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42cacb20 DE |
1 | // powerpc.cc -- powerpc target support for gold. |
2 | ||
2e702c99 | 3 | // Copyright 2008, 2009, 2010, 2011, 2012 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 | ||
26 | #include "elfcpp.h" | |
27 | #include "parameters.h" | |
28 | #include "reloc.h" | |
29 | #include "powerpc.h" | |
30 | #include "object.h" | |
31 | #include "symtab.h" | |
32 | #include "layout.h" | |
33 | #include "output.h" | |
34 | #include "copy-relocs.h" | |
35 | #include "target.h" | |
36 | #include "target-reloc.h" | |
37 | #include "target-select.h" | |
38 | #include "tls.h" | |
39 | #include "errors.h" | |
f345227a | 40 | #include "gc.h" |
42cacb20 DE |
41 | |
42 | namespace | |
43 | { | |
44 | ||
45 | using namespace gold; | |
46 | ||
47 | template<int size, bool big_endian> | |
48 | class Output_data_plt_powerpc; | |
49 | ||
cf43a2fe AM |
50 | template<int size, bool big_endian> |
51 | class Output_data_got_powerpc; | |
52 | ||
53 | template<int size, bool big_endian> | |
54 | class Output_data_glink; | |
55 | ||
56 | template<int size, bool big_endian> | |
57 | class Powerpc_relobj : public Sized_relobj_file<size, big_endian> | |
58 | { | |
59 | public: | |
dd93cd0a | 60 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
c9269dff AM |
61 | typedef typename elfcpp::Elf_types<size>::Elf_Off Offset; |
62 | ||
cf43a2fe AM |
63 | Powerpc_relobj(const std::string& name, Input_file* input_file, off_t offset, |
64 | const typename elfcpp::Ehdr<size, big_endian>& ehdr) | |
65 | : Sized_relobj_file<size, big_endian>(name, input_file, offset, ehdr), | |
c9269dff | 66 | special_(0), opd_ent_shndx_(), opd_ent_off_() |
cf43a2fe AM |
67 | { } |
68 | ||
69 | ~Powerpc_relobj() | |
70 | { } | |
71 | ||
c9269dff | 72 | // The .got2 section shndx. |
cf43a2fe AM |
73 | unsigned int |
74 | got2_shndx() const | |
75 | { | |
76 | if (size == 32) | |
c9269dff | 77 | return this->special_; |
cf43a2fe AM |
78 | else |
79 | return 0; | |
80 | } | |
81 | ||
c9269dff AM |
82 | // The .opd section shndx. |
83 | unsigned int | |
84 | opd_shndx() const | |
85 | { | |
86 | if (size == 32) | |
87 | return 0; | |
88 | else | |
89 | return this->special_; | |
90 | } | |
91 | ||
92 | // Init OPD entry arrays. | |
93 | void | |
94 | init_opd(size_t opd_size) | |
95 | { | |
96 | size_t count = this->opd_ent_ndx(opd_size); | |
97 | this->opd_ent_shndx_.resize(count); | |
98 | this->opd_ent_off_.reserve(count); | |
99 | } | |
100 | ||
101 | // Return section and offset of function entry for .opd + R_OFF. | |
102 | void | |
dd93cd0a | 103 | get_opd_ent(Address r_off, unsigned int* shndx, Address* value) |
c9269dff AM |
104 | { |
105 | size_t ndx = this->opd_ent_ndx(r_off); | |
106 | gold_assert(ndx < this->opd_ent_shndx_.size()); | |
107 | gold_assert(this->opd_ent_shndx_[ndx] != 0); | |
108 | *shndx = this->opd_ent_shndx_[ndx]; | |
109 | *value = this->opd_ent_off_[ndx]; | |
110 | } | |
111 | ||
112 | // Set section and offset of function entry for .opd + R_OFF. | |
113 | void | |
dd93cd0a | 114 | set_opd_ent(Address r_off, unsigned int shndx, Address value) |
c9269dff AM |
115 | { |
116 | size_t ndx = this->opd_ent_ndx(r_off); | |
117 | gold_assert(ndx < this->opd_ent_shndx_.size()); | |
118 | this->opd_ent_shndx_[ndx] = shndx; | |
119 | this->opd_ent_off_[ndx] = value; | |
120 | } | |
121 | ||
122 | // Examine .rela.opd to build info about function entry points. | |
123 | void | |
124 | scan_opd_relocs(size_t reloc_count, | |
125 | const unsigned char* prelocs, | |
126 | const unsigned char* plocal_syms); | |
127 | ||
128 | void | |
129 | do_read_relocs(Read_relocs_data*); | |
130 | ||
cf43a2fe AM |
131 | bool |
132 | do_find_special_sections(Read_symbols_data* sd); | |
133 | ||
dd93cd0a AM |
134 | // Return offset in output GOT section that this object will use |
135 | // as a TOC pointer. Won't be just a constant with multi-toc support. | |
136 | Address | |
137 | toc_base_offset() const | |
138 | { return 0x8000; } | |
139 | ||
cf43a2fe | 140 | private: |
c9269dff AM |
141 | // Return index into opd_ent_shndx or opd_ent_off array for .opd entry |
142 | // at OFF. .opd entries are 24 bytes long, but they can be spaced | |
143 | // 16 bytes apart when the language doesn't use the last 8-byte | |
144 | // word, the environment pointer. Thus dividing the entry section | |
145 | // offset by 16 will give an index into opd_ent_shndx_ and | |
146 | // opd_ent_off_ that works for either layout of .opd. (It leaves | |
147 | // some elements of the vectors unused when .opd entries are spaced | |
148 | // 24 bytes apart, but we don't know the spacing until relocations | |
149 | // are processed, and in any case it is possible for an object to | |
150 | // have some entries spaced 16 bytes apart and others 24 bytes apart.) | |
151 | size_t | |
152 | opd_ent_ndx(size_t off) const | |
153 | { return off >> 4;} | |
154 | ||
155 | // For 32-bit the .got2 section shdnx, for 64-bit the .opd section shndx. | |
156 | unsigned int special_; | |
157 | // The first 8-byte word of an OPD entry gives the address of the | |
158 | // entry point of the function. Relocatable object files have a | |
159 | // relocation on this word. The following two vectors record the | |
160 | // section and offset specified by these relocations. | |
161 | std::vector<unsigned int> opd_ent_shndx_; | |
162 | std::vector<Offset> opd_ent_off_; | |
cf43a2fe AM |
163 | }; |
164 | ||
42cacb20 DE |
165 | template<int size, bool big_endian> |
166 | class Target_powerpc : public Sized_target<size, big_endian> | |
167 | { | |
168 | public: | |
d83ce4e3 AM |
169 | typedef |
170 | Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Reloc_section; | |
c9269dff | 171 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
dd93cd0a | 172 | typedef typename elfcpp::Elf_types<size>::Elf_Swxword Signed_address; |
c9269dff | 173 | static const Address invalid_address = static_cast<Address>(0) - 1; |
dd93cd0a AM |
174 | // Offset of tp and dtp pointers from start of TLS block. |
175 | static const Address tp_offset = 0x7000; | |
176 | static const Address dtp_offset = 0x8000; | |
42cacb20 DE |
177 | |
178 | Target_powerpc() | |
179 | : Sized_target<size, big_endian>(&powerpc_info), | |
cf43a2fe | 180 | got_(NULL), plt_(NULL), glink_(NULL), rela_dyn_(NULL), |
42cacb20 | 181 | copy_relocs_(elfcpp::R_POWERPC_COPY), |
dd93cd0a | 182 | dynbss_(NULL), tlsld_got_offset_(-1U) |
42cacb20 DE |
183 | { |
184 | } | |
185 | ||
2e702c99 | 186 | // Process the relocations to determine unreferenced sections for |
6d03d481 ST |
187 | // garbage collection. |
188 | void | |
ad0f2072 | 189 | gc_process_relocs(Symbol_table* symtab, |
2e702c99 RM |
190 | Layout* layout, |
191 | Sized_relobj_file<size, big_endian>* object, | |
192 | unsigned int data_shndx, | |
193 | unsigned int sh_type, | |
194 | const unsigned char* prelocs, | |
195 | size_t reloc_count, | |
196 | Output_section* output_section, | |
197 | bool needs_special_offset_handling, | |
198 | size_t local_symbol_count, | |
199 | const unsigned char* plocal_symbols); | |
6d03d481 | 200 | |
42cacb20 DE |
201 | // Scan the relocations to look for symbol adjustments. |
202 | void | |
ad0f2072 | 203 | scan_relocs(Symbol_table* symtab, |
42cacb20 | 204 | Layout* layout, |
6fa2a40b | 205 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
206 | unsigned int data_shndx, |
207 | unsigned int sh_type, | |
208 | const unsigned char* prelocs, | |
209 | size_t reloc_count, | |
210 | Output_section* output_section, | |
211 | bool needs_special_offset_handling, | |
212 | size_t local_symbol_count, | |
213 | const unsigned char* plocal_symbols); | |
921b5322 AM |
214 | |
215 | // Map input .toc section to output .got section. | |
216 | const char* | |
217 | do_output_section_name(const Relobj*, const char* name, size_t* plen) const | |
218 | { | |
219 | if (size == 64 && strcmp(name, ".toc") == 0) | |
220 | { | |
221 | *plen = 4; | |
222 | return ".got"; | |
223 | } | |
224 | return NULL; | |
225 | } | |
226 | ||
42cacb20 DE |
227 | // Finalize the sections. |
228 | void | |
f59f41f3 | 229 | do_finalize_sections(Layout*, const Input_objects*, Symbol_table*); |
42cacb20 DE |
230 | |
231 | // Return the value to use for a dynamic which requires special | |
232 | // treatment. | |
233 | uint64_t | |
234 | do_dynsym_value(const Symbol*) const; | |
235 | ||
236 | // Relocate a section. | |
237 | void | |
238 | relocate_section(const Relocate_info<size, big_endian>*, | |
239 | unsigned int sh_type, | |
240 | const unsigned char* prelocs, | |
241 | size_t reloc_count, | |
242 | Output_section* output_section, | |
243 | bool needs_special_offset_handling, | |
244 | unsigned char* view, | |
c9269dff | 245 | Address view_address, |
364c7fa5 ILT |
246 | section_size_type view_size, |
247 | const Reloc_symbol_changes*); | |
42cacb20 DE |
248 | |
249 | // Scan the relocs during a relocatable link. | |
250 | void | |
ad0f2072 | 251 | scan_relocatable_relocs(Symbol_table* symtab, |
42cacb20 | 252 | Layout* layout, |
6fa2a40b | 253 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
254 | unsigned int data_shndx, |
255 | unsigned int sh_type, | |
256 | const unsigned char* prelocs, | |
257 | size_t reloc_count, | |
258 | Output_section* output_section, | |
259 | bool needs_special_offset_handling, | |
260 | size_t local_symbol_count, | |
261 | const unsigned char* plocal_symbols, | |
262 | Relocatable_relocs*); | |
263 | ||
264 | // Relocate a section during a relocatable link. | |
265 | void | |
266 | relocate_for_relocatable(const Relocate_info<size, big_endian>*, | |
267 | unsigned int sh_type, | |
268 | const unsigned char* prelocs, | |
269 | size_t reloc_count, | |
270 | Output_section* output_section, | |
271 | off_t offset_in_output_section, | |
272 | const Relocatable_relocs*, | |
cf43a2fe | 273 | unsigned char*, |
dd93cd0a | 274 | Address view_address, |
cf43a2fe | 275 | section_size_type, |
42cacb20 DE |
276 | unsigned char* reloc_view, |
277 | section_size_type reloc_view_size); | |
278 | ||
279 | // Return whether SYM is defined by the ABI. | |
280 | bool | |
9c2d0ef9 | 281 | do_is_defined_by_abi(const Symbol* sym) const |
42cacb20 | 282 | { |
cf43a2fe | 283 | return strcmp(sym->name(), "__tls_get_addr") == 0; |
42cacb20 DE |
284 | } |
285 | ||
286 | // Return the size of the GOT section. | |
287 | section_size_type | |
0e70b911 | 288 | got_size() const |
42cacb20 DE |
289 | { |
290 | gold_assert(this->got_ != NULL); | |
291 | return this->got_->data_size(); | |
292 | } | |
293 | ||
cf43a2fe AM |
294 | // Get the PLT section. |
295 | const Output_data_plt_powerpc<size, big_endian>* | |
296 | plt_section() const | |
297 | { | |
298 | gold_assert(this->plt_ != NULL); | |
299 | return this->plt_; | |
300 | } | |
301 | ||
302 | // Get the .glink section. | |
303 | const Output_data_glink<size, big_endian>* | |
304 | glink_section() const | |
305 | { | |
306 | gold_assert(this->glink_ != NULL); | |
307 | return this->glink_; | |
308 | } | |
309 | ||
310 | // Get the GOT section. | |
311 | const Output_data_got_powerpc<size, big_endian>* | |
312 | got_section() const | |
313 | { | |
314 | gold_assert(this->got_ != NULL); | |
315 | return this->got_; | |
316 | } | |
317 | ||
cf43a2fe AM |
318 | Object* |
319 | do_make_elf_object(const std::string&, Input_file*, off_t, | |
320 | const elfcpp::Ehdr<size, big_endian>&); | |
321 | ||
0e70b911 CC |
322 | // Return the number of entries in the GOT. |
323 | unsigned int | |
324 | got_entry_count() const | |
325 | { | |
326 | if (this->got_ == NULL) | |
327 | return 0; | |
328 | return this->got_size() / (size / 8); | |
329 | } | |
330 | ||
331 | // Return the number of entries in the PLT. | |
332 | unsigned int | |
333 | plt_entry_count() const; | |
334 | ||
335 | // Return the offset of the first non-reserved PLT entry. | |
336 | unsigned int | |
337 | first_plt_entry_offset() const; | |
338 | ||
339 | // Return the size of each PLT entry. | |
340 | unsigned int | |
341 | plt_entry_size() const; | |
342 | ||
42cacb20 DE |
343 | private: |
344 | ||
345 | // The class which scans relocations. | |
346 | class Scan | |
347 | { | |
348 | public: | |
349 | Scan() | |
350 | : issued_non_pic_error_(false) | |
351 | { } | |
352 | ||
95a2c8d6 RS |
353 | static inline int |
354 | get_reference_flags(unsigned int r_type); | |
355 | ||
42cacb20 | 356 | inline void |
ad0f2072 | 357 | local(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 358 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
359 | unsigned int data_shndx, |
360 | Output_section* output_section, | |
361 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
362 | const elfcpp::Sym<size, big_endian>& lsym); | |
363 | ||
364 | inline void | |
ad0f2072 | 365 | global(Symbol_table* symtab, Layout* layout, Target_powerpc* target, |
6fa2a40b | 366 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
367 | unsigned int data_shndx, |
368 | Output_section* output_section, | |
369 | const elfcpp::Rela<size, big_endian>& reloc, unsigned int r_type, | |
370 | Symbol* gsym); | |
371 | ||
21bb3914 ST |
372 | inline bool |
373 | local_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
374 | Target_powerpc* , | |
2e702c99 | 375 | Sized_relobj_file<size, big_endian>* , |
21bb3914 | 376 | unsigned int , |
2e702c99 RM |
377 | Output_section* , |
378 | const elfcpp::Rela<size, big_endian>& , | |
379 | unsigned int , | |
380 | const elfcpp::Sym<size, big_endian>&) | |
21bb3914 ST |
381 | { return false; } |
382 | ||
383 | inline bool | |
384 | global_reloc_may_be_function_pointer(Symbol_table* , Layout* , | |
385 | Target_powerpc* , | |
2e702c99 RM |
386 | Sized_relobj_file<size, big_endian>* , |
387 | unsigned int , | |
388 | Output_section* , | |
389 | const elfcpp::Rela<size, | |
21bb3914 ST |
390 | big_endian>& , |
391 | unsigned int , Symbol*) | |
392 | { return false; } | |
393 | ||
42cacb20 DE |
394 | private: |
395 | static void | |
6fa2a40b | 396 | unsupported_reloc_local(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
397 | unsigned int r_type); |
398 | ||
399 | static void | |
6fa2a40b | 400 | unsupported_reloc_global(Sized_relobj_file<size, big_endian>*, |
42cacb20 DE |
401 | unsigned int r_type, Symbol*); |
402 | ||
403 | static void | |
404 | generate_tls_call(Symbol_table* symtab, Layout* layout, | |
405 | Target_powerpc* target); | |
406 | ||
407 | void | |
408 | check_non_pic(Relobj*, unsigned int r_type); | |
409 | ||
410 | // Whether we have issued an error about a non-PIC compilation. | |
411 | bool issued_non_pic_error_; | |
412 | }; | |
413 | ||
414 | // The class which implements relocation. | |
415 | class Relocate | |
416 | { | |
417 | public: | |
dd93cd0a AM |
418 | // Use 'at' branch hints when true, 'y' when false. |
419 | // FIXME maybe: set this with an option. | |
420 | static const bool is_isa_v2 = true; | |
421 | ||
422 | enum skip_tls | |
423 | { | |
424 | CALL_NOT_EXPECTED = 0, | |
425 | CALL_EXPECTED = 1, | |
426 | CALL_SKIP = 2 | |
427 | }; | |
428 | ||
429 | Relocate() | |
430 | : call_tls_get_addr_(CALL_NOT_EXPECTED) | |
431 | { } | |
432 | ||
433 | ~Relocate() | |
434 | { | |
435 | if (this->call_tls_get_addr_ != CALL_NOT_EXPECTED) | |
436 | { | |
437 | // FIXME: This needs to specify the location somehow. | |
438 | gold_error(_("missing expected __tls_get_addr call")); | |
439 | } | |
440 | } | |
441 | ||
42cacb20 DE |
442 | // Do a relocation. Return false if the caller should not issue |
443 | // any warnings about this relocation. | |
444 | inline bool | |
445 | relocate(const Relocate_info<size, big_endian>*, Target_powerpc*, | |
031cdbed ILT |
446 | Output_section*, size_t relnum, |
447 | const elfcpp::Rela<size, big_endian>&, | |
42cacb20 DE |
448 | unsigned int r_type, const Sized_symbol<size>*, |
449 | const Symbol_value<size>*, | |
450 | unsigned char*, | |
451 | typename elfcpp::Elf_types<size>::Elf_Addr, | |
452 | section_size_type); | |
453 | ||
dd93cd0a AM |
454 | // This is set if we should skip the next reloc, which should be a |
455 | // call to __tls_get_addr. | |
456 | enum skip_tls call_tls_get_addr_; | |
42cacb20 DE |
457 | }; |
458 | ||
459 | // A class which returns the size required for a relocation type, | |
460 | // used while scanning relocs during a relocatable link. | |
461 | class Relocatable_size_for_reloc | |
462 | { | |
463 | public: | |
464 | unsigned int | |
cf43a2fe AM |
465 | get_size_for_reloc(unsigned int, Relobj*) |
466 | { | |
467 | gold_unreachable(); | |
468 | return 0; | |
469 | } | |
42cacb20 DE |
470 | }; |
471 | ||
dd93cd0a AM |
472 | // Optimize the TLS relocation type based on what we know about the |
473 | // symbol. IS_FINAL is true if the final address of this symbol is | |
474 | // known at link time. | |
475 | ||
476 | tls::Tls_optimization | |
477 | optimize_tls_gd(bool is_final) | |
478 | { | |
479 | // If we are generating a shared library, then we can't do anything | |
480 | // in the linker. | |
481 | if (parameters->options().shared()) | |
482 | return tls::TLSOPT_NONE; | |
483 | ||
484 | if (!is_final) | |
485 | return tls::TLSOPT_TO_IE; | |
486 | return tls::TLSOPT_TO_LE; | |
487 | } | |
488 | ||
489 | tls::Tls_optimization | |
490 | optimize_tls_ld() | |
491 | { | |
492 | if (parameters->options().shared()) | |
493 | return tls::TLSOPT_NONE; | |
494 | ||
495 | return tls::TLSOPT_TO_LE; | |
496 | } | |
497 | ||
498 | tls::Tls_optimization | |
499 | optimize_tls_ie(bool is_final) | |
500 | { | |
501 | if (!is_final || parameters->options().shared()) | |
502 | return tls::TLSOPT_NONE; | |
503 | ||
504 | return tls::TLSOPT_TO_LE; | |
505 | } | |
cf43a2fe | 506 | |
42cacb20 | 507 | // Get the GOT section, creating it if necessary. |
cf43a2fe | 508 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
509 | got_section(Symbol_table*, Layout*); |
510 | ||
cf43a2fe AM |
511 | // Create glink. |
512 | void | |
513 | make_glink_section(Layout*); | |
42cacb20 | 514 | |
cf43a2fe AM |
515 | // Create the PLT section. |
516 | void | |
517 | make_plt_section(Layout*); | |
42cacb20 DE |
518 | |
519 | // Create a PLT entry for a global symbol. | |
520 | void | |
cf43a2fe AM |
521 | make_plt_entry(Layout*, Symbol*, |
522 | const elfcpp::Rela<size, big_endian>&, | |
523 | const Sized_relobj<size, big_endian>* object); | |
42cacb20 | 524 | |
dd93cd0a AM |
525 | // Create a GOT entry for local dynamic __tls_get_addr. |
526 | unsigned int | |
527 | tlsld_got_offset(Symbol_table* symtab, Layout* layout, | |
528 | Sized_relobj_file<size, big_endian>* object); | |
529 | ||
42cacb20 | 530 | unsigned int |
dd93cd0a AM |
531 | tlsld_got_offset() const |
532 | { | |
533 | return this->tlsld_got_offset_; | |
534 | } | |
42cacb20 | 535 | |
42cacb20 DE |
536 | // Get the dynamic reloc section, creating it if necessary. |
537 | Reloc_section* | |
538 | rela_dyn_section(Layout*); | |
539 | ||
42cacb20 DE |
540 | // Copy a relocation against a global symbol. |
541 | void | |
ef9beddf | 542 | copy_reloc(Symbol_table* symtab, Layout* layout, |
2e702c99 | 543 | Sized_relobj_file<size, big_endian>* object, |
42cacb20 DE |
544 | unsigned int shndx, Output_section* output_section, |
545 | Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) | |
546 | { | |
547 | this->copy_relocs_.copy_reloc(symtab, layout, | |
548 | symtab->get_sized_symbol<size>(sym), | |
549 | object, shndx, output_section, | |
550 | reloc, this->rela_dyn_section(layout)); | |
551 | } | |
552 | ||
553 | // Information about this specific target which we pass to the | |
554 | // general Target structure. | |
555 | static Target::Target_info powerpc_info; | |
556 | ||
557 | // The types of GOT entries needed for this platform. | |
0e70b911 CC |
558 | // These values are exposed to the ABI in an incremental link. |
559 | // Do not renumber existing values without changing the version | |
560 | // number of the .gnu_incremental_inputs section. | |
42cacb20 DE |
561 | enum Got_type |
562 | { | |
dd93cd0a AM |
563 | GOT_TYPE_STANDARD, |
564 | GOT_TYPE_TLSGD, // double entry for @got@tlsgd | |
565 | GOT_TYPE_DTPREL, // entry for @got@dtprel | |
566 | GOT_TYPE_TPREL // entry for @got@tprel | |
42cacb20 DE |
567 | }; |
568 | ||
cf43a2fe AM |
569 | // The GOT output section. |
570 | Output_data_got_powerpc<size, big_endian>* got_; | |
571 | // The PLT output section. | |
42cacb20 | 572 | Output_data_plt_powerpc<size, big_endian>* plt_; |
cf43a2fe AM |
573 | // The .glink output section. |
574 | Output_data_glink<size, big_endian>* glink_; | |
575 | // The dynamic reloc output section. | |
42cacb20 DE |
576 | Reloc_section* rela_dyn_; |
577 | // Relocs saved to avoid a COPY reloc. | |
578 | Copy_relocs<elfcpp::SHT_RELA, size, big_endian> copy_relocs_; | |
579 | // Space for variables copied with a COPY reloc. | |
580 | Output_data_space* dynbss_; | |
dd93cd0a AM |
581 | // Offset of the GOT entry for local dynamic __tls_get_addr calls. |
582 | unsigned int tlsld_got_offset_; | |
42cacb20 DE |
583 | }; |
584 | ||
585 | template<> | |
586 | Target::Target_info Target_powerpc<32, true>::powerpc_info = | |
587 | { | |
588 | 32, // size | |
589 | true, // is_big_endian | |
590 | elfcpp::EM_PPC, // machine_code | |
591 | false, // has_make_symbol | |
592 | false, // has_resolve | |
593 | false, // has_code_fill | |
594 | true, // is_default_stack_executable | |
b3ce541e | 595 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
596 | '\0', // wrap_char |
597 | "/usr/lib/ld.so.1", // dynamic_linker | |
598 | 0x10000000, // default_text_segment_address | |
599 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 600 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
601 | false, // isolate_execinstr |
602 | 0, // rosegment_gap | |
8a5e3e08 ILT |
603 | elfcpp::SHN_UNDEF, // small_common_shndx |
604 | elfcpp::SHN_UNDEF, // large_common_shndx | |
605 | 0, // small_common_section_flags | |
05a352e6 DK |
606 | 0, // large_common_section_flags |
607 | NULL, // attributes_section | |
608 | NULL // attributes_vendor | |
42cacb20 DE |
609 | }; |
610 | ||
611 | template<> | |
612 | Target::Target_info Target_powerpc<32, false>::powerpc_info = | |
613 | { | |
614 | 32, // size | |
615 | false, // is_big_endian | |
616 | elfcpp::EM_PPC, // machine_code | |
617 | false, // has_make_symbol | |
618 | false, // has_resolve | |
619 | false, // has_code_fill | |
620 | true, // is_default_stack_executable | |
b3ce541e | 621 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
622 | '\0', // wrap_char |
623 | "/usr/lib/ld.so.1", // dynamic_linker | |
624 | 0x10000000, // default_text_segment_address | |
625 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
8a5e3e08 | 626 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
627 | false, // isolate_execinstr |
628 | 0, // rosegment_gap | |
8a5e3e08 ILT |
629 | elfcpp::SHN_UNDEF, // small_common_shndx |
630 | elfcpp::SHN_UNDEF, // large_common_shndx | |
631 | 0, // small_common_section_flags | |
05a352e6 DK |
632 | 0, // large_common_section_flags |
633 | NULL, // attributes_section | |
634 | NULL // attributes_vendor | |
42cacb20 DE |
635 | }; |
636 | ||
637 | template<> | |
638 | Target::Target_info Target_powerpc<64, true>::powerpc_info = | |
639 | { | |
640 | 64, // size | |
641 | true, // is_big_endian | |
642 | elfcpp::EM_PPC64, // machine_code | |
643 | false, // has_make_symbol | |
644 | false, // has_resolve | |
645 | false, // has_code_fill | |
646 | true, // is_default_stack_executable | |
b3ce541e | 647 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
648 | '\0', // wrap_char |
649 | "/usr/lib/ld.so.1", // dynamic_linker | |
650 | 0x10000000, // default_text_segment_address | |
651 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 652 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
653 | false, // isolate_execinstr |
654 | 0, // rosegment_gap | |
8a5e3e08 ILT |
655 | elfcpp::SHN_UNDEF, // small_common_shndx |
656 | elfcpp::SHN_UNDEF, // large_common_shndx | |
657 | 0, // small_common_section_flags | |
05a352e6 DK |
658 | 0, // large_common_section_flags |
659 | NULL, // attributes_section | |
660 | NULL // attributes_vendor | |
42cacb20 DE |
661 | }; |
662 | ||
663 | template<> | |
664 | Target::Target_info Target_powerpc<64, false>::powerpc_info = | |
665 | { | |
666 | 64, // size | |
667 | false, // is_big_endian | |
668 | elfcpp::EM_PPC64, // machine_code | |
669 | false, // has_make_symbol | |
670 | false, // has_resolve | |
671 | false, // has_code_fill | |
672 | true, // is_default_stack_executable | |
b3ce541e | 673 | false, // can_icf_inline_merge_sections |
42cacb20 DE |
674 | '\0', // wrap_char |
675 | "/usr/lib/ld.so.1", // dynamic_linker | |
676 | 0x10000000, // default_text_segment_address | |
677 | 64 * 1024, // abi_pagesize (overridable by -z max-page-size) | |
dd93cd0a | 678 | 4 * 1024, // common_pagesize (overridable by -z common-page-size) |
c9269dff AM |
679 | false, // isolate_execinstr |
680 | 0, // rosegment_gap | |
8a5e3e08 ILT |
681 | elfcpp::SHN_UNDEF, // small_common_shndx |
682 | elfcpp::SHN_UNDEF, // large_common_shndx | |
683 | 0, // small_common_section_flags | |
05a352e6 DK |
684 | 0, // large_common_section_flags |
685 | NULL, // attributes_section | |
686 | NULL // attributes_vendor | |
42cacb20 DE |
687 | }; |
688 | ||
dd93cd0a AM |
689 | inline bool |
690 | is_branch_reloc(unsigned int r_type) | |
691 | { | |
692 | return (r_type == elfcpp::R_POWERPC_REL24 | |
693 | || r_type == elfcpp::R_PPC_PLTREL24 | |
694 | || r_type == elfcpp::R_PPC_LOCAL24PC | |
695 | || r_type == elfcpp::R_POWERPC_REL14 | |
696 | || r_type == elfcpp::R_POWERPC_REL14_BRTAKEN | |
697 | || r_type == elfcpp::R_POWERPC_REL14_BRNTAKEN | |
698 | || r_type == elfcpp::R_POWERPC_ADDR24 | |
699 | || r_type == elfcpp::R_POWERPC_ADDR14 | |
700 | || r_type == elfcpp::R_POWERPC_ADDR14_BRTAKEN | |
701 | || r_type == elfcpp::R_POWERPC_ADDR14_BRNTAKEN); | |
702 | } | |
703 | ||
704 | // If INSN is an opcode that may be used with an @tls operand, return | |
705 | // the transformed insn for TLS optimisation, otherwise return 0. If | |
706 | // REG is non-zero only match an insn with RB or RA equal to REG. | |
707 | uint32_t | |
708 | at_tls_transform(uint32_t insn, unsigned int reg) | |
709 | { | |
710 | if ((insn & (0x3f << 26)) != 31 << 26) | |
711 | return 0; | |
712 | ||
713 | unsigned int rtra; | |
714 | if (reg == 0 || ((insn >> 11) & 0x1f) == reg) | |
715 | rtra = insn & ((1 << 26) - (1 << 16)); | |
716 | else if (((insn >> 16) & 0x1f) == reg) | |
717 | rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5); | |
718 | else | |
719 | return 0; | |
720 | ||
721 | if ((insn & (0x3ff << 1)) == 266 << 1) | |
722 | // add -> addi | |
723 | insn = 14 << 26; | |
724 | else if ((insn & (0x1f << 1)) == 23 << 1 | |
725 | && ((insn & (0x1f << 6)) < 14 << 6 | |
726 | || ((insn & (0x1f << 6)) >= 16 << 6 | |
727 | && (insn & (0x1f << 6)) < 24 << 6))) | |
728 | // load and store indexed -> dform | |
729 | insn = (32 | ((insn >> 6) & 0x1f)) << 26; | |
730 | else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1) | |
731 | // ldx, ldux, stdx, stdux -> ld, ldu, std, stdu | |
732 | insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1); | |
733 | else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1) | |
734 | // lwax -> lwa | |
735 | insn = (58 << 26) | 2; | |
736 | else | |
737 | return 0; | |
738 | insn |= rtra; | |
739 | return insn; | |
740 | } | |
741 | ||
742 | // Modified version of symtab.h class Symbol member | |
743 | // Given a direct absolute or pc-relative static relocation against | |
744 | // the global symbol, this function returns whether a dynamic relocation | |
745 | // is needed. | |
746 | ||
747 | template<int size> | |
748 | bool | |
749 | needs_dynamic_reloc(const Symbol* gsym, int flags) | |
750 | { | |
751 | // No dynamic relocations in a static link! | |
752 | if (parameters->doing_static_link()) | |
753 | return false; | |
754 | ||
755 | // A reference to an undefined symbol from an executable should be | |
756 | // statically resolved to 0, and does not need a dynamic relocation. | |
757 | // This matches gnu ld behavior. | |
758 | if (gsym->is_undefined() && !parameters->options().shared()) | |
759 | return false; | |
760 | ||
761 | // A reference to an absolute symbol does not need a dynamic relocation. | |
762 | if (gsym->is_absolute()) | |
763 | return false; | |
764 | ||
765 | // An absolute reference within a position-independent output file | |
766 | // will need a dynamic relocation. | |
767 | if ((flags & Symbol::ABSOLUTE_REF) | |
768 | && parameters->options().output_is_position_independent()) | |
769 | return true; | |
770 | ||
771 | // A function call that can branch to a local PLT entry does not need | |
772 | // a dynamic relocation. | |
773 | if ((flags & Symbol::FUNCTION_CALL) && gsym->has_plt_offset()) | |
774 | return false; | |
775 | ||
776 | // A reference to any PLT entry in a non-position-independent executable | |
777 | // does not need a dynamic relocation. | |
778 | // Except due to having function descriptors on powerpc64 we don't define | |
779 | // functions to their plt code in an executable, so this doesn't apply. | |
780 | if (size == 32 | |
781 | && !parameters->options().output_is_position_independent() | |
782 | && gsym->has_plt_offset()) | |
783 | return false; | |
784 | ||
785 | // A reference to a symbol defined in a dynamic object or to a | |
786 | // symbol that is preemptible will need a dynamic relocation. | |
787 | if (gsym->is_from_dynobj() | |
788 | || gsym->is_undefined() | |
789 | || gsym->is_preemptible()) | |
790 | return true; | |
791 | ||
792 | // For all other cases, return FALSE. | |
793 | return false; | |
794 | } | |
795 | ||
796 | // Modified version of symtab.h class Symbol member | |
797 | // Whether we should use the PLT offset associated with a symbol for | |
798 | // a relocation. FLAGS is a set of Reference_flags. | |
799 | ||
800 | template<int size> | |
801 | bool | |
802 | use_plt_offset(const Symbol* gsym, int flags) | |
803 | { | |
804 | // If the symbol doesn't have a PLT offset, then naturally we | |
805 | // don't want to use it. | |
806 | if (!gsym->has_plt_offset()) | |
807 | return false; | |
808 | ||
809 | // For a STT_GNU_IFUNC symbol we always have to use the PLT entry. | |
810 | if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
811 | return true; | |
812 | ||
813 | // If we are going to generate a dynamic relocation, then we will | |
814 | // wind up using that, so no need to use the PLT entry. | |
815 | if (needs_dynamic_reloc<size>(gsym, flags)) | |
816 | return false; | |
817 | ||
818 | // If the symbol is from a dynamic object, we need to use the PLT | |
819 | // entry. | |
820 | if (gsym->is_from_dynobj()) | |
821 | return true; | |
822 | ||
823 | // If we are generating a shared object, and gsym symbol is | |
824 | // undefined or preemptible, we need to use the PLT entry. | |
825 | if (parameters->options().shared() | |
826 | && (gsym->is_undefined() || gsym->is_preemptible())) | |
827 | return true; | |
828 | ||
829 | // If gsym is a call to a weak undefined symbol, we need to use | |
830 | // the PLT entry; the symbol may be defined by a library loaded | |
831 | // at runtime. | |
832 | if ((flags & Symbol::FUNCTION_CALL) && gsym->is_weak_undefined()) | |
833 | return true; | |
834 | ||
835 | // Otherwise we can use the regular definition. | |
836 | return false; | |
837 | } | |
838 | ||
42cacb20 DE |
839 | template<int size, bool big_endian> |
840 | class Powerpc_relocate_functions | |
841 | { | |
dd93cd0a AM |
842 | public: |
843 | enum overflow_check | |
844 | { | |
845 | check_none, | |
846 | check_signed, | |
847 | check_bitfield | |
848 | }; | |
849 | ||
850 | enum overflow_status | |
851 | { | |
852 | status_ok, | |
853 | status_overflow | |
854 | }; | |
855 | ||
42cacb20 | 856 | private: |
c9269dff | 857 | typedef Powerpc_relocate_functions<size, big_endian> This; |
c9269dff AM |
858 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
859 | ||
dd93cd0a AM |
860 | template<int valsize> |
861 | static inline bool | |
862 | has_overflow_signed(Address value) | |
863 | { | |
864 | // limit = 1 << (valsize - 1) without shift count exceeding size of type | |
865 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
866 | limit <<= ((valsize - 1) >> 1); | |
867 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
868 | return value + limit > (limit << 1) - 1; | |
869 | } | |
870 | ||
871 | template<int valsize> | |
872 | static inline bool | |
873 | has_overflow_bitfield(Address value) | |
874 | { | |
875 | Address limit = static_cast<Address>(1) << ((valsize - 1) >> 1); | |
876 | limit <<= ((valsize - 1) >> 1); | |
877 | limit <<= ((valsize - 1) - 2 * ((valsize - 1) >> 1)); | |
878 | return value > (limit << 1) - 1 && value + limit > (limit << 1) - 1; | |
879 | } | |
880 | ||
881 | template<int valsize> | |
882 | static inline enum overflow_status | |
883 | overflowed(Address value, enum overflow_check overflow) | |
884 | { | |
885 | if (overflow == check_signed) | |
886 | { | |
887 | if (has_overflow_signed<valsize>(value)) | |
888 | return status_overflow; | |
889 | } | |
890 | else if (overflow == check_bitfield) | |
891 | { | |
892 | if (has_overflow_bitfield<valsize>(value)) | |
893 | return status_overflow; | |
894 | } | |
895 | return status_ok; | |
896 | } | |
897 | ||
cf43a2fe | 898 | // Do a simple RELA relocation |
42cacb20 | 899 | template<int valsize> |
dd93cd0a AM |
900 | static inline enum overflow_status |
901 | rela(unsigned char* view, Address value, enum overflow_check overflow) | |
902 | { | |
903 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
904 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
905 | elfcpp::Swap<valsize, big_endian>::writeval(wv, value); | |
906 | return overflowed<valsize>(value, overflow); | |
907 | } | |
908 | ||
909 | template<int valsize> | |
910 | static inline enum overflow_status | |
42cacb20 DE |
911 | rela(unsigned char* view, |
912 | unsigned int right_shift, | |
c9269dff AM |
913 | typename elfcpp::Valtype_base<valsize>::Valtype dst_mask, |
914 | Address value, | |
dd93cd0a | 915 | enum overflow_check overflow) |
42cacb20 DE |
916 | { |
917 | typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype; | |
918 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
919 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(wv); | |
dd93cd0a | 920 | Valtype reloc = value >> right_shift; |
42cacb20 DE |
921 | val &= ~dst_mask; |
922 | reloc &= dst_mask; | |
42cacb20 | 923 | elfcpp::Swap<valsize, big_endian>::writeval(wv, val | reloc); |
dd93cd0a | 924 | return overflowed<valsize>(value >> right_shift, overflow); |
42cacb20 DE |
925 | } |
926 | ||
cf43a2fe | 927 | // Do a simple RELA relocation, unaligned. |
42cacb20 | 928 | template<int valsize> |
dd93cd0a AM |
929 | static inline enum overflow_status |
930 | rela_ua(unsigned char* view, Address value, enum overflow_check overflow) | |
931 | { | |
932 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, value); | |
933 | return overflowed<valsize>(value, overflow); | |
934 | } | |
935 | ||
936 | template<int valsize> | |
937 | static inline enum overflow_status | |
cf43a2fe AM |
938 | rela_ua(unsigned char* view, |
939 | unsigned int right_shift, | |
c9269dff AM |
940 | typename elfcpp::Valtype_base<valsize>::Valtype dst_mask, |
941 | Address value, | |
dd93cd0a | 942 | enum overflow_check overflow) |
42cacb20 | 943 | { |
c9269dff AM |
944 | typedef typename elfcpp::Swap_unaligned<valsize, big_endian>::Valtype |
945 | Valtype; | |
dd93cd0a AM |
946 | Valtype val = elfcpp::Swap<valsize, big_endian>::readval(view); |
947 | Valtype reloc = value >> right_shift; | |
42cacb20 DE |
948 | val &= ~dst_mask; |
949 | reloc &= dst_mask; | |
dd93cd0a AM |
950 | elfcpp::Swap_unaligned<valsize, big_endian>::writeval(view, val | reloc); |
951 | return overflowed<valsize>(value >> right_shift, overflow); | |
42cacb20 DE |
952 | } |
953 | ||
42cacb20 | 954 | public: |
dd93cd0a | 955 | // R_PPC64_ADDR64: (Symbol + Addend) |
42cacb20 | 956 | static inline void |
dd93cd0a AM |
957 | addr64(unsigned char* view, Address value) |
958 | { This::template rela<64>(view, value, check_none); } | |
42cacb20 | 959 | |
dd93cd0a | 960 | // R_PPC64_UADDR64: (Symbol + Addend) unaligned |
42cacb20 | 961 | static inline void |
dd93cd0a AM |
962 | addr64_u(unsigned char* view, Address value) |
963 | { This::template rela_ua<64>(view, value, check_none); } | |
964 | ||
965 | // R_POWERPC_ADDR32: (Symbol + Addend) | |
966 | static inline enum overflow_status | |
967 | addr32(unsigned char* view, Address value, enum overflow_check overflow) | |
968 | { return This::template rela<32>(view, value, overflow); } | |
969 | ||
970 | // R_POWERPC_UADDR32: (Symbol + Addend) unaligned | |
971 | static inline enum overflow_status | |
972 | addr32_u(unsigned char* view, Address value, enum overflow_check overflow) | |
973 | { return This::template rela_ua<32>(view, value, overflow); } | |
974 | ||
975 | // R_POWERPC_ADDR24: (Symbol + Addend) & 0x3fffffc | |
976 | static inline enum overflow_status | |
977 | addr24(unsigned char* view, Address value, enum overflow_check overflow) | |
978 | { | |
979 | enum overflow_status stat | |
980 | = This::template rela<32>(view, 0, 0x03fffffc, value, overflow); | |
981 | if (overflow != check_none && (value & 3) != 0) | |
982 | stat = status_overflow; | |
983 | return stat; | |
984 | } | |
42cacb20 DE |
985 | |
986 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff | |
dd93cd0a AM |
987 | static inline enum overflow_status |
988 | addr16(unsigned char* view, Address value, enum overflow_check overflow) | |
989 | { return This::template rela<16>(view, value, overflow); } | |
42cacb20 | 990 | |
dd93cd0a AM |
991 | // R_POWERPC_ADDR16: (Symbol + Addend) & 0xffff, unaligned |
992 | static inline enum overflow_status | |
993 | addr16_u(unsigned char* view, Address value, enum overflow_check overflow) | |
994 | { return This::template rela_ua<16>(view, value, overflow); } | |
42cacb20 | 995 | |
dd93cd0a AM |
996 | // R_POWERPC_ADDR16_DS: (Symbol + Addend) & 0xfffc |
997 | static inline enum overflow_status | |
998 | addr16_ds(unsigned char* view, Address value, enum overflow_check overflow) | |
999 | { | |
1000 | enum overflow_status stat | |
1001 | = This::template rela<16>(view, 0, 0xfffc, value, overflow); | |
1002 | if (overflow != check_none && (value & 3) != 0) | |
1003 | stat = status_overflow; | |
1004 | return stat; | |
1005 | } | |
42cacb20 | 1006 | |
42cacb20 DE |
1007 | // R_POWERPC_ADDR16_HI: ((Symbol + Addend) >> 16) & 0xffff |
1008 | static inline void | |
dd93cd0a AM |
1009 | addr16_hi(unsigned char* view, Address value) |
1010 | { This::template rela<16>(view, 16, 0xffff, value, check_none); } | |
42cacb20 | 1011 | |
c9269dff | 1012 | // R_POWERPC_ADDR16_HA: ((Symbol + Addend + 0x8000) >> 16) & 0xffff |
42cacb20 | 1013 | static inline void |
dd93cd0a AM |
1014 | addr16_ha(unsigned char* view, Address value) |
1015 | { This::addr16_hi(view, value + 0x8000); } | |
42cacb20 | 1016 | |
dd93cd0a | 1017 | // R_POWERPC_ADDR16_HIGHER: ((Symbol + Addend) >> 32) & 0xffff |
42cacb20 | 1018 | static inline void |
dd93cd0a AM |
1019 | addr16_hi2(unsigned char* view, Address value) |
1020 | { This::template rela<16>(view, 32, 0xffff, value, check_none); } | |
42cacb20 | 1021 | |
dd93cd0a | 1022 | // R_POWERPC_ADDR16_HIGHERA: ((Symbol + Addend + 0x8000) >> 32) & 0xffff |
42cacb20 | 1023 | static inline void |
dd93cd0a AM |
1024 | addr16_ha2(unsigned char* view, Address value) |
1025 | { This::addr16_hi2(view, value + 0x8000); } | |
42cacb20 | 1026 | |
dd93cd0a | 1027 | // R_POWERPC_ADDR16_HIGHEST: ((Symbol + Addend) >> 48) & 0xffff |
42cacb20 | 1028 | static inline void |
dd93cd0a AM |
1029 | addr16_hi3(unsigned char* view, Address value) |
1030 | { This::template rela<16>(view, 48, 0xffff, value, check_none); } | |
42cacb20 | 1031 | |
dd93cd0a | 1032 | // R_POWERPC_ADDR16_HIGHESTA: ((Symbol + Addend + 0x8000) >> 48) & 0xffff |
42cacb20 | 1033 | static inline void |
dd93cd0a AM |
1034 | addr16_ha3(unsigned char* view, Address value) |
1035 | { This::addr16_hi3(view, value + 0x8000); } | |
1036 | ||
1037 | // R_POWERPC_ADDR14: (Symbol + Addend) & 0xfffc | |
1038 | static inline enum overflow_status | |
1039 | addr14(unsigned char* view, Address value, enum overflow_check overflow) | |
1040 | { | |
1041 | enum overflow_status stat | |
1042 | = This::template rela<32>(view, 0, 0xfffc, value, overflow); | |
1043 | if (overflow != check_none && (value & 3) != 0) | |
1044 | stat = status_overflow; | |
1045 | return stat; | |
1046 | } | |
cf43a2fe AM |
1047 | }; |
1048 | ||
c9269dff AM |
1049 | // Stash away the index of .got2 or .opd in a relocatable object, if |
1050 | // such a section exists. | |
cf43a2fe AM |
1051 | |
1052 | template<int size, bool big_endian> | |
1053 | bool | |
1054 | Powerpc_relobj<size, big_endian>::do_find_special_sections( | |
1055 | Read_symbols_data* sd) | |
1056 | { | |
c9269dff AM |
1057 | const unsigned char* const pshdrs = sd->section_headers->data(); |
1058 | const unsigned char* namesu = sd->section_names->data(); | |
1059 | const char* names = reinterpret_cast<const char*>(namesu); | |
1060 | section_size_type names_size = sd->section_names_size; | |
1061 | const unsigned char* s; | |
1062 | ||
1063 | s = this->find_shdr(pshdrs, size == 32 ? ".got2" : ".opd", | |
1064 | names, names_size, NULL); | |
1065 | if (s != NULL) | |
1066 | { | |
1067 | unsigned int ndx = (s - pshdrs) / elfcpp::Elf_sizes<size>::shdr_size; | |
1068 | this->special_ = ndx; | |
1069 | } | |
1070 | return Sized_relobj_file<size, big_endian>::do_find_special_sections(sd); | |
1071 | } | |
1072 | ||
1073 | // Examine .rela.opd to build info about function entry points. | |
1074 | ||
1075 | template<int size, bool big_endian> | |
1076 | void | |
1077 | Powerpc_relobj<size, big_endian>::scan_opd_relocs( | |
1078 | size_t reloc_count, | |
1079 | const unsigned char* prelocs, | |
1080 | const unsigned char* plocal_syms) | |
1081 | { | |
1082 | if (size == 64) | |
cf43a2fe | 1083 | { |
c9269dff AM |
1084 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
1085 | Reltype; | |
1086 | const int reloc_size | |
1087 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
1088 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; | |
1089 | ||
1090 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
cf43a2fe | 1091 | { |
c9269dff AM |
1092 | Reltype reloc(prelocs); |
1093 | typename elfcpp::Elf_types<size>::Elf_WXword r_info | |
1094 | = reloc.get_r_info(); | |
1095 | unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
1096 | if (r_type == elfcpp::R_PPC64_ADDR64) | |
1097 | { | |
1098 | unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
1099 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
1100 | bool is_ordinary; | |
1101 | unsigned int shndx; | |
1102 | if (r_sym < this->local_symbol_count()) | |
1103 | { | |
1104 | typename elfcpp::Sym<size, big_endian> | |
1105 | lsym(plocal_syms + r_sym * sym_size); | |
1106 | shndx = lsym.get_st_shndx(); | |
1107 | shndx = this->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
1108 | value = lsym.get_st_value(); | |
1109 | } | |
1110 | else | |
1111 | shndx = this->symbol_section_and_value(r_sym, &value, | |
1112 | &is_ordinary); | |
1113 | this->set_opd_ent(reloc.get_r_offset(), shndx, | |
1114 | value + reloc.get_r_addend()); | |
1115 | } | |
1116 | } | |
1117 | } | |
1118 | } | |
1119 | ||
1120 | template<int size, bool big_endian> | |
1121 | void | |
1122 | Powerpc_relobj<size, big_endian>::do_read_relocs(Read_relocs_data* rd) | |
1123 | { | |
1124 | Sized_relobj_file<size, big_endian>::do_read_relocs(rd); | |
1125 | if (size == 64) | |
1126 | { | |
1127 | for (Read_relocs_data::Relocs_list::iterator p = rd->relocs.begin(); | |
1128 | p != rd->relocs.end(); | |
1129 | ++p) | |
1130 | { | |
1131 | if (p->data_shndx == this->opd_shndx()) | |
1132 | { | |
1133 | this->init_opd(this->section_size(this->opd_shndx())); | |
1134 | this->scan_opd_relocs(p->reloc_count, p->contents->data(), | |
1135 | rd->local_symbols->data()); | |
1136 | break; | |
1137 | } | |
cf43a2fe AM |
1138 | } |
1139 | } | |
cf43a2fe AM |
1140 | } |
1141 | ||
1142 | // Set up PowerPC target specific relobj. | |
1143 | ||
1144 | template<int size, bool big_endian> | |
1145 | Object* | |
1146 | Target_powerpc<size, big_endian>::do_make_elf_object( | |
1147 | const std::string& name, | |
1148 | Input_file* input_file, | |
1149 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
1150 | { | |
1151 | int et = ehdr.get_e_type(); | |
957564c9 AS |
1152 | // ET_EXEC files are valid input for --just-symbols/-R, |
1153 | // and we treat them as relocatable objects. | |
1154 | if (et == elfcpp::ET_REL | |
1155 | || (et == elfcpp::ET_EXEC && input_file->just_symbols())) | |
cf43a2fe AM |
1156 | { |
1157 | Powerpc_relobj<size, big_endian>* obj = | |
c9269dff | 1158 | new Powerpc_relobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
1159 | obj->setup(); |
1160 | return obj; | |
1161 | } | |
1162 | else if (et == elfcpp::ET_DYN) | |
1163 | { | |
1164 | Sized_dynobj<size, big_endian>* obj = | |
c9269dff | 1165 | new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr); |
cf43a2fe AM |
1166 | obj->setup(); |
1167 | return obj; | |
1168 | } | |
1169 | else | |
1170 | { | |
c9269dff | 1171 | gold_error(_("%s: unsupported ELF file type %d"), name.c_str(), et); |
cf43a2fe AM |
1172 | return NULL; |
1173 | } | |
1174 | } | |
1175 | ||
1176 | template<int size, bool big_endian> | |
1177 | class Output_data_got_powerpc : public Output_data_got<size, big_endian> | |
1178 | { | |
1179 | public: | |
1180 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Valtype; | |
1181 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, size, big_endian> Rela_dyn; | |
1182 | ||
1183 | Output_data_got_powerpc(Symbol_table* symtab, Layout* layout) | |
1184 | : Output_data_got<size, big_endian>(), | |
1185 | symtab_(symtab), layout_(layout), | |
1186 | header_ent_cnt_(size == 32 ? 3 : 1), | |
1187 | header_index_(size == 32 ? 0x2000 : 0) | |
1188 | {} | |
1189 | ||
1190 | class Got_entry; | |
1191 | ||
1192 | // Create a new GOT entry and return its offset. | |
1193 | unsigned int | |
1194 | add_got_entry(Got_entry got_entry) | |
42cacb20 | 1195 | { |
cf43a2fe AM |
1196 | this->reserve_ent(); |
1197 | return Output_data_got<size, big_endian>::add_got_entry(got_entry); | |
1198 | } | |
42cacb20 | 1199 | |
cf43a2fe AM |
1200 | // Create a pair of new GOT entries and return the offset of the first. |
1201 | unsigned int | |
1202 | add_got_entry_pair(Got_entry got_entry_1, Got_entry got_entry_2) | |
1203 | { | |
1204 | this->reserve_ent(2); | |
1205 | return Output_data_got<size, big_endian>::add_got_entry_pair(got_entry_1, | |
1206 | got_entry_2); | |
1207 | } | |
42cacb20 | 1208 | |
dd93cd0a AM |
1209 | unsigned int |
1210 | add_constant_pair(Valtype c1, Valtype c2) | |
1211 | { | |
1212 | this->reserve_ent(2); | |
1213 | unsigned int got_offset = this->add_constant(c1); | |
1214 | this->add_constant(c2); | |
1215 | return got_offset; | |
1216 | } | |
1217 | ||
1218 | // Offset of _GLOBAL_OFFSET_TABLE_. | |
cf43a2fe AM |
1219 | unsigned int |
1220 | g_o_t() const | |
1221 | { | |
1222 | return this->got_offset(this->header_index_); | |
42cacb20 | 1223 | } |
cf43a2fe | 1224 | |
dd93cd0a AM |
1225 | // Offset of base used to access the GOT/TOC. |
1226 | // The got/toc pointer reg will be set to this value. | |
1227 | typename elfcpp::Elf_types<size>::Elf_Off | |
1228 | got_base_offset(const Powerpc_relobj<size, big_endian>* object) const | |
1229 | { | |
1230 | if (size == 32) | |
1231 | return this->g_o_t(); | |
1232 | else | |
1233 | return (this->output_section()->address() | |
1234 | + object->toc_base_offset() | |
1235 | - this->address()); | |
1236 | } | |
1237 | ||
cf43a2fe AM |
1238 | // Ensure our GOT has a header. |
1239 | void | |
1240 | set_final_data_size() | |
1241 | { | |
1242 | if (this->header_ent_cnt_ != 0) | |
1243 | this->make_header(); | |
1244 | Output_data_got<size, big_endian>::set_final_data_size(); | |
1245 | } | |
1246 | ||
1247 | // First word of GOT header needs some values that are not | |
1248 | // handled by Output_data_got so poke them in here. | |
1249 | // For 32-bit, address of .dynamic, for 64-bit, address of TOCbase. | |
1250 | void | |
1251 | do_write(Output_file* of) | |
1252 | { | |
6ce78956 AM |
1253 | this->replace_constant(this->header_index_, |
1254 | (size == 32 | |
1255 | ? this->layout_->dynamic_section()->address() | |
dd93cd0a | 1256 | : this->output_section()->address() + 0x8000)); |
cf43a2fe AM |
1257 | |
1258 | Output_data_got<size, big_endian>::do_write(of); | |
1259 | } | |
1260 | ||
1261 | private: | |
1262 | void | |
1263 | reserve_ent(unsigned int cnt = 1) | |
1264 | { | |
1265 | if (this->header_ent_cnt_ == 0) | |
1266 | return; | |
1267 | if (this->num_entries() + cnt > this->header_index_) | |
1268 | this->make_header(); | |
1269 | } | |
1270 | ||
1271 | void | |
1272 | make_header() | |
1273 | { | |
1274 | this->header_ent_cnt_ = 0; | |
1275 | this->header_index_ = this->num_entries(); | |
1276 | if (size == 32) | |
1277 | { | |
1278 | Output_data_got<size, big_endian>::add_constant(0); | |
1279 | Output_data_got<size, big_endian>::add_constant(0); | |
1280 | Output_data_got<size, big_endian>::add_constant(0); | |
1281 | ||
1282 | // Define _GLOBAL_OFFSET_TABLE_ at the header | |
1283 | this->symtab_->define_in_output_data("_GLOBAL_OFFSET_TABLE_", NULL, | |
1284 | Symbol_table::PREDEFINED, | |
1285 | this, this->g_o_t(), 0, | |
1286 | elfcpp::STT_OBJECT, | |
1287 | elfcpp::STB_LOCAL, | |
1288 | elfcpp::STV_HIDDEN, | |
1289 | 0, false, false); | |
1290 | } | |
1291 | else | |
1292 | Output_data_got<size, big_endian>::add_constant(0); | |
1293 | } | |
1294 | ||
1295 | // Stashed pointers. | |
1296 | Symbol_table* symtab_; | |
1297 | Layout* layout_; | |
1298 | ||
1299 | // GOT header size. | |
1300 | unsigned int header_ent_cnt_; | |
1301 | // GOT header index. | |
1302 | unsigned int header_index_; | |
42cacb20 DE |
1303 | }; |
1304 | ||
1305 | // Get the GOT section, creating it if necessary. | |
1306 | ||
1307 | template<int size, bool big_endian> | |
cf43a2fe | 1308 | Output_data_got_powerpc<size, big_endian>* |
42cacb20 DE |
1309 | Target_powerpc<size, big_endian>::got_section(Symbol_table* symtab, |
1310 | Layout* layout) | |
1311 | { | |
1312 | if (this->got_ == NULL) | |
1313 | { | |
1314 | gold_assert(symtab != NULL && layout != NULL); | |
1315 | ||
cf43a2fe AM |
1316 | this->got_ |
1317 | = new Output_data_got_powerpc<size, big_endian>(symtab, layout); | |
42cacb20 DE |
1318 | |
1319 | layout->add_output_section_data(".got", elfcpp::SHT_PROGBITS, | |
1320 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
22f0da72 | 1321 | this->got_, ORDER_DATA, false); |
42cacb20 DE |
1322 | } |
1323 | ||
1324 | return this->got_; | |
1325 | } | |
1326 | ||
1327 | // Get the dynamic reloc section, creating it if necessary. | |
1328 | ||
1329 | template<int size, bool big_endian> | |
1330 | typename Target_powerpc<size, big_endian>::Reloc_section* | |
1331 | Target_powerpc<size, big_endian>::rela_dyn_section(Layout* layout) | |
1332 | { | |
1333 | if (this->rela_dyn_ == NULL) | |
1334 | { | |
1335 | gold_assert(layout != NULL); | |
1336 | this->rela_dyn_ = new Reloc_section(parameters->options().combreloc()); | |
1337 | layout->add_output_section_data(".rela.dyn", elfcpp::SHT_RELA, | |
22f0da72 ILT |
1338 | elfcpp::SHF_ALLOC, this->rela_dyn_, |
1339 | ORDER_DYNAMIC_RELOCS, false); | |
42cacb20 DE |
1340 | } |
1341 | return this->rela_dyn_; | |
1342 | } | |
1343 | ||
1344 | // A class to handle the PLT data. | |
1345 | ||
1346 | template<int size, bool big_endian> | |
cf43a2fe | 1347 | class Output_data_plt_powerpc : public Output_section_data_build |
42cacb20 DE |
1348 | { |
1349 | public: | |
1350 | typedef Output_data_reloc<elfcpp::SHT_RELA, true, | |
1351 | size, big_endian> Reloc_section; | |
1352 | ||
cf43a2fe | 1353 | Output_data_plt_powerpc(Layout*, Target_powerpc<size, big_endian>*); |
42cacb20 DE |
1354 | |
1355 | // Add an entry to the PLT. | |
cf43a2fe AM |
1356 | void |
1357 | add_entry(Symbol*); | |
42cacb20 DE |
1358 | |
1359 | // Return the .rela.plt section data. | |
cf43a2fe AM |
1360 | const Reloc_section* |
1361 | rel_plt() const | |
1362 | { | |
42cacb20 DE |
1363 | return this->rel_; |
1364 | } | |
1365 | ||
0e70b911 CC |
1366 | // Return the number of PLT entries. |
1367 | unsigned int | |
1368 | entry_count() const | |
d83ce4e3 AM |
1369 | { |
1370 | return ((this->current_data_size() - initial_plt_entry_size) | |
1371 | / plt_entry_size); | |
1372 | } | |
0e70b911 CC |
1373 | |
1374 | // Return the offset of the first non-reserved PLT entry. | |
1375 | static unsigned int | |
1376 | first_plt_entry_offset() | |
cf43a2fe | 1377 | { return initial_plt_entry_size; } |
0e70b911 CC |
1378 | |
1379 | // Return the size of a PLT entry. | |
1380 | static unsigned int | |
1381 | get_plt_entry_size() | |
cf43a2fe | 1382 | { return plt_entry_size; } |
0e70b911 | 1383 | |
42cacb20 | 1384 | protected: |
42cacb20 | 1385 | void |
cf43a2fe | 1386 | do_adjust_output_section(Output_section* os) |
42cacb20 | 1387 | { |
cf43a2fe | 1388 | os->set_entsize(0); |
42cacb20 DE |
1389 | } |
1390 | ||
6ce78956 AM |
1391 | // Write to a map file. |
1392 | void | |
1393 | do_print_to_mapfile(Mapfile* mapfile) const | |
1394 | { mapfile->print_output_data(this, _("** PLT")); } | |
1395 | ||
cf43a2fe AM |
1396 | private: |
1397 | // The size of an entry in the PLT. | |
1398 | static const int plt_entry_size = size == 32 ? 4 : 24; | |
1399 | // The size of the first reserved entry. | |
1400 | static const int initial_plt_entry_size = size == 32 ? 0 : 24; | |
1401 | ||
42cacb20 DE |
1402 | // Write out the PLT data. |
1403 | void | |
1404 | do_write(Output_file*); | |
1405 | ||
1406 | // The reloc section. | |
1407 | Reloc_section* rel_; | |
cf43a2fe AM |
1408 | // Allows access to .glink for do_write. |
1409 | Target_powerpc<size, big_endian>* targ_; | |
42cacb20 DE |
1410 | }; |
1411 | ||
cf43a2fe | 1412 | // Create the PLT section. |
42cacb20 DE |
1413 | |
1414 | template<int size, bool big_endian> | |
d83ce4e3 AM |
1415 | Output_data_plt_powerpc<size, big_endian>::Output_data_plt_powerpc( |
1416 | Layout* layout, | |
1417 | Target_powerpc<size, big_endian>* targ) | |
cf43a2fe AM |
1418 | : Output_section_data_build(size == 32 ? 4 : 8), |
1419 | targ_(targ) | |
42cacb20 DE |
1420 | { |
1421 | this->rel_ = new Reloc_section(false); | |
1422 | layout->add_output_section_data(".rela.plt", elfcpp::SHT_RELA, | |
22f0da72 ILT |
1423 | elfcpp::SHF_ALLOC, this->rel_, |
1424 | ORDER_DYNAMIC_PLT_RELOCS, false); | |
42cacb20 DE |
1425 | } |
1426 | ||
42cacb20 DE |
1427 | // Add an entry to the PLT. |
1428 | ||
1429 | template<int size, bool big_endian> | |
1430 | void | |
1431 | Output_data_plt_powerpc<size, big_endian>::add_entry(Symbol* gsym) | |
1432 | { | |
cf43a2fe AM |
1433 | if (!gsym->has_plt_offset()) |
1434 | { | |
1435 | off_t off = this->current_data_size(); | |
1436 | ||
1437 | if (off == 0) | |
1438 | off += initial_plt_entry_size; | |
1439 | gsym->set_plt_offset(off); | |
1440 | gsym->set_needs_dynsym_entry(); | |
1441 | this->rel_->add_global(gsym, elfcpp::R_POWERPC_JMP_SLOT, this, off, 0); | |
1442 | off += plt_entry_size; | |
1443 | this->set_current_data_size(off); | |
1444 | } | |
42cacb20 DE |
1445 | } |
1446 | ||
dd93cd0a AM |
1447 | static const uint32_t add_0_11_11 = 0x7c0b5a14; |
1448 | static const uint32_t add_3_3_2 = 0x7c631214; | |
1449 | static const uint32_t add_3_3_13 = 0x7c636a14; | |
1450 | static const uint32_t add_11_0_11 = 0x7d605a14; | |
1451 | static const uint32_t add_12_2_11 = 0x7d825a14; | |
1452 | static const uint32_t addi_11_11 = 0x396b0000; | |
1453 | static const uint32_t addi_12_12 = 0x398c0000; | |
1454 | static const uint32_t addi_2_2 = 0x38420000; | |
1455 | static const uint32_t addi_3_2 = 0x38620000; | |
1456 | static const uint32_t addi_3_3 = 0x38630000; | |
1457 | static const uint32_t addis_0_2 = 0x3c020000; | |
1458 | static const uint32_t addis_0_13 = 0x3c0d0000; | |
c9269dff AM |
1459 | static const uint32_t addis_11_11 = 0x3d6b0000; |
1460 | static const uint32_t addis_11_30 = 0x3d7e0000; | |
1461 | static const uint32_t addis_12_12 = 0x3d8c0000; | |
dd93cd0a AM |
1462 | static const uint32_t addis_12_2 = 0x3d820000; |
1463 | static const uint32_t addis_3_2 = 0x3c620000; | |
1464 | static const uint32_t addis_3_13 = 0x3c6d0000; | |
c9269dff AM |
1465 | static const uint32_t b = 0x48000000; |
1466 | static const uint32_t bcl_20_31 = 0x429f0005; | |
1467 | static const uint32_t bctr = 0x4e800420; | |
1468 | static const uint32_t blrl = 0x4e800021; | |
dd93cd0a AM |
1469 | static const uint32_t cror_15_15_15 = 0x4def7b82; |
1470 | static const uint32_t cror_31_31_31 = 0x4ffffb82; | |
1471 | static const uint32_t ld_11_12 = 0xe96c0000; | |
1472 | static const uint32_t ld_11_2 = 0xe9620000; | |
1473 | static const uint32_t ld_2_1 = 0xe8410000; | |
1474 | static const uint32_t ld_2_11 = 0xe84b0000; | |
1475 | static const uint32_t ld_2_12 = 0xe84c0000; | |
1476 | static const uint32_t ld_2_2 = 0xe8420000; | |
1477 | static const uint32_t li_0_0 = 0x38000000; | |
1478 | static const uint32_t lis_0_0 = 0x3c000000; | |
c9269dff AM |
1479 | static const uint32_t lis_11 = 0x3d600000; |
1480 | static const uint32_t lis_12 = 0x3d800000; | |
c9269dff AM |
1481 | static const uint32_t lwz_0_12 = 0x800c0000; |
1482 | static const uint32_t lwz_11_11 = 0x816b0000; | |
1483 | static const uint32_t lwz_11_30 = 0x817e0000; | |
1484 | static const uint32_t lwz_12_12 = 0x818c0000; | |
dd93cd0a | 1485 | static const uint32_t lwzu_0_12 = 0x840c0000; |
c9269dff | 1486 | static const uint32_t mflr_0 = 0x7c0802a6; |
dd93cd0a | 1487 | static const uint32_t mflr_11 = 0x7d6802a6; |
c9269dff AM |
1488 | static const uint32_t mflr_12 = 0x7d8802a6; |
1489 | static const uint32_t mtctr_0 = 0x7c0903a6; | |
1490 | static const uint32_t mtctr_11 = 0x7d6903a6; | |
1491 | static const uint32_t mtlr_0 = 0x7c0803a6; | |
c9269dff | 1492 | static const uint32_t mtlr_12 = 0x7d8803a6; |
dd93cd0a | 1493 | static const uint32_t nop = 0x60000000; |
c9269dff | 1494 | static const uint32_t ori_0_0_0 = 0x60000000; |
dd93cd0a AM |
1495 | static const uint32_t std_2_1 = 0xf8410000; |
1496 | static const uint32_t sub_11_11_12 = 0x7d6c5850; | |
42cacb20 DE |
1497 | |
1498 | // Write out the PLT. | |
1499 | ||
1500 | template<int size, bool big_endian> | |
1501 | void | |
1502 | Output_data_plt_powerpc<size, big_endian>::do_write(Output_file* of) | |
1503 | { | |
cf43a2fe AM |
1504 | if (size == 32) |
1505 | { | |
1506 | const off_t offset = this->offset(); | |
1507 | const section_size_type oview_size | |
1508 | = convert_to_section_size_type(this->data_size()); | |
1509 | unsigned char* const oview = of->get_output_view(offset, oview_size); | |
1510 | unsigned char* pov = oview; | |
1511 | unsigned char* endpov = oview + oview_size; | |
1512 | ||
1513 | // The address the .glink branch table | |
1514 | const Output_data_glink<size, big_endian>* glink | |
1515 | = this->targ_->glink_section(); | |
1516 | elfcpp::Elf_types<32>::Elf_Addr branch_tab | |
1517 | = glink->address() + glink->pltresolve(); | |
1518 | ||
1519 | while (pov < endpov) | |
1520 | { | |
1521 | elfcpp::Swap<32, big_endian>::writeval(pov, branch_tab); | |
1522 | pov += 4; | |
1523 | branch_tab += 4; | |
1524 | } | |
1525 | ||
1526 | of->write_output_view(offset, oview_size, oview); | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | // Create the PLT section. | |
1531 | ||
1532 | template<int size, bool big_endian> | |
1533 | void | |
1534 | Target_powerpc<size, big_endian>::make_plt_section(Layout* layout) | |
1535 | { | |
1536 | if (this->plt_ == NULL) | |
1537 | { | |
1538 | if (this->glink_ == NULL) | |
1539 | make_glink_section(layout); | |
1540 | ||
1541 | // Ensure that .rela.dyn always appears before .rela.plt This is | |
1542 | // necessary due to how, on PowerPC and some other targets, .rela.dyn | |
1543 | // needs to include .rela.plt in it's range. | |
1544 | this->rela_dyn_section(layout); | |
1545 | ||
1546 | this->plt_ = new Output_data_plt_powerpc<size, big_endian>(layout, this); | |
1547 | layout->add_output_section_data(".plt", | |
1548 | (size == 32 | |
1549 | ? elfcpp::SHT_PROGBITS | |
1550 | : elfcpp::SHT_NOBITS), | |
1551 | elfcpp::SHF_ALLOC | elfcpp::SHF_WRITE, | |
1552 | this->plt_, | |
1553 | (size == 32 | |
1554 | ? ORDER_SMALL_DATA | |
1555 | : ORDER_SMALL_BSS), | |
1556 | false); | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | // A class to handle .glink. | |
1561 | ||
1562 | template<int size, bool big_endian> | |
1563 | class Output_data_glink : public Output_section_data | |
1564 | { | |
1565 | public: | |
c9269dff AM |
1566 | static const int pltresolve_size = 16*4; |
1567 | ||
cf43a2fe AM |
1568 | Output_data_glink(Target_powerpc<size, big_endian>*); |
1569 | ||
1570 | // Add an entry | |
1571 | void | |
1572 | add_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&, | |
d1a8cabd | 1573 | const Sized_relobj<size, big_endian>*); |
cf43a2fe AM |
1574 | |
1575 | unsigned int | |
1576 | find_entry(const Symbol*, const elfcpp::Rela<size, big_endian>&, | |
d1a8cabd | 1577 | const Sized_relobj<size, big_endian>*) const; |
cf43a2fe AM |
1578 | |
1579 | unsigned int | |
1580 | glink_entry_size() const | |
1581 | { | |
1582 | if (size == 32) | |
1583 | return 4 * 4; | |
1584 | else | |
1585 | // FIXME: We should be using multiple glink sections for | |
1586 | // stubs to support > 33M applications. | |
1587 | return 8 * 4; | |
1588 | } | |
1589 | ||
1590 | off_t | |
1591 | pltresolve() const | |
1592 | { | |
1593 | return this->pltresolve_; | |
1594 | } | |
1595 | ||
6ce78956 AM |
1596 | protected: |
1597 | // Write to a map file. | |
1598 | void | |
1599 | do_print_to_mapfile(Mapfile* mapfile) const | |
1600 | { mapfile->print_output_data(this, _("** glink")); } | |
1601 | ||
cf43a2fe | 1602 | private: |
cf43a2fe AM |
1603 | void |
1604 | set_final_data_size(); | |
1605 | ||
1606 | // Write out .glink | |
1607 | void | |
1608 | do_write(Output_file*); | |
1609 | ||
d1a8cabd | 1610 | class Glink_sym_ent |
cf43a2fe | 1611 | { |
d1a8cabd AM |
1612 | public: |
1613 | Glink_sym_ent(const Symbol* sym, | |
cf43a2fe | 1614 | const elfcpp::Rela<size, big_endian>& reloc, |
d1a8cabd | 1615 | const Sized_relobj<size, big_endian>* object) |
c9269dff | 1616 | : sym_(sym), addend_(0), object_(0) |
cf43a2fe AM |
1617 | { |
1618 | if (size != 32) | |
1619 | this->addend_ = reloc.get_r_addend(); | |
d1a8cabd AM |
1620 | else if (parameters->options().output_is_position_independent() |
1621 | && (elfcpp::elf_r_type<size>(reloc.get_r_info()) | |
1622 | == elfcpp::R_PPC_PLTREL24)) | |
cf43a2fe | 1623 | { |
d1a8cabd | 1624 | this->addend_ = reloc.get_r_addend(); |
cf43a2fe | 1625 | if (this->addend_ != 0) |
d1a8cabd | 1626 | this->object_ = object; |
cf43a2fe AM |
1627 | } |
1628 | } | |
1629 | ||
cf43a2fe AM |
1630 | bool operator==(const Glink_sym_ent& that) const |
1631 | { | |
1632 | return (this->sym_ == that.sym_ | |
1633 | && this->object_ == that.object_ | |
d1a8cabd | 1634 | && this->addend_ == that.addend_); |
cf43a2fe | 1635 | } |
c9269dff AM |
1636 | |
1637 | const Symbol* sym_; | |
1638 | unsigned int addend_; | |
1639 | const Sized_relobj<size, big_endian>* object_; | |
cf43a2fe AM |
1640 | }; |
1641 | ||
d1a8cabd | 1642 | class Glink_sym_ent_hash |
cf43a2fe | 1643 | { |
d1a8cabd | 1644 | public: |
cf43a2fe AM |
1645 | size_t operator()(const Glink_sym_ent& ent) const |
1646 | { | |
1647 | return (reinterpret_cast<uintptr_t>(ent.sym_) | |
1648 | ^ reinterpret_cast<uintptr_t>(ent.object_) | |
cf43a2fe AM |
1649 | ^ ent.addend_); |
1650 | } | |
1651 | }; | |
1652 | ||
d1a8cabd | 1653 | // Map sym/object/addend to index. |
cf43a2fe AM |
1654 | typedef Unordered_map<Glink_sym_ent, unsigned int, |
1655 | Glink_sym_ent_hash> Glink_entries; | |
1656 | Glink_entries glink_entries_; | |
1657 | ||
1658 | // Offset of pltresolve stub (actually, branch table for 32-bit) | |
1659 | off_t pltresolve_; | |
1660 | ||
1661 | // Allows access to .got and .plt for do_write. | |
1662 | Target_powerpc<size, big_endian>* targ_; | |
1663 | }; | |
1664 | ||
1665 | // Create the glink section. | |
1666 | ||
1667 | template<int size, bool big_endian> | |
d83ce4e3 AM |
1668 | Output_data_glink<size, big_endian>::Output_data_glink( |
1669 | Target_powerpc<size, big_endian>* targ) | |
cf43a2fe AM |
1670 | : Output_section_data(16), |
1671 | pltresolve_(0), targ_(targ) | |
1672 | { | |
1673 | } | |
1674 | ||
1675 | // Add an entry to glink, if we do not already have one for this | |
d1a8cabd | 1676 | // sym/object/addend combo. |
cf43a2fe AM |
1677 | |
1678 | template<int size, bool big_endian> | |
1679 | void | |
d83ce4e3 AM |
1680 | Output_data_glink<size, big_endian>::add_entry( |
1681 | const Symbol* gsym, | |
1682 | const elfcpp::Rela<size, big_endian>& reloc, | |
d1a8cabd | 1683 | const Sized_relobj<size, big_endian>* object) |
cf43a2fe | 1684 | { |
d1a8cabd | 1685 | Glink_sym_ent ent(gsym, reloc, object); |
cf43a2fe | 1686 | unsigned int indx = this->glink_entries_.size(); |
d83ce4e3 | 1687 | this->glink_entries_.insert(std::make_pair(ent, indx)); |
cf43a2fe AM |
1688 | } |
1689 | ||
1690 | template<int size, bool big_endian> | |
1691 | unsigned int | |
d83ce4e3 AM |
1692 | Output_data_glink<size, big_endian>::find_entry( |
1693 | const Symbol* gsym, | |
1694 | const elfcpp::Rela<size, big_endian>& reloc, | |
d1a8cabd | 1695 | const Sized_relobj<size, big_endian>* object) const |
cf43a2fe | 1696 | { |
d1a8cabd | 1697 | Glink_sym_ent ent(gsym, reloc, object); |
cf43a2fe AM |
1698 | typename Glink_entries::const_iterator p = this->glink_entries_.find(ent); |
1699 | gold_assert(p != this->glink_entries_.end()); | |
1700 | return p->second; | |
1701 | } | |
1702 | ||
1703 | template<int size, bool big_endian> | |
1704 | void | |
1705 | Output_data_glink<size, big_endian>::set_final_data_size() | |
1706 | { | |
1707 | unsigned int count = this->glink_entries_.size(); | |
1708 | off_t total = count; | |
1709 | ||
1710 | if (count != 0) | |
1711 | { | |
1712 | if (size == 32) | |
1713 | { | |
1714 | total *= 16; | |
1715 | this->pltresolve_ = total; | |
1716 | ||
1717 | // space for branch table | |
1718 | total += 4 * (count - 1); | |
1719 | ||
1720 | total += -total & 15; | |
1721 | total += this->pltresolve_size; | |
1722 | } | |
1723 | else | |
1724 | { | |
1725 | total *= 32; | |
1726 | this->pltresolve_ = total; | |
1727 | total += this->pltresolve_size; | |
1728 | ||
1729 | // space for branch table | |
1730 | total += 8 * count; | |
1731 | if (count > 0x8000) | |
1732 | total += 4 * (count - 0x8000); | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | this->set_data_size(total); | |
1737 | } | |
1738 | ||
1739 | static inline uint32_t | |
1740 | l(uint32_t a) | |
1741 | { | |
1742 | return a & 0xffff; | |
1743 | } | |
1744 | ||
1745 | static inline uint32_t | |
1746 | hi(uint32_t a) | |
1747 | { | |
1748 | return l(a >> 16); | |
1749 | } | |
1750 | ||
1751 | static inline uint32_t | |
1752 | ha(uint32_t a) | |
1753 | { | |
1754 | return hi(a + 0x8000); | |
1755 | } | |
1756 | ||
1757 | template<bool big_endian> | |
1758 | static inline void | |
c9269dff | 1759 | write_insn(unsigned char* p, uint32_t v) |
cf43a2fe AM |
1760 | { |
1761 | elfcpp::Swap<32, big_endian>::writeval(p, v); | |
1762 | } | |
1763 | ||
1764 | // Write out .glink. | |
1765 | ||
1766 | template<int size, bool big_endian> | |
1767 | void | |
1768 | Output_data_glink<size, big_endian>::do_write(Output_file* of) | |
1769 | { | |
1770 | const off_t off = this->offset(); | |
42cacb20 DE |
1771 | const section_size_type oview_size = |
1772 | convert_to_section_size_type(this->data_size()); | |
cf43a2fe | 1773 | unsigned char* const oview = of->get_output_view(off, oview_size); |
c9269dff | 1774 | unsigned char* p; |
42cacb20 | 1775 | |
cf43a2fe | 1776 | // The base address of the .plt section. |
dd93cd0a AM |
1777 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
1778 | Address plt_base = this->targ_->plt_section()->address(); | |
cf43a2fe | 1779 | |
dd93cd0a AM |
1780 | const Output_data_got_powerpc<size, big_endian>* got |
1781 | = this->targ_->got_section(); | |
cf43a2fe AM |
1782 | |
1783 | if (size == 64) | |
1784 | { | |
dd93cd0a | 1785 | Address got_os_addr = got->output_section()->address(); |
c9269dff | 1786 | |
cf43a2fe AM |
1787 | // Write out call stubs. |
1788 | typename Glink_entries::const_iterator g; | |
1789 | for (g = this->glink_entries_.begin(); | |
1790 | g != this->glink_entries_.end(); | |
1791 | ++g) | |
1792 | { | |
dd93cd0a AM |
1793 | Address plt_addr = plt_base + g->first.sym_->plt_offset(); |
1794 | const Powerpc_relobj<size, big_endian>* ppcobj = static_cast | |
1795 | <const Powerpc_relobj<size, big_endian>*>(g->first.object_); | |
1796 | Address got_addr = got_os_addr + ppcobj->toc_base_offset(); | |
1797 | Address pltoff = plt_addr - got_addr; | |
cf43a2fe AM |
1798 | |
1799 | if (pltoff + 0x80008000 > 0xffffffff || (pltoff & 7) != 0) | |
1800 | gold_error(_("%s: linkage table error against `%s'"), | |
1801 | g->first.object_->name().c_str(), | |
1802 | g->first.sym_->demangled_name().c_str()); | |
1803 | ||
1804 | p = oview + g->second * this->glink_entry_size(); | |
1805 | if (ha(pltoff) != 0) | |
1806 | { | |
1807 | write_insn<big_endian>(p, addis_12_2 + ha(pltoff)), p += 4; | |
1808 | write_insn<big_endian>(p, std_2_1 + 40), p += 4; | |
1809 | write_insn<big_endian>(p, ld_11_12 + l(pltoff)), p += 4; | |
1810 | if (ha(pltoff + 16) != ha(pltoff)) | |
1811 | { | |
1812 | write_insn<big_endian>(p, addi_12_12 + l(pltoff)), p += 4; | |
1813 | pltoff = 0; | |
1814 | } | |
1815 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
1816 | write_insn<big_endian>(p, ld_2_12 + l(pltoff + 8)), p += 4; | |
1817 | write_insn<big_endian>(p, ld_11_12 + l(pltoff + 16)), p += 4; | |
1818 | write_insn<big_endian>(p, bctr), p += 4; | |
1819 | } | |
1820 | else | |
1821 | { | |
1822 | write_insn<big_endian>(p, std_2_1 + 40), p += 4; | |
1823 | write_insn<big_endian>(p, ld_11_2 + l(pltoff)), p += 4; | |
1824 | if (ha(pltoff + 16) != ha(pltoff)) | |
1825 | { | |
1826 | write_insn<big_endian>(p, addi_2_2 + l(pltoff)), p += 4; | |
1827 | pltoff = 0; | |
1828 | } | |
1829 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
1830 | write_insn<big_endian>(p, ld_11_2 + l(pltoff + 16)), p += 4; | |
1831 | write_insn<big_endian>(p, ld_2_2 + l(pltoff + 8)), p += 4; | |
1832 | write_insn<big_endian>(p, bctr), p += 4; | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | // Write pltresolve stub. | |
1837 | p = oview + this->pltresolve_; | |
dd93cd0a AM |
1838 | Address after_bcl = this->address() + this->pltresolve_ + 16; |
1839 | Address pltoff = plt_base - after_bcl; | |
cf43a2fe AM |
1840 | |
1841 | elfcpp::Swap<64, big_endian>::writeval(p, pltoff), p += 8; | |
1842 | ||
1843 | write_insn<big_endian>(p, mflr_12), p += 4; | |
1844 | write_insn<big_endian>(p, bcl_20_31), p += 4; | |
1845 | write_insn<big_endian>(p, mflr_11), p += 4; | |
1846 | write_insn<big_endian>(p, ld_2_11 + l(-16)), p += 4; | |
1847 | write_insn<big_endian>(p, mtlr_12), p += 4; | |
1848 | write_insn<big_endian>(p, add_12_2_11), p += 4; | |
1849 | write_insn<big_endian>(p, ld_11_12 + 0), p += 4; | |
1850 | write_insn<big_endian>(p, ld_2_12 + 8), p += 4; | |
1851 | write_insn<big_endian>(p, mtctr_11), p += 4; | |
1852 | write_insn<big_endian>(p, ld_11_12 + 16), p += 4; | |
1853 | write_insn<big_endian>(p, bctr), p += 4; | |
1854 | while (p < oview + this->pltresolve_ + this->pltresolve_size) | |
1855 | write_insn<big_endian>(p, nop), p += 4; | |
1856 | ||
1857 | // Write lazy link call stubs. | |
1858 | uint32_t indx = 0; | |
1859 | while (p < oview + oview_size) | |
1860 | { | |
1861 | if (indx < 0x8000) | |
1862 | { | |
1863 | write_insn<big_endian>(p, li_0_0 + indx), p += 4; | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | write_insn<big_endian>(p, lis_0_0 + hi(indx)), p += 4; | |
1868 | write_insn<big_endian>(p, ori_0_0_0 + l(indx)), p += 4; | |
1869 | } | |
c9269dff | 1870 | uint32_t branch_off = this->pltresolve_ + 8 - (p - oview); |
cf43a2fe AM |
1871 | write_insn<big_endian>(p, b + (branch_off & 0x3fffffc)), p += 4; |
1872 | indx++; | |
1873 | } | |
1874 | } | |
1875 | else | |
1876 | { | |
dd93cd0a AM |
1877 | // The address of _GLOBAL_OFFSET_TABLE_. |
1878 | Address g_o_t = got->address() + got->g_o_t(); | |
c9269dff | 1879 | |
cf43a2fe AM |
1880 | // Write out call stubs. |
1881 | typename Glink_entries::const_iterator g; | |
1882 | for (g = this->glink_entries_.begin(); | |
1883 | g != this->glink_entries_.end(); | |
1884 | ++g) | |
1885 | { | |
dd93cd0a AM |
1886 | Address plt_addr = plt_base + g->first.sym_->plt_offset(); |
1887 | Address got_addr; | |
1888 | const Address invalid_address = static_cast<Address>(-1); | |
cf43a2fe AM |
1889 | |
1890 | p = oview + g->second * this->glink_entry_size(); | |
1891 | if (parameters->options().output_is_position_independent()) | |
1892 | { | |
d1a8cabd AM |
1893 | const Powerpc_relobj<size, big_endian>* object = static_cast |
1894 | <const Powerpc_relobj<size, big_endian>*>(g->first.object_); | |
1895 | if (object != NULL) | |
1896 | { | |
1897 | unsigned int got2 = object->got2_shndx(); | |
c9269dff AM |
1898 | got_addr = g->first.object_->get_output_section_offset(got2); |
1899 | gold_assert(got_addr != invalid_address); | |
1900 | got_addr += (g->first.object_->output_section(got2)->address() | |
1901 | + g->first.addend_); | |
d1a8cabd | 1902 | } |
cf43a2fe AM |
1903 | else |
1904 | got_addr = g_o_t; | |
1905 | ||
dd93cd0a | 1906 | Address pltoff = plt_addr - got_addr; |
cf43a2fe AM |
1907 | if (ha(pltoff) == 0) |
1908 | { | |
1909 | write_insn<big_endian>(p + 0, lwz_11_30 + l(pltoff)); | |
1910 | write_insn<big_endian>(p + 4, mtctr_11); | |
1911 | write_insn<big_endian>(p + 8, bctr); | |
1912 | } | |
1913 | else | |
1914 | { | |
1915 | write_insn<big_endian>(p + 0, addis_11_30 + ha(pltoff)); | |
1916 | write_insn<big_endian>(p + 4, lwz_11_11 + l(pltoff)); | |
1917 | write_insn<big_endian>(p + 8, mtctr_11); | |
1918 | write_insn<big_endian>(p + 12, bctr); | |
1919 | } | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | write_insn<big_endian>(p + 0, lis_11 + ha(plt_addr)); | |
1924 | write_insn<big_endian>(p + 4, lwz_11_11 + l(plt_addr)); | |
1925 | write_insn<big_endian>(p + 8, mtctr_11); | |
1926 | write_insn<big_endian>(p + 12, bctr); | |
1927 | } | |
1928 | } | |
42cacb20 | 1929 | |
cf43a2fe AM |
1930 | // Write out pltresolve branch table. |
1931 | p = oview + this->pltresolve_; | |
1932 | unsigned int the_end = oview_size - this->pltresolve_size; | |
c9269dff | 1933 | unsigned char* end_p = oview + the_end; |
cf43a2fe AM |
1934 | while (p < end_p - 8 * 4) |
1935 | write_insn<big_endian>(p, b + end_p - p), p += 4; | |
1936 | while (p < end_p) | |
1937 | write_insn<big_endian>(p, nop), p += 4; | |
42cacb20 | 1938 | |
cf43a2fe AM |
1939 | // Write out pltresolve call stub. |
1940 | if (parameters->options().output_is_position_independent()) | |
42cacb20 | 1941 | { |
dd93cd0a AM |
1942 | Address res0_off = this->pltresolve_; |
1943 | Address after_bcl_off = the_end + 12; | |
1944 | Address bcl_res0 = after_bcl_off - res0_off; | |
cf43a2fe AM |
1945 | |
1946 | write_insn<big_endian>(p + 0, addis_11_11 + ha(bcl_res0)); | |
1947 | write_insn<big_endian>(p + 4, mflr_0); | |
1948 | write_insn<big_endian>(p + 8, bcl_20_31); | |
1949 | write_insn<big_endian>(p + 12, addi_11_11 + l(bcl_res0)); | |
1950 | write_insn<big_endian>(p + 16, mflr_12); | |
1951 | write_insn<big_endian>(p + 20, mtlr_0); | |
1952 | write_insn<big_endian>(p + 24, sub_11_11_12); | |
1953 | ||
dd93cd0a | 1954 | Address got_bcl = g_o_t + 4 - (after_bcl_off + this->address()); |
cf43a2fe AM |
1955 | |
1956 | write_insn<big_endian>(p + 28, addis_12_12 + ha(got_bcl)); | |
1957 | if (ha(got_bcl) == ha(got_bcl + 4)) | |
1958 | { | |
1959 | write_insn<big_endian>(p + 32, lwz_0_12 + l(got_bcl)); | |
1960 | write_insn<big_endian>(p + 36, lwz_12_12 + l(got_bcl + 4)); | |
1961 | } | |
1962 | else | |
1963 | { | |
1964 | write_insn<big_endian>(p + 32, lwzu_0_12 + l(got_bcl)); | |
1965 | write_insn<big_endian>(p + 36, lwz_12_12 + 4); | |
1966 | } | |
1967 | write_insn<big_endian>(p + 40, mtctr_0); | |
1968 | write_insn<big_endian>(p + 44, add_0_11_11); | |
1969 | write_insn<big_endian>(p + 48, add_11_0_11); | |
1970 | write_insn<big_endian>(p + 52, bctr); | |
1971 | write_insn<big_endian>(p + 56, nop); | |
1972 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 1973 | } |
cf43a2fe | 1974 | else |
42cacb20 | 1975 | { |
dd93cd0a | 1976 | Address res0 = this->pltresolve_ + this->address(); |
cf43a2fe AM |
1977 | |
1978 | write_insn<big_endian>(p + 0, lis_12 + ha(g_o_t + 4)); | |
1979 | write_insn<big_endian>(p + 4, addis_11_11 + ha(-res0)); | |
1980 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
1981 | write_insn<big_endian>(p + 8, lwz_0_12 + l(g_o_t + 4)); | |
1982 | else | |
1983 | write_insn<big_endian>(p + 8, lwzu_0_12 + l(g_o_t + 4)); | |
1984 | write_insn<big_endian>(p + 12, addi_11_11 + l(-res0)); | |
1985 | write_insn<big_endian>(p + 16, mtctr_0); | |
1986 | write_insn<big_endian>(p + 20, add_0_11_11); | |
1987 | if (ha(g_o_t + 4) == ha(g_o_t + 8)) | |
1988 | write_insn<big_endian>(p + 24, lwz_12_12 + l(g_o_t + 8)); | |
1989 | else | |
1990 | write_insn<big_endian>(p + 24, lwz_12_12 + 4); | |
1991 | write_insn<big_endian>(p + 28, add_11_0_11); | |
1992 | write_insn<big_endian>(p + 32, bctr); | |
1993 | write_insn<big_endian>(p + 36, nop); | |
1994 | write_insn<big_endian>(p + 40, nop); | |
1995 | write_insn<big_endian>(p + 44, nop); | |
1996 | write_insn<big_endian>(p + 48, nop); | |
1997 | write_insn<big_endian>(p + 52, nop); | |
1998 | write_insn<big_endian>(p + 56, nop); | |
1999 | write_insn<big_endian>(p + 60, nop); | |
42cacb20 | 2000 | } |
cf43a2fe | 2001 | p += 64; |
42cacb20 DE |
2002 | } |
2003 | ||
cf43a2fe AM |
2004 | of->write_output_view(off, oview_size, oview); |
2005 | } | |
2006 | ||
2007 | // Create the glink section. | |
42cacb20 | 2008 | |
cf43a2fe AM |
2009 | template<int size, bool big_endian> |
2010 | void | |
2011 | Target_powerpc<size, big_endian>::make_glink_section(Layout* layout) | |
2012 | { | |
2013 | if (this->glink_ == NULL) | |
2014 | { | |
2015 | this->glink_ = new Output_data_glink<size, big_endian>(this); | |
2016 | layout->add_output_section_data(".text", elfcpp::SHT_PROGBITS, | |
2017 | elfcpp::SHF_ALLOC | elfcpp::SHF_EXECINSTR, | |
2018 | this->glink_, ORDER_TEXT, false); | |
2019 | } | |
42cacb20 DE |
2020 | } |
2021 | ||
2022 | // Create a PLT entry for a global symbol. | |
2023 | ||
2024 | template<int size, bool big_endian> | |
2025 | void | |
d83ce4e3 AM |
2026 | Target_powerpc<size, big_endian>::make_plt_entry( |
2027 | Layout* layout, | |
2028 | Symbol* gsym, | |
2029 | const elfcpp::Rela<size, big_endian>& reloc, | |
2030 | const Sized_relobj<size, big_endian>* object) | |
42cacb20 | 2031 | { |
42cacb20 | 2032 | if (this->plt_ == NULL) |
cf43a2fe | 2033 | this->make_plt_section(layout); |
42cacb20 | 2034 | |
cf43a2fe | 2035 | this->plt_->add_entry(gsym); |
612a8d3d | 2036 | |
d1a8cabd | 2037 | this->glink_->add_entry(gsym, reloc, object); |
42cacb20 DE |
2038 | } |
2039 | ||
0e70b911 CC |
2040 | // Return the number of entries in the PLT. |
2041 | ||
2042 | template<int size, bool big_endian> | |
2043 | unsigned int | |
2044 | Target_powerpc<size, big_endian>::plt_entry_count() const | |
2045 | { | |
2046 | if (this->plt_ == NULL) | |
2047 | return 0; | |
2048 | return this->plt_->entry_count(); | |
2049 | } | |
2050 | ||
2051 | // Return the offset of the first non-reserved PLT entry. | |
2052 | ||
2053 | template<int size, bool big_endian> | |
2054 | unsigned int | |
2055 | Target_powerpc<size, big_endian>::first_plt_entry_offset() const | |
2056 | { | |
2057 | return Output_data_plt_powerpc<size, big_endian>::first_plt_entry_offset(); | |
2058 | } | |
2059 | ||
2060 | // Return the size of each PLT entry. | |
2061 | ||
2062 | template<int size, bool big_endian> | |
2063 | unsigned int | |
2064 | Target_powerpc<size, big_endian>::plt_entry_size() const | |
2065 | { | |
2066 | return Output_data_plt_powerpc<size, big_endian>::get_plt_entry_size(); | |
2067 | } | |
2068 | ||
dd93cd0a | 2069 | // Create a GOT entry for local dynamic __tls_get_addr calls. |
42cacb20 DE |
2070 | |
2071 | template<int size, bool big_endian> | |
2072 | unsigned int | |
dd93cd0a | 2073 | Target_powerpc<size, big_endian>::tlsld_got_offset( |
6fa2a40b CC |
2074 | Symbol_table* symtab, |
2075 | Layout* layout, | |
2076 | Sized_relobj_file<size, big_endian>* object) | |
42cacb20 | 2077 | { |
dd93cd0a | 2078 | if (this->tlsld_got_offset_ == -1U) |
42cacb20 DE |
2079 | { |
2080 | gold_assert(symtab != NULL && layout != NULL && object != NULL); | |
2081 | Reloc_section* rela_dyn = this->rela_dyn_section(layout); | |
dd93cd0a AM |
2082 | Output_data_got_powerpc<size, big_endian>* got |
2083 | = this->got_section(symtab, layout); | |
2084 | unsigned int got_offset = got->add_constant_pair(0, 0); | |
42cacb20 DE |
2085 | rela_dyn->add_local(object, 0, elfcpp::R_POWERPC_DTPMOD, got, |
2086 | got_offset, 0); | |
dd93cd0a | 2087 | this->tlsld_got_offset_ = got_offset; |
42cacb20 | 2088 | } |
dd93cd0a | 2089 | return this->tlsld_got_offset_; |
42cacb20 DE |
2090 | } |
2091 | ||
95a2c8d6 RS |
2092 | // Get the Reference_flags for a particular relocation. |
2093 | ||
2094 | template<int size, bool big_endian> | |
2095 | int | |
d83ce4e3 | 2096 | Target_powerpc<size, big_endian>::Scan::get_reference_flags(unsigned int r_type) |
95a2c8d6 RS |
2097 | { |
2098 | switch (r_type) | |
2099 | { | |
2100 | case elfcpp::R_POWERPC_NONE: | |
2101 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
2102 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
2103 | case elfcpp::R_PPC64_TOC: | |
2104 | // No symbol reference. | |
2105 | return 0; | |
2106 | ||
dd93cd0a AM |
2107 | case elfcpp::R_PPC64_ADDR64: |
2108 | case elfcpp::R_PPC64_UADDR64: | |
2109 | case elfcpp::R_POWERPC_ADDR32: | |
2110 | case elfcpp::R_POWERPC_UADDR32: | |
95a2c8d6 | 2111 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 2112 | case elfcpp::R_POWERPC_UADDR16: |
95a2c8d6 RS |
2113 | case elfcpp::R_POWERPC_ADDR16_LO: |
2114 | case elfcpp::R_POWERPC_ADDR16_HI: | |
2115 | case elfcpp::R_POWERPC_ADDR16_HA: | |
95a2c8d6 RS |
2116 | return Symbol::ABSOLUTE_REF; |
2117 | ||
dd93cd0a AM |
2118 | case elfcpp::R_POWERPC_ADDR24: |
2119 | case elfcpp::R_POWERPC_ADDR14: | |
2120 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
2121 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
2122 | return Symbol::FUNCTION_CALL | Symbol::ABSOLUTE_REF; | |
2123 | ||
2124 | case elfcpp::R_POWERPC_REL32: | |
95a2c8d6 | 2125 | case elfcpp::R_PPC_LOCAL24PC: |
6ce78956 AM |
2126 | case elfcpp::R_POWERPC_REL16: |
2127 | case elfcpp::R_POWERPC_REL16_LO: | |
2128 | case elfcpp::R_POWERPC_REL16_HI: | |
2129 | case elfcpp::R_POWERPC_REL16_HA: | |
95a2c8d6 RS |
2130 | return Symbol::RELATIVE_REF; |
2131 | ||
dd93cd0a | 2132 | case elfcpp::R_POWERPC_REL24: |
95a2c8d6 | 2133 | case elfcpp::R_PPC_PLTREL24: |
dd93cd0a AM |
2134 | case elfcpp::R_POWERPC_REL14: |
2135 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
2136 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
95a2c8d6 RS |
2137 | return Symbol::FUNCTION_CALL | Symbol::RELATIVE_REF; |
2138 | ||
2139 | case elfcpp::R_POWERPC_GOT16: | |
2140 | case elfcpp::R_POWERPC_GOT16_LO: | |
2141 | case elfcpp::R_POWERPC_GOT16_HI: | |
2142 | case elfcpp::R_POWERPC_GOT16_HA: | |
2143 | case elfcpp::R_PPC64_TOC16: | |
2144 | case elfcpp::R_PPC64_TOC16_LO: | |
2145 | case elfcpp::R_PPC64_TOC16_HI: | |
2146 | case elfcpp::R_PPC64_TOC16_HA: | |
2147 | case elfcpp::R_PPC64_TOC16_DS: | |
2148 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
2149 | // Absolute in GOT. | |
2150 | return Symbol::ABSOLUTE_REF; | |
2151 | ||
2152 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
2153 | case elfcpp::R_POWERPC_TLS: | |
2154 | return Symbol::TLS_REF; | |
2155 | ||
2156 | case elfcpp::R_POWERPC_COPY: | |
2157 | case elfcpp::R_POWERPC_GLOB_DAT: | |
2158 | case elfcpp::R_POWERPC_JMP_SLOT: | |
2159 | case elfcpp::R_POWERPC_RELATIVE: | |
2160 | case elfcpp::R_POWERPC_DTPMOD: | |
2161 | default: | |
2162 | // Not expected. We will give an error later. | |
2163 | return 0; | |
2164 | } | |
2165 | } | |
2166 | ||
42cacb20 DE |
2167 | // Report an unsupported relocation against a local symbol. |
2168 | ||
2169 | template<int size, bool big_endian> | |
2170 | void | |
2171 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_local( | |
d83ce4e3 AM |
2172 | Sized_relobj_file<size, big_endian>* object, |
2173 | unsigned int r_type) | |
42cacb20 DE |
2174 | { |
2175 | gold_error(_("%s: unsupported reloc %u against local symbol"), | |
2176 | object->name().c_str(), r_type); | |
2177 | } | |
2178 | ||
2179 | // We are about to emit a dynamic relocation of type R_TYPE. If the | |
2180 | // dynamic linker does not support it, issue an error. | |
2181 | ||
2182 | template<int size, bool big_endian> | |
2183 | void | |
2184 | Target_powerpc<size, big_endian>::Scan::check_non_pic(Relobj* object, | |
2185 | unsigned int r_type) | |
2186 | { | |
2187 | gold_assert(r_type != elfcpp::R_POWERPC_NONE); | |
2188 | ||
2189 | // These are the relocation types supported by glibc for both 32-bit | |
2190 | // and 64-bit powerpc. | |
2191 | switch (r_type) | |
2192 | { | |
2193 | case elfcpp::R_POWERPC_RELATIVE: | |
2194 | case elfcpp::R_POWERPC_GLOB_DAT: | |
2195 | case elfcpp::R_POWERPC_DTPMOD: | |
2196 | case elfcpp::R_POWERPC_DTPREL: | |
2197 | case elfcpp::R_POWERPC_TPREL: | |
2198 | case elfcpp::R_POWERPC_JMP_SLOT: | |
2199 | case elfcpp::R_POWERPC_COPY: | |
2200 | case elfcpp::R_POWERPC_ADDR32: | |
2201 | case elfcpp::R_POWERPC_ADDR24: | |
2202 | case elfcpp::R_POWERPC_REL24: | |
2203 | return; | |
2204 | ||
2205 | default: | |
2206 | break; | |
2207 | } | |
2208 | ||
2209 | if (size == 64) | |
2210 | { | |
2211 | switch (r_type) | |
2212 | { | |
2213 | // These are the relocation types supported only on 64-bit. | |
2214 | case elfcpp::R_PPC64_ADDR64: | |
2215 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
2216 | case elfcpp::R_PPC64_TPREL16_DS: | |
2217 | case elfcpp::R_POWERPC_TPREL16: | |
2218 | case elfcpp::R_POWERPC_TPREL16_LO: | |
2219 | case elfcpp::R_POWERPC_TPREL16_HI: | |
2220 | case elfcpp::R_POWERPC_TPREL16_HA: | |
2221 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
2222 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
2223 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
2224 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
2225 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
2226 | case elfcpp::R_POWERPC_ADDR16_LO: | |
2227 | case elfcpp::R_POWERPC_ADDR16_HI: | |
2228 | case elfcpp::R_POWERPC_ADDR16_HA: | |
2229 | case elfcpp::R_POWERPC_ADDR30: | |
2230 | case elfcpp::R_PPC64_UADDR64: | |
2231 | case elfcpp::R_POWERPC_UADDR32: | |
2232 | case elfcpp::R_POWERPC_ADDR16: | |
2233 | case elfcpp::R_POWERPC_UADDR16: | |
2234 | case elfcpp::R_PPC64_ADDR16_DS: | |
2235 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
2236 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
2237 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
2238 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
2239 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
2240 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
2241 | case elfcpp::R_POWERPC_REL32: | |
2242 | case elfcpp::R_PPC64_REL64: | |
2243 | return; | |
2244 | ||
2245 | default: | |
2246 | break; | |
2247 | } | |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | switch (r_type) | |
2252 | { | |
2253 | // These are the relocation types supported only on 32-bit. | |
2254 | ||
2255 | default: | |
2256 | break; | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | // This prevents us from issuing more than one error per reloc | |
2261 | // section. But we can still wind up issuing more than one | |
2262 | // error per object file. | |
2263 | if (this->issued_non_pic_error_) | |
2264 | return; | |
33aea2fd | 2265 | gold_assert(parameters->options().output_is_position_independent()); |
42cacb20 DE |
2266 | object->error(_("requires unsupported dynamic reloc; " |
2267 | "recompile with -fPIC")); | |
2268 | this->issued_non_pic_error_ = true; | |
2269 | return; | |
2270 | } | |
2271 | ||
2272 | // Scan a relocation for a local symbol. | |
2273 | ||
2274 | template<int size, bool big_endian> | |
2275 | inline void | |
2276 | Target_powerpc<size, big_endian>::Scan::local( | |
d83ce4e3 AM |
2277 | Symbol_table* symtab, |
2278 | Layout* layout, | |
2279 | Target_powerpc<size, big_endian>* target, | |
2280 | Sized_relobj_file<size, big_endian>* object, | |
2281 | unsigned int data_shndx, | |
2282 | Output_section* output_section, | |
2283 | const elfcpp::Rela<size, big_endian>& reloc, | |
2284 | unsigned int r_type, | |
2285 | const elfcpp::Sym<size, big_endian>& lsym) | |
42cacb20 | 2286 | { |
dd93cd0a AM |
2287 | Powerpc_relobj<size, big_endian>* ppc_object |
2288 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
2289 | ||
42cacb20 DE |
2290 | switch (r_type) |
2291 | { | |
2292 | case elfcpp::R_POWERPC_NONE: | |
2293 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
2294 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
6ce78956 | 2295 | case elfcpp::R_PPC64_TOCSAVE: |
dd93cd0a AM |
2296 | case elfcpp::R_PPC_EMB_MRKREF: |
2297 | break; | |
2298 | ||
2299 | case elfcpp::R_PPC64_TOC: | |
2300 | { | |
2301 | Output_data_got_powerpc<size, big_endian>* got | |
2302 | = target->got_section(symtab, layout); | |
2303 | if (parameters->options().output_is_position_independent()) | |
2304 | { | |
2305 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2306 | rela_dyn->add_output_section_relative(got->output_section(), | |
2307 | elfcpp::R_POWERPC_RELATIVE, | |
2308 | output_section, | |
2309 | object, data_shndx, | |
2310 | reloc.get_r_offset(), | |
2311 | ppc_object->toc_base_offset()); | |
2312 | } | |
2313 | } | |
42cacb20 DE |
2314 | break; |
2315 | ||
2316 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 2317 | case elfcpp::R_PPC64_UADDR64: |
42cacb20 | 2318 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
2319 | case elfcpp::R_POWERPC_UADDR32: |
2320 | case elfcpp::R_POWERPC_ADDR24: | |
c9269dff | 2321 | case elfcpp::R_POWERPC_ADDR16: |
42cacb20 | 2322 | case elfcpp::R_POWERPC_ADDR16_LO: |
c9269dff AM |
2323 | case elfcpp::R_POWERPC_ADDR16_HI: |
2324 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a AM |
2325 | case elfcpp::R_POWERPC_UADDR16: |
2326 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
2327 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
2328 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
2329 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
2330 | case elfcpp::R_PPC64_ADDR16_DS: | |
2331 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
2332 | case elfcpp::R_POWERPC_ADDR14: | |
2333 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
2334 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 DE |
2335 | // If building a shared library (or a position-independent |
2336 | // executable), we need to create a dynamic relocation for | |
2337 | // this location. | |
2338 | if (parameters->options().output_is_position_independent()) | |
2e702c99 RM |
2339 | { |
2340 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
42cacb20 | 2341 | |
dd93cd0a AM |
2342 | if ((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
2343 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2e702c99 RM |
2344 | { |
2345 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
dd93cd0a AM |
2346 | rela_dyn->add_local_relative(object, r_sym, |
2347 | elfcpp::R_POWERPC_RELATIVE, | |
2348 | output_section, data_shndx, | |
2349 | reloc.get_r_offset(), | |
2350 | reloc.get_r_addend(), false); | |
2e702c99 RM |
2351 | } |
2352 | else | |
2353 | { | |
dd93cd0a | 2354 | check_non_pic(object, r_type); |
42cacb20 | 2355 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); |
dd93cd0a AM |
2356 | rela_dyn->add_local(object, r_sym, r_type, output_section, |
2357 | data_shndx, reloc.get_r_offset(), | |
2358 | reloc.get_r_addend()); | |
2e702c99 RM |
2359 | } |
2360 | } | |
42cacb20 DE |
2361 | break; |
2362 | ||
dd93cd0a | 2363 | case elfcpp::R_POWERPC_REL32: |
42cacb20 DE |
2364 | case elfcpp::R_POWERPC_REL24: |
2365 | case elfcpp::R_PPC_LOCAL24PC: | |
dd93cd0a | 2366 | case elfcpp::R_POWERPC_REL16: |
6ce78956 | 2367 | case elfcpp::R_POWERPC_REL16_LO: |
dd93cd0a | 2368 | case elfcpp::R_POWERPC_REL16_HI: |
6ce78956 | 2369 | case elfcpp::R_POWERPC_REL16_HA: |
dd93cd0a AM |
2370 | case elfcpp::R_POWERPC_REL14: |
2371 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
2372 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
2373 | case elfcpp::R_POWERPC_SECTOFF: | |
2374 | case elfcpp::R_POWERPC_TPREL16: | |
2375 | case elfcpp::R_POWERPC_DTPREL16: | |
2376 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
2377 | case elfcpp::R_POWERPC_TPREL16_LO: | |
2378 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
2379 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
2380 | case elfcpp::R_POWERPC_TPREL16_HI: | |
2381 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
2382 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
2383 | case elfcpp::R_POWERPC_TPREL16_HA: | |
2384 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
2385 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
2386 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
2387 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
2388 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
2389 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
2390 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
2391 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
2392 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
2393 | case elfcpp::R_PPC64_TPREL16_DS: | |
2394 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
2395 | case elfcpp::R_PPC64_DTPREL16_DS: | |
2396 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
2397 | case elfcpp::R_PPC64_SECTOFF_DS: | |
2398 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
2399 | case elfcpp::R_PPC64_TLSGD: | |
2400 | case elfcpp::R_PPC64_TLSLD: | |
42cacb20 DE |
2401 | break; |
2402 | ||
2403 | case elfcpp::R_POWERPC_GOT16: | |
2404 | case elfcpp::R_POWERPC_GOT16_LO: | |
2405 | case elfcpp::R_POWERPC_GOT16_HI: | |
2406 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
2407 | case elfcpp::R_PPC64_GOT16_DS: |
2408 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 2409 | { |
c9269dff | 2410 | // The symbol requires a GOT entry. |
dd93cd0a AM |
2411 | Output_data_got_powerpc<size, big_endian>* got |
2412 | = target->got_section(symtab, layout); | |
2413 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
42cacb20 DE |
2414 | |
2415 | // If we are generating a shared object, we need to add a | |
2416 | // dynamic relocation for this symbol's GOT entry. | |
2417 | if (parameters->options().output_is_position_independent()) | |
2418 | { | |
2419 | if (!object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)) | |
2420 | { | |
2421 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2422 | unsigned int off; | |
2423 | ||
2424 | off = got->add_constant(0); | |
2425 | object->set_local_got_offset(r_sym, GOT_TYPE_STANDARD, off); | |
2426 | rela_dyn->add_local_relative(object, r_sym, | |
2427 | elfcpp::R_POWERPC_RELATIVE, | |
397b129b | 2428 | got, off, 0, false); |
42cacb20 | 2429 | } |
2e702c99 | 2430 | } |
42cacb20 DE |
2431 | else |
2432 | got->add_local(object, r_sym, GOT_TYPE_STANDARD); | |
2433 | } | |
2434 | break; | |
2435 | ||
cf43a2fe AM |
2436 | case elfcpp::R_PPC64_TOC16: |
2437 | case elfcpp::R_PPC64_TOC16_LO: | |
2438 | case elfcpp::R_PPC64_TOC16_HI: | |
2439 | case elfcpp::R_PPC64_TOC16_HA: | |
2440 | case elfcpp::R_PPC64_TOC16_DS: | |
2441 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
2442 | // We need a GOT section. |
2443 | target->got_section(symtab, layout); | |
2444 | break; | |
2445 | ||
dd93cd0a AM |
2446 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
2447 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
2448 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
2449 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
2450 | { | |
2451 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(true); | |
2452 | if (tls_type == tls::TLSOPT_NONE) | |
2453 | { | |
2454 | Output_data_got_powerpc<size, big_endian>* got | |
2455 | = target->got_section(symtab, layout); | |
2456 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2457 | unsigned int shndx = lsym.get_st_shndx(); | |
2458 | bool is_ordinary; | |
2459 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
2460 | gold_assert(is_ordinary); | |
2461 | got->add_local_pair_with_rel(object, r_sym, | |
2462 | shndx, | |
2463 | GOT_TYPE_TLSGD, | |
2464 | target->rela_dyn_section(layout), | |
2465 | elfcpp::R_POWERPC_DTPMOD, | |
2466 | elfcpp::R_POWERPC_DTPREL); | |
2467 | } | |
2468 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2469 | { | |
2470 | // no GOT relocs needed for Local Exec. | |
2471 | } | |
2472 | else | |
2473 | gold_unreachable(); | |
2474 | } | |
42cacb20 DE |
2475 | break; |
2476 | ||
dd93cd0a AM |
2477 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
2478 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
2479 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
2480 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
2481 | { | |
2482 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
2483 | if (tls_type == tls::TLSOPT_NONE) | |
2484 | target->tlsld_got_offset(symtab, layout, object); | |
2485 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2486 | { | |
2487 | // no GOT relocs needed for Local Exec. | |
2488 | } | |
2489 | else | |
2490 | gold_unreachable(); | |
2491 | } | |
42cacb20 | 2492 | break; |
42cacb20 | 2493 | |
dd93cd0a AM |
2494 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
2495 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
2496 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
2497 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
2498 | { | |
2499 | Output_data_got_powerpc<size, big_endian>* got | |
2500 | = target->got_section(symtab, layout); | |
2501 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2502 | got->add_local_with_rel(object, r_sym, GOT_TYPE_DTPREL, | |
2503 | target->rela_dyn_section(layout), | |
2504 | elfcpp::R_POWERPC_DTPREL); | |
2505 | } | |
2506 | break; | |
42cacb20 | 2507 | |
dd93cd0a AM |
2508 | case elfcpp::R_POWERPC_GOT_TPREL16: |
2509 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
2510 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
2511 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
2512 | { | |
2513 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(true); | |
2514 | if (tls_type == tls::TLSOPT_NONE) | |
2515 | { | |
2516 | Output_data_got_powerpc<size, big_endian>* got | |
2517 | = target->got_section(symtab, layout); | |
2518 | unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); | |
2519 | got->add_local_with_rel(object, r_sym, GOT_TYPE_TPREL, | |
2520 | target->rela_dyn_section(layout), | |
2521 | elfcpp::R_POWERPC_TPREL); | |
2522 | } | |
2523 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2524 | { | |
2525 | // no GOT relocs needed for Local Exec. | |
2526 | } | |
2527 | else | |
2528 | gold_unreachable(); | |
2529 | } | |
2530 | break; | |
2531 | ||
2532 | default: | |
2533 | unsupported_reloc_local(object, r_type); | |
2534 | break; | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | // Report an unsupported relocation against a global symbol. | |
2539 | ||
2540 | template<int size, bool big_endian> | |
2541 | void | |
2542 | Target_powerpc<size, big_endian>::Scan::unsupported_reloc_global( | |
2543 | Sized_relobj_file<size, big_endian>* object, | |
2544 | unsigned int r_type, | |
2545 | Symbol* gsym) | |
2546 | { | |
42cacb20 DE |
2547 | gold_error(_("%s: unsupported reloc %u against global symbol %s"), |
2548 | object->name().c_str(), r_type, gsym->demangled_name().c_str()); | |
2549 | } | |
2550 | ||
2551 | // Scan a relocation for a global symbol. | |
2552 | ||
2553 | template<int size, bool big_endian> | |
2554 | inline void | |
2555 | Target_powerpc<size, big_endian>::Scan::global( | |
d83ce4e3 AM |
2556 | Symbol_table* symtab, |
2557 | Layout* layout, | |
2558 | Target_powerpc<size, big_endian>* target, | |
2559 | Sized_relobj_file<size, big_endian>* object, | |
2560 | unsigned int data_shndx, | |
2561 | Output_section* output_section, | |
2562 | const elfcpp::Rela<size, big_endian>& reloc, | |
2563 | unsigned int r_type, | |
2564 | Symbol* gsym) | |
42cacb20 | 2565 | { |
dd93cd0a AM |
2566 | Powerpc_relobj<size, big_endian>* ppc_object |
2567 | = static_cast<Powerpc_relobj<size, big_endian>*>(object); | |
2568 | ||
42cacb20 DE |
2569 | switch (r_type) |
2570 | { | |
2571 | case elfcpp::R_POWERPC_NONE: | |
2572 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
2573 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
cf43a2fe | 2574 | case elfcpp::R_PPC_LOCAL24PC: |
dd93cd0a AM |
2575 | case elfcpp::R_PPC_EMB_MRKREF: |
2576 | break; | |
2577 | ||
2578 | case elfcpp::R_PPC64_TOC: | |
2579 | { | |
2580 | Output_data_got_powerpc<size, big_endian>* got | |
2581 | = target->got_section(symtab, layout); | |
2582 | if (parameters->options().output_is_position_independent()) | |
2583 | { | |
2584 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2585 | Powerpc_relobj<size, big_endian>* symobj = ppc_object; | |
2586 | if (data_shndx != ppc_object->opd_shndx()) | |
2587 | symobj = static_cast | |
2588 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
2589 | rela_dyn->add_output_section_relative(got->output_section(), | |
2590 | elfcpp::R_POWERPC_RELATIVE, | |
2591 | output_section, | |
2592 | object, data_shndx, | |
2593 | reloc.get_r_offset(), | |
2594 | symobj->toc_base_offset()); | |
2595 | } | |
2596 | } | |
42cacb20 DE |
2597 | break; |
2598 | ||
c9269dff | 2599 | case elfcpp::R_PPC64_ADDR64: |
dd93cd0a | 2600 | case elfcpp::R_PPC64_UADDR64: |
c9269dff | 2601 | case elfcpp::R_POWERPC_ADDR32: |
dd93cd0a AM |
2602 | case elfcpp::R_POWERPC_UADDR32: |
2603 | case elfcpp::R_POWERPC_ADDR24: | |
42cacb20 DE |
2604 | case elfcpp::R_POWERPC_ADDR16: |
2605 | case elfcpp::R_POWERPC_ADDR16_LO: | |
2606 | case elfcpp::R_POWERPC_ADDR16_HI: | |
2607 | case elfcpp::R_POWERPC_ADDR16_HA: | |
dd93cd0a AM |
2608 | case elfcpp::R_POWERPC_UADDR16: |
2609 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
2610 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
2611 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
2612 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
2613 | case elfcpp::R_PPC64_ADDR16_DS: | |
2614 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
2615 | case elfcpp::R_POWERPC_ADDR14: | |
2616 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
2617 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
42cacb20 | 2618 | { |
c9269dff AM |
2619 | // Make a PLT entry if necessary. |
2620 | if (gsym->needs_plt_entry()) | |
2621 | { | |
cf43a2fe | 2622 | target->make_plt_entry(layout, gsym, reloc, 0); |
2e702c99 RM |
2623 | // Since this is not a PC-relative relocation, we may be |
2624 | // taking the address of a function. In that case we need to | |
2625 | // set the entry in the dynamic symbol table to the address of | |
2626 | // the PLT entry. | |
cf43a2fe AM |
2627 | if (size == 32 |
2628 | && gsym->is_from_dynobj() && !parameters->options().shared()) | |
2e702c99 | 2629 | gsym->set_needs_dynsym_value(); |
c9269dff AM |
2630 | } |
2631 | // Make a dynamic relocation if necessary. | |
dd93cd0a | 2632 | if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type))) |
c9269dff AM |
2633 | { |
2634 | if (gsym->may_need_copy_reloc()) | |
2635 | { | |
2636 | target->copy_reloc(symtab, layout, object, | |
2637 | data_shndx, output_section, gsym, reloc); | |
2638 | } | |
dd93cd0a AM |
2639 | else if (((size == 32 && r_type == elfcpp::R_POWERPC_ADDR32) |
2640 | || (size == 64 && r_type == elfcpp::R_PPC64_ADDR64)) | |
2641 | && (gsym->can_use_relative_reloc(false) | |
2642 | || data_shndx == ppc_object->opd_shndx())) | |
2e702c99 RM |
2643 | { |
2644 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2645 | rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, | |
42cacb20 DE |
2646 | output_section, object, |
2647 | data_shndx, reloc.get_r_offset(), | |
13cf9988 | 2648 | reloc.get_r_addend(), false); |
2e702c99 RM |
2649 | } |
2650 | else | |
2651 | { | |
2652 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
42cacb20 | 2653 | check_non_pic(object, r_type); |
dd93cd0a AM |
2654 | rela_dyn->add_global(gsym, r_type, output_section, |
2655 | object, data_shndx, | |
2656 | reloc.get_r_offset(), | |
2657 | reloc.get_r_addend()); | |
2e702c99 RM |
2658 | } |
2659 | } | |
42cacb20 DE |
2660 | } |
2661 | break; | |
2662 | ||
cf43a2fe | 2663 | case elfcpp::R_PPC_PLTREL24: |
42cacb20 | 2664 | case elfcpp::R_POWERPC_REL24: |
42cacb20 | 2665 | { |
cf43a2fe AM |
2666 | if (gsym->needs_plt_entry() |
2667 | || (!gsym->final_value_is_known() | |
2668 | && !(gsym->is_defined() | |
2669 | && !gsym->is_from_dynobj() | |
2670 | && !gsym->is_preemptible()))) | |
d1a8cabd | 2671 | target->make_plt_entry(layout, gsym, reloc, object); |
42cacb20 | 2672 | // Make a dynamic relocation if necessary. |
dd93cd0a | 2673 | if (needs_dynamic_reloc<size>(gsym, Scan::get_reference_flags(r_type))) |
42cacb20 | 2674 | { |
966d4097 | 2675 | if (gsym->may_need_copy_reloc()) |
42cacb20 DE |
2676 | { |
2677 | target->copy_reloc(symtab, layout, object, | |
2678 | data_shndx, output_section, gsym, | |
2679 | reloc); | |
2680 | } | |
2681 | else | |
2682 | { | |
2683 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2684 | check_non_pic(object, r_type); | |
2685 | rela_dyn->add_global(gsym, r_type, output_section, object, | |
2686 | data_shndx, reloc.get_r_offset(), | |
2687 | reloc.get_r_addend()); | |
2688 | } | |
2689 | } | |
2690 | } | |
2691 | break; | |
2692 | ||
dd93cd0a | 2693 | case elfcpp::R_POWERPC_REL32: |
6ce78956 AM |
2694 | case elfcpp::R_POWERPC_REL16: |
2695 | case elfcpp::R_POWERPC_REL16_LO: | |
2696 | case elfcpp::R_POWERPC_REL16_HI: | |
2697 | case elfcpp::R_POWERPC_REL16_HA: | |
dd93cd0a AM |
2698 | case elfcpp::R_POWERPC_REL14: |
2699 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
2700 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
2701 | case elfcpp::R_POWERPC_SECTOFF: | |
2702 | case elfcpp::R_POWERPC_TPREL16: | |
2703 | case elfcpp::R_POWERPC_DTPREL16: | |
2704 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
2705 | case elfcpp::R_POWERPC_TPREL16_LO: | |
2706 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
2707 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
2708 | case elfcpp::R_POWERPC_TPREL16_HI: | |
2709 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
2710 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
2711 | case elfcpp::R_POWERPC_TPREL16_HA: | |
2712 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
2713 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
2714 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
2715 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
2716 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
2717 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
2718 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
2719 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
2720 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
2721 | case elfcpp::R_PPC64_TPREL16_DS: | |
2722 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
2723 | case elfcpp::R_PPC64_DTPREL16_DS: | |
2724 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
2725 | case elfcpp::R_PPC64_SECTOFF_DS: | |
2726 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
2727 | case elfcpp::R_PPC64_TLSGD: | |
2728 | case elfcpp::R_PPC64_TLSLD: | |
cf43a2fe AM |
2729 | break; |
2730 | ||
42cacb20 DE |
2731 | case elfcpp::R_POWERPC_GOT16: |
2732 | case elfcpp::R_POWERPC_GOT16_LO: | |
2733 | case elfcpp::R_POWERPC_GOT16_HI: | |
2734 | case elfcpp::R_POWERPC_GOT16_HA: | |
dd93cd0a AM |
2735 | case elfcpp::R_PPC64_GOT16_DS: |
2736 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
42cacb20 | 2737 | { |
c9269dff AM |
2738 | // The symbol requires a GOT entry. |
2739 | Output_data_got_powerpc<size, big_endian>* got; | |
42cacb20 DE |
2740 | |
2741 | got = target->got_section(symtab, layout); | |
2e702c99 RM |
2742 | if (gsym->final_value_is_known()) |
2743 | got->add_global(gsym, GOT_TYPE_STANDARD); | |
2744 | else | |
2745 | { | |
2746 | // If this symbol is not fully resolved, we need to add a | |
2747 | // dynamic relocation for it. | |
2748 | Reloc_section* rela_dyn = target->rela_dyn_section(layout); | |
2749 | if (gsym->is_from_dynobj() | |
2750 | || gsym->is_undefined() | |
2751 | || gsym->is_preemptible()) | |
2752 | got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, | |
83896202 | 2753 | elfcpp::R_POWERPC_GLOB_DAT); |
2e702c99 RM |
2754 | else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) |
2755 | { | |
42cacb20 DE |
2756 | unsigned int off = got->add_constant(0); |
2757 | ||
2758 | gsym->set_got_offset(GOT_TYPE_STANDARD, off); | |
2759 | rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, | |
13cf9988 | 2760 | got, off, 0, false); |
42cacb20 | 2761 | } |
2e702c99 | 2762 | } |
42cacb20 DE |
2763 | } |
2764 | break; | |
2765 | ||
cf43a2fe AM |
2766 | case elfcpp::R_PPC64_TOC16: |
2767 | case elfcpp::R_PPC64_TOC16_LO: | |
2768 | case elfcpp::R_PPC64_TOC16_HI: | |
2769 | case elfcpp::R_PPC64_TOC16_HA: | |
2770 | case elfcpp::R_PPC64_TOC16_DS: | |
2771 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
42cacb20 DE |
2772 | // We need a GOT section. |
2773 | target->got_section(symtab, layout); | |
2774 | break; | |
2775 | ||
dd93cd0a AM |
2776 | case elfcpp::R_POWERPC_GOT_TLSGD16: |
2777 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
2778 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
2779 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
2780 | { | |
2781 | const bool final = gsym->final_value_is_known(); | |
2782 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
2783 | if (tls_type == tls::TLSOPT_NONE) | |
2784 | { | |
2785 | Output_data_got_powerpc<size, big_endian>* got | |
2786 | = target->got_section(symtab, layout); | |
2787 | got->add_global_pair_with_rel(gsym, GOT_TYPE_TLSGD, | |
2788 | target->rela_dyn_section(layout), | |
2789 | elfcpp::R_POWERPC_DTPMOD, | |
2790 | elfcpp::R_POWERPC_DTPREL); | |
2791 | } | |
2792 | else if (tls_type == tls::TLSOPT_TO_IE) | |
2793 | { | |
2794 | Output_data_got_powerpc<size, big_endian>* got | |
2795 | = target->got_section(symtab, layout); | |
2796 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, | |
2797 | target->rela_dyn_section(layout), | |
2798 | elfcpp::R_POWERPC_TPREL); | |
2799 | } | |
2800 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2801 | { | |
2802 | // no GOT relocs needed for Local Exec. | |
2803 | } | |
2804 | else | |
2805 | gold_unreachable(); | |
2806 | } | |
42cacb20 DE |
2807 | break; |
2808 | ||
dd93cd0a AM |
2809 | case elfcpp::R_POWERPC_GOT_TLSLD16: |
2810 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
2811 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
2812 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
2813 | { | |
2814 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
2815 | if (tls_type == tls::TLSOPT_NONE) | |
2816 | target->tlsld_got_offset(symtab, layout, object); | |
2817 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2818 | { | |
2819 | // no GOT relocs needed for Local Exec. | |
2820 | } | |
2821 | else | |
2822 | gold_unreachable(); | |
2823 | } | |
2824 | break; | |
2825 | ||
2826 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
2827 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
2828 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
2829 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
2830 | { | |
2831 | Output_data_got_powerpc<size, big_endian>* got | |
2832 | = target->got_section(symtab, layout); | |
2833 | got->add_global_with_rel(gsym, GOT_TYPE_DTPREL, | |
2834 | target->rela_dyn_section(layout), | |
2835 | elfcpp::R_POWERPC_DTPREL); | |
2836 | } | |
2837 | break; | |
2838 | ||
2839 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
2840 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
2841 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
2842 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
2843 | { | |
2844 | const bool final = gsym->final_value_is_known(); | |
2845 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
2846 | if (tls_type == tls::TLSOPT_NONE) | |
2847 | { | |
2848 | Output_data_got_powerpc<size, big_endian>* got | |
2849 | = target->got_section(symtab, layout); | |
2850 | got->add_global_with_rel(gsym, GOT_TYPE_TPREL, | |
2851 | target->rela_dyn_section(layout), | |
2852 | elfcpp::R_POWERPC_TPREL); | |
2853 | } | |
2854 | else if (tls_type == tls::TLSOPT_TO_LE) | |
2855 | { | |
2856 | // no GOT relocs needed for Local Exec. | |
2857 | } | |
2858 | else | |
2859 | gold_unreachable(); | |
2860 | } | |
42cacb20 DE |
2861 | break; |
2862 | ||
2863 | default: | |
2864 | unsupported_reloc_global(object, r_type, gsym); | |
2865 | break; | |
2866 | } | |
2867 | } | |
2868 | ||
6d03d481 ST |
2869 | // Process relocations for gc. |
2870 | ||
2871 | template<int size, bool big_endian> | |
2872 | void | |
2873 | Target_powerpc<size, big_endian>::gc_process_relocs( | |
d83ce4e3 AM |
2874 | Symbol_table* symtab, |
2875 | Layout* layout, | |
2876 | Sized_relobj_file<size, big_endian>* object, | |
2877 | unsigned int data_shndx, | |
2878 | unsigned int, | |
2879 | const unsigned char* prelocs, | |
2880 | size_t reloc_count, | |
2881 | Output_section* output_section, | |
2882 | bool needs_special_offset_handling, | |
2883 | size_t local_symbol_count, | |
2884 | const unsigned char* plocal_symbols) | |
6d03d481 ST |
2885 | { |
2886 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 2887 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
6d03d481 | 2888 | |
41cbeecc | 2889 | gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan, |
3ff2ccb0 | 2890 | typename Target_powerpc::Relocatable_size_for_reloc>( |
6d03d481 ST |
2891 | symtab, |
2892 | layout, | |
2893 | this, | |
2894 | object, | |
2895 | data_shndx, | |
2896 | prelocs, | |
2897 | reloc_count, | |
2898 | output_section, | |
2899 | needs_special_offset_handling, | |
2900 | local_symbol_count, | |
2901 | plocal_symbols); | |
2902 | } | |
2903 | ||
42cacb20 DE |
2904 | // Scan relocations for a section. |
2905 | ||
2906 | template<int size, bool big_endian> | |
2907 | void | |
2908 | Target_powerpc<size, big_endian>::scan_relocs( | |
d83ce4e3 AM |
2909 | Symbol_table* symtab, |
2910 | Layout* layout, | |
2911 | Sized_relobj_file<size, big_endian>* object, | |
2912 | unsigned int data_shndx, | |
2913 | unsigned int sh_type, | |
2914 | const unsigned char* prelocs, | |
2915 | size_t reloc_count, | |
2916 | Output_section* output_section, | |
2917 | bool needs_special_offset_handling, | |
2918 | size_t local_symbol_count, | |
2919 | const unsigned char* plocal_symbols) | |
42cacb20 DE |
2920 | { |
2921 | typedef Target_powerpc<size, big_endian> Powerpc; | |
2ea97941 | 2922 | typedef typename Target_powerpc<size, big_endian>::Scan Scan; |
42cacb20 DE |
2923 | |
2924 | if (sh_type == elfcpp::SHT_REL) | |
2925 | { | |
2926 | gold_error(_("%s: unsupported REL reloc section"), | |
2927 | object->name().c_str()); | |
2928 | return; | |
2929 | } | |
2930 | ||
cf43a2fe AM |
2931 | if (size == 32) |
2932 | { | |
2933 | static Output_data_space* sdata; | |
2934 | ||
2935 | // Define _SDA_BASE_ at the start of the .sdata section. | |
2936 | if (sdata == NULL) | |
2937 | { | |
2938 | // layout->find_output_section(".sdata") == NULL | |
2939 | sdata = new Output_data_space(4, "** sdata"); | |
2940 | Output_section* os | |
2941 | = layout->add_output_section_data(".sdata", 0, | |
2942 | elfcpp::SHF_ALLOC | |
2943 | | elfcpp::SHF_WRITE, | |
2944 | sdata, ORDER_SMALL_DATA, false); | |
2945 | symtab->define_in_output_data("_SDA_BASE_", NULL, | |
2946 | Symbol_table::PREDEFINED, | |
2947 | os, 32768, 0, elfcpp::STT_OBJECT, | |
2948 | elfcpp::STB_LOCAL, elfcpp::STV_HIDDEN, | |
2949 | 0, false, false); | |
2950 | } | |
2951 | } | |
42cacb20 | 2952 | |
2ea97941 | 2953 | gold::scan_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>( |
42cacb20 DE |
2954 | symtab, |
2955 | layout, | |
2956 | this, | |
2957 | object, | |
2958 | data_shndx, | |
2959 | prelocs, | |
2960 | reloc_count, | |
2961 | output_section, | |
2962 | needs_special_offset_handling, | |
2963 | local_symbol_count, | |
2964 | plocal_symbols); | |
2965 | } | |
2966 | ||
2967 | // Finalize the sections. | |
2968 | ||
2969 | template<int size, bool big_endian> | |
2970 | void | |
d5b40221 DK |
2971 | Target_powerpc<size, big_endian>::do_finalize_sections( |
2972 | Layout* layout, | |
f59f41f3 DK |
2973 | const Input_objects*, |
2974 | Symbol_table*) | |
42cacb20 DE |
2975 | { |
2976 | // Fill in some more dynamic tags. | |
ea715a34 ILT |
2977 | const Reloc_section* rel_plt = (this->plt_ == NULL |
2978 | ? NULL | |
2979 | : this->plt_->rel_plt()); | |
2980 | layout->add_target_dynamic_tags(false, this->plt_, rel_plt, | |
612a8d3d | 2981 | this->rela_dyn_, true, size == 32); |
42cacb20 | 2982 | |
c9269dff | 2983 | Output_data_dynamic* odyn = layout->dynamic_data(); |
cf43a2fe AM |
2984 | if (size == 32) |
2985 | { | |
dd93cd0a AM |
2986 | if (this->got_ != NULL) |
2987 | { | |
2988 | this->got_->finalize_data_size(); | |
2989 | odyn->add_section_plus_offset(elfcpp::DT_PPC_GOT, | |
2990 | this->got_, this->got_->g_o_t()); | |
2991 | } | |
cf43a2fe | 2992 | } |
c9269dff AM |
2993 | else |
2994 | { | |
dd93cd0a AM |
2995 | if (this->glink_ != NULL) |
2996 | { | |
2997 | this->glink_->finalize_data_size(); | |
2998 | odyn->add_section_plus_offset(elfcpp::DT_PPC64_GLINK, | |
2999 | this->glink_, | |
3000 | (this->glink_->pltresolve() | |
3001 | + this->glink_->pltresolve_size - 32)); | |
3002 | } | |
c9269dff | 3003 | } |
cf43a2fe | 3004 | |
42cacb20 DE |
3005 | // Emit any relocs we saved in an attempt to avoid generating COPY |
3006 | // relocs. | |
3007 | if (this->copy_relocs_.any_saved_relocs()) | |
3008 | this->copy_relocs_.emit(this->rela_dyn_section(layout)); | |
3009 | } | |
3010 | ||
3011 | // Perform a relocation. | |
3012 | ||
3013 | template<int size, bool big_endian> | |
3014 | inline bool | |
3015 | Target_powerpc<size, big_endian>::Relocate::relocate( | |
d83ce4e3 AM |
3016 | const Relocate_info<size, big_endian>* relinfo, |
3017 | Target_powerpc* target, | |
3018 | Output_section* os, | |
3019 | size_t relnum, | |
3020 | const elfcpp::Rela<size, big_endian>& rela, | |
3021 | unsigned int r_type, | |
3022 | const Sized_symbol<size>* gsym, | |
3023 | const Symbol_value<size>* psymval, | |
3024 | unsigned char* view, | |
c9269dff AM |
3025 | Address address, |
3026 | section_size_type view_size) | |
42cacb20 | 3027 | { |
dd93cd0a AM |
3028 | |
3029 | bool is_tls_call = ((r_type == elfcpp::R_POWERPC_REL24 | |
3030 | || r_type == elfcpp::R_PPC_PLTREL24) | |
3031 | && gsym != NULL | |
3032 | && strcmp(gsym->name(), "__tls_get_addr") == 0); | |
3033 | enum skip_tls last_tls = this->call_tls_get_addr_; | |
3034 | this->call_tls_get_addr_ = CALL_NOT_EXPECTED; | |
3035 | if (is_tls_call) | |
3036 | { | |
3037 | if (last_tls == CALL_NOT_EXPECTED) | |
3038 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3039 | _("__tls_get_addr call lacks marker reloc")); | |
3040 | else if (last_tls == CALL_SKIP) | |
3041 | return false; | |
3042 | } | |
3043 | else if (last_tls != CALL_NOT_EXPECTED) | |
3044 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3045 | _("missing expected __tls_get_addr call")); | |
3046 | ||
42cacb20 | 3047 | typedef Powerpc_relocate_functions<size, big_endian> Reloc; |
dd93cd0a | 3048 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Insn; |
cf43a2fe AM |
3049 | const Powerpc_relobj<size, big_endian>* const object |
3050 | = static_cast<const Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
dd93cd0a AM |
3051 | Address value = 0; |
3052 | bool has_plt_value = false; | |
3053 | if (gsym != NULL | |
3054 | && use_plt_offset<size>(gsym, Scan::get_reference_flags(r_type))) | |
3055 | { | |
3056 | const Output_data_glink<size, big_endian>* glink | |
3057 | = target->glink_section(); | |
3058 | unsigned int glink_index = glink->find_entry(gsym, rela, object); | |
3059 | value = glink->address() + glink_index * glink->glink_entry_size(); | |
3060 | has_plt_value = true; | |
3061 | } | |
cf43a2fe AM |
3062 | |
3063 | if (r_type == elfcpp::R_POWERPC_GOT16 | |
3064 | || r_type == elfcpp::R_POWERPC_GOT16_LO | |
3065 | || r_type == elfcpp::R_POWERPC_GOT16_HI | |
3066 | || r_type == elfcpp::R_POWERPC_GOT16_HA | |
3067 | || r_type == elfcpp::R_PPC64_GOT16_DS | |
3068 | || r_type == elfcpp::R_PPC64_GOT16_LO_DS) | |
42cacb20 | 3069 | { |
cf43a2fe AM |
3070 | if (gsym != NULL) |
3071 | { | |
3072 | gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); | |
3073 | value = gsym->got_offset(GOT_TYPE_STANDARD); | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3078 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); | |
3079 | value = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); | |
3080 | } | |
dd93cd0a | 3081 | value -= target->got_section()->got_base_offset(object); |
cf43a2fe AM |
3082 | } |
3083 | else if (r_type == elfcpp::R_PPC64_TOC) | |
3084 | { | |
c9269dff | 3085 | value = (target->got_section()->output_section()->address() |
dd93cd0a | 3086 | + object->toc_base_offset()); |
cf43a2fe AM |
3087 | } |
3088 | else if (gsym != NULL | |
3089 | && (r_type == elfcpp::R_POWERPC_REL24 | |
3090 | || r_type == elfcpp::R_PPC_PLTREL24) | |
dd93cd0a | 3091 | && has_plt_value) |
cf43a2fe | 3092 | { |
c9269dff AM |
3093 | if (size == 64) |
3094 | { | |
3095 | typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; | |
3096 | Valtype* wv = reinterpret_cast<Valtype*>(view); | |
3097 | bool can_plt_call = false; | |
3098 | if (rela.get_r_offset() + 8 <= view_size) | |
3099 | { | |
3100 | Valtype insn2 = elfcpp::Swap<32, big_endian>::readval(wv + 1); | |
3101 | if (insn2 == nop | |
3102 | || insn2 == cror_15_15_15 || insn2 == cror_31_31_31) | |
3103 | { | |
3104 | elfcpp::Swap<32, big_endian>::writeval(wv + 1, ld_2_1 + 40); | |
3105 | can_plt_call = true; | |
3106 | } | |
3107 | } | |
3108 | if (!can_plt_call) | |
3109 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), | |
3110 | _("call lacks nop, can't restore toc")); | |
3111 | } | |
cf43a2fe | 3112 | } |
dd93cd0a AM |
3113 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 |
3114 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO | |
3115 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HI | |
3116 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_HA) | |
3117 | { | |
3118 | // First instruction of a global dynamic sequence, arg setup insn. | |
3119 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
3120 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
3121 | enum Got_type got_type = GOT_TYPE_STANDARD; | |
3122 | if (tls_type == tls::TLSOPT_NONE) | |
3123 | got_type = GOT_TYPE_TLSGD; | |
3124 | else if (tls_type == tls::TLSOPT_TO_IE) | |
3125 | got_type = GOT_TYPE_TPREL; | |
3126 | if (got_type != GOT_TYPE_STANDARD) | |
3127 | { | |
3128 | if (gsym != NULL) | |
3129 | { | |
3130 | gold_assert(gsym->has_got_offset(got_type)); | |
3131 | value = gsym->got_offset(got_type); | |
3132 | } | |
3133 | else | |
3134 | { | |
3135 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3136 | gold_assert(object->local_has_got_offset(r_sym, got_type)); | |
3137 | value = object->local_got_offset(r_sym, got_type); | |
3138 | } | |
3139 | value -= target->got_section()->got_base_offset(object); | |
3140 | } | |
3141 | if (tls_type == tls::TLSOPT_TO_IE) | |
3142 | { | |
3143 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
3144 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
3145 | { | |
3146 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3147 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
3148 | insn &= (1 << 26) - (1 << 16); // extract rt,ra from addi | |
3149 | if (size == 32) | |
3150 | insn |= 32 << 26; // lwz | |
3151 | else | |
3152 | insn |= 58 << 26; // ld | |
3153 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3154 | } | |
3155 | r_type += (elfcpp::R_POWERPC_GOT_TPREL16 | |
3156 | - elfcpp::R_POWERPC_GOT_TLSGD16); | |
3157 | } | |
3158 | else if (tls_type == tls::TLSOPT_TO_LE) | |
3159 | { | |
3160 | if (r_type == elfcpp::R_POWERPC_GOT_TLSGD16 | |
3161 | || r_type == elfcpp::R_POWERPC_GOT_TLSGD16_LO) | |
3162 | { | |
3163 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3164 | Insn insn = addis_3_13; | |
3165 | if (size == 32) | |
3166 | insn = addis_3_2; | |
3167 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3168 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
3169 | value = psymval->value(object, rela.get_r_addend()); | |
3170 | } | |
3171 | else | |
3172 | { | |
3173 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3174 | Insn insn = nop; | |
3175 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3176 | r_type = elfcpp::R_POWERPC_NONE; | |
3177 | } | |
3178 | } | |
3179 | } | |
3180 | else if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
3181 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO | |
3182 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HI | |
3183 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_HA) | |
3184 | { | |
3185 | // First instruction of a local dynamic sequence, arg setup insn. | |
3186 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
3187 | if (tls_type == tls::TLSOPT_NONE) | |
3188 | { | |
3189 | value = target->tlsld_got_offset(); | |
3190 | value -= target->got_section()->got_base_offset(object); | |
3191 | } | |
3192 | else | |
3193 | { | |
3194 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
3195 | if (r_type == elfcpp::R_POWERPC_GOT_TLSLD16 | |
3196 | || r_type == elfcpp::R_POWERPC_GOT_TLSLD16_LO) | |
3197 | { | |
3198 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3199 | Insn insn = addis_3_13; | |
3200 | if (size == 32) | |
3201 | insn = addis_3_2; | |
3202 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3203 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
3204 | value = relinfo->layout->tls_segment()->vaddr() + dtp_offset; | |
3205 | } | |
3206 | else | |
3207 | { | |
3208 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3209 | Insn insn = nop; | |
3210 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3211 | r_type = elfcpp::R_POWERPC_NONE; | |
3212 | } | |
3213 | } | |
3214 | } | |
3215 | else if (r_type == elfcpp::R_POWERPC_GOT_DTPREL16 | |
3216 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_LO | |
3217 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HI | |
3218 | || r_type == elfcpp::R_POWERPC_GOT_DTPREL16_HA) | |
3219 | { | |
3220 | // Accesses relative to a local dynamic sequence address, | |
3221 | // no optimisation here. | |
3222 | if (gsym != NULL) | |
3223 | { | |
3224 | gold_assert(gsym->has_got_offset(GOT_TYPE_DTPREL)); | |
3225 | value = gsym->got_offset(GOT_TYPE_DTPREL); | |
3226 | } | |
3227 | else | |
3228 | { | |
3229 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3230 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_DTPREL)); | |
3231 | value = object->local_got_offset(r_sym, GOT_TYPE_DTPREL); | |
3232 | } | |
3233 | value -= target->got_section()->got_base_offset(object); | |
3234 | } | |
3235 | else if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
3236 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO | |
3237 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HI | |
3238 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_HA) | |
3239 | { | |
3240 | // First instruction of initial exec sequence. | |
3241 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
3242 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
3243 | if (tls_type == tls::TLSOPT_NONE) | |
3244 | { | |
3245 | if (gsym != NULL) | |
3246 | { | |
3247 | gold_assert(gsym->has_got_offset(GOT_TYPE_TPREL)); | |
3248 | value = gsym->got_offset(GOT_TYPE_TPREL); | |
3249 | } | |
3250 | else | |
3251 | { | |
3252 | unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); | |
3253 | gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_TPREL)); | |
3254 | value = object->local_got_offset(r_sym, GOT_TYPE_TPREL); | |
3255 | } | |
3256 | value -= target->got_section()->got_base_offset(object); | |
3257 | } | |
3258 | else | |
3259 | { | |
3260 | gold_assert(tls_type == tls::TLSOPT_TO_LE); | |
3261 | if (r_type == elfcpp::R_POWERPC_GOT_TPREL16 | |
3262 | || r_type == elfcpp::R_POWERPC_GOT_TPREL16_LO) | |
3263 | { | |
3264 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3265 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
3266 | insn &= (1 << 26) - (1 << 21); // extract rt from ld | |
3267 | if (size == 32) | |
3268 | insn |= addis_0_2; | |
3269 | else | |
3270 | insn |= addis_0_13; | |
3271 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3272 | r_type = elfcpp::R_POWERPC_TPREL16_HA; | |
3273 | value = psymval->value(object, rela.get_r_addend()); | |
3274 | } | |
3275 | else | |
3276 | { | |
3277 | Insn* iview = reinterpret_cast<Insn*>(view - 2 * big_endian); | |
3278 | Insn insn = nop; | |
3279 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3280 | r_type = elfcpp::R_POWERPC_NONE; | |
3281 | } | |
3282 | } | |
3283 | } | |
3284 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSGD) | |
3285 | || (size == 32 && r_type == elfcpp::R_PPC_TLSGD)) | |
3286 | { | |
3287 | // Second instruction of a global dynamic sequence, | |
3288 | // the __tls_get_addr call | |
3289 | this->call_tls_get_addr_ = CALL_EXPECTED; | |
3290 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
3291 | const tls::Tls_optimization tls_type = target->optimize_tls_gd(final); | |
3292 | if (tls_type != tls::TLSOPT_NONE) | |
3293 | { | |
3294 | if (tls_type == tls::TLSOPT_TO_IE) | |
3295 | { | |
3296 | Insn* iview = reinterpret_cast<Insn*>(view); | |
3297 | Insn insn = add_3_3_13; | |
3298 | if (size == 32) | |
3299 | insn = add_3_3_2; | |
3300 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3301 | r_type = elfcpp::R_POWERPC_NONE; | |
3302 | } | |
3303 | else | |
3304 | { | |
3305 | Insn* iview = reinterpret_cast<Insn*>(view); | |
3306 | Insn insn = addi_3_3; | |
3307 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3308 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
3309 | view += 2 * big_endian; | |
3310 | value = psymval->value(object, rela.get_r_addend()); | |
3311 | } | |
3312 | this->call_tls_get_addr_ = CALL_SKIP; | |
3313 | } | |
3314 | } | |
3315 | else if ((size == 64 && r_type == elfcpp::R_PPC64_TLSLD) | |
3316 | || (size == 32 && r_type == elfcpp::R_PPC_TLSLD)) | |
3317 | { | |
3318 | // Second instruction of a local dynamic sequence, | |
3319 | // the __tls_get_addr call | |
3320 | this->call_tls_get_addr_ = CALL_EXPECTED; | |
3321 | const tls::Tls_optimization tls_type = target->optimize_tls_ld(); | |
3322 | if (tls_type == tls::TLSOPT_TO_LE) | |
3323 | { | |
3324 | Insn* iview = reinterpret_cast<Insn*>(view); | |
3325 | Insn insn = addi_3_3; | |
3326 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3327 | this->call_tls_get_addr_ = CALL_SKIP; | |
3328 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
3329 | view += 2 * big_endian; | |
3330 | value = relinfo->layout->tls_segment()->vaddr() + dtp_offset; | |
3331 | } | |
3332 | } | |
3333 | else if (r_type == elfcpp::R_POWERPC_TLS) | |
3334 | { | |
3335 | // Second instruction of an initial exec sequence | |
3336 | const bool final = gsym == NULL || gsym->final_value_is_known(); | |
3337 | const tls::Tls_optimization tls_type = target->optimize_tls_ie(final); | |
3338 | if (tls_type == tls::TLSOPT_TO_LE) | |
3339 | { | |
3340 | Insn* iview = reinterpret_cast<Insn*>(view); | |
3341 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
3342 | unsigned int reg = size == 32 ? 2 : 13; | |
3343 | insn = at_tls_transform(insn, reg); | |
3344 | gold_assert(insn != 0); | |
3345 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3346 | r_type = elfcpp::R_POWERPC_TPREL16_LO; | |
3347 | view += 2 * big_endian; | |
3348 | value = psymval->value(object, rela.get_r_addend()); | |
3349 | } | |
3350 | } | |
cf43a2fe AM |
3351 | else |
3352 | { | |
dd93cd0a | 3353 | Address addend = 0; |
cf43a2fe AM |
3354 | if (r_type != elfcpp::R_PPC_PLTREL24) |
3355 | addend = rela.get_r_addend(); | |
dd93cd0a AM |
3356 | if (size == 64 || !has_plt_value) |
3357 | value = psymval->value(object, addend); | |
3358 | if (size == 64 && is_branch_reloc(r_type)) | |
c9269dff | 3359 | { |
dd93cd0a AM |
3360 | // If the symbol is defined in an opd section, ie. is a function |
3361 | // descriptor, use the function descriptor code entry address | |
c9269dff AM |
3362 | Powerpc_relobj<size, big_endian>* symobj = const_cast |
3363 | <Powerpc_relobj<size, big_endian>*>(object); | |
3364 | if (gsym != NULL) | |
3365 | symobj = static_cast | |
3366 | <Powerpc_relobj<size, big_endian>*>(gsym->object()); | |
3367 | unsigned int shndx = symobj->opd_shndx(); | |
3368 | Address opd_addr = symobj->get_output_section_offset(shndx); | |
3369 | gold_assert(opd_addr != invalid_address); | |
3370 | opd_addr += symobj->output_section(shndx)->address(); | |
3371 | if (value >= opd_addr | |
3372 | && value < opd_addr + symobj->section_size(shndx)) | |
3373 | { | |
3374 | Address sec_off; | |
3375 | symobj->get_opd_ent(value - opd_addr, &shndx, &sec_off); | |
3376 | Address sec_addr = symobj->get_output_section_offset(shndx); | |
3377 | gold_assert(sec_addr != invalid_address); | |
3378 | sec_addr += symobj->output_section(shndx)->address(); | |
3379 | value = sec_addr + sec_off; | |
3380 | } | |
3381 | } | |
42cacb20 DE |
3382 | } |
3383 | ||
42cacb20 DE |
3384 | switch (r_type) |
3385 | { | |
dd93cd0a AM |
3386 | case elfcpp::R_PPC64_REL64: |
3387 | case elfcpp::R_POWERPC_REL32: | |
3388 | case elfcpp::R_POWERPC_REL24: | |
3389 | case elfcpp::R_PPC_PLTREL24: | |
3390 | case elfcpp::R_PPC_LOCAL24PC: | |
3391 | case elfcpp::R_POWERPC_REL16: | |
3392 | case elfcpp::R_POWERPC_REL16_LO: | |
3393 | case elfcpp::R_POWERPC_REL16_HI: | |
3394 | case elfcpp::R_POWERPC_REL16_HA: | |
3395 | case elfcpp::R_POWERPC_REL14: | |
3396 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3397 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3398 | value -= address; | |
3399 | break; | |
3400 | ||
42cacb20 DE |
3401 | case elfcpp::R_PPC64_TOC16: |
3402 | case elfcpp::R_PPC64_TOC16_LO: | |
3403 | case elfcpp::R_PPC64_TOC16_HI: | |
3404 | case elfcpp::R_PPC64_TOC16_HA: | |
3405 | case elfcpp::R_PPC64_TOC16_DS: | |
3406 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe | 3407 | // Subtract the TOC base address. |
c9269dff | 3408 | value -= (target->got_section()->output_section()->address() |
dd93cd0a | 3409 | + object->toc_base_offset()); |
42cacb20 DE |
3410 | break; |
3411 | ||
cf43a2fe AM |
3412 | case elfcpp::R_POWERPC_SECTOFF: |
3413 | case elfcpp::R_POWERPC_SECTOFF_LO: | |
3414 | case elfcpp::R_POWERPC_SECTOFF_HI: | |
3415 | case elfcpp::R_POWERPC_SECTOFF_HA: | |
3416 | case elfcpp::R_PPC64_SECTOFF_DS: | |
3417 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
3418 | if (os != NULL) | |
3419 | value -= os->address(); | |
42cacb20 DE |
3420 | break; |
3421 | ||
dd93cd0a AM |
3422 | case elfcpp::R_PPC64_TPREL16_DS: |
3423 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
3424 | if (size != 64) | |
3425 | // R_PPC_TLSGD and R_PPC_TLSLD | |
3426 | break; | |
3427 | case elfcpp::R_POWERPC_TPREL16: | |
3428 | case elfcpp::R_POWERPC_TPREL16_LO: | |
3429 | case elfcpp::R_POWERPC_TPREL16_HI: | |
3430 | case elfcpp::R_POWERPC_TPREL16_HA: | |
3431 | case elfcpp::R_POWERPC_TPREL: | |
3432 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
3433 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
3434 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
3435 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
3436 | // tls symbol values are relative to tls_segment()->vaddr() | |
3437 | value -= tp_offset; | |
3438 | break; | |
3439 | ||
3440 | case elfcpp::R_PPC64_DTPREL16_DS: | |
3441 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
3442 | case elfcpp::R_PPC64_DTPREL16_HIGHER: | |
3443 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: | |
3444 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: | |
3445 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: | |
3446 | if (size != 64) | |
3447 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16, R_PPC_EMB_NADDR16_LO | |
3448 | // R_PPC_EMB_NADDR16_HI, R_PPC_EMB_NADDR16_HA, R_PPC_EMB_SDAI16 | |
3449 | break; | |
3450 | case elfcpp::R_POWERPC_DTPREL16: | |
3451 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
3452 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
3453 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
3454 | case elfcpp::R_POWERPC_DTPREL: | |
3455 | // tls symbol values are relative to tls_segment()->vaddr() | |
3456 | value -= dtp_offset; | |
3457 | break; | |
3458 | ||
42cacb20 DE |
3459 | default: |
3460 | break; | |
3461 | } | |
3462 | ||
dd93cd0a | 3463 | Insn branch_bit = 0; |
42cacb20 DE |
3464 | switch (r_type) |
3465 | { | |
dd93cd0a AM |
3466 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: |
3467 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3468 | branch_bit = 1 << 21; | |
3469 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3470 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3471 | { | |
3472 | Insn* iview = reinterpret_cast<Insn*>(view); | |
3473 | Insn insn = elfcpp::Swap<32, big_endian>::readval(iview); | |
3474 | insn &= ~(1 << 21); | |
3475 | insn |= branch_bit; | |
3476 | if (this->is_isa_v2) | |
3477 | { | |
3478 | // Set 'a' bit. This is 0b00010 in BO field for branch | |
3479 | // on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
3480 | // for branch on CTR insns (BO == 1a00t or 1a01t). | |
3481 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
3482 | insn |= 0x02 << 21; | |
3483 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
3484 | insn |= 0x08 << 21; | |
3485 | else | |
3486 | break; | |
3487 | } | |
3488 | else | |
3489 | { | |
3490 | // Invert 'y' bit if not the default. | |
3491 | if (static_cast<Signed_address>(value) < 0) | |
3492 | insn ^= 1 << 21; | |
3493 | } | |
3494 | elfcpp::Swap<32, big_endian>::writeval(iview, insn); | |
3495 | } | |
3496 | break; | |
3497 | ||
3498 | default: | |
3499 | break; | |
3500 | } | |
3501 | ||
3502 | enum Reloc::overflow_check overflow = Reloc::check_none; | |
3503 | switch (r_type) | |
3504 | { | |
3505 | case elfcpp::R_POWERPC_ADDR32: | |
3506 | case elfcpp::R_POWERPC_UADDR32: | |
3507 | if (size == 64) | |
3508 | overflow = Reloc::check_bitfield; | |
42cacb20 DE |
3509 | break; |
3510 | ||
3511 | case elfcpp::R_POWERPC_REL32: | |
dd93cd0a AM |
3512 | if (size == 64) |
3513 | overflow = Reloc::check_signed; | |
3514 | break; | |
3515 | ||
3516 | case elfcpp::R_POWERPC_ADDR24: | |
3517 | case elfcpp::R_POWERPC_ADDR16: | |
3518 | case elfcpp::R_POWERPC_UADDR16: | |
3519 | case elfcpp::R_PPC64_ADDR16_DS: | |
3520 | case elfcpp::R_POWERPC_ADDR14: | |
3521 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3522 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3523 | overflow = Reloc::check_bitfield; | |
42cacb20 DE |
3524 | break; |
3525 | ||
3526 | case elfcpp::R_POWERPC_REL24: | |
42cacb20 | 3527 | case elfcpp::R_PPC_PLTREL24: |
cf43a2fe | 3528 | case elfcpp::R_PPC_LOCAL24PC: |
dd93cd0a AM |
3529 | case elfcpp::R_POWERPC_REL16: |
3530 | case elfcpp::R_PPC64_TOC16: | |
3531 | case elfcpp::R_POWERPC_GOT16: | |
3532 | case elfcpp::R_POWERPC_SECTOFF: | |
3533 | case elfcpp::R_POWERPC_TPREL16: | |
3534 | case elfcpp::R_POWERPC_DTPREL16: | |
3535 | case elfcpp::R_PPC64_TPREL16_DS: | |
3536 | case elfcpp::R_PPC64_DTPREL16_DS: | |
3537 | case elfcpp::R_PPC64_TOC16_DS: | |
3538 | case elfcpp::R_PPC64_GOT16_DS: | |
3539 | case elfcpp::R_PPC64_SECTOFF_DS: | |
3540 | case elfcpp::R_POWERPC_REL14: | |
3541 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3542 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3543 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
3544 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
3545 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
3546 | case elfcpp::R_POWERPC_GOT_DTPREL16: | |
3547 | overflow = Reloc::check_signed; | |
42cacb20 | 3548 | break; |
dd93cd0a | 3549 | } |
42cacb20 | 3550 | |
dd93cd0a AM |
3551 | switch (r_type) |
3552 | { | |
3553 | case elfcpp::R_POWERPC_NONE: | |
3554 | case elfcpp::R_POWERPC_TLS: | |
3555 | case elfcpp::R_POWERPC_GNU_VTINHERIT: | |
3556 | case elfcpp::R_POWERPC_GNU_VTENTRY: | |
3557 | case elfcpp::R_PPC_EMB_MRKREF: | |
42cacb20 DE |
3558 | break; |
3559 | ||
3560 | case elfcpp::R_PPC64_ADDR64: | |
dd93cd0a | 3561 | case elfcpp::R_PPC64_REL64: |
cf43a2fe | 3562 | case elfcpp::R_PPC64_TOC: |
dd93cd0a AM |
3563 | Reloc::addr64(view, value); |
3564 | break; | |
3565 | ||
3566 | case elfcpp::R_POWERPC_TPREL: | |
3567 | case elfcpp::R_POWERPC_DTPREL: | |
3568 | if (size == 64) | |
3569 | Reloc::addr64(view, value); | |
3570 | else | |
3571 | Reloc::addr32(view, value, overflow); | |
3572 | break; | |
3573 | ||
3574 | case elfcpp::R_PPC64_UADDR64: | |
3575 | Reloc::addr64_u(view, value); | |
42cacb20 DE |
3576 | break; |
3577 | ||
3578 | case elfcpp::R_POWERPC_ADDR32: | |
dd93cd0a AM |
3579 | case elfcpp::R_POWERPC_REL32: |
3580 | Reloc::addr32(view, value, overflow); | |
3581 | break; | |
3582 | ||
3583 | case elfcpp::R_POWERPC_UADDR32: | |
3584 | Reloc::addr32_u(view, value, overflow); | |
3585 | break; | |
3586 | ||
3587 | case elfcpp::R_POWERPC_ADDR24: | |
3588 | case elfcpp::R_POWERPC_REL24: | |
3589 | case elfcpp::R_PPC_PLTREL24: | |
3590 | case elfcpp::R_PPC_LOCAL24PC: | |
3591 | Reloc::addr24(view, value, overflow); | |
42cacb20 DE |
3592 | break; |
3593 | ||
dd93cd0a AM |
3594 | case elfcpp::R_POWERPC_GOT_DTPREL16: |
3595 | case elfcpp::R_POWERPC_GOT_DTPREL16_LO: | |
3596 | if (size == 64) | |
3597 | { | |
3598 | Reloc::addr16_ds(view, value, overflow); | |
3599 | break; | |
3600 | } | |
cf43a2fe | 3601 | case elfcpp::R_POWERPC_ADDR16: |
dd93cd0a | 3602 | case elfcpp::R_POWERPC_REL16: |
cf43a2fe | 3603 | case elfcpp::R_PPC64_TOC16: |
42cacb20 | 3604 | case elfcpp::R_POWERPC_GOT16: |
cf43a2fe | 3605 | case elfcpp::R_POWERPC_SECTOFF: |
dd93cd0a AM |
3606 | case elfcpp::R_POWERPC_TPREL16: |
3607 | case elfcpp::R_POWERPC_DTPREL16: | |
3608 | case elfcpp::R_POWERPC_GOT_TLSGD16: | |
3609 | case elfcpp::R_POWERPC_GOT_TLSLD16: | |
3610 | case elfcpp::R_POWERPC_GOT_TPREL16: | |
cf43a2fe | 3611 | case elfcpp::R_POWERPC_ADDR16_LO: |
dd93cd0a | 3612 | case elfcpp::R_POWERPC_REL16_LO: |
cf43a2fe | 3613 | case elfcpp::R_PPC64_TOC16_LO: |
42cacb20 | 3614 | case elfcpp::R_POWERPC_GOT16_LO: |
cf43a2fe | 3615 | case elfcpp::R_POWERPC_SECTOFF_LO: |
dd93cd0a AM |
3616 | case elfcpp::R_POWERPC_TPREL16_LO: |
3617 | case elfcpp::R_POWERPC_DTPREL16_LO: | |
3618 | case elfcpp::R_POWERPC_GOT_TLSGD16_LO: | |
3619 | case elfcpp::R_POWERPC_GOT_TLSLD16_LO: | |
3620 | case elfcpp::R_POWERPC_GOT_TPREL16_LO: | |
3621 | Reloc::addr16(view, value, overflow); | |
3622 | break; | |
3623 | ||
3624 | case elfcpp::R_POWERPC_UADDR16: | |
3625 | Reloc::addr16_u(view, value, overflow); | |
42cacb20 DE |
3626 | break; |
3627 | ||
cf43a2fe | 3628 | case elfcpp::R_POWERPC_ADDR16_HI: |
dd93cd0a | 3629 | case elfcpp::R_POWERPC_REL16_HI: |
cf43a2fe | 3630 | case elfcpp::R_PPC64_TOC16_HI: |
42cacb20 | 3631 | case elfcpp::R_POWERPC_GOT16_HI: |
cf43a2fe | 3632 | case elfcpp::R_POWERPC_SECTOFF_HI: |
dd93cd0a AM |
3633 | case elfcpp::R_POWERPC_TPREL16_HI: |
3634 | case elfcpp::R_POWERPC_DTPREL16_HI: | |
3635 | case elfcpp::R_POWERPC_GOT_TLSGD16_HI: | |
3636 | case elfcpp::R_POWERPC_GOT_TLSLD16_HI: | |
3637 | case elfcpp::R_POWERPC_GOT_TPREL16_HI: | |
3638 | case elfcpp::R_POWERPC_GOT_DTPREL16_HI: | |
3639 | Reloc::addr16_hi(view, value); | |
42cacb20 DE |
3640 | break; |
3641 | ||
cf43a2fe | 3642 | case elfcpp::R_POWERPC_ADDR16_HA: |
dd93cd0a | 3643 | case elfcpp::R_POWERPC_REL16_HA: |
cf43a2fe | 3644 | case elfcpp::R_PPC64_TOC16_HA: |
42cacb20 | 3645 | case elfcpp::R_POWERPC_GOT16_HA: |
cf43a2fe | 3646 | case elfcpp::R_POWERPC_SECTOFF_HA: |
dd93cd0a AM |
3647 | case elfcpp::R_POWERPC_TPREL16_HA: |
3648 | case elfcpp::R_POWERPC_DTPREL16_HA: | |
3649 | case elfcpp::R_POWERPC_GOT_TLSGD16_HA: | |
3650 | case elfcpp::R_POWERPC_GOT_TLSLD16_HA: | |
3651 | case elfcpp::R_POWERPC_GOT_TPREL16_HA: | |
3652 | case elfcpp::R_POWERPC_GOT_DTPREL16_HA: | |
3653 | Reloc::addr16_ha(view, value); | |
42cacb20 DE |
3654 | break; |
3655 | ||
dd93cd0a AM |
3656 | case elfcpp::R_PPC64_DTPREL16_HIGHER: |
3657 | if (size == 32) | |
3658 | // R_PPC_EMB_NADDR16_LO | |
3659 | goto unsupp; | |
3660 | case elfcpp::R_PPC64_ADDR16_HIGHER: | |
3661 | case elfcpp::R_PPC64_TPREL16_HIGHER: | |
3662 | Reloc::addr16_hi2(view, value); | |
42cacb20 DE |
3663 | break; |
3664 | ||
dd93cd0a AM |
3665 | case elfcpp::R_PPC64_DTPREL16_HIGHERA: |
3666 | if (size == 32) | |
3667 | // R_PPC_EMB_NADDR16_HI | |
3668 | goto unsupp; | |
3669 | case elfcpp::R_PPC64_ADDR16_HIGHERA: | |
3670 | case elfcpp::R_PPC64_TPREL16_HIGHERA: | |
3671 | Reloc::addr16_ha2(view, value); | |
42cacb20 DE |
3672 | break; |
3673 | ||
dd93cd0a AM |
3674 | case elfcpp::R_PPC64_DTPREL16_HIGHEST: |
3675 | if (size == 32) | |
3676 | // R_PPC_EMB_NADDR16_HA | |
3677 | goto unsupp; | |
3678 | case elfcpp::R_PPC64_ADDR16_HIGHEST: | |
3679 | case elfcpp::R_PPC64_TPREL16_HIGHEST: | |
3680 | Reloc::addr16_hi3(view, value); | |
42cacb20 DE |
3681 | break; |
3682 | ||
dd93cd0a AM |
3683 | case elfcpp::R_PPC64_DTPREL16_HIGHESTA: |
3684 | if (size == 32) | |
3685 | // R_PPC_EMB_SDAI16 | |
3686 | goto unsupp; | |
3687 | case elfcpp::R_PPC64_ADDR16_HIGHESTA: | |
3688 | case elfcpp::R_PPC64_TPREL16_HIGHESTA: | |
3689 | Reloc::addr16_ha3(view, value); | |
3690 | break; | |
3691 | ||
3692 | case elfcpp::R_PPC64_DTPREL16_DS: | |
3693 | case elfcpp::R_PPC64_DTPREL16_LO_DS: | |
3694 | if (size == 32) | |
3695 | // R_PPC_EMB_NADDR32, R_PPC_EMB_NADDR16 | |
3696 | goto unsupp; | |
3697 | case elfcpp::R_PPC64_TPREL16_DS: | |
3698 | case elfcpp::R_PPC64_TPREL16_LO_DS: | |
3699 | if (size == 32) | |
3700 | // R_PPC_TLSGD, R_PPC_TLSLD | |
3701 | break; | |
cf43a2fe AM |
3702 | case elfcpp::R_PPC64_ADDR16_DS: |
3703 | case elfcpp::R_PPC64_ADDR16_LO_DS: | |
42cacb20 DE |
3704 | case elfcpp::R_PPC64_TOC16_DS: |
3705 | case elfcpp::R_PPC64_TOC16_LO_DS: | |
cf43a2fe AM |
3706 | case elfcpp::R_PPC64_GOT16_DS: |
3707 | case elfcpp::R_PPC64_GOT16_LO_DS: | |
3708 | case elfcpp::R_PPC64_SECTOFF_DS: | |
3709 | case elfcpp::R_PPC64_SECTOFF_LO_DS: | |
dd93cd0a AM |
3710 | Reloc::addr16_ds(view, value, overflow); |
3711 | break; | |
3712 | ||
3713 | case elfcpp::R_POWERPC_ADDR14: | |
3714 | case elfcpp::R_POWERPC_ADDR14_BRTAKEN: | |
3715 | case elfcpp::R_POWERPC_ADDR14_BRNTAKEN: | |
3716 | case elfcpp::R_POWERPC_REL14: | |
3717 | case elfcpp::R_POWERPC_REL14_BRTAKEN: | |
3718 | case elfcpp::R_POWERPC_REL14_BRNTAKEN: | |
3719 | Reloc::addr14(view, value, overflow); | |
42cacb20 DE |
3720 | break; |
3721 | ||
3722 | case elfcpp::R_POWERPC_COPY: | |
3723 | case elfcpp::R_POWERPC_GLOB_DAT: | |
3724 | case elfcpp::R_POWERPC_JMP_SLOT: | |
3725 | case elfcpp::R_POWERPC_RELATIVE: | |
42cacb20 | 3726 | case elfcpp::R_POWERPC_DTPMOD: |
dd93cd0a AM |
3727 | case elfcpp::R_PPC64_JMP_IREL: |
3728 | case elfcpp::R_POWERPC_IRELATIVE: | |
42cacb20 DE |
3729 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3730 | _("unexpected reloc %u in object file"), | |
3731 | r_type); | |
3732 | break; | |
3733 | ||
dd93cd0a AM |
3734 | case elfcpp::R_PPC_EMB_SDA21: |
3735 | if (size == 32) | |
3736 | goto unsupp; | |
3737 | else | |
3738 | { | |
3739 | // R_PPC64_TOCSAVE. For the time being this can be ignored. | |
3740 | } | |
3741 | break; | |
3742 | ||
3743 | case elfcpp::R_PPC_EMB_SDA2I16: | |
3744 | case elfcpp::R_PPC_EMB_SDA2REL: | |
3745 | if (size == 32) | |
3746 | goto unsupp; | |
3747 | // R_PPC64_TLSGD, R_PPC64_TLSLD | |
6ce78956 AM |
3748 | break; |
3749 | ||
dd93cd0a AM |
3750 | case elfcpp::R_POWERPC_PLT32: |
3751 | case elfcpp::R_POWERPC_PLTREL32: | |
3752 | case elfcpp::R_POWERPC_PLT16_LO: | |
3753 | case elfcpp::R_POWERPC_PLT16_HI: | |
3754 | case elfcpp::R_POWERPC_PLT16_HA: | |
3755 | case elfcpp::R_PPC_SDAREL16: | |
3756 | case elfcpp::R_POWERPC_ADDR30: | |
3757 | case elfcpp::R_PPC64_PLT64: | |
3758 | case elfcpp::R_PPC64_PLTREL64: | |
3759 | case elfcpp::R_PPC64_PLTGOT16: | |
3760 | case elfcpp::R_PPC64_PLTGOT16_LO: | |
3761 | case elfcpp::R_PPC64_PLTGOT16_HI: | |
3762 | case elfcpp::R_PPC64_PLTGOT16_HA: | |
3763 | case elfcpp::R_PPC64_PLT16_LO_DS: | |
3764 | case elfcpp::R_PPC64_PLTGOT16_DS: | |
3765 | case elfcpp::R_PPC64_PLTGOT16_LO_DS: | |
3766 | case elfcpp::R_PPC_EMB_RELSEC16: | |
3767 | case elfcpp::R_PPC_EMB_RELST_LO: | |
3768 | case elfcpp::R_PPC_EMB_RELST_HI: | |
3769 | case elfcpp::R_PPC_EMB_RELST_HA: | |
3770 | case elfcpp::R_PPC_EMB_BIT_FLD: | |
3771 | case elfcpp::R_PPC_EMB_RELSDA: | |
3772 | case elfcpp::R_PPC_TOC16: | |
42cacb20 | 3773 | default: |
dd93cd0a | 3774 | unsupp: |
42cacb20 DE |
3775 | gold_error_at_location(relinfo, relnum, rela.get_r_offset(), |
3776 | _("unsupported reloc %u"), | |
3777 | r_type); | |
3778 | break; | |
3779 | } | |
3780 | ||
3781 | return true; | |
3782 | } | |
3783 | ||
42cacb20 DE |
3784 | // Relocate section data. |
3785 | ||
3786 | template<int size, bool big_endian> | |
3787 | void | |
3788 | Target_powerpc<size, big_endian>::relocate_section( | |
d83ce4e3 AM |
3789 | const Relocate_info<size, big_endian>* relinfo, |
3790 | unsigned int sh_type, | |
3791 | const unsigned char* prelocs, | |
3792 | size_t reloc_count, | |
3793 | Output_section* output_section, | |
3794 | bool needs_special_offset_handling, | |
3795 | unsigned char* view, | |
c9269dff | 3796 | Address address, |
d83ce4e3 AM |
3797 | section_size_type view_size, |
3798 | const Reloc_symbol_changes* reloc_symbol_changes) | |
42cacb20 DE |
3799 | { |
3800 | typedef Target_powerpc<size, big_endian> Powerpc; | |
3801 | typedef typename Target_powerpc<size, big_endian>::Relocate Powerpc_relocate; | |
3802 | ||
3803 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3804 | ||
3805 | gold::relocate_section<size, big_endian, Powerpc, elfcpp::SHT_RELA, | |
d83ce4e3 | 3806 | Powerpc_relocate>( |
42cacb20 DE |
3807 | relinfo, |
3808 | this, | |
3809 | prelocs, | |
3810 | reloc_count, | |
3811 | output_section, | |
3812 | needs_special_offset_handling, | |
3813 | view, | |
3814 | address, | |
364c7fa5 ILT |
3815 | view_size, |
3816 | reloc_symbol_changes); | |
42cacb20 DE |
3817 | } |
3818 | ||
cf43a2fe | 3819 | class Powerpc_scan_relocatable_reloc |
42cacb20 | 3820 | { |
cf43a2fe AM |
3821 | public: |
3822 | // Return the strategy to use for a local symbol which is not a | |
3823 | // section symbol, given the relocation type. | |
3824 | inline Relocatable_relocs::Reloc_strategy | |
3825 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) | |
3826 | { | |
3827 | if (r_type == 0 && r_sym == 0) | |
3828 | return Relocatable_relocs::RELOC_DISCARD; | |
3829 | return Relocatable_relocs::RELOC_COPY; | |
3830 | } | |
3831 | ||
3832 | // Return the strategy to use for a local symbol which is a section | |
3833 | // symbol, given the relocation type. | |
3834 | inline Relocatable_relocs::Reloc_strategy | |
3835 | local_section_strategy(unsigned int, Relobj*) | |
3836 | { | |
3837 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
3838 | } | |
3839 | ||
3840 | // Return the strategy to use for a global symbol, given the | |
3841 | // relocation type, the object, and the symbol index. | |
3842 | inline Relocatable_relocs::Reloc_strategy | |
3843 | global_strategy(unsigned int r_type, Relobj*, unsigned int) | |
3844 | { | |
3845 | if (r_type == elfcpp::R_PPC_PLTREL24) | |
3846 | return Relocatable_relocs::RELOC_SPECIAL; | |
3847 | return Relocatable_relocs::RELOC_COPY; | |
3848 | } | |
3849 | }; | |
42cacb20 DE |
3850 | |
3851 | // Scan the relocs during a relocatable link. | |
3852 | ||
3853 | template<int size, bool big_endian> | |
3854 | void | |
3855 | Target_powerpc<size, big_endian>::scan_relocatable_relocs( | |
d83ce4e3 AM |
3856 | Symbol_table* symtab, |
3857 | Layout* layout, | |
3858 | Sized_relobj_file<size, big_endian>* object, | |
3859 | unsigned int data_shndx, | |
3860 | unsigned int sh_type, | |
3861 | const unsigned char* prelocs, | |
3862 | size_t reloc_count, | |
3863 | Output_section* output_section, | |
3864 | bool needs_special_offset_handling, | |
3865 | size_t local_symbol_count, | |
3866 | const unsigned char* plocal_symbols, | |
3867 | Relocatable_relocs* rr) | |
42cacb20 DE |
3868 | { |
3869 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3870 | ||
42cacb20 | 3871 | gold::scan_relocatable_relocs<size, big_endian, elfcpp::SHT_RELA, |
d83ce4e3 | 3872 | Powerpc_scan_relocatable_reloc>( |
42cacb20 DE |
3873 | symtab, |
3874 | layout, | |
3875 | object, | |
3876 | data_shndx, | |
3877 | prelocs, | |
3878 | reloc_count, | |
3879 | output_section, | |
3880 | needs_special_offset_handling, | |
3881 | local_symbol_count, | |
3882 | plocal_symbols, | |
3883 | rr); | |
3884 | } | |
3885 | ||
3886 | // Relocate a section during a relocatable link. | |
dd93cd0a AM |
3887 | // This is a modified version of the function by the same name in |
3888 | // target-reloc.h. Using relocate_special_relocatable for | |
3889 | // R_PPC_PLTREL24 would require duplication of the entire body of the | |
3890 | // loop, so we may as well duplicate the whole thing. | |
42cacb20 DE |
3891 | |
3892 | template<int size, bool big_endian> | |
3893 | void | |
3894 | Target_powerpc<size, big_endian>::relocate_for_relocatable( | |
3895 | const Relocate_info<size, big_endian>* relinfo, | |
3896 | unsigned int sh_type, | |
3897 | const unsigned char* prelocs, | |
3898 | size_t reloc_count, | |
3899 | Output_section* output_section, | |
3900 | off_t offset_in_output_section, | |
3901 | const Relocatable_relocs* rr, | |
cf43a2fe | 3902 | unsigned char*, |
dd93cd0a | 3903 | Address view_address, |
cf43a2fe | 3904 | section_size_type, |
42cacb20 DE |
3905 | unsigned char* reloc_view, |
3906 | section_size_type reloc_view_size) | |
3907 | { | |
3908 | gold_assert(sh_type == elfcpp::SHT_RELA); | |
3909 | ||
cf43a2fe AM |
3910 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc |
3911 | Reltype; | |
3912 | typedef typename Reloc_types<elfcpp::SHT_RELA, size, big_endian>::Reloc_write | |
3913 | Reltype_write; | |
3914 | const int reloc_size | |
3915 | = Reloc_types<elfcpp::SHT_RELA, size, big_endian>::reloc_size; | |
cf43a2fe AM |
3916 | |
3917 | Powerpc_relobj<size, big_endian>* const object | |
3918 | = static_cast<Powerpc_relobj<size, big_endian>*>(relinfo->object); | |
3919 | const unsigned int local_count = object->local_symbol_count(); | |
3920 | unsigned int got2_shndx = object->got2_shndx(); | |
c9269dff | 3921 | Address got2_addend = 0; |
cf43a2fe | 3922 | if (got2_shndx != 0) |
c9269dff AM |
3923 | { |
3924 | got2_addend = object->get_output_section_offset(got2_shndx); | |
3925 | gold_assert(got2_addend != invalid_address); | |
3926 | } | |
cf43a2fe AM |
3927 | |
3928 | unsigned char* pwrite = reloc_view; | |
3929 | ||
3930 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
3931 | { | |
3932 | Relocatable_relocs::Reloc_strategy strategy = rr->strategy(i); | |
3933 | if (strategy == Relocatable_relocs::RELOC_DISCARD) | |
3934 | continue; | |
3935 | ||
3936 | Reltype reloc(prelocs); | |
3937 | Reltype_write reloc_write(pwrite); | |
3938 | ||
3939 | typename elfcpp::Elf_types<size>::Elf_WXword r_info = reloc.get_r_info(); | |
3940 | const unsigned int r_sym = elfcpp::elf_r_sym<size>(r_info); | |
3941 | const unsigned int r_type = elfcpp::elf_r_type<size>(r_info); | |
3942 | ||
3943 | // Get the new symbol index. | |
3944 | ||
3945 | unsigned int new_symndx; | |
3946 | if (r_sym < local_count) | |
3947 | { | |
3948 | switch (strategy) | |
3949 | { | |
3950 | case Relocatable_relocs::RELOC_COPY: | |
3951 | case Relocatable_relocs::RELOC_SPECIAL: | |
dd93cd0a AM |
3952 | if (r_sym == 0) |
3953 | new_symndx = 0; | |
3954 | else | |
3955 | { | |
3956 | new_symndx = object->symtab_index(r_sym); | |
3957 | gold_assert(new_symndx != -1U); | |
3958 | } | |
cf43a2fe AM |
3959 | break; |
3960 | ||
3961 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
3962 | { | |
3963 | // We are adjusting a section symbol. We need to find | |
3964 | // the symbol table index of the section symbol for | |
3965 | // the output section corresponding to input section | |
3966 | // in which this symbol is defined. | |
3967 | gold_assert(r_sym < local_count); | |
3968 | bool is_ordinary; | |
3969 | unsigned int shndx = | |
3970 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
3971 | gold_assert(is_ordinary); | |
3972 | Output_section* os = object->output_section(shndx); | |
3973 | gold_assert(os != NULL); | |
3974 | gold_assert(os->needs_symtab_index()); | |
3975 | new_symndx = os->symtab_index(); | |
3976 | } | |
3977 | break; | |
3978 | ||
3979 | default: | |
3980 | gold_unreachable(); | |
3981 | } | |
3982 | } | |
3983 | else | |
3984 | { | |
3985 | const Symbol* gsym = object->global_symbol(r_sym); | |
3986 | gold_assert(gsym != NULL); | |
3987 | if (gsym->is_forwarder()) | |
3988 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
3989 | ||
3990 | gold_assert(gsym->has_symtab_index()); | |
3991 | new_symndx = gsym->symtab_index(); | |
3992 | } | |
3993 | ||
3994 | // Get the new offset--the location in the output section where | |
3995 | // this relocation should be applied. | |
3996 | ||
3997 | Address offset = reloc.get_r_offset(); | |
3998 | Address new_offset; | |
3999 | if (static_cast<Address>(offset_in_output_section) != invalid_address) | |
4000 | new_offset = offset + offset_in_output_section; | |
4001 | else | |
4002 | { | |
c9269dff AM |
4003 | section_offset_type sot_offset = |
4004 | convert_types<section_offset_type, Address>(offset); | |
cf43a2fe | 4005 | section_offset_type new_sot_offset = |
c9269dff AM |
4006 | output_section->output_offset(object, relinfo->data_shndx, |
4007 | sot_offset); | |
cf43a2fe | 4008 | gold_assert(new_sot_offset != -1); |
c9269dff | 4009 | new_offset = new_sot_offset; |
cf43a2fe AM |
4010 | } |
4011 | ||
dd93cd0a AM |
4012 | // In an object file, r_offset is an offset within the section. |
4013 | // In an executable or dynamic object, generated by | |
4014 | // --emit-relocs, r_offset is an absolute address. | |
4015 | // FIXME: Arrange to call this function for --emit-relocs too, | |
4016 | // so that we can make emitted relocs match edited TLS code. | |
4017 | if (0 && !parameters->options().relocatable()) | |
4018 | { | |
4019 | new_offset += view_address; | |
4020 | if (static_cast<Address>(offset_in_output_section) != invalid_address) | |
4021 | new_offset -= offset_in_output_section; | |
4022 | } | |
4023 | ||
cf43a2fe AM |
4024 | reloc_write.put_r_offset(new_offset); |
4025 | reloc_write.put_r_info(elfcpp::elf_r_info<size>(new_symndx, r_type)); | |
4026 | ||
4027 | // Handle the reloc addend based on the strategy. | |
4028 | typename elfcpp::Elf_types<size>::Elf_Swxword addend; | |
4029 | addend = Reloc_types<elfcpp::SHT_RELA, size, big_endian>:: | |
4030 | get_reloc_addend(&reloc); | |
4031 | ||
4032 | if (strategy == Relocatable_relocs::RELOC_COPY) | |
4033 | ; | |
4034 | else if (strategy == Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA) | |
4035 | { | |
4036 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
cf43a2fe AM |
4037 | addend = psymval->value(object, addend); |
4038 | } | |
4039 | else if (strategy == Relocatable_relocs::RELOC_SPECIAL) | |
4040 | { | |
4041 | if (addend >= 32768) | |
4042 | addend += got2_addend; | |
4043 | } | |
4044 | else | |
4045 | gold_unreachable(); | |
4046 | ||
4047 | Reloc_types<elfcpp::SHT_RELA, size, big_endian>:: | |
4048 | set_reloc_addend(&reloc_write, addend); | |
4049 | ||
4050 | pwrite += reloc_size; | |
4051 | } | |
4052 | ||
4053 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
4054 | == reloc_view_size); | |
42cacb20 DE |
4055 | } |
4056 | ||
4057 | // Return the value to use for a dynamic which requires special | |
4058 | // treatment. This is how we support equality comparisons of function | |
4059 | // pointers across shared library boundaries, as described in the | |
4060 | // processor specific ABI supplement. | |
4061 | ||
4062 | template<int size, bool big_endian> | |
4063 | uint64_t | |
4064 | Target_powerpc<size, big_endian>::do_dynsym_value(const Symbol* gsym) const | |
4065 | { | |
cf43a2fe AM |
4066 | if (size == 32) |
4067 | { | |
4068 | gold_assert(gsym->is_from_dynobj() && gsym->has_plt_offset()); | |
4069 | return this->plt_section()->address() + gsym->plt_offset(); | |
4070 | } | |
4071 | else | |
4072 | gold_unreachable(); | |
42cacb20 DE |
4073 | } |
4074 | ||
4075 | // The selector for powerpc object files. | |
4076 | ||
4077 | template<int size, bool big_endian> | |
4078 | class Target_selector_powerpc : public Target_selector | |
4079 | { | |
4080 | public: | |
4081 | Target_selector_powerpc() | |
4082 | : Target_selector(elfcpp::EM_NONE, size, big_endian, | |
03ef7571 ILT |
4083 | (size == 64 |
4084 | ? (big_endian ? "elf64-powerpc" : "elf64-powerpcle") | |
4085 | : (big_endian ? "elf32-powerpc" : "elf32-powerpcle")), | |
4086 | (size == 64 | |
4087 | ? (big_endian ? "elf64ppc" : "elf64lppc") | |
4088 | : (big_endian ? "elf32ppc" : "elf32lppc"))) | |
42cacb20 DE |
4089 | { } |
4090 | ||
2e702c99 RM |
4091 | virtual Target* |
4092 | do_recognize(Input_file*, off_t, int machine, int, int) | |
42cacb20 DE |
4093 | { |
4094 | switch (size) | |
4095 | { | |
4096 | case 64: | |
2ea97941 | 4097 | if (machine != elfcpp::EM_PPC64) |
42cacb20 DE |
4098 | return NULL; |
4099 | break; | |
4100 | ||
4101 | case 32: | |
2ea97941 | 4102 | if (machine != elfcpp::EM_PPC) |
42cacb20 DE |
4103 | return NULL; |
4104 | break; | |
4105 | ||
4106 | default: | |
4107 | return NULL; | |
4108 | } | |
4109 | ||
7f055c20 | 4110 | return this->instantiate_target(); |
42cacb20 DE |
4111 | } |
4112 | ||
2e702c99 RM |
4113 | virtual Target* |
4114 | do_instantiate_target() | |
7f055c20 | 4115 | { return new Target_powerpc<size, big_endian>(); } |
42cacb20 DE |
4116 | }; |
4117 | ||
4118 | Target_selector_powerpc<32, true> target_selector_ppc32; | |
4119 | Target_selector_powerpc<32, false> target_selector_ppc32le; | |
4120 | Target_selector_powerpc<64, true> target_selector_ppc64; | |
4121 | Target_selector_powerpc<64, false> target_selector_ppc64le; | |
4122 | ||
4123 | } // End anonymous namespace. |