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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 | ||
d49044c7 AM |
65 | template<int size, bool big_endian> |
66 | class Output_data_save_res; | |
67 | ||
a3e60ddb AM |
68 | template<int size, bool big_endian> |
69 | class Target_powerpc; | |
70 | ||
71 | struct Stub_table_owner | |
72 | { | |
73 | Output_section* output_section; | |
74 | const Output_section::Input_section* owner; | |
75 | }; | |
76 | ||
4d9aa155 AM |
77 | inline bool |
78 | is_branch_reloc(unsigned int r_type); | |
79 | ||
cf43a2fe AM |
80 | template<int size, bool big_endian> |
81 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
82 | { | |
83 | public: | |
dd93cd0a | 84 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
e81fea4d AM |
85 | typedef Unordered_set<Section_id, Section_id_hash> Section_refs; |
86 | typedef Unordered_map<Address, Section_refs> Access_from; | |
c9269dff | 87 | |
cf43a2fe AM |
88 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
89 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
90 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
d8f5a274 | 91 | special_(0), has_small_toc_reloc_(false), opd_valid_(false), |
a3e60ddb | 92 | opd_ent_(), access_from_map_(), has14_(), stub_table_index_(), |
b4f7960d AM |
93 | e_flags_(ehdr.get_e_flags()), st_other_() |
94 | { | |
95 | this->set_abiversion(0); | |
96 | } | |
cf43a2fe AM |
97 | |
98 | ~Powerpc_relobj() | |
99 | { } | |
100 | ||
b4f7960d AM |
101 | // Read the symbols then set up st_other vector. |
102 | void | |
103 | do_read_symbols(Read_symbols_data*); | |
104 | ||
c9269dff | 105 | // The .got2 section shndx. |
cf43a2fe AM |
106 | unsigned int |
107 | got2_shndx() const | |
108 | { | |
109 | if (size == 32) | |
c9269dff | 110 | return this->special_; |
cf43a2fe AM |
111 | else |
112 | return 0; | |
113 | } | |
114 | ||
c9269dff AM |
115 | // The .opd section shndx. |
116 | unsigned int | |
117 | opd_shndx() const | |
118 | { | |
119 | if (size == 32) | |
120 | return 0; | |
121 | else | |
122 | return this->special_; | |
123 | } | |
124 | ||
125 | // Init OPD entry arrays. | |
126 | void | |
127 | init_opd(size_t opd_size) | |
128 | { | |
129 | size_t count = this->opd_ent_ndx(opd_size); | |
bfdfa4cd | 130 | this->opd_ent_.resize(count); |
c9269dff AM |
131 | } |
132 | ||
133 | // Return section and offset of function entry for .opd + R_OFF. | |
e81fea4d AM |
134 | unsigned int |
135 | get_opd_ent(Address r_off, Address* value = NULL) const | |
c9269dff AM |
136 | { |
137 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
138 | gold_assert(ndx < this->opd_ent_.size()); |
139 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
e81fea4d | 140 | if (value != NULL) |
bfdfa4cd AM |
141 | *value = this->opd_ent_[ndx].off; |
142 | return this->opd_ent_[ndx].shndx; | |
c9269dff AM |
143 | } |
144 | ||
145 | // Set section and offset of function entry for .opd + R_OFF. | |
146 | void | |
dd93cd0a | 147 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
148 | { |
149 | size_t ndx = this->opd_ent_ndx(r_off); | |
bfdfa4cd AM |
150 | gold_assert(ndx < this->opd_ent_.size()); |
151 | this->opd_ent_[ndx].shndx = shndx; | |
152 | this->opd_ent_[ndx].off = value; | |
153 | } | |
154 | ||
155 | // Return discard flag for .opd + R_OFF. | |
156 | bool | |
157 | get_opd_discard(Address r_off) const | |
158 | { | |
159 | size_t ndx = this->opd_ent_ndx(r_off); | |
160 | gold_assert(ndx < this->opd_ent_.size()); | |
161 | return this->opd_ent_[ndx].discard; | |
162 | } | |
163 | ||
164 | // Set discard flag for .opd + R_OFF. | |
165 | void | |
166 | set_opd_discard(Address r_off) | |
167 | { | |
168 | size_t ndx = this->opd_ent_ndx(r_off); | |
169 | gold_assert(ndx < this->opd_ent_.size()); | |
170 | this->opd_ent_[ndx].discard = true; | |
c9269dff AM |
171 | } |
172 | ||
e81fea4d AM |
173 | bool |
174 | opd_valid() const | |
175 | { return this->opd_valid_; } | |
176 | ||
177 | void | |
178 | set_opd_valid() | |
179 | { this->opd_valid_ = true; } | |
180 | ||
c9269dff AM |
181 | // Examine .rela.opd to build info about function entry points. |
182 | void | |
183 | scan_opd_relocs(size_t reloc_count, | |
184 | const unsigned char* prelocs, | |
185 | const unsigned char* plocal_syms); | |
186 | ||
26a4e9cb AM |
187 | // Perform the Sized_relobj_file method, then set up opd info from |
188 | // .opd relocs. | |
c9269dff AM |
189 | void |
190 | do_read_relocs(Read_relocs_data*); | |
191 | ||
cf43a2fe AM |
192 | bool |
193 | do_find_special_sections(Read_symbols_data* sd); | |
194 | ||
ec4dbad3 AM |
195 | // Adjust this local symbol value. Return false if the symbol |
196 | // should be discarded from the output file. | |
197 | bool | |
198 | do_adjust_local_symbol(Symbol_value<size>* lv) const | |
199 | { | |
200 | if (size == 64 && this->opd_shndx() != 0) | |
201 | { | |
202 | bool is_ordinary; | |
203 | if (lv->input_shndx(&is_ordinary) != this->opd_shndx()) | |
204 | return true; | |
205 | if (this->get_opd_discard(lv->input_value())) | |
206 | return false; | |
207 | } | |
208 | return true; | |
209 | } | |
210 | ||
6c77229c AM |
211 | Access_from* |
212 | access_from_map() | |
213 | { return &this->access_from_map_; } | |
214 | ||
215 | // Add a reference from SRC_OBJ, SRC_INDX to this object's .opd | |
216 | // section at DST_OFF. | |
217 | void | |
efc6fa12 | 218 | add_reference(Relobj* src_obj, |
6c77229c AM |
219 | unsigned int src_indx, |
220 | typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
221 | { | |
222 | Section_id src_id(src_obj, src_indx); | |
223 | this->access_from_map_[dst_off].insert(src_id); | |
224 | } | |
225 | ||
226 | // Add a reference to the code section specified by the .opd entry | |
227 | // at DST_OFF | |
228 | void | |
229 | add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off) | |
230 | { | |
231 | size_t ndx = this->opd_ent_ndx(dst_off); | |
232 | if (ndx >= this->opd_ent_.size()) | |
233 | this->opd_ent_.resize(ndx + 1); | |
234 | this->opd_ent_[ndx].gc_mark = true; | |
235 | } | |
236 | ||
237 | void | |
238 | process_gc_mark(Symbol_table* symtab) | |
239 | { | |
240 | for (size_t i = 0; i < this->opd_ent_.size(); i++) | |
241 | if (this->opd_ent_[i].gc_mark) | |
242 | { | |
243 | unsigned int shndx = this->opd_ent_[i].shndx; | |
4277535c | 244 | symtab->gc()->worklist().push_back(Section_id(this, shndx)); |
6c77229c AM |
245 | } |
246 | } | |
247 | ||
dd93cd0a AM |
248 | // Return offset in output GOT section that this object will use |
249 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
250 | Address | |
251 | toc_base_offset() const | |
252 | { return 0x8000; } | |
253 | ||
d8f5a274 AM |
254 | void |
255 | set_has_small_toc_reloc() | |
256 | { has_small_toc_reloc_ = true; } | |
257 | ||
258 | bool | |
259 | has_small_toc_reloc() const | |
260 | { return has_small_toc_reloc_; } | |
261 | ||
ec661b9d AM |
262 | void |
263 | set_has_14bit_branch(unsigned int shndx) | |
264 | { | |
265 | if (shndx >= this->has14_.size()) | |
266 | this->has14_.resize(shndx + 1); | |
267 | this->has14_[shndx] = true; | |
268 | } | |
269 | ||
270 | bool | |
271 | has_14bit_branch(unsigned int shndx) const | |
272 | { return shndx < this->has14_.size() && this->has14_[shndx]; } | |
273 | ||
274 | void | |
a3e60ddb | 275 | set_stub_table(unsigned int shndx, unsigned int stub_index) |
ec661b9d | 276 | { |
a3e60ddb AM |
277 | if (shndx >= this->stub_table_index_.size()) |
278 | this->stub_table_index_.resize(shndx + 1); | |
279 | this->stub_table_index_[shndx] = stub_index; | |
ec661b9d AM |
280 | } |
281 | ||
282 | Stub_table<size, big_endian>* | |
283 | stub_table(unsigned int shndx) | |
284 | { | |
a3e60ddb AM |
285 | if (shndx < this->stub_table_index_.size()) |
286 | { | |
287 | Target_powerpc<size, big_endian>* target | |
288 | = static_cast<Target_powerpc<size, big_endian>*>( | |
289 | parameters->sized_target<size, big_endian>()); | |
290 | unsigned int indx = this->stub_table_index_[shndx]; | |
291 | gold_assert(indx < target->stub_tables().size()); | |
292 | return target->stub_tables()[indx]; | |
293 | } | |
ec661b9d AM |
294 | return NULL; |
295 | } | |
296 | ||
a3e60ddb AM |
297 | void |
298 | clear_stub_table() | |
299 | { | |
300 | this->stub_table_index_.clear(); | |
301 | } | |
302 | ||
b4f7960d AM |
303 | int |
304 | abiversion() const | |
305 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
306 | ||
307 | // Set ABI version for input and output | |
308 | void | |
309 | set_abiversion(int ver); | |
310 | ||
311 | unsigned int | |
312 | ppc64_local_entry_offset(const Symbol* sym) const | |
313 | { return elfcpp::ppc64_decode_local_entry(sym->nonvis() >> 3); } | |
314 | ||
315 | unsigned int | |
316 | ppc64_local_entry_offset(unsigned int symndx) const | |
317 | { return elfcpp::ppc64_decode_local_entry(this->st_other_[symndx] >> 5); } | |
318 | ||
cf43a2fe | 319 | private: |
bfdfa4cd AM |
320 | struct Opd_ent |
321 | { | |
322 | unsigned int shndx; | |
c6de8ed4 AM |
323 | bool discard : 1; |
324 | bool gc_mark : 1; | |
26a4e9cb | 325 | Address off; |
bfdfa4cd AM |
326 | }; |
327 | ||
328 | // Return index into opd_ent_ array for .opd entry at OFF. | |
329 | // .opd entries are 24 bytes long, but they can be spaced 16 bytes | |
330 | // apart when the language doesn't use the last 8-byte word, the | |
331 | // environment pointer. Thus dividing the entry section offset by | |
332 | // 16 will give an index into opd_ent_ that works for either layout | |
333 | // of .opd. (It leaves some elements of the vector unused when .opd | |
334 | // entries are spaced 24 bytes apart, but we don't know the spacing | |
335 | // until relocations are processed, and in any case it is possible | |
336 | // for an object to have some entries spaced 16 bytes apart and | |
337 | // others 24 bytes apart.) | |
c9269dff AM |
338 | size_t |
339 | opd_ent_ndx(size_t off) const | |
340 | { return off >> 4;} | |
341 | ||
342 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. | |
343 | unsigned int special_; | |
bfdfa4cd | 344 | |
d8f5a274 AM |
345 | // For 64-bit, whether this object uses small model relocs to access |
346 | // the toc. | |
347 | bool has_small_toc_reloc_; | |
348 | ||
bfdfa4cd AM |
349 | // Set at the start of gc_process_relocs, when we know opd_ent_ |
350 | // vector is valid. The flag could be made atomic and set in | |
351 | // do_read_relocs with memory_order_release and then tested with | |
352 | // memory_order_acquire, potentially resulting in fewer entries in | |
353 | // access_from_map_. | |
354 | bool opd_valid_; | |
355 | ||
c9269dff AM |
356 | // The first 8-byte word of an OPD entry gives the address of the |
357 | // entry point of the function. Relocatable object files have a | |
bfdfa4cd | 358 | // relocation on this word. The following vector records the |
c9269dff | 359 | // section and offset specified by these relocations. |
bfdfa4cd AM |
360 | std::vector<Opd_ent> opd_ent_; |
361 | ||
e81fea4d | 362 | // References made to this object's .opd section when running |
bfdfa4cd AM |
363 | // gc_process_relocs for another object, before the opd_ent_ vector |
364 | // is valid for this object. | |
e81fea4d | 365 | Access_from access_from_map_; |
ec661b9d AM |
366 | |
367 | // Whether input section has a 14-bit branch reloc. | |
368 | std::vector<bool> has14_; | |
369 | ||
370 | // The stub table to use for a given input section. | |
a3e60ddb | 371 | std::vector<unsigned int> stub_table_index_; |
b4f7960d AM |
372 | |
373 | // Header e_flags | |
374 | elfcpp::Elf_Word e_flags_; | |
375 | ||
376 | // ELF st_other field for local symbols. | |
377 | std::vector<unsigned char> st_other_; | |
cf43a2fe AM |
378 | }; |
379 | ||
dc3714f3 AM |
380 | template<int size, bool big_endian> |
381 | class Powerpc_dynobj : public Sized_dynobj<size, big_endian> | |
382 | { | |
383 | public: | |
384 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
385 | ||
386 | Powerpc_dynobj(const std::string& name, Input_file* input_file, off_t offset, | |
387 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
388 | : Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr), | |
b4f7960d AM |
389 | opd_shndx_(0), opd_ent_(), e_flags_(ehdr.get_e_flags()) |
390 | { | |
391 | this->set_abiversion(0); | |
392 | } | |
dc3714f3 AM |
393 | |
394 | ~Powerpc_dynobj() | |
395 | { } | |
396 | ||
397 | // Call Sized_dynobj::do_read_symbols to read the symbols then | |
398 | // read .opd from a dynamic object, filling in opd_ent_ vector, | |
399 | void | |
400 | do_read_symbols(Read_symbols_data*); | |
401 | ||
402 | // The .opd section shndx. | |
403 | unsigned int | |
404 | opd_shndx() const | |
405 | { | |
406 | return this->opd_shndx_; | |
407 | } | |
408 | ||
409 | // The .opd section address. | |
410 | Address | |
411 | opd_address() const | |
412 | { | |
413 | return this->opd_address_; | |
414 | } | |
415 | ||
416 | // Init OPD entry arrays. | |
417 | void | |
418 | init_opd(size_t opd_size) | |
419 | { | |
420 | size_t count = this->opd_ent_ndx(opd_size); | |
421 | this->opd_ent_.resize(count); | |
422 | } | |
423 | ||
424 | // Return section and offset of function entry for .opd + R_OFF. | |
425 | unsigned int | |
426 | get_opd_ent(Address r_off, Address* value = NULL) const | |
427 | { | |
428 | size_t ndx = this->opd_ent_ndx(r_off); | |
429 | gold_assert(ndx < this->opd_ent_.size()); | |
430 | gold_assert(this->opd_ent_[ndx].shndx != 0); | |
431 | if (value != NULL) | |
432 | *value = this->opd_ent_[ndx].off; | |
433 | return this->opd_ent_[ndx].shndx; | |
434 | } | |
435 | ||
436 | // Set section and offset of function entry for .opd + R_OFF. | |
437 | void | |
438 | set_opd_ent(Address r_off, unsigned int shndx, Address value) | |
439 | { | |
440 | size_t ndx = this->opd_ent_ndx(r_off); | |
441 | gold_assert(ndx < this->opd_ent_.size()); | |
442 | this->opd_ent_[ndx].shndx = shndx; | |
443 | this->opd_ent_[ndx].off = value; | |
444 | } | |
445 | ||
b4f7960d AM |
446 | int |
447 | abiversion() const | |
448 | { return this->e_flags_ & elfcpp::EF_PPC64_ABI; } | |
449 | ||
450 | // Set ABI version for input and output. | |
451 | void | |
452 | set_abiversion(int ver); | |
453 | ||
dc3714f3 AM |
454 | private: |
455 | // Used to specify extent of executable sections. | |
456 | struct Sec_info | |
457 | { | |
458 | Sec_info(Address start_, Address len_, unsigned int shndx_) | |
459 | : start(start_), len(len_), shndx(shndx_) | |
460 | { } | |
461 | ||
462 | bool | |
463 | operator<(const Sec_info& that) const | |
464 | { return this->start < that.start; } | |
465 | ||
466 | Address start; | |
467 | Address len; | |
468 | unsigned int shndx; | |
469 | }; | |
470 | ||
471 | struct Opd_ent | |
472 | { | |
473 | unsigned int shndx; | |
474 | Address off; | |
475 | }; | |
476 | ||
477 | // Return index into opd_ent_ array for .opd entry at OFF. | |
478 | size_t | |
479 | opd_ent_ndx(size_t off) const | |
480 | { return off >> 4;} | |
481 | ||
482 | // For 64-bit the .opd section shndx and address. | |
483 | unsigned int opd_shndx_; | |
484 | Address opd_address_; | |
485 | ||
486 | // The first 8-byte word of an OPD entry gives the address of the | |
487 | // entry point of the function. Records the section and offset | |
488 | // corresponding to the address. Note that in dynamic objects, | |
489 | // offset is *not* relative to the section. | |
490 | std::vector<Opd_ent> opd_ent_; | |
b4f7960d AM |
491 | |
492 | // Header e_flags | |
493 | elfcpp::Elf_Word e_flags_; | |
dc3714f3 AM |
494 | }; |
495 | ||
42cacb20 DE |
496 | template<int size, bool big_endian> |
497 | class Target_powerpc : public Sized_target<size, big_endian> | |
498 | { | |
499 | public: | |
d83ce4e3 AM |
500 | typedef |
501 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 502 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 503 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
c9269dff | 504 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
505 | // Offset of tp and dtp pointers from start of TLS block. |
506 | static const Address tp_offset = 0x7000; | |
507 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
508 | |
509 | Target_powerpc() | |
510 | : Sized_target<size, big_endian>(&powerpc_info), | |
ec661b9d AM |
511 | got_(NULL), plt_(NULL), iplt_(NULL), brlt_section_(NULL), |
512 | glink_(NULL), rela_dyn_(NULL), copy_relocs_(elfcpp::R_POWERPC_COPY), | |
43819297 | 513 | tlsld_got_offset_(-1U), |
9e69ed50 | 514 | stub_tables_(), branch_lookup_table_(), branch_info_(), |
a3e60ddb | 515 | plt_thread_safe_(false), relax_failed_(false), relax_fail_count_(0), |
d49044c7 | 516 | stub_group_size_(0), savres_section_(0) |
42cacb20 DE |
517 | { |
518 | } | |
519 | ||
2e702c99 | 520 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
521 | // garbage collection. |
522 | void | |
ad0f2072 | 523 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
524 | Layout* layout, |
525 | Sized_relobj_file<size, big_endian>* object, | |
526 | unsigned int data_shndx, | |
527 | unsigned int sh_type, | |
528 | const unsigned char* prelocs, | |
529 | size_t reloc_count, | |
530 | Output_section* output_section, | |
531 | bool needs_special_offset_handling, | |
532 | size_t local_symbol_count, | |
533 | const unsigned char* plocal_symbols); | |
6d03d481 | 534 | |
42cacb20 DE |
535 | // Scan the relocations to look for symbol adjustments. |
536 | void | |
ad0f2072 | 537 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 538 | Layout* layout, |
6fa2a40b | 539 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
540 | unsigned int data_shndx, |
541 | unsigned int sh_type, | |
542 | const unsigned char* prelocs, | |
543 | size_t reloc_count, | |
544 | Output_section* output_section, | |
545 | bool needs_special_offset_handling, | |
546 | size_t local_symbol_count, | |
547 | const unsigned char* plocal_symbols); | |
921b5322 AM |
548 | |
549 | // Map input .toc section to output .got section. | |
550 | const char* | |
551 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
552 | { | |
553 | if (size == 64 && strcmp(name, ".toc") == 0) | |
554 | { | |
555 | *plen = 4; | |
556 | return ".got"; | |
557 | } | |
558 | return NULL; | |
559 | } | |
560 | ||
f3a0ed29 AM |
561 | // Provide linker defined save/restore functions. |
562 | void | |
563 | define_save_restore_funcs(Layout*, Symbol_table*); | |
564 | ||
ec661b9d AM |
565 | // No stubs unless a final link. |
566 | bool | |
567 | do_may_relax() const | |
568 | { return !parameters->options().relocatable(); } | |
569 | ||
570 | bool | |
571 | do_relax(int, const Input_objects*, Symbol_table*, Layout*, const Task*); | |
572 | ||
9d5781f8 AM |
573 | void |
574 | do_plt_fde_location(const Output_data*, unsigned char*, | |
575 | uint64_t*, off_t*) const; | |
576 | ||
ec661b9d AM |
577 | // Stash info about branches, for stub generation. |
578 | void | |
579 | push_branch(Powerpc_relobj<size, big_endian>* ppc_object, | |
580 | unsigned int data_shndx, Address r_offset, | |
581 | unsigned int r_type, unsigned int r_sym, Address addend) | |
582 | { | |
583 | Branch_info info(ppc_object, data_shndx, r_offset, r_type, r_sym, addend); | |
584 | this->branch_info_.push_back(info); | |
585 | if (r_type == elfcpp::R_POWERPC_REL14 | |
586 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
587 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
588 | ppc_object->set_has_14bit_branch(data_shndx); | |
589 | } | |
590 | ||
f43ba157 AM |
591 | void |
592 | do_define_standard_symbols(Symbol_table*, Layout*); | |
593 | ||
42cacb20 DE |
594 | // Finalize the sections. |
595 | void | |
f59f41f3 | 596 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
597 | |
598 | // Return the value to use for a dynamic which requires special | |
599 | // treatment. | |
600 | uint64_t | |
601 | do_dynsym_value(const Symbol*) const; | |
602 | ||
c9824451 AM |
603 | // Return the PLT address to use for a local symbol. |
604 | uint64_t | |
605 | do_plt_address_for_local(const Relobj*, unsigned int) const; | |
606 | ||
607 | // Return the PLT address to use for a global symbol. | |
608 | uint64_t | |
609 | do_plt_address_for_global(const Symbol*) const; | |
610 | ||
bd73a62d AM |
611 | // Return the offset to use for the GOT_INDX'th got entry which is |
612 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
613 | int64_t | |
614 | do_tls_offset_for_local(const Relobj* object, | |
615 | unsigned int symndx, | |
616 | unsigned int got_indx) const; | |
617 | ||
618 | // Return the offset to use for the GOT_INDX'th got entry which is | |
619 | // for global tls symbol GSYM. | |
620 | int64_t | |
621 | do_tls_offset_for_global(Symbol* gsym, unsigned int got_indx) const; | |
622 | ||
dc3714f3 AM |
623 | void |
624 | do_function_location(Symbol_location*) const; | |
625 | ||
4d9aa155 AM |
626 | bool |
627 | do_can_check_for_function_pointers() const | |
628 | { return true; } | |
629 | ||
bbec1a5d AM |
630 | // Adjust -fsplit-stack code which calls non-split-stack code. |
631 | void | |
632 | do_calls_non_split(Relobj* object, unsigned int shndx, | |
633 | section_offset_type fnoffset, section_size_type fnsize, | |
634 | unsigned char* view, section_size_type view_size, | |
635 | std::string* from, std::string* to) const; | |
636 | ||
42cacb20 DE |
637 | // Relocate a section. |
638 | void | |
639 | relocate_section(const Relocate_info<size, big_endian>*, | |
640 | unsigned int sh_type, | |
641 | const unsigned char* prelocs, | |
642 | size_t reloc_count, | |
643 | Output_section* output_section, | |
644 | bool needs_special_offset_handling, | |
645 | unsigned char* view, | |
c9269dff | 646 | Address view_address, |
364c7fa5 ILT |
647 | section_size_type view_size, |
648 | const Reloc_symbol_changes*); | |
42cacb20 DE |
649 | |
650 | // Scan the relocs during a relocatable link. | |
651 | void | |
ad0f2072 | 652 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 653 | Layout* layout, |
6fa2a40b | 654 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
655 | unsigned int data_shndx, |
656 | unsigned int sh_type, | |
657 | const unsigned char* prelocs, | |
658 | size_t reloc_count, | |
659 | Output_section* output_section, | |
660 | bool needs_special_offset_handling, | |
661 | size_t local_symbol_count, | |
662 | const unsigned char* plocal_symbols, | |
663 | Relocatable_relocs*); | |
664 | ||
7404fe1b | 665 | // Emit relocations for a section. |
42cacb20 | 666 | void |
7404fe1b AM |
667 | relocate_relocs(const Relocate_info<size, big_endian>*, |
668 | unsigned int sh_type, | |
669 | const unsigned char* prelocs, | |
670 | size_t reloc_count, | |
671 | Output_section* output_section, | |
62fe925a RM |
672 | typename elfcpp::Elf_types<size>::Elf_Off |
673 | offset_in_output_section, | |
7404fe1b AM |
674 | const Relocatable_relocs*, |
675 | unsigned char*, | |
676 | Address view_address, | |
677 | section_size_type, | |
678 | unsigned char* reloc_view, | |
679 | section_size_type reloc_view_size); | |
42cacb20 DE |
680 | |
681 | // Return whether SYM is defined by the ABI. | |
682 | bool | |
9c2d0ef9 | 683 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 684 | { |
cf43a2fe | 685 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
686 | } |
687 | ||
688 | // Return the size of the GOT section. | |
689 | section_size_type | |
0e70b911 | 690 | got_size() const |
42cacb20 DE |
691 | { |
692 | gold_assert(this->got_ != NULL); | |
693 | return this->got_->data_size(); | |
694 | } | |
695 | ||
cf43a2fe AM |
696 | // Get the PLT section. |
697 | const Output_data_plt_powerpc<size, big_endian>* | |
698 | plt_section() const | |
699 | { | |
700 | gold_assert(this->plt_ != NULL); | |
701 | return this->plt_; | |
702 | } | |
703 | ||
e5d5f5ed AM |
704 | // Get the IPLT section. |
705 | const Output_data_plt_powerpc<size, big_endian>* | |
706 | iplt_section() const | |
707 | { | |
708 | gold_assert(this->iplt_ != NULL); | |
709 | return this->iplt_; | |
710 | } | |
711 | ||
cf43a2fe AM |
712 | // Get the .glink section. |
713 | const Output_data_glink<size, big_endian>* | |
714 | glink_section() const | |
715 | { | |
716 | gold_assert(this->glink_ != NULL); | |
717 | return this->glink_; | |
718 | } | |
719 | ||
9055360d AM |
720 | Output_data_glink<size, big_endian>* |
721 | glink_section() | |
722 | { | |
723 | gold_assert(this->glink_ != NULL); | |
724 | return this->glink_; | |
725 | } | |
726 | ||
9d5781f8 AM |
727 | bool has_glink() const |
728 | { return this->glink_ != NULL; } | |
729 | ||
cf43a2fe AM |
730 | // Get the GOT section. |
731 | const Output_data_got_powerpc<size, big_endian>* | |
732 | got_section() const | |
733 | { | |
734 | gold_assert(this->got_ != NULL); | |
735 | return this->got_; | |
736 | } | |
737 | ||
26a4e9cb AM |
738 | // Get the GOT section, creating it if necessary. |
739 | Output_data_got_powerpc<size, big_endian>* | |
740 | got_section(Symbol_table*, Layout*); | |
741 | ||
cf43a2fe AM |
742 | Object* |
743 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
744 | const elfcpp::Ehdr<size, big_endian>&); | |
745 | ||
0e70b911 CC |
746 | // Return the number of entries in the GOT. |
747 | unsigned int | |
748 | got_entry_count() const | |
749 | { | |
750 | if (this->got_ == NULL) | |
751 | return 0; | |
752 | return this->got_size() / (size / 8); | |
753 | } | |
754 | ||
755 | // Return the number of entries in the PLT. | |
756 | unsigned int | |
757 | plt_entry_count() const; | |
758 | ||
759 | // Return the offset of the first non-reserved PLT entry. | |
760 | unsigned int | |
b4f7960d AM |
761 | first_plt_entry_offset() const |
762 | { | |
763 | if (size == 32) | |
764 | return 0; | |
765 | if (this->abiversion() >= 2) | |
766 | return 16; | |
767 | return 24; | |
768 | } | |
0e70b911 CC |
769 | |
770 | // Return the size of each PLT entry. | |
771 | unsigned int | |
b4f7960d AM |
772 | plt_entry_size() const |
773 | { | |
774 | if (size == 32) | |
775 | return 4; | |
776 | if (this->abiversion() >= 2) | |
777 | return 8; | |
778 | return 24; | |
779 | } | |
0e70b911 | 780 | |
d49044c7 AM |
781 | Output_data_save_res<size, big_endian>* |
782 | savres_section() const | |
783 | { | |
784 | return this->savres_section_; | |
785 | } | |
786 | ||
e81fea4d AM |
787 | // Add any special sections for this symbol to the gc work list. |
788 | // For powerpc64, this adds the code section of a function | |
789 | // descriptor. | |
790 | void | |
791 | do_gc_mark_symbol(Symbol_table* symtab, Symbol* sym) const; | |
792 | ||
793 | // Handle target specific gc actions when adding a gc reference from | |
794 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
795 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
796 | // section of a function descriptor. | |
797 | void | |
798 | do_gc_add_reference(Symbol_table* symtab, | |
efc6fa12 | 799 | Relobj* src_obj, |
e81fea4d | 800 | unsigned int src_shndx, |
efc6fa12 | 801 | Relobj* dst_obj, |
e81fea4d AM |
802 | unsigned int dst_shndx, |
803 | Address dst_off) const; | |
804 | ||
ec661b9d AM |
805 | typedef std::vector<Stub_table<size, big_endian>*> Stub_tables; |
806 | const Stub_tables& | |
807 | stub_tables() const | |
808 | { return this->stub_tables_; } | |
809 | ||
810 | const Output_data_brlt_powerpc<size, big_endian>* | |
811 | brlt_section() const | |
812 | { return this->brlt_section_; } | |
813 | ||
814 | void | |
815 | add_branch_lookup_table(Address to) | |
816 | { | |
817 | unsigned int off = this->branch_lookup_table_.size() * (size / 8); | |
818 | this->branch_lookup_table_.insert(std::make_pair(to, off)); | |
819 | } | |
820 | ||
821 | Address | |
822 | find_branch_lookup_table(Address to) | |
823 | { | |
824 | typename Branch_lookup_table::const_iterator p | |
825 | = this->branch_lookup_table_.find(to); | |
826 | return p == this->branch_lookup_table_.end() ? invalid_address : p->second; | |
827 | } | |
828 | ||
829 | void | |
830 | write_branch_lookup_table(unsigned char *oview) | |
831 | { | |
832 | for (typename Branch_lookup_table::const_iterator p | |
833 | = this->branch_lookup_table_.begin(); | |
834 | p != this->branch_lookup_table_.end(); | |
835 | ++p) | |
836 | { | |
4d5effb9 | 837 | elfcpp::Swap<size, big_endian>::writeval(oview + p->second, p->first); |
ec661b9d AM |
838 | } |
839 | } | |
840 | ||
9e69ed50 AM |
841 | bool |
842 | plt_thread_safe() const | |
843 | { return this->plt_thread_safe_; } | |
844 | ||
b4f7960d AM |
845 | int |
846 | abiversion () const | |
847 | { return this->processor_specific_flags() & elfcpp::EF_PPC64_ABI; } | |
848 | ||
849 | void | |
850 | set_abiversion (int ver) | |
851 | { | |
852 | elfcpp::Elf_Word flags = this->processor_specific_flags(); | |
853 | flags &= ~elfcpp::EF_PPC64_ABI; | |
854 | flags |= ver & elfcpp::EF_PPC64_ABI; | |
855 | this->set_processor_specific_flags(flags); | |
856 | } | |
857 | ||
858 | // Offset to to save stack slot | |
859 | int | |
860 | stk_toc () const | |
861 | { return this->abiversion() < 2 ? 40 : 24; } | |
862 | ||
42cacb20 DE |
863 | private: |
864 | ||
e3deeb9c AM |
865 | class Track_tls |
866 | { | |
867 | public: | |
868 | enum Tls_get_addr | |
869 | { | |
870 | NOT_EXPECTED = 0, | |
871 | EXPECTED = 1, | |
872 | SKIP = 2, | |
873 | NORMAL = 3 | |
874 | }; | |
875 | ||
876 | Track_tls() | |
877 | : tls_get_addr_(NOT_EXPECTED), | |
878 | relinfo_(NULL), relnum_(0), r_offset_(0) | |
879 | { } | |
880 | ||
881 | ~Track_tls() | |
882 | { | |
883 | if (this->tls_get_addr_ != NOT_EXPECTED) | |
884 | this->missing(); | |
885 | } | |
886 | ||
887 | void | |
888 | missing(void) | |
889 | { | |
890 | if (this->relinfo_ != NULL) | |
891 | gold_error_at_location(this->relinfo_, this->relnum_, this->r_offset_, | |
892 | _("missing expected __tls_get_addr call")); | |
893 | } | |
894 | ||
895 | void | |
896 | expect_tls_get_addr_call( | |
897 | const Relocate_info<size, big_endian>* relinfo, | |
898 | size_t relnum, | |
899 | Address r_offset) | |
900 | { | |
901 | this->tls_get_addr_ = EXPECTED; | |
902 | this->relinfo_ = relinfo; | |
903 | this->relnum_ = relnum; | |
904 | this->r_offset_ = r_offset; | |
905 | } | |
906 | ||
907 | void | |
908 | expect_tls_get_addr_call() | |
909 | { this->tls_get_addr_ = EXPECTED; } | |
910 | ||
911 | void | |
912 | skip_next_tls_get_addr_call() | |
913 | {this->tls_get_addr_ = SKIP; } | |
914 | ||
915 | Tls_get_addr | |
916 | maybe_skip_tls_get_addr_call(unsigned int r_type, const Symbol* gsym) | |
917 | { | |
918 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
919 | || r_type == elfcpp::R_PPC_PLTREL24) | |
920 | && gsym != NULL | |
921 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
922 | Tls_get_addr last_tls = this->tls_get_addr_; | |
923 | this->tls_get_addr_ = NOT_EXPECTED; | |
924 | if (is_tls_call && last_tls != EXPECTED) | |
925 | return last_tls; | |
926 | else if (!is_tls_call && last_tls != NOT_EXPECTED) | |
927 | { | |
928 | this->missing(); | |
929 | return EXPECTED; | |
930 | } | |
931 | return NORMAL; | |
932 | } | |
933 | ||
934 | private: | |
935 | // What we're up to regarding calls to __tls_get_addr. | |
936 | // On powerpc, the branch and link insn making a call to | |
937 | // __tls_get_addr is marked with a relocation, R_PPC64_TLSGD, | |
938 | // R_PPC64_TLSLD, R_PPC_TLSGD or R_PPC_TLSLD, in addition to the | |
939 | // usual R_POWERPC_REL24 or R_PPC_PLTREL25 relocation on a call. | |
940 | // The marker relocation always comes first, and has the same | |
941 | // symbol as the reloc on the insn setting up the __tls_get_addr | |
942 | // argument. This ties the arg setup insn with the call insn, | |
943 | // allowing ld to safely optimize away the call. We check that | |
944 | // every call to __tls_get_addr has a marker relocation, and that | |
945 | // every marker relocation is on a call to __tls_get_addr. | |
946 | Tls_get_addr tls_get_addr_; | |
947 | // Info about the last reloc for error message. | |
948 | const Relocate_info<size, big_endian>* relinfo_; | |
949 | size_t relnum_; | |
950 | Address r_offset_; | |
951 | }; | |
952 | ||
42cacb20 | 953 | // The class which scans relocations. |
e3deeb9c | 954 | class Scan : protected Track_tls |
42cacb20 DE |
955 | { |
956 | public: | |
bfdfa4cd AM |
957 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
958 | ||
42cacb20 | 959 | Scan() |
e3deeb9c | 960 | : Track_tls(), issued_non_pic_error_(false) |
42cacb20 DE |
961 | { } |
962 | ||
95a2c8d6 | 963 | static inline int |
88b8e639 | 964 | get_reference_flags(unsigned int r_type, const Target_powerpc* target); |
95a2c8d6 | 965 | |
42cacb20 | 966 | inline void |
ad0f2072 | 967 | local(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, | |
bfdfa4cd AM |
972 | const elfcpp::Sym<size, big_endian>& lsym, |
973 | bool is_discarded); | |
42cacb20 DE |
974 | |
975 | inline void | |
ad0f2072 | 976 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 977 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
978 | unsigned int data_shndx, |
979 | Output_section* output_section, | |
980 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
981 | Symbol* gsym); | |
982 | ||
21bb3914 ST |
983 | inline bool |
984 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
985 | Target_powerpc* , | |
f6971787 | 986 | Sized_relobj_file<size, big_endian>* relobj, |
21bb3914 | 987 | unsigned int , |
2e702c99 RM |
988 | Output_section* , |
989 | const elfcpp::Rela<size, big_endian>& , | |
4d9aa155 | 990 | unsigned int r_type, |
2e702c99 | 991 | const elfcpp::Sym<size, big_endian>&) |
4d9aa155 AM |
992 | { |
993 | // PowerPC64 .opd is not folded, so any identical function text | |
994 | // may be folded and we'll still keep function addresses distinct. | |
995 | // That means no reloc is of concern here. | |
996 | if (size == 64) | |
f6971787 AM |
997 | { |
998 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
999 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1000 | if (ppcobj->abiversion() == 1) | |
1001 | return false; | |
1002 | } | |
1003 | // For 32-bit and ELFv2, conservatively assume anything but calls to | |
4d9aa155 AM |
1004 | // function code might be taking the address of the function. |
1005 | return !is_branch_reloc(r_type); | |
1006 | } | |
21bb3914 ST |
1007 | |
1008 | inline bool | |
1009 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
1010 | Target_powerpc* , | |
f6971787 | 1011 | Sized_relobj_file<size, big_endian>* relobj, |
2e702c99 RM |
1012 | unsigned int , |
1013 | Output_section* , | |
4d9aa155 AM |
1014 | const elfcpp::Rela<size, big_endian>& , |
1015 | unsigned int r_type, | |
1016 | Symbol*) | |
1017 | { | |
1018 | // As above. | |
1019 | if (size == 64) | |
f6971787 AM |
1020 | { |
1021 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1022 | <Powerpc_relobj<size, big_endian>*>(relobj); | |
1023 | if (ppcobj->abiversion() == 1) | |
1024 | return false; | |
1025 | } | |
4d9aa155 AM |
1026 | return !is_branch_reloc(r_type); |
1027 | } | |
21bb3914 | 1028 | |
b3ccdeb5 | 1029 | static bool |
9055360d AM |
1030 | reloc_needs_plt_for_ifunc(Target_powerpc<size, big_endian>* target, |
1031 | Sized_relobj_file<size, big_endian>* object, | |
b3ccdeb5 AM |
1032 | unsigned int r_type, bool report_err); |
1033 | ||
42cacb20 DE |
1034 | private: |
1035 | static void | |
6fa2a40b | 1036 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1037 | unsigned int r_type); |
1038 | ||
1039 | static void | |
6fa2a40b | 1040 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
1041 | unsigned int r_type, Symbol*); |
1042 | ||
1043 | static void | |
1044 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
1045 | Target_powerpc* target); | |
1046 | ||
1047 | void | |
1048 | check_non_pic(Relobj*, unsigned int r_type); | |
1049 | ||
1050 | // Whether we have issued an error about a non-PIC compilation. | |
1051 | bool issued_non_pic_error_; | |
1052 | }; | |
1053 | ||
1611bc4a AM |
1054 | bool |
1055 | symval_for_branch(const Symbol_table* symtab, | |
6c77229c | 1056 | const Sized_symbol<size>* gsym, |
3ea0a085 | 1057 | Powerpc_relobj<size, big_endian>* object, |
1611bc4a | 1058 | Address *value, unsigned int *dest_shndx); |
3ea0a085 | 1059 | |
42cacb20 | 1060 | // The class which implements relocation. |
e3deeb9c | 1061 | class Relocate : protected Track_tls |
42cacb20 DE |
1062 | { |
1063 | public: | |
dd93cd0a AM |
1064 | // Use 'at' branch hints when true, 'y' when false. |
1065 | // FIXME maybe: set this with an option. | |
1066 | static const bool is_isa_v2 = true; | |
1067 | ||
dd93cd0a | 1068 | Relocate() |
e3deeb9c | 1069 | : Track_tls() |
dd93cd0a AM |
1070 | { } |
1071 | ||
42cacb20 DE |
1072 | // Do a relocation. Return false if the caller should not issue |
1073 | // any warnings about this relocation. | |
1074 | inline bool | |
1075 | relocate(const Relocate_info<size, big_endian>*, Target_powerpc*, | |
031cdbed ILT |
1076 | Output_section*, size_t relnum, |
1077 | const elfcpp::Rela<size, big_endian>&, | |
42cacb20 DE |
1078 | unsigned int r_type, const Sized_symbol<size>*, |
1079 | const Symbol_value<size>*, | |
1080 | unsigned char*, | |
1081 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
1082 | section_size_type); | |
42cacb20 DE |
1083 | }; |
1084 | ||
168a4726 AM |
1085 | class Relocate_comdat_behavior |
1086 | { | |
1087 | public: | |
1088 | // Decide what the linker should do for relocations that refer to | |
1089 | // discarded comdat sections. | |
1090 | inline Comdat_behavior | |
1091 | get(const char* name) | |
1092 | { | |
1093 | gold::Default_comdat_behavior default_behavior; | |
1094 | Comdat_behavior ret = default_behavior.get(name); | |
1095 | if (ret == CB_WARNING) | |
1096 | { | |
1097 | if (size == 32 | |
1098 | && (strcmp(name, ".fixup") == 0 | |
1099 | || strcmp(name, ".got2") == 0)) | |
1100 | ret = CB_IGNORE; | |
1101 | if (size == 64 | |
1102 | && (strcmp(name, ".opd") == 0 | |
1103 | || strcmp(name, ".toc") == 0 | |
1104 | || strcmp(name, ".toc1") == 0)) | |
1105 | ret = CB_IGNORE; | |
1106 | } | |
1107 | return ret; | |
1108 | } | |
1109 | }; | |
1110 | ||
42cacb20 DE |
1111 | // A class which returns the size required for a relocation type, |
1112 | // used while scanning relocs during a relocatable link. | |
1113 | class Relocatable_size_for_reloc | |
1114 | { | |
1115 | public: | |
1116 | unsigned int | |
cf43a2fe AM |
1117 | get_size_for_reloc(unsigned int, Relobj*) |
1118 | { | |
1119 | gold_unreachable(); | |
1120 | return 0; | |
1121 | } | |
42cacb20 DE |
1122 | }; |
1123 | ||
dd93cd0a AM |
1124 | // Optimize the TLS relocation type based on what we know about the |
1125 | // symbol. IS_FINAL is true if the final address of this symbol is | |
1126 | // known at link time. | |
1127 | ||
1128 | tls::Tls_optimization | |
1129 | optimize_tls_gd(bool is_final) | |
1130 | { | |
1131 | // If we are generating a shared library, then we can't do anything | |
1132 | // in the linker. | |
1133 | if (parameters->options().shared()) | |
1134 | return tls::TLSOPT_NONE; | |
1135 | ||
1136 | if (!is_final) | |
1137 | return tls::TLSOPT_TO_IE; | |
1138 | return tls::TLSOPT_TO_LE; | |
1139 | } | |
1140 | ||
1141 | tls::Tls_optimization | |
1142 | optimize_tls_ld() | |
1143 | { | |
1144 | if (parameters->options().shared()) | |
1145 | return tls::TLSOPT_NONE; | |
1146 | ||
1147 | return tls::TLSOPT_TO_LE; | |
1148 | } | |
1149 | ||
1150 | tls::Tls_optimization | |
1151 | optimize_tls_ie(bool is_final) | |
1152 | { | |
1153 | if (!is_final || parameters->options().shared()) | |
1154 | return tls::TLSOPT_NONE; | |
1155 | ||
1156 | return tls::TLSOPT_TO_LE; | |
1157 | } | |
cf43a2fe | 1158 | |
cf43a2fe AM |
1159 | // Create glink. |
1160 | void | |
1161 | make_glink_section(Layout*); | |
42cacb20 | 1162 | |
cf43a2fe AM |
1163 | // Create the PLT section. |
1164 | void | |
40b469d7 | 1165 | make_plt_section(Symbol_table*, Layout*); |
42cacb20 | 1166 | |
e5d5f5ed | 1167 | void |
40b469d7 | 1168 | make_iplt_section(Symbol_table*, Layout*); |
e5d5f5ed | 1169 | |
ec661b9d AM |
1170 | void |
1171 | make_brlt_section(Layout*); | |
1172 | ||
42cacb20 DE |
1173 | // Create a PLT entry for a global symbol. |
1174 | void | |
ec661b9d | 1175 | make_plt_entry(Symbol_table*, Layout*, Symbol*); |
e5d5f5ed AM |
1176 | |
1177 | // Create a PLT entry for a local IFUNC symbol. | |
1178 | void | |
40b469d7 | 1179 | make_local_ifunc_plt_entry(Symbol_table*, Layout*, |
ec661b9d AM |
1180 | Sized_relobj_file<size, big_endian>*, |
1181 | unsigned int); | |
1182 | ||
42cacb20 | 1183 | |
dd93cd0a AM |
1184 | // Create a GOT entry for local dynamic __tls_get_addr. |
1185 | unsigned int | |
1186 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
1187 | Sized_relobj_file<size, big_endian>* object); | |
1188 | ||
42cacb20 | 1189 | unsigned int |
dd93cd0a AM |
1190 | tlsld_got_offset() const |
1191 | { | |
1192 | return this->tlsld_got_offset_; | |
1193 | } | |
42cacb20 | 1194 | |
42cacb20 DE |
1195 | // Get the dynamic reloc section, creating it if necessary. |
1196 | Reloc_section* | |
1197 | rela_dyn_section(Layout*); | |
1198 | ||
b3ccdeb5 AM |
1199 | // Similarly, but for ifunc symbols get the one for ifunc. |
1200 | Reloc_section* | |
1201 | rela_dyn_section(Symbol_table*, Layout*, bool for_ifunc); | |
1202 | ||
42cacb20 DE |
1203 | // Copy a relocation against a global symbol. |
1204 | void | |
ef9beddf | 1205 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 1206 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
1207 | unsigned int shndx, Output_section* output_section, |
1208 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
1209 | { | |
1210 | this->copy_relocs_.copy_reloc(symtab, layout, | |
1211 | symtab->get_sized_symbol<size>(sym), | |
1212 | object, shndx, output_section, | |
1213 | reloc, this->rela_dyn_section(layout)); | |
1214 | } | |
1215 | ||
0cfdc767 | 1216 | // Look over all the input sections, deciding where to place stubs. |
ec661b9d | 1217 | void |
a3e60ddb | 1218 | group_sections(Layout*, const Task*, bool); |
ec661b9d AM |
1219 | |
1220 | // Sort output sections by address. | |
1221 | struct Sort_sections | |
1222 | { | |
1223 | bool | |
1224 | operator()(const Output_section* sec1, const Output_section* sec2) | |
1225 | { return sec1->address() < sec2->address(); } | |
1226 | }; | |
1227 | ||
1228 | class Branch_info | |
1229 | { | |
1230 | public: | |
1231 | Branch_info(Powerpc_relobj<size, big_endian>* ppc_object, | |
1232 | unsigned int data_shndx, | |
1233 | Address r_offset, | |
1234 | unsigned int r_type, | |
1235 | unsigned int r_sym, | |
1236 | Address addend) | |
1237 | : object_(ppc_object), shndx_(data_shndx), offset_(r_offset), | |
1238 | r_type_(r_type), r_sym_(r_sym), addend_(addend) | |
1239 | { } | |
1240 | ||
1241 | ~Branch_info() | |
1242 | { } | |
1243 | ||
1244 | // If this branch needs a plt call stub, or a long branch stub, make one. | |
a3e60ddb | 1245 | bool |
ec661b9d AM |
1246 | make_stub(Stub_table<size, big_endian>*, |
1247 | Stub_table<size, big_endian>*, | |
1248 | Symbol_table*) const; | |
1249 | ||
1250 | private: | |
1251 | // The branch location.. | |
1252 | Powerpc_relobj<size, big_endian>* object_; | |
1253 | unsigned int shndx_; | |
1254 | Address offset_; | |
1255 | // ..and the branch type and destination. | |
1256 | unsigned int r_type_; | |
1257 | unsigned int r_sym_; | |
1258 | Address addend_; | |
1259 | }; | |
1260 | ||
42cacb20 DE |
1261 | // Information about this specific target which we pass to the |
1262 | // general Target structure. | |
1263 | static Target::Target_info powerpc_info; | |
1264 | ||
1265 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
1266 | // These values are exposed to the ABI in an incremental link. |
1267 | // Do not renumber existing values without changing the version | |
1268 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
1269 | enum Got_type |
1270 | { | |
dd93cd0a AM |
1271 | GOT_TYPE_STANDARD, |
1272 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
1273 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
1274 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
1275 | }; |
1276 | ||
ec661b9d | 1277 | // The GOT section. |
cf43a2fe | 1278 | Output_data_got_powerpc<size, big_endian>* got_; |
b3ccdeb5 AM |
1279 | // The PLT section. This is a container for a table of addresses, |
1280 | // and their relocations. Each address in the PLT has a dynamic | |
1281 | // relocation (R_*_JMP_SLOT) and each address will have a | |
1282 | // corresponding entry in .glink for lazy resolution of the PLT. | |
1283 | // ppc32 initialises the PLT to point at the .glink entry, while | |
1284 | // ppc64 leaves this to ld.so. To make a call via the PLT, the | |
1285 | // linker adds a stub that loads the PLT entry into ctr then | |
1286 | // branches to ctr. There may be more than one stub for each PLT | |
1287 | // entry. DT_JMPREL points at the first PLT dynamic relocation and | |
1288 | // DT_PLTRELSZ gives the total size of PLT dynamic relocations. | |
42cacb20 | 1289 | Output_data_plt_powerpc<size, big_endian>* plt_; |
b3ccdeb5 AM |
1290 | // The IPLT section. Like plt_, this is a container for a table of |
1291 | // addresses and their relocations, specifically for STT_GNU_IFUNC | |
1292 | // functions that resolve locally (STT_GNU_IFUNC functions that | |
1293 | // don't resolve locally go in PLT). Unlike plt_, these have no | |
1294 | // entry in .glink for lazy resolution, and the relocation section | |
1295 | // does not have a 1-1 correspondence with IPLT addresses. In fact, | |
1296 | // the relocation section may contain relocations against | |
1297 | // STT_GNU_IFUNC symbols at locations outside of IPLT. The | |
1298 | // relocation section will appear at the end of other dynamic | |
1299 | // relocations, so that ld.so applies these relocations after other | |
1300 | // dynamic relocations. In a static executable, the relocation | |
1301 | // section is emitted and marked with __rela_iplt_start and | |
1302 | // __rela_iplt_end symbols. | |
e5d5f5ed | 1303 | Output_data_plt_powerpc<size, big_endian>* iplt_; |
ec661b9d AM |
1304 | // Section holding long branch destinations. |
1305 | Output_data_brlt_powerpc<size, big_endian>* brlt_section_; | |
1306 | // The .glink section. | |
cf43a2fe | 1307 | Output_data_glink<size, big_endian>* glink_; |
ec661b9d | 1308 | // The dynamic reloc section. |
42cacb20 DE |
1309 | Reloc_section* rela_dyn_; |
1310 | // Relocs saved to avoid a COPY reloc. | |
1311 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
dd93cd0a AM |
1312 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
1313 | unsigned int tlsld_got_offset_; | |
ec661b9d AM |
1314 | |
1315 | Stub_tables stub_tables_; | |
1316 | typedef Unordered_map<Address, unsigned int> Branch_lookup_table; | |
1317 | Branch_lookup_table branch_lookup_table_; | |
1318 | ||
1319 | typedef std::vector<Branch_info> Branches; | |
1320 | Branches branch_info_; | |
9e69ed50 AM |
1321 | |
1322 | bool plt_thread_safe_; | |
a3e60ddb AM |
1323 | |
1324 | bool relax_failed_; | |
1325 | int relax_fail_count_; | |
1326 | int32_t stub_group_size_; | |
d49044c7 AM |
1327 | |
1328 | Output_data_save_res<size, big_endian> *savres_section_; | |
42cacb20 DE |
1329 | }; |
1330 | ||
1331 | template<> | |
1332 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
1333 | { | |
1334 | 32, // size | |
1335 | true, // is_big_endian | |
1336 | elfcpp::EM_PPC, // machine_code | |
1337 | false, // has_make_symbol | |
1338 | false, // has_resolve | |
1339 | false, // has_code_fill | |
1340 | true, // is_default_stack_executable | |
b3ce541e | 1341 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1342 | '\0', // wrap_char |
1343 | "/usr/lib/ld.so.1", // dynamic_linker | |
1344 | 0x10000000, // default_text_segment_address | |
1345 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1346 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1347 | false, // isolate_execinstr |
1348 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1349 | elfcpp::SHN_UNDEF, // small_common_shndx |
1350 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1351 | 0, // small_common_section_flags | |
05a352e6 DK |
1352 | 0, // large_common_section_flags |
1353 | NULL, // attributes_section | |
a67858e0 CC |
1354 | NULL, // attributes_vendor |
1355 | "_start" // entry_symbol_name | |
42cacb20 DE |
1356 | }; |
1357 | ||
1358 | template<> | |
1359 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
1360 | { | |
1361 | 32, // size | |
1362 | false, // is_big_endian | |
1363 | elfcpp::EM_PPC, // machine_code | |
1364 | false, // has_make_symbol | |
1365 | false, // has_resolve | |
1366 | false, // has_code_fill | |
1367 | true, // is_default_stack_executable | |
b3ce541e | 1368 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1369 | '\0', // wrap_char |
1370 | "/usr/lib/ld.so.1", // dynamic_linker | |
1371 | 0x10000000, // default_text_segment_address | |
1372 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 1373 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1374 | false, // isolate_execinstr |
1375 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1376 | elfcpp::SHN_UNDEF, // small_common_shndx |
1377 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1378 | 0, // small_common_section_flags | |
05a352e6 DK |
1379 | 0, // large_common_section_flags |
1380 | NULL, // attributes_section | |
a67858e0 CC |
1381 | NULL, // attributes_vendor |
1382 | "_start" // entry_symbol_name | |
42cacb20 DE |
1383 | }; |
1384 | ||
1385 | template<> | |
1386 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
1387 | { | |
1388 | 64, // size | |
1389 | true, // is_big_endian | |
1390 | elfcpp::EM_PPC64, // machine_code | |
1391 | false, // has_make_symbol | |
1392 | false, // has_resolve | |
1393 | false, // has_code_fill | |
1394 | true, // is_default_stack_executable | |
b3ce541e | 1395 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1396 | '\0', // wrap_char |
1397 | "/usr/lib/ld.so.1", // dynamic_linker | |
1398 | 0x10000000, // default_text_segment_address | |
1399 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1400 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1401 | false, // isolate_execinstr |
1402 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1403 | elfcpp::SHN_UNDEF, // small_common_shndx |
1404 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1405 | 0, // small_common_section_flags | |
05a352e6 DK |
1406 | 0, // large_common_section_flags |
1407 | NULL, // attributes_section | |
a67858e0 CC |
1408 | NULL, // attributes_vendor |
1409 | "_start" // entry_symbol_name | |
42cacb20 DE |
1410 | }; |
1411 | ||
1412 | template<> | |
1413 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
1414 | { | |
1415 | 64, // size | |
1416 | false, // is_big_endian | |
1417 | elfcpp::EM_PPC64, // machine_code | |
1418 | false, // has_make_symbol | |
1419 | false, // has_resolve | |
1420 | false, // has_code_fill | |
1421 | true, // is_default_stack_executable | |
b3ce541e | 1422 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
1423 | '\0', // wrap_char |
1424 | "/usr/lib/ld.so.1", // dynamic_linker | |
1425 | 0x10000000, // default_text_segment_address | |
1426 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 1427 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
1428 | false, // isolate_execinstr |
1429 | 0, // rosegment_gap | |
8a5e3e08 ILT |
1430 | elfcpp::SHN_UNDEF, // small_common_shndx |
1431 | elfcpp::SHN_UNDEF, // large_common_shndx | |
1432 | 0, // small_common_section_flags | |
05a352e6 DK |
1433 | 0, // large_common_section_flags |
1434 | NULL, // attributes_section | |
a67858e0 CC |
1435 | NULL, // attributes_vendor |
1436 | "_start" // entry_symbol_name | |
42cacb20 DE |
1437 | }; |
1438 | ||
dd93cd0a AM |
1439 | inline bool |
1440 | is_branch_reloc(unsigned int r_type) | |
1441 | { | |
1442 | return (r_type == elfcpp::R_POWERPC_REL24 | |
1443 | || r_type == elfcpp::R_PPC_PLTREL24 | |
1444 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
1445 | || r_type == elfcpp::R_POWERPC_REL14 | |
1446 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
1447 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
1448 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
1449 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
1450 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
1451 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
1452 | } | |
1453 | ||
1454 | // If INSN is an opcode that may be used with an @tls operand, return | |
1455 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
1456 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
1457 | uint32_t | |
1458 | at_tls_transform(uint32_t insn, unsigned int reg) | |
1459 | { | |
1460 | if ((insn & (0x3f << 26)) != 31 << 26) | |
1461 | return 0; | |
1462 | ||
1463 | unsigned int rtra; | |
1464 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
1465 | rtra = insn & ((1 << 26) - (1 << 16)); | |
1466 | else if (((insn >> 16) & 0x1f) == reg) | |
1467 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
1468 | else | |
1469 | return 0; | |
1470 | ||
1471 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
1472 | // add -> addi | |
1473 | insn = 14 << 26; | |
1474 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
1475 | && ((insn & (0x1f << 6)) < 14 << 6 | |
1476 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
1477 | && (insn & (0x1f << 6)) < 24 << 6))) | |
1478 | // load and store indexed -> dform | |
1479 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
1480 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
1481 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
1482 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
1483 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
1484 | // lwax -> lwa | |
1485 | insn = (58 << 26) | 2; | |
1486 | else | |
1487 | return 0; | |
1488 | insn |= rtra; | |
1489 | return insn; | |
1490 | } | |
1491 | ||
dd93cd0a | 1492 | |
42cacb20 DE |
1493 | template<int size, bool big_endian> |
1494 | class Powerpc_relocate_functions | |
1495 | { | |
dd93cd0a | 1496 | public: |
f4baf0d4 | 1497 | enum Overflow_check |
dd93cd0a | 1498 | { |
f4baf0d4 AM |
1499 | CHECK_NONE, |
1500 | CHECK_SIGNED, | |
b80eed39 AM |
1501 | CHECK_UNSIGNED, |
1502 | CHECK_BITFIELD, | |
1503 | CHECK_LOW_INSN, | |
1504 | CHECK_HIGH_INSN | |
dd93cd0a AM |
1505 | }; |
1506 | ||
f4baf0d4 | 1507 | enum Status |
dd93cd0a | 1508 | { |
f4baf0d4 AM |
1509 | STATUS_OK, |
1510 | STATUS_OVERFLOW | |
1511 | }; | |
dd93cd0a | 1512 | |
42cacb20 | 1513 | private: |
c9269dff | 1514 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff AM |
1515 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1516 | ||
dd93cd0a AM |
1517 | template<int valsize> |
1518 | static inline bool | |
1519 | has_overflow_signed(Address value) | |
1520 | { | |
1521 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
1522 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1523 | limit <<= ((valsize - 1) >> 1); | |
1524 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
1525 | return value + limit > (limit << 1) - 1; | |
1526 | } | |
1527 | ||
1528 | template<int valsize> | |
1529 | static inline bool | |
b80eed39 | 1530 | has_overflow_unsigned(Address value) |
dd93cd0a AM |
1531 | { |
1532 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
1533 | limit <<= ((valsize - 1) >> 1); | |
1534 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
b80eed39 AM |
1535 | return value > (limit << 1) - 1; |
1536 | } | |
1537 | ||
1538 | template<int valsize> | |
1539 | static inline bool | |
1540 | has_overflow_bitfield(Address value) | |
1541 | { | |
1542 | return (has_overflow_unsigned<valsize>(value) | |
1543 | && has_overflow_signed<valsize>(value)); | |
dd93cd0a AM |
1544 | } |
1545 | ||
1546 | template<int valsize> | |
f4baf0d4 AM |
1547 | static inline Status |
1548 | overflowed(Address value, Overflow_check overflow) | |
dd93cd0a | 1549 | { |
f4baf0d4 | 1550 | if (overflow == CHECK_SIGNED) |
dd93cd0a AM |
1551 | { |
1552 | if (has_overflow_signed<valsize>(value)) | |
f4baf0d4 | 1553 | return STATUS_OVERFLOW; |
dd93cd0a | 1554 | } |
b80eed39 AM |
1555 | else if (overflow == CHECK_UNSIGNED) |
1556 | { | |
1557 | if (has_overflow_unsigned<valsize>(value)) | |
1558 | return STATUS_OVERFLOW; | |
1559 | } | |
f4baf0d4 | 1560 | else if (overflow == CHECK_BITFIELD) |
dd93cd0a AM |
1561 | { |
1562 | if (has_overflow_bitfield<valsize>(value)) | |
f4baf0d4 | 1563 | return STATUS_OVERFLOW; |
dd93cd0a | 1564 | } |
f4baf0d4 | 1565 | return STATUS_OK; |
dd93cd0a AM |
1566 | } |
1567 | ||
cf43a2fe | 1568 | // Do a simple RELA relocation |
0cfb0717 | 1569 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1570 | static inline Status |
1571 | rela(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1572 | { |
0cfb0717 | 1573 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
dd93cd0a | 1574 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1575 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, value); |
dd93cd0a AM |
1576 | return overflowed<valsize>(value, overflow); |
1577 | } | |
1578 | ||
0cfb0717 | 1579 | template<int fieldsize, int valsize> |
f4baf0d4 | 1580 | static inline Status |
42cacb20 DE |
1581 | rela(unsigned char* view, |
1582 | unsigned int right_shift, | |
0cfb0717 | 1583 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1584 | Address value, |
f4baf0d4 | 1585 | Overflow_check overflow) |
42cacb20 | 1586 | { |
0cfb0717 | 1587 | typedef typename elfcpp::Swap<fieldsize, big_endian>::Valtype Valtype; |
42cacb20 | 1588 | Valtype* wv = reinterpret_cast<Valtype*>(view); |
0cfb0717 | 1589 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(wv); |
dd93cd0a | 1590 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1591 | val &= ~dst_mask; |
1592 | reloc &= dst_mask; | |
0cfb0717 | 1593 | elfcpp::Swap<fieldsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 1594 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1595 | } |
1596 | ||
cf43a2fe | 1597 | // Do a simple RELA relocation, unaligned. |
0cfb0717 | 1598 | template<int fieldsize, int valsize> |
f4baf0d4 AM |
1599 | static inline Status |
1600 | rela_ua(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1601 | { |
0cfb0717 | 1602 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, value); |
dd93cd0a AM |
1603 | return overflowed<valsize>(value, overflow); |
1604 | } | |
1605 | ||
0cfb0717 | 1606 | template<int fieldsize, int valsize> |
f4baf0d4 | 1607 | static inline Status |
cf43a2fe AM |
1608 | rela_ua(unsigned char* view, |
1609 | unsigned int right_shift, | |
0cfb0717 | 1610 | typename elfcpp::Valtype_base<fieldsize>::Valtype dst_mask, |
c9269dff | 1611 | Address value, |
f4baf0d4 | 1612 | Overflow_check overflow) |
42cacb20 | 1613 | { |
0cfb0717 | 1614 | typedef typename elfcpp::Swap_unaligned<fieldsize, big_endian>::Valtype |
c9269dff | 1615 | Valtype; |
0cfb0717 | 1616 | Valtype val = elfcpp::Swap<fieldsize, big_endian>::readval(view); |
dd93cd0a | 1617 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
1618 | val &= ~dst_mask; |
1619 | reloc &= dst_mask; | |
0cfb0717 | 1620 | elfcpp::Swap_unaligned<fieldsize, big_endian>::writeval(view, val | reloc); |
dd93cd0a | 1621 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
1622 | } |
1623 | ||
42cacb20 | 1624 | public: |
dd93cd0a | 1625 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 1626 | static inline void |
dd93cd0a | 1627 | addr64(unsigned char* view, Address value) |
0cfb0717 | 1628 | { This::template rela<64,64>(view, value, CHECK_NONE); } |
42cacb20 | 1629 | |
dd93cd0a | 1630 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 1631 | static inline void |
dd93cd0a | 1632 | addr64_u(unsigned char* view, Address value) |
0cfb0717 | 1633 | { This::template rela_ua<64,64>(view, value, CHECK_NONE); } |
dd93cd0a AM |
1634 | |
1635 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
f4baf0d4 AM |
1636 | static inline Status |
1637 | addr32(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1638 | { return This::template rela<32,32>(view, value, overflow); } |
dd93cd0a AM |
1639 | |
1640 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
f4baf0d4 AM |
1641 | static inline Status |
1642 | addr32_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1643 | { return This::template rela_ua<32,32>(view, value, overflow); } |
dd93cd0a AM |
1644 | |
1645 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
f4baf0d4 AM |
1646 | static inline Status |
1647 | addr24(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1648 | { |
0cfb0717 AM |
1649 | Status stat = This::template rela<32,26>(view, 0, 0x03fffffc, |
1650 | value, overflow); | |
f4baf0d4 AM |
1651 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1652 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1653 | return stat; |
1654 | } | |
42cacb20 DE |
1655 | |
1656 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
f4baf0d4 AM |
1657 | static inline Status |
1658 | addr16(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1659 | { return This::template rela<16,16>(view, value, overflow); } |
42cacb20 | 1660 | |
dd93cd0a | 1661 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
f4baf0d4 AM |
1662 | static inline Status |
1663 | addr16_u(unsigned char* view, Address value, Overflow_check overflow) | |
0cfb0717 | 1664 | { return This::template rela_ua<16,16>(view, value, overflow); } |
42cacb20 | 1665 | |
dd93cd0a | 1666 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
f4baf0d4 AM |
1667 | static inline Status |
1668 | addr16_ds(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1669 | { |
0cfb0717 | 1670 | Status stat = This::template rela<16,16>(view, 0, 0xfffc, value, overflow); |
ec86f434 | 1671 | if ((value & 3) != 0) |
f4baf0d4 | 1672 | stat = STATUS_OVERFLOW; |
dd93cd0a AM |
1673 | return stat; |
1674 | } | |
42cacb20 | 1675 | |
42cacb20 DE |
1676 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1677 | static inline void | |
dd93cd0a | 1678 | addr16_hi(unsigned char* view, Address value) |
0cfb0717 | 1679 | { This::template rela<16,16>(view, 16, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1680 | |
c9269dff | 1681 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1682 | static inline void |
dd93cd0a AM |
1683 | addr16_ha(unsigned char* view, Address value) |
1684 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1685 | |
dd93cd0a | 1686 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1687 | static inline void |
dd93cd0a | 1688 | addr16_hi2(unsigned char* view, Address value) |
0cfb0717 | 1689 | { This::template rela<16,16>(view, 32, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1690 | |
dd93cd0a | 1691 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1692 | static inline void |
dd93cd0a AM |
1693 | addr16_ha2(unsigned char* view, Address value) |
1694 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1695 | |
dd93cd0a | 1696 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1697 | static inline void |
dd93cd0a | 1698 | addr16_hi3(unsigned char* view, Address value) |
0cfb0717 | 1699 | { This::template rela<16,16>(view, 48, 0xffff, value, CHECK_NONE); } |
42cacb20 | 1700 | |
dd93cd0a | 1701 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1702 | static inline void |
dd93cd0a AM |
1703 | addr16_ha3(unsigned char* view, Address value) |
1704 | { This::addr16_hi3(view, value + 0x8000); } | |
1705 | ||
1706 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
f4baf0d4 AM |
1707 | static inline Status |
1708 | addr14(unsigned char* view, Address value, Overflow_check overflow) | |
dd93cd0a | 1709 | { |
0cfb0717 | 1710 | Status stat = This::template rela<32,16>(view, 0, 0xfffc, value, overflow); |
f4baf0d4 AM |
1711 | if (overflow != CHECK_NONE && (value & 3) != 0) |
1712 | stat = STATUS_OVERFLOW; | |
dd93cd0a AM |
1713 | return stat; |
1714 | } | |
cf43a2fe AM |
1715 | }; |
1716 | ||
b4f7960d AM |
1717 | // Set ABI version for input and output. |
1718 | ||
1719 | template<int size, bool big_endian> | |
1720 | void | |
1721 | Powerpc_relobj<size, big_endian>::set_abiversion(int ver) | |
1722 | { | |
1723 | this->e_flags_ |= ver; | |
1724 | if (this->abiversion() != 0) | |
1725 | { | |
1726 | Target_powerpc<size, big_endian>* target = | |
1727 | static_cast<Target_powerpc<size, big_endian>*>( | |
1728 | parameters->sized_target<size, big_endian>()); | |
1729 | if (target->abiversion() == 0) | |
1730 | target->set_abiversion(this->abiversion()); | |
1731 | else if (target->abiversion() != this->abiversion()) | |
1732 | gold_error(_("%s: ABI version %d is not compatible " | |
1733 | "with ABI version %d output"), | |
1734 | this->name().c_str(), | |
1735 | this->abiversion(), target->abiversion()); | |
1736 | ||
1737 | } | |
1738 | } | |
1739 | ||
c9269dff AM |
1740 | // Stash away the index of .got2 or .opd in a relocatable object, if |
1741 | // such a section exists. | |
cf43a2fe AM |
1742 | |
1743 | template<int size, bool big_endian> | |
1744 | bool | |
1745 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1746 | Read_symbols_data* sd) | |
1747 | { | |
c9269dff AM |
1748 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1749 | const unsigned char* namesu = sd->section_names->data(); | |
1750 | const char* names = reinterpret_cast<const char*>(namesu); | |
1751 | section_size_type names_size = sd->section_names_size; | |
1752 | const unsigned char* s; | |
1753 | ||
dc3714f3 AM |
1754 | s = this->template find_shdr<size, big_endian>(pshdrs, |
1755 | size == 32 ? ".got2" : ".opd", | |
1756 | names, names_size, NULL); | |
c9269dff AM |
1757 | if (s != NULL) |
1758 | { | |
1759 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1760 | this->special_ = ndx; | |
b4f7960d AM |
1761 | if (size == 64) |
1762 | { | |
1763 | if (this->abiversion() == 0) | |
1764 | this->set_abiversion(1); | |
1765 | else if (this->abiversion() > 1) | |
1766 | gold_error(_("%s: .opd invalid in abiv%d"), | |
1767 | this->name().c_str(), this->abiversion()); | |
1768 | } | |
c9269dff AM |
1769 | } |
1770 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); | |
1771 | } | |
1772 | ||
1773 | // Examine .rela.opd to build info about function entry points. | |
1774 | ||
1775 | template<int size, bool big_endian> | |
1776 | void | |
1777 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
1778 | size_t reloc_count, | |
1779 | const unsigned char* prelocs, | |
1780 | const unsigned char* plocal_syms) | |
1781 | { | |
1782 | if (size == 64) | |
cf43a2fe | 1783 | { |
c9269dff AM |
1784 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
1785 | Reltype; | |
1786 | const int reloc_size | |
1787 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
1788 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
ec4dbad3 AM |
1789 | Address expected_off = 0; |
1790 | bool regular = true; | |
1791 | unsigned int opd_ent_size = 0; | |
c9269dff AM |
1792 | |
1793 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 1794 | { |
c9269dff AM |
1795 | Reltype reloc(prelocs); |
1796 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
1797 | = reloc.get_r_info(); | |
1798 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
1799 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
1800 | { | |
1801 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1802 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
1803 | bool is_ordinary; | |
1804 | unsigned int shndx; | |
1805 | if (r_sym < this->local_symbol_count()) | |
1806 | { | |
1807 | typename elfcpp::Sym<size, big_endian> | |
1808 | lsym(plocal_syms + r_sym * sym_size); | |
1809 | shndx = lsym.get_st_shndx(); | |
1810 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1811 | value = lsym.get_st_value(); | |
1812 | } | |
1813 | else | |
1814 | shndx = this->symbol_section_and_value(r_sym, &value, | |
1815 | &is_ordinary); | |
1816 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
1817 | value + reloc.get_r_addend()); | |
ec4dbad3 AM |
1818 | if (i == 2) |
1819 | { | |
1820 | expected_off = reloc.get_r_offset(); | |
1821 | opd_ent_size = expected_off; | |
1822 | } | |
1823 | else if (expected_off != reloc.get_r_offset()) | |
1824 | regular = false; | |
1825 | expected_off += opd_ent_size; | |
1826 | } | |
1827 | else if (r_type == elfcpp::R_PPC64_TOC) | |
1828 | { | |
1829 | if (expected_off - opd_ent_size + 8 != reloc.get_r_offset()) | |
1830 | regular = false; | |
1831 | } | |
1832 | else | |
1833 | { | |
1834 | gold_warning(_("%s: unexpected reloc type %u in .opd section"), | |
1835 | this->name().c_str(), r_type); | |
1836 | regular = false; | |
c9269dff AM |
1837 | } |
1838 | } | |
ec4dbad3 AM |
1839 | if (reloc_count <= 2) |
1840 | opd_ent_size = this->section_size(this->opd_shndx()); | |
1841 | if (opd_ent_size != 24 && opd_ent_size != 16) | |
1842 | regular = false; | |
1843 | if (!regular) | |
1844 | { | |
1845 | gold_warning(_("%s: .opd is not a regular array of opd entries"), | |
1846 | this->name().c_str()); | |
1847 | opd_ent_size = 0; | |
1848 | } | |
c9269dff AM |
1849 | } |
1850 | } | |
1851 | ||
1852 | template<int size, bool big_endian> | |
1853 | void | |
1854 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
1855 | { | |
1856 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
1857 | if (size == 64) | |
1858 | { | |
1859 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
1860 | p != rd->relocs.end(); | |
1861 | ++p) | |
1862 | { | |
1863 | if (p->data_shndx == this->opd_shndx()) | |
1864 | { | |
ec4dbad3 AM |
1865 | uint64_t opd_size = this->section_size(this->opd_shndx()); |
1866 | gold_assert(opd_size == static_cast<size_t>(opd_size)); | |
1867 | if (opd_size != 0) | |
1868 | { | |
1869 | this->init_opd(opd_size); | |
1870 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
1871 | rd->local_symbols->data()); | |
1872 | } | |
c9269dff AM |
1873 | break; |
1874 | } | |
cf43a2fe AM |
1875 | } |
1876 | } | |
cf43a2fe AM |
1877 | } |
1878 | ||
b4f7960d AM |
1879 | // Read the symbols then set up st_other vector. |
1880 | ||
1881 | template<int size, bool big_endian> | |
1882 | void | |
1883 | Powerpc_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1884 | { | |
f35c4853 | 1885 | this->base_read_symbols(sd); |
b4f7960d AM |
1886 | if (size == 64) |
1887 | { | |
1888 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1889 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1890 | const unsigned int loccount = this->do_local_symbol_count(); | |
1891 | if (loccount != 0) | |
1892 | { | |
1893 | this->st_other_.resize(loccount); | |
1894 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1895 | off_t locsize = loccount * sym_size; | |
1896 | const unsigned int symtab_shndx = this->symtab_shndx(); | |
1897 | const unsigned char *psymtab = pshdrs + symtab_shndx * shdr_size; | |
1898 | typename elfcpp::Shdr<size, big_endian> shdr(psymtab); | |
1899 | const unsigned char* psyms = this->get_view(shdr.get_sh_offset(), | |
1900 | locsize, true, false); | |
1901 | psyms += sym_size; | |
1902 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) | |
1903 | { | |
1904 | elfcpp::Sym<size, big_endian> sym(psyms); | |
1905 | unsigned char st_other = sym.get_st_other(); | |
1906 | this->st_other_[i] = st_other; | |
1907 | if ((st_other & elfcpp::STO_PPC64_LOCAL_MASK) != 0) | |
1908 | { | |
1909 | if (this->abiversion() == 0) | |
1910 | this->set_abiversion(2); | |
1911 | else if (this->abiversion() < 2) | |
1912 | gold_error(_("%s: local symbol %d has invalid st_other" | |
1913 | " for ABI version 1"), | |
1914 | this->name().c_str(), i); | |
1915 | } | |
1916 | } | |
1917 | } | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | template<int size, bool big_endian> | |
1922 | void | |
1923 | Powerpc_dynobj<size, big_endian>::set_abiversion(int ver) | |
1924 | { | |
1925 | this->e_flags_ |= ver; | |
1926 | if (this->abiversion() != 0) | |
1927 | { | |
1928 | Target_powerpc<size, big_endian>* target = | |
1929 | static_cast<Target_powerpc<size, big_endian>*>( | |
1930 | parameters->sized_target<size, big_endian>()); | |
1931 | if (target->abiversion() == 0) | |
1932 | target->set_abiversion(this->abiversion()); | |
1933 | else if (target->abiversion() != this->abiversion()) | |
1934 | gold_error(_("%s: ABI version %d is not compatible " | |
1935 | "with ABI version %d output"), | |
1936 | this->name().c_str(), | |
1937 | this->abiversion(), target->abiversion()); | |
1938 | ||
1939 | } | |
1940 | } | |
1941 | ||
f35c4853 | 1942 | // Call Sized_dynobj::base_read_symbols to read the symbols then |
dc3714f3 AM |
1943 | // read .opd from a dynamic object, filling in opd_ent_ vector, |
1944 | ||
1945 | template<int size, bool big_endian> | |
1946 | void | |
1947 | Powerpc_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) | |
1948 | { | |
f35c4853 | 1949 | this->base_read_symbols(sd); |
dc3714f3 AM |
1950 | if (size == 64) |
1951 | { | |
1952 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
1953 | const unsigned char* const pshdrs = sd->section_headers->data(); | |
1954 | const unsigned char* namesu = sd->section_names->data(); | |
1955 | const char* names = reinterpret_cast<const char*>(namesu); | |
1956 | const unsigned char* s = NULL; | |
1957 | const unsigned char* opd; | |
1958 | section_size_type opd_size; | |
1959 | ||
1960 | // Find and read .opd section. | |
1961 | while (1) | |
1962 | { | |
1963 | s = this->template find_shdr<size, big_endian>(pshdrs, ".opd", names, | |
1964 | sd->section_names_size, | |
1965 | s); | |
1966 | if (s == NULL) | |
1967 | return; | |
1968 | ||
1969 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
1970 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
1971 | && (shdr.get_sh_flags() & elfcpp::SHF_ALLOC) != 0) | |
1972 | { | |
b4f7960d AM |
1973 | if (this->abiversion() == 0) |
1974 | this->set_abiversion(1); | |
1975 | else if (this->abiversion() > 1) | |
1976 | gold_error(_("%s: .opd invalid in abiv%d"), | |
1977 | this->name().c_str(), this->abiversion()); | |
1978 | ||
dc3714f3 AM |
1979 | this->opd_shndx_ = (s - pshdrs) / shdr_size; |
1980 | this->opd_address_ = shdr.get_sh_addr(); | |
1981 | opd_size = convert_to_section_size_type(shdr.get_sh_size()); | |
1982 | opd = this->get_view(shdr.get_sh_offset(), opd_size, | |
1983 | true, false); | |
1984 | break; | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | // Build set of executable sections. | |
1989 | // Using a set is probably overkill. There is likely to be only | |
1990 | // a few executable sections, typically .init, .text and .fini, | |
1991 | // and they are generally grouped together. | |
1992 | typedef std::set<Sec_info> Exec_sections; | |
1993 | Exec_sections exec_sections; | |
1994 | s = pshdrs; | |
1995 | for (unsigned int i = 1; i < this->shnum(); ++i, s += shdr_size) | |
1996 | { | |
1997 | typename elfcpp::Shdr<size, big_endian> shdr(s); | |
1998 | if (shdr.get_sh_type() == elfcpp::SHT_PROGBITS | |
1999 | && ((shdr.get_sh_flags() | |
2000 | & (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2001 | == (elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR)) | |
2002 | && shdr.get_sh_size() != 0) | |
2003 | { | |
2004 | exec_sections.insert(Sec_info(shdr.get_sh_addr(), | |
2005 | shdr.get_sh_size(), i)); | |
2006 | } | |
2007 | } | |
2008 | if (exec_sections.empty()) | |
2009 | return; | |
2010 | ||
2011 | // Look over the OPD entries. This is complicated by the fact | |
2012 | // that some binaries will use two-word entries while others | |
2013 | // will use the standard three-word entries. In most cases | |
2014 | // the third word (the environment pointer for languages like | |
2015 | // Pascal) is unused and will be zero. If the third word is | |
2016 | // used it should not be pointing into executable sections, | |
2017 | // I think. | |
2018 | this->init_opd(opd_size); | |
2019 | for (const unsigned char* p = opd; p < opd + opd_size; p += 8) | |
2020 | { | |
2021 | typedef typename elfcpp::Swap<64, big_endian>::Valtype Valtype; | |
2022 | const Valtype* valp = reinterpret_cast<const Valtype*>(p); | |
2023 | Valtype val = elfcpp::Swap<64, big_endian>::readval(valp); | |
2024 | if (val == 0) | |
2025 | // Chances are that this is the third word of an OPD entry. | |
2026 | continue; | |
2027 | typename Exec_sections::const_iterator e | |
2028 | = exec_sections.upper_bound(Sec_info(val, 0, 0)); | |
2029 | if (e != exec_sections.begin()) | |
2030 | { | |
2031 | --e; | |
2032 | if (e->start <= val && val < e->start + e->len) | |
2033 | { | |
2034 | // We have an address in an executable section. | |
2035 | // VAL ought to be the function entry, set it up. | |
2036 | this->set_opd_ent(p - opd, e->shndx, val); | |
2037 | // Skip second word of OPD entry, the TOC pointer. | |
2038 | p += 8; | |
2039 | } | |
2040 | } | |
2041 | // If we didn't match any executable sections, we likely | |
2042 | // have a non-zero third word in the OPD entry. | |
2043 | } | |
2044 | } | |
2045 | } | |
2046 | ||
f43ba157 | 2047 | // Set up some symbols. |
26a4e9cb AM |
2048 | |
2049 | template<int size, bool big_endian> | |
2050 | void | |
f43ba157 AM |
2051 | Target_powerpc<size, big_endian>::do_define_standard_symbols( |
2052 | Symbol_table* symtab, | |
2053 | Layout* layout) | |
26a4e9cb AM |
2054 | { |
2055 | if (size == 32) | |
2056 | { | |
bb66a627 AM |
2057 | // Define _GLOBAL_OFFSET_TABLE_ to ensure it isn't seen as |
2058 | // undefined when scanning relocs (and thus requires | |
26a4e9cb AM |
2059 | // non-relative dynamic relocs). The proper value will be |
2060 | // updated later. | |
2061 | Symbol *gotsym = symtab->lookup("_GLOBAL_OFFSET_TABLE_", NULL); | |
2062 | if (gotsym != NULL && gotsym->is_undefined()) | |
2063 | { | |
2064 | Target_powerpc<size, big_endian>* target = | |
2065 | static_cast<Target_powerpc<size, big_endian>*>( | |
2066 | parameters->sized_target<size, big_endian>()); | |
2067 | Output_data_got_powerpc<size, big_endian>* got | |
2068 | = target->got_section(symtab, layout); | |
2069 | symtab->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2070 | Symbol_table::PREDEFINED, | |
2071 | got, 0, 0, | |
2072 | elfcpp::STT_OBJECT, | |
bb66a627 | 2073 | elfcpp::STB_LOCAL, |
26a4e9cb AM |
2074 | elfcpp::STV_HIDDEN, 0, |
2075 | false, false); | |
2076 | } | |
2077 | ||
2078 | // Define _SDA_BASE_ at the start of the .sdata section + 32768. | |
2079 | Symbol *sdasym = symtab->lookup("_SDA_BASE_", NULL); | |
2080 | if (sdasym != NULL && sdasym->is_undefined()) | |
2081 | { | |
2082 | Output_data_space* sdata = new Output_data_space(4, "** sdata"); | |
2083 | Output_section* os | |
2084 | = layout->add_output_section_data(".sdata", 0, | |
2085 | elfcpp::SHF_ALLOC | |
2086 | | elfcpp::SHF_WRITE, | |
2087 | sdata, ORDER_SMALL_DATA, false); | |
2088 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2089 | Symbol_table::PREDEFINED, | |
2090 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2091 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2092 | 0, false, false); | |
2093 | } | |
2094 | } | |
b4f7960d AM |
2095 | else |
2096 | { | |
2097 | // Define .TOC. as for 32-bit _GLOBAL_OFFSET_TABLE_ | |
2098 | Symbol *gotsym = symtab->lookup(".TOC.", NULL); | |
2099 | if (gotsym != NULL && gotsym->is_undefined()) | |
2100 | { | |
2101 | Target_powerpc<size, big_endian>* target = | |
2102 | static_cast<Target_powerpc<size, big_endian>*>( | |
2103 | parameters->sized_target<size, big_endian>()); | |
2104 | Output_data_got_powerpc<size, big_endian>* got | |
2105 | = target->got_section(symtab, layout); | |
2106 | symtab->define_in_output_data(".TOC.", NULL, | |
2107 | Symbol_table::PREDEFINED, | |
2108 | got, 0x8000, 0, | |
2109 | elfcpp::STT_OBJECT, | |
2110 | elfcpp::STB_LOCAL, | |
2111 | elfcpp::STV_HIDDEN, 0, | |
2112 | false, false); | |
2113 | } | |
2114 | } | |
26a4e9cb AM |
2115 | } |
2116 | ||
cf43a2fe AM |
2117 | // Set up PowerPC target specific relobj. |
2118 | ||
2119 | template<int size, bool big_endian> | |
2120 | Object* | |
2121 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
2122 | const std::string& name, | |
2123 | Input_file* input_file, | |
2124 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
2125 | { | |
2126 | int et = ehdr.get_e_type(); | |
957564c9 AS |
2127 | // ET_EXEC files are valid input for --just-symbols/-R, |
2128 | // and we treat them as relocatable objects. | |
2129 | if (et == elfcpp::ET_REL | |
2130 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
2131 | { |
2132 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 2133 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
2134 | obj->setup(); |
2135 | return obj; | |
2136 | } | |
2137 | else if (et == elfcpp::ET_DYN) | |
2138 | { | |
dc3714f3 AM |
2139 | Powerpc_dynobj<size, big_endian>* obj = |
2140 | new Powerpc_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
cf43a2fe AM |
2141 | obj->setup(); |
2142 | return obj; | |
2143 | } | |
2144 | else | |
2145 | { | |
c9269dff | 2146 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
2147 | return NULL; |
2148 | } | |
2149 | } | |
2150 | ||
2151 | template<int size, bool big_endian> | |
2152 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
2153 | { | |
2154 | public: | |
2155 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
2156 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
2157 | ||
2158 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
2159 | : Output_data_got<size, big_endian>(), | |
2160 | symtab_(symtab), layout_(layout), | |
2161 | header_ent_cnt_(size == 32 ? 3 : 1), | |
2162 | header_index_(size == 32 ? 0x2000 : 0) | |
9e69ed50 | 2163 | { } |
cf43a2fe | 2164 | |
e84fe78f AM |
2165 | // Override all the Output_data_got methods we use so as to first call |
2166 | // reserve_ent(). | |
2167 | bool | |
2168 | add_global(Symbol* gsym, unsigned int got_type) | |
2169 | { | |
2170 | this->reserve_ent(); | |
2171 | return Output_data_got<size, big_endian>::add_global(gsym, got_type); | |
2172 | } | |
2173 | ||
2174 | bool | |
2175 | add_global_plt(Symbol* gsym, unsigned int got_type) | |
2176 | { | |
2177 | this->reserve_ent(); | |
2178 | return Output_data_got<size, big_endian>::add_global_plt(gsym, got_type); | |
2179 | } | |
2180 | ||
2181 | bool | |
2182 | add_global_tls(Symbol* gsym, unsigned int got_type) | |
2183 | { return this->add_global_plt(gsym, got_type); } | |
2184 | ||
2185 | void | |
2186 | add_global_with_rel(Symbol* gsym, unsigned int got_type, | |
2187 | Output_data_reloc_generic* rel_dyn, unsigned int r_type) | |
2188 | { | |
2189 | this->reserve_ent(); | |
2190 | Output_data_got<size, big_endian>:: | |
2191 | add_global_with_rel(gsym, got_type, rel_dyn, r_type); | |
2192 | } | |
2193 | ||
2194 | void | |
2195 | add_global_pair_with_rel(Symbol* gsym, unsigned int got_type, | |
2196 | Output_data_reloc_generic* rel_dyn, | |
2197 | unsigned int r_type_1, unsigned int r_type_2) | |
2198 | { | |
2199 | this->reserve_ent(2); | |
2200 | Output_data_got<size, big_endian>:: | |
2201 | add_global_pair_with_rel(gsym, got_type, rel_dyn, r_type_1, r_type_2); | |
2202 | } | |
2203 | ||
2204 | bool | |
2205 | add_local(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2206 | { | |
2207 | this->reserve_ent(); | |
2208 | return Output_data_got<size, big_endian>::add_local(object, sym_index, | |
2209 | got_type); | |
2210 | } | |
2211 | ||
2212 | bool | |
2213 | add_local_plt(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2214 | { | |
2215 | this->reserve_ent(); | |
2216 | return Output_data_got<size, big_endian>::add_local_plt(object, sym_index, | |
2217 | got_type); | |
2218 | } | |
2219 | ||
2220 | bool | |
2221 | add_local_tls(Relobj* object, unsigned int sym_index, unsigned int got_type) | |
2222 | { return this->add_local_plt(object, sym_index, got_type); } | |
2223 | ||
2224 | void | |
2225 | add_local_tls_pair(Relobj* object, unsigned int sym_index, | |
2226 | unsigned int got_type, | |
2227 | Output_data_reloc_generic* rel_dyn, | |
2228 | unsigned int r_type) | |
2229 | { | |
2230 | this->reserve_ent(2); | |
2231 | Output_data_got<size, big_endian>:: | |
2232 | add_local_tls_pair(object, sym_index, got_type, rel_dyn, r_type); | |
2233 | } | |
2234 | ||
2235 | unsigned int | |
2236 | add_constant(Valtype constant) | |
2237 | { | |
2238 | this->reserve_ent(); | |
2239 | return Output_data_got<size, big_endian>::add_constant(constant); | |
2240 | } | |
2241 | ||
dd93cd0a AM |
2242 | unsigned int |
2243 | add_constant_pair(Valtype c1, Valtype c2) | |
2244 | { | |
2245 | this->reserve_ent(2); | |
e84fe78f | 2246 | return Output_data_got<size, big_endian>::add_constant_pair(c1, c2); |
dd93cd0a AM |
2247 | } |
2248 | ||
2249 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
2250 | unsigned int |
2251 | g_o_t() const | |
2252 | { | |
2253 | return this->got_offset(this->header_index_); | |
42cacb20 | 2254 | } |
cf43a2fe | 2255 | |
dd93cd0a AM |
2256 | // Offset of base used to access the GOT/TOC. |
2257 | // The got/toc pointer reg will be set to this value. | |
26a4e9cb | 2258 | Valtype |
dd93cd0a AM |
2259 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const |
2260 | { | |
2261 | if (size == 32) | |
2262 | return this->g_o_t(); | |
2263 | else | |
2264 | return (this->output_section()->address() | |
2265 | + object->toc_base_offset() | |
2266 | - this->address()); | |
2267 | } | |
2268 | ||
cf43a2fe AM |
2269 | // Ensure our GOT has a header. |
2270 | void | |
2271 | set_final_data_size() | |
2272 | { | |
2273 | if (this->header_ent_cnt_ != 0) | |
2274 | this->make_header(); | |
2275 | Output_data_got<size, big_endian>::set_final_data_size(); | |
2276 | } | |
2277 | ||
2278 | // First word of GOT header needs some values that are not | |
2279 | // handled by Output_data_got so poke them in here. | |
2280 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
2281 | void | |
2282 | do_write(Output_file* of) | |
2283 | { | |
c9824451 AM |
2284 | Valtype val = 0; |
2285 | if (size == 32 && this->layout_->dynamic_data() != NULL) | |
2286 | val = this->layout_->dynamic_section()->address(); | |
2287 | if (size == 64) | |
2288 | val = this->output_section()->address() + 0x8000; | |
2289 | this->replace_constant(this->header_index_, val); | |
cf43a2fe AM |
2290 | Output_data_got<size, big_endian>::do_write(of); |
2291 | } | |
2292 | ||
2293 | private: | |
2294 | void | |
2295 | reserve_ent(unsigned int cnt = 1) | |
2296 | { | |
2297 | if (this->header_ent_cnt_ == 0) | |
2298 | return; | |
2299 | if (this->num_entries() + cnt > this->header_index_) | |
2300 | this->make_header(); | |
2301 | } | |
2302 | ||
2303 | void | |
2304 | make_header() | |
2305 | { | |
2306 | this->header_ent_cnt_ = 0; | |
2307 | this->header_index_ = this->num_entries(); | |
2308 | if (size == 32) | |
2309 | { | |
2310 | Output_data_got<size, big_endian>::add_constant(0); | |
2311 | Output_data_got<size, big_endian>::add_constant(0); | |
2312 | Output_data_got<size, big_endian>::add_constant(0); | |
2313 | ||
2314 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
bb66a627 AM |
2315 | Symbol *gotsym = this->symtab_->lookup("_GLOBAL_OFFSET_TABLE_", NULL); |
2316 | if (gotsym != NULL) | |
2317 | { | |
2318 | Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(gotsym); | |
2319 | sym->set_value(this->g_o_t()); | |
2320 | } | |
2321 | else | |
2322 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
2323 | Symbol_table::PREDEFINED, | |
2324 | this, this->g_o_t(), 0, | |
2325 | elfcpp::STT_OBJECT, | |
2326 | elfcpp::STB_LOCAL, | |
2327 | elfcpp::STV_HIDDEN, 0, | |
2328 | false, false); | |
cf43a2fe AM |
2329 | } |
2330 | else | |
2331 | Output_data_got<size, big_endian>::add_constant(0); | |
2332 | } | |
2333 | ||
2334 | // Stashed pointers. | |
2335 | Symbol_table* symtab_; | |
2336 | Layout* layout_; | |
2337 | ||
2338 | // GOT header size. | |
2339 | unsigned int header_ent_cnt_; | |
2340 | // GOT header index. | |
2341 | unsigned int header_index_; | |
42cacb20 DE |
2342 | }; |
2343 | ||
2344 | // Get the GOT section, creating it if necessary. | |
2345 | ||
2346 | template<int size, bool big_endian> | |
cf43a2fe | 2347 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
2348 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
2349 | Layout* layout) | |
2350 | { | |
2351 | if (this->got_ == NULL) | |
2352 | { | |
2353 | gold_assert(symtab != NULL && layout != NULL); | |
2354 | ||
cf43a2fe AM |
2355 | this->got_ |
2356 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
2357 | |
2358 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
2359 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 2360 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
2361 | } |
2362 | ||
2363 | return this->got_; | |
2364 | } | |
2365 | ||
2366 | // Get the dynamic reloc section, creating it if necessary. | |
2367 | ||
2368 | template<int size, bool big_endian> | |
2369 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2370 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
2371 | { | |
2372 | if (this->rela_dyn_ == NULL) | |
2373 | { | |
2374 | gold_assert(layout != NULL); | |
2375 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
2376 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
2377 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
2378 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
2379 | } |
2380 | return this->rela_dyn_; | |
2381 | } | |
2382 | ||
b3ccdeb5 AM |
2383 | // Similarly, but for ifunc symbols get the one for ifunc. |
2384 | ||
2385 | template<int size, bool big_endian> | |
2386 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
2387 | Target_powerpc<size, big_endian>::rela_dyn_section(Symbol_table* symtab, | |
2388 | Layout* layout, | |
2389 | bool for_ifunc) | |
2390 | { | |
2391 | if (!for_ifunc) | |
2392 | return this->rela_dyn_section(layout); | |
2393 | ||
2394 | if (this->iplt_ == NULL) | |
2395 | this->make_iplt_section(symtab, layout); | |
2396 | return this->iplt_->rel_plt(); | |
2397 | } | |
2398 | ||
ec661b9d AM |
2399 | class Stub_control |
2400 | { | |
2401 | public: | |
2402 | // Determine the stub group size. The group size is the absolute | |
2403 | // value of the parameter --stub-group-size. If --stub-group-size | |
2404 | // is passed a negative value, we restrict stubs to be always before | |
2405 | // the stubbed branches. | |
a3e60ddb | 2406 | Stub_control(int32_t size, bool no_size_errors) |
ec661b9d | 2407 | : state_(NO_GROUP), stub_group_size_(abs(size)), |
0cfb0717 | 2408 | stub14_group_size_(abs(size) >> 10), |
a3e60ddb AM |
2409 | stubs_always_before_branch_(size < 0), |
2410 | suppress_size_errors_(no_size_errors), | |
ec661b9d AM |
2411 | group_end_addr_(0), owner_(NULL), output_section_(NULL) |
2412 | { | |
ec661b9d AM |
2413 | } |
2414 | ||
2415 | // Return true iff input section can be handled by current stub | |
2416 | // group. | |
2417 | bool | |
2418 | can_add_to_stub_group(Output_section* o, | |
2419 | const Output_section::Input_section* i, | |
2420 | bool has14); | |
2421 | ||
2422 | const Output_section::Input_section* | |
2423 | owner() | |
2424 | { return owner_; } | |
2425 | ||
2426 | Output_section* | |
2427 | output_section() | |
2428 | { return output_section_; } | |
2429 | ||
a20605cf AM |
2430 | void |
2431 | set_output_and_owner(Output_section* o, | |
2432 | const Output_section::Input_section* i) | |
2433 | { | |
2434 | this->output_section_ = o; | |
2435 | this->owner_ = i; | |
2436 | } | |
2437 | ||
ec661b9d AM |
2438 | private: |
2439 | typedef enum | |
2440 | { | |
2441 | NO_GROUP, | |
2442 | FINDING_STUB_SECTION, | |
2443 | HAS_STUB_SECTION | |
2444 | } State; | |
2445 | ||
2446 | State state_; | |
2447 | uint32_t stub_group_size_; | |
2448 | uint32_t stub14_group_size_; | |
2449 | bool stubs_always_before_branch_; | |
2450 | bool suppress_size_errors_; | |
2451 | uint64_t group_end_addr_; | |
2452 | const Output_section::Input_section* owner_; | |
2453 | Output_section* output_section_; | |
2454 | }; | |
2455 | ||
0cfdc767 | 2456 | // Return true iff input section can be handled by current stub |
ec661b9d AM |
2457 | // group. |
2458 | ||
2459 | bool | |
2460 | Stub_control::can_add_to_stub_group(Output_section* o, | |
2461 | const Output_section::Input_section* i, | |
2462 | bool has14) | |
2463 | { | |
2464 | uint32_t group_size | |
2465 | = has14 ? this->stub14_group_size_ : this->stub_group_size_; | |
2466 | bool whole_sec = o->order() == ORDER_INIT || o->order() == ORDER_FINI; | |
2467 | uint64_t this_size; | |
2468 | uint64_t start_addr = o->address(); | |
2469 | ||
2470 | if (whole_sec) | |
2471 | // .init and .fini sections are pasted together to form a single | |
2472 | // function. We can't be adding stubs in the middle of the function. | |
2473 | this_size = o->data_size(); | |
2474 | else | |
2475 | { | |
2476 | start_addr += i->relobj()->output_section_offset(i->shndx()); | |
2477 | this_size = i->data_size(); | |
2478 | } | |
2479 | uint64_t end_addr = start_addr + this_size; | |
2480 | bool toobig = this_size > group_size; | |
2481 | ||
2482 | if (toobig && !this->suppress_size_errors_) | |
2483 | gold_warning(_("%s:%s exceeds group size"), | |
2484 | i->relobj()->name().c_str(), | |
2485 | i->relobj()->section_name(i->shndx()).c_str()); | |
2486 | ||
2487 | if (this->state_ != HAS_STUB_SECTION | |
0cfdc767 AM |
2488 | && (!whole_sec || this->output_section_ != o) |
2489 | && (this->state_ == NO_GROUP | |
2490 | || this->group_end_addr_ - end_addr < group_size)) | |
ec661b9d AM |
2491 | { |
2492 | this->owner_ = i; | |
2493 | this->output_section_ = o; | |
2494 | } | |
2495 | ||
2496 | if (this->state_ == NO_GROUP) | |
2497 | { | |
2498 | this->state_ = FINDING_STUB_SECTION; | |
2499 | this->group_end_addr_ = end_addr; | |
2500 | } | |
2501 | else if (this->group_end_addr_ - start_addr < group_size) | |
2502 | ; | |
2503 | // Adding this section would make the group larger than GROUP_SIZE. | |
2504 | else if (this->state_ == FINDING_STUB_SECTION | |
2505 | && !this->stubs_always_before_branch_ | |
2506 | && !toobig) | |
2507 | { | |
2508 | // But wait, there's more! Input sections up to GROUP_SIZE | |
2509 | // bytes before the stub table can be handled by it too. | |
2510 | this->state_ = HAS_STUB_SECTION; | |
2511 | this->group_end_addr_ = end_addr; | |
2512 | } | |
2513 | else | |
2514 | { | |
2515 | this->state_ = NO_GROUP; | |
2516 | return false; | |
2517 | } | |
2518 | return true; | |
2519 | } | |
2520 | ||
2521 | // Look over all the input sections, deciding where to place stubs. | |
2522 | ||
2523 | template<int size, bool big_endian> | |
2524 | void | |
2525 | Target_powerpc<size, big_endian>::group_sections(Layout* layout, | |
a3e60ddb AM |
2526 | const Task*, |
2527 | bool no_size_errors) | |
ec661b9d | 2528 | { |
a3e60ddb | 2529 | Stub_control stub_control(this->stub_group_size_, no_size_errors); |
ec661b9d AM |
2530 | |
2531 | // Group input sections and insert stub table | |
a3e60ddb AM |
2532 | Stub_table_owner* table_owner = NULL; |
2533 | std::vector<Stub_table_owner*> tables; | |
ec661b9d AM |
2534 | Layout::Section_list section_list; |
2535 | layout->get_executable_sections(§ion_list); | |
2536 | std::stable_sort(section_list.begin(), section_list.end(), Sort_sections()); | |
2537 | for (Layout::Section_list::reverse_iterator o = section_list.rbegin(); | |
2538 | o != section_list.rend(); | |
2539 | ++o) | |
2540 | { | |
2541 | typedef Output_section::Input_section_list Input_section_list; | |
2542 | for (Input_section_list::const_reverse_iterator i | |
2543 | = (*o)->input_sections().rbegin(); | |
2544 | i != (*o)->input_sections().rend(); | |
2545 | ++i) | |
2546 | { | |
a3e60ddb AM |
2547 | if (i->is_input_section() |
2548 | || i->is_relaxed_input_section()) | |
ec661b9d AM |
2549 | { |
2550 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
2551 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
2552 | bool has14 = ppcobj->has_14bit_branch(i->shndx()); | |
2553 | if (!stub_control.can_add_to_stub_group(*o, &*i, has14)) | |
2554 | { | |
a3e60ddb AM |
2555 | table_owner->output_section = stub_control.output_section(); |
2556 | table_owner->owner = stub_control.owner(); | |
a20605cf | 2557 | stub_control.set_output_and_owner(*o, &*i); |
a3e60ddb | 2558 | table_owner = NULL; |
ec661b9d | 2559 | } |
a3e60ddb AM |
2560 | if (table_owner == NULL) |
2561 | { | |
2562 | table_owner = new Stub_table_owner; | |
2563 | tables.push_back(table_owner); | |
2564 | } | |
2565 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); | |
ec661b9d AM |
2566 | } |
2567 | } | |
2568 | } | |
a3e60ddb | 2569 | if (table_owner != NULL) |
0cfdc767 AM |
2570 | { |
2571 | const Output_section::Input_section* i = stub_control.owner(); | |
a3e60ddb AM |
2572 | |
2573 | if (tables.size() >= 2 && tables[tables.size() - 2]->owner == i) | |
0cfdc767 AM |
2574 | { |
2575 | // Corner case. A new stub group was made for the first | |
2576 | // section (last one looked at here) for some reason, but | |
2577 | // the first section is already being used as the owner for | |
2578 | // a stub table for following sections. Force it into that | |
2579 | // stub group. | |
a3e60ddb AM |
2580 | tables.pop_back(); |
2581 | delete table_owner; | |
0cfdc767 AM |
2582 | Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
2583 | <Powerpc_relobj<size, big_endian>*>(i->relobj()); | |
a3e60ddb AM |
2584 | ppcobj->set_stub_table(i->shndx(), tables.size() - 1); |
2585 | } | |
2586 | else | |
2587 | { | |
2588 | table_owner->output_section = stub_control.output_section(); | |
2589 | table_owner->owner = i; | |
0cfdc767 | 2590 | } |
a3e60ddb AM |
2591 | } |
2592 | for (typename std::vector<Stub_table_owner*>::iterator t = tables.begin(); | |
2593 | t != tables.end(); | |
2594 | ++t) | |
2595 | { | |
2596 | Stub_table<size, big_endian>* stub_table; | |
2597 | ||
2598 | if ((*t)->owner->is_input_section()) | |
2599 | stub_table = new Stub_table<size, big_endian>(this, | |
2600 | (*t)->output_section, | |
2601 | (*t)->owner); | |
2602 | else if ((*t)->owner->is_relaxed_input_section()) | |
2603 | stub_table = static_cast<Stub_table<size, big_endian>*>( | |
2604 | (*t)->owner->relaxed_input_section()); | |
0cfdc767 | 2605 | else |
a3e60ddb AM |
2606 | gold_unreachable(); |
2607 | this->stub_tables_.push_back(stub_table); | |
2608 | delete *t; | |
0cfdc767 | 2609 | } |
ec661b9d AM |
2610 | } |
2611 | ||
a3e60ddb AM |
2612 | static unsigned long |
2613 | max_branch_delta (unsigned int r_type) | |
2614 | { | |
2615 | if (r_type == elfcpp::R_POWERPC_REL14 | |
2616 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
2617 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN) | |
2618 | return 1L << 15; | |
2619 | if (r_type == elfcpp::R_POWERPC_REL24 | |
2620 | || r_type == elfcpp::R_PPC_PLTREL24 | |
2621 | || r_type == elfcpp::R_PPC_LOCAL24PC) | |
2622 | return 1L << 25; | |
2623 | return 0; | |
2624 | } | |
2625 | ||
ec661b9d AM |
2626 | // If this branch needs a plt call stub, or a long branch stub, make one. |
2627 | ||
2628 | template<int size, bool big_endian> | |
a3e60ddb | 2629 | bool |
ec661b9d AM |
2630 | Target_powerpc<size, big_endian>::Branch_info::make_stub( |
2631 | Stub_table<size, big_endian>* stub_table, | |
2632 | Stub_table<size, big_endian>* ifunc_stub_table, | |
2633 | Symbol_table* symtab) const | |
2634 | { | |
2635 | Symbol* sym = this->object_->global_symbol(this->r_sym_); | |
2636 | if (sym != NULL && sym->is_forwarder()) | |
2637 | sym = symtab->resolve_forwards(sym); | |
2638 | const Sized_symbol<size>* gsym = static_cast<const Sized_symbol<size>*>(sym); | |
88b8e639 AM |
2639 | Target_powerpc<size, big_endian>* target = |
2640 | static_cast<Target_powerpc<size, big_endian>*>( | |
2641 | parameters->sized_target<size, big_endian>()); | |
ec661b9d | 2642 | if (gsym != NULL |
88b8e639 | 2643 | ? gsym->use_plt_offset(Scan::get_reference_flags(this->r_type_, target)) |
ec661b9d AM |
2644 | : this->object_->local_has_plt_offset(this->r_sym_)) |
2645 | { | |
9055360d AM |
2646 | if (size == 64 |
2647 | && gsym != NULL | |
2648 | && target->abiversion() >= 2 | |
2649 | && !parameters->options().output_is_position_independent() | |
2650 | && !is_branch_reloc(this->r_type_)) | |
2651 | target->glink_section()->add_global_entry(gsym); | |
2652 | else | |
ec661b9d | 2653 | { |
9055360d AM |
2654 | if (stub_table == NULL) |
2655 | stub_table = this->object_->stub_table(this->shndx_); | |
2656 | if (stub_table == NULL) | |
2657 | { | |
2658 | // This is a ref from a data section to an ifunc symbol. | |
2659 | stub_table = ifunc_stub_table; | |
2660 | } | |
2661 | gold_assert(stub_table != NULL); | |
a3e60ddb AM |
2662 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2663 | if (from != invalid_address) | |
2664 | from += (this->object_->output_section(this->shndx_)->address() | |
2665 | + this->offset_); | |
9055360d | 2666 | if (gsym != NULL) |
a3e60ddb AM |
2667 | return stub_table->add_plt_call_entry(from, |
2668 | this->object_, gsym, | |
2669 | this->r_type_, this->addend_); | |
9055360d | 2670 | else |
a3e60ddb AM |
2671 | return stub_table->add_plt_call_entry(from, |
2672 | this->object_, this->r_sym_, | |
2673 | this->r_type_, this->addend_); | |
ec661b9d | 2674 | } |
ec661b9d AM |
2675 | } |
2676 | else | |
2677 | { | |
cbcb23fa | 2678 | Address max_branch_offset = max_branch_delta(this->r_type_); |
a3e60ddb AM |
2679 | if (max_branch_offset == 0) |
2680 | return true; | |
ec661b9d AM |
2681 | Address from = this->object_->get_output_section_offset(this->shndx_); |
2682 | gold_assert(from != invalid_address); | |
2683 | from += (this->object_->output_section(this->shndx_)->address() | |
2684 | + this->offset_); | |
2685 | Address to; | |
2686 | if (gsym != NULL) | |
2687 | { | |
2688 | switch (gsym->source()) | |
2689 | { | |
2690 | case Symbol::FROM_OBJECT: | |
2691 | { | |
2692 | Object* symobj = gsym->object(); | |
2693 | if (symobj->is_dynamic() | |
2694 | || symobj->pluginobj() != NULL) | |
a3e60ddb | 2695 | return true; |
ec661b9d AM |
2696 | bool is_ordinary; |
2697 | unsigned int shndx = gsym->shndx(&is_ordinary); | |
2698 | if (shndx == elfcpp::SHN_UNDEF) | |
a3e60ddb | 2699 | return true; |
ec661b9d AM |
2700 | } |
2701 | break; | |
2702 | ||
2703 | case Symbol::IS_UNDEFINED: | |
a3e60ddb | 2704 | return true; |
ec661b9d AM |
2705 | |
2706 | default: | |
2707 | break; | |
2708 | } | |
2709 | Symbol_table::Compute_final_value_status status; | |
2710 | to = symtab->compute_final_value<size>(gsym, &status); | |
2711 | if (status != Symbol_table::CFVS_OK) | |
a3e60ddb | 2712 | return true; |
9055360d AM |
2713 | if (size == 64) |
2714 | to += this->object_->ppc64_local_entry_offset(gsym); | |
ec661b9d AM |
2715 | } |
2716 | else | |
2717 | { | |
2718 | const Symbol_value<size>* psymval | |
2719 | = this->object_->local_symbol(this->r_sym_); | |
2720 | Symbol_value<size> symval; | |
2721 | typedef Sized_relobj_file<size, big_endian> ObjType; | |
2722 | typename ObjType::Compute_final_local_value_status status | |
2723 | = this->object_->compute_final_local_value(this->r_sym_, psymval, | |
2724 | &symval, symtab); | |
2725 | if (status != ObjType::CFLV_OK | |
2726 | || !symval.has_output_value()) | |
a3e60ddb | 2727 | return true; |
ec661b9d | 2728 | to = symval.value(this->object_, 0); |
9055360d AM |
2729 | if (size == 64) |
2730 | to += this->object_->ppc64_local_entry_offset(this->r_sym_); | |
ec661b9d | 2731 | } |
cbcb23fa AM |
2732 | if (!(size == 32 && this->r_type_ == elfcpp::R_PPC_PLTREL24)) |
2733 | to += this->addend_; | |
ec661b9d AM |
2734 | if (stub_table == NULL) |
2735 | stub_table = this->object_->stub_table(this->shndx_); | |
9055360d | 2736 | if (size == 64 && target->abiversion() < 2) |
ec661b9d AM |
2737 | { |
2738 | unsigned int dest_shndx; | |
1611bc4a AM |
2739 | if (!target->symval_for_branch(symtab, gsym, this->object_, |
2740 | &to, &dest_shndx)) | |
2741 | return true; | |
ec661b9d AM |
2742 | } |
2743 | Address delta = to - from; | |
2744 | if (delta + max_branch_offset >= 2 * max_branch_offset) | |
2745 | { | |
0cfdc767 AM |
2746 | if (stub_table == NULL) |
2747 | { | |
2748 | gold_warning(_("%s:%s: branch in non-executable section," | |
2749 | " no long branch stub for you"), | |
2750 | this->object_->name().c_str(), | |
2751 | this->object_->section_name(this->shndx_).c_str()); | |
a3e60ddb | 2752 | return true; |
0cfdc767 | 2753 | } |
d49044c7 AM |
2754 | bool save_res = (size == 64 |
2755 | && gsym != NULL | |
2756 | && gsym->source() == Symbol::IN_OUTPUT_DATA | |
2757 | && gsym->output_data() == target->savres_section()); | |
a3e60ddb | 2758 | return stub_table->add_long_branch_entry(this->object_, |
d49044c7 AM |
2759 | this->r_type_, |
2760 | from, to, save_res); | |
ec661b9d AM |
2761 | } |
2762 | } | |
a3e60ddb | 2763 | return true; |
ec661b9d AM |
2764 | } |
2765 | ||
2766 | // Relaxation hook. This is where we do stub generation. | |
2767 | ||
2768 | template<int size, bool big_endian> | |
2769 | bool | |
2770 | Target_powerpc<size, big_endian>::do_relax(int pass, | |
2771 | const Input_objects*, | |
2772 | Symbol_table* symtab, | |
2773 | Layout* layout, | |
2774 | const Task* task) | |
2775 | { | |
2776 | unsigned int prev_brlt_size = 0; | |
2777 | if (pass == 1) | |
ec661b9d | 2778 | { |
b4f7960d AM |
2779 | bool thread_safe |
2780 | = this->abiversion() < 2 && parameters->options().plt_thread_safe(); | |
2781 | if (size == 64 | |
2782 | && this->abiversion() < 2 | |
2783 | && !thread_safe | |
2784 | && !parameters->options().user_set_plt_thread_safe()) | |
ec661b9d | 2785 | { |
e2458743 | 2786 | static const char* const thread_starter[] = |
9e69ed50 AM |
2787 | { |
2788 | "pthread_create", | |
2789 | /* libstdc++ */ | |
2790 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
2791 | /* librt */ | |
2792 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
2793 | "mq_notify", "create_timer", | |
2794 | /* libanl */ | |
2795 | "getaddrinfo_a", | |
2796 | /* libgomp */ | |
80272b8c | 2797 | "GOMP_parallel", |
9e69ed50 | 2798 | "GOMP_parallel_start", |
80272b8c | 2799 | "GOMP_parallel_loop_static", |
9e69ed50 | 2800 | "GOMP_parallel_loop_static_start", |
80272b8c | 2801 | "GOMP_parallel_loop_dynamic", |
9e69ed50 | 2802 | "GOMP_parallel_loop_dynamic_start", |
80272b8c | 2803 | "GOMP_parallel_loop_guided", |
9e69ed50 | 2804 | "GOMP_parallel_loop_guided_start", |
80272b8c | 2805 | "GOMP_parallel_loop_runtime", |
9e69ed50 | 2806 | "GOMP_parallel_loop_runtime_start", |
80272b8c | 2807 | "GOMP_parallel_sections", |
43819297 | 2808 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
2809 | /* libgo */ |
2810 | "__go_go", | |
9e69ed50 AM |
2811 | }; |
2812 | ||
e2458743 AM |
2813 | if (parameters->options().shared()) |
2814 | thread_safe = true; | |
2815 | else | |
9e69ed50 | 2816 | { |
e2458743 AM |
2817 | for (unsigned int i = 0; |
2818 | i < sizeof(thread_starter) / sizeof(thread_starter[0]); | |
2819 | i++) | |
2820 | { | |
2821 | Symbol* sym = symtab->lookup(thread_starter[i], NULL); | |
2822 | thread_safe = (sym != NULL | |
2823 | && sym->in_reg() | |
2824 | && sym->in_real_elf()); | |
2825 | if (thread_safe) | |
2826 | break; | |
2827 | } | |
9e69ed50 | 2828 | } |
ec661b9d | 2829 | } |
9e69ed50 | 2830 | this->plt_thread_safe_ = thread_safe; |
a3e60ddb AM |
2831 | } |
2832 | ||
2833 | if (pass == 1) | |
2834 | { | |
2835 | this->stub_group_size_ = parameters->options().stub_group_size(); | |
2836 | bool no_size_errors = true; | |
2837 | if (this->stub_group_size_ == 1) | |
2838 | this->stub_group_size_ = 0x1c00000; | |
2839 | else if (this->stub_group_size_ == -1) | |
2840 | this->stub_group_size_ = -0x1e00000; | |
2841 | else | |
2842 | no_size_errors = false; | |
2843 | this->group_sections(layout, task, no_size_errors); | |
2844 | } | |
2845 | else if (this->relax_failed_ && this->relax_fail_count_ < 3) | |
2846 | { | |
2847 | this->branch_lookup_table_.clear(); | |
2848 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2849 | p != this->stub_tables_.end(); | |
2850 | ++p) | |
2851 | { | |
2852 | (*p)->clear_stubs(true); | |
2853 | } | |
2854 | this->stub_tables_.clear(); | |
2855 | this->stub_group_size_ = this->stub_group_size_ / 4 * 3; | |
2856 | gold_info(_("%s: stub group size is too large; retrying with %d"), | |
2857 | program_name, this->stub_group_size_); | |
2858 | this->group_sections(layout, task, true); | |
ec661b9d AM |
2859 | } |
2860 | ||
2861 | // We need address of stub tables valid for make_stub. | |
2862 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2863 | p != this->stub_tables_.end(); | |
2864 | ++p) | |
2865 | { | |
2866 | const Powerpc_relobj<size, big_endian>* object | |
2867 | = static_cast<const Powerpc_relobj<size, big_endian>*>((*p)->relobj()); | |
2868 | Address off = object->get_output_section_offset((*p)->shndx()); | |
2869 | gold_assert(off != invalid_address); | |
2870 | Output_section* os = (*p)->output_section(); | |
2871 | (*p)->set_address_and_size(os, off); | |
2872 | } | |
2873 | ||
9e69ed50 AM |
2874 | if (pass != 1) |
2875 | { | |
2876 | // Clear plt call stubs, long branch stubs and branch lookup table. | |
2877 | prev_brlt_size = this->branch_lookup_table_.size(); | |
2878 | this->branch_lookup_table_.clear(); | |
2879 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2880 | p != this->stub_tables_.end(); | |
2881 | ++p) | |
2882 | { | |
a3e60ddb | 2883 | (*p)->clear_stubs(false); |
9e69ed50 AM |
2884 | } |
2885 | } | |
2886 | ||
2887 | // Build all the stubs. | |
a3e60ddb | 2888 | this->relax_failed_ = false; |
ec661b9d AM |
2889 | Stub_table<size, big_endian>* ifunc_stub_table |
2890 | = this->stub_tables_.size() == 0 ? NULL : this->stub_tables_[0]; | |
2891 | Stub_table<size, big_endian>* one_stub_table | |
2892 | = this->stub_tables_.size() != 1 ? NULL : ifunc_stub_table; | |
2893 | for (typename Branches::const_iterator b = this->branch_info_.begin(); | |
2894 | b != this->branch_info_.end(); | |
2895 | b++) | |
2896 | { | |
a3e60ddb AM |
2897 | if (!b->make_stub(one_stub_table, ifunc_stub_table, symtab) |
2898 | && !this->relax_failed_) | |
2899 | { | |
2900 | this->relax_failed_ = true; | |
2901 | this->relax_fail_count_++; | |
2902 | if (this->relax_fail_count_ < 3) | |
2903 | return true; | |
2904 | } | |
ec661b9d AM |
2905 | } |
2906 | ||
9e69ed50 | 2907 | // Did anything change size? |
ec661b9d AM |
2908 | unsigned int num_huge_branches = this->branch_lookup_table_.size(); |
2909 | bool again = num_huge_branches != prev_brlt_size; | |
2910 | if (size == 64 && num_huge_branches != 0) | |
2911 | this->make_brlt_section(layout); | |
2912 | if (size == 64 && again) | |
2913 | this->brlt_section_->set_current_size(num_huge_branches); | |
2914 | ||
2915 | typedef Unordered_set<Output_section*> Output_sections; | |
2916 | Output_sections os_need_update; | |
2917 | for (typename Stub_tables::iterator p = this->stub_tables_.begin(); | |
2918 | p != this->stub_tables_.end(); | |
2919 | ++p) | |
2920 | { | |
2921 | if ((*p)->size_update()) | |
2922 | { | |
2923 | again = true; | |
9d5781f8 | 2924 | (*p)->add_eh_frame(layout); |
ec661b9d AM |
2925 | os_need_update.insert((*p)->output_section()); |
2926 | } | |
2927 | } | |
2928 | ||
9e69ed50 AM |
2929 | // Set output section offsets for all input sections in an output |
2930 | // section that just changed size. Anything past the stubs will | |
2931 | // need updating. | |
ec661b9d AM |
2932 | for (typename Output_sections::iterator p = os_need_update.begin(); |
2933 | p != os_need_update.end(); | |
2934 | p++) | |
2935 | { | |
2936 | Output_section* os = *p; | |
2937 | Address off = 0; | |
2938 | typedef Output_section::Input_section_list Input_section_list; | |
2939 | for (Input_section_list::const_iterator i = os->input_sections().begin(); | |
2940 | i != os->input_sections().end(); | |
2941 | ++i) | |
2942 | { | |
2943 | off = align_address(off, i->addralign()); | |
2944 | if (i->is_input_section() || i->is_relaxed_input_section()) | |
2945 | i->relobj()->set_section_offset(i->shndx(), off); | |
2946 | if (i->is_relaxed_input_section()) | |
2947 | { | |
2948 | Stub_table<size, big_endian>* stub_table | |
2949 | = static_cast<Stub_table<size, big_endian>*>( | |
2950 | i->relaxed_input_section()); | |
2951 | off += stub_table->set_address_and_size(os, off); | |
2952 | } | |
2953 | else | |
2954 | off += i->data_size(); | |
2955 | } | |
6830ee24 AM |
2956 | // If .branch_lt is part of this output section, then we have |
2957 | // just done the offset adjustment. | |
ec661b9d AM |
2958 | os->clear_section_offsets_need_adjustment(); |
2959 | } | |
2960 | ||
2961 | if (size == 64 | |
2962 | && !again | |
2963 | && num_huge_branches != 0 | |
2964 | && parameters->options().output_is_position_independent()) | |
2965 | { | |
2966 | // Fill in the BRLT relocs. | |
06f30c9d | 2967 | this->brlt_section_->reset_brlt_sizes(); |
ec661b9d AM |
2968 | for (typename Branch_lookup_table::const_iterator p |
2969 | = this->branch_lookup_table_.begin(); | |
2970 | p != this->branch_lookup_table_.end(); | |
2971 | ++p) | |
2972 | { | |
2973 | this->brlt_section_->add_reloc(p->first, p->second); | |
2974 | } | |
06f30c9d | 2975 | this->brlt_section_->finalize_brlt_sizes(); |
ec661b9d AM |
2976 | } |
2977 | return again; | |
2978 | } | |
2979 | ||
9d5781f8 AM |
2980 | template<int size, bool big_endian> |
2981 | void | |
2982 | Target_powerpc<size, big_endian>::do_plt_fde_location(const Output_data* plt, | |
2983 | unsigned char* oview, | |
2984 | uint64_t* paddress, | |
2985 | off_t* plen) const | |
2986 | { | |
2987 | uint64_t address = plt->address(); | |
2988 | off_t len = plt->data_size(); | |
2989 | ||
2990 | if (plt == this->glink_) | |
2991 | { | |
2992 | // See Output_data_glink::do_write() for glink contents. | |
5fe7ffdc AM |
2993 | if (len == 0) |
2994 | { | |
2995 | gold_assert(parameters->doing_static_link()); | |
2996 | // Static linking may need stubs, to support ifunc and long | |
2997 | // branches. We need to create an output section for | |
2998 | // .eh_frame early in the link process, to have a place to | |
2999 | // attach stub .eh_frame info. We also need to have | |
3000 | // registered a CIE that matches the stub CIE. Both of | |
3001 | // these requirements are satisfied by creating an FDE and | |
3002 | // CIE for .glink, even though static linking will leave | |
3003 | // .glink zero length. | |
3004 | // ??? Hopefully generating an FDE with a zero address range | |
3005 | // won't confuse anything that consumes .eh_frame info. | |
3006 | } | |
3007 | else if (size == 64) | |
9d5781f8 AM |
3008 | { |
3009 | // There is one word before __glink_PLTresolve | |
3010 | address += 8; | |
3011 | len -= 8; | |
3012 | } | |
3013 | else if (parameters->options().output_is_position_independent()) | |
3014 | { | |
3015 | // There are two FDEs for a position independent glink. | |
3016 | // The first covers the branch table, the second | |
3017 | // __glink_PLTresolve at the end of glink. | |
3018 | off_t resolve_size = this->glink_->pltresolve_size; | |
5fe7ffdc | 3019 | if (oview[9] == elfcpp::DW_CFA_nop) |
9d5781f8 AM |
3020 | len -= resolve_size; |
3021 | else | |
3022 | { | |
3023 | address += len - resolve_size; | |
3024 | len = resolve_size; | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | else | |
3029 | { | |
3030 | // Must be a stub table. | |
3031 | const Stub_table<size, big_endian>* stub_table | |
3032 | = static_cast<const Stub_table<size, big_endian>*>(plt); | |
3033 | uint64_t stub_address = stub_table->stub_address(); | |
3034 | len -= stub_address - address; | |
3035 | address = stub_address; | |
3036 | } | |
3037 | ||
3038 | *paddress = address; | |
3039 | *plen = len; | |
3040 | } | |
3041 | ||
42cacb20 DE |
3042 | // A class to handle the PLT data. |
3043 | ||
3044 | template<int size, bool big_endian> | |
cf43a2fe | 3045 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
3046 | { |
3047 | public: | |
3048 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3049 | size, big_endian> Reloc_section; | |
3050 | ||
e5d5f5ed AM |
3051 | Output_data_plt_powerpc(Target_powerpc<size, big_endian>* targ, |
3052 | Reloc_section* plt_rel, | |
e5d5f5ed AM |
3053 | const char* name) |
3054 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3055 | rel_(plt_rel), | |
3056 | targ_(targ), | |
e5d5f5ed AM |
3057 | name_(name) |
3058 | { } | |
42cacb20 DE |
3059 | |
3060 | // Add an entry to the PLT. | |
03e25981 | 3061 | void |
cf43a2fe | 3062 | add_entry(Symbol*); |
42cacb20 | 3063 | |
03e25981 | 3064 | void |
e5d5f5ed AM |
3065 | add_ifunc_entry(Symbol*); |
3066 | ||
03e25981 | 3067 | void |
e5d5f5ed AM |
3068 | add_local_ifunc_entry(Sized_relobj_file<size, big_endian>*, unsigned int); |
3069 | ||
42cacb20 | 3070 | // Return the .rela.plt section data. |
e5d5f5ed | 3071 | Reloc_section* |
cf43a2fe AM |
3072 | rel_plt() const |
3073 | { | |
42cacb20 DE |
3074 | return this->rel_; |
3075 | } | |
3076 | ||
0e70b911 CC |
3077 | // Return the number of PLT entries. |
3078 | unsigned int | |
3079 | entry_count() const | |
d83ce4e3 | 3080 | { |
b3ccdeb5 AM |
3081 | if (this->current_data_size() == 0) |
3082 | return 0; | |
b4f7960d AM |
3083 | return ((this->current_data_size() - this->first_plt_entry_offset()) |
3084 | / this->plt_entry_size()); | |
d83ce4e3 | 3085 | } |
0e70b911 | 3086 | |
42cacb20 | 3087 | protected: |
42cacb20 | 3088 | void |
cf43a2fe | 3089 | do_adjust_output_section(Output_section* os) |
42cacb20 | 3090 | { |
cf43a2fe | 3091 | os->set_entsize(0); |
42cacb20 DE |
3092 | } |
3093 | ||
6ce78956 AM |
3094 | // Write to a map file. |
3095 | void | |
3096 | do_print_to_mapfile(Mapfile* mapfile) const | |
e5d5f5ed | 3097 | { mapfile->print_output_data(this, this->name_); } |
6ce78956 | 3098 | |
cf43a2fe | 3099 | private: |
b4f7960d AM |
3100 | // Return the offset of the first non-reserved PLT entry. |
3101 | unsigned int | |
3102 | first_plt_entry_offset() const | |
3103 | { | |
3104 | // IPLT has no reserved entry. | |
3105 | if (this->name_[3] == 'I') | |
3106 | return 0; | |
3107 | return this->targ_->first_plt_entry_offset(); | |
3108 | } | |
3109 | ||
3110 | // Return the size of each PLT entry. | |
3111 | unsigned int | |
3112 | plt_entry_size() const | |
3113 | { | |
3114 | return this->targ_->plt_entry_size(); | |
3115 | } | |
cf43a2fe | 3116 | |
42cacb20 DE |
3117 | // Write out the PLT data. |
3118 | void | |
3119 | do_write(Output_file*); | |
3120 | ||
3121 | // The reloc section. | |
3122 | Reloc_section* rel_; | |
cf43a2fe AM |
3123 | // Allows access to .glink for do_write. |
3124 | Target_powerpc<size, big_endian>* targ_; | |
e5d5f5ed AM |
3125 | // What to report in map file. |
3126 | const char *name_; | |
42cacb20 DE |
3127 | }; |
3128 | ||
e5d5f5ed | 3129 | // Add an entry to the PLT. |
42cacb20 DE |
3130 | |
3131 | template<int size, bool big_endian> | |
03e25981 | 3132 | void |
e5d5f5ed | 3133 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) |
42cacb20 | 3134 | { |
e5d5f5ed AM |
3135 | if (!gsym->has_plt_offset()) |
3136 | { | |
ec661b9d | 3137 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3138 | if (off == 0) |
3139 | off += this->first_plt_entry_offset(); | |
3140 | gsym->set_plt_offset(off); | |
3141 | gsym->set_needs_dynsym_entry(); | |
3142 | unsigned int dynrel = elfcpp::R_POWERPC_JMP_SLOT; | |
3143 | this->rel_->add_global(gsym, dynrel, this, off, 0); | |
b4f7960d | 3144 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3145 | this->set_current_data_size(off); |
3146 | } | |
42cacb20 DE |
3147 | } |
3148 | ||
e5d5f5ed | 3149 | // Add an entry for a global ifunc symbol that resolves locally, to the IPLT. |
42cacb20 DE |
3150 | |
3151 | template<int size, bool big_endian> | |
03e25981 | 3152 | void |
e5d5f5ed | 3153 | Output_data_plt_powerpc<size, big_endian>::add_ifunc_entry(Symbol* gsym) |
42cacb20 | 3154 | { |
cf43a2fe AM |
3155 | if (!gsym->has_plt_offset()) |
3156 | { | |
ec661b9d | 3157 | section_size_type off = this->current_data_size(); |
cf43a2fe | 3158 | gsym->set_plt_offset(off); |
e5d5f5ed | 3159 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; |
b4f7960d | 3160 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3161 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3162 | this->rel_->add_symbolless_global_addend(gsym, dynrel, this, off, 0); | |
b4f7960d | 3163 | off += this->plt_entry_size(); |
e5d5f5ed AM |
3164 | this->set_current_data_size(off); |
3165 | } | |
3166 | } | |
3167 | ||
3168 | // Add an entry for a local ifunc symbol to the IPLT. | |
3169 | ||
3170 | template<int size, bool big_endian> | |
03e25981 | 3171 | void |
e5d5f5ed AM |
3172 | Output_data_plt_powerpc<size, big_endian>::add_local_ifunc_entry( |
3173 | Sized_relobj_file<size, big_endian>* relobj, | |
3174 | unsigned int local_sym_index) | |
3175 | { | |
3176 | if (!relobj->local_has_plt_offset(local_sym_index)) | |
3177 | { | |
ec661b9d | 3178 | section_size_type off = this->current_data_size(); |
e5d5f5ed AM |
3179 | relobj->set_local_plt_offset(local_sym_index, off); |
3180 | unsigned int dynrel = elfcpp::R_POWERPC_IRELATIVE; | |
b4f7960d | 3181 | if (size == 64 && this->targ_->abiversion() < 2) |
e5d5f5ed AM |
3182 | dynrel = elfcpp::R_PPC64_JMP_IREL; |
3183 | this->rel_->add_symbolless_local_addend(relobj, local_sym_index, dynrel, | |
3184 | this, off, 0); | |
b4f7960d | 3185 | off += this->plt_entry_size(); |
cf43a2fe AM |
3186 | this->set_current_data_size(off); |
3187 | } | |
42cacb20 DE |
3188 | } |
3189 | ||
dd93cd0a | 3190 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
9e69ed50 | 3191 | static const uint32_t add_2_2_11 = 0x7c425a14; |
dd93cd0a AM |
3192 | static const uint32_t add_3_3_2 = 0x7c631214; |
3193 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
3194 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
b4f7960d AM |
3195 | static const uint32_t add_11_2_11 = 0x7d625a14; |
3196 | static const uint32_t add_11_11_2 = 0x7d6b1214; | |
3197 | static const uint32_t addi_0_12 = 0x380c0000; | |
dd93cd0a | 3198 | static const uint32_t addi_2_2 = 0x38420000; |
dd93cd0a | 3199 | static const uint32_t addi_3_3 = 0x38630000; |
b4f7960d | 3200 | static const uint32_t addi_11_11 = 0x396b0000; |
bbec1a5d | 3201 | static const uint32_t addi_12_1 = 0x39810000; |
b4f7960d | 3202 | static const uint32_t addi_12_12 = 0x398c0000; |
dd93cd0a AM |
3203 | static const uint32_t addis_0_2 = 0x3c020000; |
3204 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
bbec1a5d | 3205 | static const uint32_t addis_2_12 = 0x3c4c0000; |
b4f7960d | 3206 | static const uint32_t addis_11_2 = 0x3d620000; |
c9269dff AM |
3207 | static const uint32_t addis_11_11 = 0x3d6b0000; |
3208 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
bbec1a5d | 3209 | static const uint32_t addis_12_1 = 0x3d810000; |
397998fc | 3210 | static const uint32_t addis_12_2 = 0x3d820000; |
c9269dff | 3211 | static const uint32_t addis_12_12 = 0x3d8c0000; |
c9269dff AM |
3212 | static const uint32_t b = 0x48000000; |
3213 | static const uint32_t bcl_20_31 = 0x429f0005; | |
3214 | static const uint32_t bctr = 0x4e800420; | |
f3a0ed29 | 3215 | static const uint32_t blr = 0x4e800020; |
9e69ed50 | 3216 | static const uint32_t bnectr_p4 = 0x4ce20420; |
bbec1a5d | 3217 | static const uint32_t cmpld_7_12_0 = 0x7fac0040; |
9e69ed50 | 3218 | static const uint32_t cmpldi_2_0 = 0x28220000; |
dd93cd0a AM |
3219 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
3220 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
f3a0ed29 AM |
3221 | static const uint32_t ld_0_1 = 0xe8010000; |
3222 | static const uint32_t ld_0_12 = 0xe80c0000; | |
dd93cd0a | 3223 | static const uint32_t ld_2_1 = 0xe8410000; |
dd93cd0a | 3224 | static const uint32_t ld_2_2 = 0xe8420000; |
b4f7960d AM |
3225 | static const uint32_t ld_2_11 = 0xe84b0000; |
3226 | static const uint32_t ld_11_2 = 0xe9620000; | |
3227 | static const uint32_t ld_11_11 = 0xe96b0000; | |
3228 | static const uint32_t ld_12_2 = 0xe9820000; | |
3229 | static const uint32_t ld_12_11 = 0xe98b0000; | |
9055360d | 3230 | static const uint32_t ld_12_12 = 0xe98c0000; |
f3a0ed29 | 3231 | static const uint32_t lfd_0_1 = 0xc8010000; |
dd93cd0a | 3232 | static const uint32_t li_0_0 = 0x38000000; |
f3a0ed29 | 3233 | static const uint32_t li_12_0 = 0x39800000; |
bbec1a5d | 3234 | static const uint32_t lis_0 = 0x3c000000; |
c9269dff AM |
3235 | static const uint32_t lis_11 = 0x3d600000; |
3236 | static const uint32_t lis_12 = 0x3d800000; | |
b4f7960d | 3237 | static const uint32_t lvx_0_12_0 = 0x7c0c00ce; |
c9269dff AM |
3238 | static const uint32_t lwz_0_12 = 0x800c0000; |
3239 | static const uint32_t lwz_11_11 = 0x816b0000; | |
3240 | static const uint32_t lwz_11_30 = 0x817e0000; | |
3241 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 3242 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 3243 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 3244 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
3245 | static const uint32_t mflr_12 = 0x7d8802a6; |
3246 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
3247 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
ec661b9d | 3248 | static const uint32_t mtctr_12 = 0x7d8903a6; |
c9269dff | 3249 | static const uint32_t mtlr_0 = 0x7c0803a6; |
c9269dff | 3250 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 3251 | static const uint32_t nop = 0x60000000; |
c9269dff | 3252 | static const uint32_t ori_0_0_0 = 0x60000000; |
b4f7960d | 3253 | static const uint32_t srdi_0_0_2 = 0x7800f082; |
f3a0ed29 AM |
3254 | static const uint32_t std_0_1 = 0xf8010000; |
3255 | static const uint32_t std_0_12 = 0xf80c0000; | |
dd93cd0a | 3256 | static const uint32_t std_2_1 = 0xf8410000; |
f3a0ed29 AM |
3257 | static const uint32_t stfd_0_1 = 0xd8010000; |
3258 | static const uint32_t stvx_0_12_0 = 0x7c0c01ce; | |
dd93cd0a | 3259 | static const uint32_t sub_11_11_12 = 0x7d6c5850; |
b4f7960d AM |
3260 | static const uint32_t sub_12_12_11 = 0x7d8b6050; |
3261 | static const uint32_t xor_2_12_12 = 0x7d826278; | |
3262 | static const uint32_t xor_11_12_12 = 0x7d8b6278; | |
42cacb20 DE |
3263 | |
3264 | // Write out the PLT. | |
3265 | ||
3266 | template<int size, bool big_endian> | |
3267 | void | |
3268 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3269 | { | |
b3ccdeb5 | 3270 | if (size == 32 && this->name_[3] != 'I') |
cf43a2fe | 3271 | { |
ec661b9d | 3272 | const section_size_type offset = this->offset(); |
cf43a2fe AM |
3273 | const section_size_type oview_size |
3274 | = convert_to_section_size_type(this->data_size()); | |
3275 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3276 | unsigned char* pov = oview; | |
3277 | unsigned char* endpov = oview + oview_size; | |
3278 | ||
e5d5f5ed | 3279 | // The address of the .glink branch table |
cf43a2fe AM |
3280 | const Output_data_glink<size, big_endian>* glink |
3281 | = this->targ_->glink_section(); | |
ec661b9d | 3282 | elfcpp::Elf_types<32>::Elf_Addr branch_tab = glink->address(); |
cf43a2fe AM |
3283 | |
3284 | while (pov < endpov) | |
3285 | { | |
3286 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
3287 | pov += 4; | |
3288 | branch_tab += 4; | |
3289 | } | |
3290 | ||
3291 | of->write_output_view(offset, oview_size, oview); | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | // Create the PLT section. | |
3296 | ||
3297 | template<int size, bool big_endian> | |
3298 | void | |
40b469d7 AM |
3299 | Target_powerpc<size, big_endian>::make_plt_section(Symbol_table* symtab, |
3300 | Layout* layout) | |
cf43a2fe AM |
3301 | { |
3302 | if (this->plt_ == NULL) | |
3303 | { | |
40b469d7 AM |
3304 | if (this->got_ == NULL) |
3305 | this->got_section(symtab, layout); | |
3306 | ||
cf43a2fe AM |
3307 | if (this->glink_ == NULL) |
3308 | make_glink_section(layout); | |
3309 | ||
3310 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
3311 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
b3ccdeb5 | 3312 | // needs to include .rela.plt in its range. |
cf43a2fe AM |
3313 | this->rela_dyn_section(layout); |
3314 | ||
e5d5f5ed AM |
3315 | Reloc_section* plt_rel = new Reloc_section(false); |
3316 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
3317 | elfcpp::SHF_ALLOC, plt_rel, | |
3318 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
3319 | this->plt_ | |
3320 | = new Output_data_plt_powerpc<size, big_endian>(this, plt_rel, | |
e5d5f5ed | 3321 | "** PLT"); |
cf43a2fe AM |
3322 | layout->add_output_section_data(".plt", |
3323 | (size == 32 | |
3324 | ? elfcpp::SHT_PROGBITS | |
3325 | : elfcpp::SHT_NOBITS), | |
3326 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3327 | this->plt_, | |
3328 | (size == 32 | |
3329 | ? ORDER_SMALL_DATA | |
3330 | : ORDER_SMALL_BSS), | |
3331 | false); | |
3332 | } | |
3333 | } | |
3334 | ||
e5d5f5ed AM |
3335 | // Create the IPLT section. |
3336 | ||
3337 | template<int size, bool big_endian> | |
3338 | void | |
40b469d7 AM |
3339 | Target_powerpc<size, big_endian>::make_iplt_section(Symbol_table* symtab, |
3340 | Layout* layout) | |
e5d5f5ed AM |
3341 | { |
3342 | if (this->iplt_ == NULL) | |
3343 | { | |
40b469d7 | 3344 | this->make_plt_section(symtab, layout); |
e5d5f5ed AM |
3345 | |
3346 | Reloc_section* iplt_rel = new Reloc_section(false); | |
3347 | this->rela_dyn_->output_section()->add_output_section_data(iplt_rel); | |
3348 | this->iplt_ | |
3349 | = new Output_data_plt_powerpc<size, big_endian>(this, iplt_rel, | |
b4f7960d | 3350 | "** IPLT"); |
e5d5f5ed | 3351 | this->plt_->output_section()->add_output_section_data(this->iplt_); |
e5d5f5ed AM |
3352 | } |
3353 | } | |
3354 | ||
ec661b9d | 3355 | // A section for huge long branch addresses, similar to plt section. |
cf43a2fe AM |
3356 | |
3357 | template<int size, bool big_endian> | |
ec661b9d | 3358 | class Output_data_brlt_powerpc : public Output_section_data_build |
cf43a2fe AM |
3359 | { |
3360 | public: | |
ec661b9d AM |
3361 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
3362 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
3363 | size, big_endian> Reloc_section; | |
c9269dff | 3364 | |
ec661b9d AM |
3365 | Output_data_brlt_powerpc(Target_powerpc<size, big_endian>* targ, |
3366 | Reloc_section* brlt_rel) | |
3367 | : Output_section_data_build(size == 32 ? 4 : 8), | |
3368 | rel_(brlt_rel), | |
3369 | targ_(targ) | |
3370 | { } | |
cf43a2fe | 3371 | |
06f30c9d CC |
3372 | void |
3373 | reset_brlt_sizes() | |
3374 | { | |
3375 | this->reset_data_size(); | |
3376 | this->rel_->reset_data_size(); | |
3377 | } | |
3378 | ||
3379 | void | |
3380 | finalize_brlt_sizes() | |
3381 | { | |
3382 | this->finalize_data_size(); | |
3383 | this->rel_->finalize_data_size(); | |
3384 | } | |
3385 | ||
ec661b9d | 3386 | // Add a reloc for an entry in the BRLT. |
cf43a2fe | 3387 | void |
ec661b9d AM |
3388 | add_reloc(Address to, unsigned int off) |
3389 | { this->rel_->add_relative(elfcpp::R_POWERPC_RELATIVE, this, off, to); } | |
e5d5f5ed | 3390 | |
ec661b9d | 3391 | // Update section and reloc section size. |
e5d5f5ed | 3392 | void |
ec661b9d AM |
3393 | set_current_size(unsigned int num_branches) |
3394 | { | |
3395 | this->reset_address_and_file_offset(); | |
3396 | this->set_current_data_size(num_branches * 16); | |
3397 | this->finalize_data_size(); | |
3398 | Output_section* os = this->output_section(); | |
3399 | os->set_section_offsets_need_adjustment(); | |
3400 | if (this->rel_ != NULL) | |
3401 | { | |
3402 | unsigned int reloc_size | |
3403 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
3404 | this->rel_->reset_address_and_file_offset(); | |
3405 | this->rel_->set_current_data_size(num_branches * reloc_size); | |
3406 | this->rel_->finalize_data_size(); | |
3407 | Output_section* os = this->rel_->output_section(); | |
3408 | os->set_section_offsets_need_adjustment(); | |
3409 | } | |
3410 | } | |
cf43a2fe | 3411 | |
ec661b9d AM |
3412 | protected: |
3413 | void | |
3414 | do_adjust_output_section(Output_section* os) | |
3415 | { | |
3416 | os->set_entsize(0); | |
3417 | } | |
e5d5f5ed | 3418 | |
ec661b9d AM |
3419 | // Write to a map file. |
3420 | void | |
3421 | do_print_to_mapfile(Mapfile* mapfile) const | |
3422 | { mapfile->print_output_data(this, "** BRLT"); } | |
c9824451 | 3423 | |
ec661b9d AM |
3424 | private: |
3425 | // Write out the BRLT data. | |
3426 | void | |
3427 | do_write(Output_file*); | |
c9824451 | 3428 | |
ec661b9d AM |
3429 | // The reloc section. |
3430 | Reloc_section* rel_; | |
3431 | Target_powerpc<size, big_endian>* targ_; | |
3432 | }; | |
cf43a2fe | 3433 | |
ec661b9d AM |
3434 | // Make the branch lookup table section. |
3435 | ||
3436 | template<int size, bool big_endian> | |
3437 | void | |
3438 | Target_powerpc<size, big_endian>::make_brlt_section(Layout* layout) | |
3439 | { | |
3440 | if (size == 64 && this->brlt_section_ == NULL) | |
3441 | { | |
3442 | Reloc_section* brlt_rel = NULL; | |
3443 | bool is_pic = parameters->options().output_is_position_independent(); | |
3444 | if (is_pic) | |
3445 | { | |
6830ee24 AM |
3446 | // When PIC we can't fill in .branch_lt (like .plt it can be |
3447 | // a bss style section) but must initialise at runtime via | |
ec661b9d AM |
3448 | // dynamic relocats. |
3449 | this->rela_dyn_section(layout); | |
3450 | brlt_rel = new Reloc_section(false); | |
3451 | this->rela_dyn_->output_section()->add_output_section_data(brlt_rel); | |
3452 | } | |
3453 | this->brlt_section_ | |
3454 | = new Output_data_brlt_powerpc<size, big_endian>(this, brlt_rel); | |
3455 | if (this->plt_ && is_pic) | |
3456 | this->plt_->output_section() | |
3457 | ->add_output_section_data(this->brlt_section_); | |
3458 | else | |
6830ee24 | 3459 | layout->add_output_section_data(".branch_lt", |
ec661b9d AM |
3460 | (is_pic ? elfcpp::SHT_NOBITS |
3461 | : elfcpp::SHT_PROGBITS), | |
3462 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
3463 | this->brlt_section_, | |
3464 | (is_pic ? ORDER_SMALL_BSS | |
3465 | : ORDER_SMALL_DATA), | |
3466 | false); | |
3467 | } | |
3468 | } | |
3469 | ||
6830ee24 | 3470 | // Write out .branch_lt when non-PIC. |
ec661b9d AM |
3471 | |
3472 | template<int size, bool big_endian> | |
3473 | void | |
3474 | Output_data_brlt_powerpc<size, big_endian>::do_write(Output_file* of) | |
3475 | { | |
3476 | if (size == 64 && !parameters->options().output_is_position_independent()) | |
3477 | { | |
3478 | const section_size_type offset = this->offset(); | |
3479 | const section_size_type oview_size | |
3480 | = convert_to_section_size_type(this->data_size()); | |
3481 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
3482 | ||
3483 | this->targ_->write_branch_lookup_table(oview); | |
3484 | of->write_output_view(offset, oview_size, oview); | |
3485 | } | |
3486 | } | |
3487 | ||
9e69ed50 AM |
3488 | static inline uint32_t |
3489 | l(uint32_t a) | |
3490 | { | |
3491 | return a & 0xffff; | |
3492 | } | |
3493 | ||
3494 | static inline uint32_t | |
3495 | hi(uint32_t a) | |
3496 | { | |
3497 | return l(a >> 16); | |
3498 | } | |
3499 | ||
3500 | static inline uint32_t | |
3501 | ha(uint32_t a) | |
3502 | { | |
3503 | return hi(a + 0x8000); | |
3504 | } | |
3505 | ||
9d5781f8 AM |
3506 | template<int size> |
3507 | struct Eh_cie | |
3508 | { | |
3509 | static const unsigned char eh_frame_cie[12]; | |
3510 | }; | |
3511 | ||
3512 | template<int size> | |
3513 | const unsigned char Eh_cie<size>::eh_frame_cie[] = | |
3514 | { | |
3515 | 1, // CIE version. | |
3516 | 'z', 'R', 0, // Augmentation string. | |
3517 | 4, // Code alignment. | |
3518 | 0x80 - size / 8 , // Data alignment. | |
3519 | 65, // RA reg. | |
3520 | 1, // Augmentation size. | |
3521 | (elfcpp::DW_EH_PE_pcrel | |
3522 | | elfcpp::DW_EH_PE_sdata4), // FDE encoding. | |
3523 | elfcpp::DW_CFA_def_cfa, 1, 0 // def_cfa: r1 offset 0. | |
3524 | }; | |
3525 | ||
b4f7960d AM |
3526 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv1. |
3527 | static const unsigned char glink_eh_frame_fde_64v1[] = | |
9d5781f8 AM |
3528 | { |
3529 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3530 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3531 | 0, // Augmentation size. | |
3532 | elfcpp::DW_CFA_advance_loc + 1, | |
3533 | elfcpp::DW_CFA_register, 65, 12, | |
3534 | elfcpp::DW_CFA_advance_loc + 4, | |
3535 | elfcpp::DW_CFA_restore_extended, 65 | |
3536 | }; | |
3537 | ||
b4f7960d AM |
3538 | // Describe __glink_PLTresolve use of LR, 64-bit version ABIv2. |
3539 | static const unsigned char glink_eh_frame_fde_64v2[] = | |
3540 | { | |
3541 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3542 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3543 | 0, // Augmentation size. | |
3544 | elfcpp::DW_CFA_advance_loc + 1, | |
3545 | elfcpp::DW_CFA_register, 65, 0, | |
3546 | elfcpp::DW_CFA_advance_loc + 4, | |
3547 | elfcpp::DW_CFA_restore_extended, 65 | |
3548 | }; | |
3549 | ||
9d5781f8 AM |
3550 | // Describe __glink_PLTresolve use of LR, 32-bit version. |
3551 | static const unsigned char glink_eh_frame_fde_32[] = | |
3552 | { | |
3553 | 0, 0, 0, 0, // Replaced with offset to .glink. | |
3554 | 0, 0, 0, 0, // Replaced with size of .glink. | |
3555 | 0, // Augmentation size. | |
3556 | elfcpp::DW_CFA_advance_loc + 2, | |
3557 | elfcpp::DW_CFA_register, 65, 0, | |
3558 | elfcpp::DW_CFA_advance_loc + 4, | |
3559 | elfcpp::DW_CFA_restore_extended, 65 | |
3560 | }; | |
3561 | ||
3562 | static const unsigned char default_fde[] = | |
3563 | { | |
3564 | 0, 0, 0, 0, // Replaced with offset to stubs. | |
3565 | 0, 0, 0, 0, // Replaced with size of stubs. | |
3566 | 0, // Augmentation size. | |
3567 | elfcpp::DW_CFA_nop, // Pad. | |
3568 | elfcpp::DW_CFA_nop, | |
3569 | elfcpp::DW_CFA_nop | |
3570 | }; | |
3571 | ||
9e69ed50 AM |
3572 | template<bool big_endian> |
3573 | static inline void | |
3574 | write_insn(unsigned char* p, uint32_t v) | |
3575 | { | |
3576 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
3577 | } | |
3578 | ||
ec661b9d AM |
3579 | // Stub_table holds information about plt and long branch stubs. |
3580 | // Stubs are built in an area following some input section determined | |
3581 | // by group_sections(). This input section is converted to a relaxed | |
3582 | // input section allowing it to be resized to accommodate the stubs | |
3583 | ||
3584 | template<int size, bool big_endian> | |
3585 | class Stub_table : public Output_relaxed_input_section | |
3586 | { | |
3587 | public: | |
3588 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
3589 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
3590 | ||
a3e60ddb AM |
3591 | Stub_table(Target_powerpc<size, big_endian>* targ, |
3592 | Output_section* output_section, | |
3593 | const Output_section::Input_section* owner) | |
3594 | : Output_relaxed_input_section(owner->relobj(), owner->shndx(), | |
3595 | owner->relobj() | |
3596 | ->section_addralign(owner->shndx())), | |
ec661b9d | 3597 | targ_(targ), plt_call_stubs_(), long_branch_stubs_(), |
a3e60ddb AM |
3598 | orig_data_size_(owner->current_data_size()), |
3599 | plt_size_(0), last_plt_size_(0), | |
d49044c7 AM |
3600 | branch_size_(0), last_branch_size_(0), eh_frame_added_(false), |
3601 | need_save_res_(false) | |
a3e60ddb AM |
3602 | { |
3603 | this->set_output_section(output_section); | |
ec661b9d | 3604 | |
a3e60ddb AM |
3605 | std::vector<Output_relaxed_input_section*> new_relaxed; |
3606 | new_relaxed.push_back(this); | |
3607 | output_section->convert_input_sections_to_relaxed_sections(new_relaxed); | |
3608 | } | |
ec661b9d AM |
3609 | |
3610 | // Add a plt call stub. | |
a3e60ddb AM |
3611 | bool |
3612 | add_plt_call_entry(Address, | |
3613 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3614 | const Symbol*, |
3615 | unsigned int, | |
3616 | Address); | |
3617 | ||
a3e60ddb AM |
3618 | bool |
3619 | add_plt_call_entry(Address, | |
3620 | const Sized_relobj_file<size, big_endian>*, | |
ec661b9d AM |
3621 | unsigned int, |
3622 | unsigned int, | |
3623 | Address); | |
3624 | ||
3625 | // Find a given plt call stub. | |
3626 | Address | |
3627 | find_plt_call_entry(const Symbol*) const; | |
3628 | ||
3629 | Address | |
3630 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3631 | unsigned int) const; | |
3632 | ||
3633 | Address | |
3634 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3635 | const Symbol*, | |
3636 | unsigned int, | |
3637 | Address) const; | |
3638 | ||
3639 | Address | |
3640 | find_plt_call_entry(const Sized_relobj_file<size, big_endian>*, | |
3641 | unsigned int, | |
3642 | unsigned int, | |
3643 | Address) const; | |
3644 | ||
3645 | // Add a long branch stub. | |
a3e60ddb AM |
3646 | bool |
3647 | add_long_branch_entry(const Powerpc_relobj<size, big_endian>*, | |
d49044c7 | 3648 | unsigned int, Address, Address, bool); |
ec661b9d AM |
3649 | |
3650 | Address | |
9d5781f8 AM |
3651 | find_long_branch_entry(const Powerpc_relobj<size, big_endian>*, |
3652 | Address) const; | |
ec661b9d | 3653 | |
a3e60ddb AM |
3654 | bool |
3655 | can_reach_stub(Address from, unsigned int off, unsigned int r_type) | |
3656 | { | |
cbcb23fa | 3657 | Address max_branch_offset = max_branch_delta(r_type); |
a3e60ddb AM |
3658 | if (max_branch_offset == 0) |
3659 | return true; | |
3660 | gold_assert(from != invalid_address); | |
3661 | Address loc = off + this->stub_address(); | |
3662 | return loc - from + max_branch_offset < 2 * max_branch_offset; | |
3663 | } | |
3664 | ||
ec661b9d | 3665 | void |
a3e60ddb | 3666 | clear_stubs(bool all) |
cf43a2fe | 3667 | { |
9e69ed50 AM |
3668 | this->plt_call_stubs_.clear(); |
3669 | this->plt_size_ = 0; | |
ec661b9d AM |
3670 | this->long_branch_stubs_.clear(); |
3671 | this->branch_size_ = 0; | |
d49044c7 | 3672 | this->need_save_res_ = false; |
a3e60ddb AM |
3673 | if (all) |
3674 | { | |
3675 | this->last_plt_size_ = 0; | |
3676 | this->last_branch_size_ = 0; | |
3677 | } | |
cf43a2fe AM |
3678 | } |
3679 | ||
ec661b9d AM |
3680 | Address |
3681 | set_address_and_size(const Output_section* os, Address off) | |
cf43a2fe | 3682 | { |
ec661b9d AM |
3683 | Address start_off = off; |
3684 | off += this->orig_data_size_; | |
3685 | Address my_size = this->plt_size_ + this->branch_size_; | |
d49044c7 AM |
3686 | if (this->need_save_res_) |
3687 | my_size += this->targ_->savres_section()->data_size(); | |
ec661b9d AM |
3688 | if (my_size != 0) |
3689 | off = align_address(off, this->stub_align()); | |
3690 | // Include original section size and alignment padding in size | |
3691 | my_size += off - start_off; | |
3692 | this->reset_address_and_file_offset(); | |
3693 | this->set_current_data_size(my_size); | |
3694 | this->set_address_and_file_offset(os->address() + start_off, | |
3695 | os->offset() + start_off); | |
3696 | return my_size; | |
cf43a2fe AM |
3697 | } |
3698 | ||
ec661b9d | 3699 | Address |
9d5781f8 | 3700 | stub_address() const |
ec661b9d AM |
3701 | { |
3702 | return align_address(this->address() + this->orig_data_size_, | |
3703 | this->stub_align()); | |
3704 | } | |
3705 | ||
3706 | Address | |
9d5781f8 | 3707 | stub_offset() const |
ec661b9d AM |
3708 | { |
3709 | return align_address(this->offset() + this->orig_data_size_, | |
3710 | this->stub_align()); | |
3711 | } | |
3712 | ||
3713 | section_size_type | |
3714 | plt_size() const | |
3715 | { return this->plt_size_; } | |
3716 | ||
3717 | bool | |
3718 | size_update() | |
3719 | { | |
3720 | Output_section* os = this->output_section(); | |
3721 | if (os->addralign() < this->stub_align()) | |
3722 | { | |
3723 | os->set_addralign(this->stub_align()); | |
3724 | // FIXME: get rid of the insane checkpointing. | |
3725 | // We can't increase alignment of the input section to which | |
3726 | // stubs are attached; The input section may be .init which | |
3727 | // is pasted together with other .init sections to form a | |
3728 | // function. Aligning might insert zero padding resulting in | |
3729 | // sigill. However we do need to increase alignment of the | |
3730 | // output section so that the align_address() on offset in | |
3731 | // set_address_and_size() adds the same padding as the | |
3732 | // align_address() on address in stub_address(). | |
3733 | // What's more, we need this alignment for the layout done in | |
3734 | // relaxation_loop_body() so that the output section starts at | |
3735 | // a suitably aligned address. | |
3736 | os->checkpoint_set_addralign(this->stub_align()); | |
3737 | } | |
9e69ed50 AM |
3738 | if (this->last_plt_size_ != this->plt_size_ |
3739 | || this->last_branch_size_ != this->branch_size_) | |
ec661b9d | 3740 | { |
9e69ed50 AM |
3741 | this->last_plt_size_ = this->plt_size_; |
3742 | this->last_branch_size_ = this->branch_size_; | |
ec661b9d AM |
3743 | return true; |
3744 | } | |
3745 | return false; | |
3746 | } | |
3747 | ||
9d5781f8 AM |
3748 | // Add .eh_frame info for this stub section. Unlike other linker |
3749 | // generated .eh_frame this is added late in the link, because we | |
3750 | // only want the .eh_frame info if this particular stub section is | |
3751 | // non-empty. | |
3752 | void | |
3753 | add_eh_frame(Layout* layout) | |
3754 | { | |
3755 | if (!this->eh_frame_added_) | |
3756 | { | |
3757 | if (!parameters->options().ld_generated_unwind_info()) | |
3758 | return; | |
3759 | ||
3760 | // Since we add stub .eh_frame info late, it must be placed | |
3761 | // after all other linker generated .eh_frame info so that | |
3762 | // merge mapping need not be updated for input sections. | |
3763 | // There is no provision to use a different CIE to that used | |
3764 | // by .glink. | |
3765 | if (!this->targ_->has_glink()) | |
3766 | return; | |
3767 | ||
3768 | layout->add_eh_frame_for_plt(this, | |
3769 | Eh_cie<size>::eh_frame_cie, | |
3770 | sizeof (Eh_cie<size>::eh_frame_cie), | |
3771 | default_fde, | |
3772 | sizeof (default_fde)); | |
3773 | this->eh_frame_added_ = true; | |
3774 | } | |
3775 | } | |
3776 | ||
ec661b9d AM |
3777 | Target_powerpc<size, big_endian>* |
3778 | targ() const | |
3779 | { return targ_; } | |
6ce78956 | 3780 | |
cf43a2fe | 3781 | private: |
9e69ed50 AM |
3782 | class Plt_stub_ent; |
3783 | class Plt_stub_ent_hash; | |
3784 | typedef Unordered_map<Plt_stub_ent, unsigned int, | |
3785 | Plt_stub_ent_hash> Plt_stub_entries; | |
3786 | ||
3787 | // Alignment of stub section. | |
ec661b9d | 3788 | unsigned int |
9e69ed50 AM |
3789 | stub_align() const |
3790 | { | |
3791 | if (size == 32) | |
3792 | return 16; | |
3793 | unsigned int min_align = 32; | |
3794 | unsigned int user_align = 1 << parameters->options().plt_align(); | |
3795 | return std::max(user_align, min_align); | |
3796 | } | |
cf43a2fe | 3797 | |
91c2b899 AM |
3798 | // Return the plt offset for the given call stub. |
3799 | Address | |
3800 | plt_off(typename Plt_stub_entries::const_iterator p, bool* is_iplt) const | |
3801 | { | |
3802 | const Symbol* gsym = p->first.sym_; | |
3803 | if (gsym != NULL) | |
3804 | { | |
3805 | *is_iplt = (gsym->type() == elfcpp::STT_GNU_IFUNC | |
3806 | && gsym->can_use_relative_reloc(false)); | |
3807 | return gsym->plt_offset(); | |
3808 | } | |
3809 | else | |
3810 | { | |
3811 | *is_iplt = true; | |
3812 | const Sized_relobj_file<size, big_endian>* relobj = p->first.object_; | |
3813 | unsigned int local_sym_index = p->first.locsym_; | |
3814 | return relobj->local_plt_offset(local_sym_index); | |
3815 | } | |
3816 | } | |
3817 | ||
9e69ed50 | 3818 | // Size of a given plt call stub. |
ec661b9d | 3819 | unsigned int |
9e69ed50 AM |
3820 | plt_call_size(typename Plt_stub_entries::const_iterator p) const |
3821 | { | |
3822 | if (size == 32) | |
3823 | return 16; | |
3824 | ||
91c2b899 AM |
3825 | bool is_iplt; |
3826 | Address plt_addr = this->plt_off(p, &is_iplt); | |
3827 | if (is_iplt) | |
3828 | plt_addr += this->targ_->iplt_section()->address(); | |
9e69ed50 | 3829 | else |
91c2b899 AM |
3830 | plt_addr += this->targ_->plt_section()->address(); |
3831 | Address got_addr = this->targ_->got_section()->output_section()->address(); | |
9e69ed50 AM |
3832 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast |
3833 | <const Powerpc_relobj<size, big_endian>*>(p->first.object_); | |
91c2b899 AM |
3834 | got_addr += ppcobj->toc_base_offset(); |
3835 | Address off = plt_addr - got_addr; | |
b4f7960d AM |
3836 | unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0); |
3837 | if (this->targ_->abiversion() < 2) | |
3838 | { | |
3839 | bool static_chain = parameters->options().plt_static_chain(); | |
3840 | bool thread_safe = this->targ_->plt_thread_safe(); | |
3841 | bytes += (4 | |
3842 | + 4 * static_chain | |
3843 | + 8 * thread_safe | |
3844 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off))); | |
3845 | } | |
9e69ed50 AM |
3846 | unsigned int align = 1 << parameters->options().plt_align(); |
3847 | if (align > 1) | |
3848 | bytes = (bytes + align - 1) & -align; | |
3849 | return bytes; | |
3850 | } | |
ec661b9d AM |
3851 | |
3852 | // Return long branch stub size. | |
3853 | unsigned int | |
3854 | branch_stub_size(Address to) | |
3855 | { | |
9e69ed50 AM |
3856 | Address loc |
3857 | = this->stub_address() + this->last_plt_size_ + this->branch_size_; | |
3858 | if (to - loc + (1 << 25) < 2 << 25) | |
ec661b9d AM |
3859 | return 4; |
3860 | if (size == 64 || !parameters->options().output_is_position_independent()) | |
3861 | return 16; | |
3862 | return 32; | |
3863 | } | |
3864 | ||
3865 | // Write out stubs. | |
cf43a2fe AM |
3866 | void |
3867 | do_write(Output_file*); | |
3868 | ||
ec661b9d AM |
3869 | // Plt call stub keys. |
3870 | class Plt_stub_ent | |
cf43a2fe | 3871 | { |
d1a8cabd | 3872 | public: |
ec661b9d | 3873 | Plt_stub_ent(const Symbol* sym) |
c9824451 AM |
3874 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
3875 | { } | |
3876 | ||
ec661b9d AM |
3877 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3878 | unsigned int locsym_index) | |
c9824451 AM |
3879 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
3880 | { } | |
3881 | ||
ec661b9d AM |
3882 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3883 | const Symbol* sym, | |
3884 | unsigned int r_type, | |
3885 | Address addend) | |
e5d5f5ed | 3886 | : sym_(sym), object_(0), addend_(0), locsym_(0) |
cf43a2fe AM |
3887 | { |
3888 | if (size != 32) | |
ec661b9d | 3889 | this->addend_ = addend; |
d1a8cabd | 3890 | else if (parameters->options().output_is_position_independent() |
ec661b9d | 3891 | && r_type == elfcpp::R_PPC_PLTREL24) |
cf43a2fe | 3892 | { |
ec661b9d | 3893 | this->addend_ = addend; |
e5d5f5ed | 3894 | if (this->addend_ >= 32768) |
d1a8cabd | 3895 | this->object_ = object; |
cf43a2fe AM |
3896 | } |
3897 | } | |
3898 | ||
ec661b9d AM |
3899 | Plt_stub_ent(const Sized_relobj_file<size, big_endian>* object, |
3900 | unsigned int locsym_index, | |
3901 | unsigned int r_type, | |
3902 | Address addend) | |
e5d5f5ed AM |
3903 | : sym_(NULL), object_(object), addend_(0), locsym_(locsym_index) |
3904 | { | |
3905 | if (size != 32) | |
ec661b9d | 3906 | this->addend_ = addend; |
e5d5f5ed | 3907 | else if (parameters->options().output_is_position_independent() |
ec661b9d AM |
3908 | && r_type == elfcpp::R_PPC_PLTREL24) |
3909 | this->addend_ = addend; | |
e5d5f5ed AM |
3910 | } |
3911 | ||
ec661b9d | 3912 | bool operator==(const Plt_stub_ent& that) const |
cf43a2fe AM |
3913 | { |
3914 | return (this->sym_ == that.sym_ | |
3915 | && this->object_ == that.object_ | |
e5d5f5ed AM |
3916 | && this->addend_ == that.addend_ |
3917 | && this->locsym_ == that.locsym_); | |
cf43a2fe | 3918 | } |
c9269dff AM |
3919 | |
3920 | const Symbol* sym_; | |
e5d5f5ed AM |
3921 | const Sized_relobj_file<size, big_endian>* object_; |
3922 | typename elfcpp::Elf_types<size>::Elf_Addr addend_; | |
3923 | unsigned int locsym_; | |
cf43a2fe AM |
3924 | }; |
3925 | ||
ec661b9d | 3926 | class Plt_stub_ent_hash |
cf43a2fe | 3927 | { |
d1a8cabd | 3928 | public: |
ec661b9d | 3929 | size_t operator()(const Plt_stub_ent& ent) const |
cf43a2fe AM |
3930 | { |
3931 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
3932 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
e5d5f5ed AM |
3933 | ^ ent.addend_ |
3934 | ^ ent.locsym_); | |
cf43a2fe | 3935 | } |
ec661b9d AM |
3936 | }; |
3937 | ||
3938 | // Long branch stub keys. | |
3939 | class Branch_stub_ent | |
3940 | { | |
3941 | public: | |
d49044c7 AM |
3942 | Branch_stub_ent(const Powerpc_relobj<size, big_endian>* obj, |
3943 | Address to, bool save_res) | |
3944 | : dest_(to), toc_base_off_(0), save_res_(save_res) | |
ec661b9d AM |
3945 | { |
3946 | if (size == 64) | |
3947 | toc_base_off_ = obj->toc_base_offset(); | |
3948 | } | |
3949 | ||
3950 | bool operator==(const Branch_stub_ent& that) const | |
3951 | { | |
3952 | return (this->dest_ == that.dest_ | |
3953 | && (size == 32 | |
3954 | || this->toc_base_off_ == that.toc_base_off_)); | |
3955 | } | |
cf43a2fe | 3956 | |
ec661b9d AM |
3957 | Address dest_; |
3958 | unsigned int toc_base_off_; | |
d49044c7 | 3959 | bool save_res_; |
ec661b9d | 3960 | }; |
cf43a2fe | 3961 | |
ec661b9d AM |
3962 | class Branch_stub_ent_hash |
3963 | { | |
3964 | public: | |
3965 | size_t operator()(const Branch_stub_ent& ent) const | |
3966 | { return ent.dest_ ^ ent.toc_base_off_; } | |
3967 | }; | |
cf43a2fe | 3968 | |
ec661b9d | 3969 | // In a sane world this would be a global. |
cf43a2fe | 3970 | Target_powerpc<size, big_endian>* targ_; |
ec661b9d | 3971 | // Map sym/object/addend to stub offset. |
ec661b9d AM |
3972 | Plt_stub_entries plt_call_stubs_; |
3973 | // Map destination address to stub offset. | |
3974 | typedef Unordered_map<Branch_stub_ent, unsigned int, | |
3975 | Branch_stub_ent_hash> Branch_stub_entries; | |
3976 | Branch_stub_entries long_branch_stubs_; | |
3977 | // size of input section | |
3978 | section_size_type orig_data_size_; | |
3979 | // size of stubs | |
9e69ed50 | 3980 | section_size_type plt_size_, last_plt_size_, branch_size_, last_branch_size_; |
9d5781f8 AM |
3981 | // Whether .eh_frame info has been created for this stub section. |
3982 | bool eh_frame_added_; | |
d49044c7 AM |
3983 | // Set if this stub group needs a copy of out-of-line register |
3984 | // save/restore functions. | |
3985 | bool need_save_res_; | |
cf43a2fe AM |
3986 | }; |
3987 | ||
ec661b9d | 3988 | // Add a plt call stub, if we do not already have one for this |
d1a8cabd | 3989 | // sym/object/addend combo. |
cf43a2fe AM |
3990 | |
3991 | template<int size, bool big_endian> | |
a3e60ddb | 3992 | bool |
ec661b9d | 3993 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 3994 | Address from, |
c9824451 | 3995 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 3996 | const Symbol* gsym, |
ec661b9d AM |
3997 | unsigned int r_type, |
3998 | Address addend) | |
cf43a2fe | 3999 | { |
ec661b9d | 4000 | Plt_stub_ent ent(object, gsym, r_type, addend); |
9055360d | 4001 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
4002 | std::pair<typename Plt_stub_entries::iterator, bool> p |
4003 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
4004 | if (p.second) | |
4005 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 4006 | return this->can_reach_stub(from, off, r_type); |
cf43a2fe AM |
4007 | } |
4008 | ||
e5d5f5ed | 4009 | template<int size, bool big_endian> |
a3e60ddb | 4010 | bool |
ec661b9d | 4011 | Stub_table<size, big_endian>::add_plt_call_entry( |
a3e60ddb | 4012 | Address from, |
c9824451 | 4013 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4014 | unsigned int locsym_index, |
ec661b9d AM |
4015 | unsigned int r_type, |
4016 | Address addend) | |
e5d5f5ed | 4017 | { |
ec661b9d | 4018 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
9055360d | 4019 | unsigned int off = this->plt_size_; |
9e69ed50 AM |
4020 | std::pair<typename Plt_stub_entries::iterator, bool> p |
4021 | = this->plt_call_stubs_.insert(std::make_pair(ent, off)); | |
4022 | if (p.second) | |
4023 | this->plt_size_ = off + this->plt_call_size(p.first); | |
a3e60ddb | 4024 | return this->can_reach_stub(from, off, r_type); |
e5d5f5ed AM |
4025 | } |
4026 | ||
ec661b9d AM |
4027 | // Find a plt call stub. |
4028 | ||
cf43a2fe | 4029 | template<int size, bool big_endian> |
ec5b8187 | 4030 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4031 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4032 | const Sized_relobj_file<size, big_endian>* object, |
d83ce4e3 | 4033 | const Symbol* gsym, |
ec661b9d AM |
4034 | unsigned int r_type, |
4035 | Address addend) const | |
c9824451 | 4036 | { |
ec661b9d AM |
4037 | Plt_stub_ent ent(object, gsym, r_type, addend); |
4038 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4039 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4040 | } |
4041 | ||
4042 | template<int size, bool big_endian> | |
ec5b8187 | 4043 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4044 | Stub_table<size, big_endian>::find_plt_call_entry(const Symbol* gsym) const |
cf43a2fe | 4045 | { |
ec661b9d AM |
4046 | Plt_stub_ent ent(gsym); |
4047 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4048 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
cf43a2fe AM |
4049 | } |
4050 | ||
e5d5f5ed | 4051 | template<int size, bool big_endian> |
ec5b8187 | 4052 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4053 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 | 4054 | const Sized_relobj_file<size, big_endian>* object, |
e5d5f5ed | 4055 | unsigned int locsym_index, |
ec661b9d AM |
4056 | unsigned int r_type, |
4057 | Address addend) const | |
e5d5f5ed | 4058 | { |
ec661b9d AM |
4059 | Plt_stub_ent ent(object, locsym_index, r_type, addend); |
4060 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4061 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
c9824451 AM |
4062 | } |
4063 | ||
4064 | template<int size, bool big_endian> | |
ec5b8187 | 4065 | typename Stub_table<size, big_endian>::Address |
ec661b9d | 4066 | Stub_table<size, big_endian>::find_plt_call_entry( |
c9824451 AM |
4067 | const Sized_relobj_file<size, big_endian>* object, |
4068 | unsigned int locsym_index) const | |
4069 | { | |
ec661b9d AM |
4070 | Plt_stub_ent ent(object, locsym_index); |
4071 | typename Plt_stub_entries::const_iterator p = this->plt_call_stubs_.find(ent); | |
4072 | return p == this->plt_call_stubs_.end() ? invalid_address : p->second; | |
4073 | } | |
4074 | ||
4075 | // Add a long branch stub if we don't already have one to given | |
4076 | // destination. | |
4077 | ||
4078 | template<int size, bool big_endian> | |
a3e60ddb | 4079 | bool |
ec661b9d AM |
4080 | Stub_table<size, big_endian>::add_long_branch_entry( |
4081 | const Powerpc_relobj<size, big_endian>* object, | |
a3e60ddb AM |
4082 | unsigned int r_type, |
4083 | Address from, | |
d49044c7 AM |
4084 | Address to, |
4085 | bool save_res) | |
ec661b9d | 4086 | { |
d49044c7 | 4087 | Branch_stub_ent ent(object, to, save_res); |
ec661b9d AM |
4088 | Address off = this->branch_size_; |
4089 | if (this->long_branch_stubs_.insert(std::make_pair(ent, off)).second) | |
4090 | { | |
d49044c7 AM |
4091 | if (save_res) |
4092 | this->need_save_res_ = true; | |
4093 | else | |
4094 | { | |
4095 | unsigned int stub_size = this->branch_stub_size(to); | |
4096 | this->branch_size_ = off + stub_size; | |
4097 | if (size == 64 && stub_size != 4) | |
4098 | this->targ_->add_branch_lookup_table(to); | |
4099 | } | |
ec661b9d | 4100 | } |
a3e60ddb | 4101 | return this->can_reach_stub(from, off, r_type); |
ec661b9d AM |
4102 | } |
4103 | ||
d49044c7 | 4104 | // Find long branch stub offset. |
ec661b9d AM |
4105 | |
4106 | template<int size, bool big_endian> | |
ec5b8187 | 4107 | typename Stub_table<size, big_endian>::Address |
ec661b9d AM |
4108 | Stub_table<size, big_endian>::find_long_branch_entry( |
4109 | const Powerpc_relobj<size, big_endian>* object, | |
9d5781f8 | 4110 | Address to) const |
ec661b9d | 4111 | { |
d49044c7 | 4112 | Branch_stub_ent ent(object, to, false); |
ec661b9d AM |
4113 | typename Branch_stub_entries::const_iterator p |
4114 | = this->long_branch_stubs_.find(ent); | |
d49044c7 AM |
4115 | if (p == this->long_branch_stubs_.end()) |
4116 | return invalid_address; | |
4117 | if (p->first.save_res_) | |
4118 | return to - this->targ_->savres_section()->address() + this->branch_size_; | |
4119 | return p->second; | |
e5d5f5ed AM |
4120 | } |
4121 | ||
ec661b9d AM |
4122 | // A class to handle .glink. |
4123 | ||
4124 | template<int size, bool big_endian> | |
4125 | class Output_data_glink : public Output_section_data | |
4126 | { | |
4127 | public: | |
9055360d AM |
4128 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4129 | static const Address invalid_address = static_cast<Address>(0) - 1; | |
ec661b9d AM |
4130 | static const int pltresolve_size = 16*4; |
4131 | ||
4132 | Output_data_glink(Target_powerpc<size, big_endian>* targ) | |
9055360d AM |
4133 | : Output_section_data(16), targ_(targ), global_entry_stubs_(), |
4134 | end_branch_table_(), ge_size_(0) | |
ec661b9d AM |
4135 | { } |
4136 | ||
9d5781f8 | 4137 | void |
9055360d | 4138 | add_eh_frame(Layout* layout); |
9d5781f8 | 4139 | |
9055360d AM |
4140 | void |
4141 | add_global_entry(const Symbol*); | |
4142 | ||
4143 | Address | |
4144 | find_global_entry(const Symbol*) const; | |
4145 | ||
4146 | Address | |
4147 | global_entry_address() const | |
4148 | { | |
4149 | gold_assert(this->is_data_size_valid()); | |
4150 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4151 | return this->address() + global_entry_off; | |
9d5781f8 AM |
4152 | } |
4153 | ||
ec661b9d AM |
4154 | protected: |
4155 | // Write to a map file. | |
4156 | void | |
4157 | do_print_to_mapfile(Mapfile* mapfile) const | |
4158 | { mapfile->print_output_data(this, _("** glink")); } | |
4159 | ||
4160 | private: | |
4161 | void | |
4162 | set_final_data_size(); | |
4163 | ||
4164 | // Write out .glink | |
4165 | void | |
4166 | do_write(Output_file*); | |
4167 | ||
4168 | // Allows access to .got and .plt for do_write. | |
4169 | Target_powerpc<size, big_endian>* targ_; | |
9055360d AM |
4170 | |
4171 | // Map sym to stub offset. | |
4172 | typedef Unordered_map<const Symbol*, unsigned int> Global_entry_stub_entries; | |
4173 | Global_entry_stub_entries global_entry_stubs_; | |
4174 | ||
4175 | unsigned int end_branch_table_, ge_size_; | |
ec661b9d AM |
4176 | }; |
4177 | ||
9055360d AM |
4178 | template<int size, bool big_endian> |
4179 | void | |
4180 | Output_data_glink<size, big_endian>::add_eh_frame(Layout* layout) | |
4181 | { | |
4182 | if (!parameters->options().ld_generated_unwind_info()) | |
4183 | return; | |
4184 | ||
4185 | if (size == 64) | |
4186 | { | |
4187 | if (this->targ_->abiversion() < 2) | |
4188 | layout->add_eh_frame_for_plt(this, | |
4189 | Eh_cie<64>::eh_frame_cie, | |
4190 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4191 | glink_eh_frame_fde_64v1, | |
4192 | sizeof (glink_eh_frame_fde_64v1)); | |
4193 | else | |
4194 | layout->add_eh_frame_for_plt(this, | |
4195 | Eh_cie<64>::eh_frame_cie, | |
4196 | sizeof (Eh_cie<64>::eh_frame_cie), | |
4197 | glink_eh_frame_fde_64v2, | |
4198 | sizeof (glink_eh_frame_fde_64v2)); | |
4199 | } | |
4200 | else | |
4201 | { | |
4202 | // 32-bit .glink can use the default since the CIE return | |
4203 | // address reg, LR, is valid. | |
4204 | layout->add_eh_frame_for_plt(this, | |
4205 | Eh_cie<32>::eh_frame_cie, | |
4206 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4207 | default_fde, | |
4208 | sizeof (default_fde)); | |
4209 | // Except where LR is used in a PIC __glink_PLTresolve. | |
4210 | if (parameters->options().output_is_position_independent()) | |
4211 | layout->add_eh_frame_for_plt(this, | |
4212 | Eh_cie<32>::eh_frame_cie, | |
4213 | sizeof (Eh_cie<32>::eh_frame_cie), | |
4214 | glink_eh_frame_fde_32, | |
4215 | sizeof (glink_eh_frame_fde_32)); | |
4216 | } | |
4217 | } | |
4218 | ||
4219 | template<int size, bool big_endian> | |
4220 | void | |
4221 | Output_data_glink<size, big_endian>::add_global_entry(const Symbol* gsym) | |
4222 | { | |
4223 | std::pair<typename Global_entry_stub_entries::iterator, bool> p | |
4224 | = this->global_entry_stubs_.insert(std::make_pair(gsym, this->ge_size_)); | |
4225 | if (p.second) | |
4226 | this->ge_size_ += 16; | |
4227 | } | |
4228 | ||
4229 | template<int size, bool big_endian> | |
4230 | typename Output_data_glink<size, big_endian>::Address | |
4231 | Output_data_glink<size, big_endian>::find_global_entry(const Symbol* gsym) const | |
4232 | { | |
4233 | typename Global_entry_stub_entries::const_iterator p | |
4234 | = this->global_entry_stubs_.find(gsym); | |
4235 | return p == this->global_entry_stubs_.end() ? invalid_address : p->second; | |
4236 | } | |
4237 | ||
cf43a2fe AM |
4238 | template<int size, bool big_endian> |
4239 | void | |
4240 | Output_data_glink<size, big_endian>::set_final_data_size() | |
4241 | { | |
ec661b9d AM |
4242 | unsigned int count = this->targ_->plt_entry_count(); |
4243 | section_size_type total = 0; | |
cf43a2fe AM |
4244 | |
4245 | if (count != 0) | |
4246 | { | |
4247 | if (size == 32) | |
4248 | { | |
cf43a2fe AM |
4249 | // space for branch table |
4250 | total += 4 * (count - 1); | |
4251 | ||
4252 | total += -total & 15; | |
4253 | total += this->pltresolve_size; | |
4254 | } | |
4255 | else | |
4256 | { | |
cf43a2fe AM |
4257 | total += this->pltresolve_size; |
4258 | ||
4259 | // space for branch table | |
b4f7960d AM |
4260 | total += 4 * count; |
4261 | if (this->targ_->abiversion() < 2) | |
4262 | { | |
4263 | total += 4 * count; | |
4264 | if (count > 0x8000) | |
4265 | total += 4 * (count - 0x8000); | |
4266 | } | |
cf43a2fe AM |
4267 | } |
4268 | } | |
9055360d AM |
4269 | this->end_branch_table_ = total; |
4270 | total = (total + 15) & -16; | |
4271 | total += this->ge_size_; | |
cf43a2fe AM |
4272 | |
4273 | this->set_data_size(total); | |
4274 | } | |
4275 | ||
ec661b9d | 4276 | // Write out plt and long branch stub code. |
cf43a2fe AM |
4277 | |
4278 | template<int size, bool big_endian> | |
4279 | void | |
ec661b9d | 4280 | Stub_table<size, big_endian>::do_write(Output_file* of) |
cf43a2fe | 4281 | { |
ec661b9d AM |
4282 | if (this->plt_call_stubs_.empty() |
4283 | && this->long_branch_stubs_.empty()) | |
4284 | return; | |
4285 | ||
4286 | const section_size_type start_off = this->offset(); | |
4287 | const section_size_type off = this->stub_offset(); | |
42cacb20 | 4288 | const section_size_type oview_size = |
ec661b9d | 4289 | convert_to_section_size_type(this->data_size() - (off - start_off)); |
cf43a2fe | 4290 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 4291 | unsigned char* p; |
42cacb20 | 4292 | |
cf43a2fe AM |
4293 | if (size == 64) |
4294 | { | |
ec661b9d AM |
4295 | const Output_data_got_powerpc<size, big_endian>* got |
4296 | = this->targ_->got_section(); | |
dd93cd0a | 4297 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 4298 | |
ec661b9d | 4299 | if (!this->plt_call_stubs_.empty()) |
cf43a2fe | 4300 | { |
ec661b9d AM |
4301 | // The base address of the .plt section. |
4302 | Address plt_base = this->targ_->plt_section()->address(); | |
4303 | Address iplt_base = invalid_address; | |
4304 | ||
4305 | // Write out plt call stubs. | |
4306 | typename Plt_stub_entries::const_iterator cs; | |
4307 | for (cs = this->plt_call_stubs_.begin(); | |
4308 | cs != this->plt_call_stubs_.end(); | |
4309 | ++cs) | |
e5d5f5ed | 4310 | { |
91c2b899 AM |
4311 | bool is_iplt; |
4312 | Address pltoff = this->plt_off(cs, &is_iplt); | |
9e69ed50 | 4313 | Address plt_addr = pltoff; |
91c2b899 | 4314 | if (is_iplt) |
ec661b9d AM |
4315 | { |
4316 | if (iplt_base == invalid_address) | |
4317 | iplt_base = this->targ_->iplt_section()->address(); | |
4318 | plt_addr += iplt_base; | |
4319 | } | |
4320 | else | |
4321 | plt_addr += plt_base; | |
4322 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
4323 | <const Powerpc_relobj<size, big_endian>*>(cs->first.object_); | |
4324 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
9e69ed50 | 4325 | Address off = plt_addr - got_addr; |
ec661b9d | 4326 | |
9e69ed50 | 4327 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
ec661b9d AM |
4328 | gold_error(_("%s: linkage table error against `%s'"), |
4329 | cs->first.object_->name().c_str(), | |
4330 | cs->first.sym_->demangled_name().c_str()); | |
4331 | ||
b4f7960d AM |
4332 | bool plt_load_toc = this->targ_->abiversion() < 2; |
4333 | bool static_chain | |
4334 | = plt_load_toc && parameters->options().plt_static_chain(); | |
4335 | bool thread_safe | |
4336 | = plt_load_toc && this->targ_->plt_thread_safe(); | |
9e69ed50 AM |
4337 | bool use_fake_dep = false; |
4338 | Address cmp_branch_off = 0; | |
4339 | if (thread_safe) | |
4340 | { | |
4341 | unsigned int pltindex | |
4342 | = ((pltoff - this->targ_->first_plt_entry_offset()) | |
4343 | / this->targ_->plt_entry_size()); | |
4344 | Address glinkoff | |
4345 | = (this->targ_->glink_section()->pltresolve_size | |
4346 | + pltindex * 8); | |
4347 | if (pltindex > 32768) | |
4348 | glinkoff += (pltindex - 32768) * 4; | |
4349 | Address to | |
4350 | = this->targ_->glink_section()->address() + glinkoff; | |
4351 | Address from | |
4352 | = (this->stub_address() + cs->second + 24 | |
4353 | + 4 * (ha(off) != 0) | |
4354 | + 4 * (ha(off + 8 + 8 * static_chain) != ha(off)) | |
4355 | + 4 * static_chain); | |
4356 | cmp_branch_off = to - from; | |
4357 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
4358 | } | |
4359 | ||
ec661b9d | 4360 | p = oview + cs->second; |
9e69ed50 | 4361 | if (ha(off) != 0) |
ec661b9d | 4362 | { |
b4f7960d AM |
4363 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4364 | p += 4; | |
397998fc AM |
4365 | if (plt_load_toc) |
4366 | { | |
4367 | write_insn<big_endian>(p, addis_11_2 + ha(off)); | |
4368 | p += 4; | |
4369 | write_insn<big_endian>(p, ld_12_11 + l(off)); | |
4370 | p += 4; | |
4371 | } | |
4372 | else | |
4373 | { | |
4374 | write_insn<big_endian>(p, addis_12_2 + ha(off)); | |
4375 | p += 4; | |
4376 | write_insn<big_endian>(p, ld_12_12 + l(off)); | |
4377 | p += 4; | |
4378 | } | |
b4f7960d AM |
4379 | if (plt_load_toc |
4380 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4381 | { |
b4f7960d AM |
4382 | write_insn<big_endian>(p, addi_11_11 + l(off)); |
4383 | p += 4; | |
9e69ed50 | 4384 | off = 0; |
ec661b9d | 4385 | } |
b4f7960d AM |
4386 | write_insn<big_endian>(p, mtctr_12); |
4387 | p += 4; | |
4388 | if (plt_load_toc) | |
9e69ed50 | 4389 | { |
b4f7960d AM |
4390 | if (use_fake_dep) |
4391 | { | |
4392 | write_insn<big_endian>(p, xor_2_12_12); | |
4393 | p += 4; | |
4394 | write_insn<big_endian>(p, add_11_11_2); | |
4395 | p += 4; | |
4396 | } | |
4397 | write_insn<big_endian>(p, ld_2_11 + l(off + 8)); | |
4398 | p += 4; | |
4399 | if (static_chain) | |
4400 | { | |
4401 | write_insn<big_endian>(p, ld_11_11 + l(off + 16)); | |
4402 | p += 4; | |
4403 | } | |
9e69ed50 | 4404 | } |
ec661b9d AM |
4405 | } |
4406 | else | |
4407 | { | |
b4f7960d AM |
4408 | write_insn<big_endian>(p, std_2_1 + this->targ_->stk_toc()); |
4409 | p += 4; | |
4410 | write_insn<big_endian>(p, ld_12_2 + l(off)); | |
4411 | p += 4; | |
4412 | if (plt_load_toc | |
4413 | && ha(off + 8 + 8 * static_chain) != ha(off)) | |
ec661b9d | 4414 | { |
b4f7960d AM |
4415 | write_insn<big_endian>(p, addi_2_2 + l(off)); |
4416 | p += 4; | |
9e69ed50 | 4417 | off = 0; |
ec661b9d | 4418 | } |
b4f7960d AM |
4419 | write_insn<big_endian>(p, mtctr_12); |
4420 | p += 4; | |
4421 | if (plt_load_toc) | |
9e69ed50 | 4422 | { |
b4f7960d AM |
4423 | if (use_fake_dep) |
4424 | { | |
4425 | write_insn<big_endian>(p, xor_11_12_12); | |
4426 | p += 4; | |
4427 | write_insn<big_endian>(p, add_2_2_11); | |
4428 | p += 4; | |
4429 | } | |
4430 | if (static_chain) | |
4431 | { | |
4432 | write_insn<big_endian>(p, ld_11_2 + l(off + 16)); | |
4433 | p += 4; | |
4434 | } | |
4435 | write_insn<big_endian>(p, ld_2_2 + l(off + 8)); | |
4436 | p += 4; | |
9e69ed50 | 4437 | } |
ec661b9d | 4438 | } |
9e69ed50 AM |
4439 | if (thread_safe && !use_fake_dep) |
4440 | { | |
b4f7960d AM |
4441 | write_insn<big_endian>(p, cmpldi_2_0); |
4442 | p += 4; | |
4443 | write_insn<big_endian>(p, bnectr_p4); | |
4444 | p += 4; | |
9e69ed50 AM |
4445 | write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc)); |
4446 | } | |
4447 | else | |
4448 | write_insn<big_endian>(p, bctr); | |
e5d5f5ed | 4449 | } |
ec661b9d AM |
4450 | } |
4451 | ||
4452 | // Write out long branch stubs. | |
4453 | typename Branch_stub_entries::const_iterator bs; | |
4454 | for (bs = this->long_branch_stubs_.begin(); | |
4455 | bs != this->long_branch_stubs_.end(); | |
4456 | ++bs) | |
4457 | { | |
d49044c7 AM |
4458 | if (bs->first.save_res_) |
4459 | continue; | |
ec661b9d AM |
4460 | p = oview + this->plt_size_ + bs->second; |
4461 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4462 | Address delta = bs->first.dest_ - loc; | |
4463 | if (delta + (1 << 25) < 2 << 25) | |
4464 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
e5d5f5ed | 4465 | else |
cf43a2fe | 4466 | { |
ec661b9d AM |
4467 | Address brlt_addr |
4468 | = this->targ_->find_branch_lookup_table(bs->first.dest_); | |
4469 | gold_assert(brlt_addr != invalid_address); | |
4470 | brlt_addr += this->targ_->brlt_section()->address(); | |
4471 | Address got_addr = got_os_addr + bs->first.toc_base_off_; | |
4472 | Address brltoff = brlt_addr - got_addr; | |
4473 | if (ha(brltoff) == 0) | |
4474 | { | |
b4f7960d | 4475 | write_insn<big_endian>(p, ld_12_2 + l(brltoff)), p += 4; |
ec661b9d AM |
4476 | } |
4477 | else | |
cf43a2fe | 4478 | { |
397998fc AM |
4479 | write_insn<big_endian>(p, addis_12_2 + ha(brltoff)), p += 4; |
4480 | write_insn<big_endian>(p, ld_12_12 + l(brltoff)), p += 4; | |
cf43a2fe | 4481 | } |
b4f7960d | 4482 | write_insn<big_endian>(p, mtctr_12), p += 4; |
ec661b9d | 4483 | write_insn<big_endian>(p, bctr); |
cf43a2fe | 4484 | } |
ec661b9d AM |
4485 | } |
4486 | } | |
4487 | else | |
4488 | { | |
4489 | if (!this->plt_call_stubs_.empty()) | |
4490 | { | |
4491 | // The base address of the .plt section. | |
4492 | Address plt_base = this->targ_->plt_section()->address(); | |
4493 | Address iplt_base = invalid_address; | |
4494 | // The address of _GLOBAL_OFFSET_TABLE_. | |
4495 | Address g_o_t = invalid_address; | |
4496 | ||
4497 | // Write out plt call stubs. | |
4498 | typename Plt_stub_entries::const_iterator cs; | |
4499 | for (cs = this->plt_call_stubs_.begin(); | |
4500 | cs != this->plt_call_stubs_.end(); | |
4501 | ++cs) | |
cf43a2fe | 4502 | { |
91c2b899 AM |
4503 | bool is_iplt; |
4504 | Address plt_addr = this->plt_off(cs, &is_iplt); | |
4505 | if (is_iplt) | |
ec661b9d AM |
4506 | { |
4507 | if (iplt_base == invalid_address) | |
4508 | iplt_base = this->targ_->iplt_section()->address(); | |
4509 | plt_addr += iplt_base; | |
4510 | } | |
4511 | else | |
4512 | plt_addr += plt_base; | |
4513 | ||
4514 | p = oview + cs->second; | |
4515 | if (parameters->options().output_is_position_independent()) | |
4516 | { | |
4517 | Address got_addr; | |
4518 | const Powerpc_relobj<size, big_endian>* ppcobj | |
4519 | = (static_cast<const Powerpc_relobj<size, big_endian>*> | |
4520 | (cs->first.object_)); | |
4521 | if (ppcobj != NULL && cs->first.addend_ >= 32768) | |
4522 | { | |
4523 | unsigned int got2 = ppcobj->got2_shndx(); | |
4524 | got_addr = ppcobj->get_output_section_offset(got2); | |
4525 | gold_assert(got_addr != invalid_address); | |
4526 | got_addr += (ppcobj->output_section(got2)->address() | |
4527 | + cs->first.addend_); | |
4528 | } | |
4529 | else | |
4530 | { | |
4531 | if (g_o_t == invalid_address) | |
4532 | { | |
4533 | const Output_data_got_powerpc<size, big_endian>* got | |
4534 | = this->targ_->got_section(); | |
4535 | g_o_t = got->address() + got->g_o_t(); | |
4536 | } | |
4537 | got_addr = g_o_t; | |
4538 | } | |
4539 | ||
9e69ed50 AM |
4540 | Address off = plt_addr - got_addr; |
4541 | if (ha(off) == 0) | |
ec661b9d | 4542 | { |
9e69ed50 | 4543 | write_insn<big_endian>(p + 0, lwz_11_30 + l(off)); |
ec661b9d AM |
4544 | write_insn<big_endian>(p + 4, mtctr_11); |
4545 | write_insn<big_endian>(p + 8, bctr); | |
4546 | } | |
4547 | else | |
4548 | { | |
9e69ed50 AM |
4549 | write_insn<big_endian>(p + 0, addis_11_30 + ha(off)); |
4550 | write_insn<big_endian>(p + 4, lwz_11_11 + l(off)); | |
ec661b9d AM |
4551 | write_insn<big_endian>(p + 8, mtctr_11); |
4552 | write_insn<big_endian>(p + 12, bctr); | |
4553 | } | |
4554 | } | |
4555 | else | |
4556 | { | |
4557 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
4558 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
4559 | write_insn<big_endian>(p + 8, mtctr_11); | |
4560 | write_insn<big_endian>(p + 12, bctr); | |
4561 | } | |
4562 | } | |
4563 | } | |
4564 | ||
4565 | // Write out long branch stubs. | |
4566 | typename Branch_stub_entries::const_iterator bs; | |
4567 | for (bs = this->long_branch_stubs_.begin(); | |
4568 | bs != this->long_branch_stubs_.end(); | |
4569 | ++bs) | |
4570 | { | |
d49044c7 AM |
4571 | if (bs->first.save_res_) |
4572 | continue; | |
ec661b9d AM |
4573 | p = oview + this->plt_size_ + bs->second; |
4574 | Address loc = this->stub_address() + this->plt_size_ + bs->second; | |
4575 | Address delta = bs->first.dest_ - loc; | |
4576 | if (delta + (1 << 25) < 2 << 25) | |
4577 | write_insn<big_endian>(p, b | (delta & 0x3fffffc)); | |
4578 | else if (!parameters->options().output_is_position_independent()) | |
4579 | { | |
4580 | write_insn<big_endian>(p + 0, lis_12 + ha(bs->first.dest_)); | |
4581 | write_insn<big_endian>(p + 4, addi_12_12 + l(bs->first.dest_)); | |
4582 | write_insn<big_endian>(p + 8, mtctr_12); | |
4583 | write_insn<big_endian>(p + 12, bctr); | |
4584 | } | |
4585 | else | |
4586 | { | |
4587 | delta -= 8; | |
4588 | write_insn<big_endian>(p + 0, mflr_0); | |
4589 | write_insn<big_endian>(p + 4, bcl_20_31); | |
4590 | write_insn<big_endian>(p + 8, mflr_12); | |
4591 | write_insn<big_endian>(p + 12, addis_12_12 + ha(delta)); | |
4592 | write_insn<big_endian>(p + 16, addi_12_12 + l(delta)); | |
4593 | write_insn<big_endian>(p + 20, mtlr_0); | |
4594 | write_insn<big_endian>(p + 24, mtctr_12); | |
4595 | write_insn<big_endian>(p + 28, bctr); | |
cf43a2fe AM |
4596 | } |
4597 | } | |
ec661b9d | 4598 | } |
d49044c7 AM |
4599 | if (this->need_save_res_) |
4600 | { | |
4601 | p = oview + this->plt_size_ + this->branch_size_; | |
4602 | memcpy (p, this->targ_->savres_section()->contents(), | |
4603 | this->targ_->savres_section()->data_size()); | |
4604 | } | |
ec661b9d AM |
4605 | } |
4606 | ||
4607 | // Write out .glink. | |
4608 | ||
4609 | template<int size, bool big_endian> | |
4610 | void | |
4611 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
4612 | { | |
4613 | const section_size_type off = this->offset(); | |
4614 | const section_size_type oview_size = | |
4615 | convert_to_section_size_type(this->data_size()); | |
4616 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
4617 | unsigned char* p; | |
4618 | ||
4619 | // The base address of the .plt section. | |
4620 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; | |
4621 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 4622 | |
ec661b9d AM |
4623 | if (size == 64) |
4624 | { | |
9055360d | 4625 | if (this->end_branch_table_ != 0) |
b4f7960d | 4626 | { |
9055360d AM |
4627 | // Write pltresolve stub. |
4628 | p = oview; | |
4629 | Address after_bcl = this->address() + 16; | |
4630 | Address pltoff = plt_base - after_bcl; | |
4631 | ||
4632 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
cf43a2fe | 4633 | |
b4f7960d | 4634 | if (this->targ_->abiversion() < 2) |
cf43a2fe | 4635 | { |
9055360d AM |
4636 | write_insn<big_endian>(p, mflr_12), p += 4; |
4637 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4638 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4639 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4640 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
4641 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4642 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4643 | write_insn<big_endian>(p, ld_2_11 + 8), p += 4; | |
4644 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4645 | write_insn<big_endian>(p, ld_11_11 + 16), p += 4; | |
4646 | } | |
4647 | else | |
4648 | { | |
4649 | write_insn<big_endian>(p, mflr_0), p += 4; | |
4650 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
4651 | write_insn<big_endian>(p, mflr_11), p += 4; | |
4652 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
4653 | write_insn<big_endian>(p, mtlr_0), p += 4; | |
4654 | write_insn<big_endian>(p, sub_12_12_11), p += 4; | |
4655 | write_insn<big_endian>(p, add_11_2_11), p += 4; | |
4656 | write_insn<big_endian>(p, addi_0_12 + l(-48)), p += 4; | |
4657 | write_insn<big_endian>(p, ld_12_11 + 0), p += 4; | |
4658 | write_insn<big_endian>(p, srdi_0_0_2), p += 4; | |
4659 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4660 | write_insn<big_endian>(p, ld_11_11 + 8), p += 4; | |
4661 | } | |
4662 | write_insn<big_endian>(p, bctr), p += 4; | |
4663 | while (p < oview + this->pltresolve_size) | |
4664 | write_insn<big_endian>(p, nop), p += 4; | |
4665 | ||
4666 | // Write lazy link call stubs. | |
4667 | uint32_t indx = 0; | |
4668 | while (p < oview + this->end_branch_table_) | |
4669 | { | |
4670 | if (this->targ_->abiversion() < 2) | |
b4f7960d | 4671 | { |
9055360d AM |
4672 | if (indx < 0x8000) |
4673 | { | |
4674 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
4675 | } | |
4676 | else | |
4677 | { | |
bbec1a5d | 4678 | write_insn<big_endian>(p, lis_0 + hi(indx)), p += 4; |
9055360d AM |
4679 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; |
4680 | } | |
b4f7960d | 4681 | } |
9055360d AM |
4682 | uint32_t branch_off = 8 - (p - oview); |
4683 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; | |
4684 | indx++; | |
cf43a2fe | 4685 | } |
9055360d AM |
4686 | } |
4687 | ||
4688 | Address plt_base = this->targ_->plt_section()->address(); | |
4689 | Address iplt_base = invalid_address; | |
4690 | unsigned int global_entry_off = (this->end_branch_table_ + 15) & -16; | |
4691 | Address global_entry_base = this->address() + global_entry_off; | |
4692 | typename Global_entry_stub_entries::const_iterator ge; | |
4693 | for (ge = this->global_entry_stubs_.begin(); | |
4694 | ge != this->global_entry_stubs_.end(); | |
4695 | ++ge) | |
4696 | { | |
4697 | p = oview + global_entry_off + ge->second; | |
4698 | Address plt_addr = ge->first->plt_offset(); | |
4699 | if (ge->first->type() == elfcpp::STT_GNU_IFUNC | |
4700 | && ge->first->can_use_relative_reloc(false)) | |
4701 | { | |
4702 | if (iplt_base == invalid_address) | |
4703 | iplt_base = this->targ_->iplt_section()->address(); | |
4704 | plt_addr += iplt_base; | |
4705 | } | |
4706 | else | |
4707 | plt_addr += plt_base; | |
4708 | Address my_addr = global_entry_base + ge->second; | |
4709 | Address off = plt_addr - my_addr; | |
4710 | ||
4711 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
4712 | gold_error(_("%s: linkage table error against `%s'"), | |
4713 | ge->first->object()->name().c_str(), | |
4714 | ge->first->demangled_name().c_str()); | |
4715 | ||
4716 | write_insn<big_endian>(p, addis_12_12 + ha(off)), p += 4; | |
4717 | write_insn<big_endian>(p, ld_12_12 + l(off)), p += 4; | |
4718 | write_insn<big_endian>(p, mtctr_12), p += 4; | |
4719 | write_insn<big_endian>(p, bctr); | |
cf43a2fe AM |
4720 | } |
4721 | } | |
4722 | else | |
4723 | { | |
ec661b9d AM |
4724 | const Output_data_got_powerpc<size, big_endian>* got |
4725 | = this->targ_->got_section(); | |
dd93cd0a AM |
4726 | // The address of _GLOBAL_OFFSET_TABLE_. |
4727 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 4728 | |
cf43a2fe | 4729 | // Write out pltresolve branch table. |
ec661b9d | 4730 | p = oview; |
cf43a2fe | 4731 | unsigned int the_end = oview_size - this->pltresolve_size; |
c9269dff | 4732 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
4733 | while (p < end_p - 8 * 4) |
4734 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
4735 | while (p < end_p) | |
4736 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 4737 | |
cf43a2fe AM |
4738 | // Write out pltresolve call stub. |
4739 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 4740 | { |
ec661b9d | 4741 | Address res0_off = 0; |
dd93cd0a AM |
4742 | Address after_bcl_off = the_end + 12; |
4743 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
4744 | |
4745 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
4746 | write_insn<big_endian>(p + 4, mflr_0); | |
4747 | write_insn<big_endian>(p + 8, bcl_20_31); | |
4748 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
4749 | write_insn<big_endian>(p + 16, mflr_12); | |
4750 | write_insn<big_endian>(p + 20, mtlr_0); | |
4751 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
4752 | ||
dd93cd0a | 4753 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
4754 | |
4755 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
4756 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
4757 | { | |
4758 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
4759 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
4760 | } | |
4761 | else | |
4762 | { | |
4763 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
4764 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
4765 | } | |
4766 | write_insn<big_endian>(p + 40, mtctr_0); | |
4767 | write_insn<big_endian>(p + 44, add_0_11_11); | |
4768 | write_insn<big_endian>(p + 48, add_11_0_11); | |
4769 | write_insn<big_endian>(p + 52, bctr); | |
4770 | write_insn<big_endian>(p + 56, nop); | |
4771 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4772 | } |
cf43a2fe | 4773 | else |
42cacb20 | 4774 | { |
ec661b9d | 4775 | Address res0 = this->address(); |
cf43a2fe AM |
4776 | |
4777 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
4778 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
4779 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4780 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
4781 | else | |
4782 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
4783 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
4784 | write_insn<big_endian>(p + 16, mtctr_0); | |
4785 | write_insn<big_endian>(p + 20, add_0_11_11); | |
4786 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
4787 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
4788 | else | |
4789 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
4790 | write_insn<big_endian>(p + 28, add_11_0_11); | |
4791 | write_insn<big_endian>(p + 32, bctr); | |
4792 | write_insn<big_endian>(p + 36, nop); | |
4793 | write_insn<big_endian>(p + 40, nop); | |
4794 | write_insn<big_endian>(p + 44, nop); | |
4795 | write_insn<big_endian>(p + 48, nop); | |
4796 | write_insn<big_endian>(p + 52, nop); | |
4797 | write_insn<big_endian>(p + 56, nop); | |
4798 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 4799 | } |
cf43a2fe | 4800 | p += 64; |
42cacb20 DE |
4801 | } |
4802 | ||
cf43a2fe AM |
4803 | of->write_output_view(off, oview_size, oview); |
4804 | } | |
4805 | ||
f3a0ed29 AM |
4806 | |
4807 | // A class to handle linker generated save/restore functions. | |
4808 | ||
4809 | template<int size, bool big_endian> | |
4810 | class Output_data_save_res : public Output_section_data_build | |
4811 | { | |
4812 | public: | |
4813 | Output_data_save_res(Symbol_table* symtab); | |
4814 | ||
d49044c7 AM |
4815 | const unsigned char* |
4816 | contents() const | |
4817 | { | |
4818 | return contents_; | |
4819 | } | |
4820 | ||
f3a0ed29 AM |
4821 | protected: |
4822 | // Write to a map file. | |
4823 | void | |
4824 | do_print_to_mapfile(Mapfile* mapfile) const | |
4825 | { mapfile->print_output_data(this, _("** save/restore")); } | |
4826 | ||
4827 | void | |
4828 | do_write(Output_file*); | |
4829 | ||
4830 | private: | |
4831 | // The maximum size of save/restore contents. | |
4832 | static const unsigned int savres_max = 218*4; | |
4833 | ||
4834 | void | |
4835 | savres_define(Symbol_table* symtab, | |
4836 | const char *name, | |
4837 | unsigned int lo, unsigned int hi, | |
4838 | unsigned char* write_ent(unsigned char*, int), | |
4839 | unsigned char* write_tail(unsigned char*, int)); | |
4840 | ||
4841 | unsigned char *contents_; | |
4842 | }; | |
4843 | ||
4844 | template<bool big_endian> | |
4845 | static unsigned char* | |
4846 | savegpr0(unsigned char* p, int r) | |
4847 | { | |
4848 | uint32_t insn = std_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4849 | write_insn<big_endian>(p, insn); | |
4850 | return p + 4; | |
4851 | } | |
4852 | ||
4853 | template<bool big_endian> | |
4854 | static unsigned char* | |
4855 | savegpr0_tail(unsigned char* p, int r) | |
4856 | { | |
4857 | p = savegpr0<big_endian>(p, r); | |
4858 | uint32_t insn = std_0_1 + 16; | |
4859 | write_insn<big_endian>(p, insn); | |
4860 | p = p + 4; | |
4861 | write_insn<big_endian>(p, blr); | |
4862 | return p + 4; | |
4863 | } | |
4864 | ||
4865 | template<bool big_endian> | |
62fe925a | 4866 | static unsigned char* |
f3a0ed29 AM |
4867 | restgpr0(unsigned char* p, int r) |
4868 | { | |
4869 | uint32_t insn = ld_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4870 | write_insn<big_endian>(p, insn); | |
4871 | return p + 4; | |
4872 | } | |
4873 | ||
4874 | template<bool big_endian> | |
62fe925a | 4875 | static unsigned char* |
f3a0ed29 AM |
4876 | restgpr0_tail(unsigned char* p, int r) |
4877 | { | |
4878 | uint32_t insn = ld_0_1 + 16; | |
4879 | write_insn<big_endian>(p, insn); | |
4880 | p = p + 4; | |
4881 | p = restgpr0<big_endian>(p, r); | |
4882 | write_insn<big_endian>(p, mtlr_0); | |
4883 | p = p + 4; | |
4884 | if (r == 29) | |
4885 | { | |
4886 | p = restgpr0<big_endian>(p, 30); | |
4887 | p = restgpr0<big_endian>(p, 31); | |
4888 | } | |
4889 | write_insn<big_endian>(p, blr); | |
4890 | return p + 4; | |
4891 | } | |
4892 | ||
4893 | template<bool big_endian> | |
62fe925a | 4894 | static unsigned char* |
f3a0ed29 AM |
4895 | savegpr1(unsigned char* p, int r) |
4896 | { | |
4897 | uint32_t insn = std_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4898 | write_insn<big_endian>(p, insn); | |
4899 | return p + 4; | |
4900 | } | |
4901 | ||
4902 | template<bool big_endian> | |
62fe925a | 4903 | static unsigned char* |
f3a0ed29 AM |
4904 | savegpr1_tail(unsigned char* p, int r) |
4905 | { | |
4906 | p = savegpr1<big_endian>(p, r); | |
4907 | write_insn<big_endian>(p, blr); | |
4908 | return p + 4; | |
4909 | } | |
4910 | ||
4911 | template<bool big_endian> | |
62fe925a | 4912 | static unsigned char* |
f3a0ed29 AM |
4913 | restgpr1(unsigned char* p, int r) |
4914 | { | |
4915 | uint32_t insn = ld_0_12 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4916 | write_insn<big_endian>(p, insn); | |
4917 | return p + 4; | |
4918 | } | |
4919 | ||
4920 | template<bool big_endian> | |
62fe925a | 4921 | static unsigned char* |
f3a0ed29 AM |
4922 | restgpr1_tail(unsigned char* p, int r) |
4923 | { | |
4924 | p = restgpr1<big_endian>(p, r); | |
4925 | write_insn<big_endian>(p, blr); | |
4926 | return p + 4; | |
4927 | } | |
4928 | ||
4929 | template<bool big_endian> | |
62fe925a | 4930 | static unsigned char* |
f3a0ed29 AM |
4931 | savefpr(unsigned char* p, int r) |
4932 | { | |
4933 | uint32_t insn = stfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4934 | write_insn<big_endian>(p, insn); | |
4935 | return p + 4; | |
4936 | } | |
4937 | ||
4938 | template<bool big_endian> | |
62fe925a | 4939 | static unsigned char* |
f3a0ed29 AM |
4940 | savefpr0_tail(unsigned char* p, int r) |
4941 | { | |
4942 | p = savefpr<big_endian>(p, r); | |
4943 | write_insn<big_endian>(p, std_0_1 + 16); | |
4944 | p = p + 4; | |
4945 | write_insn<big_endian>(p, blr); | |
4946 | return p + 4; | |
4947 | } | |
4948 | ||
4949 | template<bool big_endian> | |
62fe925a | 4950 | static unsigned char* |
f3a0ed29 AM |
4951 | restfpr(unsigned char* p, int r) |
4952 | { | |
4953 | uint32_t insn = lfd_0_1 + (r << 21) + (1 << 16) - (32 - r) * 8; | |
4954 | write_insn<big_endian>(p, insn); | |
4955 | return p + 4; | |
4956 | } | |
4957 | ||
4958 | template<bool big_endian> | |
62fe925a | 4959 | static unsigned char* |
f3a0ed29 AM |
4960 | restfpr0_tail(unsigned char* p, int r) |
4961 | { | |
4962 | write_insn<big_endian>(p, ld_0_1 + 16); | |
4963 | p = p + 4; | |
4964 | p = restfpr<big_endian>(p, r); | |
4965 | write_insn<big_endian>(p, mtlr_0); | |
4966 | p = p + 4; | |
4967 | if (r == 29) | |
4968 | { | |
4969 | p = restfpr<big_endian>(p, 30); | |
4970 | p = restfpr<big_endian>(p, 31); | |
4971 | } | |
4972 | write_insn<big_endian>(p, blr); | |
4973 | return p + 4; | |
4974 | } | |
4975 | ||
4976 | template<bool big_endian> | |
62fe925a | 4977 | static unsigned char* |
f3a0ed29 AM |
4978 | savefpr1_tail(unsigned char* p, int r) |
4979 | { | |
4980 | p = savefpr<big_endian>(p, r); | |
4981 | write_insn<big_endian>(p, blr); | |
4982 | return p + 4; | |
4983 | } | |
4984 | ||
4985 | template<bool big_endian> | |
62fe925a | 4986 | static unsigned char* |
f3a0ed29 AM |
4987 | restfpr1_tail(unsigned char* p, int r) |
4988 | { | |
4989 | p = restfpr<big_endian>(p, r); | |
4990 | write_insn<big_endian>(p, blr); | |
4991 | return p + 4; | |
4992 | } | |
4993 | ||
4994 | template<bool big_endian> | |
62fe925a | 4995 | static unsigned char* |
f3a0ed29 AM |
4996 | savevr(unsigned char* p, int r) |
4997 | { | |
4998 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
4999 | write_insn<big_endian>(p, insn); | |
5000 | p = p + 4; | |
5001 | insn = stvx_0_12_0 + (r << 21); | |
5002 | write_insn<big_endian>(p, insn); | |
5003 | return p + 4; | |
5004 | } | |
5005 | ||
5006 | template<bool big_endian> | |
62fe925a | 5007 | static unsigned char* |
f3a0ed29 AM |
5008 | savevr_tail(unsigned char* p, int r) |
5009 | { | |
5010 | p = savevr<big_endian>(p, r); | |
5011 | write_insn<big_endian>(p, blr); | |
5012 | return p + 4; | |
5013 | } | |
5014 | ||
5015 | template<bool big_endian> | |
62fe925a | 5016 | static unsigned char* |
f3a0ed29 AM |
5017 | restvr(unsigned char* p, int r) |
5018 | { | |
5019 | uint32_t insn = li_12_0 + (1 << 16) - (32 - r) * 16; | |
5020 | write_insn<big_endian>(p, insn); | |
5021 | p = p + 4; | |
5022 | insn = lvx_0_12_0 + (r << 21); | |
5023 | write_insn<big_endian>(p, insn); | |
5024 | return p + 4; | |
5025 | } | |
5026 | ||
5027 | template<bool big_endian> | |
62fe925a | 5028 | static unsigned char* |
f3a0ed29 AM |
5029 | restvr_tail(unsigned char* p, int r) |
5030 | { | |
5031 | p = restvr<big_endian>(p, r); | |
5032 | write_insn<big_endian>(p, blr); | |
5033 | return p + 4; | |
5034 | } | |
5035 | ||
5036 | ||
5037 | template<int size, bool big_endian> | |
5038 | Output_data_save_res<size, big_endian>::Output_data_save_res( | |
5039 | Symbol_table* symtab) | |
5040 | : Output_section_data_build(4), | |
5041 | contents_(NULL) | |
5042 | { | |
5043 | this->savres_define(symtab, | |
5044 | "_savegpr0_", 14, 31, | |
5045 | savegpr0<big_endian>, savegpr0_tail<big_endian>); | |
5046 | this->savres_define(symtab, | |
5047 | "_restgpr0_", 14, 29, | |
5048 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5049 | this->savres_define(symtab, | |
5050 | "_restgpr0_", 30, 31, | |
5051 | restgpr0<big_endian>, restgpr0_tail<big_endian>); | |
5052 | this->savres_define(symtab, | |
5053 | "_savegpr1_", 14, 31, | |
5054 | savegpr1<big_endian>, savegpr1_tail<big_endian>); | |
5055 | this->savres_define(symtab, | |
5056 | "_restgpr1_", 14, 31, | |
5057 | restgpr1<big_endian>, restgpr1_tail<big_endian>); | |
5058 | this->savres_define(symtab, | |
5059 | "_savefpr_", 14, 31, | |
5060 | savefpr<big_endian>, savefpr0_tail<big_endian>); | |
5061 | this->savres_define(symtab, | |
5062 | "_restfpr_", 14, 29, | |
5063 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5064 | this->savres_define(symtab, | |
5065 | "_restfpr_", 30, 31, | |
5066 | restfpr<big_endian>, restfpr0_tail<big_endian>); | |
5067 | this->savres_define(symtab, | |
5068 | "._savef", 14, 31, | |
5069 | savefpr<big_endian>, savefpr1_tail<big_endian>); | |
5070 | this->savres_define(symtab, | |
5071 | "._restf", 14, 31, | |
5072 | restfpr<big_endian>, restfpr1_tail<big_endian>); | |
5073 | this->savres_define(symtab, | |
5074 | "_savevr_", 20, 31, | |
5075 | savevr<big_endian>, savevr_tail<big_endian>); | |
5076 | this->savres_define(symtab, | |
5077 | "_restvr_", 20, 31, | |
5078 | restvr<big_endian>, restvr_tail<big_endian>); | |
5079 | } | |
5080 | ||
5081 | template<int size, bool big_endian> | |
5082 | void | |
5083 | Output_data_save_res<size, big_endian>::savres_define( | |
5084 | Symbol_table* symtab, | |
5085 | const char *name, | |
5086 | unsigned int lo, unsigned int hi, | |
5087 | unsigned char* write_ent(unsigned char*, int), | |
5088 | unsigned char* write_tail(unsigned char*, int)) | |
5089 | { | |
5090 | size_t len = strlen(name); | |
5091 | bool writing = false; | |
5092 | char sym[16]; | |
5093 | ||
5094 | memcpy(sym, name, len); | |
5095 | sym[len + 2] = 0; | |
5096 | ||
5097 | for (unsigned int i = lo; i <= hi; i++) | |
5098 | { | |
5099 | sym[len + 0] = i / 10 + '0'; | |
5100 | sym[len + 1] = i % 10 + '0'; | |
5101 | Symbol* gsym = symtab->lookup(sym); | |
5102 | bool refd = gsym != NULL && gsym->is_undefined(); | |
5103 | writing = writing || refd; | |
5104 | if (writing) | |
5105 | { | |
5106 | if (this->contents_ == NULL) | |
5107 | this->contents_ = new unsigned char[this->savres_max]; | |
5108 | ||
ec661b9d | 5109 | section_size_type value = this->current_data_size(); |
f3a0ed29 AM |
5110 | unsigned char* p = this->contents_ + value; |
5111 | if (i != hi) | |
5112 | p = write_ent(p, i); | |
5113 | else | |
5114 | p = write_tail(p, i); | |
ec661b9d | 5115 | section_size_type cur_size = p - this->contents_; |
f3a0ed29 AM |
5116 | this->set_current_data_size(cur_size); |
5117 | if (refd) | |
5118 | symtab->define_in_output_data(sym, NULL, Symbol_table::PREDEFINED, | |
5119 | this, value, cur_size - value, | |
5120 | elfcpp::STT_FUNC, elfcpp::STB_GLOBAL, | |
5121 | elfcpp::STV_HIDDEN, 0, false, false); | |
5122 | } | |
5123 | } | |
5124 | } | |
5125 | ||
5126 | // Write out save/restore. | |
5127 | ||
5128 | template<int size, bool big_endian> | |
5129 | void | |
5130 | Output_data_save_res<size, big_endian>::do_write(Output_file* of) | |
5131 | { | |
ec661b9d | 5132 | const section_size_type off = this->offset(); |
f3a0ed29 AM |
5133 | const section_size_type oview_size = |
5134 | convert_to_section_size_type(this->data_size()); | |
5135 | unsigned char* const oview = of->get_output_view(off, oview_size); | |
5136 | memcpy(oview, this->contents_, oview_size); | |
5137 | of->write_output_view(off, oview_size, oview); | |
5138 | } | |
5139 | ||
5140 | ||
cf43a2fe | 5141 | // Create the glink section. |
42cacb20 | 5142 | |
cf43a2fe AM |
5143 | template<int size, bool big_endian> |
5144 | void | |
5145 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
5146 | { | |
5147 | if (this->glink_ == NULL) | |
5148 | { | |
5149 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
9d5781f8 | 5150 | this->glink_->add_eh_frame(layout); |
cf43a2fe AM |
5151 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
5152 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
5153 | this->glink_, ORDER_TEXT, false); | |
5154 | } | |
42cacb20 DE |
5155 | } |
5156 | ||
5157 | // Create a PLT entry for a global symbol. | |
5158 | ||
5159 | template<int size, bool big_endian> | |
5160 | void | |
ec661b9d AM |
5161 | Target_powerpc<size, big_endian>::make_plt_entry(Symbol_table* symtab, |
5162 | Layout* layout, | |
5163 | Symbol* gsym) | |
42cacb20 | 5164 | { |
e5d5f5ed AM |
5165 | if (gsym->type() == elfcpp::STT_GNU_IFUNC |
5166 | && gsym->can_use_relative_reloc(false)) | |
5167 | { | |
5168 | if (this->iplt_ == NULL) | |
40b469d7 | 5169 | this->make_iplt_section(symtab, layout); |
03e25981 | 5170 | this->iplt_->add_ifunc_entry(gsym); |
e5d5f5ed AM |
5171 | } |
5172 | else | |
5173 | { | |
5174 | if (this->plt_ == NULL) | |
40b469d7 | 5175 | this->make_plt_section(symtab, layout); |
03e25981 | 5176 | this->plt_->add_entry(gsym); |
e5d5f5ed | 5177 | } |
e5d5f5ed | 5178 | } |
42cacb20 | 5179 | |
e5d5f5ed | 5180 | // Make a PLT entry for a local STT_GNU_IFUNC symbol. |
612a8d3d | 5181 | |
e5d5f5ed AM |
5182 | template<int size, bool big_endian> |
5183 | void | |
5184 | Target_powerpc<size, big_endian>::make_local_ifunc_plt_entry( | |
40b469d7 | 5185 | Symbol_table* symtab, |
e5d5f5ed | 5186 | Layout* layout, |
ec661b9d AM |
5187 | Sized_relobj_file<size, big_endian>* relobj, |
5188 | unsigned int r_sym) | |
e5d5f5ed AM |
5189 | { |
5190 | if (this->iplt_ == NULL) | |
40b469d7 | 5191 | this->make_iplt_section(symtab, layout); |
03e25981 | 5192 | this->iplt_->add_local_ifunc_entry(relobj, r_sym); |
42cacb20 DE |
5193 | } |
5194 | ||
0e70b911 CC |
5195 | // Return the number of entries in the PLT. |
5196 | ||
5197 | template<int size, bool big_endian> | |
5198 | unsigned int | |
5199 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
5200 | { | |
5201 | if (this->plt_ == NULL) | |
5202 | return 0; | |
b3ccdeb5 | 5203 | return this->plt_->entry_count(); |
0e70b911 CC |
5204 | } |
5205 | ||
dd93cd0a | 5206 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
5207 | |
5208 | template<int size, bool big_endian> | |
5209 | unsigned int | |
dd93cd0a | 5210 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
5211 | Symbol_table* symtab, |
5212 | Layout* layout, | |
5213 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 5214 | { |
dd93cd0a | 5215 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
5216 | { |
5217 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
5218 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
5219 | Output_data_got_powerpc<size, big_endian>* got |
5220 | = this->got_section(symtab, layout); | |
5221 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
5222 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
5223 | got_offset, 0); | |
dd93cd0a | 5224 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 5225 | } |
dd93cd0a | 5226 | return this->tlsld_got_offset_; |
42cacb20 DE |
5227 | } |
5228 | ||
95a2c8d6 RS |
5229 | // Get the Reference_flags for a particular relocation. |
5230 | ||
5231 | template<int size, bool big_endian> | |
5232 | int | |
88b8e639 AM |
5233 | Target_powerpc<size, big_endian>::Scan::get_reference_flags( |
5234 | unsigned int r_type, | |
5235 | const Target_powerpc* target) | |
95a2c8d6 | 5236 | { |
88b8e639 AM |
5237 | int ref = 0; |
5238 | ||
95a2c8d6 RS |
5239 | switch (r_type) |
5240 | { | |
5241 | case elfcpp::R_POWERPC_NONE: | |
5242 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5243 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
5244 | case elfcpp::R_PPC64_TOC: | |
5245 | // No symbol reference. | |
88b8e639 | 5246 | break; |
95a2c8d6 | 5247 | |
dd93cd0a AM |
5248 | case elfcpp::R_PPC64_ADDR64: |
5249 | case elfcpp::R_PPC64_UADDR64: | |
5250 | case elfcpp::R_POWERPC_ADDR32: | |
5251 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 5252 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 5253 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
5254 | case elfcpp::R_POWERPC_ADDR16_LO: |
5255 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5256 | case elfcpp::R_POWERPC_ADDR16_HA: | |
88b8e639 AM |
5257 | ref = Symbol::ABSOLUTE_REF; |
5258 | break; | |
95a2c8d6 | 5259 | |
dd93cd0a AM |
5260 | case elfcpp::R_POWERPC_ADDR24: |
5261 | case elfcpp::R_POWERPC_ADDR14: | |
5262 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5263 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
88b8e639 AM |
5264 | ref = Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; |
5265 | break; | |
dd93cd0a | 5266 | |
e5d5f5ed | 5267 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 5268 | case elfcpp::R_POWERPC_REL32: |
95a2c8d6 | 5269 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
5270 | case elfcpp::R_POWERPC_REL16: |
5271 | case elfcpp::R_POWERPC_REL16_LO: | |
5272 | case elfcpp::R_POWERPC_REL16_HI: | |
5273 | case elfcpp::R_POWERPC_REL16_HA: | |
88b8e639 AM |
5274 | ref = Symbol::RELATIVE_REF; |
5275 | break; | |
95a2c8d6 | 5276 | |
dd93cd0a | 5277 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 5278 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
5279 | case elfcpp::R_POWERPC_REL14: |
5280 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5281 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
88b8e639 AM |
5282 | ref = Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
5283 | break; | |
95a2c8d6 RS |
5284 | |
5285 | case elfcpp::R_POWERPC_GOT16: | |
5286 | case elfcpp::R_POWERPC_GOT16_LO: | |
5287 | case elfcpp::R_POWERPC_GOT16_HI: | |
5288 | case elfcpp::R_POWERPC_GOT16_HA: | |
e5d5f5ed AM |
5289 | case elfcpp::R_PPC64_GOT16_DS: |
5290 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
95a2c8d6 RS |
5291 | case elfcpp::R_PPC64_TOC16: |
5292 | case elfcpp::R_PPC64_TOC16_LO: | |
5293 | case elfcpp::R_PPC64_TOC16_HI: | |
5294 | case elfcpp::R_PPC64_TOC16_HA: | |
5295 | case elfcpp::R_PPC64_TOC16_DS: | |
5296 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
5297 | // Absolute in GOT. | |
88b8e639 AM |
5298 | ref = Symbol::ABSOLUTE_REF; |
5299 | break; | |
95a2c8d6 RS |
5300 | |
5301 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5302 | case elfcpp::R_POWERPC_TLS: | |
88b8e639 AM |
5303 | ref = Symbol::TLS_REF; |
5304 | break; | |
95a2c8d6 RS |
5305 | |
5306 | case elfcpp::R_POWERPC_COPY: | |
5307 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5308 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5309 | case elfcpp::R_POWERPC_RELATIVE: | |
5310 | case elfcpp::R_POWERPC_DTPMOD: | |
5311 | default: | |
5312 | // Not expected. We will give an error later. | |
88b8e639 | 5313 | break; |
95a2c8d6 | 5314 | } |
88b8e639 AM |
5315 | |
5316 | if (size == 64 && target->abiversion() < 2) | |
5317 | ref |= Symbol::FUNC_DESC_ABI; | |
5318 | return ref; | |
95a2c8d6 RS |
5319 | } |
5320 | ||
42cacb20 DE |
5321 | // Report an unsupported relocation against a local symbol. |
5322 | ||
5323 | template<int size, bool big_endian> | |
5324 | void | |
5325 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
5326 | Sized_relobj_file<size, big_endian>* object, |
5327 | unsigned int r_type) | |
42cacb20 DE |
5328 | { |
5329 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
5330 | object->name().c_str(), r_type); | |
5331 | } | |
5332 | ||
5333 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
5334 | // dynamic linker does not support it, issue an error. | |
5335 | ||
5336 | template<int size, bool big_endian> | |
5337 | void | |
5338 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
5339 | unsigned int r_type) | |
5340 | { | |
5341 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
5342 | ||
5343 | // These are the relocation types supported by glibc for both 32-bit | |
5344 | // and 64-bit powerpc. | |
5345 | switch (r_type) | |
5346 | { | |
3ea0a085 | 5347 | case elfcpp::R_POWERPC_NONE: |
42cacb20 DE |
5348 | case elfcpp::R_POWERPC_RELATIVE: |
5349 | case elfcpp::R_POWERPC_GLOB_DAT: | |
5350 | case elfcpp::R_POWERPC_DTPMOD: | |
5351 | case elfcpp::R_POWERPC_DTPREL: | |
5352 | case elfcpp::R_POWERPC_TPREL: | |
5353 | case elfcpp::R_POWERPC_JMP_SLOT: | |
5354 | case elfcpp::R_POWERPC_COPY: | |
3ea0a085 | 5355 | case elfcpp::R_POWERPC_IRELATIVE: |
42cacb20 | 5356 | case elfcpp::R_POWERPC_ADDR32: |
3ea0a085 | 5357 | case elfcpp::R_POWERPC_UADDR32: |
42cacb20 | 5358 | case elfcpp::R_POWERPC_ADDR24: |
3ea0a085 AM |
5359 | case elfcpp::R_POWERPC_ADDR16: |
5360 | case elfcpp::R_POWERPC_UADDR16: | |
5361 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5362 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5363 | case elfcpp::R_POWERPC_ADDR16_HA: | |
5364 | case elfcpp::R_POWERPC_ADDR14: | |
5365 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5366 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5367 | case elfcpp::R_POWERPC_REL32: | |
42cacb20 | 5368 | case elfcpp::R_POWERPC_REL24: |
3ea0a085 AM |
5369 | case elfcpp::R_POWERPC_TPREL16: |
5370 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5371 | case elfcpp::R_POWERPC_TPREL16_HI: | |
5372 | case elfcpp::R_POWERPC_TPREL16_HA: | |
42cacb20 DE |
5373 | return; |
5374 | ||
5375 | default: | |
5376 | break; | |
5377 | } | |
5378 | ||
5379 | if (size == 64) | |
5380 | { | |
5381 | switch (r_type) | |
5382 | { | |
5383 | // These are the relocation types supported only on 64-bit. | |
5384 | case elfcpp::R_PPC64_ADDR64: | |
42cacb20 | 5385 | case elfcpp::R_PPC64_UADDR64: |
3ea0a085 | 5386 | case elfcpp::R_PPC64_JMP_IREL: |
42cacb20 | 5387 | case elfcpp::R_PPC64_ADDR16_DS: |
3ea0a085 | 5388 | case elfcpp::R_PPC64_ADDR16_LO_DS: |
f9c6b907 AM |
5389 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5390 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
42cacb20 DE |
5391 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5392 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5393 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5394 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
42cacb20 | 5395 | case elfcpp::R_PPC64_REL64: |
3ea0a085 AM |
5396 | case elfcpp::R_POWERPC_ADDR30: |
5397 | case elfcpp::R_PPC64_TPREL16_DS: | |
5398 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5399 | case elfcpp::R_PPC64_TPREL16_HIGH: |
5400 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
3ea0a085 AM |
5401 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
5402 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
5403 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
5404 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
42cacb20 DE |
5405 | return; |
5406 | ||
5407 | default: | |
5408 | break; | |
5409 | } | |
5410 | } | |
5411 | else | |
5412 | { | |
5413 | switch (r_type) | |
5414 | { | |
5415 | // These are the relocation types supported only on 32-bit. | |
3ea0a085 AM |
5416 | // ??? glibc ld.so doesn't need to support these. |
5417 | case elfcpp::R_POWERPC_DTPREL16: | |
5418 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5419 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5420 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
5421 | return; | |
42cacb20 DE |
5422 | |
5423 | default: | |
5424 | break; | |
5425 | } | |
5426 | } | |
5427 | ||
5428 | // This prevents us from issuing more than one error per reloc | |
5429 | // section. But we can still wind up issuing more than one | |
5430 | // error per object file. | |
5431 | if (this->issued_non_pic_error_) | |
5432 | return; | |
33aea2fd | 5433 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
5434 | object->error(_("requires unsupported dynamic reloc; " |
5435 | "recompile with -fPIC")); | |
5436 | this->issued_non_pic_error_ = true; | |
5437 | return; | |
5438 | } | |
5439 | ||
e5d5f5ed AM |
5440 | // Return whether we need to make a PLT entry for a relocation of the |
5441 | // given type against a STT_GNU_IFUNC symbol. | |
5442 | ||
5443 | template<int size, bool big_endian> | |
5444 | bool | |
5445 | Target_powerpc<size, big_endian>::Scan::reloc_needs_plt_for_ifunc( | |
9055360d | 5446 | Target_powerpc<size, big_endian>* target, |
e5d5f5ed | 5447 | Sized_relobj_file<size, big_endian>* object, |
b3ccdeb5 AM |
5448 | unsigned int r_type, |
5449 | bool report_err) | |
e5d5f5ed | 5450 | { |
c9824451 AM |
5451 | // In non-pic code any reference will resolve to the plt call stub |
5452 | // for the ifunc symbol. | |
9055360d AM |
5453 | if ((size == 32 || target->abiversion() >= 2) |
5454 | && !parameters->options().output_is_position_independent()) | |
c9824451 AM |
5455 | return true; |
5456 | ||
e5d5f5ed AM |
5457 | switch (r_type) |
5458 | { | |
b3ccdeb5 | 5459 | // Word size refs from data sections are OK, but don't need a PLT entry. |
e5d5f5ed AM |
5460 | case elfcpp::R_POWERPC_ADDR32: |
5461 | case elfcpp::R_POWERPC_UADDR32: | |
5462 | if (size == 32) | |
b3ccdeb5 | 5463 | return false; |
e5d5f5ed AM |
5464 | break; |
5465 | ||
5466 | case elfcpp::R_PPC64_ADDR64: | |
5467 | case elfcpp::R_PPC64_UADDR64: | |
5468 | if (size == 64) | |
b3ccdeb5 | 5469 | return false; |
e5d5f5ed AM |
5470 | break; |
5471 | ||
b3ccdeb5 | 5472 | // GOT refs are good, but also don't need a PLT entry. |
e5d5f5ed AM |
5473 | case elfcpp::R_POWERPC_GOT16: |
5474 | case elfcpp::R_POWERPC_GOT16_LO: | |
5475 | case elfcpp::R_POWERPC_GOT16_HI: | |
5476 | case elfcpp::R_POWERPC_GOT16_HA: | |
5477 | case elfcpp::R_PPC64_GOT16_DS: | |
5478 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
b3ccdeb5 | 5479 | return false; |
e5d5f5ed | 5480 | |
b3ccdeb5 | 5481 | // Function calls are good, and these do need a PLT entry. |
e5d5f5ed AM |
5482 | case elfcpp::R_POWERPC_ADDR24: |
5483 | case elfcpp::R_POWERPC_ADDR14: | |
5484 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5485 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
5486 | case elfcpp::R_POWERPC_REL24: | |
5487 | case elfcpp::R_PPC_PLTREL24: | |
5488 | case elfcpp::R_POWERPC_REL14: | |
5489 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5490 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
5491 | return true; | |
5492 | ||
5493 | default: | |
5494 | break; | |
5495 | } | |
5496 | ||
5497 | // Anything else is a problem. | |
5498 | // If we are building a static executable, the libc startup function | |
5499 | // responsible for applying indirect function relocations is going | |
5500 | // to complain about the reloc type. | |
5501 | // If we are building a dynamic executable, we will have a text | |
5502 | // relocation. The dynamic loader will set the text segment | |
5503 | // writable and non-executable to apply text relocations. So we'll | |
5504 | // segfault when trying to run the indirection function to resolve | |
5505 | // the reloc. | |
b3ccdeb5 AM |
5506 | if (report_err) |
5507 | gold_error(_("%s: unsupported reloc %u for IFUNC symbol"), | |
e5d5f5ed AM |
5508 | object->name().c_str(), r_type); |
5509 | return false; | |
5510 | } | |
5511 | ||
42cacb20 DE |
5512 | // Scan a relocation for a local symbol. |
5513 | ||
5514 | template<int size, bool big_endian> | |
5515 | inline void | |
5516 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
5517 | Symbol_table* symtab, |
5518 | Layout* layout, | |
5519 | Target_powerpc<size, big_endian>* target, | |
5520 | Sized_relobj_file<size, big_endian>* object, | |
5521 | unsigned int data_shndx, | |
5522 | Output_section* output_section, | |
5523 | const elfcpp::Rela<size, big_endian>& reloc, | |
5524 | unsigned int r_type, | |
e5d5f5ed | 5525 | const elfcpp::Sym<size, big_endian>& lsym, |
bfdfa4cd | 5526 | bool is_discarded) |
42cacb20 | 5527 | { |
e3deeb9c AM |
5528 | this->maybe_skip_tls_get_addr_call(r_type, NULL); |
5529 | ||
5530 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5531 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5532 | { | |
5533 | this->expect_tls_get_addr_call(); | |
5534 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5535 | if (tls_type != tls::TLSOPT_NONE) | |
5536 | this->skip_next_tls_get_addr_call(); | |
5537 | } | |
5538 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5539 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5540 | { | |
5541 | this->expect_tls_get_addr_call(); | |
5542 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5543 | if (tls_type != tls::TLSOPT_NONE) | |
5544 | this->skip_next_tls_get_addr_call(); | |
5545 | } | |
5546 | ||
dd93cd0a AM |
5547 | Powerpc_relobj<size, big_endian>* ppc_object |
5548 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
5549 | ||
bfdfa4cd AM |
5550 | if (is_discarded) |
5551 | { | |
5552 | if (size == 64 | |
5553 | && data_shndx == ppc_object->opd_shndx() | |
5554 | && r_type == elfcpp::R_PPC64_ADDR64) | |
5555 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
5556 | return; | |
5557 | } | |
5558 | ||
e5d5f5ed AM |
5559 | // A local STT_GNU_IFUNC symbol may require a PLT entry. |
5560 | bool is_ifunc = lsym.get_st_type() == elfcpp::STT_GNU_IFUNC; | |
9055360d | 5561 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) |
40b469d7 | 5562 | { |
ec661b9d AM |
5563 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
5564 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5565 | r_type, r_sym, reloc.get_r_addend()); | |
5566 | target->make_local_ifunc_plt_entry(symtab, layout, object, r_sym); | |
40b469d7 | 5567 | } |
e5d5f5ed | 5568 | |
42cacb20 DE |
5569 | switch (r_type) |
5570 | { | |
5571 | case elfcpp::R_POWERPC_NONE: | |
5572 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5573 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6ce78956 | 5574 | case elfcpp::R_PPC64_TOCSAVE: |
7404fe1b | 5575 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
5576 | break; |
5577 | ||
5578 | case elfcpp::R_PPC64_TOC: | |
5579 | { | |
5580 | Output_data_got_powerpc<size, big_endian>* got | |
5581 | = target->got_section(symtab, layout); | |
5582 | if (parameters->options().output_is_position_independent()) | |
5583 | { | |
bfdfa4cd AM |
5584 | Address off = reloc.get_r_offset(); |
5585 | if (size == 64 | |
9055360d | 5586 | && target->abiversion() < 2 |
bfdfa4cd AM |
5587 | && data_shndx == ppc_object->opd_shndx() |
5588 | && ppc_object->get_opd_discard(off - 8)) | |
5589 | break; | |
5590 | ||
dd93cd0a | 5591 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
bfdfa4cd | 5592 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; |
dd93cd0a AM |
5593 | rela_dyn->add_output_section_relative(got->output_section(), |
5594 | elfcpp::R_POWERPC_RELATIVE, | |
5595 | output_section, | |
bfdfa4cd AM |
5596 | object, data_shndx, off, |
5597 | symobj->toc_base_offset()); | |
dd93cd0a AM |
5598 | } |
5599 | } | |
42cacb20 DE |
5600 | break; |
5601 | ||
5602 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 5603 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 5604 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
5605 | case elfcpp::R_POWERPC_UADDR32: |
5606 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 5607 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 5608 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
5609 | case elfcpp::R_POWERPC_ADDR16_HI: |
5610 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 5611 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
5612 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5613 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
5614 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
5615 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
5616 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
5617 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
5618 | case elfcpp::R_PPC64_ADDR16_DS: | |
5619 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
5620 | case elfcpp::R_POWERPC_ADDR14: | |
5621 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
5622 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
5623 | // If building a shared library (or a position-independent |
5624 | // executable), we need to create a dynamic relocation for | |
5625 | // this location. | |
c9824451 | 5626 | if (parameters->options().output_is_position_independent() |
9055360d | 5627 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
2e702c99 | 5628 | { |
b3ccdeb5 AM |
5629 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5630 | is_ifunc); | |
1f98a074 | 5631 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
5632 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
5633 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 | 5634 | { |
b3ccdeb5 AM |
5635 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
5636 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5637 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
dd93cd0a AM |
5638 | output_section, data_shndx, |
5639 | reloc.get_r_offset(), | |
c9824451 | 5640 | reloc.get_r_addend(), false); |
2e702c99 | 5641 | } |
1f98a074 | 5642 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) |
2e702c99 | 5643 | { |
dd93cd0a | 5644 | check_non_pic(object, r_type); |
dd93cd0a AM |
5645 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
5646 | data_shndx, reloc.get_r_offset(), | |
5647 | reloc.get_r_addend()); | |
2e702c99 | 5648 | } |
1f98a074 AM |
5649 | else |
5650 | { | |
5651 | gold_assert(lsym.get_st_value() == 0); | |
5652 | unsigned int shndx = lsym.get_st_shndx(); | |
5653 | bool is_ordinary; | |
5654 | shndx = object->adjust_sym_shndx(r_sym, shndx, | |
5655 | &is_ordinary); | |
5656 | if (!is_ordinary) | |
5657 | object->error(_("section symbol %u has bad shndx %u"), | |
5658 | r_sym, shndx); | |
5659 | else | |
5660 | rela_dyn->add_local_section(object, shndx, r_type, | |
5661 | output_section, data_shndx, | |
5662 | reloc.get_r_offset()); | |
5663 | } | |
2e702c99 | 5664 | } |
42cacb20 DE |
5665 | break; |
5666 | ||
5667 | case elfcpp::R_POWERPC_REL24: | |
c9824451 | 5668 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 5669 | case elfcpp::R_PPC_LOCAL24PC: |
ec661b9d AM |
5670 | case elfcpp::R_POWERPC_REL14: |
5671 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
5672 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 AM |
5673 | if (!is_ifunc) |
5674 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5675 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
5676 | reloc.get_r_addend()); | |
ec661b9d AM |
5677 | break; |
5678 | ||
5679 | case elfcpp::R_PPC64_REL64: | |
5680 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 5681 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 5682 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 5683 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 5684 | case elfcpp::R_POWERPC_REL16_HA: |
dd93cd0a | 5685 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 5686 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 5687 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 5688 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
5689 | case elfcpp::R_PPC64_SECTOFF_DS: |
5690 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
5691 | case elfcpp::R_POWERPC_TPREL16: | |
5692 | case elfcpp::R_POWERPC_TPREL16_LO: | |
5693 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 5694 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
5695 | case elfcpp::R_PPC64_TPREL16_DS: |
5696 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
5697 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
5698 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 5699 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 5700 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 5701 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 5702 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
5703 | case elfcpp::R_POWERPC_DTPREL16: |
5704 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
5705 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
5706 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
5707 | case elfcpp::R_PPC64_DTPREL16_DS: |
5708 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5709 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
5710 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
5711 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
5712 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
5713 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
5714 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
5715 | case elfcpp::R_PPC64_TLSGD: |
5716 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 5717 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
42cacb20 DE |
5718 | break; |
5719 | ||
5720 | case elfcpp::R_POWERPC_GOT16: | |
5721 | case elfcpp::R_POWERPC_GOT16_LO: | |
5722 | case elfcpp::R_POWERPC_GOT16_HI: | |
5723 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
5724 | case elfcpp::R_PPC64_GOT16_DS: |
5725 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 5726 | { |
c9269dff | 5727 | // The symbol requires a GOT entry. |
dd93cd0a AM |
5728 | Output_data_got_powerpc<size, big_endian>* got |
5729 | = target->got_section(symtab, layout); | |
5730 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 | 5731 | |
e5d5f5ed | 5732 | if (!parameters->options().output_is_position_independent()) |
42cacb20 | 5733 | { |
b01a4b04 AM |
5734 | if (is_ifunc |
5735 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
5736 | got->add_local_plt(object, r_sym, GOT_TYPE_STANDARD); |
5737 | else | |
5738 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
5739 | } | |
5740 | else if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
5741 | { | |
5742 | // If we are generating a shared object or a pie, this | |
5743 | // symbol's GOT entry will be set by a dynamic relocation. | |
5744 | unsigned int off; | |
5745 | off = got->add_constant(0); | |
5746 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
42cacb20 | 5747 | |
b3ccdeb5 AM |
5748 | Reloc_section* rela_dyn = target->rela_dyn_section(symtab, layout, |
5749 | is_ifunc); | |
5750 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
5751 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed | 5752 | rela_dyn->add_local_relative(object, r_sym, dynrel, |
c9824451 | 5753 | got, off, 0, false); |
2e702c99 | 5754 | } |
42cacb20 DE |
5755 | } |
5756 | break; | |
5757 | ||
cf43a2fe AM |
5758 | case elfcpp::R_PPC64_TOC16: |
5759 | case elfcpp::R_PPC64_TOC16_LO: | |
5760 | case elfcpp::R_PPC64_TOC16_HI: | |
5761 | case elfcpp::R_PPC64_TOC16_HA: | |
5762 | case elfcpp::R_PPC64_TOC16_DS: | |
5763 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
5764 | // We need a GOT section. |
5765 | target->got_section(symtab, layout); | |
5766 | break; | |
5767 | ||
dd93cd0a AM |
5768 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
5769 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
5770 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
5771 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
5772 | { | |
5773 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
5774 | if (tls_type == tls::TLSOPT_NONE) | |
5775 | { | |
5776 | Output_data_got_powerpc<size, big_endian>* got | |
5777 | = target->got_section(symtab, layout); | |
5778 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d AM |
5779 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
5780 | got->add_local_tls_pair(object, r_sym, GOT_TYPE_TLSGD, | |
5781 | rela_dyn, elfcpp::R_POWERPC_DTPMOD); | |
dd93cd0a AM |
5782 | } |
5783 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5784 | { | |
5785 | // no GOT relocs needed for Local Exec. | |
5786 | } | |
5787 | else | |
5788 | gold_unreachable(); | |
5789 | } | |
42cacb20 DE |
5790 | break; |
5791 | ||
dd93cd0a AM |
5792 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
5793 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
5794 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
5795 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
5796 | { | |
5797 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5798 | if (tls_type == tls::TLSOPT_NONE) | |
5799 | target->tlsld_got_offset(symtab, layout, object); | |
5800 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5801 | { | |
5802 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
5803 | if (parameters->options().emit_relocs()) |
5804 | { | |
5805 | Output_section* os = layout->tls_segment()->first_section(); | |
5806 | gold_assert(os != NULL); | |
5807 | os->set_needs_symtab_index(); | |
5808 | } | |
dd93cd0a AM |
5809 | } |
5810 | else | |
5811 | gold_unreachable(); | |
5812 | } | |
42cacb20 | 5813 | break; |
42cacb20 | 5814 | |
dd93cd0a AM |
5815 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
5816 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
5817 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
5818 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
5819 | { | |
5820 | Output_data_got_powerpc<size, big_endian>* got | |
5821 | = target->got_section(symtab, layout); | |
5822 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
bd73a62d | 5823 | got->add_local_tls(object, r_sym, GOT_TYPE_DTPREL); |
dd93cd0a AM |
5824 | } |
5825 | break; | |
42cacb20 | 5826 | |
dd93cd0a AM |
5827 | case elfcpp::R_POWERPC_GOT_TPREL16: |
5828 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
5829 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
5830 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
5831 | { | |
5832 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
5833 | if (tls_type == tls::TLSOPT_NONE) | |
5834 | { | |
dd93cd0a | 5835 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
acc276d8 AM |
5836 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)) |
5837 | { | |
5838 | Output_data_got_powerpc<size, big_endian>* got | |
5839 | = target->got_section(symtab, layout); | |
5840 | unsigned int off = got->add_constant(0); | |
5841 | object->set_local_got_offset(r_sym, GOT_TYPE_TPREL, off); | |
5842 | ||
5843 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
5844 | rela_dyn->add_symbolless_local_addend(object, r_sym, | |
5845 | elfcpp::R_POWERPC_TPREL, | |
5846 | got, off, 0); | |
5847 | } | |
dd93cd0a AM |
5848 | } |
5849 | else if (tls_type == tls::TLSOPT_TO_LE) | |
5850 | { | |
5851 | // no GOT relocs needed for Local Exec. | |
5852 | } | |
5853 | else | |
5854 | gold_unreachable(); | |
5855 | } | |
5856 | break; | |
5857 | ||
5858 | default: | |
5859 | unsupported_reloc_local(object, r_type); | |
5860 | break; | |
5861 | } | |
d8f5a274 AM |
5862 | |
5863 | switch (r_type) | |
5864 | { | |
5865 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
5866 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
5867 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
5868 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
5869 | case elfcpp::R_POWERPC_GOT16: | |
5870 | case elfcpp::R_PPC64_GOT16_DS: | |
5871 | case elfcpp::R_PPC64_TOC16: | |
5872 | case elfcpp::R_PPC64_TOC16_DS: | |
5873 | ppc_object->set_has_small_toc_reloc(); | |
5874 | default: | |
5875 | break; | |
5876 | } | |
dd93cd0a AM |
5877 | } |
5878 | ||
5879 | // Report an unsupported relocation against a global symbol. | |
5880 | ||
5881 | template<int size, bool big_endian> | |
5882 | void | |
5883 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
5884 | Sized_relobj_file<size, big_endian>* object, | |
5885 | unsigned int r_type, | |
5886 | Symbol* gsym) | |
5887 | { | |
42cacb20 DE |
5888 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
5889 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
5890 | } | |
5891 | ||
5892 | // Scan a relocation for a global symbol. | |
5893 | ||
5894 | template<int size, bool big_endian> | |
5895 | inline void | |
5896 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
5897 | Symbol_table* symtab, |
5898 | Layout* layout, | |
5899 | Target_powerpc<size, big_endian>* target, | |
5900 | Sized_relobj_file<size, big_endian>* object, | |
5901 | unsigned int data_shndx, | |
5902 | Output_section* output_section, | |
5903 | const elfcpp::Rela<size, big_endian>& reloc, | |
5904 | unsigned int r_type, | |
5905 | Symbol* gsym) | |
42cacb20 | 5906 | { |
e3deeb9c AM |
5907 | if (this->maybe_skip_tls_get_addr_call(r_type, gsym) == Track_tls::SKIP) |
5908 | return; | |
5909 | ||
5910 | if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
5911 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
5912 | { | |
5913 | this->expect_tls_get_addr_call(); | |
5914 | const bool final = gsym->final_value_is_known(); | |
5915 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
5916 | if (tls_type != tls::TLSOPT_NONE) | |
5917 | this->skip_next_tls_get_addr_call(); | |
5918 | } | |
5919 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
5920 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
5921 | { | |
5922 | this->expect_tls_get_addr_call(); | |
5923 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
5924 | if (tls_type != tls::TLSOPT_NONE) | |
5925 | this->skip_next_tls_get_addr_call(); | |
5926 | } | |
5927 | ||
dd93cd0a AM |
5928 | Powerpc_relobj<size, big_endian>* ppc_object |
5929 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
5930 | ||
e5d5f5ed | 5931 | // A STT_GNU_IFUNC symbol may require a PLT entry. |
b3ccdeb5 | 5932 | bool is_ifunc = gsym->type() == elfcpp::STT_GNU_IFUNC; |
9055360d AM |
5933 | bool pushed_ifunc = false; |
5934 | if (is_ifunc && this->reloc_needs_plt_for_ifunc(target, object, r_type, true)) | |
ec661b9d AM |
5935 | { |
5936 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
5937 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
5938 | reloc.get_r_addend()); | |
5939 | target->make_plt_entry(symtab, layout, gsym); | |
9055360d | 5940 | pushed_ifunc = true; |
ec661b9d | 5941 | } |
e5d5f5ed | 5942 | |
42cacb20 DE |
5943 | switch (r_type) |
5944 | { | |
5945 | case elfcpp::R_POWERPC_NONE: | |
5946 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
5947 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 5948 | case elfcpp::R_PPC_LOCAL24PC: |
7404fe1b | 5949 | case elfcpp::R_POWERPC_TLS: |
dd93cd0a AM |
5950 | break; |
5951 | ||
5952 | case elfcpp::R_PPC64_TOC: | |
5953 | { | |
5954 | Output_data_got_powerpc<size, big_endian>* got | |
5955 | = target->got_section(symtab, layout); | |
5956 | if (parameters->options().output_is_position_independent()) | |
5957 | { | |
bfdfa4cd AM |
5958 | Address off = reloc.get_r_offset(); |
5959 | if (size == 64 | |
5960 | && data_shndx == ppc_object->opd_shndx() | |
5961 | && ppc_object->get_opd_discard(off - 8)) | |
5962 | break; | |
5963 | ||
dd93cd0a AM |
5964 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
5965 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
5966 | if (data_shndx != ppc_object->opd_shndx()) | |
5967 | symobj = static_cast | |
5968 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
5969 | rela_dyn->add_output_section_relative(got->output_section(), | |
5970 | elfcpp::R_POWERPC_RELATIVE, | |
5971 | output_section, | |
bfdfa4cd | 5972 | object, data_shndx, off, |
dd93cd0a AM |
5973 | symobj->toc_base_offset()); |
5974 | } | |
5975 | } | |
42cacb20 DE |
5976 | break; |
5977 | ||
c9269dff | 5978 | case elfcpp::R_PPC64_ADDR64: |
bfdfa4cd | 5979 | if (size == 64 |
9055360d | 5980 | && target->abiversion() < 2 |
bfdfa4cd AM |
5981 | && data_shndx == ppc_object->opd_shndx() |
5982 | && (gsym->is_defined_in_discarded_section() | |
5983 | || gsym->object() != object)) | |
5984 | { | |
5985 | ppc_object->set_opd_discard(reloc.get_r_offset()); | |
5986 | break; | |
5987 | } | |
5988 | // Fall thru | |
dd93cd0a | 5989 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 5990 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
5991 | case elfcpp::R_POWERPC_UADDR32: |
5992 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
5993 | case elfcpp::R_POWERPC_ADDR16: |
5994 | case elfcpp::R_POWERPC_ADDR16_LO: | |
5995 | case elfcpp::R_POWERPC_ADDR16_HI: | |
5996 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a | 5997 | case elfcpp::R_POWERPC_UADDR16: |
f9c6b907 AM |
5998 | case elfcpp::R_PPC64_ADDR16_HIGH: |
5999 | case elfcpp::R_PPC64_ADDR16_HIGHA: | |
dd93cd0a AM |
6000 | case elfcpp::R_PPC64_ADDR16_HIGHER: |
6001 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
6002 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
6003 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
6004 | case elfcpp::R_PPC64_ADDR16_DS: | |
6005 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
6006 | case elfcpp::R_POWERPC_ADDR14: | |
6007 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
6008 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 6009 | { |
c9269dff AM |
6010 | // Make a PLT entry if necessary. |
6011 | if (gsym->needs_plt_entry()) | |
6012 | { | |
9055360d AM |
6013 | // Since this is not a PC-relative relocation, we may be |
6014 | // taking the address of a function. In that case we need to | |
6015 | // set the entry in the dynamic symbol table to the address of | |
6016 | // the PLT call stub. | |
6017 | bool need_ifunc_plt = false; | |
6018 | if ((size == 32 || target->abiversion() >= 2) | |
6019 | && gsym->is_from_dynobj() | |
6020 | && !parameters->options().output_is_position_independent()) | |
6021 | { | |
6022 | gsym->set_needs_dynsym_value(); | |
6023 | need_ifunc_plt = true; | |
6024 | } | |
6025 | if (!is_ifunc || (!pushed_ifunc && need_ifunc_plt)) | |
b3ccdeb5 AM |
6026 | { |
6027 | target->push_branch(ppc_object, data_shndx, | |
6028 | reloc.get_r_offset(), r_type, | |
6029 | elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
6030 | reloc.get_r_addend()); | |
6031 | target->make_plt_entry(symtab, layout, gsym); | |
6032 | } | |
c9269dff AM |
6033 | } |
6034 | // Make a dynamic relocation if necessary. | |
88b8e639 | 6035 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target)) |
9055360d | 6036 | || (size == 64 && is_ifunc && target->abiversion() < 2)) |
c9269dff | 6037 | { |
a82bef93 ST |
6038 | if (!parameters->options().output_is_position_independent() |
6039 | && gsym->may_need_copy_reloc()) | |
c9269dff AM |
6040 | { |
6041 | target->copy_reloc(symtab, layout, object, | |
6042 | data_shndx, output_section, gsym, reloc); | |
6043 | } | |
9055360d AM |
6044 | else if ((((size == 32 |
6045 | && r_type == elfcpp::R_POWERPC_ADDR32) | |
6046 | || (size == 64 | |
6047 | && r_type == elfcpp::R_PPC64_ADDR64 | |
6048 | && target->abiversion() >= 2)) | |
627b30b7 AM |
6049 | && gsym->can_use_relative_reloc(false) |
6050 | && !(gsym->visibility() == elfcpp::STV_PROTECTED | |
6051 | && parameters->options().shared())) | |
6052 | || (size == 64 | |
6053 | && r_type == elfcpp::R_PPC64_ADDR64 | |
9055360d | 6054 | && target->abiversion() < 2 |
627b30b7 AM |
6055 | && (gsym->can_use_relative_reloc(false) |
6056 | || data_shndx == ppc_object->opd_shndx()))) | |
2e702c99 | 6057 | { |
b3ccdeb5 AM |
6058 | Reloc_section* rela_dyn |
6059 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6060 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE | |
6061 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6062 | rela_dyn->add_symbolless_global_addend( |
6063 | gsym, dynrel, output_section, object, data_shndx, | |
6064 | reloc.get_r_offset(), reloc.get_r_addend()); | |
2e702c99 RM |
6065 | } |
6066 | else | |
6067 | { | |
b3ccdeb5 AM |
6068 | Reloc_section* rela_dyn |
6069 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
42cacb20 | 6070 | check_non_pic(object, r_type); |
dd93cd0a AM |
6071 | rela_dyn->add_global(gsym, r_type, output_section, |
6072 | object, data_shndx, | |
6073 | reloc.get_r_offset(), | |
6074 | reloc.get_r_addend()); | |
2e702c99 RM |
6075 | } |
6076 | } | |
42cacb20 DE |
6077 | } |
6078 | break; | |
6079 | ||
cf43a2fe | 6080 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 6081 | case elfcpp::R_POWERPC_REL24: |
b3ccdeb5 AM |
6082 | if (!is_ifunc) |
6083 | { | |
6084 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6085 | r_type, | |
6086 | elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
6087 | reloc.get_r_addend()); | |
6088 | if (gsym->needs_plt_entry() | |
6089 | || (!gsym->final_value_is_known() | |
6090 | && (gsym->is_undefined() | |
6091 | || gsym->is_from_dynobj() | |
6092 | || gsym->is_preemptible()))) | |
6093 | target->make_plt_entry(symtab, layout, gsym); | |
6094 | } | |
3ea0a085 | 6095 | // Fall thru |
42cacb20 | 6096 | |
3ea0a085 | 6097 | case elfcpp::R_PPC64_REL64: |
dd93cd0a | 6098 | case elfcpp::R_POWERPC_REL32: |
3ea0a085 | 6099 | // Make a dynamic relocation if necessary. |
88b8e639 | 6100 | if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type, target))) |
3ea0a085 | 6101 | { |
a82bef93 ST |
6102 | if (!parameters->options().output_is_position_independent() |
6103 | && gsym->may_need_copy_reloc()) | |
3ea0a085 AM |
6104 | { |
6105 | target->copy_reloc(symtab, layout, object, | |
6106 | data_shndx, output_section, gsym, | |
6107 | reloc); | |
6108 | } | |
6109 | else | |
6110 | { | |
b3ccdeb5 AM |
6111 | Reloc_section* rela_dyn |
6112 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
3ea0a085 AM |
6113 | check_non_pic(object, r_type); |
6114 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
6115 | data_shndx, reloc.get_r_offset(), | |
6116 | reloc.get_r_addend()); | |
6117 | } | |
6118 | } | |
6119 | break; | |
6120 | ||
ec661b9d AM |
6121 | case elfcpp::R_POWERPC_REL14: |
6122 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
6123 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
b3ccdeb5 AM |
6124 | if (!is_ifunc) |
6125 | target->push_branch(ppc_object, data_shndx, reloc.get_r_offset(), | |
6126 | r_type, elfcpp::elf_r_sym<size>(reloc.get_r_info()), | |
6127 | reloc.get_r_addend()); | |
ec661b9d AM |
6128 | break; |
6129 | ||
6ce78956 AM |
6130 | case elfcpp::R_POWERPC_REL16: |
6131 | case elfcpp::R_POWERPC_REL16_LO: | |
6132 | case elfcpp::R_POWERPC_REL16_HI: | |
6133 | case elfcpp::R_POWERPC_REL16_HA: | |
dd93cd0a | 6134 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a | 6135 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a | 6136 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a | 6137 | case elfcpp::R_POWERPC_SECTOFF_HA: |
f9c6b907 AM |
6138 | case elfcpp::R_PPC64_SECTOFF_DS: |
6139 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
6140 | case elfcpp::R_POWERPC_TPREL16: | |
6141 | case elfcpp::R_POWERPC_TPREL16_LO: | |
6142 | case elfcpp::R_POWERPC_TPREL16_HI: | |
dd93cd0a | 6143 | case elfcpp::R_POWERPC_TPREL16_HA: |
f9c6b907 AM |
6144 | case elfcpp::R_PPC64_TPREL16_DS: |
6145 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
6146 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
6147 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 6148 | case elfcpp::R_PPC64_TPREL16_HIGHER: |
dd93cd0a | 6149 | case elfcpp::R_PPC64_TPREL16_HIGHERA: |
dd93cd0a | 6150 | case elfcpp::R_PPC64_TPREL16_HIGHEST: |
dd93cd0a | 6151 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
6152 | case elfcpp::R_POWERPC_DTPREL16: |
6153 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
6154 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
6155 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
dd93cd0a AM |
6156 | case elfcpp::R_PPC64_DTPREL16_DS: |
6157 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
6158 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
6159 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
6160 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
6161 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
6162 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
6163 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
dd93cd0a AM |
6164 | case elfcpp::R_PPC64_TLSGD: |
6165 | case elfcpp::R_PPC64_TLSLD: | |
45965137 | 6166 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
cf43a2fe AM |
6167 | break; |
6168 | ||
42cacb20 DE |
6169 | case elfcpp::R_POWERPC_GOT16: |
6170 | case elfcpp::R_POWERPC_GOT16_LO: | |
6171 | case elfcpp::R_POWERPC_GOT16_HI: | |
6172 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
6173 | case elfcpp::R_PPC64_GOT16_DS: |
6174 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 6175 | { |
c9269dff AM |
6176 | // The symbol requires a GOT entry. |
6177 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
6178 | |
6179 | got = target->got_section(symtab, layout); | |
2e702c99 | 6180 | if (gsym->final_value_is_known()) |
2e702c99 | 6181 | { |
b01a4b04 AM |
6182 | if (is_ifunc |
6183 | && (size == 32 || target->abiversion() >= 2)) | |
e5d5f5ed AM |
6184 | got->add_global_plt(gsym, GOT_TYPE_STANDARD); |
6185 | else | |
6186 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
6187 | } | |
6188 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) | |
6189 | { | |
6190 | // If we are generating a shared object or a pie, this | |
6191 | // symbol's GOT entry will be set by a dynamic relocation. | |
6192 | unsigned int off = got->add_constant(0); | |
6193 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
6194 | ||
b3ccdeb5 AM |
6195 | Reloc_section* rela_dyn |
6196 | = target->rela_dyn_section(symtab, layout, is_ifunc); | |
6197 | ||
e5d5f5ed | 6198 | if (gsym->can_use_relative_reloc(false) |
9055360d AM |
6199 | && !((size == 32 |
6200 | || target->abiversion() >= 2) | |
e5d5f5ed AM |
6201 | && gsym->visibility() == elfcpp::STV_PROTECTED |
6202 | && parameters->options().shared())) | |
2e702c99 | 6203 | { |
b3ccdeb5 AM |
6204 | unsigned int dynrel = (is_ifunc ? elfcpp::R_POWERPC_IRELATIVE |
6205 | : elfcpp::R_POWERPC_RELATIVE); | |
e5d5f5ed AM |
6206 | rela_dyn->add_global_relative(gsym, dynrel, got, off, 0, false); |
6207 | } | |
6208 | else | |
6209 | { | |
6210 | unsigned int dynrel = elfcpp::R_POWERPC_GLOB_DAT; | |
6211 | rela_dyn->add_global(gsym, dynrel, got, off, 0); | |
42cacb20 | 6212 | } |
2e702c99 | 6213 | } |
42cacb20 DE |
6214 | } |
6215 | break; | |
6216 | ||
cf43a2fe AM |
6217 | case elfcpp::R_PPC64_TOC16: |
6218 | case elfcpp::R_PPC64_TOC16_LO: | |
6219 | case elfcpp::R_PPC64_TOC16_HI: | |
6220 | case elfcpp::R_PPC64_TOC16_HA: | |
6221 | case elfcpp::R_PPC64_TOC16_DS: | |
6222 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
6223 | // We need a GOT section. |
6224 | target->got_section(symtab, layout); | |
6225 | break; | |
6226 | ||
dd93cd0a AM |
6227 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
6228 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
6229 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
6230 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
6231 | { | |
6232 | const bool final = gsym->final_value_is_known(); | |
6233 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
6234 | if (tls_type == tls::TLSOPT_NONE) | |
6235 | { | |
6236 | Output_data_got_powerpc<size, big_endian>* got | |
6237 | = target->got_section(symtab, layout); | |
b3ccdeb5 AM |
6238 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); |
6239 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, rela_dyn, | |
dd93cd0a AM |
6240 | elfcpp::R_POWERPC_DTPMOD, |
6241 | elfcpp::R_POWERPC_DTPREL); | |
6242 | } | |
6243 | else if (tls_type == tls::TLSOPT_TO_IE) | |
6244 | { | |
acc276d8 AM |
6245 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6246 | { | |
6247 | Output_data_got_powerpc<size, big_endian>* got | |
6248 | = target->got_section(symtab, layout); | |
6249 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6250 | if (gsym->is_undefined() | |
6251 | || gsym->is_from_dynobj()) | |
6252 | { | |
6253 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6254 | elfcpp::R_POWERPC_TPREL); | |
6255 | } | |
6256 | else | |
6257 | { | |
6258 | unsigned int off = got->add_constant(0); | |
6259 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6260 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6261 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6262 | got, off, 0); | |
6263 | } | |
6264 | } | |
dd93cd0a AM |
6265 | } |
6266 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6267 | { | |
6268 | // no GOT relocs needed for Local Exec. | |
6269 | } | |
6270 | else | |
6271 | gold_unreachable(); | |
6272 | } | |
42cacb20 DE |
6273 | break; |
6274 | ||
dd93cd0a AM |
6275 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
6276 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
6277 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
6278 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
6279 | { | |
6280 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
6281 | if (tls_type == tls::TLSOPT_NONE) | |
6282 | target->tlsld_got_offset(symtab, layout, object); | |
6283 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6284 | { | |
6285 | // no GOT relocs needed for Local Exec. | |
7404fe1b AM |
6286 | if (parameters->options().emit_relocs()) |
6287 | { | |
6288 | Output_section* os = layout->tls_segment()->first_section(); | |
6289 | gold_assert(os != NULL); | |
6290 | os->set_needs_symtab_index(); | |
6291 | } | |
dd93cd0a AM |
6292 | } |
6293 | else | |
6294 | gold_unreachable(); | |
6295 | } | |
6296 | break; | |
6297 | ||
6298 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6299 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
6300 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
6301 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
6302 | { | |
6303 | Output_data_got_powerpc<size, big_endian>* got | |
6304 | = target->got_section(symtab, layout); | |
bd73a62d AM |
6305 | if (!gsym->final_value_is_known() |
6306 | && (gsym->is_from_dynobj() | |
6307 | || gsym->is_undefined() | |
6308 | || gsym->is_preemptible())) | |
6309 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
6310 | target->rela_dyn_section(layout), | |
6311 | elfcpp::R_POWERPC_DTPREL); | |
6312 | else | |
6313 | got->add_global_tls(gsym, GOT_TYPE_DTPREL); | |
dd93cd0a AM |
6314 | } |
6315 | break; | |
6316 | ||
6317 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6318 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
6319 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
6320 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
6321 | { | |
6322 | const bool final = gsym->final_value_is_known(); | |
6323 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
6324 | if (tls_type == tls::TLSOPT_NONE) | |
6325 | { | |
acc276d8 AM |
6326 | if (!gsym->has_got_offset(GOT_TYPE_TPREL)) |
6327 | { | |
6328 | Output_data_got_powerpc<size, big_endian>* got | |
6329 | = target->got_section(symtab, layout); | |
6330 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
6331 | if (gsym->is_undefined() | |
6332 | || gsym->is_from_dynobj()) | |
6333 | { | |
6334 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, rela_dyn, | |
6335 | elfcpp::R_POWERPC_TPREL); | |
6336 | } | |
6337 | else | |
6338 | { | |
6339 | unsigned int off = got->add_constant(0); | |
6340 | gsym->set_got_offset(GOT_TYPE_TPREL, off); | |
6341 | unsigned int dynrel = elfcpp::R_POWERPC_TPREL; | |
6342 | rela_dyn->add_symbolless_global_addend(gsym, dynrel, | |
6343 | got, off, 0); | |
6344 | } | |
6345 | } | |
dd93cd0a AM |
6346 | } |
6347 | else if (tls_type == tls::TLSOPT_TO_LE) | |
6348 | { | |
6349 | // no GOT relocs needed for Local Exec. | |
6350 | } | |
6351 | else | |
6352 | gold_unreachable(); | |
6353 | } | |
42cacb20 DE |
6354 | break; |
6355 | ||
6356 | default: | |
6357 | unsupported_reloc_global(object, r_type, gsym); | |
6358 | break; | |
6359 | } | |
d8f5a274 AM |
6360 | |
6361 | switch (r_type) | |
6362 | { | |
6363 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
6364 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
6365 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
6366 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
6367 | case elfcpp::R_POWERPC_GOT16: | |
6368 | case elfcpp::R_PPC64_GOT16_DS: | |
6369 | case elfcpp::R_PPC64_TOC16: | |
6370 | case elfcpp::R_PPC64_TOC16_DS: | |
6371 | ppc_object->set_has_small_toc_reloc(); | |
6372 | default: | |
6373 | break; | |
6374 | } | |
42cacb20 DE |
6375 | } |
6376 | ||
6d03d481 ST |
6377 | // Process relocations for gc. |
6378 | ||
6379 | template<int size, bool big_endian> | |
6380 | void | |
6381 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
6382 | Symbol_table* symtab, |
6383 | Layout* layout, | |
6384 | Sized_relobj_file<size, big_endian>* object, | |
6385 | unsigned int data_shndx, | |
6386 | unsigned int, | |
6387 | const unsigned char* prelocs, | |
6388 | size_t reloc_count, | |
6389 | Output_section* output_section, | |
6390 | bool needs_special_offset_handling, | |
6391 | size_t local_symbol_count, | |
6392 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
6393 | { |
6394 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 6395 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
e81fea4d AM |
6396 | Powerpc_relobj<size, big_endian>* ppc_object |
6397 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
6398 | if (size == 64) | |
6399 | ppc_object->set_opd_valid(); | |
6400 | if (size == 64 && data_shndx == ppc_object->opd_shndx()) | |
6401 | { | |
6402 | typename Powerpc_relobj<size, big_endian>::Access_from::iterator p; | |
6403 | for (p = ppc_object->access_from_map()->begin(); | |
6404 | p != ppc_object->access_from_map()->end(); | |
6405 | ++p) | |
6406 | { | |
6407 | Address dst_off = p->first; | |
6408 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
6409 | typename Powerpc_relobj<size, big_endian>::Section_refs::iterator s; | |
6410 | for (s = p->second.begin(); s != p->second.end(); ++s) | |
6411 | { | |
efc6fa12 | 6412 | Relobj* src_obj = s->first; |
e81fea4d AM |
6413 | unsigned int src_indx = s->second; |
6414 | symtab->gc()->add_reference(src_obj, src_indx, | |
6415 | ppc_object, dst_indx); | |
6416 | } | |
6417 | p->second.clear(); | |
6418 | } | |
6419 | ppc_object->access_from_map()->clear(); | |
c6de8ed4 | 6420 | ppc_object->process_gc_mark(symtab); |
e81fea4d AM |
6421 | // Don't look at .opd relocs as .opd will reference everything. |
6422 | return; | |
6423 | } | |
6d03d481 | 6424 | |
41cbeecc | 6425 | gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan, |
3ff2ccb0 | 6426 | typename Target_powerpc::Relocatable_size_for_reloc>( |
6d03d481 ST |
6427 | symtab, |
6428 | layout, | |
6429 | this, | |
6430 | object, | |
6431 | data_shndx, | |
6432 | prelocs, | |
6433 | reloc_count, | |
6434 | output_section, | |
6435 | needs_special_offset_handling, | |
6436 | local_symbol_count, | |
6437 | plocal_symbols); | |
6438 | } | |
6439 | ||
e81fea4d AM |
6440 | // Handle target specific gc actions when adding a gc reference from |
6441 | // SRC_OBJ, SRC_SHNDX to a location specified by DST_OBJ, DST_SHNDX | |
6442 | // and DST_OFF. For powerpc64, this adds a referenc to the code | |
6443 | // section of a function descriptor. | |
6444 | ||
6445 | template<int size, bool big_endian> | |
6446 | void | |
6447 | Target_powerpc<size, big_endian>::do_gc_add_reference( | |
6448 | Symbol_table* symtab, | |
efc6fa12 | 6449 | Relobj* src_obj, |
e81fea4d | 6450 | unsigned int src_shndx, |
efc6fa12 | 6451 | Relobj* dst_obj, |
e81fea4d AM |
6452 | unsigned int dst_shndx, |
6453 | Address dst_off) const | |
6454 | { | |
6c77229c AM |
6455 | if (size != 64 || dst_obj->is_dynamic()) |
6456 | return; | |
6457 | ||
e81fea4d AM |
6458 | Powerpc_relobj<size, big_endian>* ppc_object |
6459 | = static_cast<Powerpc_relobj<size, big_endian>*>(dst_obj); | |
a2d7bf59 | 6460 | if (dst_shndx != 0 && dst_shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6461 | { |
6462 | if (ppc_object->opd_valid()) | |
6463 | { | |
6464 | dst_shndx = ppc_object->get_opd_ent(dst_off); | |
6465 | symtab->gc()->add_reference(src_obj, src_shndx, dst_obj, dst_shndx); | |
6466 | } | |
6467 | else | |
6468 | { | |
6469 | // If we haven't run scan_opd_relocs, we must delay | |
6470 | // processing this function descriptor reference. | |
6471 | ppc_object->add_reference(src_obj, src_shndx, dst_off); | |
6472 | } | |
6473 | } | |
6474 | } | |
6475 | ||
6476 | // Add any special sections for this symbol to the gc work list. | |
6477 | // For powerpc64, this adds the code section of a function | |
6478 | // descriptor. | |
6479 | ||
6480 | template<int size, bool big_endian> | |
6481 | void | |
6482 | Target_powerpc<size, big_endian>::do_gc_mark_symbol( | |
6483 | Symbol_table* symtab, | |
6484 | Symbol* sym) const | |
6485 | { | |
6486 | if (size == 64) | |
6487 | { | |
6488 | Powerpc_relobj<size, big_endian>* ppc_object | |
6489 | = static_cast<Powerpc_relobj<size, big_endian>*>(sym->object()); | |
6490 | bool is_ordinary; | |
6491 | unsigned int shndx = sym->shndx(&is_ordinary); | |
a2d7bf59 | 6492 | if (is_ordinary && shndx != 0 && shndx == ppc_object->opd_shndx()) |
e81fea4d AM |
6493 | { |
6494 | Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); | |
6495 | Address dst_off = gsym->value(); | |
c6de8ed4 AM |
6496 | if (ppc_object->opd_valid()) |
6497 | { | |
6498 | unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); | |
4277535c RÁE |
6499 | symtab->gc()->worklist().push_back(Section_id(ppc_object, |
6500 | dst_indx)); | |
c6de8ed4 AM |
6501 | } |
6502 | else | |
6503 | ppc_object->add_gc_mark(dst_off); | |
e81fea4d AM |
6504 | } |
6505 | } | |
6506 | } | |
6507 | ||
dc3714f3 AM |
6508 | // For a symbol location in .opd, set LOC to the location of the |
6509 | // function entry. | |
6510 | ||
6511 | template<int size, bool big_endian> | |
6512 | void | |
6513 | Target_powerpc<size, big_endian>::do_function_location( | |
6514 | Symbol_location* loc) const | |
6515 | { | |
a2d7bf59 | 6516 | if (size == 64 && loc->shndx != 0) |
dc3714f3 AM |
6517 | { |
6518 | if (loc->object->is_dynamic()) | |
6519 | { | |
6520 | Powerpc_dynobj<size, big_endian>* ppc_object | |
6521 | = static_cast<Powerpc_dynobj<size, big_endian>*>(loc->object); | |
6522 | if (loc->shndx == ppc_object->opd_shndx()) | |
6523 | { | |
6524 | Address dest_off; | |
6525 | Address off = loc->offset - ppc_object->opd_address(); | |
6526 | loc->shndx = ppc_object->get_opd_ent(off, &dest_off); | |
6527 | loc->offset = dest_off; | |
6528 | } | |
6529 | } | |
6530 | else | |
6531 | { | |
6532 | const Powerpc_relobj<size, big_endian>* ppc_object | |
6533 | = static_cast<const Powerpc_relobj<size, big_endian>*>(loc->object); | |
6534 | if (loc->shndx == ppc_object->opd_shndx()) | |
6535 | { | |
6536 | Address dest_off; | |
6537 | loc->shndx = ppc_object->get_opd_ent(loc->offset, &dest_off); | |
6538 | loc->offset = dest_off; | |
6539 | } | |
6540 | } | |
6541 | } | |
6542 | } | |
6543 | ||
bbec1a5d AM |
6544 | // FNOFFSET in section SHNDX in OBJECT is the start of a function |
6545 | // compiled with -fsplit-stack. The function calls non-split-stack | |
6546 | // code. Change the function to ensure it has enough stack space to | |
6547 | // call some random function. | |
6548 | ||
6549 | template<int size, bool big_endian> | |
6550 | void | |
6551 | Target_powerpc<size, big_endian>::do_calls_non_split( | |
6552 | Relobj* object, | |
6553 | unsigned int shndx, | |
6554 | section_offset_type fnoffset, | |
6555 | section_size_type fnsize, | |
6556 | unsigned char* view, | |
6557 | section_size_type view_size, | |
6558 | std::string* from, | |
6559 | std::string* to) const | |
6560 | { | |
6561 | // 32-bit not supported. | |
6562 | if (size == 32) | |
6563 | { | |
6564 | // warn | |
6565 | Target::do_calls_non_split(object, shndx, fnoffset, fnsize, | |
6566 | view, view_size, from, to); | |
6567 | return; | |
6568 | } | |
6569 | ||
6570 | // The function always starts with | |
6571 | // ld %r0,-0x7000-64(%r13) # tcbhead_t.__private_ss | |
6572 | // addis %r12,%r1,-allocate@ha | |
6573 | // addi %r12,%r12,-allocate@l | |
6574 | // cmpld %r12,%r0 | |
6575 | // but note that the addis or addi may be replaced with a nop | |
6576 | ||
6577 | unsigned char *entry = view + fnoffset; | |
6578 | uint32_t insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6579 | ||
6580 | if ((insn & 0xffff0000) == addis_2_12) | |
6581 | { | |
6582 | /* Skip ELFv2 global entry code. */ | |
6583 | entry += 8; | |
6584 | insn = elfcpp::Swap<32, big_endian>::readval(entry); | |
6585 | } | |
6586 | ||
6587 | unsigned char *pinsn = entry; | |
6588 | bool ok = false; | |
6589 | const uint32_t ld_private_ss = 0xe80d8fc0; | |
6590 | if (insn == ld_private_ss) | |
6591 | { | |
6592 | int32_t allocate = 0; | |
6593 | while (1) | |
6594 | { | |
6595 | pinsn += 4; | |
6596 | insn = elfcpp::Swap<32, big_endian>::readval(pinsn); | |
6597 | if ((insn & 0xffff0000) == addis_12_1) | |
6598 | allocate += (insn & 0xffff) << 16; | |
6599 | else if ((insn & 0xffff0000) == addi_12_1 | |
6600 | || (insn & 0xffff0000) == addi_12_12) | |
6601 | allocate += ((insn & 0xffff) ^ 0x8000) - 0x8000; | |
6602 | else if (insn != nop) | |
6603 | break; | |
6604 | } | |
6605 | if (insn == cmpld_7_12_0 && pinsn == entry + 12) | |
6606 | { | |
6607 | int extra = parameters->options().split_stack_adjust_size(); | |
6608 | allocate -= extra; | |
6609 | if (allocate >= 0 || extra < 0) | |
6610 | { | |
6611 | object->error(_("split-stack stack size overflow at " | |
6612 | "section %u offset %0zx"), | |
6613 | shndx, static_cast<size_t>(fnoffset)); | |
6614 | return; | |
6615 | } | |
6616 | pinsn = entry + 4; | |
6617 | insn = addis_12_1 | (((allocate + 0x8000) >> 16) & 0xffff); | |
6618 | if (insn != addis_12_1) | |
6619 | { | |
6620 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6621 | pinsn += 4; | |
6622 | insn = addi_12_12 | (allocate & 0xffff); | |
6623 | if (insn != addi_12_12) | |
6624 | { | |
6625 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6626 | pinsn += 4; | |
6627 | } | |
6628 | } | |
6629 | else | |
6630 | { | |
6631 | insn = addi_12_1 | (allocate & 0xffff); | |
6632 | elfcpp::Swap<32, big_endian>::writeval(pinsn, insn); | |
6633 | pinsn += 4; | |
6634 | } | |
6635 | if (pinsn != entry + 12) | |
6636 | elfcpp::Swap<32, big_endian>::writeval(pinsn, nop); | |
6637 | ||
6638 | ok = true; | |
6639 | } | |
6640 | } | |
6641 | ||
6642 | if (!ok) | |
6643 | { | |
6644 | if (!object->has_no_split_stack()) | |
6645 | object->error(_("failed to match split-stack sequence at " | |
6646 | "section %u offset %0zx"), | |
6647 | shndx, static_cast<size_t>(fnoffset)); | |
6648 | } | |
6649 | } | |
6650 | ||
42cacb20 DE |
6651 | // Scan relocations for a section. |
6652 | ||
6653 | template<int size, bool big_endian> | |
6654 | void | |
6655 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
6656 | Symbol_table* symtab, |
6657 | Layout* layout, | |
6658 | Sized_relobj_file<size, big_endian>* object, | |
6659 | unsigned int data_shndx, | |
6660 | unsigned int sh_type, | |
6661 | const unsigned char* prelocs, | |
6662 | size_t reloc_count, | |
6663 | Output_section* output_section, | |
6664 | bool needs_special_offset_handling, | |
6665 | size_t local_symbol_count, | |
6666 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
6667 | { |
6668 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 6669 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
42cacb20 DE |
6670 | |
6671 | if (sh_type == elfcpp::SHT_REL) | |
6672 | { | |
6673 | gold_error(_("%s: unsupported REL reloc section"), | |
6674 | object->name().c_str()); | |
6675 | return; | |
6676 | } | |
6677 | ||
2ea97941 | 6678 | gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>( |
42cacb20 DE |
6679 | symtab, |
6680 | layout, | |
6681 | this, | |
6682 | object, | |
6683 | data_shndx, | |
6684 | prelocs, | |
6685 | reloc_count, | |
6686 | output_section, | |
6687 | needs_special_offset_handling, | |
6688 | local_symbol_count, | |
6689 | plocal_symbols); | |
6690 | } | |
6691 | ||
ec4dbad3 AM |
6692 | // Functor class for processing the global symbol table. |
6693 | // Removes symbols defined on discarded opd entries. | |
6694 | ||
6695 | template<bool big_endian> | |
6696 | class Global_symbol_visitor_opd | |
6697 | { | |
6698 | public: | |
6699 | Global_symbol_visitor_opd() | |
6700 | { } | |
6701 | ||
6702 | void | |
6703 | operator()(Sized_symbol<64>* sym) | |
6704 | { | |
6705 | if (sym->has_symtab_index() | |
6706 | || sym->source() != Symbol::FROM_OBJECT | |
6707 | || !sym->in_real_elf()) | |
6708 | return; | |
6709 | ||
6c77229c AM |
6710 | if (sym->object()->is_dynamic()) |
6711 | return; | |
6712 | ||
ec4dbad3 AM |
6713 | Powerpc_relobj<64, big_endian>* symobj |
6714 | = static_cast<Powerpc_relobj<64, big_endian>*>(sym->object()); | |
6c77229c | 6715 | if (symobj->opd_shndx() == 0) |
ec4dbad3 AM |
6716 | return; |
6717 | ||
6718 | bool is_ordinary; | |
6719 | unsigned int shndx = sym->shndx(&is_ordinary); | |
6720 | if (shndx == symobj->opd_shndx() | |
6721 | && symobj->get_opd_discard(sym->value())) | |
1611bc4a AM |
6722 | { |
6723 | sym->set_undefined(); | |
e3ee8ed4 | 6724 | sym->set_visibility(elfcpp::STV_DEFAULT); |
1611bc4a AM |
6725 | sym->set_is_defined_in_discarded_section(); |
6726 | sym->set_symtab_index(-1U); | |
6727 | } | |
ec4dbad3 AM |
6728 | } |
6729 | }; | |
6730 | ||
f3a0ed29 AM |
6731 | template<int size, bool big_endian> |
6732 | void | |
6733 | Target_powerpc<size, big_endian>::define_save_restore_funcs( | |
6734 | Layout* layout, | |
6735 | Symbol_table* symtab) | |
6736 | { | |
6737 | if (size == 64) | |
6738 | { | |
d49044c7 AM |
6739 | Output_data_save_res<size, big_endian>* savres |
6740 | = new Output_data_save_res<size, big_endian>(symtab); | |
6741 | this->savres_section_ = savres; | |
f3a0ed29 AM |
6742 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, |
6743 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
6744 | savres, ORDER_TEXT, false); | |
6745 | } | |
6746 | } | |
6747 | ||
d8f5a274 AM |
6748 | // Sort linker created .got section first (for the header), then input |
6749 | // sections belonging to files using small model code. | |
6750 | ||
6751 | template<bool big_endian> | |
6752 | class Sort_toc_sections | |
6753 | { | |
6754 | public: | |
6755 | bool | |
6756 | operator()(const Output_section::Input_section& is1, | |
6757 | const Output_section::Input_section& is2) const | |
6758 | { | |
6759 | if (!is1.is_input_section() && is2.is_input_section()) | |
6760 | return true; | |
6761 | bool small1 | |
6762 | = (is1.is_input_section() | |
6763 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is1.relobj()) | |
6764 | ->has_small_toc_reloc())); | |
6765 | bool small2 | |
6766 | = (is2.is_input_section() | |
6767 | && (static_cast<const Powerpc_relobj<64, big_endian>*>(is2.relobj()) | |
6768 | ->has_small_toc_reloc())); | |
6769 | return small1 && !small2; | |
6770 | } | |
6771 | }; | |
6772 | ||
42cacb20 DE |
6773 | // Finalize the sections. |
6774 | ||
6775 | template<int size, bool big_endian> | |
6776 | void | |
d5b40221 DK |
6777 | Target_powerpc<size, big_endian>::do_finalize_sections( |
6778 | Layout* layout, | |
f59f41f3 | 6779 | const Input_objects*, |
ec4dbad3 | 6780 | Symbol_table* symtab) |
42cacb20 | 6781 | { |
c9824451 AM |
6782 | if (parameters->doing_static_link()) |
6783 | { | |
6784 | // At least some versions of glibc elf-init.o have a strong | |
6785 | // reference to __rela_iplt marker syms. A weak ref would be | |
6786 | // better.. | |
6787 | if (this->iplt_ != NULL) | |
6788 | { | |
6789 | Reloc_section* rel = this->iplt_->rel_plt(); | |
6790 | symtab->define_in_output_data("__rela_iplt_start", NULL, | |
6791 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6792 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6793 | elfcpp::STV_HIDDEN, 0, false, true); | |
6794 | symtab->define_in_output_data("__rela_iplt_end", NULL, | |
6795 | Symbol_table::PREDEFINED, rel, 0, 0, | |
6796 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6797 | elfcpp::STV_HIDDEN, 0, true, true); | |
6798 | } | |
6799 | else | |
6800 | { | |
6801 | symtab->define_as_constant("__rela_iplt_start", NULL, | |
6802 | Symbol_table::PREDEFINED, 0, 0, | |
6803 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6804 | elfcpp::STV_HIDDEN, 0, true, false); | |
6805 | symtab->define_as_constant("__rela_iplt_end", NULL, | |
6806 | Symbol_table::PREDEFINED, 0, 0, | |
6807 | elfcpp::STT_NOTYPE, elfcpp::STB_GLOBAL, | |
6808 | elfcpp::STV_HIDDEN, 0, true, false); | |
6809 | } | |
6810 | } | |
6811 | ||
ec4dbad3 AM |
6812 | if (size == 64) |
6813 | { | |
6814 | typedef Global_symbol_visitor_opd<big_endian> Symbol_visitor; | |
6815 | symtab->for_all_symbols<64, Symbol_visitor>(Symbol_visitor()); | |
ec661b9d AM |
6816 | |
6817 | if (!parameters->options().relocatable()) | |
6818 | { | |
6819 | this->define_save_restore_funcs(layout, symtab); | |
6820 | ||
6821 | // Annoyingly, we need to make these sections now whether or | |
6822 | // not we need them. If we delay until do_relax then we | |
6823 | // need to mess with the relaxation machinery checkpointing. | |
6824 | this->got_section(symtab, layout); | |
6825 | this->make_brlt_section(layout); | |
d8f5a274 AM |
6826 | |
6827 | if (parameters->options().toc_sort()) | |
6828 | { | |
6829 | Output_section* os = this->got_->output_section(); | |
6830 | if (os != NULL && os->input_sections().size() > 1) | |
6831 | std::stable_sort(os->input_sections().begin(), | |
6832 | os->input_sections().end(), | |
6833 | Sort_toc_sections<big_endian>()); | |
6834 | } | |
ec661b9d | 6835 | } |
ec4dbad3 AM |
6836 | } |
6837 | ||
42cacb20 | 6838 | // Fill in some more dynamic tags. |
c9269dff | 6839 | Output_data_dynamic* odyn = layout->dynamic_data(); |
c9824451 | 6840 | if (odyn != NULL) |
cf43a2fe | 6841 | { |
c9824451 AM |
6842 | const Reloc_section* rel_plt = (this->plt_ == NULL |
6843 | ? NULL | |
6844 | : this->plt_->rel_plt()); | |
6845 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
6846 | this->rela_dyn_, true, size == 32); | |
6847 | ||
6848 | if (size == 32) | |
dd93cd0a | 6849 | { |
c9824451 AM |
6850 | if (this->got_ != NULL) |
6851 | { | |
6852 | this->got_->finalize_data_size(); | |
6853 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
6854 | this->got_, this->got_->g_o_t()); | |
6855 | } | |
dd93cd0a | 6856 | } |
c9824451 | 6857 | else |
dd93cd0a | 6858 | { |
c9824451 AM |
6859 | if (this->glink_ != NULL) |
6860 | { | |
6861 | this->glink_->finalize_data_size(); | |
6862 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
6863 | this->glink_, | |
ec661b9d | 6864 | (this->glink_->pltresolve_size |
c9824451 AM |
6865 | - 32)); |
6866 | } | |
dd93cd0a | 6867 | } |
c9269dff | 6868 | } |
cf43a2fe | 6869 | |
42cacb20 DE |
6870 | // Emit any relocs we saved in an attempt to avoid generating COPY |
6871 | // relocs. | |
6872 | if (this->copy_relocs_.any_saved_relocs()) | |
6873 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
6874 | } | |
6875 | ||
aba6bc71 AM |
6876 | // Return TRUE iff INSN is one we expect on a _LO variety toc/got |
6877 | // reloc. | |
6878 | ||
6879 | static bool | |
6880 | ok_lo_toc_insn(uint32_t insn) | |
6881 | { | |
6882 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
6883 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
6884 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
6885 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
6886 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
6887 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
6888 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
6889 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
6890 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
6891 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
6892 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
6893 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
6894 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
6895 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
6896 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
6897 | && (insn & 3) != 1) | |
6898 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
6899 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
6900 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
6901 | } | |
6902 | ||
3ea0a085 AM |
6903 | // Return the value to use for a branch relocation. |
6904 | ||
6905 | template<int size, bool big_endian> | |
1611bc4a | 6906 | bool |
3ea0a085 | 6907 | Target_powerpc<size, big_endian>::symval_for_branch( |
6c77229c | 6908 | const Symbol_table* symtab, |
3ea0a085 AM |
6909 | const Sized_symbol<size>* gsym, |
6910 | Powerpc_relobj<size, big_endian>* object, | |
1611bc4a | 6911 | Address *value, |
3ea0a085 AM |
6912 | unsigned int *dest_shndx) |
6913 | { | |
9055360d AM |
6914 | if (size == 32 || this->abiversion() >= 2) |
6915 | gold_unreachable(); | |
3ea0a085 | 6916 | *dest_shndx = 0; |
3ea0a085 AM |
6917 | |
6918 | // If the symbol is defined in an opd section, ie. is a function | |
6919 | // descriptor, use the function descriptor code entry address | |
6920 | Powerpc_relobj<size, big_endian>* symobj = object; | |
f3a0ed29 AM |
6921 | if (gsym != NULL |
6922 | && gsym->source() != Symbol::FROM_OBJECT) | |
1611bc4a | 6923 | return true; |
3ea0a085 AM |
6924 | if (gsym != NULL) |
6925 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
6926 | unsigned int shndx = symobj->opd_shndx(); | |
6927 | if (shndx == 0) | |
1611bc4a | 6928 | return true; |
3ea0a085 | 6929 | Address opd_addr = symobj->get_output_section_offset(shndx); |
a2d7bf59 | 6930 | if (opd_addr == invalid_address) |
1611bc4a | 6931 | return true; |
c6905c28 | 6932 | opd_addr += symobj->output_section_address(shndx); |
1611bc4a | 6933 | if (*value >= opd_addr && *value < opd_addr + symobj->section_size(shndx)) |
3ea0a085 AM |
6934 | { |
6935 | Address sec_off; | |
1611bc4a | 6936 | *dest_shndx = symobj->get_opd_ent(*value - opd_addr, &sec_off); |
6c77229c AM |
6937 | if (symtab->is_section_folded(symobj, *dest_shndx)) |
6938 | { | |
6939 | Section_id folded | |
6940 | = symtab->icf()->get_folded_section(symobj, *dest_shndx); | |
6941 | symobj = static_cast<Powerpc_relobj<size, big_endian>*>(folded.first); | |
6942 | *dest_shndx = folded.second; | |
6943 | } | |
3ea0a085 | 6944 | Address sec_addr = symobj->get_output_section_offset(*dest_shndx); |
1611bc4a AM |
6945 | if (sec_addr == invalid_address) |
6946 | return false; | |
6947 | ||
3ea0a085 | 6948 | sec_addr += symobj->output_section(*dest_shndx)->address(); |
1611bc4a | 6949 | *value = sec_addr + sec_off; |
3ea0a085 | 6950 | } |
1611bc4a | 6951 | return true; |
3ea0a085 AM |
6952 | } |
6953 | ||
42cacb20 DE |
6954 | // Perform a relocation. |
6955 | ||
6956 | template<int size, bool big_endian> | |
6957 | inline bool | |
6958 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 AM |
6959 | const Relocate_info<size, big_endian>* relinfo, |
6960 | Target_powerpc* target, | |
6961 | Output_section* os, | |
6962 | size_t relnum, | |
6963 | const elfcpp::Rela<size, big_endian>& rela, | |
6964 | unsigned int r_type, | |
6965 | const Sized_symbol<size>* gsym, | |
6966 | const Symbol_value<size>* psymval, | |
6967 | unsigned char* view, | |
c9269dff AM |
6968 | Address address, |
6969 | section_size_type view_size) | |
42cacb20 | 6970 | { |
0e804863 ILT |
6971 | if (view == NULL) |
6972 | return true; | |
6973 | ||
e3deeb9c | 6974 | switch (this->maybe_skip_tls_get_addr_call(r_type, gsym)) |
dd93cd0a | 6975 | { |
e3deeb9c AM |
6976 | case Track_tls::NOT_EXPECTED: |
6977 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
6978 | _("__tls_get_addr call lacks marker reloc")); | |
6979 | break; | |
6980 | case Track_tls::EXPECTED: | |
6981 | // We have already complained. | |
6982 | break; | |
6983 | case Track_tls::SKIP: | |
6984 | return true; | |
6985 | case Track_tls::NORMAL: | |
6986 | break; | |
dd93cd0a | 6987 | } |
dd93cd0a | 6988 | |
42cacb20 | 6989 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 6990 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
3ea0a085 AM |
6991 | Powerpc_relobj<size, big_endian>* const object |
6992 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a | 6993 | Address value = 0; |
0cfb0717 | 6994 | bool has_stub_value = false; |
e5d5f5ed | 6995 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); |
b3ccdeb5 | 6996 | if ((gsym != NULL |
88b8e639 | 6997 | ? gsym->use_plt_offset(Scan::get_reference_flags(r_type, target)) |
b3ccdeb5 AM |
6998 | : object->local_has_plt_offset(r_sym)) |
6999 | && (!psymval->is_ifunc_symbol() | |
9055360d | 7000 | || Scan::reloc_needs_plt_for_ifunc(target, object, r_type, false))) |
dd93cd0a | 7001 | { |
9055360d AM |
7002 | if (size == 64 |
7003 | && gsym != NULL | |
7004 | && target->abiversion() >= 2 | |
7005 | && !parameters->options().output_is_position_independent() | |
7006 | && !is_branch_reloc(r_type)) | |
ec661b9d | 7007 | { |
faa2211d AM |
7008 | Address off = target->glink_section()->find_global_entry(gsym); |
7009 | if (off != invalid_address) | |
6ec65f28 AM |
7010 | { |
7011 | value = target->glink_section()->global_entry_address() + off; | |
7012 | has_stub_value = true; | |
7013 | } | |
ec661b9d | 7014 | } |
c9824451 | 7015 | else |
9055360d AM |
7016 | { |
7017 | Stub_table<size, big_endian>* stub_table | |
7018 | = object->stub_table(relinfo->data_shndx); | |
7019 | if (stub_table == NULL) | |
7020 | { | |
7021 | // This is a ref from a data section to an ifunc symbol. | |
7022 | if (target->stub_tables().size() != 0) | |
7023 | stub_table = target->stub_tables()[0]; | |
7024 | } | |
faa2211d AM |
7025 | if (stub_table != NULL) |
7026 | { | |
7027 | Address off; | |
7028 | if (gsym != NULL) | |
7029 | off = stub_table->find_plt_call_entry(object, gsym, r_type, | |
7030 | rela.get_r_addend()); | |
7031 | else | |
7032 | off = stub_table->find_plt_call_entry(object, r_sym, r_type, | |
7033 | rela.get_r_addend()); | |
7034 | if (off != invalid_address) | |
7035 | { | |
7036 | value = stub_table->stub_address() + off; | |
7037 | has_stub_value = true; | |
7038 | } | |
7039 | } | |
9055360d | 7040 | } |
faa2211d AM |
7041 | // We don't care too much about bogus debug references to |
7042 | // non-local functions, but otherwise there had better be a plt | |
7043 | // call stub or global entry stub as appropriate. | |
7044 | gold_assert(has_stub_value || !(os->flags() & elfcpp::SHF_ALLOC)); | |
dd93cd0a | 7045 | } |
cf43a2fe AM |
7046 | |
7047 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
7048 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
7049 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
7050 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
7051 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
7052 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 7053 | { |
cf43a2fe AM |
7054 | if (gsym != NULL) |
7055 | { | |
7056 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
7057 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
7058 | } | |
7059 | else | |
7060 | { | |
7061 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7062 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
7063 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
7064 | } | |
dd93cd0a | 7065 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
7066 | } |
7067 | else if (r_type == elfcpp::R_PPC64_TOC) | |
7068 | { | |
c9269dff | 7069 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 7070 | + object->toc_base_offset()); |
cf43a2fe AM |
7071 | } |
7072 | else if (gsym != NULL | |
7073 | && (r_type == elfcpp::R_POWERPC_REL24 | |
7074 | || r_type == elfcpp::R_PPC_PLTREL24) | |
0cfb0717 | 7075 | && has_stub_value) |
cf43a2fe | 7076 | { |
c9269dff AM |
7077 | if (size == 64) |
7078 | { | |
7079 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
7080 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
7081 | bool can_plt_call = false; | |
7082 | if (rela.get_r_offset() + 8 <= view_size) | |
7083 | { | |
3ea0a085 | 7084 | Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); |
c9269dff | 7085 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); |
3ea0a085 AM |
7086 | if ((insn & 1) != 0 |
7087 | && (insn2 == nop | |
7088 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31)) | |
c9269dff | 7089 | { |
b4f7960d AM |
7090 | elfcpp::Swap<32, big_endian>:: |
7091 | writeval(wv + 1, ld_2_1 + target->stk_toc()); | |
c9269dff AM |
7092 | can_plt_call = true; |
7093 | } | |
7094 | } | |
7095 | if (!can_plt_call) | |
3ea0a085 AM |
7096 | { |
7097 | // If we don't have a branch and link followed by a nop, | |
7098 | // we can't go via the plt because there is no place to | |
7099 | // put a toc restoring instruction. | |
7100 | // Unless we know we won't be returning. | |
7101 | if (strcmp(gsym->name(), "__libc_start_main") == 0) | |
7102 | can_plt_call = true; | |
7103 | } | |
7104 | if (!can_plt_call) | |
7105 | { | |
ba8ca3e7 AM |
7106 | // g++ as of 20130507 emits self-calls without a |
7107 | // following nop. This is arguably wrong since we have | |
7108 | // conflicting information. On the one hand a global | |
7109 | // symbol and on the other a local call sequence, but | |
7110 | // don't error for this special case. | |
7111 | // It isn't possible to cheaply verify we have exactly | |
7112 | // such a call. Allow all calls to the same section. | |
3ea0a085 | 7113 | bool ok = false; |
c9824451 | 7114 | Address code = value; |
3ea0a085 AM |
7115 | if (gsym->source() == Symbol::FROM_OBJECT |
7116 | && gsym->object() == object) | |
7117 | { | |
9055360d AM |
7118 | unsigned int dest_shndx = 0; |
7119 | if (target->abiversion() < 2) | |
7120 | { | |
7121 | Address addend = rela.get_r_addend(); | |
1611bc4a AM |
7122 | code = psymval->value(object, addend); |
7123 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7124 | &code, &dest_shndx); | |
9055360d | 7125 | } |
3ea0a085 AM |
7126 | bool is_ordinary; |
7127 | if (dest_shndx == 0) | |
7128 | dest_shndx = gsym->shndx(&is_ordinary); | |
7129 | ok = dest_shndx == relinfo->data_shndx; | |
7130 | } | |
7131 | if (!ok) | |
c9824451 AM |
7132 | { |
7133 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7134 | _("call lacks nop, can't restore toc; " | |
7135 | "recompile with -fPIC")); | |
7136 | value = code; | |
7137 | } | |
3ea0a085 | 7138 | } |
c9269dff | 7139 | } |
cf43a2fe | 7140 | } |
dd93cd0a AM |
7141 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
7142 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
7143 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
7144 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
7145 | { | |
7146 | // First instruction of a global dynamic sequence, arg setup insn. | |
7147 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7148 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7149 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
7150 | if (tls_type == tls::TLSOPT_NONE) | |
7151 | got_type = GOT_TYPE_TLSGD; | |
7152 | else if (tls_type == tls::TLSOPT_TO_IE) | |
7153 | got_type = GOT_TYPE_TPREL; | |
7154 | if (got_type != GOT_TYPE_STANDARD) | |
7155 | { | |
7156 | if (gsym != NULL) | |
7157 | { | |
7158 | gold_assert(gsym->has_got_offset(got_type)); | |
7159 | value = gsym->got_offset(got_type); | |
7160 | } | |
7161 | else | |
7162 | { | |
7163 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7164 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
7165 | value = object->local_got_offset(r_sym, got_type); | |
7166 | } | |
7167 | value -= target->got_section()->got_base_offset(object); | |
7168 | } | |
7169 | if (tls_type == tls::TLSOPT_TO_IE) | |
7170 | { | |
7171 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7172 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7173 | { | |
7174 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7175 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7176 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
7177 | if (size == 32) | |
7178 | insn |= 32 << 26; // lwz | |
7179 | else | |
7180 | insn |= 58 << 26; // ld | |
7181 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7182 | } | |
7183 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
7184 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
7185 | } | |
7186 | else if (tls_type == tls::TLSOPT_TO_LE) | |
7187 | { | |
7188 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
7189 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
7190 | { | |
7191 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
0f81d3f0 AM |
7192 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7193 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7194 | if (size == 32) |
0f81d3f0 AM |
7195 | insn |= addis_0_2; |
7196 | else | |
7197 | insn |= addis_0_13; | |
dd93cd0a AM |
7198 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7199 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7200 | value = psymval->value(object, rela.get_r_addend()); | |
7201 | } | |
7202 | else | |
7203 | { | |
7204 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7205 | Insn insn = nop; | |
7206 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7207 | r_type = elfcpp::R_POWERPC_NONE; | |
7208 | } | |
7209 | } | |
7210 | } | |
7211 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7212 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
7213 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
7214 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
7215 | { | |
7216 | // First instruction of a local dynamic sequence, arg setup insn. | |
7217 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
7218 | if (tls_type == tls::TLSOPT_NONE) | |
7219 | { | |
7220 | value = target->tlsld_got_offset(); | |
7221 | value -= target->got_section()->got_base_offset(object); | |
7222 | } | |
7223 | else | |
7224 | { | |
7225 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7226 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
7227 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
7228 | { | |
7229 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
0f81d3f0 AM |
7230 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); |
7231 | insn &= (1 << 26) - (1 << 21); // extract rt | |
dd93cd0a | 7232 | if (size == 32) |
0f81d3f0 AM |
7233 | insn |= addis_0_2; |
7234 | else | |
7235 | insn |= addis_0_13; | |
dd93cd0a AM |
7236 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); |
7237 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7404fe1b | 7238 | value = dtp_offset; |
dd93cd0a AM |
7239 | } |
7240 | else | |
7241 | { | |
7242 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7243 | Insn insn = nop; | |
7244 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7245 | r_type = elfcpp::R_POWERPC_NONE; | |
7246 | } | |
7247 | } | |
7248 | } | |
7249 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
7250 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
7251 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
7252 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
7253 | { | |
7254 | // Accesses relative to a local dynamic sequence address, | |
7255 | // no optimisation here. | |
7256 | if (gsym != NULL) | |
7257 | { | |
7258 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
7259 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
7260 | } | |
7261 | else | |
7262 | { | |
7263 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7264 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); | |
7265 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
7266 | } | |
7267 | value -= target->got_section()->got_base_offset(object); | |
7268 | } | |
7269 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7270 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
7271 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
7272 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
7273 | { | |
7274 | // First instruction of initial exec sequence. | |
7275 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7276 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7277 | if (tls_type == tls::TLSOPT_NONE) | |
7278 | { | |
7279 | if (gsym != NULL) | |
7280 | { | |
7281 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
7282 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
7283 | } | |
7284 | else | |
7285 | { | |
7286 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
7287 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); | |
7288 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
7289 | } | |
7290 | value -= target->got_section()->got_base_offset(object); | |
7291 | } | |
7292 | else | |
7293 | { | |
7294 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
7295 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
7296 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
7297 | { | |
7298 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7299 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7300 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
7301 | if (size == 32) | |
7302 | insn |= addis_0_2; | |
7303 | else | |
7304 | insn |= addis_0_13; | |
7305 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7306 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
7307 | value = psymval->value(object, rela.get_r_addend()); | |
7308 | } | |
7309 | else | |
7310 | { | |
7311 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7312 | Insn insn = nop; | |
7313 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7314 | r_type = elfcpp::R_POWERPC_NONE; | |
7315 | } | |
7316 | } | |
7317 | } | |
7318 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
7319 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
7320 | { | |
7321 | // Second instruction of a global dynamic sequence, | |
7322 | // the __tls_get_addr call | |
e3deeb9c | 7323 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7324 | const bool final = gsym == NULL || gsym->final_value_is_known(); |
7325 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
7326 | if (tls_type != tls::TLSOPT_NONE) | |
7327 | { | |
7328 | if (tls_type == tls::TLSOPT_TO_IE) | |
7329 | { | |
7330 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7331 | Insn insn = add_3_3_13; | |
7332 | if (size == 32) | |
7333 | insn = add_3_3_2; | |
7334 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7335 | r_type = elfcpp::R_POWERPC_NONE; | |
7336 | } | |
7337 | else | |
7338 | { | |
7339 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7340 | Insn insn = addi_3_3; | |
7341 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7342 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
7343 | view += 2 * big_endian; | |
7344 | value = psymval->value(object, rela.get_r_addend()); | |
7345 | } | |
e3deeb9c | 7346 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
7347 | } |
7348 | } | |
7349 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
7350 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
7351 | { | |
7352 | // Second instruction of a local dynamic sequence, | |
7353 | // the __tls_get_addr call | |
e3deeb9c | 7354 | this->expect_tls_get_addr_call(relinfo, relnum, rela.get_r_offset()); |
dd93cd0a AM |
7355 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); |
7356 | if (tls_type == tls::TLSOPT_TO_LE) | |
7357 | { | |
7358 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7359 | Insn insn = addi_3_3; | |
7360 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
e3deeb9c | 7361 | this->skip_next_tls_get_addr_call(); |
dd93cd0a AM |
7362 | r_type = elfcpp::R_POWERPC_TPREL16_LO; |
7363 | view += 2 * big_endian; | |
7404fe1b | 7364 | value = dtp_offset; |
dd93cd0a AM |
7365 | } |
7366 | } | |
7367 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
7368 | { | |
7369 | // Second instruction of an initial exec sequence | |
7370 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
7371 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
7372 | if (tls_type == tls::TLSOPT_TO_LE) | |
7373 | { | |
7374 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7375 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7376 | unsigned int reg = size == 32 ? 2 : 13; | |
7377 | insn = at_tls_transform(insn, reg); | |
7378 | gold_assert(insn != 0); | |
7379 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7380 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
7381 | view += 2 * big_endian; | |
7382 | value = psymval->value(object, rela.get_r_addend()); | |
7383 | } | |
7384 | } | |
0cfb0717 | 7385 | else if (!has_stub_value) |
cf43a2fe | 7386 | { |
dd93cd0a | 7387 | Address addend = 0; |
cbcb23fa | 7388 | if (!(size == 32 && r_type == elfcpp::R_PPC_PLTREL24)) |
cf43a2fe | 7389 | addend = rela.get_r_addend(); |
c9824451 | 7390 | value = psymval->value(object, addend); |
dd93cd0a | 7391 | if (size == 64 && is_branch_reloc(r_type)) |
9055360d AM |
7392 | { |
7393 | if (target->abiversion() >= 2) | |
7394 | { | |
7395 | if (gsym != NULL) | |
7396 | value += object->ppc64_local_entry_offset(gsym); | |
7397 | else | |
7398 | value += object->ppc64_local_entry_offset(r_sym); | |
7399 | } | |
7400 | else | |
1611bc4a AM |
7401 | { |
7402 | unsigned int dest_shndx; | |
7403 | target->symval_for_branch(relinfo->symtab, gsym, object, | |
7404 | &value, &dest_shndx); | |
7405 | } | |
9055360d | 7406 | } |
cbcb23fa | 7407 | Address max_branch_offset = max_branch_delta(r_type); |
ec661b9d AM |
7408 | if (max_branch_offset != 0 |
7409 | && value - address + max_branch_offset >= 2 * max_branch_offset) | |
7410 | { | |
7411 | Stub_table<size, big_endian>* stub_table | |
7412 | = object->stub_table(relinfo->data_shndx); | |
0cfdc767 AM |
7413 | if (stub_table != NULL) |
7414 | { | |
7415 | Address off = stub_table->find_long_branch_entry(object, value); | |
7416 | if (off != invalid_address) | |
0cfb0717 AM |
7417 | { |
7418 | value = (stub_table->stub_address() + stub_table->plt_size() | |
7419 | + off); | |
7420 | has_stub_value = true; | |
7421 | } | |
0cfdc767 | 7422 | } |
ec661b9d | 7423 | } |
42cacb20 DE |
7424 | } |
7425 | ||
42cacb20 DE |
7426 | switch (r_type) |
7427 | { | |
dd93cd0a AM |
7428 | case elfcpp::R_PPC64_REL64: |
7429 | case elfcpp::R_POWERPC_REL32: | |
7430 | case elfcpp::R_POWERPC_REL24: | |
7431 | case elfcpp::R_PPC_PLTREL24: | |
7432 | case elfcpp::R_PPC_LOCAL24PC: | |
7433 | case elfcpp::R_POWERPC_REL16: | |
7434 | case elfcpp::R_POWERPC_REL16_LO: | |
7435 | case elfcpp::R_POWERPC_REL16_HI: | |
7436 | case elfcpp::R_POWERPC_REL16_HA: | |
7437 | case elfcpp::R_POWERPC_REL14: | |
7438 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7439 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7440 | value -= address; | |
7441 | break; | |
7442 | ||
42cacb20 DE |
7443 | case elfcpp::R_PPC64_TOC16: |
7444 | case elfcpp::R_PPC64_TOC16_LO: | |
7445 | case elfcpp::R_PPC64_TOC16_HI: | |
7446 | case elfcpp::R_PPC64_TOC16_HA: | |
7447 | case elfcpp::R_PPC64_TOC16_DS: | |
7448 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 7449 | // Subtract the TOC base address. |
c9269dff | 7450 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 7451 | + object->toc_base_offset()); |
42cacb20 DE |
7452 | break; |
7453 | ||
cf43a2fe AM |
7454 | case elfcpp::R_POWERPC_SECTOFF: |
7455 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
7456 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7457 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7458 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7459 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
7460 | if (os != NULL) | |
7461 | value -= os->address(); | |
42cacb20 DE |
7462 | break; |
7463 | ||
dd93cd0a AM |
7464 | case elfcpp::R_PPC64_TPREL16_DS: |
7465 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7466 | case elfcpp::R_PPC64_TPREL16_HIGH: |
7467 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
dd93cd0a | 7468 | if (size != 64) |
f9c6b907 | 7469 | // R_PPC_TLSGD, R_PPC_TLSLD, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HI |
dd93cd0a AM |
7470 | break; |
7471 | case elfcpp::R_POWERPC_TPREL16: | |
7472 | case elfcpp::R_POWERPC_TPREL16_LO: | |
7473 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7474 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7475 | case elfcpp::R_POWERPC_TPREL: | |
7476 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
7477 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7478 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7479 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
7480 | // tls symbol values are relative to tls_segment()->vaddr() | |
7481 | value -= tp_offset; | |
7482 | break; | |
7483 | ||
7484 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7485 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
7486 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
7487 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
7488 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
7489 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
7490 | if (size != 64) | |
7491 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
7492 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
7493 | break; | |
7494 | case elfcpp::R_POWERPC_DTPREL16: | |
7495 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7496 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7497 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7498 | case elfcpp::R_POWERPC_DTPREL: | |
f9c6b907 AM |
7499 | case elfcpp::R_PPC64_DTPREL16_HIGH: |
7500 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
dd93cd0a AM |
7501 | // tls symbol values are relative to tls_segment()->vaddr() |
7502 | value -= dtp_offset; | |
7503 | break; | |
7504 | ||
45965137 AM |
7505 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
7506 | if (gsym != NULL) | |
7507 | value += object->ppc64_local_entry_offset(gsym); | |
7508 | else | |
7509 | value += object->ppc64_local_entry_offset(r_sym); | |
7510 | break; | |
7511 | ||
42cacb20 DE |
7512 | default: |
7513 | break; | |
7514 | } | |
7515 | ||
dd93cd0a | 7516 | Insn branch_bit = 0; |
42cacb20 DE |
7517 | switch (r_type) |
7518 | { | |
dd93cd0a AM |
7519 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
7520 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7521 | branch_bit = 1 << 21; | |
7522 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7523 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
7524 | { | |
7525 | Insn* iview = reinterpret_cast<Insn*>(view); | |
7526 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7527 | insn &= ~(1 << 21); | |
7528 | insn |= branch_bit; | |
7529 | if (this->is_isa_v2) | |
7530 | { | |
7531 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
7532 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
7533 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
7534 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
7535 | insn |= 0x02 << 21; | |
7536 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
7537 | insn |= 0x08 << 21; | |
7538 | else | |
7539 | break; | |
7540 | } | |
7541 | else | |
7542 | { | |
7543 | // Invert 'y' bit if not the default. | |
7544 | if (static_cast<Signed_address>(value) < 0) | |
7545 | insn ^= 1 << 21; | |
7546 | } | |
7547 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7548 | } | |
7549 | break; | |
7550 | ||
7551 | default: | |
7552 | break; | |
7553 | } | |
7554 | ||
aba6bc71 AM |
7555 | if (size == 64) |
7556 | { | |
7557 | // Multi-instruction sequences that access the TOC can be | |
7558 | // optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
7559 | // to nop; addi rb,r2,x; | |
7560 | switch (r_type) | |
7561 | { | |
7562 | default: | |
7563 | break; | |
7564 | ||
7565 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7566 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7567 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7568 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7569 | case elfcpp::R_POWERPC_GOT16_HA: | |
7570 | case elfcpp::R_PPC64_TOC16_HA: | |
d8f5a274 | 7571 | if (parameters->options().toc_optimize()) |
aba6bc71 AM |
7572 | { |
7573 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7574 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7575 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
7576 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
7577 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7578 | _("toc optimization is not supported " | |
7579 | "for %#08x instruction"), insn); | |
7580 | else if (value + 0x8000 < 0x10000) | |
7581 | { | |
7582 | elfcpp::Swap<32, big_endian>::writeval(iview, nop); | |
7583 | return true; | |
7584 | } | |
7585 | } | |
7586 | break; | |
7587 | ||
7588 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
7589 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7590 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
7591 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
7592 | case elfcpp::R_POWERPC_GOT16_LO: | |
7593 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7594 | case elfcpp::R_PPC64_TOC16_LO: | |
7595 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
d8f5a274 | 7596 | if (parameters->options().toc_optimize()) |
aba6bc71 AM |
7597 | { |
7598 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7599 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7600 | if (!ok_lo_toc_insn(insn)) | |
7601 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7602 | _("toc optimization is not supported " | |
7603 | "for %#08x instruction"), insn); | |
7604 | else if (value + 0x8000 < 0x10000) | |
7605 | { | |
7606 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) | |
7607 | { | |
7608 | // Transform addic to addi when we change reg. | |
7609 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
7610 | insn |= (14u << 26) | (2 << 16); | |
7611 | } | |
7612 | else | |
7613 | { | |
7614 | insn &= ~(0x1f << 16); | |
7615 | insn |= 2 << 16; | |
7616 | } | |
7617 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
7618 | } | |
7619 | } | |
7620 | break; | |
7621 | } | |
7622 | } | |
7623 | ||
f4baf0d4 | 7624 | typename Reloc::Overflow_check overflow = Reloc::CHECK_NONE; |
b80eed39 | 7625 | elfcpp::Shdr<size, big_endian> shdr(relinfo->data_shdr); |
dd93cd0a AM |
7626 | switch (r_type) |
7627 | { | |
7628 | case elfcpp::R_POWERPC_ADDR32: | |
7629 | case elfcpp::R_POWERPC_UADDR32: | |
7630 | if (size == 64) | |
f4baf0d4 | 7631 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7632 | break; |
7633 | ||
7634 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a | 7635 | if (size == 64) |
f4baf0d4 | 7636 | overflow = Reloc::CHECK_SIGNED; |
dd93cd0a AM |
7637 | break; |
7638 | ||
dd93cd0a | 7639 | case elfcpp::R_POWERPC_UADDR16: |
f4baf0d4 | 7640 | overflow = Reloc::CHECK_BITFIELD; |
42cacb20 DE |
7641 | break; |
7642 | ||
b80eed39 AM |
7643 | case elfcpp::R_POWERPC_ADDR16: |
7644 | // We really should have three separate relocations, | |
7645 | // one for 16-bit data, one for insns with 16-bit signed fields, | |
7646 | // and one for insns with 16-bit unsigned fields. | |
7647 | overflow = Reloc::CHECK_BITFIELD; | |
7648 | if ((shdr.get_sh_flags() & elfcpp::SHF_EXECINSTR) != 0) | |
7649 | overflow = Reloc::CHECK_LOW_INSN; | |
7650 | break; | |
7651 | ||
f9c6b907 AM |
7652 | case elfcpp::R_POWERPC_ADDR16_HI: |
7653 | case elfcpp::R_POWERPC_ADDR16_HA: | |
7654 | case elfcpp::R_POWERPC_GOT16_HI: | |
7655 | case elfcpp::R_POWERPC_GOT16_HA: | |
7656 | case elfcpp::R_POWERPC_PLT16_HI: | |
7657 | case elfcpp::R_POWERPC_PLT16_HA: | |
7658 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
7659 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
7660 | case elfcpp::R_PPC64_TOC16_HI: | |
7661 | case elfcpp::R_PPC64_TOC16_HA: | |
7662 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
7663 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
7664 | case elfcpp::R_POWERPC_TPREL16_HI: | |
7665 | case elfcpp::R_POWERPC_TPREL16_HA: | |
7666 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7667 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7668 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7669 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7670 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7671 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7672 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7673 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7674 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7675 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7676 | case elfcpp::R_POWERPC_REL16_HI: | |
7677 | case elfcpp::R_POWERPC_REL16_HA: | |
b80eed39 AM |
7678 | if (size != 32) |
7679 | overflow = Reloc::CHECK_HIGH_INSN; | |
7680 | break; | |
7681 | ||
dd93cd0a AM |
7682 | case elfcpp::R_POWERPC_REL16: |
7683 | case elfcpp::R_PPC64_TOC16: | |
7684 | case elfcpp::R_POWERPC_GOT16: | |
7685 | case elfcpp::R_POWERPC_SECTOFF: | |
7686 | case elfcpp::R_POWERPC_TPREL16: | |
7687 | case elfcpp::R_POWERPC_DTPREL16: | |
b80eed39 AM |
7688 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
7689 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
7690 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
7691 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
7692 | overflow = Reloc::CHECK_LOW_INSN; | |
7693 | break; | |
7694 | ||
7695 | case elfcpp::R_POWERPC_ADDR24: | |
7696 | case elfcpp::R_POWERPC_ADDR14: | |
7697 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7698 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7699 | case elfcpp::R_PPC64_ADDR16_DS: | |
7700 | case elfcpp::R_POWERPC_REL24: | |
7701 | case elfcpp::R_PPC_PLTREL24: | |
7702 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a AM |
7703 | case elfcpp::R_PPC64_TPREL16_DS: |
7704 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7705 | case elfcpp::R_PPC64_TOC16_DS: | |
7706 | case elfcpp::R_PPC64_GOT16_DS: | |
7707 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7708 | case elfcpp::R_POWERPC_REL14: | |
7709 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7710 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
f4baf0d4 | 7711 | overflow = Reloc::CHECK_SIGNED; |
42cacb20 | 7712 | break; |
dd93cd0a | 7713 | } |
42cacb20 | 7714 | |
b80eed39 AM |
7715 | if (overflow == Reloc::CHECK_LOW_INSN |
7716 | || overflow == Reloc::CHECK_HIGH_INSN) | |
7717 | { | |
7718 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
7719 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
7720 | ||
a47622ac AM |
7721 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
7722 | overflow = Reloc::CHECK_BITFIELD; | |
7723 | else if (overflow == Reloc::CHECK_LOW_INSN | |
7724 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
7725 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
7726 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
7727 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
7728 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
7729 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 | 7730 | overflow = Reloc::CHECK_UNSIGNED; |
e30880c2 CC |
7731 | else |
7732 | overflow = Reloc::CHECK_SIGNED; | |
b80eed39 AM |
7733 | } |
7734 | ||
3ea0a085 | 7735 | typename Powerpc_relocate_functions<size, big_endian>::Status status |
f4baf0d4 | 7736 | = Powerpc_relocate_functions<size, big_endian>::STATUS_OK; |
dd93cd0a AM |
7737 | switch (r_type) |
7738 | { | |
7739 | case elfcpp::R_POWERPC_NONE: | |
7740 | case elfcpp::R_POWERPC_TLS: | |
7741 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
7742 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
42cacb20 DE |
7743 | break; |
7744 | ||
7745 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 7746 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 7747 | case elfcpp::R_PPC64_TOC: |
45965137 | 7748 | case elfcpp::R_PPC64_ADDR64_LOCAL: |
dd93cd0a AM |
7749 | Reloc::addr64(view, value); |
7750 | break; | |
7751 | ||
7752 | case elfcpp::R_POWERPC_TPREL: | |
7753 | case elfcpp::R_POWERPC_DTPREL: | |
7754 | if (size == 64) | |
7755 | Reloc::addr64(view, value); | |
7756 | else | |
3ea0a085 | 7757 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7758 | break; |
7759 | ||
7760 | case elfcpp::R_PPC64_UADDR64: | |
7761 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
7762 | break; |
7763 | ||
7764 | case elfcpp::R_POWERPC_ADDR32: | |
3ea0a085 | 7765 | status = Reloc::addr32(view, value, overflow); |
dd93cd0a AM |
7766 | break; |
7767 | ||
acc276d8 | 7768 | case elfcpp::R_POWERPC_REL32: |
dd93cd0a | 7769 | case elfcpp::R_POWERPC_UADDR32: |
3ea0a085 | 7770 | status = Reloc::addr32_u(view, value, overflow); |
dd93cd0a AM |
7771 | break; |
7772 | ||
7773 | case elfcpp::R_POWERPC_ADDR24: | |
7774 | case elfcpp::R_POWERPC_REL24: | |
7775 | case elfcpp::R_PPC_PLTREL24: | |
7776 | case elfcpp::R_PPC_LOCAL24PC: | |
3ea0a085 | 7777 | status = Reloc::addr24(view, value, overflow); |
42cacb20 DE |
7778 | break; |
7779 | ||
dd93cd0a AM |
7780 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
7781 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
ec86f434 AM |
7782 | case elfcpp::R_POWERPC_GOT_TPREL16: |
7783 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
dd93cd0a AM |
7784 | if (size == 64) |
7785 | { | |
ec86f434 | 7786 | // On ppc64 these are all ds form |
3ea0a085 | 7787 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
7788 | break; |
7789 | } | |
cf43a2fe | 7790 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 7791 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 7792 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 7793 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 7794 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
7795 | case elfcpp::R_POWERPC_TPREL16: |
7796 | case elfcpp::R_POWERPC_DTPREL16: | |
7797 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
7798 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
cf43a2fe | 7799 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 7800 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 7801 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 7802 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 7803 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
7804 | case elfcpp::R_POWERPC_TPREL16_LO: |
7805 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
7806 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
7807 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
3ea0a085 | 7808 | status = Reloc::addr16(view, value, overflow); |
dd93cd0a AM |
7809 | break; |
7810 | ||
7811 | case elfcpp::R_POWERPC_UADDR16: | |
3ea0a085 | 7812 | status = Reloc::addr16_u(view, value, overflow); |
42cacb20 DE |
7813 | break; |
7814 | ||
f9c6b907 AM |
7815 | case elfcpp::R_PPC64_ADDR16_HIGH: |
7816 | case elfcpp::R_PPC64_TPREL16_HIGH: | |
7817 | case elfcpp::R_PPC64_DTPREL16_HIGH: | |
7818 | if (size == 32) | |
7819 | // R_PPC_EMB_MRKREF, R_PPC_EMB_RELST_LO, R_PPC_EMB_RELST_HA | |
7820 | goto unsupp; | |
cf43a2fe | 7821 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 7822 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 7823 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 7824 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 7825 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
7826 | case elfcpp::R_POWERPC_TPREL16_HI: |
7827 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
7828 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
7829 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
7830 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
7831 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
7832 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
7833 | break; |
7834 | ||
f9c6b907 AM |
7835 | case elfcpp::R_PPC64_ADDR16_HIGHA: |
7836 | case elfcpp::R_PPC64_TPREL16_HIGHA: | |
7837 | case elfcpp::R_PPC64_DTPREL16_HIGHA: | |
7838 | if (size == 32) | |
7839 | // R_PPC_EMB_RELSEC16, R_PPC_EMB_RELST_HI, R_PPC_EMB_BIT_FLD | |
7840 | goto unsupp; | |
cf43a2fe | 7841 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 7842 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 7843 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 7844 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 7845 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
7846 | case elfcpp::R_POWERPC_TPREL16_HA: |
7847 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
7848 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
7849 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
7850 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
7851 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
7852 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
7853 | break; |
7854 | ||
dd93cd0a AM |
7855 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
7856 | if (size == 32) | |
7857 | // R_PPC_EMB_NADDR16_LO | |
7858 | goto unsupp; | |
7859 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
7860 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
7861 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
7862 | break; |
7863 | ||
dd93cd0a AM |
7864 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
7865 | if (size == 32) | |
7866 | // R_PPC_EMB_NADDR16_HI | |
7867 | goto unsupp; | |
7868 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
7869 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
7870 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
7871 | break; |
7872 | ||
dd93cd0a AM |
7873 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
7874 | if (size == 32) | |
7875 | // R_PPC_EMB_NADDR16_HA | |
7876 | goto unsupp; | |
7877 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
7878 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
7879 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
7880 | break; |
7881 | ||
dd93cd0a AM |
7882 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
7883 | if (size == 32) | |
7884 | // R_PPC_EMB_SDAI16 | |
7885 | goto unsupp; | |
7886 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
7887 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
7888 | Reloc::addr16_ha3(view, value); | |
7889 | break; | |
7890 | ||
7891 | case elfcpp::R_PPC64_DTPREL16_DS: | |
7892 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
7893 | if (size == 32) | |
7894 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
7895 | goto unsupp; | |
7896 | case elfcpp::R_PPC64_TPREL16_DS: | |
7897 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
7898 | if (size == 32) | |
7899 | // R_PPC_TLSGD, R_PPC_TLSLD | |
7900 | break; | |
cf43a2fe AM |
7901 | case elfcpp::R_PPC64_ADDR16_DS: |
7902 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
7903 | case elfcpp::R_PPC64_TOC16_DS: |
7904 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
7905 | case elfcpp::R_PPC64_GOT16_DS: |
7906 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
7907 | case elfcpp::R_PPC64_SECTOFF_DS: | |
7908 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3ea0a085 | 7909 | status = Reloc::addr16_ds(view, value, overflow); |
dd93cd0a AM |
7910 | break; |
7911 | ||
7912 | case elfcpp::R_POWERPC_ADDR14: | |
7913 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
7914 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
7915 | case elfcpp::R_POWERPC_REL14: | |
7916 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
7917 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3ea0a085 | 7918 | status = Reloc::addr14(view, value, overflow); |
42cacb20 DE |
7919 | break; |
7920 | ||
7921 | case elfcpp::R_POWERPC_COPY: | |
7922 | case elfcpp::R_POWERPC_GLOB_DAT: | |
7923 | case elfcpp::R_POWERPC_JMP_SLOT: | |
7924 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 7925 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
7926 | case elfcpp::R_PPC64_JMP_IREL: |
7927 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
7928 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
7929 | _("unexpected reloc %u in object file"), | |
7930 | r_type); | |
7931 | break; | |
7932 | ||
dd93cd0a AM |
7933 | case elfcpp::R_PPC_EMB_SDA21: |
7934 | if (size == 32) | |
7935 | goto unsupp; | |
7936 | else | |
7937 | { | |
7938 | // R_PPC64_TOCSAVE. For the time being this can be ignored. | |
7939 | } | |
7940 | break; | |
7941 | ||
7942 | case elfcpp::R_PPC_EMB_SDA2I16: | |
7943 | case elfcpp::R_PPC_EMB_SDA2REL: | |
7944 | if (size == 32) | |
7945 | goto unsupp; | |
7946 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
7947 | break; |
7948 | ||
dd93cd0a AM |
7949 | case elfcpp::R_POWERPC_PLT32: |
7950 | case elfcpp::R_POWERPC_PLTREL32: | |
7951 | case elfcpp::R_POWERPC_PLT16_LO: | |
7952 | case elfcpp::R_POWERPC_PLT16_HI: | |
7953 | case elfcpp::R_POWERPC_PLT16_HA: | |
7954 | case elfcpp::R_PPC_SDAREL16: | |
7955 | case elfcpp::R_POWERPC_ADDR30: | |
7956 | case elfcpp::R_PPC64_PLT64: | |
7957 | case elfcpp::R_PPC64_PLTREL64: | |
7958 | case elfcpp::R_PPC64_PLTGOT16: | |
7959 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
7960 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
7961 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
7962 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
7963 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
7964 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
dd93cd0a AM |
7965 | case elfcpp::R_PPC_EMB_RELSDA: |
7966 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 7967 | default: |
dd93cd0a | 7968 | unsupp: |
42cacb20 DE |
7969 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
7970 | _("unsupported reloc %u"), | |
7971 | r_type); | |
7972 | break; | |
7973 | } | |
0cfb0717 | 7974 | if (status != Powerpc_relocate_functions<size, big_endian>::STATUS_OK |
3ffaac20 AM |
7975 | && (has_stub_value |
7976 | || !(gsym != NULL | |
282c9750 | 7977 | && gsym->is_undefined() |
3ffaac20 | 7978 | && is_branch_reloc(r_type)))) |
0cfb0717 AM |
7979 | { |
7980 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
7981 | _("relocation overflow")); | |
7982 | if (has_stub_value) | |
7983 | gold_info(_("try relinking with a smaller --stub-group-size")); | |
7984 | } | |
42cacb20 DE |
7985 | |
7986 | return true; | |
7987 | } | |
7988 | ||
42cacb20 DE |
7989 | // Relocate section data. |
7990 | ||
7991 | template<int size, bool big_endian> | |
7992 | void | |
7993 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
7994 | const Relocate_info<size, big_endian>* relinfo, |
7995 | unsigned int sh_type, | |
7996 | const unsigned char* prelocs, | |
7997 | size_t reloc_count, | |
7998 | Output_section* output_section, | |
7999 | bool needs_special_offset_handling, | |
8000 | unsigned char* view, | |
c9269dff | 8001 | Address address, |
d83ce4e3 AM |
8002 | section_size_type view_size, |
8003 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
8004 | { |
8005 | typedef Target_powerpc<size, big_endian> Powerpc; | |
8006 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
168a4726 AM |
8007 | typedef typename Target_powerpc<size, big_endian>::Relocate_comdat_behavior |
8008 | Powerpc_comdat_behavior; | |
42cacb20 DE |
8009 | |
8010 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8011 | ||
8012 | gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA, | |
168a4726 | 8013 | Powerpc_relocate, Powerpc_comdat_behavior>( |
42cacb20 DE |
8014 | relinfo, |
8015 | this, | |
8016 | prelocs, | |
8017 | reloc_count, | |
8018 | output_section, | |
8019 | needs_special_offset_handling, | |
8020 | view, | |
8021 | address, | |
364c7fa5 ILT |
8022 | view_size, |
8023 | reloc_symbol_changes); | |
42cacb20 DE |
8024 | } |
8025 | ||
cf43a2fe | 8026 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 8027 | { |
cf43a2fe AM |
8028 | public: |
8029 | // Return the strategy to use for a local symbol which is not a | |
8030 | // section symbol, given the relocation type. | |
8031 | inline Relocatable_relocs::Reloc_strategy | |
8032 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
8033 | { | |
8034 | if (r_type == 0 && r_sym == 0) | |
8035 | return Relocatable_relocs::RELOC_DISCARD; | |
8036 | return Relocatable_relocs::RELOC_COPY; | |
8037 | } | |
8038 | ||
8039 | // Return the strategy to use for a local symbol which is a section | |
8040 | // symbol, given the relocation type. | |
8041 | inline Relocatable_relocs::Reloc_strategy | |
8042 | local_section_strategy(unsigned int, Relobj*) | |
8043 | { | |
8044 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
8045 | } | |
8046 | ||
8047 | // Return the strategy to use for a global symbol, given the | |
8048 | // relocation type, the object, and the symbol index. | |
8049 | inline Relocatable_relocs::Reloc_strategy | |
8050 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
8051 | { | |
8052 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
8053 | return Relocatable_relocs::RELOC_SPECIAL; | |
8054 | return Relocatable_relocs::RELOC_COPY; | |
8055 | } | |
8056 | }; | |
42cacb20 DE |
8057 | |
8058 | // Scan the relocs during a relocatable link. | |
8059 | ||
8060 | template<int size, bool big_endian> | |
8061 | void | |
8062 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
8063 | Symbol_table* symtab, |
8064 | Layout* layout, | |
8065 | Sized_relobj_file<size, big_endian>* object, | |
8066 | unsigned int data_shndx, | |
8067 | unsigned int sh_type, | |
8068 | const unsigned char* prelocs, | |
8069 | size_t reloc_count, | |
8070 | Output_section* output_section, | |
8071 | bool needs_special_offset_handling, | |
8072 | size_t local_symbol_count, | |
8073 | const unsigned char* plocal_symbols, | |
8074 | Relocatable_relocs* rr) | |
42cacb20 DE |
8075 | { |
8076 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8077 | ||
42cacb20 | 8078 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, |
d83ce4e3 | 8079 | Powerpc_scan_relocatable_reloc>( |
42cacb20 DE |
8080 | symtab, |
8081 | layout, | |
8082 | object, | |
8083 | data_shndx, | |
8084 | prelocs, | |
8085 | reloc_count, | |
8086 | output_section, | |
8087 | needs_special_offset_handling, | |
8088 | local_symbol_count, | |
8089 | plocal_symbols, | |
8090 | rr); | |
8091 | } | |
8092 | ||
7404fe1b | 8093 | // Emit relocations for a section. |
dd93cd0a AM |
8094 | // This is a modified version of the function by the same name in |
8095 | // target-reloc.h. Using relocate_special_relocatable for | |
8096 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
8097 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
8098 | |
8099 | template<int size, bool big_endian> | |
8100 | void | |
7404fe1b | 8101 | Target_powerpc<size, big_endian>::relocate_relocs( |
42cacb20 DE |
8102 | const Relocate_info<size, big_endian>* relinfo, |
8103 | unsigned int sh_type, | |
8104 | const unsigned char* prelocs, | |
8105 | size_t reloc_count, | |
8106 | Output_section* output_section, | |
62fe925a | 8107 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
42cacb20 | 8108 | const Relocatable_relocs* rr, |
cf43a2fe | 8109 | unsigned char*, |
dd93cd0a | 8110 | Address view_address, |
cf43a2fe | 8111 | section_size_type, |
42cacb20 DE |
8112 | unsigned char* reloc_view, |
8113 | section_size_type reloc_view_size) | |
8114 | { | |
8115 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
8116 | ||
cf43a2fe AM |
8117 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
8118 | Reltype; | |
8119 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write | |
8120 | Reltype_write; | |
8121 | const int reloc_size | |
8122 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
cf43a2fe AM |
8123 | |
8124 | Powerpc_relobj<size, big_endian>* const object | |
8125 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
8126 | const unsigned int local_count = object->local_symbol_count(); | |
8127 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 8128 | Address got2_addend = 0; |
cf43a2fe | 8129 | if (got2_shndx != 0) |
c9269dff AM |
8130 | { |
8131 | got2_addend = object->get_output_section_offset(got2_shndx); | |
8132 | gold_assert(got2_addend != invalid_address); | |
8133 | } | |
cf43a2fe AM |
8134 | |
8135 | unsigned char* pwrite = reloc_view; | |
7404fe1b | 8136 | bool zap_next = false; |
cf43a2fe AM |
8137 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
8138 | { | |
8139 | Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i); | |
8140 | if (strategy == Relocatable_relocs::RELOC_DISCARD) | |
8141 | continue; | |
8142 | ||
8143 | Reltype reloc(prelocs); | |
8144 | Reltype_write reloc_write(pwrite); | |
8145 | ||
7404fe1b | 8146 | Address offset = reloc.get_r_offset(); |
cf43a2fe | 8147 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); |
7404fe1b AM |
8148 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); |
8149 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
8150 | const unsigned int orig_r_sym = r_sym; | |
8151 | typename elfcpp::Elf_types<size>::Elf_Swxword addend | |
8152 | = reloc.get_r_addend(); | |
8153 | const Symbol* gsym = NULL; | |
8154 | ||
8155 | if (zap_next) | |
8156 | { | |
8157 | // We could arrange to discard these and other relocs for | |
8158 | // tls optimised sequences in the strategy methods, but for | |
8159 | // now do as BFD ld does. | |
8160 | r_type = elfcpp::R_POWERPC_NONE; | |
8161 | zap_next = false; | |
8162 | } | |
cf43a2fe AM |
8163 | |
8164 | // Get the new symbol index. | |
9215b98b | 8165 | Output_section* os = NULL; |
cf43a2fe AM |
8166 | if (r_sym < local_count) |
8167 | { | |
8168 | switch (strategy) | |
8169 | { | |
8170 | case Relocatable_relocs::RELOC_COPY: | |
8171 | case Relocatable_relocs::RELOC_SPECIAL: | |
7404fe1b | 8172 | if (r_sym != 0) |
dd93cd0a | 8173 | { |
7404fe1b AM |
8174 | r_sym = object->symtab_index(r_sym); |
8175 | gold_assert(r_sym != -1U); | |
dd93cd0a | 8176 | } |
cf43a2fe AM |
8177 | break; |
8178 | ||
8179 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
8180 | { | |
8181 | // We are adjusting a section symbol. We need to find | |
8182 | // the symbol table index of the section symbol for | |
8183 | // the output section corresponding to input section | |
8184 | // in which this symbol is defined. | |
8185 | gold_assert(r_sym < local_count); | |
8186 | bool is_ordinary; | |
8187 | unsigned int shndx = | |
8188 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
8189 | gold_assert(is_ordinary); | |
9215b98b | 8190 | os = object->output_section(shndx); |
cf43a2fe AM |
8191 | gold_assert(os != NULL); |
8192 | gold_assert(os->needs_symtab_index()); | |
7404fe1b | 8193 | r_sym = os->symtab_index(); |
cf43a2fe AM |
8194 | } |
8195 | break; | |
8196 | ||
8197 | default: | |
8198 | gold_unreachable(); | |
8199 | } | |
8200 | } | |
8201 | else | |
8202 | { | |
7404fe1b | 8203 | gsym = object->global_symbol(r_sym); |
cf43a2fe AM |
8204 | gold_assert(gsym != NULL); |
8205 | if (gsym->is_forwarder()) | |
8206 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
8207 | ||
8208 | gold_assert(gsym->has_symtab_index()); | |
7404fe1b | 8209 | r_sym = gsym->symtab_index(); |
cf43a2fe AM |
8210 | } |
8211 | ||
8212 | // Get the new offset--the location in the output section where | |
8213 | // this relocation should be applied. | |
cf43a2fe | 8214 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8215 | offset += offset_in_output_section; |
cf43a2fe AM |
8216 | else |
8217 | { | |
c9269dff AM |
8218 | section_offset_type sot_offset = |
8219 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 8220 | section_offset_type new_sot_offset = |
c9269dff AM |
8221 | output_section->output_offset(object, relinfo->data_shndx, |
8222 | sot_offset); | |
cf43a2fe | 8223 | gold_assert(new_sot_offset != -1); |
7404fe1b | 8224 | offset = new_sot_offset; |
cf43a2fe AM |
8225 | } |
8226 | ||
dd93cd0a AM |
8227 | // In an object file, r_offset is an offset within the section. |
8228 | // In an executable or dynamic object, generated by | |
8229 | // --emit-relocs, r_offset is an absolute address. | |
7404fe1b | 8230 | if (!parameters->options().relocatable()) |
dd93cd0a | 8231 | { |
7404fe1b | 8232 | offset += view_address; |
dd93cd0a | 8233 | if (static_cast<Address>(offset_in_output_section) != invalid_address) |
7404fe1b | 8234 | offset -= offset_in_output_section; |
dd93cd0a AM |
8235 | } |
8236 | ||
cf43a2fe | 8237 | // Handle the reloc addend based on the strategy. |
cf43a2fe AM |
8238 | if (strategy == Relocatable_relocs::RELOC_COPY) |
8239 | ; | |
8240 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
8241 | { | |
7404fe1b | 8242 | const Symbol_value<size>* psymval = object->local_symbol(orig_r_sym); |
9215b98b AM |
8243 | gold_assert(os != NULL); |
8244 | addend = psymval->value(object, addend) - os->address(); | |
cf43a2fe AM |
8245 | } |
8246 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
8247 | { | |
8248 | if (addend >= 32768) | |
8249 | addend += got2_addend; | |
8250 | } | |
8251 | else | |
8252 | gold_unreachable(); | |
8253 | ||
7404fe1b AM |
8254 | if (!parameters->options().relocatable()) |
8255 | { | |
8256 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8257 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
8258 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
8259 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
8260 | { | |
8261 | // First instruction of a global dynamic sequence, | |
8262 | // arg setup insn. | |
8263 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8264 | switch (this->optimize_tls_gd(final)) | |
8265 | { | |
8266 | case tls::TLSOPT_TO_IE: | |
8267 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
8268 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
8269 | break; | |
8270 | case tls::TLSOPT_TO_LE: | |
8271 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
8272 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
8273 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8274 | else | |
8275 | { | |
8276 | r_type = elfcpp::R_POWERPC_NONE; | |
8277 | offset -= 2 * big_endian; | |
8278 | } | |
8279 | break; | |
8280 | default: | |
8281 | break; | |
8282 | } | |
8283 | } | |
8284 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8285 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
8286 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
8287 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
8288 | { | |
8289 | // First instruction of a local dynamic sequence, | |
8290 | // arg setup insn. | |
8291 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8292 | { | |
8293 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
8294 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
8295 | { | |
8296 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8297 | const Output_section* os = relinfo->layout->tls_segment() | |
8298 | ->first_section(); | |
8299 | gold_assert(os != NULL); | |
8300 | gold_assert(os->needs_symtab_index()); | |
8301 | r_sym = os->symtab_index(); | |
8302 | addend = dtp_offset; | |
8303 | } | |
8304 | else | |
8305 | { | |
8306 | r_type = elfcpp::R_POWERPC_NONE; | |
8307 | offset -= 2 * big_endian; | |
8308 | } | |
8309 | } | |
8310 | } | |
8311 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8312 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
8313 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
8314 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
8315 | { | |
8316 | // First instruction of initial exec sequence. | |
8317 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8318 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8319 | { | |
8320 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
8321 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
8322 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
8323 | else | |
8324 | { | |
8325 | r_type = elfcpp::R_POWERPC_NONE; | |
8326 | offset -= 2 * big_endian; | |
8327 | } | |
8328 | } | |
8329 | } | |
8330 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
8331 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
8332 | { | |
8333 | // Second instruction of a global dynamic sequence, | |
8334 | // the __tls_get_addr call | |
8335 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8336 | switch (this->optimize_tls_gd(final)) | |
8337 | { | |
8338 | case tls::TLSOPT_TO_IE: | |
8339 | r_type = elfcpp::R_POWERPC_NONE; | |
8340 | zap_next = true; | |
8341 | break; | |
8342 | case tls::TLSOPT_TO_LE: | |
8343 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8344 | offset += 2 * big_endian; | |
8345 | zap_next = true; | |
8346 | break; | |
8347 | default: | |
8348 | break; | |
8349 | } | |
8350 | } | |
8351 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
8352 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
8353 | { | |
8354 | // Second instruction of a local dynamic sequence, | |
8355 | // the __tls_get_addr call | |
8356 | if (this->optimize_tls_ld() == tls::TLSOPT_TO_LE) | |
8357 | { | |
8358 | const Output_section* os = relinfo->layout->tls_segment() | |
8359 | ->first_section(); | |
8360 | gold_assert(os != NULL); | |
8361 | gold_assert(os->needs_symtab_index()); | |
8362 | r_sym = os->symtab_index(); | |
8363 | addend = dtp_offset; | |
8364 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8365 | offset += 2 * big_endian; | |
8366 | zap_next = true; | |
8367 | } | |
8368 | } | |
8369 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
8370 | { | |
8371 | // Second instruction of an initial exec sequence | |
8372 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
8373 | if (this->optimize_tls_ie(final) == tls::TLSOPT_TO_LE) | |
8374 | { | |
8375 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
8376 | offset += 2 * big_endian; | |
8377 | } | |
8378 | } | |
8379 | } | |
8380 | ||
8381 | reloc_write.put_r_offset(offset); | |
8382 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
8383 | reloc_write.put_r_addend(addend); | |
cf43a2fe AM |
8384 | |
8385 | pwrite += reloc_size; | |
8386 | } | |
8387 | ||
8388 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
8389 | == reloc_view_size); | |
42cacb20 DE |
8390 | } |
8391 | ||
ec661b9d | 8392 | // Return the value to use for a dynamic symbol which requires special |
42cacb20 DE |
8393 | // treatment. This is how we support equality comparisons of function |
8394 | // pointers across shared library boundaries, as described in the | |
8395 | // processor specific ABI supplement. | |
8396 | ||
8397 | template<int size, bool big_endian> | |
8398 | uint64_t | |
8399 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
8400 | { | |
cf43a2fe AM |
8401 | if (size == 32) |
8402 | { | |
8403 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
ec661b9d AM |
8404 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8405 | p != this->stub_tables_.end(); | |
8406 | ++p) | |
8407 | { | |
8408 | Address off = (*p)->find_plt_call_entry(gsym); | |
8409 | if (off != invalid_address) | |
8410 | return (*p)->stub_address() + off; | |
8411 | } | |
c9824451 | 8412 | } |
9055360d AM |
8413 | else if (this->abiversion() >= 2) |
8414 | { | |
faa2211d AM |
8415 | Address off = this->glink_section()->find_global_entry(gsym); |
8416 | if (off != invalid_address) | |
9055360d AM |
8417 | return this->glink_section()->global_entry_address() + off; |
8418 | } | |
ec661b9d | 8419 | gold_unreachable(); |
c9824451 AM |
8420 | } |
8421 | ||
8422 | // Return the PLT address to use for a local symbol. | |
8423 | template<int size, bool big_endian> | |
8424 | uint64_t | |
8425 | Target_powerpc<size, big_endian>::do_plt_address_for_local( | |
8426 | const Relobj* object, | |
8427 | unsigned int symndx) const | |
8428 | { | |
8429 | if (size == 32) | |
8430 | { | |
8431 | const Sized_relobj<size, big_endian>* relobj | |
8432 | = static_cast<const Sized_relobj<size, big_endian>*>(object); | |
ec661b9d AM |
8433 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8434 | p != this->stub_tables_.end(); | |
8435 | ++p) | |
8436 | { | |
8437 | Address off = (*p)->find_plt_call_entry(relobj->sized_relobj(), | |
8438 | symndx); | |
8439 | if (off != invalid_address) | |
8440 | return (*p)->stub_address() + off; | |
8441 | } | |
c9824451 | 8442 | } |
ec661b9d | 8443 | gold_unreachable(); |
c9824451 AM |
8444 | } |
8445 | ||
8446 | // Return the PLT address to use for a global symbol. | |
8447 | template<int size, bool big_endian> | |
8448 | uint64_t | |
8449 | Target_powerpc<size, big_endian>::do_plt_address_for_global( | |
8450 | const Symbol* gsym) const | |
8451 | { | |
8452 | if (size == 32) | |
8453 | { | |
ec661b9d AM |
8454 | for (typename Stub_tables::const_iterator p = this->stub_tables_.begin(); |
8455 | p != this->stub_tables_.end(); | |
8456 | ++p) | |
8457 | { | |
8458 | Address off = (*p)->find_plt_call_entry(gsym); | |
8459 | if (off != invalid_address) | |
8460 | return (*p)->stub_address() + off; | |
8461 | } | |
cf43a2fe | 8462 | } |
9055360d AM |
8463 | else if (this->abiversion() >= 2) |
8464 | { | |
faa2211d AM |
8465 | Address off = this->glink_section()->find_global_entry(gsym); |
8466 | if (off != invalid_address) | |
9055360d AM |
8467 | return this->glink_section()->global_entry_address() + off; |
8468 | } | |
ec661b9d | 8469 | gold_unreachable(); |
42cacb20 DE |
8470 | } |
8471 | ||
bd73a62d AM |
8472 | // Return the offset to use for the GOT_INDX'th got entry which is |
8473 | // for a local tls symbol specified by OBJECT, SYMNDX. | |
8474 | template<int size, bool big_endian> | |
8475 | int64_t | |
8476 | Target_powerpc<size, big_endian>::do_tls_offset_for_local( | |
8477 | const Relobj* object, | |
8478 | unsigned int symndx, | |
8479 | unsigned int got_indx) const | |
8480 | { | |
8481 | const Powerpc_relobj<size, big_endian>* ppc_object | |
8482 | = static_cast<const Powerpc_relobj<size, big_endian>*>(object); | |
8483 | if (ppc_object->local_symbol(symndx)->is_tls_symbol()) | |
8484 | { | |
8485 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8486 | got_type <= GOT_TYPE_TPREL; | |
8487 | got_type = Got_type(got_type + 1)) | |
8488 | if (ppc_object->local_has_got_offset(symndx, got_type)) | |
8489 | { | |
8490 | unsigned int off = ppc_object->local_got_offset(symndx, got_type); | |
8491 | if (got_type == GOT_TYPE_TLSGD) | |
8492 | off += size / 8; | |
8493 | if (off == got_indx * (size / 8)) | |
8494 | { | |
8495 | if (got_type == GOT_TYPE_TPREL) | |
8496 | return -tp_offset; | |
8497 | else | |
8498 | return -dtp_offset; | |
8499 | } | |
8500 | } | |
8501 | } | |
8502 | gold_unreachable(); | |
8503 | } | |
8504 | ||
8505 | // Return the offset to use for the GOT_INDX'th got entry which is | |
8506 | // for global tls symbol GSYM. | |
8507 | template<int size, bool big_endian> | |
8508 | int64_t | |
8509 | Target_powerpc<size, big_endian>::do_tls_offset_for_global( | |
8510 | Symbol* gsym, | |
8511 | unsigned int got_indx) const | |
8512 | { | |
8513 | if (gsym->type() == elfcpp::STT_TLS) | |
8514 | { | |
8515 | for (Got_type got_type = GOT_TYPE_TLSGD; | |
8516 | got_type <= GOT_TYPE_TPREL; | |
8517 | got_type = Got_type(got_type + 1)) | |
8518 | if (gsym->has_got_offset(got_type)) | |
8519 | { | |
8520 | unsigned int off = gsym->got_offset(got_type); | |
8521 | if (got_type == GOT_TYPE_TLSGD) | |
8522 | off += size / 8; | |
8523 | if (off == got_indx * (size / 8)) | |
8524 | { | |
8525 | if (got_type == GOT_TYPE_TPREL) | |
8526 | return -tp_offset; | |
8527 | else | |
8528 | return -dtp_offset; | |
8529 | } | |
8530 | } | |
8531 | } | |
8532 | gold_unreachable(); | |
8533 | } | |
8534 | ||
42cacb20 DE |
8535 | // The selector for powerpc object files. |
8536 | ||
8537 | template<int size, bool big_endian> | |
8538 | class Target_selector_powerpc : public Target_selector | |
8539 | { | |
8540 | public: | |
8541 | Target_selector_powerpc() | |
edc27beb AM |
8542 | : Target_selector(size == 64 ? elfcpp::EM_PPC64 : elfcpp::EM_PPC, |
8543 | size, big_endian, | |
03ef7571 ILT |
8544 | (size == 64 |
8545 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
8546 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
8547 | (size == 64 | |
8548 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
8549 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
8550 | { } |
8551 | ||
2e702c99 RM |
8552 | virtual Target* |
8553 | do_instantiate_target() | |
7f055c20 | 8554 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
8555 | }; |
8556 | ||
8557 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
8558 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
8559 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
8560 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
8561 | ||
decdd3bc AM |
8562 | // Instantiate these constants for -O0 |
8563 | template<int size, bool big_endian> | |
8564 | const int Output_data_glink<size, big_endian>::pltresolve_size; | |
8565 | template<int size, bool big_endian> | |
9055360d AM |
8566 | const typename Output_data_glink<size, big_endian>::Address |
8567 | Output_data_glink<size, big_endian>::invalid_address; | |
8568 | template<int size, bool big_endian> | |
decdd3bc AM |
8569 | const typename Stub_table<size, big_endian>::Address |
8570 | Stub_table<size, big_endian>::invalid_address; | |
8571 | template<int size, bool big_endian> | |
8572 | const typename Target_powerpc<size, big_endian>::Address | |
8573 | Target_powerpc<size, big_endian>::invalid_address; | |
8574 | ||
42cacb20 | 8575 | } // End anonymous namespace. |