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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
b90efa5b | 3 | // Copyright (C) 2008-2015 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 | ||
a3e60ddb AM |
65 | template<int size, bool big_endian> |
66 | class Target_powerpc; | |
67 | ||
68 | struct Stub_table_owner | |
69 | { | |
70 | Output_section* output_section; | |
71 | const Output_section::Input_section* owner; | |
72 | }; | |
73 | ||
4d9aa155 AM |
74 | inline bool |
75 | is_branch_reloc(unsigned int r_type); | |
76 | ||
cf43a2fe AM |
77 | template<int size, bool big_endian> |
78 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
79 | { | |
80 | public: | |
dd93cd0a | 81 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
82 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
83 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 84 | |
cf43a2fe AM |
85 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
86 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
87 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
d8f5a274 | 88 | special_(0), has_small_toc_reloc_(false), opd_valid_(false), |
a3e60ddb | 89 | opd_ent_(), access_from_map_(), has14_(), stub_table_index_(), |
b4f7960d AM |
90 | e_flags_(ehdr.get_e_flags()), st_other_() |
91 | { | |
92 | this->set_abiversion(0); | |
93 | } | |
cf43a2fe AM |
94 | |
95 | ~Powerpc_relobj() | |
96 | { } | |
97 | ||
b4f7960d AM |
98 | // Read the symbols then set up st_other vector. |
99 | void | |
100 | do_read_symbols(Read_symbols_data*); | |
101 | ||
c9269dff | 102 | // The .got2 section shndx. |
cf43a2fe AM |
103 | unsigned int |
104 | got2_shndx() const | |
105 | { | |
106 | if (size == 32) | |
c9269dff | 107 | return this->special_; |
cf43a2fe AM |
108 | else |
109 | return 0; | |
110 | } | |
111 | ||
c9269dff AM |
112 | // The .opd section shndx. |
113 | unsigned int | |
114 | opd_shndx() const | |
115 | { | |
116 | if (size == 32) | |
117 | return 0; | |
118 | else | |
119 | return this->special_; | |
120 | } | |
121 | ||
122 | // Init OPD entry arrays. | |
123 | void | |
124 | init_opd(size_t opd_size) | |
125 | { | |
126 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 127 | this->opd_ent_.resize(count); |
c9269dff AM |
128 | } |
129 | ||
130 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
131 | unsigned int |
132 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
133 | { |
134 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
135 | gold_assert(ndx < this->opd_ent_.size()); |
136 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 137 | if (value != NULL) |
bfdfa4cd AM |
138 | *value = this->opd_ent_[ndx].off; |
139 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
140 | } |
141 | ||
142 | // Set section and offset of function entry for .opd + R_OFF. | |
143 | void | |
dd93cd0a | 144 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
145 | { |
146 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
147 | gold_assert(ndx < this->opd_ent_.size()); |
148 | this->opd_ent_[ndx].shndx = shndx; | |
149 | this->opd_ent_[ndx].off = value; | |
150 | } | |
151 | ||
152 | // Return discard flag for .opd + R_OFF. | |
153 | bool | |
154 | get_opd_discard(Address r_off) const | |
155 | { | |
156 | size_t ndx = this->opd_ent_ndx(r_off); | |
157 | gold_assert(ndx < this->opd_ent_.size()); | |
158 | return this->opd_ent_[ndx].discard; | |
159 | } | |
160 | ||
161 | // Set discard flag for .opd + R_OFF. | |
162 | void | |
163 | set_opd_discard(Address r_off) | |
164 | { | |
165 | size_t ndx = this->opd_ent_ndx(r_off); | |
166 | gold_assert(ndx < this->opd_ent_.size()); | |
167 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
168 | } |
169 | ||
e81fea4d AM |
170 | bool |
171 | opd_valid() const | |
172 | { return this->opd_valid_; } | |
173 | ||
174 | void | |
175 | set_opd_valid() | |
176 | { this->opd_valid_ = true; } | |
177 | ||
c9269dff AM |
178 | // Examine .rela.opd to build info about function entry points. |
179 | void | |
180 | scan_opd_relocs(size_t reloc_count, | |
181 | const unsigned char* prelocs, | |
182 | const unsigned char* plocal_syms); | |
183 | ||
26a4e9cb AM |
184 | // Perform the Sized_relobj_file method, then set up opd info from |
185 | // .opd relocs. | |
c9269dff AM |
186 | void |
187 | do_read_relocs(Read_relocs_data*); | |
188 | ||
cf43a2fe AM |
189 | bool |
190 | do_find_special_sections(Read_symbols_data* sd); | |
191 | ||
ec4dbad3 AM |
192 | // Adjust this local symbol value. Return false if the symbol |
193 | // should be discarded from the output file. | |
194 | bool | |
195 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
196 | { | |
197 | if (size == 64 && this->opd_shndx() != 0) | |
198 | { | |
199 | bool is_ordinary; | |
200 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
201 | return true; | |
202 | if (this->get_opd_discard(lv->input_value())) | |
203 | return false; | |
204 | } | |
205 | return true; | |
206 | } | |
207 | ||
6c77229c AM |
208 | Access_from* |
209 | access_from_map() | |
210 | { return &this->access_from_map_; } | |
211 | ||
212 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
213 | // section at DST_OFF. | |
214 | void | |
efc6fa12 | 215 | add_reference(Relobj* src_obj, |
6c77229c AM |
216 | unsigned int src_indx, |
217 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
218 | { | |
219 | Section_id src_id(src_obj, src_indx); | |
220 | this->access_from_map_[dst_off].insert(src_id); | |
221 | } | |
222 | ||
223 | // Add a reference to the code section specified by the .opd entry | |
224 | // at DST_OFF | |
225 | void | |
226 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
227 | { | |
228 | size_t ndx = this->opd_ent_ndx(dst_off); | |
229 | if (ndx >= this->opd_ent_.size()) | |
230 | this->opd_ent_.resize(ndx + 1); | |
231 | this->opd_ent_[ndx].gc_mark = true; | |
232 | } | |
233 | ||
234 | void | |
235 | process_gc_mark(Symbol_table* symtab) | |
236 | { | |
237 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
238 | if (this->opd_ent_[i].gc_mark) | |
239 | { | |
240 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 241 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
242 | } |
243 | } | |
244 | ||
dd93cd0a AM |
245 | // Return offset in output GOT section that this object will use |
246 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
247 | Address | |
248 | toc_base_offset() const | |
249 | { return 0x8000; } | |
250 | ||
d8f5a274 AM |
251 | void |
252 | set_has_small_toc_reloc() | |
253 | { has_small_toc_reloc_ = true; } | |
254 | ||
255 | bool | |
256 | has_small_toc_reloc() const | |
257 | { return has_small_toc_reloc_; } | |
258 | ||
ec661b9d AM |
259 | void |
260 | set_has_14bit_branch(unsigned int shndx) | |
261 | { | |
262 | if (shndx >= this->has14_.size()) | |
263 | this->has14_.resize(shndx + 1); | |
264 | this->has14_[shndx] = true; | |
265 | } | |
266 | ||
267 | bool | |
268 | has_14bit_branch(unsigned int shndx) const | |
269 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
270 | ||
271 | void | |
a3e60ddb | 272 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 273 | { |
a3e60ddb AM |
274 | if (shndx >= this->stub_table_index_.size()) |
275 | this->stub_table_index_.resize(shndx + 1); | |
276 | this->stub_table_index_[shndx] = stub_index; | |
ec661b9d AM |
277 | } |
278 | ||
279 | Stub_table<size, big_endian>* | |
280 | stub_table(unsigned int shndx) | |
281 | { | |
a3e60ddb AM |
282 | if (shndx < this->stub_table_index_.size()) |
283 | { | |
284 | Target_powerpc<size, big_endian>* target | |
285 | = static_cast<Target_powerpc<size, big_endian>*>( | |
286 | parameters->sized_target<size, big_endian>()); | |
287 | unsigned int indx = this->stub_table_index_[shndx]; | |
288 | gold_assert(indx < target->stub_tables().size()); | |
289 | return target->stub_tables()[indx]; | |
290 | } | |
ec661b9d AM |
291 | return NULL; |
292 | } | |
293 | ||
a3e60ddb AM |
294 | void |
295 | clear_stub_table() | |
296 | { | |
297 | this->stub_table_index_.clear(); | |
298 | } | |
299 | ||
b4f7960d AM |
300 | int |
301 | abiversion() const | |
302 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
303 | ||
304 | // Set ABI version for input and output | |
305 | void | |
306 | set_abiversion(int ver); | |
307 | ||
308 | unsigned int | |
309 | ppc64_local_entry_offset(const Symbol* sym) const | |
310 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
311 | ||
312 | unsigned int | |
313 | ppc64_local_entry_offset(unsigned int symndx) const | |
314 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
315 | ||
cf43a2fe | 316 | private: |
bfdfa4cd AM |
317 | struct Opd_ent |
318 | { | |
319 | unsigned int shndx; | |
c6de8ed4 AM |
320 | bool discard : 1; |
321 | bool gc_mark : 1; | |
26a4e9cb | 322 | Address off; |
bfdfa4cd AM |
323 | }; |
324 | ||
325 | // Return index into opd_ent_ array for .opd entry at OFF. | |
326 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
327 | // apart when the language doesn't use the last 8-byte word, the | |
328 | // environment pointer. Thus dividing the entry section offset by | |
329 | // 16 will give an index into opd_ent_ that works for either layout | |
330 | // of .opd. (It leaves some elements of the vector unused when .opd | |
331 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
332 | // until relocations are processed, and in any case it is possible | |
333 | // for an object to have some entries spaced 16 bytes apart and | |
334 | // others 24 bytes apart.) | |
c9269dff AM |
335 | size_t |
336 | opd_ent_ndx(size_t off) const | |
337 | { return off >> 4;} | |
338 | ||
339 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. | |
340 | unsigned int special_; | |
bfdfa4cd | 341 | |
d8f5a274 AM |
342 | // For 64-bit, whether this object uses small model relocs to access |
343 | // the toc. | |
344 | bool has_small_toc_reloc_; | |
345 | ||
bfdfa4cd AM |
346 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
347 | // vector is valid. The flag could be made atomic and set in | |
348 | // do_read_relocs with memory_order_release and then tested with | |
349 | // memory_order_acquire, potentially resulting in fewer entries in | |
350 | // access_from_map_. | |
351 | bool opd_valid_; | |
352 | ||
c9269dff AM |
353 | // The first 8-byte word of an OPD entry gives the address of the |
354 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 355 | // relocation on this word. The following vector records the |
c9269dff | 356 | // section and offset specified by these relocations. |
bfdfa4cd AM |
357 | std::vector<Opd_ent> opd_ent_; |
358 | ||
e81fea4d | 359 | // References made to this object's .opd section when running |
bfdfa4cd AM |
360 | // gc_process_relocs for another object, before the opd_ent_ vector |
361 | // is valid for this object. | |
e81fea4d | 362 | Access_from access_from_map_; |
ec661b9d AM |
363 | |
364 | // Whether input section has a 14-bit branch reloc. | |
365 | std::vector<bool> has14_; | |
366 | ||
367 | // The stub table to use for a given input section. | |
a3e60ddb | 368 | std::vector<unsigned int> stub_table_index_; |
b4f7960d AM |
369 | |
370 | // Header e_flags | |
371 | elfcpp::Elf_Word e_flags_; | |
372 | ||
373 | // ELF st_other field for local symbols. | |
374 | std::vector<unsigned char> st_other_; | |
cf43a2fe AM |
375 | }; |
376 | ||
dc3714f3 AM |
377 | template<int size, bool big_endian> |
378 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
379 | { | |
380 | public: | |
381 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
382 | ||
383 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
384 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
385 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
b4f7960d AM |
386 | opd_shndx_(0), opd_ent_(), e_flags_(ehdr.get_e_flags()) |
387 | { | |
388 | this->set_abiversion(0); | |
389 | } | |
dc3714f3 AM |
390 | |
391 | ~Powerpc_dynobj() | |
392 | { } | |
393 | ||
394 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
395 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
396 | void | |
397 | do_read_symbols(Read_symbols_data*); | |
398 | ||
399 | // The .opd section shndx. | |
400 | unsigned int | |
401 | opd_shndx() const | |
402 | { | |
403 | return this->opd_shndx_; | |
404 | } | |
405 | ||
406 | // The .opd section address. | |
407 | Address | |
408 | opd_address() const | |
409 | { | |
410 | return this->opd_address_; | |
411 | } | |
412 | ||
413 | // Init OPD entry arrays. | |
414 | void | |
415 | init_opd(size_t opd_size) | |
416 | { | |
417 | size_t count = this->opd_ent_ndx(opd_size); | |
418 | this->opd_ent_.resize(count); | |
419 | } | |
420 | ||
421 | // Return section and offset of function entry for .opd + R_OFF. | |
422 | unsigned int | |
423 | get_opd_ent(Address r_off, Address* value = NULL) const | |
424 | { | |
425 | size_t ndx = this->opd_ent_ndx(r_off); | |
426 | gold_assert(ndx < this->opd_ent_.size()); | |
427 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
428 | if (value != NULL) | |
429 | *value = this->opd_ent_[ndx].off; | |
430 | return this->opd_ent_[ndx].shndx; | |
431 | } | |
432 | ||
433 | // Set section and offset of function entry for .opd + R_OFF. | |
434 | void | |
435 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
436 | { | |
437 | size_t ndx = this->opd_ent_ndx(r_off); | |
438 | gold_assert(ndx < this->opd_ent_.size()); | |
439 | this->opd_ent_[ndx].shndx = shndx; | |
440 | this->opd_ent_[ndx].off = value; | |
441 | } | |
442 | ||
b4f7960d AM |
443 | int |
444 | abiversion() const | |
445 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
446 | ||
447 | // Set ABI version for input and output. | |
448 | void | |
449 | set_abiversion(int ver); | |
450 | ||
dc3714f3 AM |
451 | private: |
452 | // Used to specify extent of executable sections. | |
453 | struct Sec_info | |
454 | { | |
455 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
456 | : start(start_), len(len_), shndx(shndx_) | |
457 | { } | |
458 | ||
459 | bool | |
460 | operator<(const Sec_info& that) const | |
461 | { return this->start < that.start; } | |
462 | ||
463 | Address start; | |
464 | Address len; | |
465 | unsigned int shndx; | |
466 | }; | |
467 | ||
468 | struct Opd_ent | |
469 | { | |
470 | unsigned int shndx; | |
471 | Address off; | |
472 | }; | |
473 | ||
474 | // Return index into opd_ent_ array for .opd entry at OFF. | |
475 | size_t | |
476 | opd_ent_ndx(size_t off) const | |
477 | { return off >> 4;} | |
478 | ||
479 | // For 64-bit the .opd section shndx and address. | |
480 | unsigned int opd_shndx_; | |
481 | Address opd_address_; | |
482 | ||
483 | // The first 8-byte word of an OPD entry gives the address of the | |
484 | // entry point of the function. Records the section and offset | |
485 | // corresponding to the address. Note that in dynamic objects, | |
486 | // offset is *not* relative to the section. | |
487 | std::vector<Opd_ent> opd_ent_; | |
b4f7960d AM |
488 | |
489 | // Header e_flags | |
490 | elfcpp::Elf_Word e_flags_; | |
dc3714f3 AM |
491 | }; |
492 | ||
42cacb20 DE |
493 | template<int size, bool big_endian> |
494 | class Target_powerpc : public Sized_target<size, big_endian> | |
495 | { | |
496 | public: | |
d83ce4e3 AM |
497 | typedef |
498 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 499 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 500 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
c9269dff | 501 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
502 | // Offset of tp and dtp pointers from start of TLS block. |
503 | static const Address tp_offset = 0x7000; | |
504 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
505 | |
506 | Target_powerpc() | |
507 | : Sized_target<size, big_endian>(&powerpc_info), | |
ec661b9d AM |
508 | got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL), |
509 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(elfcpp::R_POWERPC_COPY), | |
43819297 | 510 | tlsld_got_offset_(-1U), |
9e69ed50 | 511 | stub_tables_(), branch_lookup_table_(), branch_info_(), |
a3e60ddb AM |
512 | plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0), |
513 | stub_group_size_(0) | |
42cacb20 DE |
514 | { |
515 | } | |
516 | ||
2e702c99 | 517 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
518 | // garbage collection. |
519 | void | |
ad0f2072 | 520 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
521 | Layout* layout, |
522 | Sized_relobj_file<size, big_endian>* object, | |
523 | unsigned int data_shndx, | |
524 | unsigned int sh_type, | |
525 | const unsigned char* prelocs, | |
526 | size_t reloc_count, | |
527 | Output_section* output_section, | |
528 | bool needs_special_offset_handling, | |
529 | size_t local_symbol_count, | |
530 | const unsigned char* plocal_symbols); | |
6d03d481 | 531 | |
42cacb20 DE |
532 | // Scan the relocations to look for symbol adjustments. |
533 | void | |
ad0f2072 | 534 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 535 | Layout* layout, |
6fa2a40b | 536 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
537 | unsigned int data_shndx, |
538 | unsigned int sh_type, | |
539 | const unsigned char* prelocs, | |
540 | size_t reloc_count, | |
541 | Output_section* output_section, | |
542 | bool needs_special_offset_handling, | |
543 | size_t local_symbol_count, | |
544 | const unsigned char* plocal_symbols); | |
921b5322 AM |
545 | |
546 | // Map input .toc section to output .got section. | |
547 | const char* | |
548 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
549 | { | |
550 | if (size == 64 && strcmp(name, ".toc") == 0) | |
551 | { | |
552 | *plen = 4; | |
553 | return ".got"; | |
554 | } | |
555 | return NULL; | |
556 | } | |
557 | ||
f3a0ed29 AM |
558 | // Provide linker defined save/restore functions. |
559 | void | |
560 | define_save_restore_funcs(Layout*, Symbol_table*); | |
561 | ||
ec661b9d AM |
562 | // No stubs unless a final link. |
563 | bool | |
564 | do_may_relax() const | |
565 | { return !parameters->options().relocatable(); } | |
566 | ||
567 | bool | |
568 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
569 | ||
9d5781f8 AM |
570 | void |
571 | do_plt_fde_location(const Output_data*, unsigned char*, | |
572 | uint64_t*, off_t*) const; | |
573 | ||
ec661b9d AM |
574 | // Stash info about branches, for stub generation. |
575 | void | |
576 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
577 | unsigned int data_shndx, Address r_offset, | |
578 | unsigned int r_type, unsigned int r_sym, Address addend) | |
579 | { | |
580 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
581 | this->branch_info_.push_back(info); | |
582 | if (r_type == elfcpp::R_POWERPC_REL14 | |
583 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
584 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
585 | ppc_object->set_has_14bit_branch(data_shndx); | |
586 | } | |
587 | ||
f43ba157 AM |
588 | void |
589 | do_define_standard_symbols(Symbol_table*, Layout*); | |
590 | ||
42cacb20 DE |
591 | // Finalize the sections. |
592 | void | |
f59f41f3 | 593 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
594 | |
595 | // Return the value to use for a dynamic which requires special | |
596 | // treatment. | |
597 | uint64_t | |
598 | do_dynsym_value(const Symbol*) const; | |
599 | ||
c9824451 AM |
600 | // Return the PLT address to use for a local symbol. |
601 | uint64_t | |
602 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
603 | ||
604 | // Return the PLT address to use for a global symbol. | |
605 | uint64_t | |
606 | do_plt_address_for_global(const Symbol*) const; | |
607 | ||
bd73a62d AM |
608 | // Return the offset to use for the GOT_INDX'th got entry which is |
609 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
610 | int64_t | |
611 | do_tls_offset_for_local(const Relobj* object, | |
612 | unsigned int symndx, | |
613 | unsigned int got_indx) const; | |
614 | ||
615 | // Return the offset to use for the GOT_INDX'th got entry which is | |
616 | // for global tls symbol GSYM. | |
617 | int64_t | |
618 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
619 | ||
dc3714f3 AM |
620 | void |
621 | do_function_location(Symbol_location*) const; | |
622 | ||
4d9aa155 AM |
623 | bool |
624 | do_can_check_for_function_pointers() const | |
625 | { return true; } | |
626 | ||
bbec1a5d AM |
627 | // Adjust -fsplit-stack code which calls non-split-stack code. |
628 | void | |
629 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
630 | section_offset_type fnoffset, section_size_type fnsize, | |
631 | unsigned char* view, section_size_type view_size, | |
632 | std::string* from, std::string* to) const; | |
633 | ||
42cacb20 DE |
634 | // Relocate a section. |
635 | void | |
636 | relocate_section(const Relocate_info<size, big_endian>*, | |
637 | unsigned int sh_type, | |
638 | const unsigned char* prelocs, | |
639 | size_t reloc_count, | |
640 | Output_section* output_section, | |
641 | bool needs_special_offset_handling, | |
642 | unsigned char* view, | |
c9269dff | 643 | Address view_address, |
364c7fa5 ILT |
644 | section_size_type view_size, |
645 | const Reloc_symbol_changes*); | |
42cacb20 DE |
646 | |
647 | // Scan the relocs during a relocatable link. | |
648 | void | |
ad0f2072 | 649 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 650 | Layout* layout, |
6fa2a40b | 651 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
652 | unsigned int data_shndx, |
653 | unsigned int sh_type, | |
654 | const unsigned char* prelocs, | |
655 | size_t reloc_count, | |
656 | Output_section* output_section, | |
657 | bool needs_special_offset_handling, | |
658 | size_t local_symbol_count, | |
659 | const unsigned char* plocal_symbols, | |
660 | Relocatable_relocs*); | |
661 | ||
7404fe1b | 662 | // Emit relocations for a section. |
42cacb20 | 663 | void |
7404fe1b AM |
664 | relocate_relocs(const Relocate_info<size, big_endian>*, |
665 | unsigned int sh_type, | |
666 | const unsigned char* prelocs, | |
667 | size_t reloc_count, | |
668 | Output_section* output_section, | |
62fe925a RM |
669 | typename elfcpp::Elf_types<size>::Elf_Off |
670 | offset_in_output_section, | |
7404fe1b AM |
671 | const Relocatable_relocs*, |
672 | unsigned char*, | |
673 | Address view_address, | |
674 | section_size_type, | |
675 | unsigned char* reloc_view, | |
676 | section_size_type reloc_view_size); | |
42cacb20 DE |
677 | |
678 | // Return whether SYM is defined by the ABI. | |
679 | bool | |
9c2d0ef9 | 680 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 681 | { |
cf43a2fe | 682 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
683 | } |
684 | ||
685 | // Return the size of the GOT section. | |
686 | section_size_type | |
0e70b911 | 687 | got_size() const |
42cacb20 DE |
688 | { |
689 | gold_assert(this->got_ != NULL); | |
690 | return this->got_->data_size(); | |
691 | } | |
692 | ||
cf43a2fe AM |
693 | // Get the PLT section. |
694 | const Output_data_plt_powerpc<size, big_endian>* | |
695 | plt_section() const | |
696 | { | |
697 | gold_assert(this->plt_ != NULL); | |
698 | return this->plt_; | |
699 | } | |
700 | ||
e5d5f5ed AM |
701 | // Get the IPLT section. |
702 | const Output_data_plt_powerpc<size, big_endian>* | |
703 | iplt_section() const | |
704 | { | |
705 | gold_assert(this->iplt_ != NULL); | |
706 | return this->iplt_; | |
707 | } | |
708 | ||
cf43a2fe AM |
709 | // Get the .glink section. |
710 | const Output_data_glink<size, big_endian>* | |
711 | glink_section() const | |
712 | { | |
713 | gold_assert(this->glink_ != NULL); | |
714 | return this->glink_; | |
715 | } | |
716 | ||
9055360d AM |
717 | Output_data_glink<size, big_endian>* |
718 | glink_section() | |
719 | { | |
720 | gold_assert(this->glink_ != NULL); | |
721 | return this->glink_; | |
722 | } | |
723 | ||
9d5781f8 AM |
724 | bool has_glink() const |
725 | { return this->glink_ != NULL; } | |
726 | ||
cf43a2fe AM |
727 | // Get the GOT section. |
728 | const Output_data_got_powerpc<size, big_endian>* | |
729 | got_section() const | |
730 | { | |
731 | gold_assert(this->got_ != NULL); | |
732 | return this->got_; | |
733 | } | |
734 | ||
26a4e9cb AM |
735 | // Get the GOT section, creating it if necessary. |
736 | Output_data_got_powerpc<size, big_endian>* | |
737 | got_section(Symbol_table*, Layout*); | |
738 | ||
cf43a2fe AM |
739 | Object* |
740 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
741 | const elfcpp::Ehdr<size, big_endian>&); | |
742 | ||
0e70b911 CC |
743 | // Return the number of entries in the GOT. |
744 | unsigned int | |
745 | got_entry_count() const | |
746 | { | |
747 | if (this->got_ == NULL) | |
748 | return 0; | |
749 | return this->got_size() / (size / 8); | |
750 | } | |
751 | ||
752 | // Return the number of entries in the PLT. | |
753 | unsigned int | |
754 | plt_entry_count() const; | |
755 | ||
756 | // Return the offset of the first non-reserved PLT entry. | |
757 | unsigned int | |
b4f7960d AM |
758 | first_plt_entry_offset() const |
759 | { | |
760 | if (size == 32) | |
761 | return 0; | |
762 | if (this->abiversion() >= 2) | |
763 | return 16; | |
764 | return 24; | |
765 | } | |
0e70b911 CC |
766 | |
767 | // Return the size of each PLT entry. | |
768 | unsigned int | |
b4f7960d AM |
769 | plt_entry_size() const |
770 | { | |
771 | if (size == 32) | |
772 | return 4; | |
773 | if (this->abiversion() >= 2) | |
774 | return 8; | |
775 | return 24; | |
776 | } | |
0e70b911 | 777 | |
e81fea4d AM |
778 | // Add any special sections for this symbol to the gc work list. |
779 | // For powerpc64, this adds the code section of a function | |
780 | // descriptor. | |
781 | void | |
782 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
783 | ||
784 | // Handle target specific gc actions when adding a gc reference from | |
785 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
786 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
787 | // section of a function descriptor. | |
788 | void | |
789 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 790 | Relobj* src_obj, |
e81fea4d | 791 | unsigned int src_shndx, |
efc6fa12 | 792 | Relobj* dst_obj, |
e81fea4d AM |
793 | unsigned int dst_shndx, |
794 | Address dst_off) const; | |
795 | ||
ec661b9d AM |
796 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
797 | const Stub_tables& | |
798 | stub_tables() const | |
799 | { return this->stub_tables_; } | |
800 | ||
801 | const Output_data_brlt_powerpc<size, big_endian>* | |
802 | brlt_section() const | |
803 | { return this->brlt_section_; } | |
804 | ||
805 | void | |
806 | add_branch_lookup_table(Address to) | |
807 | { | |
808 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
809 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
810 | } | |
811 | ||
812 | Address | |
813 | find_branch_lookup_table(Address to) | |
814 | { | |
815 | typename Branch_lookup_table::const_iterator p | |
816 | = this->branch_lookup_table_.find(to); | |
817 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
818 | } | |
819 | ||
820 | void | |
821 | write_branch_lookup_table(unsigned char *oview) | |
822 | { | |
823 | for (typename Branch_lookup_table::const_iterator p | |
824 | = this->branch_lookup_table_.begin(); | |
825 | p != this->branch_lookup_table_.end(); | |
826 | ++p) | |
827 | { | |
4d5effb9 | 828 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
829 | } |
830 | } | |
831 | ||
9e69ed50 AM |
832 | bool |
833 | plt_thread_safe() const | |
834 | { return this->plt_thread_safe_; } | |
835 | ||
b4f7960d AM |
836 | int |
837 | abiversion () const | |
838 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } | |
839 | ||
840 | void | |
841 | set_abiversion (int ver) | |
842 | { | |
843 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
844 | flags &= ~elfcpp::EF_PPC64_ABI; | |
845 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
846 | this->set_processor_specific_flags(flags); | |
847 | } | |
848 | ||
849 | // Offset to to save stack slot | |
850 | int | |
851 | stk_toc () const | |
852 | { return this->abiversion() < 2 ? 40 : 24; } | |
853 | ||
42cacb20 DE |
854 | private: |
855 | ||
e3deeb9c AM |
856 | class Track_tls |
857 | { | |
858 | public: | |
859 | enum Tls_get_addr | |
860 | { | |
861 | NOT_EXPECTED = 0, | |
862 | EXPECTED = 1, | |
863 | SKIP = 2, | |
864 | NORMAL = 3 | |
865 | }; | |
866 | ||
867 | Track_tls() | |
868 | : tls_get_addr_(NOT_EXPECTED), | |
869 | relinfo_(NULL), relnum_(0), r_offset_(0) | |
870 | { } | |
871 | ||
872 | ~Track_tls() | |
873 | { | |
874 | if (this->tls_get_addr_ != NOT_EXPECTED) | |
875 | this->missing(); | |
876 | } | |
877 | ||
878 | void | |
879 | missing(void) | |
880 | { | |
881 | if (this->relinfo_ != NULL) | |
882 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
883 | _("missing expected __tls_get_addr call")); | |
884 | } | |
885 | ||
886 | void | |
887 | expect_tls_get_addr_call( | |
888 | const Relocate_info<size, big_endian>* relinfo, | |
889 | size_t relnum, | |
890 | Address r_offset) | |
891 | { | |
892 | this->tls_get_addr_ = EXPECTED; | |
893 | this->relinfo_ = relinfo; | |
894 | this->relnum_ = relnum; | |
895 | this->r_offset_ = r_offset; | |
896 | } | |
897 | ||
898 | void | |
899 | expect_tls_get_addr_call() | |
900 | { this->tls_get_addr_ = EXPECTED; } | |
901 | ||
902 | void | |
903 | skip_next_tls_get_addr_call() | |
904 | {this->tls_get_addr_ = SKIP; } | |
905 | ||
906 | Tls_get_addr | |
907 | maybe_skip_tls_get_addr_call(unsigned int r_type, const Symbol* gsym) | |
908 | { | |
909 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
910 | || r_type == elfcpp::R_PPC_PLTREL24) | |
911 | && gsym != NULL | |
912 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
913 | Tls_get_addr last_tls = this->tls_get_addr_; | |
914 | this->tls_get_addr_ = NOT_EXPECTED; | |
915 | if (is_tls_call && last_tls != EXPECTED) | |
916 | return last_tls; | |
917 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
918 | { | |
919 | this->missing(); | |
920 | return EXPECTED; | |
921 | } | |
922 | return NORMAL; | |
923 | } | |
924 | ||
925 | private: | |
926 | // What we're up to regarding calls to __tls_get_addr. | |
927 | // On powerpc, the branch and link insn making a call to | |
928 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
929 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
930 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
931 | // The marker relocation always comes first, and has the same | |
932 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
933 | // argument. This ties the arg setup insn with the call insn, | |
934 | // allowing ld to safely optimize away the call. We check that | |
935 | // every call to __tls_get_addr has a marker relocation, and that | |
936 | // every marker relocation is on a call to __tls_get_addr. | |
937 | Tls_get_addr tls_get_addr_; | |
938 | // Info about the last reloc for error message. | |
939 | const Relocate_info<size, big_endian>* relinfo_; | |
940 | size_t relnum_; | |
941 | Address r_offset_; | |
942 | }; | |
943 | ||
42cacb20 | 944 | // The class which scans relocations. |
e3deeb9c | 945 | class Scan : protected Track_tls |
42cacb20 DE |
946 | { |
947 | public: | |
bfdfa4cd AM |
948 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
949 | ||
42cacb20 | 950 | Scan() |
e3deeb9c | 951 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
952 | { } |
953 | ||
95a2c8d6 | 954 | static inline int |
88b8e639 | 955 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 956 | |
42cacb20 | 957 | inline void |
ad0f2072 | 958 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 959 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
960 | unsigned int data_shndx, |
961 | Output_section* output_section, | |
962 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
bfdfa4cd AM |
963 | const elfcpp::Sym<size, big_endian>& lsym, |
964 | bool is_discarded); | |
42cacb20 DE |
965 | |
966 | inline void | |
ad0f2072 | 967 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 968 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
969 | unsigned int data_shndx, |
970 | Output_section* output_section, | |
971 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
972 | Symbol* gsym); | |
973 | ||
21bb3914 ST |
974 | inline bool |
975 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
976 | Target_powerpc* , | |
f6971787 | 977 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 978 | unsigned int , |
2e702c99 RM |
979 | Output_section* , |
980 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 981 | unsigned int r_type, |
2e702c99 | 982 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
983 | { |
984 | // PowerPC64 .opd is not folded, so any identical function text | |
985 | // may be folded and we'll still keep function addresses distinct. | |
986 | // That means no reloc is of concern here. | |
987 | if (size == 64) | |
f6971787 AM |
988 | { |
989 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
990 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
991 | if (ppcobj->abiversion() == 1) | |
992 | return false; | |
993 | } | |
994 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
995 | // function code might be taking the address of the function. |
996 | return !is_branch_reloc(r_type); | |
997 | } | |
21bb3914 ST |
998 | |
999 | inline bool | |
1000 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1001 | Target_powerpc* , | |
f6971787 | 1002 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1003 | unsigned int , |
1004 | Output_section* , | |
4d9aa155 AM |
1005 | const elfcpp::Rela<size, big_endian>& , |
1006 | unsigned int r_type, | |
1007 | Symbol*) | |
1008 | { | |
1009 | // As above. | |
1010 | if (size == 64) | |
f6971787 AM |
1011 | { |
1012 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1013 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1014 | if (ppcobj->abiversion() == 1) | |
1015 | return false; | |
1016 | } | |
4d9aa155 AM |
1017 | return !is_branch_reloc(r_type); |
1018 | } | |
21bb3914 | 1019 | |
b3ccdeb5 | 1020 | static bool |
9055360d AM |
1021 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1022 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1023 | unsigned int r_type, bool report_err); |
1024 | ||
42cacb20 DE |
1025 | private: |
1026 | static void | |
6fa2a40b | 1027 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1028 | unsigned int r_type); |
1029 | ||
1030 | static void | |
6fa2a40b | 1031 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1032 | unsigned int r_type, Symbol*); |
1033 | ||
1034 | static void | |
1035 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1036 | Target_powerpc* target); | |
1037 | ||
1038 | void | |
1039 | check_non_pic(Relobj*, unsigned int r_type); | |
1040 | ||
1041 | // Whether we have issued an error about a non-PIC compilation. | |
1042 | bool issued_non_pic_error_; | |
1043 | }; | |
1044 | ||
1611bc4a AM |
1045 | bool |
1046 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1047 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1048 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1049 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1050 | |
42cacb20 | 1051 | // The class which implements relocation. |
e3deeb9c | 1052 | class Relocate : protected Track_tls |
42cacb20 DE |
1053 | { |
1054 | public: | |
dd93cd0a AM |
1055 | // Use 'at' branch hints when true, 'y' when false. |
1056 | // FIXME maybe: set this with an option. | |
1057 | static const bool is_isa_v2 = true; | |
1058 | ||
dd93cd0a | 1059 | Relocate() |
e3deeb9c | 1060 | : Track_tls() |
dd93cd0a AM |
1061 | { } |
1062 | ||
42cacb20 DE |
1063 | // Do a relocation. Return false if the caller should not issue |
1064 | // any warnings about this relocation. | |
1065 | inline bool | |
1066 | relocate(const Relocate_info<size, big_endian>*, Target_powerpc*, | |
031cdbed ILT |
1067 | Output_section*, size_t relnum, |
1068 | const elfcpp::Rela<size, big_endian>&, | |
42cacb20 DE |
1069 | unsigned int r_type, const Sized_symbol<size>*, |
1070 | const Symbol_value<size>*, | |
1071 | unsigned char*, | |
1072 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
1073 | section_size_type); | |
42cacb20 DE |
1074 | }; |
1075 | ||
168a4726 AM |
1076 | class Relocate_comdat_behavior |
1077 | { | |
1078 | public: | |
1079 | // Decide what the linker should do for relocations that refer to | |
1080 | // discarded comdat sections. | |
1081 | inline Comdat_behavior | |
1082 | get(const char* name) | |
1083 | { | |
1084 | gold::Default_comdat_behavior default_behavior; | |
1085 | Comdat_behavior ret = default_behavior.get(name); | |
1086 | if (ret == CB_WARNING) | |
1087 | { | |
1088 | if (size == 32 | |
1089 | && (strcmp(name, ".fixup") == 0 | |
1090 | || strcmp(name, ".got2") == 0)) | |
1091 | ret = CB_IGNORE; | |
1092 | if (size == 64 | |
1093 | && (strcmp(name, ".opd") == 0 | |
1094 | || strcmp(name, ".toc") == 0 | |
1095 | || strcmp(name, ".toc1") == 0)) | |
1096 | ret = CB_IGNORE; | |
1097 | } | |
1098 | return ret; | |
1099 | } | |
1100 | }; | |
1101 | ||
42cacb20 DE |
1102 | // A class which returns the size required for a relocation type, |
1103 | // used while scanning relocs during a relocatable link. | |
1104 | class Relocatable_size_for_reloc | |
1105 | { | |
1106 | public: | |
1107 | unsigned int | |
cf43a2fe AM |
1108 | get_size_for_reloc(unsigned int, Relobj*) |
1109 | { | |
1110 | gold_unreachable(); | |
1111 | return 0; | |
1112 | } | |
42cacb20 DE |
1113 | }; |
1114 | ||
dd93cd0a AM |
1115 | // Optimize the TLS relocation type based on what we know about the |
1116 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1117 | // known at link time. | |
1118 | ||
1119 | tls::Tls_optimization | |
1120 | optimize_tls_gd(bool is_final) | |
1121 | { | |
1122 | // If we are generating a shared library, then we can't do anything | |
1123 | // in the linker. | |
1124 | if (parameters->options().shared()) | |
1125 | return tls::TLSOPT_NONE; | |
1126 | ||
1127 | if (!is_final) | |
1128 | return tls::TLSOPT_TO_IE; | |
1129 | return tls::TLSOPT_TO_LE; | |
1130 | } | |
1131 | ||
1132 | tls::Tls_optimization | |
1133 | optimize_tls_ld() | |
1134 | { | |
1135 | if (parameters->options().shared()) | |
1136 | return tls::TLSOPT_NONE; | |
1137 | ||
1138 | return tls::TLSOPT_TO_LE; | |
1139 | } | |
1140 | ||
1141 | tls::Tls_optimization | |
1142 | optimize_tls_ie(bool is_final) | |
1143 | { | |
1144 | if (!is_final || parameters->options().shared()) | |
1145 | return tls::TLSOPT_NONE; | |
1146 | ||
1147 | return tls::TLSOPT_TO_LE; | |
1148 | } | |
cf43a2fe | 1149 | |
cf43a2fe AM |
1150 | // Create glink. |
1151 | void | |
1152 | make_glink_section(Layout*); | |
42cacb20 | 1153 | |
cf43a2fe AM |
1154 | // Create the PLT section. |
1155 | void | |
40b469d7 | 1156 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1157 | |
e5d5f5ed | 1158 | void |
40b469d7 | 1159 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1160 | |
ec661b9d AM |
1161 | void |
1162 | make_brlt_section(Layout*); | |
1163 | ||
42cacb20 DE |
1164 | // Create a PLT entry for a global symbol. |
1165 | void | |
ec661b9d | 1166 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1167 | |
1168 | // Create a PLT entry for a local IFUNC symbol. | |
1169 | void | |
40b469d7 | 1170 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1171 | Sized_relobj_file<size, big_endian>*, |
1172 | unsigned int); | |
1173 | ||
42cacb20 | 1174 | |
dd93cd0a AM |
1175 | // Create a GOT entry for local dynamic __tls_get_addr. |
1176 | unsigned int | |
1177 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1178 | Sized_relobj_file<size, big_endian>* object); | |
1179 | ||
42cacb20 | 1180 | unsigned int |
dd93cd0a AM |
1181 | tlsld_got_offset() const |
1182 | { | |
1183 | return this->tlsld_got_offset_; | |
1184 | } | |
42cacb20 | 1185 | |
42cacb20 DE |
1186 | // Get the dynamic reloc section, creating it if necessary. |
1187 | Reloc_section* | |
1188 | rela_dyn_section(Layout*); | |
1189 | ||
b3ccdeb5 AM |
1190 | // Similarly, but for ifunc symbols get the one for ifunc. |
1191 | Reloc_section* | |
1192 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1193 | ||
42cacb20 DE |
1194 | // Copy a relocation against a global symbol. |
1195 | void | |
ef9beddf | 1196 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1197 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1198 | unsigned int shndx, Output_section* output_section, |
1199 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1200 | { | |
1201 | this->copy_relocs_.copy_reloc(symtab, layout, | |
1202 | symtab->get_sized_symbol<size>(sym), | |
1203 | object, shndx, output_section, | |
1204 | reloc, this->rela_dyn_section(layout)); | |
1205 | } | |
1206 | ||
0cfdc767 | 1207 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1208 | void |
a3e60ddb | 1209 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1210 | |
1211 | // Sort output sections by address. | |
1212 | struct Sort_sections | |
1213 | { | |
1214 | bool | |
1215 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1216 | { return sec1->address() < sec2->address(); } | |
1217 | }; | |
1218 | ||
1219 | class Branch_info | |
1220 | { | |
1221 | public: | |
1222 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1223 | unsigned int data_shndx, | |
1224 | Address r_offset, | |
1225 | unsigned int r_type, | |
1226 | unsigned int r_sym, | |
1227 | Address addend) | |
1228 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
1229 | r_type_(r_type), r_sym_(r_sym), addend_(addend) | |
1230 | { } | |
1231 | ||
1232 | ~Branch_info() | |
1233 | { } | |
1234 | ||
1235 | // If this branch needs a plt call stub, or a long branch stub, make one. | |
a3e60ddb | 1236 | bool |
ec661b9d AM |
1237 | make_stub(Stub_table<size, big_endian>*, |
1238 | Stub_table<size, big_endian>*, | |
1239 | Symbol_table*) const; | |
1240 | ||
1241 | private: | |
1242 | // The branch location.. | |
1243 | Powerpc_relobj<size, big_endian>* object_; | |
1244 | unsigned int shndx_; | |
1245 | Address offset_; | |
1246 | // ..and the branch type and destination. | |
1247 | unsigned int r_type_; | |
1248 | unsigned int r_sym_; | |
1249 | Address addend_; | |
1250 | }; | |
1251 | ||
42cacb20 DE |
1252 | // Information about this specific target which we pass to the |
1253 | // general Target structure. | |
1254 | static Target::Target_info powerpc_info; | |
1255 | ||
1256 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1257 | // These values are exposed to the ABI in an incremental link. |
1258 | // Do not renumber existing values without changing the version | |
1259 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1260 | enum Got_type |
1261 | { | |
dd93cd0a AM |
1262 | GOT_TYPE_STANDARD, |
1263 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1264 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1265 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1266 | }; |
1267 | ||
ec661b9d | 1268 | // The GOT section. |
cf43a2fe | 1269 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1270 | // The PLT section. This is a container for a table of addresses, |
1271 | // and their relocations. Each address in the PLT has a dynamic | |
1272 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1273 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1274 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1275 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1276 | // linker adds a stub that loads the PLT entry into ctr then | |
1277 | // branches to ctr. There may be more than one stub for each PLT | |
1278 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1279 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1280 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1281 | // The IPLT section. Like plt_, this is a container for a table of |
1282 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1283 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1284 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1285 | // entry in .glink for lazy resolution, and the relocation section | |
1286 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1287 | // the relocation section may contain relocations against | |
1288 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1289 | // relocation section will appear at the end of other dynamic | |
1290 | // relocations, so that ld.so applies these relocations after other | |
1291 | // dynamic relocations. In a static executable, the relocation | |
1292 | // section is emitted and marked with __rela_iplt_start and | |
1293 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1294 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
ec661b9d AM |
1295 | // Section holding long branch destinations. |
1296 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1297 | // The .glink section. | |
cf43a2fe | 1298 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1299 | // The dynamic reloc section. |
42cacb20 DE |
1300 | Reloc_section* rela_dyn_; |
1301 | // Relocs saved to avoid a COPY reloc. | |
1302 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
dd93cd0a AM |
1303 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1304 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1305 | |
1306 | Stub_tables stub_tables_; | |
1307 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1308 | Branch_lookup_table branch_lookup_table_; | |
1309 | ||
1310 | typedef std::vector<Branch_info> Branches; | |
1311 | Branches branch_info_; | |
9e69ed50 AM |
1312 | |
1313 | bool plt_thread_safe_; | |
a3e60ddb AM |
1314 | |
1315 | bool relax_failed_; | |
1316 | int relax_fail_count_; | |
1317 | int32_t stub_group_size_; | |
42cacb20 DE |
1318 | }; |
1319 | ||
1320 | template<> | |
1321 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1322 | { | |
1323 | 32, // size | |
1324 | true, // is_big_endian | |
1325 | elfcpp::EM_PPC, // machine_code | |
1326 | false, // has_make_symbol | |
1327 | false, // has_resolve | |
1328 | false, // has_code_fill | |
1329 | true, // is_default_stack_executable | |
b3ce541e | 1330 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1331 | '\0', // wrap_char |
1332 | "/usr/lib/ld.so.1", // dynamic_linker | |
1333 | 0x10000000, // default_text_segment_address | |
1334 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1335 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1336 | false, // isolate_execinstr |
1337 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1338 | elfcpp::SHN_UNDEF, // small_common_shndx |
1339 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1340 | 0, // small_common_section_flags | |
05a352e6 DK |
1341 | 0, // large_common_section_flags |
1342 | NULL, // attributes_section | |
a67858e0 CC |
1343 | NULL, // attributes_vendor |
1344 | "_start" // entry_symbol_name | |
42cacb20 DE |
1345 | }; |
1346 | ||
1347 | template<> | |
1348 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1349 | { | |
1350 | 32, // size | |
1351 | false, // is_big_endian | |
1352 | elfcpp::EM_PPC, // machine_code | |
1353 | false, // has_make_symbol | |
1354 | false, // has_resolve | |
1355 | false, // has_code_fill | |
1356 | true, // is_default_stack_executable | |
b3ce541e | 1357 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1358 | '\0', // wrap_char |
1359 | "/usr/lib/ld.so.1", // dynamic_linker | |
1360 | 0x10000000, // default_text_segment_address | |
1361 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1362 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1363 | false, // isolate_execinstr |
1364 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1365 | elfcpp::SHN_UNDEF, // small_common_shndx |
1366 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1367 | 0, // small_common_section_flags | |
05a352e6 DK |
1368 | 0, // large_common_section_flags |
1369 | NULL, // attributes_section | |
a67858e0 CC |
1370 | NULL, // attributes_vendor |
1371 | "_start" // entry_symbol_name | |
42cacb20 DE |
1372 | }; |
1373 | ||
1374 | template<> | |
1375 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1376 | { | |
1377 | 64, // size | |
1378 | true, // is_big_endian | |
1379 | elfcpp::EM_PPC64, // machine_code | |
1380 | false, // has_make_symbol | |
1381 | false, // has_resolve | |
1382 | false, // has_code_fill | |
1383 | true, // is_default_stack_executable | |
b3ce541e | 1384 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1385 | '\0', // wrap_char |
1386 | "/usr/lib/ld.so.1", // dynamic_linker | |
1387 | 0x10000000, // default_text_segment_address | |
1388 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1389 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1390 | false, // isolate_execinstr |
1391 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1392 | elfcpp::SHN_UNDEF, // small_common_shndx |
1393 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1394 | 0, // small_common_section_flags | |
05a352e6 DK |
1395 | 0, // large_common_section_flags |
1396 | NULL, // attributes_section | |
a67858e0 CC |
1397 | NULL, // attributes_vendor |
1398 | "_start" // entry_symbol_name | |
42cacb20 DE |
1399 | }; |
1400 | ||
1401 | template<> | |
1402 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1403 | { | |
1404 | 64, // size | |
1405 | false, // is_big_endian | |
1406 | elfcpp::EM_PPC64, // machine_code | |
1407 | false, // has_make_symbol | |
1408 | false, // has_resolve | |
1409 | false, // has_code_fill | |
1410 | true, // is_default_stack_executable | |
b3ce541e | 1411 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1412 | '\0', // wrap_char |
1413 | "/usr/lib/ld.so.1", // dynamic_linker | |
1414 | 0x10000000, // default_text_segment_address | |
1415 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1416 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1417 | false, // isolate_execinstr |
1418 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1419 | elfcpp::SHN_UNDEF, // small_common_shndx |
1420 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1421 | 0, // small_common_section_flags | |
05a352e6 DK |
1422 | 0, // large_common_section_flags |
1423 | NULL, // attributes_section | |
a67858e0 CC |
1424 | NULL, // attributes_vendor |
1425 | "_start" // entry_symbol_name | |
42cacb20 DE |
1426 | }; |
1427 | ||
dd93cd0a AM |
1428 | inline bool |
1429 | is_branch_reloc(unsigned int r_type) | |
1430 | { | |
1431 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1432 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1433 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1434 | || r_type == elfcpp::R_POWERPC_REL14 | |
1435 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1436 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1437 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1438 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1439 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1440 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1441 | } | |
1442 | ||
1443 | // If INSN is an opcode that may be used with an @tls operand, return | |
1444 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1445 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1446 | uint32_t | |
1447 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1448 | { | |
1449 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1450 | return 0; | |
1451 | ||
1452 | unsigned int rtra; | |
1453 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1454 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1455 | else if (((insn >> 16) & 0x1f) == reg) | |
1456 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1457 | else | |
1458 | return 0; | |
1459 | ||
1460 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1461 | // add -> addi | |
1462 | insn = 14 << 26; | |
1463 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1464 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1465 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1466 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1467 | // load and store indexed -> dform | |
1468 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1469 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1470 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1471 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1472 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1473 | // lwax -> lwa | |
1474 | insn = (58 << 26) | 2; | |
1475 | else | |
1476 | return 0; | |
1477 | insn |= rtra; | |
1478 | return insn; | |
1479 | } | |
1480 | ||
dd93cd0a | 1481 | |
42cacb20 DE |
1482 | template<int size, bool big_endian> |
1483 | class Powerpc_relocate_functions | |
1484 | { | |
dd93cd0a | 1485 | public: |
f4baf0d4 | 1486 | enum Overflow_check |
dd93cd0a | 1487 | { |
f4baf0d4 AM |
1488 | CHECK_NONE, |
1489 | CHECK_SIGNED, | |
b80eed39 AM |
1490 | CHECK_UNSIGNED, |
1491 | CHECK_BITFIELD, | |
1492 | CHECK_LOW_INSN, | |
1493 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1494 | }; |
1495 | ||
f4baf0d4 | 1496 | enum Status |
dd93cd0a | 1497 | { |
f4baf0d4 AM |
1498 | STATUS_OK, |
1499 | STATUS_OVERFLOW | |
1500 | }; | |
dd93cd0a | 1501 | |
42cacb20 | 1502 | private: |
c9269dff | 1503 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff AM |
1504 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1505 | ||
dd93cd0a AM |
1506 | template<int valsize> |
1507 | static inline bool | |
1508 | has_overflow_signed(Address value) | |
1509 | { | |
1510 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1511 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1512 | limit <<= ((valsize - 1) >> 1); | |
1513 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1514 | return value + limit > (limit << 1) - 1; | |
1515 | } | |
1516 | ||
1517 | template<int valsize> | |
1518 | static inline bool | |
b80eed39 | 1519 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1520 | { |
1521 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1522 | limit <<= ((valsize - 1) >> 1); | |
1523 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1524 | return value > (limit << 1) - 1; |
1525 | } | |
1526 | ||
1527 | template<int valsize> | |
1528 | static inline bool | |
1529 | has_overflow_bitfield(Address value) | |
1530 | { | |
1531 | return (has_overflow_unsigned<valsize>(value) | |
1532 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1533 | } |
1534 | ||
1535 | template<int valsize> | |
f4baf0d4 AM |
1536 | static inline Status |
1537 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1538 | { |
f4baf0d4 | 1539 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1540 | { |
1541 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1542 | return STATUS_OVERFLOW; |
dd93cd0a | 1543 | } |
b80eed39 AM |
1544 | else if (overflow == CHECK_UNSIGNED) |
1545 | { | |
1546 | if (has_overflow_unsigned<valsize>(value)) | |
1547 | return STATUS_OVERFLOW; | |
1548 | } | |
f4baf0d4 | 1549 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1550 | { |
1551 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1552 | return STATUS_OVERFLOW; |
dd93cd0a | 1553 | } |
f4baf0d4 | 1554 | return STATUS_OK; |
dd93cd0a AM |
1555 | } |
1556 | ||
cf43a2fe | 1557 | // Do a simple RELA relocation |
0cfb0717 | 1558 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1559 | static inline Status |
1560 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1561 | { |
0cfb0717 | 1562 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1563 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1564 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1565 | return overflowed<valsize>(value, overflow); |
1566 | } | |
1567 | ||
0cfb0717 | 1568 | template<int fieldsize, int valsize> |
f4baf0d4 | 1569 | static inline Status |
42cacb20 DE |
1570 | rela(unsigned char* view, |
1571 | unsigned int right_shift, | |
0cfb0717 | 1572 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1573 | Address value, |
f4baf0d4 | 1574 | Overflow_check overflow) |
42cacb20 | 1575 | { |
0cfb0717 | 1576 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1577 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1578 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1579 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1580 | val &= ~dst_mask; |
1581 | reloc &= dst_mask; | |
0cfb0717 | 1582 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1583 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1584 | } |
1585 | ||
cf43a2fe | 1586 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1587 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1588 | static inline Status |
1589 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1590 | { |
0cfb0717 | 1591 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1592 | return overflowed<valsize>(value, overflow); |
1593 | } | |
1594 | ||
0cfb0717 | 1595 | template<int fieldsize, int valsize> |
f4baf0d4 | 1596 | static inline Status |
cf43a2fe AM |
1597 | rela_ua(unsigned char* view, |
1598 | unsigned int right_shift, | |
0cfb0717 | 1599 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1600 | Address value, |
f4baf0d4 | 1601 | Overflow_check overflow) |
42cacb20 | 1602 | { |
0cfb0717 | 1603 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1604 | Valtype; |
0cfb0717 | 1605 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1606 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1607 | val &= ~dst_mask; |
1608 | reloc &= dst_mask; | |
0cfb0717 | 1609 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1610 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1611 | } |
1612 | ||
42cacb20 | 1613 | public: |
dd93cd0a | 1614 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1615 | static inline void |
dd93cd0a | 1616 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1617 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1618 | |
dd93cd0a | 1619 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1620 | static inline void |
dd93cd0a | 1621 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1622 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1623 | |
1624 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1625 | static inline Status |
1626 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1627 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1628 | |
1629 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1630 | static inline Status |
1631 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1632 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1633 | |
1634 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1635 | static inline Status |
1636 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1637 | { |
0cfb0717 AM |
1638 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1639 | value, overflow); | |
f4baf0d4 AM |
1640 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1641 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1642 | return stat; |
1643 | } | |
42cacb20 DE |
1644 | |
1645 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1646 | static inline Status |
1647 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1648 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 1649 | |
dd93cd0a | 1650 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1651 | static inline Status |
1652 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1653 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 1654 | |
dd93cd0a | 1655 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1656 | static inline Status |
1657 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1658 | { |
0cfb0717 | 1659 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 1660 | if ((value & 3) != 0) |
f4baf0d4 | 1661 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
1662 | return stat; |
1663 | } | |
42cacb20 | 1664 | |
42cacb20 DE |
1665 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1666 | static inline void | |
dd93cd0a | 1667 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 1668 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1669 | |
c9269dff | 1670 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1671 | static inline void |
dd93cd0a AM |
1672 | addr16_ha(unsigned char* view, Address value) |
1673 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1674 | |
dd93cd0a | 1675 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1676 | static inline void |
dd93cd0a | 1677 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 1678 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1679 | |
dd93cd0a | 1680 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1681 | static inline void |
dd93cd0a AM |
1682 | addr16_ha2(unsigned char* view, Address value) |
1683 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1684 | |
dd93cd0a | 1685 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1686 | static inline void |
dd93cd0a | 1687 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 1688 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1689 | |
dd93cd0a | 1690 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1691 | static inline void |
dd93cd0a AM |
1692 | addr16_ha3(unsigned char* view, Address value) |
1693 | { This::addr16_hi3(view, value + 0x8000); } | |
1694 | ||
1695 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1696 | static inline Status |
1697 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1698 | { |
0cfb0717 | 1699 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
1700 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1701 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1702 | return stat; |
1703 | } | |
cf43a2fe AM |
1704 | }; |
1705 | ||
b4f7960d AM |
1706 | // Set ABI version for input and output. |
1707 | ||
1708 | template<int size, bool big_endian> | |
1709 | void | |
1710 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
1711 | { | |
1712 | this->e_flags_ |= ver; | |
1713 | if (this->abiversion() != 0) | |
1714 | { | |
1715 | Target_powerpc<size, big_endian>* target = | |
1716 | static_cast<Target_powerpc<size, big_endian>*>( | |
1717 | parameters->sized_target<size, big_endian>()); | |
1718 | if (target->abiversion() == 0) | |
1719 | target->set_abiversion(this->abiversion()); | |
1720 | else if (target->abiversion() != this->abiversion()) | |
1721 | gold_error(_("%s: ABI version %d is not compatible " | |
1722 | "with ABI version %d output"), | |
1723 | this->name().c_str(), | |
1724 | this->abiversion(), target->abiversion()); | |
1725 | ||
1726 | } | |
1727 | } | |
1728 | ||
c9269dff AM |
1729 | // Stash away the index of .got2 or .opd in a relocatable object, if |
1730 | // such a section exists. | |
cf43a2fe AM |
1731 | |
1732 | template<int size, bool big_endian> | |
1733 | bool | |
1734 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1735 | Read_symbols_data* sd) | |
1736 | { | |
c9269dff AM |
1737 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1738 | const unsigned char* namesu = sd->section_names->data(); | |
1739 | const char* names = reinterpret_cast<const char*>(namesu); | |
1740 | section_size_type names_size = sd->section_names_size; | |
1741 | const unsigned char* s; | |
1742 | ||
dc3714f3 AM |
1743 | s = this->template find_shdr<size, big_endian>(pshdrs, |
1744 | size == 32 ? ".got2" : ".opd", | |
1745 | names, names_size, NULL); | |
c9269dff AM |
1746 | if (s != NULL) |
1747 | { | |
1748 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1749 | this->special_ = ndx; | |
b4f7960d AM |
1750 | if (size == 64) |
1751 | { | |
1752 | if (this->abiversion() == 0) | |
1753 | this->set_abiversion(1); | |
1754 | else if (this->abiversion() > 1) | |
1755 | gold_error(_("%s: .opd invalid in abiv%d"), | |
1756 | this->name().c_str(), this->abiversion()); | |
1757 | } | |
c9269dff AM |
1758 | } |
1759 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); | |
1760 | } | |
1761 | ||
1762 | // Examine .rela.opd to build info about function entry points. | |
1763 | ||
1764 | template<int size, bool big_endian> | |
1765 | void | |
1766 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
1767 | size_t reloc_count, | |
1768 | const unsigned char* prelocs, | |
1769 | const unsigned char* plocal_syms) | |
1770 | { | |
1771 | if (size == 64) | |
cf43a2fe | 1772 | { |
c9269dff AM |
1773 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
1774 | Reltype; | |
1775 | const int reloc_size | |
1776 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
1777 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
ec4dbad3 AM |
1778 | Address expected_off = 0; |
1779 | bool regular = true; | |
1780 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
1781 | |
1782 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 1783 | { |
c9269dff AM |
1784 | Reltype reloc(prelocs); |
1785 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
1786 | = reloc.get_r_info(); | |
1787 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
1788 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
1789 | { | |
1790 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1791 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
1792 | bool is_ordinary; | |
1793 | unsigned int shndx; | |
1794 | if (r_sym < this->local_symbol_count()) | |
1795 | { | |
1796 | typename elfcpp::Sym<size, big_endian> | |
1797 | lsym(plocal_syms + r_sym * sym_size); | |
1798 | shndx = lsym.get_st_shndx(); | |
1799 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1800 | value = lsym.get_st_value(); | |
1801 | } | |
1802 | else | |
1803 | shndx = this->symbol_section_and_value(r_sym, &value, | |
1804 | &is_ordinary); | |
1805 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
1806 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
1807 | if (i == 2) |
1808 | { | |
1809 | expected_off = reloc.get_r_offset(); | |
1810 | opd_ent_size = expected_off; | |
1811 | } | |
1812 | else if (expected_off != reloc.get_r_offset()) | |
1813 | regular = false; | |
1814 | expected_off += opd_ent_size; | |
1815 | } | |
1816 | else if (r_type == elfcpp::R_PPC64_TOC) | |
1817 | { | |
1818 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
1819 | regular = false; | |
1820 | } | |
1821 | else | |
1822 | { | |
1823 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
1824 | this->name().c_str(), r_type); | |
1825 | regular = false; | |
c9269dff AM |
1826 | } |
1827 | } | |
ec4dbad3 AM |
1828 | if (reloc_count <= 2) |
1829 | opd_ent_size = this->section_size(this->opd_shndx()); | |
1830 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
1831 | regular = false; | |
1832 | if (!regular) | |
1833 | { | |
1834 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
1835 | this->name().c_str()); | |
1836 | opd_ent_size = 0; | |
1837 | } | |
c9269dff AM |
1838 | } |
1839 | } | |
1840 | ||
1841 | template<int size, bool big_endian> | |
1842 | void | |
1843 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
1844 | { | |
1845 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
1846 | if (size == 64) | |
1847 | { | |
1848 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
1849 | p != rd->relocs.end(); | |
1850 | ++p) | |
1851 | { | |
1852 | if (p->data_shndx == this->opd_shndx()) | |
1853 | { | |
ec4dbad3 AM |
1854 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
1855 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
1856 | if (opd_size != 0) | |
1857 | { | |
1858 | this->init_opd(opd_size); | |
1859 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
1860 | rd->local_symbols->data()); | |
1861 | } | |
c9269dff AM |
1862 | break; |
1863 | } | |
cf43a2fe AM |
1864 | } |
1865 | } | |
cf43a2fe AM |
1866 | } |
1867 | ||
b4f7960d AM |
1868 | // Read the symbols then set up st_other vector. |
1869 | ||
1870 | template<int size, bool big_endian> | |
1871 | void | |
1872 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1873 | { | |
f35c4853 | 1874 | this->base_read_symbols(sd); |
b4f7960d AM |
1875 | if (size == 64) |
1876 | { | |
1877 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1878 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1879 | const unsigned int loccount = this->do_local_symbol_count(); | |
1880 | if (loccount != 0) | |
1881 | { | |
1882 | this->st_other_.resize(loccount); | |
1883 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1884 | off_t locsize = loccount * sym_size; | |
1885 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
1886 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
1887 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
1888 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
1889 | locsize, true, false); | |
1890 | psyms += sym_size; | |
1891 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
1892 | { | |
1893 | elfcpp::Sym<size, big_endian> sym(psyms); | |
1894 | unsigned char st_other = sym.get_st_other(); | |
1895 | this->st_other_[i] = st_other; | |
1896 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1897 | { | |
1898 | if (this->abiversion() == 0) | |
1899 | this->set_abiversion(2); | |
1900 | else if (this->abiversion() < 2) | |
1901 | gold_error(_("%s: local symbol %d has invalid st_other" | |
1902 | " for ABI version 1"), | |
1903 | this->name().c_str(), i); | |
1904 | } | |
1905 | } | |
1906 | } | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | template<int size, bool big_endian> | |
1911 | void | |
1912 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
1913 | { | |
1914 | this->e_flags_ |= ver; | |
1915 | if (this->abiversion() != 0) | |
1916 | { | |
1917 | Target_powerpc<size, big_endian>* target = | |
1918 | static_cast<Target_powerpc<size, big_endian>*>( | |
1919 | parameters->sized_target<size, big_endian>()); | |
1920 | if (target->abiversion() == 0) | |
1921 | target->set_abiversion(this->abiversion()); | |
1922 | else if (target->abiversion() != this->abiversion()) | |
1923 | gold_error(_("%s: ABI version %d is not compatible " | |
1924 | "with ABI version %d output"), | |
1925 | this->name().c_str(), | |
1926 | this->abiversion(), target->abiversion()); | |
1927 | ||
1928 | } | |
1929 | } | |
1930 | ||
f35c4853 | 1931 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
1932 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
1933 | ||
1934 | template<int size, bool big_endian> | |
1935 | void | |
1936 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1937 | { | |
f35c4853 | 1938 | this->base_read_symbols(sd); |
dc3714f3 AM |
1939 | if (size == 64) |
1940 | { | |
1941 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1942 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1943 | const unsigned char* namesu = sd->section_names->data(); | |
1944 | const char* names = reinterpret_cast<const char*>(namesu); | |
1945 | const unsigned char* s = NULL; | |
1946 | const unsigned char* opd; | |
1947 | section_size_type opd_size; | |
1948 | ||
1949 | // Find and read .opd section. | |
1950 | while (1) | |
1951 | { | |
1952 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
1953 | sd->section_names_size, | |
1954 | s); | |
1955 | if (s == NULL) | |
1956 | return; | |
1957 | ||
1958 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
1959 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
1960 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
1961 | { | |
b4f7960d AM |
1962 | if (this->abiversion() == 0) |
1963 | this->set_abiversion(1); | |
1964 | else if (this->abiversion() > 1) | |
1965 | gold_error(_("%s: .opd invalid in abiv%d"), | |
1966 | this->name().c_str(), this->abiversion()); | |
1967 | ||
dc3714f3 AM |
1968 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
1969 | this->opd_address_ = shdr.get_sh_addr(); | |
1970 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
1971 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
1972 | true, false); | |
1973 | break; | |
1974 | } | |
1975 | } | |
1976 | ||
1977 | // Build set of executable sections. | |
1978 | // Using a set is probably overkill. There is likely to be only | |
1979 | // a few executable sections, typically .init, .text and .fini, | |
1980 | // and they are generally grouped together. | |
1981 | typedef std::set<Sec_info> Exec_sections; | |
1982 | Exec_sections exec_sections; | |
1983 | s = pshdrs; | |
1984 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
1985 | { | |
1986 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
1987 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
1988 | && ((shdr.get_sh_flags() | |
1989 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
1990 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
1991 | && shdr.get_sh_size() != 0) | |
1992 | { | |
1993 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
1994 | shdr.get_sh_size(), i)); | |
1995 | } | |
1996 | } | |
1997 | if (exec_sections.empty()) | |
1998 | return; | |
1999 | ||
2000 | // Look over the OPD entries. This is complicated by the fact | |
2001 | // that some binaries will use two-word entries while others | |
2002 | // will use the standard three-word entries. In most cases | |
2003 | // the third word (the environment pointer for languages like | |
2004 | // Pascal) is unused and will be zero. If the third word is | |
2005 | // used it should not be pointing into executable sections, | |
2006 | // I think. | |
2007 | this->init_opd(opd_size); | |
2008 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2009 | { | |
2010 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2011 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2012 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2013 | if (val == 0) | |
2014 | // Chances are that this is the third word of an OPD entry. | |
2015 | continue; | |
2016 | typename Exec_sections::const_iterator e | |
2017 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2018 | if (e != exec_sections.begin()) | |
2019 | { | |
2020 | --e; | |
2021 | if (e->start <= val && val < e->start + e->len) | |
2022 | { | |
2023 | // We have an address in an executable section. | |
2024 | // VAL ought to be the function entry, set it up. | |
2025 | this->set_opd_ent(p - opd, e->shndx, val); | |
2026 | // Skip second word of OPD entry, the TOC pointer. | |
2027 | p += 8; | |
2028 | } | |
2029 | } | |
2030 | // If we didn't match any executable sections, we likely | |
2031 | // have a non-zero third word in the OPD entry. | |
2032 | } | |
2033 | } | |
2034 | } | |
2035 | ||
f43ba157 | 2036 | // Set up some symbols. |
26a4e9cb AM |
2037 | |
2038 | template<int size, bool big_endian> | |
2039 | void | |
f43ba157 AM |
2040 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2041 | Symbol_table* symtab, | |
2042 | Layout* layout) | |
26a4e9cb AM |
2043 | { |
2044 | if (size == 32) | |
2045 | { | |
bb66a627 AM |
2046 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2047 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2048 | // non-relative dynamic relocs). The proper value will be |
2049 | // updated later. | |
2050 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2051 | if (gotsym != NULL && gotsym->is_undefined()) | |
2052 | { | |
2053 | Target_powerpc<size, big_endian>* target = | |
2054 | static_cast<Target_powerpc<size, big_endian>*>( | |
2055 | parameters->sized_target<size, big_endian>()); | |
2056 | Output_data_got_powerpc<size, big_endian>* got | |
2057 | = target->got_section(symtab, layout); | |
2058 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2059 | Symbol_table::PREDEFINED, | |
2060 | got, 0, 0, | |
2061 | elfcpp::STT_OBJECT, | |
bb66a627 | 2062 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2063 | elfcpp::STV_HIDDEN, 0, |
2064 | false, false); | |
2065 | } | |
2066 | ||
2067 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2068 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2069 | if (sdasym != NULL && sdasym->is_undefined()) | |
2070 | { | |
2071 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2072 | Output_section* os | |
2073 | = layout->add_output_section_data(".sdata", 0, | |
2074 | elfcpp::SHF_ALLOC | |
2075 | | elfcpp::SHF_WRITE, | |
2076 | sdata, ORDER_SMALL_DATA, false); | |
2077 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2078 | Symbol_table::PREDEFINED, | |
2079 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2080 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2081 | 0, false, false); | |
2082 | } | |
2083 | } | |
b4f7960d AM |
2084 | else |
2085 | { | |
2086 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2087 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2088 | if (gotsym != NULL && gotsym->is_undefined()) | |
2089 | { | |
2090 | Target_powerpc<size, big_endian>* target = | |
2091 | static_cast<Target_powerpc<size, big_endian>*>( | |
2092 | parameters->sized_target<size, big_endian>()); | |
2093 | Output_data_got_powerpc<size, big_endian>* got | |
2094 | = target->got_section(symtab, layout); | |
2095 | symtab->define_in_output_data(".TOC.", NULL, | |
2096 | Symbol_table::PREDEFINED, | |
2097 | got, 0x8000, 0, | |
2098 | elfcpp::STT_OBJECT, | |
2099 | elfcpp::STB_LOCAL, | |
2100 | elfcpp::STV_HIDDEN, 0, | |
2101 | false, false); | |
2102 | } | |
2103 | } | |
26a4e9cb AM |
2104 | } |
2105 | ||
cf43a2fe AM |
2106 | // Set up PowerPC target specific relobj. |
2107 | ||
2108 | template<int size, bool big_endian> | |
2109 | Object* | |
2110 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2111 | const std::string& name, | |
2112 | Input_file* input_file, | |
2113 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2114 | { | |
2115 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2116 | // ET_EXEC files are valid input for --just-symbols/-R, |
2117 | // and we treat them as relocatable objects. | |
2118 | if (et == elfcpp::ET_REL | |
2119 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2120 | { |
2121 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2122 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2123 | obj->setup(); |
2124 | return obj; | |
2125 | } | |
2126 | else if (et == elfcpp::ET_DYN) | |
2127 | { | |
dc3714f3 AM |
2128 | Powerpc_dynobj<size, big_endian>* obj = |
2129 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2130 | obj->setup(); |
2131 | return obj; | |
2132 | } | |
2133 | else | |
2134 | { | |
c9269dff | 2135 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2136 | return NULL; |
2137 | } | |
2138 | } | |
2139 | ||
2140 | template<int size, bool big_endian> | |
2141 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2142 | { | |
2143 | public: | |
2144 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2145 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2146 | ||
2147 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2148 | : Output_data_got<size, big_endian>(), | |
2149 | symtab_(symtab), layout_(layout), | |
2150 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2151 | header_index_(size == 32 ? 0x2000 : 0) | |
9e69ed50 | 2152 | { } |
cf43a2fe | 2153 | |
e84fe78f AM |
2154 | // Override all the Output_data_got methods we use so as to first call |
2155 | // reserve_ent(). | |
2156 | bool | |
2157 | add_global(Symbol* gsym, unsigned int got_type) | |
2158 | { | |
2159 | this->reserve_ent(); | |
2160 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2161 | } | |
2162 | ||
2163 | bool | |
2164 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2165 | { | |
2166 | this->reserve_ent(); | |
2167 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2168 | } | |
2169 | ||
2170 | bool | |
2171 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2172 | { return this->add_global_plt(gsym, got_type); } | |
2173 | ||
2174 | void | |
2175 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2176 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2177 | { | |
2178 | this->reserve_ent(); | |
2179 | Output_data_got<size, big_endian>:: | |
2180 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2181 | } | |
2182 | ||
2183 | void | |
2184 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2185 | Output_data_reloc_generic* rel_dyn, | |
2186 | unsigned int r_type_1, unsigned int r_type_2) | |
2187 | { | |
2188 | this->reserve_ent(2); | |
2189 | Output_data_got<size, big_endian>:: | |
2190 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2191 | } | |
2192 | ||
2193 | bool | |
2194 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2195 | { | |
2196 | this->reserve_ent(); | |
2197 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2198 | got_type); | |
2199 | } | |
2200 | ||
2201 | bool | |
2202 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2203 | { | |
2204 | this->reserve_ent(); | |
2205 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2206 | got_type); | |
2207 | } | |
2208 | ||
2209 | bool | |
2210 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2211 | { return this->add_local_plt(object, sym_index, got_type); } | |
2212 | ||
2213 | void | |
2214 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2215 | unsigned int got_type, | |
2216 | Output_data_reloc_generic* rel_dyn, | |
2217 | unsigned int r_type) | |
2218 | { | |
2219 | this->reserve_ent(2); | |
2220 | Output_data_got<size, big_endian>:: | |
2221 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2222 | } | |
2223 | ||
2224 | unsigned int | |
2225 | add_constant(Valtype constant) | |
2226 | { | |
2227 | this->reserve_ent(); | |
2228 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2229 | } | |
2230 | ||
dd93cd0a AM |
2231 | unsigned int |
2232 | add_constant_pair(Valtype c1, Valtype c2) | |
2233 | { | |
2234 | this->reserve_ent(2); | |
e84fe78f | 2235 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2236 | } |
2237 | ||
2238 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2239 | unsigned int |
2240 | g_o_t() const | |
2241 | { | |
2242 | return this->got_offset(this->header_index_); | |
42cacb20 | 2243 | } |
cf43a2fe | 2244 | |
dd93cd0a AM |
2245 | // Offset of base used to access the GOT/TOC. |
2246 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2247 | Valtype |
dd93cd0a AM |
2248 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2249 | { | |
2250 | if (size == 32) | |
2251 | return this->g_o_t(); | |
2252 | else | |
2253 | return (this->output_section()->address() | |
2254 | + object->toc_base_offset() | |
2255 | - this->address()); | |
2256 | } | |
2257 | ||
cf43a2fe AM |
2258 | // Ensure our GOT has a header. |
2259 | void | |
2260 | set_final_data_size() | |
2261 | { | |
2262 | if (this->header_ent_cnt_ != 0) | |
2263 | this->make_header(); | |
2264 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2265 | } | |
2266 | ||
2267 | // First word of GOT header needs some values that are not | |
2268 | // handled by Output_data_got so poke them in here. | |
2269 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2270 | void | |
2271 | do_write(Output_file* of) | |
2272 | { | |
c9824451 AM |
2273 | Valtype val = 0; |
2274 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2275 | val = this->layout_->dynamic_section()->address(); | |
2276 | if (size == 64) | |
2277 | val = this->output_section()->address() + 0x8000; | |
2278 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2279 | Output_data_got<size, big_endian>::do_write(of); |
2280 | } | |
2281 | ||
2282 | private: | |
2283 | void | |
2284 | reserve_ent(unsigned int cnt = 1) | |
2285 | { | |
2286 | if (this->header_ent_cnt_ == 0) | |
2287 | return; | |
2288 | if (this->num_entries() + cnt > this->header_index_) | |
2289 | this->make_header(); | |
2290 | } | |
2291 | ||
2292 | void | |
2293 | make_header() | |
2294 | { | |
2295 | this->header_ent_cnt_ = 0; | |
2296 | this->header_index_ = this->num_entries(); | |
2297 | if (size == 32) | |
2298 | { | |
2299 | Output_data_got<size, big_endian>::add_constant(0); | |
2300 | Output_data_got<size, big_endian>::add_constant(0); | |
2301 | Output_data_got<size, big_endian>::add_constant(0); | |
2302 | ||
2303 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2304 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2305 | if (gotsym != NULL) | |
2306 | { | |
2307 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2308 | sym->set_value(this->g_o_t()); | |
2309 | } | |
2310 | else | |
2311 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2312 | Symbol_table::PREDEFINED, | |
2313 | this, this->g_o_t(), 0, | |
2314 | elfcpp::STT_OBJECT, | |
2315 | elfcpp::STB_LOCAL, | |
2316 | elfcpp::STV_HIDDEN, 0, | |
2317 | false, false); | |
cf43a2fe AM |
2318 | } |
2319 | else | |
2320 | Output_data_got<size, big_endian>::add_constant(0); | |
2321 | } | |
2322 | ||
2323 | // Stashed pointers. | |
2324 | Symbol_table* symtab_; | |
2325 | Layout* layout_; | |
2326 | ||
2327 | // GOT header size. | |
2328 | unsigned int header_ent_cnt_; | |
2329 | // GOT header index. | |
2330 | unsigned int header_index_; | |
42cacb20 DE |
2331 | }; |
2332 | ||
2333 | // Get the GOT section, creating it if necessary. | |
2334 | ||
2335 | template<int size, bool big_endian> | |
cf43a2fe | 2336 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2337 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2338 | Layout* layout) | |
2339 | { | |
2340 | if (this->got_ == NULL) | |
2341 | { | |
2342 | gold_assert(symtab != NULL && layout != NULL); | |
2343 | ||
cf43a2fe AM |
2344 | this->got_ |
2345 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2346 | |
2347 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2348 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2349 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2350 | } |
2351 | ||
2352 | return this->got_; | |
2353 | } | |
2354 | ||
2355 | // Get the dynamic reloc section, creating it if necessary. | |
2356 | ||
2357 | template<int size, bool big_endian> | |
2358 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2359 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2360 | { | |
2361 | if (this->rela_dyn_ == NULL) | |
2362 | { | |
2363 | gold_assert(layout != NULL); | |
2364 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2365 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2366 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2367 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2368 | } |
2369 | return this->rela_dyn_; | |
2370 | } | |
2371 | ||
b3ccdeb5 AM |
2372 | // Similarly, but for ifunc symbols get the one for ifunc. |
2373 | ||
2374 | template<int size, bool big_endian> | |
2375 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2376 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2377 | Layout* layout, | |
2378 | bool for_ifunc) | |
2379 | { | |
2380 | if (!for_ifunc) | |
2381 | return this->rela_dyn_section(layout); | |
2382 | ||
2383 | if (this->iplt_ == NULL) | |
2384 | this->make_iplt_section(symtab, layout); | |
2385 | return this->iplt_->rel_plt(); | |
2386 | } | |
2387 | ||
ec661b9d AM |
2388 | class Stub_control |
2389 | { | |
2390 | public: | |
2391 | // Determine the stub group size. The group size is the absolute | |
2392 | // value of the parameter --stub-group-size. If --stub-group-size | |
2393 | // is passed a negative value, we restrict stubs to be always before | |
2394 | // the stubbed branches. | |
a3e60ddb | 2395 | Stub_control(int32_t size, bool no_size_errors) |
ec661b9d | 2396 | : state_(NO_GROUP), stub_group_size_(abs(size)), |
0cfb0717 | 2397 | stub14_group_size_(abs(size) >> 10), |
a3e60ddb AM |
2398 | stubs_always_before_branch_(size < 0), |
2399 | suppress_size_errors_(no_size_errors), | |
ec661b9d AM |
2400 | group_end_addr_(0), owner_(NULL), output_section_(NULL) |
2401 | { | |
ec661b9d AM |
2402 | } |
2403 | ||
2404 | // Return true iff input section can be handled by current stub | |
2405 | // group. | |
2406 | bool | |
2407 | can_add_to_stub_group(Output_section* o, | |
2408 | const Output_section::Input_section* i, | |
2409 | bool has14); | |
2410 | ||
2411 | const Output_section::Input_section* | |
2412 | owner() | |
2413 | { return owner_; } | |
2414 | ||
2415 | Output_section* | |
2416 | output_section() | |
2417 | { return output_section_; } | |
2418 | ||
a20605cf AM |
2419 | void |
2420 | set_output_and_owner(Output_section* o, | |
2421 | const Output_section::Input_section* i) | |
2422 | { | |
2423 | this->output_section_ = o; | |
2424 | this->owner_ = i; | |
2425 | } | |
2426 | ||
ec661b9d AM |
2427 | private: |
2428 | typedef enum | |
2429 | { | |
2430 | NO_GROUP, | |
2431 | FINDING_STUB_SECTION, | |
2432 | HAS_STUB_SECTION | |
2433 | } State; | |
2434 | ||
2435 | State state_; | |
2436 | uint32_t stub_group_size_; | |
2437 | uint32_t stub14_group_size_; | |
2438 | bool stubs_always_before_branch_; | |
2439 | bool suppress_size_errors_; | |
2440 | uint64_t group_end_addr_; | |
2441 | const Output_section::Input_section* owner_; | |
2442 | Output_section* output_section_; | |
2443 | }; | |
2444 | ||
0cfdc767 | 2445 | // Return true iff input section can be handled by current stub |
ec661b9d AM |
2446 | // group. |
2447 | ||
2448 | bool | |
2449 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2450 | const Output_section::Input_section* i, | |
2451 | bool has14) | |
2452 | { | |
2453 | uint32_t group_size | |
2454 | = has14 ? this->stub14_group_size_ : this->stub_group_size_; | |
2455 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; | |
2456 | uint64_t this_size; | |
2457 | uint64_t start_addr = o->address(); | |
2458 | ||
2459 | if (whole_sec) | |
2460 | // .init and .fini sections are pasted together to form a single | |
2461 | // function. We can't be adding stubs in the middle of the function. | |
2462 | this_size = o->data_size(); | |
2463 | else | |
2464 | { | |
2465 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
2466 | this_size = i->data_size(); | |
2467 | } | |
2468 | uint64_t end_addr = start_addr + this_size; | |
2469 | bool toobig = this_size > group_size; | |
2470 | ||
2471 | if (toobig && !this->suppress_size_errors_) | |
2472 | gold_warning(_("%s:%s exceeds group size"), | |
2473 | i->relobj()->name().c_str(), | |
2474 | i->relobj()->section_name(i->shndx()).c_str()); | |
2475 | ||
2476 | if (this->state_ != HAS_STUB_SECTION | |
0cfdc767 AM |
2477 | && (!whole_sec || this->output_section_ != o) |
2478 | && (this->state_ == NO_GROUP | |
2479 | || this->group_end_addr_ - end_addr < group_size)) | |
ec661b9d AM |
2480 | { |
2481 | this->owner_ = i; | |
2482 | this->output_section_ = o; | |
2483 | } | |
2484 | ||
2485 | if (this->state_ == NO_GROUP) | |
2486 | { | |
2487 | this->state_ = FINDING_STUB_SECTION; | |
2488 | this->group_end_addr_ = end_addr; | |
2489 | } | |
2490 | else if (this->group_end_addr_ - start_addr < group_size) | |
2491 | ; | |
2492 | // Adding this section would make the group larger than GROUP_SIZE. | |
2493 | else if (this->state_ == FINDING_STUB_SECTION | |
2494 | && !this->stubs_always_before_branch_ | |
2495 | && !toobig) | |
2496 | { | |
2497 | // But wait, there's more! Input sections up to GROUP_SIZE | |
2498 | // bytes before the stub table can be handled by it too. | |
2499 | this->state_ = HAS_STUB_SECTION; | |
2500 | this->group_end_addr_ = end_addr; | |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | this->state_ = NO_GROUP; | |
2505 | return false; | |
2506 | } | |
2507 | return true; | |
2508 | } | |
2509 | ||
2510 | // Look over all the input sections, deciding where to place stubs. | |
2511 | ||
2512 | template<int size, bool big_endian> | |
2513 | void | |
2514 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
2515 | const Task*, |
2516 | bool no_size_errors) | |
ec661b9d | 2517 | { |
a3e60ddb | 2518 | Stub_control stub_control(this->stub_group_size_, no_size_errors); |
ec661b9d AM |
2519 | |
2520 | // Group input sections and insert stub table | |
a3e60ddb AM |
2521 | Stub_table_owner* table_owner = NULL; |
2522 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
2523 | Layout::Section_list section_list; |
2524 | layout->get_executable_sections(§ion_list); | |
2525 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
2526 | for (Layout::Section_list::reverse_iterator o = section_list.rbegin(); | |
2527 | o != section_list.rend(); | |
2528 | ++o) | |
2529 | { | |
2530 | typedef Output_section::Input_section_list Input_section_list; | |
2531 | for (Input_section_list::const_reverse_iterator i | |
2532 | = (*o)->input_sections().rbegin(); | |
2533 | i != (*o)->input_sections().rend(); | |
2534 | ++i) | |
2535 | { | |
a3e60ddb AM |
2536 | if (i->is_input_section() |
2537 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
2538 | { |
2539 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
2540 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
2541 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
2542 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
2543 | { | |
a3e60ddb AM |
2544 | table_owner->output_section = stub_control.output_section(); |
2545 | table_owner->owner = stub_control.owner(); | |
a20605cf | 2546 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 2547 | table_owner = NULL; |
ec661b9d | 2548 | } |
a3e60ddb AM |
2549 | if (table_owner == NULL) |
2550 | { | |
2551 | table_owner = new Stub_table_owner; | |
2552 | tables.push_back(table_owner); | |
2553 | } | |
2554 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
2555 | } |
2556 | } | |
2557 | } | |
a3e60ddb | 2558 | if (table_owner != NULL) |
0cfdc767 AM |
2559 | { |
2560 | const Output_section::Input_section* i = stub_control.owner(); | |
a3e60ddb AM |
2561 | |
2562 | if (tables.size() >= 2 && tables[tables.size() - 2]->owner == i) | |
0cfdc767 AM |
2563 | { |
2564 | // Corner case. A new stub group was made for the first | |
2565 | // section (last one looked at here) for some reason, but | |
2566 | // the first section is already being used as the owner for | |
2567 | // a stub table for following sections. Force it into that | |
2568 | // stub group. | |
a3e60ddb AM |
2569 | tables.pop_back(); |
2570 | delete table_owner; | |
0cfdc767 AM |
2571 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
2572 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
a3e60ddb AM |
2573 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); |
2574 | } | |
2575 | else | |
2576 | { | |
2577 | table_owner->output_section = stub_control.output_section(); | |
2578 | table_owner->owner = i; | |
0cfdc767 | 2579 | } |
a3e60ddb AM |
2580 | } |
2581 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
2582 | t != tables.end(); | |
2583 | ++t) | |
2584 | { | |
2585 | Stub_table<size, big_endian>* stub_table; | |
2586 | ||
2587 | if ((*t)->owner->is_input_section()) | |
2588 | stub_table = new Stub_table<size, big_endian>(this, | |
2589 | (*t)->output_section, | |
2590 | (*t)->owner); | |
2591 | else if ((*t)->owner->is_relaxed_input_section()) | |
2592 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
2593 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 2594 | else |
a3e60ddb AM |
2595 | gold_unreachable(); |
2596 | this->stub_tables_.push_back(stub_table); | |
2597 | delete *t; | |
0cfdc767 | 2598 | } |
ec661b9d AM |
2599 | } |
2600 | ||
a3e60ddb AM |
2601 | static unsigned long |
2602 | max_branch_delta (unsigned int r_type) | |
2603 | { | |
2604 | if (r_type == elfcpp::R_POWERPC_REL14 | |
2605 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
2606 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
2607 | return 1L << 15; | |
2608 | if (r_type == elfcpp::R_POWERPC_REL24 | |
2609 | || r_type == elfcpp::R_PPC_PLTREL24 | |
2610 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
2611 | return 1L << 25; | |
2612 | return 0; | |
2613 | } | |
2614 | ||
ec661b9d AM |
2615 | // If this branch needs a plt call stub, or a long branch stub, make one. |
2616 | ||
2617 | template<int size, bool big_endian> | |
a3e60ddb | 2618 | bool |
ec661b9d AM |
2619 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
2620 | Stub_table<size, big_endian>* stub_table, | |
2621 | Stub_table<size, big_endian>* ifunc_stub_table, | |
2622 | Symbol_table* symtab) const | |
2623 | { | |
2624 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
2625 | if (sym != NULL && sym->is_forwarder()) | |
2626 | sym = symtab->resolve_forwards(sym); | |
2627 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); | |
88b8e639 AM |
2628 | Target_powerpc<size, big_endian>* target = |
2629 | static_cast<Target_powerpc<size, big_endian>*>( | |
2630 | parameters->sized_target<size, big_endian>()); | |
ec661b9d | 2631 | if (gsym != NULL |
88b8e639 | 2632 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
2633 | : this->object_->local_has_plt_offset(this->r_sym_)) |
2634 | { | |
9055360d AM |
2635 | if (size == 64 |
2636 | && gsym != NULL | |
2637 | && target->abiversion() >= 2 | |
2638 | && !parameters->options().output_is_position_independent() | |
2639 | && !is_branch_reloc(this->r_type_)) | |
2640 | target->glink_section()->add_global_entry(gsym); | |
2641 | else | |
ec661b9d | 2642 | { |
9055360d AM |
2643 | if (stub_table == NULL) |
2644 | stub_table = this->object_->stub_table(this->shndx_); | |
2645 | if (stub_table == NULL) | |
2646 | { | |
2647 | // This is a ref from a data section to an ifunc symbol. | |
2648 | stub_table = ifunc_stub_table; | |
2649 | } | |
2650 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
2651 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2652 | if (from != invalid_address) | |
2653 | from += (this->object_->output_section(this->shndx_)->address() | |
2654 | + this->offset_); | |
9055360d | 2655 | if (gsym != NULL) |
a3e60ddb AM |
2656 | return stub_table->add_plt_call_entry(from, |
2657 | this->object_, gsym, | |
2658 | this->r_type_, this->addend_); | |
9055360d | 2659 | else |
a3e60ddb AM |
2660 | return stub_table->add_plt_call_entry(from, |
2661 | this->object_, this->r_sym_, | |
2662 | this->r_type_, this->addend_); | |
ec661b9d | 2663 | } |
ec661b9d AM |
2664 | } |
2665 | else | |
2666 | { | |
cbcb23fa | 2667 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
2668 | if (max_branch_offset == 0) |
2669 | return true; | |
ec661b9d AM |
2670 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2671 | gold_assert(from != invalid_address); | |
2672 | from += (this->object_->output_section(this->shndx_)->address() | |
2673 | + this->offset_); | |
2674 | Address to; | |
2675 | if (gsym != NULL) | |
2676 | { | |
2677 | switch (gsym->source()) | |
2678 | { | |
2679 | case Symbol::FROM_OBJECT: | |
2680 | { | |
2681 | Object* symobj = gsym->object(); | |
2682 | if (symobj->is_dynamic() | |
2683 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 2684 | return true; |
ec661b9d AM |
2685 | bool is_ordinary; |
2686 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
2687 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 2688 | return true; |
ec661b9d AM |
2689 | } |
2690 | break; | |
2691 | ||
2692 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 2693 | return true; |
ec661b9d AM |
2694 | |
2695 | default: | |
2696 | break; | |
2697 | } | |
2698 | Symbol_table::Compute_final_value_status status; | |
2699 | to = symtab->compute_final_value<size>(gsym, &status); | |
2700 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 2701 | return true; |
9055360d AM |
2702 | if (size == 64) |
2703 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
2704 | } |
2705 | else | |
2706 | { | |
2707 | const Symbol_value<size>* psymval | |
2708 | = this->object_->local_symbol(this->r_sym_); | |
2709 | Symbol_value<size> symval; | |
2710 | typedef Sized_relobj_file<size, big_endian> ObjType; | |
2711 | typename ObjType::Compute_final_local_value_status status | |
2712 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
2713 | &symval, symtab); | |
2714 | if (status != ObjType::CFLV_OK | |
2715 | || !symval.has_output_value()) | |
a3e60ddb | 2716 | return true; |
ec661b9d | 2717 | to = symval.value(this->object_, 0); |
9055360d AM |
2718 | if (size == 64) |
2719 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 2720 | } |
cbcb23fa AM |
2721 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
2722 | to += this->addend_; | |
ec661b9d AM |
2723 | if (stub_table == NULL) |
2724 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 2725 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
2726 | { |
2727 | unsigned int dest_shndx; | |
1611bc4a AM |
2728 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
2729 | &to, &dest_shndx)) | |
2730 | return true; | |
ec661b9d AM |
2731 | } |
2732 | Address delta = to - from; | |
2733 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
2734 | { | |
0cfdc767 AM |
2735 | if (stub_table == NULL) |
2736 | { | |
2737 | gold_warning(_("%s:%s: branch in non-executable section," | |
2738 | " no long branch stub for you"), | |
2739 | this->object_->name().c_str(), | |
2740 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 2741 | return true; |
0cfdc767 | 2742 | } |
a3e60ddb AM |
2743 | return stub_table->add_long_branch_entry(this->object_, |
2744 | this->r_type_, from, to); | |
ec661b9d AM |
2745 | } |
2746 | } | |
a3e60ddb | 2747 | return true; |
ec661b9d AM |
2748 | } |
2749 | ||
2750 | // Relaxation hook. This is where we do stub generation. | |
2751 | ||
2752 | template<int size, bool big_endian> | |
2753 | bool | |
2754 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
2755 | const Input_objects*, | |
2756 | Symbol_table* symtab, | |
2757 | Layout* layout, | |
2758 | const Task* task) | |
2759 | { | |
2760 | unsigned int prev_brlt_size = 0; | |
2761 | if (pass == 1) | |
ec661b9d | 2762 | { |
b4f7960d AM |
2763 | bool thread_safe |
2764 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
2765 | if (size == 64 | |
2766 | && this->abiversion() < 2 | |
2767 | && !thread_safe | |
2768 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 2769 | { |
e2458743 | 2770 | static const char* const thread_starter[] = |
9e69ed50 AM |
2771 | { |
2772 | "pthread_create", | |
2773 | /* libstdc++ */ | |
2774 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
2775 | /* librt */ | |
2776 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
2777 | "mq_notify", "create_timer", | |
2778 | /* libanl */ | |
2779 | "getaddrinfo_a", | |
2780 | /* libgomp */ | |
80272b8c | 2781 | "GOMP_parallel", |
9e69ed50 | 2782 | "GOMP_parallel_start", |
80272b8c | 2783 | "GOMP_parallel_loop_static", |
9e69ed50 | 2784 | "GOMP_parallel_loop_static_start", |
80272b8c | 2785 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 2786 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 2787 | "GOMP_parallel_loop_guided", |
9e69ed50 | 2788 | "GOMP_parallel_loop_guided_start", |
80272b8c | 2789 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 2790 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 2791 | "GOMP_parallel_sections", |
43819297 | 2792 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
2793 | /* libgo */ |
2794 | "__go_go", | |
9e69ed50 AM |
2795 | }; |
2796 | ||
e2458743 AM |
2797 | if (parameters->options().shared()) |
2798 | thread_safe = true; | |
2799 | else | |
9e69ed50 | 2800 | { |
e2458743 AM |
2801 | for (unsigned int i = 0; |
2802 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
2803 | i++) | |
2804 | { | |
2805 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
2806 | thread_safe = (sym != NULL | |
2807 | && sym->in_reg() | |
2808 | && sym->in_real_elf()); | |
2809 | if (thread_safe) | |
2810 | break; | |
2811 | } | |
9e69ed50 | 2812 | } |
ec661b9d | 2813 | } |
9e69ed50 | 2814 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
2815 | } |
2816 | ||
2817 | if (pass == 1) | |
2818 | { | |
2819 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
2820 | bool no_size_errors = true; | |
2821 | if (this->stub_group_size_ == 1) | |
2822 | this->stub_group_size_ = 0x1c00000; | |
2823 | else if (this->stub_group_size_ == -1) | |
2824 | this->stub_group_size_ = -0x1e00000; | |
2825 | else | |
2826 | no_size_errors = false; | |
2827 | this->group_sections(layout, task, no_size_errors); | |
2828 | } | |
2829 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
2830 | { | |
2831 | this->branch_lookup_table_.clear(); | |
2832 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2833 | p != this->stub_tables_.end(); | |
2834 | ++p) | |
2835 | { | |
2836 | (*p)->clear_stubs(true); | |
2837 | } | |
2838 | this->stub_tables_.clear(); | |
2839 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
2840 | gold_info(_("%s: stub group size is too large; retrying with %d"), | |
2841 | program_name, this->stub_group_size_); | |
2842 | this->group_sections(layout, task, true); | |
ec661b9d AM |
2843 | } |
2844 | ||
2845 | // We need address of stub tables valid for make_stub. | |
2846 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2847 | p != this->stub_tables_.end(); | |
2848 | ++p) | |
2849 | { | |
2850 | const Powerpc_relobj<size, big_endian>* object | |
2851 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
2852 | Address off = object->get_output_section_offset((*p)->shndx()); | |
2853 | gold_assert(off != invalid_address); | |
2854 | Output_section* os = (*p)->output_section(); | |
2855 | (*p)->set_address_and_size(os, off); | |
2856 | } | |
2857 | ||
9e69ed50 AM |
2858 | if (pass != 1) |
2859 | { | |
2860 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
2861 | prev_brlt_size = this->branch_lookup_table_.size(); | |
2862 | this->branch_lookup_table_.clear(); | |
2863 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2864 | p != this->stub_tables_.end(); | |
2865 | ++p) | |
2866 | { | |
a3e60ddb | 2867 | (*p)->clear_stubs(false); |
9e69ed50 AM |
2868 | } |
2869 | } | |
2870 | ||
2871 | // Build all the stubs. | |
a3e60ddb | 2872 | this->relax_failed_ = false; |
ec661b9d AM |
2873 | Stub_table<size, big_endian>* ifunc_stub_table |
2874 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
2875 | Stub_table<size, big_endian>* one_stub_table | |
2876 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
2877 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
2878 | b != this->branch_info_.end(); | |
2879 | b++) | |
2880 | { | |
a3e60ddb AM |
2881 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
2882 | && !this->relax_failed_) | |
2883 | { | |
2884 | this->relax_failed_ = true; | |
2885 | this->relax_fail_count_++; | |
2886 | if (this->relax_fail_count_ < 3) | |
2887 | return true; | |
2888 | } | |
ec661b9d AM |
2889 | } |
2890 | ||
9e69ed50 | 2891 | // Did anything change size? |
ec661b9d AM |
2892 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
2893 | bool again = num_huge_branches != prev_brlt_size; | |
2894 | if (size == 64 && num_huge_branches != 0) | |
2895 | this->make_brlt_section(layout); | |
2896 | if (size == 64 && again) | |
2897 | this->brlt_section_->set_current_size(num_huge_branches); | |
2898 | ||
2899 | typedef Unordered_set<Output_section*> Output_sections; | |
2900 | Output_sections os_need_update; | |
2901 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2902 | p != this->stub_tables_.end(); | |
2903 | ++p) | |
2904 | { | |
2905 | if ((*p)->size_update()) | |
2906 | { | |
2907 | again = true; | |
9d5781f8 | 2908 | (*p)->add_eh_frame(layout); |
ec661b9d AM |
2909 | os_need_update.insert((*p)->output_section()); |
2910 | } | |
2911 | } | |
2912 | ||
9e69ed50 AM |
2913 | // Set output section offsets for all input sections in an output |
2914 | // section that just changed size. Anything past the stubs will | |
2915 | // need updating. | |
ec661b9d AM |
2916 | for (typename Output_sections::iterator p = os_need_update.begin(); |
2917 | p != os_need_update.end(); | |
2918 | p++) | |
2919 | { | |
2920 | Output_section* os = *p; | |
2921 | Address off = 0; | |
2922 | typedef Output_section::Input_section_list Input_section_list; | |
2923 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
2924 | i != os->input_sections().end(); | |
2925 | ++i) | |
2926 | { | |
2927 | off = align_address(off, i->addralign()); | |
2928 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
2929 | i->relobj()->set_section_offset(i->shndx(), off); | |
2930 | if (i->is_relaxed_input_section()) | |
2931 | { | |
2932 | Stub_table<size, big_endian>* stub_table | |
2933 | = static_cast<Stub_table<size, big_endian>*>( | |
2934 | i->relaxed_input_section()); | |
2935 | off += stub_table->set_address_and_size(os, off); | |
2936 | } | |
2937 | else | |
2938 | off += i->data_size(); | |
2939 | } | |
6830ee24 AM |
2940 | // If .branch_lt is part of this output section, then we have |
2941 | // just done the offset adjustment. | |
ec661b9d AM |
2942 | os->clear_section_offsets_need_adjustment(); |
2943 | } | |
2944 | ||
2945 | if (size == 64 | |
2946 | && !again | |
2947 | && num_huge_branches != 0 | |
2948 | && parameters->options().output_is_position_independent()) | |
2949 | { | |
2950 | // Fill in the BRLT relocs. | |
06f30c9d | 2951 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
2952 | for (typename Branch_lookup_table::const_iterator p |
2953 | = this->branch_lookup_table_.begin(); | |
2954 | p != this->branch_lookup_table_.end(); | |
2955 | ++p) | |
2956 | { | |
2957 | this->brlt_section_->add_reloc(p->first, p->second); | |
2958 | } | |
06f30c9d | 2959 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d AM |
2960 | } |
2961 | return again; | |
2962 | } | |
2963 | ||
9d5781f8 AM |
2964 | template<int size, bool big_endian> |
2965 | void | |
2966 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
2967 | unsigned char* oview, | |
2968 | uint64_t* paddress, | |
2969 | off_t* plen) const | |
2970 | { | |
2971 | uint64_t address = plt->address(); | |
2972 | off_t len = plt->data_size(); | |
2973 | ||
2974 | if (plt == this->glink_) | |
2975 | { | |
2976 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
2977 | if (len == 0) |
2978 | { | |
2979 | gold_assert(parameters->doing_static_link()); | |
2980 | // Static linking may need stubs, to support ifunc and long | |
2981 | // branches. We need to create an output section for | |
2982 | // .eh_frame early in the link process, to have a place to | |
2983 | // attach stub .eh_frame info. We also need to have | |
2984 | // registered a CIE that matches the stub CIE. Both of | |
2985 | // these requirements are satisfied by creating an FDE and | |
2986 | // CIE for .glink, even though static linking will leave | |
2987 | // .glink zero length. | |
2988 | // ??? Hopefully generating an FDE with a zero address range | |
2989 | // won't confuse anything that consumes .eh_frame info. | |
2990 | } | |
2991 | else if (size == 64) | |
9d5781f8 AM |
2992 | { |
2993 | // There is one word before __glink_PLTresolve | |
2994 | address += 8; | |
2995 | len -= 8; | |
2996 | } | |
2997 | else if (parameters->options().output_is_position_independent()) | |
2998 | { | |
2999 | // There are two FDEs for a position independent glink. | |
3000 | // The first covers the branch table, the second | |
3001 | // __glink_PLTresolve at the end of glink. | |
3002 | off_t resolve_size = this->glink_->pltresolve_size; | |
5fe7ffdc | 3003 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3004 | len -= resolve_size; |
3005 | else | |
3006 | { | |
3007 | address += len - resolve_size; | |
3008 | len = resolve_size; | |
3009 | } | |
3010 | } | |
3011 | } | |
3012 | else | |
3013 | { | |
3014 | // Must be a stub table. | |
3015 | const Stub_table<size, big_endian>* stub_table | |
3016 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3017 | uint64_t stub_address = stub_table->stub_address(); | |
3018 | len -= stub_address - address; | |
3019 | address = stub_address; | |
3020 | } | |
3021 | ||
3022 | *paddress = address; | |
3023 | *plen = len; | |
3024 | } | |
3025 | ||
42cacb20 DE |
3026 | // A class to handle the PLT data. |
3027 | ||
3028 | template<int size, bool big_endian> | |
cf43a2fe | 3029 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3030 | { |
3031 | public: | |
3032 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3033 | size, big_endian> Reloc_section; | |
3034 | ||
e5d5f5ed AM |
3035 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3036 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3037 | const char* name) |
3038 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3039 | rel_(plt_rel), | |
3040 | targ_(targ), | |
e5d5f5ed AM |
3041 | name_(name) |
3042 | { } | |
42cacb20 DE |
3043 | |
3044 | // Add an entry to the PLT. | |
03e25981 | 3045 | void |
cf43a2fe | 3046 | add_entry(Symbol*); |
42cacb20 | 3047 | |
03e25981 | 3048 | void |
e5d5f5ed AM |
3049 | add_ifunc_entry(Symbol*); |
3050 | ||
03e25981 | 3051 | void |
e5d5f5ed AM |
3052 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3053 | ||
42cacb20 | 3054 | // Return the .rela.plt section data. |
e5d5f5ed | 3055 | Reloc_section* |
cf43a2fe AM |
3056 | rel_plt() const |
3057 | { | |
42cacb20 DE |
3058 | return this->rel_; |
3059 | } | |
3060 | ||
0e70b911 CC |
3061 | // Return the number of PLT entries. |
3062 | unsigned int | |
3063 | entry_count() const | |
d83ce4e3 | 3064 | { |
b3ccdeb5 AM |
3065 | if (this->current_data_size() == 0) |
3066 | return 0; | |
b4f7960d AM |
3067 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3068 | / this->plt_entry_size()); | |
d83ce4e3 | 3069 | } |
0e70b911 | 3070 | |
42cacb20 | 3071 | protected: |
42cacb20 | 3072 | void |
cf43a2fe | 3073 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3074 | { |
cf43a2fe | 3075 | os->set_entsize(0); |
42cacb20 DE |
3076 | } |
3077 | ||
6ce78956 AM |
3078 | // Write to a map file. |
3079 | void | |
3080 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3081 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3082 | |
cf43a2fe | 3083 | private: |
b4f7960d AM |
3084 | // Return the offset of the first non-reserved PLT entry. |
3085 | unsigned int | |
3086 | first_plt_entry_offset() const | |
3087 | { | |
3088 | // IPLT has no reserved entry. | |
3089 | if (this->name_[3] == 'I') | |
3090 | return 0; | |
3091 | return this->targ_->first_plt_entry_offset(); | |
3092 | } | |
3093 | ||
3094 | // Return the size of each PLT entry. | |
3095 | unsigned int | |
3096 | plt_entry_size() const | |
3097 | { | |
3098 | return this->targ_->plt_entry_size(); | |
3099 | } | |
cf43a2fe | 3100 | |
42cacb20 DE |
3101 | // Write out the PLT data. |
3102 | void | |
3103 | do_write(Output_file*); | |
3104 | ||
3105 | // The reloc section. | |
3106 | Reloc_section* rel_; | |
cf43a2fe AM |
3107 | // Allows access to .glink for do_write. |
3108 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3109 | // What to report in map file. |
3110 | const char *name_; | |
42cacb20 DE |
3111 | }; |
3112 | ||
e5d5f5ed | 3113 | // Add an entry to the PLT. |
42cacb20 DE |
3114 | |
3115 | template<int size, bool big_endian> | |
03e25981 | 3116 | void |
e5d5f5ed | 3117 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3118 | { |
e5d5f5ed AM |
3119 | if (!gsym->has_plt_offset()) |
3120 | { | |
ec661b9d | 3121 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3122 | if (off == 0) |
3123 | off += this->first_plt_entry_offset(); | |
3124 | gsym->set_plt_offset(off); | |
3125 | gsym->set_needs_dynsym_entry(); | |
3126 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3127 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3128 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3129 | this->set_current_data_size(off); |
3130 | } | |
42cacb20 DE |
3131 | } |
3132 | ||
e5d5f5ed | 3133 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3134 | |
3135 | template<int size, bool big_endian> | |
03e25981 | 3136 | void |
e5d5f5ed | 3137 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3138 | { |
cf43a2fe AM |
3139 | if (!gsym->has_plt_offset()) |
3140 | { | |
ec661b9d | 3141 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3142 | gsym->set_plt_offset(off); |
e5d5f5ed | 3143 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3144 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3145 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3146 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3147 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3148 | this->set_current_data_size(off); |
3149 | } | |
3150 | } | |
3151 | ||
3152 | // Add an entry for a local ifunc symbol to the IPLT. | |
3153 | ||
3154 | template<int size, bool big_endian> | |
03e25981 | 3155 | void |
e5d5f5ed AM |
3156 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3157 | Sized_relobj_file<size, big_endian>* relobj, | |
3158 | unsigned int local_sym_index) | |
3159 | { | |
3160 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3161 | { | |
ec661b9d | 3162 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3163 | relobj->set_local_plt_offset(local_sym_index, off); |
3164 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3165 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3166 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3167 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3168 | this, off, 0); | |
b4f7960d | 3169 | off += this->plt_entry_size(); |
cf43a2fe AM |
3170 | this->set_current_data_size(off); |
3171 | } | |
42cacb20 DE |
3172 | } |
3173 | ||
dd93cd0a | 3174 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3175 | static const uint32_t add_2_2_11 = 0x7c425a14; |
dd93cd0a AM |
3176 | static const uint32_t add_3_3_2 = 0x7c631214; |
3177 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
3178 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
b4f7960d AM |
3179 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3180 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3181 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3182 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3183 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3184 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3185 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3186 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3187 | static const uint32_t addis_0_2 = 0x3c020000; |
3188 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3189 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3190 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3191 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3192 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3193 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3194 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3195 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3196 | static const uint32_t b = 0x48000000; |
3197 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3198 | static const uint32_t bctr = 0x4e800420; | |
f3a0ed29 | 3199 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3200 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3201 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3202 | static const uint32_t cmpldi_2_0 = 0x28220000; |
dd93cd0a AM |
3203 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3204 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
3205 | static const uint32_t ld_0_1 = 0xe8010000; |
3206 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3207 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3208 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d AM |
3209 | static const uint32_t ld_2_11 = 0xe84b0000; |
3210 | static const uint32_t ld_11_2 = 0xe9620000; | |
3211 | static const uint32_t ld_11_11 = 0xe96b0000; | |
3212 | static const uint32_t ld_12_2 = 0xe9820000; | |
3213 | static const uint32_t ld_12_11 = 0xe98b0000; | |
9055360d | 3214 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3215 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3216 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3217 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3218 | static const uint32_t lis_0 = 0x3c000000; |
c9269dff AM |
3219 | static const uint32_t lis_11 = 0x3d600000; |
3220 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3221 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff AM |
3222 | static const uint32_t lwz_0_12 = 0x800c0000; |
3223 | static const uint32_t lwz_11_11 = 0x816b0000; | |
3224 | static const uint32_t lwz_11_30 = 0x817e0000; | |
3225 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 3226 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3227 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3228 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
3229 | static const uint32_t mflr_12 = 0x7d8802a6; |
3230 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
3231 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3232 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3233 | static const uint32_t mtlr_0 = 0x7c0803a6; |
c9269dff | 3234 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3235 | static const uint32_t nop = 0x60000000; |
c9269dff | 3236 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3237 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3238 | static const uint32_t std_0_1 = 0xf8010000; |
3239 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3240 | static const uint32_t std_2_1 = 0xf8410000; |
f3a0ed29 AM |
3241 | static const uint32_t stfd_0_1 = 0xd8010000; |
3242 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3243 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3244 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3245 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3246 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3247 | |
3248 | // Write out the PLT. | |
3249 | ||
3250 | template<int size, bool big_endian> | |
3251 | void | |
3252 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3253 | { | |
b3ccdeb5 | 3254 | if (size == 32 && this->name_[3] != 'I') |
cf43a2fe | 3255 | { |
ec661b9d | 3256 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3257 | const section_size_type oview_size |
3258 | = convert_to_section_size_type(this->data_size()); | |
3259 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3260 | unsigned char* pov = oview; | |
3261 | unsigned char* endpov = oview + oview_size; | |
3262 | ||
e5d5f5ed | 3263 | // The address of the .glink branch table |
cf43a2fe AM |
3264 | const Output_data_glink<size, big_endian>* glink |
3265 | = this->targ_->glink_section(); | |
ec661b9d | 3266 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3267 | |
3268 | while (pov < endpov) | |
3269 | { | |
3270 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3271 | pov += 4; | |
3272 | branch_tab += 4; | |
3273 | } | |
3274 | ||
3275 | of->write_output_view(offset, oview_size, oview); | |
3276 | } | |
3277 | } | |
3278 | ||
3279 | // Create the PLT section. | |
3280 | ||
3281 | template<int size, bool big_endian> | |
3282 | void | |
40b469d7 AM |
3283 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
3284 | Layout* layout) | |
cf43a2fe AM |
3285 | { |
3286 | if (this->plt_ == NULL) | |
3287 | { | |
40b469d7 AM |
3288 | if (this->got_ == NULL) |
3289 | this->got_section(symtab, layout); | |
3290 | ||
cf43a2fe AM |
3291 | if (this->glink_ == NULL) |
3292 | make_glink_section(layout); | |
3293 | ||
3294 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
3295 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 3296 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
3297 | this->rela_dyn_section(layout); |
3298 | ||
e5d5f5ed AM |
3299 | Reloc_section* plt_rel = new Reloc_section(false); |
3300 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
3301 | elfcpp::SHF_ALLOC, plt_rel, | |
3302 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
3303 | this->plt_ | |
3304 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 3305 | "** PLT"); |
cf43a2fe AM |
3306 | layout->add_output_section_data(".plt", |
3307 | (size == 32 | |
3308 | ? elfcpp::SHT_PROGBITS | |
3309 | : elfcpp::SHT_NOBITS), | |
3310 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3311 | this->plt_, | |
3312 | (size == 32 | |
3313 | ? ORDER_SMALL_DATA | |
3314 | : ORDER_SMALL_BSS), | |
3315 | false); | |
3316 | } | |
3317 | } | |
3318 | ||
e5d5f5ed AM |
3319 | // Create the IPLT section. |
3320 | ||
3321 | template<int size, bool big_endian> | |
3322 | void | |
40b469d7 AM |
3323 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
3324 | Layout* layout) | |
e5d5f5ed AM |
3325 | { |
3326 | if (this->iplt_ == NULL) | |
3327 | { | |
40b469d7 | 3328 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
3329 | |
3330 | Reloc_section* iplt_rel = new Reloc_section(false); | |
3331 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
3332 | this->iplt_ | |
3333 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 3334 | "** IPLT"); |
e5d5f5ed | 3335 | this->plt_->output_section()->add_output_section_data(this->iplt_); |
e5d5f5ed AM |
3336 | } |
3337 | } | |
3338 | ||
ec661b9d | 3339 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
3340 | |
3341 | template<int size, bool big_endian> | |
ec661b9d | 3342 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
3343 | { |
3344 | public: | |
ec661b9d AM |
3345 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
3346 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3347 | size, big_endian> Reloc_section; | |
c9269dff | 3348 | |
ec661b9d AM |
3349 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
3350 | Reloc_section* brlt_rel) | |
3351 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3352 | rel_(brlt_rel), | |
3353 | targ_(targ) | |
3354 | { } | |
cf43a2fe | 3355 | |
06f30c9d CC |
3356 | void |
3357 | reset_brlt_sizes() | |
3358 | { | |
3359 | this->reset_data_size(); | |
3360 | this->rel_->reset_data_size(); | |
3361 | } | |
3362 | ||
3363 | void | |
3364 | finalize_brlt_sizes() | |
3365 | { | |
3366 | this->finalize_data_size(); | |
3367 | this->rel_->finalize_data_size(); | |
3368 | } | |
3369 | ||
ec661b9d | 3370 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 3371 | void |
ec661b9d AM |
3372 | add_reloc(Address to, unsigned int off) |
3373 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 3374 | |
ec661b9d | 3375 | // Update section and reloc section size. |
e5d5f5ed | 3376 | void |
ec661b9d AM |
3377 | set_current_size(unsigned int num_branches) |
3378 | { | |
3379 | this->reset_address_and_file_offset(); | |
3380 | this->set_current_data_size(num_branches * 16); | |
3381 | this->finalize_data_size(); | |
3382 | Output_section* os = this->output_section(); | |
3383 | os->set_section_offsets_need_adjustment(); | |
3384 | if (this->rel_ != NULL) | |
3385 | { | |
3386 | unsigned int reloc_size | |
3387 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
3388 | this->rel_->reset_address_and_file_offset(); | |
3389 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
3390 | this->rel_->finalize_data_size(); | |
3391 | Output_section* os = this->rel_->output_section(); | |
3392 | os->set_section_offsets_need_adjustment(); | |
3393 | } | |
3394 | } | |
cf43a2fe | 3395 | |
ec661b9d AM |
3396 | protected: |
3397 | void | |
3398 | do_adjust_output_section(Output_section* os) | |
3399 | { | |
3400 | os->set_entsize(0); | |
3401 | } | |
e5d5f5ed | 3402 | |
ec661b9d AM |
3403 | // Write to a map file. |
3404 | void | |
3405 | do_print_to_mapfile(Mapfile* mapfile) const | |
3406 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 3407 | |
ec661b9d AM |
3408 | private: |
3409 | // Write out the BRLT data. | |
3410 | void | |
3411 | do_write(Output_file*); | |
c9824451 | 3412 | |
ec661b9d AM |
3413 | // The reloc section. |
3414 | Reloc_section* rel_; | |
3415 | Target_powerpc<size, big_endian>* targ_; | |
3416 | }; | |
cf43a2fe | 3417 | |
ec661b9d AM |
3418 | // Make the branch lookup table section. |
3419 | ||
3420 | template<int size, bool big_endian> | |
3421 | void | |
3422 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
3423 | { | |
3424 | if (size == 64 && this->brlt_section_ == NULL) | |
3425 | { | |
3426 | Reloc_section* brlt_rel = NULL; | |
3427 | bool is_pic = parameters->options().output_is_position_independent(); | |
3428 | if (is_pic) | |
3429 | { | |
6830ee24 AM |
3430 | // When PIC we can't fill in .branch_lt (like .plt it can be |
3431 | // a bss style section) but must initialise at runtime via | |
ec661b9d AM |
3432 | // dynamic relocats. |
3433 | this->rela_dyn_section(layout); | |
3434 | brlt_rel = new Reloc_section(false); | |
3435 | this->rela_dyn_->output_section()->add_output_section_data(brlt_rel); | |
3436 | } | |
3437 | this->brlt_section_ | |
3438 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
3439 | if (this->plt_ && is_pic) | |
3440 | this->plt_->output_section() | |
3441 | ->add_output_section_data(this->brlt_section_); | |
3442 | else | |
6830ee24 | 3443 | layout->add_output_section_data(".branch_lt", |
ec661b9d AM |
3444 | (is_pic ? elfcpp::SHT_NOBITS |
3445 | : elfcpp::SHT_PROGBITS), | |
3446 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3447 | this->brlt_section_, | |
3448 | (is_pic ? ORDER_SMALL_BSS | |
3449 | : ORDER_SMALL_DATA), | |
3450 | false); | |
3451 | } | |
3452 | } | |
3453 | ||
6830ee24 | 3454 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
3455 | |
3456 | template<int size, bool big_endian> | |
3457 | void | |
3458 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3459 | { | |
3460 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
3461 | { | |
3462 | const section_size_type offset = this->offset(); | |
3463 | const section_size_type oview_size | |
3464 | = convert_to_section_size_type(this->data_size()); | |
3465 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3466 | ||
3467 | this->targ_->write_branch_lookup_table(oview); | |
3468 | of->write_output_view(offset, oview_size, oview); | |
3469 | } | |
3470 | } | |
3471 | ||
9e69ed50 AM |
3472 | static inline uint32_t |
3473 | l(uint32_t a) | |
3474 | { | |
3475 | return a & 0xffff; | |
3476 | } | |
3477 | ||
3478 | static inline uint32_t | |
3479 | hi(uint32_t a) | |
3480 | { | |
3481 | return l(a >> 16); | |
3482 | } | |
3483 | ||
3484 | static inline uint32_t | |
3485 | ha(uint32_t a) | |
3486 | { | |
3487 | return hi(a + 0x8000); | |
3488 | } | |
3489 | ||
9d5781f8 AM |
3490 | template<int size> |
3491 | struct Eh_cie | |
3492 | { | |
3493 | static const unsigned char eh_frame_cie[12]; | |
3494 | }; | |
3495 | ||
3496 | template<int size> | |
3497 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
3498 | { | |
3499 | 1, // CIE version. | |
3500 | 'z', 'R', 0, // Augmentation string. | |
3501 | 4, // Code alignment. | |
3502 | 0x80 - size / 8 , // Data alignment. | |
3503 | 65, // RA reg. | |
3504 | 1, // Augmentation size. | |
3505 | (elfcpp::DW_EH_PE_pcrel | |
3506 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
3507 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
3508 | }; | |
3509 | ||
b4f7960d AM |
3510 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
3511 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
3512 | { |
3513 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3514 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3515 | 0, // Augmentation size. | |
3516 | elfcpp::DW_CFA_advance_loc + 1, | |
3517 | elfcpp::DW_CFA_register, 65, 12, | |
3518 | elfcpp::DW_CFA_advance_loc + 4, | |
3519 | elfcpp::DW_CFA_restore_extended, 65 | |
3520 | }; | |
3521 | ||
b4f7960d AM |
3522 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
3523 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
3524 | { | |
3525 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3526 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3527 | 0, // Augmentation size. | |
3528 | elfcpp::DW_CFA_advance_loc + 1, | |
3529 | elfcpp::DW_CFA_register, 65, 0, | |
3530 | elfcpp::DW_CFA_advance_loc + 4, | |
3531 | elfcpp::DW_CFA_restore_extended, 65 | |
3532 | }; | |
3533 | ||
9d5781f8 AM |
3534 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
3535 | static const unsigned char glink_eh_frame_fde_32[] = | |
3536 | { | |
3537 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3538 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3539 | 0, // Augmentation size. | |
3540 | elfcpp::DW_CFA_advance_loc + 2, | |
3541 | elfcpp::DW_CFA_register, 65, 0, | |
3542 | elfcpp::DW_CFA_advance_loc + 4, | |
3543 | elfcpp::DW_CFA_restore_extended, 65 | |
3544 | }; | |
3545 | ||
3546 | static const unsigned char default_fde[] = | |
3547 | { | |
3548 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
3549 | 0, 0, 0, 0, // Replaced with size of stubs. | |
3550 | 0, // Augmentation size. | |
3551 | elfcpp::DW_CFA_nop, // Pad. | |
3552 | elfcpp::DW_CFA_nop, | |
3553 | elfcpp::DW_CFA_nop | |
3554 | }; | |
3555 | ||
9e69ed50 AM |
3556 | template<bool big_endian> |
3557 | static inline void | |
3558 | write_insn(unsigned char* p, uint32_t v) | |
3559 | { | |
3560 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
3561 | } | |
3562 | ||
ec661b9d AM |
3563 | // Stub_table holds information about plt and long branch stubs. |
3564 | // Stubs are built in an area following some input section determined | |
3565 | // by group_sections(). This input section is converted to a relaxed | |
3566 | // input section allowing it to be resized to accommodate the stubs | |
3567 | ||
3568 | template<int size, bool big_endian> | |
3569 | class Stub_table : public Output_relaxed_input_section | |
3570 | { | |
3571 | public: | |
3572 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
3573 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
3574 | ||
a3e60ddb AM |
3575 | Stub_table(Target_powerpc<size, big_endian>* targ, |
3576 | Output_section* output_section, | |
3577 | const Output_section::Input_section* owner) | |
3578 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), | |
3579 | owner->relobj() | |
3580 | ->section_addralign(owner->shndx())), | |
ec661b9d | 3581 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
3582 | orig_data_size_(owner->current_data_size()), |
3583 | plt_size_(0), last_plt_size_(0), | |
9d5781f8 | 3584 | branch_size_(0), last_branch_size_(0), eh_frame_added_(false) |
a3e60ddb AM |
3585 | { |
3586 | this->set_output_section(output_section); | |
ec661b9d | 3587 | |
a3e60ddb AM |
3588 | std::vector<Output_relaxed_input_section*> new_relaxed; |
3589 | new_relaxed.push_back(this); | |
3590 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
3591 | } | |
ec661b9d AM |
3592 | |
3593 | // Add a plt call stub. | |
a3e60ddb AM |
3594 | bool |
3595 | add_plt_call_entry(Address, | |
3596 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3597 | const Symbol*, |
3598 | unsigned int, | |
3599 | Address); | |
3600 | ||
a3e60ddb AM |
3601 | bool |
3602 | add_plt_call_entry(Address, | |
3603 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3604 | unsigned int, |
3605 | unsigned int, | |
3606 | Address); | |
3607 | ||
3608 | // Find a given plt call stub. | |
3609 | Address | |
3610 | find_plt_call_entry(const Symbol*) const; | |
3611 | ||
3612 | Address | |
3613 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3614 | unsigned int) const; | |
3615 | ||
3616 | Address | |
3617 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3618 | const Symbol*, | |
3619 | unsigned int, | |
3620 | Address) const; | |
3621 | ||
3622 | Address | |
3623 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3624 | unsigned int, | |
3625 | unsigned int, | |
3626 | Address) const; | |
3627 | ||
3628 | // Add a long branch stub. | |
a3e60ddb AM |
3629 | bool |
3630 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
3631 | unsigned int, Address, Address); | |
ec661b9d AM |
3632 | |
3633 | Address | |
9d5781f8 AM |
3634 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
3635 | Address) const; | |
ec661b9d | 3636 | |
a3e60ddb AM |
3637 | bool |
3638 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
3639 | { | |
cbcb23fa | 3640 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
3641 | if (max_branch_offset == 0) |
3642 | return true; | |
3643 | gold_assert(from != invalid_address); | |
3644 | Address loc = off + this->stub_address(); | |
3645 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
3646 | } | |
3647 | ||
ec661b9d | 3648 | void |
a3e60ddb | 3649 | clear_stubs(bool all) |
cf43a2fe | 3650 | { |
9e69ed50 AM |
3651 | this->plt_call_stubs_.clear(); |
3652 | this->plt_size_ = 0; | |
ec661b9d AM |
3653 | this->long_branch_stubs_.clear(); |
3654 | this->branch_size_ = 0; | |
a3e60ddb AM |
3655 | if (all) |
3656 | { | |
3657 | this->last_plt_size_ = 0; | |
3658 | this->last_branch_size_ = 0; | |
3659 | } | |
cf43a2fe AM |
3660 | } |
3661 | ||
ec661b9d AM |
3662 | Address |
3663 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 3664 | { |
ec661b9d AM |
3665 | Address start_off = off; |
3666 | off += this->orig_data_size_; | |
3667 | Address my_size = this->plt_size_ + this->branch_size_; | |
3668 | if (my_size != 0) | |
3669 | off = align_address(off, this->stub_align()); | |
3670 | // Include original section size and alignment padding in size | |
3671 | my_size += off - start_off; | |
3672 | this->reset_address_and_file_offset(); | |
3673 | this->set_current_data_size(my_size); | |
3674 | this->set_address_and_file_offset(os->address() + start_off, | |
3675 | os->offset() + start_off); | |
3676 | return my_size; | |
cf43a2fe AM |
3677 | } |
3678 | ||
ec661b9d | 3679 | Address |
9d5781f8 | 3680 | stub_address() const |
ec661b9d AM |
3681 | { |
3682 | return align_address(this->address() + this->orig_data_size_, | |
3683 | this->stub_align()); | |
3684 | } | |
3685 | ||
3686 | Address | |
9d5781f8 | 3687 | stub_offset() const |
ec661b9d AM |
3688 | { |
3689 | return align_address(this->offset() + this->orig_data_size_, | |
3690 | this->stub_align()); | |
3691 | } | |
3692 | ||
3693 | section_size_type | |
3694 | plt_size() const | |
3695 | { return this->plt_size_; } | |
3696 | ||
3697 | bool | |
3698 | size_update() | |
3699 | { | |
3700 | Output_section* os = this->output_section(); | |
3701 | if (os->addralign() < this->stub_align()) | |
3702 | { | |
3703 | os->set_addralign(this->stub_align()); | |
3704 | // FIXME: get rid of the insane checkpointing. | |
3705 | // We can't increase alignment of the input section to which | |
3706 | // stubs are attached; The input section may be .init which | |
3707 | // is pasted together with other .init sections to form a | |
3708 | // function. Aligning might insert zero padding resulting in | |
3709 | // sigill. However we do need to increase alignment of the | |
3710 | // output section so that the align_address() on offset in | |
3711 | // set_address_and_size() adds the same padding as the | |
3712 | // align_address() on address in stub_address(). | |
3713 | // What's more, we need this alignment for the layout done in | |
3714 | // relaxation_loop_body() so that the output section starts at | |
3715 | // a suitably aligned address. | |
3716 | os->checkpoint_set_addralign(this->stub_align()); | |
3717 | } | |
9e69ed50 AM |
3718 | if (this->last_plt_size_ != this->plt_size_ |
3719 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 3720 | { |
9e69ed50 AM |
3721 | this->last_plt_size_ = this->plt_size_; |
3722 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
3723 | return true; |
3724 | } | |
3725 | return false; | |
3726 | } | |
3727 | ||
9d5781f8 AM |
3728 | // Add .eh_frame info for this stub section. Unlike other linker |
3729 | // generated .eh_frame this is added late in the link, because we | |
3730 | // only want the .eh_frame info if this particular stub section is | |
3731 | // non-empty. | |
3732 | void | |
3733 | add_eh_frame(Layout* layout) | |
3734 | { | |
3735 | if (!this->eh_frame_added_) | |
3736 | { | |
3737 | if (!parameters->options().ld_generated_unwind_info()) | |
3738 | return; | |
3739 | ||
3740 | // Since we add stub .eh_frame info late, it must be placed | |
3741 | // after all other linker generated .eh_frame info so that | |
3742 | // merge mapping need not be updated for input sections. | |
3743 | // There is no provision to use a different CIE to that used | |
3744 | // by .glink. | |
3745 | if (!this->targ_->has_glink()) | |
3746 | return; | |
3747 | ||
3748 | layout->add_eh_frame_for_plt(this, | |
3749 | Eh_cie<size>::eh_frame_cie, | |
3750 | sizeof (Eh_cie<size>::eh_frame_cie), | |
3751 | default_fde, | |
3752 | sizeof (default_fde)); | |
3753 | this->eh_frame_added_ = true; | |
3754 | } | |
3755 | } | |
3756 | ||
ec661b9d AM |
3757 | Target_powerpc<size, big_endian>* |
3758 | targ() const | |
3759 | { return targ_; } | |
6ce78956 | 3760 | |
cf43a2fe | 3761 | private: |
9e69ed50 AM |
3762 | class Plt_stub_ent; |
3763 | class Plt_stub_ent_hash; | |
3764 | typedef Unordered_map<Plt_stub_ent, unsigned int, | |
3765 | Plt_stub_ent_hash> Plt_stub_entries; | |
3766 | ||
3767 | // Alignment of stub section. | |
ec661b9d | 3768 | unsigned int |
9e69ed50 AM |
3769 | stub_align() const |
3770 | { | |
3771 | if (size == 32) | |
3772 | return 16; | |
3773 | unsigned int min_align = 32; | |
3774 | unsigned int user_align = 1 << parameters->options().plt_align(); | |
3775 | return std::max(user_align, min_align); | |
3776 | } | |
cf43a2fe | 3777 | |
91c2b899 AM |
3778 | // Return the plt offset for the given call stub. |
3779 | Address | |
3780 | plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const | |
3781 | { | |
3782 | const Symbol* gsym = p->first.sym_; | |
3783 | if (gsym != NULL) | |
3784 | { | |
3785 | *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
3786 | && gsym->can_use_relative_reloc(false)); | |
3787 | return gsym->plt_offset(); | |
3788 | } | |
3789 | else | |
3790 | { | |
3791 | *is_iplt = true; | |
3792 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; | |
3793 | unsigned int local_sym_index = p->first.locsym_; | |
3794 | return relobj->local_plt_offset(local_sym_index); | |
3795 | } | |
3796 | } | |
3797 | ||
9e69ed50 | 3798 | // Size of a given plt call stub. |
ec661b9d | 3799 | unsigned int |
9e69ed50 AM |
3800 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
3801 | { | |
3802 | if (size == 32) | |
3803 | return 16; | |
3804 | ||
91c2b899 AM |
3805 | bool is_iplt; |
3806 | Address plt_addr = this->plt_off(p, &is_iplt); | |
3807 | if (is_iplt) | |
3808 | plt_addr += this->targ_->iplt_section()->address(); | |
9e69ed50 | 3809 | else |
91c2b899 AM |
3810 | plt_addr += this->targ_->plt_section()->address(); |
3811 | Address got_addr = this->targ_->got_section()->output_section()->address(); | |
9e69ed50 AM |
3812 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
3813 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
3814 | got_addr += ppcobj->toc_base_offset(); |
3815 | Address off = plt_addr - got_addr; | |
b4f7960d AM |
3816 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
3817 | if (this->targ_->abiversion() < 2) | |
3818 | { | |
3819 | bool static_chain = parameters->options().plt_static_chain(); | |
3820 | bool thread_safe = this->targ_->plt_thread_safe(); | |
3821 | bytes += (4 | |
3822 | + 4 * static_chain | |
3823 | + 8 * thread_safe | |
3824 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
3825 | } | |
9e69ed50 AM |
3826 | unsigned int align = 1 << parameters->options().plt_align(); |
3827 | if (align > 1) | |
3828 | bytes = (bytes + align - 1) & -align; | |
3829 | return bytes; | |
3830 | } | |
ec661b9d AM |
3831 | |
3832 | // Return long branch stub size. | |
3833 | unsigned int | |
3834 | branch_stub_size(Address to) | |
3835 | { | |
9e69ed50 AM |
3836 | Address loc |
3837 | = this->stub_address() + this->last_plt_size_ + this->branch_size_; | |
3838 | if (to - loc + (1 << 25) < 2 << 25) | |
ec661b9d AM |
3839 | return 4; |
3840 | if (size == 64 || !parameters->options().output_is_position_independent()) | |
3841 | return 16; | |
3842 | return 32; | |
3843 | } | |
3844 | ||
3845 | // Write out stubs. | |
cf43a2fe AM |
3846 | void |
3847 | do_write(Output_file*); | |
3848 | ||
ec661b9d AM |
3849 | // Plt call stub keys. |
3850 | class Plt_stub_ent | |
cf43a2fe | 3851 | { |
d1a8cabd | 3852 | public: |
ec661b9d | 3853 | Plt_stub_ent(const Symbol* sym) |
c9824451 AM |
3854 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
3855 | { } | |
3856 | ||
ec661b9d AM |
3857 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3858 | unsigned int locsym_index) | |
c9824451 AM |
3859 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
3860 | { } | |
3861 | ||
ec661b9d AM |
3862 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3863 | const Symbol* sym, | |
3864 | unsigned int r_type, | |
3865 | Address addend) | |
e5d5f5ed | 3866 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
3867 | { |
3868 | if (size != 32) | |
ec661b9d | 3869 | this->addend_ = addend; |
d1a8cabd | 3870 | else if (parameters->options().output_is_position_independent() |
ec661b9d | 3871 | && r_type == elfcpp::R_PPC_PLTREL24) |
cf43a2fe | 3872 | { |
ec661b9d | 3873 | this->addend_ = addend; |
e5d5f5ed | 3874 | if (this->addend_ >= 32768) |
d1a8cabd | 3875 | this->object_ = object; |
cf43a2fe AM |
3876 | } |
3877 | } | |
3878 | ||
ec661b9d AM |
3879 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3880 | unsigned int locsym_index, | |
3881 | unsigned int r_type, | |
3882 | Address addend) | |
e5d5f5ed AM |
3883 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
3884 | { | |
3885 | if (size != 32) | |
ec661b9d | 3886 | this->addend_ = addend; |
e5d5f5ed | 3887 | else if (parameters->options().output_is_position_independent() |
ec661b9d AM |
3888 | && r_type == elfcpp::R_PPC_PLTREL24) |
3889 | this->addend_ = addend; | |
e5d5f5ed AM |
3890 | } |
3891 | ||
ec661b9d | 3892 | bool operator==(const Plt_stub_ent& that) const |
cf43a2fe AM |
3893 | { |
3894 | return (this->sym_ == that.sym_ | |
3895 | && this->object_ == that.object_ | |
e5d5f5ed AM |
3896 | && this->addend_ == that.addend_ |
3897 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 3898 | } |
c9269dff AM |
3899 | |
3900 | const Symbol* sym_; | |
e5d5f5ed AM |
3901 | const Sized_relobj_file<size, big_endian>* object_; |
3902 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
3903 | unsigned int locsym_; | |
cf43a2fe AM |
3904 | }; |
3905 | ||
ec661b9d | 3906 | class Plt_stub_ent_hash |
cf43a2fe | 3907 | { |
d1a8cabd | 3908 | public: |
ec661b9d | 3909 | size_t operator()(const Plt_stub_ent& ent) const |
cf43a2fe AM |
3910 | { |
3911 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
3912 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
3913 | ^ ent.addend_ |
3914 | ^ ent.locsym_); | |
cf43a2fe | 3915 | } |
ec661b9d AM |
3916 | }; |
3917 | ||
3918 | // Long branch stub keys. | |
3919 | class Branch_stub_ent | |
3920 | { | |
3921 | public: | |
3922 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, Address to) | |
3923 | : dest_(to), toc_base_off_(0) | |
3924 | { | |
3925 | if (size == 64) | |
3926 | toc_base_off_ = obj->toc_base_offset(); | |
3927 | } | |
3928 | ||
3929 | bool operator==(const Branch_stub_ent& that) const | |
3930 | { | |
3931 | return (this->dest_ == that.dest_ | |
3932 | && (size == 32 | |
3933 | || this->toc_base_off_ == that.toc_base_off_)); | |
3934 | } | |
cf43a2fe | 3935 | |
ec661b9d AM |
3936 | Address dest_; |
3937 | unsigned int toc_base_off_; | |
3938 | }; | |
cf43a2fe | 3939 | |
ec661b9d AM |
3940 | class Branch_stub_ent_hash |
3941 | { | |
3942 | public: | |
3943 | size_t operator()(const Branch_stub_ent& ent) const | |
3944 | { return ent.dest_ ^ ent.toc_base_off_; } | |
3945 | }; | |
cf43a2fe | 3946 | |
ec661b9d | 3947 | // In a sane world this would be a global. |
cf43a2fe | 3948 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 3949 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
3950 | Plt_stub_entries plt_call_stubs_; |
3951 | // Map destination address to stub offset. | |
3952 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
3953 | Branch_stub_ent_hash> Branch_stub_entries; | |
3954 | Branch_stub_entries long_branch_stubs_; | |
3955 | // size of input section | |
3956 | section_size_type orig_data_size_; | |
3957 | // size of stubs | |
9e69ed50 | 3958 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
9d5781f8 AM |
3959 | // Whether .eh_frame info has been created for this stub section. |
3960 | bool eh_frame_added_; | |
cf43a2fe AM |
3961 | }; |
3962 | ||
ec661b9d | 3963 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 3964 | // sym/object/addend combo. |
cf43a2fe AM |
3965 | |
3966 | template<int size, bool big_endian> | |
a3e60ddb | 3967 | bool |
ec661b9d | 3968 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 3969 | Address from, |
c9824451 | 3970 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 3971 | const Symbol* gsym, |
ec661b9d AM |
3972 | unsigned int r_type, |
3973 | Address addend) | |
cf43a2fe | 3974 | { |
ec661b9d | 3975 | Plt_stub_ent ent(object, gsym, r_type, addend); |
9055360d | 3976 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
3977 | std::pair<typename Plt_stub_entries::iterator, bool> p |
3978 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
3979 | if (p.second) | |
3980 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 3981 | return this->can_reach_stub(from, off, r_type); |
cf43a2fe AM |
3982 | } |
3983 | ||
e5d5f5ed | 3984 | template<int size, bool big_endian> |
a3e60ddb | 3985 | bool |
ec661b9d | 3986 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 3987 | Address from, |
c9824451 | 3988 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 3989 | unsigned int locsym_index, |
ec661b9d AM |
3990 | unsigned int r_type, |
3991 | Address addend) | |
e5d5f5ed | 3992 | { |
ec661b9d | 3993 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
9055360d | 3994 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
3995 | std::pair<typename Plt_stub_entries::iterator, bool> p |
3996 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
3997 | if (p.second) | |
3998 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 3999 | return this->can_reach_stub(from, off, r_type); |
e5d5f5ed AM |
4000 | } |
4001 | ||
ec661b9d AM |
4002 | // Find a plt call stub. |
4003 | ||
cf43a2fe | 4004 | template<int size, bool big_endian> |
ec5b8187 | 4005 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4006 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4007 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4008 | const Symbol* gsym, |
ec661b9d AM |
4009 | unsigned int r_type, |
4010 | Address addend) const | |
c9824451 | 4011 | { |
ec661b9d AM |
4012 | Plt_stub_ent ent(object, gsym, r_type, addend); |
4013 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4014 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4015 | } |
4016 | ||
4017 | template<int size, bool big_endian> | |
ec5b8187 | 4018 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4019 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4020 | { |
ec661b9d AM |
4021 | Plt_stub_ent ent(gsym); |
4022 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4023 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
cf43a2fe AM |
4024 | } |
4025 | ||
e5d5f5ed | 4026 | template<int size, bool big_endian> |
ec5b8187 | 4027 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4028 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4029 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4030 | unsigned int locsym_index, |
ec661b9d AM |
4031 | unsigned int r_type, |
4032 | Address addend) const | |
e5d5f5ed | 4033 | { |
ec661b9d AM |
4034 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
4035 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4036 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4037 | } |
4038 | ||
4039 | template<int size, bool big_endian> | |
ec5b8187 | 4040 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4041 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4042 | const Sized_relobj_file<size, big_endian>* object, |
4043 | unsigned int locsym_index) const | |
4044 | { | |
ec661b9d AM |
4045 | Plt_stub_ent ent(object, locsym_index); |
4046 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4047 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
4048 | } | |
4049 | ||
4050 | // Add a long branch stub if we don't already have one to given | |
4051 | // destination. | |
4052 | ||
4053 | template<int size, bool big_endian> | |
a3e60ddb | 4054 | bool |
ec661b9d AM |
4055 | Stub_table<size, big_endian>::add_long_branch_entry( |
4056 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4057 | unsigned int r_type, |
4058 | Address from, | |
ec661b9d AM |
4059 | Address to) |
4060 | { | |
4061 | Branch_stub_ent ent(object, to); | |
4062 | Address off = this->branch_size_; | |
4063 | if (this->long_branch_stubs_.insert(std::make_pair(ent, off)).second) | |
4064 | { | |
4065 | unsigned int stub_size = this->branch_stub_size(to); | |
4066 | this->branch_size_ = off + stub_size; | |
4067 | if (size == 64 && stub_size != 4) | |
4068 | this->targ_->add_branch_lookup_table(to); | |
4069 | } | |
a3e60ddb | 4070 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4071 | } |
4072 | ||
4073 | // Find long branch stub. | |
4074 | ||
4075 | template<int size, bool big_endian> | |
ec5b8187 | 4076 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4077 | Stub_table<size, big_endian>::find_long_branch_entry( |
4078 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4079 | Address to) const |
ec661b9d AM |
4080 | { |
4081 | Branch_stub_ent ent(object, to); | |
4082 | typename Branch_stub_entries::const_iterator p | |
4083 | = this->long_branch_stubs_.find(ent); | |
4084 | return p == this->long_branch_stubs_.end() ? invalid_address : p->second; | |
e5d5f5ed AM |
4085 | } |
4086 | ||
ec661b9d AM |
4087 | // A class to handle .glink. |
4088 | ||
4089 | template<int size, bool big_endian> | |
4090 | class Output_data_glink : public Output_section_data | |
4091 | { | |
4092 | public: | |
9055360d AM |
4093 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4094 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
4095 | static const int pltresolve_size = 16*4; |
4096 | ||
4097 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
4098 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
4099 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
4100 | { } |
4101 | ||
9d5781f8 | 4102 | void |
9055360d | 4103 | add_eh_frame(Layout* layout); |
9d5781f8 | 4104 | |
9055360d AM |
4105 | void |
4106 | add_global_entry(const Symbol*); | |
4107 | ||
4108 | Address | |
4109 | find_global_entry(const Symbol*) const; | |
4110 | ||
4111 | Address | |
4112 | global_entry_address() const | |
4113 | { | |
4114 | gold_assert(this->is_data_size_valid()); | |
4115 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4116 | return this->address() + global_entry_off; | |
9d5781f8 AM |
4117 | } |
4118 | ||
ec661b9d AM |
4119 | protected: |
4120 | // Write to a map file. | |
4121 | void | |
4122 | do_print_to_mapfile(Mapfile* mapfile) const | |
4123 | { mapfile->print_output_data(this, _("** glink")); } | |
4124 | ||
4125 | private: | |
4126 | void | |
4127 | set_final_data_size(); | |
4128 | ||
4129 | // Write out .glink | |
4130 | void | |
4131 | do_write(Output_file*); | |
4132 | ||
4133 | // Allows access to .got and .plt for do_write. | |
4134 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
4135 | |
4136 | // Map sym to stub offset. | |
4137 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
4138 | Global_entry_stub_entries global_entry_stubs_; | |
4139 | ||
4140 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
4141 | }; |
4142 | ||
9055360d AM |
4143 | template<int size, bool big_endian> |
4144 | void | |
4145 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
4146 | { | |
4147 | if (!parameters->options().ld_generated_unwind_info()) | |
4148 | return; | |
4149 | ||
4150 | if (size == 64) | |
4151 | { | |
4152 | if (this->targ_->abiversion() < 2) | |
4153 | layout->add_eh_frame_for_plt(this, | |
4154 | Eh_cie<64>::eh_frame_cie, | |
4155 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4156 | glink_eh_frame_fde_64v1, | |
4157 | sizeof (glink_eh_frame_fde_64v1)); | |
4158 | else | |
4159 | layout->add_eh_frame_for_plt(this, | |
4160 | Eh_cie<64>::eh_frame_cie, | |
4161 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4162 | glink_eh_frame_fde_64v2, | |
4163 | sizeof (glink_eh_frame_fde_64v2)); | |
4164 | } | |
4165 | else | |
4166 | { | |
4167 | // 32-bit .glink can use the default since the CIE return | |
4168 | // address reg, LR, is valid. | |
4169 | layout->add_eh_frame_for_plt(this, | |
4170 | Eh_cie<32>::eh_frame_cie, | |
4171 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4172 | default_fde, | |
4173 | sizeof (default_fde)); | |
4174 | // Except where LR is used in a PIC __glink_PLTresolve. | |
4175 | if (parameters->options().output_is_position_independent()) | |
4176 | layout->add_eh_frame_for_plt(this, | |
4177 | Eh_cie<32>::eh_frame_cie, | |
4178 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4179 | glink_eh_frame_fde_32, | |
4180 | sizeof (glink_eh_frame_fde_32)); | |
4181 | } | |
4182 | } | |
4183 | ||
4184 | template<int size, bool big_endian> | |
4185 | void | |
4186 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
4187 | { | |
4188 | std::pair<typename Global_entry_stub_entries::iterator, bool> p | |
4189 | = this->global_entry_stubs_.insert(std::make_pair(gsym, this->ge_size_)); | |
4190 | if (p.second) | |
4191 | this->ge_size_ += 16; | |
4192 | } | |
4193 | ||
4194 | template<int size, bool big_endian> | |
4195 | typename Output_data_glink<size, big_endian>::Address | |
4196 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
4197 | { | |
4198 | typename Global_entry_stub_entries::const_iterator p | |
4199 | = this->global_entry_stubs_.find(gsym); | |
4200 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
4201 | } | |
4202 | ||
cf43a2fe AM |
4203 | template<int size, bool big_endian> |
4204 | void | |
4205 | Output_data_glink<size, big_endian>::set_final_data_size() | |
4206 | { | |
ec661b9d AM |
4207 | unsigned int count = this->targ_->plt_entry_count(); |
4208 | section_size_type total = 0; | |
cf43a2fe AM |
4209 | |
4210 | if (count != 0) | |
4211 | { | |
4212 | if (size == 32) | |
4213 | { | |
cf43a2fe AM |
4214 | // space for branch table |
4215 | total += 4 * (count - 1); | |
4216 | ||
4217 | total += -total & 15; | |
4218 | total += this->pltresolve_size; | |
4219 | } | |
4220 | else | |
4221 | { | |
cf43a2fe AM |
4222 | total += this->pltresolve_size; |
4223 | ||
4224 | // space for branch table | |
b4f7960d AM |
4225 | total += 4 * count; |
4226 | if (this->targ_->abiversion() < 2) | |
4227 | { | |
4228 | total += 4 * count; | |
4229 | if (count > 0x8000) | |
4230 | total += 4 * (count - 0x8000); | |
4231 | } | |
cf43a2fe AM |
4232 | } |
4233 | } | |
9055360d AM |
4234 | this->end_branch_table_ = total; |
4235 | total = (total + 15) & -16; | |
4236 | total += this->ge_size_; | |
cf43a2fe AM |
4237 | |
4238 | this->set_data_size(total); | |
4239 | } | |
4240 | ||
ec661b9d | 4241 | // Write out plt and long branch stub code. |
cf43a2fe AM |
4242 | |
4243 | template<int size, bool big_endian> | |
4244 | void | |
ec661b9d | 4245 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 4246 | { |
ec661b9d AM |
4247 | if (this->plt_call_stubs_.empty() |
4248 | && this->long_branch_stubs_.empty()) | |
4249 | return; | |
4250 | ||
4251 | const section_size_type start_off = this->offset(); | |
4252 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 4253 | const section_size_type oview_size = |
ec661b9d | 4254 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 4255 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 4256 | unsigned char* p; |
42cacb20 | 4257 | |
cf43a2fe AM |
4258 | if (size == 64) |
4259 | { | |
ec661b9d AM |
4260 | const Output_data_got_powerpc<size, big_endian>* got |
4261 | = this->targ_->got_section(); | |
dd93cd0a | 4262 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 4263 | |
ec661b9d | 4264 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 4265 | { |
ec661b9d AM |
4266 | // The base address of the .plt section. |
4267 | Address plt_base = this->targ_->plt_section()->address(); | |
4268 | Address iplt_base = invalid_address; | |
4269 | ||
4270 | // Write out plt call stubs. | |
4271 | typename Plt_stub_entries::const_iterator cs; | |
4272 | for (cs = this->plt_call_stubs_.begin(); | |
4273 | cs != this->plt_call_stubs_.end(); | |
4274 | ++cs) | |
e5d5f5ed | 4275 | { |
91c2b899 AM |
4276 | bool is_iplt; |
4277 | Address pltoff = this->plt_off(cs, &is_iplt); | |
9e69ed50 | 4278 | Address plt_addr = pltoff; |
91c2b899 | 4279 | if (is_iplt) |
ec661b9d AM |
4280 | { |
4281 | if (iplt_base == invalid_address) | |
4282 | iplt_base = this->targ_->iplt_section()->address(); | |
4283 | plt_addr += iplt_base; | |
4284 | } | |
4285 | else | |
4286 | plt_addr += plt_base; | |
4287 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
4288 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
4289 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 4290 | Address off = plt_addr - got_addr; |
ec661b9d | 4291 | |
9e69ed50 | 4292 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
4293 | gold_error(_("%s: linkage table error against `%s'"), |
4294 | cs->first.object_->name().c_str(), | |
4295 | cs->first.sym_->demangled_name().c_str()); | |
4296 | ||
b4f7960d AM |
4297 | bool plt_load_toc = this->targ_->abiversion() < 2; |
4298 | bool static_chain | |
4299 | = plt_load_toc && parameters->options().plt_static_chain(); | |
4300 | bool thread_safe | |
4301 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
4302 | bool use_fake_dep = false; |
4303 | Address cmp_branch_off = 0; | |
4304 | if (thread_safe) | |
4305 | { | |
4306 | unsigned int pltindex | |
4307 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
4308 | / this->targ_->plt_entry_size()); | |
4309 | Address glinkoff | |
4310 | = (this->targ_->glink_section()->pltresolve_size | |
4311 | + pltindex * 8); | |
4312 | if (pltindex > 32768) | |
4313 | glinkoff += (pltindex - 32768) * 4; | |
4314 | Address to | |
4315 | = this->targ_->glink_section()->address() + glinkoff; | |
4316 | Address from | |
4317 | = (this->stub_address() + cs->second + 24 | |
4318 | + 4 * (ha(off) != 0) | |
4319 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
4320 | + 4 * static_chain); | |
4321 | cmp_branch_off = to - from; | |
4322 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
4323 | } | |
4324 | ||
ec661b9d | 4325 | p = oview + cs->second; |
9e69ed50 | 4326 | if (ha(off) != 0) |
ec661b9d | 4327 | { |
b4f7960d AM |
4328 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4329 | p += 4; | |
397998fc AM |
4330 | if (plt_load_toc) |
4331 | { | |
4332 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
4333 | p += 4; | |
4334 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
4335 | p += 4; | |
4336 | } | |
4337 | else | |
4338 | { | |
4339 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
4340 | p += 4; | |
4341 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
4342 | p += 4; | |
4343 | } | |
b4f7960d AM |
4344 | if (plt_load_toc |
4345 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4346 | { |
b4f7960d AM |
4347 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
4348 | p += 4; | |
9e69ed50 | 4349 | off = 0; |
ec661b9d | 4350 | } |
b4f7960d AM |
4351 | write_insn<big_endian>(p, mtctr_12); |
4352 | p += 4; | |
4353 | if (plt_load_toc) | |
9e69ed50 | 4354 | { |
b4f7960d AM |
4355 | if (use_fake_dep) |
4356 | { | |
4357 | write_insn<big_endian>(p, xor_2_12_12); | |
4358 | p += 4; | |
4359 | write_insn<big_endian>(p, add_11_11_2); | |
4360 | p += 4; | |
4361 | } | |
4362 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
4363 | p += 4; | |
4364 | if (static_chain) | |
4365 | { | |
4366 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
4367 | p += 4; | |
4368 | } | |
9e69ed50 | 4369 | } |
ec661b9d AM |
4370 | } |
4371 | else | |
4372 | { | |
b4f7960d AM |
4373 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4374 | p += 4; | |
4375 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
4376 | p += 4; | |
4377 | if (plt_load_toc | |
4378 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4379 | { |
b4f7960d AM |
4380 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
4381 | p += 4; | |
9e69ed50 | 4382 | off = 0; |
ec661b9d | 4383 | } |
b4f7960d AM |
4384 | write_insn<big_endian>(p, mtctr_12); |
4385 | p += 4; | |
4386 | if (plt_load_toc) | |
9e69ed50 | 4387 | { |
b4f7960d AM |
4388 | if (use_fake_dep) |
4389 | { | |
4390 | write_insn<big_endian>(p, xor_11_12_12); | |
4391 | p += 4; | |
4392 | write_insn<big_endian>(p, add_2_2_11); | |
4393 | p += 4; | |
4394 | } | |
4395 | if (static_chain) | |
4396 | { | |
4397 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
4398 | p += 4; | |
4399 | } | |
4400 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
4401 | p += 4; | |
9e69ed50 | 4402 | } |
ec661b9d | 4403 | } |
9e69ed50 AM |
4404 | if (thread_safe && !use_fake_dep) |
4405 | { | |
b4f7960d AM |
4406 | write_insn<big_endian>(p, cmpldi_2_0); |
4407 | p += 4; | |
4408 | write_insn<big_endian>(p, bnectr_p4); | |
4409 | p += 4; | |
9e69ed50 AM |
4410 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
4411 | } | |
4412 | else | |
4413 | write_insn<big_endian>(p, bctr); | |
e5d5f5ed | 4414 | } |
ec661b9d AM |
4415 | } |
4416 | ||
4417 | // Write out long branch stubs. | |
4418 | typename Branch_stub_entries::const_iterator bs; | |
4419 | for (bs = this->long_branch_stubs_.begin(); | |
4420 | bs != this->long_branch_stubs_.end(); | |
4421 | ++bs) | |
4422 | { | |
4423 | p = oview + this->plt_size_ + bs->second; | |
4424 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4425 | Address delta = bs->first.dest_ - loc; | |
4426 | if (delta + (1 << 25) < 2 << 25) | |
4427 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 4428 | else |
cf43a2fe | 4429 | { |
ec661b9d AM |
4430 | Address brlt_addr |
4431 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
4432 | gold_assert(brlt_addr != invalid_address); | |
4433 | brlt_addr += this->targ_->brlt_section()->address(); | |
4434 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
4435 | Address brltoff = brlt_addr - got_addr; | |
4436 | if (ha(brltoff) == 0) | |
4437 | { | |
b4f7960d | 4438 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
4439 | } |
4440 | else | |
cf43a2fe | 4441 | { |
397998fc AM |
4442 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
4443 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 4444 | } |
b4f7960d | 4445 | write_insn<big_endian>(p, mtctr_12), p += 4; |
ec661b9d | 4446 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 4447 | } |
ec661b9d AM |
4448 | } |
4449 | } | |
4450 | else | |
4451 | { | |
4452 | if (!this->plt_call_stubs_.empty()) | |
4453 | { | |
4454 | // The base address of the .plt section. | |
4455 | Address plt_base = this->targ_->plt_section()->address(); | |
4456 | Address iplt_base = invalid_address; | |
4457 | // The address of _GLOBAL_OFFSET_TABLE_. | |
4458 | Address g_o_t = invalid_address; | |
4459 | ||
4460 | // Write out plt call stubs. | |
4461 | typename Plt_stub_entries::const_iterator cs; | |
4462 | for (cs = this->plt_call_stubs_.begin(); | |
4463 | cs != this->plt_call_stubs_.end(); | |
4464 | ++cs) | |
cf43a2fe | 4465 | { |
91c2b899 AM |
4466 | bool is_iplt; |
4467 | Address plt_addr = this->plt_off(cs, &is_iplt); | |
4468 | if (is_iplt) | |
ec661b9d AM |
4469 | { |
4470 | if (iplt_base == invalid_address) | |
4471 | iplt_base = this->targ_->iplt_section()->address(); | |
4472 | plt_addr += iplt_base; | |
4473 | } | |
4474 | else | |
4475 | plt_addr += plt_base; | |
4476 | ||
4477 | p = oview + cs->second; | |
4478 | if (parameters->options().output_is_position_independent()) | |
4479 | { | |
4480 | Address got_addr; | |
4481 | const Powerpc_relobj<size, big_endian>* ppcobj | |
4482 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
4483 | (cs->first.object_)); | |
4484 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
4485 | { | |
4486 | unsigned int got2 = ppcobj->got2_shndx(); | |
4487 | got_addr = ppcobj->get_output_section_offset(got2); | |
4488 | gold_assert(got_addr != invalid_address); | |
4489 | got_addr += (ppcobj->output_section(got2)->address() | |
4490 | + cs->first.addend_); | |
4491 | } | |
4492 | else | |
4493 | { | |
4494 | if (g_o_t == invalid_address) | |
4495 | { | |
4496 | const Output_data_got_powerpc<size, big_endian>* got | |
4497 | = this->targ_->got_section(); | |
4498 | g_o_t = got->address() + got->g_o_t(); | |
4499 | } | |
4500 | got_addr = g_o_t; | |
4501 | } | |
4502 | ||
9e69ed50 AM |
4503 | Address off = plt_addr - got_addr; |
4504 | if (ha(off) == 0) | |
ec661b9d | 4505 | { |
9e69ed50 | 4506 | write_insn<big_endian>(p + 0, lwz_11_30 + l(off)); |
ec661b9d AM |
4507 | write_insn<big_endian>(p + 4, mtctr_11); |
4508 | write_insn<big_endian>(p + 8, bctr); | |
4509 | } | |
4510 | else | |
4511 | { | |
9e69ed50 AM |
4512 | write_insn<big_endian>(p + 0, addis_11_30 + ha(off)); |
4513 | write_insn<big_endian>(p + 4, lwz_11_11 + l(off)); | |
ec661b9d AM |
4514 | write_insn<big_endian>(p + 8, mtctr_11); |
4515 | write_insn<big_endian>(p + 12, bctr); | |
4516 | } | |
4517 | } | |
4518 | else | |
4519 | { | |
4520 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
4521 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
4522 | write_insn<big_endian>(p + 8, mtctr_11); | |
4523 | write_insn<big_endian>(p + 12, bctr); | |
4524 | } | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | // Write out long branch stubs. | |
4529 | typename Branch_stub_entries::const_iterator bs; | |
4530 | for (bs = this->long_branch_stubs_.begin(); | |
4531 | bs != this->long_branch_stubs_.end(); | |
4532 | ++bs) | |
4533 | { | |
4534 | p = oview + this->plt_size_ + bs->second; | |
4535 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4536 | Address delta = bs->first.dest_ - loc; | |
4537 | if (delta + (1 << 25) < 2 << 25) | |
4538 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
4539 | else if (!parameters->options().output_is_position_independent()) | |
4540 | { | |
4541 | write_insn<big_endian>(p + 0, lis_12 + ha(bs->first.dest_)); | |
4542 | write_insn<big_endian>(p + 4, addi_12_12 + l(bs->first.dest_)); | |
4543 | write_insn<big_endian>(p + 8, mtctr_12); | |
4544 | write_insn<big_endian>(p + 12, bctr); | |
4545 | } | |
4546 | else | |
4547 | { | |
4548 | delta -= 8; | |
4549 | write_insn<big_endian>(p + 0, mflr_0); | |
4550 | write_insn<big_endian>(p + 4, bcl_20_31); | |
4551 | write_insn<big_endian>(p + 8, mflr_12); | |
4552 | write_insn<big_endian>(p + 12, addis_12_12 + ha(delta)); | |
4553 | write_insn<big_endian>(p + 16, addi_12_12 + l(delta)); | |
4554 | write_insn<big_endian>(p + 20, mtlr_0); | |
4555 | write_insn<big_endian>(p + 24, mtctr_12); | |
4556 | write_insn<big_endian>(p + 28, bctr); | |
cf43a2fe AM |
4557 | } |
4558 | } | |
ec661b9d AM |
4559 | } |
4560 | } | |
4561 | ||
4562 | // Write out .glink. | |
4563 | ||
4564 | template<int size, bool big_endian> | |
4565 | void | |
4566 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
4567 | { | |
4568 | const section_size_type off = this->offset(); | |
4569 | const section_size_type oview_size = | |
4570 | convert_to_section_size_type(this->data_size()); | |
4571 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
4572 | unsigned char* p; | |
4573 | ||
4574 | // The base address of the .plt section. | |
4575 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
4576 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 4577 | |
ec661b9d AM |
4578 | if (size == 64) |
4579 | { | |
9055360d | 4580 | if (this->end_branch_table_ != 0) |
b4f7960d | 4581 | { |
9055360d AM |
4582 | // Write pltresolve stub. |
4583 | p = oview; | |
4584 | Address after_bcl = this->address() + 16; | |
4585 | Address pltoff = plt_base - after_bcl; | |
4586 | ||
4587 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 4588 | |
b4f7960d | 4589 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 4590 | { |
9055360d AM |
4591 | write_insn<big_endian>(p, mflr_12), p += 4; |
4592 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4593 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4594 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4595 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
4596 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4597 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4598 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
4599 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4600 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
4601 | } | |
4602 | else | |
4603 | { | |
4604 | write_insn<big_endian>(p, mflr_0), p += 4; | |
4605 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4606 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4607 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4608 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
4609 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
4610 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4611 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
4612 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4613 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
4614 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4615 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
4616 | } | |
4617 | write_insn<big_endian>(p, bctr), p += 4; | |
4618 | while (p < oview + this->pltresolve_size) | |
4619 | write_insn<big_endian>(p, nop), p += 4; | |
4620 | ||
4621 | // Write lazy link call stubs. | |
4622 | uint32_t indx = 0; | |
4623 | while (p < oview + this->end_branch_table_) | |
4624 | { | |
4625 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 4626 | { |
9055360d AM |
4627 | if (indx < 0x8000) |
4628 | { | |
4629 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
4630 | } | |
4631 | else | |
4632 | { | |
bbec1a5d | 4633 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
4634 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
4635 | } | |
b4f7960d | 4636 | } |
9055360d AM |
4637 | uint32_t branch_off = 8 - (p - oview); |
4638 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
4639 | indx++; | |
cf43a2fe | 4640 | } |
9055360d AM |
4641 | } |
4642 | ||
4643 | Address plt_base = this->targ_->plt_section()->address(); | |
4644 | Address iplt_base = invalid_address; | |
4645 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4646 | Address global_entry_base = this->address() + global_entry_off; | |
4647 | typename Global_entry_stub_entries::const_iterator ge; | |
4648 | for (ge = this->global_entry_stubs_.begin(); | |
4649 | ge != this->global_entry_stubs_.end(); | |
4650 | ++ge) | |
4651 | { | |
4652 | p = oview + global_entry_off + ge->second; | |
4653 | Address plt_addr = ge->first->plt_offset(); | |
4654 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
4655 | && ge->first->can_use_relative_reloc(false)) | |
4656 | { | |
4657 | if (iplt_base == invalid_address) | |
4658 | iplt_base = this->targ_->iplt_section()->address(); | |
4659 | plt_addr += iplt_base; | |
4660 | } | |
4661 | else | |
4662 | plt_addr += plt_base; | |
4663 | Address my_addr = global_entry_base + ge->second; | |
4664 | Address off = plt_addr - my_addr; | |
4665 | ||
4666 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
4667 | gold_error(_("%s: linkage table error against `%s'"), | |
4668 | ge->first->object()->name().c_str(), | |
4669 | ge->first->demangled_name().c_str()); | |
4670 | ||
4671 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
4672 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
4673 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4674 | write_insn<big_endian>(p, bctr); | |
cf43a2fe AM |
4675 | } |
4676 | } | |
4677 | else | |
4678 | { | |
ec661b9d AM |
4679 | const Output_data_got_powerpc<size, big_endian>* got |
4680 | = this->targ_->got_section(); | |
dd93cd0a AM |
4681 | // The address of _GLOBAL_OFFSET_TABLE_. |
4682 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 4683 | |
cf43a2fe | 4684 | // Write out pltresolve branch table. |
ec661b9d | 4685 | p = oview; |
cf43a2fe | 4686 | unsigned int the_end = oview_size - this->pltresolve_size; |
c9269dff | 4687 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
4688 | while (p < end_p - 8 * 4) |
4689 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
4690 | while (p < end_p) | |
4691 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 4692 | |
cf43a2fe AM |
4693 | // Write out pltresolve call stub. |
4694 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 4695 | { |
ec661b9d | 4696 | Address res0_off = 0; |
dd93cd0a AM |
4697 | Address after_bcl_off = the_end + 12; |
4698 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
4699 | |
4700 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
4701 | write_insn<big_endian>(p + 4, mflr_0); | |
4702 | write_insn<big_endian>(p + 8, bcl_20_31); | |
4703 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
4704 | write_insn<big_endian>(p + 16, mflr_12); | |
4705 | write_insn<big_endian>(p + 20, mtlr_0); | |
4706 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
4707 | ||
dd93cd0a | 4708 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
4709 | |
4710 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
4711 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
4712 | { | |
4713 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
4714 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
4715 | } | |
4716 | else | |
4717 | { | |
4718 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
4719 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
4720 | } | |
4721 | write_insn<big_endian>(p + 40, mtctr_0); | |
4722 | write_insn<big_endian>(p + 44, add_0_11_11); | |
4723 | write_insn<big_endian>(p + 48, add_11_0_11); | |
4724 | write_insn<big_endian>(p + 52, bctr); | |
4725 | write_insn<big_endian>(p + 56, nop); | |
4726 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4727 | } |
cf43a2fe | 4728 | else |
42cacb20 | 4729 | { |
ec661b9d | 4730 | Address res0 = this->address(); |
cf43a2fe AM |
4731 | |
4732 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
4733 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
4734 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4735 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
4736 | else | |
4737 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
4738 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
4739 | write_insn<big_endian>(p + 16, mtctr_0); | |
4740 | write_insn<big_endian>(p + 20, add_0_11_11); | |
4741 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4742 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
4743 | else | |
4744 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
4745 | write_insn<big_endian>(p + 28, add_11_0_11); | |
4746 | write_insn<big_endian>(p + 32, bctr); | |
4747 | write_insn<big_endian>(p + 36, nop); | |
4748 | write_insn<big_endian>(p + 40, nop); | |
4749 | write_insn<big_endian>(p + 44, nop); | |
4750 | write_insn<big_endian>(p + 48, nop); | |
4751 | write_insn<big_endian>(p + 52, nop); | |
4752 | write_insn<big_endian>(p + 56, nop); | |
4753 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4754 | } |
cf43a2fe | 4755 | p += 64; |
42cacb20 DE |
4756 | } |
4757 | ||
cf43a2fe AM |
4758 | of->write_output_view(off, oview_size, oview); |
4759 | } | |
4760 | ||
f3a0ed29 AM |
4761 | |
4762 | // A class to handle linker generated save/restore functions. | |
4763 | ||
4764 | template<int size, bool big_endian> | |
4765 | class Output_data_save_res : public Output_section_data_build | |
4766 | { | |
4767 | public: | |
4768 | Output_data_save_res(Symbol_table* symtab); | |
4769 | ||
4770 | protected: | |
4771 | // Write to a map file. | |
4772 | void | |
4773 | do_print_to_mapfile(Mapfile* mapfile) const | |
4774 | { mapfile->print_output_data(this, _("** save/restore")); } | |
4775 | ||
4776 | void | |
4777 | do_write(Output_file*); | |
4778 | ||
4779 | private: | |
4780 | // The maximum size of save/restore contents. | |
4781 | static const unsigned int savres_max = 218*4; | |
4782 | ||
4783 | void | |
4784 | savres_define(Symbol_table* symtab, | |
4785 | const char *name, | |
4786 | unsigned int lo, unsigned int hi, | |
4787 | unsigned char* write_ent(unsigned char*, int), | |
4788 | unsigned char* write_tail(unsigned char*, int)); | |
4789 | ||
4790 | unsigned char *contents_; | |
4791 | }; | |
4792 | ||
4793 | template<bool big_endian> | |
4794 | static unsigned char* | |
4795 | savegpr0(unsigned char* p, int r) | |
4796 | { | |
4797 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4798 | write_insn<big_endian>(p, insn); | |
4799 | return p + 4; | |
4800 | } | |
4801 | ||
4802 | template<bool big_endian> | |
4803 | static unsigned char* | |
4804 | savegpr0_tail(unsigned char* p, int r) | |
4805 | { | |
4806 | p = savegpr0<big_endian>(p, r); | |
4807 | uint32_t insn = std_0_1 + 16; | |
4808 | write_insn<big_endian>(p, insn); | |
4809 | p = p + 4; | |
4810 | write_insn<big_endian>(p, blr); | |
4811 | return p + 4; | |
4812 | } | |
4813 | ||
4814 | template<bool big_endian> | |
62fe925a | 4815 | static unsigned char* |
f3a0ed29 AM |
4816 | restgpr0(unsigned char* p, int r) |
4817 | { | |
4818 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4819 | write_insn<big_endian>(p, insn); | |
4820 | return p + 4; | |
4821 | } | |
4822 | ||
4823 | template<bool big_endian> | |
62fe925a | 4824 | static unsigned char* |
f3a0ed29 AM |
4825 | restgpr0_tail(unsigned char* p, int r) |
4826 | { | |
4827 | uint32_t insn = ld_0_1 + 16; | |
4828 | write_insn<big_endian>(p, insn); | |
4829 | p = p + 4; | |
4830 | p = restgpr0<big_endian>(p, r); | |
4831 | write_insn<big_endian>(p, mtlr_0); | |
4832 | p = p + 4; | |
4833 | if (r == 29) | |
4834 | { | |
4835 | p = restgpr0<big_endian>(p, 30); | |
4836 | p = restgpr0<big_endian>(p, 31); | |
4837 | } | |
4838 | write_insn<big_endian>(p, blr); | |
4839 | return p + 4; | |
4840 | } | |
4841 | ||
4842 | template<bool big_endian> | |
62fe925a | 4843 | static unsigned char* |
f3a0ed29 AM |
4844 | savegpr1(unsigned char* p, int r) |
4845 | { | |
4846 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4847 | write_insn<big_endian>(p, insn); | |
4848 | return p + 4; | |
4849 | } | |
4850 | ||
4851 | template<bool big_endian> | |
62fe925a | 4852 | static unsigned char* |
f3a0ed29 AM |
4853 | savegpr1_tail(unsigned char* p, int r) |
4854 | { | |
4855 | p = savegpr1<big_endian>(p, r); | |
4856 | write_insn<big_endian>(p, blr); | |
4857 | return p + 4; | |
4858 | } | |
4859 | ||
4860 | template<bool big_endian> | |
62fe925a | 4861 | static unsigned char* |
f3a0ed29 AM |
4862 | restgpr1(unsigned char* p, int r) |
4863 | { | |
4864 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4865 | write_insn<big_endian>(p, insn); | |
4866 | return p + 4; | |
4867 | } | |
4868 | ||
4869 | template<bool big_endian> | |
62fe925a | 4870 | static unsigned char* |
f3a0ed29 AM |
4871 | restgpr1_tail(unsigned char* p, int r) |
4872 | { | |
4873 | p = restgpr1<big_endian>(p, r); | |
4874 | write_insn<big_endian>(p, blr); | |
4875 | return p + 4; | |
4876 | } | |
4877 | ||
4878 | template<bool big_endian> | |
62fe925a | 4879 | static unsigned char* |
f3a0ed29 AM |
4880 | savefpr(unsigned char* p, int r) |
4881 | { | |
4882 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4883 | write_insn<big_endian>(p, insn); | |
4884 | return p + 4; | |
4885 | } | |
4886 | ||
4887 | template<bool big_endian> | |
62fe925a | 4888 | static unsigned char* |
f3a0ed29 AM |
4889 | savefpr0_tail(unsigned char* p, int r) |
4890 | { | |
4891 | p = savefpr<big_endian>(p, r); | |
4892 | write_insn<big_endian>(p, std_0_1 + 16); | |
4893 | p = p + 4; | |
4894 | write_insn<big_endian>(p, blr); | |
4895 | return p + 4; | |
4896 | } | |
4897 | ||
4898 | template<bool big_endian> | |
62fe925a | 4899 | static unsigned char* |
f3a0ed29 AM |
4900 | restfpr(unsigned char* p, int r) |
4901 | { | |
4902 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4903 | write_insn<big_endian>(p, insn); | |
4904 | return p + 4; | |
4905 | } | |
4906 | ||
4907 | template<bool big_endian> | |
62fe925a | 4908 | static unsigned char* |
f3a0ed29 AM |
4909 | restfpr0_tail(unsigned char* p, int r) |
4910 | { | |
4911 | write_insn<big_endian>(p, ld_0_1 + 16); | |
4912 | p = p + 4; | |
4913 | p = restfpr<big_endian>(p, r); | |
4914 | write_insn<big_endian>(p, mtlr_0); | |
4915 | p = p + 4; | |
4916 | if (r == 29) | |
4917 | { | |
4918 | p = restfpr<big_endian>(p, 30); | |
4919 | p = restfpr<big_endian>(p, 31); | |
4920 | } | |
4921 | write_insn<big_endian>(p, blr); | |
4922 | return p + 4; | |
4923 | } | |
4924 | ||
4925 | template<bool big_endian> | |
62fe925a | 4926 | static unsigned char* |
f3a0ed29 AM |
4927 | savefpr1_tail(unsigned char* p, int r) |
4928 | { | |
4929 | p = savefpr<big_endian>(p, r); | |
4930 | write_insn<big_endian>(p, blr); | |
4931 | return p + 4; | |
4932 | } | |
4933 | ||
4934 | template<bool big_endian> | |
62fe925a | 4935 | static unsigned char* |
f3a0ed29 AM |
4936 | restfpr1_tail(unsigned char* p, int r) |
4937 | { | |
4938 | p = restfpr<big_endian>(p, r); | |
4939 | write_insn<big_endian>(p, blr); | |
4940 | return p + 4; | |
4941 | } | |
4942 | ||
4943 | template<bool big_endian> | |
62fe925a | 4944 | static unsigned char* |
f3a0ed29 AM |
4945 | savevr(unsigned char* p, int r) |
4946 | { | |
4947 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
4948 | write_insn<big_endian>(p, insn); | |
4949 | p = p + 4; | |
4950 | insn = stvx_0_12_0 + (r << 21); | |
4951 | write_insn<big_endian>(p, insn); | |
4952 | return p + 4; | |
4953 | } | |
4954 | ||
4955 | template<bool big_endian> | |
62fe925a | 4956 | static unsigned char* |
f3a0ed29 AM |
4957 | savevr_tail(unsigned char* p, int r) |
4958 | { | |
4959 | p = savevr<big_endian>(p, r); | |
4960 | write_insn<big_endian>(p, blr); | |
4961 | return p + 4; | |
4962 | } | |
4963 | ||
4964 | template<bool big_endian> | |
62fe925a | 4965 | static unsigned char* |
f3a0ed29 AM |
4966 | restvr(unsigned char* p, int r) |
4967 | { | |
4968 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
4969 | write_insn<big_endian>(p, insn); | |
4970 | p = p + 4; | |
4971 | insn = lvx_0_12_0 + (r << 21); | |
4972 | write_insn<big_endian>(p, insn); | |
4973 | return p + 4; | |
4974 | } | |
4975 | ||
4976 | template<bool big_endian> | |
62fe925a | 4977 | static unsigned char* |
f3a0ed29 AM |
4978 | restvr_tail(unsigned char* p, int r) |
4979 | { | |
4980 | p = restvr<big_endian>(p, r); | |
4981 | write_insn<big_endian>(p, blr); | |
4982 | return p + 4; | |
4983 | } | |
4984 | ||
4985 | ||
4986 | template<int size, bool big_endian> | |
4987 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
4988 | Symbol_table* symtab) | |
4989 | : Output_section_data_build(4), | |
4990 | contents_(NULL) | |
4991 | { | |
4992 | this->savres_define(symtab, | |
4993 | "_savegpr0_", 14, 31, | |
4994 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
4995 | this->savres_define(symtab, | |
4996 | "_restgpr0_", 14, 29, | |
4997 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
4998 | this->savres_define(symtab, | |
4999 | "_restgpr0_", 30, 31, | |
5000 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5001 | this->savres_define(symtab, | |
5002 | "_savegpr1_", 14, 31, | |
5003 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
5004 | this->savres_define(symtab, | |
5005 | "_restgpr1_", 14, 31, | |
5006 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
5007 | this->savres_define(symtab, | |
5008 | "_savefpr_", 14, 31, | |
5009 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
5010 | this->savres_define(symtab, | |
5011 | "_restfpr_", 14, 29, | |
5012 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5013 | this->savres_define(symtab, | |
5014 | "_restfpr_", 30, 31, | |
5015 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5016 | this->savres_define(symtab, | |
5017 | "._savef", 14, 31, | |
5018 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
5019 | this->savres_define(symtab, | |
5020 | "._restf", 14, 31, | |
5021 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
5022 | this->savres_define(symtab, | |
5023 | "_savevr_", 20, 31, | |
5024 | savevr<big_endian>, savevr_tail<big_endian>); | |
5025 | this->savres_define(symtab, | |
5026 | "_restvr_", 20, 31, | |
5027 | restvr<big_endian>, restvr_tail<big_endian>); | |
5028 | } | |
5029 | ||
5030 | template<int size, bool big_endian> | |
5031 | void | |
5032 | Output_data_save_res<size, big_endian>::savres_define( | |
5033 | Symbol_table* symtab, | |
5034 | const char *name, | |
5035 | unsigned int lo, unsigned int hi, | |
5036 | unsigned char* write_ent(unsigned char*, int), | |
5037 | unsigned char* write_tail(unsigned char*, int)) | |
5038 | { | |
5039 | size_t len = strlen(name); | |
5040 | bool writing = false; | |
5041 | char sym[16]; | |
5042 | ||
5043 | memcpy(sym, name, len); | |
5044 | sym[len + 2] = 0; | |
5045 | ||
5046 | for (unsigned int i = lo; i <= hi; i++) | |
5047 | { | |
5048 | sym[len + 0] = i / 10 + '0'; | |
5049 | sym[len + 1] = i % 10 + '0'; | |
5050 | Symbol* gsym = symtab->lookup(sym); | |
5051 | bool refd = gsym != NULL && gsym->is_undefined(); | |
5052 | writing = writing || refd; | |
5053 | if (writing) | |
5054 | { | |
5055 | if (this->contents_ == NULL) | |
5056 | this->contents_ = new unsigned char[this->savres_max]; | |
5057 | ||
ec661b9d | 5058 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
5059 | unsigned char* p = this->contents_ + value; |
5060 | if (i != hi) | |
5061 | p = write_ent(p, i); | |
5062 | else | |
5063 | p = write_tail(p, i); | |
ec661b9d | 5064 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
5065 | this->set_current_data_size(cur_size); |
5066 | if (refd) | |
5067 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
5068 | this, value, cur_size - value, | |
5069 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
5070 | elfcpp::STV_HIDDEN, 0, false, false); | |
5071 | } | |
5072 | } | |
5073 | } | |
5074 | ||
5075 | // Write out save/restore. | |
5076 | ||
5077 | template<int size, bool big_endian> | |
5078 | void | |
5079 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
5080 | { | |
ec661b9d | 5081 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
5082 | const section_size_type oview_size = |
5083 | convert_to_section_size_type(this->data_size()); | |
5084 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5085 | memcpy(oview, this->contents_, oview_size); | |
5086 | of->write_output_view(off, oview_size, oview); | |
5087 | } | |
5088 | ||
5089 | ||
cf43a2fe | 5090 | // Create the glink section. |
42cacb20 | 5091 | |
cf43a2fe AM |
5092 | template<int size, bool big_endian> |
5093 | void | |
5094 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
5095 | { | |
5096 | if (this->glink_ == NULL) | |
5097 | { | |
5098 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 5099 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
5100 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
5101 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
5102 | this->glink_, ORDER_TEXT, false); | |
5103 | } | |
42cacb20 DE |
5104 | } |
5105 | ||
5106 | // Create a PLT entry for a global symbol. | |
5107 | ||
5108 | template<int size, bool big_endian> | |
5109 | void | |
ec661b9d AM |
5110 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
5111 | Layout* layout, | |
5112 | Symbol* gsym) | |
42cacb20 | 5113 | { |
e5d5f5ed AM |
5114 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
5115 | && gsym->can_use_relative_reloc(false)) | |
5116 | { | |
5117 | if (this->iplt_ == NULL) | |
40b469d7 | 5118 | this->make_iplt_section(symtab, layout); |
03e25981 | 5119 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
5120 | } |
5121 | else | |
5122 | { | |
5123 | if (this->plt_ == NULL) | |
40b469d7 | 5124 | this->make_plt_section(symtab, layout); |
03e25981 | 5125 | this->plt_->add_entry(gsym); |
e5d5f5ed | 5126 | } |
e5d5f5ed | 5127 | } |
42cacb20 | 5128 | |
e5d5f5ed | 5129 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 5130 | |
e5d5f5ed AM |
5131 | template<int size, bool big_endian> |
5132 | void | |
5133 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 5134 | Symbol_table* symtab, |
e5d5f5ed | 5135 | Layout* layout, |
ec661b9d AM |
5136 | Sized_relobj_file<size, big_endian>* relobj, |
5137 | unsigned int r_sym) | |
e5d5f5ed AM |
5138 | { |
5139 | if (this->iplt_ == NULL) | |
40b469d7 | 5140 | this->make_iplt_section(symtab, layout); |
03e25981 | 5141 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
5142 | } |
5143 | ||
0e70b911 CC |
5144 | // Return the number of entries in the PLT. |
5145 | ||
5146 | template<int size, bool big_endian> | |
5147 | unsigned int | |
5148 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
5149 | { | |
5150 | if (this->plt_ == NULL) | |
5151 | return 0; | |
b3ccdeb5 | 5152 | return this->plt_->entry_count(); |
0e70b911 CC |
5153 | } |
5154 | ||
dd93cd0a | 5155 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
5156 | |
5157 | template<int size, bool big_endian> | |
5158 | unsigned int | |
dd93cd0a | 5159 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
5160 | Symbol_table* symtab, |
5161 | Layout* layout, | |
5162 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 5163 | { |
dd93cd0a | 5164 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
5165 | { |
5166 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
5167 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
5168 | Output_data_got_powerpc<size, big_endian>* got |
5169 | = this->got_section(symtab, layout); | |
5170 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
5171 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
5172 | got_offset, 0); | |
dd93cd0a | 5173 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 5174 | } |
dd93cd0a | 5175 | return this->tlsld_got_offset_; |
42cacb20 DE |
5176 | } |
5177 | ||
95a2c8d6 RS |
5178 | // Get the Reference_flags for a particular relocation. |
5179 | ||
5180 | template<int size, bool big_endian> | |
5181 | int | |
88b8e639 AM |
5182 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
5183 | unsigned int r_type, | |
5184 | const Target_powerpc* target) | |
95a2c8d6 | 5185 | { |
88b8e639 AM |
5186 | int ref = 0; |
5187 | ||
95a2c8d6 RS |
5188 | switch (r_type) |
5189 | { | |
5190 | case elfcpp::R_POWERPC_NONE: | |
5191 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5192 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
5193 | case elfcpp::R_PPC64_TOC: | |
5194 | // No symbol reference. | |
88b8e639 | 5195 | break; |
95a2c8d6 | 5196 | |
dd93cd0a AM |
5197 | case elfcpp::R_PPC64_ADDR64: |
5198 | case elfcpp::R_PPC64_UADDR64: | |
5199 | case elfcpp::R_POWERPC_ADDR32: | |
5200 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 5201 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 5202 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
5203 | case elfcpp::R_POWERPC_ADDR16_LO: |
5204 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5205 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
5206 | ref = Symbol::ABSOLUTE_REF; |
5207 | break; | |
95a2c8d6 | 5208 | |
dd93cd0a AM |
5209 | case elfcpp::R_POWERPC_ADDR24: |
5210 | case elfcpp::R_POWERPC_ADDR14: | |
5211 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5212 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
5213 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
5214 | break; | |
dd93cd0a | 5215 | |
e5d5f5ed | 5216 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 5217 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 5218 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
5219 | case elfcpp::R_POWERPC_REL16: |
5220 | case elfcpp::R_POWERPC_REL16_LO: | |
5221 | case elfcpp::R_POWERPC_REL16_HI: | |
5222 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
5223 | ref = Symbol::RELATIVE_REF; |
5224 | break; | |
95a2c8d6 | 5225 | |
dd93cd0a | 5226 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 5227 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
5228 | case elfcpp::R_POWERPC_REL14: |
5229 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5230 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
5231 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
5232 | break; | |
95a2c8d6 RS |
5233 | |
5234 | case elfcpp::R_POWERPC_GOT16: | |
5235 | case elfcpp::R_POWERPC_GOT16_LO: | |
5236 | case elfcpp::R_POWERPC_GOT16_HI: | |
5237 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
5238 | case elfcpp::R_PPC64_GOT16_DS: |
5239 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
5240 | case elfcpp::R_PPC64_TOC16: |
5241 | case elfcpp::R_PPC64_TOC16_LO: | |
5242 | case elfcpp::R_PPC64_TOC16_HI: | |
5243 | case elfcpp::R_PPC64_TOC16_HA: | |
5244 | case elfcpp::R_PPC64_TOC16_DS: | |
5245 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
5246 | // Absolute in GOT. | |
88b8e639 AM |
5247 | ref = Symbol::ABSOLUTE_REF; |
5248 | break; | |
95a2c8d6 RS |
5249 | |
5250 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5251 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
5252 | ref = Symbol::TLS_REF; |
5253 | break; | |
95a2c8d6 RS |
5254 | |
5255 | case elfcpp::R_POWERPC_COPY: | |
5256 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5257 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5258 | case elfcpp::R_POWERPC_RELATIVE: | |
5259 | case elfcpp::R_POWERPC_DTPMOD: | |
5260 | default: | |
5261 | // Not expected. We will give an error later. | |
88b8e639 | 5262 | break; |
95a2c8d6 | 5263 | } |
88b8e639 AM |
5264 | |
5265 | if (size == 64 && target->abiversion() < 2) | |
5266 | ref |= Symbol::FUNC_DESC_ABI; | |
5267 | return ref; | |
95a2c8d6 RS |
5268 | } |
5269 | ||
42cacb20 DE |
5270 | // Report an unsupported relocation against a local symbol. |
5271 | ||
5272 | template<int size, bool big_endian> | |
5273 | void | |
5274 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
5275 | Sized_relobj_file<size, big_endian>* object, |
5276 | unsigned int r_type) | |
42cacb20 DE |
5277 | { |
5278 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
5279 | object->name().c_str(), r_type); | |
5280 | } | |
5281 | ||
5282 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
5283 | // dynamic linker does not support it, issue an error. | |
5284 | ||
5285 | template<int size, bool big_endian> | |
5286 | void | |
5287 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
5288 | unsigned int r_type) | |
5289 | { | |
5290 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
5291 | ||
5292 | // These are the relocation types supported by glibc for both 32-bit | |
5293 | // and 64-bit powerpc. | |
5294 | switch (r_type) | |
5295 | { | |
3ea0a085 | 5296 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
5297 | case elfcpp::R_POWERPC_RELATIVE: |
5298 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5299 | case elfcpp::R_POWERPC_DTPMOD: | |
5300 | case elfcpp::R_POWERPC_DTPREL: | |
5301 | case elfcpp::R_POWERPC_TPREL: | |
5302 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5303 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 5304 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 5305 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 5306 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 5307 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
5308 | case elfcpp::R_POWERPC_ADDR16: |
5309 | case elfcpp::R_POWERPC_UADDR16: | |
5310 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5311 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5312 | case elfcpp::R_POWERPC_ADDR16_HA: | |
5313 | case elfcpp::R_POWERPC_ADDR14: | |
5314 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5315 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5316 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 5317 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
5318 | case elfcpp::R_POWERPC_TPREL16: |
5319 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5320 | case elfcpp::R_POWERPC_TPREL16_HI: | |
5321 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
5322 | return; |
5323 | ||
5324 | default: | |
5325 | break; | |
5326 | } | |
5327 | ||
5328 | if (size == 64) | |
5329 | { | |
5330 | switch (r_type) | |
5331 | { | |
5332 | // These are the relocation types supported only on 64-bit. | |
5333 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 5334 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 5335 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 5336 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 5337 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
5338 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5339 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
5340 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5341 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5342 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5343 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 5344 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
5345 | case elfcpp::R_POWERPC_ADDR30: |
5346 | case elfcpp::R_PPC64_TPREL16_DS: | |
5347 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5348 | case elfcpp::R_PPC64_TPREL16_HIGH: |
5349 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
5350 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
5351 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
5352 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
5353 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
5354 | return; |
5355 | ||
5356 | default: | |
5357 | break; | |
5358 | } | |
5359 | } | |
5360 | else | |
5361 | { | |
5362 | switch (r_type) | |
5363 | { | |
5364 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
5365 | // ??? glibc ld.so doesn't need to support these. |
5366 | case elfcpp::R_POWERPC_DTPREL16: | |
5367 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5368 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5369 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
5370 | return; | |
42cacb20 DE |
5371 | |
5372 | default: | |
5373 | break; | |
5374 | } | |
5375 | } | |
5376 | ||
5377 | // This prevents us from issuing more than one error per reloc | |
5378 | // section. But we can still wind up issuing more than one | |
5379 | // error per object file. | |
5380 | if (this->issued_non_pic_error_) | |
5381 | return; | |
33aea2fd | 5382 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
5383 | object->error(_("requires unsupported dynamic reloc; " |
5384 | "recompile with -fPIC")); | |
5385 | this->issued_non_pic_error_ = true; | |
5386 | return; | |
5387 | } | |
5388 | ||
e5d5f5ed AM |
5389 | // Return whether we need to make a PLT entry for a relocation of the |
5390 | // given type against a STT_GNU_IFUNC symbol. | |
5391 | ||
5392 | template<int size, bool big_endian> | |
5393 | bool | |
5394 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 5395 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 5396 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
5397 | unsigned int r_type, |
5398 | bool report_err) | |
e5d5f5ed | 5399 | { |
c9824451 AM |
5400 | // In non-pic code any reference will resolve to the plt call stub |
5401 | // for the ifunc symbol. | |
9055360d AM |
5402 | if ((size == 32 || target->abiversion() >= 2) |
5403 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
5404 | return true; |
5405 | ||
e5d5f5ed AM |
5406 | switch (r_type) |
5407 | { | |
b3ccdeb5 | 5408 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
5409 | case elfcpp::R_POWERPC_ADDR32: |
5410 | case elfcpp::R_POWERPC_UADDR32: | |
5411 | if (size == 32) | |
b3ccdeb5 | 5412 | return false; |
e5d5f5ed AM |
5413 | break; |
5414 | ||
5415 | case elfcpp::R_PPC64_ADDR64: | |
5416 | case elfcpp::R_PPC64_UADDR64: | |
5417 | if (size == 64) | |
b3ccdeb5 | 5418 | return false; |
e5d5f5ed AM |
5419 | break; |
5420 | ||
b3ccdeb5 | 5421 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
5422 | case elfcpp::R_POWERPC_GOT16: |
5423 | case elfcpp::R_POWERPC_GOT16_LO: | |
5424 | case elfcpp::R_POWERPC_GOT16_HI: | |
5425 | case elfcpp::R_POWERPC_GOT16_HA: | |
5426 | case elfcpp::R_PPC64_GOT16_DS: | |
5427 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 5428 | return false; |
e5d5f5ed | 5429 | |
b3ccdeb5 | 5430 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
5431 | case elfcpp::R_POWERPC_ADDR24: |
5432 | case elfcpp::R_POWERPC_ADDR14: | |
5433 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5434 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5435 | case elfcpp::R_POWERPC_REL24: | |
5436 | case elfcpp::R_PPC_PLTREL24: | |
5437 | case elfcpp::R_POWERPC_REL14: | |
5438 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5439 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
5440 | return true; | |
5441 | ||
5442 | default: | |
5443 | break; | |
5444 | } | |
5445 | ||
5446 | // Anything else is a problem. | |
5447 | // If we are building a static executable, the libc startup function | |
5448 | // responsible for applying indirect function relocations is going | |
5449 | // to complain about the reloc type. | |
5450 | // If we are building a dynamic executable, we will have a text | |
5451 | // relocation. The dynamic loader will set the text segment | |
5452 | // writable and non-executable to apply text relocations. So we'll | |
5453 | // segfault when trying to run the indirection function to resolve | |
5454 | // the reloc. | |
b3ccdeb5 AM |
5455 | if (report_err) |
5456 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
5457 | object->name().c_str(), r_type); |
5458 | return false; | |
5459 | } | |
5460 | ||
42cacb20 DE |
5461 | // Scan a relocation for a local symbol. |
5462 | ||
5463 | template<int size, bool big_endian> | |
5464 | inline void | |
5465 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
5466 | Symbol_table* symtab, |
5467 | Layout* layout, | |
5468 | Target_powerpc<size, big_endian>* target, | |
5469 | Sized_relobj_file<size, big_endian>* object, | |
5470 | unsigned int data_shndx, | |
5471 | Output_section* output_section, | |
5472 | const elfcpp::Rela<size, big_endian>& reloc, | |
5473 | unsigned int r_type, | |
e5d5f5ed | 5474 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 5475 | bool is_discarded) |
42cacb20 | 5476 | { |
e3deeb9c AM |
5477 | this->maybe_skip_tls_get_addr_call(r_type, NULL); |
5478 | ||
5479 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5480 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5481 | { | |
5482 | this->expect_tls_get_addr_call(); | |
5483 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5484 | if (tls_type != tls::TLSOPT_NONE) | |
5485 | this->skip_next_tls_get_addr_call(); | |
5486 | } | |
5487 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5488 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5489 | { | |
5490 | this->expect_tls_get_addr_call(); | |
5491 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5492 | if (tls_type != tls::TLSOPT_NONE) | |
5493 | this->skip_next_tls_get_addr_call(); | |
5494 | } | |
5495 | ||
dd93cd0a AM |
5496 | Powerpc_relobj<size, big_endian>* ppc_object |
5497 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
5498 | ||
bfdfa4cd AM |
5499 | if (is_discarded) |
5500 | { | |
5501 | if (size == 64 | |
5502 | && data_shndx == ppc_object->opd_shndx() | |
5503 | && r_type == elfcpp::R_PPC64_ADDR64) | |
5504 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
5505 | return; | |
5506 | } | |
5507 | ||
e5d5f5ed AM |
5508 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
5509 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 5510 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 5511 | { |
ec661b9d AM |
5512 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
5513 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5514 | r_type, r_sym, reloc.get_r_addend()); | |
5515 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 5516 | } |
e5d5f5ed | 5517 | |
42cacb20 DE |
5518 | switch (r_type) |
5519 | { | |
5520 | case elfcpp::R_POWERPC_NONE: | |
5521 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5522 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6ce78956 | 5523 | case elfcpp::R_PPC64_TOCSAVE: |
7404fe1b | 5524 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
5525 | break; |
5526 | ||
5527 | case elfcpp::R_PPC64_TOC: | |
5528 | { | |
5529 | Output_data_got_powerpc<size, big_endian>* got | |
5530 | = target->got_section(symtab, layout); | |
5531 | if (parameters->options().output_is_position_independent()) | |
5532 | { | |
bfdfa4cd AM |
5533 | Address off = reloc.get_r_offset(); |
5534 | if (size == 64 | |
9055360d | 5535 | && target->abiversion() < 2 |
bfdfa4cd AM |
5536 | && data_shndx == ppc_object->opd_shndx() |
5537 | && ppc_object->get_opd_discard(off - 8)) | |
5538 | break; | |
5539 | ||
dd93cd0a | 5540 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 5541 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
5542 | rela_dyn->add_output_section_relative(got->output_section(), |
5543 | elfcpp::R_POWERPC_RELATIVE, | |
5544 | output_section, | |
bfdfa4cd AM |
5545 | object, data_shndx, off, |
5546 | symobj->toc_base_offset()); | |
dd93cd0a AM |
5547 | } |
5548 | } | |
42cacb20 DE |
5549 | break; |
5550 | ||
5551 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 5552 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 5553 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
5554 | case elfcpp::R_POWERPC_UADDR32: |
5555 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 5556 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 5557 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
5558 | case elfcpp::R_POWERPC_ADDR16_HI: |
5559 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 5560 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
5561 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5562 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
5563 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5564 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5565 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5566 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
5567 | case elfcpp::R_PPC64_ADDR16_DS: | |
5568 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
5569 | case elfcpp::R_POWERPC_ADDR14: | |
5570 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5571 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
5572 | // If building a shared library (or a position-independent |
5573 | // executable), we need to create a dynamic relocation for | |
5574 | // this location. | |
c9824451 | 5575 | if (parameters->options().output_is_position_independent() |
9055360d | 5576 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 5577 | { |
b3ccdeb5 AM |
5578 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5579 | is_ifunc); | |
1f98a074 | 5580 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
5581 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
5582 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 5583 | { |
b3ccdeb5 AM |
5584 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
5585 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5586 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
5587 | output_section, data_shndx, |
5588 | reloc.get_r_offset(), | |
c9824451 | 5589 | reloc.get_r_addend(), false); |
2e702c99 | 5590 | } |
1f98a074 | 5591 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 5592 | { |
dd93cd0a | 5593 | check_non_pic(object, r_type); |
dd93cd0a AM |
5594 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
5595 | data_shndx, reloc.get_r_offset(), | |
5596 | reloc.get_r_addend()); | |
2e702c99 | 5597 | } |
1f98a074 AM |
5598 | else |
5599 | { | |
5600 | gold_assert(lsym.get_st_value() == 0); | |
5601 | unsigned int shndx = lsym.get_st_shndx(); | |
5602 | bool is_ordinary; | |
5603 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
5604 | &is_ordinary); | |
5605 | if (!is_ordinary) | |
5606 | object->error(_("section symbol %u has bad shndx %u"), | |
5607 | r_sym, shndx); | |
5608 | else | |
5609 | rela_dyn->add_local_section(object, shndx, r_type, | |
5610 | output_section, data_shndx, | |
5611 | reloc.get_r_offset()); | |
5612 | } | |
2e702c99 | 5613 | } |
42cacb20 DE |
5614 | break; |
5615 | ||
5616 | case elfcpp::R_POWERPC_REL24: | |
c9824451 | 5617 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 5618 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
5619 | case elfcpp::R_POWERPC_REL14: |
5620 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5621 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 AM |
5622 | if (!is_ifunc) |
5623 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5624 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
5625 | reloc.get_r_addend()); | |
ec661b9d AM |
5626 | break; |
5627 | ||
5628 | case elfcpp::R_PPC64_REL64: | |
5629 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 5630 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 5631 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 5632 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 5633 | case elfcpp::R_POWERPC_REL16_HA: |
dd93cd0a | 5634 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 5635 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 5636 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 5637 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
5638 | case elfcpp::R_PPC64_SECTOFF_DS: |
5639 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
5640 | case elfcpp::R_POWERPC_TPREL16: | |
5641 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5642 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 5643 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
5644 | case elfcpp::R_PPC64_TPREL16_DS: |
5645 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
5646 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
5647 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 5648 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 5649 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 5650 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 5651 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
5652 | case elfcpp::R_POWERPC_DTPREL16: |
5653 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5654 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5655 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
5656 | case elfcpp::R_PPC64_DTPREL16_DS: |
5657 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5658 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
5659 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
5660 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
5661 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
5662 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
5663 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
5664 | case elfcpp::R_PPC64_TLSGD: |
5665 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 5666 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
5667 | break; |
5668 | ||
5669 | case elfcpp::R_POWERPC_GOT16: | |
5670 | case elfcpp::R_POWERPC_GOT16_LO: | |
5671 | case elfcpp::R_POWERPC_GOT16_HI: | |
5672 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
5673 | case elfcpp::R_PPC64_GOT16_DS: |
5674 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 5675 | { |
c9269dff | 5676 | // The symbol requires a GOT entry. |
dd93cd0a AM |
5677 | Output_data_got_powerpc<size, big_endian>* got |
5678 | = target->got_section(symtab, layout); | |
5679 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 5680 | |
e5d5f5ed | 5681 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 5682 | { |
b01a4b04 AM |
5683 | if (is_ifunc |
5684 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
5685 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
5686 | else | |
5687 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
5688 | } | |
5689 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
5690 | { | |
5691 | // If we are generating a shared object or a pie, this | |
5692 | // symbol's GOT entry will be set by a dynamic relocation. | |
5693 | unsigned int off; | |
5694 | off = got->add_constant(0); | |
5695 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 5696 | |
b3ccdeb5 AM |
5697 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5698 | is_ifunc); | |
5699 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
5700 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5701 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 5702 | got, off, 0, false); |
2e702c99 | 5703 | } |
42cacb20 DE |
5704 | } |
5705 | break; | |
5706 | ||
cf43a2fe AM |
5707 | case elfcpp::R_PPC64_TOC16: |
5708 | case elfcpp::R_PPC64_TOC16_LO: | |
5709 | case elfcpp::R_PPC64_TOC16_HI: | |
5710 | case elfcpp::R_PPC64_TOC16_HA: | |
5711 | case elfcpp::R_PPC64_TOC16_DS: | |
5712 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
5713 | // We need a GOT section. |
5714 | target->got_section(symtab, layout); | |
5715 | break; | |
5716 | ||
dd93cd0a AM |
5717 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
5718 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
5719 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
5720 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
5721 | { | |
5722 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5723 | if (tls_type == tls::TLSOPT_NONE) | |
5724 | { | |
5725 | Output_data_got_powerpc<size, big_endian>* got | |
5726 | = target->got_section(symtab, layout); | |
5727 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
5728 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
5729 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
5730 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
5731 | } |
5732 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5733 | { | |
5734 | // no GOT relocs needed for Local Exec. | |
5735 | } | |
5736 | else | |
5737 | gold_unreachable(); | |
5738 | } | |
42cacb20 DE |
5739 | break; |
5740 | ||
dd93cd0a AM |
5741 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
5742 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
5743 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
5744 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
5745 | { | |
5746 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5747 | if (tls_type == tls::TLSOPT_NONE) | |
5748 | target->tlsld_got_offset(symtab, layout, object); | |
5749 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5750 | { | |
5751 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
5752 | if (parameters->options().emit_relocs()) |
5753 | { | |
5754 | Output_section* os = layout->tls_segment()->first_section(); | |
5755 | gold_assert(os != NULL); | |
5756 | os->set_needs_symtab_index(); | |
5757 | } | |
dd93cd0a AM |
5758 | } |
5759 | else | |
5760 | gold_unreachable(); | |
5761 | } | |
42cacb20 | 5762 | break; |
42cacb20 | 5763 | |
dd93cd0a AM |
5764 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
5765 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
5766 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
5767 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
5768 | { | |
5769 | Output_data_got_powerpc<size, big_endian>* got | |
5770 | = target->got_section(symtab, layout); | |
5771 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 5772 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
5773 | } |
5774 | break; | |
42cacb20 | 5775 | |
dd93cd0a AM |
5776 | case elfcpp::R_POWERPC_GOT_TPREL16: |
5777 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
5778 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
5779 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
5780 | { | |
5781 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
5782 | if (tls_type == tls::TLSOPT_NONE) | |
5783 | { | |
dd93cd0a | 5784 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
5785 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
5786 | { | |
5787 | Output_data_got_powerpc<size, big_endian>* got | |
5788 | = target->got_section(symtab, layout); | |
5789 | unsigned int off = got->add_constant(0); | |
5790 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
5791 | ||
5792 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
5793 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
5794 | elfcpp::R_POWERPC_TPREL, | |
5795 | got, off, 0); | |
5796 | } | |
dd93cd0a AM |
5797 | } |
5798 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5799 | { | |
5800 | // no GOT relocs needed for Local Exec. | |
5801 | } | |
5802 | else | |
5803 | gold_unreachable(); | |
5804 | } | |
5805 | break; | |
5806 | ||
5807 | default: | |
5808 | unsupported_reloc_local(object, r_type); | |
5809 | break; | |
5810 | } | |
d8f5a274 AM |
5811 | |
5812 | switch (r_type) | |
5813 | { | |
5814 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
5815 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
5816 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5817 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
5818 | case elfcpp::R_POWERPC_GOT16: | |
5819 | case elfcpp::R_PPC64_GOT16_DS: | |
5820 | case elfcpp::R_PPC64_TOC16: | |
5821 | case elfcpp::R_PPC64_TOC16_DS: | |
5822 | ppc_object->set_has_small_toc_reloc(); | |
5823 | default: | |
5824 | break; | |
5825 | } | |
dd93cd0a AM |
5826 | } |
5827 | ||
5828 | // Report an unsupported relocation against a global symbol. | |
5829 | ||
5830 | template<int size, bool big_endian> | |
5831 | void | |
5832 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
5833 | Sized_relobj_file<size, big_endian>* object, | |
5834 | unsigned int r_type, | |
5835 | Symbol* gsym) | |
5836 | { | |
42cacb20 DE |
5837 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
5838 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
5839 | } | |
5840 | ||
5841 | // Scan a relocation for a global symbol. | |
5842 | ||
5843 | template<int size, bool big_endian> | |
5844 | inline void | |
5845 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
5846 | Symbol_table* symtab, |
5847 | Layout* layout, | |
5848 | Target_powerpc<size, big_endian>* target, | |
5849 | Sized_relobj_file<size, big_endian>* object, | |
5850 | unsigned int data_shndx, | |
5851 | Output_section* output_section, | |
5852 | const elfcpp::Rela<size, big_endian>& reloc, | |
5853 | unsigned int r_type, | |
5854 | Symbol* gsym) | |
42cacb20 | 5855 | { |
e3deeb9c AM |
5856 | if (this->maybe_skip_tls_get_addr_call(r_type, gsym) == Track_tls::SKIP) |
5857 | return; | |
5858 | ||
5859 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5860 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5861 | { | |
5862 | this->expect_tls_get_addr_call(); | |
5863 | const bool final = gsym->final_value_is_known(); | |
5864 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
5865 | if (tls_type != tls::TLSOPT_NONE) | |
5866 | this->skip_next_tls_get_addr_call(); | |
5867 | } | |
5868 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5869 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5870 | { | |
5871 | this->expect_tls_get_addr_call(); | |
5872 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5873 | if (tls_type != tls::TLSOPT_NONE) | |
5874 | this->skip_next_tls_get_addr_call(); | |
5875 | } | |
5876 | ||
dd93cd0a AM |
5877 | Powerpc_relobj<size, big_endian>* ppc_object |
5878 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
5879 | ||
e5d5f5ed | 5880 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 5881 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
5882 | bool pushed_ifunc = false; |
5883 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d AM |
5884 | { |
5885 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5886 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
5887 | reloc.get_r_addend()); | |
5888 | target->make_plt_entry(symtab, layout, gsym); | |
9055360d | 5889 | pushed_ifunc = true; |
ec661b9d | 5890 | } |
e5d5f5ed | 5891 | |
42cacb20 DE |
5892 | switch (r_type) |
5893 | { | |
5894 | case elfcpp::R_POWERPC_NONE: | |
5895 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5896 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 5897 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 5898 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
5899 | break; |
5900 | ||
5901 | case elfcpp::R_PPC64_TOC: | |
5902 | { | |
5903 | Output_data_got_powerpc<size, big_endian>* got | |
5904 | = target->got_section(symtab, layout); | |
5905 | if (parameters->options().output_is_position_independent()) | |
5906 | { | |
bfdfa4cd AM |
5907 | Address off = reloc.get_r_offset(); |
5908 | if (size == 64 | |
5909 | && data_shndx == ppc_object->opd_shndx() | |
5910 | && ppc_object->get_opd_discard(off - 8)) | |
5911 | break; | |
5912 | ||
dd93cd0a AM |
5913 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
5914 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
5915 | if (data_shndx != ppc_object->opd_shndx()) | |
5916 | symobj = static_cast | |
5917 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
5918 | rela_dyn->add_output_section_relative(got->output_section(), | |
5919 | elfcpp::R_POWERPC_RELATIVE, | |
5920 | output_section, | |
bfdfa4cd | 5921 | object, data_shndx, off, |
dd93cd0a AM |
5922 | symobj->toc_base_offset()); |
5923 | } | |
5924 | } | |
42cacb20 DE |
5925 | break; |
5926 | ||
c9269dff | 5927 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 5928 | if (size == 64 |
9055360d | 5929 | && target->abiversion() < 2 |
bfdfa4cd AM |
5930 | && data_shndx == ppc_object->opd_shndx() |
5931 | && (gsym->is_defined_in_discarded_section() | |
5932 | || gsym->object() != object)) | |
5933 | { | |
5934 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
5935 | break; | |
5936 | } | |
5937 | // Fall thru | |
dd93cd0a | 5938 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 5939 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
5940 | case elfcpp::R_POWERPC_UADDR32: |
5941 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
5942 | case elfcpp::R_POWERPC_ADDR16: |
5943 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5944 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5945 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 5946 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
5947 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5948 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
5949 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5950 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5951 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5952 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
5953 | case elfcpp::R_PPC64_ADDR16_DS: | |
5954 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
5955 | case elfcpp::R_POWERPC_ADDR14: | |
5956 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5957 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 5958 | { |
c9269dff AM |
5959 | // Make a PLT entry if necessary. |
5960 | if (gsym->needs_plt_entry()) | |
5961 | { | |
9055360d AM |
5962 | // Since this is not a PC-relative relocation, we may be |
5963 | // taking the address of a function. In that case we need to | |
5964 | // set the entry in the dynamic symbol table to the address of | |
5965 | // the PLT call stub. | |
5966 | bool need_ifunc_plt = false; | |
5967 | if ((size == 32 || target->abiversion() >= 2) | |
5968 | && gsym->is_from_dynobj() | |
5969 | && !parameters->options().output_is_position_independent()) | |
5970 | { | |
5971 | gsym->set_needs_dynsym_value(); | |
5972 | need_ifunc_plt = true; | |
5973 | } | |
5974 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 AM |
5975 | { |
5976 | target->push_branch(ppc_object, data_shndx, | |
5977 | reloc.get_r_offset(), r_type, | |
5978 | elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
5979 | reloc.get_r_addend()); | |
5980 | target->make_plt_entry(symtab, layout, gsym); | |
5981 | } | |
c9269dff AM |
5982 | } |
5983 | // Make a dynamic relocation if necessary. | |
88b8e639 | 5984 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 5985 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 5986 | { |
a82bef93 ST |
5987 | if (!parameters->options().output_is_position_independent() |
5988 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
5989 | { |
5990 | target->copy_reloc(symtab, layout, object, | |
5991 | data_shndx, output_section, gsym, reloc); | |
5992 | } | |
9055360d AM |
5993 | else if ((((size == 32 |
5994 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
5995 | || (size == 64 | |
5996 | && r_type == elfcpp::R_PPC64_ADDR64 | |
5997 | && target->abiversion() >= 2)) | |
627b30b7 AM |
5998 | && gsym->can_use_relative_reloc(false) |
5999 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
6000 | && parameters->options().shared())) | |
6001 | || (size == 64 | |
6002 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 6003 | && target->abiversion() < 2 |
627b30b7 AM |
6004 | && (gsym->can_use_relative_reloc(false) |
6005 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 6006 | { |
b3ccdeb5 AM |
6007 | Reloc_section* rela_dyn |
6008 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6009 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6010 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6011 | rela_dyn->add_symbolless_global_addend( |
6012 | gsym, dynrel, output_section, object, data_shndx, | |
6013 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
6014 | } |
6015 | else | |
6016 | { | |
b3ccdeb5 AM |
6017 | Reloc_section* rela_dyn |
6018 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 6019 | check_non_pic(object, r_type); |
dd93cd0a AM |
6020 | rela_dyn->add_global(gsym, r_type, output_section, |
6021 | object, data_shndx, | |
6022 | reloc.get_r_offset(), | |
6023 | reloc.get_r_addend()); | |
2e702c99 RM |
6024 | } |
6025 | } | |
42cacb20 DE |
6026 | } |
6027 | break; | |
6028 | ||
cf43a2fe | 6029 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6030 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
6031 | if (!is_ifunc) |
6032 | { | |
6033 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6034 | r_type, | |
6035 | elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
6036 | reloc.get_r_addend()); | |
6037 | if (gsym->needs_plt_entry() | |
6038 | || (!gsym->final_value_is_known() | |
6039 | && (gsym->is_undefined() | |
6040 | || gsym->is_from_dynobj() | |
6041 | || gsym->is_preemptible()))) | |
6042 | target->make_plt_entry(symtab, layout, gsym); | |
6043 | } | |
3ea0a085 | 6044 | // Fall thru |
42cacb20 | 6045 | |
3ea0a085 | 6046 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6047 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 6048 | // Make a dynamic relocation if necessary. |
88b8e639 | 6049 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 6050 | { |
a82bef93 ST |
6051 | if (!parameters->options().output_is_position_independent() |
6052 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
6053 | { |
6054 | target->copy_reloc(symtab, layout, object, | |
6055 | data_shndx, output_section, gsym, | |
6056 | reloc); | |
6057 | } | |
6058 | else | |
6059 | { | |
b3ccdeb5 AM |
6060 | Reloc_section* rela_dyn |
6061 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
6062 | check_non_pic(object, r_type); |
6063 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
6064 | data_shndx, reloc.get_r_offset(), | |
6065 | reloc.get_r_addend()); | |
6066 | } | |
6067 | } | |
6068 | break; | |
6069 | ||
ec661b9d AM |
6070 | case elfcpp::R_POWERPC_REL14: |
6071 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6072 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 AM |
6073 | if (!is_ifunc) |
6074 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6075 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
6076 | reloc.get_r_addend()); | |
ec661b9d AM |
6077 | break; |
6078 | ||
6ce78956 AM |
6079 | case elfcpp::R_POWERPC_REL16: |
6080 | case elfcpp::R_POWERPC_REL16_LO: | |
6081 | case elfcpp::R_POWERPC_REL16_HI: | |
6082 | case elfcpp::R_POWERPC_REL16_HA: | |
dd93cd0a | 6083 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6084 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6085 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6086 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6087 | case elfcpp::R_PPC64_SECTOFF_DS: |
6088 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6089 | case elfcpp::R_POWERPC_TPREL16: | |
6090 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6091 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6092 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6093 | case elfcpp::R_PPC64_TPREL16_DS: |
6094 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6095 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6096 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6097 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6098 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6099 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6100 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6101 | case elfcpp::R_POWERPC_DTPREL16: |
6102 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6103 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6104 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6105 | case elfcpp::R_PPC64_DTPREL16_DS: |
6106 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6107 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6108 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6109 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6110 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6111 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6112 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6113 | case elfcpp::R_PPC64_TLSGD: |
6114 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6115 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
6116 | break; |
6117 | ||
42cacb20 DE |
6118 | case elfcpp::R_POWERPC_GOT16: |
6119 | case elfcpp::R_POWERPC_GOT16_LO: | |
6120 | case elfcpp::R_POWERPC_GOT16_HI: | |
6121 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6122 | case elfcpp::R_PPC64_GOT16_DS: |
6123 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6124 | { |
c9269dff AM |
6125 | // The symbol requires a GOT entry. |
6126 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
6127 | |
6128 | got = target->got_section(symtab, layout); | |
2e702c99 | 6129 | if (gsym->final_value_is_known()) |
2e702c99 | 6130 | { |
b01a4b04 AM |
6131 | if (is_ifunc |
6132 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6133 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
6134 | else | |
6135 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
6136 | } | |
6137 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
6138 | { | |
6139 | // If we are generating a shared object or a pie, this | |
6140 | // symbol's GOT entry will be set by a dynamic relocation. | |
6141 | unsigned int off = got->add_constant(0); | |
6142 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
6143 | ||
b3ccdeb5 AM |
6144 | Reloc_section* rela_dyn |
6145 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6146 | ||
e5d5f5ed | 6147 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
6148 | && !((size == 32 |
6149 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
6150 | && gsym->visibility() == elfcpp::STV_PROTECTED |
6151 | && parameters->options().shared())) | |
2e702c99 | 6152 | { |
b3ccdeb5 AM |
6153 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6154 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6155 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
6156 | } | |
6157 | else | |
6158 | { | |
6159 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
6160 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 6161 | } |
2e702c99 | 6162 | } |
42cacb20 DE |
6163 | } |
6164 | break; | |
6165 | ||
cf43a2fe AM |
6166 | case elfcpp::R_PPC64_TOC16: |
6167 | case elfcpp::R_PPC64_TOC16_LO: | |
6168 | case elfcpp::R_PPC64_TOC16_HI: | |
6169 | case elfcpp::R_PPC64_TOC16_HA: | |
6170 | case elfcpp::R_PPC64_TOC16_DS: | |
6171 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6172 | // We need a GOT section. |
6173 | target->got_section(symtab, layout); | |
6174 | break; | |
6175 | ||
dd93cd0a AM |
6176 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6177 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6178 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6179 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6180 | { | |
6181 | const bool final = gsym->final_value_is_known(); | |
6182 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
6183 | if (tls_type == tls::TLSOPT_NONE) | |
6184 | { | |
6185 | Output_data_got_powerpc<size, big_endian>* got | |
6186 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
6187 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6188 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
6189 | elfcpp::R_POWERPC_DTPMOD, |
6190 | elfcpp::R_POWERPC_DTPREL); | |
6191 | } | |
6192 | else if (tls_type == tls::TLSOPT_TO_IE) | |
6193 | { | |
acc276d8 AM |
6194 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6195 | { | |
6196 | Output_data_got_powerpc<size, big_endian>* got | |
6197 | = target->got_section(symtab, layout); | |
6198 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6199 | if (gsym->is_undefined() | |
6200 | || gsym->is_from_dynobj()) | |
6201 | { | |
6202 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6203 | elfcpp::R_POWERPC_TPREL); | |
6204 | } | |
6205 | else | |
6206 | { | |
6207 | unsigned int off = got->add_constant(0); | |
6208 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6209 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6210 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6211 | got, off, 0); | |
6212 | } | |
6213 | } | |
dd93cd0a AM |
6214 | } |
6215 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6216 | { | |
6217 | // no GOT relocs needed for Local Exec. | |
6218 | } | |
6219 | else | |
6220 | gold_unreachable(); | |
6221 | } | |
42cacb20 DE |
6222 | break; |
6223 | ||
dd93cd0a AM |
6224 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6225 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6226 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6227 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6228 | { | |
6229 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6230 | if (tls_type == tls::TLSOPT_NONE) | |
6231 | target->tlsld_got_offset(symtab, layout, object); | |
6232 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6233 | { | |
6234 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6235 | if (parameters->options().emit_relocs()) |
6236 | { | |
6237 | Output_section* os = layout->tls_segment()->first_section(); | |
6238 | gold_assert(os != NULL); | |
6239 | os->set_needs_symtab_index(); | |
6240 | } | |
dd93cd0a AM |
6241 | } |
6242 | else | |
6243 | gold_unreachable(); | |
6244 | } | |
6245 | break; | |
6246 | ||
6247 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6248 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6249 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6250 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6251 | { | |
6252 | Output_data_got_powerpc<size, big_endian>* got | |
6253 | = target->got_section(symtab, layout); | |
bd73a62d AM |
6254 | if (!gsym->final_value_is_known() |
6255 | && (gsym->is_from_dynobj() | |
6256 | || gsym->is_undefined() | |
6257 | || gsym->is_preemptible())) | |
6258 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
6259 | target->rela_dyn_section(layout), | |
6260 | elfcpp::R_POWERPC_DTPREL); | |
6261 | else | |
6262 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
6263 | } |
6264 | break; | |
6265 | ||
6266 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6267 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6268 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
6269 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6270 | { | |
6271 | const bool final = gsym->final_value_is_known(); | |
6272 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
6273 | if (tls_type == tls::TLSOPT_NONE) | |
6274 | { | |
acc276d8 AM |
6275 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6276 | { | |
6277 | Output_data_got_powerpc<size, big_endian>* got | |
6278 | = target->got_section(symtab, layout); | |
6279 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6280 | if (gsym->is_undefined() | |
6281 | || gsym->is_from_dynobj()) | |
6282 | { | |
6283 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6284 | elfcpp::R_POWERPC_TPREL); | |
6285 | } | |
6286 | else | |
6287 | { | |
6288 | unsigned int off = got->add_constant(0); | |
6289 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6290 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6291 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6292 | got, off, 0); | |
6293 | } | |
6294 | } | |
dd93cd0a AM |
6295 | } |
6296 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6297 | { | |
6298 | // no GOT relocs needed for Local Exec. | |
6299 | } | |
6300 | else | |
6301 | gold_unreachable(); | |
6302 | } | |
42cacb20 DE |
6303 | break; |
6304 | ||
6305 | default: | |
6306 | unsupported_reloc_global(object, r_type, gsym); | |
6307 | break; | |
6308 | } | |
d8f5a274 AM |
6309 | |
6310 | switch (r_type) | |
6311 | { | |
6312 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
6313 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
6314 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6315 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6316 | case elfcpp::R_POWERPC_GOT16: | |
6317 | case elfcpp::R_PPC64_GOT16_DS: | |
6318 | case elfcpp::R_PPC64_TOC16: | |
6319 | case elfcpp::R_PPC64_TOC16_DS: | |
6320 | ppc_object->set_has_small_toc_reloc(); | |
6321 | default: | |
6322 | break; | |
6323 | } | |
42cacb20 DE |
6324 | } |
6325 | ||
6d03d481 ST |
6326 | // Process relocations for gc. |
6327 | ||
6328 | template<int size, bool big_endian> | |
6329 | void | |
6330 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
6331 | Symbol_table* symtab, |
6332 | Layout* layout, | |
6333 | Sized_relobj_file<size, big_endian>* object, | |
6334 | unsigned int data_shndx, | |
6335 | unsigned int, | |
6336 | const unsigned char* prelocs, | |
6337 | size_t reloc_count, | |
6338 | Output_section* output_section, | |
6339 | bool needs_special_offset_handling, | |
6340 | size_t local_symbol_count, | |
6341 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
6342 | { |
6343 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 6344 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
e81fea4d AM |
6345 | Powerpc_relobj<size, big_endian>* ppc_object |
6346 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6347 | if (size == 64) | |
6348 | ppc_object->set_opd_valid(); | |
6349 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
6350 | { | |
6351 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
6352 | for (p = ppc_object->access_from_map()->begin(); | |
6353 | p != ppc_object->access_from_map()->end(); | |
6354 | ++p) | |
6355 | { | |
6356 | Address dst_off = p->first; | |
6357 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
6358 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
6359 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
6360 | { | |
efc6fa12 | 6361 | Relobj* src_obj = s->first; |
e81fea4d AM |
6362 | unsigned int src_indx = s->second; |
6363 | symtab->gc()->add_reference(src_obj, src_indx, | |
6364 | ppc_object, dst_indx); | |
6365 | } | |
6366 | p->second.clear(); | |
6367 | } | |
6368 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 6369 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
6370 | // Don't look at .opd relocs as .opd will reference everything. |
6371 | return; | |
6372 | } | |
6d03d481 | 6373 | |
41cbeecc | 6374 | gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan, |
3ff2ccb0 | 6375 | typename Target_powerpc::Relocatable_size_for_reloc>( |
6d03d481 ST |
6376 | symtab, |
6377 | layout, | |
6378 | this, | |
6379 | object, | |
6380 | data_shndx, | |
6381 | prelocs, | |
6382 | reloc_count, | |
6383 | output_section, | |
6384 | needs_special_offset_handling, | |
6385 | local_symbol_count, | |
6386 | plocal_symbols); | |
6387 | } | |
6388 | ||
e81fea4d AM |
6389 | // Handle target specific gc actions when adding a gc reference from |
6390 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
6391 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
6392 | // section of a function descriptor. | |
6393 | ||
6394 | template<int size, bool big_endian> | |
6395 | void | |
6396 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
6397 | Symbol_table* symtab, | |
efc6fa12 | 6398 | Relobj* src_obj, |
e81fea4d | 6399 | unsigned int src_shndx, |
efc6fa12 | 6400 | Relobj* dst_obj, |
e81fea4d AM |
6401 | unsigned int dst_shndx, |
6402 | Address dst_off) const | |
6403 | { | |
6c77229c AM |
6404 | if (size != 64 || dst_obj->is_dynamic()) |
6405 | return; | |
6406 | ||
e81fea4d AM |
6407 | Powerpc_relobj<size, big_endian>* ppc_object |
6408 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 6409 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6410 | { |
6411 | if (ppc_object->opd_valid()) | |
6412 | { | |
6413 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
6414 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
6415 | } | |
6416 | else | |
6417 | { | |
6418 | // If we haven't run scan_opd_relocs, we must delay | |
6419 | // processing this function descriptor reference. | |
6420 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
6421 | } | |
6422 | } | |
6423 | } | |
6424 | ||
6425 | // Add any special sections for this symbol to the gc work list. | |
6426 | // For powerpc64, this adds the code section of a function | |
6427 | // descriptor. | |
6428 | ||
6429 | template<int size, bool big_endian> | |
6430 | void | |
6431 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
6432 | Symbol_table* symtab, | |
6433 | Symbol* sym) const | |
6434 | { | |
6435 | if (size == 64) | |
6436 | { | |
6437 | Powerpc_relobj<size, big_endian>* ppc_object | |
6438 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
6439 | bool is_ordinary; | |
6440 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 6441 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6442 | { |
6443 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
6444 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
6445 | if (ppc_object->opd_valid()) |
6446 | { | |
6447 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
6448 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
6449 | dst_indx)); | |
c6de8ed4 AM |
6450 | } |
6451 | else | |
6452 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
6453 | } |
6454 | } | |
6455 | } | |
6456 | ||
dc3714f3 AM |
6457 | // For a symbol location in .opd, set LOC to the location of the |
6458 | // function entry. | |
6459 | ||
6460 | template<int size, bool big_endian> | |
6461 | void | |
6462 | Target_powerpc<size, big_endian>::do_function_location( | |
6463 | Symbol_location* loc) const | |
6464 | { | |
a2d7bf59 | 6465 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
6466 | { |
6467 | if (loc->object->is_dynamic()) | |
6468 | { | |
6469 | Powerpc_dynobj<size, big_endian>* ppc_object | |
6470 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
6471 | if (loc->shndx == ppc_object->opd_shndx()) | |
6472 | { | |
6473 | Address dest_off; | |
6474 | Address off = loc->offset - ppc_object->opd_address(); | |
6475 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
6476 | loc->offset = dest_off; | |
6477 | } | |
6478 | } | |
6479 | else | |
6480 | { | |
6481 | const Powerpc_relobj<size, big_endian>* ppc_object | |
6482 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
6483 | if (loc->shndx == ppc_object->opd_shndx()) | |
6484 | { | |
6485 | Address dest_off; | |
6486 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
6487 | loc->offset = dest_off; | |
6488 | } | |
6489 | } | |
6490 | } | |
6491 | } | |
6492 | ||
bbec1a5d AM |
6493 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
6494 | // compiled with -fsplit-stack. The function calls non-split-stack | |
6495 | // code. Change the function to ensure it has enough stack space to | |
6496 | // call some random function. | |
6497 | ||
6498 | template<int size, bool big_endian> | |
6499 | void | |
6500 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
6501 | Relobj* object, | |
6502 | unsigned int shndx, | |
6503 | section_offset_type fnoffset, | |
6504 | section_size_type fnsize, | |
6505 | unsigned char* view, | |
6506 | section_size_type view_size, | |
6507 | std::string* from, | |
6508 | std::string* to) const | |
6509 | { | |
6510 | // 32-bit not supported. | |
6511 | if (size == 32) | |
6512 | { | |
6513 | // warn | |
6514 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6515 | view, view_size, from, to); | |
6516 | return; | |
6517 | } | |
6518 | ||
6519 | // The function always starts with | |
6520 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
6521 | // addis %r12,%r1,-allocate@ha | |
6522 | // addi %r12,%r12,-allocate@l | |
6523 | // cmpld %r12,%r0 | |
6524 | // but note that the addis or addi may be replaced with a nop | |
6525 | ||
6526 | unsigned char *entry = view + fnoffset; | |
6527 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6528 | ||
6529 | if ((insn & 0xffff0000) == addis_2_12) | |
6530 | { | |
6531 | /* Skip ELFv2 global entry code. */ | |
6532 | entry += 8; | |
6533 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6534 | } | |
6535 | ||
6536 | unsigned char *pinsn = entry; | |
6537 | bool ok = false; | |
6538 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
6539 | if (insn == ld_private_ss) | |
6540 | { | |
6541 | int32_t allocate = 0; | |
6542 | while (1) | |
6543 | { | |
6544 | pinsn += 4; | |
6545 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
6546 | if ((insn & 0xffff0000) == addis_12_1) | |
6547 | allocate += (insn & 0xffff) << 16; | |
6548 | else if ((insn & 0xffff0000) == addi_12_1 | |
6549 | || (insn & 0xffff0000) == addi_12_12) | |
6550 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
6551 | else if (insn != nop) | |
6552 | break; | |
6553 | } | |
6554 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
6555 | { | |
6556 | int extra = parameters->options().split_stack_adjust_size(); | |
6557 | allocate -= extra; | |
6558 | if (allocate >= 0 || extra < 0) | |
6559 | { | |
6560 | object->error(_("split-stack stack size overflow at " | |
6561 | "section %u offset %0zx"), | |
6562 | shndx, static_cast<size_t>(fnoffset)); | |
6563 | return; | |
6564 | } | |
6565 | pinsn = entry + 4; | |
6566 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
6567 | if (insn != addis_12_1) | |
6568 | { | |
6569 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6570 | pinsn += 4; | |
6571 | insn = addi_12_12 | (allocate & 0xffff); | |
6572 | if (insn != addi_12_12) | |
6573 | { | |
6574 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6575 | pinsn += 4; | |
6576 | } | |
6577 | } | |
6578 | else | |
6579 | { | |
6580 | insn = addi_12_1 | (allocate & 0xffff); | |
6581 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6582 | pinsn += 4; | |
6583 | } | |
6584 | if (pinsn != entry + 12) | |
6585 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
6586 | ||
6587 | ok = true; | |
6588 | } | |
6589 | } | |
6590 | ||
6591 | if (!ok) | |
6592 | { | |
6593 | if (!object->has_no_split_stack()) | |
6594 | object->error(_("failed to match split-stack sequence at " | |
6595 | "section %u offset %0zx"), | |
6596 | shndx, static_cast<size_t>(fnoffset)); | |
6597 | } | |
6598 | } | |
6599 | ||
42cacb20 DE |
6600 | // Scan relocations for a section. |
6601 | ||
6602 | template<int size, bool big_endian> | |
6603 | void | |
6604 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
6605 | Symbol_table* symtab, |
6606 | Layout* layout, | |
6607 | Sized_relobj_file<size, big_endian>* object, | |
6608 | unsigned int data_shndx, | |
6609 | unsigned int sh_type, | |
6610 | const unsigned char* prelocs, | |
6611 | size_t reloc_count, | |
6612 | Output_section* output_section, | |
6613 | bool needs_special_offset_handling, | |
6614 | size_t local_symbol_count, | |
6615 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
6616 | { |
6617 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 6618 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
42cacb20 DE |
6619 | |
6620 | if (sh_type == elfcpp::SHT_REL) | |
6621 | { | |
6622 | gold_error(_("%s: unsupported REL reloc section"), | |
6623 | object->name().c_str()); | |
6624 | return; | |
6625 | } | |
6626 | ||
2ea97941 | 6627 | gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>( |
42cacb20 DE |
6628 | symtab, |
6629 | layout, | |
6630 | this, | |
6631 | object, | |
6632 | data_shndx, | |
6633 | prelocs, | |
6634 | reloc_count, | |
6635 | output_section, | |
6636 | needs_special_offset_handling, | |
6637 | local_symbol_count, | |
6638 | plocal_symbols); | |
6639 | } | |
6640 | ||
ec4dbad3 AM |
6641 | // Functor class for processing the global symbol table. |
6642 | // Removes symbols defined on discarded opd entries. | |
6643 | ||
6644 | template<bool big_endian> | |
6645 | class Global_symbol_visitor_opd | |
6646 | { | |
6647 | public: | |
6648 | Global_symbol_visitor_opd() | |
6649 | { } | |
6650 | ||
6651 | void | |
6652 | operator()(Sized_symbol<64>* sym) | |
6653 | { | |
6654 | if (sym->has_symtab_index() | |
6655 | || sym->source() != Symbol::FROM_OBJECT | |
6656 | || !sym->in_real_elf()) | |
6657 | return; | |
6658 | ||
6c77229c AM |
6659 | if (sym->object()->is_dynamic()) |
6660 | return; | |
6661 | ||
ec4dbad3 AM |
6662 | Powerpc_relobj<64, big_endian>* symobj |
6663 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 6664 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
6665 | return; |
6666 | ||
6667 | bool is_ordinary; | |
6668 | unsigned int shndx = sym->shndx(&is_ordinary); | |
6669 | if (shndx == symobj->opd_shndx() | |
6670 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
6671 | { |
6672 | sym->set_undefined(); | |
e3ee8ed4 | 6673 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
6674 | sym->set_is_defined_in_discarded_section(); |
6675 | sym->set_symtab_index(-1U); | |
6676 | } | |
ec4dbad3 AM |
6677 | } |
6678 | }; | |
6679 | ||
f3a0ed29 AM |
6680 | template<int size, bool big_endian> |
6681 | void | |
6682 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
6683 | Layout* layout, | |
6684 | Symbol_table* symtab) | |
6685 | { | |
6686 | if (size == 64) | |
6687 | { | |
6688 | Output_data_save_res<64, big_endian>* savres | |
6689 | = new Output_data_save_res<64, big_endian>(symtab); | |
6690 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, | |
6691 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
6692 | savres, ORDER_TEXT, false); | |
6693 | } | |
6694 | } | |
6695 | ||
d8f5a274 AM |
6696 | // Sort linker created .got section first (for the header), then input |
6697 | // sections belonging to files using small model code. | |
6698 | ||
6699 | template<bool big_endian> | |
6700 | class Sort_toc_sections | |
6701 | { | |
6702 | public: | |
6703 | bool | |
6704 | operator()(const Output_section::Input_section& is1, | |
6705 | const Output_section::Input_section& is2) const | |
6706 | { | |
6707 | if (!is1.is_input_section() && is2.is_input_section()) | |
6708 | return true; | |
6709 | bool small1 | |
6710 | = (is1.is_input_section() | |
6711 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
6712 | ->has_small_toc_reloc())); | |
6713 | bool small2 | |
6714 | = (is2.is_input_section() | |
6715 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
6716 | ->has_small_toc_reloc())); | |
6717 | return small1 && !small2; | |
6718 | } | |
6719 | }; | |
6720 | ||
42cacb20 DE |
6721 | // Finalize the sections. |
6722 | ||
6723 | template<int size, bool big_endian> | |
6724 | void | |
d5b40221 DK |
6725 | Target_powerpc<size, big_endian>::do_finalize_sections( |
6726 | Layout* layout, | |
f59f41f3 | 6727 | const Input_objects*, |
ec4dbad3 | 6728 | Symbol_table* symtab) |
42cacb20 | 6729 | { |
c9824451 AM |
6730 | if (parameters->doing_static_link()) |
6731 | { | |
6732 | // At least some versions of glibc elf-init.o have a strong | |
6733 | // reference to __rela_iplt marker syms. A weak ref would be | |
6734 | // better.. | |
6735 | if (this->iplt_ != NULL) | |
6736 | { | |
6737 | Reloc_section* rel = this->iplt_->rel_plt(); | |
6738 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
6739 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6740 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6741 | elfcpp::STV_HIDDEN, 0, false, true); | |
6742 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
6743 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6744 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6745 | elfcpp::STV_HIDDEN, 0, true, true); | |
6746 | } | |
6747 | else | |
6748 | { | |
6749 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
6750 | Symbol_table::PREDEFINED, 0, 0, | |
6751 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6752 | elfcpp::STV_HIDDEN, 0, true, false); | |
6753 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
6754 | Symbol_table::PREDEFINED, 0, 0, | |
6755 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6756 | elfcpp::STV_HIDDEN, 0, true, false); | |
6757 | } | |
6758 | } | |
6759 | ||
ec4dbad3 AM |
6760 | if (size == 64) |
6761 | { | |
6762 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
6763 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
6764 | |
6765 | if (!parameters->options().relocatable()) | |
6766 | { | |
6767 | this->define_save_restore_funcs(layout, symtab); | |
6768 | ||
6769 | // Annoyingly, we need to make these sections now whether or | |
6770 | // not we need them. If we delay until do_relax then we | |
6771 | // need to mess with the relaxation machinery checkpointing. | |
6772 | this->got_section(symtab, layout); | |
6773 | this->make_brlt_section(layout); | |
d8f5a274 AM |
6774 | |
6775 | if (parameters->options().toc_sort()) | |
6776 | { | |
6777 | Output_section* os = this->got_->output_section(); | |
6778 | if (os != NULL && os->input_sections().size() > 1) | |
6779 | std::stable_sort(os->input_sections().begin(), | |
6780 | os->input_sections().end(), | |
6781 | Sort_toc_sections<big_endian>()); | |
6782 | } | |
ec661b9d | 6783 | } |
ec4dbad3 AM |
6784 | } |
6785 | ||
42cacb20 | 6786 | // Fill in some more dynamic tags. |
c9269dff | 6787 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 6788 | if (odyn != NULL) |
cf43a2fe | 6789 | { |
c9824451 AM |
6790 | const Reloc_section* rel_plt = (this->plt_ == NULL |
6791 | ? NULL | |
6792 | : this->plt_->rel_plt()); | |
6793 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
6794 | this->rela_dyn_, true, size == 32); | |
6795 | ||
6796 | if (size == 32) | |
dd93cd0a | 6797 | { |
c9824451 AM |
6798 | if (this->got_ != NULL) |
6799 | { | |
6800 | this->got_->finalize_data_size(); | |
6801 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
6802 | this->got_, this->got_->g_o_t()); | |
6803 | } | |
dd93cd0a | 6804 | } |
c9824451 | 6805 | else |
dd93cd0a | 6806 | { |
c9824451 AM |
6807 | if (this->glink_ != NULL) |
6808 | { | |
6809 | this->glink_->finalize_data_size(); | |
6810 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
6811 | this->glink_, | |
ec661b9d | 6812 | (this->glink_->pltresolve_size |
c9824451 AM |
6813 | - 32)); |
6814 | } | |
dd93cd0a | 6815 | } |
c9269dff | 6816 | } |
cf43a2fe | 6817 | |
42cacb20 DE |
6818 | // Emit any relocs we saved in an attempt to avoid generating COPY |
6819 | // relocs. | |
6820 | if (this->copy_relocs_.any_saved_relocs()) | |
6821 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
6822 | } | |
6823 | ||
aba6bc71 AM |
6824 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6825 | // reloc. | |
6826 | ||
6827 | static bool | |
6828 | ok_lo_toc_insn(uint32_t insn) | |
6829 | { | |
6830 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6831 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6832 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6833 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6834 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6835 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6836 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6837 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6838 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6839 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6840 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6841 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6842 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6843 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6844 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
6845 | && (insn & 3) != 1) | |
6846 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
6847 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
6848 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
6849 | } | |
6850 | ||
3ea0a085 AM |
6851 | // Return the value to use for a branch relocation. |
6852 | ||
6853 | template<int size, bool big_endian> | |
1611bc4a | 6854 | bool |
3ea0a085 | 6855 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 6856 | const Symbol_table* symtab, |
3ea0a085 AM |
6857 | const Sized_symbol<size>* gsym, |
6858 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 6859 | Address *value, |
3ea0a085 AM |
6860 | unsigned int *dest_shndx) |
6861 | { | |
9055360d AM |
6862 | if (size == 32 || this->abiversion() >= 2) |
6863 | gold_unreachable(); | |
3ea0a085 | 6864 | *dest_shndx = 0; |
3ea0a085 AM |
6865 | |
6866 | // If the symbol is defined in an opd section, ie. is a function | |
6867 | // descriptor, use the function descriptor code entry address | |
6868 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 AM |
6869 | if (gsym != NULL |
6870 | && gsym->source() != Symbol::FROM_OBJECT) | |
1611bc4a | 6871 | return true; |
3ea0a085 AM |
6872 | if (gsym != NULL) |
6873 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
6874 | unsigned int shndx = symobj->opd_shndx(); | |
6875 | if (shndx == 0) | |
1611bc4a | 6876 | return true; |
3ea0a085 | 6877 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 6878 | if (opd_addr == invalid_address) |
1611bc4a | 6879 | return true; |
c6905c28 | 6880 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 6881 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
6882 | { |
6883 | Address sec_off; | |
1611bc4a | 6884 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
6885 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
6886 | { | |
6887 | Section_id folded | |
6888 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
6889 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
6890 | *dest_shndx = folded.second; | |
6891 | } | |
3ea0a085 | 6892 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
6893 | if (sec_addr == invalid_address) |
6894 | return false; | |
6895 | ||
3ea0a085 | 6896 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 6897 | *value = sec_addr + sec_off; |
3ea0a085 | 6898 | } |
1611bc4a | 6899 | return true; |
3ea0a085 AM |
6900 | } |
6901 | ||
42cacb20 DE |
6902 | // Perform a relocation. |
6903 | ||
6904 | template<int size, bool big_endian> | |
6905 | inline bool | |
6906 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 AM |
6907 | const Relocate_info<size, big_endian>* relinfo, |
6908 | Target_powerpc* target, | |
6909 | Output_section* os, | |
6910 | size_t relnum, | |
6911 | const elfcpp::Rela<size, big_endian>& rela, | |
6912 | unsigned int r_type, | |
6913 | const Sized_symbol<size>* gsym, | |
6914 | const Symbol_value<size>* psymval, | |
6915 | unsigned char* view, | |
c9269dff AM |
6916 | Address address, |
6917 | section_size_type view_size) | |
42cacb20 | 6918 | { |
0e804863 ILT |
6919 | if (view == NULL) |
6920 | return true; | |
6921 | ||
e3deeb9c | 6922 | switch (this->maybe_skip_tls_get_addr_call(r_type, gsym)) |
dd93cd0a | 6923 | { |
e3deeb9c AM |
6924 | case Track_tls::NOT_EXPECTED: |
6925 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
6926 | _("__tls_get_addr call lacks marker reloc")); | |
6927 | break; | |
6928 | case Track_tls::EXPECTED: | |
6929 | // We have already complained. | |
6930 | break; | |
6931 | case Track_tls::SKIP: | |
6932 | return true; | |
6933 | case Track_tls::NORMAL: | |
6934 | break; | |
dd93cd0a | 6935 | } |
dd93cd0a | 6936 | |
42cacb20 | 6937 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 6938 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
3ea0a085 AM |
6939 | Powerpc_relobj<size, big_endian>* const object |
6940 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 6941 | Address value = 0; |
0cfb0717 | 6942 | bool has_stub_value = false; |
e5d5f5ed | 6943 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
b3ccdeb5 | 6944 | if ((gsym != NULL |
88b8e639 | 6945 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
b3ccdeb5 AM |
6946 | : object->local_has_plt_offset(r_sym)) |
6947 | && (!psymval->is_ifunc_symbol() | |
9055360d | 6948 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 6949 | { |
9055360d AM |
6950 | if (size == 64 |
6951 | && gsym != NULL | |
6952 | && target->abiversion() >= 2 | |
6953 | && !parameters->options().output_is_position_independent() | |
6954 | && !is_branch_reloc(r_type)) | |
ec661b9d | 6955 | { |
faa2211d AM |
6956 | Address off = target->glink_section()->find_global_entry(gsym); |
6957 | if (off != invalid_address) | |
6ec65f28 AM |
6958 | { |
6959 | value = target->glink_section()->global_entry_address() + off; | |
6960 | has_stub_value = true; | |
6961 | } | |
ec661b9d | 6962 | } |
c9824451 | 6963 | else |
9055360d AM |
6964 | { |
6965 | Stub_table<size, big_endian>* stub_table | |
6966 | = object->stub_table(relinfo->data_shndx); | |
6967 | if (stub_table == NULL) | |
6968 | { | |
6969 | // This is a ref from a data section to an ifunc symbol. | |
6970 | if (target->stub_tables().size() != 0) | |
6971 | stub_table = target->stub_tables()[0]; | |
6972 | } | |
faa2211d AM |
6973 | if (stub_table != NULL) |
6974 | { | |
6975 | Address off; | |
6976 | if (gsym != NULL) | |
6977 | off = stub_table->find_plt_call_entry(object, gsym, r_type, | |
6978 | rela.get_r_addend()); | |
6979 | else | |
6980 | off = stub_table->find_plt_call_entry(object, r_sym, r_type, | |
6981 | rela.get_r_addend()); | |
6982 | if (off != invalid_address) | |
6983 | { | |
6984 | value = stub_table->stub_address() + off; | |
6985 | has_stub_value = true; | |
6986 | } | |
6987 | } | |
9055360d | 6988 | } |
faa2211d AM |
6989 | // We don't care too much about bogus debug references to |
6990 | // non-local functions, but otherwise there had better be a plt | |
6991 | // call stub or global entry stub as appropriate. | |
6992 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 6993 | } |
cf43a2fe AM |
6994 | |
6995 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
6996 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
6997 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
6998 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
6999 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
7000 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 7001 | { |
cf43a2fe AM |
7002 | if (gsym != NULL) |
7003 | { | |
7004 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
7005 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
7006 | } | |
7007 | else | |
7008 | { | |
7009 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7010 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
7011 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
7012 | } | |
dd93cd0a | 7013 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
7014 | } |
7015 | else if (r_type == elfcpp::R_PPC64_TOC) | |
7016 | { | |
c9269dff | 7017 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 7018 | + object->toc_base_offset()); |
cf43a2fe AM |
7019 | } |
7020 | else if (gsym != NULL | |
7021 | && (r_type == elfcpp::R_POWERPC_REL24 | |
7022 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 7023 | && has_stub_value) |
cf43a2fe | 7024 | { |
c9269dff AM |
7025 | if (size == 64) |
7026 | { | |
7027 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
7028 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
7029 | bool can_plt_call = false; | |
7030 | if (rela.get_r_offset() + 8 <= view_size) | |
7031 | { | |
3ea0a085 | 7032 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 7033 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
7034 | if ((insn & 1) != 0 |
7035 | && (insn2 == nop | |
7036 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 7037 | { |
b4f7960d AM |
7038 | elfcpp::Swap<32, big_endian>:: |
7039 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
7040 | can_plt_call = true; |
7041 | } | |
7042 | } | |
7043 | if (!can_plt_call) | |
3ea0a085 AM |
7044 | { |
7045 | // If we don't have a branch and link followed by a nop, | |
7046 | // we can't go via the plt because there is no place to | |
7047 | // put a toc restoring instruction. | |
7048 | // Unless we know we won't be returning. | |
7049 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
7050 | can_plt_call = true; | |
7051 | } | |
7052 | if (!can_plt_call) | |
7053 | { | |
ba8ca3e7 AM |
7054 | // g++ as of 20130507 emits self-calls without a |
7055 | // following nop. This is arguably wrong since we have | |
7056 | // conflicting information. On the one hand a global | |
7057 | // symbol and on the other a local call sequence, but | |
7058 | // don't error for this special case. | |
7059 | // It isn't possible to cheaply verify we have exactly | |
7060 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 7061 | bool ok = false; |
c9824451 | 7062 | Address code = value; |
3ea0a085 AM |
7063 | if (gsym->source() == Symbol::FROM_OBJECT |
7064 | && gsym->object() == object) | |
7065 | { | |
9055360d AM |
7066 | unsigned int dest_shndx = 0; |
7067 | if (target->abiversion() < 2) | |
7068 | { | |
7069 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
7070 | code = psymval->value(object, addend); |
7071 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7072 | &code, &dest_shndx); | |
9055360d | 7073 | } |
3ea0a085 AM |
7074 | bool is_ordinary; |
7075 | if (dest_shndx == 0) | |
7076 | dest_shndx = gsym->shndx(&is_ordinary); | |
7077 | ok = dest_shndx == relinfo->data_shndx; | |
7078 | } | |
7079 | if (!ok) | |
c9824451 AM |
7080 | { |
7081 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7082 | _("call lacks nop, can't restore toc; " | |
7083 | "recompile with -fPIC")); | |
7084 | value = code; | |
7085 | } | |
3ea0a085 | 7086 | } |
c9269dff | 7087 | } |
cf43a2fe | 7088 | } |
dd93cd0a AM |
7089 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
7090 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
7091 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
7092 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
7093 | { | |
7094 | // First instruction of a global dynamic sequence, arg setup insn. | |
7095 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7096 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7097 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
7098 | if (tls_type == tls::TLSOPT_NONE) | |
7099 | got_type = GOT_TYPE_TLSGD; | |
7100 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7101 | got_type = GOT_TYPE_TPREL; | |
7102 | if (got_type != GOT_TYPE_STANDARD) | |
7103 | { | |
7104 | if (gsym != NULL) | |
7105 | { | |
7106 | gold_assert(gsym->has_got_offset(got_type)); | |
7107 | value = gsym->got_offset(got_type); | |
7108 | } | |
7109 | else | |
7110 | { | |
7111 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7112 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
7113 | value = object->local_got_offset(r_sym, got_type); | |
7114 | } | |
7115 | value -= target->got_section()->got_base_offset(object); | |
7116 | } | |
7117 | if (tls_type == tls::TLSOPT_TO_IE) | |
7118 | { | |
7119 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7120 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7121 | { | |
7122 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7123 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7124 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
7125 | if (size == 32) | |
7126 | insn |= 32 << 26; // lwz | |
7127 | else | |
7128 | insn |= 58 << 26; // ld | |
7129 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7130 | } | |
7131 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
7132 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
7133 | } | |
7134 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7135 | { | |
7136 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7137 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7138 | { | |
7139 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
0f81d3f0 AM |
7140 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7141 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7142 | if (size == 32) |
0f81d3f0 AM |
7143 | insn |= addis_0_2; |
7144 | else | |
7145 | insn |= addis_0_13; | |
dd93cd0a AM |
7146 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7147 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7148 | value = psymval->value(object, rela.get_r_addend()); | |
7149 | } | |
7150 | else | |
7151 | { | |
7152 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7153 | Insn insn = nop; | |
7154 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7155 | r_type = elfcpp::R_POWERPC_NONE; | |
7156 | } | |
7157 | } | |
7158 | } | |
7159 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7160 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
7161 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
7162 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
7163 | { | |
7164 | // First instruction of a local dynamic sequence, arg setup insn. | |
7165 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7166 | if (tls_type == tls::TLSOPT_NONE) | |
7167 | { | |
7168 | value = target->tlsld_got_offset(); | |
7169 | value -= target->got_section()->got_base_offset(object); | |
7170 | } | |
7171 | else | |
7172 | { | |
7173 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7174 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7175 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
7176 | { | |
7177 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
0f81d3f0 AM |
7178 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7179 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7180 | if (size == 32) |
0f81d3f0 AM |
7181 | insn |= addis_0_2; |
7182 | else | |
7183 | insn |= addis_0_13; | |
dd93cd0a AM |
7184 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7185 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 7186 | value = dtp_offset; |
dd93cd0a AM |
7187 | } |
7188 | else | |
7189 | { | |
7190 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7191 | Insn insn = nop; | |
7192 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7193 | r_type = elfcpp::R_POWERPC_NONE; | |
7194 | } | |
7195 | } | |
7196 | } | |
7197 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
7198 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
7199 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
7200 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
7201 | { | |
7202 | // Accesses relative to a local dynamic sequence address, | |
7203 | // no optimisation here. | |
7204 | if (gsym != NULL) | |
7205 | { | |
7206 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
7207 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
7208 | } | |
7209 | else | |
7210 | { | |
7211 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7212 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); | |
7213 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
7214 | } | |
7215 | value -= target->got_section()->got_base_offset(object); | |
7216 | } | |
7217 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7218 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
7219 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
7220 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
7221 | { | |
7222 | // First instruction of initial exec sequence. | |
7223 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7224 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7225 | if (tls_type == tls::TLSOPT_NONE) | |
7226 | { | |
7227 | if (gsym != NULL) | |
7228 | { | |
7229 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
7230 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
7231 | } | |
7232 | else | |
7233 | { | |
7234 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7235 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); | |
7236 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
7237 | } | |
7238 | value -= target->got_section()->got_base_offset(object); | |
7239 | } | |
7240 | else | |
7241 | { | |
7242 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7243 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7244 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
7245 | { | |
7246 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7247 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7248 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
7249 | if (size == 32) | |
7250 | insn |= addis_0_2; | |
7251 | else | |
7252 | insn |= addis_0_13; | |
7253 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7254 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7255 | value = psymval->value(object, rela.get_r_addend()); | |
7256 | } | |
7257 | else | |
7258 | { | |
7259 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7260 | Insn insn = nop; | |
7261 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7262 | r_type = elfcpp::R_POWERPC_NONE; | |
7263 | } | |
7264 | } | |
7265 | } | |
7266 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7267 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7268 | { | |
7269 | // Second instruction of a global dynamic sequence, | |
7270 | // the __tls_get_addr call | |
e3deeb9c | 7271 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7272 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
7273 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7274 | if (tls_type != tls::TLSOPT_NONE) | |
7275 | { | |
7276 | if (tls_type == tls::TLSOPT_TO_IE) | |
7277 | { | |
7278 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7279 | Insn insn = add_3_3_13; | |
7280 | if (size == 32) | |
7281 | insn = add_3_3_2; | |
7282 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7283 | r_type = elfcpp::R_POWERPC_NONE; | |
7284 | } | |
7285 | else | |
7286 | { | |
7287 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7288 | Insn insn = addi_3_3; | |
7289 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7290 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
7291 | view += 2 * big_endian; | |
7292 | value = psymval->value(object, rela.get_r_addend()); | |
7293 | } | |
e3deeb9c | 7294 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
7295 | } |
7296 | } | |
7297 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7298 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7299 | { | |
7300 | // Second instruction of a local dynamic sequence, | |
7301 | // the __tls_get_addr call | |
e3deeb9c | 7302 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7303 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
7304 | if (tls_type == tls::TLSOPT_TO_LE) | |
7305 | { | |
7306 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7307 | Insn insn = addi_3_3; | |
7308 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 7309 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
7310 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
7311 | view += 2 * big_endian; | |
7404fe1b | 7312 | value = dtp_offset; |
dd93cd0a AM |
7313 | } |
7314 | } | |
7315 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
7316 | { | |
7317 | // Second instruction of an initial exec sequence | |
7318 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7319 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7320 | if (tls_type == tls::TLSOPT_TO_LE) | |
7321 | { | |
7322 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7323 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7324 | unsigned int reg = size == 32 ? 2 : 13; | |
7325 | insn = at_tls_transform(insn, reg); | |
7326 | gold_assert(insn != 0); | |
7327 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7328 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
7329 | view += 2 * big_endian; | |
7330 | value = psymval->value(object, rela.get_r_addend()); | |
7331 | } | |
7332 | } | |
0cfb0717 | 7333 | else if (!has_stub_value) |
cf43a2fe | 7334 | { |
dd93cd0a | 7335 | Address addend = 0; |
cbcb23fa | 7336 | if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) |
cf43a2fe | 7337 | addend = rela.get_r_addend(); |
c9824451 | 7338 | value = psymval->value(object, addend); |
dd93cd0a | 7339 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
7340 | { |
7341 | if (target->abiversion() >= 2) | |
7342 | { | |
7343 | if (gsym != NULL) | |
7344 | value += object->ppc64_local_entry_offset(gsym); | |
7345 | else | |
7346 | value += object->ppc64_local_entry_offset(r_sym); | |
7347 | } | |
7348 | else | |
1611bc4a AM |
7349 | { |
7350 | unsigned int dest_shndx; | |
7351 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7352 | &value, &dest_shndx); | |
7353 | } | |
9055360d | 7354 | } |
cbcb23fa | 7355 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
7356 | if (max_branch_offset != 0 |
7357 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
7358 | { | |
7359 | Stub_table<size, big_endian>* stub_table | |
7360 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
7361 | if (stub_table != NULL) |
7362 | { | |
7363 | Address off = stub_table->find_long_branch_entry(object, value); | |
7364 | if (off != invalid_address) | |
0cfb0717 AM |
7365 | { |
7366 | value = (stub_table->stub_address() + stub_table->plt_size() | |
7367 | + off); | |
7368 | has_stub_value = true; | |
7369 | } | |
0cfdc767 | 7370 | } |
ec661b9d | 7371 | } |
42cacb20 DE |
7372 | } |
7373 | ||
42cacb20 DE |
7374 | switch (r_type) |
7375 | { | |
dd93cd0a AM |
7376 | case elfcpp::R_PPC64_REL64: |
7377 | case elfcpp::R_POWERPC_REL32: | |
7378 | case elfcpp::R_POWERPC_REL24: | |
7379 | case elfcpp::R_PPC_PLTREL24: | |
7380 | case elfcpp::R_PPC_LOCAL24PC: | |
7381 | case elfcpp::R_POWERPC_REL16: | |
7382 | case elfcpp::R_POWERPC_REL16_LO: | |
7383 | case elfcpp::R_POWERPC_REL16_HI: | |
7384 | case elfcpp::R_POWERPC_REL16_HA: | |
7385 | case elfcpp::R_POWERPC_REL14: | |
7386 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7387 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7388 | value -= address; | |
7389 | break; | |
7390 | ||
42cacb20 DE |
7391 | case elfcpp::R_PPC64_TOC16: |
7392 | case elfcpp::R_PPC64_TOC16_LO: | |
7393 | case elfcpp::R_PPC64_TOC16_HI: | |
7394 | case elfcpp::R_PPC64_TOC16_HA: | |
7395 | case elfcpp::R_PPC64_TOC16_DS: | |
7396 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 7397 | // Subtract the TOC base address. |
c9269dff | 7398 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 7399 | + object->toc_base_offset()); |
42cacb20 DE |
7400 | break; |
7401 | ||
cf43a2fe AM |
7402 | case elfcpp::R_POWERPC_SECTOFF: |
7403 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
7404 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7405 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7406 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7407 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7408 | if (os != NULL) | |
7409 | value -= os->address(); | |
42cacb20 DE |
7410 | break; |
7411 | ||
dd93cd0a AM |
7412 | case elfcpp::R_PPC64_TPREL16_DS: |
7413 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7414 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7415 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7416 | if (size != 64) |
f9c6b907 | 7417 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a AM |
7418 | break; |
7419 | case elfcpp::R_POWERPC_TPREL16: | |
7420 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7421 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7422 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7423 | case elfcpp::R_POWERPC_TPREL: | |
7424 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
7425 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7426 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7427 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
7428 | // tls symbol values are relative to tls_segment()->vaddr() | |
7429 | value -= tp_offset; | |
7430 | break; | |
7431 | ||
7432 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7433 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
7434 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7435 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7436 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7437 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
7438 | if (size != 64) | |
7439 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
7440 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
7441 | break; | |
7442 | case elfcpp::R_POWERPC_DTPREL16: | |
7443 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7444 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7445 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7446 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
7447 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7448 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
7449 | // tls symbol values are relative to tls_segment()->vaddr() |
7450 | value -= dtp_offset; | |
7451 | break; | |
7452 | ||
45965137 AM |
7453 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
7454 | if (gsym != NULL) | |
7455 | value += object->ppc64_local_entry_offset(gsym); | |
7456 | else | |
7457 | value += object->ppc64_local_entry_offset(r_sym); | |
7458 | break; | |
7459 | ||
42cacb20 DE |
7460 | default: |
7461 | break; | |
7462 | } | |
7463 | ||
dd93cd0a | 7464 | Insn branch_bit = 0; |
42cacb20 DE |
7465 | switch (r_type) |
7466 | { | |
dd93cd0a AM |
7467 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
7468 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7469 | branch_bit = 1 << 21; | |
7470 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7471 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7472 | { | |
7473 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7474 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7475 | insn &= ~(1 << 21); | |
7476 | insn |= branch_bit; | |
7477 | if (this->is_isa_v2) | |
7478 | { | |
7479 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
7480 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
7481 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
7482 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
7483 | insn |= 0x02 << 21; | |
7484 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
7485 | insn |= 0x08 << 21; | |
7486 | else | |
7487 | break; | |
7488 | } | |
7489 | else | |
7490 | { | |
7491 | // Invert 'y' bit if not the default. | |
7492 | if (static_cast<Signed_address>(value) < 0) | |
7493 | insn ^= 1 << 21; | |
7494 | } | |
7495 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7496 | } | |
7497 | break; | |
7498 | ||
7499 | default: | |
7500 | break; | |
7501 | } | |
7502 | ||
aba6bc71 AM |
7503 | if (size == 64) |
7504 | { | |
7505 | // Multi-instruction sequences that access the TOC can be | |
7506 | // optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
7507 | // to nop; addi rb,r2,x; | |
7508 | switch (r_type) | |
7509 | { | |
7510 | default: | |
7511 | break; | |
7512 | ||
7513 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7514 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7515 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7516 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7517 | case elfcpp::R_POWERPC_GOT16_HA: | |
7518 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 7519 | if (parameters->options().toc_optimize()) |
aba6bc71 AM |
7520 | { |
7521 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7522 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7523 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7524 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
7525 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7526 | _("toc optimization is not supported " | |
7527 | "for %#08x instruction"), insn); | |
7528 | else if (value + 0x8000 < 0x10000) | |
7529 | { | |
7530 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
7531 | return true; | |
7532 | } | |
7533 | } | |
7534 | break; | |
7535 | ||
7536 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7537 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7538 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7539 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7540 | case elfcpp::R_POWERPC_GOT16_LO: | |
7541 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7542 | case elfcpp::R_PPC64_TOC16_LO: | |
7543 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 7544 | if (parameters->options().toc_optimize()) |
aba6bc71 AM |
7545 | { |
7546 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7547 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7548 | if (!ok_lo_toc_insn(insn)) | |
7549 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7550 | _("toc optimization is not supported " | |
7551 | "for %#08x instruction"), insn); | |
7552 | else if (value + 0x8000 < 0x10000) | |
7553 | { | |
7554 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
7555 | { | |
7556 | // Transform addic to addi when we change reg. | |
7557 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
7558 | insn |= (14u << 26) | (2 << 16); | |
7559 | } | |
7560 | else | |
7561 | { | |
7562 | insn &= ~(0x1f << 16); | |
7563 | insn |= 2 << 16; | |
7564 | } | |
7565 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7566 | } | |
7567 | } | |
7568 | break; | |
7569 | } | |
7570 | } | |
7571 | ||
f4baf0d4 | 7572 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 7573 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
7574 | switch (r_type) |
7575 | { | |
7576 | case elfcpp::R_POWERPC_ADDR32: | |
7577 | case elfcpp::R_POWERPC_UADDR32: | |
7578 | if (size == 64) | |
f4baf0d4 | 7579 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7580 | break; |
7581 | ||
7582 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 7583 | if (size == 64) |
f4baf0d4 | 7584 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
7585 | break; |
7586 | ||
dd93cd0a | 7587 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 7588 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7589 | break; |
7590 | ||
b80eed39 AM |
7591 | case elfcpp::R_POWERPC_ADDR16: |
7592 | // We really should have three separate relocations, | |
7593 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
7594 | // and one for insns with 16-bit unsigned fields. | |
7595 | overflow = Reloc::CHECK_BITFIELD; | |
7596 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
7597 | overflow = Reloc::CHECK_LOW_INSN; | |
7598 | break; | |
7599 | ||
f9c6b907 AM |
7600 | case elfcpp::R_POWERPC_ADDR16_HI: |
7601 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7602 | case elfcpp::R_POWERPC_GOT16_HI: | |
7603 | case elfcpp::R_POWERPC_GOT16_HA: | |
7604 | case elfcpp::R_POWERPC_PLT16_HI: | |
7605 | case elfcpp::R_POWERPC_PLT16_HA: | |
7606 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7607 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7608 | case elfcpp::R_PPC64_TOC16_HI: | |
7609 | case elfcpp::R_PPC64_TOC16_HA: | |
7610 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
7611 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
7612 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7613 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7614 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7615 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7616 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7617 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7618 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7619 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7620 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7621 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7622 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7623 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7624 | case elfcpp::R_POWERPC_REL16_HI: | |
7625 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
7626 | if (size != 32) |
7627 | overflow = Reloc::CHECK_HIGH_INSN; | |
7628 | break; | |
7629 | ||
dd93cd0a AM |
7630 | case elfcpp::R_POWERPC_REL16: |
7631 | case elfcpp::R_PPC64_TOC16: | |
7632 | case elfcpp::R_POWERPC_GOT16: | |
7633 | case elfcpp::R_POWERPC_SECTOFF: | |
7634 | case elfcpp::R_POWERPC_TPREL16: | |
7635 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
7636 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7637 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7638 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7639 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7640 | overflow = Reloc::CHECK_LOW_INSN; | |
7641 | break; | |
7642 | ||
7643 | case elfcpp::R_POWERPC_ADDR24: | |
7644 | case elfcpp::R_POWERPC_ADDR14: | |
7645 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7646 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7647 | case elfcpp::R_PPC64_ADDR16_DS: | |
7648 | case elfcpp::R_POWERPC_REL24: | |
7649 | case elfcpp::R_PPC_PLTREL24: | |
7650 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
7651 | case elfcpp::R_PPC64_TPREL16_DS: |
7652 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7653 | case elfcpp::R_PPC64_TOC16_DS: | |
7654 | case elfcpp::R_PPC64_GOT16_DS: | |
7655 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7656 | case elfcpp::R_POWERPC_REL14: | |
7657 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7658 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 7659 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 7660 | break; |
dd93cd0a | 7661 | } |
42cacb20 | 7662 | |
b80eed39 AM |
7663 | if (overflow == Reloc::CHECK_LOW_INSN |
7664 | || overflow == Reloc::CHECK_HIGH_INSN) | |
7665 | { | |
7666 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7667 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7668 | ||
a47622ac AM |
7669 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
7670 | overflow = Reloc::CHECK_BITFIELD; | |
7671 | else if (overflow == Reloc::CHECK_LOW_INSN | |
7672 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
7673 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
7674 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
7675 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
7676 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
7677 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 7678 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
7679 | else |
7680 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
7681 | } |
7682 | ||
3ea0a085 | 7683 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 7684 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
7685 | switch (r_type) |
7686 | { | |
7687 | case elfcpp::R_POWERPC_NONE: | |
7688 | case elfcpp::R_POWERPC_TLS: | |
7689 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7690 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
42cacb20 DE |
7691 | break; |
7692 | ||
7693 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 7694 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 7695 | case elfcpp::R_PPC64_TOC: |
45965137 | 7696 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
7697 | Reloc::addr64(view, value); |
7698 | break; | |
7699 | ||
7700 | case elfcpp::R_POWERPC_TPREL: | |
7701 | case elfcpp::R_POWERPC_DTPREL: | |
7702 | if (size == 64) | |
7703 | Reloc::addr64(view, value); | |
7704 | else | |
3ea0a085 | 7705 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7706 | break; |
7707 | ||
7708 | case elfcpp::R_PPC64_UADDR64: | |
7709 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
7710 | break; |
7711 | ||
7712 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 7713 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7714 | break; |
7715 | ||
acc276d8 | 7716 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 7717 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 7718 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
7719 | break; |
7720 | ||
7721 | case elfcpp::R_POWERPC_ADDR24: | |
7722 | case elfcpp::R_POWERPC_REL24: | |
7723 | case elfcpp::R_PPC_PLTREL24: | |
7724 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 7725 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
7726 | break; |
7727 | ||
dd93cd0a AM |
7728 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
7729 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
7730 | case elfcpp::R_POWERPC_GOT_TPREL16: |
7731 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
7732 | if (size == 64) |
7733 | { | |
ec86f434 | 7734 | // On ppc64 these are all ds form |
3ea0a085 | 7735 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
7736 | break; |
7737 | } | |
cf43a2fe | 7738 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 7739 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 7740 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 7741 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 7742 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
7743 | case elfcpp::R_POWERPC_TPREL16: |
7744 | case elfcpp::R_POWERPC_DTPREL16: | |
7745 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7746 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 7747 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 7748 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 7749 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 7750 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 7751 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
7752 | case elfcpp::R_POWERPC_TPREL16_LO: |
7753 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7754 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7755 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
3ea0a085 | 7756 | status = Reloc::addr16(view, value, overflow); |
dd93cd0a AM |
7757 | break; |
7758 | ||
7759 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 7760 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
7761 | break; |
7762 | ||
f9c6b907 AM |
7763 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7764 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
7765 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
7766 | if (size == 32) | |
7767 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
7768 | goto unsupp; | |
cf43a2fe | 7769 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 7770 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 7771 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 7772 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 7773 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
7774 | case elfcpp::R_POWERPC_TPREL16_HI: |
7775 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7776 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7777 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7778 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7779 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7780 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
7781 | break; |
7782 | ||
f9c6b907 AM |
7783 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
7784 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
7785 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7786 | if (size == 32) | |
7787 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
7788 | goto unsupp; | |
cf43a2fe | 7789 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 7790 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 7791 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 7792 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 7793 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
7794 | case elfcpp::R_POWERPC_TPREL16_HA: |
7795 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7796 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7797 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7798 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7799 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7800 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
7801 | break; |
7802 | ||
dd93cd0a AM |
7803 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
7804 | if (size == 32) | |
7805 | // R_PPC_EMB_NADDR16_LO | |
7806 | goto unsupp; | |
7807 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
7808 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
7809 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
7810 | break; |
7811 | ||
dd93cd0a AM |
7812 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
7813 | if (size == 32) | |
7814 | // R_PPC_EMB_NADDR16_HI | |
7815 | goto unsupp; | |
7816 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7817 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7818 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
7819 | break; |
7820 | ||
dd93cd0a AM |
7821 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
7822 | if (size == 32) | |
7823 | // R_PPC_EMB_NADDR16_HA | |
7824 | goto unsupp; | |
7825 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7826 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7827 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
7828 | break; |
7829 | ||
dd93cd0a AM |
7830 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
7831 | if (size == 32) | |
7832 | // R_PPC_EMB_SDAI16 | |
7833 | goto unsupp; | |
7834 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7835 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
7836 | Reloc::addr16_ha3(view, value); | |
7837 | break; | |
7838 | ||
7839 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7840 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
7841 | if (size == 32) | |
7842 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
7843 | goto unsupp; | |
7844 | case elfcpp::R_PPC64_TPREL16_DS: | |
7845 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
7846 | if (size == 32) | |
7847 | // R_PPC_TLSGD, R_PPC_TLSLD | |
7848 | break; | |
cf43a2fe AM |
7849 | case elfcpp::R_PPC64_ADDR16_DS: |
7850 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
7851 | case elfcpp::R_PPC64_TOC16_DS: |
7852 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
7853 | case elfcpp::R_PPC64_GOT16_DS: |
7854 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7855 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7856 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3ea0a085 | 7857 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
7858 | break; |
7859 | ||
7860 | case elfcpp::R_POWERPC_ADDR14: | |
7861 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7862 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7863 | case elfcpp::R_POWERPC_REL14: | |
7864 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7865 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 7866 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
7867 | break; |
7868 | ||
7869 | case elfcpp::R_POWERPC_COPY: | |
7870 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7871 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7872 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 7873 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
7874 | case elfcpp::R_PPC64_JMP_IREL: |
7875 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
7876 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
7877 | _("unexpected reloc %u in object file"), | |
7878 | r_type); | |
7879 | break; | |
7880 | ||
dd93cd0a AM |
7881 | case elfcpp::R_PPC_EMB_SDA21: |
7882 | if (size == 32) | |
7883 | goto unsupp; | |
7884 | else | |
7885 | { | |
7886 | // R_PPC64_TOCSAVE. For the time being this can be ignored. | |
7887 | } | |
7888 | break; | |
7889 | ||
7890 | case elfcpp::R_PPC_EMB_SDA2I16: | |
7891 | case elfcpp::R_PPC_EMB_SDA2REL: | |
7892 | if (size == 32) | |
7893 | goto unsupp; | |
7894 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
7895 | break; |
7896 | ||
dd93cd0a AM |
7897 | case elfcpp::R_POWERPC_PLT32: |
7898 | case elfcpp::R_POWERPC_PLTREL32: | |
7899 | case elfcpp::R_POWERPC_PLT16_LO: | |
7900 | case elfcpp::R_POWERPC_PLT16_HI: | |
7901 | case elfcpp::R_POWERPC_PLT16_HA: | |
7902 | case elfcpp::R_PPC_SDAREL16: | |
7903 | case elfcpp::R_POWERPC_ADDR30: | |
7904 | case elfcpp::R_PPC64_PLT64: | |
7905 | case elfcpp::R_PPC64_PLTREL64: | |
7906 | case elfcpp::R_PPC64_PLTGOT16: | |
7907 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
7908 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
7909 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
7910 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
7911 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
7912 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
7913 | case elfcpp::R_PPC_EMB_RELSDA: |
7914 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 7915 | default: |
dd93cd0a | 7916 | unsupp: |
42cacb20 DE |
7917 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
7918 | _("unsupported reloc %u"), | |
7919 | r_type); | |
7920 | break; | |
7921 | } | |
0cfb0717 | 7922 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
7923 | && (has_stub_value |
7924 | || !(gsym != NULL | |
282c9750 | 7925 | && gsym->is_undefined() |
3ffaac20 | 7926 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
7927 | { |
7928 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7929 | _("relocation overflow")); | |
7930 | if (has_stub_value) | |
7931 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
7932 | } | |
42cacb20 DE |
7933 | |
7934 | return true; | |
7935 | } | |
7936 | ||
42cacb20 DE |
7937 | // Relocate section data. |
7938 | ||
7939 | template<int size, bool big_endian> | |
7940 | void | |
7941 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
7942 | const Relocate_info<size, big_endian>* relinfo, |
7943 | unsigned int sh_type, | |
7944 | const unsigned char* prelocs, | |
7945 | size_t reloc_count, | |
7946 | Output_section* output_section, | |
7947 | bool needs_special_offset_handling, | |
7948 | unsigned char* view, | |
c9269dff | 7949 | Address address, |
d83ce4e3 AM |
7950 | section_size_type view_size, |
7951 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
7952 | { |
7953 | typedef Target_powerpc<size, big_endian> Powerpc; | |
7954 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
7955 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
7956 | Powerpc_comdat_behavior; | |
42cacb20 DE |
7957 | |
7958 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
7959 | ||
7960 | gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA, | |
168a4726 | 7961 | Powerpc_relocate, Powerpc_comdat_behavior>( |
42cacb20 DE |
7962 | relinfo, |
7963 | this, | |
7964 | prelocs, | |
7965 | reloc_count, | |
7966 | output_section, | |
7967 | needs_special_offset_handling, | |
7968 | view, | |
7969 | address, | |
364c7fa5 ILT |
7970 | view_size, |
7971 | reloc_symbol_changes); | |
42cacb20 DE |
7972 | } |
7973 | ||
cf43a2fe | 7974 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 7975 | { |
cf43a2fe AM |
7976 | public: |
7977 | // Return the strategy to use for a local symbol which is not a | |
7978 | // section symbol, given the relocation type. | |
7979 | inline Relocatable_relocs::Reloc_strategy | |
7980 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
7981 | { | |
7982 | if (r_type == 0 && r_sym == 0) | |
7983 | return Relocatable_relocs::RELOC_DISCARD; | |
7984 | return Relocatable_relocs::RELOC_COPY; | |
7985 | } | |
7986 | ||
7987 | // Return the strategy to use for a local symbol which is a section | |
7988 | // symbol, given the relocation type. | |
7989 | inline Relocatable_relocs::Reloc_strategy | |
7990 | local_section_strategy(unsigned int, Relobj*) | |
7991 | { | |
7992 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
7993 | } | |
7994 | ||
7995 | // Return the strategy to use for a global symbol, given the | |
7996 | // relocation type, the object, and the symbol index. | |
7997 | inline Relocatable_relocs::Reloc_strategy | |
7998 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
7999 | { | |
8000 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
8001 | return Relocatable_relocs::RELOC_SPECIAL; | |
8002 | return Relocatable_relocs::RELOC_COPY; | |
8003 | } | |
8004 | }; | |
42cacb20 DE |
8005 | |
8006 | // Scan the relocs during a relocatable link. | |
8007 | ||
8008 | template<int size, bool big_endian> | |
8009 | void | |
8010 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
8011 | Symbol_table* symtab, |
8012 | Layout* layout, | |
8013 | Sized_relobj_file<size, big_endian>* object, | |
8014 | unsigned int data_shndx, | |
8015 | unsigned int sh_type, | |
8016 | const unsigned char* prelocs, | |
8017 | size_t reloc_count, | |
8018 | Output_section* output_section, | |
8019 | bool needs_special_offset_handling, | |
8020 | size_t local_symbol_count, | |
8021 | const unsigned char* plocal_symbols, | |
8022 | Relocatable_relocs* rr) | |
42cacb20 DE |
8023 | { |
8024 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8025 | ||
42cacb20 | 8026 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, |
d83ce4e3 | 8027 | Powerpc_scan_relocatable_reloc>( |
42cacb20 DE |
8028 | symtab, |
8029 | layout, | |
8030 | object, | |
8031 | data_shndx, | |
8032 | prelocs, | |
8033 | reloc_count, | |
8034 | output_section, | |
8035 | needs_special_offset_handling, | |
8036 | local_symbol_count, | |
8037 | plocal_symbols, | |
8038 | rr); | |
8039 | } | |
8040 | ||
7404fe1b | 8041 | // Emit relocations for a section. |
dd93cd0a AM |
8042 | // This is a modified version of the function by the same name in |
8043 | // target-reloc.h. Using relocate_special_relocatable for | |
8044 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
8045 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
8046 | |
8047 | template<int size, bool big_endian> | |
8048 | void | |
7404fe1b | 8049 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
8050 | const Relocate_info<size, big_endian>* relinfo, |
8051 | unsigned int sh_type, | |
8052 | const unsigned char* prelocs, | |
8053 | size_t reloc_count, | |
8054 | Output_section* output_section, | |
62fe925a | 8055 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
42cacb20 | 8056 | const Relocatable_relocs* rr, |
cf43a2fe | 8057 | unsigned char*, |
dd93cd0a | 8058 | Address view_address, |
cf43a2fe | 8059 | section_size_type, |
42cacb20 DE |
8060 | unsigned char* reloc_view, |
8061 | section_size_type reloc_view_size) | |
8062 | { | |
8063 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8064 | ||
cf43a2fe AM |
8065 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
8066 | Reltype; | |
8067 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write | |
8068 | Reltype_write; | |
8069 | const int reloc_size | |
8070 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
cf43a2fe AM |
8071 | |
8072 | Powerpc_relobj<size, big_endian>* const object | |
8073 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
8074 | const unsigned int local_count = object->local_symbol_count(); | |
8075 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 8076 | Address got2_addend = 0; |
cf43a2fe | 8077 | if (got2_shndx != 0) |
c9269dff AM |
8078 | { |
8079 | got2_addend = object->get_output_section_offset(got2_shndx); | |
8080 | gold_assert(got2_addend != invalid_address); | |
8081 | } | |
cf43a2fe AM |
8082 | |
8083 | unsigned char* pwrite = reloc_view; | |
7404fe1b | 8084 | bool zap_next = false; |
cf43a2fe AM |
8085 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
8086 | { | |
8087 | Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i); | |
8088 | if (strategy == Relocatable_relocs::RELOC_DISCARD) | |
8089 | continue; | |
8090 | ||
8091 | Reltype reloc(prelocs); | |
8092 | Reltype_write reloc_write(pwrite); | |
8093 | ||
7404fe1b | 8094 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 8095 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
8096 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
8097 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
8098 | const unsigned int orig_r_sym = r_sym; | |
8099 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
8100 | = reloc.get_r_addend(); | |
8101 | const Symbol* gsym = NULL; | |
8102 | ||
8103 | if (zap_next) | |
8104 | { | |
8105 | // We could arrange to discard these and other relocs for | |
8106 | // tls optimised sequences in the strategy methods, but for | |
8107 | // now do as BFD ld does. | |
8108 | r_type = elfcpp::R_POWERPC_NONE; | |
8109 | zap_next = false; | |
8110 | } | |
cf43a2fe AM |
8111 | |
8112 | // Get the new symbol index. | |
cf43a2fe AM |
8113 | if (r_sym < local_count) |
8114 | { | |
8115 | switch (strategy) | |
8116 | { | |
8117 | case Relocatable_relocs::RELOC_COPY: | |
8118 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 8119 | if (r_sym != 0) |
dd93cd0a | 8120 | { |
7404fe1b AM |
8121 | r_sym = object->symtab_index(r_sym); |
8122 | gold_assert(r_sym != -1U); | |
dd93cd0a | 8123 | } |
cf43a2fe AM |
8124 | break; |
8125 | ||
8126 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
8127 | { | |
8128 | // We are adjusting a section symbol. We need to find | |
8129 | // the symbol table index of the section symbol for | |
8130 | // the output section corresponding to input section | |
8131 | // in which this symbol is defined. | |
8132 | gold_assert(r_sym < local_count); | |
8133 | bool is_ordinary; | |
8134 | unsigned int shndx = | |
8135 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
8136 | gold_assert(is_ordinary); | |
8137 | Output_section* os = object->output_section(shndx); | |
8138 | gold_assert(os != NULL); | |
8139 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 8140 | r_sym = os->symtab_index(); |
cf43a2fe AM |
8141 | } |
8142 | break; | |
8143 | ||
8144 | default: | |
8145 | gold_unreachable(); | |
8146 | } | |
8147 | } | |
8148 | else | |
8149 | { | |
7404fe1b | 8150 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
8151 | gold_assert(gsym != NULL); |
8152 | if (gsym->is_forwarder()) | |
8153 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
8154 | ||
8155 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 8156 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
8157 | } |
8158 | ||
8159 | // Get the new offset--the location in the output section where | |
8160 | // this relocation should be applied. | |
cf43a2fe | 8161 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8162 | offset += offset_in_output_section; |
cf43a2fe AM |
8163 | else |
8164 | { | |
c9269dff AM |
8165 | section_offset_type sot_offset = |
8166 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 8167 | section_offset_type new_sot_offset = |
c9269dff AM |
8168 | output_section->output_offset(object, relinfo->data_shndx, |
8169 | sot_offset); | |
cf43a2fe | 8170 | gold_assert(new_sot_offset != -1); |
7404fe1b | 8171 | offset = new_sot_offset; |
cf43a2fe AM |
8172 | } |
8173 | ||
dd93cd0a AM |
8174 | // In an object file, r_offset is an offset within the section. |
8175 | // In an executable or dynamic object, generated by | |
8176 | // --emit-relocs, r_offset is an absolute address. | |
7404fe1b | 8177 | if (!parameters->options().relocatable()) |
dd93cd0a | 8178 | { |
7404fe1b | 8179 | offset += view_address; |
dd93cd0a | 8180 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8181 | offset -= offset_in_output_section; |
dd93cd0a AM |
8182 | } |
8183 | ||
cf43a2fe | 8184 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
8185 | if (strategy == Relocatable_relocs::RELOC_COPY) |
8186 | ; | |
8187 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
8188 | { | |
7404fe1b | 8189 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
cf43a2fe AM |
8190 | addend = psymval->value(object, addend); |
8191 | } | |
8192 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
8193 | { | |
8194 | if (addend >= 32768) | |
8195 | addend += got2_addend; | |
8196 | } | |
8197 | else | |
8198 | gold_unreachable(); | |
8199 | ||
7404fe1b AM |
8200 | if (!parameters->options().relocatable()) |
8201 | { | |
8202 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8203 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8204 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8205 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8206 | { | |
8207 | // First instruction of a global dynamic sequence, | |
8208 | // arg setup insn. | |
8209 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8210 | switch (this->optimize_tls_gd(final)) | |
8211 | { | |
8212 | case tls::TLSOPT_TO_IE: | |
8213 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8214 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8215 | break; | |
8216 | case tls::TLSOPT_TO_LE: | |
8217 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8218 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8219 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8220 | else | |
8221 | { | |
8222 | r_type = elfcpp::R_POWERPC_NONE; | |
8223 | offset -= 2 * big_endian; | |
8224 | } | |
8225 | break; | |
8226 | default: | |
8227 | break; | |
8228 | } | |
8229 | } | |
8230 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8231 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8232 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8233 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8234 | { | |
8235 | // First instruction of a local dynamic sequence, | |
8236 | // arg setup insn. | |
8237 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8238 | { | |
8239 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8240 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8241 | { | |
8242 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8243 | const Output_section* os = relinfo->layout->tls_segment() | |
8244 | ->first_section(); | |
8245 | gold_assert(os != NULL); | |
8246 | gold_assert(os->needs_symtab_index()); | |
8247 | r_sym = os->symtab_index(); | |
8248 | addend = dtp_offset; | |
8249 | } | |
8250 | else | |
8251 | { | |
8252 | r_type = elfcpp::R_POWERPC_NONE; | |
8253 | offset -= 2 * big_endian; | |
8254 | } | |
8255 | } | |
8256 | } | |
8257 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8258 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8259 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8260 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8261 | { | |
8262 | // First instruction of initial exec sequence. | |
8263 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8264 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8265 | { | |
8266 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8267 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8268 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8269 | else | |
8270 | { | |
8271 | r_type = elfcpp::R_POWERPC_NONE; | |
8272 | offset -= 2 * big_endian; | |
8273 | } | |
8274 | } | |
8275 | } | |
8276 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8277 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8278 | { | |
8279 | // Second instruction of a global dynamic sequence, | |
8280 | // the __tls_get_addr call | |
8281 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8282 | switch (this->optimize_tls_gd(final)) | |
8283 | { | |
8284 | case tls::TLSOPT_TO_IE: | |
8285 | r_type = elfcpp::R_POWERPC_NONE; | |
8286 | zap_next = true; | |
8287 | break; | |
8288 | case tls::TLSOPT_TO_LE: | |
8289 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8290 | offset += 2 * big_endian; | |
8291 | zap_next = true; | |
8292 | break; | |
8293 | default: | |
8294 | break; | |
8295 | } | |
8296 | } | |
8297 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8298 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8299 | { | |
8300 | // Second instruction of a local dynamic sequence, | |
8301 | // the __tls_get_addr call | |
8302 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8303 | { | |
8304 | const Output_section* os = relinfo->layout->tls_segment() | |
8305 | ->first_section(); | |
8306 | gold_assert(os != NULL); | |
8307 | gold_assert(os->needs_symtab_index()); | |
8308 | r_sym = os->symtab_index(); | |
8309 | addend = dtp_offset; | |
8310 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8311 | offset += 2 * big_endian; | |
8312 | zap_next = true; | |
8313 | } | |
8314 | } | |
8315 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8316 | { | |
8317 | // Second instruction of an initial exec sequence | |
8318 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8319 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8320 | { | |
8321 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8322 | offset += 2 * big_endian; | |
8323 | } | |
8324 | } | |
8325 | } | |
8326 | ||
8327 | reloc_write.put_r_offset(offset); | |
8328 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
8329 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
8330 | |
8331 | pwrite += reloc_size; | |
8332 | } | |
8333 | ||
8334 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
8335 | == reloc_view_size); | |
42cacb20 DE |
8336 | } |
8337 | ||
ec661b9d | 8338 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
8339 | // treatment. This is how we support equality comparisons of function |
8340 | // pointers across shared library boundaries, as described in the | |
8341 | // processor specific ABI supplement. | |
8342 | ||
8343 | template<int size, bool big_endian> | |
8344 | uint64_t | |
8345 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
8346 | { | |
cf43a2fe AM |
8347 | if (size == 32) |
8348 | { | |
8349 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
8350 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8351 | p != this->stub_tables_.end(); | |
8352 | ++p) | |
8353 | { | |
8354 | Address off = (*p)->find_plt_call_entry(gsym); | |
8355 | if (off != invalid_address) | |
8356 | return (*p)->stub_address() + off; | |
8357 | } | |
c9824451 | 8358 | } |
9055360d AM |
8359 | else if (this->abiversion() >= 2) |
8360 | { | |
faa2211d AM |
8361 | Address off = this->glink_section()->find_global_entry(gsym); |
8362 | if (off != invalid_address) | |
9055360d AM |
8363 | return this->glink_section()->global_entry_address() + off; |
8364 | } | |
ec661b9d | 8365 | gold_unreachable(); |
c9824451 AM |
8366 | } |
8367 | ||
8368 | // Return the PLT address to use for a local symbol. | |
8369 | template<int size, bool big_endian> | |
8370 | uint64_t | |
8371 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
8372 | const Relobj* object, | |
8373 | unsigned int symndx) const | |
8374 | { | |
8375 | if (size == 32) | |
8376 | { | |
8377 | const Sized_relobj<size, big_endian>* relobj | |
8378 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
8379 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8380 | p != this->stub_tables_.end(); | |
8381 | ++p) | |
8382 | { | |
8383 | Address off = (*p)->find_plt_call_entry(relobj->sized_relobj(), | |
8384 | symndx); | |
8385 | if (off != invalid_address) | |
8386 | return (*p)->stub_address() + off; | |
8387 | } | |
c9824451 | 8388 | } |
ec661b9d | 8389 | gold_unreachable(); |
c9824451 AM |
8390 | } |
8391 | ||
8392 | // Return the PLT address to use for a global symbol. | |
8393 | template<int size, bool big_endian> | |
8394 | uint64_t | |
8395 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
8396 | const Symbol* gsym) const | |
8397 | { | |
8398 | if (size == 32) | |
8399 | { | |
ec661b9d AM |
8400 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8401 | p != this->stub_tables_.end(); | |
8402 | ++p) | |
8403 | { | |
8404 | Address off = (*p)->find_plt_call_entry(gsym); | |
8405 | if (off != invalid_address) | |
8406 | return (*p)->stub_address() + off; | |
8407 | } | |
cf43a2fe | 8408 | } |
9055360d AM |
8409 | else if (this->abiversion() >= 2) |
8410 | { | |
faa2211d AM |
8411 | Address off = this->glink_section()->find_global_entry(gsym); |
8412 | if (off != invalid_address) | |
9055360d AM |
8413 | return this->glink_section()->global_entry_address() + off; |
8414 | } | |
ec661b9d | 8415 | gold_unreachable(); |
42cacb20 DE |
8416 | } |
8417 | ||
bd73a62d AM |
8418 | // Return the offset to use for the GOT_INDX'th got entry which is |
8419 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
8420 | template<int size, bool big_endian> | |
8421 | int64_t | |
8422 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
8423 | const Relobj* object, | |
8424 | unsigned int symndx, | |
8425 | unsigned int got_indx) const | |
8426 | { | |
8427 | const Powerpc_relobj<size, big_endian>* ppc_object | |
8428 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
8429 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
8430 | { | |
8431 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8432 | got_type <= GOT_TYPE_TPREL; | |
8433 | got_type = Got_type(got_type + 1)) | |
8434 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
8435 | { | |
8436 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
8437 | if (got_type == GOT_TYPE_TLSGD) | |
8438 | off += size / 8; | |
8439 | if (off == got_indx * (size / 8)) | |
8440 | { | |
8441 | if (got_type == GOT_TYPE_TPREL) | |
8442 | return -tp_offset; | |
8443 | else | |
8444 | return -dtp_offset; | |
8445 | } | |
8446 | } | |
8447 | } | |
8448 | gold_unreachable(); | |
8449 | } | |
8450 | ||
8451 | // Return the offset to use for the GOT_INDX'th got entry which is | |
8452 | // for global tls symbol GSYM. | |
8453 | template<int size, bool big_endian> | |
8454 | int64_t | |
8455 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
8456 | Symbol* gsym, | |
8457 | unsigned int got_indx) const | |
8458 | { | |
8459 | if (gsym->type() == elfcpp::STT_TLS) | |
8460 | { | |
8461 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8462 | got_type <= GOT_TYPE_TPREL; | |
8463 | got_type = Got_type(got_type + 1)) | |
8464 | if (gsym->has_got_offset(got_type)) | |
8465 | { | |
8466 | unsigned int off = gsym->got_offset(got_type); | |
8467 | if (got_type == GOT_TYPE_TLSGD) | |
8468 | off += size / 8; | |
8469 | if (off == got_indx * (size / 8)) | |
8470 | { | |
8471 | if (got_type == GOT_TYPE_TPREL) | |
8472 | return -tp_offset; | |
8473 | else | |
8474 | return -dtp_offset; | |
8475 | } | |
8476 | } | |
8477 | } | |
8478 | gold_unreachable(); | |
8479 | } | |
8480 | ||
42cacb20 DE |
8481 | // The selector for powerpc object files. |
8482 | ||
8483 | template<int size, bool big_endian> | |
8484 | class Target_selector_powerpc : public Target_selector | |
8485 | { | |
8486 | public: | |
8487 | Target_selector_powerpc() | |
edc27beb AM |
8488 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
8489 | size, big_endian, | |
03ef7571 ILT |
8490 | (size == 64 |
8491 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
8492 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
8493 | (size == 64 | |
8494 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
8495 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
8496 | { } |
8497 | ||
2e702c99 RM |
8498 | virtual Target* |
8499 | do_instantiate_target() | |
7f055c20 | 8500 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
8501 | }; |
8502 | ||
8503 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
8504 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
8505 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
8506 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
8507 | ||
decdd3bc AM |
8508 | // Instantiate these constants for -O0 |
8509 | template<int size, bool big_endian> | |
8510 | const int Output_data_glink<size, big_endian>::pltresolve_size; | |
8511 | template<int size, bool big_endian> | |
9055360d AM |
8512 | const typename Output_data_glink<size, big_endian>::Address |
8513 | Output_data_glink<size, big_endian>::invalid_address; | |
8514 | template<int size, bool big_endian> | |
decdd3bc AM |
8515 | const typename Stub_table<size, big_endian>::Address |
8516 | Stub_table<size, big_endian>::invalid_address; | |
8517 | template<int size, bool big_endian> | |
8518 | const typename Target_powerpc<size, big_endian>::Address | |
8519 | Target_powerpc<size, big_endian>::invalid_address; | |
8520 | ||
42cacb20 | 8521 | } // End anonymous namespace. |