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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
2571583a | 3 | // Copyright (C) 2008-2017 Free Software Foundation, Inc. |
42cacb20 DE |
4 | // Written by David S. Miller <davem@davemloft.net> |
5 | // and David Edelsohn <edelsohn@gnu.org> | |
6 | ||
7 | // This file is part of gold. | |
8 | ||
9 | // This program is free software; you can redistribute it and/or modify | |
10 | // it under the terms of the GNU General Public License as published by | |
11 | // the Free Software Foundation; either version 3 of the License, or | |
12 | // (at your option) any later version. | |
13 | ||
14 | // This program is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License | |
20 | // along with this program; if not, write to the Free Software | |
21 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | // MA 02110-1301, USA. | |
23 | ||
24 | #include "gold.h" | |
25 | ||
dc3714f3 | 26 | #include <set> |
ec661b9d | 27 | #include <algorithm> |
42cacb20 | 28 | #include "elfcpp.h" |
9d5781f8 | 29 | #include "dwarf.h" |
42cacb20 DE |
30 | #include "parameters.h" |
31 | #include "reloc.h" | |
32 | #include "powerpc.h" | |
33 | #include "object.h" | |
34 | #include "symtab.h" | |
35 | #include "layout.h" | |
36 | #include "output.h" | |
37 | #include "copy-relocs.h" | |
38 | #include "target.h" | |
39 | #include "target-reloc.h" | |
40 | #include "target-select.h" | |
41 | #include "tls.h" | |
42 | #include "errors.h" | |
f345227a | 43 | #include "gc.h" |
42cacb20 DE |
44 | |
45 | namespace | |
46 | { | |
47 | ||
48 | using namespace gold; | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | class Output_data_plt_powerpc; | |
52 | ||
ec661b9d AM |
53 | template<int size, bool big_endian> |
54 | class Output_data_brlt_powerpc; | |
55 | ||
cf43a2fe AM |
56 | template<int size, bool big_endian> |
57 | class Output_data_got_powerpc; | |
58 | ||
59 | template<int size, bool big_endian> | |
60 | class Output_data_glink; | |
61 | ||
ec661b9d AM |
62 | template<int size, bool big_endian> |
63 | class Stub_table; | |
64 | ||
d49044c7 AM |
65 | template<int size, bool big_endian> |
66 | class Output_data_save_res; | |
67 | ||
a3e60ddb AM |
68 | template<int size, bool big_endian> |
69 | class Target_powerpc; | |
70 | ||
71 | struct Stub_table_owner | |
72 | { | |
dc60b26d AM |
73 | Stub_table_owner() |
74 | : output_section(NULL), owner(NULL) | |
75 | { } | |
76 | ||
a3e60ddb AM |
77 | Output_section* output_section; |
78 | const Output_section::Input_section* owner; | |
79 | }; | |
80 | ||
4d9aa155 AM |
81 | inline bool |
82 | is_branch_reloc(unsigned int r_type); | |
83 | ||
cf43a2fe AM |
84 | template<int size, bool big_endian> |
85 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
86 | { | |
87 | public: | |
dd93cd0a | 88 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
89 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
90 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 91 | |
cf43a2fe AM |
92 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
93 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
94 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
d8f5a274 | 95 | special_(0), has_small_toc_reloc_(false), opd_valid_(false), |
a3e60ddb | 96 | opd_ent_(), access_from_map_(), has14_(), stub_table_index_(), |
b4f7960d AM |
97 | e_flags_(ehdr.get_e_flags()), st_other_() |
98 | { | |
99 | this->set_abiversion(0); | |
100 | } | |
cf43a2fe AM |
101 | |
102 | ~Powerpc_relobj() | |
103 | { } | |
104 | ||
b4f7960d AM |
105 | // Read the symbols then set up st_other vector. |
106 | void | |
107 | do_read_symbols(Read_symbols_data*); | |
108 | ||
c9269dff | 109 | // The .got2 section shndx. |
cf43a2fe AM |
110 | unsigned int |
111 | got2_shndx() const | |
112 | { | |
113 | if (size == 32) | |
c9269dff | 114 | return this->special_; |
cf43a2fe AM |
115 | else |
116 | return 0; | |
117 | } | |
118 | ||
c9269dff AM |
119 | // The .opd section shndx. |
120 | unsigned int | |
121 | opd_shndx() const | |
122 | { | |
123 | if (size == 32) | |
124 | return 0; | |
125 | else | |
126 | return this->special_; | |
127 | } | |
128 | ||
129 | // Init OPD entry arrays. | |
130 | void | |
131 | init_opd(size_t opd_size) | |
132 | { | |
133 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 134 | this->opd_ent_.resize(count); |
c9269dff AM |
135 | } |
136 | ||
137 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
138 | unsigned int |
139 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
140 | { |
141 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
142 | gold_assert(ndx < this->opd_ent_.size()); |
143 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 144 | if (value != NULL) |
bfdfa4cd AM |
145 | *value = this->opd_ent_[ndx].off; |
146 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
147 | } |
148 | ||
149 | // Set section and offset of function entry for .opd + R_OFF. | |
150 | void | |
dd93cd0a | 151 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
152 | { |
153 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
154 | gold_assert(ndx < this->opd_ent_.size()); |
155 | this->opd_ent_[ndx].shndx = shndx; | |
156 | this->opd_ent_[ndx].off = value; | |
157 | } | |
158 | ||
159 | // Return discard flag for .opd + R_OFF. | |
160 | bool | |
161 | get_opd_discard(Address r_off) const | |
162 | { | |
163 | size_t ndx = this->opd_ent_ndx(r_off); | |
164 | gold_assert(ndx < this->opd_ent_.size()); | |
165 | return this->opd_ent_[ndx].discard; | |
166 | } | |
167 | ||
168 | // Set discard flag for .opd + R_OFF. | |
169 | void | |
170 | set_opd_discard(Address r_off) | |
171 | { | |
172 | size_t ndx = this->opd_ent_ndx(r_off); | |
173 | gold_assert(ndx < this->opd_ent_.size()); | |
174 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
175 | } |
176 | ||
e81fea4d AM |
177 | bool |
178 | opd_valid() const | |
179 | { return this->opd_valid_; } | |
180 | ||
181 | void | |
182 | set_opd_valid() | |
183 | { this->opd_valid_ = true; } | |
184 | ||
c9269dff AM |
185 | // Examine .rela.opd to build info about function entry points. |
186 | void | |
187 | scan_opd_relocs(size_t reloc_count, | |
188 | const unsigned char* prelocs, | |
189 | const unsigned char* plocal_syms); | |
190 | ||
26a4e9cb AM |
191 | // Perform the Sized_relobj_file method, then set up opd info from |
192 | // .opd relocs. | |
c9269dff AM |
193 | void |
194 | do_read_relocs(Read_relocs_data*); | |
195 | ||
cf43a2fe AM |
196 | bool |
197 | do_find_special_sections(Read_symbols_data* sd); | |
198 | ||
ec4dbad3 AM |
199 | // Adjust this local symbol value. Return false if the symbol |
200 | // should be discarded from the output file. | |
201 | bool | |
202 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
203 | { | |
204 | if (size == 64 && this->opd_shndx() != 0) | |
205 | { | |
206 | bool is_ordinary; | |
207 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
208 | return true; | |
209 | if (this->get_opd_discard(lv->input_value())) | |
210 | return false; | |
211 | } | |
212 | return true; | |
213 | } | |
214 | ||
6c77229c AM |
215 | Access_from* |
216 | access_from_map() | |
217 | { return &this->access_from_map_; } | |
218 | ||
219 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
220 | // section at DST_OFF. | |
221 | void | |
efc6fa12 | 222 | add_reference(Relobj* src_obj, |
6c77229c AM |
223 | unsigned int src_indx, |
224 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
225 | { | |
226 | Section_id src_id(src_obj, src_indx); | |
227 | this->access_from_map_[dst_off].insert(src_id); | |
228 | } | |
229 | ||
230 | // Add a reference to the code section specified by the .opd entry | |
231 | // at DST_OFF | |
232 | void | |
233 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
234 | { | |
235 | size_t ndx = this->opd_ent_ndx(dst_off); | |
236 | if (ndx >= this->opd_ent_.size()) | |
237 | this->opd_ent_.resize(ndx + 1); | |
238 | this->opd_ent_[ndx].gc_mark = true; | |
239 | } | |
240 | ||
241 | void | |
242 | process_gc_mark(Symbol_table* symtab) | |
243 | { | |
244 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
245 | if (this->opd_ent_[i].gc_mark) | |
246 | { | |
247 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 248 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
249 | } |
250 | } | |
251 | ||
dd93cd0a AM |
252 | // Return offset in output GOT section that this object will use |
253 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
254 | Address | |
255 | toc_base_offset() const | |
256 | { return 0x8000; } | |
257 | ||
d8f5a274 AM |
258 | void |
259 | set_has_small_toc_reloc() | |
260 | { has_small_toc_reloc_ = true; } | |
261 | ||
262 | bool | |
263 | has_small_toc_reloc() const | |
264 | { return has_small_toc_reloc_; } | |
265 | ||
ec661b9d AM |
266 | void |
267 | set_has_14bit_branch(unsigned int shndx) | |
268 | { | |
269 | if (shndx >= this->has14_.size()) | |
270 | this->has14_.resize(shndx + 1); | |
271 | this->has14_[shndx] = true; | |
272 | } | |
273 | ||
274 | bool | |
275 | has_14bit_branch(unsigned int shndx) const | |
276 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
277 | ||
278 | void | |
a3e60ddb | 279 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 280 | { |
a3e60ddb | 281 | if (shndx >= this->stub_table_index_.size()) |
dc60b26d | 282 | this->stub_table_index_.resize(shndx + 1, -1); |
a3e60ddb | 283 | this->stub_table_index_[shndx] = stub_index; |
ec661b9d AM |
284 | } |
285 | ||
286 | Stub_table<size, big_endian>* | |
287 | stub_table(unsigned int shndx) | |
288 | { | |
a3e60ddb AM |
289 | if (shndx < this->stub_table_index_.size()) |
290 | { | |
291 | Target_powerpc<size, big_endian>* target | |
292 | = static_cast<Target_powerpc<size, big_endian>*>( | |
293 | parameters->sized_target<size, big_endian>()); | |
294 | unsigned int indx = this->stub_table_index_[shndx]; | |
980d0cdd AM |
295 | if (indx < target->stub_tables().size()) |
296 | return target->stub_tables()[indx]; | |
a3e60ddb | 297 | } |
ec661b9d AM |
298 | return NULL; |
299 | } | |
300 | ||
a3e60ddb AM |
301 | void |
302 | clear_stub_table() | |
303 | { | |
304 | this->stub_table_index_.clear(); | |
305 | } | |
306 | ||
b4f7960d AM |
307 | int |
308 | abiversion() const | |
309 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
310 | ||
311 | // Set ABI version for input and output | |
312 | void | |
313 | set_abiversion(int ver); | |
314 | ||
315 | unsigned int | |
316 | ppc64_local_entry_offset(const Symbol* sym) const | |
317 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
318 | ||
319 | unsigned int | |
320 | ppc64_local_entry_offset(unsigned int symndx) const | |
321 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
322 | ||
cf43a2fe | 323 | private: |
bfdfa4cd AM |
324 | struct Opd_ent |
325 | { | |
326 | unsigned int shndx; | |
c6de8ed4 AM |
327 | bool discard : 1; |
328 | bool gc_mark : 1; | |
26a4e9cb | 329 | Address off; |
bfdfa4cd AM |
330 | }; |
331 | ||
332 | // Return index into opd_ent_ array for .opd entry at OFF. | |
333 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
334 | // apart when the language doesn't use the last 8-byte word, the | |
335 | // environment pointer. Thus dividing the entry section offset by | |
336 | // 16 will give an index into opd_ent_ that works for either layout | |
337 | // of .opd. (It leaves some elements of the vector unused when .opd | |
338 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
339 | // until relocations are processed, and in any case it is possible | |
340 | // for an object to have some entries spaced 16 bytes apart and | |
341 | // others 24 bytes apart.) | |
c9269dff AM |
342 | size_t |
343 | opd_ent_ndx(size_t off) const | |
344 | { return off >> 4;} | |
345 | ||
346 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. | |
347 | unsigned int special_; | |
bfdfa4cd | 348 | |
d8f5a274 AM |
349 | // For 64-bit, whether this object uses small model relocs to access |
350 | // the toc. | |
351 | bool has_small_toc_reloc_; | |
352 | ||
bfdfa4cd AM |
353 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
354 | // vector is valid. The flag could be made atomic and set in | |
355 | // do_read_relocs with memory_order_release and then tested with | |
356 | // memory_order_acquire, potentially resulting in fewer entries in | |
357 | // access_from_map_. | |
358 | bool opd_valid_; | |
359 | ||
c9269dff AM |
360 | // The first 8-byte word of an OPD entry gives the address of the |
361 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 362 | // relocation on this word. The following vector records the |
c9269dff | 363 | // section and offset specified by these relocations. |
bfdfa4cd AM |
364 | std::vector<Opd_ent> opd_ent_; |
365 | ||
e81fea4d | 366 | // References made to this object's .opd section when running |
bfdfa4cd AM |
367 | // gc_process_relocs for another object, before the opd_ent_ vector |
368 | // is valid for this object. | |
e81fea4d | 369 | Access_from access_from_map_; |
ec661b9d AM |
370 | |
371 | // Whether input section has a 14-bit branch reloc. | |
372 | std::vector<bool> has14_; | |
373 | ||
374 | // The stub table to use for a given input section. | |
a3e60ddb | 375 | std::vector<unsigned int> stub_table_index_; |
b4f7960d AM |
376 | |
377 | // Header e_flags | |
378 | elfcpp::Elf_Word e_flags_; | |
379 | ||
380 | // ELF st_other field for local symbols. | |
381 | std::vector<unsigned char> st_other_; | |
cf43a2fe AM |
382 | }; |
383 | ||
dc3714f3 AM |
384 | template<int size, bool big_endian> |
385 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
386 | { | |
387 | public: | |
388 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
389 | ||
390 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
391 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
392 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
b4f7960d AM |
393 | opd_shndx_(0), opd_ent_(), e_flags_(ehdr.get_e_flags()) |
394 | { | |
395 | this->set_abiversion(0); | |
396 | } | |
dc3714f3 AM |
397 | |
398 | ~Powerpc_dynobj() | |
399 | { } | |
400 | ||
401 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
402 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
403 | void | |
404 | do_read_symbols(Read_symbols_data*); | |
405 | ||
406 | // The .opd section shndx. | |
407 | unsigned int | |
408 | opd_shndx() const | |
409 | { | |
410 | return this->opd_shndx_; | |
411 | } | |
412 | ||
413 | // The .opd section address. | |
414 | Address | |
415 | opd_address() const | |
416 | { | |
417 | return this->opd_address_; | |
418 | } | |
419 | ||
420 | // Init OPD entry arrays. | |
421 | void | |
422 | init_opd(size_t opd_size) | |
423 | { | |
424 | size_t count = this->opd_ent_ndx(opd_size); | |
425 | this->opd_ent_.resize(count); | |
426 | } | |
427 | ||
428 | // Return section and offset of function entry for .opd + R_OFF. | |
429 | unsigned int | |
430 | get_opd_ent(Address r_off, Address* value = NULL) const | |
431 | { | |
432 | size_t ndx = this->opd_ent_ndx(r_off); | |
433 | gold_assert(ndx < this->opd_ent_.size()); | |
434 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
435 | if (value != NULL) | |
436 | *value = this->opd_ent_[ndx].off; | |
437 | return this->opd_ent_[ndx].shndx; | |
438 | } | |
439 | ||
440 | // Set section and offset of function entry for .opd + R_OFF. | |
441 | void | |
442 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
443 | { | |
444 | size_t ndx = this->opd_ent_ndx(r_off); | |
445 | gold_assert(ndx < this->opd_ent_.size()); | |
446 | this->opd_ent_[ndx].shndx = shndx; | |
447 | this->opd_ent_[ndx].off = value; | |
448 | } | |
449 | ||
b4f7960d AM |
450 | int |
451 | abiversion() const | |
452 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
453 | ||
454 | // Set ABI version for input and output. | |
455 | void | |
456 | set_abiversion(int ver); | |
457 | ||
dc3714f3 AM |
458 | private: |
459 | // Used to specify extent of executable sections. | |
460 | struct Sec_info | |
461 | { | |
462 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
463 | : start(start_), len(len_), shndx(shndx_) | |
464 | { } | |
465 | ||
466 | bool | |
467 | operator<(const Sec_info& that) const | |
468 | { return this->start < that.start; } | |
469 | ||
470 | Address start; | |
471 | Address len; | |
472 | unsigned int shndx; | |
473 | }; | |
474 | ||
475 | struct Opd_ent | |
476 | { | |
477 | unsigned int shndx; | |
478 | Address off; | |
479 | }; | |
480 | ||
481 | // Return index into opd_ent_ array for .opd entry at OFF. | |
482 | size_t | |
483 | opd_ent_ndx(size_t off) const | |
484 | { return off >> 4;} | |
485 | ||
486 | // For 64-bit the .opd section shndx and address. | |
487 | unsigned int opd_shndx_; | |
488 | Address opd_address_; | |
489 | ||
490 | // The first 8-byte word of an OPD entry gives the address of the | |
491 | // entry point of the function. Records the section and offset | |
492 | // corresponding to the address. Note that in dynamic objects, | |
493 | // offset is *not* relative to the section. | |
494 | std::vector<Opd_ent> opd_ent_; | |
b4f7960d AM |
495 | |
496 | // Header e_flags | |
497 | elfcpp::Elf_Word e_flags_; | |
dc3714f3 AM |
498 | }; |
499 | ||
42cacb20 DE |
500 | template<int size, bool big_endian> |
501 | class Target_powerpc : public Sized_target<size, big_endian> | |
502 | { | |
503 | public: | |
d83ce4e3 AM |
504 | typedef |
505 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 506 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 507 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
c9269dff | 508 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
509 | // Offset of tp and dtp pointers from start of TLS block. |
510 | static const Address tp_offset = 0x7000; | |
511 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
512 | |
513 | Target_powerpc() | |
514 | : Sized_target<size, big_endian>(&powerpc_info), | |
ec661b9d AM |
515 | got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL), |
516 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(elfcpp::R_POWERPC_COPY), | |
43819297 | 517 | tlsld_got_offset_(-1U), |
9e69ed50 | 518 | stub_tables_(), branch_lookup_table_(), branch_info_(), |
a3e60ddb | 519 | plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0), |
d49044c7 | 520 | stub_group_size_(0), savres_section_(0) |
42cacb20 DE |
521 | { |
522 | } | |
523 | ||
2e702c99 | 524 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
525 | // garbage collection. |
526 | void | |
ad0f2072 | 527 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
528 | Layout* layout, |
529 | Sized_relobj_file<size, big_endian>* object, | |
530 | unsigned int data_shndx, | |
531 | unsigned int sh_type, | |
532 | const unsigned char* prelocs, | |
533 | size_t reloc_count, | |
534 | Output_section* output_section, | |
535 | bool needs_special_offset_handling, | |
536 | size_t local_symbol_count, | |
537 | const unsigned char* plocal_symbols); | |
6d03d481 | 538 | |
42cacb20 DE |
539 | // Scan the relocations to look for symbol adjustments. |
540 | void | |
ad0f2072 | 541 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 542 | Layout* layout, |
6fa2a40b | 543 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
544 | unsigned int data_shndx, |
545 | unsigned int sh_type, | |
546 | const unsigned char* prelocs, | |
547 | size_t reloc_count, | |
548 | Output_section* output_section, | |
549 | bool needs_special_offset_handling, | |
550 | size_t local_symbol_count, | |
551 | const unsigned char* plocal_symbols); | |
921b5322 AM |
552 | |
553 | // Map input .toc section to output .got section. | |
554 | const char* | |
555 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
556 | { | |
557 | if (size == 64 && strcmp(name, ".toc") == 0) | |
558 | { | |
559 | *plen = 4; | |
560 | return ".got"; | |
561 | } | |
562 | return NULL; | |
563 | } | |
564 | ||
f3a0ed29 AM |
565 | // Provide linker defined save/restore functions. |
566 | void | |
567 | define_save_restore_funcs(Layout*, Symbol_table*); | |
568 | ||
ec661b9d AM |
569 | // No stubs unless a final link. |
570 | bool | |
571 | do_may_relax() const | |
572 | { return !parameters->options().relocatable(); } | |
573 | ||
574 | bool | |
575 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
576 | ||
9d5781f8 AM |
577 | void |
578 | do_plt_fde_location(const Output_data*, unsigned char*, | |
579 | uint64_t*, off_t*) const; | |
580 | ||
ec661b9d AM |
581 | // Stash info about branches, for stub generation. |
582 | void | |
583 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
584 | unsigned int data_shndx, Address r_offset, | |
585 | unsigned int r_type, unsigned int r_sym, Address addend) | |
586 | { | |
587 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
588 | this->branch_info_.push_back(info); | |
589 | if (r_type == elfcpp::R_POWERPC_REL14 | |
590 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
591 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
592 | ppc_object->set_has_14bit_branch(data_shndx); | |
593 | } | |
594 | ||
f43ba157 AM |
595 | void |
596 | do_define_standard_symbols(Symbol_table*, Layout*); | |
597 | ||
42cacb20 DE |
598 | // Finalize the sections. |
599 | void | |
f59f41f3 | 600 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
601 | |
602 | // Return the value to use for a dynamic which requires special | |
603 | // treatment. | |
604 | uint64_t | |
605 | do_dynsym_value(const Symbol*) const; | |
606 | ||
c9824451 AM |
607 | // Return the PLT address to use for a local symbol. |
608 | uint64_t | |
609 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
610 | ||
611 | // Return the PLT address to use for a global symbol. | |
612 | uint64_t | |
613 | do_plt_address_for_global(const Symbol*) const; | |
614 | ||
bd73a62d AM |
615 | // Return the offset to use for the GOT_INDX'th got entry which is |
616 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
617 | int64_t | |
618 | do_tls_offset_for_local(const Relobj* object, | |
619 | unsigned int symndx, | |
620 | unsigned int got_indx) const; | |
621 | ||
622 | // Return the offset to use for the GOT_INDX'th got entry which is | |
623 | // for global tls symbol GSYM. | |
624 | int64_t | |
625 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
626 | ||
dc3714f3 AM |
627 | void |
628 | do_function_location(Symbol_location*) const; | |
629 | ||
4d9aa155 AM |
630 | bool |
631 | do_can_check_for_function_pointers() const | |
632 | { return true; } | |
633 | ||
bbec1a5d AM |
634 | // Adjust -fsplit-stack code which calls non-split-stack code. |
635 | void | |
636 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
637 | section_offset_type fnoffset, section_size_type fnsize, | |
6e0813d3 | 638 | const unsigned char* prelocs, size_t reloc_count, |
bbec1a5d AM |
639 | unsigned char* view, section_size_type view_size, |
640 | std::string* from, std::string* to) const; | |
641 | ||
42cacb20 DE |
642 | // Relocate a section. |
643 | void | |
644 | relocate_section(const Relocate_info<size, big_endian>*, | |
645 | unsigned int sh_type, | |
646 | const unsigned char* prelocs, | |
647 | size_t reloc_count, | |
648 | Output_section* output_section, | |
649 | bool needs_special_offset_handling, | |
650 | unsigned char* view, | |
c9269dff | 651 | Address view_address, |
364c7fa5 ILT |
652 | section_size_type view_size, |
653 | const Reloc_symbol_changes*); | |
42cacb20 DE |
654 | |
655 | // Scan the relocs during a relocatable link. | |
656 | void | |
ad0f2072 | 657 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 658 | Layout* layout, |
6fa2a40b | 659 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
660 | unsigned int data_shndx, |
661 | unsigned int sh_type, | |
662 | const unsigned char* prelocs, | |
663 | size_t reloc_count, | |
664 | Output_section* output_section, | |
665 | bool needs_special_offset_handling, | |
666 | size_t local_symbol_count, | |
667 | const unsigned char* plocal_symbols, | |
668 | Relocatable_relocs*); | |
669 | ||
4d625b70 CC |
670 | // Scan the relocs for --emit-relocs. |
671 | void | |
672 | emit_relocs_scan(Symbol_table* symtab, | |
673 | Layout* layout, | |
674 | Sized_relobj_file<size, big_endian>* object, | |
675 | unsigned int data_shndx, | |
676 | unsigned int sh_type, | |
677 | const unsigned char* prelocs, | |
678 | size_t reloc_count, | |
679 | Output_section* output_section, | |
680 | bool needs_special_offset_handling, | |
681 | size_t local_symbol_count, | |
682 | const unsigned char* plocal_syms, | |
683 | Relocatable_relocs* rr); | |
684 | ||
7404fe1b | 685 | // Emit relocations for a section. |
42cacb20 | 686 | void |
7404fe1b AM |
687 | relocate_relocs(const Relocate_info<size, big_endian>*, |
688 | unsigned int sh_type, | |
689 | const unsigned char* prelocs, | |
690 | size_t reloc_count, | |
691 | Output_section* output_section, | |
62fe925a RM |
692 | typename elfcpp::Elf_types<size>::Elf_Off |
693 | offset_in_output_section, | |
7404fe1b AM |
694 | unsigned char*, |
695 | Address view_address, | |
696 | section_size_type, | |
697 | unsigned char* reloc_view, | |
698 | section_size_type reloc_view_size); | |
42cacb20 DE |
699 | |
700 | // Return whether SYM is defined by the ABI. | |
701 | bool | |
9c2d0ef9 | 702 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 703 | { |
cf43a2fe | 704 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
705 | } |
706 | ||
707 | // Return the size of the GOT section. | |
708 | section_size_type | |
0e70b911 | 709 | got_size() const |
42cacb20 DE |
710 | { |
711 | gold_assert(this->got_ != NULL); | |
712 | return this->got_->data_size(); | |
713 | } | |
714 | ||
cf43a2fe AM |
715 | // Get the PLT section. |
716 | const Output_data_plt_powerpc<size, big_endian>* | |
717 | plt_section() const | |
718 | { | |
719 | gold_assert(this->plt_ != NULL); | |
720 | return this->plt_; | |
721 | } | |
722 | ||
e5d5f5ed AM |
723 | // Get the IPLT section. |
724 | const Output_data_plt_powerpc<size, big_endian>* | |
725 | iplt_section() const | |
726 | { | |
727 | gold_assert(this->iplt_ != NULL); | |
728 | return this->iplt_; | |
729 | } | |
730 | ||
cf43a2fe AM |
731 | // Get the .glink section. |
732 | const Output_data_glink<size, big_endian>* | |
733 | glink_section() const | |
734 | { | |
735 | gold_assert(this->glink_ != NULL); | |
736 | return this->glink_; | |
737 | } | |
738 | ||
9055360d AM |
739 | Output_data_glink<size, big_endian>* |
740 | glink_section() | |
741 | { | |
742 | gold_assert(this->glink_ != NULL); | |
743 | return this->glink_; | |
744 | } | |
745 | ||
9d5781f8 AM |
746 | bool has_glink() const |
747 | { return this->glink_ != NULL; } | |
748 | ||
cf43a2fe AM |
749 | // Get the GOT section. |
750 | const Output_data_got_powerpc<size, big_endian>* | |
751 | got_section() const | |
752 | { | |
753 | gold_assert(this->got_ != NULL); | |
754 | return this->got_; | |
755 | } | |
756 | ||
26a4e9cb AM |
757 | // Get the GOT section, creating it if necessary. |
758 | Output_data_got_powerpc<size, big_endian>* | |
759 | got_section(Symbol_table*, Layout*); | |
760 | ||
cf43a2fe AM |
761 | Object* |
762 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
763 | const elfcpp::Ehdr<size, big_endian>&); | |
764 | ||
0e70b911 CC |
765 | // Return the number of entries in the GOT. |
766 | unsigned int | |
767 | got_entry_count() const | |
768 | { | |
769 | if (this->got_ == NULL) | |
770 | return 0; | |
771 | return this->got_size() / (size / 8); | |
772 | } | |
773 | ||
774 | // Return the number of entries in the PLT. | |
775 | unsigned int | |
776 | plt_entry_count() const; | |
777 | ||
778 | // Return the offset of the first non-reserved PLT entry. | |
779 | unsigned int | |
b4f7960d AM |
780 | first_plt_entry_offset() const |
781 | { | |
782 | if (size == 32) | |
783 | return 0; | |
784 | if (this->abiversion() >= 2) | |
785 | return 16; | |
786 | return 24; | |
787 | } | |
0e70b911 CC |
788 | |
789 | // Return the size of each PLT entry. | |
790 | unsigned int | |
b4f7960d AM |
791 | plt_entry_size() const |
792 | { | |
793 | if (size == 32) | |
794 | return 4; | |
795 | if (this->abiversion() >= 2) | |
796 | return 8; | |
797 | return 24; | |
798 | } | |
0e70b911 | 799 | |
d49044c7 AM |
800 | Output_data_save_res<size, big_endian>* |
801 | savres_section() const | |
802 | { | |
803 | return this->savres_section_; | |
804 | } | |
805 | ||
e81fea4d AM |
806 | // Add any special sections for this symbol to the gc work list. |
807 | // For powerpc64, this adds the code section of a function | |
808 | // descriptor. | |
809 | void | |
810 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
811 | ||
812 | // Handle target specific gc actions when adding a gc reference from | |
813 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
814 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
815 | // section of a function descriptor. | |
816 | void | |
817 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 818 | Relobj* src_obj, |
e81fea4d | 819 | unsigned int src_shndx, |
efc6fa12 | 820 | Relobj* dst_obj, |
e81fea4d AM |
821 | unsigned int dst_shndx, |
822 | Address dst_off) const; | |
823 | ||
ec661b9d AM |
824 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
825 | const Stub_tables& | |
826 | stub_tables() const | |
827 | { return this->stub_tables_; } | |
828 | ||
829 | const Output_data_brlt_powerpc<size, big_endian>* | |
830 | brlt_section() const | |
831 | { return this->brlt_section_; } | |
832 | ||
833 | void | |
834 | add_branch_lookup_table(Address to) | |
835 | { | |
836 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
837 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
838 | } | |
839 | ||
840 | Address | |
841 | find_branch_lookup_table(Address to) | |
842 | { | |
843 | typename Branch_lookup_table::const_iterator p | |
844 | = this->branch_lookup_table_.find(to); | |
845 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
846 | } | |
847 | ||
848 | void | |
849 | write_branch_lookup_table(unsigned char *oview) | |
850 | { | |
851 | for (typename Branch_lookup_table::const_iterator p | |
852 | = this->branch_lookup_table_.begin(); | |
853 | p != this->branch_lookup_table_.end(); | |
854 | ++p) | |
855 | { | |
4d5effb9 | 856 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
857 | } |
858 | } | |
859 | ||
9e69ed50 AM |
860 | bool |
861 | plt_thread_safe() const | |
862 | { return this->plt_thread_safe_; } | |
863 | ||
b4f7960d AM |
864 | int |
865 | abiversion () const | |
866 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } | |
867 | ||
868 | void | |
869 | set_abiversion (int ver) | |
870 | { | |
871 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
872 | flags &= ~elfcpp::EF_PPC64_ABI; | |
873 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
874 | this->set_processor_specific_flags(flags); | |
875 | } | |
876 | ||
877 | // Offset to to save stack slot | |
878 | int | |
879 | stk_toc () const | |
880 | { return this->abiversion() < 2 ? 40 : 24; } | |
881 | ||
42cacb20 DE |
882 | private: |
883 | ||
e3deeb9c AM |
884 | class Track_tls |
885 | { | |
886 | public: | |
887 | enum Tls_get_addr | |
888 | { | |
889 | NOT_EXPECTED = 0, | |
890 | EXPECTED = 1, | |
891 | SKIP = 2, | |
892 | NORMAL = 3 | |
893 | }; | |
894 | ||
895 | Track_tls() | |
896 | : tls_get_addr_(NOT_EXPECTED), | |
897 | relinfo_(NULL), relnum_(0), r_offset_(0) | |
898 | { } | |
899 | ||
900 | ~Track_tls() | |
901 | { | |
902 | if (this->tls_get_addr_ != NOT_EXPECTED) | |
903 | this->missing(); | |
904 | } | |
905 | ||
906 | void | |
907 | missing(void) | |
908 | { | |
909 | if (this->relinfo_ != NULL) | |
910 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
911 | _("missing expected __tls_get_addr call")); | |
912 | } | |
913 | ||
914 | void | |
915 | expect_tls_get_addr_call( | |
916 | const Relocate_info<size, big_endian>* relinfo, | |
917 | size_t relnum, | |
918 | Address r_offset) | |
919 | { | |
920 | this->tls_get_addr_ = EXPECTED; | |
921 | this->relinfo_ = relinfo; | |
922 | this->relnum_ = relnum; | |
923 | this->r_offset_ = r_offset; | |
924 | } | |
925 | ||
926 | void | |
927 | expect_tls_get_addr_call() | |
928 | { this->tls_get_addr_ = EXPECTED; } | |
929 | ||
930 | void | |
931 | skip_next_tls_get_addr_call() | |
932 | {this->tls_get_addr_ = SKIP; } | |
933 | ||
934 | Tls_get_addr | |
935 | maybe_skip_tls_get_addr_call(unsigned int r_type, const Symbol* gsym) | |
936 | { | |
937 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
938 | || r_type == elfcpp::R_PPC_PLTREL24) | |
939 | && gsym != NULL | |
940 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
941 | Tls_get_addr last_tls = this->tls_get_addr_; | |
942 | this->tls_get_addr_ = NOT_EXPECTED; | |
943 | if (is_tls_call && last_tls != EXPECTED) | |
944 | return last_tls; | |
945 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
946 | { | |
947 | this->missing(); | |
948 | return EXPECTED; | |
949 | } | |
950 | return NORMAL; | |
951 | } | |
952 | ||
953 | private: | |
954 | // What we're up to regarding calls to __tls_get_addr. | |
955 | // On powerpc, the branch and link insn making a call to | |
956 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
957 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
958 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
959 | // The marker relocation always comes first, and has the same | |
960 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
961 | // argument. This ties the arg setup insn with the call insn, | |
962 | // allowing ld to safely optimize away the call. We check that | |
963 | // every call to __tls_get_addr has a marker relocation, and that | |
964 | // every marker relocation is on a call to __tls_get_addr. | |
965 | Tls_get_addr tls_get_addr_; | |
966 | // Info about the last reloc for error message. | |
967 | const Relocate_info<size, big_endian>* relinfo_; | |
968 | size_t relnum_; | |
969 | Address r_offset_; | |
970 | }; | |
971 | ||
42cacb20 | 972 | // The class which scans relocations. |
e3deeb9c | 973 | class Scan : protected Track_tls |
42cacb20 DE |
974 | { |
975 | public: | |
bfdfa4cd AM |
976 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
977 | ||
42cacb20 | 978 | Scan() |
e3deeb9c | 979 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
980 | { } |
981 | ||
95a2c8d6 | 982 | static inline int |
88b8e639 | 983 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 984 | |
42cacb20 | 985 | inline void |
ad0f2072 | 986 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 987 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
988 | unsigned int data_shndx, |
989 | Output_section* output_section, | |
990 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
991 | const elfcpp::Sym<size, big_endian>& lsym, |
992 | bool is_discarded); | |
42cacb20 DE |
993 | |
994 | inline void | |
ad0f2072 | 995 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 996 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
997 | unsigned int data_shndx, |
998 | Output_section* output_section, | |
999 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
1000 | Symbol* gsym); | |
1001 | ||
21bb3914 ST |
1002 | inline bool |
1003 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1004 | Target_powerpc* , | |
f6971787 | 1005 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 1006 | unsigned int , |
2e702c99 RM |
1007 | Output_section* , |
1008 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 1009 | unsigned int r_type, |
2e702c99 | 1010 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
1011 | { |
1012 | // PowerPC64 .opd is not folded, so any identical function text | |
1013 | // may be folded and we'll still keep function addresses distinct. | |
1014 | // That means no reloc is of concern here. | |
1015 | if (size == 64) | |
f6971787 AM |
1016 | { |
1017 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1018 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1019 | if (ppcobj->abiversion() == 1) | |
1020 | return false; | |
1021 | } | |
1022 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
1023 | // function code might be taking the address of the function. |
1024 | return !is_branch_reloc(r_type); | |
1025 | } | |
21bb3914 ST |
1026 | |
1027 | inline bool | |
1028 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1029 | Target_powerpc* , | |
f6971787 | 1030 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1031 | unsigned int , |
1032 | Output_section* , | |
4d9aa155 AM |
1033 | const elfcpp::Rela<size, big_endian>& , |
1034 | unsigned int r_type, | |
1035 | Symbol*) | |
1036 | { | |
1037 | // As above. | |
1038 | if (size == 64) | |
f6971787 AM |
1039 | { |
1040 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1041 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1042 | if (ppcobj->abiversion() == 1) | |
1043 | return false; | |
1044 | } | |
4d9aa155 AM |
1045 | return !is_branch_reloc(r_type); |
1046 | } | |
21bb3914 | 1047 | |
b3ccdeb5 | 1048 | static bool |
9055360d AM |
1049 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1050 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1051 | unsigned int r_type, bool report_err); |
1052 | ||
42cacb20 DE |
1053 | private: |
1054 | static void | |
6fa2a40b | 1055 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1056 | unsigned int r_type); |
1057 | ||
1058 | static void | |
6fa2a40b | 1059 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1060 | unsigned int r_type, Symbol*); |
1061 | ||
1062 | static void | |
1063 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1064 | Target_powerpc* target); | |
1065 | ||
1066 | void | |
1067 | check_non_pic(Relobj*, unsigned int r_type); | |
1068 | ||
1069 | // Whether we have issued an error about a non-PIC compilation. | |
1070 | bool issued_non_pic_error_; | |
1071 | }; | |
1072 | ||
1611bc4a AM |
1073 | bool |
1074 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1075 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1076 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1077 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1078 | |
42cacb20 | 1079 | // The class which implements relocation. |
e3deeb9c | 1080 | class Relocate : protected Track_tls |
42cacb20 DE |
1081 | { |
1082 | public: | |
dd93cd0a AM |
1083 | // Use 'at' branch hints when true, 'y' when false. |
1084 | // FIXME maybe: set this with an option. | |
1085 | static const bool is_isa_v2 = true; | |
1086 | ||
dd93cd0a | 1087 | Relocate() |
e3deeb9c | 1088 | : Track_tls() |
dd93cd0a AM |
1089 | { } |
1090 | ||
42cacb20 DE |
1091 | // Do a relocation. Return false if the caller should not issue |
1092 | // any warnings about this relocation. | |
1093 | inline bool | |
91a65d2f AM |
1094 | relocate(const Relocate_info<size, big_endian>*, unsigned int, |
1095 | Target_powerpc*, Output_section*, size_t, const unsigned char*, | |
1096 | const Sized_symbol<size>*, const Symbol_value<size>*, | |
1097 | unsigned char*, typename elfcpp::Elf_types<size>::Elf_Addr, | |
42cacb20 | 1098 | section_size_type); |
42cacb20 DE |
1099 | }; |
1100 | ||
168a4726 AM |
1101 | class Relocate_comdat_behavior |
1102 | { | |
1103 | public: | |
1104 | // Decide what the linker should do for relocations that refer to | |
1105 | // discarded comdat sections. | |
1106 | inline Comdat_behavior | |
1107 | get(const char* name) | |
1108 | { | |
1109 | gold::Default_comdat_behavior default_behavior; | |
1110 | Comdat_behavior ret = default_behavior.get(name); | |
1111 | if (ret == CB_WARNING) | |
1112 | { | |
1113 | if (size == 32 | |
1114 | && (strcmp(name, ".fixup") == 0 | |
1115 | || strcmp(name, ".got2") == 0)) | |
1116 | ret = CB_IGNORE; | |
1117 | if (size == 64 | |
1118 | && (strcmp(name, ".opd") == 0 | |
1119 | || strcmp(name, ".toc") == 0 | |
1120 | || strcmp(name, ".toc1") == 0)) | |
1121 | ret = CB_IGNORE; | |
1122 | } | |
1123 | return ret; | |
1124 | } | |
1125 | }; | |
1126 | ||
dd93cd0a AM |
1127 | // Optimize the TLS relocation type based on what we know about the |
1128 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1129 | // known at link time. | |
1130 | ||
1131 | tls::Tls_optimization | |
1132 | optimize_tls_gd(bool is_final) | |
1133 | { | |
1134 | // If we are generating a shared library, then we can't do anything | |
1135 | // in the linker. | |
1136 | if (parameters->options().shared()) | |
1137 | return tls::TLSOPT_NONE; | |
1138 | ||
1139 | if (!is_final) | |
1140 | return tls::TLSOPT_TO_IE; | |
1141 | return tls::TLSOPT_TO_LE; | |
1142 | } | |
1143 | ||
1144 | tls::Tls_optimization | |
1145 | optimize_tls_ld() | |
1146 | { | |
1147 | if (parameters->options().shared()) | |
1148 | return tls::TLSOPT_NONE; | |
1149 | ||
1150 | return tls::TLSOPT_TO_LE; | |
1151 | } | |
1152 | ||
1153 | tls::Tls_optimization | |
1154 | optimize_tls_ie(bool is_final) | |
1155 | { | |
1156 | if (!is_final || parameters->options().shared()) | |
1157 | return tls::TLSOPT_NONE; | |
1158 | ||
1159 | return tls::TLSOPT_TO_LE; | |
1160 | } | |
cf43a2fe | 1161 | |
cf43a2fe AM |
1162 | // Create glink. |
1163 | void | |
1164 | make_glink_section(Layout*); | |
42cacb20 | 1165 | |
cf43a2fe AM |
1166 | // Create the PLT section. |
1167 | void | |
40b469d7 | 1168 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1169 | |
e5d5f5ed | 1170 | void |
40b469d7 | 1171 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1172 | |
ec661b9d AM |
1173 | void |
1174 | make_brlt_section(Layout*); | |
1175 | ||
42cacb20 DE |
1176 | // Create a PLT entry for a global symbol. |
1177 | void | |
ec661b9d | 1178 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1179 | |
1180 | // Create a PLT entry for a local IFUNC symbol. | |
1181 | void | |
40b469d7 | 1182 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1183 | Sized_relobj_file<size, big_endian>*, |
1184 | unsigned int); | |
1185 | ||
42cacb20 | 1186 | |
dd93cd0a AM |
1187 | // Create a GOT entry for local dynamic __tls_get_addr. |
1188 | unsigned int | |
1189 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1190 | Sized_relobj_file<size, big_endian>* object); | |
1191 | ||
42cacb20 | 1192 | unsigned int |
dd93cd0a AM |
1193 | tlsld_got_offset() const |
1194 | { | |
1195 | return this->tlsld_got_offset_; | |
1196 | } | |
42cacb20 | 1197 | |
42cacb20 DE |
1198 | // Get the dynamic reloc section, creating it if necessary. |
1199 | Reloc_section* | |
1200 | rela_dyn_section(Layout*); | |
1201 | ||
b3ccdeb5 AM |
1202 | // Similarly, but for ifunc symbols get the one for ifunc. |
1203 | Reloc_section* | |
1204 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1205 | ||
42cacb20 DE |
1206 | // Copy a relocation against a global symbol. |
1207 | void | |
ef9beddf | 1208 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1209 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1210 | unsigned int shndx, Output_section* output_section, |
1211 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1212 | { | |
859d7987 | 1213 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc.get_r_info()); |
42cacb20 DE |
1214 | this->copy_relocs_.copy_reloc(symtab, layout, |
1215 | symtab->get_sized_symbol<size>(sym), | |
1216 | object, shndx, output_section, | |
859d7987 CC |
1217 | r_type, reloc.get_r_offset(), |
1218 | reloc.get_r_addend(), | |
1219 | this->rela_dyn_section(layout)); | |
42cacb20 DE |
1220 | } |
1221 | ||
0cfdc767 | 1222 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1223 | void |
a3e60ddb | 1224 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1225 | |
1226 | // Sort output sections by address. | |
1227 | struct Sort_sections | |
1228 | { | |
1229 | bool | |
1230 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1231 | { return sec1->address() < sec2->address(); } | |
1232 | }; | |
1233 | ||
1234 | class Branch_info | |
1235 | { | |
1236 | public: | |
1237 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1238 | unsigned int data_shndx, | |
1239 | Address r_offset, | |
1240 | unsigned int r_type, | |
1241 | unsigned int r_sym, | |
1242 | Address addend) | |
1243 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
1244 | r_type_(r_type), r_sym_(r_sym), addend_(addend) | |
1245 | { } | |
1246 | ||
1247 | ~Branch_info() | |
1248 | { } | |
1249 | ||
1250 | // If this branch needs a plt call stub, or a long branch stub, make one. | |
a3e60ddb | 1251 | bool |
ec661b9d AM |
1252 | make_stub(Stub_table<size, big_endian>*, |
1253 | Stub_table<size, big_endian>*, | |
1254 | Symbol_table*) const; | |
1255 | ||
1256 | private: | |
1257 | // The branch location.. | |
1258 | Powerpc_relobj<size, big_endian>* object_; | |
1259 | unsigned int shndx_; | |
1260 | Address offset_; | |
1261 | // ..and the branch type and destination. | |
1262 | unsigned int r_type_; | |
1263 | unsigned int r_sym_; | |
1264 | Address addend_; | |
1265 | }; | |
1266 | ||
42cacb20 DE |
1267 | // Information about this specific target which we pass to the |
1268 | // general Target structure. | |
1269 | static Target::Target_info powerpc_info; | |
1270 | ||
1271 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1272 | // These values are exposed to the ABI in an incremental link. |
1273 | // Do not renumber existing values without changing the version | |
1274 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1275 | enum Got_type |
1276 | { | |
dd93cd0a AM |
1277 | GOT_TYPE_STANDARD, |
1278 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1279 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1280 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1281 | }; |
1282 | ||
ec661b9d | 1283 | // The GOT section. |
cf43a2fe | 1284 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1285 | // The PLT section. This is a container for a table of addresses, |
1286 | // and their relocations. Each address in the PLT has a dynamic | |
1287 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1288 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1289 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1290 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1291 | // linker adds a stub that loads the PLT entry into ctr then | |
1292 | // branches to ctr. There may be more than one stub for each PLT | |
1293 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1294 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1295 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1296 | // The IPLT section. Like plt_, this is a container for a table of |
1297 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1298 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1299 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1300 | // entry in .glink for lazy resolution, and the relocation section | |
1301 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1302 | // the relocation section may contain relocations against | |
1303 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1304 | // relocation section will appear at the end of other dynamic | |
1305 | // relocations, so that ld.so applies these relocations after other | |
1306 | // dynamic relocations. In a static executable, the relocation | |
1307 | // section is emitted and marked with __rela_iplt_start and | |
1308 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1309 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
ec661b9d AM |
1310 | // Section holding long branch destinations. |
1311 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1312 | // The .glink section. | |
cf43a2fe | 1313 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1314 | // The dynamic reloc section. |
42cacb20 DE |
1315 | Reloc_section* rela_dyn_; |
1316 | // Relocs saved to avoid a COPY reloc. | |
1317 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
dd93cd0a AM |
1318 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1319 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1320 | |
1321 | Stub_tables stub_tables_; | |
1322 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1323 | Branch_lookup_table branch_lookup_table_; | |
1324 | ||
1325 | typedef std::vector<Branch_info> Branches; | |
1326 | Branches branch_info_; | |
9e69ed50 AM |
1327 | |
1328 | bool plt_thread_safe_; | |
a3e60ddb AM |
1329 | |
1330 | bool relax_failed_; | |
1331 | int relax_fail_count_; | |
1332 | int32_t stub_group_size_; | |
d49044c7 AM |
1333 | |
1334 | Output_data_save_res<size, big_endian> *savres_section_; | |
42cacb20 DE |
1335 | }; |
1336 | ||
1337 | template<> | |
1338 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1339 | { | |
1340 | 32, // size | |
1341 | true, // is_big_endian | |
1342 | elfcpp::EM_PPC, // machine_code | |
1343 | false, // has_make_symbol | |
1344 | false, // has_resolve | |
1345 | false, // has_code_fill | |
1346 | true, // is_default_stack_executable | |
b3ce541e | 1347 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1348 | '\0', // wrap_char |
1349 | "/usr/lib/ld.so.1", // dynamic_linker | |
1350 | 0x10000000, // default_text_segment_address | |
1351 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1352 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1353 | false, // isolate_execinstr |
1354 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1355 | elfcpp::SHN_UNDEF, // small_common_shndx |
1356 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1357 | 0, // small_common_section_flags | |
05a352e6 DK |
1358 | 0, // large_common_section_flags |
1359 | NULL, // attributes_section | |
a67858e0 | 1360 | NULL, // attributes_vendor |
8d9743bd MK |
1361 | "_start", // entry_symbol_name |
1362 | 32, // hash_entry_size | |
42cacb20 DE |
1363 | }; |
1364 | ||
1365 | template<> | |
1366 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1367 | { | |
1368 | 32, // size | |
1369 | false, // is_big_endian | |
1370 | elfcpp::EM_PPC, // machine_code | |
1371 | false, // has_make_symbol | |
1372 | false, // has_resolve | |
1373 | false, // has_code_fill | |
1374 | true, // is_default_stack_executable | |
b3ce541e | 1375 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1376 | '\0', // wrap_char |
1377 | "/usr/lib/ld.so.1", // dynamic_linker | |
1378 | 0x10000000, // default_text_segment_address | |
1379 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1380 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1381 | false, // isolate_execinstr |
1382 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1383 | elfcpp::SHN_UNDEF, // small_common_shndx |
1384 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1385 | 0, // small_common_section_flags | |
05a352e6 DK |
1386 | 0, // large_common_section_flags |
1387 | NULL, // attributes_section | |
a67858e0 | 1388 | NULL, // attributes_vendor |
8d9743bd MK |
1389 | "_start", // entry_symbol_name |
1390 | 32, // hash_entry_size | |
42cacb20 DE |
1391 | }; |
1392 | ||
1393 | template<> | |
1394 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1395 | { | |
1396 | 64, // size | |
1397 | true, // is_big_endian | |
1398 | elfcpp::EM_PPC64, // machine_code | |
1399 | false, // has_make_symbol | |
1400 | false, // has_resolve | |
1401 | false, // has_code_fill | |
1402 | true, // is_default_stack_executable | |
b3ce541e | 1403 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1404 | '\0', // wrap_char |
1405 | "/usr/lib/ld.so.1", // dynamic_linker | |
1406 | 0x10000000, // default_text_segment_address | |
1407 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1408 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1409 | false, // isolate_execinstr |
1410 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1411 | elfcpp::SHN_UNDEF, // small_common_shndx |
1412 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1413 | 0, // small_common_section_flags | |
05a352e6 DK |
1414 | 0, // large_common_section_flags |
1415 | NULL, // attributes_section | |
a67858e0 | 1416 | NULL, // attributes_vendor |
8d9743bd MK |
1417 | "_start", // entry_symbol_name |
1418 | 32, // hash_entry_size | |
42cacb20 DE |
1419 | }; |
1420 | ||
1421 | template<> | |
1422 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1423 | { | |
1424 | 64, // size | |
1425 | false, // is_big_endian | |
1426 | elfcpp::EM_PPC64, // machine_code | |
1427 | false, // has_make_symbol | |
1428 | false, // has_resolve | |
1429 | false, // has_code_fill | |
1430 | true, // is_default_stack_executable | |
b3ce541e | 1431 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1432 | '\0', // wrap_char |
1433 | "/usr/lib/ld.so.1", // dynamic_linker | |
1434 | 0x10000000, // default_text_segment_address | |
1435 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1436 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1437 | false, // isolate_execinstr |
1438 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1439 | elfcpp::SHN_UNDEF, // small_common_shndx |
1440 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1441 | 0, // small_common_section_flags | |
05a352e6 DK |
1442 | 0, // large_common_section_flags |
1443 | NULL, // attributes_section | |
a67858e0 | 1444 | NULL, // attributes_vendor |
8d9743bd MK |
1445 | "_start", // entry_symbol_name |
1446 | 32, // hash_entry_size | |
42cacb20 DE |
1447 | }; |
1448 | ||
dd93cd0a AM |
1449 | inline bool |
1450 | is_branch_reloc(unsigned int r_type) | |
1451 | { | |
1452 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1453 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1454 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1455 | || r_type == elfcpp::R_POWERPC_REL14 | |
1456 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1457 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1458 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1459 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1460 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1461 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1462 | } | |
1463 | ||
1464 | // If INSN is an opcode that may be used with an @tls operand, return | |
1465 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1466 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1467 | uint32_t | |
1468 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1469 | { | |
1470 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1471 | return 0; | |
1472 | ||
1473 | unsigned int rtra; | |
1474 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1475 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1476 | else if (((insn >> 16) & 0x1f) == reg) | |
1477 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1478 | else | |
1479 | return 0; | |
1480 | ||
1481 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1482 | // add -> addi | |
1483 | insn = 14 << 26; | |
1484 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1485 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1486 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1487 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1488 | // load and store indexed -> dform | |
1489 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1490 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1491 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1492 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1493 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1494 | // lwax -> lwa | |
1495 | insn = (58 << 26) | 2; | |
1496 | else | |
1497 | return 0; | |
1498 | insn |= rtra; | |
1499 | return insn; | |
1500 | } | |
1501 | ||
dd93cd0a | 1502 | |
42cacb20 DE |
1503 | template<int size, bool big_endian> |
1504 | class Powerpc_relocate_functions | |
1505 | { | |
dd93cd0a | 1506 | public: |
f4baf0d4 | 1507 | enum Overflow_check |
dd93cd0a | 1508 | { |
f4baf0d4 AM |
1509 | CHECK_NONE, |
1510 | CHECK_SIGNED, | |
b80eed39 AM |
1511 | CHECK_UNSIGNED, |
1512 | CHECK_BITFIELD, | |
1513 | CHECK_LOW_INSN, | |
1514 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1515 | }; |
1516 | ||
f4baf0d4 | 1517 | enum Status |
dd93cd0a | 1518 | { |
f4baf0d4 AM |
1519 | STATUS_OK, |
1520 | STATUS_OVERFLOW | |
1521 | }; | |
dd93cd0a | 1522 | |
42cacb20 | 1523 | private: |
c9269dff | 1524 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff | 1525 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
a680de9a | 1526 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword SignedAddress; |
c9269dff | 1527 | |
dd93cd0a AM |
1528 | template<int valsize> |
1529 | static inline bool | |
1530 | has_overflow_signed(Address value) | |
1531 | { | |
1532 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1533 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1534 | limit <<= ((valsize - 1) >> 1); | |
1535 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1536 | return value + limit > (limit << 1) - 1; | |
1537 | } | |
1538 | ||
1539 | template<int valsize> | |
1540 | static inline bool | |
b80eed39 | 1541 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1542 | { |
1543 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1544 | limit <<= ((valsize - 1) >> 1); | |
1545 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1546 | return value > (limit << 1) - 1; |
1547 | } | |
1548 | ||
1549 | template<int valsize> | |
1550 | static inline bool | |
1551 | has_overflow_bitfield(Address value) | |
1552 | { | |
1553 | return (has_overflow_unsigned<valsize>(value) | |
1554 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1555 | } |
1556 | ||
1557 | template<int valsize> | |
f4baf0d4 AM |
1558 | static inline Status |
1559 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1560 | { |
f4baf0d4 | 1561 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1562 | { |
1563 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1564 | return STATUS_OVERFLOW; |
dd93cd0a | 1565 | } |
b80eed39 AM |
1566 | else if (overflow == CHECK_UNSIGNED) |
1567 | { | |
1568 | if (has_overflow_unsigned<valsize>(value)) | |
1569 | return STATUS_OVERFLOW; | |
1570 | } | |
f4baf0d4 | 1571 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1572 | { |
1573 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1574 | return STATUS_OVERFLOW; |
dd93cd0a | 1575 | } |
f4baf0d4 | 1576 | return STATUS_OK; |
dd93cd0a AM |
1577 | } |
1578 | ||
cf43a2fe | 1579 | // Do a simple RELA relocation |
0cfb0717 | 1580 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1581 | static inline Status |
1582 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1583 | { |
0cfb0717 | 1584 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1585 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1586 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1587 | return overflowed<valsize>(value, overflow); |
1588 | } | |
1589 | ||
0cfb0717 | 1590 | template<int fieldsize, int valsize> |
f4baf0d4 | 1591 | static inline Status |
42cacb20 DE |
1592 | rela(unsigned char* view, |
1593 | unsigned int right_shift, | |
0cfb0717 | 1594 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1595 | Address value, |
f4baf0d4 | 1596 | Overflow_check overflow) |
42cacb20 | 1597 | { |
0cfb0717 | 1598 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1599 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1600 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1601 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1602 | val &= ~dst_mask; |
1603 | reloc &= dst_mask; | |
0cfb0717 | 1604 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1605 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1606 | } |
1607 | ||
cf43a2fe | 1608 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1609 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1610 | static inline Status |
1611 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1612 | { |
0cfb0717 | 1613 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1614 | return overflowed<valsize>(value, overflow); |
1615 | } | |
1616 | ||
0cfb0717 | 1617 | template<int fieldsize, int valsize> |
f4baf0d4 | 1618 | static inline Status |
cf43a2fe AM |
1619 | rela_ua(unsigned char* view, |
1620 | unsigned int right_shift, | |
0cfb0717 | 1621 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1622 | Address value, |
f4baf0d4 | 1623 | Overflow_check overflow) |
42cacb20 | 1624 | { |
0cfb0717 | 1625 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1626 | Valtype; |
0cfb0717 | 1627 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1628 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1629 | val &= ~dst_mask; |
1630 | reloc &= dst_mask; | |
0cfb0717 | 1631 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1632 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1633 | } |
1634 | ||
42cacb20 | 1635 | public: |
dd93cd0a | 1636 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1637 | static inline void |
dd93cd0a | 1638 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1639 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1640 | |
dd93cd0a | 1641 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1642 | static inline void |
dd93cd0a | 1643 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1644 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1645 | |
1646 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1647 | static inline Status |
1648 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1649 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1650 | |
1651 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1652 | static inline Status |
1653 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1654 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1655 | |
1656 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1657 | static inline Status |
1658 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1659 | { |
0cfb0717 AM |
1660 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1661 | value, overflow); | |
f4baf0d4 AM |
1662 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1663 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1664 | return stat; |
1665 | } | |
42cacb20 DE |
1666 | |
1667 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1668 | static inline Status |
1669 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1670 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 1671 | |
dd93cd0a | 1672 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1673 | static inline Status |
1674 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1675 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 1676 | |
dd93cd0a | 1677 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1678 | static inline Status |
1679 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1680 | { |
0cfb0717 | 1681 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 1682 | if ((value & 3) != 0) |
f4baf0d4 | 1683 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
1684 | return stat; |
1685 | } | |
42cacb20 | 1686 | |
a680de9a PB |
1687 | // R_POWERPC_ADDR16_DQ: (Symbol + Addend) & 0xfff0 |
1688 | static inline Status | |
1689 | addr16_dq(unsigned char* view, Address value, Overflow_check overflow) | |
1690 | { | |
1691 | Status stat = This::template rela<16,16>(view, 0, 0xfff0, value, overflow); | |
1692 | if ((value & 15) != 0) | |
1693 | stat = STATUS_OVERFLOW; | |
1694 | return stat; | |
1695 | } | |
1696 | ||
42cacb20 DE |
1697 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1698 | static inline void | |
dd93cd0a | 1699 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 1700 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1701 | |
c9269dff | 1702 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1703 | static inline void |
dd93cd0a AM |
1704 | addr16_ha(unsigned char* view, Address value) |
1705 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1706 | |
dd93cd0a | 1707 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1708 | static inline void |
dd93cd0a | 1709 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 1710 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1711 | |
dd93cd0a | 1712 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1713 | static inline void |
dd93cd0a AM |
1714 | addr16_ha2(unsigned char* view, Address value) |
1715 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1716 | |
dd93cd0a | 1717 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1718 | static inline void |
dd93cd0a | 1719 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 1720 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1721 | |
dd93cd0a | 1722 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1723 | static inline void |
dd93cd0a AM |
1724 | addr16_ha3(unsigned char* view, Address value) |
1725 | { This::addr16_hi3(view, value + 0x8000); } | |
1726 | ||
1727 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1728 | static inline Status |
1729 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1730 | { |
0cfb0717 | 1731 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
1732 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1733 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1734 | return stat; |
1735 | } | |
a680de9a PB |
1736 | |
1737 | // R_POWERPC_REL16DX_HA | |
1738 | static inline Status | |
1739 | addr16dx_ha(unsigned char *view, Address value, Overflow_check overflow) | |
1740 | { | |
1741 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
1742 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
1743 | Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); | |
1744 | value += 0x8000; | |
1745 | value = static_cast<SignedAddress>(value) >> 16; | |
1746 | val |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
1747 | elfcpp::Swap<32, big_endian>::writeval(wv, val); | |
1748 | return overflowed<16>(value, overflow); | |
1749 | } | |
cf43a2fe AM |
1750 | }; |
1751 | ||
b4f7960d AM |
1752 | // Set ABI version for input and output. |
1753 | ||
1754 | template<int size, bool big_endian> | |
1755 | void | |
1756 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
1757 | { | |
1758 | this->e_flags_ |= ver; | |
1759 | if (this->abiversion() != 0) | |
1760 | { | |
1761 | Target_powerpc<size, big_endian>* target = | |
1762 | static_cast<Target_powerpc<size, big_endian>*>( | |
1763 | parameters->sized_target<size, big_endian>()); | |
1764 | if (target->abiversion() == 0) | |
1765 | target->set_abiversion(this->abiversion()); | |
1766 | else if (target->abiversion() != this->abiversion()) | |
1767 | gold_error(_("%s: ABI version %d is not compatible " | |
1768 | "with ABI version %d output"), | |
1769 | this->name().c_str(), | |
1770 | this->abiversion(), target->abiversion()); | |
1771 | ||
1772 | } | |
1773 | } | |
1774 | ||
c9269dff AM |
1775 | // Stash away the index of .got2 or .opd in a relocatable object, if |
1776 | // such a section exists. | |
cf43a2fe AM |
1777 | |
1778 | template<int size, bool big_endian> | |
1779 | bool | |
1780 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1781 | Read_symbols_data* sd) | |
1782 | { | |
c9269dff AM |
1783 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1784 | const unsigned char* namesu = sd->section_names->data(); | |
1785 | const char* names = reinterpret_cast<const char*>(namesu); | |
1786 | section_size_type names_size = sd->section_names_size; | |
1787 | const unsigned char* s; | |
1788 | ||
dc3714f3 AM |
1789 | s = this->template find_shdr<size, big_endian>(pshdrs, |
1790 | size == 32 ? ".got2" : ".opd", | |
1791 | names, names_size, NULL); | |
c9269dff AM |
1792 | if (s != NULL) |
1793 | { | |
1794 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1795 | this->special_ = ndx; | |
b4f7960d AM |
1796 | if (size == 64) |
1797 | { | |
1798 | if (this->abiversion() == 0) | |
1799 | this->set_abiversion(1); | |
1800 | else if (this->abiversion() > 1) | |
1801 | gold_error(_("%s: .opd invalid in abiv%d"), | |
1802 | this->name().c_str(), this->abiversion()); | |
1803 | } | |
c9269dff AM |
1804 | } |
1805 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); | |
1806 | } | |
1807 | ||
1808 | // Examine .rela.opd to build info about function entry points. | |
1809 | ||
1810 | template<int size, bool big_endian> | |
1811 | void | |
1812 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
1813 | size_t reloc_count, | |
1814 | const unsigned char* prelocs, | |
1815 | const unsigned char* plocal_syms) | |
1816 | { | |
1817 | if (size == 64) | |
cf43a2fe | 1818 | { |
0e123f69 AM |
1819 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
1820 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
c9269dff | 1821 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
ec4dbad3 AM |
1822 | Address expected_off = 0; |
1823 | bool regular = true; | |
1824 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
1825 | |
1826 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 1827 | { |
c9269dff AM |
1828 | Reltype reloc(prelocs); |
1829 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
1830 | = reloc.get_r_info(); | |
1831 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
1832 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
1833 | { | |
1834 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1835 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
1836 | bool is_ordinary; | |
1837 | unsigned int shndx; | |
1838 | if (r_sym < this->local_symbol_count()) | |
1839 | { | |
1840 | typename elfcpp::Sym<size, big_endian> | |
1841 | lsym(plocal_syms + r_sym * sym_size); | |
1842 | shndx = lsym.get_st_shndx(); | |
1843 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1844 | value = lsym.get_st_value(); | |
1845 | } | |
1846 | else | |
1847 | shndx = this->symbol_section_and_value(r_sym, &value, | |
1848 | &is_ordinary); | |
1849 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
1850 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
1851 | if (i == 2) |
1852 | { | |
1853 | expected_off = reloc.get_r_offset(); | |
1854 | opd_ent_size = expected_off; | |
1855 | } | |
1856 | else if (expected_off != reloc.get_r_offset()) | |
1857 | regular = false; | |
1858 | expected_off += opd_ent_size; | |
1859 | } | |
1860 | else if (r_type == elfcpp::R_PPC64_TOC) | |
1861 | { | |
1862 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
1863 | regular = false; | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
1868 | this->name().c_str(), r_type); | |
1869 | regular = false; | |
c9269dff AM |
1870 | } |
1871 | } | |
ec4dbad3 AM |
1872 | if (reloc_count <= 2) |
1873 | opd_ent_size = this->section_size(this->opd_shndx()); | |
1874 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
1875 | regular = false; | |
1876 | if (!regular) | |
1877 | { | |
1878 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
1879 | this->name().c_str()); | |
1880 | opd_ent_size = 0; | |
1881 | } | |
c9269dff AM |
1882 | } |
1883 | } | |
1884 | ||
1885 | template<int size, bool big_endian> | |
1886 | void | |
1887 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
1888 | { | |
1889 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
1890 | if (size == 64) | |
1891 | { | |
1892 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
1893 | p != rd->relocs.end(); | |
1894 | ++p) | |
1895 | { | |
1896 | if (p->data_shndx == this->opd_shndx()) | |
1897 | { | |
ec4dbad3 AM |
1898 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
1899 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
1900 | if (opd_size != 0) | |
1901 | { | |
1902 | this->init_opd(opd_size); | |
1903 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
1904 | rd->local_symbols->data()); | |
1905 | } | |
c9269dff AM |
1906 | break; |
1907 | } | |
cf43a2fe AM |
1908 | } |
1909 | } | |
cf43a2fe AM |
1910 | } |
1911 | ||
b4f7960d AM |
1912 | // Read the symbols then set up st_other vector. |
1913 | ||
1914 | template<int size, bool big_endian> | |
1915 | void | |
1916 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1917 | { | |
f35c4853 | 1918 | this->base_read_symbols(sd); |
b4f7960d AM |
1919 | if (size == 64) |
1920 | { | |
1921 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1922 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1923 | const unsigned int loccount = this->do_local_symbol_count(); | |
1924 | if (loccount != 0) | |
1925 | { | |
1926 | this->st_other_.resize(loccount); | |
1927 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1928 | off_t locsize = loccount * sym_size; | |
1929 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
1930 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
1931 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
1932 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
1933 | locsize, true, false); | |
1934 | psyms += sym_size; | |
1935 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
1936 | { | |
1937 | elfcpp::Sym<size, big_endian> sym(psyms); | |
1938 | unsigned char st_other = sym.get_st_other(); | |
1939 | this->st_other_[i] = st_other; | |
1940 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1941 | { | |
1942 | if (this->abiversion() == 0) | |
1943 | this->set_abiversion(2); | |
1944 | else if (this->abiversion() < 2) | |
1945 | gold_error(_("%s: local symbol %d has invalid st_other" | |
1946 | " for ABI version 1"), | |
1947 | this->name().c_str(), i); | |
1948 | } | |
1949 | } | |
1950 | } | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | template<int size, bool big_endian> | |
1955 | void | |
1956 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
1957 | { | |
1958 | this->e_flags_ |= ver; | |
1959 | if (this->abiversion() != 0) | |
1960 | { | |
1961 | Target_powerpc<size, big_endian>* target = | |
1962 | static_cast<Target_powerpc<size, big_endian>*>( | |
1963 | parameters->sized_target<size, big_endian>()); | |
1964 | if (target->abiversion() == 0) | |
1965 | target->set_abiversion(this->abiversion()); | |
1966 | else if (target->abiversion() != this->abiversion()) | |
1967 | gold_error(_("%s: ABI version %d is not compatible " | |
1968 | "with ABI version %d output"), | |
1969 | this->name().c_str(), | |
1970 | this->abiversion(), target->abiversion()); | |
1971 | ||
1972 | } | |
1973 | } | |
1974 | ||
f35c4853 | 1975 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
1976 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
1977 | ||
1978 | template<int size, bool big_endian> | |
1979 | void | |
1980 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1981 | { | |
f35c4853 | 1982 | this->base_read_symbols(sd); |
dc3714f3 AM |
1983 | if (size == 64) |
1984 | { | |
1985 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1986 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1987 | const unsigned char* namesu = sd->section_names->data(); | |
1988 | const char* names = reinterpret_cast<const char*>(namesu); | |
1989 | const unsigned char* s = NULL; | |
1990 | const unsigned char* opd; | |
1991 | section_size_type opd_size; | |
1992 | ||
1993 | // Find and read .opd section. | |
1994 | while (1) | |
1995 | { | |
1996 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
1997 | sd->section_names_size, | |
1998 | s); | |
1999 | if (s == NULL) | |
2000 | return; | |
2001 | ||
2002 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2003 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2004 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
2005 | { | |
b4f7960d AM |
2006 | if (this->abiversion() == 0) |
2007 | this->set_abiversion(1); | |
2008 | else if (this->abiversion() > 1) | |
2009 | gold_error(_("%s: .opd invalid in abiv%d"), | |
2010 | this->name().c_str(), this->abiversion()); | |
2011 | ||
dc3714f3 AM |
2012 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
2013 | this->opd_address_ = shdr.get_sh_addr(); | |
2014 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
2015 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
2016 | true, false); | |
2017 | break; | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | // Build set of executable sections. | |
2022 | // Using a set is probably overkill. There is likely to be only | |
2023 | // a few executable sections, typically .init, .text and .fini, | |
2024 | // and they are generally grouped together. | |
2025 | typedef std::set<Sec_info> Exec_sections; | |
2026 | Exec_sections exec_sections; | |
2027 | s = pshdrs; | |
2028 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
2029 | { | |
2030 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
2031 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
2032 | && ((shdr.get_sh_flags() | |
2033 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2034 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2035 | && shdr.get_sh_size() != 0) | |
2036 | { | |
2037 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2038 | shdr.get_sh_size(), i)); | |
2039 | } | |
2040 | } | |
2041 | if (exec_sections.empty()) | |
2042 | return; | |
2043 | ||
2044 | // Look over the OPD entries. This is complicated by the fact | |
2045 | // that some binaries will use two-word entries while others | |
2046 | // will use the standard three-word entries. In most cases | |
2047 | // the third word (the environment pointer for languages like | |
2048 | // Pascal) is unused and will be zero. If the third word is | |
2049 | // used it should not be pointing into executable sections, | |
2050 | // I think. | |
2051 | this->init_opd(opd_size); | |
2052 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2053 | { | |
2054 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2055 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2056 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2057 | if (val == 0) | |
2058 | // Chances are that this is the third word of an OPD entry. | |
2059 | continue; | |
2060 | typename Exec_sections::const_iterator e | |
2061 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2062 | if (e != exec_sections.begin()) | |
2063 | { | |
2064 | --e; | |
2065 | if (e->start <= val && val < e->start + e->len) | |
2066 | { | |
2067 | // We have an address in an executable section. | |
2068 | // VAL ought to be the function entry, set it up. | |
2069 | this->set_opd_ent(p - opd, e->shndx, val); | |
2070 | // Skip second word of OPD entry, the TOC pointer. | |
2071 | p += 8; | |
2072 | } | |
2073 | } | |
2074 | // If we didn't match any executable sections, we likely | |
2075 | // have a non-zero third word in the OPD entry. | |
2076 | } | |
2077 | } | |
2078 | } | |
2079 | ||
f43ba157 | 2080 | // Set up some symbols. |
26a4e9cb AM |
2081 | |
2082 | template<int size, bool big_endian> | |
2083 | void | |
f43ba157 AM |
2084 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2085 | Symbol_table* symtab, | |
2086 | Layout* layout) | |
26a4e9cb AM |
2087 | { |
2088 | if (size == 32) | |
2089 | { | |
bb66a627 AM |
2090 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2091 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2092 | // non-relative dynamic relocs). The proper value will be |
2093 | // updated later. | |
2094 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2095 | if (gotsym != NULL && gotsym->is_undefined()) | |
2096 | { | |
2097 | Target_powerpc<size, big_endian>* target = | |
2098 | static_cast<Target_powerpc<size, big_endian>*>( | |
2099 | parameters->sized_target<size, big_endian>()); | |
2100 | Output_data_got_powerpc<size, big_endian>* got | |
2101 | = target->got_section(symtab, layout); | |
2102 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2103 | Symbol_table::PREDEFINED, | |
2104 | got, 0, 0, | |
2105 | elfcpp::STT_OBJECT, | |
bb66a627 | 2106 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2107 | elfcpp::STV_HIDDEN, 0, |
2108 | false, false); | |
2109 | } | |
2110 | ||
2111 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2112 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2113 | if (sdasym != NULL && sdasym->is_undefined()) | |
2114 | { | |
2115 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2116 | Output_section* os | |
2117 | = layout->add_output_section_data(".sdata", 0, | |
2118 | elfcpp::SHF_ALLOC | |
2119 | | elfcpp::SHF_WRITE, | |
2120 | sdata, ORDER_SMALL_DATA, false); | |
2121 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2122 | Symbol_table::PREDEFINED, | |
2123 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2124 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2125 | 0, false, false); | |
2126 | } | |
2127 | } | |
b4f7960d AM |
2128 | else |
2129 | { | |
2130 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2131 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2132 | if (gotsym != NULL && gotsym->is_undefined()) | |
2133 | { | |
2134 | Target_powerpc<size, big_endian>* target = | |
2135 | static_cast<Target_powerpc<size, big_endian>*>( | |
2136 | parameters->sized_target<size, big_endian>()); | |
2137 | Output_data_got_powerpc<size, big_endian>* got | |
2138 | = target->got_section(symtab, layout); | |
2139 | symtab->define_in_output_data(".TOC.", NULL, | |
2140 | Symbol_table::PREDEFINED, | |
2141 | got, 0x8000, 0, | |
2142 | elfcpp::STT_OBJECT, | |
2143 | elfcpp::STB_LOCAL, | |
2144 | elfcpp::STV_HIDDEN, 0, | |
2145 | false, false); | |
2146 | } | |
2147 | } | |
26a4e9cb AM |
2148 | } |
2149 | ||
cf43a2fe AM |
2150 | // Set up PowerPC target specific relobj. |
2151 | ||
2152 | template<int size, bool big_endian> | |
2153 | Object* | |
2154 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2155 | const std::string& name, | |
2156 | Input_file* input_file, | |
2157 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2158 | { | |
2159 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2160 | // ET_EXEC files are valid input for --just-symbols/-R, |
2161 | // and we treat them as relocatable objects. | |
2162 | if (et == elfcpp::ET_REL | |
2163 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2164 | { |
2165 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2166 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2167 | obj->setup(); |
2168 | return obj; | |
2169 | } | |
2170 | else if (et == elfcpp::ET_DYN) | |
2171 | { | |
dc3714f3 AM |
2172 | Powerpc_dynobj<size, big_endian>* obj = |
2173 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2174 | obj->setup(); |
2175 | return obj; | |
2176 | } | |
2177 | else | |
2178 | { | |
c9269dff | 2179 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2180 | return NULL; |
2181 | } | |
2182 | } | |
2183 | ||
2184 | template<int size, bool big_endian> | |
2185 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2186 | { | |
2187 | public: | |
2188 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2189 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2190 | ||
2191 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2192 | : Output_data_got<size, big_endian>(), | |
2193 | symtab_(symtab), layout_(layout), | |
2194 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2195 | header_index_(size == 32 ? 0x2000 : 0) | |
751e4d66 AM |
2196 | { |
2197 | if (size == 64) | |
2198 | this->set_addralign(256); | |
2199 | } | |
cf43a2fe | 2200 | |
e84fe78f AM |
2201 | // Override all the Output_data_got methods we use so as to first call |
2202 | // reserve_ent(). | |
2203 | bool | |
2204 | add_global(Symbol* gsym, unsigned int got_type) | |
2205 | { | |
2206 | this->reserve_ent(); | |
2207 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2208 | } | |
2209 | ||
2210 | bool | |
2211 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2212 | { | |
2213 | this->reserve_ent(); | |
2214 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2215 | } | |
2216 | ||
2217 | bool | |
2218 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2219 | { return this->add_global_plt(gsym, got_type); } | |
2220 | ||
2221 | void | |
2222 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2223 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2224 | { | |
2225 | this->reserve_ent(); | |
2226 | Output_data_got<size, big_endian>:: | |
2227 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2228 | } | |
2229 | ||
2230 | void | |
2231 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2232 | Output_data_reloc_generic* rel_dyn, | |
2233 | unsigned int r_type_1, unsigned int r_type_2) | |
2234 | { | |
2235 | this->reserve_ent(2); | |
2236 | Output_data_got<size, big_endian>:: | |
2237 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2238 | } | |
2239 | ||
2240 | bool | |
2241 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2242 | { | |
2243 | this->reserve_ent(); | |
2244 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2245 | got_type); | |
2246 | } | |
2247 | ||
2248 | bool | |
2249 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2250 | { | |
2251 | this->reserve_ent(); | |
2252 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2253 | got_type); | |
2254 | } | |
2255 | ||
2256 | bool | |
2257 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2258 | { return this->add_local_plt(object, sym_index, got_type); } | |
2259 | ||
2260 | void | |
2261 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2262 | unsigned int got_type, | |
2263 | Output_data_reloc_generic* rel_dyn, | |
2264 | unsigned int r_type) | |
2265 | { | |
2266 | this->reserve_ent(2); | |
2267 | Output_data_got<size, big_endian>:: | |
2268 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2269 | } | |
2270 | ||
2271 | unsigned int | |
2272 | add_constant(Valtype constant) | |
2273 | { | |
2274 | this->reserve_ent(); | |
2275 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2276 | } | |
2277 | ||
dd93cd0a AM |
2278 | unsigned int |
2279 | add_constant_pair(Valtype c1, Valtype c2) | |
2280 | { | |
2281 | this->reserve_ent(2); | |
e84fe78f | 2282 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2283 | } |
2284 | ||
2285 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2286 | unsigned int |
2287 | g_o_t() const | |
2288 | { | |
2289 | return this->got_offset(this->header_index_); | |
42cacb20 | 2290 | } |
cf43a2fe | 2291 | |
dd93cd0a AM |
2292 | // Offset of base used to access the GOT/TOC. |
2293 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2294 | Valtype |
dd93cd0a AM |
2295 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2296 | { | |
2297 | if (size == 32) | |
2298 | return this->g_o_t(); | |
2299 | else | |
2300 | return (this->output_section()->address() | |
2301 | + object->toc_base_offset() | |
2302 | - this->address()); | |
2303 | } | |
2304 | ||
cf43a2fe AM |
2305 | // Ensure our GOT has a header. |
2306 | void | |
2307 | set_final_data_size() | |
2308 | { | |
2309 | if (this->header_ent_cnt_ != 0) | |
2310 | this->make_header(); | |
2311 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2312 | } | |
2313 | ||
2314 | // First word of GOT header needs some values that are not | |
2315 | // handled by Output_data_got so poke them in here. | |
2316 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2317 | void | |
2318 | do_write(Output_file* of) | |
2319 | { | |
c9824451 AM |
2320 | Valtype val = 0; |
2321 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2322 | val = this->layout_->dynamic_section()->address(); | |
2323 | if (size == 64) | |
2324 | val = this->output_section()->address() + 0x8000; | |
2325 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2326 | Output_data_got<size, big_endian>::do_write(of); |
2327 | } | |
2328 | ||
2329 | private: | |
2330 | void | |
2331 | reserve_ent(unsigned int cnt = 1) | |
2332 | { | |
2333 | if (this->header_ent_cnt_ == 0) | |
2334 | return; | |
2335 | if (this->num_entries() + cnt > this->header_index_) | |
2336 | this->make_header(); | |
2337 | } | |
2338 | ||
2339 | void | |
2340 | make_header() | |
2341 | { | |
2342 | this->header_ent_cnt_ = 0; | |
2343 | this->header_index_ = this->num_entries(); | |
2344 | if (size == 32) | |
2345 | { | |
2346 | Output_data_got<size, big_endian>::add_constant(0); | |
2347 | Output_data_got<size, big_endian>::add_constant(0); | |
2348 | Output_data_got<size, big_endian>::add_constant(0); | |
2349 | ||
2350 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2351 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2352 | if (gotsym != NULL) | |
2353 | { | |
2354 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2355 | sym->set_value(this->g_o_t()); | |
2356 | } | |
2357 | else | |
2358 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2359 | Symbol_table::PREDEFINED, | |
2360 | this, this->g_o_t(), 0, | |
2361 | elfcpp::STT_OBJECT, | |
2362 | elfcpp::STB_LOCAL, | |
2363 | elfcpp::STV_HIDDEN, 0, | |
2364 | false, false); | |
cf43a2fe AM |
2365 | } |
2366 | else | |
2367 | Output_data_got<size, big_endian>::add_constant(0); | |
2368 | } | |
2369 | ||
2370 | // Stashed pointers. | |
2371 | Symbol_table* symtab_; | |
2372 | Layout* layout_; | |
2373 | ||
2374 | // GOT header size. | |
2375 | unsigned int header_ent_cnt_; | |
2376 | // GOT header index. | |
2377 | unsigned int header_index_; | |
42cacb20 DE |
2378 | }; |
2379 | ||
2380 | // Get the GOT section, creating it if necessary. | |
2381 | ||
2382 | template<int size, bool big_endian> | |
cf43a2fe | 2383 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2384 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2385 | Layout* layout) | |
2386 | { | |
2387 | if (this->got_ == NULL) | |
2388 | { | |
2389 | gold_assert(symtab != NULL && layout != NULL); | |
2390 | ||
cf43a2fe AM |
2391 | this->got_ |
2392 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2393 | |
2394 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2395 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2396 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2397 | } |
2398 | ||
2399 | return this->got_; | |
2400 | } | |
2401 | ||
2402 | // Get the dynamic reloc section, creating it if necessary. | |
2403 | ||
2404 | template<int size, bool big_endian> | |
2405 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2406 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2407 | { | |
2408 | if (this->rela_dyn_ == NULL) | |
2409 | { | |
2410 | gold_assert(layout != NULL); | |
2411 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2412 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2413 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2414 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2415 | } |
2416 | return this->rela_dyn_; | |
2417 | } | |
2418 | ||
b3ccdeb5 AM |
2419 | // Similarly, but for ifunc symbols get the one for ifunc. |
2420 | ||
2421 | template<int size, bool big_endian> | |
2422 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2423 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2424 | Layout* layout, | |
2425 | bool for_ifunc) | |
2426 | { | |
2427 | if (!for_ifunc) | |
2428 | return this->rela_dyn_section(layout); | |
2429 | ||
2430 | if (this->iplt_ == NULL) | |
2431 | this->make_iplt_section(symtab, layout); | |
2432 | return this->iplt_->rel_plt(); | |
2433 | } | |
2434 | ||
ec661b9d AM |
2435 | class Stub_control |
2436 | { | |
2437 | public: | |
2438 | // Determine the stub group size. The group size is the absolute | |
2439 | // value of the parameter --stub-group-size. If --stub-group-size | |
a5018ae5 | 2440 | // is passed a negative value, we restrict stubs to be always after |
ec661b9d | 2441 | // the stubbed branches. |
1c3a5fbe AM |
2442 | Stub_control(int32_t size, bool no_size_errors, bool multi_os) |
2443 | : stub_group_size_(abs(size)), stubs_always_after_branch_(size < 0), | |
2444 | suppress_size_errors_(no_size_errors), multi_os_(multi_os), | |
2445 | state_(NO_GROUP), group_size_(0), group_start_addr_(0), | |
2446 | owner_(NULL), output_section_(NULL) | |
ec661b9d | 2447 | { |
ec661b9d AM |
2448 | } |
2449 | ||
2450 | // Return true iff input section can be handled by current stub | |
2451 | // group. | |
2452 | bool | |
2453 | can_add_to_stub_group(Output_section* o, | |
2454 | const Output_section::Input_section* i, | |
2455 | bool has14); | |
2456 | ||
2457 | const Output_section::Input_section* | |
2458 | owner() | |
2459 | { return owner_; } | |
2460 | ||
2461 | Output_section* | |
2462 | output_section() | |
2463 | { return output_section_; } | |
2464 | ||
a20605cf AM |
2465 | void |
2466 | set_output_and_owner(Output_section* o, | |
2467 | const Output_section::Input_section* i) | |
2468 | { | |
2469 | this->output_section_ = o; | |
2470 | this->owner_ = i; | |
2471 | } | |
2472 | ||
ec661b9d AM |
2473 | private: |
2474 | typedef enum | |
2475 | { | |
1c3a5fbe | 2476 | // Initial state. |
ec661b9d | 2477 | NO_GROUP, |
1c3a5fbe | 2478 | // Adding group sections before the stubs. |
ec661b9d | 2479 | FINDING_STUB_SECTION, |
1c3a5fbe | 2480 | // Adding group sections after the stubs. |
ec661b9d AM |
2481 | HAS_STUB_SECTION |
2482 | } State; | |
2483 | ||
ec661b9d | 2484 | uint32_t stub_group_size_; |
a5018ae5 | 2485 | bool stubs_always_after_branch_; |
ec661b9d | 2486 | bool suppress_size_errors_; |
1c3a5fbe AM |
2487 | // True if a stub group can serve multiple output sections. |
2488 | bool multi_os_; | |
2489 | State state_; | |
8a37735f AM |
2490 | // Current max size of group. Starts at stub_group_size_ but is |
2491 | // reduced to stub_group_size_/1024 on seeing a section with | |
2492 | // external conditional branches. | |
2493 | uint32_t group_size_; | |
a5018ae5 | 2494 | uint64_t group_start_addr_; |
57f6d32d AM |
2495 | // owner_ and output_section_ specify the section to which stubs are |
2496 | // attached. The stubs are placed at the end of this section. | |
ec661b9d AM |
2497 | const Output_section::Input_section* owner_; |
2498 | Output_section* output_section_; | |
2499 | }; | |
2500 | ||
0cfdc767 | 2501 | // Return true iff input section can be handled by current stub |
a5018ae5 AM |
2502 | // group. Sections are presented to this function in order, |
2503 | // so the first section is the head of the group. | |
ec661b9d AM |
2504 | |
2505 | bool | |
2506 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2507 | const Output_section::Input_section* i, | |
2508 | bool has14) | |
2509 | { | |
ec661b9d AM |
2510 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; |
2511 | uint64_t this_size; | |
2512 | uint64_t start_addr = o->address(); | |
2513 | ||
2514 | if (whole_sec) | |
2515 | // .init and .fini sections are pasted together to form a single | |
2516 | // function. We can't be adding stubs in the middle of the function. | |
2517 | this_size = o->data_size(); | |
2518 | else | |
2519 | { | |
2520 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
2521 | this_size = i->data_size(); | |
2522 | } | |
57f6d32d | 2523 | |
a5018ae5 | 2524 | uint64_t end_addr = start_addr + this_size; |
8a37735f AM |
2525 | uint32_t group_size = this->stub_group_size_; |
2526 | if (has14) | |
2527 | this->group_size_ = group_size = group_size >> 10; | |
ec661b9d | 2528 | |
57f6d32d | 2529 | if (this_size > group_size && !this->suppress_size_errors_) |
ec661b9d AM |
2530 | gold_warning(_("%s:%s exceeds group size"), |
2531 | i->relobj()->name().c_str(), | |
2532 | i->relobj()->section_name(i->shndx()).c_str()); | |
2533 | ||
afe002dd AM |
2534 | gold_debug(DEBUG_TARGET, "maybe add%s %s:%s size=%#llx total=%#llx", |
2535 | has14 ? " 14bit" : "", | |
2536 | i->relobj()->name().c_str(), | |
2537 | i->relobj()->section_name(i->shndx()).c_str(), | |
2538 | (long long) this_size, | |
a5018ae5 AM |
2539 | (this->state_ == NO_GROUP |
2540 | ? this_size | |
2541 | : (long long) end_addr - this->group_start_addr_)); | |
afe002dd | 2542 | |
1c3a5fbe AM |
2543 | if (this->state_ == NO_GROUP) |
2544 | { | |
2545 | // Only here on very first use of Stub_control | |
2546 | this->owner_ = i; | |
2547 | this->output_section_ = o; | |
2548 | this->state_ = FINDING_STUB_SECTION; | |
2549 | this->group_size_ = group_size; | |
2550 | this->group_start_addr_ = start_addr; | |
2551 | return true; | |
2552 | } | |
2553 | else if (!this->multi_os_ && this->output_section_ != o) | |
2554 | ; | |
2555 | else if (this->state_ == HAS_STUB_SECTION) | |
ec661b9d | 2556 | { |
a5018ae5 | 2557 | // Can we add this section, which is after the stubs, to the |
57f6d32d | 2558 | // group? |
a5018ae5 | 2559 | if (end_addr - this->group_start_addr_ <= this->group_size_) |
57f6d32d | 2560 | return true; |
ec661b9d | 2561 | } |
a5018ae5 | 2562 | else if (this->state_ == FINDING_STUB_SECTION) |
ec661b9d | 2563 | { |
a5018ae5 AM |
2564 | if ((whole_sec && this->output_section_ == o) |
2565 | || end_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2566 | { |
a5018ae5 | 2567 | // Stubs are added at the end of "owner_". |
57f6d32d AM |
2568 | this->owner_ = i; |
2569 | this->output_section_ = o; | |
a5018ae5 | 2570 | return true; |
57f6d32d | 2571 | } |
a5018ae5 AM |
2572 | // The group before the stubs has reached maximum size. |
2573 | // Now see about adding sections after the stubs to the | |
2574 | // group. If the current section has a 14-bit branch and | |
2575 | // the group before the stubs exceeds group_size_ (because | |
2576 | // they didn't have 14-bit branches), don't add sections | |
2577 | // after the stubs: The size of stubs for such a large | |
2578 | // group may exceed the reach of a 14-bit branch. | |
2579 | if (!this->stubs_always_after_branch_ | |
2580 | && this_size <= this->group_size_ | |
2581 | && start_addr - this->group_start_addr_ <= this->group_size_) | |
57f6d32d | 2582 | { |
a5018ae5 AM |
2583 | gold_debug(DEBUG_TARGET, "adding after stubs"); |
2584 | this->state_ = HAS_STUB_SECTION; | |
2585 | this->group_start_addr_ = start_addr; | |
57f6d32d AM |
2586 | return true; |
2587 | } | |
ec661b9d | 2588 | } |
a5018ae5 AM |
2589 | else |
2590 | gold_unreachable(); | |
57f6d32d | 2591 | |
1c3a5fbe AM |
2592 | gold_debug(DEBUG_TARGET, |
2593 | !this->multi_os_ && this->output_section_ != o | |
2594 | ? "nope, new output section\n" | |
2595 | : "nope, didn't fit\n"); | |
afe002dd | 2596 | |
57f6d32d AM |
2597 | // The section fails to fit in the current group. Set up a few |
2598 | // things for the next group. owner_ and output_section_ will be | |
2599 | // set later after we've retrieved those values for the current | |
2600 | // group. | |
2601 | this->state_ = FINDING_STUB_SECTION; | |
8a37735f | 2602 | this->group_size_ = group_size; |
a5018ae5 | 2603 | this->group_start_addr_ = start_addr; |
57f6d32d | 2604 | return false; |
ec661b9d AM |
2605 | } |
2606 | ||
2607 | // Look over all the input sections, deciding where to place stubs. | |
2608 | ||
2609 | template<int size, bool big_endian> | |
2610 | void | |
2611 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
2612 | const Task*, |
2613 | bool no_size_errors) | |
ec661b9d | 2614 | { |
1c3a5fbe AM |
2615 | Stub_control stub_control(this->stub_group_size_, no_size_errors, |
2616 | parameters->options().stub_group_multi()); | |
ec661b9d AM |
2617 | |
2618 | // Group input sections and insert stub table | |
a3e60ddb AM |
2619 | Stub_table_owner* table_owner = NULL; |
2620 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
2621 | Layout::Section_list section_list; |
2622 | layout->get_executable_sections(§ion_list); | |
2623 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
a5018ae5 AM |
2624 | for (Layout::Section_list::iterator o = section_list.begin(); |
2625 | o != section_list.end(); | |
ec661b9d AM |
2626 | ++o) |
2627 | { | |
2628 | typedef Output_section::Input_section_list Input_section_list; | |
a5018ae5 AM |
2629 | for (Input_section_list::const_iterator i |
2630 | = (*o)->input_sections().begin(); | |
2631 | i != (*o)->input_sections().end(); | |
ec661b9d AM |
2632 | ++i) |
2633 | { | |
a3e60ddb AM |
2634 | if (i->is_input_section() |
2635 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
2636 | { |
2637 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
2638 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
2639 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
2640 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
2641 | { | |
a3e60ddb AM |
2642 | table_owner->output_section = stub_control.output_section(); |
2643 | table_owner->owner = stub_control.owner(); | |
a20605cf | 2644 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 2645 | table_owner = NULL; |
ec661b9d | 2646 | } |
a3e60ddb AM |
2647 | if (table_owner == NULL) |
2648 | { | |
2649 | table_owner = new Stub_table_owner; | |
2650 | tables.push_back(table_owner); | |
2651 | } | |
2652 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
2653 | } |
2654 | } | |
2655 | } | |
a3e60ddb | 2656 | if (table_owner != NULL) |
0cfdc767 | 2657 | { |
a5018ae5 AM |
2658 | table_owner->output_section = stub_control.output_section(); |
2659 | table_owner->owner = stub_control.owner();; | |
a3e60ddb AM |
2660 | } |
2661 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
2662 | t != tables.end(); | |
2663 | ++t) | |
2664 | { | |
2665 | Stub_table<size, big_endian>* stub_table; | |
2666 | ||
2667 | if ((*t)->owner->is_input_section()) | |
2668 | stub_table = new Stub_table<size, big_endian>(this, | |
2669 | (*t)->output_section, | |
2670 | (*t)->owner); | |
2671 | else if ((*t)->owner->is_relaxed_input_section()) | |
2672 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
2673 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 2674 | else |
a3e60ddb AM |
2675 | gold_unreachable(); |
2676 | this->stub_tables_.push_back(stub_table); | |
2677 | delete *t; | |
0cfdc767 | 2678 | } |
ec661b9d AM |
2679 | } |
2680 | ||
a3e60ddb AM |
2681 | static unsigned long |
2682 | max_branch_delta (unsigned int r_type) | |
2683 | { | |
2684 | if (r_type == elfcpp::R_POWERPC_REL14 | |
2685 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
2686 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
2687 | return 1L << 15; | |
2688 | if (r_type == elfcpp::R_POWERPC_REL24 | |
2689 | || r_type == elfcpp::R_PPC_PLTREL24 | |
2690 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
2691 | return 1L << 25; | |
2692 | return 0; | |
2693 | } | |
2694 | ||
ec661b9d AM |
2695 | // If this branch needs a plt call stub, or a long branch stub, make one. |
2696 | ||
2697 | template<int size, bool big_endian> | |
a3e60ddb | 2698 | bool |
ec661b9d AM |
2699 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
2700 | Stub_table<size, big_endian>* stub_table, | |
2701 | Stub_table<size, big_endian>* ifunc_stub_table, | |
2702 | Symbol_table* symtab) const | |
2703 | { | |
2704 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
2705 | if (sym != NULL && sym->is_forwarder()) | |
2706 | sym = symtab->resolve_forwards(sym); | |
2707 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); | |
88b8e639 AM |
2708 | Target_powerpc<size, big_endian>* target = |
2709 | static_cast<Target_powerpc<size, big_endian>*>( | |
2710 | parameters->sized_target<size, big_endian>()); | |
dc60b26d AM |
2711 | bool ok = true; |
2712 | ||
ec661b9d | 2713 | if (gsym != NULL |
88b8e639 | 2714 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
2715 | : this->object_->local_has_plt_offset(this->r_sym_)) |
2716 | { | |
9055360d AM |
2717 | if (size == 64 |
2718 | && gsym != NULL | |
2719 | && target->abiversion() >= 2 | |
2720 | && !parameters->options().output_is_position_independent() | |
2721 | && !is_branch_reloc(this->r_type_)) | |
2722 | target->glink_section()->add_global_entry(gsym); | |
2723 | else | |
ec661b9d | 2724 | { |
9055360d AM |
2725 | if (stub_table == NULL) |
2726 | stub_table = this->object_->stub_table(this->shndx_); | |
2727 | if (stub_table == NULL) | |
2728 | { | |
2729 | // This is a ref from a data section to an ifunc symbol. | |
2730 | stub_table = ifunc_stub_table; | |
2731 | } | |
2732 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
2733 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2734 | if (from != invalid_address) | |
2735 | from += (this->object_->output_section(this->shndx_)->address() | |
2736 | + this->offset_); | |
9055360d | 2737 | if (gsym != NULL) |
dc60b26d AM |
2738 | ok = stub_table->add_plt_call_entry(from, |
2739 | this->object_, gsym, | |
2740 | this->r_type_, this->addend_); | |
9055360d | 2741 | else |
dc60b26d AM |
2742 | ok = stub_table->add_plt_call_entry(from, |
2743 | this->object_, this->r_sym_, | |
2744 | this->r_type_, this->addend_); | |
ec661b9d | 2745 | } |
ec661b9d AM |
2746 | } |
2747 | else | |
2748 | { | |
cbcb23fa | 2749 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
2750 | if (max_branch_offset == 0) |
2751 | return true; | |
ec661b9d AM |
2752 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2753 | gold_assert(from != invalid_address); | |
2754 | from += (this->object_->output_section(this->shndx_)->address() | |
2755 | + this->offset_); | |
2756 | Address to; | |
2757 | if (gsym != NULL) | |
2758 | { | |
2759 | switch (gsym->source()) | |
2760 | { | |
2761 | case Symbol::FROM_OBJECT: | |
2762 | { | |
2763 | Object* symobj = gsym->object(); | |
2764 | if (symobj->is_dynamic() | |
2765 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 2766 | return true; |
ec661b9d AM |
2767 | bool is_ordinary; |
2768 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
2769 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 2770 | return true; |
ec661b9d AM |
2771 | } |
2772 | break; | |
2773 | ||
2774 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 2775 | return true; |
ec661b9d AM |
2776 | |
2777 | default: | |
2778 | break; | |
2779 | } | |
2780 | Symbol_table::Compute_final_value_status status; | |
2781 | to = symtab->compute_final_value<size>(gsym, &status); | |
2782 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 2783 | return true; |
9055360d AM |
2784 | if (size == 64) |
2785 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
2786 | } |
2787 | else | |
2788 | { | |
2789 | const Symbol_value<size>* psymval | |
2790 | = this->object_->local_symbol(this->r_sym_); | |
2791 | Symbol_value<size> symval; | |
0f125432 CC |
2792 | if (psymval->is_section_symbol()) |
2793 | symval.set_is_section_symbol(); | |
ec661b9d AM |
2794 | typedef Sized_relobj_file<size, big_endian> ObjType; |
2795 | typename ObjType::Compute_final_local_value_status status | |
2796 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
2797 | &symval, symtab); | |
2798 | if (status != ObjType::CFLV_OK | |
2799 | || !symval.has_output_value()) | |
a3e60ddb | 2800 | return true; |
ec661b9d | 2801 | to = symval.value(this->object_, 0); |
9055360d AM |
2802 | if (size == 64) |
2803 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 2804 | } |
cbcb23fa AM |
2805 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
2806 | to += this->addend_; | |
ec661b9d AM |
2807 | if (stub_table == NULL) |
2808 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 2809 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
2810 | { |
2811 | unsigned int dest_shndx; | |
1611bc4a AM |
2812 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
2813 | &to, &dest_shndx)) | |
2814 | return true; | |
ec661b9d AM |
2815 | } |
2816 | Address delta = to - from; | |
2817 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
2818 | { | |
0cfdc767 AM |
2819 | if (stub_table == NULL) |
2820 | { | |
2821 | gold_warning(_("%s:%s: branch in non-executable section," | |
2822 | " no long branch stub for you"), | |
2823 | this->object_->name().c_str(), | |
2824 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 2825 | return true; |
0cfdc767 | 2826 | } |
d49044c7 AM |
2827 | bool save_res = (size == 64 |
2828 | && gsym != NULL | |
2829 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
2830 | && gsym->output_data() == target->savres_section()); | |
dc60b26d AM |
2831 | ok = stub_table->add_long_branch_entry(this->object_, |
2832 | this->r_type_, | |
2833 | from, to, save_res); | |
ec661b9d AM |
2834 | } |
2835 | } | |
dc60b26d AM |
2836 | if (!ok) |
2837 | gold_debug(DEBUG_TARGET, | |
2838 | "branch at %s:%s+%#lx\n" | |
2839 | "can't reach stub attached to %s:%s", | |
2840 | this->object_->name().c_str(), | |
2841 | this->object_->section_name(this->shndx_).c_str(), | |
2842 | (unsigned long) this->offset_, | |
2843 | stub_table->relobj()->name().c_str(), | |
2844 | stub_table->relobj()->section_name(stub_table->shndx()).c_str()); | |
2845 | ||
2846 | return ok; | |
ec661b9d AM |
2847 | } |
2848 | ||
2849 | // Relaxation hook. This is where we do stub generation. | |
2850 | ||
2851 | template<int size, bool big_endian> | |
2852 | bool | |
2853 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
2854 | const Input_objects*, | |
2855 | Symbol_table* symtab, | |
2856 | Layout* layout, | |
2857 | const Task* task) | |
2858 | { | |
2859 | unsigned int prev_brlt_size = 0; | |
2860 | if (pass == 1) | |
ec661b9d | 2861 | { |
b4f7960d AM |
2862 | bool thread_safe |
2863 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
2864 | if (size == 64 | |
2865 | && this->abiversion() < 2 | |
2866 | && !thread_safe | |
2867 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 2868 | { |
e2458743 | 2869 | static const char* const thread_starter[] = |
9e69ed50 AM |
2870 | { |
2871 | "pthread_create", | |
2872 | /* libstdc++ */ | |
2873 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
2874 | /* librt */ | |
2875 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
2876 | "mq_notify", "create_timer", | |
2877 | /* libanl */ | |
2878 | "getaddrinfo_a", | |
2879 | /* libgomp */ | |
80272b8c | 2880 | "GOMP_parallel", |
9e69ed50 | 2881 | "GOMP_parallel_start", |
80272b8c | 2882 | "GOMP_parallel_loop_static", |
9e69ed50 | 2883 | "GOMP_parallel_loop_static_start", |
80272b8c | 2884 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 2885 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 2886 | "GOMP_parallel_loop_guided", |
9e69ed50 | 2887 | "GOMP_parallel_loop_guided_start", |
80272b8c | 2888 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 2889 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 2890 | "GOMP_parallel_sections", |
43819297 | 2891 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
2892 | /* libgo */ |
2893 | "__go_go", | |
9e69ed50 AM |
2894 | }; |
2895 | ||
e2458743 AM |
2896 | if (parameters->options().shared()) |
2897 | thread_safe = true; | |
2898 | else | |
9e69ed50 | 2899 | { |
e2458743 AM |
2900 | for (unsigned int i = 0; |
2901 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
2902 | i++) | |
2903 | { | |
2904 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
2905 | thread_safe = (sym != NULL | |
2906 | && sym->in_reg() | |
2907 | && sym->in_real_elf()); | |
2908 | if (thread_safe) | |
2909 | break; | |
2910 | } | |
9e69ed50 | 2911 | } |
ec661b9d | 2912 | } |
9e69ed50 | 2913 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
2914 | } |
2915 | ||
2916 | if (pass == 1) | |
2917 | { | |
2918 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
2919 | bool no_size_errors = true; | |
2920 | if (this->stub_group_size_ == 1) | |
2921 | this->stub_group_size_ = 0x1c00000; | |
2922 | else if (this->stub_group_size_ == -1) | |
2923 | this->stub_group_size_ = -0x1e00000; | |
2924 | else | |
2925 | no_size_errors = false; | |
2926 | this->group_sections(layout, task, no_size_errors); | |
2927 | } | |
2928 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
2929 | { | |
2930 | this->branch_lookup_table_.clear(); | |
2931 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2932 | p != this->stub_tables_.end(); | |
2933 | ++p) | |
2934 | { | |
2935 | (*p)->clear_stubs(true); | |
2936 | } | |
2937 | this->stub_tables_.clear(); | |
2938 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
57f6d32d | 2939 | gold_info(_("%s: stub group size is too large; retrying with %#x"), |
a3e60ddb AM |
2940 | program_name, this->stub_group_size_); |
2941 | this->group_sections(layout, task, true); | |
ec661b9d AM |
2942 | } |
2943 | ||
2944 | // We need address of stub tables valid for make_stub. | |
2945 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2946 | p != this->stub_tables_.end(); | |
2947 | ++p) | |
2948 | { | |
2949 | const Powerpc_relobj<size, big_endian>* object | |
2950 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
2951 | Address off = object->get_output_section_offset((*p)->shndx()); | |
2952 | gold_assert(off != invalid_address); | |
2953 | Output_section* os = (*p)->output_section(); | |
2954 | (*p)->set_address_and_size(os, off); | |
2955 | } | |
2956 | ||
9e69ed50 AM |
2957 | if (pass != 1) |
2958 | { | |
2959 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
2960 | prev_brlt_size = this->branch_lookup_table_.size(); | |
2961 | this->branch_lookup_table_.clear(); | |
2962 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2963 | p != this->stub_tables_.end(); | |
2964 | ++p) | |
2965 | { | |
a3e60ddb | 2966 | (*p)->clear_stubs(false); |
9e69ed50 AM |
2967 | } |
2968 | } | |
2969 | ||
2970 | // Build all the stubs. | |
a3e60ddb | 2971 | this->relax_failed_ = false; |
ec661b9d AM |
2972 | Stub_table<size, big_endian>* ifunc_stub_table |
2973 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
2974 | Stub_table<size, big_endian>* one_stub_table | |
2975 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
2976 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
2977 | b != this->branch_info_.end(); | |
2978 | b++) | |
2979 | { | |
a3e60ddb AM |
2980 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
2981 | && !this->relax_failed_) | |
2982 | { | |
2983 | this->relax_failed_ = true; | |
2984 | this->relax_fail_count_++; | |
2985 | if (this->relax_fail_count_ < 3) | |
2986 | return true; | |
2987 | } | |
ec661b9d AM |
2988 | } |
2989 | ||
9e69ed50 | 2990 | // Did anything change size? |
ec661b9d AM |
2991 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
2992 | bool again = num_huge_branches != prev_brlt_size; | |
2993 | if (size == 64 && num_huge_branches != 0) | |
2994 | this->make_brlt_section(layout); | |
2995 | if (size == 64 && again) | |
2996 | this->brlt_section_->set_current_size(num_huge_branches); | |
2997 | ||
2998 | typedef Unordered_set<Output_section*> Output_sections; | |
2999 | Output_sections os_need_update; | |
3000 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
3001 | p != this->stub_tables_.end(); | |
3002 | ++p) | |
3003 | { | |
3004 | if ((*p)->size_update()) | |
3005 | { | |
3006 | again = true; | |
9d5781f8 | 3007 | (*p)->add_eh_frame(layout); |
ec661b9d AM |
3008 | os_need_update.insert((*p)->output_section()); |
3009 | } | |
3010 | } | |
3011 | ||
9e69ed50 AM |
3012 | // Set output section offsets for all input sections in an output |
3013 | // section that just changed size. Anything past the stubs will | |
3014 | // need updating. | |
ec661b9d AM |
3015 | for (typename Output_sections::iterator p = os_need_update.begin(); |
3016 | p != os_need_update.end(); | |
3017 | p++) | |
3018 | { | |
3019 | Output_section* os = *p; | |
3020 | Address off = 0; | |
3021 | typedef Output_section::Input_section_list Input_section_list; | |
3022 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
3023 | i != os->input_sections().end(); | |
3024 | ++i) | |
3025 | { | |
3026 | off = align_address(off, i->addralign()); | |
3027 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
3028 | i->relobj()->set_section_offset(i->shndx(), off); | |
3029 | if (i->is_relaxed_input_section()) | |
3030 | { | |
3031 | Stub_table<size, big_endian>* stub_table | |
3032 | = static_cast<Stub_table<size, big_endian>*>( | |
3033 | i->relaxed_input_section()); | |
6395d38b HS |
3034 | Address stub_table_size = stub_table->set_address_and_size(os, off); |
3035 | off += stub_table_size; | |
3036 | // After a few iterations, set current stub table size | |
3037 | // as min size threshold, so later stub tables can only | |
3038 | // grow in size. | |
3039 | if (pass >= 4) | |
3040 | stub_table->set_min_size_threshold(stub_table_size); | |
ec661b9d AM |
3041 | } |
3042 | else | |
3043 | off += i->data_size(); | |
3044 | } | |
6830ee24 AM |
3045 | // If .branch_lt is part of this output section, then we have |
3046 | // just done the offset adjustment. | |
ec661b9d AM |
3047 | os->clear_section_offsets_need_adjustment(); |
3048 | } | |
3049 | ||
3050 | if (size == 64 | |
3051 | && !again | |
3052 | && num_huge_branches != 0 | |
3053 | && parameters->options().output_is_position_independent()) | |
3054 | { | |
3055 | // Fill in the BRLT relocs. | |
06f30c9d | 3056 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
3057 | for (typename Branch_lookup_table::const_iterator p |
3058 | = this->branch_lookup_table_.begin(); | |
3059 | p != this->branch_lookup_table_.end(); | |
3060 | ++p) | |
3061 | { | |
3062 | this->brlt_section_->add_reloc(p->first, p->second); | |
3063 | } | |
06f30c9d | 3064 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d AM |
3065 | } |
3066 | return again; | |
3067 | } | |
3068 | ||
9d5781f8 AM |
3069 | template<int size, bool big_endian> |
3070 | void | |
3071 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
3072 | unsigned char* oview, | |
3073 | uint64_t* paddress, | |
3074 | off_t* plen) const | |
3075 | { | |
3076 | uint64_t address = plt->address(); | |
3077 | off_t len = plt->data_size(); | |
3078 | ||
3079 | if (plt == this->glink_) | |
3080 | { | |
3081 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
3082 | if (len == 0) |
3083 | { | |
3084 | gold_assert(parameters->doing_static_link()); | |
3085 | // Static linking may need stubs, to support ifunc and long | |
3086 | // branches. We need to create an output section for | |
3087 | // .eh_frame early in the link process, to have a place to | |
3088 | // attach stub .eh_frame info. We also need to have | |
3089 | // registered a CIE that matches the stub CIE. Both of | |
3090 | // these requirements are satisfied by creating an FDE and | |
3091 | // CIE for .glink, even though static linking will leave | |
3092 | // .glink zero length. | |
3093 | // ??? Hopefully generating an FDE with a zero address range | |
3094 | // won't confuse anything that consumes .eh_frame info. | |
3095 | } | |
3096 | else if (size == 64) | |
9d5781f8 AM |
3097 | { |
3098 | // There is one word before __glink_PLTresolve | |
3099 | address += 8; | |
3100 | len -= 8; | |
3101 | } | |
3102 | else if (parameters->options().output_is_position_independent()) | |
3103 | { | |
3104 | // There are two FDEs for a position independent glink. | |
3105 | // The first covers the branch table, the second | |
3106 | // __glink_PLTresolve at the end of glink. | |
3107 | off_t resolve_size = this->glink_->pltresolve_size; | |
5fe7ffdc | 3108 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3109 | len -= resolve_size; |
3110 | else | |
3111 | { | |
3112 | address += len - resolve_size; | |
3113 | len = resolve_size; | |
3114 | } | |
3115 | } | |
3116 | } | |
3117 | else | |
3118 | { | |
3119 | // Must be a stub table. | |
3120 | const Stub_table<size, big_endian>* stub_table | |
3121 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3122 | uint64_t stub_address = stub_table->stub_address(); | |
3123 | len -= stub_address - address; | |
3124 | address = stub_address; | |
3125 | } | |
3126 | ||
3127 | *paddress = address; | |
3128 | *plen = len; | |
3129 | } | |
3130 | ||
42cacb20 DE |
3131 | // A class to handle the PLT data. |
3132 | ||
3133 | template<int size, bool big_endian> | |
cf43a2fe | 3134 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3135 | { |
3136 | public: | |
3137 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3138 | size, big_endian> Reloc_section; | |
3139 | ||
e5d5f5ed AM |
3140 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3141 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3142 | const char* name) |
3143 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3144 | rel_(plt_rel), | |
3145 | targ_(targ), | |
e5d5f5ed AM |
3146 | name_(name) |
3147 | { } | |
42cacb20 DE |
3148 | |
3149 | // Add an entry to the PLT. | |
03e25981 | 3150 | void |
cf43a2fe | 3151 | add_entry(Symbol*); |
42cacb20 | 3152 | |
03e25981 | 3153 | void |
e5d5f5ed AM |
3154 | add_ifunc_entry(Symbol*); |
3155 | ||
03e25981 | 3156 | void |
e5d5f5ed AM |
3157 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3158 | ||
42cacb20 | 3159 | // Return the .rela.plt section data. |
e5d5f5ed | 3160 | Reloc_section* |
cf43a2fe AM |
3161 | rel_plt() const |
3162 | { | |
42cacb20 DE |
3163 | return this->rel_; |
3164 | } | |
3165 | ||
0e70b911 CC |
3166 | // Return the number of PLT entries. |
3167 | unsigned int | |
3168 | entry_count() const | |
d83ce4e3 | 3169 | { |
b3ccdeb5 AM |
3170 | if (this->current_data_size() == 0) |
3171 | return 0; | |
b4f7960d AM |
3172 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3173 | / this->plt_entry_size()); | |
d83ce4e3 | 3174 | } |
0e70b911 | 3175 | |
42cacb20 | 3176 | protected: |
42cacb20 | 3177 | void |
cf43a2fe | 3178 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3179 | { |
cf43a2fe | 3180 | os->set_entsize(0); |
42cacb20 DE |
3181 | } |
3182 | ||
6ce78956 AM |
3183 | // Write to a map file. |
3184 | void | |
3185 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3186 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3187 | |
cf43a2fe | 3188 | private: |
b4f7960d AM |
3189 | // Return the offset of the first non-reserved PLT entry. |
3190 | unsigned int | |
3191 | first_plt_entry_offset() const | |
3192 | { | |
3193 | // IPLT has no reserved entry. | |
3194 | if (this->name_[3] == 'I') | |
3195 | return 0; | |
3196 | return this->targ_->first_plt_entry_offset(); | |
3197 | } | |
3198 | ||
3199 | // Return the size of each PLT entry. | |
3200 | unsigned int | |
3201 | plt_entry_size() const | |
3202 | { | |
3203 | return this->targ_->plt_entry_size(); | |
3204 | } | |
cf43a2fe | 3205 | |
42cacb20 DE |
3206 | // Write out the PLT data. |
3207 | void | |
3208 | do_write(Output_file*); | |
3209 | ||
3210 | // The reloc section. | |
3211 | Reloc_section* rel_; | |
cf43a2fe AM |
3212 | // Allows access to .glink for do_write. |
3213 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3214 | // What to report in map file. |
3215 | const char *name_; | |
42cacb20 DE |
3216 | }; |
3217 | ||
e5d5f5ed | 3218 | // Add an entry to the PLT. |
42cacb20 DE |
3219 | |
3220 | template<int size, bool big_endian> | |
03e25981 | 3221 | void |
e5d5f5ed | 3222 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3223 | { |
e5d5f5ed AM |
3224 | if (!gsym->has_plt_offset()) |
3225 | { | |
ec661b9d | 3226 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3227 | if (off == 0) |
3228 | off += this->first_plt_entry_offset(); | |
3229 | gsym->set_plt_offset(off); | |
3230 | gsym->set_needs_dynsym_entry(); | |
3231 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3232 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3233 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3234 | this->set_current_data_size(off); |
3235 | } | |
42cacb20 DE |
3236 | } |
3237 | ||
e5d5f5ed | 3238 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3239 | |
3240 | template<int size, bool big_endian> | |
03e25981 | 3241 | void |
e5d5f5ed | 3242 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3243 | { |
cf43a2fe AM |
3244 | if (!gsym->has_plt_offset()) |
3245 | { | |
ec661b9d | 3246 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3247 | gsym->set_plt_offset(off); |
e5d5f5ed | 3248 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3249 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3250 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3251 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3252 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3253 | this->set_current_data_size(off); |
3254 | } | |
3255 | } | |
3256 | ||
3257 | // Add an entry for a local ifunc symbol to the IPLT. | |
3258 | ||
3259 | template<int size, bool big_endian> | |
03e25981 | 3260 | void |
e5d5f5ed AM |
3261 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3262 | Sized_relobj_file<size, big_endian>* relobj, | |
3263 | unsigned int local_sym_index) | |
3264 | { | |
3265 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3266 | { | |
ec661b9d | 3267 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3268 | relobj->set_local_plt_offset(local_sym_index, off); |
3269 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3270 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3271 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3272 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3273 | this, off, 0); | |
b4f7960d | 3274 | off += this->plt_entry_size(); |
cf43a2fe AM |
3275 | this->set_current_data_size(off); |
3276 | } | |
42cacb20 DE |
3277 | } |
3278 | ||
dd93cd0a | 3279 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3280 | static const uint32_t add_2_2_11 = 0x7c425a14; |
549dba71 | 3281 | static const uint32_t add_2_2_12 = 0x7c426214; |
dd93cd0a AM |
3282 | static const uint32_t add_3_3_2 = 0x7c631214; |
3283 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
3284 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
b4f7960d AM |
3285 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3286 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3287 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3288 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3289 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3290 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3291 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3292 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3293 | static const uint32_t addis_0_2 = 0x3c020000; |
3294 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3295 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3296 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3297 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3298 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3299 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3300 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3301 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3302 | static const uint32_t b = 0x48000000; |
3303 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3304 | static const uint32_t bctr = 0x4e800420; | |
f3a0ed29 | 3305 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3306 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3307 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3308 | static const uint32_t cmpldi_2_0 = 0x28220000; |
dd93cd0a AM |
3309 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3310 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
3311 | static const uint32_t ld_0_1 = 0xe8010000; |
3312 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3313 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3314 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d | 3315 | static const uint32_t ld_2_11 = 0xe84b0000; |
549dba71 | 3316 | static const uint32_t ld_2_12 = 0xe84c0000; |
b4f7960d AM |
3317 | static const uint32_t ld_11_2 = 0xe9620000; |
3318 | static const uint32_t ld_11_11 = 0xe96b0000; | |
3319 | static const uint32_t ld_12_2 = 0xe9820000; | |
3320 | static const uint32_t ld_12_11 = 0xe98b0000; | |
9055360d | 3321 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3322 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3323 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3324 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3325 | static const uint32_t lis_0 = 0x3c000000; |
549dba71 | 3326 | static const uint32_t lis_2 = 0x3c400000; |
c9269dff AM |
3327 | static const uint32_t lis_11 = 0x3d600000; |
3328 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3329 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff AM |
3330 | static const uint32_t lwz_0_12 = 0x800c0000; |
3331 | static const uint32_t lwz_11_11 = 0x816b0000; | |
3332 | static const uint32_t lwz_11_30 = 0x817e0000; | |
3333 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 3334 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3335 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3336 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
3337 | static const uint32_t mflr_12 = 0x7d8802a6; |
3338 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
3339 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3340 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3341 | static const uint32_t mtlr_0 = 0x7c0803a6; |
c9269dff | 3342 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3343 | static const uint32_t nop = 0x60000000; |
c9269dff | 3344 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3345 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3346 | static const uint32_t std_0_1 = 0xf8010000; |
3347 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3348 | static const uint32_t std_2_1 = 0xf8410000; |
f3a0ed29 AM |
3349 | static const uint32_t stfd_0_1 = 0xd8010000; |
3350 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3351 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3352 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3353 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3354 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3355 | |
3356 | // Write out the PLT. | |
3357 | ||
3358 | template<int size, bool big_endian> | |
3359 | void | |
3360 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3361 | { | |
b3ccdeb5 | 3362 | if (size == 32 && this->name_[3] != 'I') |
cf43a2fe | 3363 | { |
ec661b9d | 3364 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3365 | const section_size_type oview_size |
3366 | = convert_to_section_size_type(this->data_size()); | |
3367 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3368 | unsigned char* pov = oview; | |
3369 | unsigned char* endpov = oview + oview_size; | |
3370 | ||
e5d5f5ed | 3371 | // The address of the .glink branch table |
cf43a2fe AM |
3372 | const Output_data_glink<size, big_endian>* glink |
3373 | = this->targ_->glink_section(); | |
ec661b9d | 3374 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3375 | |
3376 | while (pov < endpov) | |
3377 | { | |
3378 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3379 | pov += 4; | |
3380 | branch_tab += 4; | |
3381 | } | |
3382 | ||
3383 | of->write_output_view(offset, oview_size, oview); | |
3384 | } | |
3385 | } | |
3386 | ||
3387 | // Create the PLT section. | |
3388 | ||
3389 | template<int size, bool big_endian> | |
3390 | void | |
40b469d7 AM |
3391 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
3392 | Layout* layout) | |
cf43a2fe AM |
3393 | { |
3394 | if (this->plt_ == NULL) | |
3395 | { | |
40b469d7 AM |
3396 | if (this->got_ == NULL) |
3397 | this->got_section(symtab, layout); | |
3398 | ||
cf43a2fe AM |
3399 | if (this->glink_ == NULL) |
3400 | make_glink_section(layout); | |
3401 | ||
3402 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
3403 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 3404 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
3405 | this->rela_dyn_section(layout); |
3406 | ||
e5d5f5ed AM |
3407 | Reloc_section* plt_rel = new Reloc_section(false); |
3408 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
3409 | elfcpp::SHF_ALLOC, plt_rel, | |
3410 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
3411 | this->plt_ | |
3412 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 3413 | "** PLT"); |
cf43a2fe AM |
3414 | layout->add_output_section_data(".plt", |
3415 | (size == 32 | |
3416 | ? elfcpp::SHT_PROGBITS | |
3417 | : elfcpp::SHT_NOBITS), | |
3418 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3419 | this->plt_, | |
3420 | (size == 32 | |
3421 | ? ORDER_SMALL_DATA | |
3422 | : ORDER_SMALL_BSS), | |
3423 | false); | |
3424 | } | |
3425 | } | |
3426 | ||
e5d5f5ed AM |
3427 | // Create the IPLT section. |
3428 | ||
3429 | template<int size, bool big_endian> | |
3430 | void | |
40b469d7 AM |
3431 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
3432 | Layout* layout) | |
e5d5f5ed AM |
3433 | { |
3434 | if (this->iplt_ == NULL) | |
3435 | { | |
40b469d7 | 3436 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
3437 | |
3438 | Reloc_section* iplt_rel = new Reloc_section(false); | |
3439 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
3440 | this->iplt_ | |
3441 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 3442 | "** IPLT"); |
e5d5f5ed | 3443 | this->plt_->output_section()->add_output_section_data(this->iplt_); |
e5d5f5ed AM |
3444 | } |
3445 | } | |
3446 | ||
ec661b9d | 3447 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
3448 | |
3449 | template<int size, bool big_endian> | |
ec661b9d | 3450 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
3451 | { |
3452 | public: | |
ec661b9d AM |
3453 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
3454 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3455 | size, big_endian> Reloc_section; | |
c9269dff | 3456 | |
ec661b9d AM |
3457 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
3458 | Reloc_section* brlt_rel) | |
3459 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3460 | rel_(brlt_rel), | |
3461 | targ_(targ) | |
3462 | { } | |
cf43a2fe | 3463 | |
06f30c9d CC |
3464 | void |
3465 | reset_brlt_sizes() | |
3466 | { | |
3467 | this->reset_data_size(); | |
3468 | this->rel_->reset_data_size(); | |
3469 | } | |
3470 | ||
3471 | void | |
3472 | finalize_brlt_sizes() | |
3473 | { | |
3474 | this->finalize_data_size(); | |
3475 | this->rel_->finalize_data_size(); | |
3476 | } | |
3477 | ||
ec661b9d | 3478 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 3479 | void |
ec661b9d AM |
3480 | add_reloc(Address to, unsigned int off) |
3481 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 3482 | |
ec661b9d | 3483 | // Update section and reloc section size. |
e5d5f5ed | 3484 | void |
ec661b9d AM |
3485 | set_current_size(unsigned int num_branches) |
3486 | { | |
3487 | this->reset_address_and_file_offset(); | |
3488 | this->set_current_data_size(num_branches * 16); | |
3489 | this->finalize_data_size(); | |
3490 | Output_section* os = this->output_section(); | |
3491 | os->set_section_offsets_need_adjustment(); | |
3492 | if (this->rel_ != NULL) | |
3493 | { | |
0e123f69 | 3494 | const unsigned int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
ec661b9d AM |
3495 | this->rel_->reset_address_and_file_offset(); |
3496 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
3497 | this->rel_->finalize_data_size(); | |
3498 | Output_section* os = this->rel_->output_section(); | |
3499 | os->set_section_offsets_need_adjustment(); | |
3500 | } | |
3501 | } | |
cf43a2fe | 3502 | |
ec661b9d AM |
3503 | protected: |
3504 | void | |
3505 | do_adjust_output_section(Output_section* os) | |
3506 | { | |
3507 | os->set_entsize(0); | |
3508 | } | |
e5d5f5ed | 3509 | |
ec661b9d AM |
3510 | // Write to a map file. |
3511 | void | |
3512 | do_print_to_mapfile(Mapfile* mapfile) const | |
3513 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 3514 | |
ec661b9d AM |
3515 | private: |
3516 | // Write out the BRLT data. | |
3517 | void | |
3518 | do_write(Output_file*); | |
c9824451 | 3519 | |
ec661b9d AM |
3520 | // The reloc section. |
3521 | Reloc_section* rel_; | |
3522 | Target_powerpc<size, big_endian>* targ_; | |
3523 | }; | |
cf43a2fe | 3524 | |
ec661b9d AM |
3525 | // Make the branch lookup table section. |
3526 | ||
3527 | template<int size, bool big_endian> | |
3528 | void | |
3529 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
3530 | { | |
3531 | if (size == 64 && this->brlt_section_ == NULL) | |
3532 | { | |
3533 | Reloc_section* brlt_rel = NULL; | |
3534 | bool is_pic = parameters->options().output_is_position_independent(); | |
3535 | if (is_pic) | |
3536 | { | |
6830ee24 AM |
3537 | // When PIC we can't fill in .branch_lt (like .plt it can be |
3538 | // a bss style section) but must initialise at runtime via | |
ec661b9d AM |
3539 | // dynamic relocats. |
3540 | this->rela_dyn_section(layout); | |
3541 | brlt_rel = new Reloc_section(false); | |
3542 | this->rela_dyn_->output_section()->add_output_section_data(brlt_rel); | |
3543 | } | |
3544 | this->brlt_section_ | |
3545 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
3546 | if (this->plt_ && is_pic) | |
3547 | this->plt_->output_section() | |
3548 | ->add_output_section_data(this->brlt_section_); | |
3549 | else | |
6830ee24 | 3550 | layout->add_output_section_data(".branch_lt", |
ec661b9d AM |
3551 | (is_pic ? elfcpp::SHT_NOBITS |
3552 | : elfcpp::SHT_PROGBITS), | |
3553 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3554 | this->brlt_section_, | |
3555 | (is_pic ? ORDER_SMALL_BSS | |
3556 | : ORDER_SMALL_DATA), | |
3557 | false); | |
3558 | } | |
3559 | } | |
3560 | ||
6830ee24 | 3561 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
3562 | |
3563 | template<int size, bool big_endian> | |
3564 | void | |
3565 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3566 | { | |
3567 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
3568 | { | |
3569 | const section_size_type offset = this->offset(); | |
3570 | const section_size_type oview_size | |
3571 | = convert_to_section_size_type(this->data_size()); | |
3572 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3573 | ||
3574 | this->targ_->write_branch_lookup_table(oview); | |
3575 | of->write_output_view(offset, oview_size, oview); | |
3576 | } | |
3577 | } | |
3578 | ||
9e69ed50 AM |
3579 | static inline uint32_t |
3580 | l(uint32_t a) | |
3581 | { | |
3582 | return a & 0xffff; | |
3583 | } | |
3584 | ||
3585 | static inline uint32_t | |
3586 | hi(uint32_t a) | |
3587 | { | |
3588 | return l(a >> 16); | |
3589 | } | |
3590 | ||
3591 | static inline uint32_t | |
3592 | ha(uint32_t a) | |
3593 | { | |
3594 | return hi(a + 0x8000); | |
3595 | } | |
3596 | ||
9d5781f8 AM |
3597 | template<int size> |
3598 | struct Eh_cie | |
3599 | { | |
3600 | static const unsigned char eh_frame_cie[12]; | |
3601 | }; | |
3602 | ||
3603 | template<int size> | |
3604 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
3605 | { | |
3606 | 1, // CIE version. | |
3607 | 'z', 'R', 0, // Augmentation string. | |
3608 | 4, // Code alignment. | |
3609 | 0x80 - size / 8 , // Data alignment. | |
3610 | 65, // RA reg. | |
3611 | 1, // Augmentation size. | |
3612 | (elfcpp::DW_EH_PE_pcrel | |
3613 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
3614 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
3615 | }; | |
3616 | ||
b4f7960d AM |
3617 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
3618 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
3619 | { |
3620 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3621 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3622 | 0, // Augmentation size. | |
3623 | elfcpp::DW_CFA_advance_loc + 1, | |
3624 | elfcpp::DW_CFA_register, 65, 12, | |
3625 | elfcpp::DW_CFA_advance_loc + 4, | |
3626 | elfcpp::DW_CFA_restore_extended, 65 | |
3627 | }; | |
3628 | ||
b4f7960d AM |
3629 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
3630 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
3631 | { | |
3632 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3633 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3634 | 0, // Augmentation size. | |
3635 | elfcpp::DW_CFA_advance_loc + 1, | |
3636 | elfcpp::DW_CFA_register, 65, 0, | |
3637 | elfcpp::DW_CFA_advance_loc + 4, | |
3638 | elfcpp::DW_CFA_restore_extended, 65 | |
3639 | }; | |
3640 | ||
9d5781f8 AM |
3641 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
3642 | static const unsigned char glink_eh_frame_fde_32[] = | |
3643 | { | |
3644 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3645 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3646 | 0, // Augmentation size. | |
3647 | elfcpp::DW_CFA_advance_loc + 2, | |
3648 | elfcpp::DW_CFA_register, 65, 0, | |
3649 | elfcpp::DW_CFA_advance_loc + 4, | |
3650 | elfcpp::DW_CFA_restore_extended, 65 | |
3651 | }; | |
3652 | ||
3653 | static const unsigned char default_fde[] = | |
3654 | { | |
3655 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
3656 | 0, 0, 0, 0, // Replaced with size of stubs. | |
3657 | 0, // Augmentation size. | |
3658 | elfcpp::DW_CFA_nop, // Pad. | |
3659 | elfcpp::DW_CFA_nop, | |
3660 | elfcpp::DW_CFA_nop | |
3661 | }; | |
3662 | ||
9e69ed50 AM |
3663 | template<bool big_endian> |
3664 | static inline void | |
3665 | write_insn(unsigned char* p, uint32_t v) | |
3666 | { | |
3667 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
3668 | } | |
3669 | ||
ec661b9d AM |
3670 | // Stub_table holds information about plt and long branch stubs. |
3671 | // Stubs are built in an area following some input section determined | |
3672 | // by group_sections(). This input section is converted to a relaxed | |
3673 | // input section allowing it to be resized to accommodate the stubs | |
3674 | ||
3675 | template<int size, bool big_endian> | |
3676 | class Stub_table : public Output_relaxed_input_section | |
3677 | { | |
3678 | public: | |
3679 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
3680 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
3681 | ||
a3e60ddb AM |
3682 | Stub_table(Target_powerpc<size, big_endian>* targ, |
3683 | Output_section* output_section, | |
3684 | const Output_section::Input_section* owner) | |
3685 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), | |
3686 | owner->relobj() | |
3687 | ->section_addralign(owner->shndx())), | |
ec661b9d | 3688 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
3689 | orig_data_size_(owner->current_data_size()), |
3690 | plt_size_(0), last_plt_size_(0), | |
6395d38b HS |
3691 | branch_size_(0), last_branch_size_(0), min_size_threshold_(0), |
3692 | eh_frame_added_(false), need_save_res_(false) | |
a3e60ddb AM |
3693 | { |
3694 | this->set_output_section(output_section); | |
ec661b9d | 3695 | |
a3e60ddb AM |
3696 | std::vector<Output_relaxed_input_section*> new_relaxed; |
3697 | new_relaxed.push_back(this); | |
3698 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
3699 | } | |
ec661b9d AM |
3700 | |
3701 | // Add a plt call stub. | |
a3e60ddb AM |
3702 | bool |
3703 | add_plt_call_entry(Address, | |
3704 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3705 | const Symbol*, |
3706 | unsigned int, | |
3707 | Address); | |
3708 | ||
a3e60ddb AM |
3709 | bool |
3710 | add_plt_call_entry(Address, | |
3711 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3712 | unsigned int, |
3713 | unsigned int, | |
3714 | Address); | |
3715 | ||
3716 | // Find a given plt call stub. | |
3717 | Address | |
3718 | find_plt_call_entry(const Symbol*) const; | |
3719 | ||
3720 | Address | |
3721 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3722 | unsigned int) const; | |
3723 | ||
3724 | Address | |
3725 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3726 | const Symbol*, | |
3727 | unsigned int, | |
3728 | Address) const; | |
3729 | ||
3730 | Address | |
3731 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3732 | unsigned int, | |
3733 | unsigned int, | |
3734 | Address) const; | |
3735 | ||
3736 | // Add a long branch stub. | |
a3e60ddb AM |
3737 | bool |
3738 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 3739 | unsigned int, Address, Address, bool); |
ec661b9d AM |
3740 | |
3741 | Address | |
9d5781f8 AM |
3742 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
3743 | Address) const; | |
ec661b9d | 3744 | |
a3e60ddb AM |
3745 | bool |
3746 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
3747 | { | |
cbcb23fa | 3748 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
3749 | if (max_branch_offset == 0) |
3750 | return true; | |
3751 | gold_assert(from != invalid_address); | |
3752 | Address loc = off + this->stub_address(); | |
3753 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
3754 | } | |
3755 | ||
ec661b9d | 3756 | void |
a3e60ddb | 3757 | clear_stubs(bool all) |
cf43a2fe | 3758 | { |
9e69ed50 AM |
3759 | this->plt_call_stubs_.clear(); |
3760 | this->plt_size_ = 0; | |
ec661b9d AM |
3761 | this->long_branch_stubs_.clear(); |
3762 | this->branch_size_ = 0; | |
d49044c7 | 3763 | this->need_save_res_ = false; |
a3e60ddb AM |
3764 | if (all) |
3765 | { | |
3766 | this->last_plt_size_ = 0; | |
3767 | this->last_branch_size_ = 0; | |
3768 | } | |
cf43a2fe AM |
3769 | } |
3770 | ||
ec661b9d AM |
3771 | Address |
3772 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 3773 | { |
ec661b9d AM |
3774 | Address start_off = off; |
3775 | off += this->orig_data_size_; | |
3776 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
3777 | if (this->need_save_res_) |
3778 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
3779 | if (my_size != 0) |
3780 | off = align_address(off, this->stub_align()); | |
3781 | // Include original section size and alignment padding in size | |
3782 | my_size += off - start_off; | |
6395d38b HS |
3783 | // Ensure new size is always larger than min size |
3784 | // threshold. Alignment requirement is included in "my_size", so | |
3785 | // increase "my_size" does not invalidate alignment. | |
3786 | if (my_size < this->min_size_threshold_) | |
3787 | my_size = this->min_size_threshold_; | |
ec661b9d AM |
3788 | this->reset_address_and_file_offset(); |
3789 | this->set_current_data_size(my_size); | |
3790 | this->set_address_and_file_offset(os->address() + start_off, | |
3791 | os->offset() + start_off); | |
3792 | return my_size; | |
cf43a2fe AM |
3793 | } |
3794 | ||
ec661b9d | 3795 | Address |
9d5781f8 | 3796 | stub_address() const |
ec661b9d AM |
3797 | { |
3798 | return align_address(this->address() + this->orig_data_size_, | |
3799 | this->stub_align()); | |
3800 | } | |
3801 | ||
3802 | Address | |
9d5781f8 | 3803 | stub_offset() const |
ec661b9d AM |
3804 | { |
3805 | return align_address(this->offset() + this->orig_data_size_, | |
3806 | this->stub_align()); | |
3807 | } | |
3808 | ||
3809 | section_size_type | |
3810 | plt_size() const | |
3811 | { return this->plt_size_; } | |
3812 | ||
6395d38b HS |
3813 | void set_min_size_threshold(Address min_size) |
3814 | { this->min_size_threshold_ = min_size; } | |
3815 | ||
ec661b9d AM |
3816 | bool |
3817 | size_update() | |
3818 | { | |
3819 | Output_section* os = this->output_section(); | |
3820 | if (os->addralign() < this->stub_align()) | |
3821 | { | |
3822 | os->set_addralign(this->stub_align()); | |
3823 | // FIXME: get rid of the insane checkpointing. | |
3824 | // We can't increase alignment of the input section to which | |
3825 | // stubs are attached; The input section may be .init which | |
3826 | // is pasted together with other .init sections to form a | |
3827 | // function. Aligning might insert zero padding resulting in | |
3828 | // sigill. However we do need to increase alignment of the | |
3829 | // output section so that the align_address() on offset in | |
3830 | // set_address_and_size() adds the same padding as the | |
3831 | // align_address() on address in stub_address(). | |
3832 | // What's more, we need this alignment for the layout done in | |
3833 | // relaxation_loop_body() so that the output section starts at | |
3834 | // a suitably aligned address. | |
3835 | os->checkpoint_set_addralign(this->stub_align()); | |
3836 | } | |
9e69ed50 AM |
3837 | if (this->last_plt_size_ != this->plt_size_ |
3838 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 3839 | { |
9e69ed50 AM |
3840 | this->last_plt_size_ = this->plt_size_; |
3841 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
3842 | return true; |
3843 | } | |
3844 | return false; | |
3845 | } | |
3846 | ||
9d5781f8 AM |
3847 | // Add .eh_frame info for this stub section. Unlike other linker |
3848 | // generated .eh_frame this is added late in the link, because we | |
3849 | // only want the .eh_frame info if this particular stub section is | |
3850 | // non-empty. | |
3851 | void | |
3852 | add_eh_frame(Layout* layout) | |
3853 | { | |
3854 | if (!this->eh_frame_added_) | |
3855 | { | |
3856 | if (!parameters->options().ld_generated_unwind_info()) | |
3857 | return; | |
3858 | ||
3859 | // Since we add stub .eh_frame info late, it must be placed | |
3860 | // after all other linker generated .eh_frame info so that | |
3861 | // merge mapping need not be updated for input sections. | |
3862 | // There is no provision to use a different CIE to that used | |
3863 | // by .glink. | |
3864 | if (!this->targ_->has_glink()) | |
3865 | return; | |
3866 | ||
3867 | layout->add_eh_frame_for_plt(this, | |
3868 | Eh_cie<size>::eh_frame_cie, | |
3869 | sizeof (Eh_cie<size>::eh_frame_cie), | |
3870 | default_fde, | |
3871 | sizeof (default_fde)); | |
3872 | this->eh_frame_added_ = true; | |
3873 | } | |
3874 | } | |
3875 | ||
ec661b9d AM |
3876 | Target_powerpc<size, big_endian>* |
3877 | targ() const | |
3878 | { return targ_; } | |
6ce78956 | 3879 | |
cf43a2fe | 3880 | private: |
9e69ed50 AM |
3881 | class Plt_stub_ent; |
3882 | class Plt_stub_ent_hash; | |
3883 | typedef Unordered_map<Plt_stub_ent, unsigned int, | |
3884 | Plt_stub_ent_hash> Plt_stub_entries; | |
3885 | ||
3886 | // Alignment of stub section. | |
ec661b9d | 3887 | unsigned int |
9e69ed50 AM |
3888 | stub_align() const |
3889 | { | |
3890 | if (size == 32) | |
3891 | return 16; | |
3892 | unsigned int min_align = 32; | |
3893 | unsigned int user_align = 1 << parameters->options().plt_align(); | |
3894 | return std::max(user_align, min_align); | |
3895 | } | |
cf43a2fe | 3896 | |
91c2b899 AM |
3897 | // Return the plt offset for the given call stub. |
3898 | Address | |
3899 | plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const | |
3900 | { | |
3901 | const Symbol* gsym = p->first.sym_; | |
3902 | if (gsym != NULL) | |
3903 | { | |
3904 | *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
3905 | && gsym->can_use_relative_reloc(false)); | |
3906 | return gsym->plt_offset(); | |
3907 | } | |
3908 | else | |
3909 | { | |
3910 | *is_iplt = true; | |
3911 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; | |
3912 | unsigned int local_sym_index = p->first.locsym_; | |
3913 | return relobj->local_plt_offset(local_sym_index); | |
3914 | } | |
3915 | } | |
3916 | ||
9e69ed50 | 3917 | // Size of a given plt call stub. |
ec661b9d | 3918 | unsigned int |
9e69ed50 AM |
3919 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
3920 | { | |
3921 | if (size == 32) | |
3922 | return 16; | |
3923 | ||
91c2b899 AM |
3924 | bool is_iplt; |
3925 | Address plt_addr = this->plt_off(p, &is_iplt); | |
3926 | if (is_iplt) | |
3927 | plt_addr += this->targ_->iplt_section()->address(); | |
9e69ed50 | 3928 | else |
91c2b899 AM |
3929 | plt_addr += this->targ_->plt_section()->address(); |
3930 | Address got_addr = this->targ_->got_section()->output_section()->address(); | |
9e69ed50 AM |
3931 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
3932 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
3933 | got_addr += ppcobj->toc_base_offset(); |
3934 | Address off = plt_addr - got_addr; | |
b4f7960d AM |
3935 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
3936 | if (this->targ_->abiversion() < 2) | |
3937 | { | |
3938 | bool static_chain = parameters->options().plt_static_chain(); | |
3939 | bool thread_safe = this->targ_->plt_thread_safe(); | |
3940 | bytes += (4 | |
3941 | + 4 * static_chain | |
3942 | + 8 * thread_safe | |
3943 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
3944 | } | |
9e69ed50 AM |
3945 | unsigned int align = 1 << parameters->options().plt_align(); |
3946 | if (align > 1) | |
3947 | bytes = (bytes + align - 1) & -align; | |
3948 | return bytes; | |
3949 | } | |
ec661b9d AM |
3950 | |
3951 | // Return long branch stub size. | |
3952 | unsigned int | |
3953 | branch_stub_size(Address to) | |
3954 | { | |
9e69ed50 AM |
3955 | Address loc |
3956 | = this->stub_address() + this->last_plt_size_ + this->branch_size_; | |
3957 | if (to - loc + (1 << 25) < 2 << 25) | |
ec661b9d AM |
3958 | return 4; |
3959 | if (size == 64 || !parameters->options().output_is_position_independent()) | |
3960 | return 16; | |
3961 | return 32; | |
3962 | } | |
3963 | ||
3964 | // Write out stubs. | |
cf43a2fe AM |
3965 | void |
3966 | do_write(Output_file*); | |
3967 | ||
ec661b9d AM |
3968 | // Plt call stub keys. |
3969 | class Plt_stub_ent | |
cf43a2fe | 3970 | { |
d1a8cabd | 3971 | public: |
ec661b9d | 3972 | Plt_stub_ent(const Symbol* sym) |
c9824451 AM |
3973 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
3974 | { } | |
3975 | ||
ec661b9d AM |
3976 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3977 | unsigned int locsym_index) | |
c9824451 AM |
3978 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
3979 | { } | |
3980 | ||
ec661b9d AM |
3981 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3982 | const Symbol* sym, | |
3983 | unsigned int r_type, | |
3984 | Address addend) | |
e5d5f5ed | 3985 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
3986 | { |
3987 | if (size != 32) | |
ec661b9d | 3988 | this->addend_ = addend; |
d1a8cabd | 3989 | else if (parameters->options().output_is_position_independent() |
ec661b9d | 3990 | && r_type == elfcpp::R_PPC_PLTREL24) |
cf43a2fe | 3991 | { |
ec661b9d | 3992 | this->addend_ = addend; |
e5d5f5ed | 3993 | if (this->addend_ >= 32768) |
d1a8cabd | 3994 | this->object_ = object; |
cf43a2fe AM |
3995 | } |
3996 | } | |
3997 | ||
ec661b9d AM |
3998 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3999 | unsigned int locsym_index, | |
4000 | unsigned int r_type, | |
4001 | Address addend) | |
e5d5f5ed AM |
4002 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
4003 | { | |
4004 | if (size != 32) | |
ec661b9d | 4005 | this->addend_ = addend; |
e5d5f5ed | 4006 | else if (parameters->options().output_is_position_independent() |
ec661b9d AM |
4007 | && r_type == elfcpp::R_PPC_PLTREL24) |
4008 | this->addend_ = addend; | |
e5d5f5ed AM |
4009 | } |
4010 | ||
ec661b9d | 4011 | bool operator==(const Plt_stub_ent& that) const |
cf43a2fe AM |
4012 | { |
4013 | return (this->sym_ == that.sym_ | |
4014 | && this->object_ == that.object_ | |
e5d5f5ed AM |
4015 | && this->addend_ == that.addend_ |
4016 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 4017 | } |
c9269dff AM |
4018 | |
4019 | const Symbol* sym_; | |
e5d5f5ed AM |
4020 | const Sized_relobj_file<size, big_endian>* object_; |
4021 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
4022 | unsigned int locsym_; | |
cf43a2fe AM |
4023 | }; |
4024 | ||
ec661b9d | 4025 | class Plt_stub_ent_hash |
cf43a2fe | 4026 | { |
d1a8cabd | 4027 | public: |
ec661b9d | 4028 | size_t operator()(const Plt_stub_ent& ent) const |
cf43a2fe AM |
4029 | { |
4030 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
4031 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
4032 | ^ ent.addend_ |
4033 | ^ ent.locsym_); | |
cf43a2fe | 4034 | } |
ec661b9d AM |
4035 | }; |
4036 | ||
4037 | // Long branch stub keys. | |
4038 | class Branch_stub_ent | |
4039 | { | |
4040 | public: | |
d49044c7 AM |
4041 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, |
4042 | Address to, bool save_res) | |
4043 | : dest_(to), toc_base_off_(0), save_res_(save_res) | |
ec661b9d AM |
4044 | { |
4045 | if (size == 64) | |
4046 | toc_base_off_ = obj->toc_base_offset(); | |
4047 | } | |
4048 | ||
4049 | bool operator==(const Branch_stub_ent& that) const | |
4050 | { | |
4051 | return (this->dest_ == that.dest_ | |
4052 | && (size == 32 | |
4053 | || this->toc_base_off_ == that.toc_base_off_)); | |
4054 | } | |
cf43a2fe | 4055 | |
ec661b9d AM |
4056 | Address dest_; |
4057 | unsigned int toc_base_off_; | |
d49044c7 | 4058 | bool save_res_; |
ec661b9d | 4059 | }; |
cf43a2fe | 4060 | |
ec661b9d AM |
4061 | class Branch_stub_ent_hash |
4062 | { | |
4063 | public: | |
4064 | size_t operator()(const Branch_stub_ent& ent) const | |
4065 | { return ent.dest_ ^ ent.toc_base_off_; } | |
4066 | }; | |
cf43a2fe | 4067 | |
ec661b9d | 4068 | // In a sane world this would be a global. |
cf43a2fe | 4069 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 4070 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
4071 | Plt_stub_entries plt_call_stubs_; |
4072 | // Map destination address to stub offset. | |
4073 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
4074 | Branch_stub_ent_hash> Branch_stub_entries; | |
4075 | Branch_stub_entries long_branch_stubs_; | |
4076 | // size of input section | |
4077 | section_size_type orig_data_size_; | |
4078 | // size of stubs | |
9e69ed50 | 4079 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
6395d38b HS |
4080 | // Some rare cases cause (PR/20529) fluctuation in stub table |
4081 | // size, which leads to an endless relax loop. This is to be fixed | |
4082 | // by, after the first few iterations, allowing only increase of | |
4083 | // stub table size. This variable sets the minimal possible size of | |
4084 | // a stub table, it is zero for the first few iterations, then | |
4085 | // increases monotonically. | |
4086 | Address min_size_threshold_; | |
9d5781f8 AM |
4087 | // Whether .eh_frame info has been created for this stub section. |
4088 | bool eh_frame_added_; | |
d49044c7 AM |
4089 | // Set if this stub group needs a copy of out-of-line register |
4090 | // save/restore functions. | |
4091 | bool need_save_res_; | |
cf43a2fe AM |
4092 | }; |
4093 | ||
ec661b9d | 4094 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 4095 | // sym/object/addend combo. |
cf43a2fe AM |
4096 | |
4097 | template<int size, bool big_endian> | |
a3e60ddb | 4098 | bool |
ec661b9d | 4099 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4100 | Address from, |
c9824451 | 4101 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4102 | const Symbol* gsym, |
ec661b9d AM |
4103 | unsigned int r_type, |
4104 | Address addend) | |
cf43a2fe | 4105 | { |
ec661b9d | 4106 | Plt_stub_ent ent(object, gsym, r_type, addend); |
9055360d | 4107 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
4108 | std::pair<typename Plt_stub_entries::iterator, bool> p |
4109 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
4110 | if (p.second) | |
4111 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 4112 | return this->can_reach_stub(from, off, r_type); |
cf43a2fe AM |
4113 | } |
4114 | ||
e5d5f5ed | 4115 | template<int size, bool big_endian> |
a3e60ddb | 4116 | bool |
ec661b9d | 4117 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4118 | Address from, |
c9824451 | 4119 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4120 | unsigned int locsym_index, |
ec661b9d AM |
4121 | unsigned int r_type, |
4122 | Address addend) | |
e5d5f5ed | 4123 | { |
ec661b9d | 4124 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
9055360d | 4125 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
4126 | std::pair<typename Plt_stub_entries::iterator, bool> p |
4127 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
4128 | if (p.second) | |
4129 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 4130 | return this->can_reach_stub(from, off, r_type); |
e5d5f5ed AM |
4131 | } |
4132 | ||
ec661b9d AM |
4133 | // Find a plt call stub. |
4134 | ||
cf43a2fe | 4135 | template<int size, bool big_endian> |
ec5b8187 | 4136 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4137 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4138 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4139 | const Symbol* gsym, |
ec661b9d AM |
4140 | unsigned int r_type, |
4141 | Address addend) const | |
c9824451 | 4142 | { |
ec661b9d AM |
4143 | Plt_stub_ent ent(object, gsym, r_type, addend); |
4144 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4145 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4146 | } |
4147 | ||
4148 | template<int size, bool big_endian> | |
ec5b8187 | 4149 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4150 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4151 | { |
ec661b9d AM |
4152 | Plt_stub_ent ent(gsym); |
4153 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4154 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
cf43a2fe AM |
4155 | } |
4156 | ||
e5d5f5ed | 4157 | template<int size, bool big_endian> |
ec5b8187 | 4158 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4159 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4160 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4161 | unsigned int locsym_index, |
ec661b9d AM |
4162 | unsigned int r_type, |
4163 | Address addend) const | |
e5d5f5ed | 4164 | { |
ec661b9d AM |
4165 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
4166 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4167 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4168 | } |
4169 | ||
4170 | template<int size, bool big_endian> | |
ec5b8187 | 4171 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4172 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4173 | const Sized_relobj_file<size, big_endian>* object, |
4174 | unsigned int locsym_index) const | |
4175 | { | |
ec661b9d AM |
4176 | Plt_stub_ent ent(object, locsym_index); |
4177 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4178 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
4179 | } | |
4180 | ||
4181 | // Add a long branch stub if we don't already have one to given | |
4182 | // destination. | |
4183 | ||
4184 | template<int size, bool big_endian> | |
a3e60ddb | 4185 | bool |
ec661b9d AM |
4186 | Stub_table<size, big_endian>::add_long_branch_entry( |
4187 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4188 | unsigned int r_type, |
4189 | Address from, | |
d49044c7 AM |
4190 | Address to, |
4191 | bool save_res) | |
ec661b9d | 4192 | { |
d49044c7 | 4193 | Branch_stub_ent ent(object, to, save_res); |
ec661b9d AM |
4194 | Address off = this->branch_size_; |
4195 | if (this->long_branch_stubs_.insert(std::make_pair(ent, off)).second) | |
4196 | { | |
d49044c7 AM |
4197 | if (save_res) |
4198 | this->need_save_res_ = true; | |
4199 | else | |
4200 | { | |
4201 | unsigned int stub_size = this->branch_stub_size(to); | |
4202 | this->branch_size_ = off + stub_size; | |
4203 | if (size == 64 && stub_size != 4) | |
4204 | this->targ_->add_branch_lookup_table(to); | |
4205 | } | |
ec661b9d | 4206 | } |
a3e60ddb | 4207 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4208 | } |
4209 | ||
d49044c7 | 4210 | // Find long branch stub offset. |
ec661b9d AM |
4211 | |
4212 | template<int size, bool big_endian> | |
ec5b8187 | 4213 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4214 | Stub_table<size, big_endian>::find_long_branch_entry( |
4215 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4216 | Address to) const |
ec661b9d | 4217 | { |
d49044c7 | 4218 | Branch_stub_ent ent(object, to, false); |
ec661b9d AM |
4219 | typename Branch_stub_entries::const_iterator p |
4220 | = this->long_branch_stubs_.find(ent); | |
d49044c7 AM |
4221 | if (p == this->long_branch_stubs_.end()) |
4222 | return invalid_address; | |
4223 | if (p->first.save_res_) | |
4224 | return to - this->targ_->savres_section()->address() + this->branch_size_; | |
4225 | return p->second; | |
e5d5f5ed AM |
4226 | } |
4227 | ||
ec661b9d AM |
4228 | // A class to handle .glink. |
4229 | ||
4230 | template<int size, bool big_endian> | |
4231 | class Output_data_glink : public Output_section_data | |
4232 | { | |
4233 | public: | |
9055360d AM |
4234 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4235 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
4236 | static const int pltresolve_size = 16*4; |
4237 | ||
4238 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
4239 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
4240 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
4241 | { } |
4242 | ||
9d5781f8 | 4243 | void |
9055360d | 4244 | add_eh_frame(Layout* layout); |
9d5781f8 | 4245 | |
9055360d AM |
4246 | void |
4247 | add_global_entry(const Symbol*); | |
4248 | ||
4249 | Address | |
4250 | find_global_entry(const Symbol*) const; | |
4251 | ||
4252 | Address | |
4253 | global_entry_address() const | |
4254 | { | |
4255 | gold_assert(this->is_data_size_valid()); | |
4256 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4257 | return this->address() + global_entry_off; | |
9d5781f8 AM |
4258 | } |
4259 | ||
ec661b9d AM |
4260 | protected: |
4261 | // Write to a map file. | |
4262 | void | |
4263 | do_print_to_mapfile(Mapfile* mapfile) const | |
4264 | { mapfile->print_output_data(this, _("** glink")); } | |
4265 | ||
4266 | private: | |
4267 | void | |
4268 | set_final_data_size(); | |
4269 | ||
4270 | // Write out .glink | |
4271 | void | |
4272 | do_write(Output_file*); | |
4273 | ||
4274 | // Allows access to .got and .plt for do_write. | |
4275 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
4276 | |
4277 | // Map sym to stub offset. | |
4278 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
4279 | Global_entry_stub_entries global_entry_stubs_; | |
4280 | ||
4281 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
4282 | }; |
4283 | ||
9055360d AM |
4284 | template<int size, bool big_endian> |
4285 | void | |
4286 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
4287 | { | |
4288 | if (!parameters->options().ld_generated_unwind_info()) | |
4289 | return; | |
4290 | ||
4291 | if (size == 64) | |
4292 | { | |
4293 | if (this->targ_->abiversion() < 2) | |
4294 | layout->add_eh_frame_for_plt(this, | |
4295 | Eh_cie<64>::eh_frame_cie, | |
4296 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4297 | glink_eh_frame_fde_64v1, | |
4298 | sizeof (glink_eh_frame_fde_64v1)); | |
4299 | else | |
4300 | layout->add_eh_frame_for_plt(this, | |
4301 | Eh_cie<64>::eh_frame_cie, | |
4302 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4303 | glink_eh_frame_fde_64v2, | |
4304 | sizeof (glink_eh_frame_fde_64v2)); | |
4305 | } | |
4306 | else | |
4307 | { | |
4308 | // 32-bit .glink can use the default since the CIE return | |
4309 | // address reg, LR, is valid. | |
4310 | layout->add_eh_frame_for_plt(this, | |
4311 | Eh_cie<32>::eh_frame_cie, | |
4312 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4313 | default_fde, | |
4314 | sizeof (default_fde)); | |
4315 | // Except where LR is used in a PIC __glink_PLTresolve. | |
4316 | if (parameters->options().output_is_position_independent()) | |
4317 | layout->add_eh_frame_for_plt(this, | |
4318 | Eh_cie<32>::eh_frame_cie, | |
4319 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4320 | glink_eh_frame_fde_32, | |
4321 | sizeof (glink_eh_frame_fde_32)); | |
4322 | } | |
4323 | } | |
4324 | ||
4325 | template<int size, bool big_endian> | |
4326 | void | |
4327 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
4328 | { | |
4329 | std::pair<typename Global_entry_stub_entries::iterator, bool> p | |
4330 | = this->global_entry_stubs_.insert(std::make_pair(gsym, this->ge_size_)); | |
4331 | if (p.second) | |
4332 | this->ge_size_ += 16; | |
4333 | } | |
4334 | ||
4335 | template<int size, bool big_endian> | |
4336 | typename Output_data_glink<size, big_endian>::Address | |
4337 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
4338 | { | |
4339 | typename Global_entry_stub_entries::const_iterator p | |
4340 | = this->global_entry_stubs_.find(gsym); | |
4341 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
4342 | } | |
4343 | ||
cf43a2fe AM |
4344 | template<int size, bool big_endian> |
4345 | void | |
4346 | Output_data_glink<size, big_endian>::set_final_data_size() | |
4347 | { | |
ec661b9d AM |
4348 | unsigned int count = this->targ_->plt_entry_count(); |
4349 | section_size_type total = 0; | |
cf43a2fe AM |
4350 | |
4351 | if (count != 0) | |
4352 | { | |
4353 | if (size == 32) | |
4354 | { | |
cf43a2fe AM |
4355 | // space for branch table |
4356 | total += 4 * (count - 1); | |
4357 | ||
4358 | total += -total & 15; | |
4359 | total += this->pltresolve_size; | |
4360 | } | |
4361 | else | |
4362 | { | |
cf43a2fe AM |
4363 | total += this->pltresolve_size; |
4364 | ||
4365 | // space for branch table | |
b4f7960d AM |
4366 | total += 4 * count; |
4367 | if (this->targ_->abiversion() < 2) | |
4368 | { | |
4369 | total += 4 * count; | |
4370 | if (count > 0x8000) | |
4371 | total += 4 * (count - 0x8000); | |
4372 | } | |
cf43a2fe AM |
4373 | } |
4374 | } | |
9055360d AM |
4375 | this->end_branch_table_ = total; |
4376 | total = (total + 15) & -16; | |
4377 | total += this->ge_size_; | |
cf43a2fe AM |
4378 | |
4379 | this->set_data_size(total); | |
4380 | } | |
4381 | ||
ec661b9d | 4382 | // Write out plt and long branch stub code. |
cf43a2fe AM |
4383 | |
4384 | template<int size, bool big_endian> | |
4385 | void | |
ec661b9d | 4386 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 4387 | { |
ec661b9d AM |
4388 | if (this->plt_call_stubs_.empty() |
4389 | && this->long_branch_stubs_.empty()) | |
4390 | return; | |
4391 | ||
4392 | const section_size_type start_off = this->offset(); | |
4393 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 4394 | const section_size_type oview_size = |
ec661b9d | 4395 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 4396 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 4397 | unsigned char* p; |
42cacb20 | 4398 | |
cf43a2fe AM |
4399 | if (size == 64) |
4400 | { | |
ec661b9d AM |
4401 | const Output_data_got_powerpc<size, big_endian>* got |
4402 | = this->targ_->got_section(); | |
dd93cd0a | 4403 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 4404 | |
ec661b9d | 4405 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 4406 | { |
ec661b9d AM |
4407 | // The base address of the .plt section. |
4408 | Address plt_base = this->targ_->plt_section()->address(); | |
4409 | Address iplt_base = invalid_address; | |
4410 | ||
4411 | // Write out plt call stubs. | |
4412 | typename Plt_stub_entries::const_iterator cs; | |
4413 | for (cs = this->plt_call_stubs_.begin(); | |
4414 | cs != this->plt_call_stubs_.end(); | |
4415 | ++cs) | |
e5d5f5ed | 4416 | { |
91c2b899 AM |
4417 | bool is_iplt; |
4418 | Address pltoff = this->plt_off(cs, &is_iplt); | |
9e69ed50 | 4419 | Address plt_addr = pltoff; |
91c2b899 | 4420 | if (is_iplt) |
ec661b9d AM |
4421 | { |
4422 | if (iplt_base == invalid_address) | |
4423 | iplt_base = this->targ_->iplt_section()->address(); | |
4424 | plt_addr += iplt_base; | |
4425 | } | |
4426 | else | |
4427 | plt_addr += plt_base; | |
4428 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
4429 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
4430 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 4431 | Address off = plt_addr - got_addr; |
ec661b9d | 4432 | |
9e69ed50 | 4433 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
4434 | gold_error(_("%s: linkage table error against `%s'"), |
4435 | cs->first.object_->name().c_str(), | |
4436 | cs->first.sym_->demangled_name().c_str()); | |
4437 | ||
b4f7960d AM |
4438 | bool plt_load_toc = this->targ_->abiversion() < 2; |
4439 | bool static_chain | |
4440 | = plt_load_toc && parameters->options().plt_static_chain(); | |
4441 | bool thread_safe | |
4442 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
4443 | bool use_fake_dep = false; |
4444 | Address cmp_branch_off = 0; | |
4445 | if (thread_safe) | |
4446 | { | |
4447 | unsigned int pltindex | |
4448 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
4449 | / this->targ_->plt_entry_size()); | |
4450 | Address glinkoff | |
4451 | = (this->targ_->glink_section()->pltresolve_size | |
4452 | + pltindex * 8); | |
4453 | if (pltindex > 32768) | |
4454 | glinkoff += (pltindex - 32768) * 4; | |
4455 | Address to | |
4456 | = this->targ_->glink_section()->address() + glinkoff; | |
4457 | Address from | |
4458 | = (this->stub_address() + cs->second + 24 | |
4459 | + 4 * (ha(off) != 0) | |
4460 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
4461 | + 4 * static_chain); | |
4462 | cmp_branch_off = to - from; | |
4463 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
4464 | } | |
4465 | ||
ec661b9d | 4466 | p = oview + cs->second; |
9e69ed50 | 4467 | if (ha(off) != 0) |
ec661b9d | 4468 | { |
b4f7960d AM |
4469 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4470 | p += 4; | |
397998fc AM |
4471 | if (plt_load_toc) |
4472 | { | |
4473 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
4474 | p += 4; | |
4475 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
4476 | p += 4; | |
4477 | } | |
4478 | else | |
4479 | { | |
4480 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
4481 | p += 4; | |
4482 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
4483 | p += 4; | |
4484 | } | |
b4f7960d AM |
4485 | if (plt_load_toc |
4486 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4487 | { |
b4f7960d AM |
4488 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
4489 | p += 4; | |
9e69ed50 | 4490 | off = 0; |
ec661b9d | 4491 | } |
b4f7960d AM |
4492 | write_insn<big_endian>(p, mtctr_12); |
4493 | p += 4; | |
4494 | if (plt_load_toc) | |
9e69ed50 | 4495 | { |
b4f7960d AM |
4496 | if (use_fake_dep) |
4497 | { | |
4498 | write_insn<big_endian>(p, xor_2_12_12); | |
4499 | p += 4; | |
4500 | write_insn<big_endian>(p, add_11_11_2); | |
4501 | p += 4; | |
4502 | } | |
4503 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
4504 | p += 4; | |
4505 | if (static_chain) | |
4506 | { | |
4507 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
4508 | p += 4; | |
4509 | } | |
9e69ed50 | 4510 | } |
ec661b9d AM |
4511 | } |
4512 | else | |
4513 | { | |
b4f7960d AM |
4514 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4515 | p += 4; | |
4516 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
4517 | p += 4; | |
4518 | if (plt_load_toc | |
4519 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4520 | { |
b4f7960d AM |
4521 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
4522 | p += 4; | |
9e69ed50 | 4523 | off = 0; |
ec661b9d | 4524 | } |
b4f7960d AM |
4525 | write_insn<big_endian>(p, mtctr_12); |
4526 | p += 4; | |
4527 | if (plt_load_toc) | |
9e69ed50 | 4528 | { |
b4f7960d AM |
4529 | if (use_fake_dep) |
4530 | { | |
4531 | write_insn<big_endian>(p, xor_11_12_12); | |
4532 | p += 4; | |
4533 | write_insn<big_endian>(p, add_2_2_11); | |
4534 | p += 4; | |
4535 | } | |
4536 | if (static_chain) | |
4537 | { | |
4538 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
4539 | p += 4; | |
4540 | } | |
4541 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
4542 | p += 4; | |
9e69ed50 | 4543 | } |
ec661b9d | 4544 | } |
9e69ed50 AM |
4545 | if (thread_safe && !use_fake_dep) |
4546 | { | |
b4f7960d AM |
4547 | write_insn<big_endian>(p, cmpldi_2_0); |
4548 | p += 4; | |
4549 | write_insn<big_endian>(p, bnectr_p4); | |
4550 | p += 4; | |
9e69ed50 AM |
4551 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
4552 | } | |
4553 | else | |
4554 | write_insn<big_endian>(p, bctr); | |
e5d5f5ed | 4555 | } |
ec661b9d AM |
4556 | } |
4557 | ||
4558 | // Write out long branch stubs. | |
4559 | typename Branch_stub_entries::const_iterator bs; | |
4560 | for (bs = this->long_branch_stubs_.begin(); | |
4561 | bs != this->long_branch_stubs_.end(); | |
4562 | ++bs) | |
4563 | { | |
d49044c7 AM |
4564 | if (bs->first.save_res_) |
4565 | continue; | |
ec661b9d AM |
4566 | p = oview + this->plt_size_ + bs->second; |
4567 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4568 | Address delta = bs->first.dest_ - loc; | |
4569 | if (delta + (1 << 25) < 2 << 25) | |
4570 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 4571 | else |
cf43a2fe | 4572 | { |
ec661b9d AM |
4573 | Address brlt_addr |
4574 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
4575 | gold_assert(brlt_addr != invalid_address); | |
4576 | brlt_addr += this->targ_->brlt_section()->address(); | |
4577 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
4578 | Address brltoff = brlt_addr - got_addr; | |
4579 | if (ha(brltoff) == 0) | |
4580 | { | |
b4f7960d | 4581 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
4582 | } |
4583 | else | |
cf43a2fe | 4584 | { |
397998fc AM |
4585 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
4586 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 4587 | } |
b4f7960d | 4588 | write_insn<big_endian>(p, mtctr_12), p += 4; |
ec661b9d | 4589 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 4590 | } |
ec661b9d AM |
4591 | } |
4592 | } | |
4593 | else | |
4594 | { | |
4595 | if (!this->plt_call_stubs_.empty()) | |
4596 | { | |
4597 | // The base address of the .plt section. | |
4598 | Address plt_base = this->targ_->plt_section()->address(); | |
4599 | Address iplt_base = invalid_address; | |
4600 | // The address of _GLOBAL_OFFSET_TABLE_. | |
4601 | Address g_o_t = invalid_address; | |
4602 | ||
4603 | // Write out plt call stubs. | |
4604 | typename Plt_stub_entries::const_iterator cs; | |
4605 | for (cs = this->plt_call_stubs_.begin(); | |
4606 | cs != this->plt_call_stubs_.end(); | |
4607 | ++cs) | |
cf43a2fe | 4608 | { |
91c2b899 AM |
4609 | bool is_iplt; |
4610 | Address plt_addr = this->plt_off(cs, &is_iplt); | |
4611 | if (is_iplt) | |
ec661b9d AM |
4612 | { |
4613 | if (iplt_base == invalid_address) | |
4614 | iplt_base = this->targ_->iplt_section()->address(); | |
4615 | plt_addr += iplt_base; | |
4616 | } | |
4617 | else | |
4618 | plt_addr += plt_base; | |
4619 | ||
4620 | p = oview + cs->second; | |
4621 | if (parameters->options().output_is_position_independent()) | |
4622 | { | |
4623 | Address got_addr; | |
4624 | const Powerpc_relobj<size, big_endian>* ppcobj | |
4625 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
4626 | (cs->first.object_)); | |
4627 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
4628 | { | |
4629 | unsigned int got2 = ppcobj->got2_shndx(); | |
4630 | got_addr = ppcobj->get_output_section_offset(got2); | |
4631 | gold_assert(got_addr != invalid_address); | |
4632 | got_addr += (ppcobj->output_section(got2)->address() | |
4633 | + cs->first.addend_); | |
4634 | } | |
4635 | else | |
4636 | { | |
4637 | if (g_o_t == invalid_address) | |
4638 | { | |
4639 | const Output_data_got_powerpc<size, big_endian>* got | |
4640 | = this->targ_->got_section(); | |
4641 | g_o_t = got->address() + got->g_o_t(); | |
4642 | } | |
4643 | got_addr = g_o_t; | |
4644 | } | |
4645 | ||
9e69ed50 AM |
4646 | Address off = plt_addr - got_addr; |
4647 | if (ha(off) == 0) | |
ec661b9d | 4648 | { |
9e69ed50 | 4649 | write_insn<big_endian>(p + 0, lwz_11_30 + l(off)); |
ec661b9d AM |
4650 | write_insn<big_endian>(p + 4, mtctr_11); |
4651 | write_insn<big_endian>(p + 8, bctr); | |
4652 | } | |
4653 | else | |
4654 | { | |
9e69ed50 AM |
4655 | write_insn<big_endian>(p + 0, addis_11_30 + ha(off)); |
4656 | write_insn<big_endian>(p + 4, lwz_11_11 + l(off)); | |
ec661b9d AM |
4657 | write_insn<big_endian>(p + 8, mtctr_11); |
4658 | write_insn<big_endian>(p + 12, bctr); | |
4659 | } | |
4660 | } | |
4661 | else | |
4662 | { | |
4663 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
4664 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
4665 | write_insn<big_endian>(p + 8, mtctr_11); | |
4666 | write_insn<big_endian>(p + 12, bctr); | |
4667 | } | |
4668 | } | |
4669 | } | |
4670 | ||
4671 | // Write out long branch stubs. | |
4672 | typename Branch_stub_entries::const_iterator bs; | |
4673 | for (bs = this->long_branch_stubs_.begin(); | |
4674 | bs != this->long_branch_stubs_.end(); | |
4675 | ++bs) | |
4676 | { | |
d49044c7 AM |
4677 | if (bs->first.save_res_) |
4678 | continue; | |
ec661b9d AM |
4679 | p = oview + this->plt_size_ + bs->second; |
4680 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4681 | Address delta = bs->first.dest_ - loc; | |
4682 | if (delta + (1 << 25) < 2 << 25) | |
4683 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
4684 | else if (!parameters->options().output_is_position_independent()) | |
4685 | { | |
4686 | write_insn<big_endian>(p + 0, lis_12 + ha(bs->first.dest_)); | |
4687 | write_insn<big_endian>(p + 4, addi_12_12 + l(bs->first.dest_)); | |
4688 | write_insn<big_endian>(p + 8, mtctr_12); | |
4689 | write_insn<big_endian>(p + 12, bctr); | |
4690 | } | |
4691 | else | |
4692 | { | |
4693 | delta -= 8; | |
4694 | write_insn<big_endian>(p + 0, mflr_0); | |
4695 | write_insn<big_endian>(p + 4, bcl_20_31); | |
4696 | write_insn<big_endian>(p + 8, mflr_12); | |
4697 | write_insn<big_endian>(p + 12, addis_12_12 + ha(delta)); | |
4698 | write_insn<big_endian>(p + 16, addi_12_12 + l(delta)); | |
4699 | write_insn<big_endian>(p + 20, mtlr_0); | |
4700 | write_insn<big_endian>(p + 24, mtctr_12); | |
4701 | write_insn<big_endian>(p + 28, bctr); | |
cf43a2fe AM |
4702 | } |
4703 | } | |
ec661b9d | 4704 | } |
d49044c7 AM |
4705 | if (this->need_save_res_) |
4706 | { | |
4707 | p = oview + this->plt_size_ + this->branch_size_; | |
4708 | memcpy (p, this->targ_->savres_section()->contents(), | |
4709 | this->targ_->savres_section()->data_size()); | |
4710 | } | |
ec661b9d AM |
4711 | } |
4712 | ||
4713 | // Write out .glink. | |
4714 | ||
4715 | template<int size, bool big_endian> | |
4716 | void | |
4717 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
4718 | { | |
4719 | const section_size_type off = this->offset(); | |
4720 | const section_size_type oview_size = | |
4721 | convert_to_section_size_type(this->data_size()); | |
4722 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
4723 | unsigned char* p; | |
4724 | ||
4725 | // The base address of the .plt section. | |
4726 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
4727 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 4728 | |
ec661b9d AM |
4729 | if (size == 64) |
4730 | { | |
9055360d | 4731 | if (this->end_branch_table_ != 0) |
b4f7960d | 4732 | { |
9055360d AM |
4733 | // Write pltresolve stub. |
4734 | p = oview; | |
4735 | Address after_bcl = this->address() + 16; | |
4736 | Address pltoff = plt_base - after_bcl; | |
4737 | ||
4738 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 4739 | |
b4f7960d | 4740 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 4741 | { |
9055360d AM |
4742 | write_insn<big_endian>(p, mflr_12), p += 4; |
4743 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4744 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4745 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4746 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
4747 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4748 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4749 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
4750 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4751 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
4752 | } | |
4753 | else | |
4754 | { | |
4755 | write_insn<big_endian>(p, mflr_0), p += 4; | |
4756 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4757 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4758 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4759 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
4760 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
4761 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4762 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
4763 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4764 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
4765 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4766 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
4767 | } | |
4768 | write_insn<big_endian>(p, bctr), p += 4; | |
4769 | while (p < oview + this->pltresolve_size) | |
4770 | write_insn<big_endian>(p, nop), p += 4; | |
4771 | ||
4772 | // Write lazy link call stubs. | |
4773 | uint32_t indx = 0; | |
4774 | while (p < oview + this->end_branch_table_) | |
4775 | { | |
4776 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 4777 | { |
9055360d AM |
4778 | if (indx < 0x8000) |
4779 | { | |
4780 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
4781 | } | |
4782 | else | |
4783 | { | |
bbec1a5d | 4784 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
4785 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
4786 | } | |
b4f7960d | 4787 | } |
9055360d AM |
4788 | uint32_t branch_off = 8 - (p - oview); |
4789 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
4790 | indx++; | |
cf43a2fe | 4791 | } |
9055360d AM |
4792 | } |
4793 | ||
4794 | Address plt_base = this->targ_->plt_section()->address(); | |
4795 | Address iplt_base = invalid_address; | |
4796 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4797 | Address global_entry_base = this->address() + global_entry_off; | |
4798 | typename Global_entry_stub_entries::const_iterator ge; | |
4799 | for (ge = this->global_entry_stubs_.begin(); | |
4800 | ge != this->global_entry_stubs_.end(); | |
4801 | ++ge) | |
4802 | { | |
4803 | p = oview + global_entry_off + ge->second; | |
4804 | Address plt_addr = ge->first->plt_offset(); | |
4805 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
4806 | && ge->first->can_use_relative_reloc(false)) | |
4807 | { | |
4808 | if (iplt_base == invalid_address) | |
4809 | iplt_base = this->targ_->iplt_section()->address(); | |
4810 | plt_addr += iplt_base; | |
4811 | } | |
4812 | else | |
4813 | plt_addr += plt_base; | |
4814 | Address my_addr = global_entry_base + ge->second; | |
4815 | Address off = plt_addr - my_addr; | |
4816 | ||
4817 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
4818 | gold_error(_("%s: linkage table error against `%s'"), | |
4819 | ge->first->object()->name().c_str(), | |
4820 | ge->first->demangled_name().c_str()); | |
4821 | ||
4822 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
4823 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
4824 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4825 | write_insn<big_endian>(p, bctr); | |
cf43a2fe AM |
4826 | } |
4827 | } | |
4828 | else | |
4829 | { | |
ec661b9d AM |
4830 | const Output_data_got_powerpc<size, big_endian>* got |
4831 | = this->targ_->got_section(); | |
dd93cd0a AM |
4832 | // The address of _GLOBAL_OFFSET_TABLE_. |
4833 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 4834 | |
cf43a2fe | 4835 | // Write out pltresolve branch table. |
ec661b9d | 4836 | p = oview; |
cf43a2fe | 4837 | unsigned int the_end = oview_size - this->pltresolve_size; |
c9269dff | 4838 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
4839 | while (p < end_p - 8 * 4) |
4840 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
4841 | while (p < end_p) | |
4842 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 4843 | |
cf43a2fe AM |
4844 | // Write out pltresolve call stub. |
4845 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 4846 | { |
ec661b9d | 4847 | Address res0_off = 0; |
dd93cd0a AM |
4848 | Address after_bcl_off = the_end + 12; |
4849 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
4850 | |
4851 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
4852 | write_insn<big_endian>(p + 4, mflr_0); | |
4853 | write_insn<big_endian>(p + 8, bcl_20_31); | |
4854 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
4855 | write_insn<big_endian>(p + 16, mflr_12); | |
4856 | write_insn<big_endian>(p + 20, mtlr_0); | |
4857 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
4858 | ||
dd93cd0a | 4859 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
4860 | |
4861 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
4862 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
4863 | { | |
4864 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
4865 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
4866 | } | |
4867 | else | |
4868 | { | |
4869 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
4870 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
4871 | } | |
4872 | write_insn<big_endian>(p + 40, mtctr_0); | |
4873 | write_insn<big_endian>(p + 44, add_0_11_11); | |
4874 | write_insn<big_endian>(p + 48, add_11_0_11); | |
4875 | write_insn<big_endian>(p + 52, bctr); | |
4876 | write_insn<big_endian>(p + 56, nop); | |
4877 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4878 | } |
cf43a2fe | 4879 | else |
42cacb20 | 4880 | { |
ec661b9d | 4881 | Address res0 = this->address(); |
cf43a2fe AM |
4882 | |
4883 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
4884 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
4885 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4886 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
4887 | else | |
4888 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
4889 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
4890 | write_insn<big_endian>(p + 16, mtctr_0); | |
4891 | write_insn<big_endian>(p + 20, add_0_11_11); | |
4892 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4893 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
4894 | else | |
4895 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
4896 | write_insn<big_endian>(p + 28, add_11_0_11); | |
4897 | write_insn<big_endian>(p + 32, bctr); | |
4898 | write_insn<big_endian>(p + 36, nop); | |
4899 | write_insn<big_endian>(p + 40, nop); | |
4900 | write_insn<big_endian>(p + 44, nop); | |
4901 | write_insn<big_endian>(p + 48, nop); | |
4902 | write_insn<big_endian>(p + 52, nop); | |
4903 | write_insn<big_endian>(p + 56, nop); | |
4904 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4905 | } |
cf43a2fe | 4906 | p += 64; |
42cacb20 DE |
4907 | } |
4908 | ||
cf43a2fe AM |
4909 | of->write_output_view(off, oview_size, oview); |
4910 | } | |
4911 | ||
f3a0ed29 AM |
4912 | |
4913 | // A class to handle linker generated save/restore functions. | |
4914 | ||
4915 | template<int size, bool big_endian> | |
4916 | class Output_data_save_res : public Output_section_data_build | |
4917 | { | |
4918 | public: | |
4919 | Output_data_save_res(Symbol_table* symtab); | |
4920 | ||
d49044c7 AM |
4921 | const unsigned char* |
4922 | contents() const | |
4923 | { | |
4924 | return contents_; | |
4925 | } | |
4926 | ||
f3a0ed29 AM |
4927 | protected: |
4928 | // Write to a map file. | |
4929 | void | |
4930 | do_print_to_mapfile(Mapfile* mapfile) const | |
4931 | { mapfile->print_output_data(this, _("** save/restore")); } | |
4932 | ||
4933 | void | |
4934 | do_write(Output_file*); | |
4935 | ||
4936 | private: | |
4937 | // The maximum size of save/restore contents. | |
4938 | static const unsigned int savres_max = 218*4; | |
4939 | ||
4940 | void | |
4941 | savres_define(Symbol_table* symtab, | |
4942 | const char *name, | |
4943 | unsigned int lo, unsigned int hi, | |
4944 | unsigned char* write_ent(unsigned char*, int), | |
4945 | unsigned char* write_tail(unsigned char*, int)); | |
4946 | ||
4947 | unsigned char *contents_; | |
4948 | }; | |
4949 | ||
4950 | template<bool big_endian> | |
4951 | static unsigned char* | |
4952 | savegpr0(unsigned char* p, int r) | |
4953 | { | |
4954 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4955 | write_insn<big_endian>(p, insn); | |
4956 | return p + 4; | |
4957 | } | |
4958 | ||
4959 | template<bool big_endian> | |
4960 | static unsigned char* | |
4961 | savegpr0_tail(unsigned char* p, int r) | |
4962 | { | |
4963 | p = savegpr0<big_endian>(p, r); | |
4964 | uint32_t insn = std_0_1 + 16; | |
4965 | write_insn<big_endian>(p, insn); | |
4966 | p = p + 4; | |
4967 | write_insn<big_endian>(p, blr); | |
4968 | return p + 4; | |
4969 | } | |
4970 | ||
4971 | template<bool big_endian> | |
62fe925a | 4972 | static unsigned char* |
f3a0ed29 AM |
4973 | restgpr0(unsigned char* p, int r) |
4974 | { | |
4975 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4976 | write_insn<big_endian>(p, insn); | |
4977 | return p + 4; | |
4978 | } | |
4979 | ||
4980 | template<bool big_endian> | |
62fe925a | 4981 | static unsigned char* |
f3a0ed29 AM |
4982 | restgpr0_tail(unsigned char* p, int r) |
4983 | { | |
4984 | uint32_t insn = ld_0_1 + 16; | |
4985 | write_insn<big_endian>(p, insn); | |
4986 | p = p + 4; | |
4987 | p = restgpr0<big_endian>(p, r); | |
4988 | write_insn<big_endian>(p, mtlr_0); | |
4989 | p = p + 4; | |
4990 | if (r == 29) | |
4991 | { | |
4992 | p = restgpr0<big_endian>(p, 30); | |
4993 | p = restgpr0<big_endian>(p, 31); | |
4994 | } | |
4995 | write_insn<big_endian>(p, blr); | |
4996 | return p + 4; | |
4997 | } | |
4998 | ||
4999 | template<bool big_endian> | |
62fe925a | 5000 | static unsigned char* |
f3a0ed29 AM |
5001 | savegpr1(unsigned char* p, int r) |
5002 | { | |
5003 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5004 | write_insn<big_endian>(p, insn); | |
5005 | return p + 4; | |
5006 | } | |
5007 | ||
5008 | template<bool big_endian> | |
62fe925a | 5009 | static unsigned char* |
f3a0ed29 AM |
5010 | savegpr1_tail(unsigned char* p, int r) |
5011 | { | |
5012 | p = savegpr1<big_endian>(p, r); | |
5013 | write_insn<big_endian>(p, blr); | |
5014 | return p + 4; | |
5015 | } | |
5016 | ||
5017 | template<bool big_endian> | |
62fe925a | 5018 | static unsigned char* |
f3a0ed29 AM |
5019 | restgpr1(unsigned char* p, int r) |
5020 | { | |
5021 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5022 | write_insn<big_endian>(p, insn); | |
5023 | return p + 4; | |
5024 | } | |
5025 | ||
5026 | template<bool big_endian> | |
62fe925a | 5027 | static unsigned char* |
f3a0ed29 AM |
5028 | restgpr1_tail(unsigned char* p, int r) |
5029 | { | |
5030 | p = restgpr1<big_endian>(p, r); | |
5031 | write_insn<big_endian>(p, blr); | |
5032 | return p + 4; | |
5033 | } | |
5034 | ||
5035 | template<bool big_endian> | |
62fe925a | 5036 | static unsigned char* |
f3a0ed29 AM |
5037 | savefpr(unsigned char* p, int r) |
5038 | { | |
5039 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5040 | write_insn<big_endian>(p, insn); | |
5041 | return p + 4; | |
5042 | } | |
5043 | ||
5044 | template<bool big_endian> | |
62fe925a | 5045 | static unsigned char* |
f3a0ed29 AM |
5046 | savefpr0_tail(unsigned char* p, int r) |
5047 | { | |
5048 | p = savefpr<big_endian>(p, r); | |
5049 | write_insn<big_endian>(p, std_0_1 + 16); | |
5050 | p = p + 4; | |
5051 | write_insn<big_endian>(p, blr); | |
5052 | return p + 4; | |
5053 | } | |
5054 | ||
5055 | template<bool big_endian> | |
62fe925a | 5056 | static unsigned char* |
f3a0ed29 AM |
5057 | restfpr(unsigned char* p, int r) |
5058 | { | |
5059 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
5060 | write_insn<big_endian>(p, insn); | |
5061 | return p + 4; | |
5062 | } | |
5063 | ||
5064 | template<bool big_endian> | |
62fe925a | 5065 | static unsigned char* |
f3a0ed29 AM |
5066 | restfpr0_tail(unsigned char* p, int r) |
5067 | { | |
5068 | write_insn<big_endian>(p, ld_0_1 + 16); | |
5069 | p = p + 4; | |
5070 | p = restfpr<big_endian>(p, r); | |
5071 | write_insn<big_endian>(p, mtlr_0); | |
5072 | p = p + 4; | |
5073 | if (r == 29) | |
5074 | { | |
5075 | p = restfpr<big_endian>(p, 30); | |
5076 | p = restfpr<big_endian>(p, 31); | |
5077 | } | |
5078 | write_insn<big_endian>(p, blr); | |
5079 | return p + 4; | |
5080 | } | |
5081 | ||
5082 | template<bool big_endian> | |
62fe925a | 5083 | static unsigned char* |
f3a0ed29 AM |
5084 | savefpr1_tail(unsigned char* p, int r) |
5085 | { | |
5086 | p = savefpr<big_endian>(p, r); | |
5087 | write_insn<big_endian>(p, blr); | |
5088 | return p + 4; | |
5089 | } | |
5090 | ||
5091 | template<bool big_endian> | |
62fe925a | 5092 | static unsigned char* |
f3a0ed29 AM |
5093 | restfpr1_tail(unsigned char* p, int r) |
5094 | { | |
5095 | p = restfpr<big_endian>(p, r); | |
5096 | write_insn<big_endian>(p, blr); | |
5097 | return p + 4; | |
5098 | } | |
5099 | ||
5100 | template<bool big_endian> | |
62fe925a | 5101 | static unsigned char* |
f3a0ed29 AM |
5102 | savevr(unsigned char* p, int r) |
5103 | { | |
5104 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5105 | write_insn<big_endian>(p, insn); | |
5106 | p = p + 4; | |
5107 | insn = stvx_0_12_0 + (r << 21); | |
5108 | write_insn<big_endian>(p, insn); | |
5109 | return p + 4; | |
5110 | } | |
5111 | ||
5112 | template<bool big_endian> | |
62fe925a | 5113 | static unsigned char* |
f3a0ed29 AM |
5114 | savevr_tail(unsigned char* p, int r) |
5115 | { | |
5116 | p = savevr<big_endian>(p, r); | |
5117 | write_insn<big_endian>(p, blr); | |
5118 | return p + 4; | |
5119 | } | |
5120 | ||
5121 | template<bool big_endian> | |
62fe925a | 5122 | static unsigned char* |
f3a0ed29 AM |
5123 | restvr(unsigned char* p, int r) |
5124 | { | |
5125 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5126 | write_insn<big_endian>(p, insn); | |
5127 | p = p + 4; | |
5128 | insn = lvx_0_12_0 + (r << 21); | |
5129 | write_insn<big_endian>(p, insn); | |
5130 | return p + 4; | |
5131 | } | |
5132 | ||
5133 | template<bool big_endian> | |
62fe925a | 5134 | static unsigned char* |
f3a0ed29 AM |
5135 | restvr_tail(unsigned char* p, int r) |
5136 | { | |
5137 | p = restvr<big_endian>(p, r); | |
5138 | write_insn<big_endian>(p, blr); | |
5139 | return p + 4; | |
5140 | } | |
5141 | ||
5142 | ||
5143 | template<int size, bool big_endian> | |
5144 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
5145 | Symbol_table* symtab) | |
5146 | : Output_section_data_build(4), | |
5147 | contents_(NULL) | |
5148 | { | |
5149 | this->savres_define(symtab, | |
5150 | "_savegpr0_", 14, 31, | |
5151 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
5152 | this->savres_define(symtab, | |
5153 | "_restgpr0_", 14, 29, | |
5154 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5155 | this->savres_define(symtab, | |
5156 | "_restgpr0_", 30, 31, | |
5157 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5158 | this->savres_define(symtab, | |
5159 | "_savegpr1_", 14, 31, | |
5160 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
5161 | this->savres_define(symtab, | |
5162 | "_restgpr1_", 14, 31, | |
5163 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
5164 | this->savres_define(symtab, | |
5165 | "_savefpr_", 14, 31, | |
5166 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
5167 | this->savres_define(symtab, | |
5168 | "_restfpr_", 14, 29, | |
5169 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5170 | this->savres_define(symtab, | |
5171 | "_restfpr_", 30, 31, | |
5172 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5173 | this->savres_define(symtab, | |
5174 | "._savef", 14, 31, | |
5175 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
5176 | this->savres_define(symtab, | |
5177 | "._restf", 14, 31, | |
5178 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
5179 | this->savres_define(symtab, | |
5180 | "_savevr_", 20, 31, | |
5181 | savevr<big_endian>, savevr_tail<big_endian>); | |
5182 | this->savres_define(symtab, | |
5183 | "_restvr_", 20, 31, | |
5184 | restvr<big_endian>, restvr_tail<big_endian>); | |
5185 | } | |
5186 | ||
5187 | template<int size, bool big_endian> | |
5188 | void | |
5189 | Output_data_save_res<size, big_endian>::savres_define( | |
5190 | Symbol_table* symtab, | |
5191 | const char *name, | |
5192 | unsigned int lo, unsigned int hi, | |
5193 | unsigned char* write_ent(unsigned char*, int), | |
5194 | unsigned char* write_tail(unsigned char*, int)) | |
5195 | { | |
5196 | size_t len = strlen(name); | |
5197 | bool writing = false; | |
5198 | char sym[16]; | |
5199 | ||
5200 | memcpy(sym, name, len); | |
5201 | sym[len + 2] = 0; | |
5202 | ||
5203 | for (unsigned int i = lo; i <= hi; i++) | |
5204 | { | |
5205 | sym[len + 0] = i / 10 + '0'; | |
5206 | sym[len + 1] = i % 10 + '0'; | |
5207 | Symbol* gsym = symtab->lookup(sym); | |
5208 | bool refd = gsym != NULL && gsym->is_undefined(); | |
5209 | writing = writing || refd; | |
5210 | if (writing) | |
5211 | { | |
5212 | if (this->contents_ == NULL) | |
5213 | this->contents_ = new unsigned char[this->savres_max]; | |
5214 | ||
ec661b9d | 5215 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
5216 | unsigned char* p = this->contents_ + value; |
5217 | if (i != hi) | |
5218 | p = write_ent(p, i); | |
5219 | else | |
5220 | p = write_tail(p, i); | |
ec661b9d | 5221 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
5222 | this->set_current_data_size(cur_size); |
5223 | if (refd) | |
5224 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
5225 | this, value, cur_size - value, | |
5226 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
5227 | elfcpp::STV_HIDDEN, 0, false, false); | |
5228 | } | |
5229 | } | |
5230 | } | |
5231 | ||
5232 | // Write out save/restore. | |
5233 | ||
5234 | template<int size, bool big_endian> | |
5235 | void | |
5236 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
5237 | { | |
ec661b9d | 5238 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
5239 | const section_size_type oview_size = |
5240 | convert_to_section_size_type(this->data_size()); | |
5241 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5242 | memcpy(oview, this->contents_, oview_size); | |
5243 | of->write_output_view(off, oview_size, oview); | |
5244 | } | |
5245 | ||
5246 | ||
cf43a2fe | 5247 | // Create the glink section. |
42cacb20 | 5248 | |
cf43a2fe AM |
5249 | template<int size, bool big_endian> |
5250 | void | |
5251 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
5252 | { | |
5253 | if (this->glink_ == NULL) | |
5254 | { | |
5255 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 5256 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
5257 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
5258 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
5259 | this->glink_, ORDER_TEXT, false); | |
5260 | } | |
42cacb20 DE |
5261 | } |
5262 | ||
5263 | // Create a PLT entry for a global symbol. | |
5264 | ||
5265 | template<int size, bool big_endian> | |
5266 | void | |
ec661b9d AM |
5267 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
5268 | Layout* layout, | |
5269 | Symbol* gsym) | |
42cacb20 | 5270 | { |
e5d5f5ed AM |
5271 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
5272 | && gsym->can_use_relative_reloc(false)) | |
5273 | { | |
5274 | if (this->iplt_ == NULL) | |
40b469d7 | 5275 | this->make_iplt_section(symtab, layout); |
03e25981 | 5276 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
5277 | } |
5278 | else | |
5279 | { | |
5280 | if (this->plt_ == NULL) | |
40b469d7 | 5281 | this->make_plt_section(symtab, layout); |
03e25981 | 5282 | this->plt_->add_entry(gsym); |
e5d5f5ed | 5283 | } |
e5d5f5ed | 5284 | } |
42cacb20 | 5285 | |
e5d5f5ed | 5286 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 5287 | |
e5d5f5ed AM |
5288 | template<int size, bool big_endian> |
5289 | void | |
5290 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 5291 | Symbol_table* symtab, |
e5d5f5ed | 5292 | Layout* layout, |
ec661b9d AM |
5293 | Sized_relobj_file<size, big_endian>* relobj, |
5294 | unsigned int r_sym) | |
e5d5f5ed AM |
5295 | { |
5296 | if (this->iplt_ == NULL) | |
40b469d7 | 5297 | this->make_iplt_section(symtab, layout); |
03e25981 | 5298 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
5299 | } |
5300 | ||
0e70b911 CC |
5301 | // Return the number of entries in the PLT. |
5302 | ||
5303 | template<int size, bool big_endian> | |
5304 | unsigned int | |
5305 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
5306 | { | |
5307 | if (this->plt_ == NULL) | |
5308 | return 0; | |
b3ccdeb5 | 5309 | return this->plt_->entry_count(); |
0e70b911 CC |
5310 | } |
5311 | ||
dd93cd0a | 5312 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
5313 | |
5314 | template<int size, bool big_endian> | |
5315 | unsigned int | |
dd93cd0a | 5316 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
5317 | Symbol_table* symtab, |
5318 | Layout* layout, | |
5319 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 5320 | { |
dd93cd0a | 5321 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
5322 | { |
5323 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
5324 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
5325 | Output_data_got_powerpc<size, big_endian>* got |
5326 | = this->got_section(symtab, layout); | |
5327 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
5328 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
5329 | got_offset, 0); | |
dd93cd0a | 5330 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 5331 | } |
dd93cd0a | 5332 | return this->tlsld_got_offset_; |
42cacb20 DE |
5333 | } |
5334 | ||
95a2c8d6 RS |
5335 | // Get the Reference_flags for a particular relocation. |
5336 | ||
5337 | template<int size, bool big_endian> | |
5338 | int | |
88b8e639 AM |
5339 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
5340 | unsigned int r_type, | |
5341 | const Target_powerpc* target) | |
95a2c8d6 | 5342 | { |
88b8e639 AM |
5343 | int ref = 0; |
5344 | ||
95a2c8d6 RS |
5345 | switch (r_type) |
5346 | { | |
5347 | case elfcpp::R_POWERPC_NONE: | |
5348 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5349 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
5350 | case elfcpp::R_PPC64_TOC: | |
5351 | // No symbol reference. | |
88b8e639 | 5352 | break; |
95a2c8d6 | 5353 | |
dd93cd0a AM |
5354 | case elfcpp::R_PPC64_ADDR64: |
5355 | case elfcpp::R_PPC64_UADDR64: | |
5356 | case elfcpp::R_POWERPC_ADDR32: | |
5357 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 5358 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 5359 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
5360 | case elfcpp::R_POWERPC_ADDR16_LO: |
5361 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5362 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
5363 | ref = Symbol::ABSOLUTE_REF; |
5364 | break; | |
95a2c8d6 | 5365 | |
dd93cd0a AM |
5366 | case elfcpp::R_POWERPC_ADDR24: |
5367 | case elfcpp::R_POWERPC_ADDR14: | |
5368 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5369 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
5370 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
5371 | break; | |
dd93cd0a | 5372 | |
e5d5f5ed | 5373 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 5374 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 5375 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
5376 | case elfcpp::R_POWERPC_REL16: |
5377 | case elfcpp::R_POWERPC_REL16_LO: | |
5378 | case elfcpp::R_POWERPC_REL16_HI: | |
5379 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
5380 | ref = Symbol::RELATIVE_REF; |
5381 | break; | |
95a2c8d6 | 5382 | |
dd93cd0a | 5383 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 5384 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
5385 | case elfcpp::R_POWERPC_REL14: |
5386 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5387 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
5388 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
5389 | break; | |
95a2c8d6 RS |
5390 | |
5391 | case elfcpp::R_POWERPC_GOT16: | |
5392 | case elfcpp::R_POWERPC_GOT16_LO: | |
5393 | case elfcpp::R_POWERPC_GOT16_HI: | |
5394 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
5395 | case elfcpp::R_PPC64_GOT16_DS: |
5396 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
5397 | case elfcpp::R_PPC64_TOC16: |
5398 | case elfcpp::R_PPC64_TOC16_LO: | |
5399 | case elfcpp::R_PPC64_TOC16_HI: | |
5400 | case elfcpp::R_PPC64_TOC16_HA: | |
5401 | case elfcpp::R_PPC64_TOC16_DS: | |
5402 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
32d849b3 | 5403 | ref = Symbol::RELATIVE_REF; |
88b8e639 | 5404 | break; |
95a2c8d6 RS |
5405 | |
5406 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5407 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
5408 | ref = Symbol::TLS_REF; |
5409 | break; | |
95a2c8d6 RS |
5410 | |
5411 | case elfcpp::R_POWERPC_COPY: | |
5412 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5413 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5414 | case elfcpp::R_POWERPC_RELATIVE: | |
5415 | case elfcpp::R_POWERPC_DTPMOD: | |
5416 | default: | |
5417 | // Not expected. We will give an error later. | |
88b8e639 | 5418 | break; |
95a2c8d6 | 5419 | } |
88b8e639 AM |
5420 | |
5421 | if (size == 64 && target->abiversion() < 2) | |
5422 | ref |= Symbol::FUNC_DESC_ABI; | |
5423 | return ref; | |
95a2c8d6 RS |
5424 | } |
5425 | ||
42cacb20 DE |
5426 | // Report an unsupported relocation against a local symbol. |
5427 | ||
5428 | template<int size, bool big_endian> | |
5429 | void | |
5430 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
5431 | Sized_relobj_file<size, big_endian>* object, |
5432 | unsigned int r_type) | |
42cacb20 DE |
5433 | { |
5434 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
5435 | object->name().c_str(), r_type); | |
5436 | } | |
5437 | ||
5438 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
5439 | // dynamic linker does not support it, issue an error. | |
5440 | ||
5441 | template<int size, bool big_endian> | |
5442 | void | |
5443 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
5444 | unsigned int r_type) | |
5445 | { | |
5446 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
5447 | ||
5448 | // These are the relocation types supported by glibc for both 32-bit | |
5449 | // and 64-bit powerpc. | |
5450 | switch (r_type) | |
5451 | { | |
3ea0a085 | 5452 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
5453 | case elfcpp::R_POWERPC_RELATIVE: |
5454 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5455 | case elfcpp::R_POWERPC_DTPMOD: | |
5456 | case elfcpp::R_POWERPC_DTPREL: | |
5457 | case elfcpp::R_POWERPC_TPREL: | |
5458 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5459 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 5460 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 5461 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 5462 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 5463 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
5464 | case elfcpp::R_POWERPC_ADDR16: |
5465 | case elfcpp::R_POWERPC_UADDR16: | |
5466 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5467 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5468 | case elfcpp::R_POWERPC_ADDR16_HA: | |
5469 | case elfcpp::R_POWERPC_ADDR14: | |
5470 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5471 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5472 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 5473 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
5474 | case elfcpp::R_POWERPC_TPREL16: |
5475 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5476 | case elfcpp::R_POWERPC_TPREL16_HI: | |
5477 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
5478 | return; |
5479 | ||
5480 | default: | |
5481 | break; | |
5482 | } | |
5483 | ||
5484 | if (size == 64) | |
5485 | { | |
5486 | switch (r_type) | |
5487 | { | |
5488 | // These are the relocation types supported only on 64-bit. | |
5489 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 5490 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 5491 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 5492 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 5493 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
5494 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5495 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
5496 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5497 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5498 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5499 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 5500 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
5501 | case elfcpp::R_POWERPC_ADDR30: |
5502 | case elfcpp::R_PPC64_TPREL16_DS: | |
5503 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5504 | case elfcpp::R_PPC64_TPREL16_HIGH: |
5505 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
5506 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
5507 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
5508 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
5509 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
5510 | return; |
5511 | ||
5512 | default: | |
5513 | break; | |
5514 | } | |
5515 | } | |
5516 | else | |
5517 | { | |
5518 | switch (r_type) | |
5519 | { | |
5520 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
5521 | // ??? glibc ld.so doesn't need to support these. |
5522 | case elfcpp::R_POWERPC_DTPREL16: | |
5523 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5524 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5525 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
5526 | return; | |
42cacb20 DE |
5527 | |
5528 | default: | |
5529 | break; | |
5530 | } | |
5531 | } | |
5532 | ||
5533 | // This prevents us from issuing more than one error per reloc | |
5534 | // section. But we can still wind up issuing more than one | |
5535 | // error per object file. | |
5536 | if (this->issued_non_pic_error_) | |
5537 | return; | |
33aea2fd | 5538 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
5539 | object->error(_("requires unsupported dynamic reloc; " |
5540 | "recompile with -fPIC")); | |
5541 | this->issued_non_pic_error_ = true; | |
5542 | return; | |
5543 | } | |
5544 | ||
e5d5f5ed AM |
5545 | // Return whether we need to make a PLT entry for a relocation of the |
5546 | // given type against a STT_GNU_IFUNC symbol. | |
5547 | ||
5548 | template<int size, bool big_endian> | |
5549 | bool | |
5550 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 5551 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 5552 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
5553 | unsigned int r_type, |
5554 | bool report_err) | |
e5d5f5ed | 5555 | { |
c9824451 AM |
5556 | // In non-pic code any reference will resolve to the plt call stub |
5557 | // for the ifunc symbol. | |
9055360d AM |
5558 | if ((size == 32 || target->abiversion() >= 2) |
5559 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
5560 | return true; |
5561 | ||
e5d5f5ed AM |
5562 | switch (r_type) |
5563 | { | |
b3ccdeb5 | 5564 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
5565 | case elfcpp::R_POWERPC_ADDR32: |
5566 | case elfcpp::R_POWERPC_UADDR32: | |
5567 | if (size == 32) | |
b3ccdeb5 | 5568 | return false; |
e5d5f5ed AM |
5569 | break; |
5570 | ||
5571 | case elfcpp::R_PPC64_ADDR64: | |
5572 | case elfcpp::R_PPC64_UADDR64: | |
5573 | if (size == 64) | |
b3ccdeb5 | 5574 | return false; |
e5d5f5ed AM |
5575 | break; |
5576 | ||
b3ccdeb5 | 5577 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
5578 | case elfcpp::R_POWERPC_GOT16: |
5579 | case elfcpp::R_POWERPC_GOT16_LO: | |
5580 | case elfcpp::R_POWERPC_GOT16_HI: | |
5581 | case elfcpp::R_POWERPC_GOT16_HA: | |
5582 | case elfcpp::R_PPC64_GOT16_DS: | |
5583 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 5584 | return false; |
e5d5f5ed | 5585 | |
b3ccdeb5 | 5586 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
5587 | case elfcpp::R_POWERPC_ADDR24: |
5588 | case elfcpp::R_POWERPC_ADDR14: | |
5589 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5590 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5591 | case elfcpp::R_POWERPC_REL24: | |
5592 | case elfcpp::R_PPC_PLTREL24: | |
5593 | case elfcpp::R_POWERPC_REL14: | |
5594 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5595 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
5596 | return true; | |
5597 | ||
5598 | default: | |
5599 | break; | |
5600 | } | |
5601 | ||
5602 | // Anything else is a problem. | |
5603 | // If we are building a static executable, the libc startup function | |
5604 | // responsible for applying indirect function relocations is going | |
5605 | // to complain about the reloc type. | |
5606 | // If we are building a dynamic executable, we will have a text | |
5607 | // relocation. The dynamic loader will set the text segment | |
5608 | // writable and non-executable to apply text relocations. So we'll | |
5609 | // segfault when trying to run the indirection function to resolve | |
5610 | // the reloc. | |
b3ccdeb5 AM |
5611 | if (report_err) |
5612 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
5613 | object->name().c_str(), r_type); |
5614 | return false; | |
5615 | } | |
5616 | ||
42cacb20 DE |
5617 | // Scan a relocation for a local symbol. |
5618 | ||
5619 | template<int size, bool big_endian> | |
5620 | inline void | |
5621 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
5622 | Symbol_table* symtab, |
5623 | Layout* layout, | |
5624 | Target_powerpc<size, big_endian>* target, | |
5625 | Sized_relobj_file<size, big_endian>* object, | |
5626 | unsigned int data_shndx, | |
5627 | Output_section* output_section, | |
5628 | const elfcpp::Rela<size, big_endian>& reloc, | |
5629 | unsigned int r_type, | |
e5d5f5ed | 5630 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 5631 | bool is_discarded) |
42cacb20 | 5632 | { |
e3deeb9c AM |
5633 | this->maybe_skip_tls_get_addr_call(r_type, NULL); |
5634 | ||
5635 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5636 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5637 | { | |
5638 | this->expect_tls_get_addr_call(); | |
5639 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5640 | if (tls_type != tls::TLSOPT_NONE) | |
5641 | this->skip_next_tls_get_addr_call(); | |
5642 | } | |
5643 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5644 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5645 | { | |
5646 | this->expect_tls_get_addr_call(); | |
5647 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5648 | if (tls_type != tls::TLSOPT_NONE) | |
5649 | this->skip_next_tls_get_addr_call(); | |
5650 | } | |
5651 | ||
dd93cd0a AM |
5652 | Powerpc_relobj<size, big_endian>* ppc_object |
5653 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
5654 | ||
bfdfa4cd AM |
5655 | if (is_discarded) |
5656 | { | |
5657 | if (size == 64 | |
5658 | && data_shndx == ppc_object->opd_shndx() | |
5659 | && r_type == elfcpp::R_PPC64_ADDR64) | |
5660 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
5661 | return; | |
5662 | } | |
5663 | ||
e5d5f5ed AM |
5664 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
5665 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 5666 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 5667 | { |
ec661b9d AM |
5668 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
5669 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5670 | r_type, r_sym, reloc.get_r_addend()); | |
5671 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 5672 | } |
e5d5f5ed | 5673 | |
42cacb20 DE |
5674 | switch (r_type) |
5675 | { | |
5676 | case elfcpp::R_POWERPC_NONE: | |
5677 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5678 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6ce78956 | 5679 | case elfcpp::R_PPC64_TOCSAVE: |
7404fe1b | 5680 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 5681 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
5682 | break; |
5683 | ||
5684 | case elfcpp::R_PPC64_TOC: | |
5685 | { | |
5686 | Output_data_got_powerpc<size, big_endian>* got | |
5687 | = target->got_section(symtab, layout); | |
5688 | if (parameters->options().output_is_position_independent()) | |
5689 | { | |
bfdfa4cd AM |
5690 | Address off = reloc.get_r_offset(); |
5691 | if (size == 64 | |
9055360d | 5692 | && target->abiversion() < 2 |
bfdfa4cd AM |
5693 | && data_shndx == ppc_object->opd_shndx() |
5694 | && ppc_object->get_opd_discard(off - 8)) | |
5695 | break; | |
5696 | ||
dd93cd0a | 5697 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 5698 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
5699 | rela_dyn->add_output_section_relative(got->output_section(), |
5700 | elfcpp::R_POWERPC_RELATIVE, | |
5701 | output_section, | |
bfdfa4cd AM |
5702 | object, data_shndx, off, |
5703 | symobj->toc_base_offset()); | |
dd93cd0a AM |
5704 | } |
5705 | } | |
42cacb20 DE |
5706 | break; |
5707 | ||
5708 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 5709 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 5710 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
5711 | case elfcpp::R_POWERPC_UADDR32: |
5712 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 5713 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 5714 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
5715 | case elfcpp::R_POWERPC_ADDR16_HI: |
5716 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 5717 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
5718 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5719 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
5720 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5721 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5722 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5723 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
5724 | case elfcpp::R_PPC64_ADDR16_DS: | |
5725 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
5726 | case elfcpp::R_POWERPC_ADDR14: | |
5727 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5728 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
5729 | // If building a shared library (or a position-independent |
5730 | // executable), we need to create a dynamic relocation for | |
5731 | // this location. | |
c9824451 | 5732 | if (parameters->options().output_is_position_independent() |
9055360d | 5733 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 5734 | { |
b3ccdeb5 AM |
5735 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5736 | is_ifunc); | |
1f98a074 | 5737 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
5738 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
5739 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 5740 | { |
b3ccdeb5 AM |
5741 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
5742 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5743 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
5744 | output_section, data_shndx, |
5745 | reloc.get_r_offset(), | |
c9824451 | 5746 | reloc.get_r_addend(), false); |
2e702c99 | 5747 | } |
1f98a074 | 5748 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 5749 | { |
dd93cd0a | 5750 | check_non_pic(object, r_type); |
dd93cd0a AM |
5751 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
5752 | data_shndx, reloc.get_r_offset(), | |
5753 | reloc.get_r_addend()); | |
2e702c99 | 5754 | } |
1f98a074 AM |
5755 | else |
5756 | { | |
5757 | gold_assert(lsym.get_st_value() == 0); | |
5758 | unsigned int shndx = lsym.get_st_shndx(); | |
5759 | bool is_ordinary; | |
5760 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
5761 | &is_ordinary); | |
5762 | if (!is_ordinary) | |
5763 | object->error(_("section symbol %u has bad shndx %u"), | |
5764 | r_sym, shndx); | |
5765 | else | |
5766 | rela_dyn->add_local_section(object, shndx, r_type, | |
5767 | output_section, data_shndx, | |
5768 | reloc.get_r_offset()); | |
5769 | } | |
2e702c99 | 5770 | } |
42cacb20 DE |
5771 | break; |
5772 | ||
5773 | case elfcpp::R_POWERPC_REL24: | |
c9824451 | 5774 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 5775 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
5776 | case elfcpp::R_POWERPC_REL14: |
5777 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5778 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 5779 | if (!is_ifunc) |
0e123f69 AM |
5780 | { |
5781 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
5782 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5783 | r_type, r_sym, reloc.get_r_addend()); | |
5784 | } | |
ec661b9d AM |
5785 | break; |
5786 | ||
5787 | case elfcpp::R_PPC64_REL64: | |
5788 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 5789 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 5790 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 5791 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 5792 | case elfcpp::R_POWERPC_REL16_HA: |
a680de9a | 5793 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 5794 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 5795 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 5796 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 5797 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
5798 | case elfcpp::R_PPC64_SECTOFF_DS: |
5799 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
5800 | case elfcpp::R_POWERPC_TPREL16: | |
5801 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5802 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 5803 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
5804 | case elfcpp::R_PPC64_TPREL16_DS: |
5805 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
5806 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
5807 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 5808 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 5809 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 5810 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 5811 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
5812 | case elfcpp::R_POWERPC_DTPREL16: |
5813 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5814 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5815 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
5816 | case elfcpp::R_PPC64_DTPREL16_DS: |
5817 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5818 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
5819 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
5820 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
5821 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
5822 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
5823 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
5824 | case elfcpp::R_PPC64_TLSGD: |
5825 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 5826 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
5827 | break; |
5828 | ||
5829 | case elfcpp::R_POWERPC_GOT16: | |
5830 | case elfcpp::R_POWERPC_GOT16_LO: | |
5831 | case elfcpp::R_POWERPC_GOT16_HI: | |
5832 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
5833 | case elfcpp::R_PPC64_GOT16_DS: |
5834 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 5835 | { |
c9269dff | 5836 | // The symbol requires a GOT entry. |
dd93cd0a AM |
5837 | Output_data_got_powerpc<size, big_endian>* got |
5838 | = target->got_section(symtab, layout); | |
5839 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 5840 | |
e5d5f5ed | 5841 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 5842 | { |
b01a4b04 AM |
5843 | if (is_ifunc |
5844 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
5845 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
5846 | else | |
5847 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
5848 | } | |
5849 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
5850 | { | |
5851 | // If we are generating a shared object or a pie, this | |
5852 | // symbol's GOT entry will be set by a dynamic relocation. | |
5853 | unsigned int off; | |
5854 | off = got->add_constant(0); | |
5855 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 5856 | |
b3ccdeb5 AM |
5857 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5858 | is_ifunc); | |
5859 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
5860 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5861 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 5862 | got, off, 0, false); |
2e702c99 | 5863 | } |
42cacb20 DE |
5864 | } |
5865 | break; | |
5866 | ||
cf43a2fe AM |
5867 | case elfcpp::R_PPC64_TOC16: |
5868 | case elfcpp::R_PPC64_TOC16_LO: | |
5869 | case elfcpp::R_PPC64_TOC16_HI: | |
5870 | case elfcpp::R_PPC64_TOC16_HA: | |
5871 | case elfcpp::R_PPC64_TOC16_DS: | |
5872 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
5873 | // We need a GOT section. |
5874 | target->got_section(symtab, layout); | |
5875 | break; | |
5876 | ||
dd93cd0a AM |
5877 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
5878 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
5879 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
5880 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
5881 | { | |
5882 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5883 | if (tls_type == tls::TLSOPT_NONE) | |
5884 | { | |
5885 | Output_data_got_powerpc<size, big_endian>* got | |
5886 | = target->got_section(symtab, layout); | |
5887 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
5888 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
5889 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
5890 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
5891 | } |
5892 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5893 | { | |
5894 | // no GOT relocs needed for Local Exec. | |
5895 | } | |
5896 | else | |
5897 | gold_unreachable(); | |
5898 | } | |
42cacb20 DE |
5899 | break; |
5900 | ||
dd93cd0a AM |
5901 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
5902 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
5903 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
5904 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
5905 | { | |
5906 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5907 | if (tls_type == tls::TLSOPT_NONE) | |
5908 | target->tlsld_got_offset(symtab, layout, object); | |
5909 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5910 | { | |
5911 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
5912 | if (parameters->options().emit_relocs()) |
5913 | { | |
5914 | Output_section* os = layout->tls_segment()->first_section(); | |
5915 | gold_assert(os != NULL); | |
5916 | os->set_needs_symtab_index(); | |
5917 | } | |
dd93cd0a AM |
5918 | } |
5919 | else | |
5920 | gold_unreachable(); | |
5921 | } | |
42cacb20 | 5922 | break; |
42cacb20 | 5923 | |
dd93cd0a AM |
5924 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
5925 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
5926 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
5927 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
5928 | { | |
5929 | Output_data_got_powerpc<size, big_endian>* got | |
5930 | = target->got_section(symtab, layout); | |
5931 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 5932 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
5933 | } |
5934 | break; | |
42cacb20 | 5935 | |
dd93cd0a AM |
5936 | case elfcpp::R_POWERPC_GOT_TPREL16: |
5937 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
5938 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
5939 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
5940 | { | |
5941 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
5942 | if (tls_type == tls::TLSOPT_NONE) | |
5943 | { | |
dd93cd0a | 5944 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
5945 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
5946 | { | |
5947 | Output_data_got_powerpc<size, big_endian>* got | |
5948 | = target->got_section(symtab, layout); | |
5949 | unsigned int off = got->add_constant(0); | |
5950 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
5951 | ||
5952 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
5953 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
5954 | elfcpp::R_POWERPC_TPREL, | |
5955 | got, off, 0); | |
5956 | } | |
dd93cd0a AM |
5957 | } |
5958 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5959 | { | |
5960 | // no GOT relocs needed for Local Exec. | |
5961 | } | |
5962 | else | |
5963 | gold_unreachable(); | |
5964 | } | |
5965 | break; | |
5966 | ||
5967 | default: | |
5968 | unsupported_reloc_local(object, r_type); | |
5969 | break; | |
5970 | } | |
d8f5a274 AM |
5971 | |
5972 | switch (r_type) | |
5973 | { | |
5974 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
5975 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
5976 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5977 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
5978 | case elfcpp::R_POWERPC_GOT16: | |
5979 | case elfcpp::R_PPC64_GOT16_DS: | |
5980 | case elfcpp::R_PPC64_TOC16: | |
5981 | case elfcpp::R_PPC64_TOC16_DS: | |
5982 | ppc_object->set_has_small_toc_reloc(); | |
5983 | default: | |
5984 | break; | |
5985 | } | |
dd93cd0a AM |
5986 | } |
5987 | ||
5988 | // Report an unsupported relocation against a global symbol. | |
5989 | ||
5990 | template<int size, bool big_endian> | |
5991 | void | |
5992 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
5993 | Sized_relobj_file<size, big_endian>* object, | |
5994 | unsigned int r_type, | |
5995 | Symbol* gsym) | |
5996 | { | |
42cacb20 DE |
5997 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
5998 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
5999 | } | |
6000 | ||
6001 | // Scan a relocation for a global symbol. | |
6002 | ||
6003 | template<int size, bool big_endian> | |
6004 | inline void | |
6005 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
6006 | Symbol_table* symtab, |
6007 | Layout* layout, | |
6008 | Target_powerpc<size, big_endian>* target, | |
6009 | Sized_relobj_file<size, big_endian>* object, | |
6010 | unsigned int data_shndx, | |
6011 | Output_section* output_section, | |
6012 | const elfcpp::Rela<size, big_endian>& reloc, | |
6013 | unsigned int r_type, | |
6014 | Symbol* gsym) | |
42cacb20 | 6015 | { |
e3deeb9c AM |
6016 | if (this->maybe_skip_tls_get_addr_call(r_type, gsym) == Track_tls::SKIP) |
6017 | return; | |
6018 | ||
6019 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
6020 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
6021 | { | |
6022 | this->expect_tls_get_addr_call(); | |
6023 | const bool final = gsym->final_value_is_known(); | |
6024 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
6025 | if (tls_type != tls::TLSOPT_NONE) | |
6026 | this->skip_next_tls_get_addr_call(); | |
6027 | } | |
6028 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
6029 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
6030 | { | |
6031 | this->expect_tls_get_addr_call(); | |
6032 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6033 | if (tls_type != tls::TLSOPT_NONE) | |
6034 | this->skip_next_tls_get_addr_call(); | |
6035 | } | |
6036 | ||
dd93cd0a AM |
6037 | Powerpc_relobj<size, big_endian>* ppc_object |
6038 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6039 | ||
e5d5f5ed | 6040 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 6041 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
6042 | bool pushed_ifunc = false; |
6043 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d | 6044 | { |
0e123f69 | 6045 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
ec661b9d | 6046 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 6047 | r_type, r_sym, reloc.get_r_addend()); |
ec661b9d | 6048 | target->make_plt_entry(symtab, layout, gsym); |
9055360d | 6049 | pushed_ifunc = true; |
ec661b9d | 6050 | } |
e5d5f5ed | 6051 | |
42cacb20 DE |
6052 | switch (r_type) |
6053 | { | |
6054 | case elfcpp::R_POWERPC_NONE: | |
6055 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
6056 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 6057 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 6058 | case elfcpp::R_POWERPC_TLS: |
549dba71 | 6059 | case elfcpp::R_PPC64_ENTRY: |
dd93cd0a AM |
6060 | break; |
6061 | ||
6062 | case elfcpp::R_PPC64_TOC: | |
6063 | { | |
6064 | Output_data_got_powerpc<size, big_endian>* got | |
6065 | = target->got_section(symtab, layout); | |
6066 | if (parameters->options().output_is_position_independent()) | |
6067 | { | |
bfdfa4cd AM |
6068 | Address off = reloc.get_r_offset(); |
6069 | if (size == 64 | |
6070 | && data_shndx == ppc_object->opd_shndx() | |
6071 | && ppc_object->get_opd_discard(off - 8)) | |
6072 | break; | |
6073 | ||
dd93cd0a AM |
6074 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6075 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
6076 | if (data_shndx != ppc_object->opd_shndx()) | |
6077 | symobj = static_cast | |
6078 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
6079 | rela_dyn->add_output_section_relative(got->output_section(), | |
6080 | elfcpp::R_POWERPC_RELATIVE, | |
6081 | output_section, | |
bfdfa4cd | 6082 | object, data_shndx, off, |
dd93cd0a AM |
6083 | symobj->toc_base_offset()); |
6084 | } | |
6085 | } | |
42cacb20 DE |
6086 | break; |
6087 | ||
c9269dff | 6088 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 6089 | if (size == 64 |
9055360d | 6090 | && target->abiversion() < 2 |
bfdfa4cd AM |
6091 | && data_shndx == ppc_object->opd_shndx() |
6092 | && (gsym->is_defined_in_discarded_section() | |
6093 | || gsym->object() != object)) | |
6094 | { | |
6095 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
6096 | break; | |
6097 | } | |
d8e90251 | 6098 | // Fall through. |
dd93cd0a | 6099 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 6100 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
6101 | case elfcpp::R_POWERPC_UADDR32: |
6102 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
6103 | case elfcpp::R_POWERPC_ADDR16: |
6104 | case elfcpp::R_POWERPC_ADDR16_LO: | |
6105 | case elfcpp::R_POWERPC_ADDR16_HI: | |
6106 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 6107 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
6108 | case elfcpp::R_PPC64_ADDR16_HIGH: |
6109 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6110 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6111 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6112 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6113 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6114 | case elfcpp::R_PPC64_ADDR16_DS: | |
6115 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6116 | case elfcpp::R_POWERPC_ADDR14: | |
6117 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6118 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 6119 | { |
c9269dff AM |
6120 | // Make a PLT entry if necessary. |
6121 | if (gsym->needs_plt_entry()) | |
6122 | { | |
9055360d AM |
6123 | // Since this is not a PC-relative relocation, we may be |
6124 | // taking the address of a function. In that case we need to | |
6125 | // set the entry in the dynamic symbol table to the address of | |
6126 | // the PLT call stub. | |
6127 | bool need_ifunc_plt = false; | |
6128 | if ((size == 32 || target->abiversion() >= 2) | |
6129 | && gsym->is_from_dynobj() | |
6130 | && !parameters->options().output_is_position_independent()) | |
6131 | { | |
6132 | gsym->set_needs_dynsym_value(); | |
6133 | need_ifunc_plt = true; | |
6134 | } | |
6135 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 | 6136 | { |
0e123f69 | 6137 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 6138 | target->push_branch(ppc_object, data_shndx, |
0e123f69 | 6139 | reloc.get_r_offset(), r_type, r_sym, |
b3ccdeb5 AM |
6140 | reloc.get_r_addend()); |
6141 | target->make_plt_entry(symtab, layout, gsym); | |
6142 | } | |
c9269dff AM |
6143 | } |
6144 | // Make a dynamic relocation if necessary. | |
88b8e639 | 6145 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 6146 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 6147 | { |
a82bef93 ST |
6148 | if (!parameters->options().output_is_position_independent() |
6149 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
6150 | { |
6151 | target->copy_reloc(symtab, layout, object, | |
6152 | data_shndx, output_section, gsym, reloc); | |
6153 | } | |
9055360d AM |
6154 | else if ((((size == 32 |
6155 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
6156 | || (size == 64 | |
6157 | && r_type == elfcpp::R_PPC64_ADDR64 | |
6158 | && target->abiversion() >= 2)) | |
627b30b7 AM |
6159 | && gsym->can_use_relative_reloc(false) |
6160 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
6161 | && parameters->options().shared())) | |
6162 | || (size == 64 | |
6163 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 6164 | && target->abiversion() < 2 |
627b30b7 AM |
6165 | && (gsym->can_use_relative_reloc(false) |
6166 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 6167 | { |
b3ccdeb5 AM |
6168 | Reloc_section* rela_dyn |
6169 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6170 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6171 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6172 | rela_dyn->add_symbolless_global_addend( |
6173 | gsym, dynrel, output_section, object, data_shndx, | |
6174 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
6175 | } |
6176 | else | |
6177 | { | |
b3ccdeb5 AM |
6178 | Reloc_section* rela_dyn |
6179 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 6180 | check_non_pic(object, r_type); |
dd93cd0a AM |
6181 | rela_dyn->add_global(gsym, r_type, output_section, |
6182 | object, data_shndx, | |
6183 | reloc.get_r_offset(), | |
6184 | reloc.get_r_addend()); | |
2e702c99 RM |
6185 | } |
6186 | } | |
42cacb20 DE |
6187 | } |
6188 | break; | |
6189 | ||
cf43a2fe | 6190 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6191 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
6192 | if (!is_ifunc) |
6193 | { | |
0e123f69 | 6194 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
b3ccdeb5 | 6195 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), |
0e123f69 | 6196 | r_type, r_sym, reloc.get_r_addend()); |
b3ccdeb5 AM |
6197 | if (gsym->needs_plt_entry() |
6198 | || (!gsym->final_value_is_known() | |
6199 | && (gsym->is_undefined() | |
6200 | || gsym->is_from_dynobj() | |
6201 | || gsym->is_preemptible()))) | |
6202 | target->make_plt_entry(symtab, layout, gsym); | |
6203 | } | |
d8e90251 | 6204 | // Fall through. |
42cacb20 | 6205 | |
3ea0a085 | 6206 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6207 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 6208 | // Make a dynamic relocation if necessary. |
88b8e639 | 6209 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 6210 | { |
a82bef93 ST |
6211 | if (!parameters->options().output_is_position_independent() |
6212 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
6213 | { |
6214 | target->copy_reloc(symtab, layout, object, | |
6215 | data_shndx, output_section, gsym, | |
6216 | reloc); | |
6217 | } | |
6218 | else | |
6219 | { | |
b3ccdeb5 AM |
6220 | Reloc_section* rela_dyn |
6221 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
6222 | check_non_pic(object, r_type); |
6223 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
6224 | data_shndx, reloc.get_r_offset(), | |
6225 | reloc.get_r_addend()); | |
6226 | } | |
6227 | } | |
6228 | break; | |
6229 | ||
ec661b9d AM |
6230 | case elfcpp::R_POWERPC_REL14: |
6231 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6232 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 | 6233 | if (!is_ifunc) |
0e123f69 AM |
6234 | { |
6235 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
6236 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6237 | r_type, r_sym, reloc.get_r_addend()); | |
6238 | } | |
ec661b9d AM |
6239 | break; |
6240 | ||
6ce78956 AM |
6241 | case elfcpp::R_POWERPC_REL16: |
6242 | case elfcpp::R_POWERPC_REL16_LO: | |
6243 | case elfcpp::R_POWERPC_REL16_HI: | |
6244 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 6245 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 6246 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6247 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6248 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6249 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6250 | case elfcpp::R_PPC64_SECTOFF_DS: |
6251 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6252 | case elfcpp::R_POWERPC_TPREL16: | |
6253 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6254 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6255 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6256 | case elfcpp::R_PPC64_TPREL16_DS: |
6257 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6258 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6259 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6260 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6261 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6262 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6263 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6264 | case elfcpp::R_POWERPC_DTPREL16: |
6265 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6266 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6267 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6268 | case elfcpp::R_PPC64_DTPREL16_DS: |
6269 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6270 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6271 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6272 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6273 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6274 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6275 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6276 | case elfcpp::R_PPC64_TLSGD: |
6277 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6278 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
6279 | break; |
6280 | ||
42cacb20 DE |
6281 | case elfcpp::R_POWERPC_GOT16: |
6282 | case elfcpp::R_POWERPC_GOT16_LO: | |
6283 | case elfcpp::R_POWERPC_GOT16_HI: | |
6284 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6285 | case elfcpp::R_PPC64_GOT16_DS: |
6286 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6287 | { |
c9269dff AM |
6288 | // The symbol requires a GOT entry. |
6289 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
6290 | |
6291 | got = target->got_section(symtab, layout); | |
2e702c99 | 6292 | if (gsym->final_value_is_known()) |
2e702c99 | 6293 | { |
b01a4b04 AM |
6294 | if (is_ifunc |
6295 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6296 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
6297 | else | |
6298 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
6299 | } | |
6300 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
6301 | { | |
6302 | // If we are generating a shared object or a pie, this | |
6303 | // symbol's GOT entry will be set by a dynamic relocation. | |
6304 | unsigned int off = got->add_constant(0); | |
6305 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
6306 | ||
b3ccdeb5 AM |
6307 | Reloc_section* rela_dyn |
6308 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6309 | ||
e5d5f5ed | 6310 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
6311 | && !((size == 32 |
6312 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
6313 | && gsym->visibility() == elfcpp::STV_PROTECTED |
6314 | && parameters->options().shared())) | |
2e702c99 | 6315 | { |
b3ccdeb5 AM |
6316 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6317 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6318 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
6319 | } | |
6320 | else | |
6321 | { | |
6322 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
6323 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 6324 | } |
2e702c99 | 6325 | } |
42cacb20 DE |
6326 | } |
6327 | break; | |
6328 | ||
cf43a2fe AM |
6329 | case elfcpp::R_PPC64_TOC16: |
6330 | case elfcpp::R_PPC64_TOC16_LO: | |
6331 | case elfcpp::R_PPC64_TOC16_HI: | |
6332 | case elfcpp::R_PPC64_TOC16_HA: | |
6333 | case elfcpp::R_PPC64_TOC16_DS: | |
6334 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6335 | // We need a GOT section. |
6336 | target->got_section(symtab, layout); | |
6337 | break; | |
6338 | ||
dd93cd0a AM |
6339 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6340 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6341 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6342 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6343 | { | |
6344 | const bool final = gsym->final_value_is_known(); | |
6345 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
6346 | if (tls_type == tls::TLSOPT_NONE) | |
6347 | { | |
6348 | Output_data_got_powerpc<size, big_endian>* got | |
6349 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
6350 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6351 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
6352 | elfcpp::R_POWERPC_DTPMOD, |
6353 | elfcpp::R_POWERPC_DTPREL); | |
6354 | } | |
6355 | else if (tls_type == tls::TLSOPT_TO_IE) | |
6356 | { | |
acc276d8 AM |
6357 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6358 | { | |
6359 | Output_data_got_powerpc<size, big_endian>* got | |
6360 | = target->got_section(symtab, layout); | |
6361 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6362 | if (gsym->is_undefined() | |
6363 | || gsym->is_from_dynobj()) | |
6364 | { | |
6365 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6366 | elfcpp::R_POWERPC_TPREL); | |
6367 | } | |
6368 | else | |
6369 | { | |
6370 | unsigned int off = got->add_constant(0); | |
6371 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6372 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6373 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6374 | got, off, 0); | |
6375 | } | |
6376 | } | |
dd93cd0a AM |
6377 | } |
6378 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6379 | { | |
6380 | // no GOT relocs needed for Local Exec. | |
6381 | } | |
6382 | else | |
6383 | gold_unreachable(); | |
6384 | } | |
42cacb20 DE |
6385 | break; |
6386 | ||
dd93cd0a AM |
6387 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6388 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6389 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6390 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6391 | { | |
6392 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6393 | if (tls_type == tls::TLSOPT_NONE) | |
6394 | target->tlsld_got_offset(symtab, layout, object); | |
6395 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6396 | { | |
6397 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6398 | if (parameters->options().emit_relocs()) |
6399 | { | |
6400 | Output_section* os = layout->tls_segment()->first_section(); | |
6401 | gold_assert(os != NULL); | |
6402 | os->set_needs_symtab_index(); | |
6403 | } | |
dd93cd0a AM |
6404 | } |
6405 | else | |
6406 | gold_unreachable(); | |
6407 | } | |
6408 | break; | |
6409 | ||
6410 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6411 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6412 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6413 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6414 | { | |
6415 | Output_data_got_powerpc<size, big_endian>* got | |
6416 | = target->got_section(symtab, layout); | |
bd73a62d AM |
6417 | if (!gsym->final_value_is_known() |
6418 | && (gsym->is_from_dynobj() | |
6419 | || gsym->is_undefined() | |
6420 | || gsym->is_preemptible())) | |
6421 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
6422 | target->rela_dyn_section(layout), | |
6423 | elfcpp::R_POWERPC_DTPREL); | |
6424 | else | |
6425 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
6426 | } |
6427 | break; | |
6428 | ||
6429 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6430 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6431 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
6432 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6433 | { | |
6434 | const bool final = gsym->final_value_is_known(); | |
6435 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
6436 | if (tls_type == tls::TLSOPT_NONE) | |
6437 | { | |
acc276d8 AM |
6438 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6439 | { | |
6440 | Output_data_got_powerpc<size, big_endian>* got | |
6441 | = target->got_section(symtab, layout); | |
6442 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6443 | if (gsym->is_undefined() | |
6444 | || gsym->is_from_dynobj()) | |
6445 | { | |
6446 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6447 | elfcpp::R_POWERPC_TPREL); | |
6448 | } | |
6449 | else | |
6450 | { | |
6451 | unsigned int off = got->add_constant(0); | |
6452 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6453 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6454 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6455 | got, off, 0); | |
6456 | } | |
6457 | } | |
dd93cd0a AM |
6458 | } |
6459 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6460 | { | |
6461 | // no GOT relocs needed for Local Exec. | |
6462 | } | |
6463 | else | |
6464 | gold_unreachable(); | |
6465 | } | |
42cacb20 DE |
6466 | break; |
6467 | ||
6468 | default: | |
6469 | unsupported_reloc_global(object, r_type, gsym); | |
6470 | break; | |
6471 | } | |
d8f5a274 AM |
6472 | |
6473 | switch (r_type) | |
6474 | { | |
6475 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
6476 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
6477 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6478 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6479 | case elfcpp::R_POWERPC_GOT16: | |
6480 | case elfcpp::R_PPC64_GOT16_DS: | |
6481 | case elfcpp::R_PPC64_TOC16: | |
6482 | case elfcpp::R_PPC64_TOC16_DS: | |
6483 | ppc_object->set_has_small_toc_reloc(); | |
6484 | default: | |
6485 | break; | |
6486 | } | |
42cacb20 DE |
6487 | } |
6488 | ||
6d03d481 ST |
6489 | // Process relocations for gc. |
6490 | ||
6491 | template<int size, bool big_endian> | |
6492 | void | |
6493 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
6494 | Symbol_table* symtab, |
6495 | Layout* layout, | |
6496 | Sized_relobj_file<size, big_endian>* object, | |
6497 | unsigned int data_shndx, | |
6498 | unsigned int, | |
6499 | const unsigned char* prelocs, | |
6500 | size_t reloc_count, | |
6501 | Output_section* output_section, | |
6502 | bool needs_special_offset_handling, | |
6503 | size_t local_symbol_count, | |
6504 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
6505 | { |
6506 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
6507 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
6508 | Classify_reloc; | |
6509 | ||
e81fea4d AM |
6510 | Powerpc_relobj<size, big_endian>* ppc_object |
6511 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6512 | if (size == 64) | |
6513 | ppc_object->set_opd_valid(); | |
6514 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
6515 | { | |
6516 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
6517 | for (p = ppc_object->access_from_map()->begin(); | |
6518 | p != ppc_object->access_from_map()->end(); | |
6519 | ++p) | |
6520 | { | |
6521 | Address dst_off = p->first; | |
6522 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
6523 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
6524 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
6525 | { | |
efc6fa12 | 6526 | Relobj* src_obj = s->first; |
e81fea4d AM |
6527 | unsigned int src_indx = s->second; |
6528 | symtab->gc()->add_reference(src_obj, src_indx, | |
6529 | ppc_object, dst_indx); | |
6530 | } | |
6531 | p->second.clear(); | |
6532 | } | |
6533 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 6534 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
6535 | // Don't look at .opd relocs as .opd will reference everything. |
6536 | return; | |
6537 | } | |
6d03d481 | 6538 | |
4d625b70 | 6539 | gold::gc_process_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
6d03d481 ST |
6540 | symtab, |
6541 | layout, | |
6542 | this, | |
6543 | object, | |
6544 | data_shndx, | |
6545 | prelocs, | |
6546 | reloc_count, | |
6547 | output_section, | |
6548 | needs_special_offset_handling, | |
6549 | local_symbol_count, | |
6550 | plocal_symbols); | |
6551 | } | |
6552 | ||
e81fea4d AM |
6553 | // Handle target specific gc actions when adding a gc reference from |
6554 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
6555 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
6556 | // section of a function descriptor. | |
6557 | ||
6558 | template<int size, bool big_endian> | |
6559 | void | |
6560 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
6561 | Symbol_table* symtab, | |
efc6fa12 | 6562 | Relobj* src_obj, |
e81fea4d | 6563 | unsigned int src_shndx, |
efc6fa12 | 6564 | Relobj* dst_obj, |
e81fea4d AM |
6565 | unsigned int dst_shndx, |
6566 | Address dst_off) const | |
6567 | { | |
6c77229c AM |
6568 | if (size != 64 || dst_obj->is_dynamic()) |
6569 | return; | |
6570 | ||
e81fea4d AM |
6571 | Powerpc_relobj<size, big_endian>* ppc_object |
6572 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 6573 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6574 | { |
6575 | if (ppc_object->opd_valid()) | |
6576 | { | |
6577 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
6578 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
6579 | } | |
6580 | else | |
6581 | { | |
6582 | // If we haven't run scan_opd_relocs, we must delay | |
6583 | // processing this function descriptor reference. | |
6584 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
6585 | } | |
6586 | } | |
6587 | } | |
6588 | ||
6589 | // Add any special sections for this symbol to the gc work list. | |
6590 | // For powerpc64, this adds the code section of a function | |
6591 | // descriptor. | |
6592 | ||
6593 | template<int size, bool big_endian> | |
6594 | void | |
6595 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
6596 | Symbol_table* symtab, | |
6597 | Symbol* sym) const | |
6598 | { | |
6599 | if (size == 64) | |
6600 | { | |
6601 | Powerpc_relobj<size, big_endian>* ppc_object | |
6602 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
6603 | bool is_ordinary; | |
6604 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 6605 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6606 | { |
6607 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
6608 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
6609 | if (ppc_object->opd_valid()) |
6610 | { | |
6611 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
6612 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
6613 | dst_indx)); | |
c6de8ed4 AM |
6614 | } |
6615 | else | |
6616 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
6617 | } |
6618 | } | |
6619 | } | |
6620 | ||
dc3714f3 AM |
6621 | // For a symbol location in .opd, set LOC to the location of the |
6622 | // function entry. | |
6623 | ||
6624 | template<int size, bool big_endian> | |
6625 | void | |
6626 | Target_powerpc<size, big_endian>::do_function_location( | |
6627 | Symbol_location* loc) const | |
6628 | { | |
a2d7bf59 | 6629 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
6630 | { |
6631 | if (loc->object->is_dynamic()) | |
6632 | { | |
6633 | Powerpc_dynobj<size, big_endian>* ppc_object | |
6634 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
6635 | if (loc->shndx == ppc_object->opd_shndx()) | |
6636 | { | |
6637 | Address dest_off; | |
6638 | Address off = loc->offset - ppc_object->opd_address(); | |
6639 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
6640 | loc->offset = dest_off; | |
6641 | } | |
6642 | } | |
6643 | else | |
6644 | { | |
6645 | const Powerpc_relobj<size, big_endian>* ppc_object | |
6646 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
6647 | if (loc->shndx == ppc_object->opd_shndx()) | |
6648 | { | |
6649 | Address dest_off; | |
6650 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
6651 | loc->offset = dest_off; | |
6652 | } | |
6653 | } | |
6654 | } | |
6655 | } | |
6656 | ||
bbec1a5d AM |
6657 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
6658 | // compiled with -fsplit-stack. The function calls non-split-stack | |
6659 | // code. Change the function to ensure it has enough stack space to | |
6660 | // call some random function. | |
6661 | ||
6662 | template<int size, bool big_endian> | |
6663 | void | |
6664 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
6665 | Relobj* object, | |
6666 | unsigned int shndx, | |
6667 | section_offset_type fnoffset, | |
6668 | section_size_type fnsize, | |
6e0813d3 CC |
6669 | const unsigned char* prelocs, |
6670 | size_t reloc_count, | |
bbec1a5d AM |
6671 | unsigned char* view, |
6672 | section_size_type view_size, | |
6673 | std::string* from, | |
6674 | std::string* to) const | |
6675 | { | |
6676 | // 32-bit not supported. | |
6677 | if (size == 32) | |
6678 | { | |
6679 | // warn | |
6680 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6e0813d3 CC |
6681 | prelocs, reloc_count, view, view_size, |
6682 | from, to); | |
bbec1a5d AM |
6683 | return; |
6684 | } | |
6685 | ||
6686 | // The function always starts with | |
6687 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
6688 | // addis %r12,%r1,-allocate@ha | |
6689 | // addi %r12,%r12,-allocate@l | |
6690 | // cmpld %r12,%r0 | |
6691 | // but note that the addis or addi may be replaced with a nop | |
6692 | ||
6693 | unsigned char *entry = view + fnoffset; | |
6694 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6695 | ||
6696 | if ((insn & 0xffff0000) == addis_2_12) | |
6697 | { | |
6698 | /* Skip ELFv2 global entry code. */ | |
6699 | entry += 8; | |
6700 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6701 | } | |
6702 | ||
6703 | unsigned char *pinsn = entry; | |
6704 | bool ok = false; | |
6705 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
6706 | if (insn == ld_private_ss) | |
6707 | { | |
6708 | int32_t allocate = 0; | |
6709 | while (1) | |
6710 | { | |
6711 | pinsn += 4; | |
6712 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
6713 | if ((insn & 0xffff0000) == addis_12_1) | |
6714 | allocate += (insn & 0xffff) << 16; | |
6715 | else if ((insn & 0xffff0000) == addi_12_1 | |
6716 | || (insn & 0xffff0000) == addi_12_12) | |
6717 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
6718 | else if (insn != nop) | |
6719 | break; | |
6720 | } | |
6721 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
6722 | { | |
6723 | int extra = parameters->options().split_stack_adjust_size(); | |
6724 | allocate -= extra; | |
6725 | if (allocate >= 0 || extra < 0) | |
6726 | { | |
6727 | object->error(_("split-stack stack size overflow at " | |
6728 | "section %u offset %0zx"), | |
6729 | shndx, static_cast<size_t>(fnoffset)); | |
6730 | return; | |
6731 | } | |
6732 | pinsn = entry + 4; | |
6733 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
6734 | if (insn != addis_12_1) | |
6735 | { | |
6736 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6737 | pinsn += 4; | |
6738 | insn = addi_12_12 | (allocate & 0xffff); | |
6739 | if (insn != addi_12_12) | |
6740 | { | |
6741 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6742 | pinsn += 4; | |
6743 | } | |
6744 | } | |
6745 | else | |
6746 | { | |
6747 | insn = addi_12_1 | (allocate & 0xffff); | |
6748 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6749 | pinsn += 4; | |
6750 | } | |
6751 | if (pinsn != entry + 12) | |
6752 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
6753 | ||
6754 | ok = true; | |
6755 | } | |
6756 | } | |
6757 | ||
6758 | if (!ok) | |
6759 | { | |
6760 | if (!object->has_no_split_stack()) | |
6761 | object->error(_("failed to match split-stack sequence at " | |
6762 | "section %u offset %0zx"), | |
6763 | shndx, static_cast<size_t>(fnoffset)); | |
6764 | } | |
6765 | } | |
6766 | ||
42cacb20 DE |
6767 | // Scan relocations for a section. |
6768 | ||
6769 | template<int size, bool big_endian> | |
6770 | void | |
6771 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
6772 | Symbol_table* symtab, |
6773 | Layout* layout, | |
6774 | Sized_relobj_file<size, big_endian>* object, | |
6775 | unsigned int data_shndx, | |
6776 | unsigned int sh_type, | |
6777 | const unsigned char* prelocs, | |
6778 | size_t reloc_count, | |
6779 | Output_section* output_section, | |
6780 | bool needs_special_offset_handling, | |
6781 | size_t local_symbol_count, | |
6782 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
6783 | { |
6784 | typedef Target_powerpc<size, big_endian> Powerpc; | |
4d625b70 CC |
6785 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
6786 | Classify_reloc; | |
42cacb20 DE |
6787 | |
6788 | if (sh_type == elfcpp::SHT_REL) | |
6789 | { | |
6790 | gold_error(_("%s: unsupported REL reloc section"), | |
6791 | object->name().c_str()); | |
6792 | return; | |
6793 | } | |
6794 | ||
4d625b70 | 6795 | gold::scan_relocs<size, big_endian, Powerpc, Scan, Classify_reloc>( |
42cacb20 DE |
6796 | symtab, |
6797 | layout, | |
6798 | this, | |
6799 | object, | |
6800 | data_shndx, | |
6801 | prelocs, | |
6802 | reloc_count, | |
6803 | output_section, | |
6804 | needs_special_offset_handling, | |
6805 | local_symbol_count, | |
6806 | plocal_symbols); | |
6807 | } | |
6808 | ||
ec4dbad3 AM |
6809 | // Functor class for processing the global symbol table. |
6810 | // Removes symbols defined on discarded opd entries. | |
6811 | ||
6812 | template<bool big_endian> | |
6813 | class Global_symbol_visitor_opd | |
6814 | { | |
6815 | public: | |
6816 | Global_symbol_visitor_opd() | |
6817 | { } | |
6818 | ||
6819 | void | |
6820 | operator()(Sized_symbol<64>* sym) | |
6821 | { | |
6822 | if (sym->has_symtab_index() | |
6823 | || sym->source() != Symbol::FROM_OBJECT | |
6824 | || !sym->in_real_elf()) | |
6825 | return; | |
6826 | ||
6c77229c AM |
6827 | if (sym->object()->is_dynamic()) |
6828 | return; | |
6829 | ||
ec4dbad3 AM |
6830 | Powerpc_relobj<64, big_endian>* symobj |
6831 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 6832 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
6833 | return; |
6834 | ||
6835 | bool is_ordinary; | |
6836 | unsigned int shndx = sym->shndx(&is_ordinary); | |
6837 | if (shndx == symobj->opd_shndx() | |
6838 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
6839 | { |
6840 | sym->set_undefined(); | |
e3ee8ed4 | 6841 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
6842 | sym->set_is_defined_in_discarded_section(); |
6843 | sym->set_symtab_index(-1U); | |
6844 | } | |
ec4dbad3 AM |
6845 | } |
6846 | }; | |
6847 | ||
f3a0ed29 AM |
6848 | template<int size, bool big_endian> |
6849 | void | |
6850 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
6851 | Layout* layout, | |
6852 | Symbol_table* symtab) | |
6853 | { | |
6854 | if (size == 64) | |
6855 | { | |
d49044c7 AM |
6856 | Output_data_save_res<size, big_endian>* savres |
6857 | = new Output_data_save_res<size, big_endian>(symtab); | |
6858 | this->savres_section_ = savres; | |
f3a0ed29 AM |
6859 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
6860 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
6861 | savres, ORDER_TEXT, false); | |
6862 | } | |
6863 | } | |
6864 | ||
d8f5a274 AM |
6865 | // Sort linker created .got section first (for the header), then input |
6866 | // sections belonging to files using small model code. | |
6867 | ||
6868 | template<bool big_endian> | |
6869 | class Sort_toc_sections | |
6870 | { | |
6871 | public: | |
6872 | bool | |
6873 | operator()(const Output_section::Input_section& is1, | |
6874 | const Output_section::Input_section& is2) const | |
6875 | { | |
6876 | if (!is1.is_input_section() && is2.is_input_section()) | |
6877 | return true; | |
6878 | bool small1 | |
6879 | = (is1.is_input_section() | |
6880 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
6881 | ->has_small_toc_reloc())); | |
6882 | bool small2 | |
6883 | = (is2.is_input_section() | |
6884 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
6885 | ->has_small_toc_reloc())); | |
6886 | return small1 && !small2; | |
6887 | } | |
6888 | }; | |
6889 | ||
42cacb20 DE |
6890 | // Finalize the sections. |
6891 | ||
6892 | template<int size, bool big_endian> | |
6893 | void | |
d5b40221 DK |
6894 | Target_powerpc<size, big_endian>::do_finalize_sections( |
6895 | Layout* layout, | |
f59f41f3 | 6896 | const Input_objects*, |
ec4dbad3 | 6897 | Symbol_table* symtab) |
42cacb20 | 6898 | { |
c9824451 AM |
6899 | if (parameters->doing_static_link()) |
6900 | { | |
6901 | // At least some versions of glibc elf-init.o have a strong | |
6902 | // reference to __rela_iplt marker syms. A weak ref would be | |
6903 | // better.. | |
6904 | if (this->iplt_ != NULL) | |
6905 | { | |
6906 | Reloc_section* rel = this->iplt_->rel_plt(); | |
6907 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
6908 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6909 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6910 | elfcpp::STV_HIDDEN, 0, false, true); | |
6911 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
6912 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6913 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6914 | elfcpp::STV_HIDDEN, 0, true, true); | |
6915 | } | |
6916 | else | |
6917 | { | |
6918 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
6919 | Symbol_table::PREDEFINED, 0, 0, | |
6920 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6921 | elfcpp::STV_HIDDEN, 0, true, false); | |
6922 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
6923 | Symbol_table::PREDEFINED, 0, 0, | |
6924 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6925 | elfcpp::STV_HIDDEN, 0, true, false); | |
6926 | } | |
6927 | } | |
6928 | ||
ec4dbad3 AM |
6929 | if (size == 64) |
6930 | { | |
6931 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
6932 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
6933 | |
6934 | if (!parameters->options().relocatable()) | |
6935 | { | |
6936 | this->define_save_restore_funcs(layout, symtab); | |
6937 | ||
6938 | // Annoyingly, we need to make these sections now whether or | |
6939 | // not we need them. If we delay until do_relax then we | |
6940 | // need to mess with the relaxation machinery checkpointing. | |
6941 | this->got_section(symtab, layout); | |
6942 | this->make_brlt_section(layout); | |
d8f5a274 AM |
6943 | |
6944 | if (parameters->options().toc_sort()) | |
6945 | { | |
6946 | Output_section* os = this->got_->output_section(); | |
6947 | if (os != NULL && os->input_sections().size() > 1) | |
6948 | std::stable_sort(os->input_sections().begin(), | |
6949 | os->input_sections().end(), | |
6950 | Sort_toc_sections<big_endian>()); | |
6951 | } | |
ec661b9d | 6952 | } |
ec4dbad3 AM |
6953 | } |
6954 | ||
42cacb20 | 6955 | // Fill in some more dynamic tags. |
c9269dff | 6956 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 6957 | if (odyn != NULL) |
cf43a2fe | 6958 | { |
c9824451 AM |
6959 | const Reloc_section* rel_plt = (this->plt_ == NULL |
6960 | ? NULL | |
6961 | : this->plt_->rel_plt()); | |
6962 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
6963 | this->rela_dyn_, true, size == 32); | |
6964 | ||
6965 | if (size == 32) | |
dd93cd0a | 6966 | { |
c9824451 AM |
6967 | if (this->got_ != NULL) |
6968 | { | |
6969 | this->got_->finalize_data_size(); | |
6970 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
6971 | this->got_, this->got_->g_o_t()); | |
6972 | } | |
dd93cd0a | 6973 | } |
c9824451 | 6974 | else |
dd93cd0a | 6975 | { |
c9824451 AM |
6976 | if (this->glink_ != NULL) |
6977 | { | |
6978 | this->glink_->finalize_data_size(); | |
6979 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
6980 | this->glink_, | |
ec661b9d | 6981 | (this->glink_->pltresolve_size |
c9824451 AM |
6982 | - 32)); |
6983 | } | |
dd93cd0a | 6984 | } |
c9269dff | 6985 | } |
cf43a2fe | 6986 | |
42cacb20 DE |
6987 | // Emit any relocs we saved in an attempt to avoid generating COPY |
6988 | // relocs. | |
6989 | if (this->copy_relocs_.any_saved_relocs()) | |
6990 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
6991 | } | |
6992 | ||
aba6bc71 AM |
6993 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6994 | // reloc. | |
6995 | ||
6996 | static bool | |
6997 | ok_lo_toc_insn(uint32_t insn) | |
6998 | { | |
6999 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
7000 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
7001 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
7002 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
7003 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
7004 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
7005 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
7006 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
7007 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
7008 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
7009 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
7010 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
7011 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
7012 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
7013 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
7014 | && (insn & 3) != 1) | |
7015 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
7016 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
7017 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
7018 | } | |
7019 | ||
3ea0a085 AM |
7020 | // Return the value to use for a branch relocation. |
7021 | ||
7022 | template<int size, bool big_endian> | |
1611bc4a | 7023 | bool |
3ea0a085 | 7024 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 7025 | const Symbol_table* symtab, |
3ea0a085 AM |
7026 | const Sized_symbol<size>* gsym, |
7027 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 7028 | Address *value, |
3ea0a085 AM |
7029 | unsigned int *dest_shndx) |
7030 | { | |
9055360d AM |
7031 | if (size == 32 || this->abiversion() >= 2) |
7032 | gold_unreachable(); | |
3ea0a085 | 7033 | *dest_shndx = 0; |
3ea0a085 AM |
7034 | |
7035 | // If the symbol is defined in an opd section, ie. is a function | |
7036 | // descriptor, use the function descriptor code entry address | |
7037 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 | 7038 | if (gsym != NULL |
0e123f69 AM |
7039 | && (gsym->source() != Symbol::FROM_OBJECT |
7040 | || gsym->object()->is_dynamic())) | |
1611bc4a | 7041 | return true; |
3ea0a085 AM |
7042 | if (gsym != NULL) |
7043 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
7044 | unsigned int shndx = symobj->opd_shndx(); | |
7045 | if (shndx == 0) | |
1611bc4a | 7046 | return true; |
3ea0a085 | 7047 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 7048 | if (opd_addr == invalid_address) |
1611bc4a | 7049 | return true; |
c6905c28 | 7050 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 7051 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
7052 | { |
7053 | Address sec_off; | |
1611bc4a | 7054 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
7055 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
7056 | { | |
7057 | Section_id folded | |
7058 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
7059 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
7060 | *dest_shndx = folded.second; | |
7061 | } | |
3ea0a085 | 7062 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
7063 | if (sec_addr == invalid_address) |
7064 | return false; | |
7065 | ||
3ea0a085 | 7066 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 7067 | *value = sec_addr + sec_off; |
3ea0a085 | 7068 | } |
1611bc4a | 7069 | return true; |
3ea0a085 AM |
7070 | } |
7071 | ||
42cacb20 DE |
7072 | // Perform a relocation. |
7073 | ||
7074 | template<int size, bool big_endian> | |
7075 | inline bool | |
7076 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 | 7077 | const Relocate_info<size, big_endian>* relinfo, |
91a65d2f | 7078 | unsigned int, |
d83ce4e3 AM |
7079 | Target_powerpc* target, |
7080 | Output_section* os, | |
7081 | size_t relnum, | |
91a65d2f | 7082 | const unsigned char* preloc, |
d83ce4e3 AM |
7083 | const Sized_symbol<size>* gsym, |
7084 | const Symbol_value<size>* psymval, | |
7085 | unsigned char* view, | |
c9269dff AM |
7086 | Address address, |
7087 | section_size_type view_size) | |
42cacb20 | 7088 | { |
0e804863 ILT |
7089 | if (view == NULL) |
7090 | return true; | |
7091 | ||
91a65d2f AM |
7092 | const elfcpp::Rela<size, big_endian> rela(preloc); |
7093 | unsigned int r_type = elfcpp::elf_r_type<size>(rela.get_r_info()); | |
e3deeb9c | 7094 | switch (this->maybe_skip_tls_get_addr_call(r_type, gsym)) |
dd93cd0a | 7095 | { |
e3deeb9c AM |
7096 | case Track_tls::NOT_EXPECTED: |
7097 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7098 | _("__tls_get_addr call lacks marker reloc")); | |
7099 | break; | |
7100 | case Track_tls::EXPECTED: | |
7101 | // We have already complained. | |
7102 | break; | |
7103 | case Track_tls::SKIP: | |
7104 | return true; | |
7105 | case Track_tls::NORMAL: | |
7106 | break; | |
dd93cd0a | 7107 | } |
dd93cd0a | 7108 | |
42cacb20 | 7109 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 7110 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
0e123f69 | 7111 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
dcfc7dd4 AM |
7112 | // Offset from start of insn to d-field reloc. |
7113 | const int d_offset = big_endian ? 2 : 0; | |
7114 | ||
3ea0a085 AM |
7115 | Powerpc_relobj<size, big_endian>* const object |
7116 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 7117 | Address value = 0; |
0cfb0717 | 7118 | bool has_stub_value = false; |
e5d5f5ed | 7119 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
b3ccdeb5 | 7120 | if ((gsym != NULL |
88b8e639 | 7121 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
b3ccdeb5 AM |
7122 | : object->local_has_plt_offset(r_sym)) |
7123 | && (!psymval->is_ifunc_symbol() | |
9055360d | 7124 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 7125 | { |
9055360d AM |
7126 | if (size == 64 |
7127 | && gsym != NULL | |
7128 | && target->abiversion() >= 2 | |
7129 | && !parameters->options().output_is_position_independent() | |
7130 | && !is_branch_reloc(r_type)) | |
ec661b9d | 7131 | { |
faa2211d AM |
7132 | Address off = target->glink_section()->find_global_entry(gsym); |
7133 | if (off != invalid_address) | |
6ec65f28 AM |
7134 | { |
7135 | value = target->glink_section()->global_entry_address() + off; | |
7136 | has_stub_value = true; | |
7137 | } | |
ec661b9d | 7138 | } |
c9824451 | 7139 | else |
9055360d AM |
7140 | { |
7141 | Stub_table<size, big_endian>* stub_table | |
7142 | = object->stub_table(relinfo->data_shndx); | |
7143 | if (stub_table == NULL) | |
7144 | { | |
7145 | // This is a ref from a data section to an ifunc symbol. | |
7146 | if (target->stub_tables().size() != 0) | |
7147 | stub_table = target->stub_tables()[0]; | |
7148 | } | |
faa2211d AM |
7149 | if (stub_table != NULL) |
7150 | { | |
7151 | Address off; | |
7152 | if (gsym != NULL) | |
7153 | off = stub_table->find_plt_call_entry(object, gsym, r_type, | |
7154 | rela.get_r_addend()); | |
7155 | else | |
7156 | off = stub_table->find_plt_call_entry(object, r_sym, r_type, | |
7157 | rela.get_r_addend()); | |
7158 | if (off != invalid_address) | |
7159 | { | |
7160 | value = stub_table->stub_address() + off; | |
7161 | has_stub_value = true; | |
7162 | } | |
7163 | } | |
9055360d | 7164 | } |
faa2211d AM |
7165 | // We don't care too much about bogus debug references to |
7166 | // non-local functions, but otherwise there had better be a plt | |
7167 | // call stub or global entry stub as appropriate. | |
7168 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 7169 | } |
cf43a2fe AM |
7170 | |
7171 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
7172 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
7173 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
7174 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
7175 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
7176 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 7177 | { |
cf43a2fe AM |
7178 | if (gsym != NULL) |
7179 | { | |
7180 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
7181 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
7182 | } | |
7183 | else | |
7184 | { | |
cf43a2fe AM |
7185 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); |
7186 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
7187 | } | |
dd93cd0a | 7188 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
7189 | } |
7190 | else if (r_type == elfcpp::R_PPC64_TOC) | |
7191 | { | |
c9269dff | 7192 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 7193 | + object->toc_base_offset()); |
cf43a2fe AM |
7194 | } |
7195 | else if (gsym != NULL | |
7196 | && (r_type == elfcpp::R_POWERPC_REL24 | |
7197 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 7198 | && has_stub_value) |
cf43a2fe | 7199 | { |
c9269dff AM |
7200 | if (size == 64) |
7201 | { | |
7202 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
7203 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
7204 | bool can_plt_call = false; | |
7205 | if (rela.get_r_offset() + 8 <= view_size) | |
7206 | { | |
3ea0a085 | 7207 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 7208 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
7209 | if ((insn & 1) != 0 |
7210 | && (insn2 == nop | |
7211 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 7212 | { |
b4f7960d AM |
7213 | elfcpp::Swap<32, big_endian>:: |
7214 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
7215 | can_plt_call = true; |
7216 | } | |
7217 | } | |
7218 | if (!can_plt_call) | |
3ea0a085 AM |
7219 | { |
7220 | // If we don't have a branch and link followed by a nop, | |
7221 | // we can't go via the plt because there is no place to | |
7222 | // put a toc restoring instruction. | |
7223 | // Unless we know we won't be returning. | |
7224 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
7225 | can_plt_call = true; | |
7226 | } | |
7227 | if (!can_plt_call) | |
7228 | { | |
ba8ca3e7 AM |
7229 | // g++ as of 20130507 emits self-calls without a |
7230 | // following nop. This is arguably wrong since we have | |
7231 | // conflicting information. On the one hand a global | |
7232 | // symbol and on the other a local call sequence, but | |
7233 | // don't error for this special case. | |
7234 | // It isn't possible to cheaply verify we have exactly | |
7235 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 7236 | bool ok = false; |
c9824451 | 7237 | Address code = value; |
3ea0a085 AM |
7238 | if (gsym->source() == Symbol::FROM_OBJECT |
7239 | && gsym->object() == object) | |
7240 | { | |
9055360d AM |
7241 | unsigned int dest_shndx = 0; |
7242 | if (target->abiversion() < 2) | |
7243 | { | |
7244 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
7245 | code = psymval->value(object, addend); |
7246 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7247 | &code, &dest_shndx); | |
9055360d | 7248 | } |
3ea0a085 AM |
7249 | bool is_ordinary; |
7250 | if (dest_shndx == 0) | |
7251 | dest_shndx = gsym->shndx(&is_ordinary); | |
7252 | ok = dest_shndx == relinfo->data_shndx; | |
7253 | } | |
7254 | if (!ok) | |
c9824451 AM |
7255 | { |
7256 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7257 | _("call lacks nop, can't restore toc; " | |
7258 | "recompile with -fPIC")); | |
7259 | value = code; | |
7260 | } | |
3ea0a085 | 7261 | } |
c9269dff | 7262 | } |
cf43a2fe | 7263 | } |
dd93cd0a AM |
7264 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
7265 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
7266 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
7267 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
7268 | { | |
7269 | // First instruction of a global dynamic sequence, arg setup insn. | |
7270 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7271 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7272 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
7273 | if (tls_type == tls::TLSOPT_NONE) | |
7274 | got_type = GOT_TYPE_TLSGD; | |
7275 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7276 | got_type = GOT_TYPE_TPREL; | |
7277 | if (got_type != GOT_TYPE_STANDARD) | |
7278 | { | |
7279 | if (gsym != NULL) | |
7280 | { | |
7281 | gold_assert(gsym->has_got_offset(got_type)); | |
7282 | value = gsym->got_offset(got_type); | |
7283 | } | |
7284 | else | |
7285 | { | |
dd93cd0a AM |
7286 | gold_assert(object->local_has_got_offset(r_sym, got_type)); |
7287 | value = object->local_got_offset(r_sym, got_type); | |
7288 | } | |
7289 | value -= target->got_section()->got_base_offset(object); | |
7290 | } | |
7291 | if (tls_type == tls::TLSOPT_TO_IE) | |
7292 | { | |
7293 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7294 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7295 | { | |
dcfc7dd4 | 7296 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
7297 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7298 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
7299 | if (size == 32) | |
7300 | insn |= 32 << 26; // lwz | |
7301 | else | |
7302 | insn |= 58 << 26; // ld | |
7303 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7304 | } | |
7305 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
7306 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
7307 | } | |
7308 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7309 | { | |
7310 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7311 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7312 | { | |
dcfc7dd4 | 7313 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
7314 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7315 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7316 | if (size == 32) |
0f81d3f0 AM |
7317 | insn |= addis_0_2; |
7318 | else | |
7319 | insn |= addis_0_13; | |
dd93cd0a AM |
7320 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7321 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7322 | value = psymval->value(object, rela.get_r_addend()); | |
7323 | } | |
7324 | else | |
7325 | { | |
dcfc7dd4 | 7326 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
7327 | Insn insn = nop; |
7328 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7329 | r_type = elfcpp::R_POWERPC_NONE; | |
7330 | } | |
7331 | } | |
7332 | } | |
7333 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7334 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
7335 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
7336 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
7337 | { | |
7338 | // First instruction of a local dynamic sequence, arg setup insn. | |
7339 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7340 | if (tls_type == tls::TLSOPT_NONE) | |
7341 | { | |
7342 | value = target->tlsld_got_offset(); | |
7343 | value -= target->got_section()->got_base_offset(object); | |
7344 | } | |
7345 | else | |
7346 | { | |
7347 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7348 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7349 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
7350 | { | |
dcfc7dd4 | 7351 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
0f81d3f0 AM |
7352 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7353 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7354 | if (size == 32) |
0f81d3f0 AM |
7355 | insn |= addis_0_2; |
7356 | else | |
7357 | insn |= addis_0_13; | |
dd93cd0a AM |
7358 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7359 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 7360 | value = dtp_offset; |
dd93cd0a AM |
7361 | } |
7362 | else | |
7363 | { | |
dcfc7dd4 | 7364 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
7365 | Insn insn = nop; |
7366 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7367 | r_type = elfcpp::R_POWERPC_NONE; | |
7368 | } | |
7369 | } | |
7370 | } | |
7371 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
7372 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
7373 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
7374 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
7375 | { | |
7376 | // Accesses relative to a local dynamic sequence address, | |
7377 | // no optimisation here. | |
7378 | if (gsym != NULL) | |
7379 | { | |
7380 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
7381 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
7382 | } | |
7383 | else | |
7384 | { | |
dd93cd0a AM |
7385 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); |
7386 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
7387 | } | |
7388 | value -= target->got_section()->got_base_offset(object); | |
7389 | } | |
7390 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7391 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
7392 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
7393 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
7394 | { | |
7395 | // First instruction of initial exec sequence. | |
7396 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7397 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7398 | if (tls_type == tls::TLSOPT_NONE) | |
7399 | { | |
7400 | if (gsym != NULL) | |
7401 | { | |
7402 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
7403 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
7404 | } | |
7405 | else | |
7406 | { | |
dd93cd0a AM |
7407 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); |
7408 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
7409 | } | |
7410 | value -= target->got_section()->got_base_offset(object); | |
7411 | } | |
7412 | else | |
7413 | { | |
7414 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7415 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7416 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
7417 | { | |
dcfc7dd4 | 7418 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
7419 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7420 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
7421 | if (size == 32) | |
7422 | insn |= addis_0_2; | |
7423 | else | |
7424 | insn |= addis_0_13; | |
7425 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7426 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7427 | value = psymval->value(object, rela.get_r_addend()); | |
7428 | } | |
7429 | else | |
7430 | { | |
dcfc7dd4 | 7431 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
dd93cd0a AM |
7432 | Insn insn = nop; |
7433 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7434 | r_type = elfcpp::R_POWERPC_NONE; | |
7435 | } | |
7436 | } | |
7437 | } | |
7438 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7439 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7440 | { | |
7441 | // Second instruction of a global dynamic sequence, | |
7442 | // the __tls_get_addr call | |
e3deeb9c | 7443 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7444 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
7445 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7446 | if (tls_type != tls::TLSOPT_NONE) | |
7447 | { | |
7448 | if (tls_type == tls::TLSOPT_TO_IE) | |
7449 | { | |
7450 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7451 | Insn insn = add_3_3_13; | |
7452 | if (size == 32) | |
7453 | insn = add_3_3_2; | |
7454 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7455 | r_type = elfcpp::R_POWERPC_NONE; | |
7456 | } | |
7457 | else | |
7458 | { | |
7459 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7460 | Insn insn = addi_3_3; | |
7461 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7462 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 7463 | view += d_offset; |
dd93cd0a AM |
7464 | value = psymval->value(object, rela.get_r_addend()); |
7465 | } | |
e3deeb9c | 7466 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
7467 | } |
7468 | } | |
7469 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7470 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7471 | { | |
7472 | // Second instruction of a local dynamic sequence, | |
7473 | // the __tls_get_addr call | |
e3deeb9c | 7474 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7475 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
7476 | if (tls_type == tls::TLSOPT_TO_LE) | |
7477 | { | |
7478 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7479 | Insn insn = addi_3_3; | |
7480 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 7481 | this->skip_next_tls_get_addr_call(); |
dd93cd0a | 7482 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
dcfc7dd4 | 7483 | view += d_offset; |
7404fe1b | 7484 | value = dtp_offset; |
dd93cd0a AM |
7485 | } |
7486 | } | |
7487 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
7488 | { | |
7489 | // Second instruction of an initial exec sequence | |
7490 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7491 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7492 | if (tls_type == tls::TLSOPT_TO_LE) | |
7493 | { | |
7494 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7495 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7496 | unsigned int reg = size == 32 ? 2 : 13; | |
7497 | insn = at_tls_transform(insn, reg); | |
7498 | gold_assert(insn != 0); | |
7499 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7500 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 7501 | view += d_offset; |
dd93cd0a AM |
7502 | value = psymval->value(object, rela.get_r_addend()); |
7503 | } | |
7504 | } | |
0cfb0717 | 7505 | else if (!has_stub_value) |
cf43a2fe | 7506 | { |
dd93cd0a | 7507 | Address addend = 0; |
cbcb23fa | 7508 | if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) |
cf43a2fe | 7509 | addend = rela.get_r_addend(); |
c9824451 | 7510 | value = psymval->value(object, addend); |
dd93cd0a | 7511 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
7512 | { |
7513 | if (target->abiversion() >= 2) | |
7514 | { | |
7515 | if (gsym != NULL) | |
7516 | value += object->ppc64_local_entry_offset(gsym); | |
7517 | else | |
7518 | value += object->ppc64_local_entry_offset(r_sym); | |
7519 | } | |
7520 | else | |
1611bc4a AM |
7521 | { |
7522 | unsigned int dest_shndx; | |
7523 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7524 | &value, &dest_shndx); | |
7525 | } | |
9055360d | 7526 | } |
cbcb23fa | 7527 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
7528 | if (max_branch_offset != 0 |
7529 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
7530 | { | |
7531 | Stub_table<size, big_endian>* stub_table | |
7532 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
7533 | if (stub_table != NULL) |
7534 | { | |
7535 | Address off = stub_table->find_long_branch_entry(object, value); | |
7536 | if (off != invalid_address) | |
0cfb0717 AM |
7537 | { |
7538 | value = (stub_table->stub_address() + stub_table->plt_size() | |
7539 | + off); | |
7540 | has_stub_value = true; | |
7541 | } | |
0cfdc767 | 7542 | } |
ec661b9d | 7543 | } |
42cacb20 DE |
7544 | } |
7545 | ||
42cacb20 DE |
7546 | switch (r_type) |
7547 | { | |
dd93cd0a AM |
7548 | case elfcpp::R_PPC64_REL64: |
7549 | case elfcpp::R_POWERPC_REL32: | |
7550 | case elfcpp::R_POWERPC_REL24: | |
7551 | case elfcpp::R_PPC_PLTREL24: | |
7552 | case elfcpp::R_PPC_LOCAL24PC: | |
7553 | case elfcpp::R_POWERPC_REL16: | |
7554 | case elfcpp::R_POWERPC_REL16_LO: | |
7555 | case elfcpp::R_POWERPC_REL16_HI: | |
7556 | case elfcpp::R_POWERPC_REL16_HA: | |
a680de9a | 7557 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a AM |
7558 | case elfcpp::R_POWERPC_REL14: |
7559 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7560 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7561 | value -= address; | |
7562 | break; | |
7563 | ||
42cacb20 DE |
7564 | case elfcpp::R_PPC64_TOC16: |
7565 | case elfcpp::R_PPC64_TOC16_LO: | |
7566 | case elfcpp::R_PPC64_TOC16_HI: | |
7567 | case elfcpp::R_PPC64_TOC16_HA: | |
7568 | case elfcpp::R_PPC64_TOC16_DS: | |
7569 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 7570 | // Subtract the TOC base address. |
c9269dff | 7571 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 7572 | + object->toc_base_offset()); |
42cacb20 DE |
7573 | break; |
7574 | ||
cf43a2fe AM |
7575 | case elfcpp::R_POWERPC_SECTOFF: |
7576 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
7577 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7578 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7579 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7580 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7581 | if (os != NULL) | |
7582 | value -= os->address(); | |
42cacb20 DE |
7583 | break; |
7584 | ||
dd93cd0a AM |
7585 | case elfcpp::R_PPC64_TPREL16_DS: |
7586 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7587 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7588 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7589 | if (size != 64) |
f9c6b907 | 7590 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a | 7591 | break; |
d8e90251 | 7592 | // Fall through. |
dd93cd0a AM |
7593 | case elfcpp::R_POWERPC_TPREL16: |
7594 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7595 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7596 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7597 | case elfcpp::R_POWERPC_TPREL: | |
7598 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
7599 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7600 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7601 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
7602 | // tls symbol values are relative to tls_segment()->vaddr() | |
7603 | value -= tp_offset; | |
7604 | break; | |
7605 | ||
7606 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7607 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
7608 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7609 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7610 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7611 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
7612 | if (size != 64) | |
7613 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
7614 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
7615 | break; | |
d8e90251 | 7616 | // Fall through. |
dd93cd0a AM |
7617 | case elfcpp::R_POWERPC_DTPREL16: |
7618 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7619 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7620 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7621 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
7622 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7623 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
7624 | // tls symbol values are relative to tls_segment()->vaddr() |
7625 | value -= dtp_offset; | |
7626 | break; | |
7627 | ||
45965137 AM |
7628 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
7629 | if (gsym != NULL) | |
7630 | value += object->ppc64_local_entry_offset(gsym); | |
7631 | else | |
7632 | value += object->ppc64_local_entry_offset(r_sym); | |
7633 | break; | |
7634 | ||
42cacb20 DE |
7635 | default: |
7636 | break; | |
7637 | } | |
7638 | ||
dd93cd0a | 7639 | Insn branch_bit = 0; |
42cacb20 DE |
7640 | switch (r_type) |
7641 | { | |
dd93cd0a AM |
7642 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
7643 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7644 | branch_bit = 1 << 21; | |
d8e90251 | 7645 | // Fall through. |
dd93cd0a AM |
7646 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: |
7647 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7648 | { | |
7649 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7650 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7651 | insn &= ~(1 << 21); | |
7652 | insn |= branch_bit; | |
7653 | if (this->is_isa_v2) | |
7654 | { | |
7655 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
7656 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
7657 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
7658 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
7659 | insn |= 0x02 << 21; | |
7660 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
7661 | insn |= 0x08 << 21; | |
7662 | else | |
7663 | break; | |
7664 | } | |
7665 | else | |
7666 | { | |
7667 | // Invert 'y' bit if not the default. | |
7668 | if (static_cast<Signed_address>(value) < 0) | |
7669 | insn ^= 1 << 21; | |
7670 | } | |
7671 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7672 | } | |
7673 | break; | |
7674 | ||
7675 | default: | |
7676 | break; | |
7677 | } | |
7678 | ||
aba6bc71 AM |
7679 | if (size == 64) |
7680 | { | |
7681 | // Multi-instruction sequences that access the TOC can be | |
7682 | // optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
7683 | // to nop; addi rb,r2,x; | |
7684 | switch (r_type) | |
7685 | { | |
7686 | default: | |
7687 | break; | |
7688 | ||
7689 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7690 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7691 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7692 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7693 | case elfcpp::R_POWERPC_GOT16_HA: | |
7694 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 7695 | if (parameters->options().toc_optimize()) |
aba6bc71 | 7696 | { |
dcfc7dd4 | 7697 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 AM |
7698 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7699 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7700 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
7701 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7702 | _("toc optimization is not supported " | |
7703 | "for %#08x instruction"), insn); | |
7704 | else if (value + 0x8000 < 0x10000) | |
7705 | { | |
7706 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
7707 | return true; | |
7708 | } | |
7709 | } | |
7710 | break; | |
7711 | ||
7712 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7713 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7714 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7715 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7716 | case elfcpp::R_POWERPC_GOT16_LO: | |
7717 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7718 | case elfcpp::R_PPC64_TOC16_LO: | |
7719 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 7720 | if (parameters->options().toc_optimize()) |
aba6bc71 | 7721 | { |
dcfc7dd4 | 7722 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
aba6bc71 AM |
7723 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7724 | if (!ok_lo_toc_insn(insn)) | |
7725 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7726 | _("toc optimization is not supported " | |
7727 | "for %#08x instruction"), insn); | |
7728 | else if (value + 0x8000 < 0x10000) | |
7729 | { | |
7730 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
7731 | { | |
7732 | // Transform addic to addi when we change reg. | |
7733 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
7734 | insn |= (14u << 26) | (2 << 16); | |
7735 | } | |
7736 | else | |
7737 | { | |
7738 | insn &= ~(0x1f << 16); | |
7739 | insn |= 2 << 16; | |
7740 | } | |
7741 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7742 | } | |
7743 | } | |
7744 | break; | |
549dba71 AM |
7745 | |
7746 | case elfcpp::R_PPC64_ENTRY: | |
7747 | value = (target->got_section()->output_section()->address() | |
7748 | + object->toc_base_offset()); | |
7749 | if (value + 0x80008000 <= 0xffffffff | |
7750 | && !parameters->options().output_is_position_independent()) | |
7751 | { | |
7752 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7753 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
7754 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
7755 | ||
7756 | if ((insn1 & ~0xfffc) == ld_2_12 | |
7757 | && insn2 == add_2_2_12) | |
7758 | { | |
7759 | insn1 = lis_2 + ha(value); | |
7760 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
7761 | insn2 = addi_2_2 + l(value); | |
7762 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
7763 | return true; | |
7764 | } | |
7765 | } | |
7766 | else | |
7767 | { | |
7768 | value -= address; | |
7769 | if (value + 0x80008000 <= 0xffffffff) | |
7770 | { | |
7771 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7772 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview); | |
7773 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview + 1); | |
7774 | ||
7775 | if ((insn1 & ~0xfffc) == ld_2_12 | |
7776 | && insn2 == add_2_2_12) | |
7777 | { | |
7778 | insn1 = addis_2_12 + ha(value); | |
7779 | elfcpp::Swap<32, big_endian>::writeval(iview, insn1); | |
7780 | insn2 = addi_2_2 + l(value); | |
7781 | elfcpp::Swap<32, big_endian>::writeval(iview + 1, insn2); | |
7782 | return true; | |
7783 | } | |
7784 | } | |
7785 | } | |
7786 | break; | |
e3a7574e AM |
7787 | |
7788 | case elfcpp::R_POWERPC_REL16_LO: | |
7789 | // If we are generating a non-PIC executable, edit | |
7790 | // 0: addis 2,12,.TOC.-0b@ha | |
7791 | // addi 2,2,.TOC.-0b@l | |
7792 | // used by ELFv2 global entry points to set up r2, to | |
7793 | // lis 2,.TOC.@ha | |
7794 | // addi 2,2,.TOC.@l | |
7795 | // if .TOC. is in range. */ | |
7796 | if (value + address - 4 + 0x80008000 <= 0xffffffff | |
7797 | && relnum != 0 | |
7798 | && preloc != NULL | |
7799 | && target->abiversion() >= 2 | |
7800 | && !parameters->options().output_is_position_independent() | |
4f038ee5 | 7801 | && rela.get_r_addend() == d_offset + 4 |
e3a7574e AM |
7802 | && gsym != NULL |
7803 | && strcmp(gsym->name(), ".TOC.") == 0) | |
7804 | { | |
0e123f69 | 7805 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
e3a7574e AM |
7806 | Reltype prev_rela(preloc - reloc_size); |
7807 | if ((prev_rela.get_r_info() | |
7808 | == elfcpp::elf_r_info<size>(r_sym, | |
7809 | elfcpp::R_POWERPC_REL16_HA)) | |
7810 | && prev_rela.get_r_offset() + 4 == rela.get_r_offset() | |
7811 | && prev_rela.get_r_addend() + 4 == rela.get_r_addend()) | |
7812 | { | |
dcfc7dd4 | 7813 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
e3a7574e AM |
7814 | Insn insn1 = elfcpp::Swap<32, big_endian>::readval(iview - 1); |
7815 | Insn insn2 = elfcpp::Swap<32, big_endian>::readval(iview); | |
7816 | ||
7817 | if ((insn1 & 0xffff0000) == addis_2_12 | |
7818 | && (insn2 & 0xffff0000) == addi_2_2) | |
7819 | { | |
7820 | insn1 = lis_2 + ha(value + address - 4); | |
7821 | elfcpp::Swap<32, big_endian>::writeval(iview - 1, insn1); | |
7822 | insn2 = addi_2_2 + l(value + address - 4); | |
7823 | elfcpp::Swap<32, big_endian>::writeval(iview, insn2); | |
7824 | if (relinfo->rr) | |
7825 | { | |
7826 | relinfo->rr->set_strategy(relnum - 1, | |
7827 | Relocatable_relocs::RELOC_SPECIAL); | |
7828 | relinfo->rr->set_strategy(relnum, | |
7829 | Relocatable_relocs::RELOC_SPECIAL); | |
7830 | } | |
7831 | return true; | |
7832 | } | |
7833 | } | |
7834 | } | |
7835 | break; | |
aba6bc71 AM |
7836 | } |
7837 | } | |
7838 | ||
f4baf0d4 | 7839 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 7840 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
7841 | switch (r_type) |
7842 | { | |
7843 | case elfcpp::R_POWERPC_ADDR32: | |
7844 | case elfcpp::R_POWERPC_UADDR32: | |
7845 | if (size == 64) | |
f4baf0d4 | 7846 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7847 | break; |
7848 | ||
7849 | case elfcpp::R_POWERPC_REL32: | |
a680de9a | 7850 | case elfcpp::R_POWERPC_REL16DX_HA: |
dd93cd0a | 7851 | if (size == 64) |
f4baf0d4 | 7852 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
7853 | break; |
7854 | ||
dd93cd0a | 7855 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 7856 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7857 | break; |
7858 | ||
b80eed39 AM |
7859 | case elfcpp::R_POWERPC_ADDR16: |
7860 | // We really should have three separate relocations, | |
7861 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
7862 | // and one for insns with 16-bit unsigned fields. | |
7863 | overflow = Reloc::CHECK_BITFIELD; | |
7864 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
7865 | overflow = Reloc::CHECK_LOW_INSN; | |
7866 | break; | |
7867 | ||
f9c6b907 AM |
7868 | case elfcpp::R_POWERPC_ADDR16_HI: |
7869 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7870 | case elfcpp::R_POWERPC_GOT16_HI: | |
7871 | case elfcpp::R_POWERPC_GOT16_HA: | |
7872 | case elfcpp::R_POWERPC_PLT16_HI: | |
7873 | case elfcpp::R_POWERPC_PLT16_HA: | |
7874 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7875 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7876 | case elfcpp::R_PPC64_TOC16_HI: | |
7877 | case elfcpp::R_PPC64_TOC16_HA: | |
7878 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
7879 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
7880 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7881 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7882 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7883 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7884 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7885 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7886 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7887 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7888 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7889 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7890 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7891 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7892 | case elfcpp::R_POWERPC_REL16_HI: | |
7893 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
7894 | if (size != 32) |
7895 | overflow = Reloc::CHECK_HIGH_INSN; | |
7896 | break; | |
7897 | ||
dd93cd0a AM |
7898 | case elfcpp::R_POWERPC_REL16: |
7899 | case elfcpp::R_PPC64_TOC16: | |
7900 | case elfcpp::R_POWERPC_GOT16: | |
7901 | case elfcpp::R_POWERPC_SECTOFF: | |
7902 | case elfcpp::R_POWERPC_TPREL16: | |
7903 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
7904 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7905 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7906 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7907 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7908 | overflow = Reloc::CHECK_LOW_INSN; | |
7909 | break; | |
7910 | ||
7911 | case elfcpp::R_POWERPC_ADDR24: | |
7912 | case elfcpp::R_POWERPC_ADDR14: | |
7913 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7914 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7915 | case elfcpp::R_PPC64_ADDR16_DS: | |
7916 | case elfcpp::R_POWERPC_REL24: | |
7917 | case elfcpp::R_PPC_PLTREL24: | |
7918 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
7919 | case elfcpp::R_PPC64_TPREL16_DS: |
7920 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7921 | case elfcpp::R_PPC64_TOC16_DS: | |
7922 | case elfcpp::R_PPC64_GOT16_DS: | |
7923 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7924 | case elfcpp::R_POWERPC_REL14: | |
7925 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7926 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 7927 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 7928 | break; |
dd93cd0a | 7929 | } |
42cacb20 | 7930 | |
dcfc7dd4 | 7931 | Insn* iview = reinterpret_cast<Insn*>(view - d_offset); |
a680de9a PB |
7932 | Insn insn = 0; |
7933 | ||
b80eed39 AM |
7934 | if (overflow == Reloc::CHECK_LOW_INSN |
7935 | || overflow == Reloc::CHECK_HIGH_INSN) | |
7936 | { | |
a680de9a | 7937 | insn = elfcpp::Swap<32, big_endian>::readval(iview); |
b80eed39 | 7938 | |
a47622ac AM |
7939 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
7940 | overflow = Reloc::CHECK_BITFIELD; | |
7941 | else if (overflow == Reloc::CHECK_LOW_INSN | |
7942 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
7943 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
7944 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
7945 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
7946 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
7947 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 7948 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
7949 | else |
7950 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
7951 | } |
7952 | ||
a680de9a | 7953 | bool maybe_dq_reloc = false; |
3ea0a085 | 7954 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 7955 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
7956 | switch (r_type) |
7957 | { | |
7958 | case elfcpp::R_POWERPC_NONE: | |
7959 | case elfcpp::R_POWERPC_TLS: | |
7960 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7961 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
42cacb20 DE |
7962 | break; |
7963 | ||
7964 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 7965 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 7966 | case elfcpp::R_PPC64_TOC: |
45965137 | 7967 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
7968 | Reloc::addr64(view, value); |
7969 | break; | |
7970 | ||
7971 | case elfcpp::R_POWERPC_TPREL: | |
7972 | case elfcpp::R_POWERPC_DTPREL: | |
7973 | if (size == 64) | |
7974 | Reloc::addr64(view, value); | |
7975 | else | |
3ea0a085 | 7976 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7977 | break; |
7978 | ||
7979 | case elfcpp::R_PPC64_UADDR64: | |
7980 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
7981 | break; |
7982 | ||
7983 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 7984 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7985 | break; |
7986 | ||
acc276d8 | 7987 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 7988 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 7989 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
7990 | break; |
7991 | ||
7992 | case elfcpp::R_POWERPC_ADDR24: | |
7993 | case elfcpp::R_POWERPC_REL24: | |
7994 | case elfcpp::R_PPC_PLTREL24: | |
7995 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 7996 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
7997 | break; |
7998 | ||
dd93cd0a AM |
7999 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
8000 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
8001 | case elfcpp::R_POWERPC_GOT_TPREL16: |
8002 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
8003 | if (size == 64) |
8004 | { | |
ec86f434 | 8005 | // On ppc64 these are all ds form |
a680de9a | 8006 | maybe_dq_reloc = true; |
dd93cd0a AM |
8007 | break; |
8008 | } | |
c25aa1e1 | 8009 | // Fall through. |
cf43a2fe | 8010 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 8011 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 8012 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 8013 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 8014 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
8015 | case elfcpp::R_POWERPC_TPREL16: |
8016 | case elfcpp::R_POWERPC_DTPREL16: | |
8017 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
8018 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 8019 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 8020 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 8021 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 8022 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 8023 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
8024 | case elfcpp::R_POWERPC_TPREL16_LO: |
8025 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
8026 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
8027 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
a680de9a PB |
8028 | if (size == 64) |
8029 | status = Reloc::addr16(view, value, overflow); | |
8030 | else | |
8031 | maybe_dq_reloc = true; | |
dd93cd0a AM |
8032 | break; |
8033 | ||
8034 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 8035 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
8036 | break; |
8037 | ||
f9c6b907 AM |
8038 | case elfcpp::R_PPC64_ADDR16_HIGH: |
8039 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
8040 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
8041 | if (size == 32) | |
8042 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
8043 | goto unsupp; | |
d8e90251 | 8044 | // Fall through. |
cf43a2fe | 8045 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 8046 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 8047 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 8048 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 8049 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
8050 | case elfcpp::R_POWERPC_TPREL16_HI: |
8051 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
8052 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
8053 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
8054 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
8055 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
8056 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
8057 | break; |
8058 | ||
f9c6b907 AM |
8059 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
8060 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
8061 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
8062 | if (size == 32) | |
8063 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
8064 | goto unsupp; | |
d8e90251 | 8065 | // Fall through. |
cf43a2fe | 8066 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 8067 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 8068 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 8069 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 8070 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
8071 | case elfcpp::R_POWERPC_TPREL16_HA: |
8072 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
8073 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
8074 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
8075 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
8076 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
8077 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
8078 | break; |
8079 | ||
a680de9a PB |
8080 | case elfcpp::R_POWERPC_REL16DX_HA: |
8081 | status = Reloc::addr16dx_ha(view, value, overflow); | |
8082 | break; | |
8083 | ||
dd93cd0a AM |
8084 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
8085 | if (size == 32) | |
8086 | // R_PPC_EMB_NADDR16_LO | |
8087 | goto unsupp; | |
d8e90251 | 8088 | // Fall through. |
dd93cd0a AM |
8089 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
8090 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
8091 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
8092 | break; |
8093 | ||
dd93cd0a AM |
8094 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
8095 | if (size == 32) | |
8096 | // R_PPC_EMB_NADDR16_HI | |
8097 | goto unsupp; | |
d8e90251 | 8098 | // Fall through. |
dd93cd0a AM |
8099 | case elfcpp::R_PPC64_ADDR16_HIGHERA: |
8100 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
8101 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
8102 | break; |
8103 | ||
dd93cd0a AM |
8104 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
8105 | if (size == 32) | |
8106 | // R_PPC_EMB_NADDR16_HA | |
8107 | goto unsupp; | |
d8e90251 | 8108 | // Fall through. |
dd93cd0a AM |
8109 | case elfcpp::R_PPC64_ADDR16_HIGHEST: |
8110 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
8111 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
8112 | break; |
8113 | ||
dd93cd0a AM |
8114 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
8115 | if (size == 32) | |
8116 | // R_PPC_EMB_SDAI16 | |
8117 | goto unsupp; | |
d8e90251 | 8118 | // Fall through. |
dd93cd0a AM |
8119 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: |
8120 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
8121 | Reloc::addr16_ha3(view, value); | |
8122 | break; | |
8123 | ||
8124 | case elfcpp::R_PPC64_DTPREL16_DS: | |
8125 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
8126 | if (size == 32) | |
8127 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
8128 | goto unsupp; | |
d8e90251 | 8129 | // Fall through. |
dd93cd0a AM |
8130 | case elfcpp::R_PPC64_TPREL16_DS: |
8131 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
8132 | if (size == 32) | |
8133 | // R_PPC_TLSGD, R_PPC_TLSLD | |
8134 | break; | |
d8e90251 | 8135 | // Fall through. |
cf43a2fe AM |
8136 | case elfcpp::R_PPC64_ADDR16_DS: |
8137 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
8138 | case elfcpp::R_PPC64_TOC16_DS: |
8139 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
8140 | case elfcpp::R_PPC64_GOT16_DS: |
8141 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
8142 | case elfcpp::R_PPC64_SECTOFF_DS: | |
8143 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
a680de9a | 8144 | maybe_dq_reloc = true; |
dd93cd0a AM |
8145 | break; |
8146 | ||
8147 | case elfcpp::R_POWERPC_ADDR14: | |
8148 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
8149 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
8150 | case elfcpp::R_POWERPC_REL14: | |
8151 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
8152 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 8153 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
8154 | break; |
8155 | ||
8156 | case elfcpp::R_POWERPC_COPY: | |
8157 | case elfcpp::R_POWERPC_GLOB_DAT: | |
8158 | case elfcpp::R_POWERPC_JMP_SLOT: | |
8159 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 8160 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
8161 | case elfcpp::R_PPC64_JMP_IREL: |
8162 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
8163 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
8164 | _("unexpected reloc %u in object file"), | |
8165 | r_type); | |
8166 | break; | |
8167 | ||
dd93cd0a AM |
8168 | case elfcpp::R_PPC_EMB_SDA21: |
8169 | if (size == 32) | |
8170 | goto unsupp; | |
8171 | else | |
8172 | { | |
8173 | // R_PPC64_TOCSAVE. For the time being this can be ignored. | |
8174 | } | |
8175 | break; | |
8176 | ||
8177 | case elfcpp::R_PPC_EMB_SDA2I16: | |
8178 | case elfcpp::R_PPC_EMB_SDA2REL: | |
8179 | if (size == 32) | |
8180 | goto unsupp; | |
8181 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
8182 | break; |
8183 | ||
dd93cd0a AM |
8184 | case elfcpp::R_POWERPC_PLT32: |
8185 | case elfcpp::R_POWERPC_PLTREL32: | |
8186 | case elfcpp::R_POWERPC_PLT16_LO: | |
8187 | case elfcpp::R_POWERPC_PLT16_HI: | |
8188 | case elfcpp::R_POWERPC_PLT16_HA: | |
8189 | case elfcpp::R_PPC_SDAREL16: | |
8190 | case elfcpp::R_POWERPC_ADDR30: | |
8191 | case elfcpp::R_PPC64_PLT64: | |
8192 | case elfcpp::R_PPC64_PLTREL64: | |
8193 | case elfcpp::R_PPC64_PLTGOT16: | |
8194 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
8195 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
8196 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
8197 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
8198 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
8199 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
8200 | case elfcpp::R_PPC_EMB_RELSDA: |
8201 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 8202 | default: |
dd93cd0a | 8203 | unsupp: |
42cacb20 DE |
8204 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
8205 | _("unsupported reloc %u"), | |
8206 | r_type); | |
8207 | break; | |
8208 | } | |
a680de9a PB |
8209 | |
8210 | if (maybe_dq_reloc) | |
8211 | { | |
8212 | if (insn == 0) | |
8213 | insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
8214 | ||
8215 | if ((insn & (0x3f << 26)) == 56u << 26 /* lq */ | |
8216 | || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */ | |
8217 | && (insn & 3) == 1)) | |
8218 | status = Reloc::addr16_dq(view, value, overflow); | |
8219 | else if (size == 64 | |
8220 | || (insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */ | |
8221 | || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */ | |
8222 | || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */ | |
8223 | || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */) | |
8224 | status = Reloc::addr16_ds(view, value, overflow); | |
8225 | else | |
8226 | status = Reloc::addr16(view, value, overflow); | |
8227 | } | |
8228 | ||
0cfb0717 | 8229 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
8230 | && (has_stub_value |
8231 | || !(gsym != NULL | |
282c9750 | 8232 | && gsym->is_undefined() |
3ffaac20 | 8233 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
8234 | { |
8235 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
8236 | _("relocation overflow")); | |
8237 | if (has_stub_value) | |
8238 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
8239 | } | |
42cacb20 DE |
8240 | |
8241 | return true; | |
8242 | } | |
8243 | ||
42cacb20 DE |
8244 | // Relocate section data. |
8245 | ||
8246 | template<int size, bool big_endian> | |
8247 | void | |
8248 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
8249 | const Relocate_info<size, big_endian>* relinfo, |
8250 | unsigned int sh_type, | |
8251 | const unsigned char* prelocs, | |
8252 | size_t reloc_count, | |
8253 | Output_section* output_section, | |
8254 | bool needs_special_offset_handling, | |
8255 | unsigned char* view, | |
c9269dff | 8256 | Address address, |
d83ce4e3 AM |
8257 | section_size_type view_size, |
8258 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
8259 | { |
8260 | typedef Target_powerpc<size, big_endian> Powerpc; | |
8261 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
8262 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
8263 | Powerpc_comdat_behavior; | |
4d625b70 CC |
8264 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> |
8265 | Classify_reloc; | |
42cacb20 DE |
8266 | |
8267 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8268 | ||
4d625b70 CC |
8269 | gold::relocate_section<size, big_endian, Powerpc, Powerpc_relocate, |
8270 | Powerpc_comdat_behavior, Classify_reloc>( | |
42cacb20 DE |
8271 | relinfo, |
8272 | this, | |
8273 | prelocs, | |
8274 | reloc_count, | |
8275 | output_section, | |
8276 | needs_special_offset_handling, | |
8277 | view, | |
8278 | address, | |
364c7fa5 ILT |
8279 | view_size, |
8280 | reloc_symbol_changes); | |
42cacb20 DE |
8281 | } |
8282 | ||
4d625b70 | 8283 | template<int size, bool big_endian> |
cf43a2fe | 8284 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 8285 | { |
cf43a2fe | 8286 | public: |
0e123f69 AM |
8287 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
8288 | static const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
4d625b70 CC |
8289 | static const int sh_type = elfcpp::SHT_RELA; |
8290 | ||
8291 | // Return the symbol referred to by the relocation. | |
8292 | static inline unsigned int | |
8293 | get_r_sym(const Reltype* reloc) | |
8294 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
8295 | ||
8296 | // Return the type of the relocation. | |
8297 | static inline unsigned int | |
8298 | get_r_type(const Reltype* reloc) | |
8299 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
8300 | ||
cf43a2fe AM |
8301 | // Return the strategy to use for a local symbol which is not a |
8302 | // section symbol, given the relocation type. | |
8303 | inline Relocatable_relocs::Reloc_strategy | |
8304 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
8305 | { | |
8306 | if (r_type == 0 && r_sym == 0) | |
8307 | return Relocatable_relocs::RELOC_DISCARD; | |
8308 | return Relocatable_relocs::RELOC_COPY; | |
8309 | } | |
8310 | ||
8311 | // Return the strategy to use for a local symbol which is a section | |
8312 | // symbol, given the relocation type. | |
8313 | inline Relocatable_relocs::Reloc_strategy | |
8314 | local_section_strategy(unsigned int, Relobj*) | |
8315 | { | |
8316 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
8317 | } | |
8318 | ||
8319 | // Return the strategy to use for a global symbol, given the | |
8320 | // relocation type, the object, and the symbol index. | |
8321 | inline Relocatable_relocs::Reloc_strategy | |
8322 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
8323 | { | |
8324 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
8325 | return Relocatable_relocs::RELOC_SPECIAL; | |
8326 | return Relocatable_relocs::RELOC_COPY; | |
8327 | } | |
8328 | }; | |
42cacb20 DE |
8329 | |
8330 | // Scan the relocs during a relocatable link. | |
8331 | ||
8332 | template<int size, bool big_endian> | |
8333 | void | |
8334 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
8335 | Symbol_table* symtab, |
8336 | Layout* layout, | |
8337 | Sized_relobj_file<size, big_endian>* object, | |
8338 | unsigned int data_shndx, | |
8339 | unsigned int sh_type, | |
8340 | const unsigned char* prelocs, | |
8341 | size_t reloc_count, | |
8342 | Output_section* output_section, | |
8343 | bool needs_special_offset_handling, | |
8344 | size_t local_symbol_count, | |
8345 | const unsigned char* plocal_symbols, | |
8346 | Relocatable_relocs* rr) | |
42cacb20 | 8347 | { |
4d625b70 CC |
8348 | typedef Powerpc_scan_relocatable_reloc<size, big_endian> Scan_strategy; |
8349 | ||
42cacb20 DE |
8350 | gold_assert(sh_type == elfcpp::SHT_RELA); |
8351 | ||
4d625b70 | 8352 | gold::scan_relocatable_relocs<size, big_endian, Scan_strategy>( |
42cacb20 DE |
8353 | symtab, |
8354 | layout, | |
8355 | object, | |
8356 | data_shndx, | |
8357 | prelocs, | |
8358 | reloc_count, | |
8359 | output_section, | |
8360 | needs_special_offset_handling, | |
8361 | local_symbol_count, | |
8362 | plocal_symbols, | |
8363 | rr); | |
8364 | } | |
8365 | ||
4d625b70 CC |
8366 | // Scan the relocs for --emit-relocs. |
8367 | ||
8368 | template<int size, bool big_endian> | |
8369 | void | |
8370 | Target_powerpc<size, big_endian>::emit_relocs_scan( | |
8371 | Symbol_table* symtab, | |
8372 | Layout* layout, | |
8373 | Sized_relobj_file<size, big_endian>* object, | |
8374 | unsigned int data_shndx, | |
8375 | unsigned int sh_type, | |
8376 | const unsigned char* prelocs, | |
8377 | size_t reloc_count, | |
8378 | Output_section* output_section, | |
8379 | bool needs_special_offset_handling, | |
8380 | size_t local_symbol_count, | |
8381 | const unsigned char* plocal_syms, | |
8382 | Relocatable_relocs* rr) | |
8383 | { | |
8384 | typedef gold::Default_classify_reloc<elfcpp::SHT_RELA, size, big_endian> | |
8385 | Classify_reloc; | |
8386 | typedef gold::Default_emit_relocs_strategy<Classify_reloc> | |
8387 | Emit_relocs_strategy; | |
8388 | ||
8389 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8390 | ||
8391 | gold::scan_relocatable_relocs<size, big_endian, Emit_relocs_strategy>( | |
8392 | symtab, | |
8393 | layout, | |
8394 | object, | |
8395 | data_shndx, | |
8396 | prelocs, | |
8397 | reloc_count, | |
8398 | output_section, | |
8399 | needs_special_offset_handling, | |
8400 | local_symbol_count, | |
8401 | plocal_syms, | |
8402 | rr); | |
8403 | } | |
8404 | ||
7404fe1b | 8405 | // Emit relocations for a section. |
dd93cd0a AM |
8406 | // This is a modified version of the function by the same name in |
8407 | // target-reloc.h. Using relocate_special_relocatable for | |
8408 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
8409 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
8410 | |
8411 | template<int size, bool big_endian> | |
8412 | void | |
7404fe1b | 8413 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
8414 | const Relocate_info<size, big_endian>* relinfo, |
8415 | unsigned int sh_type, | |
8416 | const unsigned char* prelocs, | |
8417 | size_t reloc_count, | |
8418 | Output_section* output_section, | |
62fe925a | 8419 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
cf43a2fe | 8420 | unsigned char*, |
dd93cd0a | 8421 | Address view_address, |
cf43a2fe | 8422 | section_size_type, |
42cacb20 DE |
8423 | unsigned char* reloc_view, |
8424 | section_size_type reloc_view_size) | |
8425 | { | |
8426 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8427 | ||
0e123f69 AM |
8428 | typedef typename elfcpp::Rela<size, big_endian> Reltype; |
8429 | typedef typename elfcpp::Rela_write<size, big_endian> Reltype_write; | |
8430 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; | |
dcfc7dd4 AM |
8431 | // Offset from start of insn to d-field reloc. |
8432 | const int d_offset = big_endian ? 2 : 0; | |
cf43a2fe AM |
8433 | |
8434 | Powerpc_relobj<size, big_endian>* const object | |
8435 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
8436 | const unsigned int local_count = object->local_symbol_count(); | |
8437 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 8438 | Address got2_addend = 0; |
cf43a2fe | 8439 | if (got2_shndx != 0) |
c9269dff AM |
8440 | { |
8441 | got2_addend = object->get_output_section_offset(got2_shndx); | |
8442 | gold_assert(got2_addend != invalid_address); | |
8443 | } | |
cf43a2fe AM |
8444 | |
8445 | unsigned char* pwrite = reloc_view; | |
7404fe1b | 8446 | bool zap_next = false; |
cf43a2fe AM |
8447 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
8448 | { | |
91a65d2f | 8449 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
cf43a2fe AM |
8450 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
8451 | continue; | |
8452 | ||
8453 | Reltype reloc(prelocs); | |
8454 | Reltype_write reloc_write(pwrite); | |
8455 | ||
7404fe1b | 8456 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 8457 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
8458 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
8459 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
8460 | const unsigned int orig_r_sym = r_sym; | |
8461 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
8462 | = reloc.get_r_addend(); | |
8463 | const Symbol* gsym = NULL; | |
8464 | ||
8465 | if (zap_next) | |
8466 | { | |
8467 | // We could arrange to discard these and other relocs for | |
8468 | // tls optimised sequences in the strategy methods, but for | |
8469 | // now do as BFD ld does. | |
8470 | r_type = elfcpp::R_POWERPC_NONE; | |
8471 | zap_next = false; | |
8472 | } | |
cf43a2fe AM |
8473 | |
8474 | // Get the new symbol index. | |
9215b98b | 8475 | Output_section* os = NULL; |
cf43a2fe AM |
8476 | if (r_sym < local_count) |
8477 | { | |
8478 | switch (strategy) | |
8479 | { | |
8480 | case Relocatable_relocs::RELOC_COPY: | |
8481 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 8482 | if (r_sym != 0) |
dd93cd0a | 8483 | { |
7404fe1b AM |
8484 | r_sym = object->symtab_index(r_sym); |
8485 | gold_assert(r_sym != -1U); | |
dd93cd0a | 8486 | } |
cf43a2fe AM |
8487 | break; |
8488 | ||
8489 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
8490 | { | |
8491 | // We are adjusting a section symbol. We need to find | |
8492 | // the symbol table index of the section symbol for | |
8493 | // the output section corresponding to input section | |
8494 | // in which this symbol is defined. | |
8495 | gold_assert(r_sym < local_count); | |
8496 | bool is_ordinary; | |
8497 | unsigned int shndx = | |
8498 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
8499 | gold_assert(is_ordinary); | |
9215b98b | 8500 | os = object->output_section(shndx); |
cf43a2fe AM |
8501 | gold_assert(os != NULL); |
8502 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 8503 | r_sym = os->symtab_index(); |
cf43a2fe AM |
8504 | } |
8505 | break; | |
8506 | ||
8507 | default: | |
8508 | gold_unreachable(); | |
8509 | } | |
8510 | } | |
8511 | else | |
8512 | { | |
7404fe1b | 8513 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
8514 | gold_assert(gsym != NULL); |
8515 | if (gsym->is_forwarder()) | |
8516 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
8517 | ||
8518 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 8519 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
8520 | } |
8521 | ||
8522 | // Get the new offset--the location in the output section where | |
8523 | // this relocation should be applied. | |
cf43a2fe | 8524 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8525 | offset += offset_in_output_section; |
cf43a2fe AM |
8526 | else |
8527 | { | |
c9269dff AM |
8528 | section_offset_type sot_offset = |
8529 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 8530 | section_offset_type new_sot_offset = |
c9269dff AM |
8531 | output_section->output_offset(object, relinfo->data_shndx, |
8532 | sot_offset); | |
cf43a2fe | 8533 | gold_assert(new_sot_offset != -1); |
7404fe1b | 8534 | offset = new_sot_offset; |
cf43a2fe AM |
8535 | } |
8536 | ||
dd93cd0a AM |
8537 | // In an object file, r_offset is an offset within the section. |
8538 | // In an executable or dynamic object, generated by | |
8539 | // --emit-relocs, r_offset is an absolute address. | |
7404fe1b | 8540 | if (!parameters->options().relocatable()) |
dd93cd0a | 8541 | { |
7404fe1b | 8542 | offset += view_address; |
dd93cd0a | 8543 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8544 | offset -= offset_in_output_section; |
dd93cd0a AM |
8545 | } |
8546 | ||
cf43a2fe | 8547 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
8548 | if (strategy == Relocatable_relocs::RELOC_COPY) |
8549 | ; | |
8550 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
8551 | { | |
7404fe1b | 8552 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
9215b98b AM |
8553 | gold_assert(os != NULL); |
8554 | addend = psymval->value(object, addend) - os->address(); | |
cf43a2fe AM |
8555 | } |
8556 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
8557 | { | |
e3a7574e AM |
8558 | if (size == 32) |
8559 | { | |
8560 | if (addend >= 32768) | |
8561 | addend += got2_addend; | |
8562 | } | |
8563 | else if (r_type == elfcpp::R_POWERPC_REL16_HA) | |
8564 | { | |
8565 | r_type = elfcpp::R_POWERPC_ADDR16_HA; | |
dcfc7dd4 | 8566 | addend -= d_offset; |
e3a7574e AM |
8567 | } |
8568 | else if (r_type == elfcpp::R_POWERPC_REL16_LO) | |
8569 | { | |
8570 | r_type = elfcpp::R_POWERPC_ADDR16_LO; | |
dcfc7dd4 | 8571 | addend -= d_offset + 4; |
e3a7574e | 8572 | } |
cf43a2fe AM |
8573 | } |
8574 | else | |
8575 | gold_unreachable(); | |
8576 | ||
7404fe1b AM |
8577 | if (!parameters->options().relocatable()) |
8578 | { | |
8579 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8580 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8581 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8582 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8583 | { | |
8584 | // First instruction of a global dynamic sequence, | |
8585 | // arg setup insn. | |
8586 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8587 | switch (this->optimize_tls_gd(final)) | |
8588 | { | |
8589 | case tls::TLSOPT_TO_IE: | |
8590 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8591 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8592 | break; | |
8593 | case tls::TLSOPT_TO_LE: | |
8594 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8595 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8596 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8597 | else | |
8598 | { | |
8599 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 8600 | offset -= d_offset; |
7404fe1b AM |
8601 | } |
8602 | break; | |
8603 | default: | |
8604 | break; | |
8605 | } | |
8606 | } | |
8607 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8608 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8609 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8610 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8611 | { | |
8612 | // First instruction of a local dynamic sequence, | |
8613 | // arg setup insn. | |
8614 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8615 | { | |
8616 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8617 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8618 | { | |
8619 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8620 | const Output_section* os = relinfo->layout->tls_segment() | |
8621 | ->first_section(); | |
8622 | gold_assert(os != NULL); | |
8623 | gold_assert(os->needs_symtab_index()); | |
8624 | r_sym = os->symtab_index(); | |
8625 | addend = dtp_offset; | |
8626 | } | |
8627 | else | |
8628 | { | |
8629 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 8630 | offset -= d_offset; |
7404fe1b AM |
8631 | } |
8632 | } | |
8633 | } | |
8634 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8635 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8636 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8637 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8638 | { | |
8639 | // First instruction of initial exec sequence. | |
8640 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8641 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8642 | { | |
8643 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8644 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8645 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8646 | else | |
8647 | { | |
8648 | r_type = elfcpp::R_POWERPC_NONE; | |
dcfc7dd4 | 8649 | offset -= d_offset; |
7404fe1b AM |
8650 | } |
8651 | } | |
8652 | } | |
8653 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8654 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8655 | { | |
8656 | // Second instruction of a global dynamic sequence, | |
8657 | // the __tls_get_addr call | |
8658 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8659 | switch (this->optimize_tls_gd(final)) | |
8660 | { | |
8661 | case tls::TLSOPT_TO_IE: | |
8662 | r_type = elfcpp::R_POWERPC_NONE; | |
8663 | zap_next = true; | |
8664 | break; | |
8665 | case tls::TLSOPT_TO_LE: | |
8666 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8667 | offset += d_offset; |
7404fe1b AM |
8668 | zap_next = true; |
8669 | break; | |
8670 | default: | |
8671 | break; | |
8672 | } | |
8673 | } | |
8674 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8675 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8676 | { | |
8677 | // Second instruction of a local dynamic sequence, | |
8678 | // the __tls_get_addr call | |
8679 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8680 | { | |
8681 | const Output_section* os = relinfo->layout->tls_segment() | |
8682 | ->first_section(); | |
8683 | gold_assert(os != NULL); | |
8684 | gold_assert(os->needs_symtab_index()); | |
8685 | r_sym = os->symtab_index(); | |
8686 | addend = dtp_offset; | |
8687 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8688 | offset += d_offset; |
7404fe1b AM |
8689 | zap_next = true; |
8690 | } | |
8691 | } | |
8692 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8693 | { | |
8694 | // Second instruction of an initial exec sequence | |
8695 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8696 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8697 | { | |
8698 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
dcfc7dd4 | 8699 | offset += d_offset; |
7404fe1b AM |
8700 | } |
8701 | } | |
8702 | } | |
8703 | ||
8704 | reloc_write.put_r_offset(offset); | |
8705 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
8706 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
8707 | |
8708 | pwrite += reloc_size; | |
8709 | } | |
8710 | ||
8711 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
8712 | == reloc_view_size); | |
42cacb20 DE |
8713 | } |
8714 | ||
ec661b9d | 8715 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
8716 | // treatment. This is how we support equality comparisons of function |
8717 | // pointers across shared library boundaries, as described in the | |
8718 | // processor specific ABI supplement. | |
8719 | ||
8720 | template<int size, bool big_endian> | |
8721 | uint64_t | |
8722 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
8723 | { | |
cf43a2fe AM |
8724 | if (size == 32) |
8725 | { | |
8726 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
8727 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8728 | p != this->stub_tables_.end(); | |
8729 | ++p) | |
8730 | { | |
8731 | Address off = (*p)->find_plt_call_entry(gsym); | |
8732 | if (off != invalid_address) | |
8733 | return (*p)->stub_address() + off; | |
8734 | } | |
c9824451 | 8735 | } |
9055360d AM |
8736 | else if (this->abiversion() >= 2) |
8737 | { | |
faa2211d AM |
8738 | Address off = this->glink_section()->find_global_entry(gsym); |
8739 | if (off != invalid_address) | |
9055360d AM |
8740 | return this->glink_section()->global_entry_address() + off; |
8741 | } | |
ec661b9d | 8742 | gold_unreachable(); |
c9824451 AM |
8743 | } |
8744 | ||
8745 | // Return the PLT address to use for a local symbol. | |
8746 | template<int size, bool big_endian> | |
8747 | uint64_t | |
8748 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
8749 | const Relobj* object, | |
8750 | unsigned int symndx) const | |
8751 | { | |
8752 | if (size == 32) | |
8753 | { | |
8754 | const Sized_relobj<size, big_endian>* relobj | |
8755 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
8756 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8757 | p != this->stub_tables_.end(); | |
8758 | ++p) | |
8759 | { | |
8760 | Address off = (*p)->find_plt_call_entry(relobj->sized_relobj(), | |
8761 | symndx); | |
8762 | if (off != invalid_address) | |
8763 | return (*p)->stub_address() + off; | |
8764 | } | |
c9824451 | 8765 | } |
ec661b9d | 8766 | gold_unreachable(); |
c9824451 AM |
8767 | } |
8768 | ||
8769 | // Return the PLT address to use for a global symbol. | |
8770 | template<int size, bool big_endian> | |
8771 | uint64_t | |
8772 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
8773 | const Symbol* gsym) const | |
8774 | { | |
8775 | if (size == 32) | |
8776 | { | |
ec661b9d AM |
8777 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8778 | p != this->stub_tables_.end(); | |
8779 | ++p) | |
8780 | { | |
8781 | Address off = (*p)->find_plt_call_entry(gsym); | |
8782 | if (off != invalid_address) | |
8783 | return (*p)->stub_address() + off; | |
8784 | } | |
cf43a2fe | 8785 | } |
9055360d AM |
8786 | else if (this->abiversion() >= 2) |
8787 | { | |
faa2211d AM |
8788 | Address off = this->glink_section()->find_global_entry(gsym); |
8789 | if (off != invalid_address) | |
9055360d AM |
8790 | return this->glink_section()->global_entry_address() + off; |
8791 | } | |
ec661b9d | 8792 | gold_unreachable(); |
42cacb20 DE |
8793 | } |
8794 | ||
bd73a62d AM |
8795 | // Return the offset to use for the GOT_INDX'th got entry which is |
8796 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
8797 | template<int size, bool big_endian> | |
8798 | int64_t | |
8799 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
8800 | const Relobj* object, | |
8801 | unsigned int symndx, | |
8802 | unsigned int got_indx) const | |
8803 | { | |
8804 | const Powerpc_relobj<size, big_endian>* ppc_object | |
8805 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
8806 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
8807 | { | |
8808 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8809 | got_type <= GOT_TYPE_TPREL; | |
8810 | got_type = Got_type(got_type + 1)) | |
8811 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
8812 | { | |
8813 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
8814 | if (got_type == GOT_TYPE_TLSGD) | |
8815 | off += size / 8; | |
8816 | if (off == got_indx * (size / 8)) | |
8817 | { | |
8818 | if (got_type == GOT_TYPE_TPREL) | |
8819 | return -tp_offset; | |
8820 | else | |
8821 | return -dtp_offset; | |
8822 | } | |
8823 | } | |
8824 | } | |
8825 | gold_unreachable(); | |
8826 | } | |
8827 | ||
8828 | // Return the offset to use for the GOT_INDX'th got entry which is | |
8829 | // for global tls symbol GSYM. | |
8830 | template<int size, bool big_endian> | |
8831 | int64_t | |
8832 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
8833 | Symbol* gsym, | |
8834 | unsigned int got_indx) const | |
8835 | { | |
8836 | if (gsym->type() == elfcpp::STT_TLS) | |
8837 | { | |
8838 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8839 | got_type <= GOT_TYPE_TPREL; | |
8840 | got_type = Got_type(got_type + 1)) | |
8841 | if (gsym->has_got_offset(got_type)) | |
8842 | { | |
8843 | unsigned int off = gsym->got_offset(got_type); | |
8844 | if (got_type == GOT_TYPE_TLSGD) | |
8845 | off += size / 8; | |
8846 | if (off == got_indx * (size / 8)) | |
8847 | { | |
8848 | if (got_type == GOT_TYPE_TPREL) | |
8849 | return -tp_offset; | |
8850 | else | |
8851 | return -dtp_offset; | |
8852 | } | |
8853 | } | |
8854 | } | |
8855 | gold_unreachable(); | |
8856 | } | |
8857 | ||
42cacb20 DE |
8858 | // The selector for powerpc object files. |
8859 | ||
8860 | template<int size, bool big_endian> | |
8861 | class Target_selector_powerpc : public Target_selector | |
8862 | { | |
8863 | public: | |
8864 | Target_selector_powerpc() | |
edc27beb AM |
8865 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
8866 | size, big_endian, | |
03ef7571 ILT |
8867 | (size == 64 |
8868 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
8869 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
8870 | (size == 64 | |
8871 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
8872 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
8873 | { } |
8874 | ||
2e702c99 RM |
8875 | virtual Target* |
8876 | do_instantiate_target() | |
7f055c20 | 8877 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
8878 | }; |
8879 | ||
8880 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
8881 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
8882 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
8883 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
8884 | ||
decdd3bc AM |
8885 | // Instantiate these constants for -O0 |
8886 | template<int size, bool big_endian> | |
8887 | const int Output_data_glink<size, big_endian>::pltresolve_size; | |
8888 | template<int size, bool big_endian> | |
9055360d AM |
8889 | const typename Output_data_glink<size, big_endian>::Address |
8890 | Output_data_glink<size, big_endian>::invalid_address; | |
8891 | template<int size, bool big_endian> | |
decdd3bc AM |
8892 | const typename Stub_table<size, big_endian>::Address |
8893 | Stub_table<size, big_endian>::invalid_address; | |
8894 | template<int size, bool big_endian> | |
8895 | const typename Target_powerpc<size, big_endian>::Address | |
8896 | Target_powerpc<size, big_endian>::invalid_address; | |
8897 | ||
42cacb20 | 8898 | } // End anonymous namespace. |