | |
2326 | { | |
2327 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
2328 | this->name().c_str(), r_type); | |
2329 | regular = false; | |
c9269dff AM |
2330 | } |
2331 | } | |
ec4dbad3 AM |
2332 | if (reloc_count <= 2) |
2333 | opd_ent_size = this->section_size(this->opd_shndx()); | |
2334 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
2335 | regular = false; | |
2336 | if (!regular) | |
2337 | { | |
2338 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
2339 | this->name().c_str()); | |
2340 | opd_ent_size = 0; | |
2341 | } | |
c9269dff AM |
2342 | } |
2343 | } | |
2344 | ||
5edad15d AM |
2345 | // Returns true if a code sequence loading the TOC entry at VALUE |
2346 | // relative to the TOC pointer can be converted into code calculating | |
2347 | // a TOC pointer relative offset. | |
2348 | // If so, the TOC pointer relative offset is stored to VALUE. | |
2349 | ||
2350 | template<int size, bool big_endian> | |
2351 | bool | |
2352 | Powerpc_relobj<size, big_endian>::make_toc_relative( | |
2353 | Target_powerpc<size, big_endian>* target, | |
2354 | Address* value) | |
2355 | { | |
2356 | if (size != 64) | |
2357 | return false; | |
2358 | ||
e666304e AM |
2359 | // With -mcmodel=medium code it is quite possible to have |
2360 | // toc-relative relocs referring to objects outside the TOC. | |
2361 | // Don't try to look at a non-existent TOC. | |
2362 | if (this->toc_shndx() == 0) | |
2363 | return false; | |
2364 | ||
5edad15d AM |
2365 | // Convert VALUE back to an address by adding got_base (see below), |
2366 | // then to an offset in the TOC by subtracting the TOC output | |
2367 | // section address and the TOC output offset. Since this TOC output | |
2368 | // section and the got output section are one and the same, we can | |
2369 | // omit adding and subtracting the output section address. | |
2370 | Address off = (*value + this->toc_base_offset() | |
2371 | - this->output_section_offset(this->toc_shndx())); | |
2372 | // Is this offset in the TOC? -mcmodel=medium code may be using | |
2373 | // TOC relative access to variables outside the TOC. Those of | |
2374 | // course can't be optimized. We also don't try to optimize code | |
2375 | // that is using a different object's TOC. | |
2376 | if (off >= this->section_size(this->toc_shndx())) | |
2377 | return false; | |
2378 | ||
2379 | if (this->no_toc_opt(off)) | |
2380 | return false; | |
2381 | ||
2382 | section_size_type vlen; | |
2383 | unsigned char* view = this->get_output_view(this->toc_shndx(), &vlen); | |
2384 | Address addr = elfcpp::Swap<size, big_endian>::readval(view + off); | |
2385 | // The TOC pointer | |
2386 | Address got_base = (target->got_section()->output_section()->address() | |
2387 | + this->toc_base_offset()); | |
2388 | addr -= got_base; | |
857e829e | 2389 | if (addr + (uint64_t) 0x80008000 >= (uint64_t) 1 << 32) |
5edad15d AM |
2390 | return false; |
2391 | ||
2392 | *value = addr; | |
2393 | return true; | |
2394 | } | |
2395 | ||
c9b8abb7 AM |
2396 | template<int size, bool big_endian> |
2397 | bool | |
2398 | Powerpc_relobj<size, big_endian>::make_got_relative( | |
2399 | Target_powerpc<size, big_endian>* target, | |
2400 | const Symbol_value<size>* psymval, | |
2401 | Address addend, | |
2402 | Address* value) | |
2403 | { | |
2404 | Address addr = psymval->value(this, addend); | |
2405 | Address got_base = (target->got_section()->output_section()->address() | |
2406 | + this->toc_base_offset()); | |
2407 | addr -= got_base; | |
2408 | if (addr + 0x80008000 > 0xffffffff) | |
2409 | return false; | |
2410 | ||
2411 | *value = addr; | |
2412 | return true; | |
2413 | } | |
2414 | ||
5edad15d AM |
2415 | // Perform the Sized_relobj_file method, then set up opd info from |
2416 | // .opd relocs. | |
2417 | ||
c9269dff AM |
2418 | template<int size, bool big_endian> |
2419 | void | |
2420 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
2421 | { | |
2422 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
2423 | if (size == 64) | |
2424 | { | |
2425 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
2426 | p != rd->relocs.end(); | |
2427 | ++p) | |
2428 | { | |
2429 | if (p->data_shndx == this->opd_shndx()) | |
2430 | { | |
ec4dbad3 AM |
2431 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
2432 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
2433 | if (opd_size != 0) | |
2434 | { | |
2435 | this->init_opd(opd_size); | |
2436 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
2437 | rd->local_symbols->data()); | |
2438 | } | |
c9269dff AM |
2439 | break; |
2440 | } | |
cf43a2fe AM |
2441 | } |
2442 | } | |
cf43a2fe AM |
2443 | } |
2444 | ||
b4f7960d AM |
2445 | // Read the symbols then set up st_other vector. |
2446 | ||
2447 | template<int size, bool big_endian> | |
2448 | void | |
2449 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2450 | { | |
f35c4853 | 2451 | this->base_read_symbols(sd); |
724436fc AM |
2452 | if (this->input_file()->format() != Input_file::FORMAT_ELF) |
2453 | return; | |
b4f7960d AM |
2454 | if (size == 64) |
2455 | { | |
2456 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2457 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
2458 | const unsigned int loccount = this->do_local_symbol_count(); | |
2459 | if (loccount != 0) | |
2460 | { | |
2461 | this->st_other_.resize(loccount); | |
2462 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
2463 | off_t locsize = loccount * sym_size; | |
2464 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
2465 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
2466 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
2467 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
2468 | locsize, true, false); | |
2469 | psyms += sym_size; | |
2470 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
2471 | { | |
2472 | elfcpp::Sym<size, big_endian> sym(psyms); | |
2473 | unsigned char st_other = sym.get_st_other(); | |
2474 | this->st_other_[i] = st_other; | |
2475 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
2476 | { | |
2477 | if (this->abiversion() == 0) | |
2478 | this->set_abiversion(2); | |
2479 | else if (this->abiversion() < 2) | |
2480 | gold_error(_("%s: local symbol %d has invalid st_other" | |
2481 | " for ABI version 1"), | |
2482 | this->name().c_str(), i); | |
2483 | } | |
2484 | } | |
2485 | } | |
2486 | } | |
724436fc AM |
2487 | |
2488 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
2489 | const unsigned char* ps = sd->section_headers->data() + shdr_size; | |
2490 | bool merge_attributes = false; | |
2491 | for (unsigned int i = 1; i < this->shnum(); ++i, ps += shdr_size) | |
2492 | { | |
2493 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2494 | switch (shdr.get_sh_type()) | |
2495 | { | |
2496 | case elfcpp::SHT_GNU_ATTRIBUTES: | |
2497 | { | |
2498 | gold_assert(this->attributes_section_data_ == NULL); | |
2499 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2500 | section_size_type section_size = | |
2501 | convert_to_section_size_type(shdr.get_sh_size()); | |
2502 | const unsigned char* view = | |
2503 | this->get_view(section_offset, section_size, true, false); | |
2504 | this->attributes_section_data_ = | |
2505 | new Attributes_section_data(view, section_size); | |
2506 | } | |
2507 | break; | |
2508 | ||
2509 | case elfcpp::SHT_SYMTAB: | |
2510 | { | |
2511 | // Sometimes an object has no contents except the section | |
2512 | // name string table and an empty symbol table with the | |
2513 | // undefined symbol. We don't want to merge | |
2514 | // processor-specific flags from such an object. | |
2515 | const typename elfcpp::Elf_types<size>::Elf_WXword sym_size = | |
2516 | elfcpp::Elf_sizes<size>::sym_size; | |
2517 | if (shdr.get_sh_size() > sym_size) | |
2518 | merge_attributes = true; | |
2519 | } | |
2520 | break; | |
2521 | ||
2522 | case elfcpp::SHT_STRTAB: | |
2523 | break; | |
2524 | ||
2525 | default: | |
2526 | merge_attributes = true; | |
2527 | break; | |
2528 | } | |
2529 | } | |
2530 | ||
2531 | if (!merge_attributes) | |
2532 | { | |
2533 | // Should rarely happen. | |
2534 | delete this->attributes_section_data_; | |
2535 | this->attributes_section_data_ = NULL; | |
2536 | } | |
b4f7960d AM |
2537 | } |
2538 | ||
2539 | template<int size, bool big_endian> | |
2540 | void | |
2541 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
2542 | { | |
2543 | this->e_flags_ |= ver; | |
2544 | if (this->abiversion() != 0) | |
2545 | { | |
2546 | Target_powerpc<size, big_endian>* target = | |
2547 | static_cast<Target_powerpc<size, big_endian>*>( | |
2548 | parameters->sized_target<size, big_endian>()); | |
2549 | if (target->abiversion() == 0) | |
2550 | target->set_abiversion(this->abiversion()); | |
2551 | else if (target->abiversion() != this->abiversion()) | |
2552 | gold_error(_("%s: ABI version %d is not compatible " | |
2553 | "with ABI version %d output"), | |
2554 | this->name().c_str(), | |
2555 | this->abiversion(), target->abiversion()); | |
2556 | ||
2557 | } | |
2558 | } | |
2559 | ||
f35c4853 | 2560 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
2561 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
2562 | ||
2563 | template<int size, bool big_endian> | |
2564 | void | |
2565 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
2566 | { | |
f35c4853 | 2567 | this->base_read_symbols(sd); |
724436fc AM |
2568 | const size_t shdr_size = elfcpp::Elf_sizes<size>::shdr_size; |
2569 | const unsigned char* ps = | |
2570 | sd->section_headers->data() + shdr_size * (this->shnum() - 1); | |
2571 | for (unsigned int i = this->shnum(); i > 0; --i, ps -= shdr_size) | |
2572 | { | |
2573 | elfcpp::Shdr<size, big_endian> shdr(ps); | |
2574 | if (shdr.get_sh_type() == elfcpp::SHT_GNU_ATTRIBUTES) | |
2575 | { | |
2576 | section_offset_type section_offset = shdr.get_sh_offset(); | |
2577 | section_size_type section_size = | |
2578 | convert_to_section_size_type(shdr.get_sh_size()); | |
2579 | const unsigned char* view = | |
2580 | this->get_view(section_offset, section_size, true, false); | |
2581 | this->attributes_section_data_ = | |
2582 | new Attributes_section_data(view, section_size); | |
2583 | break; | |
2584 | } | |
2585 | } | |
dc3714f3 AM |
2586 | if (size == 64) |
2587 | { | |
dc3714f3 AM |
2588 | const unsigned char* const pshdrs = sd->section_headers->data(); |
2589 | const unsigned char* namesu = sd->section_names->data(); | |
2590 | const char* names = reinterpret_cast<const char*>(namesu); | |
2591 | const unsigned char* s = NULL; | |
2592 | const unsigned char* opd; | |
2593 | section_size_type opd_size; | |
2594 | ||
2595 | // Find and read .opd section. | |
2596 | while (1) | |
2597 | { | |
2598 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
2599 | sd->section_names_size, | |
2600 | s); | |
2601 | if (s == NULL) | |
2602 | return; | |
2603 | ||
2604 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2605 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2606 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2607 | { | |
b4f7960d AM |
2608 | if (this->abiversion() == 0) |
2609 | this->set_abiversion(1); | |
2610 | else if (this->abiversion() > 1) | |
2611 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2612 | this->name().c_str(), this->abiversion()); | |
2613 | ||
dc3714f3 AM |
2614 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2615 | this->opd_address_ = shdr.get_sh_addr(); | |
2616 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2617 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2618 | true, false); | |
2619 | break; | |
2620 | } | |
2621 | } | |
2622 | ||
2623 | // Build set of executable sections. | |
2624 | // Using a set is probably overkill. There is likely to be only | |
2625 | // a few executable sections, typically .init, .text and .fini, | |
2626 | // and they are generally grouped together. | |
2627 | typedef std::set<Sec_info> Exec_sections; | |
2628 | Exec_sections exec_sections; | |
2629 | s = pshdrs; | |
2630 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2631 | { | |
2632 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2633 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2634 | && ((shdr.get_sh_flags() | |
2635 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2636 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2637 | && shdr.get_sh_size() != 0) | |
2638 | { | |
2639 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2640 | shdr.get_sh_size(), i)); | |
2641 | } | |
2642 | } | |
2643 | if (exec_sections.empty()) | |
2644 | return; | |
2645 | ||
2646 | // Look over the OPD entries. This is complicated by the fact | |
2647 | // that some binaries will use two-word entries while others | |
2648 | // will use the standard three-word entries. In most cases | |
2649 | // the third word (the environment pointer for languages like | |
2650 | // Pascal) is unused and will be zero. If the third word is | |
2651 | // used it should not be pointing into executable sections, | |
2652 | // I think. | |
2653 | this->init_opd(opd_size); | |
2654 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2655 | { | |
2656 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2657 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2658 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2659 | if (val == 0) | |
2660 | // Chances are that this is the third word of an OPD entry. | |
2661 | continue; | |
2662 | typename Exec_sections::const_iterator e | |
2663 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2664 | if (e != exec_sections.begin()) | |
2665 | { | |
2666 | --e; | |
2667 | if (e->start <= val && val < e->start + e->len) | |
2668 | { | |
2669 | // We have an address in an executable section. | |
2670 | // VAL ought to be the function entry, set it up. | |
2671 | this->set_opd_ent(p - opd, e->shndx, val); | |
2672 | // Skip second word of OPD entry, the TOC pointer. | |
2673 | p += 8; | |
2674 | } | |
2675 | } | |
2676 | // If we didn't match any executable sections, we likely | |
2677 | // have a non-zero third word in the OPD entry. | |
2678 | } | |
2679 | } | |
2680 | } | |
2681 | ||
5edad15d AM |
2682 | // Relocate sections. |
2683 | ||
2684 | template<int size, bool big_endian> | |
2685 | void | |
2686 | Powerpc_relobj<size, big_endian>::do_relocate_sections( | |
2687 | const Symbol_table* symtab, const Layout* layout, | |
2688 | const unsigned char* pshdrs, Output_file* of, | |
2689 | typename Sized_relobj_file<size, big_endian>::Views* pviews) | |
2690 | { | |
2691 | unsigned int start = 1; | |
2692 | if (size == 64 | |
2693 | && this->relatoc_ != 0 | |
2694 | && !parameters->options().relocatable()) | |
2695 | { | |
2696 | // Relocate .toc first. | |
2697 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2698 | this->relatoc_, this->relatoc_); | |
2699 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2700 | 1, this->relatoc_ - 1); | |
2701 | start = this->relatoc_ + 1; | |
2702 | } | |
2703 | this->relocate_section_range(symtab, layout, pshdrs, of, pviews, | |
2704 | start, this->shnum() - 1); | |
2d7ad24e AM |
2705 | |
2706 | if (!parameters->options().output_is_position_independent()) | |
2707 | { | |
2708 | Target_powerpc<size, big_endian>* target | |
2709 | = static_cast<Target_powerpc<size, big_endian>*>( | |
2710 | parameters->sized_target<size, big_endian>()); | |
2711 | if (target->lplt_section() && target->lplt_section()->data_size() != 0) | |
2712 | { | |
2713 | const section_size_type offset = target->lplt_section()->offset(); | |
2714 | const section_size_type oview_size | |
2715 | = convert_to_section_size_type(target->lplt_section()->data_size()); | |
2716 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
2717 | ||
2718 | bool modified = false; | |
2719 | unsigned int nsyms = this->local_symbol_count(); | |
2720 | for (unsigned int i = 0; i < nsyms; i++) | |
2721 | if (this->local_has_plt_offset(i)) | |
2722 | { | |
2723 | Address value = this->local_symbol_value(i, 0); | |
2724 | if (size == 64) | |
2725 | value += ppc64_local_entry_offset(i); | |
2726 | size_t off = this->local_plt_offset(i); | |
2727 | elfcpp::Swap<size, big_endian>::writeval(oview + off, value); | |
2728 | modified = true; | |
2729 | } | |
2730 | if (modified) | |
2731 | of->write_output_view(offset, oview_size, oview); | |
2732 | } | |
2733 | } | |
5edad15d AM |
2734 | } |
2735 | ||
f43ba157 | 2736 | // Set up some symbols. |
26a4e9cb AM |
2737 | |
2738 | template<int size, bool big_endian> | |
2739 | void | |
f43ba157 AM |
2740 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2741 | Symbol_table* symtab, | |
2742 | Layout* layout) | |
26a4e9cb AM |
2743 | { |
2744 | if (size == 32) | |
2745 | { | |
bb66a627 AM |
2746 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2747 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2748 | // non-relative dynamic relocs). The proper value will be |
2749 | // updated later. | |
2750 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2751 | if (gotsym != NULL && gotsym->is_undefined()) | |
2752 | { | |
2753 | Target_powerpc<size, big_endian>* target = | |
2754 | static_cast<Target_powerpc<size, big_endian>*>( | |
2755 | parameters->sized_target<size, big_endian>()); | |
2756 | Output_data_got_powerpc<size, big_endian>* got | |
2757 | = target->got_section(symtab, layout); | |
2758 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2759 | Symbol_table::PREDEFINED, | |
2760 | got, 0, 0, | |
2761 | elfcpp::STT_OBJECT, | |
bb66a627 | 2762 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2763 | elfcpp::STV_HIDDEN, 0, |
2764 | false, false); | |
2765 | } | |
2766 | ||
2767 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2768 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2769 | if (sdasym != NULL && sdasym->is_undefined()) | |
2770 | { | |
2771 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2772 | Output_section* os | |
2773 | = layout->add_output_section_data(".sdata", 0, | |
2774 | elfcpp::SHF_ALLOC | |
2775 | | elfcpp::SHF_WRITE, | |
2776 | sdata, ORDER_SMALL_DATA, false); | |
2777 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2778 | Symbol_table::PREDEFINED, | |
2779 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2780 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2781 | 0, false, false); | |
2782 | } | |
2783 | } | |
b4f7960d AM |
2784 | else |
2785 | { | |
2786 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2787 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2788 | if (gotsym != NULL && gotsym->is_undefined()) | |
2789 | { | |
2790 | Target_powerpc<size, big_endian>* target = | |
2791 | static_cast<Target_powerpc<size, big_endian>*>( | |
2792 | parameters->sized_target<size, big_endian>()); | |
2793 | Output_data_got_powerpc<size, big_endian>* got | |
2794 | = target->got_section(symtab, layout); | |
2795 | symtab->define_in_output_data(".TOC.", NULL, | |
2796 | Symbol_table::PREDEFINED, | |
2797 | got, 0x8000, 0, | |
2798 | elfcpp::STT_OBJECT, | |
2799 | elfcpp::STB_LOCAL, | |
2800 | elfcpp::STV_HIDDEN, 0, | |
2801 | false, false); | |
2802 | } | |
2803 | } | |
34e0882b AM |
2804 | |
2805 | this->tls_get_addr_ = symtab->lookup("__tls_get_addr"); | |
2806 | if (parameters->options().tls_get_addr_optimize() | |
2807 | && this->tls_get_addr_ != NULL | |
2808 | && this->tls_get_addr_->in_reg()) | |
2809 | this->tls_get_addr_opt_ = symtab->lookup("__tls_get_addr_opt"); | |
2810 | if (this->tls_get_addr_opt_ != NULL) | |
2811 | { | |
2812 | if (this->tls_get_addr_->is_undefined() | |
2813 | || this->tls_get_addr_->is_from_dynobj()) | |
2814 | { | |
2815 | // Make it seem as if references to __tls_get_addr are | |
2816 | // really to __tls_get_addr_opt, so the latter symbol is | |
2817 | // made dynamic, not the former. | |
2818 | this->tls_get_addr_->clear_in_reg(); | |
2819 | this->tls_get_addr_opt_->set_in_reg(); | |
2820 | } | |
2821 | // We have a non-dynamic definition for __tls_get_addr. | |
2822 | // Make __tls_get_addr_opt the same, if it does not already have | |
2823 | // a non-dynamic definition. | |
2824 | else if (this->tls_get_addr_opt_->is_undefined() | |
2825 | || this->tls_get_addr_opt_->is_from_dynobj()) | |
2826 | { | |
2827 | Sized_symbol<size>* from | |
2828 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_); | |
2829 | Sized_symbol<size>* to | |
2830 | = static_cast<Sized_symbol<size>*>(this->tls_get_addr_opt_); | |
2831 | symtab->clone<size>(to, from); | |
2832 | } | |
2833 | } | |
26a4e9cb AM |
2834 | } |
2835 | ||
cf43a2fe AM |
2836 | // Set up PowerPC target specific relobj. |
2837 | ||
2838 | template<int size, bool big_endian> | |
2839 | Object* | |
2840 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2841 | const std::string& name, | |
2842 | Input_file* input_file, | |
2843 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2844 | { | |
2845 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2846 | // ET_EXEC files are valid input for --just-symbols/-R, |
2847 | // and we treat them as relocatable objects. | |
2848 | if (et == elfcpp::ET_REL | |
2849 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2850 | { |
2851 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2852 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2853 | obj->setup(); |
2854 | return obj; | |
2855 | } | |
2856 | else if (et == elfcpp::ET_DYN) | |
2857 | { | |
dc3714f3 AM |
2858 | Powerpc_dynobj<size, big_endian>* obj = |
2859 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2860 | obj->setup(); |
2861 | return obj; | |
2862 | } | |
2863 | else | |
2864 | { | |
c9269dff | 2865 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2866 | return NULL; |
2867 | } | |
2868 | } | |
2869 | ||
2870 | template<int size, bool big_endian> | |
2871 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2872 | { | |
2873 | public: | |
2874 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2875 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2876 | ||
2877 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2878 | : Output_data_got<size, big_endian>(), | |
2879 | symtab_(symtab), layout_(layout), | |
2880 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2881 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2882 | { |
2883 | if (size == 64) | |
2884 | this->set_addralign(256); | |
2885 | } | |
cf43a2fe | 2886 | |
e84fe78f AM |
2887 | // Override all the Output_data_got methods we use so as to first call |
2888 | // reserve_ent(). | |
2889 | bool | |
2890 | add_global(Symbol* gsym, unsigned int got_type) | |
2891 | { | |
2892 | this->reserve_ent(); | |
2893 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2894 | } | |
2895 | ||
2896 | bool | |
2897 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2898 | { | |
2899 | this->reserve_ent(); | |
2900 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2901 | } | |
2902 | ||
2903 | bool | |
2904 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2905 | { return this->add_global_plt(gsym, got_type); } | |
2906 | ||
2907 | void | |
2908 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2909 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2910 | { | |
2911 | this->reserve_ent(); | |
2912 | Output_data_got<size, big_endian>:: | |
2913 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2914 | } | |
2915 | ||
2916 | void | |
2917 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2918 | Output_data_reloc_generic* rel_dyn, | |
2919 | unsigned int r_type_1, unsigned int r_type_2) | |
2920 | { | |
aacb3b6d AM |
2921 | if (gsym->has_got_offset(got_type)) |
2922 | return; | |
2923 | ||
e84fe78f AM |
2924 | this->reserve_ent(2); |
2925 | Output_data_got<size, big_endian>:: | |
2926 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2927 | } | |
2928 | ||
2929 | bool | |
2930 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2931 | { | |
2932 | this->reserve_ent(); | |
2933 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2934 | got_type); | |
2935 | } | |
2936 | ||
2937 | bool | |
2938 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2939 | { | |
2940 | this->reserve_ent(); | |
2941 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2942 | got_type); | |
2943 | } | |
2944 | ||
2945 | bool | |
2946 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2947 | { return this->add_local_plt(object, sym_index, got_type); } | |
2948 | ||
2949 | void | |
2950 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2951 | unsigned int got_type, | |
2952 | Output_data_reloc_generic* rel_dyn, | |
2953 | unsigned int r_type) | |
2954 | { | |
aacb3b6d AM |
2955 | if (object->local_has_got_offset(sym_index, got_type)) |
2956 | return; | |
2957 | ||
e84fe78f AM |
2958 | this->reserve_ent(2); |
2959 | Output_data_got<size, big_endian>:: | |
2960 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2961 | } | |
2962 | ||
2963 | unsigned int | |
2964 | add_constant(Valtype constant) | |
2965 | { | |
2966 | this->reserve_ent(); | |
2967 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2968 | } | |
2969 | ||
dd93cd0a AM |
2970 | unsigned int |
2971 | add_constant_pair(Valtype c1, Valtype c2) | |
2972 | { | |
2973 | this->reserve_ent(2); | |
e84fe78f | 2974 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2975 | } |
2976 | ||
2977 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2978 | unsigned int |
2979 | g_o_t() const | |
2980 | { | |
2981 | return this->got_offset(this->header_index_); | |
42cacb20 | 2982 | } |
cf43a2fe | 2983 | |
dd93cd0a AM |
2984 | // Offset of base used to access the GOT/TOC. |
2985 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2986 | Valtype |
dd93cd0a AM |
2987 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2988 | { | |
2989 | if (size == 32) | |
2990 | return this->g_o_t(); | |
2991 | else | |
2992 | return (this->output_section()->address() | |
2993 | + object->toc_base_offset() | |
2994 | - this->address()); | |
2995 | } | |
2996 | ||
cf43a2fe AM |
2997 | // Ensure our GOT has a header. |
2998 | void | |
2999 | set_final_data_size() | |
3000 | { | |
3001 | if (this->header_ent_cnt_ != 0) | |
3002 | this->make_header(); | |
3003 | Output_data_got<size, big_endian>::set_final_data_size(); | |
3004 | } | |
3005 | ||
3006 | // First word of GOT header needs some values that are not | |
3007 | // handled by Output_data_got so poke them in here. | |
3008 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
3009 | void | |
3010 | do_write(Output_file* of) | |
3011 | { | |
c9824451 AM |
3012 | Valtype val = 0; |
3013 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
3014 | val = this->layout_->dynamic_section()->address(); | |
3015 | if (size == 64) | |
3016 | val = this->output_section()->address() + 0x8000; | |
3017 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
3018 | Output_data_got<size, big_endian>::do_write(of); |
3019 | } | |
3020 | ||
3021 | private: | |
3022 | void | |
3023 | reserve_ent(unsigned int cnt = 1) | |
3024 | { | |
3025 | if (this->header_ent_cnt_ == 0) | |
3026 | return; | |
3027 | if (this->num_entries() + cnt > this->header_index_) | |
3028 | this->make_header(); | |
3029 | } | |
3030 | ||
3031 | void | |
3032 | make_header() | |
3033 | { | |
3034 | this->header_ent_cnt_ = 0; | |
3035 | this->header_index_ = this->num_entries(); | |
3036 | if (size == 32) | |
3037 | { | |
3038 | Output_data_got<size, big_endian>::add_constant(0); | |
3039 | Output_data_got<size, big_endian>::add_constant(0); | |
3040 | Output_data_got<size, big_endian>::add_constant(0); | |
3041 | ||
3042 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
3043 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
3044 | if (gotsym != NULL) | |
3045 | { | |
3046 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
3047 | sym->set_value(this->g_o_t()); | |
3048 | } | |
3049 | else | |
3050 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
3051 | Symbol_table::PREDEFINED, | |
3052 | this, this->g_o_t(), 0, | |
3053 | elfcpp::STT_OBJECT, | |
3054 | elfcpp::STB_LOCAL, | |
3055 | elfcpp::STV_HIDDEN, 0, | |
3056 | false, false); | |
cf43a2fe AM |
3057 | } |
3058 | else | |
3059 | Output_data_got<size, big_endian>::add_constant(0); | |
3060 | } | |
3061 | ||
3062 | // Stashed pointers. | |
3063 | Symbol_table* symtab_; | |
3064 | Layout* layout_; | |
3065 | ||
3066 | // GOT header size. | |
3067 | unsigned int header_ent_cnt_; | |
3068 | // GOT header index. | |
3069 | unsigned int header_index_; | |
42cacb20 DE |
3070 | }; |
3071 | ||
3072 | // Get the GOT section, creating it if necessary. | |
3073 | ||
3074 | template<int size, bool big_endian> | |
cf43a2fe | 3075 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
3076 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
3077 | Layout* layout) | |
3078 | { | |
3079 | if (this->got_ == NULL) | |
3080 | { | |
3081 | gold_assert(symtab != NULL && layout != NULL); | |
3082 | ||
cf43a2fe AM |
3083 | this->got_ |
3084 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
3085 | |
3086 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
3087 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 3088 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
3089 | } |
3090 | ||
3091 | return this->got_; | |
3092 | } | |
3093 | ||
3094 | // Get the dynamic reloc section, creating it if necessary. | |
3095 | ||
3096 | template<int size, bool big_endian> | |
3097 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3098 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
3099 | { | |
3100 | if (this->rela_dyn_ == NULL) | |
3101 | { | |
3102 | gold_assert(layout != NULL); | |
3103 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
3104 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
3105 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
3106 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
3107 | } |
3108 | return this->rela_dyn_; | |
3109 | } | |
3110 | ||
b3ccdeb5 AM |
3111 | // Similarly, but for ifunc symbols get the one for ifunc. |
3112 | ||
3113 | template<int size, bool big_endian> | |
3114 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
3115 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
3116 | Layout* layout, | |
3117 | bool for_ifunc) | |
3118 | { | |
3119 | if (!for_ifunc) | |
3120 | return this->rela_dyn_section(layout); | |
3121 | ||
3122 | if (this->iplt_ == NULL) | |
3123 | this->make_iplt_section(symtab, layout); | |
3124 | return this->iplt_->rel_plt(); | |
3125 | } | |
3126 | ||
ec661b9d AM |
3127 | class Stub_control |
3128 | { | |
3129 | public: | |
3130 | // Determine the stub group size. The group size is the absolute | |
3131 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 3132 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 3133 | // the stubbed branches. |
1c3a5fbe AM |
3134 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
3135 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
3136 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
3137 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
3138 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 3139 | { |
ec661b9d AM |
3140 | } |
3141 | ||
3142 | // Return true iff input section can be handled by current stub | |
3143 | // group. | |
3144 | bool | |
3145 | can_add_to_stub_group(Output_section* o, | |
3146 | const Output_section::Input_section* i, | |
3147 | bool has14); | |
3148 | ||
3149 | const Output_section::Input_section* | |
3150 | owner() | |
3151 | { return owner_; } | |
3152 | ||
3153 | Output_section* | |
3154 | output_section() | |
3155 | { return output_section_; } | |
3156 | ||
a20605cf AM |
3157 | void |
3158 | set_output_and_owner(Output_section* o, | |
3159 | const Output_section::Input_section* i) | |
3160 | { | |
3161 | this->output_section_ = o; | |
3162 | this->owner_ = i; | |
3163 | } | |
3164 | ||
ec661b9d AM |
3165 | private: |
3166 | typedef enum | |
3167 | { | |
1c3a5fbe | 3168 | // Initial state. |
ec661b9d | 3169 | NO_GROUP, |
1c3a5fbe | 3170 | // Adding group sections before the stubs. |
ec661b9d | 3171 | FINDING_STUB_SECTION, |
1c3a5fbe | 3172 | // Adding group sections after the stubs. |
ec661b9d AM |
3173 | HAS_STUB_SECTION |
3174 | } State; | |
3175 | ||
ec661b9d | 3176 | uint32_t stub_group_size_; |
a5018ae5 | 3177 | bool stubs_always_after_branch_; |
ec661b9d | 3178 | bool suppress_size_errors_; |
1c3a5fbe AM |
3179 | // True if a stub group can serve multiple output sections. |
3180 | bool multi_os_; | |
3181 | State state_; | |
8a37735f AM |
3182 | // Current max size of group. Starts at stub_group_size_ but is |
3183 | // reduced to stub_group_size_/1024 on seeing a section with | |
3184 | // external conditional branches. | |
3185 | uint32_t group_size_; | |
a5018ae5 | 3186 | uint64_t group_start_addr_; |
57f6d32d AM |
3187 | // owner_ and output_section_ specify the section to which stubs are |
3188 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
3189 | const Output_section::Input_section* owner_; |
3190 | Output_section* output_section_; | |
3191 | }; | |
3192 | ||
0cfdc767 | 3193 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
3194 | // group. Sections are presented to this function in order, |
3195 | // so the first section is the head of the group. | |
ec661b9d AM |
3196 | |
3197 | bool | |
3198 | Stub_control::can_add_to_stub_group(Output_section* o, | |
3199 | const Output_section::Input_section* i, | |
3200 | bool has14) | |
3201 | { | |
ec661b9d AM |
3202 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
3203 | uint64_t this_size; | |
3204 | uint64_t start_addr = o->address(); | |
3205 | ||
3206 | if (whole_sec) | |
3207 | // .init and .fini sections are pasted together to form a single | |
3208 | // function. We can't be adding stubs in the middle of the function. | |
3209 | this_size = o->data_size(); | |
3210 | else | |
3211 | { | |
3212 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
3213 | this_size = i->data_size(); | |
3214 | } | |
57f6d32d | 3215 | |
a5018ae5 | 3216 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
3217 | uint32_t group_size = this->stub_group_size_; |
3218 | if (has14) | |
3219 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 3220 | |
57f6d32d | 3221 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
3222 | gold_warning(_("%s:%s exceeds group size"), |
3223 | i->relobj()->name().c_str(), | |
3224 | i->relobj()->section_name(i->shndx()).c_str()); | |
3225 | ||
afe002dd AM |
3226 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
3227 | has14 ? " 14bit" : "", | |
3228 | i->relobj()->name().c_str(), | |
3229 | i->relobj()->section_name(i->shndx()).c_str(), | |
3230 | (long long) this_size, | |
a5018ae5 AM |
3231 | (this->state_ == NO_GROUP |
3232 | ? this_size | |
3233 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 3234 | |
1c3a5fbe AM |
3235 | if (this->state_ == NO_GROUP) |
3236 | { | |
3237 | // Only here on very first use of Stub_control | |
3238 | this->owner_ = i; | |
3239 | this->output_section_ = o; | |
3240 | this->state_ = FINDING_STUB_SECTION; | |
3241 | this->group_size_ = group_size; | |
3242 | this->group_start_addr_ = start_addr; | |
3243 | return true; | |
3244 | } | |
3245 | else if (!this->multi_os_ && this->output_section_ != o) | |
3246 | ; | |
3247 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 3248 | { |
a5018ae5 | 3249 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 3250 | // group? |
a5018ae5 | 3251 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 3252 | return true; |
ec661b9d | 3253 | } |
a5018ae5 | 3254 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 3255 | { |
a5018ae5 AM |
3256 | if ((whole_sec && this->output_section_ == o) |
3257 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3258 | { |
a5018ae5 | 3259 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
3260 | this->owner_ = i; |
3261 | this->output_section_ = o; | |
a5018ae5 | 3262 | return true; |
57f6d32d | 3263 | } |
a5018ae5 AM |
3264 | // The group before the stubs has reached maximum size. |
3265 | // Now see about adding sections after the stubs to the | |
3266 | // group. If the current section has a 14-bit branch and | |
3267 | // the group before the stubs exceeds group_size_ (because | |
3268 | // they didn't have 14-bit branches), don't add sections | |
3269 | // after the stubs: The size of stubs for such a large | |
3270 | // group may exceed the reach of a 14-bit branch. | |
3271 | if (!this->stubs_always_after_branch_ | |
3272 | && this_size <= this->group_size_ | |
3273 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 3274 | { |
a5018ae5 AM |
3275 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
3276 | this->state_ = HAS_STUB_SECTION; | |
3277 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
3278 | return true; |
3279 | } | |
ec661b9d | 3280 | } |
a5018ae5 AM |
3281 | else |
3282 | gold_unreachable(); | |
57f6d32d | 3283 | |
1c3a5fbe AM |
3284 | gold_debug(DEBUG_TARGET, |
3285 | !this->multi_os_ && this->output_section_ != o | |
3286 | ? "nope, new output section\n" | |
3287 | : "nope, didn't fit\n"); | |
afe002dd | 3288 | |
57f6d32d AM |
3289 | // The section fails to fit in the current group. Set up a few |
3290 | // things for the next group. owner_ and output_section_ will be | |
3291 | // set later after we've retrieved those values for the current | |
3292 | // group. | |
3293 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 3294 | this->group_size_ = group_size; |
a5018ae5 | 3295 | this->group_start_addr_ = start_addr; |
57f6d32d | 3296 | return false; |
ec661b9d AM |
3297 | } |
3298 | ||
3299 | // Look over all the input sections, deciding where to place stubs. | |
3300 | ||
3301 | template<int size, bool big_endian> | |
3302 | void | |
3303 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
3304 | const Task*, |
3305 | bool no_size_errors) | |
ec661b9d | 3306 | { |
1c3a5fbe AM |
3307 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
3308 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
3309 | |
3310 | // Group input sections and insert stub table | |
a3e60ddb AM |
3311 | Stub_table_owner* table_owner = NULL; |
3312 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
3313 | Layout::Section_list section_list; |
3314 | layout->get_executable_sections(§ion_list); | |
3315 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
3316 | for (Layout::Section_list::iterator o = section_list.begin(); |
3317 | o != section_list.end(); | |
ec661b9d AM |
3318 | ++o) |
3319 | { | |
3320 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
3321 | for (Input_section_list::const_iterator i |
3322 | = (*o)->input_sections().begin(); | |
3323 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
3324 | ++i) |
3325 | { | |
a3e60ddb AM |
3326 | if (i->is_input_section() |
3327 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
3328 | { |
3329 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
3330 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
3331 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
3332 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
3333 | { | |
a3e60ddb AM |
3334 | table_owner->output_section = stub_control.output_section(); |
3335 | table_owner->owner = stub_control.owner(); | |
a20605cf | 3336 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 3337 | table_owner = NULL; |
ec661b9d | 3338 | } |
a3e60ddb AM |
3339 | if (table_owner == NULL) |
3340 | { | |
3341 | table_owner = new Stub_table_owner; | |
3342 | tables.push_back(table_owner); | |
3343 | } | |
3344 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
3345 | } |
3346 | } | |
3347 | } | |
a3e60ddb | 3348 | if (table_owner != NULL) |
0cfdc767 | 3349 | { |
a5018ae5 AM |
3350 | table_owner->output_section = stub_control.output_section(); |
3351 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
3352 | } |
3353 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
3354 | t != tables.end(); | |
3355 | ++t) | |
3356 | { | |
3357 | Stub_table<size, big_endian>* stub_table; | |
3358 | ||
3359 | if ((*t)->owner->is_input_section()) | |
3360 | stub_table = new Stub_table<size, big_endian>(this, | |
3361 | (*t)->output_section, | |
590b87ff AM |
3362 | (*t)->owner, |
3363 | this->stub_tables_.size()); | |
a3e60ddb AM |
3364 | else if ((*t)->owner->is_relaxed_input_section()) |
3365 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
3366 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 3367 | else |
a3e60ddb AM |
3368 | gold_unreachable(); |
3369 | this->stub_tables_.push_back(stub_table); | |
3370 | delete *t; | |
0cfdc767 | 3371 | } |
ec661b9d AM |
3372 | } |
3373 | ||
32f59844 | 3374 | template<int size> |
a3e60ddb AM |
3375 | static unsigned long |
3376 | max_branch_delta (unsigned int r_type) | |
3377 | { | |
3378 | if (r_type == elfcpp::R_POWERPC_REL14 | |
3379 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
3380 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
3381 | return 1L << 15; | |
3382 | if (r_type == elfcpp::R_POWERPC_REL24 | |
32f59844 | 3383 | || (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
a3e60ddb AM |
3384 | || r_type == elfcpp::R_PPC_PLTREL24 |
3385 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
3386 | return 1L << 25; | |
3387 | return 0; | |
3388 | } | |
3389 | ||
7e57d19e AM |
3390 | // Return whether this branch is going via a plt call stub. |
3391 | ||
3392 | template<int size, bool big_endian> | |
3393 | bool | |
3394 | Target_powerpc<size, big_endian>::Branch_info::mark_pltcall( | |
3395 | Powerpc_relobj<size, big_endian>* ppc_object, | |
3396 | unsigned int shndx, | |
3397 | Address offset, | |
3398 | Target_powerpc* target, | |
3399 | Symbol_table* symtab) | |
3400 | { | |
3401 | if (this->object_ != ppc_object | |
3402 | || this->shndx_ != shndx | |
3403 | || this->offset_ != offset) | |
3404 | return false; | |
3405 | ||
3406 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
3407 | if (sym != NULL && sym->is_forwarder()) | |
3408 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3409 | if (target->replace_tls_get_addr(sym)) |
3410 | sym = target->tls_get_addr_opt(); | |
7e57d19e AM |
3411 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
3412 | if (gsym != NULL | |
7ee7ff70 AM |
3413 | ? (gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
3414 | && !target->is_elfv2_localentry0(gsym)) | |
3415 | : (this->object_->local_has_plt_offset(this->r_sym_) | |
3416 | && !target->is_elfv2_localentry0(this->object_, this->r_sym_))) | |
7e57d19e AM |
3417 | { |
3418 | this->tocsave_ = 1; | |
3419 | return true; | |
3420 | } | |
3421 | return false; | |
3422 | } | |
3423 | ||
ec661b9d AM |
3424 | // If this branch needs a plt call stub, or a long branch stub, make one. |
3425 | ||
3426 | template<int size, bool big_endian> | |
a3e60ddb | 3427 | bool |
ec661b9d AM |
3428 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
3429 | Stub_table<size, big_endian>* stub_table, | |
3430 | Stub_table<size, big_endian>* ifunc_stub_table, | |
3431 | Symbol_table* symtab) const | |
3432 | { | |
3433 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
88b8e639 AM |
3434 | Target_powerpc<size, big_endian>* target = |
3435 | static_cast<Target_powerpc<size, big_endian>*>( | |
3436 | parameters->sized_target<size, big_endian>()); | |
34e0882b AM |
3437 | if (sym != NULL && sym->is_forwarder()) |
3438 | sym = symtab->resolve_forwards(sym); | |
2778747c AM |
3439 | if (target->replace_tls_get_addr(sym)) |
3440 | sym = target->tls_get_addr_opt(); | |
34e0882b | 3441 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); |
dc60b26d AM |
3442 | bool ok = true; |
3443 | ||
ec661b9d | 3444 | if (gsym != NULL |
88b8e639 | 3445 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
3446 | : this->object_->local_has_plt_offset(this->r_sym_)) |
3447 | { | |
9055360d AM |
3448 | if (size == 64 |
3449 | && gsym != NULL | |
3450 | && target->abiversion() >= 2 | |
3451 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3452 | && !is_branch_reloc<size>(this->r_type_)) |
9055360d AM |
3453 | target->glink_section()->add_global_entry(gsym); |
3454 | else | |
ec661b9d | 3455 | { |
64b5d6d7 AM |
3456 | if (stub_table == NULL |
3457 | && !(size == 32 | |
3458 | && gsym != NULL | |
3459 | && !parameters->options().output_is_position_independent() | |
32f59844 | 3460 | && !is_branch_reloc<size>(this->r_type_))) |
9055360d AM |
3461 | stub_table = this->object_->stub_table(this->shndx_); |
3462 | if (stub_table == NULL) | |
3463 | { | |
64b5d6d7 AM |
3464 | // This is a ref from a data section to an ifunc symbol, |
3465 | // or a non-branch reloc for which we always want to use | |
3466 | // one set of stubs for resolving function addresses. | |
9055360d AM |
3467 | stub_table = ifunc_stub_table; |
3468 | } | |
3469 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
3470 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3471 | if (from != invalid_address) | |
3472 | from += (this->object_->output_section(this->shndx_)->address() | |
3473 | + this->offset_); | |
9055360d | 3474 | if (gsym != NULL) |
dc60b26d AM |
3475 | ok = stub_table->add_plt_call_entry(from, |
3476 | this->object_, gsym, | |
7e57d19e AM |
3477 | this->r_type_, this->addend_, |
3478 | this->tocsave_); | |
9055360d | 3479 | else |
dc60b26d AM |
3480 | ok = stub_table->add_plt_call_entry(from, |
3481 | this->object_, this->r_sym_, | |
7e57d19e AM |
3482 | this->r_type_, this->addend_, |
3483 | this->tocsave_); | |
ec661b9d | 3484 | } |
ec661b9d AM |
3485 | } |
3486 | else | |
3487 | { | |
32f59844 | 3488 | Address max_branch_offset = max_branch_delta<size>(this->r_type_); |
a3e60ddb AM |
3489 | if (max_branch_offset == 0) |
3490 | return true; | |
ec661b9d AM |
3491 | Address from = this->object_->get_output_section_offset(this->shndx_); |
3492 | gold_assert(from != invalid_address); | |
3493 | from += (this->object_->output_section(this->shndx_)->address() | |
3494 | + this->offset_); | |
3495 | Address to; | |
3496 | if (gsym != NULL) | |
3497 | { | |
3498 | switch (gsym->source()) | |
3499 | { | |
3500 | case Symbol::FROM_OBJECT: | |
3501 | { | |
3502 | Object* symobj = gsym->object(); | |
3503 | if (symobj->is_dynamic() | |
3504 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 3505 | return true; |
ec661b9d AM |
3506 | bool is_ordinary; |
3507 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
3508 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 3509 | return true; |
ec661b9d AM |
3510 | } |
3511 | break; | |
3512 | ||
3513 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 3514 | return true; |
ec661b9d AM |
3515 | |
3516 | default: | |
3517 | break; | |
3518 | } | |
3519 | Symbol_table::Compute_final_value_status status; | |
3520 | to = symtab->compute_final_value<size>(gsym, &status); | |
3521 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 3522 | return true; |
9055360d AM |
3523 | if (size == 64) |
3524 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
3525 | } |
3526 | else | |
3527 | { | |
3528 | const Symbol_value<size>* psymval | |
3529 | = this->object_->local_symbol(this->r_sym_); | |
3530 | Symbol_value<size> symval; | |
0f125432 CC |
3531 | if (psymval->is_section_symbol()) |
3532 | symval.set_is_section_symbol(); | |
ec661b9d AM |
3533 | typedef Sized_relobj_file<size, big_endian> ObjType; |
3534 | typename ObjType::Compute_final_local_value_status status | |
3535 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
3536 | &symval, symtab); | |
3537 | if (status != ObjType::CFLV_OK | |
3538 | || !symval.has_output_value()) | |
a3e60ddb | 3539 | return true; |
ec661b9d | 3540 | to = symval.value(this->object_, 0); |
9055360d AM |
3541 | if (size == 64) |
3542 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 3543 | } |
cbcb23fa AM |
3544 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
3545 | to += this->addend_; | |
ec661b9d AM |
3546 | if (stub_table == NULL) |
3547 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 3548 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
3549 | { |
3550 | unsigned int dest_shndx; | |
1611bc4a AM |
3551 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
3552 | &to, &dest_shndx)) | |
3553 | return true; | |
ec661b9d AM |
3554 | } |
3555 | Address delta = to - from; | |
32f59844 AM |
3556 | if (delta + max_branch_offset >= 2 * max_branch_offset |
3557 | || (size == 64 | |
3558 | && this->r_type_ == elfcpp::R_PPC64_REL24_NOTOC | |
3559 | && (gsym != NULL | |
3560 | ? this->object_->ppc64_needs_toc(gsym) | |
3561 | : this->object_->ppc64_needs_toc(this->r_sym_)))) | |
ec661b9d | 3562 | { |
0cfdc767 AM |
3563 | if (stub_table == NULL) |
3564 | { | |
3565 | gold_warning(_("%s:%s: branch in non-executable section," | |
3566 | " no long branch stub for you"), | |
3567 | this->object_->name().c_str(), | |
3568 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 3569 | return true; |
0cfdc767 | 3570 | } |
d49044c7 AM |
3571 | bool save_res = (size == 64 |
3572 | && gsym != NULL | |
3573 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
3574 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
3575 | ok = stub_table->add_long_branch_entry(this->object_, |
3576 | this->r_type_, | |
3577 | from, to, save_res); | |
ec661b9d AM |
3578 | } |
3579 | } | |
dc60b26d AM |
3580 | if (!ok) |
3581 | gold_debug(DEBUG_TARGET, | |
3582 | "branch at %s:%s+%#lx\n" | |
3583 | "can't reach stub attached to %s:%s", | |
3584 | this->object_->name().c_str(), | |
3585 | this->object_->section_name(this->shndx_).c_str(), | |
3586 | (unsigned long) this->offset_, | |
3587 | stub_table->relobj()->name().c_str(), | |
3588 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
3589 | ||
3590 | return ok; | |
ec661b9d AM |
3591 | } |
3592 | ||
3593 | // Relaxation hook. This is where we do stub generation. | |
3594 | ||
3595 | template<int size, bool big_endian> | |
3596 | bool | |
3597 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
3598 | const Input_objects*, | |
3599 | Symbol_table* symtab, | |
3600 | Layout* layout, | |
3601 | const Task* task) | |
3602 | { | |
3603 | unsigned int prev_brlt_size = 0; | |
3604 | if (pass == 1) | |
ec661b9d | 3605 | { |
b4f7960d AM |
3606 | bool thread_safe |
3607 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
3608 | if (size == 64 | |
3609 | && this->abiversion() < 2 | |
3610 | && !thread_safe | |
3611 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 3612 | { |
e2458743 | 3613 | static const char* const thread_starter[] = |
9e69ed50 AM |
3614 | { |
3615 | "pthread_create", | |
3616 | /* libstdc++ */ | |
3617 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
3618 | /* librt */ | |
3619 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
3620 | "mq_notify", "create_timer", | |
3621 | /* libanl */ | |
3622 | "getaddrinfo_a", | |
3623 | /* libgomp */ | |
80272b8c | 3624 | "GOMP_parallel", |
9e69ed50 | 3625 | "GOMP_parallel_start", |
80272b8c | 3626 | "GOMP_parallel_loop_static", |
9e69ed50 | 3627 | "GOMP_parallel_loop_static_start", |
80272b8c | 3628 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 3629 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 3630 | "GOMP_parallel_loop_guided", |
9e69ed50 | 3631 | "GOMP_parallel_loop_guided_start", |
80272b8c | 3632 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 3633 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 3634 | "GOMP_parallel_sections", |
43819297 | 3635 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
3636 | /* libgo */ |
3637 | "__go_go", | |
9e69ed50 AM |
3638 | }; |
3639 | ||
e2458743 AM |
3640 | if (parameters->options().shared()) |
3641 | thread_safe = true; | |
3642 | else | |
9e69ed50 | 3643 | { |
e2458743 AM |
3644 | for (unsigned int i = 0; |
3645 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
3646 | i++) | |
3647 | { | |
3648 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
3649 | thread_safe = (sym != NULL | |
3650 | && sym->in_reg() | |
3651 | && sym->in_real_elf()); | |
3652 | if (thread_safe) | |
3653 | break; | |
3654 | } | |
9e69ed50 | 3655 | } |
ec661b9d | 3656 | } |
9e69ed50 | 3657 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
3658 | } |
3659 | ||
3660 | if (pass == 1) | |
3661 | { | |
3662 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
3663 | bool no_size_errors = true; | |
3664 | if (this->stub_group_size_ == 1) | |
3665 | this->stub_group_size_ = 0x1c00000; | |
3666 | else if (this->stub_group_size_ == -1) | |
3667 | this->stub_group_size_ = -0x1e00000; | |
3668 | else | |
3669 | no_size_errors = false; | |
3670 | this->group_sections(layout, task, no_size_errors); | |
3671 | } | |
3672 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
3673 | { | |
3674 | this->branch_lookup_table_.clear(); | |
3675 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3676 | p != this->stub_tables_.end(); | |
3677 | ++p) | |
3678 | { | |
3679 | (*p)->clear_stubs(true); | |
3680 | } | |
3681 | this->stub_tables_.clear(); | |
3682 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 3683 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
3684 | program_name, this->stub_group_size_); |
3685 | this->group_sections(layout, task, true); | |
ec661b9d AM |
3686 | } |
3687 | ||
3688 | // We need address of stub tables valid for make_stub. | |
3689 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3690 | p != this->stub_tables_.end(); | |
3691 | ++p) | |
3692 | { | |
3693 | const Powerpc_relobj<size, big_endian>* object | |
3694 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
3695 | Address off = object->get_output_section_offset((*p)->shndx()); | |
3696 | gold_assert(off != invalid_address); | |
3697 | Output_section* os = (*p)->output_section(); | |
3698 | (*p)->set_address_and_size(os, off); | |
3699 | } | |
3700 | ||
9e69ed50 AM |
3701 | if (pass != 1) |
3702 | { | |
3703 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
3704 | prev_brlt_size = this->branch_lookup_table_.size(); | |
3705 | this->branch_lookup_table_.clear(); | |
3706 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3707 | p != this->stub_tables_.end(); | |
3708 | ++p) | |
3709 | { | |
a3e60ddb | 3710 | (*p)->clear_stubs(false); |
9e69ed50 AM |
3711 | } |
3712 | } | |
3713 | ||
3714 | // Build all the stubs. | |
a3e60ddb | 3715 | this->relax_failed_ = false; |
ec661b9d AM |
3716 | Stub_table<size, big_endian>* ifunc_stub_table |
3717 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
3718 | Stub_table<size, big_endian>* one_stub_table | |
3719 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
3720 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3721 | b != this->branch_info_.end(); | |
3722 | b++) | |
3723 | { | |
a3e60ddb AM |
3724 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
3725 | && !this->relax_failed_) | |
3726 | { | |
3727 | this->relax_failed_ = true; | |
3728 | this->relax_fail_count_++; | |
3729 | if (this->relax_fail_count_ < 3) | |
3730 | return true; | |
3731 | } | |
ec661b9d | 3732 | } |
32f59844 AM |
3733 | bool do_resize = false; |
3734 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3735 | p != this->stub_tables_.end(); | |
3736 | ++p) | |
3737 | if ((*p)->need_resize()) | |
3738 | { | |
3739 | do_resize = true; | |
3740 | break; | |
3741 | } | |
3742 | if (do_resize) | |
3743 | { | |
3744 | this->branch_lookup_table_.clear(); | |
3745 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3746 | p != this->stub_tables_.end(); | |
3747 | ++p) | |
3748 | (*p)->set_resizing(true); | |
3749 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
3750 | b != this->branch_info_.end(); | |
3751 | b++) | |
3752 | { | |
3753 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) | |
3754 | && !this->relax_failed_) | |
3755 | { | |
3756 | this->relax_failed_ = true; | |
3757 | this->relax_fail_count_++; | |
3758 | if (this->relax_fail_count_ < 3) | |
3759 | return true; | |
3760 | } | |
3761 | } | |
3762 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3763 | p != this->stub_tables_.end(); | |
3764 | ++p) | |
3765 | (*p)->set_resizing(false); | |
3766 | } | |
ec661b9d | 3767 | |
9e69ed50 | 3768 | // Did anything change size? |
ec661b9d AM |
3769 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
3770 | bool again = num_huge_branches != prev_brlt_size; | |
3771 | if (size == 64 && num_huge_branches != 0) | |
3772 | this->make_brlt_section(layout); | |
3773 | if (size == 64 && again) | |
3774 | this->brlt_section_->set_current_size(num_huge_branches); | |
3775 | ||
be897fb7 AM |
3776 | for (typename Stub_tables::reverse_iterator p = this->stub_tables_.rbegin(); |
3777 | p != this->stub_tables_.rend(); | |
3778 | ++p) | |
3779 | (*p)->remove_eh_frame(layout); | |
3780 | ||
3781 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3782 | p != this->stub_tables_.end(); | |
3783 | ++p) | |
3784 | (*p)->add_eh_frame(layout); | |
3785 | ||
ec661b9d AM |
3786 | typedef Unordered_set<Output_section*> Output_sections; |
3787 | Output_sections os_need_update; | |
3788 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3789 | p != this->stub_tables_.end(); | |
3790 | ++p) | |
3791 | { | |
3792 | if ((*p)->size_update()) | |
3793 | { | |
3794 | again = true; | |
3795 | os_need_update.insert((*p)->output_section()); | |
3796 | } | |
3797 | } | |
3798 | ||
9e69ed50 AM |
3799 | // Set output section offsets for all input sections in an output |
3800 | // section that just changed size. Anything past the stubs will | |
3801 | // need updating. | |
ec661b9d AM |
3802 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3803 | p != os_need_update.end(); | |
3804 | p++) | |
3805 | { | |
3806 | Output_section* os = *p; | |
3807 | Address off = 0; | |
3808 | typedef Output_section::Input_section_list Input_section_list; | |
3809 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3810 | i != os->input_sections().end(); | |
3811 | ++i) | |
3812 | { | |
3813 | off = align_address(off, i->addralign()); | |
3814 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3815 | i->relobj()->set_section_offset(i->shndx(), off); | |
3816 | if (i->is_relaxed_input_section()) | |
3817 | { | |
3818 | Stub_table<size, big_endian>* stub_table | |
3819 | = static_cast<Stub_table<size, big_endian>*>( | |
3820 | i->relaxed_input_section()); | |
6395d38b HS |
3821 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3822 | off += stub_table_size; | |
3823 | // After a few iterations, set current stub table size | |
3824 | // as min size threshold, so later stub tables can only | |
3825 | // grow in size. | |
3826 | if (pass >= 4) | |
3827 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3828 | } |
3829 | else | |
3830 | off += i->data_size(); | |
3831 | } | |
6830ee24 AM |
3832 | // If .branch_lt is part of this output section, then we have |
3833 | // just done the offset adjustment. | |
ec661b9d AM |
3834 | os->clear_section_offsets_need_adjustment(); |
3835 | } | |
3836 | ||
3837 | if (size == 64 | |
3838 | && !again | |
3839 | && num_huge_branches != 0 | |
3840 | && parameters->options().output_is_position_independent()) | |
3841 | { | |
3842 | // Fill in the BRLT relocs. | |
06f30c9d | 3843 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3844 | for (typename Branch_lookup_table::const_iterator p |
3845 | = this->branch_lookup_table_.begin(); | |
3846 | p != this->branch_lookup_table_.end(); | |
3847 | ++p) | |
3848 | { | |
3849 | this->brlt_section_->add_reloc(p->first, p->second); | |
3850 | } | |
06f30c9d | 3851 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d | 3852 | } |
590b87ff AM |
3853 | |
3854 | if (!again | |
3855 | && (parameters->options().user_set_emit_stub_syms() | |
3856 | ? parameters->options().emit_stub_syms() | |
3857 | : (size == 64 | |
3858 | || parameters->options().output_is_position_independent() | |
3859 | || parameters->options().emit_relocs()))) | |
3860 | { | |
3861 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3862 | p != this->stub_tables_.end(); | |
3863 | ++p) | |
3864 | (*p)->define_stub_syms(symtab); | |
3865 | ||
3866 | if (this->glink_ != NULL) | |
3867 | { | |
9e390558 | 3868 | int stub_size = this->glink_->pltresolve_size(); |
590b87ff AM |
3869 | Address value = -stub_size; |
3870 | if (size == 64) | |
3871 | { | |
3872 | value = 8; | |
3873 | stub_size -= 8; | |
3874 | } | |
3875 | this->define_local(symtab, "__glink_PLTresolve", | |
3876 | this->glink_, value, stub_size); | |
3877 | ||
3878 | if (size != 64) | |
3879 | this->define_local(symtab, "__glink", this->glink_, 0, 0); | |
3880 | } | |
3881 | } | |
3882 | ||
ec661b9d AM |
3883 | return again; |
3884 | } | |
3885 | ||
9d5781f8 AM |
3886 | template<int size, bool big_endian> |
3887 | void | |
3888 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3889 | unsigned char* oview, | |
3890 | uint64_t* paddress, | |
3891 | off_t* plen) const | |
3892 | { | |
3893 | uint64_t address = plt->address(); | |
3894 | off_t len = plt->data_size(); | |
3895 | ||
3896 | if (plt == this->glink_) | |
3897 | { | |
3898 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3899 | if (len == 0) |
3900 | { | |
3901 | gold_assert(parameters->doing_static_link()); | |
3902 | // Static linking may need stubs, to support ifunc and long | |
3903 | // branches. We need to create an output section for | |
3904 | // .eh_frame early in the link process, to have a place to | |
3905 | // attach stub .eh_frame info. We also need to have | |
3906 | // registered a CIE that matches the stub CIE. Both of | |
3907 | // these requirements are satisfied by creating an FDE and | |
3908 | // CIE for .glink, even though static linking will leave | |
3909 | // .glink zero length. | |
3910 | // ??? Hopefully generating an FDE with a zero address range | |
3911 | // won't confuse anything that consumes .eh_frame info. | |
3912 | } | |
3913 | else if (size == 64) | |
9d5781f8 AM |
3914 | { |
3915 | // There is one word before __glink_PLTresolve | |
3916 | address += 8; | |
3917 | len -= 8; | |
3918 | } | |
3919 | else if (parameters->options().output_is_position_independent()) | |
3920 | { | |
3921 | // There are two FDEs for a position independent glink. | |
3922 | // The first covers the branch table, the second | |
3923 | // __glink_PLTresolve at the end of glink. | |
9e390558 | 3924 | off_t resolve_size = this->glink_->pltresolve_size(); |
5fe7ffdc | 3925 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3926 | len -= resolve_size; |
3927 | else | |
3928 | { | |
3929 | address += len - resolve_size; | |
3930 | len = resolve_size; | |
3931 | } | |
3932 | } | |
3933 | } | |
3934 | else | |
3935 | { | |
3936 | // Must be a stub table. | |
3937 | const Stub_table<size, big_endian>* stub_table | |
3938 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3939 | uint64_t stub_address = stub_table->stub_address(); | |
3940 | len -= stub_address - address; | |
3941 | address = stub_address; | |
3942 | } | |
3943 | ||
3944 | *paddress = address; | |
3945 | *plen = len; | |
3946 | } | |
3947 | ||
42cacb20 DE |
3948 | // A class to handle the PLT data. |
3949 | ||
3950 | template<int size, bool big_endian> | |
cf43a2fe | 3951 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3952 | { |
3953 | public: | |
3954 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3955 | size, big_endian> Reloc_section; | |
3956 | ||
e5d5f5ed AM |
3957 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3958 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3959 | const char* name) |
3960 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3961 | rel_(plt_rel), | |
3962 | targ_(targ), | |
e5d5f5ed AM |
3963 | name_(name) |
3964 | { } | |
42cacb20 DE |
3965 | |
3966 | // Add an entry to the PLT. | |
03e25981 | 3967 | void |
cf43a2fe | 3968 | add_entry(Symbol*); |
42cacb20 | 3969 | |
03e25981 | 3970 | void |
e5d5f5ed AM |
3971 | add_ifunc_entry(Symbol*); |
3972 | ||
2d7ad24e AM |
3973 | void |
3974 | add_local_entry(Sized_relobj_file<size, big_endian>*, unsigned int); | |
3975 | ||
03e25981 | 3976 | void |
e5d5f5ed AM |
3977 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3978 | ||
42cacb20 | 3979 | // Return the .rela.plt section data. |
e5d5f5ed | 3980 | Reloc_section* |
cf43a2fe AM |
3981 | rel_plt() const |
3982 | { | |
42cacb20 DE |
3983 | return this->rel_; |
3984 | } | |
3985 | ||
0e70b911 CC |
3986 | // Return the number of PLT entries. |
3987 | unsigned int | |
3988 | entry_count() const | |
d83ce4e3 | 3989 | { |
b3ccdeb5 AM |
3990 | if (this->current_data_size() == 0) |
3991 | return 0; | |
b4f7960d AM |
3992 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3993 | / this->plt_entry_size()); | |
d83ce4e3 | 3994 | } |
0e70b911 | 3995 | |
42cacb20 | 3996 | protected: |
42cacb20 | 3997 | void |
cf43a2fe | 3998 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3999 | { |
cf43a2fe | 4000 | os->set_entsize(0); |
42cacb20 DE |
4001 | } |
4002 | ||
6ce78956 AM |
4003 | // Write to a map file. |
4004 | void | |
4005 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 4006 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 4007 | |
cf43a2fe | 4008 | private: |
b4f7960d AM |
4009 | // Return the offset of the first non-reserved PLT entry. |
4010 | unsigned int | |
4011 | first_plt_entry_offset() const | |
4012 | { | |
2d7ad24e AM |
4013 | // IPLT and LPLT have no reserved entry. |
4014 | if (this->name_[3] == 'I' || this->name_[3] == 'L') | |
b4f7960d AM |
4015 | return 0; |
4016 | return this->targ_->first_plt_entry_offset(); | |
4017 | } | |
4018 | ||
4019 | // Return the size of each PLT entry. | |
4020 | unsigned int | |
4021 | plt_entry_size() const | |
4022 | { | |
4023 | return this->targ_->plt_entry_size(); | |
4024 | } | |
cf43a2fe | 4025 | |
42cacb20 DE |
4026 | // Write out the PLT data. |
4027 | void | |
4028 | do_write(Output_file*); | |
4029 | ||
4030 | // The reloc section. | |
4031 | Reloc_section* rel_; | |
cf43a2fe AM |
4032 | // Allows access to .glink for do_write. |
4033 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
4034 | // What to report in map file. |
4035 | const char *name_; | |
42cacb20 DE |
4036 | }; |
4037 | ||
e5d5f5ed | 4038 | // Add an entry to the PLT. |
42cacb20 DE |
4039 | |
4040 | template<int size, bool big_endian> | |
03e25981 | 4041 | void |
e5d5f5ed | 4042 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 4043 | { |
e5d5f5ed AM |
4044 | if (!gsym->has_plt_offset()) |
4045 | { | |
ec661b9d | 4046 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4047 | if (off == 0) |
4048 | off += this->first_plt_entry_offset(); | |
4049 | gsym->set_plt_offset(off); | |
4050 | gsym->set_needs_dynsym_entry(); | |
4051 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4052 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 4053 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4054 | this->set_current_data_size(off); |
4055 | } | |
42cacb20 DE |
4056 | } |
4057 | ||
e5d5f5ed | 4058 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
4059 | |
4060 | template<int size, bool big_endian> | |
03e25981 | 4061 | void |
e5d5f5ed | 4062 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 4063 | { |
cf43a2fe AM |
4064 | if (!gsym->has_plt_offset()) |
4065 | { | |
ec661b9d | 4066 | section_size_type off = this->current_data_size(); |
cf43a2fe | 4067 | gsym->set_plt_offset(off); |
e5d5f5ed | 4068 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 4069 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4070 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4071 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 4072 | off += this->plt_entry_size(); |
e5d5f5ed AM |
4073 | this->set_current_data_size(off); |
4074 | } | |
4075 | } | |
4076 | ||
2d7ad24e AM |
4077 | // Add an entry for a local symbol to the PLT. |
4078 | ||
4079 | template<int size, bool big_endian> | |
4080 | void | |
4081 | Output_data_plt_powerpc<size, big_endian>::add_local_entry( | |
4082 | Sized_relobj_file<size, big_endian>* relobj, | |
4083 | unsigned int local_sym_index) | |
4084 | { | |
4085 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4086 | { | |
4087 | section_size_type off = this->current_data_size(); | |
4088 | relobj->set_local_plt_offset(local_sym_index, off); | |
4089 | if (this->rel_) | |
4090 | { | |
4091 | unsigned int dynrel = elfcpp::R_POWERPC_RELATIVE; | |
4092 | if (size == 64 && this->targ_->abiversion() < 2) | |
4093 | dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
4094 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, | |
4095 | dynrel, this, off, 0); | |
4096 | } | |
4097 | off += this->plt_entry_size(); | |
4098 | this->set_current_data_size(off); | |
4099 | } | |
4100 | } | |
4101 | ||
e5d5f5ed AM |
4102 | // Add an entry for a local ifunc symbol to the IPLT. |
4103 | ||
4104 | template<int size, bool big_endian> | |
03e25981 | 4105 | void |
e5d5f5ed AM |
4106 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
4107 | Sized_relobj_file<size, big_endian>* relobj, | |
4108 | unsigned int local_sym_index) | |
4109 | { | |
4110 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
4111 | { | |
ec661b9d | 4112 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
4113 | relobj->set_local_plt_offset(local_sym_index, off); |
4114 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 4115 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
4116 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
4117 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
4118 | this, off, 0); | |
b4f7960d | 4119 | off += this->plt_entry_size(); |
cf43a2fe AM |
4120 | this->set_current_data_size(off); |
4121 | } | |
42cacb20 DE |
4122 | } |
4123 | ||
dd93cd0a | 4124 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 4125 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 4126 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
4127 | static const uint32_t add_3_3_2 = 0x7c631214; |
4128 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
34e0882b AM |
4129 | static const uint32_t add_3_12_2 = 0x7c6c1214; |
4130 | static const uint32_t add_3_12_13 = 0x7c6c6a14; | |
dd93cd0a | 4131 | static const uint32_t add_11_0_11 = 0x7d605a14; |
b4f7960d AM |
4132 | static const uint32_t add_11_2_11 = 0x7d625a14; |
4133 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
32f59844 | 4134 | static const uint32_t add_12_11_12 = 0x7d8b6214; |
b4f7960d | 4135 | static const uint32_t addi_0_12 = 0x380c0000; |
dd93cd0a | 4136 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 4137 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 4138 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 4139 | static const uint32_t addi_12_1 = 0x39810000; |
32f59844 | 4140 | static const uint32_t addi_12_11 = 0x398b0000; |
b4f7960d | 4141 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
4142 | static const uint32_t addis_0_2 = 0x3c020000; |
4143 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 4144 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 4145 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
4146 | static const uint32_t addis_11_11 = 0x3d6b0000; |
4147 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 4148 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 4149 | static const uint32_t addis_12_2 = 0x3d820000; |
32f59844 | 4150 | static const uint32_t addis_12_11 = 0x3d8b0000; |
c9269dff | 4151 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
4152 | static const uint32_t b = 0x48000000; |
4153 | static const uint32_t bcl_20_31 = 0x429f0005; | |
4154 | static const uint32_t bctr = 0x4e800420; | |
34e0882b AM |
4155 | static const uint32_t bctrl = 0x4e800421; |
4156 | static const uint32_t beqlr = 0x4d820020; | |
f3a0ed29 | 4157 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 4158 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 4159 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 4160 | static const uint32_t cmpldi_2_0 = 0x28220000; |
34e0882b AM |
4161 | static const uint32_t cmpdi_11_0 = 0x2c2b0000; |
4162 | static const uint32_t cmpwi_11_0 = 0x2c0b0000; | |
dd93cd0a AM |
4163 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
4164 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
4165 | static const uint32_t ld_0_1 = 0xe8010000; |
4166 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 4167 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 4168 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 4169 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 4170 | static const uint32_t ld_2_12 = 0xe84c0000; |
34e0882b | 4171 | static const uint32_t ld_11_1 = 0xe9610000; |
b4f7960d | 4172 | static const uint32_t ld_11_2 = 0xe9620000; |
34e0882b | 4173 | static const uint32_t ld_11_3 = 0xe9630000; |
b4f7960d AM |
4174 | static const uint32_t ld_11_11 = 0xe96b0000; |
4175 | static const uint32_t ld_12_2 = 0xe9820000; | |
34e0882b | 4176 | static const uint32_t ld_12_3 = 0xe9830000; |
b4f7960d | 4177 | static const uint32_t ld_12_11 = 0xe98b0000; |
9055360d | 4178 | static const uint32_t ld_12_12 = 0xe98c0000; |
32f59844 | 4179 | static const uint32_t ldx_12_11_12 = 0x7d8b602a; |
f3a0ed29 | 4180 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 4181 | static const uint32_t li_0_0 = 0x38000000; |
e4dff765 | 4182 | static const uint32_t li_11_0 = 0x39600000; |
f3a0ed29 | 4183 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 4184 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 4185 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
4186 | static const uint32_t lis_11 = 0x3d600000; |
4187 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 4188 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff | 4189 | static const uint32_t lwz_0_12 = 0x800c0000; |
34e0882b | 4190 | static const uint32_t lwz_11_3 = 0x81630000; |
c9269dff AM |
4191 | static const uint32_t lwz_11_11 = 0x816b0000; |
4192 | static const uint32_t lwz_11_30 = 0x817e0000; | |
34e0882b | 4193 | static const uint32_t lwz_12_3 = 0x81830000; |
c9269dff | 4194 | static const uint32_t lwz_12_12 = 0x818c0000; |
dd93cd0a | 4195 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 4196 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 4197 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff | 4198 | static const uint32_t mflr_12 = 0x7d8802a6; |
34e0882b AM |
4199 | static const uint32_t mr_0_3 = 0x7c601b78; |
4200 | static const uint32_t mr_3_0 = 0x7c030378; | |
c9269dff AM |
4201 | static const uint32_t mtctr_0 = 0x7c0903a6; |
4202 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 4203 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 4204 | static const uint32_t mtlr_0 = 0x7c0803a6; |
34e0882b | 4205 | static const uint32_t mtlr_11 = 0x7d6803a6; |
c9269dff | 4206 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 4207 | static const uint32_t nop = 0x60000000; |
c9269dff | 4208 | static const uint32_t ori_0_0_0 = 0x60000000; |
e4dff765 | 4209 | static const uint32_t ori_11_11_0 = 0x616b0000; |
32f59844 AM |
4210 | static const uint32_t ori_12_12_0 = 0x618c0000; |
4211 | static const uint32_t oris_12_12_0 = 0x658c0000; | |
e4dff765 | 4212 | static const uint32_t sldi_11_11_34 = 0x796b1746; |
32f59844 | 4213 | static const uint32_t sldi_12_12_32 = 0x799c07c6; |
b4f7960d | 4214 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
4215 | static const uint32_t std_0_1 = 0xf8010000; |
4216 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 4217 | static const uint32_t std_2_1 = 0xf8410000; |
34e0882b | 4218 | static const uint32_t std_11_1 = 0xf9610000; |
f3a0ed29 AM |
4219 | static const uint32_t stfd_0_1 = 0xd8010000; |
4220 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 4221 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
4222 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
4223 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
4224 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 | 4225 | |
e4dff765 AM |
4226 | static const uint64_t paddi_12_pc = 0x0610000039800000ULL; |
4227 | static const uint64_t pld_12_pc = 0x04100000e5800000ULL; | |
4228 | static const uint64_t pnop = 0x0700000000000000ULL; | |
4229 | ||
42cacb20 DE |
4230 | // Write out the PLT. |
4231 | ||
4232 | template<int size, bool big_endian> | |
4233 | void | |
4234 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4235 | { | |
2d7ad24e | 4236 | if (size == 32 && (this->name_[3] != 'I' && this->name_[3] != 'L')) |
cf43a2fe | 4237 | { |
ec661b9d | 4238 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
4239 | const section_size_type oview_size |
4240 | = convert_to_section_size_type(this->data_size()); | |
4241 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4242 | unsigned char* pov = oview; | |
4243 | unsigned char* endpov = oview + oview_size; | |
4244 | ||
e5d5f5ed | 4245 | // The address of the .glink branch table |
cf43a2fe AM |
4246 | const Output_data_glink<size, big_endian>* glink |
4247 | = this->targ_->glink_section(); | |
ec661b9d | 4248 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
4249 | |
4250 | while (pov < endpov) | |
4251 | { | |
4252 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
4253 | pov += 4; | |
4254 | branch_tab += 4; | |
4255 | } | |
4256 | ||
4257 | of->write_output_view(offset, oview_size, oview); | |
4258 | } | |
4259 | } | |
4260 | ||
4261 | // Create the PLT section. | |
4262 | ||
4263 | template<int size, bool big_endian> | |
4264 | void | |
40b469d7 AM |
4265 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
4266 | Layout* layout) | |
cf43a2fe AM |
4267 | { |
4268 | if (this->plt_ == NULL) | |
4269 | { | |
40b469d7 AM |
4270 | if (this->got_ == NULL) |
4271 | this->got_section(symtab, layout); | |
4272 | ||
cf43a2fe AM |
4273 | if (this->glink_ == NULL) |
4274 | make_glink_section(layout); | |
4275 | ||
4276 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
4277 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 4278 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
4279 | this->rela_dyn_section(layout); |
4280 | ||
e5d5f5ed AM |
4281 | Reloc_section* plt_rel = new Reloc_section(false); |
4282 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
4283 | elfcpp::SHF_ALLOC, plt_rel, | |
4284 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
4285 | this->plt_ | |
4286 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 4287 | "** PLT"); |
cf43a2fe AM |
4288 | layout->add_output_section_data(".plt", |
4289 | (size == 32 | |
4290 | ? elfcpp::SHT_PROGBITS | |
4291 | : elfcpp::SHT_NOBITS), | |
4292 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4293 | this->plt_, | |
4294 | (size == 32 | |
4295 | ? ORDER_SMALL_DATA | |
4296 | : ORDER_SMALL_BSS), | |
4297 | false); | |
3254d32c AM |
4298 | |
4299 | Output_section* rela_plt_os = plt_rel->output_section(); | |
4300 | rela_plt_os->set_info_section(this->plt_->output_section()); | |
cf43a2fe AM |
4301 | } |
4302 | } | |
4303 | ||
e5d5f5ed AM |
4304 | // Create the IPLT section. |
4305 | ||
4306 | template<int size, bool big_endian> | |
4307 | void | |
40b469d7 AM |
4308 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
4309 | Layout* layout) | |
e5d5f5ed AM |
4310 | { |
4311 | if (this->iplt_ == NULL) | |
4312 | { | |
40b469d7 | 4313 | this->make_plt_section(symtab, layout); |
2d7ad24e | 4314 | this->make_lplt_section(layout); |
e5d5f5ed AM |
4315 | |
4316 | Reloc_section* iplt_rel = new Reloc_section(false); | |
6528b6eb AM |
4317 | if (this->rela_dyn_->output_section()) |
4318 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
e5d5f5ed AM |
4319 | this->iplt_ |
4320 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 4321 | "** IPLT"); |
6528b6eb AM |
4322 | if (this->plt_->output_section()) |
4323 | this->plt_->output_section()->add_output_section_data(this->iplt_); | |
e5d5f5ed AM |
4324 | } |
4325 | } | |
4326 | ||
2d7ad24e AM |
4327 | // Create the LPLT section. |
4328 | ||
4329 | template<int size, bool big_endian> | |
4330 | void | |
4331 | Target_powerpc<size, big_endian>::make_lplt_section(Layout* layout) | |
4332 | { | |
4333 | if (this->lplt_ == NULL) | |
4334 | { | |
4335 | Reloc_section* lplt_rel = NULL; | |
4336 | if (parameters->options().output_is_position_independent()) | |
4337 | { | |
4338 | lplt_rel = new Reloc_section(false); | |
4339 | this->rela_dyn_section(layout); | |
4340 | if (this->rela_dyn_->output_section()) | |
4341 | this->rela_dyn_->output_section() | |
4342 | ->add_output_section_data(lplt_rel); | |
4343 | } | |
4344 | this->lplt_ | |
4345 | = new Output_data_plt_powerpc<size, big_endian>(this, lplt_rel, | |
4346 | "** LPLT"); | |
4347 | this->make_brlt_section(layout); | |
4348 | if (this->brlt_section_ && this->brlt_section_->output_section()) | |
4349 | this->brlt_section_->output_section() | |
4350 | ->add_output_section_data(this->lplt_); | |
4351 | else | |
4352 | layout->add_output_section_data(".branch_lt", | |
4353 | elfcpp::SHT_PROGBITS, | |
4354 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
4355 | this->lplt_, | |
4356 | ORDER_RELRO, | |
4357 | true); | |
4358 | } | |
4359 | } | |
4360 | ||
ec661b9d | 4361 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
4362 | |
4363 | template<int size, bool big_endian> | |
ec661b9d | 4364 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
4365 | { |
4366 | public: | |
ec661b9d AM |
4367 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4368 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
4369 | size, big_endian> Reloc_section; | |
c9269dff | 4370 | |
ec661b9d AM |
4371 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
4372 | Reloc_section* brlt_rel) | |
4373 | : Output_section_data_build(size == 32 ? 4 : 8), | |
4374 | rel_(brlt_rel), | |
4375 | targ_(targ) | |
4376 | { } | |
cf43a2fe | 4377 | |
06f30c9d CC |
4378 | void |
4379 | reset_brlt_sizes() | |
4380 | { | |
4381 | this->reset_data_size(); | |
4382 | this->rel_->reset_data_size(); | |
4383 | } | |
4384 | ||
4385 | void | |
4386 | finalize_brlt_sizes() | |
4387 | { | |
4388 | this->finalize_data_size(); | |
4389 | this->rel_->finalize_data_size(); | |
4390 | } | |
4391 | ||
ec661b9d | 4392 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 4393 | void |
ec661b9d AM |
4394 | add_reloc(Address to, unsigned int off) |
4395 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 4396 | |
ec661b9d | 4397 | // Update section and reloc section size. |
e5d5f5ed | 4398 | void |
ec661b9d AM |
4399 | set_current_size(unsigned int num_branches) |
4400 | { | |
4401 | this->reset_address_and_file_offset(); | |
4402 | this->set_current_data_size(num_branches * 16); | |
4403 | this->finalize_data_size(); | |
4404 | Output_section* os = this->output_section(); | |
4405 | os->set_section_offsets_need_adjustment(); | |
4406 | if (this->rel_ != NULL) | |
4407 | { | |
0e123f69 | 4408 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
4409 | this->rel_->reset_address_and_file_offset(); |
4410 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
4411 | this->rel_->finalize_data_size(); | |
4412 | Output_section* os = this->rel_->output_section(); | |
4413 | os->set_section_offsets_need_adjustment(); | |
4414 | } | |
4415 | } | |
cf43a2fe | 4416 | |
ec661b9d AM |
4417 | protected: |
4418 | void | |
4419 | do_adjust_output_section(Output_section* os) | |
4420 | { | |
4421 | os->set_entsize(0); | |
4422 | } | |
e5d5f5ed | 4423 | |
ec661b9d AM |
4424 | // Write to a map file. |
4425 | void | |
4426 | do_print_to_mapfile(Mapfile* mapfile) const | |
4427 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 4428 | |
ec661b9d AM |
4429 | private: |
4430 | // Write out the BRLT data. | |
4431 | void | |
4432 | do_write(Output_file*); | |
c9824451 | 4433 | |
ec661b9d AM |
4434 | // The reloc section. |
4435 | Reloc_section* rel_; | |
4436 | Target_powerpc<size, big_endian>* targ_; | |
4437 | }; | |
cf43a2fe | 4438 | |
ec661b9d AM |
4439 | // Make the branch lookup table section. |
4440 | ||
4441 | template<int size, bool big_endian> | |
4442 | void | |
4443 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
4444 | { | |
4445 | if (size == 64 && this->brlt_section_ == NULL) | |
4446 | { | |
4447 | Reloc_section* brlt_rel = NULL; | |
4448 | bool is_pic = parameters->options().output_is_position_independent(); | |
4449 | if (is_pic) | |
4450 | { | |
54483898 AM |
4451 | // When PIC we can't fill in .branch_lt but must initialise at |
4452 | // runtime via dynamic relocations. | |
ec661b9d AM |
4453 | this->rela_dyn_section(layout); |
4454 | brlt_rel = new Reloc_section(false); | |
6528b6eb AM |
4455 | if (this->rela_dyn_->output_section()) |
4456 | this->rela_dyn_->output_section() | |
4457 | ->add_output_section_data(brlt_rel); | |
ec661b9d AM |
4458 | } |
4459 | this->brlt_section_ | |
4460 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
6528b6eb | 4461 | if (this->plt_ && is_pic && this->plt_->output_section()) |
ec661b9d AM |
4462 | this->plt_->output_section() |
4463 | ->add_output_section_data(this->brlt_section_); | |
4464 | else | |
6830ee24 | 4465 | layout->add_output_section_data(".branch_lt", |
54483898 | 4466 | elfcpp::SHT_PROGBITS, |
ec661b9d AM |
4467 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, |
4468 | this->brlt_section_, | |
54483898 AM |
4469 | ORDER_RELRO, |
4470 | true); | |
ec661b9d AM |
4471 | } |
4472 | } | |
4473 | ||
6830ee24 | 4474 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
4475 | |
4476 | template<int size, bool big_endian> | |
4477 | void | |
4478 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
4479 | { | |
4480 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
4481 | { | |
4482 | const section_size_type offset = this->offset(); | |
4483 | const section_size_type oview_size | |
4484 | = convert_to_section_size_type(this->data_size()); | |
4485 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
4486 | ||
4487 | this->targ_->write_branch_lookup_table(oview); | |
4488 | of->write_output_view(offset, oview_size, oview); | |
4489 | } | |
4490 | } | |
4491 | ||
9e69ed50 AM |
4492 | static inline uint32_t |
4493 | l(uint32_t a) | |
4494 | { | |
4495 | return a & 0xffff; | |
4496 | } | |
4497 | ||
4498 | static inline uint32_t | |
4499 | hi(uint32_t a) | |
4500 | { | |
4501 | return l(a >> 16); | |
4502 | } | |
4503 | ||
4504 | static inline uint32_t | |
4505 | ha(uint32_t a) | |
4506 | { | |
4507 | return hi(a + 0x8000); | |
4508 | } | |
4509 | ||
e4dff765 AM |
4510 | static inline uint64_t |
4511 | d34(uint64_t v) | |
4512 | { | |
4513 | return ((v & 0x3ffff0000ULL) << 16) | (v & 0xffff); | |
4514 | } | |
4515 | ||
4516 | static inline uint64_t | |
4517 | ha34(uint64_t v) | |
4518 | { | |
4519 | return (v + (1ULL << 33)) >> 34; | |
4520 | } | |
4521 | ||
9d5781f8 AM |
4522 | template<int size> |
4523 | struct Eh_cie | |
4524 | { | |
4525 | static const unsigned char eh_frame_cie[12]; | |
4526 | }; | |
4527 | ||
4528 | template<int size> | |
4529 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
4530 | { | |
4531 | 1, // CIE version. | |
4532 | 'z', 'R', 0, // Augmentation string. | |
4533 | 4, // Code alignment. | |
4534 | 0x80 - size / 8 , // Data alignment. | |
4535 | 65, // RA reg. | |
4536 | 1, // Augmentation size. | |
4537 | (elfcpp::DW_EH_PE_pcrel | |
4538 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
4539 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
4540 | }; | |
4541 | ||
b4f7960d AM |
4542 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
4543 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
4544 | { |
4545 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4546 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4547 | 0, // Augmentation size. | |
4548 | elfcpp::DW_CFA_advance_loc + 1, | |
4549 | elfcpp::DW_CFA_register, 65, 12, | |
15a3a14f | 4550 | elfcpp::DW_CFA_advance_loc + 5, |
9d5781f8 AM |
4551 | elfcpp::DW_CFA_restore_extended, 65 |
4552 | }; | |
4553 | ||
b4f7960d AM |
4554 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
4555 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
4556 | { | |
4557 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4558 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4559 | 0, // Augmentation size. | |
4560 | elfcpp::DW_CFA_advance_loc + 1, | |
4561 | elfcpp::DW_CFA_register, 65, 0, | |
15a3a14f | 4562 | elfcpp::DW_CFA_advance_loc + 7, |
b4f7960d AM |
4563 | elfcpp::DW_CFA_restore_extended, 65 |
4564 | }; | |
4565 | ||
9d5781f8 AM |
4566 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
4567 | static const unsigned char glink_eh_frame_fde_32[] = | |
4568 | { | |
4569 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
4570 | 0, 0, 0, 0, // Replaced with size of .glink. | |
4571 | 0, // Augmentation size. | |
4572 | elfcpp::DW_CFA_advance_loc + 2, | |
4573 | elfcpp::DW_CFA_register, 65, 0, | |
4574 | elfcpp::DW_CFA_advance_loc + 4, | |
4575 | elfcpp::DW_CFA_restore_extended, 65 | |
4576 | }; | |
4577 | ||
4578 | static const unsigned char default_fde[] = | |
4579 | { | |
4580 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
4581 | 0, 0, 0, 0, // Replaced with size of stubs. | |
4582 | 0, // Augmentation size. | |
4583 | elfcpp::DW_CFA_nop, // Pad. | |
4584 | elfcpp::DW_CFA_nop, | |
4585 | elfcpp::DW_CFA_nop | |
4586 | }; | |
4587 | ||
9e69ed50 AM |
4588 | template<bool big_endian> |
4589 | static inline void | |
4590 | write_insn(unsigned char* p, uint32_t v) | |
4591 | { | |
4592 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
4593 | } | |
4594 | ||
691d2e9a AM |
4595 | template<int size> |
4596 | static inline unsigned int | |
4597 | param_plt_align() | |
4598 | { | |
4599 | if (!parameters->options().user_set_plt_align()) | |
4600 | return size == 64 ? 32 : 8; | |
4601 | return 1 << parameters->options().plt_align(); | |
4602 | } | |
4603 | ||
ec661b9d AM |
4604 | // Stub_table holds information about plt and long branch stubs. |
4605 | // Stubs are built in an area following some input section determined | |
4606 | // by group_sections(). This input section is converted to a relaxed | |
4607 | // input section allowing it to be resized to accommodate the stubs | |
4608 | ||
4609 | template<int size, bool big_endian> | |
4610 | class Stub_table : public Output_relaxed_input_section | |
4611 | { | |
4612 | public: | |
7e57d19e AM |
4613 | struct Plt_stub_ent |
4614 | { | |
4615 | Plt_stub_ent(unsigned int off, unsigned int indx) | |
32f59844 | 4616 | : off_(off), indx_(indx), iter_(0), notoc_(0), r2save_(0), localentry0_(0) |
7e57d19e AM |
4617 | { } |
4618 | ||
4619 | unsigned int off_; | |
32f59844 AM |
4620 | unsigned int indx_ : 28; |
4621 | unsigned int iter_ : 1; | |
4622 | unsigned int notoc_ : 1; | |
7e57d19e | 4623 | unsigned int r2save_ : 1; |
7ee7ff70 | 4624 | unsigned int localentry0_ : 1; |
7e57d19e | 4625 | }; |
32f59844 AM |
4626 | struct Branch_stub_ent |
4627 | { | |
4628 | Branch_stub_ent(unsigned int off, bool notoc, bool save_res) | |
4629 | : off_(off), iter_(false), notoc_(notoc), save_res_(save_res) | |
4630 | { } | |
4631 | ||
4632 | unsigned int off_; | |
4633 | bool iter_; | |
4634 | bool notoc_; | |
4635 | bool save_res_; | |
4636 | }; | |
ec661b9d AM |
4637 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4638 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
4639 | ||
a3e60ddb AM |
4640 | Stub_table(Target_powerpc<size, big_endian>* targ, |
4641 | Output_section* output_section, | |
590b87ff AM |
4642 | const Output_section::Input_section* owner, |
4643 | uint32_t id) | |
a3e60ddb AM |
4644 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), |
4645 | owner->relobj() | |
4646 | ->section_addralign(owner->shndx())), | |
ec661b9d | 4647 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
4648 | orig_data_size_(owner->current_data_size()), |
4649 | plt_size_(0), last_plt_size_(0), | |
6395d38b | 4650 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
32f59844 | 4651 | need_save_res_(false), need_resize_(false), resizing_(false), |
220f9906 | 4652 | uniq_(id) |
a3e60ddb AM |
4653 | { |
4654 | this->set_output_section(output_section); | |
ec661b9d | 4655 | |
a3e60ddb AM |
4656 | std::vector<Output_relaxed_input_section*> new_relaxed; |
4657 | new_relaxed.push_back(this); | |
4658 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
4659 | } | |
ec661b9d AM |
4660 | |
4661 | // Add a plt call stub. | |
a3e60ddb AM |
4662 | bool |
4663 | add_plt_call_entry(Address, | |
4664 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4665 | const Symbol*, |
4666 | unsigned int, | |
7e57d19e AM |
4667 | Address, |
4668 | bool); | |
ec661b9d | 4669 | |
a3e60ddb AM |
4670 | bool |
4671 | add_plt_call_entry(Address, | |
4672 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
4673 | unsigned int, |
4674 | unsigned int, | |
7e57d19e AM |
4675 | Address, |
4676 | bool); | |
ec661b9d AM |
4677 | |
4678 | // Find a given plt call stub. | |
7e57d19e | 4679 | const Plt_stub_ent* |
ec661b9d AM |
4680 | find_plt_call_entry(const Symbol*) const; |
4681 | ||
7e57d19e | 4682 | const Plt_stub_ent* |
ec661b9d AM |
4683 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4684 | unsigned int) const; | |
4685 | ||
7e57d19e | 4686 | const Plt_stub_ent* |
ec661b9d AM |
4687 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4688 | const Symbol*, | |
4689 | unsigned int, | |
4690 | Address) const; | |
4691 | ||
7e57d19e | 4692 | const Plt_stub_ent* |
ec661b9d AM |
4693 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, |
4694 | unsigned int, | |
4695 | unsigned int, | |
4696 | Address) const; | |
4697 | ||
4698 | // Add a long branch stub. | |
a3e60ddb AM |
4699 | bool |
4700 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 4701 | unsigned int, Address, Address, bool); |
ec661b9d | 4702 | |
32f59844 | 4703 | const Branch_stub_ent* |
9d5781f8 AM |
4704 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
4705 | Address) const; | |
ec661b9d | 4706 | |
a3e60ddb AM |
4707 | bool |
4708 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
4709 | { | |
32f59844 | 4710 | Address max_branch_offset = max_branch_delta<size>(r_type); |
a3e60ddb AM |
4711 | if (max_branch_offset == 0) |
4712 | return true; | |
4713 | gold_assert(from != invalid_address); | |
4714 | Address loc = off + this->stub_address(); | |
4715 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
4716 | } | |
4717 | ||
ec661b9d | 4718 | void |
a3e60ddb | 4719 | clear_stubs(bool all) |
cf43a2fe | 4720 | { |
9e69ed50 AM |
4721 | this->plt_call_stubs_.clear(); |
4722 | this->plt_size_ = 0; | |
ec661b9d AM |
4723 | this->long_branch_stubs_.clear(); |
4724 | this->branch_size_ = 0; | |
d49044c7 | 4725 | this->need_save_res_ = false; |
a3e60ddb AM |
4726 | if (all) |
4727 | { | |
4728 | this->last_plt_size_ = 0; | |
4729 | this->last_branch_size_ = 0; | |
4730 | } | |
cf43a2fe AM |
4731 | } |
4732 | ||
32f59844 AM |
4733 | bool |
4734 | need_resize() const | |
4735 | { return need_resize_; } | |
4736 | ||
4737 | void | |
4738 | set_resizing(bool val) | |
4739 | { | |
4740 | this->resizing_ = val; | |
4741 | if (val) | |
4742 | { | |
4743 | this->need_resize_ = false; | |
4744 | this->plt_size_ = 0; | |
4745 | this->branch_size_ = 0; | |
4746 | this->need_save_res_ = false; | |
4747 | } | |
4748 | } | |
4749 | ||
ec661b9d AM |
4750 | Address |
4751 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 4752 | { |
ec661b9d AM |
4753 | Address start_off = off; |
4754 | off += this->orig_data_size_; | |
4755 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
4756 | if (this->need_save_res_) |
4757 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
4758 | if (my_size != 0) |
4759 | off = align_address(off, this->stub_align()); | |
4760 | // Include original section size and alignment padding in size | |
4761 | my_size += off - start_off; | |
6395d38b HS |
4762 | // Ensure new size is always larger than min size |
4763 | // threshold. Alignment requirement is included in "my_size", so | |
4764 | // increase "my_size" does not invalidate alignment. | |
4765 | if (my_size < this->min_size_threshold_) | |
4766 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
4767 | this->reset_address_and_file_offset(); |
4768 | this->set_current_data_size(my_size); | |
4769 | this->set_address_and_file_offset(os->address() + start_off, | |
4770 | os->offset() + start_off); | |
4771 | return my_size; | |
cf43a2fe AM |
4772 | } |
4773 | ||
ec661b9d | 4774 | Address |
9d5781f8 | 4775 | stub_address() const |
ec661b9d AM |
4776 | { |
4777 | return align_address(this->address() + this->orig_data_size_, | |
4778 | this->stub_align()); | |
4779 | } | |
4780 | ||
4781 | Address | |
9d5781f8 | 4782 | stub_offset() const |
ec661b9d AM |
4783 | { |
4784 | return align_address(this->offset() + this->orig_data_size_, | |
4785 | this->stub_align()); | |
4786 | } | |
4787 | ||
4788 | section_size_type | |
4789 | plt_size() const | |
4790 | { return this->plt_size_; } | |
4791 | ||
32f59844 AM |
4792 | section_size_type |
4793 | branch_size() const | |
4794 | { return this->branch_size_; } | |
4795 | ||
590b87ff AM |
4796 | void |
4797 | set_min_size_threshold(Address min_size) | |
6395d38b HS |
4798 | { this->min_size_threshold_ = min_size; } |
4799 | ||
590b87ff AM |
4800 | void |
4801 | define_stub_syms(Symbol_table*); | |
4802 | ||
ec661b9d AM |
4803 | bool |
4804 | size_update() | |
4805 | { | |
4806 | Output_section* os = this->output_section(); | |
4807 | if (os->addralign() < this->stub_align()) | |
4808 | { | |
4809 | os->set_addralign(this->stub_align()); | |
4810 | // FIXME: get rid of the insane checkpointing. | |
4811 | // We can't increase alignment of the input section to which | |
4812 | // stubs are attached; The input section may be .init which | |
4813 | // is pasted together with other .init sections to form a | |
4814 | // function. Aligning might insert zero padding resulting in | |
4815 | // sigill. However we do need to increase alignment of the | |
4816 | // output section so that the align_address() on offset in | |
4817 | // set_address_and_size() adds the same padding as the | |
4818 | // align_address() on address in stub_address(). | |
4819 | // What's more, we need this alignment for the layout done in | |
4820 | // relaxation_loop_body() so that the output section starts at | |
4821 | // a suitably aligned address. | |
4822 | os->checkpoint_set_addralign(this->stub_align()); | |
4823 | } | |
9e69ed50 AM |
4824 | if (this->last_plt_size_ != this->plt_size_ |
4825 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 4826 | { |
9e69ed50 AM |
4827 | this->last_plt_size_ = this->plt_size_; |
4828 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
4829 | return true; |
4830 | } | |
4831 | return false; | |
4832 | } | |
4833 | ||
34e0882b AM |
4834 | // Add .eh_frame info for this stub section. |
4835 | void | |
4836 | add_eh_frame(Layout* layout); | |
be897fb7 | 4837 | |
34e0882b | 4838 | // Remove .eh_frame info for this stub section. |
be897fb7 | 4839 | void |
34e0882b | 4840 | remove_eh_frame(Layout* layout); |
9d5781f8 | 4841 | |
ec661b9d AM |
4842 | Target_powerpc<size, big_endian>* |
4843 | targ() const | |
4844 | { return targ_; } | |
6ce78956 | 4845 | |
cf43a2fe | 4846 | private: |
bdab445c AM |
4847 | class Plt_stub_key; |
4848 | class Plt_stub_key_hash; | |
bdab445c AM |
4849 | typedef Unordered_map<Plt_stub_key, Plt_stub_ent, |
4850 | Plt_stub_key_hash> Plt_stub_entries; | |
32f59844 AM |
4851 | class Branch_stub_key; |
4852 | class Branch_stub_key_hash; | |
4853 | typedef Unordered_map<Branch_stub_key, Branch_stub_ent, | |
4854 | Branch_stub_key_hash> Branch_stub_entries; | |
9e69ed50 AM |
4855 | |
4856 | // Alignment of stub section. | |
ec661b9d | 4857 | unsigned int |
9e69ed50 AM |
4858 | stub_align() const |
4859 | { | |
691d2e9a | 4860 | unsigned int min_align = size == 64 ? 32 : 16; |
9e69ed50 AM |
4861 | unsigned int user_align = 1 << parameters->options().plt_align(); |
4862 | return std::max(user_align, min_align); | |
4863 | } | |
cf43a2fe | 4864 | |
91c2b899 AM |
4865 | // Return the plt offset for the given call stub. |
4866 | Address | |
08be3224 AM |
4867 | plt_off(typename Plt_stub_entries::const_iterator p, |
4868 | const Output_data_plt_powerpc<size, big_endian>** sec) const | |
91c2b899 AM |
4869 | { |
4870 | const Symbol* gsym = p->first.sym_; | |
4871 | if (gsym != NULL) | |
08be3224 | 4872 | return this->targ_->plt_off(gsym, sec); |
91c2b899 AM |
4873 | else |
4874 | { | |
91c2b899 AM |
4875 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; |
4876 | unsigned int local_sym_index = p->first.locsym_; | |
08be3224 | 4877 | return this->targ_->plt_off(relobj, local_sym_index, sec); |
91c2b899 AM |
4878 | } |
4879 | } | |
4880 | ||
9e69ed50 | 4881 | // Size of a given plt call stub. |
ec661b9d | 4882 | unsigned int |
32f59844 | 4883 | plt_call_size(typename Plt_stub_entries::const_iterator p) const; |
34e0882b AM |
4884 | |
4885 | unsigned int | |
4886 | plt_call_align(unsigned int bytes) const | |
4887 | { | |
691d2e9a | 4888 | unsigned int align = param_plt_align<size>(); |
9e390558 | 4889 | return (bytes + align - 1) & -align; |
9e69ed50 | 4890 | } |
ec661b9d AM |
4891 | |
4892 | // Return long branch stub size. | |
4893 | unsigned int | |
32f59844 AM |
4894 | branch_stub_size(typename Branch_stub_entries::const_iterator p, |
4895 | bool* need_lt); | |
4896 | ||
4897 | bool | |
4898 | build_tls_opt_head(unsigned char** pp, | |
4899 | typename Plt_stub_entries::const_iterator cs); | |
4900 | ||
4901 | bool | |
4902 | build_tls_opt_tail(unsigned char* p, | |
4903 | typename Plt_stub_entries::const_iterator cs); | |
ec661b9d | 4904 | |
f073a3e8 AM |
4905 | void |
4906 | plt_error(const Plt_stub_key& p); | |
4907 | ||
ec661b9d | 4908 | // Write out stubs. |
cf43a2fe AM |
4909 | void |
4910 | do_write(Output_file*); | |
4911 | ||
ec661b9d | 4912 | // Plt call stub keys. |
bdab445c | 4913 | class Plt_stub_key |
cf43a2fe | 4914 | { |
d1a8cabd | 4915 | public: |
bdab445c | 4916 | Plt_stub_key(const Symbol* sym) |
c9824451 AM |
4917 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
4918 | { } | |
4919 | ||
bdab445c | 4920 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d | 4921 | unsigned int locsym_index) |
c9824451 AM |
4922 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4923 | { } | |
4924 | ||
bdab445c | 4925 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4926 | const Symbol* sym, |
4927 | unsigned int r_type, | |
4928 | Address addend) | |
e5d5f5ed | 4929 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
4930 | { |
4931 | if (size != 32) | |
ec661b9d | 4932 | this->addend_ = addend; |
d1a8cabd | 4933 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
4934 | && (r_type == elfcpp::R_PPC_PLTREL24 |
4935 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
cf43a2fe | 4936 | { |
ec661b9d | 4937 | this->addend_ = addend; |
e5d5f5ed | 4938 | if (this->addend_ >= 32768) |
d1a8cabd | 4939 | this->object_ = object; |
cf43a2fe AM |
4940 | } |
4941 | } | |
4942 | ||
bdab445c | 4943 | Plt_stub_key(const Sized_relobj_file<size, big_endian>* object, |
ec661b9d AM |
4944 | unsigned int locsym_index, |
4945 | unsigned int r_type, | |
4946 | Address addend) | |
e5d5f5ed AM |
4947 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4948 | { | |
4949 | if (size != 32) | |
ec661b9d | 4950 | this->addend_ = addend; |
e5d5f5ed | 4951 | else if (parameters->options().output_is_position_independent() |
23cedd1d AM |
4952 | && (r_type == elfcpp::R_PPC_PLTREL24 |
4953 | || r_type == elfcpp::R_POWERPC_PLTCALL)) | |
ec661b9d | 4954 | this->addend_ = addend; |
e5d5f5ed AM |
4955 | } |
4956 | ||
bdab445c | 4957 | bool operator==(const Plt_stub_key& that) const |
cf43a2fe AM |
4958 | { |
4959 | return (this->sym_ == that.sym_ | |
4960 | && this->object_ == that.object_ | |
e5d5f5ed AM |
4961 | && this->addend_ == that.addend_ |
4962 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 4963 | } |
c9269dff AM |
4964 | |
4965 | const Symbol* sym_; | |
e5d5f5ed AM |
4966 | const Sized_relobj_file<size, big_endian>* object_; |
4967 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
4968 | unsigned int locsym_; | |
cf43a2fe AM |
4969 | }; |
4970 | ||
bdab445c | 4971 | class Plt_stub_key_hash |
cf43a2fe | 4972 | { |
d1a8cabd | 4973 | public: |
bdab445c | 4974 | size_t operator()(const Plt_stub_key& ent) const |
cf43a2fe AM |
4975 | { |
4976 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
4977 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
4978 | ^ ent.addend_ |
4979 | ^ ent.locsym_); | |
cf43a2fe | 4980 | } |
ec661b9d AM |
4981 | }; |
4982 | ||
4983 | // Long branch stub keys. | |
32f59844 | 4984 | class Branch_stub_key |
ec661b9d AM |
4985 | { |
4986 | public: | |
32f59844 AM |
4987 | Branch_stub_key(const Powerpc_relobj<size, big_endian>* obj, Address to) |
4988 | : dest_(to), toc_base_off_(0) | |
ec661b9d AM |
4989 | { |
4990 | if (size == 64) | |
4991 | toc_base_off_ = obj->toc_base_offset(); | |
4992 | } | |
4993 | ||
32f59844 | 4994 | bool operator==(const Branch_stub_key& that) const |
ec661b9d AM |
4995 | { |
4996 | return (this->dest_ == that.dest_ | |
4997 | && (size == 32 | |
4998 | || this->toc_base_off_ == that.toc_base_off_)); | |
4999 | } | |
cf43a2fe | 5000 | |
ec661b9d AM |
5001 | Address dest_; |
5002 | unsigned int toc_base_off_; | |
5003 | }; | |
cf43a2fe | 5004 | |
32f59844 | 5005 | class Branch_stub_key_hash |
ec661b9d AM |
5006 | { |
5007 | public: | |
32f59844 AM |
5008 | size_t operator()(const Branch_stub_key& key) const |
5009 | { return key.dest_ ^ key.toc_base_off_; } | |
ec661b9d | 5010 | }; |
cf43a2fe | 5011 | |
ec661b9d | 5012 | // In a sane world this would be a global. |
cf43a2fe | 5013 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 5014 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
5015 | Plt_stub_entries plt_call_stubs_; |
5016 | // Map destination address to stub offset. | |
ec661b9d AM |
5017 | Branch_stub_entries long_branch_stubs_; |
5018 | // size of input section | |
5019 | section_size_type orig_data_size_; | |
5020 | // size of stubs | |
9e69ed50 | 5021 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
5022 | // Some rare cases cause (PR/20529) fluctuation in stub table |
5023 | // size, which leads to an endless relax loop. This is to be fixed | |
5024 | // by, after the first few iterations, allowing only increase of | |
5025 | // stub table size. This variable sets the minimal possible size of | |
5026 | // a stub table, it is zero for the first few iterations, then | |
5027 | // increases monotonically. | |
5028 | Address min_size_threshold_; | |
d49044c7 AM |
5029 | // Set if this stub group needs a copy of out-of-line register |
5030 | // save/restore functions. | |
5031 | bool need_save_res_; | |
32f59844 AM |
5032 | // Set when notoc_/r2save_ changes after sizing a stub |
5033 | bool need_resize_; | |
5034 | // Set when resizing stubs | |
5035 | bool resizing_; | |
590b87ff AM |
5036 | // Per stub table unique identifier. |
5037 | uint32_t uniq_; | |
cf43a2fe AM |
5038 | }; |
5039 | ||
ec661b9d | 5040 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 5041 | // sym/object/addend combo. |
cf43a2fe AM |
5042 | |
5043 | template<int size, bool big_endian> | |
a3e60ddb | 5044 | bool |
ec661b9d | 5045 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5046 | Address from, |
c9824451 | 5047 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5048 | const Symbol* gsym, |
ec661b9d | 5049 | unsigned int r_type, |
7e57d19e AM |
5050 | Address addend, |
5051 | bool tocsave) | |
cf43a2fe | 5052 | { |
bdab445c AM |
5053 | Plt_stub_key key(object, gsym, r_type, addend); |
5054 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5055 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5056 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5057 | if (size == 64) |
7ee7ff70 | 5058 | { |
32f59844 | 5059 | if (p.second |
7ee7ff70 AM |
5060 | && this->targ_->is_elfv2_localentry0(gsym)) |
5061 | { | |
5062 | p.first->second.localentry0_ = 1; | |
5063 | this->targ_->set_has_localentry0(); | |
5064 | } | |
32f59844 AM |
5065 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5066 | { | |
e4dff765 AM |
5067 | if (!p.second && !p.first->second.notoc_ |
5068 | && !this->targ_->powerxx_stubs()) | |
32f59844 AM |
5069 | this->need_resize_ = true; |
5070 | p.first->second.notoc_ = 1; | |
5071 | } | |
5072 | else if (!tocsave && !p.first->second.localentry0_) | |
5073 | { | |
5074 | if (!p.second && !p.first->second.r2save_) | |
5075 | this->need_resize_ = true; | |
5076 | p.first->second.r2save_ = 1; | |
5077 | } | |
5078 | } | |
5079 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5080 | { | |
5081 | if (this->resizing_) | |
5082 | { | |
5083 | p.first->second.iter_ = 1; | |
5084 | p.first->second.off_ = this->plt_size_; | |
5085 | } | |
5086 | this->plt_size_ += this->plt_call_size(p.first); | |
34e0882b | 5087 | if (this->targ_->is_tls_get_addr_opt(gsym)) |
220f9906 | 5088 | this->targ_->set_has_tls_get_addr_opt(); |
34e0882b | 5089 | this->plt_size_ = this->plt_call_align(this->plt_size_); |
7ee7ff70 | 5090 | } |
32f59844 | 5091 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
cf43a2fe AM |
5092 | } |
5093 | ||
e5d5f5ed | 5094 | template<int size, bool big_endian> |
a3e60ddb | 5095 | bool |
ec661b9d | 5096 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 5097 | Address from, |
c9824451 | 5098 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5099 | unsigned int locsym_index, |
ec661b9d | 5100 | unsigned int r_type, |
7e57d19e AM |
5101 | Address addend, |
5102 | bool tocsave) | |
e5d5f5ed | 5103 | { |
bdab445c AM |
5104 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5105 | Plt_stub_ent ent(this->plt_size_, this->plt_call_stubs_.size()); | |
9e69ed50 | 5106 | std::pair<typename Plt_stub_entries::iterator, bool> p |
bdab445c | 5107 | = this->plt_call_stubs_.insert(std::make_pair(key, ent)); |
32f59844 | 5108 | if (size == 64) |
7ee7ff70 | 5109 | { |
32f59844 | 5110 | if (p.second |
7ee7ff70 AM |
5111 | && this->targ_->is_elfv2_localentry0(object, locsym_index)) |
5112 | { | |
5113 | p.first->second.localentry0_ = 1; | |
5114 | this->targ_->set_has_localentry0(); | |
5115 | } | |
32f59844 AM |
5116 | if (r_type == elfcpp::R_PPC64_REL24_NOTOC) |
5117 | { | |
e4dff765 AM |
5118 | if (!p.second && !p.first->second.notoc_ |
5119 | && !this->targ_->powerxx_stubs()) | |
32f59844 AM |
5120 | this->need_resize_ = true; |
5121 | p.first->second.notoc_ = 1; | |
5122 | } | |
5123 | else if (!tocsave && !p.first->second.localentry0_) | |
5124 | { | |
5125 | if (!p.second && !p.first->second.r2save_) | |
5126 | this->need_resize_ = true; | |
5127 | p.first->second.r2save_ = 1; | |
5128 | } | |
7ee7ff70 | 5129 | } |
32f59844 AM |
5130 | if (p.second || (this->resizing_ && !p.first->second.iter_)) |
5131 | { | |
5132 | if (this->resizing_) | |
5133 | { | |
5134 | p.first->second.iter_ = 1; | |
5135 | p.first->second.off_ = this->plt_size_; | |
5136 | } | |
5137 | this->plt_size_ += this->plt_call_size(p.first); | |
5138 | this->plt_size_ = this->plt_call_align(this->plt_size_); | |
5139 | } | |
5140 | return this->can_reach_stub(from, p.first->second.off_, r_type); | |
e5d5f5ed AM |
5141 | } |
5142 | ||
ec661b9d AM |
5143 | // Find a plt call stub. |
5144 | ||
cf43a2fe | 5145 | template<int size, bool big_endian> |
7e57d19e | 5146 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5147 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5148 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 5149 | const Symbol* gsym, |
ec661b9d AM |
5150 | unsigned int r_type, |
5151 | Address addend) const | |
c9824451 | 5152 | { |
bdab445c AM |
5153 | Plt_stub_key key(object, gsym, r_type, addend); |
5154 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5155 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5156 | return NULL; |
5157 | return &p->second; | |
c9824451 AM |
5158 | } |
5159 | ||
5160 | template<int size, bool big_endian> | |
7e57d19e | 5161 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5162 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 5163 | { |
bdab445c AM |
5164 | Plt_stub_key key(gsym); |
5165 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5166 | if (p == this->plt_call_stubs_.end()) |
5167 | return NULL; | |
5168 | return &p->second; | |
cf43a2fe AM |
5169 | } |
5170 | ||
e5d5f5ed | 5171 | template<int size, bool big_endian> |
7e57d19e | 5172 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5173 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 5174 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 5175 | unsigned int locsym_index, |
ec661b9d AM |
5176 | unsigned int r_type, |
5177 | Address addend) const | |
e5d5f5ed | 5178 | { |
bdab445c AM |
5179 | Plt_stub_key key(object, locsym_index, r_type, addend); |
5180 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
5181 | if (p == this->plt_call_stubs_.end()) | |
7e57d19e AM |
5182 | return NULL; |
5183 | return &p->second; | |
c9824451 AM |
5184 | } |
5185 | ||
5186 | template<int size, bool big_endian> | |
7e57d19e | 5187 | const typename Stub_table<size, big_endian>::Plt_stub_ent* |
ec661b9d | 5188 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
5189 | const Sized_relobj_file<size, big_endian>* object, |
5190 | unsigned int locsym_index) const | |
5191 | { | |
bdab445c AM |
5192 | Plt_stub_key key(object, locsym_index); |
5193 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(key); | |
7e57d19e AM |
5194 | if (p == this->plt_call_stubs_.end()) |
5195 | return NULL; | |
5196 | return &p->second; | |
ec661b9d AM |
5197 | } |
5198 | ||
5199 | // Add a long branch stub if we don't already have one to given | |
5200 | // destination. | |
5201 | ||
5202 | template<int size, bool big_endian> | |
a3e60ddb | 5203 | bool |
ec661b9d AM |
5204 | Stub_table<size, big_endian>::add_long_branch_entry( |
5205 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
5206 | unsigned int r_type, |
5207 | Address from, | |
d49044c7 AM |
5208 | Address to, |
5209 | bool save_res) | |
ec661b9d | 5210 | { |
32f59844 AM |
5211 | Branch_stub_key key(object, to); |
5212 | bool notoc = (size == 64 && r_type == elfcpp::R_PPC64_REL24_NOTOC); | |
5213 | Branch_stub_ent ent(this->branch_size_, notoc, save_res); | |
590b87ff | 5214 | std::pair<typename Branch_stub_entries::iterator, bool> p |
32f59844 AM |
5215 | = this->long_branch_stubs_.insert(std::make_pair(key, ent)); |
5216 | if (notoc && !p.first->second.notoc_) | |
ec661b9d | 5217 | { |
32f59844 AM |
5218 | this->need_resize_ = true; |
5219 | p.first->second.notoc_ = true; | |
5220 | } | |
5221 | gold_assert(save_res == p.first->second.save_res_); | |
5222 | if (p.second || (this->resizing_ && !p.first->second.iter_)) | |
5223 | { | |
5224 | if (this->resizing_) | |
5225 | { | |
5226 | p.first->second.iter_ = 1; | |
5227 | p.first->second.off_ = this->branch_size_; | |
5228 | } | |
d49044c7 AM |
5229 | if (save_res) |
5230 | this->need_save_res_ = true; | |
5231 | else | |
5232 | { | |
32f59844 AM |
5233 | bool need_lt = false; |
5234 | unsigned int stub_size = this->branch_stub_size(p.first, &need_lt); | |
5235 | this->branch_size_ += stub_size; | |
5236 | if (size == 64 && need_lt) | |
d49044c7 AM |
5237 | this->targ_->add_branch_lookup_table(to); |
5238 | } | |
ec661b9d | 5239 | } |
32f59844 | 5240 | return this->can_reach_stub(from, p.first->second.off_, r_type); |
ec661b9d AM |
5241 | } |
5242 | ||
d49044c7 | 5243 | // Find long branch stub offset. |
ec661b9d AM |
5244 | |
5245 | template<int size, bool big_endian> | |
32f59844 | 5246 | const typename Stub_table<size, big_endian>::Branch_stub_ent* |
ec661b9d AM |
5247 | Stub_table<size, big_endian>::find_long_branch_entry( |
5248 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 5249 | Address to) const |
ec661b9d | 5250 | { |
32f59844 | 5251 | Branch_stub_key key(object, to); |
ec661b9d | 5252 | typename Branch_stub_entries::const_iterator p |
32f59844 | 5253 | = this->long_branch_stubs_.find(key); |
d49044c7 | 5254 | if (p == this->long_branch_stubs_.end()) |
32f59844 AM |
5255 | return NULL; |
5256 | return &p->second; | |
e5d5f5ed AM |
5257 | } |
5258 | ||
220f9906 AM |
5259 | template<bool big_endian> |
5260 | static void | |
5261 | eh_advance (std::vector<unsigned char>& fde, unsigned int delta) | |
34e0882b | 5262 | { |
220f9906 AM |
5263 | delta /= 4; |
5264 | if (delta < 64) | |
5265 | fde.push_back(elfcpp::DW_CFA_advance_loc + delta); | |
5266 | else if (delta < 256) | |
34e0882b | 5267 | { |
220f9906 AM |
5268 | fde.push_back(elfcpp::DW_CFA_advance_loc1); |
5269 | fde.push_back(delta); | |
5270 | } | |
5271 | else if (delta < 65536) | |
5272 | { | |
5273 | fde.resize(fde.size() + 3); | |
5274 | unsigned char *p = &*fde.end() - 3; | |
5275 | *p++ = elfcpp::DW_CFA_advance_loc2; | |
5276 | elfcpp::Swap<16, big_endian>::writeval(p, delta); | |
5277 | } | |
5278 | else | |
5279 | { | |
5280 | fde.resize(fde.size() + 5); | |
5281 | unsigned char *p = &*fde.end() - 5; | |
5282 | *p++ = elfcpp::DW_CFA_advance_loc4; | |
5283 | elfcpp::Swap<32, big_endian>::writeval(p, delta); | |
34e0882b | 5284 | } |
220f9906 AM |
5285 | } |
5286 | ||
5287 | template<typename T> | |
5288 | static bool | |
5289 | stub_sort(T s1, T s2) | |
5290 | { | |
5291 | return s1->second.off_ < s2->second.off_; | |
34e0882b AM |
5292 | } |
5293 | ||
5294 | // Add .eh_frame info for this stub section. Unlike other linker | |
5295 | // generated .eh_frame this is added late in the link, because we | |
5296 | // only want the .eh_frame info if this particular stub section is | |
5297 | // non-empty. | |
5298 | ||
5299 | template<int size, bool big_endian> | |
5300 | void | |
5301 | Stub_table<size, big_endian>::add_eh_frame(Layout* layout) | |
5302 | { | |
220f9906 AM |
5303 | if (size != 64 |
5304 | || !parameters->options().ld_generated_unwind_info()) | |
34e0882b AM |
5305 | return; |
5306 | ||
5307 | // Since we add stub .eh_frame info late, it must be placed | |
5308 | // after all other linker generated .eh_frame info so that | |
5309 | // merge mapping need not be updated for input sections. | |
5310 | // There is no provision to use a different CIE to that used | |
5311 | // by .glink. | |
5312 | if (!this->targ_->has_glink()) | |
5313 | return; | |
5314 | ||
220f9906 AM |
5315 | typedef typename Plt_stub_entries::const_iterator plt_iter; |
5316 | std::vector<plt_iter> calls; | |
5317 | if (!this->plt_call_stubs_.empty()) | |
5318 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5319 | cs != this->plt_call_stubs_.end(); | |
5320 | ++cs) | |
5321 | if ((this->targ_->is_tls_get_addr_opt(cs->first.sym_) | |
5322 | && cs->second.r2save_ | |
5323 | && !cs->second.localentry0_) | |
e4dff765 AM |
5324 | || (cs->second.notoc_ |
5325 | && !this->targ_->powerxx_stubs())) | |
220f9906 AM |
5326 | calls.push_back(cs); |
5327 | if (calls.size() > 1) | |
5328 | std::stable_sort(calls.begin(), calls.end(), | |
5329 | stub_sort<plt_iter>); | |
5330 | ||
5331 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5332 | std::vector<branch_iter> branches; | |
e4dff765 AM |
5333 | if (!this->long_branch_stubs_.empty() |
5334 | && !this->targ_->powerxx_stubs()) | |
220f9906 AM |
5335 | for (branch_iter bs = this->long_branch_stubs_.begin(); |
5336 | bs != this->long_branch_stubs_.end(); | |
5337 | ++bs) | |
5338 | if (bs->second.notoc_) | |
5339 | branches.push_back(bs); | |
5340 | if (branches.size() > 1) | |
5341 | std::stable_sort(branches.begin(), branches.end(), | |
5342 | stub_sort<branch_iter>); | |
5343 | ||
5344 | if (calls.empty() && branches.empty()) | |
34e0882b AM |
5345 | return; |
5346 | ||
220f9906 AM |
5347 | unsigned int last_eh_loc = 0; |
5348 | // offset pcrel sdata4, size udata4, and augmentation size byte. | |
5349 | std::vector<unsigned char> fde(9, 0); | |
5350 | ||
5351 | for (unsigned int i = 0; i < calls.size(); i++) | |
5352 | { | |
5353 | plt_iter cs = calls[i]; | |
5354 | unsigned int off = cs->second.off_; | |
5355 | // The __tls_get_addr_opt call stub needs to describe where | |
5356 | // it saves LR, to support exceptions that might be thrown | |
5357 | // from __tls_get_addr, and to support asynchronous exceptions. | |
5358 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
5359 | { | |
5360 | off += 7 * 4; | |
5361 | if (cs->second.r2save_ | |
5362 | && !cs->second.localentry0_) | |
5363 | { | |
5364 | off += 2 * 4; | |
5365 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5366 | fde.resize(fde.size() + 6); | |
5367 | unsigned char* p = &*fde.end() - 6; | |
5368 | *p++ = elfcpp::DW_CFA_offset_extended_sf; | |
5369 | *p++ = 65; | |
5370 | *p++ = -(this->targ_->stk_linker() / 8) & 0x7f; | |
5371 | unsigned int delta = this->plt_call_size(cs) - 4 - 9 * 4; | |
5372 | *p++ = elfcpp::DW_CFA_advance_loc + delta / 4; | |
5373 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5374 | *p++ = 65; | |
5375 | last_eh_loc = off + delta; | |
5376 | continue; | |
5377 | } | |
5378 | } | |
5379 | // notoc stubs also should describe LR changes, to support | |
5380 | // asynchronous exceptions. | |
5381 | off += (cs->second.r2save_ ? 4 : 0) + 8; | |
5382 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5383 | fde.resize(fde.size() + 6); | |
5384 | unsigned char* p = &*fde.end() - 6; | |
5385 | *p++ = elfcpp::DW_CFA_register; | |
5386 | *p++ = 65; | |
5387 | *p++ = 12; | |
5388 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5389 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5390 | *p++ = 65; | |
5391 | last_eh_loc = off + 8; | |
5392 | } | |
5393 | ||
5394 | for (unsigned int i = 0; i < branches.size(); i++) | |
5395 | { | |
5396 | branch_iter bs = branches[i]; | |
5397 | unsigned int off = bs->second.off_ + 8; | |
5398 | eh_advance<big_endian>(fde, off - last_eh_loc); | |
5399 | fde.resize(fde.size() + 6); | |
5400 | unsigned char* p = &*fde.end() - 6; | |
5401 | *p++ = elfcpp::DW_CFA_register; | |
5402 | *p++ = 65; | |
5403 | *p++ = 12; | |
5404 | *p++ = elfcpp::DW_CFA_advance_loc + 8 / 4; | |
5405 | *p++ = elfcpp::DW_CFA_restore_extended; | |
5406 | *p++ = 65; | |
5407 | last_eh_loc = off + 8; | |
5408 | } | |
5409 | ||
34e0882b AM |
5410 | layout->add_eh_frame_for_plt(this, |
5411 | Eh_cie<size>::eh_frame_cie, | |
5412 | sizeof (Eh_cie<size>::eh_frame_cie), | |
220f9906 | 5413 | &*fde.begin(), fde.size()); |
34e0882b AM |
5414 | } |
5415 | ||
5416 | template<int size, bool big_endian> | |
5417 | void | |
5418 | Stub_table<size, big_endian>::remove_eh_frame(Layout* layout) | |
5419 | { | |
220f9906 AM |
5420 | if (size == 64 |
5421 | && parameters->options().ld_generated_unwind_info() | |
5422 | && this->targ_->has_glink()) | |
5423 | layout->remove_eh_frame_for_plt(this, | |
5424 | Eh_cie<size>::eh_frame_cie, | |
5425 | sizeof (Eh_cie<size>::eh_frame_cie)); | |
34e0882b AM |
5426 | } |
5427 | ||
ec661b9d AM |
5428 | // A class to handle .glink. |
5429 | ||
5430 | template<int size, bool big_endian> | |
5431 | class Output_data_glink : public Output_section_data | |
5432 | { | |
5433 | public: | |
9055360d AM |
5434 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
5435 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
5436 | |
5437 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
5438 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
5439 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
5440 | { } |
5441 | ||
9d5781f8 | 5442 | void |
9055360d | 5443 | add_eh_frame(Layout* layout); |
9d5781f8 | 5444 | |
9055360d AM |
5445 | void |
5446 | add_global_entry(const Symbol*); | |
5447 | ||
5448 | Address | |
5449 | find_global_entry(const Symbol*) const; | |
5450 | ||
9e390558 AM |
5451 | unsigned int |
5452 | global_entry_align(unsigned int off) const | |
5453 | { | |
691d2e9a | 5454 | unsigned int align = param_plt_align<size>(); |
9e390558 AM |
5455 | return (off + align - 1) & -align; |
5456 | } | |
5457 | ||
5458 | unsigned int | |
5459 | global_entry_off() const | |
5460 | { | |
5461 | return this->global_entry_align(this->end_branch_table_); | |
5462 | } | |
5463 | ||
9055360d AM |
5464 | Address |
5465 | global_entry_address() const | |
5466 | { | |
5467 | gold_assert(this->is_data_size_valid()); | |
9e390558 AM |
5468 | return this->address() + this->global_entry_off(); |
5469 | } | |
5470 | ||
5471 | int | |
5472 | pltresolve_size() const | |
5473 | { | |
5474 | if (size == 64) | |
5475 | return (8 | |
407aa07c | 5476 | + (this->targ_->abiversion() < 2 ? 11 * 4 : 14 * 4)); |
9e390558 | 5477 | return 16 * 4; |
9d5781f8 AM |
5478 | } |
5479 | ||
ec661b9d AM |
5480 | protected: |
5481 | // Write to a map file. | |
5482 | void | |
5483 | do_print_to_mapfile(Mapfile* mapfile) const | |
5484 | { mapfile->print_output_data(this, _("** glink")); } | |
5485 | ||
5486 | private: | |
5487 | void | |
5488 | set_final_data_size(); | |
5489 | ||
5490 | // Write out .glink | |
5491 | void | |
5492 | do_write(Output_file*); | |
5493 | ||
5494 | // Allows access to .got and .plt for do_write. | |
5495 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
5496 | |
5497 | // Map sym to stub offset. | |
5498 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
5499 | Global_entry_stub_entries global_entry_stubs_; | |
5500 | ||
5501 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
5502 | }; |
5503 | ||
9055360d AM |
5504 | template<int size, bool big_endian> |
5505 | void | |
5506 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
5507 | { | |
5508 | if (!parameters->options().ld_generated_unwind_info()) | |
5509 | return; | |
5510 | ||
5511 | if (size == 64) | |
5512 | { | |
5513 | if (this->targ_->abiversion() < 2) | |
5514 | layout->add_eh_frame_for_plt(this, | |
5515 | Eh_cie<64>::eh_frame_cie, | |
5516 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5517 | glink_eh_frame_fde_64v1, | |
5518 | sizeof (glink_eh_frame_fde_64v1)); | |
5519 | else | |
5520 | layout->add_eh_frame_for_plt(this, | |
5521 | Eh_cie<64>::eh_frame_cie, | |
5522 | sizeof (Eh_cie<64>::eh_frame_cie), | |
5523 | glink_eh_frame_fde_64v2, | |
5524 | sizeof (glink_eh_frame_fde_64v2)); | |
5525 | } | |
5526 | else | |
5527 | { | |
5528 | // 32-bit .glink can use the default since the CIE return | |
5529 | // address reg, LR, is valid. | |
5530 | layout->add_eh_frame_for_plt(this, | |
5531 | Eh_cie<32>::eh_frame_cie, | |
5532 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5533 | default_fde, | |
5534 | sizeof (default_fde)); | |
5535 | // Except where LR is used in a PIC __glink_PLTresolve. | |
5536 | if (parameters->options().output_is_position_independent()) | |
5537 | layout->add_eh_frame_for_plt(this, | |
5538 | Eh_cie<32>::eh_frame_cie, | |
5539 | sizeof (Eh_cie<32>::eh_frame_cie), | |
5540 | glink_eh_frame_fde_32, | |
5541 | sizeof (glink_eh_frame_fde_32)); | |
5542 | } | |
5543 | } | |
5544 | ||
5545 | template<int size, bool big_endian> | |
5546 | void | |
5547 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
5548 | { | |
9e390558 | 5549 | unsigned int off = this->global_entry_align(this->ge_size_); |
9055360d | 5550 | std::pair<typename Global_entry_stub_entries::iterator, bool> p |
9e390558 | 5551 | = this->global_entry_stubs_.insert(std::make_pair(gsym, off)); |
9055360d | 5552 | if (p.second) |
407aa07c | 5553 | this->ge_size_ = off + 16; |
9055360d AM |
5554 | } |
5555 | ||
5556 | template<int size, bool big_endian> | |
5557 | typename Output_data_glink<size, big_endian>::Address | |
5558 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
5559 | { | |
5560 | typename Global_entry_stub_entries::const_iterator p | |
5561 | = this->global_entry_stubs_.find(gsym); | |
5562 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
5563 | } | |
5564 | ||
cf43a2fe AM |
5565 | template<int size, bool big_endian> |
5566 | void | |
5567 | Output_data_glink<size, big_endian>::set_final_data_size() | |
5568 | { | |
ec661b9d AM |
5569 | unsigned int count = this->targ_->plt_entry_count(); |
5570 | section_size_type total = 0; | |
cf43a2fe AM |
5571 | |
5572 | if (count != 0) | |
5573 | { | |
5574 | if (size == 32) | |
5575 | { | |
cf43a2fe AM |
5576 | // space for branch table |
5577 | total += 4 * (count - 1); | |
5578 | ||
5579 | total += -total & 15; | |
9e390558 | 5580 | total += this->pltresolve_size(); |
cf43a2fe AM |
5581 | } |
5582 | else | |
5583 | { | |
9e390558 | 5584 | total += this->pltresolve_size(); |
cf43a2fe AM |
5585 | |
5586 | // space for branch table | |
b4f7960d AM |
5587 | total += 4 * count; |
5588 | if (this->targ_->abiversion() < 2) | |
5589 | { | |
5590 | total += 4 * count; | |
5591 | if (count > 0x8000) | |
5592 | total += 4 * (count - 0x8000); | |
5593 | } | |
cf43a2fe AM |
5594 | } |
5595 | } | |
9055360d | 5596 | this->end_branch_table_ = total; |
9e390558 | 5597 | total = this->global_entry_align(total); |
9055360d | 5598 | total += this->ge_size_; |
cf43a2fe AM |
5599 | |
5600 | this->set_data_size(total); | |
5601 | } | |
5602 | ||
590b87ff AM |
5603 | // Define symbols on stubs, identifying the stub. |
5604 | ||
5605 | template<int size, bool big_endian> | |
5606 | void | |
5607 | Stub_table<size, big_endian>::define_stub_syms(Symbol_table* symtab) | |
5608 | { | |
5609 | if (!this->plt_call_stubs_.empty()) | |
5610 | { | |
5611 | // The key for the plt call stub hash table includes addresses, | |
5612 | // therefore traversal order depends on those addresses, which | |
5613 | // can change between runs if gold is a PIE. Unfortunately the | |
5614 | // output .symtab ordering depends on the order in which symbols | |
5615 | // are added to the linker symtab. We want reproducible output | |
5616 | // so must sort the call stub symbols. | |
5617 | typedef typename Plt_stub_entries::const_iterator plt_iter; | |
5618 | std::vector<plt_iter> sorted; | |
5619 | sorted.resize(this->plt_call_stubs_.size()); | |
5620 | ||
5621 | for (plt_iter cs = this->plt_call_stubs_.begin(); | |
5622 | cs != this->plt_call_stubs_.end(); | |
5623 | ++cs) | |
bdab445c | 5624 | sorted[cs->second.indx_] = cs; |
590b87ff AM |
5625 | |
5626 | for (unsigned int i = 0; i < this->plt_call_stubs_.size(); ++i) | |
5627 | { | |
5628 | plt_iter cs = sorted[i]; | |
5629 | char add[10]; | |
5630 | add[0] = 0; | |
5631 | if (cs->first.addend_ != 0) | |
5632 | sprintf(add, "+%x", static_cast<uint32_t>(cs->first.addend_)); | |
94de2a2c JC |
5633 | char obj[10]; |
5634 | obj[0] = 0; | |
5635 | if (cs->first.object_) | |
590b87ff AM |
5636 | { |
5637 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
5638 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
94de2a2c JC |
5639 | sprintf(obj, "%x:", ppcobj->uniq()); |
5640 | } | |
5641 | char localname[9]; | |
5642 | const char *symname; | |
5643 | if (cs->first.sym_ == NULL) | |
5644 | { | |
5645 | sprintf(localname, "%x", cs->first.locsym_); | |
590b87ff AM |
5646 | symname = localname; |
5647 | } | |
34e0882b AM |
5648 | else if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) |
5649 | symname = this->targ_->tls_get_addr_opt()->name(); | |
590b87ff AM |
5650 | else |
5651 | symname = cs->first.sym_->name(); | |
94de2a2c JC |
5652 | char* name = new char[8 + 10 + strlen(obj) + strlen(symname) + strlen(add) + 1]; |
5653 | sprintf(name, "%08x.plt_call.%s%s%s", this->uniq_, obj, symname, add); | |
bdab445c AM |
5654 | Address value |
5655 | = this->stub_address() - this->address() + cs->second.off_; | |
34e0882b | 5656 | unsigned int stub_size = this->plt_call_align(this->plt_call_size(cs)); |
590b87ff AM |
5657 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5658 | } | |
5659 | } | |
5660 | ||
5661 | typedef typename Branch_stub_entries::const_iterator branch_iter; | |
5662 | for (branch_iter bs = this->long_branch_stubs_.begin(); | |
5663 | bs != this->long_branch_stubs_.end(); | |
5664 | ++bs) | |
5665 | { | |
32f59844 | 5666 | if (bs->second.save_res_) |
590b87ff AM |
5667 | continue; |
5668 | ||
5669 | char* name = new char[8 + 13 + 16 + 1]; | |
5670 | sprintf(name, "%08x.long_branch.%llx", this->uniq_, | |
5671 | static_cast<unsigned long long>(bs->first.dest_)); | |
5672 | Address value = (this->stub_address() - this->address() | |
32f59844 AM |
5673 | + this->plt_size_ + bs->second.off_); |
5674 | bool need_lt = false; | |
5675 | unsigned int stub_size = this->branch_stub_size(bs, &need_lt); | |
590b87ff AM |
5676 | this->targ_->define_local(symtab, name, this, value, stub_size); |
5677 | } | |
5678 | } | |
5679 | ||
32f59844 AM |
5680 | // Emit the start of a __tls_get_addr_opt plt call stub. |
5681 | ||
5682 | template<int size, bool big_endian> | |
5683 | bool | |
5684 | Stub_table<size, big_endian>::build_tls_opt_head( | |
5685 | unsigned char** pp, | |
5686 | typename Plt_stub_entries::const_iterator cs) | |
5687 | { | |
5688 | if (this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
5689 | { | |
5690 | unsigned char* p = *pp; | |
5691 | if (size == 64) | |
5692 | { | |
5693 | write_insn<big_endian>(p, ld_11_3 + 0); | |
5694 | p += 4; | |
5695 | write_insn<big_endian>(p, ld_12_3 + 8); | |
5696 | p += 4; | |
5697 | write_insn<big_endian>(p, mr_0_3); | |
5698 | p += 4; | |
5699 | write_insn<big_endian>(p, cmpdi_11_0); | |
5700 | p += 4; | |
5701 | write_insn<big_endian>(p, add_3_12_13); | |
5702 | p += 4; | |
5703 | write_insn<big_endian>(p, beqlr); | |
5704 | p += 4; | |
5705 | write_insn<big_endian>(p, mr_3_0); | |
5706 | p += 4; | |
5707 | if (cs->second.r2save_ && !cs->second.localentry0_) | |
5708 | { | |
5709 | write_insn<big_endian>(p, mflr_11); | |
5710 | p += 4; | |
5711 | write_insn<big_endian>(p, (std_11_1 + this->targ_->stk_linker())); | |
5712 | p += 4; | |
5713 | } | |
5714 | } | |
5715 | else | |
5716 | { | |
5717 | write_insn<big_endian>(p, lwz_11_3 + 0); | |
5718 | p += 4; | |
5719 | write_insn<big_endian>(p, lwz_12_3 + 4); | |
5720 | p += 4; | |
5721 | write_insn<big_endian>(p, mr_0_3); | |
5722 | p += 4; | |
5723 | write_insn<big_endian>(p, cmpwi_11_0); | |
5724 | p += 4; | |
5725 | write_insn<big_endian>(p, add_3_12_2); | |
5726 | p += 4; | |
5727 | write_insn<big_endian>(p, beqlr); | |
5728 | p += 4; | |
5729 | write_insn<big_endian>(p, mr_3_0); | |
5730 | p += 4; | |
5731 | write_insn<big_endian>(p, nop); | |
5732 | p += 4; | |
5733 | } | |
5734 | *pp = p; | |
5735 | return true; | |
5736 | } | |
5737 | return false; | |
5738 | } | |
5739 | ||
5740 | // Emit the tail of a __tls_get_addr_opt plt call stub. | |
5741 | ||
5742 | template<int size, bool big_endian> | |
5743 | bool | |
5744 | Stub_table<size, big_endian>::build_tls_opt_tail( | |
5745 | unsigned char* p, | |
5746 | typename Plt_stub_entries::const_iterator cs) | |
5747 | { | |
5748 | if (size == 64 | |
5749 | && cs->second.r2save_ | |
5750 | && !cs->second.localentry0_ | |
5751 | && this->targ_->is_tls_get_addr_opt(cs->first.sym_)) | |
5752 | { | |
5753 | write_insn<big_endian>(p, bctrl); | |
5754 | p += 4; | |
5755 | write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc()); | |
5756 | p += 4; | |
5757 | write_insn<big_endian>(p, ld_11_1 + this->targ_->stk_linker()); | |
5758 | p += 4; | |
5759 | write_insn<big_endian>(p, mtlr_11); | |
5760 | p += 4; | |
5761 | write_insn<big_endian>(p, blr); | |
5762 | return true; | |
5763 | } | |
5764 | return false; | |
5765 | } | |
5766 | ||
e4dff765 AM |
5767 | // Emit pc-relative plt call stub code. |
5768 | ||
5769 | template<bool big_endian> | |
5770 | static unsigned char* | |
5771 | build_powerxx_offset(unsigned char* p, uint64_t off, uint64_t odd, bool load) | |
5772 | { | |
5773 | uint64_t insn; | |
5774 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
5775 | { | |
5776 | off -= odd; | |
5777 | if (odd) | |
5778 | { | |
5779 | write_insn<big_endian>(p, nop); | |
5780 | p += 4; | |
5781 | } | |
5782 | if (load) | |
5783 | insn = pld_12_pc; | |
5784 | else | |
5785 | insn = paddi_12_pc; | |
5786 | insn |= d34(off); | |
5787 | write_insn<big_endian>(p, insn >> 32); | |
5788 | p += 4; | |
5789 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5790 | } | |
5791 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
5792 | { | |
5793 | off -= 8 - odd; | |
5794 | write_insn<big_endian>(p, li_11_0 | (ha34(off) & 0xffff)); | |
5795 | p += 4; | |
5796 | if (!odd) | |
5797 | { | |
5798 | write_insn<big_endian>(p, sldi_11_11_34); | |
5799 | p += 4; | |
5800 | } | |
5801 | insn = paddi_12_pc | d34(off); | |
5802 | write_insn<big_endian>(p, insn >> 32); | |
5803 | p += 4; | |
5804 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5805 | p += 4; | |
5806 | if (odd) | |
5807 | { | |
5808 | write_insn<big_endian>(p, sldi_11_11_34); | |
5809 | p += 4; | |
5810 | } | |
5811 | if (load) | |
5812 | write_insn<big_endian>(p, ldx_12_11_12); | |
5813 | else | |
5814 | write_insn<big_endian>(p, add_12_11_12); | |
5815 | } | |
5816 | else | |
5817 | { | |
5818 | off -= odd + 8; | |
5819 | write_insn<big_endian>(p, lis_11 | ((ha34(off) >> 16) & 0x3fff)); | |
5820 | p += 4; | |
5821 | write_insn<big_endian>(p, ori_11_11_0 | (ha34(off) & 0xffff)); | |
5822 | p += 4; | |
5823 | if (odd) | |
5824 | { | |
5825 | write_insn<big_endian>(p, sldi_11_11_34); | |
5826 | p += 4; | |
5827 | } | |
5828 | insn = paddi_12_pc | d34(off); | |
5829 | write_insn<big_endian>(p, insn >> 32); | |
5830 | p += 4; | |
5831 | write_insn<big_endian>(p, insn & 0xffffffff); | |
5832 | p += 4; | |
5833 | if (!odd) | |
5834 | { | |
5835 | write_insn<big_endian>(p, sldi_11_11_34); | |
5836 | p += 4; | |
5837 | } | |
5838 | if (load) | |
5839 | write_insn<big_endian>(p, ldx_12_11_12); | |
5840 | else | |
5841 | write_insn<big_endian>(p, add_12_11_12); | |
5842 | } | |
5843 | p += 4; | |
5844 | return p; | |
5845 | } | |
5846 | ||
32f59844 AM |
5847 | // Gets the address of a label (1:) in r11 and builds an offset in r12, |
5848 | // then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
5849 | // mflr %r12 | |
5850 | // bcl 20,31,1f | |
5851 | // 1: mflr %r11 | |
5852 | // mtlr %r12 | |
5853 | // lis %r12,xxx-1b@highest | |
5854 | // ori %r12,%r12,xxx-1b@higher | |
5855 | // sldi %r12,%r12,32 | |
5856 | // oris %r12,%r12,xxx-1b@high | |
5857 | // ori %r12,%r12,xxx-1b@l | |
5858 | // add/ldx %r12,%r11,%r12 | |
5859 | ||
5860 | template<bool big_endian> | |
5861 | static unsigned char* | |
5862 | build_notoc_offset(unsigned char* p, uint64_t off, bool load) | |
5863 | { | |
5864 | write_insn<big_endian>(p, mflr_12); | |
5865 | p += 4; | |
5866 | write_insn<big_endian>(p, bcl_20_31); | |
5867 | p += 4; | |
5868 | write_insn<big_endian>(p, mflr_11); | |
5869 | p += 4; | |
5870 | write_insn<big_endian>(p, mtlr_12); | |
5871 | p += 4; | |
5872 | if (off + 0x8000 < 0x10000) | |
5873 | { | |
5874 | if (load) | |
5875 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
5876 | else | |
5877 | write_insn<big_endian>(p, addi_12_11 + l(off)); | |
5878 | } | |
5879 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
5880 | { | |
5881 | write_insn<big_endian>(p, addis_12_11 + ha(off)); | |
5882 | p += 4; | |
5883 | if (load) | |
5884 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
5885 | else | |
5886 | write_insn<big_endian>(p, addi_12_12 + l(off)); | |
5887 | } | |
5888 | else | |
5889 | { | |
5890 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
5891 | { | |
5892 | write_insn<big_endian>(p, li_12_0 + ((off >> 32) & 0xffff)); | |
5893 | p += 4; | |
5894 | } | |
5895 | else | |
5896 | { | |
5897 | write_insn<big_endian>(p, lis_12 + ((off >> 48) & 0xffff)); | |
5898 | p += 4; | |
5899 | if (((off >> 32) & 0xffff) != 0) | |
5900 | { | |
5901 | write_insn<big_endian>(p, ori_12_12_0 + ((off >> 32) & 0xffff)); | |
5902 | p += 4; | |
5903 | } | |
5904 | } | |
5905 | if (((off >> 32) & 0xffffffffULL) != 0) | |
5906 | { | |
5907 | write_insn<big_endian>(p, sldi_12_12_32); | |
5908 | p += 4; | |
5909 | } | |
5910 | if (hi(off) != 0) | |
5911 | { | |
5912 | write_insn<big_endian>(p, oris_12_12_0 + hi(off)); | |
5913 | p += 4; | |
5914 | } | |
5915 | if (l(off) != 0) | |
5916 | { | |
5917 | write_insn<big_endian>(p, ori_12_12_0 + l(off)); | |
5918 | p += 4; | |
5919 | } | |
5920 | if (load) | |
5921 | write_insn<big_endian>(p, ldx_12_11_12); | |
5922 | else | |
5923 | write_insn<big_endian>(p, add_12_11_12); | |
5924 | } | |
5925 | p += 4; | |
5926 | return p; | |
5927 | } | |
5928 | ||
5929 | // Size of a given plt call stub. | |
5930 | ||
5931 | template<int size, bool big_endian> | |
5932 | unsigned int | |
5933 | Stub_table<size, big_endian>::plt_call_size( | |
5934 | typename Plt_stub_entries::const_iterator p) const | |
5935 | { | |
5936 | if (size == 32) | |
5937 | { | |
5938 | const Symbol* gsym = p->first.sym_; | |
5939 | return (4 * 4 | |
5940 | + (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0)); | |
5941 | } | |
5942 | ||
5943 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
5944 | uint64_t plt_addr = this->plt_off(p, &plt); | |
5945 | plt_addr += plt->address(); | |
5946 | unsigned int bytes = 0; | |
5947 | const Symbol* gsym = p->first.sym_; | |
5948 | if (this->targ_->is_tls_get_addr_opt(gsym)) | |
5949 | { | |
5950 | if (p->second.r2save_ && !p->second.localentry0_) | |
5951 | bytes = 13 * 4; | |
5952 | else | |
5953 | bytes = 7 * 4; | |
5954 | } | |
5955 | ||
5956 | if (p->second.r2save_) | |
5957 | bytes += 4; | |
5958 | ||
e4dff765 AM |
5959 | if (this->targ_->powerxx_stubs()) |
5960 | { | |
5961 | uint64_t from = this->stub_address() + p->second.off_ + bytes; | |
5962 | if (bytes > 8 * 4) | |
5963 | from -= 4 * 4; | |
5964 | uint64_t odd = from & 4; | |
5965 | uint64_t off = plt_addr - from; | |
5966 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
5967 | bytes += odd + 4 * 4; | |
5968 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
5969 | bytes += 7 * 4; | |
5970 | else | |
5971 | bytes += 8 * 4; | |
5972 | return bytes; | |
5973 | } | |
5974 | ||
32f59844 AM |
5975 | if (p->second.notoc_) |
5976 | { | |
5977 | uint64_t from = this->stub_address() + p->second.off_ + bytes + 2 * 4; | |
5978 | if (bytes > 32) | |
5979 | from -= 4 * 4; | |
5980 | uint64_t off = plt_addr - from; | |
5981 | if (off + 0x8000 < 0x10000) | |
5982 | bytes += 7 * 4; | |
5983 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
5984 | bytes += 8 * 4; | |
5985 | else | |
5986 | { | |
5987 | bytes += 8 * 4; | |
5988 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
5989 | && ((off >> 32) & 0xffff) != 0) | |
5990 | bytes += 4; | |
5991 | if (((off >> 32) & 0xffffffffULL) != 0) | |
5992 | bytes += 4; | |
5993 | if (hi(off) != 0) | |
5994 | bytes += 4; | |
5995 | if (l(off) != 0) | |
5996 | bytes += 4; | |
5997 | } | |
5998 | return bytes; | |
5999 | } | |
6000 | ||
6001 | uint64_t got_addr = this->targ_->got_section()->output_section()->address(); | |
6002 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6003 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
6004 | got_addr += ppcobj->toc_base_offset(); | |
6005 | uint64_t off = plt_addr - got_addr; | |
6006 | bytes += 3 * 4 + 4 * (ha(off) != 0); | |
6007 | if (this->targ_->abiversion() < 2) | |
6008 | { | |
6009 | bool static_chain = parameters->options().plt_static_chain(); | |
6010 | bool thread_safe = this->targ_->plt_thread_safe(); | |
6011 | bytes += (4 | |
6012 | + 4 * static_chain | |
6013 | + 8 * thread_safe | |
6014 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
6015 | } | |
6016 | return bytes; | |
6017 | } | |
6018 | ||
6019 | // Return long branch stub size. | |
6020 | ||
6021 | template<int size, bool big_endian> | |
6022 | unsigned int | |
6023 | Stub_table<size, big_endian>::branch_stub_size( | |
6024 | typename Branch_stub_entries::const_iterator p, | |
6025 | bool* need_lt) | |
6026 | { | |
6027 | Address loc = this->stub_address() + this->last_plt_size_ + p->second.off_; | |
6028 | if (size == 32) | |
6029 | { | |
6030 | if (p->first.dest_ - loc + (1 << 25) < 2 << 25) | |
6031 | return 4; | |
6032 | if (parameters->options().output_is_position_independent()) | |
6033 | return 32; | |
6034 | return 16; | |
6035 | } | |
6036 | ||
6037 | uint64_t off = p->first.dest_ - loc; | |
6038 | if (p->second.notoc_) | |
6039 | { | |
e4dff765 AM |
6040 | if (this->targ_->powerxx_stubs()) |
6041 | { | |
6042 | Address odd = loc & 4; | |
6043 | if (off + (1 << 25) < 2 << 25) | |
6044 | return odd + 12; | |
6045 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
6046 | return odd + 16; | |
6047 | if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
6048 | return 28; | |
6049 | return 32; | |
6050 | } | |
32f59844 AM |
6051 | off -= 8; |
6052 | if (off + 0x8000 < 0x10000) | |
6053 | return 24; | |
6054 | if (off + 0x80008000ULL < 0x100000000ULL) | |
6055 | { | |
6056 | if (off + 24 + (1 << 25) < 2 << 25) | |
6057 | return 28; | |
6058 | return 32; | |
6059 | } | |
6060 | unsigned int bytes = 32; | |
6061 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
6062 | && ((off >> 32) & 0xffff) != 0) | |
6063 | bytes += 4; | |
6064 | if (((off >> 32) & 0xffffffffULL) != 0) | |
6065 | bytes += 4; | |
6066 | if (hi(off) != 0) | |
6067 | bytes += 4; | |
6068 | if (l(off) != 0) | |
6069 | bytes += 4; | |
6070 | return bytes; | |
6071 | } | |
6072 | ||
6073 | if (off + (1 << 25) < 2 << 25) | |
6074 | return 4; | |
e4dff765 AM |
6075 | if (!this->targ_->powerxx_stubs()) |
6076 | *need_lt = true; | |
32f59844 AM |
6077 | return 16; |
6078 | } | |
6079 | ||
f073a3e8 AM |
6080 | template<int size, bool big_endian> |
6081 | void | |
6082 | Stub_table<size, big_endian>::plt_error(const Plt_stub_key& p) | |
6083 | { | |
6084 | if (p.sym_) | |
6085 | gold_error(_("linkage table error against `%s'"), | |
6086 | p.sym_->demangled_name().c_str()); | |
6087 | else | |
6088 | gold_error(_("linkage table error against `%s:[local %u]'"), | |
6089 | p.object_->name().c_str(), | |
6090 | p.locsym_); | |
6091 | } | |
6092 | ||
ec661b9d | 6093 | // Write out plt and long branch stub code. |
cf43a2fe AM |
6094 | |
6095 | template<int size, bool big_endian> | |
6096 | void | |
ec661b9d | 6097 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 6098 | { |
ec661b9d AM |
6099 | if (this->plt_call_stubs_.empty() |
6100 | && this->long_branch_stubs_.empty()) | |
6101 | return; | |
6102 | ||
6103 | const section_size_type start_off = this->offset(); | |
6104 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 6105 | const section_size_type oview_size = |
ec661b9d | 6106 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 6107 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 6108 | unsigned char* p; |
42cacb20 | 6109 | |
e4dff765 AM |
6110 | if (size == 64 |
6111 | && this->targ_->powerxx_stubs()) | |
6112 | { | |
6113 | if (!this->plt_call_stubs_.empty()) | |
6114 | { | |
6115 | // Write out plt call stubs. | |
6116 | typename Plt_stub_entries::const_iterator cs; | |
6117 | for (cs = this->plt_call_stubs_.begin(); | |
6118 | cs != this->plt_call_stubs_.end(); | |
6119 | ++cs) | |
6120 | { | |
6121 | p = oview + cs->second.off_; | |
6122 | this->build_tls_opt_head(&p, cs); | |
6123 | if (cs->second.r2save_) | |
6124 | { | |
6125 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6126 | p += 4; | |
6127 | } | |
6128 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6129 | Address pltoff = this->plt_off(cs, &plt); | |
6130 | Address plt_addr = pltoff + plt->address(); | |
6131 | Address from = this->stub_address() + (p - oview); | |
6132 | Address delta = plt_addr - from; | |
6133 | p = build_powerxx_offset<big_endian>(p, delta, from & 4, true); | |
6134 | write_insn<big_endian>(p, mtctr_12); | |
6135 | p += 4; | |
6136 | if (!this->build_tls_opt_tail(p, cs)) | |
6137 | write_insn<big_endian>(p, bctr); | |
6138 | } | |
6139 | } | |
6140 | ||
6141 | // Write out long branch stubs. | |
6142 | typename Branch_stub_entries::const_iterator bs; | |
6143 | for (bs = this->long_branch_stubs_.begin(); | |
6144 | bs != this->long_branch_stubs_.end(); | |
6145 | ++bs) | |
6146 | { | |
6147 | if (bs->second.save_res_) | |
6148 | continue; | |
6149 | Address off = this->plt_size_ + bs->second.off_; | |
6150 | p = oview + off; | |
6151 | Address loc = this->stub_address() + off; | |
6152 | Address delta = bs->first.dest_ - loc; | |
6153 | if (bs->second.notoc_ || delta + (1 << 25) >= 2 << 25) | |
6154 | { | |
6155 | unsigned char* startp = p; | |
6156 | p = build_powerxx_offset<big_endian>(p, delta, loc & 4, false); | |
6157 | delta -= p - startp; | |
6158 | } | |
6159 | if (delta + (1 << 25) < 2 << 25) | |
6160 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6161 | else | |
6162 | { | |
6163 | write_insn<big_endian>(p, mtctr_12); | |
6164 | p += 4; | |
6165 | write_insn<big_endian>(p, bctr); | |
6166 | } | |
6167 | } | |
6168 | } | |
6169 | else if (size == 64) | |
cf43a2fe | 6170 | { |
ec661b9d AM |
6171 | const Output_data_got_powerpc<size, big_endian>* got |
6172 | = this->targ_->got_section(); | |
dd93cd0a | 6173 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 6174 | |
32f59844 AM |
6175 | if (!this->plt_call_stubs_.empty() |
6176 | && this->targ_->abiversion() >= 2) | |
cf43a2fe | 6177 | { |
32f59844 AM |
6178 | // Write out plt call stubs for ELFv2. |
6179 | typename Plt_stub_entries::const_iterator cs; | |
6180 | for (cs = this->plt_call_stubs_.begin(); | |
6181 | cs != this->plt_call_stubs_.end(); | |
6182 | ++cs) | |
6183 | { | |
6184 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
6185 | Address pltoff = this->plt_off(cs, &plt); | |
6186 | Address plt_addr = pltoff + plt->address(); | |
6187 | ||
6188 | p = oview + cs->second.off_; | |
6189 | this->build_tls_opt_head(&p, cs); | |
6190 | if (cs->second.r2save_) | |
6191 | { | |
6192 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); | |
6193 | p += 4; | |
6194 | } | |
6195 | if (cs->second.notoc_) | |
6196 | { | |
6197 | Address from = this->stub_address() + (p - oview) + 8; | |
6198 | Address off = plt_addr - from; | |
6199 | p = build_notoc_offset<big_endian>(p, off, true); | |
6200 | } | |
6201 | else | |
6202 | { | |
6203 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
6204 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6205 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
6206 | Address off = plt_addr - got_addr; | |
6207 | ||
6208 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) | |
6209 | this->plt_error(cs->first); | |
6210 | ||
6211 | if (ha(off) != 0) | |
6212 | { | |
6213 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
6214 | p += 4; | |
6215 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
6216 | p += 4; | |
6217 | } | |
6218 | else | |
6219 | { | |
6220 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
6221 | p += 4; | |
6222 | } | |
6223 | } | |
6224 | write_insn<big_endian>(p, mtctr_12); | |
6225 | p += 4; | |
6226 | if (!this->build_tls_opt_tail(p, cs)) | |
6227 | write_insn<big_endian>(p, bctr); | |
6228 | } | |
6229 | } | |
6230 | else if (!this->plt_call_stubs_.empty()) | |
6231 | { | |
6232 | // Write out plt call stubs for ELFv1. | |
ec661b9d AM |
6233 | typename Plt_stub_entries::const_iterator cs; |
6234 | for (cs = this->plt_call_stubs_.begin(); | |
6235 | cs != this->plt_call_stubs_.end(); | |
6236 | ++cs) | |
e5d5f5ed | 6237 | { |
08be3224 AM |
6238 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6239 | Address pltoff = this->plt_off(cs, &plt); | |
6240 | Address plt_addr = pltoff + plt->address(); | |
ec661b9d AM |
6241 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
6242 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
6243 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 6244 | Address off = plt_addr - got_addr; |
ec661b9d | 6245 | |
32f59844 AM |
6246 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0 |
6247 | || cs->second.notoc_) | |
f073a3e8 | 6248 | this->plt_error(cs->first); |
ec661b9d | 6249 | |
32f59844 AM |
6250 | bool static_chain = parameters->options().plt_static_chain(); |
6251 | bool thread_safe = this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
6252 | bool use_fake_dep = false; |
6253 | Address cmp_branch_off = 0; | |
407aa07c | 6254 | if (thread_safe) |
9e69ed50 AM |
6255 | { |
6256 | unsigned int pltindex | |
6257 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
6258 | / this->targ_->plt_entry_size()); | |
6259 | Address glinkoff | |
9e390558 | 6260 | = (this->targ_->glink_section()->pltresolve_size() |
9e69ed50 AM |
6261 | + pltindex * 8); |
6262 | if (pltindex > 32768) | |
6263 | glinkoff += (pltindex - 32768) * 4; | |
6264 | Address to | |
6265 | = this->targ_->glink_section()->address() + glinkoff; | |
6266 | Address from | |
7e57d19e AM |
6267 | = (this->stub_address() + cs->second.off_ + 20 |
6268 | + 4 * cs->second.r2save_ | |
9e69ed50 AM |
6269 | + 4 * (ha(off) != 0) |
6270 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
6271 | + 4 * static_chain); | |
6272 | cmp_branch_off = to - from; | |
6273 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
6274 | } | |
6275 | ||
bdab445c | 6276 | p = oview + cs->second.off_; |
32f59844 AM |
6277 | if (this->build_tls_opt_head(&p, cs)) |
6278 | use_fake_dep = thread_safe; | |
6279 | if (cs->second.r2save_) | |
34e0882b | 6280 | { |
32f59844 | 6281 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
34e0882b | 6282 | p += 4; |
34e0882b | 6283 | } |
9e69ed50 | 6284 | if (ha(off) != 0) |
ec661b9d | 6285 | { |
32f59844 AM |
6286 | write_insn<big_endian>(p, addis_11_2 + ha(off)); |
6287 | p += 4; | |
6288 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
6289 | p += 4; | |
6290 | if (ha(off + 8 + 8 * static_chain) != ha(off)) | |
397998fc | 6291 | { |
32f59844 | 6292 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
397998fc | 6293 | p += 4; |
32f59844 | 6294 | off = 0; |
397998fc | 6295 | } |
32f59844 AM |
6296 | write_insn<big_endian>(p, mtctr_12); |
6297 | p += 4; | |
6298 | if (use_fake_dep) | |
397998fc | 6299 | { |
32f59844 | 6300 | write_insn<big_endian>(p, xor_2_12_12); |
397998fc | 6301 | p += 4; |
32f59844 | 6302 | write_insn<big_endian>(p, add_11_11_2); |
397998fc AM |
6303 | p += 4; |
6304 | } | |
32f59844 | 6305 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); |
b4f7960d | 6306 | p += 4; |
32f59844 | 6307 | if (static_chain) |
9e69ed50 | 6308 | { |
32f59844 | 6309 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); |
b4f7960d | 6310 | p += 4; |
9e69ed50 | 6311 | } |
ec661b9d AM |
6312 | } |
6313 | else | |
6314 | { | |
b4f7960d AM |
6315 | write_insn<big_endian>(p, ld_12_2 + l(off)); |
6316 | p += 4; | |
32f59844 | 6317 | if (ha(off + 8 + 8 * static_chain) != ha(off)) |
ec661b9d | 6318 | { |
b4f7960d AM |
6319 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
6320 | p += 4; | |
9e69ed50 | 6321 | off = 0; |
ec661b9d | 6322 | } |
b4f7960d AM |
6323 | write_insn<big_endian>(p, mtctr_12); |
6324 | p += 4; | |
32f59844 | 6325 | if (use_fake_dep) |
9e69ed50 | 6326 | { |
32f59844 AM |
6327 | write_insn<big_endian>(p, xor_11_12_12); |
6328 | p += 4; | |
6329 | write_insn<big_endian>(p, add_2_2_11); | |
b4f7960d | 6330 | p += 4; |
9e69ed50 | 6331 | } |
32f59844 AM |
6332 | if (static_chain) |
6333 | { | |
6334 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
6335 | p += 4; | |
6336 | } | |
6337 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
34e0882b | 6338 | p += 4; |
34e0882b | 6339 | } |
32f59844 AM |
6340 | if (this->build_tls_opt_tail(p, cs)) |
6341 | ; | |
34e0882b | 6342 | else if (thread_safe && !use_fake_dep) |
9e69ed50 | 6343 | { |
b4f7960d AM |
6344 | write_insn<big_endian>(p, cmpldi_2_0); |
6345 | p += 4; | |
6346 | write_insn<big_endian>(p, bnectr_p4); | |
6347 | p += 4; | |
9e69ed50 AM |
6348 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
6349 | } | |
6350 | else | |
407aa07c | 6351 | write_insn<big_endian>(p, bctr); |
e5d5f5ed | 6352 | } |
ec661b9d AM |
6353 | } |
6354 | ||
6355 | // Write out long branch stubs. | |
6356 | typename Branch_stub_entries::const_iterator bs; | |
6357 | for (bs = this->long_branch_stubs_.begin(); | |
6358 | bs != this->long_branch_stubs_.end(); | |
6359 | ++bs) | |
6360 | { | |
32f59844 | 6361 | if (bs->second.save_res_) |
d49044c7 | 6362 | continue; |
32f59844 AM |
6363 | Address off = this->plt_size_ + bs->second.off_; |
6364 | p = oview + off; | |
6365 | Address loc = this->stub_address() + off; | |
ec661b9d | 6366 | Address delta = bs->first.dest_ - loc; |
32f59844 AM |
6367 | if (bs->second.notoc_) |
6368 | { | |
6369 | unsigned char* startp = p; | |
6370 | p = build_notoc_offset<big_endian>(p, off, false); | |
6371 | delta -= p - startp; | |
6372 | } | |
6373 | else if (delta + (1 << 25) >= 2 << 25) | |
cf43a2fe | 6374 | { |
ec661b9d AM |
6375 | Address brlt_addr |
6376 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
6377 | gold_assert(brlt_addr != invalid_address); | |
6378 | brlt_addr += this->targ_->brlt_section()->address(); | |
6379 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
6380 | Address brltoff = brlt_addr - got_addr; | |
6381 | if (ha(brltoff) == 0) | |
6382 | { | |
32f59844 AM |
6383 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)); |
6384 | p += 4; | |
ec661b9d AM |
6385 | } |
6386 | else | |
cf43a2fe | 6387 | { |
32f59844 AM |
6388 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)); |
6389 | p += 4; | |
6390 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)); | |
6391 | p += 4; | |
cf43a2fe | 6392 | } |
32f59844 AM |
6393 | } |
6394 | if (delta + (1 << 25) < 2 << 25) | |
6395 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6396 | else | |
6397 | { | |
6398 | write_insn<big_endian>(p, mtctr_12); | |
6399 | p += 4; | |
407aa07c | 6400 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6401 | } |
ec661b9d AM |
6402 | } |
6403 | } | |
32f59844 | 6404 | else // size == 32 |
ec661b9d AM |
6405 | { |
6406 | if (!this->plt_call_stubs_.empty()) | |
6407 | { | |
ec661b9d AM |
6408 | // The address of _GLOBAL_OFFSET_TABLE_. |
6409 | Address g_o_t = invalid_address; | |
6410 | ||
6411 | // Write out plt call stubs. | |
6412 | typename Plt_stub_entries::const_iterator cs; | |
6413 | for (cs = this->plt_call_stubs_.begin(); | |
6414 | cs != this->plt_call_stubs_.end(); | |
6415 | ++cs) | |
cf43a2fe | 6416 | { |
08be3224 AM |
6417 | const Output_data_plt_powerpc<size, big_endian>* plt; |
6418 | Address plt_addr = this->plt_off(cs, &plt); | |
6419 | plt_addr += plt->address(); | |
ec661b9d | 6420 | |
bdab445c | 6421 | p = oview + cs->second.off_; |
32f59844 | 6422 | this->build_tls_opt_head(&p, cs); |
ec661b9d AM |
6423 | if (parameters->options().output_is_position_independent()) |
6424 | { | |
6425 | Address got_addr; | |
6426 | const Powerpc_relobj<size, big_endian>* ppcobj | |
6427 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
6428 | (cs->first.object_)); | |
6429 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
6430 | { | |
6431 | unsigned int got2 = ppcobj->got2_shndx(); | |
6432 | got_addr = ppcobj->get_output_section_offset(got2); | |
6433 | gold_assert(got_addr != invalid_address); | |
6434 | got_addr += (ppcobj->output_section(got2)->address() | |
6435 | + cs->first.addend_); | |
6436 | } | |
6437 | else | |
6438 | { | |
6439 | if (g_o_t == invalid_address) | |
6440 | { | |
6441 | const Output_data_got_powerpc<size, big_endian>* got | |
6442 | = this->targ_->got_section(); | |
6443 | g_o_t = got->address() + got->g_o_t(); | |
6444 | } | |
6445 | got_addr = g_o_t; | |
6446 | } | |
6447 | ||
9e69ed50 AM |
6448 | Address off = plt_addr - got_addr; |
6449 | if (ha(off) == 0) | |
9e390558 | 6450 | write_insn<big_endian>(p, lwz_11_30 + l(off)); |
ec661b9d AM |
6451 | else |
6452 | { | |
9e390558 AM |
6453 | write_insn<big_endian>(p, addis_11_30 + ha(off)); |
6454 | p += 4; | |
6455 | write_insn<big_endian>(p, lwz_11_11 + l(off)); | |
ec661b9d AM |
6456 | } |
6457 | } | |
6458 | else | |
6459 | { | |
9e390558 AM |
6460 | write_insn<big_endian>(p, lis_11 + ha(plt_addr)); |
6461 | p += 4; | |
6462 | write_insn<big_endian>(p, lwz_11_11 + l(plt_addr)); | |
ec661b9d | 6463 | } |
9e390558 AM |
6464 | p += 4; |
6465 | write_insn<big_endian>(p, mtctr_11); | |
6466 | p += 4; | |
407aa07c | 6467 | write_insn<big_endian>(p, bctr); |
ec661b9d AM |
6468 | } |
6469 | } | |
6470 | ||
6471 | // Write out long branch stubs. | |
6472 | typename Branch_stub_entries::const_iterator bs; | |
6473 | for (bs = this->long_branch_stubs_.begin(); | |
6474 | bs != this->long_branch_stubs_.end(); | |
6475 | ++bs) | |
6476 | { | |
32f59844 | 6477 | if (bs->second.save_res_) |
d49044c7 | 6478 | continue; |
32f59844 AM |
6479 | Address off = this->plt_size_ + bs->second.off_; |
6480 | p = oview + off; | |
6481 | Address loc = this->stub_address() + off; | |
ec661b9d AM |
6482 | Address delta = bs->first.dest_ - loc; |
6483 | if (delta + (1 << 25) < 2 << 25) | |
6484 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
6485 | else if (!parameters->options().output_is_position_independent()) | |
6486 | { | |
9e390558 AM |
6487 | write_insn<big_endian>(p, lis_12 + ha(bs->first.dest_)); |
6488 | p += 4; | |
6489 | write_insn<big_endian>(p, addi_12_12 + l(bs->first.dest_)); | |
ec661b9d AM |
6490 | } |
6491 | else | |
6492 | { | |
6493 | delta -= 8; | |
9e390558 AM |
6494 | write_insn<big_endian>(p, mflr_0); |
6495 | p += 4; | |
6496 | write_insn<big_endian>(p, bcl_20_31); | |
6497 | p += 4; | |
6498 | write_insn<big_endian>(p, mflr_12); | |
6499 | p += 4; | |
6500 | write_insn<big_endian>(p, addis_12_12 + ha(delta)); | |
6501 | p += 4; | |
6502 | write_insn<big_endian>(p, addi_12_12 + l(delta)); | |
6503 | p += 4; | |
6504 | write_insn<big_endian>(p, mtlr_0); | |
cf43a2fe | 6505 | } |
9e390558 AM |
6506 | p += 4; |
6507 | write_insn<big_endian>(p, mtctr_12); | |
6508 | p += 4; | |
407aa07c | 6509 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 6510 | } |
ec661b9d | 6511 | } |
d49044c7 AM |
6512 | if (this->need_save_res_) |
6513 | { | |
6514 | p = oview + this->plt_size_ + this->branch_size_; | |
6515 | memcpy (p, this->targ_->savres_section()->contents(), | |
6516 | this->targ_->savres_section()->data_size()); | |
6517 | } | |
ec661b9d AM |
6518 | } |
6519 | ||
6520 | // Write out .glink. | |
6521 | ||
6522 | template<int size, bool big_endian> | |
6523 | void | |
6524 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
6525 | { | |
6526 | const section_size_type off = this->offset(); | |
6527 | const section_size_type oview_size = | |
6528 | convert_to_section_size_type(this->data_size()); | |
6529 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
6530 | unsigned char* p; | |
6531 | ||
6532 | // The base address of the .plt section. | |
6533 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
6534 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 6535 | |
ec661b9d AM |
6536 | if (size == 64) |
6537 | { | |
9055360d | 6538 | if (this->end_branch_table_ != 0) |
b4f7960d | 6539 | { |
9055360d AM |
6540 | // Write pltresolve stub. |
6541 | p = oview; | |
6542 | Address after_bcl = this->address() + 16; | |
6543 | Address pltoff = plt_base - after_bcl; | |
6544 | ||
6545 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 6546 | |
b4f7960d | 6547 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 6548 | { |
9055360d AM |
6549 | write_insn<big_endian>(p, mflr_12), p += 4; |
6550 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6551 | write_insn<big_endian>(p, mflr_11), p += 4; | |
6552 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
6553 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
6554 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
6555 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
6556 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
6557 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6558 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
6559 | } | |
6560 | else | |
6561 | { | |
6562 | write_insn<big_endian>(p, mflr_0), p += 4; | |
6563 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
6564 | write_insn<big_endian>(p, mflr_11), p += 4; | |
7ee7ff70 | 6565 | write_insn<big_endian>(p, std_2_1 + 24), p += 4; |
9055360d AM |
6566 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; |
6567 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
6568 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
6569 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
6570 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
6571 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
6572 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
6573 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
6574 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
6575 | } | |
407aa07c | 6576 | write_insn<big_endian>(p, bctr), p += 4; |
9e390558 | 6577 | gold_assert(p == oview + this->pltresolve_size()); |
9055360d AM |
6578 | |
6579 | // Write lazy link call stubs. | |
6580 | uint32_t indx = 0; | |
6581 | while (p < oview + this->end_branch_table_) | |
6582 | { | |
6583 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 6584 | { |
9055360d AM |
6585 | if (indx < 0x8000) |
6586 | { | |
6587 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
6588 | } | |
6589 | else | |
6590 | { | |
bbec1a5d | 6591 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
6592 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
6593 | } | |
b4f7960d | 6594 | } |
9055360d AM |
6595 | uint32_t branch_off = 8 - (p - oview); |
6596 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
6597 | indx++; | |
cf43a2fe | 6598 | } |
9055360d AM |
6599 | } |
6600 | ||
6601 | Address plt_base = this->targ_->plt_section()->address(); | |
6602 | Address iplt_base = invalid_address; | |
9e390558 | 6603 | unsigned int global_entry_off = this->global_entry_off(); |
9055360d AM |
6604 | Address global_entry_base = this->address() + global_entry_off; |
6605 | typename Global_entry_stub_entries::const_iterator ge; | |
6606 | for (ge = this->global_entry_stubs_.begin(); | |
6607 | ge != this->global_entry_stubs_.end(); | |
6608 | ++ge) | |
6609 | { | |
6610 | p = oview + global_entry_off + ge->second; | |
6611 | Address plt_addr = ge->first->plt_offset(); | |
6612 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
6613 | && ge->first->can_use_relative_reloc(false)) | |
6614 | { | |
6615 | if (iplt_base == invalid_address) | |
6616 | iplt_base = this->targ_->iplt_section()->address(); | |
6617 | plt_addr += iplt_base; | |
6618 | } | |
6619 | else | |
6620 | plt_addr += plt_base; | |
6621 | Address my_addr = global_entry_base + ge->second; | |
6622 | Address off = plt_addr - my_addr; | |
6623 | ||
6624 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
f073a3e8 | 6625 | gold_error(_("linkage table error against `%s'"), |
9055360d AM |
6626 | ge->first->demangled_name().c_str()); |
6627 | ||
6628 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
6629 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
6630 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
407aa07c | 6631 | write_insn<big_endian>(p, bctr); |
cf43a2fe AM |
6632 | } |
6633 | } | |
6634 | else | |
6635 | { | |
ec661b9d AM |
6636 | const Output_data_got_powerpc<size, big_endian>* got |
6637 | = this->targ_->got_section(); | |
dd93cd0a AM |
6638 | // The address of _GLOBAL_OFFSET_TABLE_. |
6639 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 6640 | |
cf43a2fe | 6641 | // Write out pltresolve branch table. |
ec661b9d | 6642 | p = oview; |
9e390558 | 6643 | unsigned int the_end = oview_size - this->pltresolve_size(); |
c9269dff | 6644 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
6645 | while (p < end_p - 8 * 4) |
6646 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
6647 | while (p < end_p) | |
6648 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 6649 | |
cf43a2fe | 6650 | // Write out pltresolve call stub. |
9e390558 | 6651 | end_p = oview + oview_size; |
cf43a2fe | 6652 | if (parameters->options().output_is_position_independent()) |
42cacb20 | 6653 | { |
ec661b9d | 6654 | Address res0_off = 0; |
dd93cd0a AM |
6655 | Address after_bcl_off = the_end + 12; |
6656 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe | 6657 | |
9e390558 AM |
6658 | write_insn<big_endian>(p, addis_11_11 + ha(bcl_res0)); |
6659 | p += 4; | |
6660 | write_insn<big_endian>(p, mflr_0); | |
6661 | p += 4; | |
6662 | write_insn<big_endian>(p, bcl_20_31); | |
6663 | p += 4; | |
6664 | write_insn<big_endian>(p, addi_11_11 + l(bcl_res0)); | |
6665 | p += 4; | |
6666 | write_insn<big_endian>(p, mflr_12); | |
6667 | p += 4; | |
6668 | write_insn<big_endian>(p, mtlr_0); | |
6669 | p += 4; | |
6670 | write_insn<big_endian>(p, sub_11_11_12); | |
6671 | p += 4; | |
cf43a2fe | 6672 | |
dd93cd0a | 6673 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe | 6674 | |
9e390558 AM |
6675 | write_insn<big_endian>(p, addis_12_12 + ha(got_bcl)); |
6676 | p += 4; | |
cf43a2fe AM |
6677 | if (ha(got_bcl) == ha(got_bcl + 4)) |
6678 | { | |
9e390558 AM |
6679 | write_insn<big_endian>(p, lwz_0_12 + l(got_bcl)); |
6680 | p += 4; | |
6681 | write_insn<big_endian>(p, lwz_12_12 + l(got_bcl + 4)); | |
cf43a2fe AM |
6682 | } |
6683 | else | |
6684 | { | |
9e390558 AM |
6685 | write_insn<big_endian>(p, lwzu_0_12 + l(got_bcl)); |
6686 | p += 4; | |
6687 | write_insn<big_endian>(p, lwz_12_12 + 4); | |
cf43a2fe | 6688 | } |
9e390558 AM |
6689 | p += 4; |
6690 | write_insn<big_endian>(p, mtctr_0); | |
6691 | p += 4; | |
6692 | write_insn<big_endian>(p, add_0_11_11); | |
6693 | p += 4; | |
6694 | write_insn<big_endian>(p, add_11_0_11); | |
42cacb20 | 6695 | } |
cf43a2fe | 6696 | else |
42cacb20 | 6697 | { |
ec661b9d | 6698 | Address res0 = this->address(); |
cf43a2fe | 6699 | |
9e390558 AM |
6700 | write_insn<big_endian>(p, lis_12 + ha(g_o_t + 4)); |
6701 | p += 4; | |
6702 | write_insn<big_endian>(p, addis_11_11 + ha(-res0)); | |
6703 | p += 4; | |
cf43a2fe | 6704 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 6705 | write_insn<big_endian>(p, lwz_0_12 + l(g_o_t + 4)); |
cf43a2fe | 6706 | else |
9e390558 AM |
6707 | write_insn<big_endian>(p, lwzu_0_12 + l(g_o_t + 4)); |
6708 | p += 4; | |
6709 | write_insn<big_endian>(p, addi_11_11 + l(-res0)); | |
6710 | p += 4; | |
6711 | write_insn<big_endian>(p, mtctr_0); | |
6712 | p += 4; | |
6713 | write_insn<big_endian>(p, add_0_11_11); | |
6714 | p += 4; | |
cf43a2fe | 6715 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) |
9e390558 | 6716 | write_insn<big_endian>(p, lwz_12_12 + l(g_o_t + 8)); |
cf43a2fe | 6717 | else |
9e390558 AM |
6718 | write_insn<big_endian>(p, lwz_12_12 + 4); |
6719 | p += 4; | |
6720 | write_insn<big_endian>(p, add_11_0_11); | |
6721 | } | |
6722 | p += 4; | |
407aa07c AM |
6723 | write_insn<big_endian>(p, bctr); |
6724 | p += 4; | |
9e390558 AM |
6725 | while (p < end_p) |
6726 | { | |
6727 | write_insn<big_endian>(p, nop); | |
6728 | p += 4; | |
42cacb20 DE |
6729 | } |
6730 | } | |
6731 | ||
cf43a2fe AM |
6732 | of->write_output_view(off, oview_size, oview); |
6733 | } | |
6734 | ||
f3a0ed29 AM |
6735 | |
6736 | // A class to handle linker generated save/restore functions. | |
6737 | ||
6738 | template<int size, bool big_endian> | |
6739 | class Output_data_save_res : public Output_section_data_build | |
6740 | { | |
6741 | public: | |
6742 | Output_data_save_res(Symbol_table* symtab); | |
6743 | ||
d49044c7 AM |
6744 | const unsigned char* |
6745 | contents() const | |
6746 | { | |
6747 | return contents_; | |
6748 | } | |
6749 | ||
f3a0ed29 AM |
6750 | protected: |
6751 | // Write to a map file. | |
6752 | void | |
6753 | do_print_to_mapfile(Mapfile* mapfile) const | |
6754 | { mapfile->print_output_data(this, _("** save/restore")); } | |
6755 | ||
6756 | void | |
6757 | do_write(Output_file*); | |
6758 | ||
6759 | private: | |
6760 | // The maximum size of save/restore contents. | |
6761 | static const unsigned int savres_max = 218*4; | |
6762 | ||
6763 | void | |
6764 | savres_define(Symbol_table* symtab, | |
6765 | const char *name, | |
6766 | unsigned int lo, unsigned int hi, | |
6767 | unsigned char* write_ent(unsigned char*, int), | |
6768 | unsigned char* write_tail(unsigned char*, int)); | |
6769 | ||
6770 | unsigned char *contents_; | |
6771 | }; | |
6772 | ||
6773 | template<bool big_endian> | |
6774 | static unsigned char* | |
6775 | savegpr0(unsigned char* p, int r) | |
6776 | { | |
6777 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6778 | write_insn<big_endian>(p, insn); | |
6779 | return p + 4; | |
6780 | } | |
6781 | ||
6782 | template<bool big_endian> | |
6783 | static unsigned char* | |
6784 | savegpr0_tail(unsigned char* p, int r) | |
6785 | { | |
6786 | p = savegpr0<big_endian>(p, r); | |
6787 | uint32_t insn = std_0_1 + 16; | |
6788 | write_insn<big_endian>(p, insn); | |
6789 | p = p + 4; | |
6790 | write_insn<big_endian>(p, blr); | |
6791 | return p + 4; | |
6792 | } | |
6793 | ||
6794 | template<bool big_endian> | |
62fe925a | 6795 | static unsigned char* |
f3a0ed29 AM |
6796 | restgpr0(unsigned char* p, int r) |
6797 | { | |
6798 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6799 | write_insn<big_endian>(p, insn); | |
6800 | return p + 4; | |
6801 | } | |
6802 | ||
6803 | template<bool big_endian> | |
62fe925a | 6804 | static unsigned char* |
f3a0ed29 AM |
6805 | restgpr0_tail(unsigned char* p, int r) |
6806 | { | |
6807 | uint32_t insn = ld_0_1 + 16; | |
6808 | write_insn<big_endian>(p, insn); | |
6809 | p = p + 4; | |
6810 | p = restgpr0<big_endian>(p, r); | |
6811 | write_insn<big_endian>(p, mtlr_0); | |
6812 | p = p + 4; | |
6813 | if (r == 29) | |
6814 | { | |
6815 | p = restgpr0<big_endian>(p, 30); | |
6816 | p = restgpr0<big_endian>(p, 31); | |
6817 | } | |
6818 | write_insn<big_endian>(p, blr); | |
6819 | return p + 4; | |
6820 | } | |
6821 | ||
6822 | template<bool big_endian> | |
62fe925a | 6823 | static unsigned char* |
f3a0ed29 AM |
6824 | savegpr1(unsigned char* p, int r) |
6825 | { | |
6826 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6827 | write_insn<big_endian>(p, insn); | |
6828 | return p + 4; | |
6829 | } | |
6830 | ||
6831 | template<bool big_endian> | |
62fe925a | 6832 | static unsigned char* |
f3a0ed29 AM |
6833 | savegpr1_tail(unsigned char* p, int r) |
6834 | { | |
6835 | p = savegpr1<big_endian>(p, r); | |
6836 | write_insn<big_endian>(p, blr); | |
6837 | return p + 4; | |
6838 | } | |
6839 | ||
6840 | template<bool big_endian> | |
62fe925a | 6841 | static unsigned char* |
f3a0ed29 AM |
6842 | restgpr1(unsigned char* p, int r) |
6843 | { | |
6844 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6845 | write_insn<big_endian>(p, insn); | |
6846 | return p + 4; | |
6847 | } | |
6848 | ||
6849 | template<bool big_endian> | |
62fe925a | 6850 | static unsigned char* |
f3a0ed29 AM |
6851 | restgpr1_tail(unsigned char* p, int r) |
6852 | { | |
6853 | p = restgpr1<big_endian>(p, r); | |
6854 | write_insn<big_endian>(p, blr); | |
6855 | return p + 4; | |
6856 | } | |
6857 | ||
6858 | template<bool big_endian> | |
62fe925a | 6859 | static unsigned char* |
f3a0ed29 AM |
6860 | savefpr(unsigned char* p, int r) |
6861 | { | |
6862 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6863 | write_insn<big_endian>(p, insn); | |
6864 | return p + 4; | |
6865 | } | |
6866 | ||
6867 | template<bool big_endian> | |
62fe925a | 6868 | static unsigned char* |
f3a0ed29 AM |
6869 | savefpr0_tail(unsigned char* p, int r) |
6870 | { | |
6871 | p = savefpr<big_endian>(p, r); | |
6872 | write_insn<big_endian>(p, std_0_1 + 16); | |
6873 | p = p + 4; | |
6874 | write_insn<big_endian>(p, blr); | |
6875 | return p + 4; | |
6876 | } | |
6877 | ||
6878 | template<bool big_endian> | |
62fe925a | 6879 | static unsigned char* |
f3a0ed29 AM |
6880 | restfpr(unsigned char* p, int r) |
6881 | { | |
6882 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
6883 | write_insn<big_endian>(p, insn); | |
6884 | return p + 4; | |
6885 | } | |
6886 | ||
6887 | template<bool big_endian> | |
62fe925a | 6888 | static unsigned char* |
f3a0ed29 AM |
6889 | restfpr0_tail(unsigned char* p, int r) |
6890 | { | |
6891 | write_insn<big_endian>(p, ld_0_1 + 16); | |
6892 | p = p + 4; | |
6893 | p = restfpr<big_endian>(p, r); | |
6894 | write_insn<big_endian>(p, mtlr_0); | |
6895 | p = p + 4; | |
6896 | if (r == 29) | |
6897 | { | |
6898 | p = restfpr<big_endian>(p, 30); | |
6899 | p = restfpr<big_endian>(p, 31); | |
6900 | } | |
6901 | write_insn<big_endian>(p, blr); | |
6902 | return p + 4; | |
6903 | } | |
6904 | ||
6905 | template<bool big_endian> | |
62fe925a | 6906 | static unsigned char* |
f3a0ed29 AM |
6907 | savefpr1_tail(unsigned char* p, int r) |
6908 | { | |
6909 | p = savefpr<big_endian>(p, r); | |
6910 | write_insn<big_endian>(p, blr); | |
6911 | return p + 4; | |
6912 | } | |
6913 | ||
6914 | template<bool big_endian> | |
62fe925a | 6915 | static unsigned char* |
f3a0ed29 AM |
6916 | restfpr1_tail(unsigned char* p, int r) |
6917 | { | |
6918 | p = restfpr<big_endian>(p, r); | |
6919 | write_insn<big_endian>(p, blr); | |
6920 | return p + 4; | |
6921 | } | |
6922 | ||
6923 | template<bool big_endian> | |
62fe925a | 6924 | static unsigned char* |
f3a0ed29 AM |
6925 | savevr(unsigned char* p, int r) |
6926 | { | |
6927 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
6928 | write_insn<big_endian>(p, insn); | |
6929 | p = p + 4; | |
6930 | insn = stvx_0_12_0 + (r << 21); | |
6931 | write_insn<big_endian>(p, insn); | |
6932 | return p + 4; | |
6933 | } | |
6934 | ||
6935 | template<bool big_endian> | |
62fe925a | 6936 | static unsigned char* |
f3a0ed29 AM |
6937 | savevr_tail(unsigned char* p, int r) |
6938 | { | |
6939 | p = savevr<big_endian>(p, r); | |
6940 | write_insn<big_endian>(p, blr); | |
6941 | return p + 4; | |
6942 | } | |
6943 | ||
6944 | template<bool big_endian> | |
62fe925a | 6945 | static unsigned char* |
f3a0ed29 AM |
6946 | restvr(unsigned char* p, int r) |
6947 | { | |
6948 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
6949 | write_insn<big_endian>(p, insn); | |
6950 | p = p + 4; | |
6951 | insn = lvx_0_12_0 + (r << 21); | |
6952 | write_insn<big_endian>(p, insn); | |
6953 | return p + 4; | |
6954 | } | |
6955 | ||
6956 | template<bool big_endian> | |
62fe925a | 6957 | static unsigned char* |
f3a0ed29 AM |
6958 | restvr_tail(unsigned char* p, int r) |
6959 | { | |
6960 | p = restvr<big_endian>(p, r); | |
6961 | write_insn<big_endian>(p, blr); | |
6962 | return p + 4; | |
6963 | } | |
6964 | ||
6965 | ||
6966 | template<int size, bool big_endian> | |
6967 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
6968 | Symbol_table* symtab) | |
6969 | : Output_section_data_build(4), | |
6970 | contents_(NULL) | |
6971 | { | |
6972 | this->savres_define(symtab, | |
6973 | "_savegpr0_", 14, 31, | |
6974 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
6975 | this->savres_define(symtab, | |
6976 | "_restgpr0_", 14, 29, | |
6977 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6978 | this->savres_define(symtab, | |
6979 | "_restgpr0_", 30, 31, | |
6980 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
6981 | this->savres_define(symtab, | |
6982 | "_savegpr1_", 14, 31, | |
6983 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
6984 | this->savres_define(symtab, | |
6985 | "_restgpr1_", 14, 31, | |
6986 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
6987 | this->savres_define(symtab, | |
6988 | "_savefpr_", 14, 31, | |
6989 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
6990 | this->savres_define(symtab, | |
6991 | "_restfpr_", 14, 29, | |
6992 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6993 | this->savres_define(symtab, | |
6994 | "_restfpr_", 30, 31, | |
6995 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
6996 | this->savres_define(symtab, | |
6997 | "._savef", 14, 31, | |
6998 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
6999 | this->savres_define(symtab, | |
7000 | "._restf", 14, 31, | |
7001 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
7002 | this->savres_define(symtab, | |
7003 | "_savevr_", 20, 31, | |
7004 | savevr<big_endian>, savevr_tail<big_endian>); | |
7005 | this->savres_define(symtab, | |
7006 | "_restvr_", 20, 31, | |
7007 | restvr<big_endian>, restvr_tail<big_endian>); | |
7008 | } | |
7009 | ||
7010 | template<int size, bool big_endian> | |
7011 | void | |
7012 | Output_data_save_res<size, big_endian>::savres_define( | |
7013 | Symbol_table* symtab, | |
7014 | const char *name, | |
7015 | unsigned int lo, unsigned int hi, | |
7016 | unsigned char* write_ent(unsigned char*, int), | |
7017 | unsigned char* write_tail(unsigned char*, int)) | |
7018 | { | |
7019 | size_t len = strlen(name); | |
7020 | bool writing = false; | |
7021 | char sym[16]; | |
7022 | ||
7023 | memcpy(sym, name, len); | |
7024 | sym[len + 2] = 0; | |
7025 | ||
7026 | for (unsigned int i = lo; i <= hi; i++) | |
7027 | { | |
7028 | sym[len + 0] = i / 10 + '0'; | |
7029 | sym[len + 1] = i % 10 + '0'; | |
7030 | Symbol* gsym = symtab->lookup(sym); | |
7031 | bool refd = gsym != NULL && gsym->is_undefined(); | |
7032 | writing = writing || refd; | |
7033 | if (writing) | |
7034 | { | |
7035 | if (this->contents_ == NULL) | |
7036 | this->contents_ = new unsigned char[this->savres_max]; | |
7037 | ||
ec661b9d | 7038 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
7039 | unsigned char* p = this->contents_ + value; |
7040 | if (i != hi) | |
7041 | p = write_ent(p, i); | |
7042 | else | |
7043 | p = write_tail(p, i); | |
ec661b9d | 7044 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
7045 | this->set_current_data_size(cur_size); |
7046 | if (refd) | |
7047 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
7048 | this, value, cur_size - value, | |
7049 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
7050 | elfcpp::STV_HIDDEN, 0, false, false); | |
7051 | } | |
7052 | } | |
7053 | } | |
7054 | ||
7055 | // Write out save/restore. | |
7056 | ||
7057 | template<int size, bool big_endian> | |
7058 | void | |
7059 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
7060 | { | |
ec661b9d | 7061 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
7062 | const section_size_type oview_size = |
7063 | convert_to_section_size_type(this->data_size()); | |
7064 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
7065 | memcpy(oview, this->contents_, oview_size); | |
7066 | of->write_output_view(off, oview_size, oview); | |
7067 | } | |
7068 | ||
7069 | ||
cf43a2fe | 7070 | // Create the glink section. |
42cacb20 | 7071 | |
cf43a2fe AM |
7072 | template<int size, bool big_endian> |
7073 | void | |
7074 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
7075 | { | |
7076 | if (this->glink_ == NULL) | |
7077 | { | |
7078 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 7079 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
7080 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
7081 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
7082 | this->glink_, ORDER_TEXT, false); | |
7083 | } | |
42cacb20 DE |
7084 | } |
7085 | ||
7086 | // Create a PLT entry for a global symbol. | |
7087 | ||
7088 | template<int size, bool big_endian> | |
7089 | void | |
ec661b9d AM |
7090 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
7091 | Layout* layout, | |
7092 | Symbol* gsym) | |
42cacb20 | 7093 | { |
e5d5f5ed AM |
7094 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
7095 | && gsym->can_use_relative_reloc(false)) | |
7096 | { | |
7097 | if (this->iplt_ == NULL) | |
40b469d7 | 7098 | this->make_iplt_section(symtab, layout); |
03e25981 | 7099 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
7100 | } |
7101 | else | |
7102 | { | |
7103 | if (this->plt_ == NULL) | |
40b469d7 | 7104 | this->make_plt_section(symtab, layout); |
03e25981 | 7105 | this->plt_->add_entry(gsym); |
e5d5f5ed | 7106 | } |
e5d5f5ed | 7107 | } |
42cacb20 | 7108 | |
2d7ad24e AM |
7109 | // Make a PLT entry for a local symbol. |
7110 | ||
7111 | template<int size, bool big_endian> | |
7112 | void | |
7113 | Target_powerpc<size, big_endian>::make_local_plt_entry( | |
7114 | Layout* layout, | |
7115 | Sized_relobj_file<size, big_endian>* relobj, | |
7116 | unsigned int r_sym) | |
7117 | { | |
7118 | if (this->lplt_ == NULL) | |
7119 | this->make_lplt_section(layout); | |
7120 | this->lplt_->add_local_entry(relobj, r_sym); | |
7121 | } | |
7122 | ||
e5d5f5ed | 7123 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 7124 | |
e5d5f5ed AM |
7125 | template<int size, bool big_endian> |
7126 | void | |
7127 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 7128 | Symbol_table* symtab, |
e5d5f5ed | 7129 | Layout* layout, |
ec661b9d AM |
7130 | Sized_relobj_file<size, big_endian>* relobj, |
7131 | unsigned int r_sym) | |
e5d5f5ed AM |
7132 | { |
7133 | if (this->iplt_ == NULL) | |
40b469d7 | 7134 | this->make_iplt_section(symtab, layout); |
03e25981 | 7135 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
7136 | } |
7137 | ||
0e70b911 CC |
7138 | // Return the number of entries in the PLT. |
7139 | ||
7140 | template<int size, bool big_endian> | |
7141 | unsigned int | |
7142 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
7143 | { | |
7144 | if (this->plt_ == NULL) | |
7145 | return 0; | |
b3ccdeb5 | 7146 | return this->plt_->entry_count(); |
0e70b911 CC |
7147 | } |
7148 | ||
dd93cd0a | 7149 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
7150 | |
7151 | template<int size, bool big_endian> | |
7152 | unsigned int | |
dd93cd0a | 7153 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
7154 | Symbol_table* symtab, |
7155 | Layout* layout, | |
7156 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 7157 | { |
dd93cd0a | 7158 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
7159 | { |
7160 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
7161 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
7162 | Output_data_got_powerpc<size, big_endian>* got |
7163 | = this->got_section(symtab, layout); | |
7164 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
7165 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
7166 | got_offset, 0); | |
dd93cd0a | 7167 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 7168 | } |
dd93cd0a | 7169 | return this->tlsld_got_offset_; |
42cacb20 DE |
7170 | } |
7171 | ||
95a2c8d6 RS |
7172 | // Get the Reference_flags for a particular relocation. |
7173 | ||
7174 | template<int size, bool big_endian> | |
7175 | int | |
88b8e639 AM |
7176 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
7177 | unsigned int r_type, | |
7178 | const Target_powerpc* target) | |
95a2c8d6 | 7179 | { |
88b8e639 AM |
7180 | int ref = 0; |
7181 | ||
95a2c8d6 RS |
7182 | switch (r_type) |
7183 | { | |
7184 | case elfcpp::R_POWERPC_NONE: | |
7185 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7186 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7187 | case elfcpp::R_PPC64_TOC: | |
7188 | // No symbol reference. | |
88b8e639 | 7189 | break; |
95a2c8d6 | 7190 | |
dd93cd0a AM |
7191 | case elfcpp::R_PPC64_ADDR64: |
7192 | case elfcpp::R_PPC64_UADDR64: | |
7193 | case elfcpp::R_POWERPC_ADDR32: | |
7194 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 7195 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 7196 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
7197 | case elfcpp::R_POWERPC_ADDR16_LO: |
7198 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7199 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
7200 | ref = Symbol::ABSOLUTE_REF; |
7201 | break; | |
95a2c8d6 | 7202 | |
dd93cd0a AM |
7203 | case elfcpp::R_POWERPC_ADDR24: |
7204 | case elfcpp::R_POWERPC_ADDR14: | |
7205 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7206 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
7207 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
7208 | break; | |
dd93cd0a | 7209 | |
e5d5f5ed | 7210 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 7211 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 7212 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
7213 | case elfcpp::R_POWERPC_REL16: |
7214 | case elfcpp::R_POWERPC_REL16_LO: | |
7215 | case elfcpp::R_POWERPC_REL16_HI: | |
7216 | case elfcpp::R_POWERPC_REL16_HA: | |
c432bbba AM |
7217 | case elfcpp::R_PPC64_REL16_HIGH: |
7218 | case elfcpp::R_PPC64_REL16_HIGHA: | |
7219 | case elfcpp::R_PPC64_REL16_HIGHER: | |
7220 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
7221 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
7222 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
e4dff765 AM |
7223 | case elfcpp::R_PPC64_PCREL34: |
7224 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7225 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7226 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7227 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
7228 | case elfcpp::R_PPC64_PCREL28: | |
88b8e639 AM |
7229 | ref = Symbol::RELATIVE_REF; |
7230 | break; | |
95a2c8d6 | 7231 | |
32f59844 AM |
7232 | case elfcpp::R_PPC64_REL24_NOTOC: |
7233 | if (size == 32) | |
7234 | break; | |
7235 | // Fall through. | |
dd93cd0a | 7236 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 7237 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
7238 | case elfcpp::R_POWERPC_REL14: |
7239 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7240 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
7241 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
7242 | break; | |
95a2c8d6 RS |
7243 | |
7244 | case elfcpp::R_POWERPC_GOT16: | |
7245 | case elfcpp::R_POWERPC_GOT16_LO: | |
7246 | case elfcpp::R_POWERPC_GOT16_HI: | |
7247 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
7248 | case elfcpp::R_PPC64_GOT16_DS: |
7249 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7250 | case elfcpp::R_PPC64_GOT_PCREL34: |
95a2c8d6 RS |
7251 | case elfcpp::R_PPC64_TOC16: |
7252 | case elfcpp::R_PPC64_TOC16_LO: | |
7253 | case elfcpp::R_PPC64_TOC16_HI: | |
7254 | case elfcpp::R_PPC64_TOC16_HA: | |
7255 | case elfcpp::R_PPC64_TOC16_DS: | |
7256 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
08be3224 AM |
7257 | case elfcpp::R_POWERPC_PLT16_LO: |
7258 | case elfcpp::R_POWERPC_PLT16_HI: | |
7259 | case elfcpp::R_POWERPC_PLT16_HA: | |
7260 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
e4dff765 AM |
7261 | case elfcpp::R_PPC64_PLT_PCREL34: |
7262 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
32d849b3 | 7263 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 7264 | break; |
95a2c8d6 RS |
7265 | |
7266 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7267 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
7268 | ref = Symbol::TLS_REF; |
7269 | break; | |
95a2c8d6 RS |
7270 | |
7271 | case elfcpp::R_POWERPC_COPY: | |
7272 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7273 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7274 | case elfcpp::R_POWERPC_RELATIVE: | |
7275 | case elfcpp::R_POWERPC_DTPMOD: | |
7276 | default: | |
7277 | // Not expected. We will give an error later. | |
88b8e639 | 7278 | break; |
95a2c8d6 | 7279 | } |
88b8e639 AM |
7280 | |
7281 | if (size == 64 && target->abiversion() < 2) | |
7282 | ref |= Symbol::FUNC_DESC_ABI; | |
7283 | return ref; | |
95a2c8d6 RS |
7284 | } |
7285 | ||
42cacb20 DE |
7286 | // Report an unsupported relocation against a local symbol. |
7287 | ||
7288 | template<int size, bool big_endian> | |
7289 | void | |
7290 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
7291 | Sized_relobj_file<size, big_endian>* object, |
7292 | unsigned int r_type) | |
42cacb20 DE |
7293 | { |
7294 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
7295 | object->name().c_str(), r_type); | |
7296 | } | |
7297 | ||
7298 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
7299 | // dynamic linker does not support it, issue an error. | |
7300 | ||
7301 | template<int size, bool big_endian> | |
7302 | void | |
7303 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
7304 | unsigned int r_type) | |
7305 | { | |
7306 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
7307 | ||
7308 | // These are the relocation types supported by glibc for both 32-bit | |
7309 | // and 64-bit powerpc. | |
7310 | switch (r_type) | |
7311 | { | |
3ea0a085 | 7312 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
7313 | case elfcpp::R_POWERPC_RELATIVE: |
7314 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7315 | case elfcpp::R_POWERPC_DTPMOD: | |
7316 | case elfcpp::R_POWERPC_DTPREL: | |
7317 | case elfcpp::R_POWERPC_TPREL: | |
7318 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7319 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 7320 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 7321 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 7322 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 7323 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
7324 | case elfcpp::R_POWERPC_ADDR16: |
7325 | case elfcpp::R_POWERPC_UADDR16: | |
7326 | case elfcpp::R_POWERPC_ADDR16_LO: | |
7327 | case elfcpp::R_POWERPC_ADDR16_HI: | |
7328 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7329 | case elfcpp::R_POWERPC_ADDR14: | |
7330 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7331 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7332 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 7333 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
7334 | case elfcpp::R_POWERPC_TPREL16: |
7335 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7336 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7337 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
7338 | return; |
7339 | ||
7340 | default: | |
7341 | break; | |
7342 | } | |
7343 | ||
7344 | if (size == 64) | |
7345 | { | |
7346 | switch (r_type) | |
7347 | { | |
7348 | // These are the relocation types supported only on 64-bit. | |
7349 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 7350 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 7351 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 7352 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 7353 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
7354 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7355 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
7356 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7357 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7358 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7359 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 7360 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
7361 | case elfcpp::R_POWERPC_ADDR30: |
7362 | case elfcpp::R_PPC64_TPREL16_DS: | |
7363 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7364 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7365 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
7366 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
7367 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7368 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7369 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
7370 | return; |
7371 | ||
7372 | default: | |
7373 | break; | |
7374 | } | |
7375 | } | |
7376 | else | |
7377 | { | |
7378 | switch (r_type) | |
7379 | { | |
7380 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
7381 | // ??? glibc ld.so doesn't need to support these. |
7382 | case elfcpp::R_POWERPC_DTPREL16: | |
7383 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7384 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7385 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7386 | return; | |
42cacb20 DE |
7387 | |
7388 | default: | |
7389 | break; | |
7390 | } | |
7391 | } | |
7392 | ||
7393 | // This prevents us from issuing more than one error per reloc | |
7394 | // section. But we can still wind up issuing more than one | |
7395 | // error per object file. | |
7396 | if (this->issued_non_pic_error_) | |
7397 | return; | |
33aea2fd | 7398 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
7399 | object->error(_("requires unsupported dynamic reloc; " |
7400 | "recompile with -fPIC")); | |
7401 | this->issued_non_pic_error_ = true; | |
7402 | return; | |
7403 | } | |
7404 | ||
e5d5f5ed AM |
7405 | // Return whether we need to make a PLT entry for a relocation of the |
7406 | // given type against a STT_GNU_IFUNC symbol. | |
7407 | ||
7408 | template<int size, bool big_endian> | |
7409 | bool | |
7410 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 7411 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 7412 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
7413 | unsigned int r_type, |
7414 | bool report_err) | |
e5d5f5ed | 7415 | { |
c9824451 AM |
7416 | // In non-pic code any reference will resolve to the plt call stub |
7417 | // for the ifunc symbol. | |
9055360d AM |
7418 | if ((size == 32 || target->abiversion() >= 2) |
7419 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
7420 | return true; |
7421 | ||
e5d5f5ed AM |
7422 | switch (r_type) |
7423 | { | |
b3ccdeb5 | 7424 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
7425 | case elfcpp::R_POWERPC_ADDR32: |
7426 | case elfcpp::R_POWERPC_UADDR32: | |
7427 | if (size == 32) | |
b3ccdeb5 | 7428 | return false; |
e5d5f5ed AM |
7429 | break; |
7430 | ||
7431 | case elfcpp::R_PPC64_ADDR64: | |
7432 | case elfcpp::R_PPC64_UADDR64: | |
7433 | if (size == 64) | |
b3ccdeb5 | 7434 | return false; |
e5d5f5ed AM |
7435 | break; |
7436 | ||
b3ccdeb5 | 7437 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
7438 | case elfcpp::R_POWERPC_GOT16: |
7439 | case elfcpp::R_POWERPC_GOT16_LO: | |
7440 | case elfcpp::R_POWERPC_GOT16_HI: | |
7441 | case elfcpp::R_POWERPC_GOT16_HA: | |
7442 | case elfcpp::R_PPC64_GOT16_DS: | |
7443 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
e4dff765 | 7444 | case elfcpp::R_PPC64_GOT_PCREL34: |
b3ccdeb5 | 7445 | return false; |
e5d5f5ed | 7446 | |
08be3224 AM |
7447 | // PLT relocs are OK and need a PLT entry. |
7448 | case elfcpp::R_POWERPC_PLT16_LO: | |
7449 | case elfcpp::R_POWERPC_PLT16_HI: | |
7450 | case elfcpp::R_POWERPC_PLT16_HA: | |
7451 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
23cedd1d AM |
7452 | case elfcpp::R_POWERPC_PLTSEQ: |
7453 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7454 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7455 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7456 | case elfcpp::R_PPC64_PLT_PCREL34: |
7457 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
08be3224 AM |
7458 | return true; |
7459 | break; | |
7460 | ||
b3ccdeb5 | 7461 | // Function calls are good, and these do need a PLT entry. |
32f59844 AM |
7462 | case elfcpp::R_PPC64_REL24_NOTOC: |
7463 | if (size == 32) | |
7464 | break; | |
7465 | // Fall through. | |
e5d5f5ed AM |
7466 | case elfcpp::R_POWERPC_ADDR24: |
7467 | case elfcpp::R_POWERPC_ADDR14: | |
7468 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7469 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7470 | case elfcpp::R_POWERPC_REL24: | |
7471 | case elfcpp::R_PPC_PLTREL24: | |
7472 | case elfcpp::R_POWERPC_REL14: | |
7473 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7474 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7475 | return true; | |
7476 | ||
7477 | default: | |
7478 | break; | |
7479 | } | |
7480 | ||
7481 | // Anything else is a problem. | |
7482 | // If we are building a static executable, the libc startup function | |
7483 | // responsible for applying indirect function relocations is going | |
7484 | // to complain about the reloc type. | |
7485 | // If we are building a dynamic executable, we will have a text | |
7486 | // relocation. The dynamic loader will set the text segment | |
7487 | // writable and non-executable to apply text relocations. So we'll | |
7488 | // segfault when trying to run the indirection function to resolve | |
7489 | // the reloc. | |
b3ccdeb5 AM |
7490 | if (report_err) |
7491 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
7492 | object->name().c_str(), r_type); |
7493 | return false; | |
7494 | } | |
7495 | ||
5edad15d AM |
7496 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
7497 | // reloc. | |
7498 | ||
7499 | static bool | |
7500 | ok_lo_toc_insn(uint32_t insn, unsigned int r_type) | |
7501 | { | |
7502 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ | |
7503 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7504 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7505 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7506 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7507 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7508 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7509 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7510 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7511 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7512 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7513 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7514 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7515 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7516 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7517 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ | |
7518 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
7519 | /* Exclude lfqu by testing reloc. If relocs are ever | |
7520 | defined for the reduced D field in psq_lu then those | |
7521 | will need testing too. */ | |
7522 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7523 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7524 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
7525 | && (insn & 1) == 0) | |
7526 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
7527 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
7528 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
7529 | && r_type != elfcpp::R_PPC64_TOC16_LO | |
7530 | && r_type != elfcpp::R_POWERPC_GOT16_LO) | |
7531 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
7532 | && (insn & 1) == 0)); | |
7533 | } | |
7534 | ||
42cacb20 DE |
7535 | // Scan a relocation for a local symbol. |
7536 | ||
7537 | template<int size, bool big_endian> | |
7538 | inline void | |
7539 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
7540 | Symbol_table* symtab, |
7541 | Layout* layout, | |
7542 | Target_powerpc<size, big_endian>* target, | |
7543 | Sized_relobj_file<size, big_endian>* object, | |
7544 | unsigned int data_shndx, | |
7545 | Output_section* output_section, | |
7546 | const elfcpp::Rela<size, big_endian>& reloc, | |
7547 | unsigned int r_type, | |
e5d5f5ed | 7548 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 7549 | bool is_discarded) |
42cacb20 | 7550 | { |
34e0882b | 7551 | this->maybe_skip_tls_get_addr_call(target, r_type, NULL); |
e3deeb9c AM |
7552 | |
7553 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7554 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7555 | { | |
7556 | this->expect_tls_get_addr_call(); | |
7557 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
7558 | if (tls_type != tls::TLSOPT_NONE) | |
7559 | this->skip_next_tls_get_addr_call(); | |
7560 | } | |
7561 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7562 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7563 | { | |
7564 | this->expect_tls_get_addr_call(); | |
7565 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7566 | if (tls_type != tls::TLSOPT_NONE) | |
7567 | this->skip_next_tls_get_addr_call(); | |
7568 | } | |
7569 | ||
dd93cd0a AM |
7570 | Powerpc_relobj<size, big_endian>* ppc_object |
7571 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
7572 | ||
bfdfa4cd AM |
7573 | if (is_discarded) |
7574 | { | |
7575 | if (size == 64 | |
7576 | && data_shndx == ppc_object->opd_shndx() | |
7577 | && r_type == elfcpp::R_PPC64_ADDR64) | |
7578 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
7579 | return; | |
7580 | } | |
7581 | ||
e5d5f5ed AM |
7582 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
7583 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 7584 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 7585 | { |
ec661b9d AM |
7586 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
7587 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7588 | r_type, r_sym, reloc.get_r_addend()); | |
7589 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 7590 | } |
e5d5f5ed | 7591 | |
42cacb20 DE |
7592 | switch (r_type) |
7593 | { | |
7594 | case elfcpp::R_POWERPC_NONE: | |
7595 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7596 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
7404fe1b | 7597 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 7598 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
7599 | case elfcpp::R_POWERPC_PLTSEQ: |
7600 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
7601 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
7602 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
7603 | case elfcpp::R_PPC64_PCREL_OPT: |
7604 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
7605 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
7606 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
7607 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
7608 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
7609 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
7610 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
7611 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
7612 | break; | |
7613 | ||
7614 | case elfcpp::R_PPC64_D34: | |
7615 | case elfcpp::R_PPC64_D34_LO: | |
7616 | case elfcpp::R_PPC64_D34_HI30: | |
7617 | case elfcpp::R_PPC64_D34_HA30: | |
7618 | case elfcpp::R_PPC64_D28: | |
7619 | case elfcpp::R_PPC64_PCREL34: | |
7620 | case elfcpp::R_PPC64_PCREL28: | |
7621 | target->set_powerxx_stubs(); | |
dd93cd0a AM |
7622 | break; |
7623 | ||
7624 | case elfcpp::R_PPC64_TOC: | |
7625 | { | |
7626 | Output_data_got_powerpc<size, big_endian>* got | |
7627 | = target->got_section(symtab, layout); | |
7628 | if (parameters->options().output_is_position_independent()) | |
7629 | { | |
bfdfa4cd AM |
7630 | Address off = reloc.get_r_offset(); |
7631 | if (size == 64 | |
9055360d | 7632 | && target->abiversion() < 2 |
bfdfa4cd AM |
7633 | && data_shndx == ppc_object->opd_shndx() |
7634 | && ppc_object->get_opd_discard(off - 8)) | |
7635 | break; | |
7636 | ||
dd93cd0a | 7637 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 7638 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
7639 | rela_dyn->add_output_section_relative(got->output_section(), |
7640 | elfcpp::R_POWERPC_RELATIVE, | |
7641 | output_section, | |
bfdfa4cd AM |
7642 | object, data_shndx, off, |
7643 | symobj->toc_base_offset()); | |
dd93cd0a AM |
7644 | } |
7645 | } | |
42cacb20 DE |
7646 | break; |
7647 | ||
7648 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 7649 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 7650 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
7651 | case elfcpp::R_POWERPC_UADDR32: |
7652 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 7653 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 7654 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
7655 | case elfcpp::R_POWERPC_ADDR16_HI: |
7656 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 7657 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
7658 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7659 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
7660 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
7661 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7662 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7663 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7664 | case elfcpp::R_PPC64_ADDR16_DS: | |
7665 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
7666 | case elfcpp::R_POWERPC_ADDR14: | |
7667 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7668 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
7669 | // If building a shared library (or a position-independent |
7670 | // executable), we need to create a dynamic relocation for | |
7671 | // this location. | |
c9824451 | 7672 | if (parameters->options().output_is_position_independent() |
9055360d | 7673 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 7674 | { |
b3ccdeb5 AM |
7675 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
7676 | is_ifunc); | |
1f98a074 | 7677 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
7678 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
7679 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 7680 | { |
b3ccdeb5 AM |
7681 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
7682 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 7683 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
7684 | output_section, data_shndx, |
7685 | reloc.get_r_offset(), | |
c9824451 | 7686 | reloc.get_r_addend(), false); |
2e702c99 | 7687 | } |
1f98a074 | 7688 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 7689 | { |
dd93cd0a | 7690 | check_non_pic(object, r_type); |
dd93cd0a AM |
7691 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
7692 | data_shndx, reloc.get_r_offset(), | |
7693 | reloc.get_r_addend()); | |
2e702c99 | 7694 | } |
1f98a074 AM |
7695 | else |
7696 | { | |
7697 | gold_assert(lsym.get_st_value() == 0); | |
7698 | unsigned int shndx = lsym.get_st_shndx(); | |
7699 | bool is_ordinary; | |
7700 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
7701 | &is_ordinary); | |
7702 | if (!is_ordinary) | |
7703 | object->error(_("section symbol %u has bad shndx %u"), | |
7704 | r_sym, shndx); | |
7705 | else | |
7706 | rela_dyn->add_local_section(object, shndx, r_type, | |
7707 | output_section, data_shndx, | |
7708 | reloc.get_r_offset()); | |
7709 | } | |
2e702c99 | 7710 | } |
42cacb20 DE |
7711 | break; |
7712 | ||
e4dff765 AM |
7713 | case elfcpp::R_PPC64_PLT_PCREL34: |
7714 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
7715 | target->set_powerxx_stubs(); | |
7716 | // Fall through. | |
2d7ad24e AM |
7717 | case elfcpp::R_POWERPC_PLT16_LO: |
7718 | case elfcpp::R_POWERPC_PLT16_HI: | |
7719 | case elfcpp::R_POWERPC_PLT16_HA: | |
7720 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
7721 | if (!is_ifunc) | |
7722 | { | |
7723 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7724 | target->make_local_plt_entry(layout, object, r_sym); | |
7725 | } | |
7726 | break; | |
7727 | ||
32f59844 AM |
7728 | case elfcpp::R_PPC64_REL24_NOTOC: |
7729 | if (size == 32) | |
7730 | break; | |
7731 | // Fall through. | |
42cacb20 | 7732 | case elfcpp::R_POWERPC_REL24: |
c9824451 | 7733 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 7734 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
7735 | case elfcpp::R_POWERPC_REL14: |
7736 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7737 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 7738 | if (!is_ifunc) |
0e123f69 AM |
7739 | { |
7740 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7741 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
7742 | r_type, r_sym, reloc.get_r_addend()); | |
7743 | } | |
ec661b9d AM |
7744 | break; |
7745 | ||
7e57d19e AM |
7746 | case elfcpp::R_PPC64_TOCSAVE: |
7747 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
7748 | // caller has already saved r2 and thus a plt call stub need not | |
7749 | // save r2. | |
7750 | if (size == 64 | |
7751 | && target->mark_pltcall(ppc_object, data_shndx, | |
7752 | reloc.get_r_offset() - 4, symtab)) | |
7753 | { | |
7754 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
7755 | unsigned int shndx = lsym.get_st_shndx(); | |
7756 | bool is_ordinary; | |
7757 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
7758 | if (!is_ordinary) | |
7759 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
7760 | r_sym, shndx); | |
7761 | else | |
7762 | target->add_tocsave(ppc_object, shndx, | |
7763 | lsym.get_st_value() + reloc.get_r_addend()); | |
7764 | } | |
7765 | break; | |
7766 | ||
ec661b9d AM |
7767 | case elfcpp::R_PPC64_REL64: |
7768 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 7769 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 7770 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 7771 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 7772 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 7773 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
7774 | case elfcpp::R_PPC64_REL16_HIGH: |
7775 | case elfcpp::R_PPC64_REL16_HIGHA: | |
7776 | case elfcpp::R_PPC64_REL16_HIGHER: | |
7777 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
7778 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
7779 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 7780 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 7781 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 7782 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 7783 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
7784 | case elfcpp::R_PPC64_SECTOFF_DS: |
7785 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7786 | case elfcpp::R_POWERPC_TPREL16: | |
7787 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7788 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 7789 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
7790 | case elfcpp::R_PPC64_TPREL16_DS: |
7791 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
7792 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
7793 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7794 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 7795 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 7796 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 7797 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
7798 | case elfcpp::R_POWERPC_DTPREL16: |
7799 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7800 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7801 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
7802 | case elfcpp::R_PPC64_DTPREL16_DS: |
7803 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
7804 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7805 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7806 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7807 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7808 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7809 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
7810 | case elfcpp::R_PPC64_TLSGD: |
7811 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 7812 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
7813 | break; |
7814 | ||
e4dff765 AM |
7815 | case elfcpp::R_PPC64_GOT_PCREL34: |
7816 | target->set_powerxx_stubs(); | |
7817 | // Fall through. | |
42cacb20 DE |
7818 | case elfcpp::R_POWERPC_GOT16: |
7819 | case elfcpp::R_POWERPC_GOT16_LO: | |
7820 | case elfcpp::R_POWERPC_GOT16_HI: | |
7821 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
7822 | case elfcpp::R_PPC64_GOT16_DS: |
7823 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 7824 | { |
c9269dff | 7825 | // The symbol requires a GOT entry. |
dd93cd0a AM |
7826 | Output_data_got_powerpc<size, big_endian>* got |
7827 | = target->got_section(symtab, layout); | |
7828 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 7829 | |
e5d5f5ed | 7830 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 7831 | { |
b01a4b04 AM |
7832 | if (is_ifunc |
7833 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
7834 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
7835 | else | |
7836 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
7837 | } | |
7838 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
7839 | { | |
7840 | // If we are generating a shared object or a pie, this | |
7841 | // symbol's GOT entry will be set by a dynamic relocation. | |
7842 | unsigned int off; | |
7843 | off = got->add_constant(0); | |
7844 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 7845 | |
b3ccdeb5 AM |
7846 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
7847 | is_ifunc); | |
7848 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
7849 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 7850 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 7851 | got, off, 0, false); |
2e702c99 | 7852 | } |
42cacb20 DE |
7853 | } |
7854 | break; | |
7855 | ||
cf43a2fe AM |
7856 | case elfcpp::R_PPC64_TOC16: |
7857 | case elfcpp::R_PPC64_TOC16_LO: | |
7858 | case elfcpp::R_PPC64_TOC16_HI: | |
7859 | case elfcpp::R_PPC64_TOC16_HA: | |
7860 | case elfcpp::R_PPC64_TOC16_DS: | |
7861 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
7862 | // We need a GOT section. |
7863 | target->got_section(symtab, layout); | |
7864 | break; | |
7865 | ||
dd93cd0a AM |
7866 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7867 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7868 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7869 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7870 | { | |
7871 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
7872 | if (tls_type == tls::TLSOPT_NONE) | |
7873 | { | |
7874 | Output_data_got_powerpc<size, big_endian>* got | |
7875 | = target->got_section(symtab, layout); | |
7876 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
7877 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
7878 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
7879 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
7880 | } |
7881 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7882 | { | |
7883 | // no GOT relocs needed for Local Exec. | |
7884 | } | |
7885 | else | |
7886 | gold_unreachable(); | |
7887 | } | |
42cacb20 DE |
7888 | break; |
7889 | ||
dd93cd0a AM |
7890 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
7891 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7892 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7893 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7894 | { | |
7895 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7896 | if (tls_type == tls::TLSOPT_NONE) | |
7897 | target->tlsld_got_offset(symtab, layout, object); | |
7898 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7899 | { | |
7900 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
7901 | if (parameters->options().emit_relocs()) |
7902 | { | |
7903 | Output_section* os = layout->tls_segment()->first_section(); | |
7904 | gold_assert(os != NULL); | |
7905 | os->set_needs_symtab_index(); | |
7906 | } | |
dd93cd0a AM |
7907 | } |
7908 | else | |
7909 | gold_unreachable(); | |
7910 | } | |
42cacb20 | 7911 | break; |
42cacb20 | 7912 | |
dd93cd0a AM |
7913 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
7914 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7915 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7916 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7917 | { | |
7918 | Output_data_got_powerpc<size, big_endian>* got | |
7919 | = target->got_section(symtab, layout); | |
7920 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 7921 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
7922 | } |
7923 | break; | |
42cacb20 | 7924 | |
dd93cd0a AM |
7925 | case elfcpp::R_POWERPC_GOT_TPREL16: |
7926 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7927 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7928 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7929 | { | |
7930 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
7931 | if (tls_type == tls::TLSOPT_NONE) | |
7932 | { | |
dd93cd0a | 7933 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
7934 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
7935 | { | |
7936 | Output_data_got_powerpc<size, big_endian>* got | |
7937 | = target->got_section(symtab, layout); | |
7938 | unsigned int off = got->add_constant(0); | |
7939 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
7940 | ||
7941 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
7942 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
7943 | elfcpp::R_POWERPC_TPREL, | |
7944 | got, off, 0); | |
7945 | } | |
dd93cd0a AM |
7946 | } |
7947 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7948 | { | |
7949 | // no GOT relocs needed for Local Exec. | |
7950 | } | |
7951 | else | |
7952 | gold_unreachable(); | |
7953 | } | |
7954 | break; | |
7955 | ||
7956 | default: | |
7957 | unsupported_reloc_local(object, r_type); | |
7958 | break; | |
7959 | } | |
d8f5a274 | 7960 | |
5edad15d AM |
7961 | if (size == 64 |
7962 | && parameters->options().toc_optimize()) | |
7963 | { | |
7964 | if (data_shndx == ppc_object->toc_shndx()) | |
7965 | { | |
7966 | bool ok = true; | |
7967 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
7968 | || (is_ifunc && target->abiversion() < 2)) | |
7969 | ok = false; | |
7970 | else if (parameters->options().output_is_position_independent()) | |
7971 | { | |
7972 | if (is_ifunc) | |
7973 | ok = false; | |
7974 | else | |
7975 | { | |
7976 | unsigned int shndx = lsym.get_st_shndx(); | |
7977 | if (shndx >= elfcpp::SHN_LORESERVE | |
7978 | && shndx != elfcpp::SHN_XINDEX) | |
7979 | ok = false; | |
7980 | } | |
7981 | } | |
7982 | if (!ok) | |
7983 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
7984 | } | |
7985 | ||
7986 | enum {no_check, check_lo, check_ha} insn_check; | |
7987 | switch (r_type) | |
7988 | { | |
7989 | default: | |
7990 | insn_check = no_check; | |
7991 | break; | |
7992 | ||
7993 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7994 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7995 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7996 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7997 | case elfcpp::R_POWERPC_GOT16_HA: | |
7998 | case elfcpp::R_PPC64_TOC16_HA: | |
7999 | insn_check = check_ha; | |
8000 | break; | |
8001 | ||
8002 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8003 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8004 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8005 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8006 | case elfcpp::R_POWERPC_GOT16_LO: | |
8007 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8008 | case elfcpp::R_PPC64_TOC16_LO: | |
8009 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8010 | insn_check = check_lo; | |
8011 | break; | |
8012 | } | |
8013 | ||
8014 | section_size_type slen; | |
8015 | const unsigned char* view = NULL; | |
8016 | if (insn_check != no_check) | |
8017 | { | |
8018 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8019 | section_size_type off = | |
8020 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8021 | if (off < slen) | |
8022 | { | |
8023 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8024 | if (insn_check == check_lo | |
8025 | ? !ok_lo_toc_insn(insn, r_type) | |
8026 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8027 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8028 | { | |
8029 | ppc_object->set_no_toc_opt(); | |
8030 | gold_warning(_("%s: toc optimization is not supported " | |
8031 | "for %#08x instruction"), | |
8032 | ppc_object->name().c_str(), insn); | |
8033 | } | |
8034 | } | |
8035 | } | |
8036 | ||
8037 | switch (r_type) | |
8038 | { | |
8039 | default: | |
8040 | break; | |
8041 | case elfcpp::R_PPC64_TOC16: | |
8042 | case elfcpp::R_PPC64_TOC16_LO: | |
8043 | case elfcpp::R_PPC64_TOC16_HI: | |
8044 | case elfcpp::R_PPC64_TOC16_HA: | |
8045 | case elfcpp::R_PPC64_TOC16_DS: | |
8046 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8047 | unsigned int shndx = lsym.get_st_shndx(); | |
8048 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8049 | bool is_ordinary; | |
8050 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8051 | if (is_ordinary && shndx == ppc_object->toc_shndx()) | |
8052 | { | |
412294da | 8053 | Address dst_off = lsym.get_st_value() + reloc.get_r_addend(); |
5edad15d AM |
8054 | if (dst_off < ppc_object->section_size(shndx)) |
8055 | { | |
8056 | bool ok = false; | |
8057 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
8058 | ok = true; | |
8059 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
8060 | { | |
8061 | // Need to check that the insn is a ld | |
8062 | if (!view) | |
8063 | view = ppc_object->section_contents(data_shndx, | |
8064 | &slen, | |
8065 | false); | |
8066 | section_size_type off = | |
8067 | (convert_to_section_size_type(reloc.get_r_offset()) | |
8068 | + (big_endian ? -2 : 3)); | |
8069 | if (off < slen | |
8070 | && (view[off] & (0x3f << 2)) == 58u << 2) | |
8071 | ok = true; | |
8072 | } | |
8073 | if (!ok) | |
8074 | ppc_object->set_no_toc_opt(dst_off); | |
8075 | } | |
8076 | } | |
8077 | break; | |
8078 | } | |
8079 | } | |
8080 | ||
f159cdb6 AM |
8081 | if (size == 32) |
8082 | { | |
8083 | switch (r_type) | |
8084 | { | |
8085 | case elfcpp::R_POWERPC_REL32: | |
8086 | if (ppc_object->got2_shndx() != 0 | |
8087 | && parameters->options().output_is_position_independent()) | |
8088 | { | |
8089 | unsigned int shndx = lsym.get_st_shndx(); | |
8090 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8091 | bool is_ordinary; | |
8092 | shndx = ppc_object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
8093 | if (is_ordinary && shndx == ppc_object->got2_shndx() | |
8094 | && (ppc_object->section_flags(data_shndx) | |
8095 | & elfcpp::SHF_EXECINSTR) != 0) | |
8096 | gold_error(_("%s: unsupported -mbss-plt code"), | |
8097 | ppc_object->name().c_str()); | |
8098 | } | |
8099 | break; | |
8100 | default: | |
8101 | break; | |
8102 | } | |
8103 | } | |
8104 | ||
d8f5a274 AM |
8105 | switch (r_type) |
8106 | { | |
8107 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
8108 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8109 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8110 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8111 | case elfcpp::R_POWERPC_GOT16: | |
8112 | case elfcpp::R_PPC64_GOT16_DS: | |
8113 | case elfcpp::R_PPC64_TOC16: | |
8114 | case elfcpp::R_PPC64_TOC16_DS: | |
8115 | ppc_object->set_has_small_toc_reloc(); | |
8116 | default: | |
8117 | break; | |
8118 | } | |
dd93cd0a AM |
8119 | } |
8120 | ||
8121 | // Report an unsupported relocation against a global symbol. | |
8122 | ||
8123 | template<int size, bool big_endian> | |
8124 | void | |
8125 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
8126 | Sized_relobj_file<size, big_endian>* object, | |
8127 | unsigned int r_type, | |
8128 | Symbol* gsym) | |
8129 | { | |
42cacb20 DE |
8130 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
8131 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
8132 | } | |
8133 | ||
8134 | // Scan a relocation for a global symbol. | |
8135 | ||
8136 | template<int size, bool big_endian> | |
8137 | inline void | |
8138 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
8139 | Symbol_table* symtab, |
8140 | Layout* layout, | |
8141 | Target_powerpc<size, big_endian>* target, | |
8142 | Sized_relobj_file<size, big_endian>* object, | |
8143 | unsigned int data_shndx, | |
8144 | Output_section* output_section, | |
8145 | const elfcpp::Rela<size, big_endian>& reloc, | |
8146 | unsigned int r_type, | |
8147 | Symbol* gsym) | |
42cacb20 | 8148 | { |
34e0882b AM |
8149 | if (this->maybe_skip_tls_get_addr_call(target, r_type, gsym) |
8150 | == Track_tls::SKIP) | |
e3deeb9c AM |
8151 | return; |
8152 | ||
34e0882b AM |
8153 | if (target->replace_tls_get_addr(gsym)) |
8154 | // Change a __tls_get_addr reference to __tls_get_addr_opt | |
8155 | // so dynamic relocs are emitted against the latter symbol. | |
8156 | gsym = target->tls_get_addr_opt(); | |
8157 | ||
e3deeb9c AM |
8158 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) |
8159 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8160 | { | |
8161 | this->expect_tls_get_addr_call(); | |
8162 | const bool final = gsym->final_value_is_known(); | |
8163 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8164 | if (tls_type != tls::TLSOPT_NONE) | |
8165 | this->skip_next_tls_get_addr_call(); | |
8166 | } | |
8167 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8168 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8169 | { | |
8170 | this->expect_tls_get_addr_call(); | |
8171 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8172 | if (tls_type != tls::TLSOPT_NONE) | |
8173 | this->skip_next_tls_get_addr_call(); | |
8174 | } | |
8175 | ||
dd93cd0a AM |
8176 | Powerpc_relobj<size, big_endian>* ppc_object |
8177 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
8178 | ||
e5d5f5ed | 8179 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 8180 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
8181 | bool pushed_ifunc = false; |
8182 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 8183 | { |
0e123f69 | 8184 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 8185 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8186 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 8187 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 8188 | pushed_ifunc = true; |
ec661b9d | 8189 | } |
e5d5f5ed | 8190 | |
42cacb20 DE |
8191 | switch (r_type) |
8192 | { | |
8193 | case elfcpp::R_POWERPC_NONE: | |
8194 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
8195 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 8196 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 8197 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 8198 | case elfcpp::R_PPC64_ENTRY: |
23cedd1d AM |
8199 | case elfcpp::R_POWERPC_PLTSEQ: |
8200 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
8201 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
8202 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 AM |
8203 | case elfcpp::R_PPC64_PCREL_OPT: |
8204 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
8205 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
8206 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
8207 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
8208 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
8209 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
8210 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
8211 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
8212 | break; | |
8213 | ||
8214 | case elfcpp::R_PPC64_D34: | |
8215 | case elfcpp::R_PPC64_D34_LO: | |
8216 | case elfcpp::R_PPC64_D34_HI30: | |
8217 | case elfcpp::R_PPC64_D34_HA30: | |
8218 | case elfcpp::R_PPC64_D28: | |
8219 | case elfcpp::R_PPC64_PCREL34: | |
8220 | case elfcpp::R_PPC64_PCREL28: | |
8221 | target->set_powerxx_stubs(); | |
dd93cd0a AM |
8222 | break; |
8223 | ||
8224 | case elfcpp::R_PPC64_TOC: | |
8225 | { | |
8226 | Output_data_got_powerpc<size, big_endian>* got | |
8227 | = target->got_section(symtab, layout); | |
8228 | if (parameters->options().output_is_position_independent()) | |
8229 | { | |
bfdfa4cd AM |
8230 | Address off = reloc.get_r_offset(); |
8231 | if (size == 64 | |
8232 | && data_shndx == ppc_object->opd_shndx() | |
8233 | && ppc_object->get_opd_discard(off - 8)) | |
8234 | break; | |
8235 | ||
dd93cd0a AM |
8236 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8237 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
8238 | if (data_shndx != ppc_object->opd_shndx()) | |
8239 | symobj = static_cast | |
8240 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8241 | rela_dyn->add_output_section_relative(got->output_section(), | |
8242 | elfcpp::R_POWERPC_RELATIVE, | |
8243 | output_section, | |
bfdfa4cd | 8244 | object, data_shndx, off, |
dd93cd0a AM |
8245 | symobj->toc_base_offset()); |
8246 | } | |
8247 | } | |
42cacb20 DE |
8248 | break; |
8249 | ||
c9269dff | 8250 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 8251 | if (size == 64 |
9055360d | 8252 | && target->abiversion() < 2 |
bfdfa4cd AM |
8253 | && data_shndx == ppc_object->opd_shndx() |
8254 | && (gsym->is_defined_in_discarded_section() | |
8255 | || gsym->object() != object)) | |
8256 | { | |
8257 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
8258 | break; | |
8259 | } | |
d8e90251 | 8260 | // Fall through. |
dd93cd0a | 8261 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 8262 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
8263 | case elfcpp::R_POWERPC_UADDR32: |
8264 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
8265 | case elfcpp::R_POWERPC_ADDR16: |
8266 | case elfcpp::R_POWERPC_ADDR16_LO: | |
8267 | case elfcpp::R_POWERPC_ADDR16_HI: | |
8268 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 8269 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
8270 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8271 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
8272 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
8273 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
8274 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
8275 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
8276 | case elfcpp::R_PPC64_ADDR16_DS: | |
8277 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
8278 | case elfcpp::R_POWERPC_ADDR14: | |
8279 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8280 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 8281 | { |
c9269dff AM |
8282 | // Make a PLT entry if necessary. |
8283 | if (gsym->needs_plt_entry()) | |
8284 | { | |
9055360d AM |
8285 | // Since this is not a PC-relative relocation, we may be |
8286 | // taking the address of a function. In that case we need to | |
8287 | // set the entry in the dynamic symbol table to the address of | |
8288 | // the PLT call stub. | |
8289 | bool need_ifunc_plt = false; | |
8290 | if ((size == 32 || target->abiversion() >= 2) | |
8291 | && gsym->is_from_dynobj() | |
8292 | && !parameters->options().output_is_position_independent()) | |
8293 | { | |
8294 | gsym->set_needs_dynsym_value(); | |
8295 | need_ifunc_plt = true; | |
8296 | } | |
8297 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 8298 | { |
0e123f69 | 8299 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8300 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 8301 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
8302 | reloc.get_r_addend()); |
8303 | target->make_plt_entry(symtab, layout, gsym); | |
8304 | } | |
c9269dff AM |
8305 | } |
8306 | // Make a dynamic relocation if necessary. | |
88b8e639 | 8307 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 8308 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 8309 | { |
a82bef93 ST |
8310 | if (!parameters->options().output_is_position_independent() |
8311 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
8312 | { |
8313 | target->copy_reloc(symtab, layout, object, | |
8314 | data_shndx, output_section, gsym, reloc); | |
8315 | } | |
9055360d AM |
8316 | else if ((((size == 32 |
8317 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
8318 | || (size == 64 | |
8319 | && r_type == elfcpp::R_PPC64_ADDR64 | |
8320 | && target->abiversion() >= 2)) | |
627b30b7 AM |
8321 | && gsym->can_use_relative_reloc(false) |
8322 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
8323 | && parameters->options().shared())) | |
8324 | || (size == 64 | |
8325 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 8326 | && target->abiversion() < 2 |
627b30b7 AM |
8327 | && (gsym->can_use_relative_reloc(false) |
8328 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 8329 | { |
b3ccdeb5 AM |
8330 | Reloc_section* rela_dyn |
8331 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
8332 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
8333 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
8334 | rela_dyn->add_symbolless_global_addend( |
8335 | gsym, dynrel, output_section, object, data_shndx, | |
8336 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
8337 | } |
8338 | else | |
8339 | { | |
b3ccdeb5 AM |
8340 | Reloc_section* rela_dyn |
8341 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 8342 | check_non_pic(object, r_type); |
dd93cd0a AM |
8343 | rela_dyn->add_global(gsym, r_type, output_section, |
8344 | object, data_shndx, | |
8345 | reloc.get_r_offset(), | |
8346 | reloc.get_r_addend()); | |
5edad15d AM |
8347 | |
8348 | if (size == 64 | |
8349 | && parameters->options().toc_optimize() | |
8350 | && data_shndx == ppc_object->toc_shndx()) | |
8351 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
2e702c99 RM |
8352 | } |
8353 | } | |
42cacb20 DE |
8354 | } |
8355 | break; | |
8356 | ||
e4dff765 AM |
8357 | case elfcpp::R_PPC64_PLT_PCREL34: |
8358 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
8359 | target->set_powerxx_stubs(); | |
8360 | // Fall through. | |
08be3224 AM |
8361 | case elfcpp::R_POWERPC_PLT16_LO: |
8362 | case elfcpp::R_POWERPC_PLT16_HI: | |
8363 | case elfcpp::R_POWERPC_PLT16_HA: | |
8364 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8365 | if (!pushed_ifunc) | |
8366 | target->make_plt_entry(symtab, layout, gsym); | |
8367 | break; | |
8368 | ||
32f59844 AM |
8369 | case elfcpp::R_PPC64_REL24_NOTOC: |
8370 | if (size == 32) | |
8371 | break; | |
8372 | // Fall through. | |
cf43a2fe | 8373 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 8374 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
8375 | if (!is_ifunc) |
8376 | { | |
0e123f69 | 8377 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 8378 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 8379 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
8380 | if (gsym->needs_plt_entry() |
8381 | || (!gsym->final_value_is_known() | |
8382 | && (gsym->is_undefined() | |
8383 | || gsym->is_from_dynobj() | |
8384 | || gsym->is_preemptible()))) | |
8385 | target->make_plt_entry(symtab, layout, gsym); | |
8386 | } | |
d8e90251 | 8387 | // Fall through. |
42cacb20 | 8388 | |
3ea0a085 | 8389 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 8390 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 8391 | // Make a dynamic relocation if necessary. |
88b8e639 | 8392 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 8393 | { |
a82bef93 ST |
8394 | if (!parameters->options().output_is_position_independent() |
8395 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
8396 | { |
8397 | target->copy_reloc(symtab, layout, object, | |
8398 | data_shndx, output_section, gsym, | |
8399 | reloc); | |
8400 | } | |
8401 | else | |
8402 | { | |
b3ccdeb5 AM |
8403 | Reloc_section* rela_dyn |
8404 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
8405 | check_non_pic(object, r_type); |
8406 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
8407 | data_shndx, reloc.get_r_offset(), | |
8408 | reloc.get_r_addend()); | |
8409 | } | |
8410 | } | |
8411 | break; | |
8412 | ||
ec661b9d AM |
8413 | case elfcpp::R_POWERPC_REL14: |
8414 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8415 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 8416 | if (!is_ifunc) |
0e123f69 AM |
8417 | { |
8418 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8419 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
8420 | r_type, r_sym, reloc.get_r_addend()); | |
8421 | } | |
ec661b9d AM |
8422 | break; |
8423 | ||
7e57d19e AM |
8424 | case elfcpp::R_PPC64_TOCSAVE: |
8425 | // R_PPC64_TOCSAVE follows a call instruction to indicate the | |
8426 | // caller has already saved r2 and thus a plt call stub need not | |
8427 | // save r2. | |
8428 | if (size == 64 | |
8429 | && target->mark_pltcall(ppc_object, data_shndx, | |
8430 | reloc.get_r_offset() - 4, symtab)) | |
8431 | { | |
8432 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
8433 | bool is_ordinary; | |
8434 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
8435 | if (!is_ordinary) | |
8436 | object->error(_("tocsave symbol %u has bad shndx %u"), | |
8437 | r_sym, shndx); | |
8438 | else | |
8439 | { | |
8440 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
8441 | target->add_tocsave(ppc_object, shndx, | |
8442 | sym->value() + reloc.get_r_addend()); | |
8443 | } | |
8444 | } | |
8445 | break; | |
8446 | ||
6ce78956 AM |
8447 | case elfcpp::R_POWERPC_REL16: |
8448 | case elfcpp::R_POWERPC_REL16_LO: | |
8449 | case elfcpp::R_POWERPC_REL16_HI: | |
8450 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 8451 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
8452 | case elfcpp::R_PPC64_REL16_HIGH: |
8453 | case elfcpp::R_PPC64_REL16_HIGHA: | |
8454 | case elfcpp::R_PPC64_REL16_HIGHER: | |
8455 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
8456 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
8457 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a | 8458 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 8459 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 8460 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 8461 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
8462 | case elfcpp::R_PPC64_SECTOFF_DS: |
8463 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
8464 | case elfcpp::R_POWERPC_TPREL16: | |
8465 | case elfcpp::R_POWERPC_TPREL16_LO: | |
8466 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 8467 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
8468 | case elfcpp::R_PPC64_TPREL16_DS: |
8469 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8470 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8471 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 8472 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 8473 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 8474 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 8475 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
8476 | case elfcpp::R_POWERPC_DTPREL16: |
8477 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8478 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8479 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
8480 | case elfcpp::R_PPC64_DTPREL16_DS: |
8481 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
8482 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
8483 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8484 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
8485 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
8486 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
8487 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
8488 | case elfcpp::R_PPC64_TLSGD: |
8489 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 8490 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
8491 | break; |
8492 | ||
e4dff765 AM |
8493 | case elfcpp::R_PPC64_GOT_PCREL34: |
8494 | target->set_powerxx_stubs(); | |
8495 | // Fall through. | |
42cacb20 DE |
8496 | case elfcpp::R_POWERPC_GOT16: |
8497 | case elfcpp::R_POWERPC_GOT16_LO: | |
8498 | case elfcpp::R_POWERPC_GOT16_HI: | |
8499 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
8500 | case elfcpp::R_PPC64_GOT16_DS: |
8501 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 8502 | { |
c9269dff AM |
8503 | // The symbol requires a GOT entry. |
8504 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
8505 | |
8506 | got = target->got_section(symtab, layout); | |
2e702c99 | 8507 | if (gsym->final_value_is_known()) |
2e702c99 | 8508 | { |
b01a4b04 AM |
8509 | if (is_ifunc |
8510 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
8511 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
8512 | else | |
8513 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
8514 | } | |
8515 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
8516 | { | |
8517 | // If we are generating a shared object or a pie, this | |
8518 | // symbol's GOT entry will be set by a dynamic relocation. | |
8519 | unsigned int off = got->add_constant(0); | |
8520 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
8521 | ||
b3ccdeb5 AM |
8522 | Reloc_section* rela_dyn |
8523 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
8524 | ||
e5d5f5ed | 8525 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
8526 | && !((size == 32 |
8527 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
8528 | && gsym->visibility() == elfcpp::STV_PROTECTED |
8529 | && parameters->options().shared())) | |
2e702c99 | 8530 | { |
b3ccdeb5 AM |
8531 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
8532 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
8533 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
8534 | } | |
8535 | else | |
8536 | { | |
8537 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
8538 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 8539 | } |
2e702c99 | 8540 | } |
42cacb20 DE |
8541 | } |
8542 | break; | |
8543 | ||
cf43a2fe AM |
8544 | case elfcpp::R_PPC64_TOC16: |
8545 | case elfcpp::R_PPC64_TOC16_LO: | |
8546 | case elfcpp::R_PPC64_TOC16_HI: | |
8547 | case elfcpp::R_PPC64_TOC16_HA: | |
8548 | case elfcpp::R_PPC64_TOC16_DS: | |
8549 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
8550 | // We need a GOT section. |
8551 | target->got_section(symtab, layout); | |
8552 | break; | |
8553 | ||
dd93cd0a AM |
8554 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
8555 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8556 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8557 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8558 | { | |
8559 | const bool final = gsym->final_value_is_known(); | |
8560 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
8561 | if (tls_type == tls::TLSOPT_NONE) | |
8562 | { | |
8563 | Output_data_got_powerpc<size, big_endian>* got | |
8564 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
8565 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
8566 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
8567 | elfcpp::R_POWERPC_DTPMOD, |
8568 | elfcpp::R_POWERPC_DTPREL); | |
8569 | } | |
8570 | else if (tls_type == tls::TLSOPT_TO_IE) | |
8571 | { | |
acc276d8 AM |
8572 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
8573 | { | |
8574 | Output_data_got_powerpc<size, big_endian>* got | |
8575 | = target->got_section(symtab, layout); | |
8576 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8577 | if (gsym->is_undefined() | |
8578 | || gsym->is_from_dynobj()) | |
8579 | { | |
8580 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
8581 | elfcpp::R_POWERPC_TPREL); | |
8582 | } | |
8583 | else | |
8584 | { | |
8585 | unsigned int off = got->add_constant(0); | |
8586 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
8587 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
8588 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
8589 | got, off, 0); | |
8590 | } | |
8591 | } | |
dd93cd0a AM |
8592 | } |
8593 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8594 | { | |
8595 | // no GOT relocs needed for Local Exec. | |
8596 | } | |
8597 | else | |
8598 | gold_unreachable(); | |
8599 | } | |
42cacb20 DE |
8600 | break; |
8601 | ||
dd93cd0a AM |
8602 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
8603 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8604 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8605 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8606 | { | |
8607 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
8608 | if (tls_type == tls::TLSOPT_NONE) | |
8609 | target->tlsld_got_offset(symtab, layout, object); | |
8610 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8611 | { | |
8612 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
8613 | if (parameters->options().emit_relocs()) |
8614 | { | |
8615 | Output_section* os = layout->tls_segment()->first_section(); | |
8616 | gold_assert(os != NULL); | |
8617 | os->set_needs_symtab_index(); | |
8618 | } | |
dd93cd0a AM |
8619 | } |
8620 | else | |
8621 | gold_unreachable(); | |
8622 | } | |
8623 | break; | |
8624 | ||
8625 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8626 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8627 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8628 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8629 | { | |
8630 | Output_data_got_powerpc<size, big_endian>* got | |
8631 | = target->got_section(symtab, layout); | |
bd73a62d AM |
8632 | if (!gsym->final_value_is_known() |
8633 | && (gsym->is_from_dynobj() | |
8634 | || gsym->is_undefined() | |
8635 | || gsym->is_preemptible())) | |
8636 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
8637 | target->rela_dyn_section(layout), | |
8638 | elfcpp::R_POWERPC_DTPREL); | |
8639 | else | |
8640 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
8641 | } |
8642 | break; | |
8643 | ||
8644 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8645 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8646 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8647 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8648 | { | |
8649 | const bool final = gsym->final_value_is_known(); | |
8650 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
8651 | if (tls_type == tls::TLSOPT_NONE) | |
8652 | { | |
acc276d8 AM |
8653 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
8654 | { | |
8655 | Output_data_got_powerpc<size, big_endian>* got | |
8656 | = target->got_section(symtab, layout); | |
8657 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
8658 | if (gsym->is_undefined() | |
8659 | || gsym->is_from_dynobj()) | |
8660 | { | |
8661 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
8662 | elfcpp::R_POWERPC_TPREL); | |
8663 | } | |
8664 | else | |
8665 | { | |
8666 | unsigned int off = got->add_constant(0); | |
8667 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
8668 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
8669 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
8670 | got, off, 0); | |
8671 | } | |
8672 | } | |
dd93cd0a AM |
8673 | } |
8674 | else if (tls_type == tls::TLSOPT_TO_LE) | |
8675 | { | |
8676 | // no GOT relocs needed for Local Exec. | |
8677 | } | |
8678 | else | |
8679 | gold_unreachable(); | |
8680 | } | |
42cacb20 DE |
8681 | break; |
8682 | ||
8683 | default: | |
8684 | unsupported_reloc_global(object, r_type, gsym); | |
8685 | break; | |
8686 | } | |
d8f5a274 | 8687 | |
5edad15d AM |
8688 | if (size == 64 |
8689 | && parameters->options().toc_optimize()) | |
8690 | { | |
8691 | if (data_shndx == ppc_object->toc_shndx()) | |
8692 | { | |
8693 | bool ok = true; | |
8694 | if (r_type != elfcpp::R_PPC64_ADDR64 | |
8695 | || (is_ifunc && target->abiversion() < 2)) | |
8696 | ok = false; | |
8697 | else if (parameters->options().output_is_position_independent() | |
8698 | && (is_ifunc || gsym->is_absolute() || gsym->is_undefined())) | |
8699 | ok = false; | |
8700 | if (!ok) | |
8701 | ppc_object->set_no_toc_opt(reloc.get_r_offset()); | |
8702 | } | |
8703 | ||
8704 | enum {no_check, check_lo, check_ha} insn_check; | |
8705 | switch (r_type) | |
8706 | { | |
8707 | default: | |
8708 | insn_check = no_check; | |
8709 | break; | |
8710 | ||
8711 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8712 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8713 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8714 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8715 | case elfcpp::R_POWERPC_GOT16_HA: | |
8716 | case elfcpp::R_PPC64_TOC16_HA: | |
8717 | insn_check = check_ha; | |
8718 | break; | |
8719 | ||
8720 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
8721 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8722 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
8723 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
8724 | case elfcpp::R_POWERPC_GOT16_LO: | |
8725 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8726 | case elfcpp::R_PPC64_TOC16_LO: | |
8727 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8728 | insn_check = check_lo; | |
8729 | break; | |
8730 | } | |
8731 | ||
8732 | section_size_type slen; | |
8733 | const unsigned char* view = NULL; | |
8734 | if (insn_check != no_check) | |
8735 | { | |
8736 | view = ppc_object->section_contents(data_shndx, &slen, false); | |
8737 | section_size_type off = | |
8738 | convert_to_section_size_type(reloc.get_r_offset()) & -4; | |
8739 | if (off < slen) | |
8740 | { | |
8741 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(view + off); | |
8742 | if (insn_check == check_lo | |
8743 | ? !ok_lo_toc_insn(insn, r_type) | |
8744 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8745 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
8746 | { | |
8747 | ppc_object->set_no_toc_opt(); | |
8748 | gold_warning(_("%s: toc optimization is not supported " | |
8749 | "for %#08x instruction"), | |
8750 | ppc_object->name().c_str(), insn); | |
8751 | } | |
8752 | } | |
8753 | } | |
8754 | ||
8755 | switch (r_type) | |
8756 | { | |
8757 | default: | |
8758 | break; | |
8759 | case elfcpp::R_PPC64_TOC16: | |
8760 | case elfcpp::R_PPC64_TOC16_LO: | |
8761 | case elfcpp::R_PPC64_TOC16_HI: | |
8762 | case elfcpp::R_PPC64_TOC16_HA: | |
8763 | case elfcpp::R_PPC64_TOC16_DS: | |
8764 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
8765 | if (gsym->source() == Symbol::FROM_OBJECT | |
8766 | && !gsym->object()->is_dynamic()) | |
8767 | { | |
8768 | Powerpc_relobj<size, big_endian>* sym_object | |
8769 | = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
8770 | bool is_ordinary; | |
8771 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
8772 | if (shndx == sym_object->toc_shndx()) | |
8773 | { | |
8774 | Sized_symbol<size>* sym = symtab->get_sized_symbol<size>(gsym); | |
412294da | 8775 | Address dst_off = sym->value() + reloc.get_r_addend(); |
5edad15d AM |
8776 | if (dst_off < sym_object->section_size(shndx)) |
8777 | { | |
8778 | bool ok = false; | |
8779 | if (r_type == elfcpp::R_PPC64_TOC16_HA) | |
8780 | ok = true; | |
8781 | else if (r_type == elfcpp::R_PPC64_TOC16_LO_DS) | |
8782 | { | |
8783 | // Need to check that the insn is a ld | |
8784 | if (!view) | |
8785 | view = ppc_object->section_contents(data_shndx, | |
8786 | &slen, | |
8787 | false); | |
8788 | section_size_type off = | |
8789 | (convert_to_section_size_type(reloc.get_r_offset()) | |
8790 | + (big_endian ? -2 : 3)); | |
8791 | if (off < slen | |
8792 | && (view[off] & (0x3f << 2)) == (58u << 2)) | |
8793 | ok = true; | |
8794 | } | |
8795 | if (!ok) | |
8796 | sym_object->set_no_toc_opt(dst_off); | |
8797 | } | |
8798 | } | |
8799 | } | |
8800 | break; | |
8801 | } | |
8802 | } | |
8803 | ||
f159cdb6 AM |
8804 | if (size == 32) |
8805 | { | |
8806 | switch (r_type) | |
8807 | { | |
8808 | case elfcpp::R_PPC_LOCAL24PC: | |
8809 | if (strcmp(gsym->name(), "_GLOBAL_OFFSET_TABLE_") == 0) | |
8810 | gold_error(_("%s: unsupported -mbss-plt code"), | |
8811 | ppc_object->name().c_str()); | |
8812 | break; | |
8813 | default: | |
8814 | break; | |
8815 | } | |
8816 | } | |
8817 | ||
d8f5a274 AM |
8818 | switch (r_type) |
8819 | { | |
8820 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
8821 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8822 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
8823 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
8824 | case elfcpp::R_POWERPC_GOT16: | |
8825 | case elfcpp::R_PPC64_GOT16_DS: | |
8826 | case elfcpp::R_PPC64_TOC16: | |
8827 | case elfcpp::R_PPC64_TOC16_DS: | |
8828 | ppc_object->set_has_small_toc_reloc(); | |
8829 | default: | |
8830 | break; | |
8831 | } | |
42cacb20 DE |
8832 | } |
8833 | ||
6d03d481 ST |
8834 | // Process relocations for gc. |
8835 | ||
8836 | template<int size, bool big_endian> | |
8837 | void | |
8838 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
8839 | Symbol_table* symtab, |
8840 | Layout* layout, | |
8841 | Sized_relobj_file<size, big_endian>* object, | |
8842 | unsigned int data_shndx, | |
8843 | unsigned int, | |
8844 | const unsigned char* prelocs, | |
8845 | size_t reloc_count, | |
8846 | Output_section* output_section, | |
8847 | bool needs_special_offset_handling, | |
8848 | size_t local_symbol_count, | |
8849 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
8850 | { |
8851 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
8852 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
8853 | Classify_reloc; | |
8854 | ||
e81fea4d AM |
8855 | Powerpc_relobj<size, big_endian>* ppc_object |
8856 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
8857 | if (size == 64) | |
8858 | ppc_object->set_opd_valid(); | |
8859 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
8860 | { | |
8861 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
8862 | for (p = ppc_object->access_from_map()->begin(); | |
8863 | p != ppc_object->access_from_map()->end(); | |
8864 | ++p) | |
8865 | { | |
8866 | Address dst_off = p->first; | |
8867 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
8868 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
8869 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
8870 | { | |
efc6fa12 | 8871 | Relobj* src_obj = s->first; |
e81fea4d AM |
8872 | unsigned int src_indx = s->second; |
8873 | symtab->gc()->add_reference(src_obj, src_indx, | |
8874 | ppc_object, dst_indx); | |
8875 | } | |
8876 | p->second.clear(); | |
8877 | } | |
8878 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 8879 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
8880 | // Don't look at .opd relocs as .opd will reference everything. |
8881 | return; | |
8882 | } | |
6d03d481 | 8883 | |
4d625b70 | 8884 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
8885 | symtab, |
8886 | layout, | |
8887 | this, | |
8888 | object, | |
8889 | data_shndx, | |
8890 | prelocs, | |
8891 | reloc_count, | |
8892 | output_section, | |
8893 | needs_special_offset_handling, | |
8894 | local_symbol_count, | |
8895 | plocal_symbols); | |
8896 | } | |
8897 | ||
e81fea4d AM |
8898 | // Handle target specific gc actions when adding a gc reference from |
8899 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
8900 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
8901 | // section of a function descriptor. | |
8902 | ||
8903 | template<int size, bool big_endian> | |
8904 | void | |
8905 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
8906 | Symbol_table* symtab, | |
efc6fa12 | 8907 | Relobj* src_obj, |
e81fea4d | 8908 | unsigned int src_shndx, |
efc6fa12 | 8909 | Relobj* dst_obj, |
e81fea4d AM |
8910 | unsigned int dst_shndx, |
8911 | Address dst_off) const | |
8912 | { | |
6c77229c AM |
8913 | if (size != 64 || dst_obj->is_dynamic()) |
8914 | return; | |
8915 | ||
e81fea4d AM |
8916 | Powerpc_relobj<size, big_endian>* ppc_object |
8917 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 8918 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
8919 | { |
8920 | if (ppc_object->opd_valid()) | |
8921 | { | |
8922 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
8923 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
8924 | } | |
8925 | else | |
8926 | { | |
8927 | // If we haven't run scan_opd_relocs, we must delay | |
8928 | // processing this function descriptor reference. | |
8929 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
8930 | } | |
8931 | } | |
8932 | } | |
8933 | ||
8934 | // Add any special sections for this symbol to the gc work list. | |
8935 | // For powerpc64, this adds the code section of a function | |
8936 | // descriptor. | |
8937 | ||
8938 | template<int size, bool big_endian> | |
8939 | void | |
8940 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
8941 | Symbol_table* symtab, | |
8942 | Symbol* sym) const | |
8943 | { | |
8944 | if (size == 64) | |
8945 | { | |
8946 | Powerpc_relobj<size, big_endian>* ppc_object | |
8947 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
8948 | bool is_ordinary; | |
8949 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 8950 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
8951 | { |
8952 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
8953 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
8954 | if (ppc_object->opd_valid()) |
8955 | { | |
8956 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
8957 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
8958 | dst_indx)); | |
c6de8ed4 AM |
8959 | } |
8960 | else | |
8961 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
8962 | } |
8963 | } | |
8964 | } | |
8965 | ||
dc3714f3 AM |
8966 | // For a symbol location in .opd, set LOC to the location of the |
8967 | // function entry. | |
8968 | ||
8969 | template<int size, bool big_endian> | |
8970 | void | |
8971 | Target_powerpc<size, big_endian>::do_function_location( | |
8972 | Symbol_location* loc) const | |
8973 | { | |
a2d7bf59 | 8974 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
8975 | { |
8976 | if (loc->object->is_dynamic()) | |
8977 | { | |
8978 | Powerpc_dynobj<size, big_endian>* ppc_object | |
8979 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
8980 | if (loc->shndx == ppc_object->opd_shndx()) | |
8981 | { | |
8982 | Address dest_off; | |
8983 | Address off = loc->offset - ppc_object->opd_address(); | |
8984 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
8985 | loc->offset = dest_off; | |
8986 | } | |
8987 | } | |
8988 | else | |
8989 | { | |
8990 | const Powerpc_relobj<size, big_endian>* ppc_object | |
8991 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
8992 | if (loc->shndx == ppc_object->opd_shndx()) | |
8993 | { | |
8994 | Address dest_off; | |
8995 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
8996 | loc->offset = dest_off; | |
8997 | } | |
8998 | } | |
8999 | } | |
9000 | } | |
9001 | ||
bbec1a5d AM |
9002 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
9003 | // compiled with -fsplit-stack. The function calls non-split-stack | |
9004 | // code. Change the function to ensure it has enough stack space to | |
9005 | // call some random function. | |
9006 | ||
9007 | template<int size, bool big_endian> | |
9008 | void | |
9009 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
9010 | Relobj* object, | |
9011 | unsigned int shndx, | |
9012 | section_offset_type fnoffset, | |
9013 | section_size_type fnsize, | |
6e0813d3 CC |
9014 | const unsigned char* prelocs, |
9015 | size_t reloc_count, | |
bbec1a5d AM |
9016 | unsigned char* view, |
9017 | section_size_type view_size, | |
9018 | std::string* from, | |
9019 | std::string* to) const | |
9020 | { | |
9021 | // 32-bit not supported. | |
9022 | if (size == 32) | |
9023 | { | |
9024 | // warn | |
9025 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
9026 | prelocs, reloc_count, view, view_size, |
9027 | from, to); | |
bbec1a5d AM |
9028 | return; |
9029 | } | |
9030 | ||
9031 | // The function always starts with | |
9032 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
9033 | // addis %r12,%r1,-allocate@ha | |
9034 | // addi %r12,%r12,-allocate@l | |
9035 | // cmpld %r12,%r0 | |
9036 | // but note that the addis or addi may be replaced with a nop | |
9037 | ||
9038 | unsigned char *entry = view + fnoffset; | |
9039 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9040 | ||
9041 | if ((insn & 0xffff0000) == addis_2_12) | |
9042 | { | |
9043 | /* Skip ELFv2 global entry code. */ | |
9044 | entry += 8; | |
9045 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
9046 | } | |
9047 | ||
9048 | unsigned char *pinsn = entry; | |
9049 | bool ok = false; | |
9050 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
9051 | if (insn == ld_private_ss) | |
9052 | { | |
9053 | int32_t allocate = 0; | |
9054 | while (1) | |
9055 | { | |
9056 | pinsn += 4; | |
9057 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
9058 | if ((insn & 0xffff0000) == addis_12_1) | |
9059 | allocate += (insn & 0xffff) << 16; | |
9060 | else if ((insn & 0xffff0000) == addi_12_1 | |
9061 | || (insn & 0xffff0000) == addi_12_12) | |
9062 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
9063 | else if (insn != nop) | |
9064 | break; | |
9065 | } | |
9066 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
9067 | { | |
9068 | int extra = parameters->options().split_stack_adjust_size(); | |
9069 | allocate -= extra; | |
9070 | if (allocate >= 0 || extra < 0) | |
9071 | { | |
9072 | object->error(_("split-stack stack size overflow at " | |
9073 | "section %u offset %0zx"), | |
9074 | shndx, static_cast<size_t>(fnoffset)); | |
9075 | return; | |
9076 | } | |
9077 | pinsn = entry + 4; | |
9078 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
9079 | if (insn != addis_12_1) | |
9080 | { | |
9081 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9082 | pinsn += 4; | |
9083 | insn = addi_12_12 | (allocate & 0xffff); | |
9084 | if (insn != addi_12_12) | |
9085 | { | |
9086 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9087 | pinsn += 4; | |
9088 | } | |
9089 | } | |
9090 | else | |
9091 | { | |
9092 | insn = addi_12_1 | (allocate & 0xffff); | |
9093 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
9094 | pinsn += 4; | |
9095 | } | |
9096 | if (pinsn != entry + 12) | |
9097 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
9098 | ||
9099 | ok = true; | |
9100 | } | |
9101 | } | |
9102 | ||
9103 | if (!ok) | |
9104 | { | |
9105 | if (!object->has_no_split_stack()) | |
9106 | object->error(_("failed to match split-stack sequence at " | |
9107 | "section %u offset %0zx"), | |
9108 | shndx, static_cast<size_t>(fnoffset)); | |
9109 | } | |
9110 | } | |
9111 | ||
42cacb20 DE |
9112 | // Scan relocations for a section. |
9113 | ||
9114 | template<int size, bool big_endian> | |
9115 | void | |
9116 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
9117 | Symbol_table* symtab, |
9118 | Layout* layout, | |
9119 | Sized_relobj_file<size, big_endian>* object, | |
9120 | unsigned int data_shndx, | |
9121 | unsigned int sh_type, | |
9122 | const unsigned char* prelocs, | |
9123 | size_t reloc_count, | |
9124 | Output_section* output_section, | |
9125 | bool needs_special_offset_handling, | |
9126 | size_t local_symbol_count, | |
9127 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
9128 | { |
9129 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
9130 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
9131 | Classify_reloc; | |
42cacb20 | 9132 | |
7ee7ff70 AM |
9133 | if (!this->plt_localentry0_init_) |
9134 | { | |
9135 | bool plt_localentry0 = false; | |
9136 | if (size == 64 | |
9137 | && this->abiversion() >= 2) | |
9138 | { | |
9139 | if (parameters->options().user_set_plt_localentry()) | |
9140 | plt_localentry0 = parameters->options().plt_localentry(); | |
d44c746a AM |
9141 | if (plt_localentry0 |
9142 | && symtab->lookup("GLIBC_2.26", NULL) == NULL) | |
9143 | gold_warning(_("--plt-localentry is especially dangerous without " | |
9144 | "ld.so support to detect ABI violations")); | |
7ee7ff70 AM |
9145 | } |
9146 | this->plt_localentry0_ = plt_localentry0; | |
9147 | this->plt_localentry0_init_ = true; | |
9148 | } | |
9149 | ||
42cacb20 DE |
9150 | if (sh_type == elfcpp::SHT_REL) |
9151 | { | |
9152 | gold_error(_("%s: unsupported REL reloc section"), | |
9153 | object->name().c_str()); | |
9154 | return; | |
9155 | } | |
9156 | ||
4d625b70 | 9157 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
9158 | symtab, |
9159 | layout, | |
9160 | this, | |
9161 | object, | |
9162 | data_shndx, | |
9163 | prelocs, | |
9164 | reloc_count, | |
9165 | output_section, | |
9166 | needs_special_offset_handling, | |
9167 | local_symbol_count, | |
9168 | plocal_symbols); | |
9169 | } | |
9170 | ||
ec4dbad3 AM |
9171 | // Functor class for processing the global symbol table. |
9172 | // Removes symbols defined on discarded opd entries. | |
9173 | ||
9174 | template<bool big_endian> | |
9175 | class Global_symbol_visitor_opd | |
9176 | { | |
9177 | public: | |
9178 | Global_symbol_visitor_opd() | |
9179 | { } | |
9180 | ||
9181 | void | |
9182 | operator()(Sized_symbol<64>* sym) | |
9183 | { | |
9184 | if (sym->has_symtab_index() | |
9185 | || sym->source() != Symbol::FROM_OBJECT | |
9186 | || !sym->in_real_elf()) | |
9187 | return; | |
9188 | ||
6c77229c AM |
9189 | if (sym->object()->is_dynamic()) |
9190 | return; | |
9191 | ||
ec4dbad3 AM |
9192 | Powerpc_relobj<64, big_endian>* symobj |
9193 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 9194 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
9195 | return; |
9196 | ||
9197 | bool is_ordinary; | |
9198 | unsigned int shndx = sym->shndx(&is_ordinary); | |
9199 | if (shndx == symobj->opd_shndx() | |
9200 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
9201 | { |
9202 | sym->set_undefined(); | |
e3ee8ed4 | 9203 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
9204 | sym->set_is_defined_in_discarded_section(); |
9205 | sym->set_symtab_index(-1U); | |
9206 | } | |
ec4dbad3 AM |
9207 | } |
9208 | }; | |
9209 | ||
f3a0ed29 AM |
9210 | template<int size, bool big_endian> |
9211 | void | |
9212 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
9213 | Layout* layout, | |
9214 | Symbol_table* symtab) | |
9215 | { | |
9216 | if (size == 64) | |
9217 | { | |
d49044c7 AM |
9218 | Output_data_save_res<size, big_endian>* savres |
9219 | = new Output_data_save_res<size, big_endian>(symtab); | |
9220 | this->savres_section_ = savres; | |
f3a0ed29 AM |
9221 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
9222 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
9223 | savres, ORDER_TEXT, false); | |
9224 | } | |
9225 | } | |
9226 | ||
d8f5a274 AM |
9227 | // Sort linker created .got section first (for the header), then input |
9228 | // sections belonging to files using small model code. | |
9229 | ||
9230 | template<bool big_endian> | |
9231 | class Sort_toc_sections | |
9232 | { | |
9233 | public: | |
9234 | bool | |
9235 | operator()(const Output_section::Input_section& is1, | |
9236 | const Output_section::Input_section& is2) const | |
9237 | { | |
9238 | if (!is1.is_input_section() && is2.is_input_section()) | |
9239 | return true; | |
9240 | bool small1 | |
9241 | = (is1.is_input_section() | |
9242 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
9243 | ->has_small_toc_reloc())); | |
9244 | bool small2 | |
9245 | = (is2.is_input_section() | |
9246 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
9247 | ->has_small_toc_reloc())); | |
9248 | return small1 && !small2; | |
9249 | } | |
9250 | }; | |
9251 | ||
42cacb20 DE |
9252 | // Finalize the sections. |
9253 | ||
9254 | template<int size, bool big_endian> | |
9255 | void | |
d5b40221 DK |
9256 | Target_powerpc<size, big_endian>::do_finalize_sections( |
9257 | Layout* layout, | |
724436fc | 9258 | const Input_objects* input_objects, |
ec4dbad3 | 9259 | Symbol_table* symtab) |
42cacb20 | 9260 | { |
c9824451 AM |
9261 | if (parameters->doing_static_link()) |
9262 | { | |
9263 | // At least some versions of glibc elf-init.o have a strong | |
9264 | // reference to __rela_iplt marker syms. A weak ref would be | |
9265 | // better.. | |
9266 | if (this->iplt_ != NULL) | |
9267 | { | |
9268 | Reloc_section* rel = this->iplt_->rel_plt(); | |
9269 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
9270 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9271 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9272 | elfcpp::STV_HIDDEN, 0, false, true); | |
9273 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
9274 | Symbol_table::PREDEFINED, rel, 0, 0, | |
9275 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9276 | elfcpp::STV_HIDDEN, 0, true, true); | |
9277 | } | |
9278 | else | |
9279 | { | |
9280 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
9281 | Symbol_table::PREDEFINED, 0, 0, | |
9282 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9283 | elfcpp::STV_HIDDEN, 0, true, false); | |
9284 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
9285 | Symbol_table::PREDEFINED, 0, 0, | |
9286 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
9287 | elfcpp::STV_HIDDEN, 0, true, false); | |
9288 | } | |
9289 | } | |
9290 | ||
ec4dbad3 AM |
9291 | if (size == 64) |
9292 | { | |
9293 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
9294 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
9295 | |
9296 | if (!parameters->options().relocatable()) | |
9297 | { | |
9298 | this->define_save_restore_funcs(layout, symtab); | |
9299 | ||
9300 | // Annoyingly, we need to make these sections now whether or | |
9301 | // not we need them. If we delay until do_relax then we | |
9302 | // need to mess with the relaxation machinery checkpointing. | |
9303 | this->got_section(symtab, layout); | |
9304 | this->make_brlt_section(layout); | |
d8f5a274 AM |
9305 | |
9306 | if (parameters->options().toc_sort()) | |
9307 | { | |
9308 | Output_section* os = this->got_->output_section(); | |
9309 | if (os != NULL && os->input_sections().size() > 1) | |
9310 | std::stable_sort(os->input_sections().begin(), | |
9311 | os->input_sections().end(), | |
9312 | Sort_toc_sections<big_endian>()); | |
9313 | } | |
ec661b9d | 9314 | } |
ec4dbad3 AM |
9315 | } |
9316 | ||
42cacb20 | 9317 | // Fill in some more dynamic tags. |
c9269dff | 9318 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 9319 | if (odyn != NULL) |
cf43a2fe | 9320 | { |
c9824451 AM |
9321 | const Reloc_section* rel_plt = (this->plt_ == NULL |
9322 | ? NULL | |
9323 | : this->plt_->rel_plt()); | |
9324 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
9325 | this->rela_dyn_, true, size == 32); | |
9326 | ||
9327 | if (size == 32) | |
dd93cd0a | 9328 | { |
c9824451 AM |
9329 | if (this->got_ != NULL) |
9330 | { | |
9331 | this->got_->finalize_data_size(); | |
9332 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
9333 | this->got_, this->got_->g_o_t()); | |
9334 | } | |
34e0882b AM |
9335 | if (this->has_tls_get_addr_opt_) |
9336 | odyn->add_constant(elfcpp::DT_PPC_OPT, elfcpp::PPC_OPT_TLS); | |
dd93cd0a | 9337 | } |
c9824451 | 9338 | else |
dd93cd0a | 9339 | { |
c9824451 AM |
9340 | if (this->glink_ != NULL) |
9341 | { | |
9342 | this->glink_->finalize_data_size(); | |
9343 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
9344 | this->glink_, | |
9e390558 | 9345 | (this->glink_->pltresolve_size() |
c9824451 AM |
9346 | - 32)); |
9347 | } | |
34e0882b | 9348 | if (this->has_localentry0_ || this->has_tls_get_addr_opt_) |
7ee7ff70 | 9349 | odyn->add_constant(elfcpp::DT_PPC64_OPT, |
34e0882b AM |
9350 | ((this->has_localentry0_ |
9351 | ? elfcpp::PPC64_OPT_LOCALENTRY : 0) | |
9352 | | (this->has_tls_get_addr_opt_ | |
9353 | ? elfcpp::PPC64_OPT_TLS : 0))); | |
dd93cd0a | 9354 | } |
c9269dff | 9355 | } |
cf43a2fe | 9356 | |
42cacb20 DE |
9357 | // Emit any relocs we saved in an attempt to avoid generating COPY |
9358 | // relocs. | |
9359 | if (this->copy_relocs_.any_saved_relocs()) | |
9360 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
724436fc AM |
9361 | |
9362 | for (Input_objects::Relobj_iterator p = input_objects->relobj_begin(); | |
9363 | p != input_objects->relobj_end(); | |
9364 | ++p) | |
9365 | { | |
9366 | Powerpc_relobj<size, big_endian>* ppc_relobj | |
9367 | = static_cast<Powerpc_relobj<size, big_endian>*>(*p); | |
9368 | if (ppc_relobj->attributes_section_data()) | |
9369 | this->merge_object_attributes(ppc_relobj->name().c_str(), | |
9370 | ppc_relobj->attributes_section_data()); | |
9371 | } | |
9372 | for (Input_objects::Dynobj_iterator p = input_objects->dynobj_begin(); | |
9373 | p != input_objects->dynobj_end(); | |
9374 | ++p) | |
9375 | { | |
9376 | Powerpc_dynobj<size, big_endian>* ppc_dynobj | |
9377 | = static_cast<Powerpc_dynobj<size, big_endian>*>(*p); | |
9378 | if (ppc_dynobj->attributes_section_data()) | |
9379 | this->merge_object_attributes(ppc_dynobj->name().c_str(), | |
9380 | ppc_dynobj->attributes_section_data()); | |
9381 | } | |
9382 | ||
9383 | // Create a .gnu.attributes section if we have merged any attributes | |
9384 | // from inputs. | |
9385 | if (this->attributes_section_data_ != NULL | |
9386 | && this->attributes_section_data_->size() != 0) | |
9387 | { | |
9388 | Output_attributes_section_data* attributes_section | |
9389 | = new Output_attributes_section_data(*this->attributes_section_data_); | |
9390 | layout->add_output_section_data(".gnu.attributes", | |
9391 | elfcpp::SHT_GNU_ATTRIBUTES, 0, | |
9392 | attributes_section, ORDER_INVALID, false); | |
9393 | } | |
9394 | } | |
9395 | ||
9396 | // Merge object attributes from input file called NAME with those of the | |
9397 | // output. The input object attributes are in the object pointed by PASD. | |
9398 | ||
9399 | template<int size, bool big_endian> | |
9400 | void | |
9401 | Target_powerpc<size, big_endian>::merge_object_attributes( | |
9402 | const char* name, | |
9403 | const Attributes_section_data* pasd) | |
9404 | { | |
9405 | // Return if there is no attributes section data. | |
9406 | if (pasd == NULL) | |
9407 | return; | |
9408 | ||
9409 | // Create output object attributes. | |
9410 | if (this->attributes_section_data_ == NULL) | |
9411 | this->attributes_section_data_ = new Attributes_section_data(NULL, 0); | |
9412 | ||
9413 | const int vendor = Object_attribute::OBJ_ATTR_GNU; | |
9414 | const Object_attribute* in_attr = pasd->known_attributes(vendor); | |
9415 | Object_attribute* out_attr | |
9416 | = this->attributes_section_data_->known_attributes(vendor); | |
9417 | ||
9418 | const char* err; | |
9419 | const char* first; | |
9420 | const char* second; | |
9421 | int tag = elfcpp::Tag_GNU_Power_ABI_FP; | |
9422 | int in_fp = in_attr[tag].int_value() & 0xf; | |
9423 | int out_fp = out_attr[tag].int_value() & 0xf; | |
9424 | if (in_fp != out_fp) | |
9425 | { | |
9426 | err = NULL; | |
9427 | if ((in_fp & 3) == 0) | |
9428 | ; | |
9429 | else if ((out_fp & 3) == 0) | |
9430 | { | |
9431 | out_fp |= in_fp & 3; | |
9432 | out_attr[tag].set_int_value(out_fp); | |
9433 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9434 | this->last_fp_ = name; | |
9435 | } | |
9436 | else if ((out_fp & 3) != 2 && (in_fp & 3) == 2) | |
9437 | { | |
9438 | err = N_("%s uses hard float, %s uses soft float"); | |
9439 | first = this->last_fp_; | |
9440 | second = name; | |
9441 | } | |
9442 | else if ((out_fp & 3) == 2 && (in_fp & 3) != 2) | |
9443 | { | |
9444 | err = N_("%s uses hard float, %s uses soft float"); | |
9445 | first = name; | |
9446 | second = this->last_fp_; | |
9447 | } | |
9448 | else if ((out_fp & 3) == 1 && (in_fp & 3) == 3) | |
9449 | { | |
9450 | err = N_("%s uses double-precision hard float, " | |
9451 | "%s uses single-precision hard float"); | |
9452 | first = this->last_fp_; | |
9453 | second = name; | |
9454 | } | |
9455 | else if ((out_fp & 3) == 3 && (in_fp & 3) == 1) | |
9456 | { | |
9457 | err = N_("%s uses double-precision hard float, " | |
9458 | "%s uses single-precision hard float"); | |
9459 | first = name; | |
9460 | second = this->last_fp_; | |
9461 | } | |
9462 | ||
9463 | if (err || (in_fp & 0xc) == 0) | |
9464 | ; | |
9465 | else if ((out_fp & 0xc) == 0) | |
9466 | { | |
9467 | out_fp |= in_fp & 0xc; | |
9468 | out_attr[tag].set_int_value(out_fp); | |
9469 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9470 | this->last_ld_ = name; | |
9471 | } | |
9472 | else if ((out_fp & 0xc) != 2 * 4 && (in_fp & 0xc) == 2 * 4) | |
9473 | { | |
9474 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
9475 | first = name; | |
9476 | second = this->last_ld_; | |
9477 | } | |
9478 | else if ((in_fp & 0xc) != 2 * 4 && (out_fp & 0xc) == 2 * 4) | |
9479 | { | |
9480 | err = N_("%s uses 64-bit long double, %s uses 128-bit long double"); | |
9481 | first = this->last_ld_; | |
9482 | second = name; | |
9483 | } | |
9484 | else if ((out_fp & 0xc) == 1 * 4 && (in_fp & 0xc) == 3 * 4) | |
9485 | { | |
9486 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
9487 | first = this->last_ld_; | |
9488 | second = name; | |
9489 | } | |
9490 | else if ((out_fp & 0xc) == 3 * 4 && (in_fp & 0xc) == 1 * 4) | |
9491 | { | |
9492 | err = N_("%s uses IBM long double, %s uses IEEE long double"); | |
9493 | first = name; | |
9494 | second = this->last_ld_; | |
9495 | } | |
9496 | ||
9497 | if (err) | |
9498 | { | |
9499 | if (parameters->options().warn_mismatch()) | |
9500 | gold_error(_(err), first, second); | |
9501 | // Arrange for this attribute to be deleted. It's better to | |
9502 | // say "don't know" about a file than to wrongly claim compliance. | |
9503 | out_attr[tag].set_type(0); | |
9504 | } | |
9505 | } | |
9506 | ||
9507 | if (size == 32) | |
9508 | { | |
9509 | tag = elfcpp::Tag_GNU_Power_ABI_Vector; | |
9510 | int in_vec = in_attr[tag].int_value() & 3; | |
9511 | int out_vec = out_attr[tag].int_value() & 3; | |
9512 | if (in_vec != out_vec) | |
9513 | { | |
9514 | err = NULL; | |
9515 | if (in_vec == 0) | |
9516 | ; | |
9517 | else if (out_vec == 0) | |
9518 | { | |
9519 | out_vec = in_vec; | |
9520 | out_attr[tag].set_int_value(out_vec); | |
9521 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9522 | this->last_vec_ = name; | |
9523 | } | |
9524 | // For now, allow generic to transition to AltiVec or SPE | |
9525 | // without a warning. If GCC marked files with their stack | |
9526 | // alignment and used don't-care markings for files which are | |
9527 | // not affected by the vector ABI, we could warn about this | |
9528 | // case too. */ | |
9529 | else if (in_vec == 1) | |
9530 | ; | |
9531 | else if (out_vec == 1) | |
9532 | { | |
9533 | out_vec = in_vec; | |
9534 | out_attr[tag].set_int_value(out_vec); | |
9535 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9536 | this->last_vec_ = name; | |
9537 | } | |
9538 | else if (out_vec < in_vec) | |
9539 | { | |
9540 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
9541 | first = this->last_vec_; | |
9542 | second = name; | |
9543 | } | |
9544 | else if (out_vec > in_vec) | |
9545 | { | |
9546 | err = N_("%s uses AltiVec vector ABI, %s uses SPE vector ABI"); | |
9547 | first = name; | |
9548 | second = this->last_vec_; | |
9549 | } | |
9550 | if (err) | |
9551 | { | |
9552 | if (parameters->options().warn_mismatch()) | |
9553 | gold_error(_(err), first, second); | |
9554 | out_attr[tag].set_type(0); | |
9555 | } | |
9556 | } | |
9557 | ||
9558 | tag = elfcpp::Tag_GNU_Power_ABI_Struct_Return; | |
9559 | int in_struct = in_attr[tag].int_value() & 3; | |
9560 | int out_struct = out_attr[tag].int_value() & 3; | |
9561 | if (in_struct != out_struct) | |
9562 | { | |
9563 | err = NULL; | |
9564 | if (in_struct == 0 || in_struct == 3) | |
9565 | ; | |
9566 | else if (out_struct == 0) | |
9567 | { | |
9568 | out_struct = in_struct; | |
9569 | out_attr[tag].set_int_value(out_struct); | |
9570 | out_attr[tag].set_type(Object_attribute::ATTR_TYPE_FLAG_INT_VAL); | |
9571 | this->last_struct_ = name; | |
9572 | } | |
9573 | else if (out_struct < in_struct) | |
9574 | { | |
9575 | err = N_("%s uses r3/r4 for small structure returns, " | |
9576 | "%s uses memory"); | |
9577 | first = this->last_struct_; | |
9578 | second = name; | |
9579 | } | |
9580 | else if (out_struct > in_struct) | |
9581 | { | |
9582 | err = N_("%s uses r3/r4 for small structure returns, " | |
9583 | "%s uses memory"); | |
9584 | first = name; | |
9585 | second = this->last_struct_; | |
9586 | } | |
9587 | if (err) | |
9588 | { | |
9589 | if (parameters->options().warn_mismatch()) | |
9590 | gold_error(_(err), first, second); | |
9591 | out_attr[tag].set_type(0); | |
9592 | } | |
9593 | } | |
9594 | } | |
9595 | ||
9596 | // Merge Tag_compatibility attributes and any common GNU ones. | |
9597 | this->attributes_section_data_->merge(name, pasd); | |
42cacb20 DE |
9598 | } |
9599 | ||
5edad15d AM |
9600 | // Emit any saved relocs, and mark toc entries using any of these |
9601 | // relocs as not optimizable. | |
aba6bc71 | 9602 | |
5edad15d AM |
9603 | template<int sh_type, int size, bool big_endian> |
9604 | void | |
9605 | Powerpc_copy_relocs<sh_type, size, big_endian>::emit( | |
9606 | Output_data_reloc<sh_type, true, size, big_endian>* reloc_section) | |
aba6bc71 | 9607 | { |
5edad15d AM |
9608 | if (size == 64 |
9609 | && parameters->options().toc_optimize()) | |
9610 | { | |
9611 | for (typename Copy_relocs<sh_type, size, big_endian>:: | |
9612 | Copy_reloc_entries::iterator p = this->entries_.begin(); | |
9613 | p != this->entries_.end(); | |
9614 | ++p) | |
9615 | { | |
9616 | typename Copy_relocs<sh_type, size, big_endian>::Copy_reloc_entry& | |
9617 | entry = *p; | |
9618 | ||
9619 | // If the symbol is no longer defined in a dynamic object, | |
9620 | // then we emitted a COPY relocation. If it is still | |
9621 | // dynamic then we'll need dynamic relocations and thus | |
9622 | // can't optimize toc entries. | |
9623 | if (entry.sym_->is_from_dynobj()) | |
9624 | { | |
9625 | Powerpc_relobj<size, big_endian>* ppc_object | |
9626 | = static_cast<Powerpc_relobj<size, big_endian>*>(entry.relobj_); | |
9627 | if (entry.shndx_ == ppc_object->toc_shndx()) | |
9628 | ppc_object->set_no_toc_opt(entry.address_); | |
9629 | } | |
9630 | } | |
9631 | } | |
9632 | ||
9633 | Copy_relocs<sh_type, size, big_endian>::emit(reloc_section); | |
aba6bc71 AM |
9634 | } |
9635 | ||
3ea0a085 AM |
9636 | // Return the value to use for a branch relocation. |
9637 | ||
9638 | template<int size, bool big_endian> | |
1611bc4a | 9639 | bool |
3ea0a085 | 9640 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 9641 | const Symbol_table* symtab, |
3ea0a085 AM |
9642 | const Sized_symbol<size>* gsym, |
9643 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 9644 | Address *value, |
3ea0a085 AM |
9645 | unsigned int *dest_shndx) |
9646 | { | |
9055360d AM |
9647 | if (size == 32 || this->abiversion() >= 2) |
9648 | gold_unreachable(); | |
3ea0a085 | 9649 | *dest_shndx = 0; |
3ea0a085 AM |
9650 | |
9651 | // If the symbol is defined in an opd section, ie. is a function | |
9652 | // descriptor, use the function descriptor code entry address | |
9653 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 9654 | if (gsym != NULL |
0e123f69 AM |
9655 | && (gsym->source() != Symbol::FROM_OBJECT |
9656 | || gsym->object()->is_dynamic())) | |
1611bc4a | 9657 | return true; |
3ea0a085 AM |
9658 | if (gsym != NULL) |
9659 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
9660 | unsigned int shndx = symobj->opd_shndx(); | |
9661 | if (shndx == 0) | |
1611bc4a | 9662 | return true; |
3ea0a085 | 9663 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 9664 | if (opd_addr == invalid_address) |
1611bc4a | 9665 | return true; |
c6905c28 | 9666 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 9667 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
9668 | { |
9669 | Address sec_off; | |
1611bc4a | 9670 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
9671 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
9672 | { | |
9673 | Section_id folded | |
9674 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
9675 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
9676 | *dest_shndx = folded.second; | |
9677 | } | |
3ea0a085 | 9678 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
9679 | if (sec_addr == invalid_address) |
9680 | return false; | |
9681 | ||
3ea0a085 | 9682 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 9683 | *value = sec_addr + sec_off; |
3ea0a085 | 9684 | } |
1611bc4a | 9685 | return true; |
3ea0a085 AM |
9686 | } |
9687 | ||
c9b8abb7 AM |
9688 | template<int size> |
9689 | static bool | |
9690 | relative_value_is_known(const Sized_symbol<size>* gsym) | |
9691 | { | |
9692 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
9693 | return false; | |
9694 | ||
9695 | if (gsym->is_from_dynobj() | |
9696 | || gsym->is_undefined() | |
9697 | || gsym->is_preemptible()) | |
9698 | return false; | |
9699 | ||
9700 | if (gsym->is_absolute()) | |
9701 | return !parameters->options().output_is_position_independent(); | |
9702 | ||
9703 | return true; | |
9704 | } | |
9705 | ||
9706 | template<int size> | |
9707 | static bool | |
9708 | relative_value_is_known(const Symbol_value<size>* psymval) | |
9709 | { | |
9710 | if (psymval->is_ifunc_symbol()) | |
9711 | return false; | |
9712 | ||
9713 | bool is_ordinary; | |
9714 | unsigned int shndx = psymval->input_shndx(&is_ordinary); | |
9715 | ||
9716 | return is_ordinary && shndx != elfcpp::SHN_UNDEF; | |
9717 | } | |
9718 | ||
42cacb20 DE |
9719 | // Perform a relocation. |
9720 | ||
9721 | template<int size, bool big_endian> | |
9722 | inline bool | |
9723 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 9724 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 9725 | unsigned int, |
d83ce4e3 AM |
9726 | Target_powerpc* target, |
9727 | Output_section* os, | |
9728 | size_t relnum, | |
91a65d2f | 9729 | const unsigned char* preloc, |
d83ce4e3 AM |
9730 | const Sized_symbol<size>* gsym, |
9731 | const Symbol_value<size>* psymval, | |
9732 | unsigned char* view, | |
c9269dff AM |
9733 | Address address, |
9734 | section_size_type view_size) | |
42cacb20 | 9735 | { |
23cedd1d AM |
9736 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
9737 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; | |
9738 | typedef typename elfcpp::Rela<size, big_endian> Reltype; | |
9739 | ||
0e804863 ILT |
9740 | if (view == NULL) |
9741 | return true; | |
9742 | ||
34e0882b AM |
9743 | if (target->replace_tls_get_addr(gsym)) |
9744 | gsym = static_cast<const Sized_symbol<size>*>(target->tls_get_addr_opt()); | |
9745 | ||
91a65d2f AM |
9746 | const elfcpp::Rela<size, big_endian> rela(preloc); |
9747 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
34e0882b | 9748 | switch (this->maybe_skip_tls_get_addr_call(target, r_type, gsym)) |
dd93cd0a | 9749 | { |
e3deeb9c AM |
9750 | case Track_tls::NOT_EXPECTED: |
9751 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
9752 | _("__tls_get_addr call lacks marker reloc")); | |
9753 | break; | |
9754 | case Track_tls::EXPECTED: | |
9755 | // We have already complained. | |
9756 | break; | |
9757 | case Track_tls::SKIP: | |
23cedd1d | 9758 | if (is_plt16_reloc<size>(r_type) |
32f59844 AM |
9759 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
9760 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC) | |
23cedd1d AM |
9761 | { |
9762 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9763 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9764 | } | |
9765 | else if (size == 64 && r_type == elfcpp::R_POWERPC_PLTCALL) | |
9766 | { | |
9767 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9768 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, nop); | |
9769 | } | |
e4dff765 AM |
9770 | else if (size == 64 && (r_type == elfcpp::R_PPC64_PLT_PCREL34 |
9771 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
9772 | { | |
9773 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9774 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
9775 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
9776 | } | |
e3deeb9c AM |
9777 | return true; |
9778 | case Track_tls::NORMAL: | |
9779 | break; | |
dd93cd0a | 9780 | } |
dd93cd0a | 9781 | |
dcfc7dd4 AM |
9782 | // Offset from start of insn to d-field reloc. |
9783 | const int d_offset = big_endian ? 2 : 0; | |
9784 | ||
3ea0a085 AM |
9785 | Powerpc_relobj<size, big_endian>* const object |
9786 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 9787 | Address value = 0; |
0cfb0717 | 9788 | bool has_stub_value = false; |
7ee7ff70 | 9789 | bool localentry0 = false; |
e5d5f5ed | 9790 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
08be3224 AM |
9791 | bool has_plt_offset |
9792 | = (gsym != NULL | |
88b8e639 | 9793 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
08be3224 AM |
9794 | : object->local_has_plt_offset(r_sym)); |
9795 | if (has_plt_offset | |
9796 | && !is_plt16_reloc<size>(r_type) | |
e4dff765 AM |
9797 | && r_type != elfcpp::R_PPC64_PLT_PCREL34 |
9798 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC | |
23cedd1d AM |
9799 | && r_type != elfcpp::R_POWERPC_PLTSEQ |
9800 | && r_type != elfcpp::R_POWERPC_PLTCALL | |
32f59844 AM |
9801 | && r_type != elfcpp::R_PPC64_PLTSEQ_NOTOC |
9802 | && r_type != elfcpp::R_PPC64_PLTCALL_NOTOC | |
b3ccdeb5 | 9803 | && (!psymval->is_ifunc_symbol() |
9055360d | 9804 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 9805 | { |
9055360d AM |
9806 | if (size == 64 |
9807 | && gsym != NULL | |
9808 | && target->abiversion() >= 2 | |
9809 | && !parameters->options().output_is_position_independent() | |
32f59844 | 9810 | && !is_branch_reloc<size>(r_type)) |
ec661b9d | 9811 | { |
faa2211d AM |
9812 | Address off = target->glink_section()->find_global_entry(gsym); |
9813 | if (off != invalid_address) | |
6ec65f28 AM |
9814 | { |
9815 | value = target->glink_section()->global_entry_address() + off; | |
9816 | has_stub_value = true; | |
9817 | } | |
ec661b9d | 9818 | } |
c9824451 | 9819 | else |
9055360d | 9820 | { |
64b5d6d7 AM |
9821 | Stub_table<size, big_endian>* stub_table = NULL; |
9822 | if (target->stub_tables().size() == 1) | |
9823 | stub_table = target->stub_tables()[0]; | |
9824 | if (stub_table == NULL | |
9825 | && !(size == 32 | |
9826 | && gsym != NULL | |
9827 | && !parameters->options().output_is_position_independent() | |
32f59844 | 9828 | && !is_branch_reloc<size>(r_type))) |
64b5d6d7 | 9829 | stub_table = object->stub_table(relinfo->data_shndx); |
9055360d AM |
9830 | if (stub_table == NULL) |
9831 | { | |
64b5d6d7 AM |
9832 | // This is a ref from a data section to an ifunc symbol, |
9833 | // or a non-branch reloc for which we always want to use | |
9834 | // one set of stubs for resolving function addresses. | |
9055360d AM |
9835 | if (target->stub_tables().size() != 0) |
9836 | stub_table = target->stub_tables()[0]; | |
9837 | } | |
faa2211d AM |
9838 | if (stub_table != NULL) |
9839 | { | |
7e57d19e | 9840 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent; |
faa2211d | 9841 | if (gsym != NULL) |
7e57d19e | 9842 | ent = stub_table->find_plt_call_entry(object, gsym, r_type, |
faa2211d AM |
9843 | rela.get_r_addend()); |
9844 | else | |
7e57d19e | 9845 | ent = stub_table->find_plt_call_entry(object, r_sym, r_type, |
faa2211d | 9846 | rela.get_r_addend()); |
7e57d19e | 9847 | if (ent != NULL) |
faa2211d | 9848 | { |
7e57d19e AM |
9849 | value = stub_table->stub_address() + ent->off_; |
9850 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
9851 | elfcpp::Shdr<size, big_endian> shdr(relinfo->reloc_shdr); | |
9852 | size_t reloc_count = shdr.get_sh_size() / reloc_size; | |
9853 | if (size == 64 | |
9854 | && ent->r2save_ | |
32f59844 AM |
9855 | && r_type == elfcpp::R_PPC64_REL24_NOTOC) |
9856 | value += 4; | |
9857 | else if (size == 64 | |
9858 | && ent->r2save_ | |
9859 | && relnum < reloc_count - 1) | |
7e57d19e AM |
9860 | { |
9861 | Reltype next_rela(preloc + reloc_size); | |
9862 | if (elfcpp::elf_r_type<size>(next_rela.get_r_info()) | |
9863 | == elfcpp::R_PPC64_TOCSAVE | |
9864 | && next_rela.get_r_offset() == rela.get_r_offset() + 4) | |
9865 | value += 4; | |
9866 | } | |
7ee7ff70 | 9867 | localentry0 = ent->localentry0_; |
faa2211d AM |
9868 | has_stub_value = true; |
9869 | } | |
9870 | } | |
9055360d | 9871 | } |
faa2211d AM |
9872 | // We don't care too much about bogus debug references to |
9873 | // non-local functions, but otherwise there had better be a plt | |
9874 | // call stub or global entry stub as appropriate. | |
9875 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 9876 | } |
cf43a2fe | 9877 | |
e4dff765 AM |
9878 | if (has_plt_offset && (is_plt16_reloc<size>(r_type) |
9879 | || r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
9880 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
08be3224 AM |
9881 | { |
9882 | const Output_data_plt_powerpc<size, big_endian>* plt; | |
9883 | if (gsym) | |
9884 | value = target->plt_off(gsym, &plt); | |
9885 | else | |
9886 | value = target->plt_off(object, r_sym, &plt); | |
9887 | value += plt->address(); | |
9888 | ||
9889 | if (size == 64) | |
e4dff765 AM |
9890 | { |
9891 | if (r_type != elfcpp::R_PPC64_PLT_PCREL34 | |
9892 | && r_type != elfcpp::R_PPC64_PLT_PCREL34_NOTOC) | |
9893 | value -= (target->got_section()->output_section()->address() | |
9894 | + object->toc_base_offset()); | |
9895 | } | |
08be3224 AM |
9896 | else if (parameters->options().output_is_position_independent()) |
9897 | { | |
9898 | if (rela.get_r_addend() >= 32768) | |
9899 | { | |
9900 | unsigned int got2 = object->got2_shndx(); | |
9901 | value -= (object->get_output_section_offset(got2) | |
9902 | + object->output_section(got2)->address() | |
9903 | + rela.get_r_addend()); | |
9904 | } | |
9905 | else | |
9906 | value -= (target->got_section()->address() | |
9907 | + target->got_section()->g_o_t()); | |
9908 | } | |
9909 | } | |
23cedd1d AM |
9910 | else if (!has_plt_offset |
9911 | && (is_plt16_reloc<size>(r_type) | |
32f59844 AM |
9912 | || r_type == elfcpp::R_POWERPC_PLTSEQ |
9913 | || r_type == elfcpp::R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
9914 | { |
9915 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9916 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
9917 | r_type = elfcpp::R_POWERPC_NONE; | |
9918 | } | |
e4dff765 AM |
9919 | else if (!has_plt_offset |
9920 | && (r_type == elfcpp::R_PPC64_PLT_PCREL34 | |
9921 | || r_type == elfcpp::R_PPC64_PLT_PCREL34_NOTOC)) | |
9922 | { | |
9923 | Insn* iview = reinterpret_cast<Insn*>(view); | |
9924 | elfcpp::Swap<32, big_endian>::writeval(iview, pnop >> 32); | |
9925 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, pnop & 0xffffffff); | |
9926 | r_type = elfcpp::R_POWERPC_NONE; | |
9927 | } | |
08be3224 AM |
9928 | else if (r_type == elfcpp::R_POWERPC_GOT16 |
9929 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
9930 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
9931 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
9932 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
e4dff765 AM |
9933 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS |
9934 | || r_type == elfcpp::R_PPC64_GOT_PCREL34) | |
42cacb20 | 9935 | { |
cf43a2fe AM |
9936 | if (gsym != NULL) |
9937 | { | |
9938 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
9939 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
9940 | } | |
9941 | else | |
9942 | { | |
cf43a2fe AM |
9943 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
9944 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
9945 | } | |
e4dff765 AM |
9946 | if (r_type == elfcpp::R_PPC64_GOT_PCREL34) |
9947 | value += target->got_section()->address(); | |
9948 | else | |
9949 | value -= target->got_section()->got_base_offset(object); | |
cf43a2fe AM |
9950 | } |
9951 | else if (r_type == elfcpp::R_PPC64_TOC) | |
9952 | { | |
c9269dff | 9953 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 9954 | + object->toc_base_offset()); |
cf43a2fe AM |
9955 | } |
9956 | else if (gsym != NULL | |
9957 | && (r_type == elfcpp::R_POWERPC_REL24 | |
9958 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 9959 | && has_stub_value) |
cf43a2fe | 9960 | { |
c9269dff AM |
9961 | if (size == 64) |
9962 | { | |
9963 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
9964 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
34e0882b AM |
9965 | bool can_plt_call = localentry0 || target->is_tls_get_addr_opt(gsym); |
9966 | if (!can_plt_call && rela.get_r_offset() + 8 <= view_size) | |
c9269dff | 9967 | { |
3ea0a085 | 9968 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 9969 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
9970 | if ((insn & 1) != 0 |
9971 | && (insn2 == nop | |
9972 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 9973 | { |
b4f7960d AM |
9974 | elfcpp::Swap<32, big_endian>:: |
9975 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
9976 | can_plt_call = true; |
9977 | } | |
9978 | } | |
9979 | if (!can_plt_call) | |
3ea0a085 AM |
9980 | { |
9981 | // If we don't have a branch and link followed by a nop, | |
9982 | // we can't go via the plt because there is no place to | |
9983 | // put a toc restoring instruction. | |
9984 | // Unless we know we won't be returning. | |
9985 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
9986 | can_plt_call = true; | |
9987 | } | |
9988 | if (!can_plt_call) | |
9989 | { | |
ba8ca3e7 AM |
9990 | // g++ as of 20130507 emits self-calls without a |
9991 | // following nop. This is arguably wrong since we have | |
9992 | // conflicting information. On the one hand a global | |
9993 | // symbol and on the other a local call sequence, but | |
9994 | // don't error for this special case. | |
9995 | // It isn't possible to cheaply verify we have exactly | |
9996 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 9997 | bool ok = false; |
c9824451 | 9998 | Address code = value; |
3ea0a085 AM |
9999 | if (gsym->source() == Symbol::FROM_OBJECT |
10000 | && gsym->object() == object) | |
10001 | { | |
9055360d AM |
10002 | unsigned int dest_shndx = 0; |
10003 | if (target->abiversion() < 2) | |
10004 | { | |
10005 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
10006 | code = psymval->value(object, addend); |
10007 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
10008 | &code, &dest_shndx); | |
9055360d | 10009 | } |
3ea0a085 AM |
10010 | bool is_ordinary; |
10011 | if (dest_shndx == 0) | |
10012 | dest_shndx = gsym->shndx(&is_ordinary); | |
10013 | ok = dest_shndx == relinfo->data_shndx; | |
10014 | } | |
10015 | if (!ok) | |
c9824451 AM |
10016 | { |
10017 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
10018 | _("call lacks nop, can't restore toc; " | |
10019 | "recompile with -fPIC")); | |
10020 | value = code; | |
10021 | } | |
3ea0a085 | 10022 | } |
c9269dff | 10023 | } |
cf43a2fe | 10024 | } |
dd93cd0a AM |
10025 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
10026 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
10027 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
10028 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
10029 | { | |
10030 | // First instruction of a global dynamic sequence, arg setup insn. | |
10031 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10032 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
10033 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
10034 | if (tls_type == tls::TLSOPT_NONE) | |
10035 | got_type = GOT_TYPE_TLSGD; | |
10036 | else if (tls_type == tls::TLSOPT_TO_IE) | |
10037 | got_type = GOT_TYPE_TPREL; | |
10038 | if (got_type != GOT_TYPE_STANDARD) | |
10039 | { | |
10040 | if (gsym != NULL) | |
10041 | { | |
10042 | gold_assert(gsym->has_got_offset(got_type)); | |
10043 | value = gsym->got_offset(got_type); | |
10044 | } | |
10045 | else | |
10046 | { | |
dd93cd0a AM |
10047 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
10048 | value = object->local_got_offset(r_sym, got_type); | |
10049 | } | |
10050 | value -= target->got_section()->got_base_offset(object); | |
10051 | } | |
10052 | if (tls_type == tls::TLSOPT_TO_IE) | |
10053 | { | |
10054 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10055 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10056 | { | |
dcfc7dd4 | 10057 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10058 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10059 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
10060 | if (size == 32) | |
10061 | insn |= 32 << 26; // lwz | |
10062 | else | |
10063 | insn |= 58 << 26; // ld | |
10064 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10065 | } | |
10066 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
10067 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
10068 | } | |
10069 | else if (tls_type == tls::TLSOPT_TO_LE) | |
10070 | { | |
10071 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
10072 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
10073 | { | |
dcfc7dd4 | 10074 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
10075 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10076 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 10077 | if (size == 32) |
0f81d3f0 AM |
10078 | insn |= addis_0_2; |
10079 | else | |
10080 | insn |= addis_0_13; | |
dd93cd0a AM |
10081 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
10082 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10083 | value = psymval->value(object, rela.get_r_addend()); | |
10084 | } | |
10085 | else | |
10086 | { | |
dcfc7dd4 | 10087 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10088 | Insn insn = nop; |
10089 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10090 | r_type = elfcpp::R_POWERPC_NONE; | |
10091 | } | |
10092 | } | |
10093 | } | |
10094 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10095 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
10096 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
10097 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
10098 | { | |
10099 | // First instruction of a local dynamic sequence, arg setup insn. | |
10100 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
10101 | if (tls_type == tls::TLSOPT_NONE) | |
10102 | { | |
10103 | value = target->tlsld_got_offset(); | |
10104 | value -= target->got_section()->got_base_offset(object); | |
10105 | } | |
10106 | else | |
10107 | { | |
10108 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
10109 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
10110 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
10111 | { | |
dcfc7dd4 | 10112 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
10113 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10114 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 10115 | if (size == 32) |
0f81d3f0 AM |
10116 | insn |= addis_0_2; |
10117 | else | |
10118 | insn |= addis_0_13; | |
dd93cd0a AM |
10119 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
10120 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 10121 | value = dtp_offset; |
dd93cd0a AM |
10122 | } |
10123 | else | |
10124 | { | |
dcfc7dd4 | 10125 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10126 | Insn insn = nop; |
10127 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10128 | r_type = elfcpp::R_POWERPC_NONE; | |
10129 | } | |
10130 | } | |
10131 | } | |
10132 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
10133 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
10134 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
10135 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
10136 | { | |
10137 | // Accesses relative to a local dynamic sequence address, | |
10138 | // no optimisation here. | |
10139 | if (gsym != NULL) | |
10140 | { | |
10141 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
10142 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
10143 | } | |
10144 | else | |
10145 | { | |
dd93cd0a AM |
10146 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
10147 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
10148 | } | |
10149 | value -= target->got_section()->got_base_offset(object); | |
10150 | } | |
10151 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10152 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
10153 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
10154 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
10155 | { | |
10156 | // First instruction of initial exec sequence. | |
10157 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10158 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
10159 | if (tls_type == tls::TLSOPT_NONE) | |
10160 | { | |
10161 | if (gsym != NULL) | |
10162 | { | |
10163 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
10164 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
10165 | } | |
10166 | else | |
10167 | { | |
dd93cd0a AM |
10168 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
10169 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
10170 | } | |
10171 | value -= target->got_section()->got_base_offset(object); | |
10172 | } | |
10173 | else | |
10174 | { | |
10175 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
10176 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
10177 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
10178 | { | |
dcfc7dd4 | 10179 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10180 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
10181 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
10182 | if (size == 32) | |
10183 | insn |= addis_0_2; | |
10184 | else | |
10185 | insn |= addis_0_13; | |
10186 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10187 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
10188 | value = psymval->value(object, rela.get_r_addend()); | |
10189 | } | |
10190 | else | |
10191 | { | |
dcfc7dd4 | 10192 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
10193 | Insn insn = nop; |
10194 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10195 | r_type = elfcpp::R_POWERPC_NONE; | |
10196 | } | |
10197 | } | |
10198 | } | |
10199 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
10200 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
10201 | { | |
10202 | // Second instruction of a global dynamic sequence, | |
10203 | // the __tls_get_addr call | |
e3deeb9c | 10204 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
10205 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
10206 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
10207 | if (tls_type != tls::TLSOPT_NONE) | |
10208 | { | |
10209 | if (tls_type == tls::TLSOPT_TO_IE) | |
10210 | { | |
10211 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10212 | Insn insn = add_3_3_13; | |
10213 | if (size == 32) | |
10214 | insn = add_3_3_2; | |
10215 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10216 | r_type = elfcpp::R_POWERPC_NONE; | |
10217 | } | |
10218 | else | |
10219 | { | |
10220 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10221 | Insn insn = addi_3_3; | |
10222 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10223 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10224 | view += d_offset; |
dd93cd0a AM |
10225 | value = psymval->value(object, rela.get_r_addend()); |
10226 | } | |
e3deeb9c | 10227 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
10228 | } |
10229 | } | |
10230 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
10231 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
10232 | { | |
10233 | // Second instruction of a local dynamic sequence, | |
10234 | // the __tls_get_addr call | |
e3deeb9c | 10235 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
10236 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
10237 | if (tls_type == tls::TLSOPT_TO_LE) | |
10238 | { | |
10239 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10240 | Insn insn = addi_3_3; | |
10241 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 10242 | this->skip_next_tls_get_addr_call(); |
dd93cd0a | 10243 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
dcfc7dd4 | 10244 | view += d_offset; |
7404fe1b | 10245 | value = dtp_offset; |
dd93cd0a AM |
10246 | } |
10247 | } | |
10248 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
10249 | { | |
10250 | // Second instruction of an initial exec sequence | |
10251 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
10252 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
10253 | if (tls_type == tls::TLSOPT_TO_LE) | |
10254 | { | |
10255 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10256 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10257 | unsigned int reg = size == 32 ? 2 : 13; | |
10258 | insn = at_tls_transform(insn, reg); | |
10259 | gold_assert(insn != 0); | |
10260 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10261 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 10262 | view += d_offset; |
dd93cd0a AM |
10263 | value = psymval->value(object, rela.get_r_addend()); |
10264 | } | |
10265 | } | |
0cfb0717 | 10266 | else if (!has_stub_value) |
cf43a2fe | 10267 | { |
32f59844 AM |
10268 | if (!has_plt_offset && (r_type == elfcpp::R_POWERPC_PLTCALL |
10269 | || r_type == elfcpp::R_PPC64_PLTCALL_NOTOC)) | |
23cedd1d AM |
10270 | { |
10271 | // PLTCALL without plt entry => convert to direct call | |
10272 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10273 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10274 | insn = (insn & 1) | b; | |
10275 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10276 | if (size == 32) | |
10277 | r_type = elfcpp::R_PPC_PLTREL24; | |
32f59844 AM |
10278 | else if (r_type == elfcpp::R_PPC64_PLTCALL_NOTOC) |
10279 | r_type = elfcpp::R_PPC64_REL24_NOTOC; | |
23cedd1d AM |
10280 | else |
10281 | r_type = elfcpp::R_POWERPC_REL24; | |
10282 | } | |
dd93cd0a | 10283 | Address addend = 0; |
08be3224 AM |
10284 | if (!(size == 32 |
10285 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
10286 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
10287 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
10288 | || r_type == elfcpp::R_POWERPC_PLT16_HA))) | |
cf43a2fe | 10289 | addend = rela.get_r_addend(); |
c9824451 | 10290 | value = psymval->value(object, addend); |
32f59844 | 10291 | if (size == 64 && is_branch_reloc<size>(r_type)) |
9055360d AM |
10292 | { |
10293 | if (target->abiversion() >= 2) | |
10294 | { | |
10295 | if (gsym != NULL) | |
10296 | value += object->ppc64_local_entry_offset(gsym); | |
10297 | else | |
10298 | value += object->ppc64_local_entry_offset(r_sym); | |
10299 | } | |
10300 | else | |
1611bc4a AM |
10301 | { |
10302 | unsigned int dest_shndx; | |
10303 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
10304 | &value, &dest_shndx); | |
10305 | } | |
9055360d | 10306 | } |
32f59844 | 10307 | Address max_branch_offset = max_branch_delta<size>(r_type); |
ec661b9d | 10308 | if (max_branch_offset != 0 |
32f59844 AM |
10309 | && (value - address + max_branch_offset >= 2 * max_branch_offset |
10310 | || (size == 64 | |
10311 | && r_type == elfcpp::R_PPC64_REL24_NOTOC | |
10312 | && (gsym != NULL | |
10313 | ? object->ppc64_needs_toc(gsym) | |
10314 | : object->ppc64_needs_toc(r_sym))))) | |
ec661b9d AM |
10315 | { |
10316 | Stub_table<size, big_endian>* stub_table | |
10317 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
10318 | if (stub_table != NULL) |
10319 | { | |
32f59844 AM |
10320 | const typename Stub_table<size, big_endian>::Branch_stub_ent* ent |
10321 | = stub_table->find_long_branch_entry(object, value); | |
10322 | if (ent != NULL) | |
0cfb0717 | 10323 | { |
32f59844 AM |
10324 | if (ent->save_res_) |
10325 | value = (value - target->savres_section()->address() | |
10326 | + stub_table->branch_size()); | |
10327 | else | |
10328 | value = (stub_table->stub_address() + stub_table->plt_size() | |
10329 | + ent->off_); | |
0cfb0717 AM |
10330 | has_stub_value = true; |
10331 | } | |
0cfdc767 | 10332 | } |
ec661b9d | 10333 | } |
42cacb20 DE |
10334 | } |
10335 | ||
42cacb20 DE |
10336 | switch (r_type) |
10337 | { | |
32f59844 AM |
10338 | case elfcpp::R_PPC64_REL24_NOTOC: |
10339 | if (size == 32) | |
10340 | break; | |
10341 | // Fall through. | |
dd93cd0a AM |
10342 | case elfcpp::R_PPC64_REL64: |
10343 | case elfcpp::R_POWERPC_REL32: | |
10344 | case elfcpp::R_POWERPC_REL24: | |
10345 | case elfcpp::R_PPC_PLTREL24: | |
10346 | case elfcpp::R_PPC_LOCAL24PC: | |
10347 | case elfcpp::R_POWERPC_REL16: | |
10348 | case elfcpp::R_POWERPC_REL16_LO: | |
10349 | case elfcpp::R_POWERPC_REL16_HI: | |
10350 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 10351 | case elfcpp::R_POWERPC_REL16DX_HA: |
c432bbba AM |
10352 | case elfcpp::R_PPC64_REL16_HIGH: |
10353 | case elfcpp::R_PPC64_REL16_HIGHA: | |
10354 | case elfcpp::R_PPC64_REL16_HIGHER: | |
10355 | case elfcpp::R_PPC64_REL16_HIGHERA: | |
10356 | case elfcpp::R_PPC64_REL16_HIGHEST: | |
10357 | case elfcpp::R_PPC64_REL16_HIGHESTA: | |
dd93cd0a AM |
10358 | case elfcpp::R_POWERPC_REL14: |
10359 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
10360 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
10361 | case elfcpp::R_PPC64_PCREL34: |
10362 | case elfcpp::R_PPC64_GOT_PCREL34: | |
10363 | case elfcpp::R_PPC64_PLT_PCREL34: | |
10364 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
10365 | case elfcpp::R_PPC64_PCREL28: | |
10366 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
10367 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
10368 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
10369 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
dd93cd0a AM |
10370 | value -= address; |
10371 | break; | |
10372 | ||
42cacb20 DE |
10373 | case elfcpp::R_PPC64_TOC16: |
10374 | case elfcpp::R_PPC64_TOC16_LO: | |
10375 | case elfcpp::R_PPC64_TOC16_HI: | |
10376 | case elfcpp::R_PPC64_TOC16_HA: | |
10377 | case elfcpp::R_PPC64_TOC16_DS: | |
10378 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 10379 | // Subtract the TOC base address. |
c9269dff | 10380 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 10381 | + object->toc_base_offset()); |
42cacb20 DE |
10382 | break; |
10383 | ||
cf43a2fe AM |
10384 | case elfcpp::R_POWERPC_SECTOFF: |
10385 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
10386 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
10387 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
10388 | case elfcpp::R_PPC64_SECTOFF_DS: | |
10389 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
10390 | if (os != NULL) | |
10391 | value -= os->address(); | |
42cacb20 DE |
10392 | break; |
10393 | ||
dd93cd0a AM |
10394 | case elfcpp::R_PPC64_TPREL16_DS: |
10395 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
10396 | case elfcpp::R_PPC64_TPREL16_HIGH: |
10397 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 10398 | if (size != 64) |
f9c6b907 | 10399 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 10400 | break; |
d8e90251 | 10401 | // Fall through. |
dd93cd0a AM |
10402 | case elfcpp::R_POWERPC_TPREL16: |
10403 | case elfcpp::R_POWERPC_TPREL16_LO: | |
10404 | case elfcpp::R_POWERPC_TPREL16_HI: | |
10405 | case elfcpp::R_POWERPC_TPREL16_HA: | |
10406 | case elfcpp::R_POWERPC_TPREL: | |
10407 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
10408 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
10409 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
10410 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
10411 | // tls symbol values are relative to tls_segment()->vaddr() | |
10412 | value -= tp_offset; | |
10413 | break; | |
10414 | ||
10415 | case elfcpp::R_PPC64_DTPREL16_DS: | |
10416 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
10417 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
10418 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
10419 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
10420 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
10421 | if (size != 64) | |
10422 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
10423 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
10424 | break; | |
d8e90251 | 10425 | // Fall through. |
dd93cd0a AM |
10426 | case elfcpp::R_POWERPC_DTPREL16: |
10427 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
10428 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
10429 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
10430 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
10431 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
10432 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
10433 | // tls symbol values are relative to tls_segment()->vaddr() |
10434 | value -= dtp_offset; | |
10435 | break; | |
10436 | ||
45965137 AM |
10437 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
10438 | if (gsym != NULL) | |
10439 | value += object->ppc64_local_entry_offset(gsym); | |
10440 | else | |
10441 | value += object->ppc64_local_entry_offset(r_sym); | |
10442 | break; | |
10443 | ||
42cacb20 DE |
10444 | default: |
10445 | break; | |
10446 | } | |
10447 | ||
dd93cd0a | 10448 | Insn branch_bit = 0; |
42cacb20 DE |
10449 | switch (r_type) |
10450 | { | |
dd93cd0a AM |
10451 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
10452 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
10453 | branch_bit = 1 << 21; | |
d8e90251 | 10454 | // Fall through. |
dd93cd0a AM |
10455 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
10456 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
10457 | { | |
10458 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10459 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10460 | insn &= ~(1 << 21); | |
10461 | insn |= branch_bit; | |
10462 | if (this->is_isa_v2) | |
10463 | { | |
10464 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
10465 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10466 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
10467 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10468 | insn |= 0x02 << 21; | |
10469 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10470 | insn |= 0x08 << 21; | |
10471 | else | |
10472 | break; | |
10473 | } | |
10474 | else | |
10475 | { | |
10476 | // Invert 'y' bit if not the default. | |
10477 | if (static_cast<Signed_address>(value) < 0) | |
10478 | insn ^= 1 << 21; | |
10479 | } | |
10480 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10481 | } | |
10482 | break; | |
10483 | ||
08be3224 AM |
10484 | case elfcpp::R_POWERPC_PLT16_HA: |
10485 | if (size == 32 | |
10486 | && !parameters->options().output_is_position_independent()) | |
10487 | { | |
10488 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10489 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10490 | ||
10491 | // Convert addis to lis. | |
10492 | if ((insn & (0x3f << 26)) == 15u << 26 | |
10493 | && (insn & (0x1f << 16)) != 0) | |
10494 | { | |
10495 | insn &= ~(0x1f << 16); | |
10496 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10497 | } | |
10498 | } | |
10499 | break; | |
10500 | ||
dd93cd0a AM |
10501 | default: |
10502 | break; | |
10503 | } | |
10504 | ||
c9b8abb7 AM |
10505 | if (size == 64 |
10506 | && (gsym | |
10507 | ? relative_value_is_known(gsym) | |
10508 | : relative_value_is_known(psymval))) | |
aba6bc71 | 10509 | { |
aba6bc71 AM |
10510 | switch (r_type) |
10511 | { | |
10512 | default: | |
10513 | break; | |
10514 | ||
5edad15d AM |
10515 | // Multi-instruction sequences that access the GOT/TOC can |
10516 | // be optimized, eg. | |
10517 | // addis ra,r2,x@got@ha; ld rb,x@got@l(ra); | |
10518 | // to addis ra,r2,x@toc@ha; addi rb,ra,x@toc@l; | |
10519 | // and | |
10520 | // addis ra,r2,0; addi rb,ra,x@toc@l; | |
10521 | // to nop; addi rb,r2,x@toc; | |
aba6bc71 AM |
10522 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: |
10523 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
10524 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
10525 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
10526 | case elfcpp::R_POWERPC_GOT16_HA: | |
10527 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 10528 | if (parameters->options().toc_optimize()) |
aba6bc71 | 10529 | { |
dcfc7dd4 | 10530 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 10531 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
c9b8abb7 AM |
10532 | if ((r_type == elfcpp::R_PPC64_TOC16_HA |
10533 | && object->make_toc_relative(target, &value)) | |
10534 | || (r_type == elfcpp::R_POWERPC_GOT16_HA | |
10535 | && object->make_got_relative(target, psymval, | |
10536 | rela.get_r_addend(), | |
10537 | &value))) | |
5edad15d AM |
10538 | { |
10539 | gold_assert((insn & ((0x3f << 26) | 0x1f << 16)) | |
10540 | == ((15u << 26) | (2 << 16))); | |
10541 | } | |
10542 | if (((insn & ((0x3f << 26) | 0x1f << 16)) | |
10543 | == ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
10544 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
10545 | { |
10546 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10547 | return true; | |
10548 | } | |
10549 | } | |
10550 | break; | |
10551 | ||
10552 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
10553 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
10554 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
10555 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
10556 | case elfcpp::R_POWERPC_GOT16_LO: | |
10557 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
10558 | case elfcpp::R_PPC64_TOC16_LO: | |
10559 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 10560 | if (parameters->options().toc_optimize()) |
aba6bc71 | 10561 | { |
dcfc7dd4 | 10562 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 | 10563 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
5edad15d | 10564 | bool changed = false; |
c9b8abb7 AM |
10565 | if ((r_type == elfcpp::R_PPC64_TOC16_LO_DS |
10566 | && object->make_toc_relative(target, &value)) | |
10567 | || (r_type == elfcpp::R_PPC64_GOT16_LO_DS | |
10568 | && object->make_got_relative(target, psymval, | |
10569 | rela.get_r_addend(), | |
10570 | &value))) | |
5edad15d AM |
10571 | { |
10572 | gold_assert ((insn & (0x3f << 26)) == 58u << 26 /* ld */); | |
10573 | insn ^= (14u << 26) ^ (58u << 26); | |
10574 | r_type = elfcpp::R_PPC64_TOC16_LO; | |
10575 | changed = true; | |
10576 | } | |
10577 | if (ok_lo_toc_insn(insn, r_type) | |
10578 | && value + 0x8000 < 0x10000) | |
aba6bc71 AM |
10579 | { |
10580 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
10581 | { | |
10582 | // Transform addic to addi when we change reg. | |
10583 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
10584 | insn |= (14u << 26) | (2 << 16); | |
10585 | } | |
10586 | else | |
10587 | { | |
10588 | insn &= ~(0x1f << 16); | |
10589 | insn |= 2 << 16; | |
10590 | } | |
5edad15d | 10591 | changed = true; |
aba6bc71 | 10592 | } |
5edad15d AM |
10593 | if (changed) |
10594 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
aba6bc71 AM |
10595 | } |
10596 | break; | |
549dba71 | 10597 | |
c9b8abb7 AM |
10598 | case elfcpp::R_PPC64_GOT_PCREL34: |
10599 | if (parameters->options().toc_optimize()) | |
10600 | { | |
10601 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10602 | uint64_t insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10603 | insn <<= 32; | |
10604 | insn |= elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10605 | if ((insn & ((-1ULL << 50) | (63ULL << 26))) | |
10606 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
10607 | break; | |
10608 | ||
10609 | Address relval = psymval->value(object, rela.get_r_addend()); | |
10610 | relval -= address; | |
10611 | if (relval + (1ULL << 33) < 1ULL << 34) | |
10612 | { | |
10613 | value = relval; | |
10614 | // Replace with paddi | |
10615 | insn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
10616 | elfcpp::Swap<32, big_endian>::writeval(iview, insn >> 32); | |
10617 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, | |
10618 | insn & 0xffffffff); | |
10619 | } | |
10620 | } | |
10621 | break; | |
10622 | ||
9a23f96e AM |
10623 | case elfcpp::R_POWERPC_TPREL16_HA: |
10624 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
10625 | { | |
10626 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10627 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10628 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
10629 | != ((15u << 26) | ((size == 32 ? 2 : 13) << 16))) | |
10630 | ; | |
10631 | else | |
10632 | { | |
10633 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
10634 | return true; | |
10635 | } | |
10636 | } | |
10637 | break; | |
10638 | ||
10639 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
10640 | if (size == 32) | |
10641 | // R_PPC_TLSGD, R_PPC_TLSLD | |
10642 | break; | |
10643 | // Fall through. | |
10644 | case elfcpp::R_POWERPC_TPREL16_LO: | |
10645 | if (parameters->options().tls_optimize() && value + 0x8000 < 0x10000) | |
10646 | { | |
10647 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); | |
10648 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
10649 | insn &= ~(0x1f << 16); | |
10650 | insn |= (size == 32 ? 2 : 13) << 16; | |
10651 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
10652 | } | |
10653 | break; | |
10654 | ||
549dba71 AM |
10655 | case elfcpp::R_PPC64_ENTRY: |
10656 | value = (target->got_section()->output_section()->address() | |
10657 | + object->toc_base_offset()); | |
10658 | if (value + 0x80008000 <= 0xffffffff | |
10659 | && !parameters->options().output_is_position_independent()) | |
10660 | { | |
10661 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10662 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
10663 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10664 | ||
10665 | if ((insn1 & ~0xfffc) == ld_2_12 | |
10666 | && insn2 == add_2_2_12) | |
10667 | { | |
10668 | insn1 = lis_2 + ha(value); | |
10669 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
10670 | insn2 = addi_2_2 + l(value); | |
10671 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
10672 | return true; | |
10673 | } | |
10674 | } | |
10675 | else | |
10676 | { | |
10677 | value -= address; | |
10678 | if (value + 0x80008000 <= 0xffffffff) | |
10679 | { | |
10680 | Insn* iview = reinterpret_cast<Insn*>(view); | |
10681 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
10682 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
10683 | ||
10684 | if ((insn1 & ~0xfffc) == ld_2_12 | |
10685 | && insn2 == add_2_2_12) | |
10686 | { | |
10687 | insn1 = addis_2_12 + ha(value); | |
10688 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
10689 | insn2 = addi_2_2 + l(value); | |
10690 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
10691 | return true; | |
10692 | } | |
10693 | } | |
10694 | } | |
10695 | break; | |
e3a7574e AM |
10696 | |
10697 | case elfcpp::R_POWERPC_REL16_LO: | |
10698 | // If we are generating a non-PIC executable, edit | |
10699 | // 0: addis 2,12,.TOC.-0b@ha | |
10700 | // addi 2,2,.TOC.-0b@l | |
10701 | // used by ELFv2 global entry points to set up r2, to | |
10702 | // lis 2,.TOC.@ha | |
10703 | // addi 2,2,.TOC.@l | |
10704 | // if .TOC. is in range. */ | |
10705 | if (value + address - 4 + 0x80008000 <= 0xffffffff | |
f60c61e6 | 10706 | && relnum + 1 > 1 |
e3a7574e AM |
10707 | && preloc != NULL |
10708 | && target->abiversion() >= 2 | |
10709 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 10710 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
10711 | && gsym != NULL |
10712 | && strcmp(gsym->name(), ".TOC.") == 0) | |
10713 | { | |
0e123f69 | 10714 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
10715 | Reltype prev_rela(preloc - reloc_size); |
10716 | if ((prev_rela.get_r_info() | |
10717 | == elfcpp::elf_r_info<size>(r_sym, | |
10718 | elfcpp::R_POWERPC_REL16_HA)) | |
10719 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
10720 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
10721 | { | |
dcfc7dd4 | 10722 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
10723 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
10724 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
10725 | ||
10726 | if ((insn1 & 0xffff0000) == addis_2_12 | |
10727 | && (insn2 & 0xffff0000) == addi_2_2) | |
10728 | { | |
10729 | insn1 = lis_2 + ha(value + address - 4); | |
10730 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
10731 | insn2 = addi_2_2 + l(value + address - 4); | |
10732 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
10733 | if (relinfo->rr) | |
10734 | { | |
10735 | relinfo->rr->set_strategy(relnum - 1, | |
10736 | Relocatable_relocs::RELOC_SPECIAL); | |
10737 | relinfo->rr->set_strategy(relnum, | |
10738 | Relocatable_relocs::RELOC_SPECIAL); | |
10739 | } | |
10740 | return true; | |
10741 | } | |
10742 | } | |
10743 | } | |
10744 | break; | |
aba6bc71 AM |
10745 | } |
10746 | } | |
10747 | ||
f4baf0d4 | 10748 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 10749 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
10750 | switch (r_type) |
10751 | { | |
10752 | case elfcpp::R_POWERPC_ADDR32: | |
10753 | case elfcpp::R_POWERPC_UADDR32: | |
10754 | if (size == 64) | |
f4baf0d4 | 10755 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
10756 | break; |
10757 | ||
10758 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 10759 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 10760 | if (size == 64) |
f4baf0d4 | 10761 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
10762 | break; |
10763 | ||
dd93cd0a | 10764 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 10765 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
10766 | break; |
10767 | ||
b80eed39 AM |
10768 | case elfcpp::R_POWERPC_ADDR16: |
10769 | // We really should have three separate relocations, | |
10770 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
10771 | // and one for insns with 16-bit unsigned fields. | |
10772 | overflow = Reloc::CHECK_BITFIELD; | |
10773 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
10774 | overflow = Reloc::CHECK_LOW_INSN; | |
10775 | break; | |
10776 | ||
f9c6b907 AM |
10777 | case elfcpp::R_POWERPC_ADDR16_HI: |
10778 | case elfcpp::R_POWERPC_ADDR16_HA: | |
10779 | case elfcpp::R_POWERPC_GOT16_HI: | |
10780 | case elfcpp::R_POWERPC_GOT16_HA: | |
10781 | case elfcpp::R_POWERPC_PLT16_HI: | |
10782 | case elfcpp::R_POWERPC_PLT16_HA: | |
10783 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
10784 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
10785 | case elfcpp::R_PPC64_TOC16_HI: | |
10786 | case elfcpp::R_PPC64_TOC16_HA: | |
10787 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
10788 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
10789 | case elfcpp::R_POWERPC_TPREL16_HI: | |
10790 | case elfcpp::R_POWERPC_TPREL16_HA: | |
10791 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
10792 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
10793 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
10794 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
10795 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
10796 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
10797 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
10798 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
10799 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
10800 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
10801 | case elfcpp::R_POWERPC_REL16_HI: | |
10802 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
10803 | if (size != 32) |
10804 | overflow = Reloc::CHECK_HIGH_INSN; | |
10805 | break; | |
10806 | ||
dd93cd0a AM |
10807 | case elfcpp::R_POWERPC_REL16: |
10808 | case elfcpp::R_PPC64_TOC16: | |
10809 | case elfcpp::R_POWERPC_GOT16: | |
10810 | case elfcpp::R_POWERPC_SECTOFF: | |
10811 | case elfcpp::R_POWERPC_TPREL16: | |
10812 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
10813 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
10814 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
10815 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
10816 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
10817 | overflow = Reloc::CHECK_LOW_INSN; | |
10818 | break; | |
10819 | ||
32f59844 AM |
10820 | case elfcpp::R_PPC64_REL24_NOTOC: |
10821 | if (size == 32) | |
10822 | break; | |
10823 | // Fall through. | |
b80eed39 AM |
10824 | case elfcpp::R_POWERPC_ADDR24: |
10825 | case elfcpp::R_POWERPC_ADDR14: | |
10826 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
10827 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
10828 | case elfcpp::R_PPC64_ADDR16_DS: | |
10829 | case elfcpp::R_POWERPC_REL24: | |
10830 | case elfcpp::R_PPC_PLTREL24: | |
10831 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
10832 | case elfcpp::R_PPC64_TPREL16_DS: |
10833 | case elfcpp::R_PPC64_DTPREL16_DS: | |
10834 | case elfcpp::R_PPC64_TOC16_DS: | |
10835 | case elfcpp::R_PPC64_GOT16_DS: | |
10836 | case elfcpp::R_PPC64_SECTOFF_DS: | |
10837 | case elfcpp::R_POWERPC_REL14: | |
10838 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
10839 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
e4dff765 AM |
10840 | case elfcpp::R_PPC64_D34: |
10841 | case elfcpp::R_PPC64_PCREL34: | |
10842 | case elfcpp::R_PPC64_GOT_PCREL34: | |
10843 | case elfcpp::R_PPC64_PLT_PCREL34: | |
10844 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
10845 | case elfcpp::R_PPC64_D28: | |
10846 | case elfcpp::R_PPC64_PCREL28: | |
f4baf0d4 | 10847 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 10848 | break; |
dd93cd0a | 10849 | } |
42cacb20 | 10850 | |
dcfc7dd4 | 10851 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
10852 | Insn insn = 0; |
10853 | ||
b80eed39 AM |
10854 | if (overflow == Reloc::CHECK_LOW_INSN |
10855 | || overflow == Reloc::CHECK_HIGH_INSN) | |
10856 | { | |
a680de9a | 10857 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 10858 | |
a47622ac AM |
10859 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
10860 | overflow = Reloc::CHECK_BITFIELD; | |
10861 | else if (overflow == Reloc::CHECK_LOW_INSN | |
10862 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
10863 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
10864 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
10865 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
10866 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
10867 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 10868 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
10869 | else |
10870 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
10871 | } |
10872 | ||
a680de9a | 10873 | bool maybe_dq_reloc = false; |
3ea0a085 | 10874 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 10875 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
10876 | switch (r_type) |
10877 | { | |
10878 | case elfcpp::R_POWERPC_NONE: | |
10879 | case elfcpp::R_POWERPC_TLS: | |
10880 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
10881 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
23cedd1d AM |
10882 | case elfcpp::R_POWERPC_PLTSEQ: |
10883 | case elfcpp::R_POWERPC_PLTCALL: | |
32f59844 AM |
10884 | case elfcpp::R_PPC64_PLTSEQ_NOTOC: |
10885 | case elfcpp::R_PPC64_PLTCALL_NOTOC: | |
e4dff765 | 10886 | case elfcpp::R_PPC64_PCREL_OPT: |
42cacb20 DE |
10887 | break; |
10888 | ||
10889 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 10890 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 10891 | case elfcpp::R_PPC64_TOC: |
45965137 | 10892 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
10893 | Reloc::addr64(view, value); |
10894 | break; | |
10895 | ||
10896 | case elfcpp::R_POWERPC_TPREL: | |
10897 | case elfcpp::R_POWERPC_DTPREL: | |
10898 | if (size == 64) | |
10899 | Reloc::addr64(view, value); | |
10900 | else | |
3ea0a085 | 10901 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
10902 | break; |
10903 | ||
10904 | case elfcpp::R_PPC64_UADDR64: | |
10905 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
10906 | break; |
10907 | ||
10908 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 10909 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
10910 | break; |
10911 | ||
acc276d8 | 10912 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 10913 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 10914 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
10915 | break; |
10916 | ||
32f59844 AM |
10917 | case elfcpp::R_PPC64_REL24_NOTOC: |
10918 | if (size == 32) | |
10919 | goto unsupp; // R_PPC_EMB_RELSDA | |
10920 | // Fall through. | |
dd93cd0a AM |
10921 | case elfcpp::R_POWERPC_ADDR24: |
10922 | case elfcpp::R_POWERPC_REL24: | |
10923 | case elfcpp::R_PPC_PLTREL24: | |
10924 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 10925 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
10926 | break; |
10927 | ||
dd93cd0a AM |
10928 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
10929 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
10930 | case elfcpp::R_POWERPC_GOT_TPREL16: |
10931 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
10932 | if (size == 64) |
10933 | { | |
ec86f434 | 10934 | // On ppc64 these are all ds form |
a680de9a | 10935 | maybe_dq_reloc = true; |
dd93cd0a AM |
10936 | break; |
10937 | } | |
c25aa1e1 | 10938 | // Fall through. |
cf43a2fe | 10939 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 10940 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 10941 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 10942 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 10943 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
10944 | case elfcpp::R_POWERPC_TPREL16: |
10945 | case elfcpp::R_POWERPC_DTPREL16: | |
10946 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
10947 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 10948 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 10949 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 10950 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 10951 | case elfcpp::R_POWERPC_GOT16_LO: |
08be3224 | 10952 | case elfcpp::R_POWERPC_PLT16_LO: |
cf43a2fe | 10953 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
10954 | case elfcpp::R_POWERPC_TPREL16_LO: |
10955 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
10956 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
10957 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
10958 | if (size == 64) |
10959 | status = Reloc::addr16(view, value, overflow); | |
10960 | else | |
10961 | maybe_dq_reloc = true; | |
dd93cd0a AM |
10962 | break; |
10963 | ||
10964 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 10965 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
10966 | break; |
10967 | ||
f9c6b907 AM |
10968 | case elfcpp::R_PPC64_ADDR16_HIGH: |
10969 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
10970 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
10971 | if (size == 32) | |
10972 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
10973 | goto unsupp; | |
d8e90251 | 10974 | // Fall through. |
cf43a2fe | 10975 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 10976 | case elfcpp::R_POWERPC_REL16_HI: |
c432bbba | 10977 | case elfcpp::R_PPC64_REL16_HIGH: |
cf43a2fe | 10978 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 10979 | case elfcpp::R_POWERPC_GOT16_HI: |
08be3224 | 10980 | case elfcpp::R_POWERPC_PLT16_HI: |
cf43a2fe | 10981 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
10982 | case elfcpp::R_POWERPC_TPREL16_HI: |
10983 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
10984 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
10985 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
10986 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
10987 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
10988 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
10989 | break; |
10990 | ||
f9c6b907 AM |
10991 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
10992 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
10993 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
10994 | if (size == 32) | |
10995 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
10996 | goto unsupp; | |
d8e90251 | 10997 | // Fall through. |
cf43a2fe | 10998 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 10999 | case elfcpp::R_POWERPC_REL16_HA: |
c432bbba | 11000 | case elfcpp::R_PPC64_REL16_HIGHA: |
cf43a2fe | 11001 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 11002 | case elfcpp::R_POWERPC_GOT16_HA: |
08be3224 | 11003 | case elfcpp::R_POWERPC_PLT16_HA: |
cf43a2fe | 11004 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
11005 | case elfcpp::R_POWERPC_TPREL16_HA: |
11006 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
11007 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
11008 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
11009 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
11010 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
11011 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
11012 | break; |
11013 | ||
a680de9a PB |
11014 | case elfcpp::R_POWERPC_REL16DX_HA: |
11015 | status = Reloc::addr16dx_ha(view, value, overflow); | |
11016 | break; | |
11017 | ||
dd93cd0a AM |
11018 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
11019 | if (size == 32) | |
11020 | // R_PPC_EMB_NADDR16_LO | |
11021 | goto unsupp; | |
d8e90251 | 11022 | // Fall through. |
dd93cd0a | 11023 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
c432bbba | 11024 | case elfcpp::R_PPC64_REL16_HIGHER: |
dd93cd0a AM |
11025 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
11026 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
11027 | break; |
11028 | ||
dd93cd0a AM |
11029 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
11030 | if (size == 32) | |
11031 | // R_PPC_EMB_NADDR16_HI | |
11032 | goto unsupp; | |
d8e90251 | 11033 | // Fall through. |
dd93cd0a | 11034 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
c432bbba | 11035 | case elfcpp::R_PPC64_REL16_HIGHERA: |
dd93cd0a AM |
11036 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
11037 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
11038 | break; |
11039 | ||
dd93cd0a AM |
11040 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
11041 | if (size == 32) | |
11042 | // R_PPC_EMB_NADDR16_HA | |
11043 | goto unsupp; | |
d8e90251 | 11044 | // Fall through. |
dd93cd0a | 11045 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
c432bbba | 11046 | case elfcpp::R_PPC64_REL16_HIGHEST: |
dd93cd0a AM |
11047 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
11048 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
11049 | break; |
11050 | ||
dd93cd0a AM |
11051 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
11052 | if (size == 32) | |
11053 | // R_PPC_EMB_SDAI16 | |
11054 | goto unsupp; | |
d8e90251 | 11055 | // Fall through. |
dd93cd0a | 11056 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
c432bbba | 11057 | case elfcpp::R_PPC64_REL16_HIGHESTA: |
dd93cd0a AM |
11058 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
11059 | Reloc::addr16_ha3(view, value); | |
11060 | break; | |
11061 | ||
11062 | case elfcpp::R_PPC64_DTPREL16_DS: | |
11063 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
11064 | if (size == 32) | |
11065 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
11066 | goto unsupp; | |
d8e90251 | 11067 | // Fall through. |
dd93cd0a AM |
11068 | case elfcpp::R_PPC64_TPREL16_DS: |
11069 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
11070 | if (size == 32) | |
11071 | // R_PPC_TLSGD, R_PPC_TLSLD | |
11072 | break; | |
d8e90251 | 11073 | // Fall through. |
cf43a2fe AM |
11074 | case elfcpp::R_PPC64_ADDR16_DS: |
11075 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
11076 | case elfcpp::R_PPC64_TOC16_DS: |
11077 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
11078 | case elfcpp::R_PPC64_GOT16_DS: |
11079 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
08be3224 | 11080 | case elfcpp::R_PPC64_PLT16_LO_DS: |
cf43a2fe AM |
11081 | case elfcpp::R_PPC64_SECTOFF_DS: |
11082 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 11083 | maybe_dq_reloc = true; |
dd93cd0a AM |
11084 | break; |
11085 | ||
11086 | case elfcpp::R_POWERPC_ADDR14: | |
11087 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
11088 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
11089 | case elfcpp::R_POWERPC_REL14: | |
11090 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
11091 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 11092 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
11093 | break; |
11094 | ||
11095 | case elfcpp::R_POWERPC_COPY: | |
11096 | case elfcpp::R_POWERPC_GLOB_DAT: | |
11097 | case elfcpp::R_POWERPC_JMP_SLOT: | |
11098 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 11099 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
11100 | case elfcpp::R_PPC64_JMP_IREL: |
11101 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
11102 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
11103 | _("unexpected reloc %u in object file"), | |
11104 | r_type); | |
11105 | break; | |
11106 | ||
7e57d19e | 11107 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a | 11108 | if (size == 32) |
7e57d19e | 11109 | // R_PPC_EMB_SDA21 |
dd93cd0a AM |
11110 | goto unsupp; |
11111 | else | |
11112 | { | |
7e57d19e AM |
11113 | Symbol_location loc; |
11114 | loc.object = relinfo->object; | |
11115 | loc.shndx = relinfo->data_shndx; | |
11116 | loc.offset = rela.get_r_offset(); | |
11117 | Tocsave_loc::const_iterator p = target->tocsave_loc().find(loc); | |
11118 | if (p != target->tocsave_loc().end()) | |
11119 | { | |
11120 | // If we've generated plt calls using this tocsave, then | |
11121 | // the nop needs to be changed to save r2. | |
11122 | Insn* iview = reinterpret_cast<Insn*>(view); | |
11123 | if (elfcpp::Swap<32, big_endian>::readval(iview) == nop) | |
11124 | elfcpp::Swap<32, big_endian>:: | |
11125 | writeval(iview, std_2_1 + target->stk_toc()); | |
11126 | } | |
dd93cd0a AM |
11127 | } |
11128 | break; | |
11129 | ||
11130 | case elfcpp::R_PPC_EMB_SDA2I16: | |
11131 | case elfcpp::R_PPC_EMB_SDA2REL: | |
11132 | if (size == 32) | |
11133 | goto unsupp; | |
11134 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
11135 | break; |
11136 | ||
e4dff765 AM |
11137 | case elfcpp::R_PPC64_D34: |
11138 | case elfcpp::R_PPC64_D34_LO: | |
11139 | case elfcpp::R_PPC64_PCREL34: | |
11140 | case elfcpp::R_PPC64_GOT_PCREL34: | |
11141 | case elfcpp::R_PPC64_PLT_PCREL34: | |
11142 | case elfcpp::R_PPC64_PLT_PCREL34_NOTOC: | |
11143 | if (size == 32) | |
11144 | goto unsupp; | |
11145 | status = Reloc::addr34(view, value, overflow); | |
11146 | break; | |
11147 | ||
11148 | case elfcpp::R_PPC64_D34_HI30: | |
11149 | if (size == 32) | |
11150 | goto unsupp; | |
11151 | Reloc::addr34_hi(view, value); | |
11152 | break; | |
11153 | ||
11154 | case elfcpp::R_PPC64_D34_HA30: | |
11155 | if (size == 32) | |
11156 | goto unsupp; | |
11157 | Reloc::addr34_ha(view, value); | |
11158 | break; | |
11159 | ||
11160 | case elfcpp::R_PPC64_D28: | |
11161 | case elfcpp::R_PPC64_PCREL28: | |
11162 | if (size == 32) | |
11163 | goto unsupp; | |
11164 | status = Reloc::addr28(view, value, overflow); | |
11165 | break; | |
11166 | ||
11167 | case elfcpp::R_PPC64_ADDR16_HIGHER34: | |
11168 | case elfcpp::R_PPC64_REL16_HIGHER34: | |
11169 | if (size == 32) | |
11170 | goto unsupp; | |
11171 | Reloc::addr16_higher34(view, value); | |
11172 | break; | |
11173 | ||
11174 | case elfcpp::R_PPC64_ADDR16_HIGHERA34: | |
11175 | case elfcpp::R_PPC64_REL16_HIGHERA34: | |
11176 | if (size == 32) | |
11177 | goto unsupp; | |
11178 | Reloc::addr16_highera34(view, value); | |
11179 | break; | |
11180 | ||
11181 | case elfcpp::R_PPC64_ADDR16_HIGHEST34: | |
11182 | case elfcpp::R_PPC64_REL16_HIGHEST34: | |
11183 | if (size == 32) | |
11184 | goto unsupp; | |
11185 | Reloc::addr16_highest34(view, value); | |
11186 | break; | |
11187 | ||
11188 | case elfcpp::R_PPC64_ADDR16_HIGHESTA34: | |
11189 | case elfcpp::R_PPC64_REL16_HIGHESTA34: | |
11190 | if (size == 32) | |
11191 | goto unsupp; | |
11192 | Reloc::addr16_highesta34(view, value); | |
11193 | break; | |
11194 | ||
dd93cd0a AM |
11195 | case elfcpp::R_POWERPC_PLT32: |
11196 | case elfcpp::R_POWERPC_PLTREL32: | |
dd93cd0a AM |
11197 | case elfcpp::R_PPC_SDAREL16: |
11198 | case elfcpp::R_POWERPC_ADDR30: | |
11199 | case elfcpp::R_PPC64_PLT64: | |
11200 | case elfcpp::R_PPC64_PLTREL64: | |
11201 | case elfcpp::R_PPC64_PLTGOT16: | |
11202 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
11203 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
11204 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
dd93cd0a AM |
11205 | case elfcpp::R_PPC64_PLTGOT16_DS: |
11206 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a | 11207 | case elfcpp::R_PPC_TOC16: |
42cacb20 | 11208 | default: |
dd93cd0a | 11209 | unsupp: |
42cacb20 DE |
11210 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
11211 | _("unsupported reloc %u"), | |
11212 | r_type); | |
11213 | break; | |
11214 | } | |
a680de9a PB |
11215 | |
11216 | if (maybe_dq_reloc) | |
11217 | { | |
11218 | if (insn == 0) | |
11219 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
11220 | ||
11221 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
11222 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
11223 | && (insn & 3) == 1)) | |
11224 | status = Reloc::addr16_dq(view, value, overflow); | |
11225 | else if (size == 64 | |
11226 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
11227 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
11228 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
11229 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
11230 | status = Reloc::addr16_ds(view, value, overflow); | |
11231 | else | |
11232 | status = Reloc::addr16(view, value, overflow); | |
11233 | } | |
11234 | ||
0cfb0717 | 11235 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
11236 | && (has_stub_value |
11237 | || !(gsym != NULL | |
282c9750 | 11238 | && gsym->is_undefined() |
32f59844 | 11239 | && is_branch_reloc<size>(r_type)))) |
0cfb0717 AM |
11240 | { |
11241 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
11242 | _("relocation overflow")); | |
11243 | if (has_stub_value) | |
11244 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
11245 | } | |
42cacb20 DE |
11246 | |
11247 | return true; | |
11248 | } | |
11249 | ||
42cacb20 DE |
11250 | // Relocate section data. |
11251 | ||
11252 | template<int size, bool big_endian> | |
11253 | void | |
11254 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
11255 | const Relocate_info<size, big_endian>* relinfo, |
11256 | unsigned int sh_type, | |
11257 | const unsigned char* prelocs, | |
11258 | size_t reloc_count, | |
11259 | Output_section* output_section, | |
11260 | bool needs_special_offset_handling, | |
11261 | unsigned char* view, | |
c9269dff | 11262 | Address address, |
d83ce4e3 AM |
11263 | section_size_type view_size, |
11264 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
11265 | { |
11266 | typedef Target_powerpc<size, big_endian> Powerpc; | |
11267 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
11268 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
11269 | Powerpc_comdat_behavior; | |
4d625b70 CC |
11270 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
11271 | Classify_reloc; | |
42cacb20 DE |
11272 | |
11273 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
11274 | ||
4d625b70 CC |
11275 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
11276 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
11277 | relinfo, |
11278 | this, | |
11279 | prelocs, | |
11280 | reloc_count, | |
11281 | output_section, | |
11282 | needs_special_offset_handling, | |
11283 | view, | |
11284 | address, | |
364c7fa5 ILT |
11285 | view_size, |
11286 | reloc_symbol_changes); | |
42cacb20 DE |
11287 | } |
11288 | ||
4d625b70 | 11289 | template<int size, bool big_endian> |
cf43a2fe | 11290 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 11291 | { |
cf43a2fe | 11292 | public: |
0e123f69 AM |
11293 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
11294 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
11295 | static const int sh_type = elfcpp::SHT_RELA; |
11296 | ||
11297 | // Return the symbol referred to by the relocation. | |
11298 | static inline unsigned int | |
11299 | get_r_sym(const Reltype* reloc) | |
11300 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
11301 | ||
11302 | // Return the type of the relocation. | |
11303 | static inline unsigned int | |
11304 | get_r_type(const Reltype* reloc) | |
11305 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
11306 | ||
cf43a2fe AM |
11307 | // Return the strategy to use for a local symbol which is not a |
11308 | // section symbol, given the relocation type. | |
11309 | inline Relocatable_relocs::Reloc_strategy | |
11310 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
11311 | { | |
11312 | if (r_type == 0 && r_sym == 0) | |
11313 | return Relocatable_relocs::RELOC_DISCARD; | |
11314 | return Relocatable_relocs::RELOC_COPY; | |
11315 | } | |
11316 | ||
11317 | // Return the strategy to use for a local symbol which is a section | |
11318 | // symbol, given the relocation type. | |
11319 | inline Relocatable_relocs::Reloc_strategy | |
11320 | local_section_strategy(unsigned int, Relobj*) | |
11321 | { | |
11322 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
11323 | } | |
11324 | ||
11325 | // Return the strategy to use for a global symbol, given the | |
11326 | // relocation type, the object, and the symbol index. | |
11327 | inline Relocatable_relocs::Reloc_strategy | |
11328 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
11329 | { | |
08be3224 AM |
11330 | if (size == 32 |
11331 | && (r_type == elfcpp::R_PPC_PLTREL24 | |
11332 | || r_type == elfcpp::R_POWERPC_PLT16_LO | |
11333 | || r_type == elfcpp::R_POWERPC_PLT16_HI | |
11334 | || r_type == elfcpp::R_POWERPC_PLT16_HA)) | |
cf43a2fe AM |
11335 | return Relocatable_relocs::RELOC_SPECIAL; |
11336 | return Relocatable_relocs::RELOC_COPY; | |
11337 | } | |
11338 | }; | |
42cacb20 DE |
11339 | |
11340 | // Scan the relocs during a relocatable link. | |
11341 | ||
11342 | template<int size, bool big_endian> | |
11343 | void | |
11344 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
11345 | Symbol_table* symtab, |
11346 | Layout* layout, | |
11347 | Sized_relobj_file<size, big_endian>* object, | |
11348 | unsigned int data_shndx, | |
11349 | unsigned int sh_type, | |
11350 | const unsigned char* prelocs, | |
11351 | size_t reloc_count, | |
11352 | Output_section* output_section, | |
11353 | bool needs_special_offset_handling, | |
11354 | size_t local_symbol_count, | |
11355 | const unsigned char* plocal_symbols, | |
11356 | Relocatable_relocs* rr) | |
42cacb20 | 11357 | { |
4d625b70 CC |
11358 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
11359 | ||
42cacb20 DE |
11360 | gold_assert(sh_type == elfcpp::SHT_RELA); |
11361 | ||
4d625b70 | 11362 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
11363 | symtab, |
11364 | layout, | |
11365 | object, | |
11366 | data_shndx, | |
11367 | prelocs, | |
11368 | reloc_count, | |
11369 | output_section, | |
11370 | needs_special_offset_handling, | |
11371 | local_symbol_count, | |
11372 | plocal_symbols, | |
11373 | rr); | |
11374 | } | |
11375 | ||
4d625b70 CC |
11376 | // Scan the relocs for --emit-relocs. |
11377 | ||
11378 | template<int size, bool big_endian> | |
11379 | void | |
11380 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
11381 | Symbol_table* symtab, | |
11382 | Layout* layout, | |
11383 | Sized_relobj_file<size, big_endian>* object, | |
11384 | unsigned int data_shndx, | |
11385 | unsigned int sh_type, | |
11386 | const unsigned char* prelocs, | |
11387 | size_t reloc_count, | |
11388 | Output_section* output_section, | |
11389 | bool needs_special_offset_handling, | |
11390 | size_t local_symbol_count, | |
11391 | const unsigned char* plocal_syms, | |
11392 | Relocatable_relocs* rr) | |
11393 | { | |
11394 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
11395 | Classify_reloc; | |
11396 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
11397 | Emit_relocs_strategy; | |
11398 | ||
11399 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
11400 | ||
11401 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
11402 | symtab, | |
11403 | layout, | |
11404 | object, | |
11405 | data_shndx, | |
11406 | prelocs, | |
11407 | reloc_count, | |
11408 | output_section, | |
11409 | needs_special_offset_handling, | |
11410 | local_symbol_count, | |
11411 | plocal_syms, | |
11412 | rr); | |
11413 | } | |
11414 | ||
7404fe1b | 11415 | // Emit relocations for a section. |
dd93cd0a AM |
11416 | // This is a modified version of the function by the same name in |
11417 | // target-reloc.h. Using relocate_special_relocatable for | |
11418 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
11419 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
11420 | |
11421 | template<int size, bool big_endian> | |
11422 | void | |
7404fe1b | 11423 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
11424 | const Relocate_info<size, big_endian>* relinfo, |
11425 | unsigned int sh_type, | |
11426 | const unsigned char* prelocs, | |
11427 | size_t reloc_count, | |
11428 | Output_section* output_section, | |
62fe925a | 11429 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 11430 | unsigned char*, |
dd93cd0a | 11431 | Address view_address, |
cf43a2fe | 11432 | section_size_type, |
42cacb20 DE |
11433 | unsigned char* reloc_view, |
11434 | section_size_type reloc_view_size) | |
11435 | { | |
11436 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
11437 | ||
0e123f69 AM |
11438 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
11439 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
11440 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
11441 | // Offset from start of insn to d-field reloc. |
11442 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
11443 | |
11444 | Powerpc_relobj<size, big_endian>* const object | |
11445 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
11446 | const unsigned int local_count = object->local_symbol_count(); | |
11447 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 11448 | Address got2_addend = 0; |
cf43a2fe | 11449 | if (got2_shndx != 0) |
c9269dff AM |
11450 | { |
11451 | got2_addend = object->get_output_section_offset(got2_shndx); | |
11452 | gold_assert(got2_addend != invalid_address); | |
11453 | } | |
cf43a2fe | 11454 | |
033bfb73 CC |
11455 | const bool relocatable = parameters->options().relocatable(); |
11456 | ||
cf43a2fe | 11457 | unsigned char* pwrite = reloc_view; |
7404fe1b | 11458 | bool zap_next = false; |
cf43a2fe AM |
11459 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
11460 | { | |
91a65d2f | 11461 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
11462 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
11463 | continue; | |
11464 | ||
11465 | Reltype reloc(prelocs); | |
11466 | Reltype_write reloc_write(pwrite); | |
11467 | ||
7404fe1b | 11468 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 11469 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
11470 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
11471 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
11472 | const unsigned int orig_r_sym = r_sym; | |
11473 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
11474 | = reloc.get_r_addend(); | |
11475 | const Symbol* gsym = NULL; | |
11476 | ||
11477 | if (zap_next) | |
11478 | { | |
11479 | // We could arrange to discard these and other relocs for | |
11480 | // tls optimised sequences in the strategy methods, but for | |
11481 | // now do as BFD ld does. | |
11482 | r_type = elfcpp::R_POWERPC_NONE; | |
11483 | zap_next = false; | |
11484 | } | |
cf43a2fe AM |
11485 | |
11486 | // Get the new symbol index. | |
9215b98b | 11487 | Output_section* os = NULL; |
cf43a2fe AM |
11488 | if (r_sym < local_count) |
11489 | { | |
11490 | switch (strategy) | |
11491 | { | |
11492 | case Relocatable_relocs::RELOC_COPY: | |
11493 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 11494 | if (r_sym != 0) |
dd93cd0a | 11495 | { |
7404fe1b AM |
11496 | r_sym = object->symtab_index(r_sym); |
11497 | gold_assert(r_sym != -1U); | |
dd93cd0a | 11498 | } |
cf43a2fe AM |
11499 | break; |
11500 | ||
11501 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
11502 | { | |
11503 | // We are adjusting a section symbol. We need to find | |
11504 | // the symbol table index of the section symbol for | |
11505 | // the output section corresponding to input section | |
11506 | // in which this symbol is defined. | |
11507 | gold_assert(r_sym < local_count); | |
11508 | bool is_ordinary; | |
11509 | unsigned int shndx = | |
11510 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
11511 | gold_assert(is_ordinary); | |
9215b98b | 11512 | os = object->output_section(shndx); |
cf43a2fe AM |
11513 | gold_assert(os != NULL); |
11514 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 11515 | r_sym = os->symtab_index(); |
cf43a2fe AM |
11516 | } |
11517 | break; | |
11518 | ||
11519 | default: | |
11520 | gold_unreachable(); | |
11521 | } | |
11522 | } | |
11523 | else | |
11524 | { | |
7404fe1b | 11525 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
11526 | gold_assert(gsym != NULL); |
11527 | if (gsym->is_forwarder()) | |
11528 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
11529 | ||
11530 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 11531 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
11532 | } |
11533 | ||
11534 | // Get the new offset--the location in the output section where | |
11535 | // this relocation should be applied. | |
cf43a2fe | 11536 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 11537 | offset += offset_in_output_section; |
cf43a2fe AM |
11538 | else |
11539 | { | |
c9269dff AM |
11540 | section_offset_type sot_offset = |
11541 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 11542 | section_offset_type new_sot_offset = |
c9269dff AM |
11543 | output_section->output_offset(object, relinfo->data_shndx, |
11544 | sot_offset); | |
cf43a2fe | 11545 | gold_assert(new_sot_offset != -1); |
7404fe1b | 11546 | offset = new_sot_offset; |
cf43a2fe AM |
11547 | } |
11548 | ||
dd93cd0a AM |
11549 | // In an object file, r_offset is an offset within the section. |
11550 | // In an executable or dynamic object, generated by | |
11551 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 11552 | if (!relocatable) |
dd93cd0a | 11553 | { |
7404fe1b | 11554 | offset += view_address; |
dd93cd0a | 11555 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 11556 | offset -= offset_in_output_section; |
dd93cd0a AM |
11557 | } |
11558 | ||
cf43a2fe | 11559 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
11560 | if (strategy == Relocatable_relocs::RELOC_COPY) |
11561 | ; | |
11562 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
11563 | { | |
7404fe1b | 11564 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
033bfb73 CC |
11565 | addend = psymval->value(object, addend); |
11566 | // In a relocatable link, the symbol value is relative to | |
11567 | // the start of the output section. For a non-relocatable | |
11568 | // link, we need to adjust the addend. | |
11569 | if (!relocatable) | |
11570 | { | |
11571 | gold_assert(os != NULL); | |
11572 | addend -= os->address(); | |
11573 | } | |
cf43a2fe AM |
11574 | } |
11575 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
11576 | { | |
e3a7574e AM |
11577 | if (size == 32) |
11578 | { | |
11579 | if (addend >= 32768) | |
11580 | addend += got2_addend; | |
11581 | } | |
11582 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
11583 | { | |
11584 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 11585 | addend -= d_offset; |
e3a7574e AM |
11586 | } |
11587 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
11588 | { | |
11589 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 11590 | addend -= d_offset + 4; |
e3a7574e | 11591 | } |
cf43a2fe AM |
11592 | } |
11593 | else | |
11594 | gold_unreachable(); | |
11595 | ||
033bfb73 | 11596 | if (!relocatable) |
7404fe1b AM |
11597 | { |
11598 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
11599 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
11600 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
11601 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
11602 | { | |
11603 | // First instruction of a global dynamic sequence, | |
11604 | // arg setup insn. | |
11605 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
11606 | switch (this->optimize_tls_gd(final)) | |
11607 | { | |
11608 | case tls::TLSOPT_TO_IE: | |
11609 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
11610 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
11611 | break; | |
11612 | case tls::TLSOPT_TO_LE: | |
11613 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
11614 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
11615 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
11616 | else | |
11617 | { | |
11618 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 11619 | offset -= d_offset; |
7404fe1b AM |
11620 | } |
11621 | break; | |
11622 | default: | |
11623 | break; | |
11624 | } | |
11625 | } | |
11626 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
11627 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
11628 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
11629 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
11630 | { | |
11631 | // First instruction of a local dynamic sequence, | |
11632 | // arg setup insn. | |
11633 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
11634 | { | |
11635 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
11636 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
11637 | { | |
11638 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
11639 | const Output_section* os = relinfo->layout->tls_segment() | |
11640 | ->first_section(); | |
11641 | gold_assert(os != NULL); | |
11642 | gold_assert(os->needs_symtab_index()); | |
11643 | r_sym = os->symtab_index(); | |
11644 | addend = dtp_offset; | |
11645 | } | |
11646 | else | |
11647 | { | |
11648 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 11649 | offset -= d_offset; |
7404fe1b AM |
11650 | } |
11651 | } | |
11652 | } | |
11653 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
11654 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
11655 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
11656 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
11657 | { | |
11658 | // First instruction of initial exec sequence. | |
11659 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
11660 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
11661 | { | |
11662 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
11663 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
11664 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
11665 | else | |
11666 | { | |
11667 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 11668 | offset -= d_offset; |
7404fe1b AM |
11669 | } |
11670 | } | |
11671 | } | |
11672 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
11673 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
11674 | { | |
11675 | // Second instruction of a global dynamic sequence, | |
11676 | // the __tls_get_addr call | |
11677 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
11678 | switch (this->optimize_tls_gd(final)) | |
11679 | { | |
11680 | case tls::TLSOPT_TO_IE: | |
11681 | r_type = elfcpp::R_POWERPC_NONE; | |
11682 | zap_next = true; | |
11683 | break; | |
11684 | case tls::TLSOPT_TO_LE: | |
11685 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 11686 | offset += d_offset; |
7404fe1b AM |
11687 | zap_next = true; |
11688 | break; | |
11689 | default: | |
11690 | break; | |
11691 | } | |
11692 | } | |
11693 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
11694 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
11695 | { | |
11696 | // Second instruction of a local dynamic sequence, | |
11697 | // the __tls_get_addr call | |
11698 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
11699 | { | |
11700 | const Output_section* os = relinfo->layout->tls_segment() | |
11701 | ->first_section(); | |
11702 | gold_assert(os != NULL); | |
11703 | gold_assert(os->needs_symtab_index()); | |
11704 | r_sym = os->symtab_index(); | |
11705 | addend = dtp_offset; | |
11706 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 11707 | offset += d_offset; |
7404fe1b AM |
11708 | zap_next = true; |
11709 | } | |
11710 | } | |
11711 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
11712 | { | |
11713 | // Second instruction of an initial exec sequence | |
11714 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
11715 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
11716 | { | |
11717 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 11718 | offset += d_offset; |
7404fe1b AM |
11719 | } |
11720 | } | |
11721 | } | |
11722 | ||
11723 | reloc_write.put_r_offset(offset); | |
11724 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
11725 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
11726 | |
11727 | pwrite += reloc_size; | |
11728 | } | |
11729 | ||
11730 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
11731 | == reloc_view_size); | |
42cacb20 DE |
11732 | } |
11733 | ||
ec661b9d | 11734 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
11735 | // treatment. This is how we support equality comparisons of function |
11736 | // pointers across shared library boundaries, as described in the | |
11737 | // processor specific ABI supplement. | |
11738 | ||
11739 | template<int size, bool big_endian> | |
11740 | uint64_t | |
11741 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
11742 | { | |
cf43a2fe AM |
11743 | if (size == 32) |
11744 | { | |
11745 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
11746 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
11747 | p != this->stub_tables_.end(); | |
11748 | ++p) | |
11749 | { | |
7e57d19e AM |
11750 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
11751 | = (*p)->find_plt_call_entry(gsym); | |
11752 | if (ent != NULL) | |
11753 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 11754 | } |
c9824451 | 11755 | } |
9055360d AM |
11756 | else if (this->abiversion() >= 2) |
11757 | { | |
faa2211d AM |
11758 | Address off = this->glink_section()->find_global_entry(gsym); |
11759 | if (off != invalid_address) | |
9055360d AM |
11760 | return this->glink_section()->global_entry_address() + off; |
11761 | } | |
ec661b9d | 11762 | gold_unreachable(); |
c9824451 AM |
11763 | } |
11764 | ||
11765 | // Return the PLT address to use for a local symbol. | |
11766 | template<int size, bool big_endian> | |
11767 | uint64_t | |
11768 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
11769 | const Relobj* object, | |
11770 | unsigned int symndx) const | |
11771 | { | |
11772 | if (size == 32) | |
11773 | { | |
11774 | const Sized_relobj<size, big_endian>* relobj | |
11775 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
11776 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
11777 | p != this->stub_tables_.end(); | |
11778 | ++p) | |
11779 | { | |
7e57d19e AM |
11780 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
11781 | = (*p)->find_plt_call_entry(relobj->sized_relobj(), symndx); | |
11782 | if (ent != NULL) | |
11783 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 11784 | } |
c9824451 | 11785 | } |
ec661b9d | 11786 | gold_unreachable(); |
c9824451 AM |
11787 | } |
11788 | ||
11789 | // Return the PLT address to use for a global symbol. | |
11790 | template<int size, bool big_endian> | |
11791 | uint64_t | |
11792 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
11793 | const Symbol* gsym) const | |
11794 | { | |
11795 | if (size == 32) | |
11796 | { | |
ec661b9d AM |
11797 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
11798 | p != this->stub_tables_.end(); | |
11799 | ++p) | |
11800 | { | |
7e57d19e AM |
11801 | const typename Stub_table<size, big_endian>::Plt_stub_ent* ent |
11802 | = (*p)->find_plt_call_entry(gsym); | |
11803 | if (ent != NULL) | |
11804 | return (*p)->stub_address() + ent->off_; | |
ec661b9d | 11805 | } |
cf43a2fe | 11806 | } |
9055360d AM |
11807 | else if (this->abiversion() >= 2) |
11808 | { | |
faa2211d AM |
11809 | Address off = this->glink_section()->find_global_entry(gsym); |
11810 | if (off != invalid_address) | |
9055360d AM |
11811 | return this->glink_section()->global_entry_address() + off; |
11812 | } | |
ec661b9d | 11813 | gold_unreachable(); |
42cacb20 DE |
11814 | } |
11815 | ||
bd73a62d AM |
11816 | // Return the offset to use for the GOT_INDX'th got entry which is |
11817 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
11818 | template<int size, bool big_endian> | |
11819 | int64_t | |
11820 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
11821 | const Relobj* object, | |
11822 | unsigned int symndx, | |
11823 | unsigned int got_indx) const | |
11824 | { | |
11825 | const Powerpc_relobj<size, big_endian>* ppc_object | |
11826 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
11827 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
11828 | { | |
11829 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
11830 | got_type <= GOT_TYPE_TPREL; | |
11831 | got_type = Got_type(got_type + 1)) | |
11832 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
11833 | { | |
11834 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
11835 | if (got_type == GOT_TYPE_TLSGD) | |
11836 | off += size / 8; | |
11837 | if (off == got_indx * (size / 8)) | |
11838 | { | |
11839 | if (got_type == GOT_TYPE_TPREL) | |
11840 | return -tp_offset; | |
11841 | else | |
11842 | return -dtp_offset; | |
11843 | } | |
11844 | } | |
11845 | } | |
11846 | gold_unreachable(); | |
11847 | } | |
11848 | ||
11849 | // Return the offset to use for the GOT_INDX'th got entry which is | |
11850 | // for global tls symbol GSYM. | |
11851 | template<int size, bool big_endian> | |
11852 | int64_t | |
11853 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
11854 | Symbol* gsym, | |
11855 | unsigned int got_indx) const | |
11856 | { | |
11857 | if (gsym->type() == elfcpp::STT_TLS) | |
11858 | { | |
11859 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
11860 | got_type <= GOT_TYPE_TPREL; | |
11861 | got_type = Got_type(got_type + 1)) | |
11862 | if (gsym->has_got_offset(got_type)) | |
11863 | { | |
11864 | unsigned int off = gsym->got_offset(got_type); | |
11865 | if (got_type == GOT_TYPE_TLSGD) | |
11866 | off += size / 8; | |
11867 | if (off == got_indx * (size / 8)) | |
11868 | { | |
11869 | if (got_type == GOT_TYPE_TPREL) | |
11870 | return -tp_offset; | |
11871 | else | |
11872 | return -dtp_offset; | |
11873 | } | |
11874 | } | |
11875 | } | |
11876 | gold_unreachable(); | |
11877 | } | |
11878 | ||
42cacb20 DE |
11879 | // The selector for powerpc object files. |
11880 | ||
11881 | template<int size, bool big_endian> | |
11882 | class Target_selector_powerpc : public Target_selector | |
11883 | { | |
11884 | public: | |
11885 | Target_selector_powerpc() | |
edc27beb AM |
11886 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
11887 | size, big_endian, | |
03ef7571 ILT |
11888 | (size == 64 |
11889 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
11890 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
11891 | (size == 64 | |
11892 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
11893 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
11894 | { } |
11895 | ||
2e702c99 RM |
11896 | virtual Target* |
11897 | do_instantiate_target() | |
7f055c20 | 11898 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
11899 | }; |
11900 | ||
11901 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
11902 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
11903 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
11904 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
11905 | ||
decdd3bc AM |
11906 | // Instantiate these constants for -O0 |
11907 | template<int size, bool big_endian> | |
9055360d AM |
11908 | const typename Output_data_glink<size, big_endian>::Address |
11909 | Output_data_glink<size, big_endian>::invalid_address; | |
11910 | template<int size, bool big_endian> | |
decdd3bc AM |
11911 | const typename Stub_table<size, big_endian>::Address |
11912 | Stub_table<size, big_endian>::invalid_address; | |
11913 | template<int size, bool big_endian> | |
11914 | const typename Target_powerpc<size, big_endian>::Address | |
11915 | Target_powerpc<size, big_endian>::invalid_address; | |
11916 | ||
42cacb20 | 11917 | } // End anonymous namespace. |